rename readme

Co-authored-by: terraputix <terraputix@mailbox.org>
Reviewed-on: useweb/ombrella#7

README.md

@@ -1,4 +1,4 @@
-# Open-Meteo Weather Web
+# OMbrella
 
 An open-source, high-performance weather forecast website built with SvelteKit and powered by the [Open-Meteo APIs](https://open-meteo.com/).
 
@@ -11,7 +11,7 @@ Our objective is to provide a comprehensive, user-friendly weather platform for
 - **Framework**: [SvelteKit](https://kit.svelte.dev/)
 - **Language**: [TypeScript](https://www.typescriptlang.org/)
 - **Data Source**: [Open-Meteo API](https://open-meteo.com/)
-- **Visualization**: [Highcharts](https://www.highcharts.com/) (Current, transitioning to a more flexible charting library in the future)
+- **Visualization**: [Apache Echarts](https://echarts.apache.org)
 
 ## Developing
 

cspell.json

@@ -1,3 +0,0 @@
-{
-	"userWords": ["ConfigInterface"]
-}

package.json

@@ -14,7 +14,7 @@
 		"lint": "prettier --check . && eslint .",
 		"test:unit": "vitest",
 		"test": "npm run test:unit -- --run",
-		"upgrade:ui": "npx shadcn-svelte@latest add alert button card checkbox dialog input label select separator switch -y -o && prettier --write src/lib/components/ui"
+		"upgrade:ui": "npx shadcn-svelte@latest add alert button card checkbox dialog input label popover select separator switch -y -o && prettier --write src/lib/components/ui"
 	},
 	"devDependencies": {
 		"@eslint/compat": "^1.4.0",
@@ -49,11 +49,10 @@
 		"typescript-eslint": "^8.48.1",
 		"vite": "^7.2.6",
 		"vitest": "^4.0.15",
-		"vitest-browser-svelte": "^2.0.1"
+		"vitest-browser-svelte": "^2.0.1",
-	},
+		"date-fns": "^4.1.0",
-	"dependencies": {
+		"date-fns-tz": "^3.2.0",
-		"@openmeteo/sdk": "^1.23.0",
+		"echarts": "^6.0.0",
-		"highcharts": "^12.4.0",
 		"mode-watcher": "^1.1.0",
 		"openmeteo": "^1.2.3"
 	}

src/lib/components/charts/ChartContainer.svelte

@@ -0,0 +1,118 @@
+<!--
+  ChartContainer.svelte — Consistent chart layout wrapper
+
+  Provides a container with:
+  - Consistent padding and spacing
+  - Loading overlay with spinner
+  - Fade transitions
+  - Responsive min-height calculation
+  - Slot for chart content
+
+  Usage:
+    <ChartContainer loading={!chartsReady} chartCount={3}>
+      {#each charts as chart}
+        <EChart option={chart.option} />
+      {/each}
+    </ChartContainer>
+-->
+<script lang="ts">
+	import { fade } from 'svelte/transition';
+	import type { Snippet } from 'svelte';
+
+	// ─── Props ──────────────────────────────────────────────────────────────────
+
+	interface Props {
+		/** Whether the charts are still loading */
+		loading?: boolean;
+		/** Number of charts being rendered (used for min-height calculation) */
+		chartCount?: number;
+		/** Height per individual chart in pixels (default: 300) */
+		chartHeight?: number;
+		/** Extra vertical padding in pixels added to the total min-height (default: 2) */
+		extraPadding?: number;
+		/** Optional CSS class for the outer wrapper */
+		class?: string;
+		/** Slot content (charts go here) */
+		children?: Snippet;
+	}
+
+	let {
+		loading = true,
+		chartCount = 1,
+		chartHeight = 300,
+		extraPadding = 2,
+		class: className = '',
+		children
+	}: Props = $props();
+
+	// ─── Computed ───────────────────────────────────────────────────────────────
+
+	let minHeight = $derived(chartHeight * chartCount + extraPadding);
+</script>
+
+<div
+	class="chart-container relative {className}"
+	style:min-height="{minHeight}px"
+>
+	<!-- Chart content area -->
+	<div
+		class="chart-content"
+		in:fade={{ duration: 300 }}
+		out:fade={{ duration: 300 }}
+	>
+		{#if children}
+			{@render children()}
+		{/if}
+	</div>
+
+	<!-- Loading overlay -->
+	<div
+		class="loading-overlay absolute inset-0 z-30 flex items-center justify-center rounded-lg bg-accent transition-opacity duration-300"
+		class:pointer-events-none={!loading}
+		class:opacity-0={!loading}
+		class:opacity-100={loading}
+	>
+		<div class="flex flex-col items-center gap-3">
+			<svg
+				class="lucide lucide-loader-circle animate-spin text-muted-foreground"
+				xmlns="http://www.w3.org/2000/svg"
+				width="40"
+				height="40"
+				viewBox="0 0 24 24"
+				fill="none"
+				stroke="currentColor"
+				stroke-width="2"
+				stroke-linecap="round"
+				stroke-linejoin="round"
+				aria-hidden="true"
+			>
+				<path d="M21 12a9 9 0 1 1-6.219-8.56" />
+			</svg>
+			<span class="sr-only">Loading charts...</span>
+		</div>
+	</div>
+</div>
+
+<style>
+	.chart-container {
+		/* Negative horizontal margin on mobile to use full width, reset on md+ */
+		margin-left: -1.5rem;
+		margin-right: -1.5rem;
+	}
+
+	@media (min-width: 768px) {
+		.chart-container {
+			margin-left: 0;
+			margin-right: 0;
+		}
+	}
+
+	.chart-content {
+		width: 100%;
+	}
+
+	/* Smooth transition for the loading overlay */
+	.loading-overlay {
+		will-change: opacity;
+	}
+</style>

src/lib/components/charts/ChartToolbar.svelte

@@ -0,0 +1,214 @@
+<!--
+  ChartToolbar.svelte — Chart action bar with download and display controls
+
+  Provides a toolbar row with:
+  - Download full meteogram as PNG button
+  - Download full meteogram as SVG button
+  - Slot for additional custom controls (e.g. legend toggle)
+
+  When multiple charts are provided, they are stitched into a single
+  combined image on download.
+
+  Usage:
+    <ChartToolbar
+      charts={chartInstances}
+      fileName="model-comparison"
+    >
+      {#snippet controls()}
+        <Switch bind:checked={showLegend} />
+      {/snippet}
+    </ChartToolbar>
+-->
+<script lang="ts">
+	import { downloadMeteogram } from '$lib/utils/echarts/download';
+
+	import type { ExportFormat } from '$lib/utils/echarts/download';
+	import type * as echarts from 'echarts';
+	import type { Snippet } from 'svelte';
+
+	// ─── Props ──────────────────────────────────────────────────────────────────
+
+	interface Props {
+		/** Array of ECharts instances available for download */
+		charts?: echarts.ECharts[];
+		/** Base file name for downloaded images (without extension) */
+		fileName?: string;
+		/** Pixel ratio for PNG exports (default: 2) */
+		pixelRatio?: number;
+		/** Optional CSS class for the outer container */
+		class?: string;
+		/** Slot for additional controls (switches, checkboxes, etc.) */
+		controls?: Snippet;
+	}
+
+	let {
+		charts = [],
+		fileName = 'open-meteo-chart',
+		pixelRatio = 2,
+		class: className = '',
+		controls
+	}: Props = $props();
+
+	// ─── State ──────────────────────────────────────────────────────────────────
+
+	let downloadingFormat: ExportFormat | null = $state(null);
+
+	// ─── Computed ───────────────────────────────────────────────────────────────
+
+	let hasCharts = $derived(charts.length > 0);
+
+	// ─── Handlers ───────────────────────────────────────────────────────────────
+
+	async function handleDownload(format: ExportFormat): Promise<void> {
+		if (!hasCharts || downloadingFormat) return;
+
+		downloadingFormat = format;
+
+		try {
+			await new Promise((resolve) => setTimeout(resolve, 50));
+			downloadMeteogram(charts, { fileName, format, pixelRatio });
+		} finally {
+			setTimeout(() => {
+				downloadingFormat = null;
+			}, 500);
+		}
+	}
+</script>
+
+<div
+	class="chart-toolbar flex flex-col items-center gap-4 md:flex-row md:justify-between {className}"
+>
+	<!-- Left side: Custom controls slot -->
+	<div class="flex flex-wrap items-center gap-4 md:gap-6">
+		{#if controls}
+			{@render controls()}
+		{/if}
+	</div>
+
+	<!-- Right side: Download buttons -->
+	<div class="flex flex-wrap items-center gap-2">
+		<!-- Download as PNG -->
+		<button
+			type="button"
+			class="toolbar-btn"
+			disabled={!hasCharts || downloadingFormat !== null}
+			onclick={() => handleDownload('png')}
+			title="Download meteogram as PNG image"
+		>
+			{#if downloadingFormat === 'png'}
+				<svg
+					class="h-4 w-4 animate-spin"
+					xmlns="http://www.w3.org/2000/svg"
+					viewBox="0 0 24 24"
+					fill="none"
+					stroke="currentColor"
+					stroke-width="2"
+					aria-hidden="true"
+				>
+					<path d="M21 12a9 9 0 1 1-6.219-8.56" />
+				</svg>
+			{:else}
+				<svg
+					class="h-4 w-4"
+					xmlns="http://www.w3.org/2000/svg"
+					viewBox="0 0 24 24"
+					fill="none"
+					stroke="currentColor"
+					stroke-width="2"
+					stroke-linecap="round"
+					stroke-linejoin="round"
+					aria-hidden="true"
+				>
+					<path d="M21 15v4a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2v-4" />
+					<polyline points="7 10 12 15 17 10" />
+					<line x1="12" y1="15" x2="12" y2="3" />
+				</svg>
+			{/if}
+			<span>PNG</span>
+		</button>
+
+		<!-- Download as SVG -->
+		<button
+			type="button"
+			class="toolbar-btn"
+			disabled={!hasCharts || downloadingFormat !== null}
+			onclick={() => handleDownload('svg')}
+			title="Download meteogram as SVG vector image"
+		>
+			{#if downloadingFormat === 'svg'}
+				<svg
+					class="h-4 w-4 animate-spin"
+					xmlns="http://www.w3.org/2000/svg"
+					viewBox="0 0 24 24"
+					fill="none"
+					stroke="currentColor"
+					stroke-width="2"
+					aria-hidden="true"
+				>
+					<path d="M21 12a9 9 0 1 1-6.219-8.56" />
+				</svg>
+			{:else}
+				<svg
+					class="h-4 w-4"
+					xmlns="http://www.w3.org/2000/svg"
+					viewBox="0 0 24 24"
+					fill="none"
+					stroke="currentColor"
+					stroke-width="2"
+					stroke-linecap="round"
+					stroke-linejoin="round"
+					aria-hidden="true"
+				>
+					<path d="M21 15v4a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2v-4" />
+					<polyline points="7 10 12 15 17 10" />
+					<line x1="12" y1="15" x2="12" y2="3" />
+				</svg>
+			{/if}
+			<span>SVG</span>
+		</button>
+	</div>
+</div>
+
+<style>
+	.toolbar-btn {
+		display: inline-flex;
+		align-items: center;
+		gap: 0.375rem;
+		padding: 0.375rem 0.75rem;
+		font-size: 0.8125rem;
+		font-weight: 500;
+		line-height: 1.25rem;
+		color: hsl(var(--muted-foreground));
+		background: hsl(var(--muted) / 0.5);
+		border: 1px solid hsl(var(--border));
+		border-radius: var(--radius, 0.375rem);
+		cursor: pointer;
+		transition:
+			color 150ms ease,
+			background-color 150ms ease,
+			border-color 150ms ease;
+		white-space: nowrap;
+		user-select: none;
+	}
+
+	.toolbar-btn:hover:not(:disabled) {
+		color: hsl(var(--foreground));
+		background: hsl(var(--muted));
+		border-color: hsl(var(--foreground) / 0.2);
+	}
+
+	.toolbar-btn:active:not(:disabled) {
+		background: hsl(var(--muted) / 0.8);
+		transform: translateY(0.5px);
+	}
+
+	.toolbar-btn:disabled {
+		opacity: 0.5;
+		cursor: not-allowed;
+	}
+
+	.toolbar-btn:focus-visible {
+		outline: 2px solid hsl(var(--ring));
+		outline-offset: 2px;
+	}
+</style>

src/lib/components/charts/EChart.svelte

@@ -0,0 +1,165 @@
+<!--
+  EChart.svelte — Reusable ECharts wrapper component
+
+  Handles chart lifecycle (init, update, dispose), responsive resize via
+  ResizeObserver, and exposes the ECharts instance for programmatic access
+  (e.g. export/download).
+
+  Usage:
+    <EChart
+      option={chartOption}
+      height="300px"
+      renderer="canvas"
+      onChartReady={(chart) => { ... }}
+    />
+-->
+<script lang="ts">
+	import { onDestroy, onMount } from 'svelte';
+
+	import * as echarts from 'echarts';
+
+	// ─── Props ──────────────────────────────────────────────────────────────────
+
+	interface Props {
+		/** The ECharts option object to render */
+		option: Record<string, unknown>;
+		/** CSS height of the chart container (default: '300px') */
+		height?: string;
+		/** CSS width of the chart container (default: '100%') */
+		width?: string;
+		/** Renderer type: 'canvas' or 'svg' (default: 'canvas') */
+		renderer?: 'canvas' | 'svg';
+		/** Whether to merge options on update (true) or replace them (false) */
+		notMerge?: boolean;
+		/** Whether to delay update until next animation frame */
+		lazyUpdate?: boolean;
+		/** Optional CSS class for the outer container */
+		class?: string;
+		/** Callback fired once the chart instance is initialized */
+		onChartReady?: (chart: echarts.ECharts) => void;
+		/** Callback fired when the chart is disposed */
+		onChartDisposed?: () => void;
+	}
+
+	let {
+		option,
+		height = '300px',
+		width = '100%',
+		renderer = 'canvas',
+		notMerge = false,
+		lazyUpdate = false,
+		class: className = '',
+		onChartReady,
+		onChartDisposed
+	}: Props = $props();
+
+	// ─── Internal State ─────────────────────────────────────────────────────────
+
+	let containerEl: HTMLDivElement;
+	let chartInstance: echarts.ECharts | null = null;
+	let resizeObserver: ResizeObserver | null = null;
+
+	// ─── Public API ─────────────────────────────────────────────────────────────
+
+	/**
+	 * Returns the underlying ECharts instance, or null if not yet initialized.
+	 */
+	export function getChart(): echarts.ECharts | null {
+		return chartInstance;
+	}
+
+	/**
+	 * Returns true if the chart has been initialized and is not disposed.
+	 */
+	export function isReady(): boolean {
+		return chartInstance !== null && !chartInstance.isDisposed();
+	}
+
+	/**
+	 * Triggers a manual resize of the chart.
+	 * Useful after layout changes that the ResizeObserver might miss.
+	 */
+	export function resize(): void {
+		if (chartInstance && !chartInstance.isDisposed()) {
+			chartInstance.resize();
+		}
+	}
+
+	/**
+	 * Disposes the chart instance and cleans up observers.
+	 * Called automatically on component destroy, but can be invoked manually.
+	 */
+	export function dispose(): void {
+		cleanup();
+	}
+
+	// ─── Lifecycle ──────────────────────────────────────────────────────────────
+
+	onMount(() => {
+		initChart();
+	});
+
+	onDestroy(() => {
+		cleanup();
+	});
+
+	// ─── Reactivity: Update option when it changes ──────────────────────────────
+
+	$effect(() => {
+		if (chartInstance && !chartInstance.isDisposed() && option) {
+			chartInstance.setOption(option, notMerge, lazyUpdate);
+		}
+	});
+
+	// ─── Init & Cleanup ─────────────────────────────────────────────────────────
+
+	function initChart(): void {
+		if (!containerEl) return;
+
+		// Dispose any existing instance (e.g. from HMR)
+		if (chartInstance && !chartInstance.isDisposed()) {
+			chartInstance.dispose();
+		}
+
+		chartInstance = echarts.init(containerEl, null, { renderer });
+
+		if (option) {
+			chartInstance.setOption(option, notMerge, lazyUpdate);
+		}
+
+		// Set up responsive resize
+		resizeObserver = new ResizeObserver(() => {
+			if (chartInstance && !chartInstance.isDisposed()) {
+				chartInstance.resize();
+			}
+		});
+		resizeObserver.observe(containerEl);
+
+		onChartReady?.(chartInstance);
+	}
+
+	function cleanup(): void {
+		if (resizeObserver) {
+			resizeObserver.disconnect();
+			resizeObserver = null;
+		}
+
+		if (chartInstance) {
+			if (!chartInstance.isDisposed()) {
+				chartInstance.dispose();
+			}
+			chartInstance = null;
+		}
+
+		onChartDisposed?.();
+	}
+</script>
+
+<div bind:this={containerEl} class="echart-wrapper {className}" style:width style:height></div>
+
+<style>
+	.echart-wrapper {
+		position: relative;
+		overflow: hidden;
+	}
+</style>

src/lib/components/charts/echarts.css

@@ -0,0 +1,164 @@
+/* ═══════════════════════════════════════════════════════════════════════════════
+   ECharts Global Styles — Open-Meteo Weather
+
+   Shared CSS for all ECharts chart instances across the application.
+   Provides consistent theming, tooltip styling, and responsive behavior
+   that integrates with the application's design system (Tailwind + shadcn).
+   ═══════════════════════════════════════════════════════════════════════════════ */
+
+/* ─── Chart Wrapper ────────────────────────────────────────────────────────── */
+
+.echart-wrapper {
+	width: 100%;
+	position: relative;
+	overflow: hidden;
+}
+
+/* ─── Chart Container (legacy class support) ───────────────────────────────── */
+
+.echarts-container {
+	width: 100%;
+	height: 100%;
+	min-height: 300px;
+}
+
+/* Ensure canvas background is always transparent so our page bg shows through */
+.echart-wrapper canvas,
+.echarts-container canvas {
+	background: transparent !important;
+}
+
+/* ─── Tooltip Styling ──────────────────────────────────────────────────────── */
+
+/* Override ECharts' default tooltip to match the application's popover design */
+.echarts-tooltip {
+	background: hsl(var(--popover)) !important;
+	border: 1px solid hsl(var(--border)) !important;
+	border-radius: var(--radius, 0.5rem) !important;
+	box-shadow:
+		0 4px 6px -1px rgb(0 0 0 / 0.1),
+		0 2px 4px -2px rgb(0 0 0 / 0.05) !important;
+	padding: 0.625rem 0.75rem !important;
+	font-size: 0.8125rem !important;
+	line-height: 1.4 !important;
+	max-width: min(90vw, 480px) !important;
+	pointer-events: none;
+}
+
+.echarts-tooltip-content {
+	color: hsl(var(--popover-foreground)) !important;
+}
+
+/* Tooltip marker dots — make them slightly larger and rounded */
+.echarts-tooltip .echarts-tooltip-marker,
+.echarts-tooltip span[style*="border-radius"] {
+	display: inline-block;
+	vertical-align: middle;
+	margin-right: 0.25rem;
+}
+
+/* ─── Loading Mask ─────────────────────────────────────────────────────────── */
+
+.echarts-loading-mask {
+	background: hsl(var(--background) / 0.8) !important;
+}
+
+/* ─── Light Mode Adjustments ───────────────────────────────────────────────── */
+
+[data-theme='light'] .echart-wrapper,
+[data-theme='light'] .echarts-container,
+:root:not(.dark):not([data-theme='dark']) .echart-wrapper,
+:root:not(.dark):not([data-theme='dark']) .echarts-container {
+	color: hsl(var(--foreground));
+}
+
+[data-theme='light'] .echarts-tooltip,
+:root:not(.dark):not([data-theme='dark']) .echarts-tooltip {
+	color: hsl(var(--popover-foreground)) !important;
+}
+
+/* ─── Dark Mode Adjustments ────────────────────────────────────────────────── */
+
+.dark .echart-wrapper,
+[data-theme='dark'] .echart-wrapper,
+.dark .echarts-container,
+[data-theme='dark'] .echarts-container {
+	color: hsl(var(--foreground));
+}
+
+.dark .echarts-tooltip,
+[data-theme='dark'] .echarts-tooltip {
+	color: hsl(var(--popover-foreground)) !important;
+	box-shadow:
+		0 4px 6px -1px rgb(0 0 0 / 0.3),
+		0 2px 4px -2px rgb(0 0 0 / 0.15) !important;
+}
+
+/* ─── Toolbox Icon Overrides ───────────────────────────────────────────────── */
+
+/* Make sure the toolbox icons are visually subtle until hovered */
+.echart-wrapper [class*="toolbox"],
+.echarts-container [class*="toolbox"] {
+	opacity: 0.6;
+	transition: opacity 150ms ease;
+}
+
+.echart-wrapper:hover [class*="toolbox"],
+.echarts-container:hover [class*="toolbox"] {
+	opacity: 1;
+}
+
+/* ─── Chart Spacing ────────────────────────────────────────────────────────── */
+
+/* Add consistent vertical spacing between stacked chart instances */
+.chart-content .echart-wrapper + .echart-wrapper {
+	margin-top: 0.5rem;
+}
+
+/* ─── Responsive Sizing ────────────────────────────────────────────────────── */
+
+@media (max-width: 640px) {
+	.echarts-container {
+		min-height: 240px;
+	}
+
+	/* Slightly smaller tooltips on mobile */
+	.echarts-tooltip {
+		font-size: 0.75rem !important;
+		padding: 0.5rem 0.625rem !important;
+	}
+}
+
+@media (min-width: 641px) and (max-width: 1024px) {
+	.echarts-container {
+		min-height: 280px;
+	}
+}
+
+/* ─── Print Styles ─────────────────────────────────────────────────────────── */
+
+@media print {
+	.echart-wrapper,
+	.echarts-container {
+		break-inside: avoid;
+		page-break-inside: avoid;
+	}
+
+	/* Hide interactive elements when printing */
+	.echart-wrapper [class*="toolbox"],
+	.echarts-container [class*="toolbox"],
+	.chart-toolbar {
+		display: none !important;
+	}
+}
+
+/* ─── Accessibility ────────────────────────────────────────────────────────── */
+
+/* Respect reduced motion preferences */
+@media (prefers-reduced-motion: reduce) {
+	.echart-wrapper *,
+	.echarts-container * {
+		animation-duration: 0.01ms !important;
+		transition-duration: 0.01ms !important;
+	}
+}

src/lib/components/charts/index.ts

@@ -0,0 +1,12 @@
+/**
+ * Chart Components — Barrel Export
+ *
+ * Re-exports all chart-related Svelte components from a single entry point.
+ *
+ * Usage:
+ *   import { EChart, ChartContainer, ChartToolbar } from '$lib/components/charts';
+ */
+
+export { default as EChart } from './EChart.svelte';
+export { default as ChartContainer } from './ChartContainer.svelte';
+export { default as ChartToolbar } from './ChartToolbar.svelte';

src/lib/components/location/location-search.svelte

@@ -1,14 +1,14 @@
 <script lang="ts">
-	import { createEventDispatcher, onDestroy } from 'svelte';
+	import { createEventDispatcher, onDestroy, tick } from 'svelte';
 
 	import { type GeoLocation } from '$lib/stores/settings';
 
 	import * as Alert from '$lib/components/ui/alert';
 	import { Button } from '$lib/components/ui/button';
-	import * as Dialog from '$lib/components/ui/dialog';
 	import { Input } from '$lib/components/ui/input';
+	import * as Popover from '$lib/components/ui/popover';
 
-	export let label: string = 'Search Locations...';
+	export let label: string = 'Search location...';
 	export let placeholder: string = 'Enter city name...';
 
 	interface ResultSet {
@@ -18,26 +18,32 @@
 	const dispatch = createEventDispatcher();
 	let debounceTimeout: ReturnType<typeof setTimeout> | undefined;
 	let searchQuery = '';
+	let popoverOpen = false;
+	let searchInputEl: HTMLInputElement | null = null;
 
 	onDestroy(() => {
-		clearInterval(debounceTimeout);
+		clearTimeout(debounceTimeout);
 	});
 
-	let scrollY: number | undefined;
+	const closePopover = () => {
-
+		popoverOpen = false;
-	const closeModal = () => {
-		dialogOpen = false;
-		if (scrollY) {
-			window.scrollTo({ top: scrollY, behavior: 'instant' });
-		}
 	};
 
 	const selectLocation = (location: GeoLocation) => {
 		searchQuery = '';
-		closeModal();
+		closePopover();
 		dispatch('location', location);
 	};
 
+	async function focusInput() {
+		await tick();
+		searchInputEl?.focus();
+	}
+
+	$: if (popoverOpen) {
+		focusInput();
+	}
+
 	$: results = (async () => {
 		if (debounceTimeout) {
 			clearTimeout(debounceTimeout);
@@ -91,187 +97,170 @@
 
 		return (await result.json()) as ResultSet;
 	})();
-
-	let dialogOpen = false;
 </script>
 
-<Dialog.Root bind:open={dialogOpen}>
+<Popover.Root bind:open={popoverOpen}>
-	<Dialog.Trigger
+	<Popover.Trigger
-		class="group flex h-14 w-full cursor-pointer items-center justify-start rounded-xl border-2 border-gray-200 bg-white px-6 transition-all duration-200 hover:border-blue-400 hover:shadow-md focus:border-blue-500 focus:ring-2 focus:ring-blue-500/20 dark:border-gray-600 dark:bg-gray-700"
+		class="flex h-9 w-full cursor-pointer items-center gap-2 rounded-md border border-border bg-background px-3 text-[0.8125rem] text-muted-foreground transition-[border-color,box-shadow] duration-150 hover:border-primary"
-		onclick={(e) => {
-			e.preventDefault();
-			dialogOpen = !dialogOpen;
-		}}
 	>
 		<svg
-			class="mr-3 h-5 w-5 text-gray-400 transition-colors group-hover:text-blue-500"
+			class="h-3.5 w-3.5 shrink-0 opacity-50"
 			xmlns="http://www.w3.org/2000/svg"
 			fill="none"
 			viewBox="0 0 24 24"
 			stroke="currentColor"
+			stroke-width="2"
 		>
 			<circle cx="11" cy="11" r="8" />
 			<path d="m21 21-4.3-4.3" />
 		</svg>
-		<span
+		<span class="overflow-hidden text-ellipsis whitespace-nowrap">{label}</span>
-			class="text-gray-600 transition-colors group-hover:text-gray-900 dark:text-gray-300 dark:group-hover:text-white"
+	</Popover.Trigger>
-		>
-			{label}
-		</span>
-	</Dialog.Trigger>
 
-	<Dialog.Portal>
+	<Popover.Content
-		<Dialog.Overlay class="bg-black/20 backdrop-blur-sm" />
+		class="popover-dropdown w-(--bits-popover-anchor-width) min-w-[320px] p-0"
-
+		side="bottom"
-		<Dialog.Content
+		align="start"
-			class="top-[10%] flex max-h-[calc(100vh-10%)] min-h-[500px] translate-y-0 flex-col overflow-hidden rounded-2xl border-border bg-white shadow-2xl sm:max-w-[700px] dark:bg-gray-800"
+		sideOffset={4}
-		>
+		onOpenAutoFocus={(e) => {
-			<Dialog.Header class="pb-6">
+			e.preventDefault();
-				<Dialog.Title class="text-center text-2xl font-bold">Find Your Location</Dialog.Title>
+			focusInput();
-				<p class="text-center text-gray-600 dark:text-gray-300">
+		}}
-					Search for a city or use GPS to detect your location
+	>
-				</p>
+		<div class="flex flex-col">
-			</Dialog.Header>
+			<div class="p-3">
-
+				<div class="flex gap-2">
-			<div class="flex-1 overflow-hidden">
+					<div class="flex-1">
-				<div class="px-6">
+						<Input
-					<div class="mb-6 flex gap-3">
+							type="search"
-						<div class="flex-1">
+							{placeholder}
-							<Input
+							class="h-9"
-								type="search"
+							autocomplete="off"
-								{placeholder}
+							spellcheck="false"
-								class="h-12 text-lg"
+							aria-label="Search Location"
-								autocomplete="off"
+							bind:value={searchQuery}
-								spellcheck="false"
+							bind:ref={searchInputEl}
-								aria-label="Search Location"
+						/>
-								bind:value={searchQuery}
-							/>
-						</div>
-						<Button
-							variant="outline"
-							size="lg"
-							class="px-4"
-							title="Use GPS Location"
-							onclick={() => (searchQuery = 'GPS')}
-						>
-							<svg class="h-5 w-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
-								<path
-									stroke-linecap="round"
-									stroke-linejoin="round"
-									stroke-width="2"
-									d="M17.657 16.657L13.414 20.9a1.998 1.998 0 01-2.827 0l-4.244-4.243a8 8 0 1111.314 0z"
-								/>
-								<path
-									stroke-linecap="round"
-									stroke-linejoin="round"
-									stroke-width="2"
-									d="M15 11a3 3 0 11-6 0 3 3 0 016 0z"
-								/>
-							</svg>
-						</Button>
 					</div>
-				</div>
+					<Button
-
+						variant="outline"
-				<div class="flex-1 overflow-y-auto px-6 pb-6">
+						size="default"
-					{#await results}
+						class="h-9 px-2.5"
-						<div class="flex h-32 items-center justify-center">
+						title="Use GPS Location"
-							<div class="flex items-center space-x-3">
+						onclick={() => (searchQuery = 'GPS')}
-								<div class="h-6 w-6 animate-spin rounded-full border-b-2 border-blue-600"></div>
+					>
-								<span class="text-gray-600 dark:text-gray-300">Searching...</span>
+						<svg class="h-4 w-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
-							</div>
+							<path
-						</div>
+								stroke-linecap="round"
-					{:then results}
+								stroke-linejoin="round"
-						{#if results.results && results.results.length === 0}
+								stroke-width="2"
-							{#if searchQuery.length < 2}
+								d="M17.657 16.657L13.414 20.9a1.998 1.998 0 01-2.827 0l-4.244-4.243a8 8 0 1111.314 0z"
-								<Alert.Root class="border-blue-200 bg-blue-50 dark:bg-blue-900/20">
+							/>
-									<svg class="h-4 w-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+							<path
-										<path
+								stroke-linecap="round"
-											stroke-linecap="round"
+								stroke-linejoin="round"
-											stroke-linejoin="round"
+								stroke-width="2"
-											stroke-width="2"
+								d="M15 11a3 3 0 11-6 0 3 3 0 016 0z"
-											d="M13 16h-1v-4h-1m1-4h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z"
+							/>
-										/>
+						</svg>
-									</svg>
+					</Button>
-									<Alert.Description class="text-blue-700 dark:text-blue-300">
-										Start typing to search for locations or use GPS to detect your current position
-									</Alert.Description>
-								</Alert.Root>
-							{:else}
-								<Alert.Root class="border-orange-200 bg-orange-50 dark:bg-orange-900/20">
-									<svg class="h-4 w-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
-										<path
-											stroke-linecap="round"
-											stroke-linejoin="round"
-											stroke-width="2"
-											d="M12 9v2m0 4h.01m-6.938 4h13.856c1.54 0 2.502-1.667 1.732-2.5L13.732 4c-.77-.833-1.728-.833-2.498 0L3.732 16.5c-.77.833.192 2.5 1.732 2.5z"
-										/>
-									</svg>
-									<Alert.Description class="text-orange-700 dark:text-orange-300">
-										No locations found for "{searchQuery}". Try a different search term.
-									</Alert.Description>
-								</Alert.Root>
-							{/if}
-						{:else if !results.results}
-							<Alert.Root variant="destructive">
-								<Alert.Description>No locations found</Alert.Description>
-							</Alert.Root>
-						{:else}
-							<div class="space-y-2">
-								{#each results.results || [] as location, i (i)}
-									<button
-										class="group w-full rounded-xl border border-gray-200 p-4 text-left transition-all duration-200 hover:border-blue-400 hover:bg-blue-50 dark:border-gray-600 dark:hover:bg-blue-900/20"
-										onclick={() => selectLocation(location)}
-									>
-										<div class="flex items-center justify-between">
-											<div class="flex flex-1 items-center space-x-4">
-												<img
-													class="h-10 w-10 rounded-full shadow-md"
-													src="/images/country-flags/{(
-														location.country_code || 'united_nations'
-													).toLowerCase()}.svg"
-													alt={location.country}
-												/>
-												<div class="flex-1">
-													<h3
-														class="font-semibold text-gray-900 group-hover:text-blue-600 dark:text-white dark:group-hover:text-blue-400"
-													>
-														{location.name}
-													</h3>
-													<p class="text-sm text-gray-600 dark:text-gray-300">
-														{location.admin1 || ''}
-														{location.country || ''}
-													</p>
-													<p class="text-xs text-gray-500 dark:text-gray-400">
-														{location.latitude?.toFixed(2)}°N {location.longitude?.toFixed(2)}°E
-														{#if location.elevation}• {location.elevation?.toFixed(0)}m{/if}
-													</p>
-												</div>
-											</div>
-											<svg
-												class="h-5 w-5 text-gray-400 group-hover:text-blue-500"
-												fill="none"
-												stroke="currentColor"
-												viewBox="0 0 24 24"
-											>
-												<path
-													stroke-linecap="round"
-													stroke-linejoin="round"
-													stroke-width="2"
-													d="M9 5l7 7-7 7"
-												/>
-											</svg>
-										</div>
-									</button>
-								{/each}
-							</div>
-						{/if}
-					{:catch error}
-						<Alert.Root variant="destructive">
-							<Alert.Description>Error: {error.message}</Alert.Description>
-						</Alert.Root>
-					{/await}
 				</div>
 			</div>
-		</Dialog.Content>
+
-	</Dialog.Portal>
+			<div class="max-h-[min(400px,50vh)] overflow-y-auto px-3 pb-3">
-</Dialog.Root>
+				{#await results}
+					<div class="flex h-20 items-center justify-center">
+						<div class="flex items-center space-x-2">
+							<div class="h-4 w-4 animate-spin rounded-full border-b-2 border-primary"></div>
+							<span class="text-sm text-muted-foreground">Searching...</span>
+						</div>
+					</div>
+				{:then results}
+					{#if results.results && results.results.length === 0}
+						{#if searchQuery.length < 2}
+							<div
+								class="flex items-start gap-2 rounded-md bg-primary/8 p-2.5 text-muted-foreground"
+							>
+								<svg
+									class="mt-0.5 h-3.5 w-3.5 shrink-0"
+									fill="none"
+									stroke="currentColor"
+									viewBox="0 0 24 24"
+									stroke-width="2"
+								>
+									<path
+										stroke-linecap="round"
+										stroke-linejoin="round"
+										d="M13 16h-1v-4h-1m1-4h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z"
+									/>
+								</svg>
+								<span class="text-xs">
+									Start typing to search or use GPS to detect your position
+								</span>
+							</div>
+						{:else}
+							<Alert.Root
+								class="border-orange-200 bg-orange-50 dark:border-orange-800 dark:bg-orange-900/20"
+							>
+								<Alert.Description class="text-orange-700 dark:text-orange-300">
+									No locations found for "{searchQuery}". Try a different term.
+								</Alert.Description>
+							</Alert.Root>
+						{/if}
+					{:else if !results.results}
+						<Alert.Root variant="destructive">
+							<Alert.Description>No locations found</Alert.Description>
+						</Alert.Root>
+					{:else}
+						<div class="space-y-0.5">
+							{#each results.results || [] as location, i (i)}
+								<button
+									class="group block w-full cursor-pointer rounded-md border border-transparent bg-transparent px-2.5 py-2 transition-[background,border-color] duration-150 hover:border-border hover:bg-accent"
+									onclick={() => selectLocation(location)}
+								>
+									<div class="flex items-center gap-2.5">
+										<img
+											class="h-7 w-7 rounded-full"
+											src="/images/country-flags/{(
+												location.country_code || 'united_nations'
+											).toLowerCase()}.svg"
+											alt={location.country}
+										/>
+										<div class="flex-1 text-left">
+											<div class="text-sm font-medium text-foreground">
+												{location.name}
+											</div>
+											<div class="text-xs text-muted-foreground">
+												{location.admin1 || ''}
+												{location.country || ''}
+												· {location.latitude.toFixed(2)}°N {location.longitude.toFixed(2)}°E
+												{#if location.elevation}· {location.elevation.toFixed(0)}m{/if}
+											</div>
+										</div>
+										<svg
+											class="h-3.5 w-3.5 text-muted-foreground opacity-0 transition-opacity duration-150 group-hover:opacity-100"
+											fill="none"
+											stroke="currentColor"
+											viewBox="0 0 24 24"
+										>
+											<path
+												stroke-linecap="round"
+												stroke-linejoin="round"
+												stroke-width="2"
+												d="M9 5l7 7-7 7"
+											/>
+										</svg>
+									</div>
+								</button>
+							{/each}
+						</div>
+					{/if}
+				{:catch error}
+					<Alert.Root variant="destructive">
+						<Alert.Description>Error: {error.message}</Alert.Description>
+					</Alert.Root>
+				{/await}
+			</div>
+		</div>
+	</Popover.Content>
+</Popover.Root>

src/lib/components/navigation/header.svelte

@@ -0,0 +1,93 @@
+<script lang="ts">
+	import { get } from 'svelte/store';
+
+	import { goto } from '$app/navigation';
+	import { resolve } from '$app/paths';
+	import { page } from '$app/stores';
+
+	import { type GeoLocation, storedLocation } from '$lib/stores/settings';
+
+	import { buildLocationRoute } from '$lib/utils/location';
+
+	import LocationSearch from '$lib/components/location/location-search.svelte';
+
+	interface Props {
+		onMenuToggle?: () => void;
+	}
+
+	let { onMenuToggle }: Props = $props();
+
+	let location = $state(get(storedLocation));
+
+	storedLocation.subscribe((value) => {
+		location = value;
+	});
+
+	function navigateToLocation(newLocation: GeoLocation) {
+		storedLocation.set(newLocation);
+		const locationRoute = buildLocationRoute(newLocation);
+		const currentPath = get(page).url.pathname;
+
+		if (currentPath.startsWith('/weather/compare')) {
+			goto(resolve('/weather/compare/[location]', { location: locationRoute }));
+		} else if (currentPath.startsWith('/weather/14-day')) {
+			goto(resolve('/weather/14-day/[location]', { location: locationRoute }));
+		} else {
+			goto(resolve('/weather/week/[location]', { location: locationRoute }));
+		}
+	}
+</script>
+
+<header
+	class="topbar flex h-14 shrink-0 items-center gap-3 border-b border-topbar-border bg-topbar px-3 md:px-4"
+>
+	<!-- Mobile menu toggle -->
+	<button
+		class="flex h-8 w-8 items-center justify-center rounded-md transition-colors hover:bg-black/5 md:hidden dark:hover:bg-white/10"
+		onclick={onMenuToggle}
+		aria-label="Toggle menu"
+	>
+		<svg class="h-5 w-5" fill="none" stroke="currentColor" viewBox="0 0 24 24" stroke-width="1.75">
+			<path stroke-linecap="round" stroke-linejoin="round" d="M4 6h16M4 12h16M4 18h16" />
+		</svg>
+	</button>
+
+	<!-- Current location display -->
+	{#if location}
+		<div class="hidden items-center gap-2 sm:flex">
+			<img
+				class="h-5 w-5 rounded-full"
+				src="/images/country-flags/{(location.country_code || 'united_nations').toLowerCase()}.svg"
+				alt={location.country}
+			/>
+			<span class="text-sm font-medium text-foreground">
+				{location.name}
+			</span>
+			{#if location.admin1 || location.country}
+				<span class="text-xs text-muted-foreground">
+					{#if location.admin1}{location.admin1},{/if}
+					{location.country}
+				</span>
+			{/if}
+		</div>
+	{/if}
+
+	<!-- Spacer -->
+	<div class="flex-1"></div>
+
+	<!-- Location search -->
+	<div class="w-full max-w-sm md:max-w-md">
+		<LocationSearch
+			label="Search location..."
+			on:location={(event) => {
+				navigateToLocation(event.detail);
+			}}
+		/>
+	</div>
+</header>
+
+<style>
+	.topbar {
+		z-index: 40;
+	}
+</style>

src/lib/components/navigation/weather-nav.svelte

@@ -2,30 +2,44 @@
 	import { resolve } from '$app/paths';
 	import { page } from '$app/stores';
 
-	import { Button } from '$lib/components/ui/button';
+	interface Props {
+		collapsed?: boolean;
+		onToggle?: () => void;
+		onMobileClose?: () => void;
+	}
+
+	let { collapsed = false, onToggle, onMobileClose }: Props = $props();
 
 	const links = [
 		{
-			title: 'Current Weather',
+			title: '7-Day Forecast',
-			url: '/weather/week',
+			url: '/weather/week' as const,
-			description: 'Current conditions and overview',
+			iconPaths: [
-			icon: '🌡️'
+				'M8 7V3m8 4V3m-9 8h10M5 21h14a2 2 0 002-2V7a2 2 0 00-2-2H5a2 2 0 00-2 2v12a2 2 0 002 2z'
+			]
 		},
 		{
 			title: 'Model Comparison',
-			url: '/weather/compare',
+			url: '/weather/compare' as const,
-			description: 'Compare multiple weather models',
+			iconPaths: ['M13 7h8m0 0v8m0-8l-8 8-4-4-6 6']
-			icon: '📊'
 		},
 		{
-			title: '14 Day Forecast',
+			title: '14-Day Forecast',
-			url: '/weather/14-day',
+			url: '/weather/14-day' as const,
-			description: 'Extended forecast with uncertainty',
+			iconPaths: [
-			icon: '📅'
+				'M3 15a4 4 0 004 4h9a5 5 0 10-.1-9.999 5.002 5.002 0 10-9.78 2.096A4.001 4.001 0 003 15z'
+			]
+		},
+		{
+			title: 'Maps',
+			url: '/weather/maps' as const,
+			// Heroicons "map" outline icon
+			iconPaths: [
+				'M9 20l-5.447-2.724A1 1 0 013 16.382V5.618a1 1 0 011.447-.894L9 7m0 13l6-3m-6 3V7m6 10l4.553 2.276A1 1 0 0021 18.382V7.618a1 1 0 00-.553-.894L15 4m0 13V4m0 0L9 7'
+			]
 		}
 	];
 
-	let mobileNavOpened = $state(false);
 	let currentPath = $derived($page.url.pathname);
 
 	const isActive = (url: string) => {
@@ -33,111 +47,132 @@
 	};
 </script>
 
-<nav
+<aside
-	class="sticky top-0 z-50 border-b border-gray-200/50 bg-white/90 shadow-sm backdrop-blur-lg dark:border-gray-700/50 dark:bg-gray-900/90"
+	class="flex h-full flex-col border-r border-sidebar-border bg-sidebar transition-all duration-200"
+	class:w-55={!collapsed}
+	class:w-14={collapsed}
 >
-	<div class="container mx-auto px-6">
+	<!-- Sidebar header -->
-		<div class="flex h-16 items-center justify-between">
+	<div class="flex items-center border-b border-sidebar-border px-3 py-4">
-			<!-- Logo -->
+		{#if !collapsed}
-			<div class="flex items-center space-x-3">
+			<a
-				<div class="rounded-lg bg-gradient-to-r from-blue-600 to-purple-600 p-2">
+				href={resolve('/weather/week')}
-					<svg class="h-6 w-6 text-white" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+				class="flex items-center gap-2.5 px-1"
+				onclick={onMobileClose}
+			>
+				<div
+					class="flex h-8 w-8 shrink-0 items-center justify-center rounded-lg bg-primary text-primary-foreground"
+				>
+					<svg
+						class="h-4.5 w-4.5"
+						fill="none"
+						stroke="currentColor"
+						viewBox="0 0 24 24"
+						stroke-width="2"
+					>
 						<path
 							stroke-linecap="round"
 							stroke-linejoin="round"
-							stroke-width="2"
 							d="M3 15a4 4 0 004 4h9a5 5 0 10-.1-9.999 5.002 5.002 0 10-9.78 2.096A4.001 4.001 0 003 15z"
 						/>
 					</svg>
 				</div>
-				<a
+				<span class="text-sm font-semibold whitespace-nowrap text-sidebar-foreground">
-					href={resolve('/')}
+					Open-Meteo
-					class="text-xl font-bold text-gray-900 transition-colors hover:text-blue-600 dark:text-white"
+				</span>
+			</a>
+		{:else}
+			<a
+				href={resolve('/weather/week')}
+				class="mx-auto flex h-8 w-8 items-center justify-center rounded-lg bg-primary text-primary-foreground"
+				onclick={onMobileClose}
+				aria-label="Open-Meteo Home"
+			>
+				<svg
+					class="h-4.5 w-4.5"
+					fill="none"
+					stroke="currentColor"
+					viewBox="0 0 24 24"
+					stroke-width="2"
 				>
-					Open-Meteo Weather
+					<path
-				</a>
+						stroke-linecap="round"
-			</div>
+						stroke-linejoin="round"
-
+						d="M3 15a4 4 0 004 4h9a5 5 0 10-.1-9.999 5.002 5.002 0 10-9.78 2.096A4.001 4.001 0 003 15z"
-			<!-- Desktop Navigation -->
+					/>
-			<div class="hidden items-center space-x-2 md:flex">
+				</svg>
-				{#each links as link (link.title)}
+			</a>
-					<Button
-						href={link.url}
-						variant={isActive(link.url) ? 'default' : 'ghost'}
-						size="sm"
-						class="group relative px-4 py-2 {isActive(link.url)
-							? 'bg-blue-600 text-white shadow-md'
-							: 'hover:bg-blue-50 dark:hover:bg-blue-900/20'}"
-					>
-						<span class="mr-1">{link.icon}</span>
-						{link.title}
-					</Button>
-				{/each}
-			</div>
-
-			<!-- Mobile menu button -->
-			<div class="md:hidden">
-				<Button
-					variant="ghost"
-					size="sm"
-					class="rounded-lg"
-					onclick={() => (mobileNavOpened = !mobileNavOpened)}
-				>
-					<svg class="h-6 w-6" fill="none" stroke="currentColor" viewBox="0 0 24 24">
-						{#if mobileNavOpened}
-							<path
-								stroke-linecap="round"
-								stroke-linejoin="round"
-								stroke-width="2"
-								d="M6 18L18 6M6 6l12 12"
-							/>
-						{:else}
-							<path
-								stroke-linecap="round"
-								stroke-linejoin="round"
-								stroke-width="2"
-								d="M4 6h16M4 12h16M4 18h16"
-							/>
-						{/if}
-					</svg>
-				</Button>
-			</div>
-		</div>
-
-		<!-- Mobile Navigation -->
-		{#if mobileNavOpened}
-			<div class="border-t border-gray-200 py-4 md:hidden dark:border-gray-700">
-				<div class="space-y-2">
-					{#each links as link (link.title)}
-						<Button
-							href={link.url}
-							variant={isActive(link.url) ? 'default' : 'ghost'}
-							class="w-full justify-start py-3 {isActive(link.url) ? 'bg-blue-600 text-white' : ''}"
-							onclick={() => (mobileNavOpened = false)}
-						>
-							<div class="flex items-center space-x-3">
-								<span class="text-lg">{link.icon}</span>
-								<div class="text-left">
-									<div class="font-medium">{link.title}</div>
-									<div
-										class="text-xs {isActive(link.url)
-											? 'text-blue-100'
-											: 'text-gray-500 dark:text-gray-400'}"
-									>
-										{link.description}
-									</div>
-								</div>
-							</div>
-						</Button>
-					{/each}
-				</div>
-			</div>
 		{/if}
 	</div>
-</nav>
+
+	<!-- Navigation links -->
+	<nav class="flex-1 space-y-1 px-2 py-3">
+		{#each links as link (link.title)}
+			{@const active = isActive(link.url)}
+			<a
+				href={resolve(link.url)}
+				class="relative flex items-center rounded-md px-2.5 py-2 text-sm font-medium text-sidebar-foreground opacity-70 transition-colors duration-150 hover:bg-sidebar-accent hover:text-sidebar-accent-foreground hover:opacity-100 {active
+					? 'bg-sidebar-accent text-sidebar-primary! opacity-100! font-semibold! nav-active'
+					: ''}"
+				title={collapsed ? link.title : undefined}
+				onclick={onMobileClose}
+			>
+				<div class="flex h-5 w-5 shrink-0 items-center justify-center">
+					<svg
+						class="h-4.5 w-4.5"
+						fill="none"
+						stroke="currentColor"
+						viewBox="0 0 24 24"
+						stroke-width="1.75"
+					>
+						{#each link.iconPaths as d (d)}
+							<path stroke-linecap="round" stroke-linejoin="round" {d} />
+						{/each}
+					</svg>
+				</div>
+				{#if !collapsed}
+					<span class="ml-2.5 whitespace-nowrap">{link.title}</span>
+				{/if}
+			</a>
+		{/each}
+	</nav>
+
+	<!-- Collapse toggle -->
+	<div class="border-t border-sidebar-border px-2 py-3">
+		<button
+			class="relative flex w-full items-center rounded-md px-2.5 py-2 text-sm font-medium text-sidebar-foreground opacity-70 transition-colors duration-150 hover:bg-sidebar-accent hover:text-sidebar-accent-foreground hover:opacity-100"
+			onclick={onToggle}
+			title={collapsed ? 'Expand sidebar' : 'Collapse sidebar'}
+		>
+			<div class="flex h-5 w-5 shrink-0 items-center justify-center">
+				<svg
+					class="h-4.5 w-4.5 transition-transform duration-200"
+					class:rotate-180={!collapsed}
+					fill="none"
+					stroke="currentColor"
+					viewBox="0 0 24 24"
+					stroke-width="1.75"
+				>
+					<path stroke-linecap="round" stroke-linejoin="round" d="M11 19l-7-7 7-7m8 14l-7-7 7-7" />
+				</svg>
+			</div>
+			{#if !collapsed}
+				<span class="ml-2.5 whitespace-nowrap">Collapse</span>
+			{/if}
+		</button>
+	</div>
+</aside>
 
 <style>
-	:global(.container) {
+	.nav-active::before {
-		max-width: 1200px;
+		content: '';
+		position: absolute;
+		left: 0;
+		top: 50%;
+		transform: translateY(-50%);
+		width: 3px;
+		height: 60%;
+		border-radius: 0 3px 3px 0;
+		background: var(--sidebar-primary);
 	}
 </style>

src/lib/components/ui/popover/index.ts

@@ -0,0 +1,19 @@
+import Close from './popover-close.svelte';
+import Content from './popover-content.svelte';
+import Portal from './popover-portal.svelte';
+import Trigger from './popover-trigger.svelte';
+import Root from './popover.svelte';
+
+export {
+	Root,
+	Content,
+	Trigger,
+	Close,
+	Portal,
+	//
+	Root as Popover,
+	Content as PopoverContent,
+	Trigger as PopoverTrigger,
+	Close as PopoverClose,
+	Portal as PopoverPortal
+};

src/lib/components/ui/popover/popover-close.svelte

@@ -0,0 +1,7 @@
+<script lang="ts">
+	import { Popover as PopoverPrimitive } from 'bits-ui';
+
+	let { ref = $bindable(null), ...restProps }: PopoverPrimitive.CloseProps = $props();
+</script>
+
+<PopoverPrimitive.Close bind:ref data-slot="popover-close" {...restProps} />

src/lib/components/ui/popover/popover-content.svelte

@@ -0,0 +1,34 @@
+<script lang="ts">
+	import { Popover as PopoverPrimitive } from 'bits-ui';
+
+	import { type WithoutChildrenOrChild, cn } from '$lib/utils/ui.js';
+
+	import PopoverPortal from './popover-portal.svelte';
+
+	import type { ComponentProps } from 'svelte';
+
+	let {
+		ref = $bindable(null),
+		class: className,
+		sideOffset = 4,
+		align = 'center',
+		portalProps,
+		...restProps
+	}: PopoverPrimitive.ContentProps & {
+		portalProps?: WithoutChildrenOrChild<ComponentProps<typeof PopoverPortal>>;
+	} = $props();
+</script>
+
+<PopoverPortal {...portalProps}>
+	<PopoverPrimitive.Content
+		bind:ref
+		data-slot="popover-content"
+		{sideOffset}
+		{align}
+		class={cn(
+			'bg-popover text-popover-foreground data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0 data-[state=closed]:zoom-out-95 data-[state=open]:zoom-in-95 data-[side=bottom]:slide-in-from-top-2 data-[side=left]:slide-in-from-end-2 data-[side=right]:slide-in-from-start-2 data-[side=top]:slide-in-from-bottom-2 z-50 w-72 origin-(--bits-popover-content-transform-origin) rounded-md border p-4 shadow-md outline-hidden',
+			className
+		)}
+		{...restProps}
+	/>
+</PopoverPortal>

src/lib/components/ui/popover/popover-portal.svelte

@@ -0,0 +1,7 @@
+<script lang="ts">
+	import { Popover as PopoverPrimitive } from 'bits-ui';
+
+	let { ...restProps }: PopoverPrimitive.PortalProps = $props();
+</script>
+
+<PopoverPrimitive.Portal {...restProps} />

src/lib/components/ui/popover/popover-trigger.svelte

@@ -0,0 +1,18 @@
+<script lang="ts">
+	import { Popover as PopoverPrimitive } from 'bits-ui';
+
+	import { cn } from '$lib/utils/ui.js';
+
+	let {
+		ref = $bindable(null),
+		class: className,
+		...restProps
+	}: PopoverPrimitive.TriggerProps = $props();
+</script>
+
+<PopoverPrimitive.Trigger
+	bind:ref
+	data-slot="popover-trigger"
+	class={cn('', className)}
+	{...restProps}
+/>

src/lib/components/ui/popover/popover.svelte

@@ -0,0 +1,7 @@
+<script lang="ts">
+	import { Popover as PopoverPrimitive } from 'bits-ui';
+
+	let { open = $bindable(false), ...restProps }: PopoverPrimitive.RootProps = $props();
+</script>
+
+<PopoverPrimitive.Root bind:open {...restProps} />

src/lib/services/index.ts

@@ -0,0 +1,27 @@
+export {
+	fetchWeekForecast,
+	fetchModelComparison,
+	fetchEnsembleForecast,
+	range,
+	getTimestamps,
+	getDates,
+	getValues,
+	getInt64Values,
+	unitToDisplayString
+} from './weather';
+
+export type {
+	WeatherLocation,
+	WeatherUnitParams,
+	MarkArea,
+	WeekForecastParams,
+	WeekHourlyData,
+	WeekDailyData,
+	WeekForecastResult,
+	ModelCompareParams,
+	ModelSeriesData,
+	ModelCompareResult,
+	EnsembleForecastParams,
+	EnsembleVariableData,
+	EnsembleForecastResult
+} from './weather';

src/lib/services/weather.ts

@@ -0,0 +1,760 @@
+/**
+ * Weather Data Service
+ *
+ * Centralized, type-safe weather data fetching using the Open-Meteo SDK
+ * with protobuf (FlatBuffers) transport for efficient data transfer.
+ *
+ * All weather data fetching flows through this service, providing:
+ * - Type-safe request parameters and response structures
+ * - Automatic retries with exponential backoff (via the SDK)
+ * - Efficient binary protobuf transport instead of JSON
+ * - Consistent timestamp and unit handling
+ */
+import { Unit } from '@openmeteo/sdk/unit';
+import { fetchWeatherApi } from 'openmeteo';
+
+import { buildDaylightMarkAreas } from '$lib/utils/echarts';
+
+import type { VariableWithValues } from '@openmeteo/sdk/variable-with-values';
+import type { VariablesWithTime } from '@openmeteo/sdk/variables-with-time';
+
+// ─── Constants ──────────────────────────────────────────────────────────────────
+
+const FORECAST_URL = 'https://api.open-meteo.com/v1/forecast';
+const ENSEMBLE_URL = 'https://ensemble-api.open-meteo.com/v1/ensemble';
+
+// ─── Core Helpers ───────────────────────────────────────────────────────────────
+
+/**
+ * Generates an array of numbers from start (inclusive) to stop (exclusive) with the given step.
+ * Used to reconstruct timestamp arrays from the protobuf time/timeEnd/interval fields.
+ */
+export function range(start: number, stop: number, step: number): number[] {
+	return Array.from(
+		{ length: Math.max(0, Math.ceil((stop - start) / step)) },
+		(_, i) => start + i * step
+	);
+}
+
+/**
+ * Extracts timestamp array (in milliseconds, with UTC offset applied) from a VariablesWithTime block.
+ */
+export function getTimestamps(timeBlock: VariablesWithTime): number[] {
+	const start = Number(timeBlock.time());
+	const end = Number(timeBlock.timeEnd());
+	const interval = timeBlock.interval();
+	return range(start, end, interval).map((t) => t * 1000);
+}
+
+/**
+ * Extracts Date array (with UTC offset applied) from a VariablesWithTime block.
+ */
+export function getDates(timeBlock: VariablesWithTime): Date[] {
+	return getTimestamps(timeBlock).map((t) => new Date(t));
+}
+
+/**
+ * Extracts a Float32Array of values from a VariableWithValues, returning a regular number[].
+ * Falls back to an empty array if no values are present.
+ */
+export function getValues(variable: VariableWithValues): number[] {
+	const arr = variable.valuesArray();
+	if (!arr) return [];
+	return Array.from(arr);
+}
+
+/**
+ * Extracts Int64 (BigInt) values from a VariableWithValues, converting to number[].
+ * Used for variables stored as unix timestamps (e.g. sunrise, sunset).
+ */
+export function getInt64Values(variable: VariableWithValues): number[] {
+	const len = variable.valuesInt64Length();
+	const result: number[] = [];
+	for (let i = 0; i < len; i++) {
+		const val = variable.valuesInt64(i);
+		result.push(val !== null ? Number(val) : 0);
+	}
+	return result;
+}
+
+/**
+ * Converts the SDK Unit enum to a human-readable display string.
+ */
+export function unitToDisplayString(unit: Unit): string {
+	switch (unit) {
+		case Unit.celsius:
+			return '°C';
+		case Unit.fahrenheit:
+			return '°F';
+		case Unit.millimetre:
+			return 'mm';
+		case Unit.inch:
+			return 'in';
+		case Unit.kilometres_per_hour:
+			return 'km/h';
+		case Unit.metre_per_second:
+			return 'm/s';
+		case Unit.miles_per_hour:
+			return 'mph';
+		case Unit.knots:
+			return 'kn';
+		case Unit.percentage:
+			return '%';
+		case Unit.hectopascal:
+			return 'hPa';
+		case Unit.degree_direction:
+			return '°';
+		case Unit.wmo_code:
+			return 'wmo code';
+		case Unit.seconds:
+			return 's';
+		case Unit.hours:
+			return 'h';
+		case Unit.watt_per_square_metre:
+			return 'W/m²';
+		case Unit.megajoule_per_square_metre:
+			return 'MJ/m²';
+		case Unit.joule_per_kilogram:
+			return 'J/kg';
+		case Unit.metre:
+			return 'm';
+		case Unit.centimetre:
+			return 'cm';
+		case Unit.kilogram_per_square_metre:
+			return 'kg/m²';
+		case Unit.kilopascal:
+			return 'kPa';
+		case Unit.pascal:
+			return 'Pa';
+		case Unit.fraction:
+			return '';
+		case Unit.dimensionless:
+			return '';
+		case Unit.dimensionless_integer:
+			return '';
+		case Unit.unix_time:
+			return 'unixtime';
+		case Unit.grains_per_cubic_metre:
+			return 'grains/m³';
+		case Unit.micrograms_per_cubic_metre:
+			return 'µg/m³';
+		default:
+			return '';
+	}
+}
+
+// ─── Shared Types ───────────────────────────────────────────────────────────────
+
+export interface WeatherLocation {
+	latitude: number;
+	longitude: number;
+	timezone?: string;
+}
+
+export interface WeatherUnitParams {
+	temperature_unit?: 'celsius' | 'fahrenheit';
+	wind_speed_unit?: 'kmh' | 'ms' | 'mph' | 'kn';
+	precipitation_unit?: 'mm' | 'inch';
+}
+
+export type MarkArea = [{ xAxis: number; itemStyle: { color: string } }, { xAxis: number }];
+
+// ─── Week Forecast Types ────────────────────────────────────────────────────────
+
+export interface WeekForecastParams extends WeatherLocation, WeatherUnitParams {
+	model?: string;
+	forecast_days?: number;
+	past_days?: number;
+}
+
+export interface WeekHourlyData {
+	temperature_2m: number[];
+	precipitation: number[];
+	precipitation_probability: number[];
+	weather_code: number[];
+	windspeed_10m: number[];
+	winddirection_10m: number[];
+	cloud_cover: number[];
+	relative_humidity_2m: number[];
+	apparent_temperature: number[];
+	dew_point_2m: number[];
+}
+
+export interface WeekDailyData {
+	weather_code: number[];
+	temperature_2m_max: number[];
+	temperature_2m_min: number[];
+	sunrise: number[];
+	sunset: number[];
+	sunshine_duration: number[];
+	precipitation_sum: number[];
+	windspeed_10m_max: number[];
+	windgusts_10m_max: number[];
+	winddirection_10m_dominant: number[];
+}
+
+export interface WeekForecastResult {
+	hourly: WeekHourlyData;
+	daily: WeekDailyData;
+	utcOffsetSeconds: number;
+	timezone: string;
+	hourlyTimestamps: number[];
+	hourlyDates: Date[];
+	dailyDates: Date[];
+	markAreas: MarkArea[];
+}
+
+// ─── Model Comparison Types ─────────────────────────────────────────────────────
+
+export interface ModelCompareParams extends WeatherLocation, WeatherUnitParams {
+	hourlyVariables: string[];
+	models: string[];
+}
+
+export interface ModelSeriesData {
+	modelName: string;
+	variables: Record<string, number[]>;
+}
+
+export interface ModelCompareResult {
+	models: ModelSeriesData[];
+	timestamps: number[];
+	utcOffsetSeconds: number;
+	timezone: string;
+	markAreas: MarkArea[];
+	sunrise: number[];
+	sunset: number[];
+	units: Record<string, string>;
+	/** Flat record compatible with the existing chart utilities (keys like "temperature_2m_icon_seamless") */
+	hourlyFlat: Record<string, number[]>;
+	hourlyUnitsFlat: Record<string, string>;
+}
+
+// ─── Ensemble Forecast Types ────────────────────────────────────────────────────
+
+export interface EnsembleForecastParams extends WeatherLocation, WeatherUnitParams {
+	hourlyVariables: string[];
+	models: string[];
+	forecast_days?: number;
+}
+
+export interface EnsembleVariableData {
+	members: number[][];
+	average: number[];
+	min: number[];
+	max: number[];
+	unit: string;
+}
+
+export interface EnsembleForecastResult {
+	variables: Record<string, EnsembleVariableData>;
+	timestamps: number[];
+	utcOffsetSeconds: number;
+	timezone: string;
+	markAreas: MarkArea[];
+	/** Flat record compatible with existing chart utilities (keys like "temperature_2m_member00") */
+	hourlyFlat: Record<string, number[]>;
+	hourlyUnitsFlat: Record<string, string>;
+}
+
+// ─── Week Forecast Fetch ────────────────────────────────────────────────────────
+
+const WEEK_HOURLY_VARS = [
+	'temperature_2m',
+	'precipitation',
+	'precipitation_probability',
+	'weather_code',
+	'wind_speed_10m',
+	'wind_direction_10m',
+	'cloud_cover',
+	'relative_humidity_2m',
+	'apparent_temperature',
+	'dew_point_2m'
+] as const;
+
+const WEEK_DAILY_VARS = [
+	'weather_code',
+	'temperature_2m_max',
+	'temperature_2m_min',
+	'sunrise',
+	'sunset',
+	'sunshine_duration',
+	'precipitation_sum',
+	'wind_speed_10m_max',
+	'wind_gusts_10m_max',
+	'wind_direction_10m_dominant'
+] as const;
+
+/**
+ * Fetches the 7-day (week) weather forecast for a single location and model.
+ * Returns typed hourly and daily data structures.
+ */
+export async function fetchWeekForecast(params: WeekForecastParams): Promise<WeekForecastResult> {
+	const forecastDays = params.forecast_days ?? 6;
+	const pastDays = params.past_days ?? 0;
+	const modelParam = params.model && params.model !== 'best_match' ? params.model : undefined;
+
+	const apiParams: Record<string, string | number | undefined> = {
+		latitude: params.latitude,
+		longitude: params.longitude,
+		hourly: WEEK_HOURLY_VARS.join(','),
+		daily: WEEK_DAILY_VARS.join(','),
+		temperature_unit: params.temperature_unit ?? 'celsius',
+		wind_speed_unit: params.wind_speed_unit ?? 'kmh',
+		precipitation_unit: params.precipitation_unit ?? 'mm',
+		forecast_days: forecastDays,
+		past_days: pastDays,
+		models: modelParam,
+		timezone: params.timezone
+	};
+
+	// Remove undefined values
+	const cleanParams: Record<string, string> = {};
+	for (const [key, value] of Object.entries(apiParams)) {
+		if (value !== undefined) {
+			cleanParams[key] = String(value);
+		}
+	}
+
+	const responses = await fetchWeatherApi(FORECAST_URL, cleanParams);
+	const response = responses[0];
+	const utcOffsetSeconds = response.utcOffsetSeconds();
+	const timezone = response.timezone() ?? params.timezone ?? 'UTC';
+
+	const hourlyBlock = response.hourly()!;
+	const dailyBlock = response.daily()!;
+
+	// Hourly: variables are in the same order as WEEK_HOURLY_VARS
+	const hourlyTimestamps = getTimestamps(hourlyBlock);
+	const hourlyDates = hourlyTimestamps.map((t) => new Date(t));
+
+	const hourly: WeekHourlyData = {
+		temperature_2m: getValues(hourlyBlock.variables(0)!),
+		precipitation: getValues(hourlyBlock.variables(1)!),
+		precipitation_probability: getValues(hourlyBlock.variables(2)!),
+		weather_code: getValues(hourlyBlock.variables(3)!),
+		windspeed_10m: getValues(hourlyBlock.variables(4)!),
+		winddirection_10m: getValues(hourlyBlock.variables(5)!),
+		cloud_cover: getValues(hourlyBlock.variables(6)!),
+		relative_humidity_2m: getValues(hourlyBlock.variables(7)!),
+		apparent_temperature: getValues(hourlyBlock.variables(8)!),
+		dew_point_2m: getValues(hourlyBlock.variables(9)!)
+	};
+
+	// Daily: variables are in the same order as WEEK_DAILY_VARS
+	const dailyDates = getDates(dailyBlock);
+
+	const sunriseVar = dailyBlock.variables(3)!;
+	const sunsetVar = dailyBlock.variables(4)!;
+
+	const daily: WeekDailyData = {
+		weather_code: getValues(dailyBlock.variables(0)!),
+		temperature_2m_max: getValues(dailyBlock.variables(1)!),
+		temperature_2m_min: getValues(dailyBlock.variables(2)!),
+		sunrise: getInt64Values(sunriseVar),
+		sunset: getInt64Values(sunsetVar),
+		sunshine_duration: getValues(dailyBlock.variables(5)!),
+		precipitation_sum: getValues(dailyBlock.variables(6)!),
+		windspeed_10m_max: getValues(dailyBlock.variables(7)!),
+		windgusts_10m_max: getValues(dailyBlock.variables(8)!),
+		winddirection_10m_dominant: getValues(dailyBlock.variables(9)!)
+	};
+
+	const markAreas = buildDaylightMarkAreas(daily.sunrise, daily.sunset);
+
+	return {
+		hourly,
+		daily,
+		utcOffsetSeconds,
+		timezone,
+		hourlyTimestamps,
+		hourlyDates,
+		dailyDates,
+		markAreas
+	};
+}
+
+// ─── Model Comparison Fetch ─────────────────────────────────────────────────────
+
+/**
+ * Fetches forecast data for multiple models for comparison.
+ * Also fetches daily sunrise/sunset for daylight mark areas.
+ *
+ * Returns both a typed model array structure and a flat record structure
+ * compatible with existing chart utilities.
+ */
+export async function fetchModelComparison(
+	params: ModelCompareParams
+): Promise<ModelCompareResult> {
+	const forecastApiParams: Record<string, string | number | undefined> = {
+		latitude: String(params.latitude),
+		longitude: String(params.longitude),
+		hourly: params.hourlyVariables.join(','),
+		models: params.models.join(','),
+		daily: 'sunrise,sunset',
+		temperature_unit: params.temperature_unit ?? 'celsius',
+		wind_speed_unit: params.wind_speed_unit ?? 'kmh',
+		precipitation_unit: params.precipitation_unit ?? 'mm',
+		timezone: params.timezone
+	};
+
+	const responses = await fetchWeatherApi(FORECAST_URL, forecastApiParams);
+
+	// With multiple models, we get one response per model
+	const firstResponse = responses[0];
+	const utcOffsetSeconds = firstResponse.utcOffsetSeconds();
+	const timezone = firstResponse.timezone() ?? params.timezone ?? 'UTC';
+
+	const hourlyBlock = firstResponse.hourly()!;
+	const timestamps = getTimestamps(hourlyBlock);
+
+	// Extract sunrise/sunset from the first response's daily block
+	let markAreas: MarkArea[] = [];
+	let sunrise: number[] = [];
+	let sunset: number[] = [];
+	const dailyBlock = firstResponse.daily();
+	if (dailyBlock) {
+		const sunriseVar = dailyBlock.variables(0)!;
+		const sunsetVar = dailyBlock.variables(1)!;
+		sunrise = getInt64Values(sunriseVar);
+		sunset = getInt64Values(sunsetVar);
+		markAreas = buildDaylightMarkAreas(sunrise, sunset);
+	}
+
+	// Process each model's response
+	const models: ModelSeriesData[] = [];
+	const hourlyFlat: Record<string, number[]> = {};
+	const hourlyUnitsFlat: Record<string, string> = {};
+	const units: Record<string, string> = {};
+
+	// Add time to flat record
+	const timeInUnixSeconds = range(
+		Number(hourlyBlock.time()),
+		Number(hourlyBlock.timeEnd()),
+		hourlyBlock.interval()
+	);
+	hourlyFlat['time'] = timeInUnixSeconds;
+
+	for (const response of responses) {
+		const modelHourly = response.hourly();
+		if (!modelHourly) continue;
+
+		// Determine model name from the response
+		const modelEnum = response.model();
+		const modelName = modelEnumToString(modelEnum);
+
+		const modelData: ModelSeriesData = {
+			modelName,
+			variables: {}
+		};
+
+		for (let vi = 0; vi < params.hourlyVariables.length; vi++) {
+			const varName = params.hourlyVariables[vi];
+			const variable = modelHourly.variables(vi);
+			if (!variable) continue;
+
+			const values = getValues(variable);
+			modelData.variables[varName] = values;
+
+			// Build flat key like "temperature_2m_icon_seamless"
+			const flatKey = `${varName}_${modelName}`;
+			hourlyFlat[flatKey] = values;
+
+			// Record unit
+			const unitStr = unitToDisplayString(variable.unit());
+			units[varName] = unitStr;
+			hourlyUnitsFlat[flatKey] = unitStr;
+		}
+
+		models.push(modelData);
+	}
+
+	return {
+		models,
+		timestamps,
+		utcOffsetSeconds,
+		timezone,
+		markAreas,
+		sunrise,
+		sunset,
+		units,
+		hourlyFlat,
+		hourlyUnitsFlat
+	};
+}
+
+// ─── Ensemble Forecast Fetch ────────────────────────────────────────────────────
+
+/**
+ * Fetches ensemble forecast data from the ensemble API.
+ * Separately fetches daily sunrise/sunset from the standard forecast API.
+ *
+ * Returns typed ensemble data with per-variable member arrays, averages, and spreads,
+ * plus a flat record structure for compatibility with existing chart utilities.
+ */
+export async function fetchEnsembleForecast(
+	params: EnsembleForecastParams
+): Promise<EnsembleForecastResult> {
+	const forecastDays = params.forecast_days ?? 14;
+
+	const ensembleParams: Record<string, string | number | undefined> = {
+		latitude: String(params.latitude),
+		longitude: String(params.longitude),
+		hourly: params.hourlyVariables.join(','),
+		models: params.models.join(','),
+		forecast_days: String(forecastDays),
+		temperature_unit: params.temperature_unit ?? 'celsius',
+		wind_speed_unit: params.wind_speed_unit ?? 'kmh',
+		precipitation_unit: params.precipitation_unit ?? 'mm',
+		timezone: params.timezone
+	};
+
+	const dailyParams: Record<string, string> = {
+		latitude: String(params.latitude),
+		longitude: String(params.longitude),
+		daily: 'sunrise,sunset',
+		forecast_days: String(forecastDays),
+		temperature_unit: params.temperature_unit ?? 'celsius'
+	};
+
+	// Fetch ensemble and daily data in parallel
+	const [ensembleResponses, dailyResponses] = await Promise.all([
+		fetchWeatherApi(ENSEMBLE_URL, ensembleParams),
+		fetchWeatherApi(FORECAST_URL, dailyParams)
+	]);
+
+	const ensembleResponse = ensembleResponses[0];
+	const utcOffsetSeconds = ensembleResponse.utcOffsetSeconds();
+	const timezone = ensembleResponse.timezone() ?? params.timezone ?? 'UTC';
+
+	const hourlyBlock = ensembleResponse.hourly()!;
+	const timestamps = getTimestamps(hourlyBlock);
+	const timeLength = timestamps.length;
+
+	// Extract sunrise/sunset for mark areas
+	let markAreas: MarkArea[] = [];
+	if (dailyResponses.length > 0) {
+		const dailyResponse = dailyResponses[0];
+		const dailyBlock = dailyResponse.daily();
+		if (dailyBlock) {
+			const sunrise = getInt64Values(dailyBlock.variables(0)!);
+			const sunset = getInt64Values(dailyBlock.variables(1)!);
+			markAreas = buildDaylightMarkAreas(sunrise, sunset);
+		}
+	}
+
+	// Process ensemble variables
+	// Each requested variable will have multiple entries in the variables list (one per ensemble member)
+	const variables: Record<string, EnsembleVariableData> = {};
+	const hourlyFlat: Record<string, number[]> = {};
+	const hourlyUnitsFlat: Record<string, string> = {};
+
+	// Add time to flat record
+	const timeInUnixSeconds = range(
+		Number(hourlyBlock.time()),
+		Number(hourlyBlock.timeEnd()),
+		hourlyBlock.interval()
+	);
+	hourlyFlat['time'] = timeInUnixSeconds;
+
+	// Group variables by their requested variable name
+	// The SDK provides variables indexed sequentially:
+	// For N requested variables and M ensemble members, we get N*M variables
+	// ordered as: var0_member0, var0_member1, ..., var0_memberM-1, var1_member0, ...
+	const totalVariables = hourlyBlock.variablesLength();
+	const numRequestedVars = params.hourlyVariables.length;
+
+	if (totalVariables > 0 && numRequestedVars > 0) {
+		const membersPerVar = Math.floor(totalVariables / numRequestedVars);
+
+		for (let vi = 0; vi < numRequestedVars; vi++) {
+			const varName = params.hourlyVariables[vi];
+			const members: number[][] = [];
+			let unitStr = '';
+
+			for (let mi = 0; mi < membersPerVar; mi++) {
+				const varIdx = vi * membersPerVar + mi;
+				const variable = hourlyBlock.variables(varIdx);
+				if (!variable) continue;
+
+				const values = getValues(variable);
+				members.push(values);
+
+				if (mi === 0) {
+					unitStr = unitToDisplayString(variable.unit());
+				}
+
+				// Build flat key compatible with JSON API format
+				const memberStr = String(mi).padStart(2, '0');
+				const flatKey = `${varName}_member${memberStr}`;
+				hourlyFlat[flatKey] = values;
+				hourlyUnitsFlat[flatKey] = unitStr;
+			}
+
+			// Calculate average, min, max across members
+			const average = new Array<number>(timeLength).fill(0);
+			const min = new Array<number>(timeLength).fill(Infinity);
+			const max = new Array<number>(timeLength).fill(-Infinity);
+
+			for (let t = 0; t < timeLength; t++) {
+				let count = 0;
+				for (const memberValues of members) {
+					const val = memberValues[t];
+					if (val !== null && val !== undefined && !isNaN(val)) {
+						average[t] += val;
+						count++;
+						if (val < min[t]) min[t] = val;
+						if (val > max[t]) max[t] = val;
+					}
+				}
+				if (count > 0) {
+					average[t] = Math.round((average[t] / count) * 10) / 10;
+				}
+				if (min[t] === Infinity) min[t] = 0;
+				if (max[t] === -Infinity) max[t] = 0;
+			}
+
+			variables[varName] = {
+				members,
+				average,
+				min,
+				max,
+				unit: unitStr
+			};
+		}
+	}
+
+	return {
+		variables,
+		timestamps,
+		utcOffsetSeconds,
+		timezone,
+		markAreas,
+		hourlyFlat,
+		hourlyUnitsFlat
+	};
+}
+
+// ─── Model Enum Mapping ─────────────────────────────────────────────────────────
+
+/**
+ * Maps the SDK Model enum integer to a string model name.
+ * This table must stay in sync with the @openmeteo/sdk Model enum.
+ */
+function modelEnumToString(modelEnum: number): string {
+	const modelMap: Record<number, string> = {
+		0: 'undefined',
+		1: 'best_match',
+		2: 'gfs_seamless',
+		3: 'gfs_global',
+		4: 'gfs_hrrr',
+		5: 'meteofrance_seamless',
+		6: 'meteofrance_arpege_seamless',
+		7: 'meteofrance_arpege_world',
+		8: 'meteofrance_arpege_europe',
+		9: 'meteofrance_arome_seamless',
+		10: 'meteofrance_arome_france',
+		11: 'meteofrance_arome_france_hd',
+		12: 'jma_seamless',
+		13: 'jma_msm',
+		14: 'jms_gsm',
+		15: 'jma_gsm',
+		16: 'gem_seamless',
+		17: 'gem_global',
+		18: 'gem_regional',
+		19: 'gem_hrdps_continental',
+		20: 'icon_seamless',
+		21: 'icon_global',
+		22: 'icon_eu',
+		23: 'icon_d2',
+		24: 'ecmwf_ifs04',
+		25: 'metno_nordic',
+		26: 'era5_seamless',
+		27: 'era5',
+		28: 'cerra',
+		29: 'era5_land',
+		30: 'ecmwf_ifs',
+		31: 'gwam',
+		32: 'ewam',
+		33: 'glofas_seamless_v3',
+		34: 'glofas_forecast_v3',
+		35: 'glofas_consolidated_v3',
+		36: 'glofas_seamless_v4',
+		37: 'glofas_forecast_v4',
+		38: 'glofas_consolidated_v4',
+		39: 'gfs025',
+		40: 'gfs05',
+		41: 'CMCC_CM2_VHR4',
+		42: 'FGOALS_f3_H_highresSST',
+		43: 'FGOALS_f3_H',
+		44: 'HiRAM_SIT_HR',
+		45: 'MRI_AGCM3_2_S',
+		46: 'EC_Earth3P_HR',
+		47: 'MPI_ESM1_2_XR',
+		48: 'NICAM16_8S',
+		49: 'cams_europe',
+		50: 'cams_global',
+		51: 'cfsv2',
+		52: 'era5_ocean',
+		53: 'cma_grapes_global',
+		54: 'bom_access_global',
+		55: 'bom_access_global_ensemble',
+		56: 'arpae_cosmo_seamless',
+		57: 'arpae_cosmo_2i',
+		58: 'arpae_cosmo_2i_ruc',
+		59: 'arpae_cosmo_5m',
+		60: 'ecmwf_ifs025',
+		61: 'ecmwf_aifs025',
+		62: 'gfs013',
+		63: 'gfs_graphcast025',
+		64: 'ecmwf_wam025',
+		65: 'meteofrance_wave',
+		66: 'meteofrance_currents',
+		67: 'ecmwf_wam025_ensemble',
+		68: 'ncep_gfswave025',
+		69: 'ncep_gefswave025',
+		70: 'knmi_seamless',
+		71: 'knmi_harmonie_arome_europe',
+		72: 'knmi_harmonie_arome_netherlands',
+		73: 'dmi_seamless',
+		74: 'dmi_harmonie_arome_europe',
+		75: 'metno_seamless',
+		76: 'era5_ensemble',
+		77: 'ecmwf_ifs_analysis',
+		78: 'ecmwf_ifs_long_window',
+		79: 'ecmwf_ifs_analysis_long_window',
+		80: 'ukmo_global_deterministic_10km',
+		81: 'ukmo_uk_deterministic_2km',
+		82: 'ukmo_seamless',
+		83: 'ncep_gfswave016',
+		84: 'ncep_nbm_conus',
+		85: 'ukmo_global_ensemble_20km',
+		86: 'ecmwf_aifs025_single',
+		87: 'jma_jaxa_himawari',
+		88: 'eumetsat_sarah3',
+		89: 'eumetsat_lsa_saf_msg',
+		90: 'eumetsat_lsa_saf_iodc',
+		91: 'satellite_radiation_seamless',
+		92: 'kma_gdps',
+		93: 'kma_ldps',
+		94: 'kma_seamless',
+		95: 'italia_meteo_arpae_icon_2i',
+		96: 'ukmo_uk_ensemble_2km',
+		97: 'meteofrance_arome_france_hd_15min',
+		98: 'meteofrance_arome_france_15min',
+		99: 'meteoswiss_icon_ch1',
+		100: 'meteoswiss_icon_ch2',
+		101: 'meteoswiss_icon_ch1_ensemble',
+		102: 'meteoswiss_icon_ch2_ensemble',
+		103: 'meteoswiss_icon_seamless',
+		104: 'ncep_nam_conus',
+		105: 'icon_d2_ruc',
+		106: 'ecmwf_seas5',
+		107: 'ecmwf_ec46',
+		108: 'ecmwf_seasonal_seamless',
+		109: 'ecmwf_ifs_seamless',
+		110: 'jma_jaxa_mtg_fci',
+		111: 'gem_hrdps_west'
+	};
+	return modelMap[modelEnum] ?? `model_${modelEnum}`;
+}

src/lib/stores/settings.ts

@@ -1,24 +1,24 @@
 import { persisted } from 'svelte-persisted-store';
 
 export interface GeoLocation {
-	id?: number;
+	id: number;
-	name?: string;
+	name: string;
-	latitude?: number;
+	latitude: number;
-	longitude?: number;
+	longitude: number;
-	elevation?: number;
+	elevation: number;
-	feature_code?: string;
+	feature_code: string;
-	country_code?: string;
+	country_code: string | undefined;
-	admin1_id?: number;
+	admin1_id: number | undefined;
-	admin3_id?: number;
+	admin3_id?: number | undefined;
-	admin4_id?: number;
+	admin4_id?: number | undefined;
-	timezone?: string;
+	timezone: string;
-	population?: number;
+	population: number | undefined;
-	postcodes?: string[];
+	postcodes: string[] | undefined;
-	country_id?: number;
+	country_id: number | undefined;
-	country?: string;
+	country: string | undefined;
-	admin1?: string;
+	admin1: string | undefined;
-	admin3?: string;
+	admin3?: string | undefined;
-	admin4?: string;
+	admin4?: string | undefined;
 }
 
 export const defaultLocation: GeoLocation = {

src/lib/types.ts

@@ -1,30 +0,0 @@
-export interface Parameters {
-	latitude?: number | number[];
-	longitude?: number | number[];
-	hourly?: string[];
-	models?: string[];
-	daily?: string[];
-	current?: string[];
-	minutely_15?: string[];
-	timezone?: string;
-	location_mode?: string;
-	csv_coordinates?: string;
-	time_mode?: string;
-	past_days?: string;
-	forecast_days?: string;
-	end_date?: string;
-	start_date?: string;
-	past_hours?: string;
-	cell_selection?: string;
-	forecast_hours?: string;
-	past_minutely_15?: string;
-	temporal_resolution?: string;
-	forecast_minutely_15?: string;
-	tilt?: string;
-	azimuth?: string;
-	timeformat?: string;
-	wind_speed_unit?: string;
-	temperature_unit?: string;
-	precipitation_unit?: string;
-	[key: string]: any;
-}

src/lib/utils/date.ts

@@ -0,0 +1,61 @@
+import { formatInTimeZone, toZonedTime } from 'date-fns-tz';
+import { isSameDay as isSameDayDateFns } from 'date-fns';
+
+/**
+ * Formats a UTC Date into a string for a specific timezone using date-fns patterns.
+ * Patterns: 'HH:mm' for 24h time, 'EEE' for short weekday, etc.
+ */
+export function formatZoned(date: Date, timeZone: string, pattern: string): string {
+	return formatInTimeZone(date, timeZone, pattern);
+}
+
+/**
+ * Checks if two dates are the same day in a specific timezone.
+ * Important for comparing weather forecast days against a selected date.
+ */
+export function isSameDayInZone(date1: Date, date2: Date, timeZone: string): boolean {
+	const z1 = toZonedTime(date1, timeZone);
+	const z2 = toZonedTime(date2, timeZone);
+	return isSameDayDateFns(z1, z2);
+}
+
+/**
+ * Gets the numeric hour (0-23) for a date in a specific timezone.
+ */
+export function getZonedHour(date: Date, timeZone: string): number {
+	return parseInt(formatInTimeZone(date, timeZone, 'H'), 10);
+}
+
+/**
+ * Returns a relative label like "Today", "Tomorrow", "Yesterday",
+ * or a formatted date string, all relative to the target timezone.
+ */
+export function getRelativeDayLabel(date: Date, timeZone: string): string {
+	const now = new Date();
+	const zonedDate = toZonedTime(date, timeZone);
+	const zonedNow = toZonedTime(now, timeZone);
+
+	if (isSameDayDateFns(zonedDate, zonedNow)) return 'Today';
+
+	const tomorrow = new Date(zonedNow);
+	tomorrow.setDate(tomorrow.getDate() + 1);
+	if (isSameDayDateFns(zonedDate, tomorrow)) return 'Tomorrow';
+
+	const yesterday = new Date(zonedNow);
+	yesterday.setDate(yesterday.getDate() - 1);
+	if (isSameDayDateFns(zonedDate, yesterday)) return 'Yesterday';
+
+	return formatInTimeZone(date, timeZone, 'EEE d MMM');
+}
+
+/**
+ * Formats a UTC offset in seconds to a string like "UTC+1" or "UTC-05:00"
+ */
+export function formatUtcOffset(offsetSeconds: number): string {
+	const sign = offsetSeconds >= 0 ? '+' : '-';
+	const abs = Math.abs(offsetSeconds);
+	const hours = Math.floor(abs / 3600);
+	const minutes = Math.floor((abs % 3600) / 60);
+	const pad = (n: number) => n.toString().padStart(2, '0');
+	return minutes === 0 ? `UTC${sign}${hours}` : `UTC${sign}${hours}:${pad(minutes)}`;
+}

src/lib/utils/echarts/download.ts

@@ -0,0 +1,321 @@
+/**
+ * ECharts Download Utilities
+ *
+ * Provides programmatic chart export functionality for downloading
+ * charts as PNG or SVG images. Supports stitching multiple chart
+ * instances into a single combined meteogram image.
+ */
+import type * as echarts from 'echarts';
+
+// ─── Types ───────────────────────────────────────────────────────────────────
+
+export type ExportFormat = 'png' | 'svg';
+
+export interface DownloadOptions {
+	/** The file name (without extension) */
+	fileName?: string;
+	/** Export format: 'png' or 'svg' */
+	format?: ExportFormat;
+	/** Pixel ratio for PNG exports (default: 2 for retina quality) */
+	pixelRatio?: number;
+	/** Background color (default: '#ffffff' for PNG, 'none' for SVG) */
+	backgroundColor?: string;
+	/** Components to exclude from the export (e.g. ['toolbox']) */
+	excludeComponents?: string[];
+}
+
+// ─── Defaults ────────────────────────────────────────────────────────────────
+
+const DEFAULT_FILE_NAME = 'open-meteo-chart';
+const DEFAULT_PIXEL_RATIO = 2;
+
+// ─── Download Functions ──────────────────────────────────────────────────────
+
+/**
+ * Downloads a single ECharts instance as an image file.
+ *
+ * @param chart  - The ECharts instance to export
+ * @param options - Download configuration options
+ */
+export function downloadChart(chart: echarts.ECharts, options: DownloadOptions = {}): void {
+	const {
+		fileName = DEFAULT_FILE_NAME,
+		format = 'png',
+		pixelRatio = DEFAULT_PIXEL_RATIO,
+		backgroundColor,
+		excludeComponents = ['toolbox']
+	} = options;
+
+	const resolvedBg = backgroundColor ?? (format === 'svg' ? 'none' : '#ffffff');
+
+	const dataUrl = chart.getDataURL({
+		type: format === 'svg' ? 'svg' : 'png',
+		pixelRatio: format === 'png' ? pixelRatio : 1,
+		backgroundColor: resolvedBg,
+		excludeComponents
+	});
+
+	triggerDownload(dataUrl, `${fileName}.${format}`);
+}
+
+/**
+ * Downloads multiple ECharts instances stitched into a single combined
+ * meteogram image. Charts are stacked vertically in the order provided.
+ *
+ * For a single chart, delegates to `downloadChart`.
+ *
+ * @param charts  - Array of ECharts instances to combine
+ * @param options - Download configuration options
+ */
+export function downloadMeteogram(charts: echarts.ECharts[], options: DownloadOptions = {}): void {
+	const validCharts = charts.filter((c) => c && !c.isDisposed());
+	if (validCharts.length === 0) return;
+
+	if (validCharts.length === 1) {
+		downloadChart(validCharts[0], options);
+		return;
+	}
+
+	const {
+		fileName = DEFAULT_FILE_NAME,
+		format = 'png',
+		pixelRatio = DEFAULT_PIXEL_RATIO,
+		backgroundColor,
+		excludeComponents = ['toolbox']
+	} = options;
+
+	const resolvedBg = backgroundColor ?? (format === 'svg' ? 'none' : '#ffffff');
+
+	if (format === 'svg') {
+		downloadMeteogramSvg(validCharts, {
+			fileName,
+			backgroundColor: resolvedBg,
+			excludeComponents
+		});
+		return;
+	}
+
+	downloadMeteogramPng(validCharts, {
+		fileName,
+		pixelRatio,
+		backgroundColor: resolvedBg,
+		excludeComponents
+	});
+}
+
+/**
+ * Returns the data URL of a chart without triggering a download.
+ * Useful for previewing or embedding chart images programmatically.
+ *
+ * @param chart   - The ECharts instance to export
+ * @param options - Export configuration options
+ * @returns A base64-encoded data URL string
+ */
+export function getChartDataUrl(chart: echarts.ECharts, options: DownloadOptions = {}): string {
+	const {
+		format = 'png',
+		pixelRatio = DEFAULT_PIXEL_RATIO,
+		backgroundColor,
+		excludeComponents = ['toolbox']
+	} = options;
+
+	const resolvedBg = backgroundColor ?? (format === 'svg' ? 'none' : '#ffffff');
+
+	return chart.getDataURL({
+		type: format === 'svg' ? 'svg' : 'png',
+		pixelRatio: format === 'png' ? pixelRatio : 1,
+		backgroundColor: resolvedBg,
+		excludeComponents
+	});
+}
+
+// ─── Internal: PNG Meteogram ─────────────────────────────────────────────────
+
+interface PngStitchOptions {
+	fileName: string;
+	pixelRatio: number;
+	backgroundColor: string;
+	excludeComponents: string[];
+}
+
+/**
+ * Stitches multiple charts into a single PNG by rendering each chart's
+ * data URL onto an off-screen canvas, stacked vertically.
+ */
+function downloadMeteogramPng(charts: echarts.ECharts[], opts: PngStitchOptions): void {
+	const { fileName, pixelRatio, backgroundColor, excludeComponents } = opts;
+
+	const dataUrls = charts.map((chart) =>
+		chart.getDataURL({
+			type: 'png',
+			pixelRatio,
+			backgroundColor: 'transparent',
+			excludeComponents
+		})
+	);
+
+	const images: HTMLImageElement[] = [];
+	let loadedCount = 0;
+
+	dataUrls.forEach((url, index) => {
+		const img = new Image();
+		images[index] = img;
+
+		img.onload = () => {
+			loadedCount++;
+			if (loadedCount === dataUrls.length) {
+				composePngAndDownload(images, fileName, backgroundColor);
+			}
+		};
+
+		img.onerror = () => {
+			loadedCount++;
+			if (loadedCount === dataUrls.length) {
+				composePngAndDownload(images, fileName, backgroundColor);
+			}
+		};
+
+		img.src = url;
+	});
+}
+
+function composePngAndDownload(
+	images: HTMLImageElement[],
+	fileName: string,
+	backgroundColor: string
+): void {
+	const validImages = images.filter((img) => img.naturalWidth > 0);
+	if (validImages.length === 0) return;
+
+	const maxWidth = Math.max(...validImages.map((img) => img.naturalWidth));
+	const totalHeight = validImages.reduce((sum, img) => sum + img.naturalHeight, 0);
+
+	const canvas = document.createElement('canvas');
+	canvas.width = maxWidth;
+	canvas.height = totalHeight;
+
+	const ctx = canvas.getContext('2d');
+	if (!ctx) return;
+
+	if (backgroundColor && backgroundColor !== 'transparent' && backgroundColor !== 'none') {
+		ctx.fillStyle = backgroundColor;
+		ctx.fillRect(0, 0, maxWidth, totalHeight);
+	}
+
+	let y = 0;
+	for (const img of validImages) {
+		ctx.drawImage(img, 0, y);
+		y += img.naturalHeight;
+	}
+
+	const dataUrl = canvas.toDataURL('image/png');
+	triggerDownload(dataUrl, `${fileName}.png`);
+}
+
+// ─── Internal: SVG Meteogram ─────────────────────────────────────────────────
+
+interface SvgStitchOptions {
+	fileName: string;
+	backgroundColor: string;
+	excludeComponents: string[];
+}
+
+/**
+ * Stitches multiple charts into a single SVG by extracting each chart's
+ * SVG markup and embedding them as nested groups with vertical offsets.
+ */
+function downloadMeteogramSvg(charts: echarts.ECharts[], opts: SvgStitchOptions): void {
+	const { fileName, backgroundColor, excludeComponents } = opts;
+
+	const svgStrings = charts.map((chart) =>
+		chart.getDataURL({
+			type: 'svg',
+			pixelRatio: 1,
+			backgroundColor: 'transparent',
+			excludeComponents
+		})
+	);
+
+	const parser = new DOMParser();
+	const fragments: { svg: SVGSVGElement; width: number; height: number }[] = [];
+
+	for (const svgDataUrl of svgStrings) {
+		const svgContent = decodeSvgDataUrl(svgDataUrl);
+		if (!svgContent) continue;
+
+		const doc = parser.parseFromString(svgContent, 'image/svg+xml');
+		const svg = doc.querySelector('svg');
+		if (!svg) continue;
+
+		const width = parseFloat(svg.getAttribute('width') || '0');
+		const height = parseFloat(svg.getAttribute('height') || '0');
+
+		if (width > 0 && height > 0) {
+			fragments.push({ svg, width, height });
+		}
+	}
+
+	if (fragments.length === 0) return;
+
+	const maxWidth = Math.max(...fragments.map((f) => f.width));
+	const totalHeight = fragments.reduce((sum, f) => sum + f.height, 0);
+
+	let combinedSvg = `<svg xmlns="http://www.w3.org/2000/svg" width="${maxWidth}" height="${totalHeight}" viewBox="0 0 ${maxWidth} ${totalHeight}">`;
+
+	if (backgroundColor && backgroundColor !== 'none' && backgroundColor !== 'transparent') {
+		combinedSvg += `<rect width="${maxWidth}" height="${totalHeight}" fill="${backgroundColor}"/>`;
+	}
+
+	let yOffset = 0;
+	for (const fragment of fragments) {
+		combinedSvg += `<g transform="translate(0,${yOffset})">`;
+		combinedSvg += fragment.svg.innerHTML;
+		combinedSvg += `</g>`;
+		yOffset += fragment.height;
+	}
+
+	combinedSvg += `</svg>`;
+
+	const blob = new Blob([combinedSvg], { type: 'image/svg+xml;charset=utf-8' });
+	const url = URL.createObjectURL(blob);
+	triggerDownload(url, `${fileName}.svg`);
+
+	setTimeout(() => URL.revokeObjectURL(url), 10000);
+}
+
+function decodeSvgDataUrl(dataUrl: string): string | null {
+	try {
+		if (dataUrl.startsWith('data:image/svg+xml;charset=UTF-8,')) {
+			return decodeURIComponent(dataUrl.slice('data:image/svg+xml;charset=UTF-8,'.length));
+		}
+		if (dataUrl.startsWith('data:image/svg+xml;base64,')) {
+			return atob(dataUrl.slice('data:image/svg+xml;base64,'.length));
+		}
+		if (dataUrl.startsWith('data:image/svg+xml,')) {
+			return decodeURIComponent(dataUrl.slice('data:image/svg+xml,'.length));
+		}
+		return null;
+	} catch {
+		return null;
+	}
+}
+
+// ─── Internal Helpers ────────────────────────────────────────────────────────
+
+/**
+ * Triggers a browser file download from a data URL or object URL.
+ * Creates a temporary anchor element, clicks it, and removes it.
+ */
+function triggerDownload(url: string, fileName: string): void {
+	const link = document.createElement('a');
+	link.href = url;
+	link.download = fileName;
+	link.style.display = 'none';
+
+	document.body.appendChild(link);
+	link.click();
+
+	requestAnimationFrame(() => {
+		document.body.removeChild(link);
+	});
+}

src/lib/utils/echarts/index.ts

@@ -0,0 +1,71 @@
+/**
+ * ECharts Utilities — Barrel Export
+ *
+ * Re-exports all ECharts-related utilities from a single entry point.
+ *
+ * Usage:
+ *   import { getThemeColors, composeChartOption, buildModelSeries, downloadChart } from '$lib/utils/echarts';
+ */
+
+// Theme: dark/light detection, color palettes, theme color accessors
+export {
+	SERIES_COLORS,
+	CHART_COLORS,
+	isDarkMode,
+	getThemeColors,
+	getTextColor,
+	getAxisLineColor,
+	getSplitLineColor
+} from './theme';
+export type { ThemeColors } from './theme';
+
+// Option builders: grid, title, tooltip, legend, axes, toolbox, full composer
+export {
+	buildGrid,
+	buildTitle,
+	buildTooltip,
+	buildLegend,
+	buildTimeXAxis,
+	buildValueYAxis,
+	buildCreditGraphic,
+	buildToolbox,
+	composeChartOption,
+	isColumnUnit
+} from './options';
+export type {
+	GridOptions,
+	TitleOptions,
+	LegendOptions,
+	TooltipOptions,
+	AxisOptions,
+	CreditOptions,
+	BuildGridParams,
+	ToolboxOptions,
+	ChartOptionParams
+} from './options';
+
+// Series builders: model lines, averages, time markers, daylight bands, ensemble spread
+export {
+	buildModelSeries,
+	buildAverageSeries,
+	buildCurrentTimeSeries,
+	buildDaylightMarkAreas,
+	buildDaylightSeries,
+	buildSpreadSeries,
+	calculateAverage,
+	calculateSpread,
+	findUnit
+} from './series';
+export type {
+	ModelSeriesParams,
+	AverageSeriesParams,
+	CurrentTimeSeriesParams,
+	DaylightSeriesParams,
+	SpreadSeriesParams,
+	AverageResult,
+	SpreadResult
+} from './series';
+
+// Download: export charts as PNG or SVG
+export { downloadChart, downloadMeteogram, getChartDataUrl } from './download';
+export type { ExportFormat, DownloadOptions } from './download';

src/lib/utils/echarts/options.ts

@@ -0,0 +1,435 @@
+/**
+ * ECharts Option Builders
+ *
+ * Shared factory functions for constructing common ECharts option fragments.
+ * These builders ensure visual consistency across all chart pages and reduce
+ * boilerplate in page-level components.
+ */
+import { formatZoned } from '../date';
+import { getThemeColors } from './theme';
+
+import type { ThemeColors } from './theme';
+
+// ─── Types ───────────────────────────────────────────────────────────────────
+
+export interface GridOptions {
+	left?: number;
+	right?: number;
+	top?: number;
+	bottom?: number;
+}
+
+export interface TitleOptions {
+	text: string;
+	subtext?: string;
+}
+
+export interface LegendOptions {
+	show: boolean;
+	data?: string[];
+}
+
+export interface TooltipOptions {
+	unit: string;
+	timezone?: string;
+}
+
+export interface AxisOptions {
+	unit?: string;
+}
+
+export interface CreditOptions {
+	show: boolean;
+}
+
+// ─── Default Constants ───────────────────────────────────────────────────────
+
+const DEFAULT_GRID: GridOptions = {
+	left: 60,
+	right: 16,
+	top: 40,
+	bottom: 40
+};
+
+const GRID_WITH_TITLE: Partial<GridOptions> = {
+	top: 80
+};
+
+const GRID_WITH_LEGEND: Partial<GridOptions> = {
+	bottom: 60
+};
+
+// ─── Grid ────────────────────────────────────────────────────────────────────
+
+export interface BuildGridParams {
+	hasTitle?: boolean;
+	hasSubtitle?: boolean;
+	showLegend?: boolean;
+	overrides?: Partial<GridOptions>;
+}
+
+/**
+ * Builds a grid configuration with sensible defaults.
+ * Automatically adjusts top/bottom spacing for title and legend presence.
+ */
+export function buildGrid(params: BuildGridParams = {}): GridOptions {
+	const { hasTitle = false, hasSubtitle = false, showLegend = false, overrides } = params;
+
+	return {
+		...DEFAULT_GRID,
+		...(hasTitle ? GRID_WITH_TITLE : {}),
+		...(hasSubtitle ? { top: 90 } : {}),
+		...(showLegend ? GRID_WITH_LEGEND : {}),
+		...overrides
+	};
+}
+
+// ─── Title ───────────────────────────────────────────────────────────────────
+
+/**
+ * Builds a title configuration. Pass `null` to hide the title.
+ */
+export function buildTitle(
+	options: TitleOptions | null,
+	colors?: ThemeColors
+): Record<string, unknown> {
+	const c = colors ?? getThemeColors();
+
+	if (!options) {
+		return { title: { show: false } };
+	}
+
+	const result: Record<string, unknown> = {
+		text: options.text,
+		left: 'left',
+		textStyle: {
+			fontWeight: 'normal',
+			fontSize: 16,
+			color: c.text
+		}
+	};
+
+	if (options.subtext) {
+		result.subtext = options.subtext;
+		result.subtextStyle = {
+			fontWeight: 'normal',
+			fontSize: 12,
+			color: c.textMuted
+		};
+	}
+
+	return result;
+}
+
+// ─── Tooltip ─────────────────────────────────────────────────────────────────
+
+/**
+ * Builds a tooltip with cross-axis pointer and unit-aware value formatting.
+ */
+export function buildTooltip(
+	options: TooltipOptions,
+	colors?: ThemeColors
+): Record<string, unknown> {
+	const c = colors ?? getThemeColors();
+	const { unit, timezone } = options;
+
+	return {
+		trigger: 'axis',
+		axisPointer: {
+			type: 'cross',
+			animation: false,
+			label: {
+				backgroundColor: c.tooltipBg,
+				color: c.text,
+				borderColor: c.tooltipBorder,
+				borderWidth: 1,
+				formatter: timezone
+					? (params: { axisDimension: string; value: number }) => {
+							if (params.axisDimension === 'x') {
+								return formatZoned(new Date(params.value), timezone, 'EEE d MMM HH:mm');
+							}
+							return params.value.toFixed(1);
+						}
+					: undefined
+			}
+		},
+		backgroundColor: c.tooltipBg,
+		borderColor: c.tooltipBorder,
+		textStyle: {
+			color: c.text
+		},
+		formatter: timezone
+			? (
+					params: Array<{
+						axisValue: number;
+						seriesName: string;
+						marker: string;
+						value: number | number[] | null;
+					}>
+				) => {
+					if (!params || params.length === 0) return '';
+					const date = new Date(params[0].axisValue);
+					let html = `<b>${formatZoned(date, timezone, 'EEE d MMM HH:mm')}</b><br/>`;
+					params.forEach((item) => {
+						if (item.seriesName === 'Daylight' || item.seriesName === 'Current Time') return;
+						const val = Array.isArray(item.value) ? item.value[1] : item.value;
+						if (val === null || val === undefined) return;
+						html += `${item.marker} ${item.seriesName}: <b>${val.toFixed(1)} ${unit}</b><br/>`;
+					});
+					return html;
+				}
+			: undefined,
+		valueFormatter: (value: number) => {
+			if (value === null || value === undefined) return '-';
+			return value.toFixed(1) + ' ' + unit;
+		}
+	};
+}
+
+// ─── Legend ───────────────────────────────────────────────────────────────────
+
+/**
+ * Builds a scrollable legend configuration pinned to the bottom.
+ */
+export function buildLegend(options: LegendOptions, colors?: ThemeColors): Record<string, unknown> {
+	const c = colors ?? getThemeColors();
+
+	return {
+		show: options.show,
+		bottom: 0,
+		type: 'scroll',
+		...(options.data ? { data: options.data } : {}),
+		textStyle: {
+			color: c.text
+		},
+		pageTextStyle: {
+			color: c.text
+		}
+	};
+}
+
+// ─── X Axis (Time) ───────────────────────────────────────────────────────────
+
+/**
+ * Builds a time-based X axis with theme-aware styling and timezone-aware labels.
+ */
+export function buildTimeXAxis(timezone?: string, colors?: ThemeColors): Record<string, unknown> {
+	const c = colors ?? getThemeColors();
+
+	return {
+		type: 'time',
+		splitLine: {
+			show: false
+		},
+		axisLine: {
+			lineStyle: {
+				color: c.axisLine
+			}
+		},
+		axisPointer: {
+			label: {
+				formatter: timezone
+					? (params: { value: number }) =>
+							formatZoned(new Date(params.value), timezone, 'EEE d MMM HH:mm')
+					: undefined
+			}
+		},
+		axisLabel: {
+			color: c.text,
+			hideOverlap: true,
+			formatter: timezone
+				? (value: number) => formatZoned(new Date(value), timezone, 'HH:mm')
+				: undefined
+		},
+		axisTick: {
+			lineStyle: {
+				color: c.axisLine
+			}
+		}
+	};
+}
+
+// ─── Y Axis (Value) ─────────────────────────────────────────────────────────
+
+/**
+ * Builds a value-based Y axis with optional unit label.
+ */
+export function buildValueYAxis(
+	options: AxisOptions = {},
+	colors?: ThemeColors
+): Record<string, unknown> {
+	const c = colors ?? getThemeColors();
+
+	return {
+		type: 'value',
+		...(options.unit ? { name: options.unit } : {}),
+		nameTextStyle: {
+			color: c.text,
+			padding: [0, 0, 0, 4]
+		},
+		axisLine: {
+			show: false
+		},
+		axisLabel: {
+			color: c.text
+		},
+		splitLine: {
+			lineStyle: {
+				color: c.splitLine
+			}
+		}
+	};
+}
+
+// ─── Credit Watermark ────────────────────────────────────────────────────────
+
+/**
+ * Builds the Open-Meteo.com credit watermark graphic element.
+ */
+export function buildCreditGraphic(colors?: ThemeColors): Record<string, unknown>[] {
+	const c = colors ?? getThemeColors();
+
+	return [
+		{
+			type: 'text',
+			right: 10,
+			bottom: 5,
+			style: {
+				text: 'Open-Meteo.com',
+				fontSize: 10,
+				fill: c.text,
+				opacity: 0.4
+			},
+			onclick: function () {
+				window.open('https://open-meteo.com', '_blank');
+			},
+			cursor: 'pointer'
+		}
+	];
+}
+
+// ─── Toolbox (Download) ─────────────────────────────────────────────────────
+
+export interface ToolboxOptions {
+	/** Show the save-as-image button */
+	saveAsImage?: boolean;
+	/** File name prefix for downloaded images */
+	fileName?: string;
+	/** Export format: 'png' or 'svg' */
+	format?: 'png' | 'svg';
+}
+
+/**
+ * Builds the ECharts toolbox with download functionality.
+ */
+export function buildToolbox(
+	options: ToolboxOptions = {},
+	colors?: ThemeColors
+): Record<string, unknown> {
+	const c = colors ?? getThemeColors();
+	const { saveAsImage = true, fileName = 'open-meteo-chart', format = 'png' } = options;
+
+	return {
+		show: true,
+		right: 16,
+		top: 4,
+		iconStyle: {
+			borderColor: c.textMuted
+		},
+		emphasis: {
+			iconStyle: {
+				borderColor: c.text
+			}
+		},
+		feature: {
+			...(saveAsImage
+				? {
+						saveAsImage: {
+							type: format,
+							name: fileName,
+							title: format === 'svg' ? 'Save as SVG' : 'Save as PNG',
+							pixelRatio: 2,
+							backgroundColor: 'transparent',
+							excludeComponents: ['toolbox'],
+							iconStyle: {
+								borderColor: c.textMuted
+							},
+							emphasis: {
+								iconStyle: {
+									borderColor: c.text
+								}
+							}
+						}
+					}
+				: {})
+		}
+	};
+}
+
+// ─── Full Option Composer ────────────────────────────────────────────────────
+
+export interface ChartOptionParams {
+	title?: TitleOptions | null;
+	tooltip: TooltipOptions;
+	legend?: LegendOptions;
+	grid?: BuildGridParams;
+	yAxis?: AxisOptions;
+	series: Array<Record<string, unknown>>;
+	toolbox?: ToolboxOptions | false;
+	showCredit?: boolean;
+	colors?: ThemeColors;
+	timezone?: string;
+}
+
+/**
+ * Composes a complete ECharts option object from individual builder params.
+ * This is the primary entry point for building chart options — it calls all
+ * the individual builders and merges the results into a single config object.
+ */
+export function composeChartOption(params: ChartOptionParams): Record<string, unknown> {
+	const colors = params.colors ?? getThemeColors();
+	const hasTitle = params.title != null && params.title.text !== '';
+	const showLegend = params.legend?.show ?? false;
+
+	const option: Record<string, unknown> = {
+		title: buildTitle(params.title ?? null, colors),
+		tooltip: buildTooltip(params.tooltip, colors),
+		legend: buildLegend(params.legend ?? { show: false }, colors),
+		grid: buildGrid({
+			...params.grid,
+			hasTitle,
+			hasSubtitle: hasTitle && !!params.title?.subtext,
+			showLegend
+		}),
+		xAxis: buildTimeXAxis(params.timezone, colors),
+		yAxis: buildValueYAxis(params.yAxis, colors),
+		series: params.series,
+		textStyle: {
+			color: colors.text
+		}
+	};
+
+	// Add toolbox unless explicitly disabled
+	if (params.toolbox !== false) {
+		option.toolbox = buildToolbox(params.toolbox ?? {}, colors);
+	}
+
+	// Add credit watermark
+	if (params.showCredit) {
+		option.graphic = buildCreditGraphic(colors);
+	}
+
+	return option;
+}
+
+// ─── Utility: Detect column-type variables ───────────────────────────────────
+
+/** Units that should be rendered as bar/column charts instead of lines. */
+const COLUMN_UNITS = new Set(['mm', 'cm', 'inch', 'MJ/m²']);
+
+/**
+ * Returns true if the given unit should be rendered as a bar chart.
+ */
+export function isColumnUnit(unit: string): boolean {
+	return COLUMN_UNITS.has(unit);
+}

src/lib/utils/echarts/series.ts

@@ -0,0 +1,349 @@
+/**
+ * ECharts Series Builders
+ *
+ * Factory functions for constructing common series patterns used across
+ * weather chart visualizations. These builders encapsulate the styling
+ * and configuration details so page-level code only needs to provide data.
+ */
+import { isColumnUnit } from './options';
+import { CHART_COLORS } from './theme';
+
+// ─── Types ───────────────────────────────────────────────────────────────────
+
+export interface ModelSeriesParams {
+	/** The series name (typically the model key from the API response) */
+	name: string;
+	/** Array of [timestamp, value] data points */
+	data: Array<[number, number | null]>;
+	/** The unit string, used to determine bar vs line rendering */
+	unit: string;
+	/** Optional line width override (default: 2) */
+	lineWidth?: number;
+}
+
+export interface AverageSeriesParams {
+	/** The variable name, used to construct the series name */
+	variable: string;
+	/** Array of [timestamp, value] data points */
+	data: Array<[number, number]>;
+	/** The unit string, used to determine bar vs line rendering */
+	unit: string;
+}
+
+export interface CurrentTimeSeriesParams {
+	/** UTC offset in seconds from the API response */
+	utcOffsetSeconds: number;
+}
+
+export interface DaylightSeriesParams {
+	/** Array of mark area pairs: [[start, end], [start, end], ...] */
+	markAreas: Array<[{ xAxis: number; itemStyle: { color: string } }, { xAxis: number }]>;
+}
+
+export interface SpreadSeriesParams {
+	/** The variable name, used to construct series names */
+	variable: string;
+	/** Array of [timestamp, min, max] data points */
+	spreadData: Array<[number, number, number]>;
+	/** Optional color for the spread area (default: theme spread color) */
+	color?: string;
+}
+
+export interface MarkAreaEntry {
+	xAxis: number;
+	itemStyle?: { color: string };
+}
+
+// ─── Model Series ────────────────────────────────────────────────────────────
+
+/**
+ * Builds a single model series (line or bar depending on the unit).
+ * Used on the Model Comparison page where each weather model gets its own series.
+ */
+export function buildModelSeries(params: ModelSeriesParams): Record<string, unknown> {
+	const { name, data, unit, lineWidth = 2 } = params;
+	const isColumn = isColumnUnit(unit);
+
+	return {
+		name,
+		type: isColumn ? 'bar' : 'line',
+		data,
+		smooth: !isColumn,
+		showSymbol: false,
+		lineStyle: {
+			width: lineWidth
+		},
+		emphasis: {
+			lineStyle: {
+				width: lineWidth + 1
+			}
+		},
+		barMaxWidth: 5
+	};
+}
+
+// ─── Average Series ──────────────────────────────────────────────────────────
+
+/**
+ * Builds the ensemble/model average series.
+ * Rendered as a dashed line (or bar) that stands out from individual model lines.
+ */
+export function buildAverageSeries(params: AverageSeriesParams): Record<string, unknown> {
+	const { variable, data, unit } = params;
+	const isColumn = isColumnUnit(unit);
+
+	return {
+		name: variable + '_average',
+		type: isColumn ? 'bar' : 'line',
+		data,
+		smooth: !isColumn,
+		showSymbol: false,
+		lineStyle: {
+			type: 'dashed',
+			width: 4,
+			color: CHART_COLORS.average
+		},
+		itemStyle: {
+			color: CHART_COLORS.average
+		},
+		emphasis: {
+			lineStyle: {
+				width: 6
+			}
+		},
+		barMaxWidth: 5,
+		z: 10
+	};
+}
+
+// ─── Current Time Marker ─────────────────────────────────────────────────────
+
+/**
+ * Builds a helper series that renders a vertical red line at the current time.
+ * Uses an empty data series with a markLine to overlay onto the chart.
+ */
+export function buildCurrentTimeSeries(): Record<string, unknown> {
+	return {
+		name: 'Current Time',
+		type: 'line',
+		data: [],
+		markLine: {
+			silent: true,
+			symbol: 'none',
+			data: [
+				{
+					xAxis: Date.now(),
+					lineStyle: {
+						color: CHART_COLORS.currentTimeLine,
+						width: 2,
+						type: 'solid'
+					},
+					label: {
+						show: false
+					}
+				}
+			]
+		}
+	};
+}
+
+// ─── Daylight Bands ──────────────────────────────────────────────────────────
+
+/**
+ * Builds mark area entries from sunrise/sunset arrays.
+ * Each entry is a pair of axis markers that ECharts renders as a shaded band.
+ *
+ * @param sunrise - Array of sunrise timestamps (unix seconds, without UTC offset)
+ * @param sunset  - Array of sunset timestamps (unix seconds, without UTC offset)
+ * @param utcOffsetSeconds - UTC offset to apply (from the API response)
+ */
+export function buildDaylightMarkAreas(
+	sunrise: number[],
+	sunset: number[]
+): Array<[{ xAxis: number; itemStyle: { color: string } }, { xAxis: number }]> {
+	return sunrise.map((r: number, i: number) => [
+		{
+			xAxis: r * 1000,
+			itemStyle: {
+				color: CHART_COLORS.daylight
+			}
+		},
+		{
+			xAxis: sunset[i] * 1000
+		}
+	]);
+}
+
+/**
+ * Builds a helper series that renders day/night shading bands via markArea.
+ * Returns null if no mark areas are provided (so callers can filter it out).
+ */
+export function buildDaylightSeries(params: DaylightSeriesParams): Record<string, unknown> | null {
+	if (params.markAreas.length === 0) return null;
+
+	return {
+		name: 'Daylight',
+		type: 'line',
+		data: [],
+		markArea: {
+			silent: true,
+			data: params.markAreas
+		}
+	};
+}
+
+// ─── Ensemble Spread (Min/Max Area) ──────────────────────────────────────────
+
+/**
+ * Builds a pair of stacked area series that visualize the ensemble spread
+ * (min-to-max range). The lower bound is rendered invisibly and the upper
+ * bound delta is stacked on top with a translucent fill.
+ *
+ * Returns an array of two series that should be spread into the series list.
+ */
+export function buildSpreadSeries(params: SpreadSeriesParams): Array<Record<string, unknown>> {
+	const { variable, spreadData, color = CHART_COLORS.spreadArea } = params;
+
+	const lowerBound: Record<string, unknown> = {
+		name: variable + '_spread_lower',
+		type: 'line',
+		data: spreadData.map((d) => [d[0], d[1]]),
+		areaStyle: {
+			color,
+			origin: 'auto'
+		},
+		lineStyle: {
+			width: 0
+		},
+		showSymbol: false,
+		stack: 'spread_' + variable,
+		smooth: true,
+		z: 1,
+		silent: true
+	};
+
+	const upperDelta: Record<string, unknown> = {
+		name: variable + '_spread_upper',
+		type: 'line',
+		data: spreadData.map((d) => [d[0], d[2] - d[1]]),
+		areaStyle: {
+			color,
+			origin: 'auto'
+		},
+		lineStyle: {
+			width: 0
+		},
+		showSymbol: false,
+		stack: 'spread_' + variable,
+		smooth: true,
+		z: 1,
+		silent: true
+	};
+
+	return [lowerBound, upperDelta];
+}
+
+// ─── Data Processing Helpers ─────────────────────────────────────────────────
+
+export interface AverageResult {
+	average: number[];
+	averageCount: number[];
+}
+
+export interface SpreadResult {
+	minValues: (number | undefined)[];
+	maxValues: (number | undefined)[];
+}
+
+/**
+ * Calculates per-timestep average and count from hourly model data.
+ * Shared between the Model Compare and 14-Day Forecast pages.
+ *
+ * @param hourlyData   - The `data.hourly` object from the API response
+ * @param variable     - The variable prefix to filter on (e.g. 'temperature_2m')
+ * @param timeLength   - Number of timesteps
+ * @returns Object containing running average and count arrays
+ */
+export function calculateAverage(
+	hourlyData: Record<string, unknown>,
+	variable: string,
+	timeLength: number
+): AverageResult {
+	const average = new Array<number>(timeLength).fill(0);
+	const averageCount = new Array<number>(timeLength).fill(0);
+
+	for (const [model, values] of Object.entries(hourlyData)) {
+		if (model === 'time') continue;
+		if (!model.startsWith(variable)) continue;
+
+		for (const [index, val] of (values as number[]).entries()) {
+			if (val !== null && val !== undefined && isFinite(val)) {
+				average[index] += val;
+				averageCount[index]++;
+			}
+		}
+	}
+
+	// Finalize average values
+	for (let i = 0; i < timeLength; i++) {
+		if (averageCount[i] > 0) {
+			average[i] = Math.round((average[i] / averageCount[i]) * 10) / 10;
+		}
+	}
+
+	return { average, averageCount };
+}
+
+/**
+ * Calculates per-timestep min and max values from hourly ensemble data.
+ * Used by the 14-Day Forecast page to render the ensemble spread.
+ *
+ * @param hourlyData   - The `data.hourly` object from the API response
+ * @param variable     - The variable prefix to filter on
+ * @param timeLength   - Number of timesteps
+ * @returns Object containing min and max value arrays
+ */
+export function calculateSpread(
+	hourlyData: Record<string, unknown>,
+	variable: string,
+	timeLength: number
+): SpreadResult {
+	const minValues = new Array<number | undefined>(timeLength).fill(undefined);
+	const maxValues = new Array<number | undefined>(timeLength).fill(undefined);
+
+	for (const [model, values] of Object.entries(hourlyData)) {
+		if (model === 'time') continue;
+		if (!model.startsWith(variable)) continue;
+
+		for (const [index, val] of (values as number[]).entries()) {
+			if (val !== null && val !== undefined) {
+				if (minValues[index] === undefined || val < minValues[index]!) {
+					minValues[index] = val;
+				}
+				if (maxValues[index] === undefined || val > maxValues[index]!) {
+					maxValues[index] = val;
+				}
+			}
+		}
+	}
+
+	return { minValues, maxValues };
+}
+
+/**
+ * Finds the unit string for a given variable from the hourly_units map.
+ * Returns an empty string if the variable is not found.
+ */
+export function findUnit(
+	hourlyUnits: Record<string, string>,
+	hourlyData: Record<string, unknown>,
+	variable: string
+): string {
+	for (const model of Object.keys(hourlyData)) {
+		if (model === 'time') continue;
+		if (model.startsWith(variable) && hourlyUnits[model]) {
+			return hourlyUnits[model];
+		}
+	}
+	return '';
+}

src/lib/utils/echarts/theme.ts

@@ -0,0 +1,106 @@
+/**
+ * ECharts Theme Utilities
+ *
+ * Centralized dark/light mode detection and color helpers for consistent
+ * chart theming across all ECharts visualizations.
+ */
+
+// ─── Color Palette ───────────────────────────────────────────────────────────
+
+/** Default series color palette matching the application's design system */
+export const SERIES_COLORS = [
+	'#5470c6',
+	'#91cc75',
+	'#fac858',
+	'#ee6666',
+	'#73c0de',
+	'#3ba272',
+	'#fc8452',
+	'#9a60b4',
+	'#ea7ccc',
+	'#4dc9f6'
+] as const;
+
+/** Semantic colors used for specific chart elements */
+export const CHART_COLORS = {
+	average: '#5e5e5e',
+	currentTimeLine: '#ef4444',
+	daylight: 'rgba(255, 255, 194, 0.3)',
+	spreadArea: 'rgba(173, 216, 230, 0.3)',
+	creditText: { light: '#374151', dark: '#e5e7eb' }
+} as const;
+
+// ─── Dark Mode Detection ─────────────────────────────────────────────────────
+
+/**
+ * Detects whether the application is currently in dark mode.
+ * Checks multiple sources: HTML class, data-theme attribute, and media query.
+ */
+export function isDarkMode(): boolean {
+	if (typeof document === 'undefined') return false;
+
+	const html = document.documentElement;
+	const dataTheme = html.getAttribute('data-theme');
+
+	// Explicit data-theme takes priority
+	if (dataTheme === 'dark') return true;
+	if (dataTheme === 'light') return false;
+
+	// Check for dark class (e.g. Tailwind dark mode)
+	if (html.classList.contains('dark')) return true;
+
+	// Fall back to system preference
+	return window.matchMedia?.('(prefers-color-scheme: dark)').matches ?? false;
+}
+
+// ─── Theme Colors ────────────────────────────────────────────────────────────
+
+export interface ThemeColors {
+	text: string;
+	textMuted: string;
+	axisLine: string;
+	splitLine: string;
+	background: string;
+	tooltipBg: string;
+	tooltipBorder: string;
+}
+
+const LIGHT_COLORS: ThemeColors = {
+	text: '#374151',
+	textMuted: 'rgba(55, 65, 81, 0.6)',
+	axisLine: 'rgba(55, 65, 81, 0.3)',
+	splitLine: 'rgba(55, 65, 81, 0.1)',
+	background: 'transparent',
+	tooltipBg: '#ffffff',
+	tooltipBorder: '#e5e7eb'
+};
+
+const DARK_COLORS: ThemeColors = {
+	text: '#e5e7eb',
+	textMuted: 'rgba(229, 231, 235, 0.6)',
+	axisLine: 'rgba(229, 231, 235, 0.3)',
+	splitLine: 'rgba(229, 231, 235, 0.1)',
+	background: 'transparent',
+	tooltipBg: '#1f2937',
+	tooltipBorder: '#374151'
+};
+
+/**
+ * Returns the full set of theme colors based on current dark/light mode.
+ */
+export function getThemeColors(): ThemeColors {
+	return isDarkMode() ? DARK_COLORS : LIGHT_COLORS;
+}
+
+/** Shorthand helpers kept for backward compatibility and convenience */
+export function getTextColor(): string {
+	return getThemeColors().text;
+}
+
+export function getAxisLineColor(): string {
+	return getThemeColors().axisLine;
+}
+
+export function getSplitLineColor(): string {
+	return getThemeColors().splitLine;
+}

src/lib/utils/index.ts

@@ -1,9 +1,4 @@
 export * from './ui.ts';
-export * from './meteo.ts';
-
-export const isNumeric = (num: string | number) =>
-	(typeof num === 'number' || (typeof num === 'string' && num.trim() !== '')) &&
-	!isNaN(num as number);
 
 export const pad = (n: string | number) => {
 	if (n === null || n === undefined) {
@@ -11,16 +6,3 @@ export const pad = (n: string | number) => {
 	}
 	return ('0' + n).slice(-2);
 };
-
-export function debounce<F extends (...args: unknown[]) => unknown>(
-	func: F,
-	timeout = 100
-): (this: ThisParameterType<F>, ...args: Parameters<F>) => void {
-	let timer: ReturnType<typeof setTimeout>;
-	return function (this: ThisParameterType<F>, ...args: Parameters<F>) {
-		clearTimeout(timer);
-		timer = setTimeout(() => {
-			func.apply(this, args);
-		}, timeout);
-	};
-}

src/lib/utils/location.ts

@@ -0,0 +1,108 @@
+import { error, redirect } from '@sveltejs/kit';
+
+import { type GeoLocation, storedLocation } from '$lib/stores/settings';
+
+export const geoLocationNameToRoute = (name: string) => {
+	const lowerCase = name.toLowerCase().replaceAll(' ', '-');
+	return lowerCase.normalize('NFD').replace(/[\u0300-\u036f]/g, '');
+};
+
+export function buildLocationRoute(location: GeoLocation): string {
+	const locationRoute = geoLocationNameToRoute(location.name);
+	if (location.population && location.population > 543000) {
+		return locationRoute;
+	}
+	return locationRoute + '_' + location.id;
+}
+
+interface ResolveLocationOptions {
+	urlLocation: string;
+	routePrefix: string;
+	event: {
+		fetch: typeof fetch;
+		url: URL;
+	};
+}
+
+export async function resolveLocationFromRoute({
+	urlLocation,
+	routePrefix,
+	event
+}: ResolveLocationOptions): Promise<GeoLocation> {
+	let location: GeoLocation;
+
+	if (urlLocation.includes('N') && urlLocation.includes('E')) {
+		const parts = urlLocation.split(/N|E/);
+		const latitude = parseFloat(parts[0]);
+		const longitude = parseFloat(parts[1]);
+
+		location = {
+			id: 0,
+			name: `${latitude}N° ${longitude}E°`,
+			latitude,
+			longitude,
+			elevation: 0,
+			feature_code: 'COORD',
+			country_code: undefined,
+			admin1_id: undefined,
+			admin3_id: undefined,
+			admin4_id: undefined,
+			timezone: 'UTC',
+			population: undefined,
+			postcodes: undefined,
+			country_id: undefined,
+			country: undefined,
+			admin1: undefined,
+			admin3: undefined,
+			admin4: undefined
+		};
+	} else {
+		let urlLocationName: string;
+		let urlLocationId: string | undefined;
+
+		if (urlLocation.includes('_')) {
+			const split = urlLocation.split('_');
+			urlLocationName = split[0];
+			urlLocationId = split[1];
+		} else if (urlLocation.includes('-')) {
+			urlLocationName = urlLocation.replace(/-/g, ' ');
+		} else if (/^\d+$/.test(urlLocation)) {
+			urlLocationName = '';
+			urlLocationId = urlLocation;
+		} else {
+			urlLocationName = urlLocation;
+			urlLocationId = undefined;
+		}
+
+		if (urlLocationId) {
+			const res = await event.fetch(
+				`https://geocoding-api.open-meteo.com/v1/get?id=${urlLocationId}`
+			);
+			location = await res.json();
+		} else {
+			const res = await event.fetch(
+				`https://geocoding-api.open-meteo.com/v1/search?name=${urlLocationName}&count=1&language=en&format=json`
+			);
+			const geocodingResponse = await res.json();
+			if (geocodingResponse.results) {
+				location = geocodingResponse.results[0];
+			} else {
+				error(404, 'Location not found');
+			}
+		}
+
+		const locationRoute = geoLocationNameToRoute(location.name);
+		const canonicalSuffix =
+			location.population && location.population > 543000
+				? locationRoute
+				: locationRoute + '_' + location.id;
+		const canonicalPath = `${routePrefix}${canonicalSuffix}`;
+
+		if (event.url.pathname !== canonicalPath) {
+			throw redirect(303, canonicalPath);
+		}
+	}
+
+	storedLocation.set(location);
+	return location;
+}

src/lib/utils/meteo.ts

@@ -1,7 +1 @@
-export function geoLocationNameToRoute(name: string): string {
+
-	// Placeholder implementation
-	return name
-		.toLowerCase()
-		.replace(/[^a-z0-9]+/g, '-')
-		.replace(/^-*|-*$/g, '');
-}

src/routes/+layout.svelte

@@ -1,9 +1,27 @@
 <script lang="ts">
+	import Header from '$lib/components/navigation/header.svelte';
+	import WeatherNav from '$lib/components/navigation/weather-nav.svelte';
+
 	import favicon from '$lib/assets/favicon.svg';
 
 	import './layout.css';
 
 	let { children } = $props();
+
+	let sidebarCollapsed = $state(false);
+	let mobileMenuOpen = $state(false);
+
+	const toggleSidebar = () => {
+		sidebarCollapsed = !sidebarCollapsed;
+	};
+
+	const toggleMobileMenu = () => {
+		mobileMenuOpen = !mobileMenuOpen;
+	};
+
+	const closeMobileMenu = () => {
+		mobileMenuOpen = false;
+	};
 </script>
 
 <svelte:head>
@@ -12,6 +30,33 @@
 	<meta name="viewport" content="width=device-width, initial-scale=1" />
 </svelte:head>
 
-<main class="min-h-screen">
+<div class="flex h-screen overflow-hidden bg-background text-foreground">
-	{@render children()}
+	<!-- Desktop sidebar -->
-</main>
+	<div class="hidden h-full shrink-0 md:block">
+		<WeatherNav collapsed={sidebarCollapsed} onToggle={toggleSidebar} />
+	</div>
+
+	<!-- Mobile overlay -->
+	{#if mobileMenuOpen}
+		<div class="fixed inset-0 z-50 md:hidden" role="presentation">
+			<!-- svelte-ignore a11y_no_static_element_interactions -->
+			<div
+				class="absolute inset-0 bg-black/30"
+				onclick={closeMobileMenu}
+				onkeydown={closeMobileMenu}
+			></div>
+			<div class="relative z-1 h-full w-55 shadow-lg">
+				<WeatherNav collapsed={false} onMobileClose={closeMobileMenu} />
+			</div>
+		</div>
+	{/if}
+
+	<!-- Main area: topbar + content -->
+	<div class="flex min-w-0 flex-1 flex-col h-full">
+		<Header onMenuToggle={toggleMobileMenu} />
+
+		<main class="flex-1 overflow-y-auto p-5 md:px-8 md:py-6">
+			{@render children()}
+		</main>
+	</div>
+</div>

src/routes/+page.svelte

@@ -1,271 +1,3 @@
-<script lang="ts">
-	import { onMount } from 'svelte';
-	import { fade, fly } from 'svelte/transition';
-
-	import { storedLocation } from '$lib/stores/settings';
-
-	import { Button } from '$lib/components/ui/button';
-	import {
-		Card,
-		CardContent,
-		CardDescription,
-		CardHeader,
-		CardTitle
-	} from '$lib/components/ui/card';
-
-	let mounted = $state(false);
-	let location = $derived($storedLocation);
-
-	onMount(() => {
-		mounted = true;
-	});
-
-	const features = [
-		{
-			title: 'Week Prediction',
-			description:
-				'Get detailed hourly weather forecasts for the next 7 days with interactive charts and temperature gradients.',
-			href: `/weather`,
-			icon: 'calendar',
-			gradient: 'from-blue-500 to-cyan-500'
-		},
-		{
-			title: 'Model Comparison',
-			description:
-				'Compare multiple weather models side-by-side to understand forecast uncertainty and accuracy.',
-			href: '/weather/compare',
-			icon: 'trending-up',
-			gradient: 'from-purple-500 to-pink-500'
-		},
-		{
-			title: '14 Day Weather',
-			description:
-				'Extended forecast with ensemble model spreads showing temperature ranges and uncertainty.',
-			href: '/weather/14-day',
-			icon: 'cloud',
-			gradient: 'from-green-500 to-blue-500'
-		}
-	];
-</script>
-
 <svelte:head>
-	<title>Open-Meteo Weather - Advanced Weather Forecasting</title>
+	<title>Open-Meteo Weather</title>
-	<meta
-		name="description"
-		content="Professional weather forecasting with multiple models, extended forecasts, and detailed comparisons. Powered by Open-Meteo API."
-	/>
 </svelte:head>
-
-<div
-	class="min-h-screen bg-gradient-to-br from-blue-50 via-white to-cyan-50 dark:from-gray-900 dark:via-gray-800 dark:to-blue-900"
->
-	<!-- Hero Section -->
-	<div class="container mx-auto px-6 pt-20 pb-16">
-		{#if mounted}
-			<div class="mb-16 text-center" in:fade={{ duration: 800, delay: 200 }}>
-				<h1
-					class="mb-6 bg-gradient-to-r from-blue-600 via-purple-600 to-cyan-600 bg-clip-text text-5xl font-bold text-transparent md:text-7xl"
-				>
-					Open-Meteo Weather
-				</h1>
-				<p class="mx-auto mb-8 max-w-3xl text-xl text-gray-600 md:text-2xl dark:text-gray-300">
-					Professional weather forecasting with advanced models, detailed comparisons, and extended
-					predictions
-				</p>
-
-				<!-- Quick Access Button -->
-				<div in:fly={{ y: 20, duration: 600, delay: 600 }}>
-					<Button
-						href="/weather"
-						size="lg"
-						class="bg-gradient-to-r from-blue-600 to-purple-600 px-8 py-3 text-lg text-white shadow-lg transition-all duration-300 hover:from-blue-700 hover:to-purple-700 hover:shadow-xl"
-					>
-						View Current Weather
-						<svg class="ml-2 h-5 w-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
-							<path
-								stroke-linecap="round"
-								stroke-linejoin="round"
-								stroke-width="2"
-								d="M13 7l5 5m0 0l-5 5m5-5H6"
-							/>
-						</svg>
-					</Button>
-				</div>
-			</div>
-		{/if}
-
-		<!-- Features Grid -->
-		<div class="mb-20 grid gap-8 md:grid-cols-3">
-			{#each features as feature, index (feature.title)}
-				{#if mounted}
-					<div in:fly={{ y: 30, duration: 600, delay: 300 + index * 150 }}>
-						<Card
-							class="h-full border-0 bg-white/80 shadow-lg backdrop-blur-sm transition-all duration-300 hover:-translate-y-1 hover:shadow-xl dark:bg-gray-800/80"
-						>
-							<CardHeader>
-								<div
-									class="h-12 w-12 rounded-xl bg-gradient-to-r {feature.gradient} mb-4 flex items-center justify-center"
-								>
-									{#if feature.icon === 'calendar'}
-										<svg
-											class="h-6 w-6 text-white"
-											fill="none"
-											stroke="currentColor"
-											viewBox="0 0 24 24"
-										>
-											<path
-												stroke-linecap="round"
-												stroke-linejoin="round"
-												stroke-width="2"
-												d="M8 7V3m8 4V3m-9 8h10M5 21h14a2 2 0 002-2V7a2 2 0 00-2-2H5a2 2 0 00-2 2v12a2 2 0 002 2z"
-											/>
-										</svg>
-									{:else if feature.icon === 'trending-up'}
-										<svg
-											class="h-6 w-6 text-white"
-											fill="none"
-											stroke="currentColor"
-											viewBox="0 0 24 24"
-										>
-											<path
-												stroke-linecap="round"
-												stroke-linejoin="round"
-												stroke-width="2"
-												d="M13 7h8m0 0v8m0-8l-8 8-4-4-6 6"
-											/>
-										</svg>
-									{:else if feature.icon === 'cloud'}
-										<svg
-											class="h-6 w-6 text-white"
-											fill="none"
-											stroke="currentColor"
-											viewBox="0 0 24 24"
-										>
-											<path
-												stroke-linecap="round"
-												stroke-linejoin="round"
-												stroke-width="2"
-												d="M3 15a4 4 0 004 4h9a5 5 0 10-.1-9.999 5.002 5.002 0 10-9.78 2.096A4.001 4.001 0 003 15z"
-											/>
-										</svg>
-									{/if}
-								</div>
-								<CardTitle class="mb-2 text-xl">{feature.title}</CardTitle>
-								<CardDescription class="text-gray-600 dark:text-gray-300">
-									{feature.description}
-								</CardDescription>
-							</CardHeader>
-							<CardContent class="pt-0">
-								<Button
-									href={feature.href}
-									variant="outline"
-									class="w-full hover:bg-gradient-to-r hover:{feature.gradient} transition-all duration-300 hover:border-transparent hover:text-white"
-								>
-									Explore {feature.title}
-								</Button>
-							</CardContent>
-						</Card>
-					</div>
-				{/if}
-			{/each}
-		</div>
-
-		<!-- Current Weather for Selected Location -->
-		{#if mounted && location}
-			<div class="mx-auto max-w-2xl" in:fade={{ duration: 600, delay: 800 }}>
-				<Card
-					class="border-blue-200 bg-gradient-to-r from-blue-500/10 to-purple-500/10 dark:border-blue-700"
-				>
-					<CardHeader>
-						<CardTitle class="text-center text-2xl">
-							Current Location: {location.name}
-						</CardTitle>
-						<CardDescription class="text-center">
-							{location.country} • {location.latitude?.toFixed(2)}°, {location.longitude?.toFixed(
-								2
-							)}°
-						</CardDescription>
-					</CardHeader>
-					<CardContent class="text-center">
-						<Button href="/weather" variant="default" class="bg-blue-600 hover:bg-blue-700">
-							View Detailed Forecast
-						</Button>
-					</CardContent>
-				</Card>
-			</div>
-		{/if}
-	</div>
-
-	<!-- Features Overview Section -->
-	<div class="bg-white/50 py-20 dark:bg-gray-800/50">
-		<div class="container mx-auto px-6">
-			{#if mounted}
-				<div class="mb-16 text-center" in:fade={{ duration: 600, delay: 1000 }}>
-					<h2 class="mb-4 text-4xl font-bold text-gray-800 dark:text-white">
-						Why Choose Our Weather Service?
-					</h2>
-					<p class="mx-auto max-w-2xl text-xl text-gray-600 dark:text-gray-300">
-						Powered by Open-Meteo API with multiple weather models and advanced visualization
-					</p>
-				</div>
-
-				<div class="grid gap-8 md:grid-cols-2 lg:grid-cols-4">
-					{#each [{ title: 'Multiple Models', desc: 'Compare ECMWF, GFS, and more', icon: 'layers' }, { title: 'Extended Forecasts', desc: 'Up to 14 days ahead', icon: 'clock' }, { title: 'Interactive Charts', desc: 'Highcharts visualization', icon: 'bar-chart' }, { title: 'Real-time Data', desc: 'Always up-to-date', icon: 'refresh' }] as feature, index (feature.title)}
-						<div class="text-center" in:fly={{ y: 20, duration: 500, delay: 1200 + index * 100 }}>
-							<div
-								class="mx-auto mb-4 flex h-16 w-16 items-center justify-center rounded-full bg-gradient-to-r from-blue-500 to-purple-500"
-							>
-								<svg
-									class="h-8 w-8 text-white"
-									fill="none"
-									stroke="currentColor"
-									viewBox="0 0 24 24"
-								>
-									{#if feature.icon === 'layers'}
-										<path
-											stroke-linecap="round"
-											stroke-linejoin="round"
-											stroke-width="2"
-											d="M19 11H5m14 0a2 2 0 012 2v6a2 2 0 01-2 2H5a2 2 0 01-2-2v-6a2 2 0 012-2m14 0V9a2 2 0 00-2-2M5 11V9a2 2 0 012-2m0 0V5a2 2 0 012-2h6a2 2 0 012 2v2M7 7h10"
-										/>
-									{:else if feature.icon === 'clock'}
-										<path
-											stroke-linecap="round"
-											stroke-linejoin="round"
-											stroke-width="2"
-											d="M12 8v4l3 3m6-3a9 9 0 11-18 0 9 9 0 0118 0z"
-										/>
-									{:else if feature.icon === 'bar-chart'}
-										<path
-											stroke-linecap="round"
-											stroke-linejoin="round"
-											stroke-width="2"
-											d="M9 19v-6a2 2 0 00-2-2H5a2 2 0 00-2 2v6a2 2 0 002 2h2a2 2 0 002-2zm0 0V9a2 2 0 012-2h2a2 2 0 012 2v10m-6 0a2 2 0 002 2h2a2 2 0 002-2m0 0V5a2 2 0 012-2h2a2 2 0 012 2v14a2 2 0 01-2 2h-2a2 2 0 01-2-2z"
-										/>
-									{:else if feature.icon === 'refresh'}
-										<path
-											stroke-linecap="round"
-											stroke-linejoin="round"
-											stroke-width="2"
-											d="M4 4v5h.582m15.356 2A8.001 8.001 0 004.582 9m0 0H9m11 11v-5h-.581m0 0a8.003 8.003 0 01-15.357-2m15.357 2H15"
-										/>
-									{/if}
-								</svg>
-							</div>
-							<h3 class="mb-2 text-lg font-semibold text-gray-800 dark:text-white">
-								{feature.title}
-							</h3>
-							<p class="text-gray-600 dark:text-gray-300">{feature.desc}</p>
-						</div>
-					{/each}
-				</div>
-			{/if}
-		</div>
-	</div>
-</div>
-
-<style>
-	:global(.container) {
-		max-width: 1200px;
-	}
-</style>

src/routes/+page.ts

@@ -0,0 +1,7 @@
+import { redirect } from '@sveltejs/kit';
+
+import type { PageLoad } from './$types';
+
+export const load = (async () => {
+	throw redirect(303, '/weather/week/');
+}) satisfies PageLoad;

src/routes/layout.css

@@ -6,71 +6,75 @@
 
 :root {
 	--radius: 0.625rem;
-	--background: oklch(1 0 0);
+	--background: oklch(0.985 0.002 90);
-	--foreground: oklch(0.129 0.042 264.695);
+	--foreground: oklch(0.205 0.02 60);
 	--card: oklch(1 0 0);
-	--card-foreground: oklch(0.129 0.042 264.695);
+	--card-foreground: oklch(0.205 0.02 60);
 	--popover: oklch(1 0 0);
-	--popover-foreground: oklch(0.129 0.042 264.695);
+	--popover-foreground: oklch(0.205 0.02 60);
-	--primary: oklch(0.208 0.042 265.755);
+	--primary: oklch(0.65 0.17 55);
-	--primary-foreground: oklch(0.984 0.003 247.858);
+	--primary-foreground: oklch(1 0 0);
-	--secondary: oklch(0.968 0.007 247.896);
+	--secondary: oklch(0.965 0.01 85);
-	--secondary-foreground: oklch(0.208 0.042 265.755);
+	--secondary-foreground: oklch(0.25 0.02 60);
-	--muted: oklch(0.968 0.007 247.896);
+	--muted: oklch(0.96 0.008 85);
-	--muted-foreground: oklch(0.554 0.046 257.417);
+	--muted-foreground: oklch(0.5 0.02 60);
-	--accent: oklch(0.968 0.007 247.896);
+	--accent: oklch(0.96 0.008 85);
-	--accent-foreground: oklch(0.208 0.042 265.755);
+	--accent-foreground: oklch(1 0 0);
 	--destructive: oklch(0.577 0.245 27.325);
-	--border: oklch(0.929 0.013 255.508);
+	--border: oklch(0.91 0.01 80);
-	--input: oklch(0.929 0.013 255.508);
+	--input: oklch(0.91 0.01 80);
-	--ring: oklch(0.704 0.04 256.788);
+	--ring: oklch(0.65 0.17 55);
-	--chart-1: oklch(0.646 0.222 41.116);
+	--chart-1: oklch(0.65 0.17 55);
-	--chart-2: oklch(0.6 0.118 184.704);
+	--chart-2: oklch(0.62 0.16 250);
-	--chart-3: oklch(0.398 0.07 227.392);
+	--chart-3: oklch(0.75 0.15 75);
-	--chart-4: oklch(0.828 0.189 84.429);
+	--chart-4: oklch(0.55 0.12 250);
-	--chart-5: oklch(0.769 0.188 70.08);
+	--chart-5: oklch(0.8 0.14 65);
-	--sidebar: oklch(0.984 0.003 247.858);
+	--sidebar-foreground: oklch(0.3 0.02 60);
-	--sidebar-foreground: oklch(0.129 0.042 264.695);
+	--sidebar-primary: oklch(0.65 0.17 55);
-	--sidebar-primary: oklch(0.208 0.042 265.755);
+	--sidebar-primary-foreground: oklch(1 0 0);
-	--sidebar-primary-foreground: oklch(0.984 0.003 247.858);
+	--sidebar-accent: oklch(0.95 0.03 70);
-	--sidebar-accent: oklch(0.968 0.007 247.896);
+	--sidebar-accent-foreground: oklch(0.3 0.02 60);
-	--sidebar-accent-foreground: oklch(0.208 0.042 265.755);
+	--sidebar-border: oklch(0.92 0.01 80);
-	--sidebar-border: oklch(0.929 0.013 255.508);
+	--sidebar-ring: oklch(0.65 0.17 55);
-	--sidebar-ring: oklch(0.704 0.04 256.788);
+	--sidebar: oklch(0.99 0.003 85);
+	--topbar-bg: oklch(1 0 0);
+	--topbar-border: oklch(0.92 0.01 80);
 }
 
 .dark {
-	--background: oklch(0.129 0.042 264.695);
+	--background: oklch(0.17 0.015 60);
-	--foreground: oklch(0.984 0.003 247.858);
+	--foreground: oklch(0.96 0.005 85);
-	--card: oklch(0.208 0.042 265.755);
+	--card: oklch(0.22 0.015 60);
-	--card-foreground: oklch(0.984 0.003 247.858);
+	--card-foreground: oklch(0.96 0.005 85);
-	--popover: oklch(0.208 0.042 265.755);
+	--popover: oklch(0.22 0.015 60);
-	--popover-foreground: oklch(0.984 0.003 247.858);
+	--popover-foreground: oklch(0.96 0.005 85);
-	--primary: oklch(0.929 0.013 255.508);
+	--primary: oklch(0.72 0.17 55);
-	--primary-foreground: oklch(0.208 0.042 265.755);
+	--primary-foreground: oklch(0.15 0.02 60);
-	--secondary: oklch(0.279 0.041 260.031);
+	--secondary: oklch(0.26 0.015 60);
-	--secondary-foreground: oklch(0.984 0.003 247.858);
+	--secondary-foreground: oklch(0.96 0.005 85);
-	--muted: oklch(0.279 0.041 260.031);
+	--muted: oklch(0.26 0.015 60);
-	--muted-foreground: oklch(0.704 0.04 256.788);
+	--muted-foreground: oklch(0.65 0.02 60);
-	--accent: oklch(0.279 0.041 260.031);
+	--accent: oklch(0.65 0.16 250);
-	--accent-foreground: oklch(0.984 0.003 247.858);
+	--accent-foreground: oklch(0.96 0.005 85);
 	--destructive: oklch(0.704 0.191 22.216);
 	--border: oklch(1 0 0 / 10%);
 	--input: oklch(1 0 0 / 15%);
-	--ring: oklch(0.551 0.027 264.364);
+	--ring: oklch(0.72 0.17 55);
-	--chart-1: oklch(0.488 0.243 264.376);
+	--chart-1: oklch(0.72 0.17 55);
-	--chart-2: oklch(0.696 0.17 162.48);
+	--chart-2: oklch(0.65 0.16 250);
-	--chart-3: oklch(0.769 0.188 70.08);
+	--chart-3: oklch(0.8 0.14 65);
-	--chart-4: oklch(0.627 0.265 303.9);
+	--chart-4: oklch(0.6 0.2 300);
-	--chart-5: oklch(0.645 0.246 16.439);
+	--chart-5: oklch(0.7 0.22 20);
-	--sidebar: oklch(0.208 0.042 265.755);
+	--sidebar-foreground: oklch(0.96 0.005 85);
-	--sidebar-foreground: oklch(0.984 0.003 247.858);
+	--sidebar-primary: oklch(0.72 0.17 55);
-	--sidebar-primary: oklch(0.488 0.243 264.376);
+	--sidebar-primary-foreground: oklch(0.15 0.02 60);
-	--sidebar-primary-foreground: oklch(0.984 0.003 247.858);
+	--sidebar-accent: oklch(0.26 0.02 55);
-	--sidebar-accent: oklch(0.279 0.041 260.031);
+	--sidebar-accent-foreground: oklch(0.96 0.005 85);
-	--sidebar-accent-foreground: oklch(0.984 0.003 247.858);
 	--sidebar-border: oklch(1 0 0 / 10%);
-	--sidebar-ring: oklch(0.551 0.027 264.364);
+	--sidebar-ring: oklch(0.72 0.17 55);
+	--sidebar: oklch(0.19 0.015 60);
+	--topbar-bg: oklch(0.2 0.015 60);
+	--topbar-border: oklch(1 0 0 / 10%);
 }
 
 @theme inline {
@@ -109,6 +113,8 @@
 	--color-sidebar-accent-foreground: var(--sidebar-accent-foreground);
 	--color-sidebar-border: var(--sidebar-border);
 	--color-sidebar-ring: var(--sidebar-ring);
+	--color-topbar: var(--topbar-bg);
+	--color-topbar-border: var(--topbar-border);
 }
 
 @layer base {

src/routes/page.svelte.spec.ts

@@ -1,14 +1,13 @@
 import { describe, expect, it } from 'vitest';
 import { render } from 'vitest-browser-svelte';
-import { page } from 'vitest/browser';
 
 import Page from './+page.svelte';
 
 describe('/+page.svelte', () => {
-	it('should render h1', async () => {
+	it('should render the redirect page with correct title', async () => {
 		render(Page);
 
-		const heading = page.getByRole('heading', { level: 1 });
+		const title = document.querySelector('title');
-		await expect.element(heading).toBeInTheDocument();
+		expect(title?.textContent).toBe('Open-Meteo Weather');
 	});
 });

src/routes/weather/+layout.svelte

@@ -1,216 +1,9 @@
 <script lang="ts">
-	import { onMount } from 'svelte';
-	import { get } from 'svelte/store';
-	import { fade, fly } from 'svelte/transition';
-
-	import { page } from '$app/stores';
-
-	import { storedLocation } from '$lib/stores/settings';
-
-	import LocationSearch from '$lib/components/location/location-search.svelte';
-	import WeatherNav from '$lib/components/navigation/weather-nav.svelte';
-
 	interface Props {
 		children?: import('svelte').Snippet;
 	}
 
 	let { children }: Props = $props();
-
-	interface CurrentWeather {
-		current: {
-			temperature_2m: number;
-			weather_code: number;
-		};
-	}
-
-	let location = $state(get(storedLocation));
-	let mounted = $state(false);
-	let currentWeather = $state<CurrentWeather | null>(null);
-
-	// Subscribe to location changes
-	storedLocation.subscribe((value) => {
-		location = value;
-		if (mounted) {
-			loadCurrentWeather();
-		}
-	});
-
-	onMount(() => {
-		mounted = true;
-		loadCurrentWeather();
-	});
-
-	const loadCurrentWeather = async () => {
-		if (!location?.latitude) return;
-
-		try {
-			const response = await fetch(
-				`https://api.open-meteo.com/v1/forecast?latitude=${location.latitude}&longitude=${location.longitude}&current=temperature_2m,weather_code&forecast_days=1`
-			);
-			const data = await response.json();
-			currentWeather = data;
-		} catch (error) {
-			console.error('Failed to load current weather:', error);
-		}
-	};
-
-	const getWeatherIcon = (code: number): string => {
-		const iconMap: Record<number, string> = {
-			0: '☀️',
-			1: '🌤️',
-			2: '⛅',
-			3: '☁️',
-			45: '🌫️',
-			48: '🌫️',
-			51: '🌦️',
-			53: '🌦️',
-			55: '🌦️',
-			61: '🌧️',
-			63: '🌧️',
-			65: '🌧️',
-			71: '🌨️',
-			73: '🌨️',
-			75: '❄️',
-			95: '⛈️'
-		};
-		return iconMap[code] || '☁️';
-	};
-
-	const getPageTitle = () => {
-		const path = $page.url.pathname;
-		if (path.includes('/compare')) return 'Model Comparison';
-		if (path.includes('/14-day')) return '14 Day Forecast';
-		if (path.includes('/week')) return 'Week Prediction';
-		return 'Weather Forecast';
-	};
 </script>
 
-<WeatherNav />
+{@render children?.()}
-
-<div
-	class="min-h-screen bg-gradient-to-br from-blue-50 via-white to-cyan-50 dark:from-gray-900 dark:via-gray-800 dark:to-blue-900"
->
-	<!-- Hero Header Section -->
-	<div class="relative overflow-hidden bg-gradient-to-r from-blue-600 via-purple-600 to-cyan-600">
-		<div class="absolute inset-0 bg-black/10"></div>
-		<div class="relative">
-			<div class="container mx-auto px-6 py-12">
-				{#if mounted}
-					<div class="flex flex-col items-center space-y-6" in:fade={{ duration: 800 }}>
-						<!-- Page Title -->
-						<div class="text-center" in:fly={{ y: -20, duration: 600, delay: 200 }}>
-							<h1 class="mb-2 text-3xl font-bold text-white md:text-4xl">
-								{getPageTitle()}
-							</h1>
-						</div>
-
-						<!-- Location Display & Search -->
-						<div class="w-full max-w-2xl" in:fly={{ y: 20, duration: 600, delay: 400 }}>
-							<div
-								class="rounded-2xl bg-white/95 p-6 shadow-2xl backdrop-blur-md dark:bg-gray-800/95"
-							>
-								<!-- Current Location Display -->
-								{#if location}
-									<div
-										class="flex flex-col items-center justify-between space-y-4 md:flex-row md:space-y-0 md:space-x-6"
-									>
-										<!-- Location Info -->
-										<div class="flex flex-1 items-center space-x-4">
-											<div class="flex-shrink-0">
-												<img
-													class="h-12 w-12 rounded-full shadow-lg"
-													src="/images/country-flags/{(
-														location.country_code || 'united_nations'
-													).toLowerCase()}.svg"
-													alt={location.country}
-												/>
-											</div>
-											<div class="flex-1 text-left">
-												<h2 class="text-2xl font-bold text-gray-900 dark:text-white">
-													{location.name}
-												</h2>
-												<p class="text-gray-600 dark:text-gray-300">
-													{#if location.admin1}{location.admin1},
-													{/if}{location.country}
-												</p>
-												<p class="text-sm text-gray-500 dark:text-gray-400">
-													{location.latitude?.toFixed(2)}°N, {location.longitude?.toFixed(2)}°E
-													{#if location.elevation}• {location.elevation?.toFixed(0)}m{/if}
-												</p>
-											</div>
-										</div>
-
-										<!-- Current Weather -->
-										{#if currentWeather}
-											<div class="flex items-center space-x-3" in:fade={{ delay: 800 }}>
-												<div class="text-center">
-													<div class="mb-1 text-3xl">
-														{getWeatherIcon(currentWeather.current.weather_code)}
-													</div>
-													<div class="text-2xl font-bold text-gray-900 dark:text-white">
-														{Math.round(currentWeather.current.temperature_2m)}°C
-													</div>
-												</div>
-											</div>
-										{/if}
-									</div>
-								{/if}
-
-								<!-- Location Search -->
-								<div class="mt-6 border-t border-gray-200 pt-6 dark:border-gray-600">
-									<LocationSearch
-										label="🔍 Change location or search for a new city..."
-										on:location={(event) => {
-											storedLocation.set(event.detail);
-										}}
-									/>
-								</div>
-							</div>
-						</div>
-
-						<!-- Stats Row (if location has population) -->
-						{#if location?.population}
-							<div
-								class="flex justify-center space-x-8 text-white/90"
-								in:fly={{ y: 20, duration: 600, delay: 600 }}
-							>
-								<div class="text-center">
-									<div class="text-sm font-medium">Population</div>
-									<div class="text-lg font-bold">{location.population.toLocaleString()}</div>
-								</div>
-								{#if location.timezone}
-									<div class="text-center">
-										<div class="text-sm font-medium">Timezone</div>
-										<div class="text-lg font-bold">{location.timezone}</div>
-									</div>
-								{/if}
-							</div>
-						{/if}
-					</div>
-				{/if}
-			</div>
-		</div>
-
-		<!-- Decorative elements -->
-		<div class="pointer-events-none absolute top-0 left-0 h-full w-full overflow-hidden">
-			<div class="absolute -top-4 -right-4 h-24 w-24 rounded-full bg-white/10"></div>
-			<div class="absolute top-1/3 -left-8 h-16 w-16 rounded-full bg-white/5"></div>
-			<div class="absolute bottom-8 left-1/4 h-12 w-12 rounded-full bg-white/10"></div>
-		</div>
-	</div>
-
-	<!-- Main Content -->
-	<div class="container mx-auto px-6 py-8">
-		{#if mounted}
-			<div in:fade={{ duration: 600, delay: 400 }}>
-				{@render children?.()}
-			</div>
-		{/if}
-	</div>
-</div>
-
-<style>
-	:global(.container) {
-		max-width: 1200px;
-	}
-</style>

src/routes/weather/+layout.ts

@@ -2,11 +2,10 @@ import { get } from 'svelte/store';
 
 import { storedLocation } from '$lib/stores/settings';
 
-import type { LayoutLoad } from '././$types';
+import type { LayoutLoad } from './$types';
-
-const location = get(storedLocation);
 
 export const load: LayoutLoad = async () => {
+	const location = get(storedLocation);
 	return {
 		title: `Weather ${location.name}`,
 		location: location

src/routes/weather/+page.ts

@@ -2,8 +2,6 @@ import { redirect } from '@sveltejs/kit';
 
 import type { PageLoad } from './$types';
 
-export const prerender = true;
+export const load = (async () => {
-
-export const load: PageLoad = async () => {
 	throw redirect(303, '/weather/week/');
-};
+}) satisfies PageLoad;

src/routes/weather/14-day/+layout.ts

@@ -2,11 +2,10 @@ import { get } from 'svelte/store';
 
 import { storedLocation } from '$lib/stores/settings';
 
-import type { LayoutLoad } from '././$types';
+import type { LayoutLoad } from './$types';
-
-const location = get(storedLocation);
 
 export const load: LayoutLoad = async () => {
+	const location = get(storedLocation);
 	return {
 		heroTitle: `14 Day Weather ${location.name}`,
 		heroDescription: location.admin1 ?? '' + ' ' + location.country

src/routes/weather/14-day/+page.svelte

@@ -1,331 +0,0 @@
-<script lang="ts">
-	import { onDestroy, onMount } from 'svelte';
-	import { get } from 'svelte/store';
-	import { fade } from 'svelte/transition';
-
-	import { dev } from '$app/environment';
-
-	import { storedLocation } from '$lib/stores/settings';
-
-	import { Label } from '$lib/components/ui/label';
-	import { Switch } from '$lib/components/ui/switch';
-
-	import '../compare/highcharts.css';
-	import { defaultParameters } from './options';
-
-	let node: HTMLElement;
-	let chart: any;
-	let Highcharts = $state<typeof import('highcharts') | null>(null);
-
-	let showLegend = $state(false);
-	let averageOnly = $state(false);
-
-	const location = get(storedLocation);
-
-	// Local component state for chart configuration
-	let params = $state({
-		latitude: [52.52],
-		longitude: [13.41],
-		...defaultParameters,
-		hourly: ['temperature_2m'],
-		models: ['gfs_seamless']
-	});
-
-	let count = $state(0);
-	onMount(async () => {
-		/// Highcharts needs to be loaded in `onMount` to work with prerendered SSG
-		Highcharts = (await import('highcharts')).default;
-		const more = (await import('highcharts/highcharts-more')).default;
-		// more(Highcharts);
-
-		if (dev) {
-			// const HighchartsDebugger = await import('highcharts/modules/debugger');
-			// HighchartsDebugger.default(Highcharts);
-			const Debugger = (
-				await import('highcharts/es-modules/Extensions/Debugger/Debugger.js' as any)
-			).default;
-			const ErrorMessages = (
-				await import('highcharts/es-modules/Extensions/Debugger/ErrorMessages.js' as any)
-			).default;
-			if (Highcharts) {
-				(Highcharts as any).errorMessages = ErrorMessages;
-				Debugger.compose(Highcharts.Chart);
-			}
-		}
-	});
-
-	$effect(() => {
-		const loadData = async () => {
-			count = 0;
-			if (Highcharts) {
-				node.replaceChildren();
-
-				const dataDaily = await fetch(
-					`https://api.open-meteo.com/v1/forecast?latitude=${location.latitude}&longitude=${location.longitude}&timeformat=unixtime&daily=sunset,sunrise&forecast_days=14`
-				);
-				const wd = await dataDaily.json();
-
-				const dataReq = await fetch(
-					`https://ensemble-api.open-meteo.com/v1/ensemble?latitude=${location.latitude}&longitude=${location.longitude}&hourly=${params.hourly?.join(',') || ''}&models=${params.models?.join(',') || ''}&timeformat=unixtime&forecast_days=14`
-				);
-				const data = await dataReq.json();
-
-				let plotBands: any = [];
-				if ('daily' in wd && 'sunrise' in wd.daily && 'sunset' in wd.daily) {
-					let rise = wd.daily.sunrise;
-					let set = wd.daily.sunset;
-					plotBands = rise.map(function (r: any, i: number) {
-						return {
-							color: 'rgba(255, 255, 194, 0.5)',
-							from: (r + data.utc_offset_seconds) * 1000,
-							to: (set[i] + data.utc_offset_seconds) * 1000
-						};
-					});
-				}
-
-				let minValues = new Array(data.hourly.time.length).fill(undefined);
-				let maxValues = new Array(data.hourly.time.length).fill(undefined);
-
-				for (let variable of params.hourly || []) {
-					const chartDiv = document.createElement('div');
-
-					let unit;
-
-					let hourly_starttime = (data.hourly.time[0] + data.utc_offset_seconds) * 1000;
-					let pointInterval = (data.hourly.time[1] - data.hourly.time[0]) * 1000;
-
-					const series = [];
-					let average = new Array(data.hourly.time.length).fill(0);
-					let averageCount = new Array(data.hourly.time.length).fill(0);
-
-					for (let [model, values] of Object.entries(data.hourly)) {
-						if (model === 'time') {
-							continue;
-						}
-						if (model.startsWith(variable)) {
-							for (let [index, val] of (values as any[]).entries()) {
-								if (val) {
-									let avVal = average[index];
-									average[index] = avVal + val;
-									averageCount[index]++;
-
-									if (minValues[index] > val || minValues[index] === undefined) {
-										minValues[index] = val;
-									}
-									if (maxValues[index] < val || maxValues[index] === undefined) {
-										maxValues[index] = val;
-									}
-								}
-							}
-
-							unit = data.hourly_units[model];
-						}
-					}
-
-					for (let [index, val] of average.entries()) {
-						average[index] = Math.round((val / averageCount[index]) * 10) / 10;
-					}
-
-					const minMax = [];
-					for (let [index, min] of minValues.entries()) {
-						minMax.push([min, maxValues[index]]);
-					}
-
-					series.push({
-						name: 'temperature_2m_spread',
-						data: minMax,
-						type: 'arearange',
-						tooltip: {
-							valueSuffix: ' ' + unit
-						},
-						pointStart: hourly_starttime,
-						pointInterval: pointInterval,
-						className: 'highcharts-spread-series'
-					});
-
-					series.push({
-						name: variable + '_average',
-						data: average,
-						dashStyle: 'ShortDashDot',
-						color: '#5e5e5e',
-						type:
-							unit == 'mm' || unit == 'cm' || unit == 'inch' || unit == 'MJ/m²'
-								? 'column'
-								: 'spline',
-						tooltip: {
-							valueSuffix: ' ' + unit
-						},
-						lineWidth: 4,
-						states: {
-							hover: {
-								lineWidth: 6
-							}
-						},
-						pointStart: hourly_starttime,
-						pointInterval: pointInterval,
-						className: 'highcharts-average-series'
-					});
-
-					new Highcharts!.Chart({
-						chart: {
-							renderTo: chartDiv,
-							height: showLegend ? '400px' : '300px',
-							styledMode: true,
-							marginLeft: 50,
-							marginRight: 0
-						},
-
-						credits: {
-							text: count === (params.hourly?.length || 0) - 1 ? 'Open-Meteo.com' : '',
-							href: 'http://open-meteo.com'
-						},
-
-						lang: {
-							locale: 'en-GB'
-						},
-
-						title: {
-							text: count === 0 ? 'Model Spread' : '',
-							align: 'left'
-						},
-
-						subtitle: {
-							text:
-								count === 0
-									? `Compare <span class="font-bold">${params.hourly?.join(', ') || ''}</span> in models: <span class="font-bold">` +
-										(params.models?.join(', ') || '') +
-										'</span>'
-									: '',
-							align: 'left'
-						},
-
-						yAxis: {
-							title: {
-								text: unit
-							}
-						},
-
-						xAxis: {
-							type: 'datetime',
-							plotLines: [
-								{
-									value: Date.now() + data.utc_offset_seconds * 1000,
-									color: 'red',
-									width: 2
-								}
-							],
-							plotBands: plotBands
-						},
-
-						plotOptions: {
-							spline: {
-								lineWidth: 2,
-								states: {
-									hover: {
-										lineWidth: 3
-									}
-								},
-								marker: {
-									enabled: false
-								}
-							},
-							column: {
-								pointWidth: 5
-							}
-						},
-
-						legend: {
-							enabled: showLegend,
-							layout: 'horizontal',
-							align: 'center',
-							verticalAlign: 'bottom'
-						},
-
-						series: series as any,
-
-						responsive: {
-							rules: [
-								{
-									condition: {
-										maxWidth: 800
-									}
-								}
-							]
-						},
-
-						tooltip: {
-							shared: true,
-							animation: false
-						}
-					});
-
-					count++;
-					node.appendChild(chartDiv);
-				}
-			}
-		};
-		loadData();
-	});
-
-	onDestroy(() => {
-		if (chart) {
-			chart.destroy();
-		}
-	});
-</script>
-
-<!-- min-h-[302px] min-h-[602px]  min-h-[902px] min-h-[1202px]  -->
-<div
-	class="container-wrapper relative -mx-6 md:mx-0 min-h-[{300 * (params.hourly?.length || 0) +
-		2}px]"
->
-	<div in:fade={{ duration: 300 }} out:fade={{ duration: 300 }} bind:this={node}></div>
-	<div
-		class="{count > 0
-			? 'pointer-events-none opacity-0'
-			: 'opacity-100'} absolute top-0 z-30 flex h-full w-full items-center justify-center rounded-lg bg-accent/100"
-	>
-		<svg
-			class="lucide lucide-loader-circle animate-spin"
-			xmlns="http://www.w3.org/2000/svg"
-			width="40"
-			height="40"
-			viewBox="0 0 24 24"
-			fill="none"
-			stroke="currentColor"
-			stroke-width="2"
-			stroke-linecap="round"
-			stroke-linejoin="round"
-		>
-			<path d="M21 12a9 9 0 1 1-6.219-8.56" />
-		</svg>
-		<span class="hidden">Loading...</span>
-	</div>
-</div>
-
-<div class="">
-	<div class="mt-6 flex flex-col items-center gap-6 md:mt-12 md:flex-row">
-		<div class="flex gap-2">
-			<Switch
-				id="show_legend"
-				name="Show legend"
-				bind:checked={showLegend}
-				onCheckedChange={() => {
-					params.hourly = params.hourly;
-				}}
-			/>
-			<Label for="show_legend" class="mb-[2px]  cursor-pointer text-lg">Show legend</Label>
-		</div>
-		<div class="flex gap-2">
-			<Switch
-				id="average_only"
-				name="Average only"
-				bind:checked={averageOnly}
-				onCheckedChange={() => {
-					params.hourly = params.hourly;
-				}}
-			/>
-			<Label for="average_only" class="mb-[2px]  cursor-pointer text-lg">Average only</Label>
-		</div>
-	</div>
-</div>

src/routes/weather/14-day/+page.ts

@@ -0,0 +1,15 @@
+import { get } from 'svelte/store';
+
+import { redirect } from '@sveltejs/kit';
+
+import { storedLocation } from '$lib/stores/settings';
+
+import { buildLocationRoute } from '$lib/utils/location';
+
+import type { PageLoad } from './$types';
+
+export const load = (async () => {
+	const location = get(storedLocation);
+	const locationRoute = buildLocationRoute(location);
+	throw redirect(303, '/weather/14-day/' + locationRoute);
+}) satisfies PageLoad;

src/routes/weather/14-day/[location]/+page.svelte

@@ -0,0 +1,225 @@
+<script lang="ts">
+	import { onDestroy, onMount } from 'svelte';
+
+	import { type GeoLocation, storedLocation } from '$lib/stores/settings';
+
+	import {
+		buildAverageSeries,
+		buildCurrentTimeSeries,
+		buildDaylightSeries,
+		buildSpreadSeries,
+		composeChartOption,
+		getThemeColors
+	} from '$lib/utils/echarts';
+
+	import { ChartContainer, ChartToolbar, EChart } from '$lib/components/charts';
+	import '$lib/components/charts/echarts.css';
+	import { Label } from '$lib/components/ui/label';
+	import { Switch } from '$lib/components/ui/switch';
+
+	import {
+		type EnsembleForecastResult,
+		type MarkArea,
+		fetchEnsembleForecast
+	} from '$lib/services/weather';
+
+	import { defaultParameters } from '../../options';
+
+	import type * as echarts from 'echarts';
+
+	// ─── Display State (does NOT trigger data re-fetch) ─────────────────────────
+
+	let showLegend = $state(false);
+
+	// ─── Data Fetch State ───────────────────────────────────────────────────────
+
+	let chartComponents: EChart[] = $state([]);
+	let chartInstances: echarts.ECharts[] = $state([]);
+	let chartOptions: Array<Record<string, unknown>> = $state([]);
+	let mounted = $state(false);
+	let loading = $state(true);
+
+	let location = $state<GeoLocation>($storedLocation);
+	storedLocation.subscribe((value) => {
+		location = value;
+	});
+
+	let params = $state({
+		...defaultParameters,
+		hourly: ['temperature_2m'],
+		models: ['gfs_seamless']
+	});
+
+	// ─── Cached API Response ────────────────────────────────────────────────────
+
+	interface FetchedData {
+		ensembleResult: EnsembleForecastResult;
+		timestamps: number[];
+		timezone: string;
+		markAreas: MarkArea[];
+	}
+
+	let fetchedData: FetchedData | null = $state(null);
+
+	// ─── Lifecycle ──────────────────────────────────────────────────────────────
+
+	onMount(() => {
+		mounted = true;
+	});
+
+	onDestroy(() => {
+		chartInstances = [];
+		chartOptions = [];
+		chartComponents = [];
+	});
+
+	// ─── Chart Instance Tracking ────────────────────────────────────────────────
+
+	function handleChartReady(chart: echarts.ECharts): void {
+		chartInstances = [...chartInstances, chart];
+	}
+
+	// ─── Data Fetching (only when params.hourly or params.models change) ───────
+
+	$effect(() => {
+		const hourlyVars = params.hourly;
+		const modelList = params.models;
+
+		if (!mounted || !hourlyVars?.length || !modelList?.length) return;
+
+		const loc = location;
+
+		const loadData = async () => {
+			loading = true;
+			chartInstances = [];
+			chartComponents = [];
+
+			const result: EnsembleForecastResult = await fetchEnsembleForecast({
+				latitude: loc.latitude!,
+				longitude: loc.longitude!,
+				hourlyVariables: hourlyVars,
+				models: modelList,
+				forecast_days: 14,
+				temperature_unit: params.temperature_unit as 'celsius' | 'fahrenheit',
+				wind_speed_unit: params.wind_speed_unit as 'kmh' | 'ms' | 'mph' | 'kn',
+				precipitation_unit: params.precipitation_unit as 'mm' | 'inch',
+				timezone: loc.timezone
+			});
+
+			fetchedData = {
+				ensembleResult: result,
+				timestamps: result.timestamps,
+				timezone: result.timezone,
+				markAreas: result.markAreas
+			};
+			console.log(fetchedData.timezone);
+
+			loading = false;
+		};
+
+		loadData();
+	});
+
+	// ─── Chart Option Building (runs when fetchedData OR display toggles change) ─
+
+	$effect(() => {
+		if (!fetchedData) return;
+
+		const { ensembleResult, timestamps, timezone, markAreas } = fetchedData;
+		const _showLegend = showLegend;
+
+		const colors = getThemeColors();
+		const variableCount = params.hourly?.length || 0;
+		const newOptions: Array<Record<string, unknown>> = [];
+
+		for (let vi = 0; vi < variableCount; vi++) {
+			const variable = params.hourly![vi];
+			const varData = ensembleResult.variables[variable];
+			if (!varData) continue;
+
+			const unit = varData.unit;
+			const { average, min: minValues, max: maxValues } = varData;
+
+			const series: Array<Record<string, unknown>> = [];
+
+			const spreadData: Array<[number, number, number]> = minValues.map(
+				(minVal, index) =>
+					[timestamps[index], minVal ?? 0, maxValues[index] ?? 0] as [number, number, number]
+			);
+
+			series.push(...buildSpreadSeries({ variable, spreadData }));
+
+			const averageData = average.map((val, idx) => [timestamps[idx], val] as [number, number]);
+			series.push(buildAverageSeries({ variable, data: averageData, unit }));
+
+			series.push(buildCurrentTimeSeries());
+
+			const daylightSeries = buildDaylightSeries({ markAreas });
+			if (daylightSeries) {
+				series.push(daylightSeries);
+			}
+
+			const isFirst = vi === 0;
+			const isLast = vi === variableCount - 1;
+
+			const option = composeChartOption({
+				title: isFirst
+					? {
+							text: 'Model Spread',
+							subtext: `Compare ${params.hourly?.join(', ') || ''} in models: ${params.models?.join(', ') || ''}`
+						}
+					: null,
+				tooltip: { unit, timezone },
+				legend: {
+					show: _showLegend,
+					data: [variable + '_average']
+				},
+				grid: {
+					hasTitle: isFirst,
+					hasSubtitle: isFirst,
+					showLegend: _showLegend
+				},
+				yAxis: { unit },
+				series,
+				toolbox: false,
+				showCredit: isLast,
+				colors,
+				timezone
+			});
+
+			newOptions.push(option);
+		}
+
+		chartOptions = newOptions;
+	});
+</script>
+
+<!-- ─── Chart Area ─────────────────────────────────────────────────────────── -->
+
+<ChartContainer
+	{loading}
+	chartCount={params.hourly?.length || 0}
+	chartHeight={showLegend ? 400 : 300}
+>
+	{#each chartOptions as option, i (i)}
+		<EChart
+			{option}
+			height={showLegend ? '400px' : '300px'}
+			onChartReady={handleChartReady}
+			bind:this={chartComponents[i]}
+		/>
+	{/each}
+</ChartContainer>
+
+<!-- ─── Toolbar: Controls + Download ───────────────────────────────────────── -->
+
+<div class="mt-6 md:mt-10">
+	<ChartToolbar charts={chartInstances} fileName="14-day-forecast">
+		{#snippet controls()}
+			<div class="flex gap-2">
+				<Switch id="show_legend" name="Show legend" bind:checked={showLegend} />
+				<Label for="show_legend" class="mb-0.5 cursor-pointer text-lg">Show legend</Label>
+			</div>
+		{/snippet}
+	</ChartToolbar>
+</div>

src/routes/weather/14-day/[location]/+page.ts

@@ -0,0 +1,13 @@
+import { resolveLocationFromRoute } from '$lib/utils/location';
+
+import type { PageLoad } from './$types';
+
+export const load: PageLoad = async (event) => {
+	const location = await resolveLocationFromRoute({
+		urlLocation: event.params.location,
+		routePrefix: '/weather/14-day/',
+		event
+	});
+
+	return { location };
+};

src/routes/weather/14-day/options.ts

@@ -1,7 +0,0 @@
-// Default configuration for 14-day ensemble forecast charts
-export const defaultParameters = {
-	timeformat: 'iso8601',
-	wind_speed_unit: 'kmh',
-	temperature_unit: 'celsius',
-	precipitation_unit: 'mm'
-};

src/routes/weather/canvas/cloud-cover.ts

@@ -1,81 +0,0 @@
-import type { ConfigInterface } from '../config';
-
-export default (
-	ctx: CanvasRenderingContext2D | null | undefined,
-	config: ConfigInterface,
-	series: Float32Array | null | undefined
-): void => {
-	if (ctx && series) {
-		const fillColor = `hsla(${config.styles.mutedForeground}, 0.5)`;
-
-		ctx.beginPath();
-		ctx.moveTo(0, 35 + (series[0] ** 1.5 / 1000) * 30);
-		for (const [index, value] of series.entries()) {
-			ctx.strokeStyle = '#444';
-			ctx.lineWidth = 0.1;
-			const nextValue = series[index + 1];
-
-			const xc =
-				(index * config.deltaX +
-					0.5 * config.deltaX +
-					(index * config.deltaX + 1.5 * config.deltaX)) /
-				2;
-			const yc = (35 + (value ** 1.5 / 1000) * 30 + 35 + (nextValue ** 1.5 / 1000) * 30) / 2;
-
-			ctx.quadraticCurveTo(
-				index * config.deltaX + 0.5 * config.deltaX,
-				35 + (value ** 1.5 / 1000) * 30,
-				xc,
-				yc
-			);
-		}
-
-		ctx.quadraticCurveTo(
-			config.maxX,
-			35 + (series[series.length - 1] ** 1.5 / 1000) * 30,
-			config.maxX,
-			35 + (series[series.length - 1] ** 1.5 / 1000) * 30
-		);
-		ctx.quadraticCurveTo(
-			config.maxX,
-			35 - (series[series.length - 1] ** 1.5 / 1000) * 30,
-			config.maxX,
-			35 - (series[series.length - 1] ** 1.5 / 1000) * 30
-		);
-
-		// same series but reversed
-		for (const [ind, _v] of series.entries()) {
-			const index = series.length - 1 - ind;
-			const value = series[index];
-			const nextValue = series[index - 1];
-
-			ctx.strokeStyle = '#444';
-			ctx.lineWidth = 0.1;
-
-			const xc =
-				(index * config.deltaX +
-					0.5 * config.deltaX +
-					(index * config.deltaX - 0.5 * config.deltaX)) /
-				2;
-			const yc = (35 - (value ** 2 / 10000) * 30 + (35 - (nextValue ** 2 / 10000) * 30)) / 2;
-
-			ctx.quadraticCurveTo(
-				index * config.deltaX + 0.5 * config.deltaX,
-				35 - (value ** 2 / 10000) * 30,
-				xc,
-				yc
-			);
-		}
-		ctx.quadraticCurveTo(
-			0.5 * config.deltaX,
-			35 - (series[0] ** 1.5 / 1000) * 30,
-			0,
-			35 - (series[0] ** 1.5 / 1000) * 30
-		);
-
-		ctx.closePath();
-		// USE PRE-CALC STYLE
-		ctx.fillStyle = fillColor;
-		ctx.fill();
-	}
-};

src/routes/weather/canvas/daylight.ts

@@ -1,22 +0,0 @@
-import type { ConfigInterface } from '../config';
-
-export default (
-	ctx: CanvasRenderingContext2D | null | undefined,
-	config: ConfigInterface,
-	series: Date[]
-): void => {
-	if (ctx) {
-		for (const [index, value] of series.entries()) {
-			if (value.getHours() > 6 && value.getHours() < 21) {
-				ctx.beginPath();
-				ctx.moveTo(index * config.deltaX, config.maxY);
-				ctx.lineTo(index * config.deltaX, 0);
-				ctx.lineTo((index + 1) * config.deltaX, 0);
-				ctx.lineTo((index + 1) * config.deltaX, config.maxY);
-				ctx.closePath();
-				ctx.fillStyle = '#f4ff0014';
-				ctx.fill();
-			}
-		}
-	}
-};

src/routes/weather/canvas/precip.ts

@@ -1,23 +0,0 @@
-import type { ConfigInterface } from '../config';
-
-export default (
-	ctx: CanvasRenderingContext2D | null | undefined,
-	config: ConfigInterface,
-	series: Float32Array | null | undefined
-): void => {
-	if (ctx && series) {
-		const strokeStyle = `hsla(${config.styles.primary}, 1)`;
-
-		for (const [index, value] of series.entries()) {
-			ctx.beginPath();
-			ctx.moveTo(index * config.deltaX + 0.5 * config.deltaX, config.maxY);
-
-			ctx.strokeStyle = strokeStyle;
-			ctx.lineWidth = 12;
-
-			ctx.lineTo(index * config.deltaX + 0.5 * config.deltaX, config.maxY - value ** 0.55 * 45);
-			ctx.stroke();
-			ctx.closePath();
-		}
-	}
-};

src/routes/weather/canvas/raster.ts

@@ -1,43 +0,0 @@
-import type { ConfigInterface } from '../config';
-
-export default (
-	ctx: CanvasRenderingContext2D | null | undefined,
-	config: ConfigInterface,
-	series: Date[],
-	today: Date,
-	canvasElement: HTMLCanvasElement
-): void => {
-	if (ctx && series) {
-		for (const [index, _v] of series.entries()) {
-			ctx.beginPath();
-			ctx.moveTo(index * config.deltaX, 0);
-			ctx.lineTo(index * config.deltaX, config.maxY);
-			if (series[index].getHours() === 0) {
-				ctx.strokeStyle = `hsla(${getComputedStyle(canvasElement).getPropertyValue('--border').split(' ').join(',')}, 1)`;
-				ctx.lineWidth = 3;
-			} else if (
-				series[index].getDate() === today.getDate() &&
-				series[index].getHours() === today.getHours()
-			) {
-				// fill now line
-				ctx.stroke();
-				ctx.closePath();
-				ctx.beginPath();
-				ctx.strokeStyle = 'red';
-				ctx.lineWidth = 5;
-				const minutes = today.getMinutes();
-				ctx.moveTo(index * config.deltaX + (config.deltaX / 60) * minutes, 0);
-				ctx.lineTo(index * config.deltaX + (config.deltaX / 60) * minutes, config.maxY);
-				ctx.stroke();
-				ctx.closePath();
-				ctx.strokeStyle = `hsla(${getComputedStyle(canvasElement).getPropertyValue('--border').split(' ').join(',')}, 0.75)`;
-				ctx.lineWidth = 1;
-			} else {
-				ctx.strokeStyle = `hsla(${getComputedStyle(canvasElement).getPropertyValue('--border').split(' ').join(',')}, 0.75)`;
-				ctx.lineWidth = 1;
-			}
-			ctx.stroke();
-			ctx.closePath();
-		}
-	}
-};

src/routes/weather/canvas/temp-gradient.ts

@@ -1,62 +0,0 @@
-import { getColor } from '../utils/colors';
-
-import type { ConfigInterface } from '../config';
-
-export default (
-	ctx: CanvasRenderingContext2D | null | undefined,
-	config: ConfigInterface,
-	series: Float32Array | null | undefined,
-	unit = 'celsius'
-): void => {
-	if (ctx && series) {
-		const tempGradientFill = ctx.createLinearGradient(0, 0, 0, config.maxY);
-		tempGradientFill.addColorStop(0, getColor(config.maxTemp, unit) + '5c');
-		tempGradientFill.addColorStop(0.25, getColor(config.maxTemp, unit) + '5c');
-		tempGradientFill.addColorStop(0.85, getColor(config.minTemp, unit) + '06');
-		tempGradientFill.addColorStop(1, getColor(config.minTemp, unit) + '00');
-
-		ctx.beginPath();
-		ctx.moveTo(
-			0,
-			0.25 * config.maxY + ((config.maxTemp - series[0]) / config.diffTemp) * 0.55 * config.maxY
-		);
-		for (const [index, value] of series.filter((t) => !isNaN(t)).entries()) {
-			const indexDiffTemp = config.maxTemp - value;
-			const indexDiffTempNext = config.maxTemp - series[index + 1];
-
-			ctx.strokeStyle = '#d3d3d3';
-			ctx.lineWidth = 4;
-
-			const xc =
-				(index * config.deltaX +
-					0.5 * config.deltaX +
-					(index * config.deltaX + 1.5 * config.deltaX)) /
-				2;
-			const yc =
-				(0.25 * config.maxY +
-					(indexDiffTemp / config.diffTemp) * 0.55 * config.maxY +
-					(0.25 * config.maxY + (indexDiffTempNext / config.diffTemp) * 0.55 * config.maxY)) /
-				2;
-
-			ctx.quadraticCurveTo(
-				index * config.deltaX + 0.5 * config.deltaX,
-				0.25 * config.maxY + (indexDiffTemp / config.diffTemp) * 0.55 * config.maxY,
-				xc,
-				yc
-			);
-		}
-		ctx.quadraticCurveTo(
-			config.maxX,
-			0.25 * config.maxY +
-				((config.maxTemp - series[series.length - 1]) / config.diffTemp) * 0.55 * config.maxY,
-			(config.maxX + config.maxX + config.deltaX) / 2,
-			0.25 * config.maxY +
-				((config.maxTemp - series[series.length - 1]) / config.diffTemp) * 0.55 * config.maxY
-		);
-		ctx.lineTo(config.maxX, config.maxY);
-		ctx.lineTo(0, config.maxY);
-		ctx.closePath();
-		ctx.fillStyle = tempGradientFill;
-		ctx.fill();
-	}
-};

src/routes/weather/compare/+layout.ts

@@ -1,14 +0,0 @@
-import { get } from 'svelte/store';
-
-import { storedLocation } from '$lib/stores/settings';
-
-import type { LayoutLoad } from '././$types';
-
-const location = get(storedLocation);
-
-export const load: LayoutLoad = async () => {
-	return {
-		heroTitle: `Model Compare ${location.name}`,
-		heroDescription: location.admin1 ?? '' + ' ' + location.country
-	};
-};

src/routes/weather/compare/+page.svelte

@@ -1,429 +0,0 @@
-<script lang="ts">
-	import { onDestroy, onMount } from 'svelte';
-	import { get } from 'svelte/store';
-	import { fade } from 'svelte/transition';
-
-	import { dev } from '$app/environment';
-
-	import { storedLocation } from '$lib/stores/settings';
-
-	import { Checkbox } from '$lib/components/ui/checkbox';
-	import { Label } from '$lib/components/ui/label';
-	import { Switch } from '$lib/components/ui/switch';
-
-	import { hourly, models } from '../options';
-	import './highcharts.css';
-	import { defaultParameters } from './options';
-
-	let node: HTMLElement;
-	let chart: any;
-	let Highcharts = $state<typeof import('highcharts') | null>(null);
-
-	let showLegend = $state(false);
-	let averageOnly = $state(false);
-
-	const location = get(storedLocation);
-
-	let params = $state({
-		latitude: [52.52],
-		longitude: [13.41],
-		...defaultParameters,
-		hourly: ['temperature_2m', 'rain', 'relative_humidity_2m'],
-		models: [
-			'ecmwf_ifs025',
-			'meteofrance_seamless',
-			'ukmo_seamless',
-			'icon_seamless',
-			'gem_seamless'
-		]
-	});
-
-	let count = $state(0);
-	onMount(async () => {
-		/// Highcharts needs to be loaded in `onMount` to work with prerendered SSG
-		Highcharts = (await import('highcharts')).default;
-
-		if (dev) {
-			// const HighchartsDebugger = await import('highcharts/modules/debugger');
-			// HighchartsDebugger.default(Highcharts);
-			const Debugger = (
-				await import('highcharts/es-modules/Extensions/Debugger/Debugger.js' as any)
-			).default;
-			const ErrorMessages = (
-				await import('highcharts/es-modules/Extensions/Debugger/ErrorMessages.js' as any)
-			).default;
-			if (Highcharts) {
-				(Highcharts as any).errorMessages = ErrorMessages;
-				Debugger.compose(Highcharts.Chart);
-			}
-		}
-	});
-
-	$effect(() => {
-		const loadData = async () => {
-			count = 0;
-			if (Highcharts) {
-				node.replaceChildren();
-
-				const dataReq = await fetch(
-					`https://api.open-meteo.com/v1/forecast?latitude=${location.latitude}&longitude=${location.longitude}&hourly=${params.hourly?.join(',') || ''}&models=${params.models?.join(',') || ''}&timeformat=unixtime&daily=sunset,sunrise`
-				);
-				const data = await dataReq.json();
-
-				let dailyFirstModelKey: string[] | string = Object.keys(data.daily)[1].split('_');
-				dailyFirstModelKey.shift();
-				dailyFirstModelKey = dailyFirstModelKey.join('_');
-
-				let plotBands: any = [];
-				if (
-					'daily' in data &&
-					'sunrise_' + dailyFirstModelKey in data.daily &&
-					'sunset_' + dailyFirstModelKey in data.daily
-				) {
-					let rise = data.daily['sunrise_' + dailyFirstModelKey];
-					let set = data.daily['sunset_' + dailyFirstModelKey];
-					plotBands = rise.map(function (r: any, i: number) {
-						return {
-							color: 'rgba(255, 255, 194, 0.5)',
-							from: (r + data.utc_offset_seconds) * 1000,
-							to: (set[i] + data.utc_offset_seconds) * 1000
-						};
-					});
-				}
-
-				for (let variable of params.hourly || []) {
-					const chartDiv = document.createElement('div');
-
-					let unit;
-
-					let hourly_starttime = (data.hourly.time[0] + data.utc_offset_seconds) * 1000;
-					let pointInterval = (data.hourly.time[1] - data.hourly.time[0]) * 1000;
-
-					const series = [];
-					let average = new Array(data.hourly.time.length).fill(0);
-					let averageCount = new Array(data.hourly.time.length).fill(0);
-
-					for (let [model, values] of Object.entries(data.hourly)) {
-						if (model === 'time') {
-							continue;
-						}
-						if (model.startsWith(variable)) {
-							for (let [index, val] of (values as any[]).entries()) {
-								if (val) {
-									let avVal = average[index];
-									average[index] = avVal + val;
-									averageCount[index]++;
-								}
-							}
-
-							unit = data.hourly_units[model];
-
-							if (!averageOnly) {
-								series.push({
-									name: model,
-									data: values,
-									type:
-										unit == 'mm' || unit == 'cm' || unit == 'inch' || unit == 'MJ/m²'
-											? 'column'
-											: 'spline',
-									tooltip: {
-										valueSuffix: ' ' + unit
-									},
-									pointStart: hourly_starttime,
-									pointInterval: pointInterval
-								});
-							}
-						}
-					}
-
-					for (let [index, val] of average.entries()) {
-						average[index] = Math.round((val / averageCount[index]) * 10) / 10;
-					}
-
-					series.push({
-						name: variable + '_average',
-						data: average,
-						dashStyle: 'ShortDashDot',
-						color: '#5e5e5e',
-						type:
-							unit == 'mm' || unit == 'cm' || unit == 'inch' || unit == 'MJ/m²'
-								? 'column'
-								: 'spline',
-						tooltip: {
-							valueSuffix: ' ' + unit
-						},
-						lineWidth: 4,
-						states: {
-							hover: {
-								lineWidth: 6
-							}
-						},
-						pointStart: hourly_starttime,
-						pointInterval: pointInterval,
-						className: 'highcharts-average-series'
-					});
-
-					new Highcharts!.Chart({
-						chart: {
-							renderTo: chartDiv,
-							height: showLegend ? '400px' : '300px',
-							styledMode: true,
-							marginLeft: 50,
-							marginRight: 0
-						},
-
-						credits: {
-							text: count === (params.hourly?.length || 0) - 1 ? 'Open-Meteo.com' : '',
-							href: 'http://open-meteo.com'
-						},
-
-						lang: {
-							locale: 'en-GB'
-						},
-
-						title: {
-							text: count === 0 ? 'Model Compare' : '',
-							align: 'left'
-						},
-
-						subtitle: {
-							text:
-								count === 0
-									? `Compare <span class="font-bold">${params.hourly?.join(', ') || ''}</span> in models: <span class="font-bold">` +
-										(params.models?.join(', ') || '') +
-										'</span>'
-									: '',
-							align: 'left'
-						},
-
-						yAxis: {
-							title: {
-								text: unit
-							}
-						},
-
-						xAxis: {
-							type: 'datetime',
-							plotLines: [
-								{
-									value: Date.now() + data.utc_offset_seconds * 1000,
-									color: 'red',
-									width: 2
-								}
-							],
-							plotBands: plotBands
-						},
-
-						plotOptions: {
-							spline: {
-								lineWidth: 2,
-								states: {
-									hover: {
-										lineWidth: 3
-									}
-								},
-								marker: {
-									enabled: false
-								}
-							},
-							column: {
-								pointWidth: 5
-							}
-						},
-
-						legend: {
-							enabled: showLegend,
-							layout: 'horizontal',
-							align: 'center',
-							verticalAlign: 'bottom'
-						},
-
-						series: series as any,
-
-						responsive: {
-							rules: [
-								{
-									condition: {
-										maxWidth: 800
-									}
-								}
-							]
-						},
-
-						tooltip: {
-							shared: true,
-							animation: false
-						}
-					});
-
-					count++;
-					node.appendChild(chartDiv);
-				}
-			}
-		};
-		loadData();
-	});
-
-	onDestroy(() => {
-		if (chart) {
-			chart.destroy();
-		}
-	});
-</script>
-
-<!-- min-h-[302px] min-h-[602px]  min-h-[902px] min-h-[1202px]  -->
-<div
-	class="container-wrapper relative -mx-6 md:mx-0 min-h-[{300 * (params.hourly?.length || 0) +
-		2}px]"
->
-	<div in:fade={{ duration: 300 }} out:fade={{ duration: 300 }} bind:this={node}></div>
-	<div
-		class="{count > 0
-			? 'pointer-events-none opacity-0'
-			: 'opacity-100'} absolute top-0 z-30 flex h-full w-full items-center justify-center rounded-lg bg-accent/100"
-	>
-		<svg
-			class="lucide lucide-loader-circle animate-spin"
-			xmlns="http://www.w3.org/2000/svg"
-			width="40"
-			height="40"
-			viewBox="0 0 24 24"
-			fill="none"
-			stroke="currentColor"
-			stroke-width="2"
-			stroke-linecap="round"
-			stroke-linejoin="round"
-		>
-			<path d="M21 12a9 9 0 1 1-6.219-8.56" />
-		</svg>
-		<span class="hidden">Loading...</span>
-	</div>
-</div>
-
-<div class="">
-	<div class="mt-6 flex flex-col items-center gap-6 md:mt-12 md:flex-row">
-		<div class="flex gap-2">
-			<Switch
-				id="show_legend"
-				name="Show legend"
-				bind:checked={showLegend}
-				onCheckedChange={() => {
-					params.hourly = params.hourly;
-				}}
-			/>
-			<Label for="show_legend" class="mb-[2px]  cursor-pointer text-lg">Show legend</Label>
-		</div>
-		<div class="flex gap-2">
-			<Switch
-				id="average_only"
-				name="Average only"
-				bind:checked={averageOnly}
-				onCheckedChange={() => {
-					params.hourly = params.hourly;
-				}}
-			/>
-			<Label for="average_only" class="mb-[2px]  cursor-pointer text-lg">Average only</Label>
-		</div>
-	</div>
-</div>
-
-<div class="mt-4 md:mt-8">
-	<div class="flex">
-		<a href="#models"><h2 id="models" class="text-2xl md:text-3xl">Models</h2></a>
-		{#if params.models && params.models.length > 0}
-			<div transition:fade={{ duration: 200 }} class="relative mt-[5px]">
-				<div
-					class="absolute -top-1 ml-2 rounded-full border-2 border-foreground/25 bg-secondary px-3 py-1 text-sm no-underline"
-				>
-					{params.models?.length || 0}&nbsp;/&nbsp;{models.length}
-				</div>
-			</div>
-		{/if}
-	</div>
-
-	<div class="mt-2 grid sm:grid-cols-2 lg:grid-cols-3 2xl:grid-cols-4">
-		<div class="mb-3">
-			{#each models as { value, label } (value)}
-				<div class="group flex items-center" title={label}>
-					<Checkbox
-						id="{value}_model"
-						class="border-border-dark cursor-pointer bg-muted/50 duration-100 group-hover:border-[currentColor]"
-						{value}
-						checked={params.models?.includes(value)}
-						aria-labelledby="{value}_label"
-						onCheckedChange={() => {
-							if (params.models?.includes(value)) {
-								params.models = params.models.filter((item) => {
-									return item !== value;
-								});
-							} else if (params.models) {
-								params.models.push(value);
-								params.models = params.models;
-							}
-						}}
-					/>
-					<Label
-						id="{value}_model_label"
-						for="{value}_model"
-						class="cursor-pointer truncate py-[0.1rem] pl-[0.42rem]">{label}</Label
-					>
-				</div>
-			{/each}
-		</div>
-	</div>
-
-	<!-- HOURLY -->
-	<div class="mt-6 md:mt-12">
-		<div class="flex">
-			<a href="#hourly_weather_variables"
-				><h2 id="hourly_weather_variables" class="text-2xl md:text-3xl">
-					Hourly Weather Variables
-				</h2></a
-			>
-			{#if params.hourly && params.hourly.length > 0}
-				<div transition:fade={{ duration: 200 }} class="relative mt-[5px]">
-					<div
-						class="absolute -top-1 ml-2 rounded-full border-2 border-foreground/25 bg-secondary px-3 py-1 text-sm no-underline"
-					>
-						{params.hourly?.length || 0}&nbsp;/&nbsp;{hourly.flat().length}
-					</div>
-				</div>
-			{/if}
-		</div>
-
-		<div
-			class="mt-2 grid grid-flow-row gap-x-2 gap-y-2 sm:grid-cols-2 lg:grid-cols-3 2xl:grid-cols-4"
-		>
-			{#each hourly as group, i (i)}
-				<div>
-					{#each group as { value, label } (value)}
-						<div class="group flex items-center" title={label}>
-							<Checkbox
-								id="{value}_hourly"
-								class="border-border-dark cursor-pointer bg-muted/50 duration-100 group-hover:border-[currentColor]"
-								{value}
-								checked={params.hourly?.includes(value)}
-								aria-labelledby="{value}_label"
-								onCheckedChange={() => {
-									if (params.hourly?.includes(value)) {
-										params.hourly = params.hourly.filter((item) => {
-											return item !== value;
-										});
-									} else if (params.hourly) {
-										params.hourly.push(value);
-										params.hourly = params.hourly;
-									}
-								}}
-							/>
-							<Label
-								id="{value}_label"
-								for="{value}_hourly"
-								class="cursor-pointer truncate py-[0.1rem] pl-[0.42rem]">{label}</Label
-							>
-						</div>
-					{/each}
-				</div>
-			{/each}
-		</div>
-	</div>
-</div>

src/routes/weather/compare/+page.ts

@@ -0,0 +1,15 @@
+import { get } from 'svelte/store';
+
+import { redirect } from '@sveltejs/kit';
+
+import { storedLocation } from '$lib/stores/settings';
+
+import { buildLocationRoute } from '$lib/utils/location';
+
+import type { PageLoad } from './$types';
+
+export const load = (async () => {
+	const location = get(storedLocation);
+	const locationRoute = buildLocationRoute(location);
+	throw redirect(303, '/weather/compare/' + locationRoute);
+}) satisfies PageLoad;

src/routes/weather/compare/[location]/+page.svelte

@@ -0,0 +1,369 @@
+<script lang="ts">
+	import { onDestroy, onMount } from 'svelte';
+	import { fade } from 'svelte/transition';
+
+	import { type GeoLocation, storedLocation } from '$lib/stores/settings';
+
+	import {
+		buildAverageSeries,
+		buildCurrentTimeSeries,
+		buildDaylightSeries,
+		buildModelSeries,
+		calculateAverage,
+		composeChartOption,
+		findUnit,
+		getThemeColors
+	} from '$lib/utils/echarts';
+
+	import { ChartContainer, ChartToolbar, EChart } from '$lib/components/charts';
+	import '$lib/components/charts/echarts.css';
+	import { Checkbox } from '$lib/components/ui/checkbox';
+	import { Label } from '$lib/components/ui/label';
+	import { Switch } from '$lib/components/ui/switch';
+
+	import {
+		type MarkArea,
+		type ModelCompareResult,
+		fetchModelComparison
+	} from '$lib/services/weather';
+
+	import { hourly, models as modelsFlat } from '../../options';
+	import { defaultParameters } from '../../options';
+	import ModelPictogramTimeline from './ModelPictogramTimeline.svelte';
+
+	import type * as echarts from 'echarts';
+
+	const models = [modelsFlat];
+
+	// ─── Display State (does NOT trigger data re-fetch) ─────────────────────────
+
+	let showLegend = $state(false);
+
+	// ─── Data Fetch State ───────────────────────────────────────────────────────
+
+	let chartComponents: EChart[] = $state([]);
+	let chartInstances: echarts.ECharts[] = $state([]);
+	let chartOptions: Array<Record<string, unknown>> = $state([]);
+	let mounted = $state(false);
+	let loading = $state(true);
+
+	let location = $state<GeoLocation>($storedLocation);
+	storedLocation.subscribe((value) => {
+		location = value;
+	});
+
+	let params = $state({
+		...defaultParameters,
+		hourly: [
+			'temperature_2m',
+			'rain',
+			'relative_humidity_2m',
+			'wind_speed_10m',
+			'wind_direction_10m'
+		],
+		models: [
+			'ecmwf_ifs',
+			'ecmwf_ifs025',
+			'meteofrance_seamless',
+			'ukmo_seamless',
+			'icon_seamless',
+			'gem_seamless',
+			'gfs_seamless'
+		]
+	});
+
+	// ─── Cached API Response ────────────────────────────────────────────────────
+
+	interface FetchedData {
+		hourly: Record<string, unknown>;
+		hourly_units: Record<string, string>;
+		timezone: string;
+		markAreas: MarkArea[];
+		timestamps: number[];
+		sunrise: number[];
+		sunset: number[];
+	}
+
+	let fetchedData: FetchedData | null = $state(null);
+
+	// ─── Lifecycle ──────────────────────────────────────────────────────────────
+
+	onMount(() => {
+		mounted = true;
+	});
+
+	onDestroy(() => {
+		chartInstances = [];
+		chartOptions = [];
+		chartComponents = [];
+	});
+
+	// ─── Chart Instance Tracking ────────────────────────────────────────────────
+
+	function handleChartReady(chart: echarts.ECharts): void {
+		chartInstances = [...chartInstances, chart];
+	}
+
+	// ─── Data Fetching (only when params.hourly or params.models change) ───────
+
+	$effect(() => {
+		const hourlyVars = params.hourly;
+		const modelList = params.models;
+
+		if (!mounted || !hourlyVars?.length || !modelList?.length) return;
+
+		const loc = location;
+
+		const loadData = async () => {
+			loading = true;
+			chartInstances = [];
+			chartComponents = [];
+
+			const result: ModelCompareResult = await fetchModelComparison({
+				latitude: loc.latitude!,
+				longitude: loc.longitude!,
+				hourlyVariables: [...new Set([...hourlyVars, 'weather_code'])],
+				models: modelList,
+				temperature_unit: params.temperature_unit as 'celsius' | 'fahrenheit',
+				wind_speed_unit: params.wind_speed_unit as 'kmh' | 'ms' | 'mph' | 'kn',
+				precipitation_unit: params.precipitation_unit as 'mm' | 'inch',
+				timezone: loc.timezone
+			});
+
+			fetchedData = {
+				hourly: result.hourlyFlat,
+				hourly_units: result.hourlyUnitsFlat,
+				timezone: result.timezone,
+				markAreas: result.markAreas,
+				timestamps: result.timestamps,
+				sunrise: result.sunrise,
+				sunset: result.sunset
+			};
+
+			loading = false;
+		};
+
+		loadData();
+	});
+
+	// ─── Chart Option Building (runs when fetchedData OR display toggles change) ─
+
+	$effect(() => {
+		if (!fetchedData) return;
+
+		const { hourly: hourlyData, hourly_units, timezone, markAreas, timestamps } = fetchedData;
+		const _showLegend = showLegend;
+
+		const colors = getThemeColors();
+		const chartVariables = params.hourly?.filter((v) => v !== 'weather_code') || [];
+		const variableCount = chartVariables.length;
+		const timeLength = timestamps.length;
+		const newOptions: Array<Record<string, unknown>> = [];
+
+		for (let vi = 0; vi < variableCount; vi++) {
+			const variable = chartVariables[vi];
+			const unit = findUnit(hourly_units, hourlyData, variable);
+
+			const series: Array<Record<string, unknown>> = [];
+
+			for (const [model, values] of Object.entries(hourlyData)) {
+				if (model === 'time') continue;
+				if (!model.startsWith(variable)) continue;
+
+				const seriesData = (values as (number | null)[]).map(
+					(val, idx) => [timestamps[idx], val] as [number, number | null]
+				);
+
+				series.push(
+					buildModelSeries({
+						name: model,
+						data: seriesData,
+						unit
+					})
+				);
+			}
+
+			const { average } = calculateAverage(hourlyData, variable, timeLength);
+			const averageData = average.map((val, idx) => [timestamps[idx], val] as [number, number]);
+			series.push(buildAverageSeries({ variable, data: averageData, unit }));
+
+			series.push(buildCurrentTimeSeries());
+
+			const daylightSeries = buildDaylightSeries({ markAreas });
+			if (daylightSeries) {
+				series.push(daylightSeries);
+			}
+
+			const isFirst = vi === 0;
+			const isLast = vi === variableCount - 1;
+
+			const option = composeChartOption({
+				title: isFirst
+					? {
+							text: 'Model Compare',
+							subtext: `Compare ${chartVariables.join(', ') || ''} in models: ${params.models?.join(', ') || ''}`
+						}
+					: null,
+				tooltip: { unit, timezone },
+				legend: { show: _showLegend },
+				grid: {
+					hasTitle: isFirst,
+					hasSubtitle: isFirst,
+					showLegend: _showLegend
+				},
+				yAxis: { unit },
+				series,
+				toolbox: false,
+				showCredit: isLast,
+				colors,
+				timezone
+			});
+
+			newOptions.push(option);
+		}
+
+		chartOptions = newOptions;
+	});
+</script>
+
+<!-- ─── Chart Area ─────────────────────────────────────────────────────────── -->
+
+<ChartContainer {loading} chartCount={chartOptions.length} chartHeight={showLegend ? 400 : 300}>
+	{#each chartOptions as option, i (i)}
+		<EChart
+			{option}
+			height={showLegend ? '400px' : '300px'}
+			onChartReady={handleChartReady}
+			bind:this={chartComponents[i]}
+		/>
+	{/each}
+</ChartContainer>
+
+{#if fetchedData && !loading}
+	<ModelPictogramTimeline
+		timestamps={fetchedData.timestamps}
+		hourlyFlat={fetchedData.hourly as Record<string, number[]>}
+		models={params.models || []}
+		sunrise={fetchedData.sunrise}
+		sunset={fetchedData.sunset}
+		timezone={fetchedData.timezone}
+	/>
+{/if}
+
+<!-- ─── Toolbar: Controls + Download ───────────────────────────────────────── -->
+
+<div class="mt-6 md:mt-10">
+	<ChartToolbar charts={chartInstances} fileName="model-comparison">
+		{#snippet controls()}
+			<div class="flex gap-2">
+				<Switch id="show_legend" name="Show legend" bind:checked={showLegend} />
+				<Label for="show_legend" class="mb-0.5 cursor-pointer text-lg">Show legend</Label>
+			</div>
+		{/snippet}
+	</ChartToolbar>
+</div>
+
+<!-- ─── Models Selection ───────────────────────────────────────────────────── -->
+
+<div class="mt-4 md:mt-8">
+	<div class="flex">
+		<a href="#models"><h2 id="models" class="text-2xl md:text-3xl">Models</h2></a>
+		{#if params.models && params.models.length > 0}
+			<div transition:fade={{ duration: 200 }} class="relative mt-1.25">
+				<div
+					class="absolute -top-1 ml-2 rounded-full border-2 border-foreground/25 bg-secondary px-3 py-1 text-sm no-underline"
+				>
+					{params.models?.length || 0}&nbsp;/&nbsp;{models.flat().length}
+				</div>
+			</div>
+		{/if}
+	</div>
+
+	<div class="mt-2 grid sm:grid-cols-2 lg:grid-cols-3 2xl:grid-cols-4">
+		{#each models as group, i (i)}
+			<div class="mb-3">
+				{#each group as item (item.value)}
+					{@const { value, label } = item as { value: string; label: string }}
+					<div class="group flex items-center" title={label}>
+						<Checkbox
+							id="{value}_model"
+							class="border-border-dark cursor-pointer bg-muted/50 duration-100 group-hover:border-[currentColor]"
+							{value}
+							checked={params.models?.includes(value)}
+							aria-labelledby="{value}_label"
+							onCheckedChange={() => {
+								if (params.models?.includes(value)) {
+									params.models = params.models.filter((item) => {
+										return item !== value;
+									});
+								} else if (params.models) {
+									params.models = [...params.models, value];
+								}
+							}}
+						/>
+						<Label
+							id="{value}_model_label"
+							for="{value}_model"
+							class="cursor-pointer truncate py-[0.1rem] pl-[0.42rem]">{label}</Label
+						>
+					</div>
+				{/each}
+			</div>
+		{/each}
+	</div>
+
+	<!-- ─── Hourly Variables Selection ─────────────────────────────────────── -->
+
+	<div class="mt-6 md:mt-12">
+		<div class="flex">
+			<a href="#hourly_weather_variables"
+				><h2 id="hourly_weather_variables" class="text-2xl md:text-3xl">
+					Hourly Weather Variables
+				</h2></a
+			>
+			{#if params.hourly && params.hourly.length > 0}
+				<div transition:fade={{ duration: 200 }} class="relative mt-1.25">
+					<div
+						class="absolute -top-1 ml-2 rounded-full border-2 border-foreground/25 bg-secondary px-3 py-1 text-sm no-underline"
+					>
+						{params.hourly?.length || 0}&nbsp;/&nbsp;{hourly.flat().length}
+					</div>
+				</div>
+			{/if}
+		</div>
+
+		<div
+			class="mt-2 grid grid-flow-row gap-x-2 gap-y-2 sm:grid-cols-2 lg:grid-cols-3 2xl:grid-cols-4"
+		>
+			{#each hourly as group, i (i)}
+				<div>
+					{#each group as { value, label } (value)}
+						<div class="group flex items-center" title={label}>
+							<Checkbox
+								id="{value}_hourly"
+								class="border-border-dark cursor-pointer bg-muted/50 duration-100 group-hover:border-[currentColor]"
+								{value}
+								checked={params.hourly?.includes(value)}
+								aria-labelledby="{value}_label"
+								onCheckedChange={() => {
+									if (params.hourly?.includes(value)) {
+										params.hourly = params.hourly.filter((item) => {
+											return item !== value;
+										});
+									} else if (params.hourly) {
+										params.hourly = [...params.hourly, value];
+									}
+								}}
+							/>
+							<Label
+								id="{value}_label"
+								for="{value}_hourly"
+								class="cursor-pointer truncate py-[0.1rem] pl-[0.42rem]">{label}</Label
+							>
+						</div>
+					{/each}
+				</div>
+			{/each}
+		</div>
+	</div>
+</div>

src/routes/weather/compare/[location]/+page.ts

@@ -0,0 +1,13 @@
+import { resolveLocationFromRoute } from '$lib/utils/location';
+
+import type { PageLoad } from './$types';
+
+export const load: PageLoad = async (event) => {
+	const location = await resolveLocationFromRoute({
+		urlLocation: event.params.location,
+		routePrefix: '/weather/compare/',
+		event
+	});
+
+	return { location };
+};

src/routes/weather/compare/[location]/ModelPictogramTimeline.svelte

@@ -0,0 +1,152 @@
+<script lang="ts">
+	import { formatZoned, getZonedHour } from '$lib/utils/date';
+
+	import { getWeatherIconName } from '../../utils/weather-codes';
+
+	interface Props {
+		timestamps: number[];
+		hourlyFlat: Record<string, number[]>;
+		models: string[];
+		sunrise: number[];
+		sunset: number[];
+		timezone: string;
+	}
+
+	let { timestamps, hourlyFlat, models, sunrise, sunset, timezone }: Props = $props();
+
+	let hourlyInterval = $state<1 | 3>(3);
+
+	let filteredIndices = $derived(
+		timestamps.reduce<number[]>((acc, ts, i) => {
+			if (hourlyInterval === 1 || getZonedHour(new Date(ts), timezone) % 3 === 0) {
+				acc.push(i);
+			}
+			return acc;
+		}, [])
+	);
+
+	function checkNewDay(i: number, ts: number): boolean {
+		if (i === 0) return false;
+		const prevTs = timestamps[filteredIndices[i - 1]];
+		return (
+			formatZoned(new Date(ts), timezone, 'd') !== formatZoned(new Date(prevTs), timezone, 'd')
+		);
+	}
+
+	/**
+	 * Determines if it's daytime for each timestamp based on sunrise/sunset data.
+	 */
+	let allDaytimeFlags = $derived(
+		timestamps.map((ts) => {
+			const tsS = ts / 1000;
+			for (let i = 0; i < sunrise.length; i++) {
+				const s = sunrise[i];
+				const e = sunset[i];
+				// Between sunrise and sunset of the same day
+				if (tsS >= s && tsS < e) return true;
+				// Between sunset of day i and sunrise of day i+1 (night)
+				const nextS = sunrise[i + 1] || Infinity;
+				if (tsS >= e && tsS < nextS) return false;
+			}
+			// Fallback: before the first sunrise
+			if (sunrise.length > 0 && tsS < sunrise[0]) return false;
+			return true;
+		})
+	);
+
+	/**
+	 * Filters models that actually have weather_code data available in the response.
+	 */
+	let displayModels = $derived(models.filter((m) => hourlyFlat[`weather_code_${m}`]));
+</script>
+
+{#snippet weatherIcon(name: string, size: number = 24)}
+	<svg class="inline-block fill-foreground" width={size} height={size}>
+		<use xlink:href="/images/weather-icons/{name}.svg#Layer_1"></use>
+	</svg>
+{/snippet}
+
+{#if displayModels.length > 0}
+	<div class="mt-8">
+		<div class="mb-4 flex items-center justify-between">
+			<h3 class="text-xl font-bold">Model Comparison Timeline</h3>
+			<div class="flex items-center gap-1.5 text-[13px] font-semibold">
+				<span class="select-none text-muted-foreground">3h</span>
+				<button
+					class="relative h-6 w-11 cursor-pointer rounded-full border transition-colors
+						{hourlyInterval === 1 ? 'border-primary/40 bg-primary' : 'border-border bg-muted'}"
+					onclick={() => (hourlyInterval = hourlyInterval === 1 ? 3 : 1)}
+					title="Toggle between 1-hour and 3-hour intervals"
+				>
+					<span
+						class="absolute top-0.75 size-4.5 rounded-full bg-white shadow-sm transition-[left] duration-200
+							{hourlyInterval === 1 ? 'left-5.5' : 'left-0.75'}"
+					></span>
+				</button>
+				<span class="select-none text-muted-foreground">1h</span>
+			</div>
+		</div>
+		<div
+			class="overflow-x-auto rounded-lg border border-border bg-card shadow-sm"
+			style="scrollbar-width: thin"
+		>
+			<table class="w-full border-collapse">
+				<thead>
+					<tr class="bg-muted/30">
+						<th
+							class="sticky left-0 z-20 w-32 border-b border-r border-border bg-muted/95 p-2 text-left text-xs font-bold"
+						>
+							Model
+						</th>
+						{#each filteredIndices as idx, i (idx)}
+							{@const ts = timestamps[idx]}
+							{@const isNewDay = checkNewDay(i, ts)}
+							<th
+								class="min-w-11 border-b border-r border-border/50 p-2 text-center text-[10px] {isNewDay
+									? 'border-l-2 border-l-primary/30'
+									: ''}"
+							>
+								<div class="font-bold">{formatZoned(new Date(ts), timezone, 'HH')}</div>
+								<div class="text-muted-foreground">
+									{isNewDay ? formatZoned(new Date(ts), timezone, 'EEE d') : ''}
+								</div>
+							</th>
+						{/each}
+					</tr>
+				</thead>
+				<tbody>
+					{#each displayModels as model (model)}
+						<tr class="group hover:bg-muted/10">
+							<td
+								class="sticky left-0 z-10 border-b border-r border-border bg-card p-2 text-[11px] font-semibold group-hover:bg-muted/20"
+							>
+								{model.replace(/_/g, ' ')}
+							</td>
+							{#each filteredIndices as idx, i (idx)}
+								{@const ts = timestamps[idx]}
+								{@const codes = hourlyFlat[`weather_code_${model}`]}
+								{@const code = codes ? codes[idx] : 0}
+								{@const day = allDaytimeFlags[idx]}
+								{@const isNewDay = checkNewDay(i, ts)}
+								<td
+									class="border-b border-r border-border/30 p-1.5 text-center {isNewDay
+										? 'border-l-2 border-l-primary/20'
+										: ''} {!day ? 'bg-indigo-950/5 dark:bg-indigo-500/5' : ''}"
+								>
+									{@render weatherIcon(getWeatherIconName(code, day))}
+								</td>
+							{/each}
+						</tr>
+					{/each}
+				</tbody>
+			</table>
+		</div>
+	</div>
+{/if}
+
+<style>
+	th,
+	td {
+		white-space: nowrap;
+	}
+</style>

src/routes/weather/compare/options.ts

@@ -1,7 +0,0 @@
-// Default configuration for weather comparison charts
-export const defaultParameters = {
-	timeformat: 'iso8601',
-	wind_speed_unit: 'kmh',
-	temperature_unit: 'celsius',
-	precipitation_unit: 'mm'
-};

src/routes/weather/config.d.ts

@@ -0,0 +1,8 @@
+interface ConfigInterface {
+	maxX: number;
+	maxY: number;
+	deltaX: number;
+	minTemp: number;
+	maxTemp: number;
+	diffTemp: number;
+}

src/routes/weather/config.ts

@@ -1,13 +0,0 @@
-export interface ConfigInterface {
-	maxX: number;
-	maxY: number;
-	deltaX: number;
-	minTemp: number;
-	maxTemp: number;
-	diffTemp: number;
-	styles: {
-		mutedForeground: string;
-		primary: string;
-		border: string;
-	};
-}

src/routes/weather/maps/+page.svelte

@@ -0,0 +1,28 @@
+<script lang="ts">
+	// Minimal page: no geolocation/state UI, just an embedded Open-Meteo map.
+	// const iframeSrc = 'https://maps.open-meteo.com/';
+	const iframeSrc =
+		'https://allow-cross-origin-loads.maps-5aj.pages.dev/?time=2026-02-21T1400#1.31/0/-0.1';
+</script>
+
+<svelte:head>
+	<title>Weather Map | Open-Meteo.com</title>
+	<link rel="canonical" href="https://open-meteo.com/weather/maps" />
+	<meta name="description" content="Interactive weather map powered by Open-Meteo" />
+</svelte:head>
+
+<!-- Full-viewport map. No surrounding UI or location state. -->
+<div
+	style="position:relative; inset:0; margin:0; padding:0; height:100%; width:100%; background:#000;"
+>
+	<iframe
+		src={iframeSrc}
+		title="Open-Meteo Interactive Map"
+		loading="lazy"
+		allowfullscreen
+		referrerpolicy="no-referrer"
+		class="map-iframe"
+		style="border:0; width:100%; height:100%; display:block;"
+		sandbox="allow-scripts allow-same-origin allow-forms allow-popups"
+	></iframe>
+</div>

src/routes/weather/options.ts

@@ -7,17 +7,52 @@ export const defaultParameters = {
 
 export const models = [
 	{ value: 'best_match', label: 'Best match' },
-	{ value: 'gfs_seamless', label: 'NCEP GFS Seamless' },
+	{ value: 'ecmwf_ifs', label: 'ECMWF IFS' },
-	{ value: 'jma_seamless', label: 'JMA Seamless' },
+	{ value: 'ecmwf_ifs025', label: 'ECMWF IFS 0.25' },
+	{ value: 'ecmwf_aifs025_single', label: 'ECMWF AIFS 0.25 Single' },
+	{ value: 'cma_grapes_global', label: 'CMA GRAPES Global' },
+	{ value: 'bom_access_global', label: 'BOM ACCESS Global' },
 	{ value: 'kma_seamless', label: 'KMA Seamless' },
-	{ value: 'icon_seamless', label: 'DWD ICON Seamless' },
+	{ value: 'kma_ldps', label: 'KMA LDPS' },
+	{ value: 'kma_gdps', label: 'KMA GDPS' },
+	{ value: 'meteofrance_seamless', label: 'Meteo-France Seamless' },
+	{ value: 'meteofrance_arpege_world', label: 'Meteo-France ARPEGE World' },
+	{ value: 'meteofrance_arpege_europe', label: 'Meteo-France ARPEGE Europe' },
+	{ value: 'meteofrance_arome_france', label: 'Meteo-France AROME France' },
+	{ value: 'meteofrance_arome_france_hd', label: 'Meteo-France AROME France HD' },
+	{ value: 'knmi_seamless', label: 'KNMI Seamless' },
+	{ value: 'knmi_harmonie_arome_europe', label: 'KNMI Harmonie Arome Europe' },
+	{ value: 'knmi_harmonie_arome_netherlands', label: 'KNMI Harmonie Arome Netherlands' },
+	{ value: 'dmi_seamless', label: 'DMI Seamless' },
+	{ value: 'dmi_harmonie_arome_europe', label: 'DMI Harmonie Arome Europe' },
+	{ value: 'ukmo_seamless', label: 'UKMO Seamless' },
+	{ value: 'ukmo_global_deterministic_10km', label: 'UKMO Global Deterministic 10km' },
+	{ value: 'ukmo_uk_deterministic_2km', label: 'UKMO UK Deterministic 2km' },
+	{ value: 'meteoswiss_icon_seamless', label: 'MeteoSwiss ICON Seamless' },
+	{ value: 'meteoswiss_icon_ch2', label: 'MeteoSwiss ICON CH2' },
+	{ value: 'meteoswiss_icon_ch1', label: 'MeteoSwiss ICON CH1' },
+	{ value: 'metno_nordic', label: 'MET Norway Nordic' },
+	{ value: 'metno_seamless', label: 'MET Norway Seamless' },
+	{ value: 'gem_hrdps_west', label: 'GEM HRDPS West' },
+	{ value: 'gem_regional', label: 'GEM Regional' },
+	{ value: 'gem_global', label: 'GEM Global' },
 	{ value: 'gem_seamless', label: 'GEM Seamless' },
-	{ value: 'meteofrance_seamless', label: 'Météo-France Seamless' },
+	{ value: 'jma_seamless', label: 'JMA Seamless' },
-	{ value: 'arpae_cosmo_seamless', label: 'ARPAE Seamless' },
+	{ value: 'jma_msm', label: 'JMA MSM' },
-	{ value: 'metno_seamless', label: 'MET Norway Seamless (with ECMWF)' },
+	{ value: 'jma_gsm', label: 'JMA GSM' },
-	{ value: 'knmi_seamless', label: 'KNMI Seamless (with ECMWF)' },
+	{ value: 'gfs_seamless', label: 'GFS Seamless' },
-	{ value: 'dmi_seamless', label: 'DMI Seamless (with ECMWF)' },
+	{ value: 'gfs_global', label: 'GFS Global' },
-	{ value: 'ukmo_seamless', label: 'UK Met Office Seamless' }
+	{ value: 'gfs_hrrr', label: 'GFS HRRR' },
+	{ value: 'gfs_graphcast025', label: 'GFS Graphcast 0.25' },
+	{ value: 'ncep_nbm_conus', label: 'NCEP NBM CONUS' },
+	{ value: 'ncep_nam_conus', label: 'NCEP NAM CONUS' },
+	{ value: 'ncep_aigfs025', label: 'NCEP AIGFS 0.25' },
+	{ value: 'ncep_hgefs025_ensemble_mean', label: 'NCEP HG-EFS 0.25 Ensemble Mean' },
+	{ value: 'icon_seamless', label: 'ICON Seamless (DWD)' },
+	{ value: 'icon_global', label: 'ICON Global' },
+	{ value: 'icon_eu', label: 'ICON EU' },
+	{ value: 'icon_d2', label: 'ICON-D2' },
+	{ value: 'italia_meteo_arpae_icon_2i', label: 'Italia Meteo ARPAE ICON 2i' }
 ];
 
 export const hourly = [

src/routes/weather/utils/colors.ts

@@ -1,11 +1,11 @@
 import colorScaleHex from './color-scale-hex';
 
-function componentFromStr(numStr: string, percent: number) {
+const componentFromStr = (numStr: string, percent: number) => {
 	const num = Math.max(0, parseInt(numStr, 10));
 	return percent ? Math.floor((255 * Math.min(100, num)) / 100) : Math.min(255, num);
-}
+};
 
-export function rgbToHex(rgb: string) {
+export const rgbToHex = (rgb: string): string => {
 	const rgbRegex = /^rgb\(\s*(-?\d+)(%?)\s*,\s*(-?\d+)(%?)\s*,\s*(-?\d+)(%?)\s*\)$/;
 	let result,
 		r,
@@ -23,57 +23,58 @@ export function rgbToHex(rgb: string) {
 		return '355522';
 	}
 	return hex;
-}
+};
 
-export const getColor = (value: number, unit = 'celsius'): string => {
+export const hexToRgb = (hex: string): [number, number, number] => {
-	let index = 0;
+	const h = hex.replace('#', '');
-	if (unit === 'celsius') {
+	return [
-		if (value <= -40) {
+		parseInt(h.substring(0, 2), 16),
-			index = 0;
+		parseInt(h.substring(2, 4), 16),
-		} else if (value >= 60) {
+		parseInt(h.substring(4, 6), 16)
-			index = colorScaleHex.length - 1;
+	];
-		} else {
+};
-			index = value + 40;
+
-		}
+export const getColor = (temperature: number, unit = 'celsius'): string => {
-	} else {
+	if (unit !== 'celsius') {
-		const tempInCelsius = Math.round(((value - 32) * 5) / 9);
+		temperature = Math.round(((temperature - 32) * 5) / 9);
-		if (tempInCelsius <= -40) {
-			index = 0;
-		} else if (tempInCelsius >= 60) {
-			index = colorScaleHex.length - 1;
-		} else {
-			index = tempInCelsius + 40;
-		}
 	}
 
-	index = Math.floor(index);
+	let index = 0;
+	if (temperature <= -40) {
+		index = 0;
+	} else if (temperature >= 60) {
+		index = colorScaleHex.length - 1;
+	} else {
+		index = Math.round(temperature) + 45;
+	}
 
 	return colorScaleHex[index];
 };
 
-export const textWhite = (hex: string): boolean => {
+export interface TempStyle {
-	const cleaned = (hex || '').replace('#', '').trim().toLowerCase();
+	bg: string;
-	if (!cleaned) {
+	fg: 'white' | 'black';
-		return true;
+}
-	}
 
-	let r = 0,
+export const getTempStyle = (temp: number, unit: string): TempStyle => {
-		g = 0,
+	const bg = getColor(temp, unit);
-		b = 0;
+	const fg = textWhite(hexToRgb(bg)) ? 'white' : 'black';
+	return { bg, fg };
+};
 
-	if (cleaned.length === 6) {
+export const textWhite = (
-		r = parseInt(cleaned.slice(0, 2), 16);
+	[r, g, b, a]: [number, number, number, number] | [number, number, number],
-		g = parseInt(cleaned.slice(2, 4), 16);
+	dark?: boolean,
-		b = parseInt(cleaned.slice(4, 6), 16);
+	globalOpacity?: number
-	} else {
+): boolean => {
-		throw new Error('Invalid color format');
+	const alpha = ((a || 1) * (globalOpacity || 100)) / 100;
+	if (alpha < 0.65) {
+		if (dark) {
+			return true;
+		} else {
+			return false;
+		}
 	}
-
+	// check luminance
-	if (Number.isNaN(r) || Number.isNaN(g) || Number.isNaN(b)) {
+	return r * 0.299 + g * 0.587 + b * 0.114 <= 150;
-		return true;
-	}
-
-	// Perceived brightness (YIQ / luma). If brightness is low, use white text.
-	const brightness = (r * 299 + g * 587 + b * 114) / 1000;
-	return brightness < 128;
 };

src/routes/weather/utils/weather-codes.ts

@@ -80,4 +80,10 @@ const weatherCodes: Record<number, string> = {
 	99: 'tornado'
 };
 
+export function getWeatherIconName(code: number, daytime: boolean): string {
+	const prefix = daytime ? 'day' : 'night';
+	const name = weatherCodes[code as keyof typeof weatherCodes] ?? 'clear';
+	return `wi-${prefix}-${name}`;
+}
+
 export default weatherCodes;

src/routes/weather/week/+page.ts

@@ -4,22 +4,12 @@ import { redirect } from '@sveltejs/kit';
 
 import { storedLocation } from '$lib/stores/settings';
 
-import { geoLocationNameToRoute } from '$lib/utils/meteo';
+import { buildLocationRoute } from '$lib/utils/location';
 
 import type { PageLoad } from './$types';
 
-export const prerender = true;
+export const load = (async () => {
-
-export const load: PageLoad = async () => {
 	const location = get(storedLocation);
-	const locationRoute = geoLocationNameToRoute(location.name || '');
+	const locationRoute = buildLocationRoute(location);
-	throw redirect(
+	throw redirect(303, '/weather/week/' + locationRoute);
-		303,
+}) satisfies PageLoad;
-		'/weather/week/' +
-			(location.population
-				? location.population > 543000
-					? locationRoute
-					: locationRoute + '_' + location.id
-				: locationRoute + '_' + location.id)
-	);
-};

src/routes/weather/week/[location]/+page.svelte

@@ -1,27 +1,19 @@
 <script lang="ts">
 	import { onMount } from 'svelte';
 	import { SvelteDate } from 'svelte/reactivity';
-	import { fade } from 'svelte/transition';
 
-	import { fetchWeatherApi } from 'openmeteo';
+	import { storedLocation } from '$lib/stores/settings';
 
-	import { type GeoLocation, storedLocation } from '$lib/stores/settings';
+	import { type WeekForecastResult, fetchWeekForecast } from '$lib/services/weather';
 
-	import { pad } from '$lib/utils/index';
+	import { defaultParameters } from '../../options';
+	import DailyCards from './DailyCards.svelte';
+	import HourlyTable from './HourlyTable.svelte';
+	import MeteogramCharts from './MeteogramCharts.svelte';
+	import ModelSelector from './ModelSelector.svelte';
 
-	import { Label } from '$lib/components/ui/label';
+	import type { GeoLocation } from '$lib/stores/settings';
-	import * as Select from '$lib/components/ui/select';
+	import type { FetchedDaily, FetchedHourly } from './types';
-
-	import cloudCover from '../../canvas/cloud-cover';
-	import daylight from '../../canvas/daylight';
-	import precip from '../../canvas/precip';
-	import raster from '../../canvas/raster';
-	import tempGradient from '../../canvas/temp-gradient';
-	import { defaultParameters, models } from '../../options';
-	import { getColor } from '../../utils/colors';
-	import weatherCodes from '../../utils/weather-codes';
-
-	import type { ConfigInterface } from '../../config';
 
 	let params = $state({
 		latitude: [$storedLocation.latitude],
@@ -30,657 +22,108 @@
 		...defaultParameters
 	});
 
-	let location = $state($storedLocation);
+	let location = $state<GeoLocation>($storedLocation);
 	storedLocation.subscribe((value) => {
 		location = value;
 	});
 
-	let diffTemp: number | undefined = $state();
+	let mounted = $state(false);
-	let maxTemp: number | undefined = $state();
+	let loading = $state(true);
 
-	let weatherCodesHourly: Float32Array | null | undefined = $state();
+	const selectedDay = new SvelteDate();
-	let canvasElement: HTMLCanvasElement | null | undefined = $state();
 
-	const today = new Date();
+	let fetchedHourly: FetchedHourly | null = $state(null);
-	let selectedDay = $state(new Date());
+	let fetchedDaily: FetchedDaily | null = $state(null);
-	let selectedDayIndex = $state(1);
 
-	let entries = $state(0);
+	let meteogramCharts: MeteogramCharts | undefined = $state();
 
-	let weather = $derived(
+	const switchDay = (date: Date) => {
-		(async (location: GeoLocation) => {
+		selectedDay.setTime(date.getTime());
-			const reqParams = {
+		meteogramCharts?.scrollToDay(date);
-				latitude: location.latitude,
-				longitude: location.longitude,
-				elevation: location.elevation,
-				// timezone: location.timezone, ???
-				models: [params.models],
-				hourly: [
-					'precipitation',
-					'precipitation_probability',
-					'temperature_2m',
-					'weather_code',
-					'windspeed_10m',
-					'winddirection_10m',
-					'cloud_cover',
-					'relative_humidity_2m'
-				].join(','),
-				forecast_days: 6,
-				past_days: 1,
-				temperature_unit: params.temperature_unit,
-				wind_speed_unit: params.wind_speed_unit,
-				precipitation_unit: params.precipitation_unit
-			};
-			const url = 'https://api.open-meteo.com/v1/forecast';
-			const responses = await fetchWeatherApi(url, reqParams);
-			const response = responses[0];
-			const utcOffsetSeconds = response.utcOffsetSeconds();
-			const hourly = response.hourly()!;
-
-			weatherCodesHourly = hourly.variables(3)?.valuesArray();
-
-			let hourlyTime = [
-				...Array((Number(hourly.timeEnd()) - Number(hourly.time())) / hourly.interval())
-			].map(
-				(_, i) =>
-					new Date((Number(hourly.time()) + i * hourly.interval() + utcOffsetSeconds) * 1000)
-			);
-			const hourlyTemps = hourly.variables(2)?.valuesArray();
-			const hourlyCloudCover = hourly.variables(6)?.valuesArray();
-			const hourlyPrecip = hourly.variables(0)?.valuesArray();
-			const indexes = [];
-			if (hourlyTemps) {
-				for (const index of hourlyTemps.keys()) {
-					indexes.push(index);
-				}
-			}
-
-			const maxX = 10000;
-			const maxY = 500;
-			const deltaX = 10000 / (hourly.variables(0)?.valuesArray()?.length || 1);
-
-			const ctx = canvasElement?.getContext('2d');
-			if (ctx) {
-				ctx.clearRect(0, 0, maxX, maxY);
-
-				const minTemp = Math.min(
-					...(hourly.variables(2)?.valuesArray() ?? []).filter((t) => !isNaN(t))
-				);
-				maxTemp = Math.max(...(hourly.variables(2)?.valuesArray() ?? []).filter((t) => !isNaN(t)));
-				diffTemp = maxTemp - minTemp;
-
-				const config: ConfigInterface = {
-					maxX: maxX,
-					maxY: maxY,
-					deltaX: deltaX,
-					minTemp: minTemp,
-					maxTemp: maxTemp,
-					diffTemp: diffTemp,
-					styles: {
-						mutedForeground: '240 3.7% 15.9%',
-						primary: '222.2 47.4% 11.2%',
-						border: '214.3 31.8% 91.4%'
-					}
-				};
-
-				// create canvas
-				daylight(ctx, config, hourlyTime);
-				raster(ctx, config, hourlyTime, today, canvasElement!);
-				tempGradient(ctx, config, hourlyTemps, params.temperature_unit);
-				cloudCover(ctx, config, hourlyCloudCover);
-				precip(ctx, config, hourlyPrecip);
-			}
-
-			return {
-				entries: [
-					{
-						id: 0,
-						name: 'temperature_2m',
-						title: 'Temperature',
-						values: hourly
-							.variables(2)
-							?.valuesArray()
-							?.map((t) => Number(t.toFixed(1)))
-					},
-					{
-						id: 1,
-						name: 'precipitation',
-						title: 'Precipitation',
-						values: hourly
-							.variables(0)
-							?.valuesArray()
-							?.map((p) => Number(p.toFixed(1)))
-					},
-					{
-						id: 2,
-						name: 'precipitation_probability',
-						title: 'Precip Prob.',
-						values: hourly
-							.variables(1)
-							?.valuesArray()
-							?.map((p) => Number(p.toFixed(0)))
-					},
-					{
-						id: 3,
-						name: 'windspeed_10m',
-						title: 'Wind',
-						values: hourly
-							.variables(4)
-							?.valuesArray()
-							?.map((p) => Number(p.toFixed(0)))
-					},
-					{
-						id: 4,
-						name: 'relative_humidity_2m',
-						title: 'Rel. Hum.',
-						values: hourly
-							.variables(7)
-							?.valuesArray()
-							?.map((p) => Number(p.toFixed(0)))
-					}
-				],
-				entriesLength: hourly.variables(0)?.valuesArray()?.length,
-				hourlyTime: hourlyTime,
-				windDirections: hourly.variables(5)?.valuesArray(),
-				indexes: indexes
-			};
-		})(location)
-	);
-
-	let weatherDaily = $derived(
-		(async (location: GeoLocation) => {
-			const reqParams = {
-				latitude: location.latitude,
-				longitude: location.longitude,
-				elevation: location.elevation,
-				// timezone: location.timezone, ???
-				models: [params.models],
-				daily: [
-					'weather_code',
-					'temperature_2m_max',
-					'temperature_2m_min',
-					'sunrise',
-					'sunset',
-					'sunshine_duration',
-					'precipitation_sum',
-					'windspeed_10m_max',
-					'windgusts_10m_max',
-					'winddirection_10m_dominant'
-				].join(','),
-				forecast_days: 6,
-				past_days: 1,
-				temperature_unit: params.temperature_unit,
-				wind_speed_unit: params.wind_speed_unit,
-				precipitation_unit: params.precipitation_unit
-			};
-			const url = 'https://api.open-meteo.com/v1/forecast';
-			const responses = await fetchWeatherApi(url, reqParams);
-			const response = responses[0];
-			const utcOffsetSeconds = response.utcOffsetSeconds();
-			const daily = response.daily()!;
-
-			return {
-				daily: {
-					time: [...Array((Number(daily.timeEnd()) - Number(daily.time())) / daily.interval())].map(
-						(_, i) =>
-							new Date((Number(daily.time()) + i * daily.interval() + utcOffsetSeconds) * 1000)
-					),
-					weather_code: daily.variables(0)!,
-					temperature_2m_max: daily.variables(1)!,
-					temperature_2m_min: daily.variables(2)!,
-					sunrise: daily.variables(3)!,
-					sunset: daily.variables(4)!,
-					sunshine_duration: daily.variables(5)!,
-					precipitation_sum: daily.variables(6)!,
-					windspeed_10m_max: daily.variables(7)!,
-					windgusts_10m_max: daily.variables(8)!,
-					winddirection_10m_dominant: daily.variables(9)!
-				}
-			};
-		})(location)
-	);
-
-	let winddir = true;
-	entries = 6;
-
-	let scrollDiv: HTMLElement | undefined = $state();
-	let tableCells;
-
-	const switchDay = (date: Date, index: number) => {
-		selectedDay = date;
-
-		tableCells = document.querySelectorAll('td.time');
-
-		for (let tableCell of tableCells) {
-			const htmlCell = tableCell as HTMLElement;
-			if (Number(htmlCell.dataset['date']) === selectedDay.getDate()) {
-				scrollDiv?.scrollTo({ left: htmlCell.offsetLeft - 110, behavior: 'smooth' });
-				break;
-			}
-		}
-
-		selectedDayIndex = index;
 	};
 
 	onMount(() => {
-		setTimeout(() => {
+		mounted = true;
-			tableCells = document.querySelectorAll('td.time');
-			for (let tableCell of tableCells) {
-				const htmlCell = tableCell as HTMLElement;
-				if (Number(htmlCell.dataset['date']) === selectedDay.getDate()) {
-					scrollDiv?.scrollTo({ left: htmlCell.offsetLeft - 110 });
-					break;
-				}
-			}
-		}, 150);
-
-		document.onkeydown = (e) => {
-			if (scrollDiv !== document.activeElement && !scrollDiv?.contains(document.activeElement)) {
-				if (e.key === 'ArrowLeft') {
-					if (selectedDay.getDate() >= today.getDate()) {
-						let newDate = new Date();
-						newDate.setDate(selectedDay.getDate() - 1);
-						switchDay(newDate, selectedDayIndex - 1);
-					}
-				}
-				if (e.key === 'ArrowRight') {
-					if (selectedDay.getDate() <= today.getDate() + 4) {
-						let newDate = new Date();
-						newDate.setDate(selectedDay.getDate() + 1);
-						switchDay(newDate, selectedDayIndex + 1);
-					}
-				}
-			}
-		};
 	});
 
-	let modelSelected = $derived(models.find((mo) => String(mo.value) === params.models?.[0]));
+	$effect(() => {
-	// let modelSelectedValue = $derived(params.models[0]);
+		const loc = location;
-	//
+		const modelList = params.models;
+
+		if (!mounted || !loc || !modelList?.length) return;
+
+		const loadData = async () => {
+			loading = true;
+
+			const result: WeekForecastResult = await fetchWeekForecast({
+				latitude: loc.latitude!,
+				longitude: loc.longitude!,
+				model: modelList[0],
+				temperature_unit: params.temperature_unit as 'celsius' | 'fahrenheit',
+				wind_speed_unit: params.wind_speed_unit as 'kmh' | 'ms' | 'mph' | 'kn',
+				precipitation_unit: params.precipitation_unit as 'mm' | 'inch',
+				forecast_days: 7,
+				past_days: 0,
+				timezone: loc.timezone
+			});
+
+			fetchedHourly = {
+				hourly: result.hourly,
+				utc_offset_seconds: result.utcOffsetSeconds,
+				timezone: result.timezone,
+				timestamps: result.hourlyTimestamps,
+				hourlyDates: result.hourlyDates,
+				markAreas: result.markAreas
+			};
+
+			fetchedDaily = {
+				daily: result.daily,
+				timezone: result.timezone,
+				dailyDates: result.dailyDates
+			};
+
+			loading = false;
+		};
+
+		loadData();
+	});
 </script>
 
 <svelte:head>
 	<title>Weather | Open-Meteo.com</title>
 	<link rel="canonical" href="https://open-meteo.com/weather" />
-	<meta name="description" content="segseg" />
+	<meta name="description" content="7-day weather forecast with detailed hourly data" />
 </svelte:head>
 
-<div class="">
+<div class="week-page">
 	<div class="weather-content" style="min-height: 50vh">
-		<div
+		<DailyCards daily={fetchedDaily} {selectedDay} units={params} onSelectDay={switchDay} />
-			in:fade
-			out:fade
-			style="min-height: 256px"
-			class="weather-week gap-md-2 mb-4 flex flex-col md:flex-row"
-		>
-			{#await weatherDaily then wd}
-				{#each wd.daily.time as time, index (index)}
-					{@const selected = time.getDate() === selectedDay.getDate()}
-					{#if wd.daily.temperature_2m_max.values(index) != null && !isNaN(Number(wd.daily.temperature_2m_max
-									.values(index)!
-									.toFixed(1)))}
-						<button
-							style="transition: 300ms; min-width: 13%; {selected ? 'transform: scale(1.025)' : ''}"
-							class="cursor-pointer"
-							onclick={() => {
-								switchDay(time, index);
-							}}
-						>
-							<div
-								class="gap-md-1 flex flex-row items-center justify-center rounded-xl p-1 md:flex-col md:justify-center md:p-3 {selected
-									? 'bg-accent'
-									: ''}"
-							>
-								<div class="weather-week-date">
-									<b>{time.getDate()} - {time.getMonth() + 1}</b>
-								</div>
 
-								<div
+		{#if fetchedHourly && fetchedDaily}
-									data-text={time.toLocaleDateString('en-GB', { weekday: 'long' })}
+			<HourlyTable
-									class="grow-text relative mx-auto inline-flex flex-col {selected
+				data={fetchedHourly}
-										? 'font-bold'
+				daily={fetchedDaily}
-										: ''}"
+				{selectedDay}
-								>
+				units={params}
-									{time.toLocaleDateString('en-GB', { weekday: 'long' })}
+				locationName={location.name ?? ''}
-								</div>
+			/>
+		{/if}
 
-								<div class="weather-week-icon pe-none py-2">
+		{#if fetchedHourly}
-									<svg class="fill-foreground" width="60px" height="60px">
+			<MeteogramCharts
-										<use
+				bind:this={meteogramCharts}
-											xlink:href="/images/weather-icons/wi-day-{weatherCodes[
+				data={fetchedHourly}
-												(wd.daily.weather_code.values(index) ?? 0) as number
+				{selectedDay}
-											]}.svg#Layer_1"
+				units={params}
-										></use>
+				{loading}
-									</svg>
+			/>
-								</div>
+		{/if}
-								<div
-									class="weather-temp-max flex min-w-[65px] justify-center rounded-t p-1 text-sm"
-									style={`background-color: ${getColor(Math.round(wd.daily.temperature_2m_max.values(index) ?? 0), params.temperature_unit)}; color: ${(wd.daily.temperature_2m_min.values(index) ?? 0) < (params.temperature_unit === 'celsius' ? 4 : 7) || (wd.daily.temperature_2m_min.values(index) ?? 0) >= (params.temperature_unit === 'celsius' ? 30 : 104) ? 'white' : 'black'}`}
-								>
-									{wd.daily.temperature_2m_max.values(index)?.toFixed(1)}
-									{params.temperature_unit === 'celsius' ? '°C' : '°F'}
-								</div>
-								<div
-									class="weather-temp-min flex min-w-[65px] justify-center rounded-b p-1 text-sm"
-									style={`background: ${getColor(Math.round(wd.daily.temperature_2m_min.values(index) ?? 0), params.temperature_unit)}; color: ${(wd.daily.temperature_2m_min.values(index) ?? 0) < (params.temperature_unit === 'celsius' ? 4 : 7) || (wd.daily.temperature_2m_min.values(index) ?? 0) >= (params.temperature_unit === 'celsius' ? 30 : 104) ? 'white' : 'black'}`}
-								>
-									{wd.daily.temperature_2m_min.values(index)?.toFixed(1)}
-									{params.temperature_unit === 'celsius' ? '°C' : '°F'}
-								</div>
-								<div class="mt-2 flex items-center justify-center gap-1">
-									<div class="relative flex h-6 w-6 items-center justify-center">
-										<div class="absolute">
-											<svg class="fill-foreground" width="26px" height="26px">
-												<use
-													class="stroke-2"
-													xlink:href="/images/weather-icons/wi-day-sunny.svg#Layer_1"
-												></use>
-											</svg>
-										</div>
-									</div>
 
-									{Number((wd.daily.sunshine_duration.values(index) ?? 0) / 3600).toFixed(0)}h
+		<ModelSelector
-								</div>
+			selectedModel={params.models?.[0] ?? 'best_match'}
-								<div class="mt-1 flex items-center justify-center">
+			onModelChange={(model) => {
-									<div class="relative flex h-6 w-6 items-center justify-center">
+				params.models = [model];
-										<div class="absolute">
+			}}
-											<svg class="fill-foreground" width="28px" height="28px">
+		/>
-												<use
-													class="stroke-2"
-													xlink:href="/images/weather-icons/wi-raindrop.svg#Layer_1"
-												></use>
-											</svg>
-										</div>
-									</div>
-									{Number(wd.daily.precipitation_sum.values(index)).toFixed(
-										1
-									)}{params.precipitation_unit === 'mm' ? 'mm' : "'"}
-								</div>
-							</div>
-						</button>
-					{/if}
-				{/each}
-			{:catch error}
-				<p style="color: red">{error.message}</p>
-			{/await}
-		</div>
-		<div class="ml-22 md:ml-0">
-			<h3 class="text-xl font-bold">
-				{selectedDay.toLocaleDateString('en-GB', { weekday: 'long' })}
-				<small>
-					{selectedDay.getDate() === new Date(today.getTime() - 24 * 60 * 60 * 1000).getDate()
-						? ' (Yesterday)'
-						: ''}
-					{selectedDay.getDate() === today.getDate() ? ' (Today)' : ''}
-					{selectedDay.getDate() === new Date(today.getTime() + 24 * 60 * 60 * 1000).getDate()
-						? ' (Tomorrow)'
-						: ''}
-				</small>
-			</h3>
-		</div>
-		<div
-			bind:this={scrollDiv}
-			style=" height: {218 + entries * 27.5}px; "
-			class="w-ful relative -mx-5 overflow-x-scroll overflow-y-hidden md:-ml-[110px]"
-		>
-			<canvas
-				bind:this={canvasElement}
-				id="weather_week_canvas"
-				class="border border-border"
-				style="margin-top: 24px; margin-left: 110px; width: 5000px; height: 200px; "
-				height="500px"
-				width="10000px"
-			></canvas>
-			<table in:fade class="absolute bottom-0 border-b border-border">
-				<caption style="display:none"> Weather Week {location.name} </caption>
-				<tbody>
-					{#await weather then weather}
-						<tr>
-							<th
-								scope="row"
-								class="time"
-								style="color: transparent; padding-left: 4px;  background: transparent; left: 0px; min-width: 110px; max-width: 110px; position: sticky;"
-								>Time</th
-							>
-							{#each weather.indexes as index, j (j)}
-								<td
-									class="time {weather.hourlyTime[index].getDate() === today.getDate() &&
-									weather.hourlyTime[index].getHours() === today.getHours()
-										? 'now'
-										: ''}"
-									data-date={weather.hourlyTime[index].getDate()}
-									data-time={weather.hourlyTime[index].getHours() + ':00'}
-									style="font-size: 11px; position: absolute; bottom: {188 +
-										27 * entries}px; left:{111 +
-										(5000 / (weather.entriesLength || 1)) * index}px; min-width: {5000 /
-										(weather.entriesLength || 1)}px; max-width: {5000 /
-										(weather.entriesLength || 1)}px;"
-									>{weather.hourlyTime[index].getHours() < 10 ? '0' : ''}{weather.hourlyTime[
-										index
-									].getHours()}</td
-								>
-							{/each}
-						</tr>
-						<!-- icons -->
-						<tr>
-							<th
-								scope="row"
-								style="color: transparent; padding-left: 4px;  background: transparent; left: 0px; min-width: 110px; max-width: 110px; position: sticky;"
-								>Icons</th
-							>
-							{#each weather.indexes as index, j (j)}
-								{@const now =
-									weather.hourlyTime[index].getDate() === today.getDate() &&
-									weather.hourlyTime[index].getHours() === today.getHours()}
-								<td
-									style="position: absolute; bottom: {27.5 * entries -
-										24 +
-										0.8 * 200 -
-										0.54 *
-											200 *
-											((maxTemp! - weather.entries[0].values![index]) / diffTemp!)}px; left:{116 +
-										(5000 / (weather.entriesLength || 1)) * index}px; min-width: {5000 /
-										(weather.entriesLength || 1)}px; max-width: {5000 /
-										(weather.entriesLength || 1)}px;"
-									><svg class="fill-foreground {now ? 'scale-125' : ''}" width="20px" height="20px">
-										<use
-											class="stroke-2"
-											xlink:href="/images/weather-icons/wi-{weather.hourlyTime[index].getHours() >
-												6 && weather.hourlyTime[index].getHours() < 21
-												? 'day'
-												: 'night'}-{weatherCodes[weatherCodesHourly![index] as number]}.svg#Layer_1"
-										></use>
-									</svg></td
-								>
-							{/each}
-						</tr>
-
-						<!-- min / max -->
-						<tr>
-							<th
-								scope="row"
-								style="color: transparent; padding-left: 4px;  background: transparent; left: 0px; min-width: 110px; max-width: 110px; position: sticky;"
-								>Temp graph</th
-							>
-							{#each weather.indexes as index, j (j)}
-								{@const temp = weather.entries?.[0]?.values?.[index]}
-
-								{#if temp !== undefined && !isNaN(temp)}
-									<td
-										class={weather.hourlyTime[index].getDate() === today.getDate() &&
-										weather.hourlyTime[index].getHours() === today.getHours()
-											? 'now'
-											: ''}
-										style="position: absolute; bottom: {27.5 * entries -
-											49 +
-											0.8 * 200 -
-											0.55 * 200 * ((maxTemp! - temp!) / diffTemp!)}px; left:{111 +
-											(5000 / (weather.entriesLength || 1)) * index}px; min-width: {5000 /
-											(weather.entriesLength || 1)}px; max-width: {5000 /
-											(weather.entriesLength || 1)}px;">{temp?.toFixed(0)}</td
-									>
-								{/if}
-							{/each}
-						</tr>
-						{#each weather.entries as entry, i (i)}
-							<tr class="border-t border-border">
-								<th
-									scope="row"
-									class="bg-background text-left"
-									style="left: 0px; min-width: 110px; max-width: 110px; position: sticky;"
-									>{entry.title}</th
-								>
-
-								{#each weather.indexes as index, j (j)}
-									{#if entry.values && !isNaN(entry.values[index])}
-										<td
-											class="border-r border-border {weather.hourlyTime[index].getDate() ===
-												today.getDate() && weather.hourlyTime[index].getHours() === today.getHours()
-												? 'now'
-												: ''}"
-											style="min-width: {5000 / (weather.entriesLength || 1)}px; max-width: {5000 /
-												(weather.entriesLength || 1)}px;
-											{entry.name === 'temperature_2m'
-												? 'background: ' +
-													getColor(
-														Math.round(weather.entries[0].values![index]),
-														params.temperature_unit
-													)
-												: ''};
-											{entry.name === 'temperature_2m'
-												? 'color: ' +
-													(weather.entries[0].values![index] <
-														(params.temperature_unit === 'celsius' ? -13 : 7) ||
-													weather.entries[0].values![index] >=
-														(params.temperature_unit === 'celsius' ? 40 : 104)
-														? 'white'
-														: 'black')
-												: ''};
-											{entry.name === 'precipitation_probability'
-												? 'background: rgba(0, 0, 230,' +
-													weather.entries[2].values![index] / 120 +
-													')'
-												: ''};
-											{entry.name === 'precipitation_probability'
-												? 'color: ' +
-													(weather.entries[2].values![index] > 50
-														? 'white'
-														: 'hsl(var(--foreground)')
-												: ''};
-											{entry.name === 'relative_humidity_2m'
-												? 'background: rgba(0, 240, 240,' +
-													weather.entries[4].values![index] ** 3.8 / 10 ** 8.2 +
-													')'
-												: ''};"
-											>{entry.name === 'precipitation' || entry.name === 'temperature_2m'
-												? entry.values![index].toFixed(1)
-												: entry.values![index]}</td
-										>
-									{/if}
-								{/each}
-							</tr>
-						{/each}
-						{#if winddir}
-							<!-- winddir -->
-							<tr class="border-t border-border">
-								<th
-									scope="row"
-									class="bg-background text-left"
-									style="z-index: 20; left: 0px; min-width: 110px; max-width: 110px; position: sticky;"
-									>Wind Dir.</th
-								>
-								{#each weather.indexes as index, j (j)}
-									{#if weather.windDirections && !isNaN(weather.windDirections[index])}
-										<td
-											class="border-r border-border {weather.hourlyTime[index].getDate() ===
-												today.getDate() && weather.hourlyTime[index].getHours() === today.getHours()
-												? 'now'
-												: ''}"
-											style="transform: rotate({weather.windDirections![
-												index
-											]}deg);min-width: {5000 / (weather.entriesLength || 1)}px; max-width: {5000 /
-												(weather.entriesLength || 1)}px;"
-											><svg class="fill-foreground" width="25px" height="25px">
-												<use xlink:href="/images/weather-icons/wi-direction-down.svg#Layer_1"></use>
-											</svg></td
-										>
-									{/if}
-								{/each}
-							</tr>
-						{/if}
-					{/await}
-				</tbody>
-			</table>
-		</div>
-	</div>
-	{#await weatherDaily then wd}
-		{@const sunrise = new Date(Number(wd.daily.sunrise.valuesInt64(selectedDayIndex)) * 1000)}
-		{@const sunset = new Date(Number(wd.daily.sunset.valuesInt64(selectedDayIndex)) * 1000)}
-		<div class="mt-6">
-			<div class="flex items-center gap-1">
-				<svg class="fill-foreground" width="28px" height="28px">
-					<use class="stroke-2" xlink:href="/images/weather-icons/wi-sunrise.svg#Layer_1"></use>
-				</svg>Sunrise: {pad(sunrise.getHours())}:{pad(sunrise.getMinutes())}
-			</div>
-			<div class="flex items-center gap-1">
-				<svg class="fill-foreground" width="28px" height="28px">
-					<use class="stroke-2" xlink:href="/images/weather-icons/wi-sunset.svg#Layer_1"></use>
-				</svg>
-				Sunset: {pad(sunset.getHours())}:{pad(sunset.getMinutes())}
-			</div>
-		</div>
-	{/await}
-	<div>
-		<div class="mt-6 flex gap-6 md:mt-12">
-			<div class="relative w-1/2">
-				{#if params.models && params.models.length > 0}
-					{@const modelValue = params.models[0]}
-					<Select.Root
-						name="model_selection"
-						type="single"
-						value={modelValue}
-						onValueChange={(val) => {
-							if (params.models && val) {
-								params.models = [val];
-							}
-						}}
-					>
-						<Select.Trigger
-							aria-label="Forecast days input"
-							class="h-12 cursor-pointer pt-6 [&_svg]:mb-3">{modelSelected?.label}</Select.Trigger
-						>
-						<Select.Content preventScroll={false} class="border-border">
-							{#each models as mo (mo.value)}
-								<Select.Item class="cursor-pointer" value={mo.value}>{mo.label}</Select.Item>
-							{/each}
-						</Select.Content>
-						<Label class="absolute top-[0.35rem] left-2 z-10 px-1 text-xs text-muted-foreground"
-							>Weather model</Label
-						>
-					</Select.Root>
-				{/if}
-			</div>
-		</div>
 	</div>
 </div>
-
-<style>
-	.now {
-		font-weight: bold;
-	}
-
-	td {
-		text-align: center;
-		font-size: 13px;
-	}
-
-	.weather-week-icon {
-		width: 100%;
-		display: flex;
-		justify-content: center;
-		align-items: center;
-		background: #0061a5;
-		margin: 5px 0;
-		border-radius: 5px;
-	}
-</style>

src/routes/weather/week/[location]/+page.ts

@@ -1,91 +1,13 @@
-import { error, redirect } from '@sveltejs/kit';
+import { resolveLocationFromRoute } from '$lib/utils/location';
-
-import { type GeoLocation, storedLocation } from '$lib/stores/settings';
-
-import { geoLocationNameToRoute } from '$lib/utils/meteo';
 
 import type { PageLoad } from './$types';
 
-export const prerender = true;
-
 export const load: PageLoad = async (event) => {
-	const urlLocation = event.params.location;
+	const location = await resolveLocationFromRoute({
-	let urlLocationSplit, urlLocationName, urlLocationId;
+		urlLocation: event.params.location,
+		routePrefix: '/weather/week/',
+		event
+	});
 
-	if (urlLocation.includes('_')) {
+	return { location };
-		urlLocationSplit = urlLocation.split('_');
-		urlLocationName = urlLocationSplit[0];
-		urlLocationId = urlLocationSplit[1];
-	} else if (/^\d+$/.test(urlLocation)) {
-		// only numbers in location, must be geonames id
-		urlLocationName = '';
-		urlLocationId = urlLocation;
-	} else if (/^[a-zA-Z]/.test(urlLocation)) {
-		// only letters in location, must be geonames query
-		urlLocationName = urlLocation;
-		urlLocationId = undefined;
-	}
-
-	let location: GeoLocation;
-
-	// lat, long coordinates
-	if (urlLocation.includes('N') && urlLocation.includes('E')) {
-		urlLocationSplit = urlLocation.split(/N|E/);
-		const latitude = parseFloat(urlLocationSplit[0]);
-		const longitude = parseFloat(urlLocationSplit[1]);
-
-		location = {
-			id: 0,
-			name: `${latitude}N° ${longitude}E°`,
-			latitude: latitude,
-			longitude: longitude,
-			elevation: 0,
-			feature_code: 'COORD',
-			country_code: undefined,
-			admin1_id: undefined,
-			admin3_id: undefined,
-			admin4_id: undefined,
-			timezone: 'UTC',
-			population: undefined,
-			postcodes: undefined,
-			country_id: undefined,
-			country: undefined,
-			admin1: undefined,
-			admin3: undefined,
-			admin4: undefined
-		};
-	} else {
-		if (urlLocationId) {
-			const res = await event.fetch(
-				`https://geocoding-api.open-meteo.com/v1/get?id=${urlLocationId}`
-			);
-			location = await res.json();
-		} else {
-			const res = await event.fetch(
-				`https://geocoding-api.open-meteo.com/v1/search?name=${urlLocationName}&count=1&language=en&format=json`
-			);
-			const geocodingResponse = await res.json();
-			if (geocodingResponse.results) {
-				location = geocodingResponse.results[0];
-			} else {
-				error(404, 'Location not found');
-			}
-		}
-
-		const locationRoute = geoLocationNameToRoute(location.name || '');
-
-		if (location.population && location.population > 543000) {
-			// 1000 biggest cities
-			if (event.url.pathname !== `/weather/week/${locationRoute}`) {
-				throw redirect(303, `/weather/week/${locationRoute}`);
-			}
-		} else {
-			if (event.url.pathname !== `/weather/week/${locationRoute + '_' + location.id}`) {
-				throw redirect(303, `/weather/week/${locationRoute + '_' + location.id}`);
-			}
-		}
-	}
-
-	storedLocation.set(location);
-	return { location: location };
 };

src/routes/weather/week/[location]/DailyCards.svelte

@@ -0,0 +1,178 @@
+<script lang="ts">
+	import { fade } from 'svelte/transition';
+
+	import { formatZoned, getRelativeDayLabel, isSameDayInZone } from '$lib/utils/date';
+
+	import { getTempStyle } from '../../utils/colors';
+	import weatherCodes from '../../utils/weather-codes';
+	import { type FetchedDaily, type WeatherUnits, getWindArrowRotation } from './types';
+
+	interface Props {
+		daily: FetchedDaily | null;
+		selectedDay: Date;
+		units: WeatherUnits;
+		onSelectDay: (date: Date, index: number) => void;
+	}
+
+	let { daily, selectedDay, units, onSelectDay }: Props = $props();
+
+	function getDaylightSeconds(index: number): number {
+		if (!daily) return 0;
+		const sunriseTs = daily.daily.sunrise[index];
+		const sunsetTs = daily.daily.sunset[index];
+		if (!sunriseTs || !sunsetTs) return 0;
+		return Math.max(0, sunsetTs - sunriseTs);
+	}
+
+	function getSunshinePercent(sunshineSeconds: number | null, daylightSeconds: number): number {
+		if (!sunshineSeconds || daylightSeconds <= 0) return 0;
+		return Math.min(100, (sunshineSeconds / daylightSeconds) * 100);
+	}
+
+	function getSunshineColor(sunshineSeconds: number | null, daylightSeconds: number): string {
+		if (daylightSeconds <= 0) return '#d1d5db';
+		const ratio = (sunshineSeconds ?? 0) / daylightSeconds;
+		if (ratio >= 0.7) return '#f59e0b';
+		if (ratio >= 0.45) return '#fbbf24';
+		if (ratio >= 0.2) return '#fcd34d';
+		return '#d1d5db';
+	}
+</script>
+
+<div in:fade out:fade class="mb-6 min-h-[260px]">
+	<div class="flex gap-1 overflow-x-auto pb-1" style="scrollbar-width: thin">
+		{#if daily}
+			{#each daily.dailyDates as time, index (index)}
+				{@const selected = isSameDayInZone(time, selectedDay, daily.timezone)}
+				{@const tempMax = daily.daily.temperature_2m_max[index]}
+				{@const tempMin = daily.daily.temperature_2m_min[index]}
+				{@const wCode = daily.daily.weather_code[index]}
+				{@const sunDuration = daily.daily.sunshine_duration[index]}
+				{@const daylightSec = getDaylightSeconds(index)}
+				{@const sunColor = getSunshineColor(sunDuration, daylightSec)}
+				{@const sunPct = getSunshinePercent(sunDuration, daylightSec)}
+				{@const precipSum = daily.daily.precipitation_sum[index]}
+				{@const windMax = daily.daily.windspeed_10m_max[index]}
+				{@const gustMax = daily.daily.windgusts_10m_max[index]}
+				{@const windDir = daily.daily.winddirection_10m_dominant[index]}
+				{@const unit = String(units.temperature_unit)}
+				{@const maxStyle = getTempStyle(tempMax, unit)}
+				{@const minStyle = getTempStyle(tempMin, unit)}
+				{#if tempMax != null && !isNaN(tempMax)}
+					<button
+						class="group flex min-w-[108px] max-w-[170px] flex-1 cursor-pointer flex-col items-center gap-0.5 rounded-xl border-2 px-1.5 py-2 transition-all duration-200
+							{selected
+							? 'scale-[1.03] border-primary bg-accent shadow-md'
+							: 'border-transparent bg-card hover:bg-accent'}"
+						onclick={() => onSelectDay(time, index)}
+					>
+						<!-- Day label -->
+						<span class="text-sm font-bold tracking-wide">
+							{formatZoned(time, daily.timezone, 'EEE').toUpperCase()}
+						</span>
+						<span class="text-[11px] text-muted-foreground">
+							{getRelativeDayLabel(time, daily.timezone)}
+						</span>
+
+						<!-- Weather icon -->
+						<div
+							class="my-1 flex w-full items-center justify-center rounded-lg py-1.5"
+							style="background: {sunColor}22"
+						>
+							<svg class="fill-foreground" width="48px" height="48px">
+								<use
+									xlink:href="/images/weather-icons/wi-day-{weatherCodes[
+										wCode as keyof typeof weatherCodes
+									] ?? 'clear'}.svg#Layer_1"
+								></use>
+							</svg>
+						</div>
+
+						<!-- Temperature max/min -->
+						<div class="flex w-full flex-col">
+							<div
+								class="w-full rounded-t px-1 py-0.5 text-center text-[15px] font-bold"
+								style="background-color: {maxStyle.bg}; color: {maxStyle.fg}"
+							>
+								{tempMax.toFixed(0)}°
+							</div>
+							<div
+								class="w-full rounded-b px-1 py-0.5 text-center text-xs font-semibold"
+								style="background-color: {minStyle.bg}; color: {minStyle.fg}"
+							>
+								{tempMin.toFixed(0)}°
+							</div>
+						</div>
+
+						<!-- Details section -->
+						<div class="mt-1 flex w-full flex-col items-center gap-0.5">
+							<!-- Sunshine bar -->
+							<div class="flex w-full items-center gap-1 px-1">
+								<svg class="shrink-0" width="14px" height="14px" style="fill: {sunColor}">
+									<use xlink:href="/images/weather-icons/wi-day-sunny.svg#Layer_1"></use>
+								</svg>
+								<div class="h-1.5 flex-1 overflow-hidden rounded-full bg-muted">
+									<div
+										class="h-full rounded-full transition-all"
+										style="width: {sunPct}%; background-color: {sunColor}"
+									></div>
+								</div>
+								<span class="text-[10px] font-medium text-muted-foreground">
+									{Number((sunDuration ?? 0) / 3600).toFixed(0)}h
+								</span>
+							</div>
+
+							<!-- Precipitation -->
+							<div class="flex items-center gap-1 text-[11px]">
+								<svg class="fill-foreground shrink-0" width="14px" height="14px">
+									<use xlink:href="/images/weather-icons/wi-raindrop.svg#Layer_1"></use>
+								</svg>
+								<span>
+									{Number(precipSum ?? 0).toFixed(
+										precipSum >= 10 ? 0 : 1
+									)}{units.precipitation_unit === 'mm' ? ' mm' : "'"}
+								</span>
+							</div>
+
+							<!-- Wind with direction -->
+							<div class="flex items-center gap-1 text-[11px]">
+								{#if windDir != null && !isNaN(windDir)}
+									<div
+										class="inline-flex shrink-0"
+										style="transform: {getWindArrowRotation(windDir)}"
+									>
+										<svg class="fill-foreground" width="20px" height="20px">
+											<use xlink:href="/images/weather-icons/wi-direction-down.svg#Layer_1"></use>
+										</svg>
+									</div>
+								{:else}
+									<svg class="fill-foreground shrink-0" width="20px" height="20px">
+										<use xlink:href="/images/weather-icons/wi-strong-wind.svg#Layer_1"></use>
+									</svg>
+								{/if}
+								<span>
+									{windMax?.toFixed(0) ?? '-'}<span class="text-muted-foreground"
+										>-{gustMax?.toFixed(0) ?? '-'}</span
+									>
+								</span>
+							</div>
+						</div>
+					</button>
+				{/if}
+			{/each}
+		{/if}
+	</div>
+</div>
+
+<style>
+	@media (max-width: 768px) {
+		button {
+			min-width: 92px !important;
+		}
+
+		button :global(svg[width='48px']) {
+			width: 40px;
+			height: 40px;
+		}
+	}
+</style>

src/routes/weather/week/[location]/HourlyTable.svelte

@@ -0,0 +1,517 @@
+<script lang="ts">
+	import { formatUtcOffset, formatZoned, getZonedHour, isSameDayInZone } from '$lib/utils/date';
+
+	import { getTempStyle } from '../../utils/colors';
+	import { getWeatherIconName } from '../../utils/weather-codes';
+	import {
+		type FetchedDaily,
+		type FetchedHourly,
+		type WeatherUnits,
+		getPrecipUnit,
+		getTempUnit,
+		getWindArrowRotation,
+		getWindUnit
+	} from './types';
+
+	interface Props {
+		data: FetchedHourly;
+		daily: FetchedDaily;
+		selectedDay: Date;
+		units: WeatherUnits;
+		locationName: string;
+	}
+
+	let { data, daily, selectedDay, units, locationName }: Props = $props();
+
+	let hourlyInterval = $state<1 | 3>(3);
+
+	const today = new Date();
+	const tempUnit = $derived(getTempUnit(units));
+	const windUnit = $derived(getWindUnit(units));
+	const precipUnit = $derived(getPrecipUnit(units));
+	let sunTimes = $derived(getSunTimes());
+
+	const PRECIP_MAX_MM = 10;
+	const PRECIP_MAX_INCH = 0.4;
+
+	let precipAbsMax = $derived(units.precipitation_unit === 'mm' ? PRECIP_MAX_MM : PRECIP_MAX_INCH);
+
+	function getSelectedDayDailyIndex(): number {
+		return findDailyIndex(selectedDay);
+	}
+
+	function getSunTimes(): { sunrise: Date; sunset: Date } | null {
+		const di = getSelectedDayDailyIndex();
+		if (di < 0) return null;
+		const rise = daily.daily.sunrise[di];
+		const set = daily.daily.sunset[di];
+		if (!rise || !set) return null;
+		return {
+			sunrise: new Date(rise * 1000),
+			sunset: new Date(set * 1000)
+		};
+	}
+
+	function timeToFraction(date: Date): number {
+		const tz = data.timezone;
+		const hour = getZonedHour(date, tz);
+		const minutes = parseInt(formatZoned(date, tz, 'mm'), 10);
+		const totalMinutes = hour * 60 + minutes;
+
+		const firstHour = getZonedHour(cellData[0].date, tz);
+		const firstMin = firstHour * 60;
+
+		const step = is3h ? 3 : 1;
+		const lastHour = getZonedHour(cellData[cellData.length - 1].date, tz);
+		const lastMin = lastHour * 60 + step * 60;
+
+		const range = lastMin - firstMin;
+		if (range <= 0) return 0;
+		return Math.max(0, Math.min(1, (totalMinutes - firstMin) / range));
+	}
+
+	function formatTime(date: Date): string {
+		return formatZoned(date, data.timezone, 'HH:mm');
+	}
+
+	let timezoneLabel = $derived(formatUtcOffset(data.utc_offset_seconds));
+
+	function findDailyIndex(date: Date): number {
+		return daily.dailyDates.findIndex((dd) => isSameDayInZone(dd, date, data.timezone));
+	}
+
+	function isDaytime(hourDate: Date): boolean {
+		const di = findDailyIndex(hourDate);
+		if (di < 0) return true;
+		const sunrise = daily.daily.sunrise[di];
+		const sunset = daily.daily.sunset[di];
+		if (!sunrise || !sunset) return true;
+		const ts = Math.floor(hourDate.getTime() / 1000);
+		return ts >= sunrise && ts < sunset;
+	}
+
+	function getDayIndices(dates: Date[], day: Date): number[] {
+		const tz = data.timezone;
+		return dates.reduce<number[]>((acc, d, i) => {
+			if (isSameDayInZone(d, day, tz) && (hourlyInterval === 1 || getZonedHour(d, tz) % 3 === 0)) {
+				acc.push(i);
+			}
+			return acc;
+		}, []);
+	}
+
+	function getPrecipBarHeight(val: number): number {
+		if (!val || val <= 0) return 0;
+		return Math.min(100, (val / precipAbsMax) * 100);
+	}
+
+	function getPrecipProbBg(prob: number): string {
+		if (!prob || prob <= 0) return 'transparent';
+		return `rgba(30, 100, 220, ${(Math.round(prob / 10) / 100) * 10 * 0.45})`;
+	}
+
+	function getCloudOpacity(cover: number): number {
+		return Math.min(0.55, (cover ?? 0) / 150);
+	}
+
+	function getHumidityBg(hum: number): string {
+		return `rgba(0, 180, 200, ${hum ** 3.5 / 10 ** 7.8})`;
+	}
+
+	function formatPrecipTooltip(precip: number | null, prob: number | null): string {
+		const parts: string[] = [];
+		if (prob != null && prob > 0) parts.push(`Probability: ${prob}%`);
+		if (precip != null && precip > 0) parts.push(`Amount: ${precip.toFixed(1)} ${precipUnit}`);
+		return parts.join('\n');
+	}
+
+	function formatTemp(temp: number | null): string {
+		return temp != null ? `${temp.toFixed(0)}°` : '-';
+	}
+
+	function formatValue(val: number | null): string {
+		return val != null ? val.toFixed(0) : '-';
+	}
+
+	let dayIdx = $derived(getDayIndices(data.hourlyDates, selectedDay));
+	let is3h = $derived(hourlyInterval === 3);
+	let daytimeFlags = $derived(dayIdx.map((idx) => isDaytime(data.hourlyDates[idx])));
+
+	let cellData = $derived(
+		dayIdx.map((idx, i) => {
+			const date = data.hourlyDates[idx];
+			const tz = data.timezone;
+			const isNow =
+				formatZoned(date, tz, 'yyyy-MM-dd HH') === formatZoned(today, tz, 'yyyy-MM-dd HH');
+
+			return {
+				idx,
+				date,
+				isNow,
+				isDaytime: daytimeFlags[i]
+			};
+		})
+	);
+
+	let sunrisePercent = $derived(
+		sunTimes && cellData.length > 0 ? timeToFraction(sunTimes.sunrise) * 100 : null
+	);
+	let sunsetPercent = $derived(
+		sunTimes && cellData.length > 0 ? timeToFraction(sunTimes.sunset) * 100 : null
+	);
+</script>
+
+{#snippet weatherIcon(name: string, size: number = 16)}
+	<svg class="inline-block fill-foreground" width={size} height={size}>
+		<use xlink:href="/images/weather-icons/{name}.svg#Layer_1"></use>
+	</svg>
+{/snippet}
+
+{#snippet rowHeader(iconName?: string, unit?: string, label?: string)}
+	<th class="hdr" scope="row">
+		<div class="flex flex-col items-center leading-tight">
+			{#if iconName}
+				{@render weatherIcon(iconName)}
+			{/if}
+			{#if label}
+				<span class="text-[11px] font-semibold text-muted-foreground">{label}</span>
+			{/if}
+			{#if unit}
+				<span class="text-[10px] font-semibold text-muted-foreground">{unit}</span>
+			{/if}
+		</div>
+	</th>
+{/snippet}
+
+<!-- Header -->
+<div class="mb-2 flex flex-wrap items-center justify-between gap-2">
+	<h3 class="text-lg font-bold">
+		{formatZoned(selectedDay, data.timezone, 'EEEE')} – Hourly
+		<span class="ml-1 text-xs font-normal text-muted-foreground">({timezoneLabel})</span>
+	</h3>
+	<div class="flex items-center gap-1.5 text-[13px] font-semibold">
+		<span class="select-none text-muted-foreground">3h</span>
+		<button
+			class="relative h-6 w-11 cursor-pointer rounded-full border transition-colors
+				{hourlyInterval === 1 ? 'border-primary/40 bg-primary' : 'border-border bg-muted'}"
+			onclick={() => (hourlyInterval = hourlyInterval === 1 ? 3 : 1)}
+			title="Toggle between 1-hour and 3-hour intervals"
+		>
+			<span
+				class="absolute top-[3px] size-[18px] rounded-full bg-white shadow-sm transition-[left] duration-200
+					{hourlyInterval === 1 ? 'left-[22px]' : 'left-[3px]'}"
+			></span>
+		</button>
+		<span class="select-none text-muted-foreground">1h</span>
+	</div>
+</div>
+
+{#if cellData.length > 0}
+	{@const hourly = data.hourly}
+	{@const iconPx = is3h ? 40 : 26}
+	<div class="overflow-hidden rounded-lg border border-border">
+		<table class="w-full table-fixed border-collapse whitespace-nowrap">
+			<caption class="sr-only">Hourly weather details for {locationName}</caption>
+			<colgroup>
+				<col class="w-14 md:w-16" />
+				{#each cellData as _ (_.idx)}
+					<col />
+				{/each}
+			</colgroup>
+			<tbody>
+				<!-- Time + Daylight bar (merged) -->
+				<tr class="!border-t-0">
+					<th class="hdr" scope="row">
+						<span class="text-[10px] font-semibold text-muted-foreground">{timezoneLabel}</span>
+					</th>
+					<td colspan={cellData.length} class="relative h-10 overflow-visible p-0">
+						<!-- Daylight background -->
+						{#if sunTimes && sunrisePercent != null && sunsetPercent != null}
+							<div
+								class="absolute inset-y-0 left-0 bg-indigo-950/10 dark:bg-indigo-950/30"
+								style="width:{sunrisePercent}%"
+							></div>
+							<div
+								class="absolute inset-y-0 bg-amber-400/15 dark:bg-amber-400/10"
+								style="left:{sunrisePercent}%;width:{sunsetPercent - sunrisePercent}%"
+							></div>
+							<div
+								class="absolute inset-y-0 right-0 bg-indigo-950/10 dark:bg-indigo-950/30"
+								style="width:{100 - sunsetPercent}%"
+							></div>
+							<!-- Sunrise marker + label -->
+							<div class="absolute inset-y-0 w-px bg-amber-500/70" style="left:{sunrisePercent}%">
+								<span
+									class="absolute bottom-0.5 left-1 whitespace-nowrap text-[10px] font-semibold leading-none text-amber-700 dark:text-amber-300"
+								>
+									<svg
+										class="fill-foreground inline-block"
+										width="12px"
+										height="12px"
+										aria-hidden="true"
+									>
+										<use class="stroke-2" xlink:href="/images/weather-icons/wi-sunrise.svg#Layer_1"
+										></use>
+									</svg>
+									<span class="align-middle">{formatTime(sunTimes.sunrise)}</span>
+								</span>
+							</div>
+							<!-- Sunset marker + label -->
+							<div class="absolute inset-y-0 w-px bg-indigo-400/70" style="left:{sunsetPercent}%">
+								<span
+									class="absolute bottom-0.5 right-1 whitespace-nowrap text-[10px] font-semibold leading-none text-indigo-600 dark:text-indigo-300 inline-flex items-center gap-1"
+								>
+									<svg
+										class="fill-foreground inline-block"
+										width="12px"
+										height="12px"
+										aria-hidden="true"
+									>
+										<use class="stroke-2" xlink:href="/images/weather-icons/wi-sunset.svg#Layer_1"
+										></use>
+									</svg>
+									<span class="align-middle">{formatTime(sunTimes.sunset)}</span>
+								</span>
+							</div>
+						{/if}
+						<!-- Hour labels -->
+						{#each cellData as cell, i (cell.idx)}
+							{@const leftPct = (i / cellData.length) * 100}
+							{@const widthPct = 100 / cellData.length}
+							<span
+								class="absolute top-0 flex items-start pt-1 font-bold pl-0.5 text-sm
+								{cell.isNow ? 'text-destructive' : ''}"
+								style="left:{leftPct}%;width:{widthPct}%"
+							>
+								{#if is3h}
+									{formatZoned(cell.date, data.timezone, 'HH')}
+								{:else}
+									<span class="inline-flex items-baseline gap-1">
+										<span class="text-[11px] font-semibold"
+											>{formatZoned(cell.date, data.timezone, 'HH')}</span
+										>
+										<sup
+											class="text-[9px] font-semibold text-muted-foreground leading-none align-baseline"
+											>00</sup
+										>
+									</span>
+								{/if}
+							</span>
+						{/each}
+					</td>
+				</tr>
+
+				<!-- Weather Icons -->
+				<tr>
+					{@render rowHeader('wi-day-cloudy')}
+					{#each cellData as cell, i (cell.idx)}
+						{@const wCode = hourly.weather_code[cell.idx]}
+						<td
+							class="cell leading-[0] {is3h ? 'px-1 py-2.5' : 'px-0.5 py-1.5'}"
+							class:now={cell.isNow}
+							class:icon-day={cell.isDaytime}
+							class:icon-night={!cell.isDaytime}
+							class:icon-dawn={!cell.isDaytime && cellData[i + 1]?.isDaytime}
+							class:icon-dusk={cell.isDaytime && cellData[i + 1] && !cellData[i + 1].isDaytime}
+						>
+							{@render weatherIcon(getWeatherIconName(wCode, cell.isDaytime), iconPx)}
+						</td>
+					{/each}
+				</tr>
+
+				<!-- Temperature -->
+				<tr>
+					{@render rowHeader('wi-thermometer', tempUnit)}
+					{#each cellData as cell (cell.idx)}
+						{@const temp = hourly.temperature_2m[cell.idx]}
+						{@const style = getTempStyle(temp, String(units.temperature_unit))}
+						<td
+							class="cell font-bold {is3h ? 'py-2.5 text-lg' : 'py-2 text-[15px]'}"
+							class:now={cell.isNow}
+							style="background-color:{style.bg};color:{style.fg}"
+						>
+							{formatTemp(temp)}
+						</td>
+					{/each}
+				</tr>
+
+				<!-- Feels Like -->
+				<tr>
+					{@render rowHeader(undefined, tempUnit, 'Feels')}
+					{#each cellData as cell (cell.idx)}
+						{@const temp = hourly.apparent_temperature[cell.idx]}
+						<td
+							class="cell text-muted-foreground {is3h ? 'py-1 text-[13px]' : 'py-0.5 text-[11px]'}"
+							class:now={cell.isNow}
+						>
+							{formatTemp(temp)}
+						</td>
+					{/each}
+				</tr>
+
+				<!-- Wind -->
+				<tr>
+					{@render rowHeader('wi-strong-wind', windUnit)}
+					{#each cellData as cell (cell.idx)}
+						{@const wind = hourly.windspeed_10m[cell.idx]}
+						{@const windDir = hourly.winddirection_10m[cell.idx]}
+						<td class="cell text-center align-middle leading-tight" class:now={cell.isNow}>
+							{#if windDir != null && !isNaN(windDir)}
+								<span
+									class="inline-block leading-[0]"
+									style="transform:{getWindArrowRotation(windDir)}"
+								>
+									{@render weatherIcon('wi-direction-down', 24)}
+								</span>
+							{/if}
+							<span class="block font-semibold {is3h ? 'mt-0.5 text-sm' : 'text-xs'}">
+								{formatValue(wind)}
+							</span>
+						</td>
+					{/each}
+				</tr>
+
+				<!-- Humidity -->
+				<tr>
+					{@render rowHeader('wi-humidity', '%')}
+					{#each cellData as cell (cell.idx)}
+						{@const hum = hourly.relative_humidity_2m[cell.idx]}
+						<td class="cell" class:now={cell.isNow} style="background:{getHumidityBg(hum ?? 0)}">
+							{formatValue(hum)}
+						</td>
+					{/each}
+				</tr>
+
+				<!-- Cloud Cover -->
+				<tr>
+					{@render rowHeader('wi-cloud', '%')}
+					{#each cellData as cell (cell.idx)}
+						{@const cloud = hourly.cloud_cover[cell.idx]}
+						<td
+							class="cell"
+							class:now={cell.isNow}
+							style="background:rgba(140,160,180,{getCloudOpacity(cloud ?? 0)})"
+						>
+							{formatValue(cloud)}
+						</td>
+					{/each}
+				</tr>
+
+				<!-- Precipitation -->
+				<tr>
+					{@render rowHeader('wi-raindrop', precipUnit)}
+					{#each cellData as cell (cell.idx)}
+						{@const precip = hourly.precipitation[cell.idx]}
+						{@const prob = hourly.precipitation_probability[cell.idx]}
+						<td
+							class="precip-cell {is3h ? 'h-14' : 'h-11'}"
+							class:now={cell.isNow}
+							style="background:{getPrecipProbBg(prob ?? 0)}"
+							title={formatPrecipTooltip(precip, prob)}
+						>
+							{#if precip > 0}
+								<div class="precip-bar" style="height:{getPrecipBarHeight(precip)}%"></div>
+								<span class="precip-label {is3h ? 'text-[13px]' : 'text-[10px]'}">
+									{precip.toFixed(1)}
+								</span>
+							{/if}
+						</td>
+					{/each}
+				</tr>
+			</tbody>
+		</table>
+	</div>
+{/if}
+
+<style>
+	tr {
+		border-top: 1px solid hsl(var(--border));
+	}
+
+	/* ── Base cell ──────────────────────────────────────────── */
+	.cell {
+		padding: 6px 2px;
+		text-align: center;
+		font-size: 13px;
+		font-weight: 500;
+		border-right: 1px solid hsl(var(--border) / 0.2);
+		overflow: hidden;
+	}
+
+	.cell:last-child {
+		border-right: none;
+	}
+
+	.cell.now {
+		font-weight: 700;
+		box-shadow: inset 0 0 0 2px hsl(var(--destructive) / 0.45);
+	}
+
+	/* ── Row header ─────────────────────────────────────────── */
+	.hdr {
+		padding: 4px;
+		text-align: center;
+		font-weight: 600;
+		font-size: 11px;
+		background: hsl(var(--background));
+		border-right: 2px solid hsl(var(--border));
+		white-space: nowrap;
+		overflow: hidden;
+	}
+
+	/* ── Precipitation ──────────────────────────────────────── */
+	.precip-cell {
+		position: relative;
+		padding: 0;
+		text-align: center;
+		overflow: hidden;
+		border-right: 1px solid hsl(var(--border) / 0.2);
+	}
+
+	.precip-cell:last-child {
+		border-right: none;
+	}
+
+	.precip-cell.now {
+		box-shadow: inset 0 0 0 2px hsl(var(--destructive) / 0.45);
+	}
+
+	.precip-bar {
+		position: absolute;
+		bottom: 0;
+		left: 15%;
+		right: 15%;
+		min-height: 3px;
+		border-radius: 2px 2px 0 0;
+		background: linear-gradient(to top, rgba(30, 120, 220, 0.5), rgba(30, 120, 220, 0.9));
+		pointer-events: none;
+	}
+
+	.precip-label {
+		position: relative;
+		z-index: 1;
+		display: flex;
+		align-items: center;
+		justify-content: center;
+		height: 100%;
+		font-weight: 700;
+		color: rgba(20, 60, 160, 0.9);
+		pointer-events: none;
+	}
+
+	:global(.dark) .precip-label {
+		color: rgba(120, 180, 255, 0.95);
+	}
+
+	/* ── Responsive ─────────────────────────────────────────── */
+	@media (max-width: 768px) {
+		.hdr {
+			padding: 3px 2px;
+			font-size: 10px;
+		}
+		.cell {
+			font-size: 11px;
+			padding: 4px 1px;
+		}
+	}
+</style>

src/routes/weather/week/[location]/MeteogramCharts.svelte

@@ -0,0 +1,618 @@
+<script lang="ts">
+	import { fade } from 'svelte/transition';
+
+	import * as echarts from 'echarts';
+
+	import { formatZoned, getRelativeDayLabel } from '$lib/utils/date';
+	import { buildCurrentTimeSeries, buildDaylightSeries, getThemeColors } from '$lib/utils/echarts';
+
+	import { ChartContainer, ChartToolbar, EChart } from '$lib/components/charts';
+	import '$lib/components/charts/echarts.css';
+
+	import { getColor } from '../../utils/colors';
+	import {
+		type FetchedHourly,
+		type WeatherUnits,
+		getPrecipUnit,
+		getTempUnit,
+		getWindDirectionLabel,
+		getWindUnit
+	} from './types';
+
+	interface Props {
+		data: FetchedHourly;
+		selectedDay: Date;
+		units: WeatherUnits;
+		loading: boolean;
+		onResetZoom?: () => void;
+	}
+
+	let { data, selectedDay, units, loading, onResetZoom }: Props = $props();
+
+	const CHART_GROUP = 'week-meteogram';
+	const MS_PER_DAY = 24 * 3600 * 1000;
+
+	let showCharts = $state(false);
+	let chartComponents: EChart[] = $state([]);
+	let chartInstances: echarts.ECharts[] = $state([]);
+	let chartOptions: Array<Record<string, unknown>> = $state([]);
+
+	export function scrollToDay(day: Date): void {
+		if (chartInstances.length === 0 || !data) return;
+
+		const tz = data.timezone;
+		const targetDayStr = formatZoned(day, tz, 'yyyy-MM-dd');
+		const firstHourIdx = data.hourlyDates.findIndex(
+			(d) => formatZoned(d, tz, 'yyyy-MM-dd') === targetDayStr
+		);
+
+		if (firstHourIdx === -1) return;
+
+		const dayStart = data.timestamps[firstHourIdx];
+		const dayEnd = dayStart + MS_PER_DAY;
+		const timestamps = data.timestamps;
+		const rangeStart = timestamps[0];
+		const rangeEnd = timestamps[timestamps.length - 1];
+		const totalRange = rangeEnd - rangeStart;
+
+		if (totalRange <= 0) return;
+
+		const startPct = Math.max(0, ((dayStart - rangeStart) / totalRange) * 100);
+		const endPct = Math.min(100, ((dayEnd - rangeStart) / totalRange) * 100);
+
+		for (const chart of chartInstances) {
+			if (chart && !chart.isDisposed()) {
+				chart.dispatchAction({ type: 'dataZoom', start: startPct, end: endPct });
+			}
+		}
+	}
+
+	function resetZoom(): void {
+		for (const chart of chartInstances) {
+			if (chart && !chart.isDisposed()) {
+				chart.dispatchAction({ type: 'dataZoom', start: 0, end: 100 });
+			}
+		}
+		onResetZoom?.();
+	}
+
+	function handleChartReady(chart: echarts.ECharts): void {
+		chart.group = CHART_GROUP;
+		chartInstances = [...chartInstances, chart];
+		if (chartInstances.length === 3) {
+			echarts.connect(CHART_GROUP);
+			requestAnimationFrame(() => scrollToDay(selectedDay));
+		}
+	}
+
+	$effect(() => {
+		// Reset chart instances when data changes
+		if (data) {
+			chartInstances = [];
+			chartComponents = [];
+		}
+	});
+
+	$effect(() => {
+		if (!data) return;
+
+		const { hourly, timestamps, markAreas } = data;
+		const colors = getThemeColors();
+		const tempUnit = getTempUnit(units);
+		const precipUnit = getPrecipUnit(units);
+		const windUnit = getWindUnit(units);
+
+		const temps = hourly.temperature_2m;
+		const precip = hourly.precipitation;
+		const precipProb = hourly.precipitation_probability;
+		const cloudCov = hourly.cloud_cover;
+		const windSpeed = hourly.windspeed_10m;
+		const humidity = hourly.relative_humidity_2m;
+
+		const validTemps = temps.filter((t: number) => t !== null && !isNaN(t));
+		const minTemp = Math.min(...validTemps);
+		const maxTemp = Math.max(...validTemps);
+
+		const tempData = temps.map((v: number, i: number) => [timestamps[i], v]);
+		const cloudData = cloudCov.map((v: number, i: number) => [timestamps[i], v]);
+		const precipData = precip.map((v: number, i: number) => [timestamps[i], v]);
+		const precipProbData = precipProb.map((v: number, i: number) => [timestamps[i], v]);
+		const windData = windSpeed.map((v: number, i: number) => [timestamps[i], v]);
+		const humidityData = humidity.map((v: number, i: number) => [timestamps[i], v]);
+
+		const annotations = (): Array<Record<string, unknown>> => {
+			const series: Array<Record<string, unknown>> = [];
+			series.push(buildCurrentTimeSeries());
+			const dl = buildDaylightSeries({ markAreas });
+			if (dl) series.push(dl);
+			return series;
+		};
+
+		const timeXAxis = (showLabel: boolean): Record<string, unknown> => ({
+			type: 'time',
+			splitLine: { show: false },
+			axisLine: { lineStyle: { color: colors.axisLine } },
+			axisLabel: {
+				color: colors.text,
+				hideOverlap: true,
+				show: showLabel,
+				formatter: (value: number) => formatZoned(new Date(value), data.timezone, 'HH:mm')
+			},
+			axisTick: { lineStyle: { color: colors.axisLine } }
+		});
+
+		const insideZoom = (): Record<string, unknown> => ({
+			type: 'inside',
+			xAxisIndex: 0,
+			filterMode: 'none',
+			zoomOnMouseWheel: true,
+			moveOnMouseMove: true,
+			moveOnMouseWheel: false
+		});
+
+		const sliderZoom = (): Record<string, unknown> => ({
+			type: 'slider',
+			xAxisIndex: 0,
+			filterMode: 'none',
+			height: 20,
+			bottom: 4,
+			borderColor: colors.axisLine,
+			fillerColor: 'rgba(100, 140, 200, 0.2)',
+			handleStyle: { color: colors.text },
+			textStyle: { color: colors.text, fontSize: 10 },
+			dataBackground: {
+				lineStyle: { color: colors.axisLine },
+				areaStyle: { color: colors.splitLine }
+			},
+			selectedDataBackground: {
+				lineStyle: { color: colors.axisLine },
+				areaStyle: { color: 'rgba(100, 140, 200, 0.15)' }
+			}
+		});
+
+		const tooltipBase = (
+			formatter: (
+				params: Array<{
+					axisValue: number;
+					seriesName: string;
+					marker: string;
+					value: number | number[] | null;
+				}>
+			) => string
+		): Record<string, unknown> => ({
+			trigger: 'axis',
+			axisPointer: {
+				type: 'cross',
+				animation: false,
+				label: {
+					backgroundColor: colors.tooltipBg,
+					color: colors.text,
+					borderColor: colors.tooltipBorder,
+					borderWidth: 1,
+					formatter: (params: { axisDimension: string; value: number }) => {
+						if (params.axisDimension === 'x') {
+							return formatZoned(new Date(params.value), data.timezone, 'EEE d MMM HH:mm');
+						}
+						return params.value.toFixed(1);
+					}
+				}
+			},
+			backgroundColor: colors.tooltipBg,
+			borderColor: colors.tooltipBorder,
+			textStyle: { color: colors.text },
+			formatter
+		});
+
+		const formatDate = (ts: number): string => {
+			const date = new Date(ts);
+			const dateStr = formatZoned(date, data.timezone, 'EEE d MMM HH:mm');
+			return `<b>${dateStr}</b><br/>`;
+		};
+
+		const isAnnotation = (name: string): boolean => name === 'Daylight' || name === 'Current Time';
+
+		const tempOption: Record<string, unknown> = {
+			title: {
+				text: 'Temperature & Cloud Cover',
+				left: 'left',
+				textStyle: { fontWeight: 'normal', fontSize: 16, color: colors.text }
+			},
+			tooltip: tooltipBase((params) => {
+				if (!params?.length) return '';
+				let html = formatDate(params[0].axisValue as number);
+				for (const item of params) {
+					const name = item.seriesName as string;
+					if (isAnnotation(name)) continue;
+					const val = (item.value as [number, number])?.[1];
+					if (val == null) continue;
+					if (name === 'Temperature')
+						html += `${item.marker} ${name}: <b>${val.toFixed(1)} ${tempUnit}</b><br/>`;
+					else if (name === 'Cloud Cover')
+						html += `${item.marker} ${name}: <b>${val.toFixed(0)}%</b><br/>`;
+				}
+				return html;
+			}),
+			legend: {
+				show: true,
+				bottom: 0,
+				textStyle: { color: colors.text },
+				data: ['Temperature', 'Cloud Cover']
+			},
+			grid: { left: 60, right: 60, top: 50, bottom: 40 },
+			dataZoom: [insideZoom()],
+			xAxis: timeXAxis(false),
+			yAxis: [
+				{
+					type: 'value',
+					name: tempUnit,
+					nameTextStyle: { color: colors.text },
+					axisLine: { show: false },
+					axisLabel: { color: colors.text },
+					splitLine: { lineStyle: { color: colors.splitLine } }
+				},
+				{ type: 'value', min: 0, max: 250, inverse: true, show: false }
+			],
+			series: [
+				{
+					name: 'Temperature',
+					type: 'line',
+					data: tempData,
+					smooth: true,
+					showSymbol: false,
+					lineStyle: { width: 3, color: '#ef6c00' },
+					itemStyle: { color: '#ef6c00' },
+					areaStyle: {
+						color: new echarts.graphic.LinearGradient(0, 0, 0, 1, [
+							{
+								offset: 0,
+								color: getColor(maxTemp, String(units.temperature_unit)) + '88'
+							},
+							{
+								offset: 0.5,
+								color: getColor((maxTemp + minTemp) / 2, String(units.temperature_unit)) + '44'
+							},
+							{
+								offset: 1,
+								color: getColor(minTemp, String(units.temperature_unit)) + '08'
+							}
+						])
+					},
+					z: 5
+				},
+				{
+					name: 'Cloud Cover',
+					type: 'line',
+					data: cloudData,
+					smooth: true,
+					showSymbol: false,
+					yAxisIndex: 1,
+					lineStyle: { width: 0 },
+					itemStyle: { color: colors.text },
+					areaStyle: { color: 'rgba(150, 150, 150, 0.25)', origin: 'start' },
+					z: 1,
+					silent: true
+				},
+				...annotations()
+			],
+			textStyle: { color: colors.text }
+		};
+
+		const precipOption: Record<string, unknown> = {
+			title: {
+				text: 'Precipitation & Probability',
+				left: 'left',
+				textStyle: { fontWeight: 'normal', fontSize: 16, color: colors.text }
+			},
+			tooltip: tooltipBase((params) => {
+				if (!params?.length) return '';
+				let html = formatDate(params[0].axisValue as number);
+				for (const item of params) {
+					const name = item.seriesName as string;
+					if (isAnnotation(name)) continue;
+					const val = (item.value as [number, number])?.[1];
+					if (val == null) continue;
+					if (name === 'Precipitation')
+						html += `${item.marker} ${name}: <b>${val.toFixed(1)} ${precipUnit}</b><br/>`;
+					else if (name === 'Precip. Probability')
+						html += `${item.marker} ${name}: <b>${val.toFixed(0)}%</b><br/>`;
+				}
+				return html;
+			}),
+			legend: {
+				show: true,
+				bottom: 0,
+				textStyle: { color: colors.text },
+				data: ['Precipitation', 'Precip. Probability']
+			},
+			grid: { left: 60, right: 60, top: 50, bottom: 40 },
+			dataZoom: [insideZoom()],
+			xAxis: timeXAxis(false),
+			yAxis: [
+				{
+					type: 'value',
+					name: precipUnit,
+					min: 0,
+					nameTextStyle: { color: colors.text },
+					axisLine: { show: false },
+					axisLabel: { color: colors.text },
+					splitLine: { lineStyle: { color: colors.splitLine } }
+				},
+				{
+					type: 'value',
+					name: '%',
+					min: 0,
+					max: 100,
+					nameTextStyle: { color: colors.text },
+					axisLine: { show: false },
+					axisLabel: { color: colors.text },
+					splitLine: { show: false }
+				}
+			],
+			series: [
+				{
+					name: 'Precipitation',
+					type: 'bar',
+					data: precipData,
+					barMaxWidth: 8,
+					itemStyle: {
+						color: new echarts.graphic.LinearGradient(0, 0, 0, 1, [
+							{ offset: 0, color: 'rgba(30, 136, 229, 0.9)' },
+							{ offset: 1, color: 'rgba(30, 136, 229, 0.4)' }
+						])
+					},
+					yAxisIndex: 0,
+					z: 5
+				},
+				{
+					name: 'Precip. Probability',
+					type: 'line',
+					data: precipProbData,
+					smooth: true,
+					showSymbol: false,
+					lineStyle: { width: 2, type: 'dashed', color: '#5c6bc0' },
+					itemStyle: { color: '#5c6bc0' },
+					yAxisIndex: 1,
+					z: 4
+				},
+				...annotations()
+			],
+			textStyle: { color: colors.text }
+		};
+
+		const windOption: Record<string, unknown> = {
+			title: {
+				text: 'Wind Speed & Humidity',
+				left: 'left',
+				textStyle: { fontWeight: 'normal', fontSize: 16, color: colors.text }
+			},
+			tooltip: tooltipBase((params) => {
+				if (!params?.length) return '';
+				let html = formatDate(params[0].axisValue as number);
+				for (const item of params) {
+					const name = item.seriesName as string;
+					if (isAnnotation(name)) continue;
+					const val = (item.value as [number, number])?.[1];
+					if (val == null) continue;
+					if (name === 'Wind Speed') {
+						const idx = timestamps.indexOf(
+							(params[0] as Record<string, unknown>).axisValue as number
+						);
+						const windDir = idx >= 0 ? hourly.winddirection_10m[idx] : null;
+						html += `${item.marker} ${name}: <b>${val.toFixed(0)} ${windUnit}</b>`;
+						if (windDir != null && !isNaN(windDir)) html += ` (${getWindDirectionLabel(windDir)})`;
+						html += '<br/>';
+					} else if (name === 'Humidity') {
+						html += `${item.marker} ${name}: <b>${val.toFixed(0)}%</b><br/>`;
+					}
+				}
+				return html;
+			}),
+			legend: {
+				show: true,
+				bottom: 28,
+				textStyle: { color: colors.text },
+				data: ['Wind Speed', 'Humidity']
+			},
+			grid: { left: 60, right: 60, top: 50, bottom: 60 },
+			dataZoom: [insideZoom(), sliderZoom()],
+			xAxis: timeXAxis(true),
+			yAxis: [
+				{
+					type: 'value',
+					name: windUnit,
+					min: 0,
+					nameTextStyle: { color: colors.text },
+					axisLine: { show: false },
+					axisLabel: { color: colors.text },
+					splitLine: { lineStyle: { color: colors.splitLine } }
+				},
+				{
+					type: 'value',
+					name: '%',
+					min: 0,
+					max: 100,
+					nameTextStyle: { color: colors.text },
+					axisLine: { show: false },
+					axisLabel: { color: colors.text },
+					splitLine: { show: false }
+				}
+			],
+			series: [
+				{
+					name: 'Wind Speed',
+					type: 'line',
+					data: windData,
+					smooth: true,
+					showSymbol: false,
+					lineStyle: { width: 2, color: '#26a69a' },
+					itemStyle: { color: '#26a69a' },
+					areaStyle: {
+						color: new echarts.graphic.LinearGradient(0, 0, 0, 1, [
+							{ offset: 0, color: 'rgba(38, 166, 154, 0.25)' },
+							{ offset: 1, color: 'rgba(38, 166, 154, 0.02)' }
+						])
+					},
+					yAxisIndex: 0,
+					z: 5
+				},
+				{
+					name: 'Humidity',
+					type: 'line',
+					data: humidityData,
+					smooth: true,
+					showSymbol: false,
+					lineStyle: { width: 2, type: 'dotted', color: '#8d6e63' },
+					itemStyle: { color: '#8d6e63' },
+					yAxisIndex: 1,
+					z: 4
+				},
+				...annotations()
+			],
+			graphic: [
+				{
+					type: 'text',
+					right: 10,
+					bottom: 30,
+					style: {
+						text: 'Open-Meteo.com',
+						fontSize: 10,
+						fill: colors.text,
+						opacity: 0.4
+					},
+					cursor: 'pointer'
+				}
+			],
+			textStyle: { color: colors.text }
+		};
+
+		chartOptions = [tempOption, precipOption, windOption];
+	});
+</script>
+
+<div class="charts-toggle-section">
+	<button class="charts-toggle-btn" onclick={() => (showCharts = !showCharts)}>
+		<span>Detailed Meteogram Charts</span>
+		<svg
+			class="toggle-chevron {showCharts ? 'open' : ''}"
+			xmlns="http://www.w3.org/2000/svg"
+			width="18"
+			height="18"
+			viewBox="0 0 24 24"
+			fill="none"
+			stroke="currentColor"
+			stroke-width="2"
+			stroke-linecap="round"
+			stroke-linejoin="round"
+		>
+			<polyline points="6 9 12 15 18 9" />
+		</svg>
+	</button>
+</div>
+
+{#if showCharts}
+	<div class="detailed-charts" in:fade={{ duration: 200 }}>
+		<div class="charts-header">
+			<h3 class="charts-title">
+				{formatZoned(selectedDay, data.timezone, 'EEEE')}
+				<small>
+					{getRelativeDayLabel(selectedDay, data.timezone) !==
+					formatZoned(selectedDay, data.timezone, 'EEEE')
+						? ` (${getRelativeDayLabel(selectedDay, data.timezone)})`
+						: ''}
+				</small>
+			</h3>
+			<button type="button" class="zoom-reset-btn" title="Show all days (Esc)" onclick={resetZoom}>
+				Show All
+			</button>
+		</div>
+
+		<ChartContainer {loading} chartCount={3} chartHeight={300}>
+			{#each chartOptions as option, i (i)}
+				<EChart
+					{option}
+					height={i === 2 ? '320px' : '300px'}
+					onChartReady={handleChartReady}
+					bind:this={chartComponents[i]}
+				/>
+			{/each}
+		</ChartContainer>
+
+		<div class="mt-6 md:mt-10">
+			<ChartToolbar charts={chartInstances} fileName="week-forecast" />
+		</div>
+	</div>
+{/if}
+
+<style>
+	.charts-toggle-section {
+		margin-top: 1.5rem;
+		margin-bottom: 0.5rem;
+	}
+
+	.charts-toggle-btn {
+		display: inline-flex;
+		align-items: center;
+		gap: 6px;
+		padding: 0.5rem 1rem;
+		font-size: 0.875rem;
+		font-weight: 600;
+		color: hsl(var(--muted-foreground));
+		background: hsl(var(--muted) / 0.5);
+		border: 1px solid hsl(var(--border));
+		border-radius: var(--radius, 0.375rem);
+		cursor: pointer;
+		transition: all 150ms ease;
+	}
+
+	.charts-toggle-btn:hover {
+		color: hsl(var(--foreground));
+		background: hsl(var(--muted));
+	}
+
+	.toggle-chevron {
+		transition: transform 200ms;
+	}
+
+	.toggle-chevron.open {
+		transform: rotate(180deg);
+	}
+
+	.detailed-charts {
+		margin-top: 0.5rem;
+	}
+
+	.charts-header {
+		display: flex;
+		align-items: center;
+		gap: 0.75rem;
+		margin-bottom: 0.5rem;
+	}
+
+	.charts-title {
+		font-size: 1.25rem;
+		font-weight: 700;
+	}
+
+	.zoom-reset-btn {
+		display: inline-flex;
+		align-items: center;
+		padding: 0.25rem 0.625rem;
+		font-size: 0.75rem;
+		font-weight: 500;
+		color: hsl(var(--muted-foreground));
+		background: hsl(var(--muted) / 0.5);
+		border: 1px solid hsl(var(--border));
+		border-radius: var(--radius, 0.375rem);
+		cursor: pointer;
+		transition:
+			color 150ms ease,
+			background-color 150ms ease;
+		white-space: nowrap;
+		user-select: none;
+	}
+
+	.zoom-reset-btn:hover {
+		color: hsl(var(--foreground));
+		background: hsl(var(--muted));
+	}
+</style>

src/routes/weather/week/[location]/ModelSelector.svelte

@@ -0,0 +1,45 @@
+<script lang="ts">
+	import { Label } from '$lib/components/ui/label';
+	import * as Select from '$lib/components/ui/select';
+
+	import { models } from '../../options';
+
+	interface Props {
+		selectedModel: string;
+		onModelChange: (model: string) => void;
+	}
+
+	let { selectedModel, onModelChange }: Props = $props();
+
+	let modelLabel = $derived(
+		models.find((mo) => String(mo.value) === selectedModel)?.label ?? selectedModel
+	);
+</script>
+
+<div class="mt-6 flex gap-6 md:mt-12">
+	<div class="relative w-1/2">
+		<Select.Root
+			name="model_selection"
+			type="single"
+			value={selectedModel}
+			onValueChange={(val) => {
+				if (val) onModelChange(val);
+			}}
+		>
+			<Select.Trigger
+				aria-label="Forecast model selection"
+				class="h-12 cursor-pointer pt-6 [&_svg]:mb-3"
+			>
+				{modelLabel}
+			</Select.Trigger>
+			<Select.Content preventScroll={false} class="border-border">
+				{#each models as mo (mo.value)}
+					<Select.Item class="cursor-pointer" value={mo.value}>{mo.label}</Select.Item>
+				{/each}
+			</Select.Content>
+			<Label class="absolute top-[0.35rem] left-2 z-10 px-1 text-xs text-muted-foreground">
+				Weather model
+			</Label>
+		</Select.Root>
+	</div>
+</div>

src/routes/weather/week/[location]/SunInfo.svelte

@@ -0,0 +1,57 @@
+<script lang="ts">
+	import { formatZoned } from '$lib/utils/date';
+
+	import type { FetchedDaily } from './types';
+
+	interface Props {
+		daily: FetchedDaily | null;
+		dayIndex: number;
+	}
+
+	let { daily, dayIndex }: Props = $props();
+
+	let sunrise = $derived.by(() => {
+		if (!daily) return null;
+		const ts = daily.daily.sunrise[dayIndex];
+		return ts ? new Date(ts * 1000) : null;
+	});
+
+	let sunset = $derived.by(() => {
+		if (!daily) return null;
+		const ts = daily.daily.sunset[dayIndex];
+		return ts ? new Date(ts * 1000) : null;
+	});
+</script>
+
+{#if daily && sunrise && sunset}
+	<div class="sun-info">
+		<div class="sun-item">
+			<svg class="fill-foreground" width="24px" height="24px">
+				<use class="stroke-2" xlink:href="/images/weather-icons/wi-sunrise.svg#Layer_1"></use>
+			</svg>
+			<span>{formatZoned(sunrise, daily.timezone, 'HH:mm')}</span>
+		</div>
+		<div class="sun-item">
+			<svg class="fill-foreground" width="24px" height="24px">
+				<use class="stroke-2" xlink:href="/images/weather-icons/wi-sunset.svg#Layer_1"></use>
+			</svg>
+			<span>{formatZoned(sunset, daily.timezone, 'HH:mm')}</span>
+		</div>
+	</div>
+{/if}
+
+<style>
+	.sun-info {
+		display: flex;
+		gap: 1.5rem;
+		margin-top: 1rem;
+		flex-wrap: wrap;
+	}
+
+	.sun-item {
+		display: flex;
+		align-items: center;
+		gap: 4px;
+		font-size: 14px;
+	}
+</style>

src/routes/weather/week/[location]/types.ts

@@ -0,0 +1,60 @@
+import type { MarkArea, WeekDailyData, WeekHourlyData } from '$lib/services/weather';
+
+export interface WeatherUnits {
+	temperature_unit: string;
+	wind_speed_unit: string;
+	precipitation_unit: string;
+}
+
+export interface FetchedHourly {
+	hourly: WeekHourlyData;
+	utc_offset_seconds: number;
+	timezone: string;
+	timestamps: number[];
+	hourlyDates: Date[];
+	markAreas: MarkArea[];
+}
+
+export interface FetchedDaily {
+	daily: WeekDailyData;
+	timezone: string;
+	dailyDates: Date[];
+}
+
+export const getTempUnit = (units: WeatherUnits): '°C' | '°F' => {
+	return units.temperature_unit === 'celsius' ? '°C' : '°F';
+};
+
+export const getWindUnit = (units: WeatherUnits): string => {
+	return units.wind_speed_unit === 'kmh' ? 'km/h' : units.wind_speed_unit;
+};
+
+export const getPrecipUnit = (units: WeatherUnits): 'mm' | 'in' => {
+	return units.precipitation_unit === 'mm' ? 'mm' : 'in';
+};
+
+export const getWindArrowRotation = (deg: number): string => {
+	return `rotate(${deg}deg)`;
+};
+
+export const getWindDirectionLabel = (deg: number): string => {
+	const dirs = [
+		'N',
+		'NNE',
+		'NE',
+		'ENE',
+		'E',
+		'ESE',
+		'SE',
+		'SSE',
+		'S',
+		'SSW',
+		'SW',
+		'WSW',
+		'W',
+		'WNW',
+		'NW',
+		'NNW'
+	];
+	return dirs[Math.round(deg / 22.5) % 16];
+};

svelte.config.js

@@ -1,16 +1,33 @@
 import adapter from '@sveltejs/adapter-static';
 import { vitePreprocess } from '@sveltejs/vite-plugin-svelte';
+import fs from 'fs';
+import path from 'path';
 
 /** @type {import('@sveltejs/kit').Config} */
 const config = {
 	// Consult https://svelte.dev/docs/kit/integrations
 	// for more information about preprocessors
 	preprocess: vitePreprocess(),
-
 	kit: {
-		adapter: adapter({
+		adapter: adapter(),
-			fallback: '404.html'
+		// Pregenerate city pages to improve SEO during static build
-		})
+		prerender: {
+			entries: (() => {
+				try {
+					const citiesPath = path.resolve('src/routes/weather/locations/city-names100.json');
+					const raw = fs.readFileSync(citiesPath, 'utf-8');
+					const cities = JSON.parse(raw);
+					if (Array.isArray(cities)) {
+						const cityEntries = cities.map((c) => `/weather/week/${c}`);
+						// Keep the default wildcard to include other routes
+						return ['*', ...cityEntries];
+					}
+				} catch {
+					// If anything goes wrong, fall back to default behavior
+				}
+				return ['*'];
+			})()
+		}
 	}
 };
 

vite.config.ts

@@ -3,8 +3,34 @@ import tailwindcss from '@tailwindcss/vite';
 import { playwright } from '@vitest/browser-playwright';
 import { defineConfig } from 'vitest/config';
 
+import type { IncomingMessage, ServerResponse } from 'http';
+import type { Plugin, PreviewServer, ViteDevServer } from 'vite';
+
+const addHeaders = (res: ServerResponse) => {
+	res.setHeader('Access-Control-Allow-Origin', '*');
+	res.setHeader('Access-Control-Allow-Methods', 'GET');
+	res.setHeader('Cross-Origin-Opener-Policy', 'same-origin');
+	res.setHeader('Cross-Origin-Embedder-Policy', 'require-corp');
+};
+
+const viteServerConfig = (): Plugin => ({
+	name: 'add-headers',
+	configureServer: (server: ViteDevServer) => {
+		server.middlewares.use((_req: IncomingMessage, res: ServerResponse, next: () => void) => {
+			addHeaders(res);
+			next();
+		});
+	},
+	configurePreviewServer: (server: PreviewServer) => {
+		server.middlewares.use((_req: IncomingMessage, res: ServerResponse, next: () => void) => {
+			addHeaders(res);
+			next();
+		});
+	}
+});
+
 export default defineConfig({
-	plugins: [tailwindcss(), sveltekit()],
+	plugins: [tailwindcss(), sveltekit(), viteServerConfig()],
 
 	test: {
 		expect: { requireAssertions: true },