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feat: add dark/light mode toggle

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- Add blocking inline script in app.html that reads localStorage
  'theme' and applies .dark class before render (no flash)
- Invert gray scale in .dark via CSS custom properties so all
  grayscale colors reverse automatically (light becomes dark)
- Add @custom-variant dark to enable dark: utility classes
- Add border-button toggle ("Dark"/"Light") in TopBar far right
- Persist preference in localStorage
This commit is contained in:
NeilClack
2026-07-07 09:54:32 -05:00
parent 5a13f2516c
commit 03ecfbd635
3 changed files with 108 additions and 64 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/app.html
+10
View File
@@ -4,6 +4,16 @@
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<script>
(function () {
const theme = localStorage.getItem('theme');
if (theme === 'dark' || (!theme && window.matchMedia('(prefers-color-scheme: dark)').matches)) {
document.documentElement.classList.add('dark');
} else {
document.documentElement.classList.remove('dark');
}
})();
</script>
%sveltekit.head%
</head>
src/lib/components/ui/topBar/TopBar.svelte
+30 -9
View File
@@ -1,28 +1,49 @@
<script lang="ts">
import { authClient } from '$lib/auth-client';
import { canAccessAdmin } from '$lib/svelte-admin/roles';
import { onMount } from 'svelte';
let { userRoleId = null }: { userRoleId: number | null } = $props();
const session = authClient.useSession();
let isAdmin = $derived(canAccessAdmin(userRoleId));
let dark = $state(false);
onMount(() => {
dark = document.documentElement.classList.contains('dark');
});
function toggleTheme() {
dark = !dark;
if (dark) {
document.documentElement.classList.add('dark');
localStorage.setItem('theme', 'dark');
} else {
document.documentElement.classList.remove('dark');
localStorage.setItem('theme', 'light');
}
}
</script>
<nav class="flex w-full justify-between px-8 py-6">
<nav class="flex w-full items-center justify-between px-8 py-6">
<span><a href="/">Rhema Wave Technologies</a></span>
{#if $session.data}
<div>
<div class="flex items-center gap-4">
<button onclick={toggleTheme} class="border px-3 py-1 text-sm">
{dark ? 'Light' : 'Dark'}
</button>
{#if $session.data}
{#if isAdmin}
<a href="/admin" class="mx-2">Admin Panel</a>
<a href="/admin">Admin Panel</a>
{/if}
<a href="/dashboard" class="mx-2">Dashboard</a>
<a href="/dashboard">Dashboard</a>
<button
onclick={async () => {
await authClient.signOut();
window.location.href = '/';
}}>Log Out</button
>
</div>
{:else}
<span><a href="/login">Log In</a> | <a href="/register">Register</a></span>
{/if}
{:else}
<span><a href="/login">Log In</a> | <a href="/register">Register</a></span>
{/if}
</div>
</nav>
src/routes/layout.css
+68 -55
View File
@@ -2,64 +2,62 @@
@plugin '@tailwindcss/forms';
@plugin '@tailwindcss/typography';
/* Use class-based dark mode instead of prefers-color-scheme */
@custom-variant dark (&:where(.dark, .dark *));
/* ------------------------------------------------------------------ */
/* Wireframe theme — remap all non-gray colors to grayscale */
/* Wireframe base — remap all non-gray colors to grayscale */
/* Use var(--color-gray-N) so dark-mode inversion flows through */
/* ------------------------------------------------------------------ */
@theme {
/* blue → gray */
--color-blue-50: #f3f4f6;
--color-blue-100: #e5e7eb;
--color-blue-200: #d1d5db;
--color-blue-300: #9ca3af;
--color-blue-400: #6b7280;
--color-blue-500: #6b7280;
--color-blue-600: #4b5563;
--color-blue-700: #374151;
--color-blue-800: #1f2937;
/* green → gray */
--color-green-50: #f3f4f6;
--color-green-100: #e5e7eb;
--color-green-200: #d1d5db;
--color-green-300: #9ca3af;
--color-green-400: #6b7280;
--color-green-500: #6b7280;
--color-green-600: #4b5563;
--color-green-700: #374151;
--color-green-800: #1f2937;
/* red → gray */
--color-red-50: #f3f4f6;
--color-red-100: #e5e7eb;
--color-red-200: #d1d5db;
--color-red-300: #9ca3af;
--color-red-400: #6b7280;
--color-red-500: #6b7280;
--color-red-600: #4b5563;
--color-red-700: #374151;
--color-red-800: #1f2937;
/* purple → gray */
--color-purple-50: #f3f4f6;
--color-purple-100: #e5e7eb;
--color-purple-200: #d1d5db;
--color-purple-300: #9ca3af;
--color-purple-400: #6b7280;
--color-purple-500: #6b7280;
--color-purple-600: #4b5563;
--color-purple-700: #374151;
--color-purple-800: #1f2937;
--color-purple-900: #111827;
/* slate → gray */
--color-slate-50: #f8fafc;
--color-slate-100: #f1f5f9;
--color-slate-200: #e2e8f0;
--color-slate-300: #cbd5e1;
--color-slate-400: #94a3b8;
--color-slate-500: #64748b;
--color-slate-600: #475569;
--color-slate-700: #334155;
--color-slate-800: #1e293b;
--color-slate-900: #111827;
--color-blue-50: var(--color-gray-100);
--color-blue-100: var(--color-gray-200);
--color-blue-200: var(--color-gray-300);
--color-blue-300: var(--color-gray-400);
--color-blue-400: var(--color-gray-500);
--color-blue-500: var(--color-gray-500);
--color-blue-600: var(--color-gray-600);
--color-blue-700: var(--color-gray-700);
--color-blue-800: var(--color-gray-800);
--color-green-50: var(--color-gray-100);
--color-green-100: var(--color-gray-200);
--color-green-200: var(--color-gray-300);
--color-green-300: var(--color-gray-400);
--color-green-400: var(--color-gray-500);
--color-green-500: var(--color-gray-500);
--color-green-600: var(--color-gray-600);
--color-green-700: var(--color-gray-700);
--color-green-800: var(--color-gray-800);
--color-red-50: var(--color-gray-100);
--color-red-100: var(--color-gray-200);
--color-red-200: var(--color-gray-300);
--color-red-300: var(--color-gray-400);
--color-red-400: var(--color-gray-500);
--color-red-500: var(--color-gray-500);
--color-red-600: var(--color-gray-600);
--color-red-700: var(--color-gray-700);
--color-red-800: var(--color-gray-800);
--color-purple-50: var(--color-gray-100);
--color-purple-100: var(--color-gray-200);
--color-purple-200: var(--color-gray-300);
--color-purple-300: var(--color-gray-400);
--color-purple-400: var(--color-gray-500);
--color-purple-500: var(--color-gray-500);
--color-purple-600: var(--color-gray-600);
--color-purple-700: var(--color-gray-700);
--color-purple-800: var(--color-gray-800);
--color-purple-900: var(--color-gray-900);
--color-slate-50: var(--color-gray-50);
--color-slate-100: var(--color-gray-100);
--color-slate-200: var(--color-gray-200);
--color-slate-300: var(--color-gray-300);
--color-slate-400: var(--color-gray-400);
--color-slate-500: var(--color-gray-500);
--color-slate-600: var(--color-gray-600);
--color-slate-700: var(--color-gray-700);
--color-slate-800: var(--color-gray-800);
--color-slate-900: var(--color-gray-900);
/* zero out decorative radii */
--radius: 0px;
--radius-sm: 0px;
--radius-md: 0px;
@@ -68,7 +66,6 @@
--radius-2xl: 0px;
--radius-3xl: 0px;
/* zero out shadows */
--shadow-sm: 0 0 #0000;
--shadow: 0 0 #0000;
--shadow-md: 0 0 #0000;
@@ -77,6 +74,22 @@
--shadow-2xl: 0 0 #0000;
}
/* ------------------------------------------------------------------ */
/* Dark mode — invert the gray scale */
/* ------------------------------------------------------------------ */
.dark {
--color-gray-50: #030712;
--color-gray-100: #111827;
--color-gray-200: #1f2937;
--color-gray-300: #374151;
--color-gray-400: #4b5563;
--color-gray-500: #6b7280;
--color-gray-600: #9ca3af;
--color-gray-700: #d1d5db;
--color-gray-800: #e5e7eb;
--color-gray-900: #f9fafb;
}
/* ------------------------------------------------------------------ */
/* Force-disable transitions, animations, and remaining decoration */
/* ------------------------------------------------------------------ */