feat: site-wide dark mode (Tailwind class strategy); ThemeToggle island in header; persist preference; adjust brand-surface for dark

src/components/ThemeToggle.jsx

@@ -0,0 +1,42 @@
+import { useEffect, useState } from 'react';
+
+export default function ThemeToggle() {
+  const [isDark, setIsDark] = useState(false);
+
+  useEffect(() => {
+    const stored = localStorage.getItem('omoluabi_theme');
+    const prefersDark = window.matchMedia('(prefers-color-scheme: dark)').matches;
+    const initial = stored ? stored === 'dark' : prefersDark;
+    setIsDark(initial);
+    document.documentElement.classList.toggle('dark', initial);
+  }, []);
+
+  const toggle = () => {
+    const next = !isDark;
+    setIsDark(next);
+    document.documentElement.classList.toggle('dark', next);
+    localStorage.setItem('omoluabi_theme', next ? 'dark' : 'light');
+  };
+
+  return (
+    <button
+      onClick={toggle}
+      className="inline-flex items-center gap-2 px-3 py-2 rounded-lg border border-gray-200 dark:border-gray-700 bg-white dark:bg-gray-800 text-gray-900 dark:text-gray-100 hover:bg-gray-50 dark:hover:bg-gray-700 transition-colors"
+      aria-label="Toggle color theme"
+    >
+      {isDark ? (
+        <>
+          <svg xmlns="http://www.w3.org/2000/svg" className="h-4 w-4" fill="currentColor" viewBox="0 0 24 24"><path d="M21.64 13a1 1 0 0 0-1.05-.14 8 8 0 1 1-9.45-9.45 1 1 0 0 0-.14-2A10 10 0 1 0 23 14a1 1 0 0 0-1.36-1z"/></svg>
+          <span className="text-sm">Dark</span>
+        </>
+      ) : (
+        <>
+          <svg xmlns="http://www.w3.org/2000/svg" className="h-4 w-4" fill="currentColor" viewBox="0 0 24 24"><path d="M6.76 4.84l-1.8-1.79-1.41 1.41 1.79 1.8 1.42-1.42zm10.45 14.32l1.79 1.8 1.41-1.41-1.8-1.79-1.4 1.4zM12 4a1 1 0 0 1 1 1v2a1 1 0 1 1-2 0V5a1 1 0 0 1 1-1zm0 12a4 4 0 1 0 0-8 4 4 0 0 0 0 8zm8-5h-2a1 1 0 1 1 0-2h2a1 1 0 1 1 0 2zM4 13H2a1 1 0 1 1 0-2h2a1 1 0 1 1 0 2zm2.76 6.36l-1.42 1.42-1.79-1.8 1.41-1.41 1.8 1.79zM19.78 4.46l-1.41-1.41-1.8 1.79 1.41 1.41 1.8-1.79z"/></svg>
+          <span className="text-sm">Light</span>
+        </>
+      )}
+    </button>
+  );
+}
+
+

src/layouts/BaseLayout.astro

@@ -2,6 +2,7 @@
 // src/layouts/BaseLayout.astro
 import '../styles/global.css';
 import '../styles/main.css';
+import ThemeToggle from '../components/ThemeToggle.jsx';
 
 export interface Props {
   title?: string;
@@ -55,8 +56,11 @@ const { title = "Omoluabi Association Netherlands", description = "Preserving Ni
             <a href="/contact" class="text-gray-700 hover:text-nigerian-green-600 transition-colors">Contact</a>
           </div>
 
-          <!-- CTA Buttons -->
+          <!-- Right side controls -->
           <div class="hidden md:flex items-center space-x-4">
+            <astro-island>
+              <ThemeToggle client:load />
+            </astro-island>
             <a href="/donate" class="btn bg-gradient-to-r from-ankara-red-500 to-kente-gold-500 text-white hover:shadow-lg">
               ❤️ Donate
             </a>

src/styles/global.css

@@ -17,6 +17,11 @@
   --dutch-blue: #1e4785;
 }
 
+/* Dark theme tokens */
+.dark {
+  --dutch-white: #0b0f14;
+}
+
 /* Custom scrollbar */
 ::-webkit-scrollbar {
   width: 8px;

src/styles/main.css

@@ -372,6 +372,11 @@
                 linear-gradient(135deg, rgba(12, 84, 36, 0.95) 0%, rgba(29, 78, 216, 0.90) 100%);
     color: #fff;
   }
+
+  .dark .brand-surface {
+    background: radial-gradient(1200px 600px at 20% 20%, rgba(255,255,255,0.04), rgba(255,255,255,0) 60%),
+                linear-gradient(135deg, rgba(6, 59, 21, 0.95) 0%, rgba(23, 37, 84, 0.95) 100%);
+  }
   
   /* Combined Flag Button */
   .btn-combined-flag {

tailwind.config.js

@@ -1,6 +1,7 @@
 // tailwind.config.mjs
 /** @type {import('tailwindcss').Config} */
 export default {
+  darkMode: 'class',
   content: ['./src/**/*.{astro,html,js,jsx,md,mdx,svelte,ts,tsx,vue}'],
   theme: {
     extend: {