fix(website): synchronize theme state across all apps and prevent toggle conflicts

website/assets/js/global-header.js

@@ -1,4 +1,16 @@
 (function () {
+  // Immediately restore theme on script load
+  const savedTheme = localStorage.getItem('theme') || localStorage.getItem('exchangeTheme');
+  if (savedTheme) {
+    if (savedTheme === 'dark') {
+      document.documentElement.setAttribute('data-theme', 'dark');
+      document.documentElement.classList.add('dark');
+    } else {
+      document.documentElement.removeAttribute('data-theme');
+      document.documentElement.classList.remove('dark');
+    }
+  }
+
   const NAV_ITEMS = [
     { key: 'home', label: 'Home', href: '/' },
     { key: 'explorer', label: 'Explorer', href: '/explorer/' },
@@ -69,22 +81,39 @@
     }
   }
 
+    function setGlobalTheme(theme) {
+    if (theme === 'dark') {
+      document.documentElement.setAttribute('data-theme', 'dark');
+      document.documentElement.classList.add('dark');
+      document.body.classList.remove('light');
+    } else {
+      document.documentElement.removeAttribute('data-theme');
+      document.documentElement.classList.remove('dark');
+      document.body.classList.add('light');
+    }
+    localStorage.setItem('theme', theme);
+    localStorage.setItem('exchangeTheme', theme); // for backwards compat
+  }
+
+  function getGlobalTheme() {
+    return localStorage.getItem('theme') || localStorage.getItem('exchangeTheme') || 'dark';
+  }
+
   function bindThemeToggle() {
     const toggle = document.querySelector('[data-role="global-theme-toggle"]');
     if (!toggle) return;
 
     toggle.addEventListener('click', () => {
-      if (typeof window.toggleDarkMode === 'function') {
-        window.toggleDarkMode();
-      } else if (typeof window.toggleTheme === 'function') {
-        window.toggleTheme();
-      } else {
-        const isDark = document.documentElement.classList.toggle('dark');
-        if (isDark) {
-          document.documentElement.setAttribute('data-theme', 'dark');
-        } else {
-          document.documentElement.removeAttribute('data-theme');
-        }
+      // Don't call window.toggleDarkMode anymore because it causes state desync.
+      // We take full control of the global theme here.
+      const current = getCurrentTheme();
+      const next = current === 'dark' ? 'light' : 'dark';
+      
+      setGlobalTheme(next);
+      
+      // If the page has a specific app-level override, trigger it
+      if (typeof window.setTheme === 'function' && window.location.pathname === '/') {
+          window.setTheme(next);
       }
 
       setTimeout(() => updateToggleLabel(getCurrentTheme()), 0);
@@ -93,6 +122,7 @@
     updateToggleLabel(getCurrentTheme());
   }
 
+
   function initHeader() {
     const activeKey = determineActiveKey(window.location.pathname);
     const headerHTML = buildHeader(activeKey);

website/assets/js/main.js

@@ -38,49 +38,12 @@ document.querySelectorAll('.feature-card, .arch-component').forEach(el => {
 });
 
 // Dark mode functionality with enhanced persistence and system preference detection
-function toggleDarkMode() {
-    const currentTheme = document.documentElement.getAttribute('data-theme');
-    const newTheme = currentTheme === 'dark' ? 'light' : 'dark';
-    setTheme(newTheme);
+
 }
 
-function setTheme(theme) {
-    // Apply theme immediately
-    document.documentElement.setAttribute('data-theme', theme);
-    
-    // Save to localStorage for persistence
-    localStorage.setItem('theme', theme);
-    
-    // Update button display if it exists
-    updateThemeButton(theme);
-    
-    // Send analytics event
-    if (window.analytics) {
-        window.analytics.track('theme_changed', { theme });
     }
 }
 
-function updateThemeButton(theme) {
-    const emoji = document.getElementById('darkModeEmoji');
-    const text = document.getElementById('darkModeText');
-    
-    if (emoji && text) {
-        if (theme === 'dark') {
-            emoji.textContent = '🌙';
-            text.textContent = 'Dark';
-        } else {
-            emoji.textContent = '☀️';
-            text.textContent = 'Light';
-        }
-    }
-}
-
-function getPreferredTheme() {
-    // 1. Check localStorage first (user preference)
-    const saved = localStorage.getItem('theme');
-    if (saved) {
-        return saved;
-    }
     
     // 2. Check system preference
     if (window.matchMedia && window.matchMedia('(prefers-color-scheme: dark)').matches) {
@@ -107,7 +70,6 @@ function initializeTheme() {
 }
 
 // Initialize theme immediately (before DOM loads)
-initializeTheme();
 
 // Touch gesture support for mobile navigation
 class TouchNavigation {