Code2Date/index.html at main · harrydng/Code2Date · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8" />
  <meta name="viewport" content="width=device-width, initial-scale=1.0" />

  <!-- CRITICAL: Add this script BEFORE any stylesheets to prevent flash -->
  <script>
    (function() {
      // Get saved theme from localStorage
      const savedTheme = localStorage.getItem('theme');

      // Determine if dark mode should be enabled
      const isDark = savedTheme === 'dark' ||
                     (!savedTheme && window.matchMedia('(prefers-color-scheme: dark)').matches);

      // Apply theme immediately (before page renders)
      if (isDark) {
        document.documentElement.setAttribute('data-theme', 'dark');
      }
    })();
  </script>

  <!-- Your CSS files go here -->
  <link rel="stylesheet" href="/src/styles/theme.css" />
  <link rel="stylesheet" href="/src/index.css" />

  <title>Fake Stack Overflow</title>
</head>
<body>
  <div id="root"></div>
  <script type="module" src="/src/main.tsx"></script>
</body>
</html>

<!--
  HOW THIS WORKS:

  1. Script runs IMMEDIATELY (before page renders)
  2. Checks localStorage for saved theme preference
  3. Falls back to system preference if no saved theme
  4. Sets data-theme attribute on <html> element
  5. CSS uses [data-theme="dark"] selector to apply dark styles
  6. Page renders with correct theme (no flash!)

  IMPORTANT: This script must be:
  - In the <head>
  - Before any <link> stylesheets
  - Not async or defer
  - Pure JavaScript (no React)
-->