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public/js/theme.js

11 lines

(function () {
  const btn = document.getElementById('themeToggle');
  if (!btn) return;
  btn.addEventListener('click', () => {
    const cur = document.documentElement.dataset.theme || 'dark';
    const next = cur === 'dark' ? 'light' : 'dark';
    document.documentElement.dataset.theme = next;
    try { localStorage.setItem('theme', next); } catch (e) {}
  });
})();