(function () {
  window.toggleTheme = function toggleTheme() {
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    root.classList.toggle('dark');
    localStorage.setItem('theme', root.classList.contains('dark') ? 'dark' : 'light');
  };

  document.addEventListener('DOMContentLoaded', function onReady() {
    const toggle = document.querySelector('[data-theme-toggle]');
    if (toggle) {
      toggle.addEventListener('click', window.toggleTheme);
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})();