document.addEventListener('DOMContentLoaded', function () {
  var btn = document.querySelector('.menu-toggle');
  var sidebar = document.querySelector('.sidebar');
  if (btn && sidebar) {
    btn.addEventListener('click', function () {
      sidebar.classList.toggle('open');
    });
  }

  document.querySelectorAll('.copy-btn').forEach(function (button) {
    button.addEventListener('click', function () {
      var block = button.closest('.code-block');
      var code = block ? block.querySelector('pre code, pre') : null;
      if (!code) return;
      var text = code.textContent;

      function showCopied() {
        var original = button.textContent;
        button.textContent = 'Copiado!';
        button.classList.add('copied');
        setTimeout(function () {
          button.textContent = original;
          button.classList.remove('copied');
        }, 1800);
      }

      if (navigator.clipboard && navigator.clipboard.writeText) {
        navigator.clipboard.writeText(text).then(showCopied, function () {
          fallbackCopy(text, showCopied);
        });
      } else {
        fallbackCopy(text, showCopied);
      }
    });
  });

  function fallbackCopy(text, done) {
    var ta = document.createElement('textarea');
    ta.value = text;
    ta.style.position = 'fixed';
    ta.style.opacity = '0';
    document.body.appendChild(ta);
    ta.focus();
    ta.select();
    try { document.execCommand('copy'); } catch (e) { /* no-op */ }
    document.body.removeChild(ta);
    done();
  }
});