(function () {
  var btn    = document.getElementById('nav-hamburger');
  var drawer = document.getElementById('nav-drawer');
  if (!btn || !drawer) return;

  btn.addEventListener('click', function () {
    var isOpen = drawer.classList.toggle('open');
    btn.classList.toggle('open', isOpen);
    btn.setAttribute('aria-expanded', String(isOpen));
  });

  // Ferme le drawer quand on clique sur un lien
  drawer.querySelectorAll('a').forEach(function (a) {
    a.addEventListener('click', function () {
      drawer.classList.remove('open');
      btn.classList.remove('open');
      btn.setAttribute('aria-expanded', 'false');
    });
  });
})();