document.addEventListener('DOMContentLoaded', function () {
  var toggle = document.querySelector('.mobile-menu-toggle');
  var nav = document.getElementById('petlunaNav');
  if (toggle && nav) {
    toggle.addEventListener('click', function () {
      if (nav.classList.contains('is-open')) {
        nav.classList.remove('is-open');
      } else {
        nav.classList.add('is-open');
      }
    });
  }
});
