(() => {
  const toggle = document.getElementById('mobileToggle');
  const nav = document.getElementById('siteNav');

  if (toggle && nav) {
    toggle.addEventListener('click', () => {
      const expanded = toggle.getAttribute('aria-expanded') === 'true';
      toggle.setAttribute('aria-expanded', String(!expanded));
      nav.classList.toggle('open');
    });

    nav.querySelectorAll('a').forEach((link) => {
      link.addEventListener('click', () => {
        toggle.setAttribute('aria-expanded', 'false');
        nav.classList.remove('open');
      });
    });
  }
})();