// Minimal JS: mobile nav toggle + active section highlight.
(function () {
  var toggle = document.querySelector('.nav-toggle');
  var nav = document.querySelector('.site-nav');
  if (toggle && nav) {
    toggle.addEventListener('click', function () {
      var open = nav.classList.toggle('open');
      toggle.setAttribute('aria-expanded', open ? 'true' : 'false');
    });
    nav.addEventListener('click', function (e) {
      if (e.target.tagName === 'A' && window.innerWidth <= 640) {
        nav.classList.remove('open');
        toggle.setAttribute('aria-expanded', 'false');
      }
    });
  }

  // Set current year in footer
  var y = document.getElementById('year');
  if (y) y.textContent = new Date().getFullYear();
})();