/* ANAX · auto-mark current nav item with .is-active + aria-current="page"
   Strategy: compare window.location.pathname to each <a href> in topbar.
   - Exact match → mega submenu item gets .is-active
   - First-segment match → top-level parent menu (Markets/Platforms/etc) gets .is-active
   - Home (/) → Home nav item gets .is-active
*/
(function () {
  var path = location.pathname.replace(/\/index\.html$/, '/').replace(/\/+$/, '') || '/';
  var top = path.split('/').filter(Boolean)[0] || ''; // 'markets' | 'about' | etc.

  // 1 · deep-page exact match inside mega menus
  document.querySelectorAll('.topbar .nav .mega a[href]').forEach(function (a) {
    var href = a.getAttribute('href');
    if (!href) return;
    try {
      var u = new URL(href, location.origin + location.pathname).pathname.replace(/\/index\.html$/, '/').replace(/\/+$/, '') || '/';
      if (u === path) {
        a.classList.add('is-active');
        a.setAttribute('aria-current', 'page');
        // Bubble active state up to the parent <li> (top-level mega item)
        var parentLi = a.closest('.topbar .nav > li');
        if (parentLi) parentLi.classList.add('is-active');
      }
    } catch (e) {}
  });

  // 2 · top-level nav link exact match (Home/About/Contact)
  document.querySelectorAll('.topbar .nav > li > a[href]').forEach(function (a) {
    var href = a.getAttribute('href');
    if (!href) return;
    try {
      var u = new URL(href, location.origin + location.pathname).pathname.replace(/\/index\.html$/, '/').replace(/\/+$/, '') || '/';
      if (u === path) {
        a.parentElement.classList.add('is-active');
        a.setAttribute('aria-current', 'page');
      }
    } catch (e) {}
  });

  // 3 · top-level segment fallback (markets/* → Markets parent)
  if (top) {
    document.querySelectorAll('.topbar .nav > li > button[aria-haspopup]').forEach(function (btn) {
      var li = btn.parentElement;
      // any <a> inside mega whose first path segment matches
      var match = li.querySelector('.mega a[href*="' + top + '/"], .mega a[href^="' + top + '"]');
      if (match && !li.classList.contains('is-active')) {
        li.classList.add('is-active');
      }
    });
  }
})();