/* =========================================================
   Smartex — Header helper (sticky + auto-hide + anchor offset)
   v6 (instant hide on any downward scroll; no thresholds)
   ========================================================= */
(function () {
  // Find the navbar across templates
  var bar =
    document.querySelector('.navbar.navbar-inverse.navbar-static-top') ||
    document.querySelector('.navbar.navbar-inverse') ||
    document.querySelector('header .navbar') ||
    document.querySelector('.site-header .navbar');

  if (!bar) {
    console && console.warn && console.warn('[Smartex Header] Navbar not found on this page.');
    return;
  }
  console && console.log && console.log('[Smartex Header] Hooked navbar:', bar.className);

  /* Keep CSS var --header-h in sync with real header height */
  function syncHeaderH() {
    document.documentElement.style.setProperty('--header-h', bar.getBoundingClientRect().height + 'px');
  }
  window.addEventListener('load', syncHeaderH);
  window.addEventListener('resize', syncHeaderH);
  if (document.fonts && document.fonts.ready) { document.fonts.ready.then(syncHeaderH).catch(function(){}); }
  syncHeaderH();

  /* Instant hide/show logic */
  var lastY = window.pageYOffset || document.documentElement.scrollTop || 0;

  function applyState(y, dy) {
    var menuOpen = document.body.classList.contains('nav-open');
    if (menuOpen) { bar.classList.remove('navbar--hidden'); return; }

    if (dy > 0) {
      // any down movement -> hide
      bar.classList.add('navbar--hidden');
    } else if (dy < 0) {
      // any up movement -> show
      bar.classList.remove('navbar--hidden');
    }
  }

  function onScroll() {
    var y = window.pageYOffset || document.documentElement.scrollTop || 0;
    var dy = y - lastY;
    if (dy !== 0) applyState(y, dy);
    lastY = y;
  }

  // Scroll
  window.addEventListener('scroll', onScroll, { passive: true });

  // Wheel: react even on pages with tiny scroll changes
  window.addEventListener('wheel', function (e) {
    if (e.deltaY > 0) {
      document.body.classList.contains('nav-open') || bar.classList.add('navbar--hidden');
    } else if (e.deltaY < 0) {
      bar.classList.remove('navbar--hidden');
    }
  }, { passive: true });

  // Touch (mobile)
  var touchStartY = 0;
  window.addEventListener('touchstart', function (e) {
    if (e.touches && e.touches.length) touchStartY = e.touches[0].clientY;
  }, { passive: true });

  window.addEventListener('touchmove', function (e) {
    if (!(e.touches && e.touches.length)) return;
    var dy = touchStartY - e.touches[0].clientY; // >0 means moving finger up => page scrolls down
    if (dy > 0) {
      document.body.classList.contains('nav-open') || bar.classList.add('navbar--hidden');
    } else if (dy < 0) {
      bar.classList.remove('navbar--hidden');
    }
  }, { passive: true });

  /* Keep bar visible while mobile nav is open & track open state */
  var nav = document.getElementById('navbar');
  function updateOpenState() {
    var open = nav && (nav.classList.contains('in') || nav.classList.contains('show'));
    document.body.classList.toggle('nav-open', !!open);
    if (open) bar.classList.remove('navbar--hidden');
    syncHeaderH();
  }
  if (nav) {
    nav.addEventListener('shown.bs.collapse', updateOpenState);
    nav.addEventListener('hidden.bs.collapse', updateOpenState);
    var mo = new MutationObserver(updateOpenState);
    mo.observe(nav, { attributes: true, attributeFilter: ['class', 'style', 'aria-expanded'] });
  }
})();
(function () {
  var btn = document.querySelector('.navbar-toggle');
  var nav = document.getElementById('navbar');
  if (!btn || !nav) return;

  var ham = btn.querySelector('.icon-hamburger');
  var close = btn.querySelector('.icon-close');

  function setIcons(open) {
    if (!ham || !close) return;
    ham.style.display   = open ? 'none'  : 'inline';
    close.style.display = open ? 'inline': 'none';
    btn.setAttribute('aria-expanded', open ? 'true' : 'false');
  }

  // initial state
  setIcons(false);

  // Prefer Bootstrap 3 collapse events if available
  if (typeof jQuery !== 'undefined' && typeof jQuery.fn.collapse !== 'undefined') {
    jQuery('#navbar').on('show.bs.collapse', function () { setIcons(true);  });
    jQuery('#navbar').on('hide.bs.collapse', function () { setIcons(false); });
  } else {
    // Fallback: infer state on click
    btn.addEventListener('click', function () {
      var isOpen = nav.classList.contains('in') || nav.style.display === 'block';
      setIcons(!isOpen);
    });
  }
})();