<style>
  :root{
    --wipe-duration: .1s;
    --wipe-ease: cubic-bezier(1,.22,.22,1);
    --wipe-color: #fff;
  }

  .wipe-overlay{
    position: fixed;
    inset: 0;
    background: var(--wipe-color);
    z-index: 2147483647;
    pointer-events: none;
    opacity: 1;
    transition: opacity var(--wipe-duration) var(--wipe-ease);
  }

  .wipe-overlay.no-trans{
    transition: none;
  }

  /* Na pageload: fade naar transparant */
  .wipe-overlay.is-revealing{
    opacity: 0;
  }

  /* Bij navigatie: fade weer naar volledig zichtbaar */
  .wipe-overlay.is-covering{
    opacity: 1;
  }

  @media (prefers-reduced-motion: reduce){
    .wipe-overlay{
      transition: none !important;
      opacity: 0 !important;
    }
  }
</style>

<div class="wipe-overlay no-trans" id="wipe"></div>

<script>
(function () {
  var wipe = document.getElementById('wipe');
  if (!wipe) return;

  function startReveal(){
    // overlay van 1 → 0 (fade-out)
    wipe.classList.remove('no-trans');
    requestAnimationFrame(function(){
      wipe.classList.add('is-revealing');
      wipe.classList.remove('is-covering');
    });
  }

  // Bij binnenkomst pagina: reset + fade-out
  window.addEventListener('pageshow', function () {
    wipe.classList.add('no-trans');
    wipe.classList.remove('is-covering', 'is-revealing');
    requestAnimationFrame(startReveal);
  });

  function normPath(p){
    if (!p) return '/';
    p = p.replace(/\/index\.html?$/i, '/').replace(/\/+$/,'/');
    return p || '/';
  }

  document.addEventListener('click', function (e) {
    if (e.defaultPrevented) return;

    var a = e.target.closest && e.target.closest('a');
    if (!a) return;

    var here = new URL(window.location.href);
    var url  = new URL(a.href, here);

    // externe link / nieuwe tab / download → negeren
    if (url.origin !== here.origin) return;
    if (e.metaKey || e.ctrlKey || e.shiftKey || e.altKey) return;
    if (a.target === '_blank' || a.hasAttribute('download')) return;

    var samePath   = normPath(url.pathname) === normPath(here.pathname);
    var sameSearch = url.search === here.search;
    if (samePath && sameSearch) return;

    e.preventDefault();

    // reset naar transparant, dan fade naar opaque
    wipe.classList.remove('no-trans', 'is-revealing');
    void wipe.offsetHeight; // force reflow zodat transition altijd triggert
    wipe.classList.add('is-covering');

    var go = function () {
      wipe.removeEventListener('transitionend', go);
      window.location.href = a.href;
    };
    wipe.addEventListener('transitionend', go);
  }, { capture: true });
})();
</script>
