/* data-href-nav.js
 * Enables JS-only navigation for elements with [data-href].
 * - Uses rel="nofollow" links rendered with href="javascript:void(0)"
 * - Supports Ctrl/Cmd-click to open in a new tab
 */
(function(){
  if (window.__dataHrefNavEnabled) return;
  window.__dataHrefNavEnabled = true;

  function onClick(e){
    var el = e.target && e.target.closest ? e.target.closest('[data-href]') : null;
    if(!el) return;

    var href = el.getAttribute('data-href');
    if(!href) return;

    // Open in new tab if user holds Ctrl/Cmd
    var openNewTab = e.ctrlKey || e.metaKey;
    if (openNewTab) {
      window.open(href, '_blank');
      e.preventDefault();
      return;
    }

    // Default: same-tab navigation
    window.location.href = href;
    e.preventDefault();
  }

  function onKeyDown(e){
    var el = e.target;
    if (!el || !el.getAttribute) return;
    if (!el.hasAttribute('data-href')) return;
    var key = e.key || e.keyCode;
    var isEnter = key === 'Enter' || key === 13;
    var isSpace = key === ' ' || key === 'Spacebar' || key === 32;
    if (!isEnter && !isSpace) return;

    var href = el.getAttribute('data-href');
    if (!href) return;

    // Prevent page scroll on Space
    e.preventDefault();
    window.location.href = href;
  }

  // Capture phase to ensure it runs before most handlers
  document.addEventListener('click', onClick, true);
  document.addEventListener('keydown', onKeyDown, true);
})();