/* Horizontal carousels. The accordions work without script (each toggle is a real
   link the server renders), so this file only adds the arrow scrolling. */
(function () {
  function step(track) {
    var card = track.querySelector('li');
    if (!card) return 300;
    var styles = window.getComputedStyle(track);
    var gap = parseFloat(styles.columnGap || styles.gap || '0') || 0;
    return card.getBoundingClientRect().width + gap;
  }
  function bind(button, delta) {
    var name = button.getAttribute('data-carousel-prev') || button.getAttribute('data-carousel-next');
    var track = document.querySelector('[data-carousel="' + name + '"]');
    if (!track) return;
    button.addEventListener('click', function () {
      track.scrollBy({ left: delta * step(track) * 2, behavior: 'smooth' });
    });
  }
  document.querySelectorAll('[data-carousel-prev]').forEach(function (b) { bind(b, -1); });
  document.querySelectorAll('[data-carousel-next]').forEach(function (b) { bind(b, 1); });
})();