// Art page — vanilla JS (no jQuery, no Bootstrap carousel).

// Navbar hide/show on scroll (ported from the shared jQuery dw_hidenav).
(function () {
  const navbar = document.querySelector('.navbar');
  if (!navbar) return;
  const title = document.querySelector('.site-title a');
  const headerHeight = navbar.offsetHeight;
  let previousTop = 0;
  window.addEventListener('scroll', function () {
    const currentTop = window.scrollY;
    if (currentTop < previousTop) {
      if (currentTop > 0 && navbar.classList.contains('fixed')) {
        navbar.classList.add('visible');
        if (title) title.classList.remove('light');
      } else {
        navbar.classList.remove('visible', 'fixed');
      }
    } else {
      navbar.classList.remove('visible');
      if (currentTop > headerHeight && !navbar.classList.contains('fixed')) {
        navbar.classList.add('fixed');
      }
    }
    previousTop = currentTop;
  }, { passive: true });
})();

// Gallery — scroll-snap prev/next buttons + arrow keys (replaces the BS carousel).
(function () {
  const track = document.querySelector('.dw-carousel-track');
  if (!track) return;
  const step = () =>
    track.firstElementChild
      ? track.firstElementChild.getBoundingClientRect().width
      : track.clientWidth;
  const scroll = (dir) => track.scrollBy({ left: dir * step(), behavior: 'smooth' });
  const prev = document.querySelector('.dw-carousel-prev');
  const next = document.querySelector('.dw-carousel-next');
  if (prev) prev.addEventListener('click', () => scroll(-1));
  if (next) next.addEventListener('click', () => scroll(1));
  document.addEventListener('keydown', function (e) {
    if (e.key === 'ArrowRight') scroll(1);
    else if (e.key === 'ArrowLeft') scroll(-1);
  });
})();