/* ====================================================================
 * Zensical Image Gallery – Styles
 * ==================================================================== */

/* ------------------------------ Grid ------------------------------ */

.zen-gallery {
  --zen-gallery-gap: 0.75rem;
  --zen-gallery-min-size: 180px;
  --zen-gallery-radius: 8px;

  display: grid;
  grid-template-columns: repeat(
    auto-fill,
    minmax(var(--zen-gallery-min-size), 1fr)
  );
  gap: var(--zen-gallery-gap);
  margin: 1rem 0;
}

/* Feste Spaltenanzahl via data-columns="n" */
.zen-gallery--fixed-columns {
  grid-template-columns: repeat(var(--zen-gallery-columns, 3), 1fr);
}

.zen-gallery__item {
  position: relative;
  margin: 0;
  overflow: hidden;
  border-radius: var(--zen-gallery-radius);
  cursor: pointer;
  background: rgba(0, 0, 0, 0.05);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.zen-gallery__item:hover,
.zen-gallery__item:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.25);
  outline: none;
}

.zen-gallery__thumb {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  opacity: 0;
  transition: transform 0.3s ease, opacity 0.4s ease;
}

/* Sanft einblenden, sobald das (lazy geladene) Thumbnail da ist */
.zen-gallery__thumb--loaded {
  opacity: 1;
}

.zen-gallery__item:hover .zen-gallery__thumb {
  transform: scale(1.05);
}

.zen-gallery__caption {
  position: absolute;
  inset: auto 0 0 0;
  padding: 0.4rem 0.6rem;
  font-size: 0.72rem;
  line-height: 1.3;
  color: #fff;
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.7));
  pointer-events: none;
}

.zen-gallery__error {
  grid-column: 1 / -1;
  padding: 0.75rem 1rem;
  border-left: 4px solid #e53935;
  background: rgba(229, 57, 53, 0.1);
  border-radius: 4px;
  font-size: 0.8rem;
}

/* ---------------------------- Lightbox ---------------------------- */

.zen-lightbox {
  position: fixed;
  inset: 0;
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.92);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, visibility 0.25s ease;
}

.zen-lightbox--open {
  opacity: 1;
  visibility: visible;
}

.zen-lightbox-no-scroll {
  overflow: hidden;
}

.zen-lightbox__figure {
  margin: 0;
  max-width: 90vw;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.zen-lightbox__img {
  max-width: 90vw;
  max-height: 82vh;
  object-fit: contain;
  border-radius: 4px;
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.6);
}

.zen-lightbox__caption {
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.85rem;
  text-align: center;
}

.zen-lightbox__close,
.zen-lightbox__nav {
  position: absolute;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  cursor: pointer;
  border-radius: 50%;
  transition: background 0.2s ease;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.zen-lightbox__close:hover,
.zen-lightbox__nav:hover {
  background: rgba(255, 255, 255, 0.25);
}

.zen-lightbox__close {
  top: 1rem;
  right: 1rem;
  width: 2.75rem;
  height: 2.75rem;
  font-size: 1.75rem;
  line-height: 1;
}

.zen-lightbox__nav {
  top: 50%;
  transform: translateY(-50%);
  width: 3rem;
  height: 3rem;
  font-size: 1.25rem;
}

.zen-lightbox__nav--prev { left: 1rem; }
.zen-lightbox__nav--next { right: 1rem; }

.zen-lightbox__counter {
  position: absolute;
  bottom: 1rem;
  left: 50%;
  transform: translateX(-50%);
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.8rem;
  letter-spacing: 0.05em;
}

/* --------------------------- Responsive --------------------------- */

@media (max-width: 600px) {
  .zen-gallery {
    --zen-gallery-min-size: 130px;
    --zen-gallery-gap: 0.5rem;
  }

  .zen-lightbox__nav {
    width: 2.5rem;
    height: 2.5rem;
  }

  .zen-lightbox__nav--prev { left: 0.5rem; }
  .zen-lightbox__nav--next { right: 0.5rem; }
}

/* ------------------------ Dark-Mode (Material/Zensical) ----------- */

[data-md-color-scheme="slate"] .zen-gallery__item {
  background: rgba(255, 255, 255, 0.05);
}