/*
 * Galerie – Raster, Masonry, Albenübersicht und Lightbox.
 * Liest die Template-Tokens (--ui-*) mit Rückfall und läuft damit in jedem Template.
 * Variablen je Galerie (vom PHP gesetzt): --bg-cols, --bg-cols-t, --bg-cols-m, --bg-ratio, --bg-gap
 */

.basis-galerie {
  --_cols: var(--bg-cols-m, 2);
  --_gap: var(--bg-gap, .75rem);
  margin-block: var(--ui-space-5, 1.5rem);
}

@media (min-width: 600px) {
  .basis-galerie { --_cols: var(--bg-cols-t, 3); }
}

@media (min-width: 900px) {
  .basis-galerie { --_cols: var(--bg-cols, 4); }
}

.basis-galerie__item {
  position: relative;
  margin: 0;
  min-width: 0;
}

.basis-galerie__link {
  display: block;
  overflow: hidden;
  border-radius: var(--ui-radius, .375rem);
  background: var(--ui-color-surface, #f2f3f5);
  outline-offset: 3px;
}

.basis-galerie__link:focus-visible {
  outline: 2px solid var(--ui-color-action, #2563eb);
}

.basis-galerie__img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--ui-radius, .375rem);
  transition: transform var(--ui-duration, .3s) var(--ui-ease, ease), opacity var(--ui-duration, .3s);
}

.basis-galerie__link:hover .basis-galerie__img,
.basis-galerie__link:focus-visible .basis-galerie__img {
  transform: scale(1.04);
}

.basis-galerie__caption {
  margin-top: .4rem;
  color: var(--ui-color-text-muted, #5f6672);
  font-size: .9em;
  line-height: 1.4;
}

/* ---------- Raster: gleich große Kacheln ---------- */
.basis-galerie--raster {
  display: grid;
  grid-template-columns: repeat(var(--_cols), minmax(0, 1fr));
  gap: var(--_gap);
}

.basis-galerie--raster .basis-galerie__img {
  aspect-ratio: var(--bg-ratio, 4/3);
  object-fit: cover;
}

/* ---------- Masonry: Spalten, Bilder im eigenen Format ---------- */
.basis-galerie--masonry {
  columns: var(--_cols);
  column-gap: var(--_gap);
}

.basis-galerie--masonry .basis-galerie__item {
  break-inside: avoid;
  margin-bottom: var(--_gap);
}

/* ---------- Beschriftung auf dem Bild ---------- */
.basis-galerie--cap-overlay .basis-galerie__caption {
  position: absolute;
  inset: auto 0 0;
  margin: 0;
  padding: 1.5rem .75rem .6rem;
  border-radius: 0 0 var(--ui-radius, .375rem) var(--ui-radius, .375rem);
  background: linear-gradient(transparent, rgba(0, 0, 0, .7));
  color: #fff;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--ui-duration, .3s);
}

.basis-galerie--masonry.basis-galerie--cap-overlay .basis-galerie__caption {
  bottom: var(--_gap);
}

.basis-galerie--cap-overlay .basis-galerie__item:hover .basis-galerie__caption,
.basis-galerie--cap-overlay .basis-galerie__item:focus-within .basis-galerie__caption {
  opacity: 1;
}

@media (hover: none) {
  .basis-galerie--cap-overlay .basis-galerie__caption { opacity: 1; }
}

/* ---------- Albenübersicht ---------- */
.basis-alben {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 16rem), 1fr));
  gap: var(--ui-space-5, 1.5rem);
  margin: var(--ui-space-5, 1.5rem) 0;
  padding: 0;
  list-style: none;
}

.basis-alben__link {
  display: grid;
  gap: .25rem;
  color: inherit;
  text-decoration: none;
}

.basis-alben__img {
  width: 100%;
  height: auto;
  aspect-ratio: 4/3;
  object-fit: cover;
  border-radius: var(--ui-radius, .375rem);
  background: var(--ui-color-surface, #f2f3f5);
  transition: opacity var(--ui-duration, .3s);
}

.basis-alben__link:hover .basis-alben__img { opacity: .85; }

.basis-alben__title {
  margin-top: .4rem;
  color: var(--ui-color-heading, inherit);
  font-family: var(--ui-font-heading, inherit);
  font-size: 1.15em;
  font-weight: 600;
}

.basis-alben__link:hover .basis-alben__title { text-decoration: underline; }

.basis-alben__count {
  color: var(--ui-color-text-muted, #5f6672);
  font-size: .9em;
}

/* ---------- Lightbox ---------- */
.basis-lightbox {
  width: 100vw;
  max-width: none;
  height: 100dvh;
  max-height: none;
  margin: 0;
  padding: 0;
  border: 0;
  background: rgba(10, 10, 12, .97);
  color: #fff;
  overscroll-behavior: contain;
}

.basis-lightbox::backdrop { background: transparent; }

.basis-lightbox[open] {
  display: grid;
  grid-template-rows: auto 1fr auto;
  animation: basis-lb-in .2s ease-out;
}

@keyframes basis-lb-in {
  from { opacity: 0; }
}

.basis-lightbox__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: .5rem .75rem;
  font-size: .9rem;
}

.basis-lightbox__stage {
  --lb-gap: clamp(.5rem, 5vw, 4.5rem);
  position: relative;
  min-height: 0;
  overflow: hidden;
  touch-action: pan-y pinch-zoom;
}

/* Bild immer ganz sichtbar: absolut in der Bildfläche, in Breite und Höhe eingepasst und mittig.
   (max-height: 100% in der Rasterzeile wurde vom Browser nicht aufgelöst – Hochformate ragten über den Bildschirm.) */
.basis-lightbox__img {
  position: absolute;
  inset: 0;
  margin: auto;
  max-width: calc(100% - 2 * var(--lb-gap));
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
  user-select: none;
  transition: opacity .2s;
}

.basis-lightbox__img.is-loading { opacity: .25; }

.basis-lightbox__caption {
  min-height: 1.5rem;
  margin: 0;
  padding: .5rem 1rem 1rem;
  text-align: center;
}

.basis-lightbox__btn {
  display: grid;
  place-items: center;
  width: 2.75rem;
  height: 2.75rem;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, .12);
  color: #fff;
  font: inherit;
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
}

.basis-lightbox__btn:hover { background: rgba(255, 255, 255, .25); }

.basis-lightbox__btn:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 2px;
}

.basis-lightbox__btn svg {
  width: 1.4rem;
  height: 1.4rem;
}

.basis-lightbox__prev,
.basis-lightbox__next {
  position: absolute;
  top: 50%;
  translate: 0 -50%;
}

.basis-lightbox__prev { left: .5rem; }
.basis-lightbox__next { right: .5rem; }

.basis-lightbox[data-single] .basis-lightbox__prev,
.basis-lightbox[data-single] .basis-lightbox__next,
.basis-lightbox[data-single] .basis-lightbox__count { visibility: hidden; }

@media (max-width: 599px) {
  .basis-lightbox__prev,
  .basis-lightbox__next {
    top: auto;
    bottom: .5rem;
    translate: none;
  }
}

html:has(.basis-lightbox[open]) { overflow: hidden; }

@media (prefers-reduced-motion: reduce) {
  .basis-galerie__img,
  .basis-alben__img,
  .basis-lightbox__img { transition: none; }

  .basis-galerie__link:hover .basis-galerie__img,
  .basis-galerie__link:focus-visible .basis-galerie__img { transform: none; }

  .basis-lightbox[open] { animation: none; }
}