/* ==========================================================================
   Alpha & Om – Galerie
   Filterbare Bildergalerie mit Lightbox. Ergänzt style.css, ändert nichts
   an den Basis-Variablen oder bestehenden Komponenten.
   ========================================================================== */

/* ---- Filter ---- */

.gallery-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: var(--space-4);
}

.filter-btn {
  font-family: var(--font-body);
  font-size: 0.9rem;
  padding: 0.5rem 1.1rem;
  border: 1px solid var(--color-line);
  border-radius: 999px;
  background: var(--color-bg);
  color: var(--color-text-soft);
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.filter-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.filter-btn.is-active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-text-on-dark);
}

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

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: var(--space-3);
}

.gallery-item {
  position: relative;
  margin: 0;
  aspect-ratio: 3 / 4;
  overflow: hidden;
  border-radius: 6px;
  border: 1px solid var(--color-line);
  background: var(--color-bg-alt);
  cursor: pointer;
}

.gallery-item img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.gallery-item:hover img {
  transform: scale(1.05);
}

.gallery-item figcaption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 0.55rem 0.8rem;
  font-size: 0.8rem;
  letter-spacing: 0.03em;
  color: var(--color-text-on-dark);
  background: linear-gradient(to top, rgba(20, 17, 13, 0.75), rgba(20, 17, 13, 0));
}

.gallery-item.is-hidden {
  display: none;
}

.gallery-note {
  margin-top: var(--space-4);
  text-align: center;
  font-size: 0.85rem;
  font-style: italic;
}

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

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(15, 13, 10, 0.94);
  padding: var(--space-3);
}

.lightbox[hidden] {
  display: none;
}

.lightbox-stage {
  max-width: min(90vw, 1100px);
  max-height: 88vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}

.lightbox-stage img {
  max-width: 100%;
  max-height: 78vh;
  object-fit: contain;
  border-radius: 4px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
}

.lightbox-caption {
  color: var(--color-text-on-dark);
  font-size: 0.9rem;
  opacity: 0.85;
  margin: 0;
}

.lightbox-close,
.lightbox-nav {
  position: absolute;
  background: none;
  border: none;
  color: var(--color-text-on-dark);
  cursor: pointer;
  line-height: 1;
}

.lightbox-close {
  top: var(--space-3);
  right: var(--space-3);
  font-size: 2.2rem;
  padding: 0.25rem 0.6rem;
}

.lightbox-nav {
  top: 50%;
  transform: translateY(-50%);
  font-size: 3rem;
  padding: 0.25rem 0.8rem;
}

.lightbox-prev {
  left: var(--space-2);
}

.lightbox-next {
  right: var(--space-2);
}

.lightbox-close:hover,
.lightbox-nav:hover {
  color: var(--color-accent);
}

@media (max-width: 600px) {
  .gallery-grid {
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  }

  .lightbox-nav {
    font-size: 2.2rem;
  }
}