/* ==========================================================================
   Gallery — filterable grid + custom lightbox
   ========================================================================== */

.gallery-filters {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-3);
  margin-bottom: var(--space-8);
}

.gallery-filter {
  padding: 0.6em 1.4em;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-pill);
  font-size: var(--fs-xs);
  font-weight: 500;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--text-muted);
  transition: background var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease),
    border-color var(--dur-fast) var(--ease);
}

.gallery-filter:hover {
  border-color: var(--gold);
  color: var(--gold-light);
}

.gallery-filter.is-active {
  background: var(--gold);
  border-color: var(--gold);
  color: var(--on-gold);
}

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

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  grid-auto-rows: 150px;
  gap: var(--space-3);
}

.gallery-item.is-tall {
  grid-row: span 2;
}

.gallery-item {
  position: relative;
  display: block;
  width: 100%;
  height: 100%;
  overflow: hidden;
  border-radius: var(--radius-md);
  background: var(--surface);
}

.gallery-item[hidden] {
  display: none;
}

@keyframes gallery-fade-in {
  from {
    opacity: 0;
    transform: scale(0.96);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.gallery-item.just-shown {
  animation: gallery-fade-in var(--dur-slow) var(--ease);
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--dur-slow) var(--ease);
}

.gallery-item:hover img,
.gallery-item:focus-visible img {
  transform: scale(1.08);
}

.gallery-item-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  align-items: flex-start;
  gap: var(--space-2);
  padding: var(--space-4);
  background: linear-gradient(to top, rgba(10, 8, 6, 0.85) 0%, rgba(10, 8, 6, 0.05) 65%);
  color: var(--text);
  opacity: 0;
  transition: opacity var(--dur-base) var(--ease);
  text-align: left;
}

.gallery-item:hover .gallery-item-overlay,
.gallery-item:focus-visible .gallery-item-overlay {
  opacity: 1;
}

.gallery-item-overlay svg {
  color: var(--gold-light);
}

.gallery-item-caption {
  font-size: var(--fs-xs);
  letter-spacing: var(--tracking-wide);
}

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

.lightbox {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-6);
  background: var(--overlay-strong);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity var(--dur-base) var(--ease), visibility 0s var(--dur-base);
}

.lightbox.is-open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transition-delay: 0s;
}

.lightbox-stage {
  max-width: min(92vw, 900px);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
}

.lightbox-stage img {
  max-width: 100%;
  max-height: 72vh;
  width: auto;
  object-fit: contain;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  transform: scale(0.97);
  transition: opacity var(--dur-base) var(--ease), transform var(--dur-base) var(--ease);
}

.lightbox.is-open .lightbox-stage img.is-loaded {
  opacity: 1;
  transform: scale(1);
}

.lightbox-caption {
  color: var(--text-muted);
  font-size: var(--fs-sm);
  text-align: center;
}

.lightbox-close,
.lightbox-nav {
  position: fixed;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid var(--border-strong);
  background: rgba(20, 17, 14, 0.6);
  color: var(--text);
  backdrop-filter: blur(6px);
  transition: background var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease),
    border-color var(--dur-fast) var(--ease);
}

.lightbox-close:hover,
.lightbox-nav:hover {
  background: var(--gold);
  border-color: var(--gold);
  color: var(--on-gold);
}

.lightbox-close {
  top: var(--space-4);
  right: var(--space-4);
}

.lightbox-prev {
  top: 50%;
  left: var(--space-3);
  transform: translateY(-50%);
}

.lightbox-next {
  top: 50%;
  right: var(--space-3);
  transform: translateY(-50%);
}

@media (min-width: 640px) {
  .gallery-grid {
    grid-template-columns: repeat(3, 1fr);
    grid-auto-rows: 180px;
  }
}

@media (min-width: 1024px) {
  .gallery-grid {
    grid-template-columns: repeat(4, 1fr);
    grid-auto-rows: 200px;
    gap: var(--space-4);
  }

  .lightbox-close {
    top: var(--space-6);
    right: var(--space-6);
    width: 52px;
    height: 52px;
  }

  .lightbox-prev {
    left: var(--space-6);
    width: 52px;
    height: 52px;
  }

  .lightbox-next {
    right: var(--space-6);
    width: 52px;
    height: 52px;
  }
}