/* Filter tabs */
.gallery-filter {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  flex-wrap: wrap;
  margin-bottom: var(--space-lg);
  border-bottom: 1px solid var(--color-border);
}

.filter-btn {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 400;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  padding: var(--space-sm) var(--space-md);
  color: var(--color-text-muted);
  border-bottom: 2px solid transparent;
  transition: color var(--transition-fast), border-color var(--transition-fast);
  margin-bottom: -1px;
  background: none;
  cursor: pointer;
}

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

.filter-btn.active {
  color: var(--color-gold);
  border-bottom-color: var(--color-gold);
}

/* Gallery grid */
.gallery-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}

@media (min-width: 600px) {
  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .gallery-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Gallery item */
.gallery-item {
  cursor: pointer;
  overflow: hidden;
  background: var(--color-bg-dark);
  border: 1px solid var(--color-border);
  transition: transform var(--transition-slow) var(--easing-elegant),
              box-shadow var(--transition-slow) var(--easing-elegant),
              border-color var(--transition-slow);
}

.gallery-item:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 40px rgba(18, 8, 30, 0.10);
  border-top-color: var(--color-gold);
}

.gallery-item__image-wrap {
  aspect-ratio: 4 / 5;
  overflow: hidden;
  position: relative;
}

.gallery-item:nth-child(3n+2) .gallery-item__image-wrap {
  aspect-ratio: 5 / 4;
}

.gallery-item__image-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow) var(--easing-elegant);
}

.gallery-item:hover .gallery-item__image-wrap img {
  transform: scale(1.04);
}

.gallery-item__image-wrap .artwork-placeholder {
  position: absolute;
  inset: 0;
}

.gallery-item__overlay {
  position: absolute;
  inset: 0;
  background: rgba(18, 8, 30, 0);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition-base);
}

.gallery-item:hover .gallery-item__overlay {
  background: rgba(18, 8, 30, 0.12);
}

.gallery-item__zoom {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: scale(0.8);
  transition: opacity var(--transition-base), transform var(--transition-base);
}

.gallery-item__zoom svg {
  width: 20px;
  height: 20px;
  stroke: var(--color-text);
  fill: none;
}

.gallery-item:hover .gallery-item__zoom {
  opacity: 1;
  transform: scale(1);
}

figcaption {
  padding: var(--space-sm) var(--space-md);
  border-top: 1px solid var(--color-border);
}

.artwork-title {
  display: block;
  font-family: var(--font-display);
  font-style: normal;
  font-weight: 300;
  font-size: var(--text-base);
  letter-spacing: 0.02em;
  color: var(--color-text);
  margin-bottom: 0.25rem;
}

.artwork-meta {
  display: block;
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
}

.artwork-series {
  display: inline-block;
  font-size: var(--text-xs);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: 0.25rem;
}

/* Lightbox */
#lightbox {
  position: fixed;
  inset: 0;
  z-index: 9000;
  background: rgba(18, 8, 30, 0.94);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-base);
}

#lightbox[hidden] {
  display: none;
}

.lightbox__close {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(253, 251, 255, 0.6);
  font-size: 1.5rem;
  font-weight: 300;
  transition: color var(--transition-fast);
  z-index: 1;
}

.lightbox__close:hover {
  color: var(--color-white);
}

.lightbox__nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(253, 251, 255, 0.5);
  border: 1px solid rgba(253, 251, 255, 0.15);
  transition: color var(--transition-fast), border-color var(--transition-fast);
  z-index: 1;
}

.lightbox__nav:hover {
  color: var(--color-white);
  border-color: rgba(253, 251, 255, 0.4);
}

.lightbox__prev { left: var(--space-md); }
.lightbox__next { right: var(--space-md); }

.lightbox__nav svg {
  width: 22px;
  height: 22px;
  stroke: currentColor;
  fill: none;
}

.lightbox__stage {
  width: 90vw;
  max-width: 900px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
}

.lightbox__image-wrap {
  width: 100%;
  max-height: 75vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  transition: opacity 0.25s ease;
}

.lightbox__image-wrap.fading {
  opacity: 0;
}

.lightbox__image-wrap img {
  max-width: 100%;
  max-height: 75vh;
  object-fit: contain;
}

.lightbox__image-wrap .artwork-placeholder {
  width: 100%;
  aspect-ratio: 4 / 5;
  max-height: 75vh;
}

.lightbox__caption {
  text-align: center;
}

.lightbox__title {
  font-family: var(--font-display);
  font-style: normal;
  font-weight: 200;
  font-size: var(--text-xl);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-white);
  margin-bottom: 0.25rem;
}

.lightbox__meta {
  font-size: var(--text-sm);
  letter-spacing: 0.08em;
  color: rgba(253, 251, 255, 0.5);
}

.lightbox__counter {
  position: absolute;
  bottom: var(--space-md);
  left: 50%;
  transform: translateX(-50%);
  font-size: var(--text-xs);
  letter-spacing: 0.2em;
  color: rgba(253, 251, 255, 0.35);
}