/* ============================================
   GEMCON — Gallery Page Styles
   ============================================ */

.gallery-page {
  padding-top: var(--nav-height);
}

/* --- Gallery Hero --- */
.gallery-hero {
  padding: var(--space-2xl) 0 var(--space-xl);
  text-align: center;
  background: var(--gemcon-black);
}

.gallery-hero .overline {
  margin-bottom: var(--space-sm);
  display: inline-block;
}

.gallery-hero h1 {
  margin-bottom: var(--space-md);
}

.gallery-hero p {
  max-width: 600px;
  margin: 0 auto;
  font-size: 1.1rem;
}

/* --- Gallery Filters --- */
.gallery-filters {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  flex-wrap: wrap;
  padding: var(--space-lg) 0;
  position: sticky;
  top: var(--nav-height);
  background: var(--gemcon-black);
  z-index: 10;
  border-bottom: 1px solid var(--gemcon-graphite);
}

.filter-btn {
  padding: 10px 24px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--gemcon-gray);
  border-radius: var(--radius-full);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
  background: none;
}

.filter-btn:hover {
  color: var(--gemcon-white);
  border-color: var(--gemcon-graphite);
}

.filter-btn.active {
  color: var(--gemcon-black);
  background: var(--gemcon-gold);
  border-color: var(--gemcon-gold);
}

/* --- Gallery Grid --- */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-sm);
  padding: var(--space-lg) 0 var(--section-padding);
}

.gallery-item {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 4/3;
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-out);
}

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

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

.gallery-item:hover img {
  transform: scale(1.06);
}

.gallery-item-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    0deg,
    rgba(10, 10, 10, 0.85) 0%,
    rgba(10, 10, 10, 0) 50%
  );
  opacity: 0;
  transition: opacity var(--duration-normal) var(--ease-out);
}

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

.gallery-item-info {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--space-md);
  transform: translateY(10px);
  opacity: 0;
  transition: all var(--duration-normal) var(--ease-out);
}

.gallery-item:hover .gallery-item-info {
  transform: translateY(0);
  opacity: 1;
}

.gallery-item-name {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 400;
  color: var(--gemcon-white);
  margin-bottom: 4px;
}

.gallery-item-meta {
  font-size: 0.75rem;
  color: var(--gemcon-gold);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 500;
}

.gallery-item-count {
  position: absolute;
  top: var(--space-sm);
  right: var(--space-sm);
  background: rgba(10, 10, 10, 0.7);
  backdrop-filter: blur(10px);
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  color: var(--gemcon-white);
  opacity: 0;
  transition: opacity var(--duration-fast) var(--ease-out);
}

.gallery-item:hover .gallery-item-count {
  opacity: 1;
}

/* --- Lightbox --- */
.lightbox {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(10, 10, 10, 0.97);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all var(--duration-normal) var(--ease-out);
}

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

.lightbox-close {
  position: absolute;
  top: 24px;
  right: 24px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(255,255,255,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
  border: none;
  z-index: 10;
}

.lightbox-close:hover {
  background: rgba(255,255,255,0.2);
  transform: rotate(90deg);
}

.lightbox-close svg {
  width: 20px;
  height: 20px;
  stroke: var(--gemcon-white);
  fill: none;
  stroke-width: 2;
}

.lightbox-content {
  position: relative;
  max-width: 90vw;
  max-height: 80vh;
}

.lightbox-image {
  max-width: 90vw;
  max-height: 80vh;
  object-fit: contain;
  border-radius: var(--radius-md);
}

.lightbox-info {
  position: absolute;
  bottom: -60px;
  left: 0;
  right: 0;
  text-align: center;
}

.lightbox-title {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  color: var(--gemcon-white);
  margin-bottom: 4px;
}

.lightbox-counter {
  font-size: 0.8125rem;
  color: var(--gemcon-gray);
}

.lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(255,255,255,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
  border: none;
  z-index: 10;
}

.lightbox-nav:hover {
  background: var(--gemcon-gold);
}

.lightbox-nav:hover svg {
  stroke: var(--gemcon-black);
}

.lightbox-prev {
  left: 24px;
}

.lightbox-next {
  right: 24px;
}

.lightbox-nav svg {
  width: 20px;
  height: 20px;
  stroke: var(--gemcon-white);
  fill: none;
  stroke-width: 2;
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .gallery-grid {
    grid-template-columns: 1fr;
  }

  .gallery-filters {
    gap: 6px;
    padding: var(--space-md) var(--space-sm);
  }

  .filter-btn {
    padding: 8px 16px;
    font-size: 0.6875rem;
  }

  .lightbox-nav {
    width: 40px;
    height: 40px;
  }

  .lightbox-prev {
    left: 12px;
  }

  .lightbox-next {
    right: 12px;
  }
}