/* ============================================================
   GALLERY — Photo grid, infinite scroll, lightbox, filters
   ============================================================ */

/* --- Filter Bar --- */
.filter-bar {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
  padding-block: var(--space-8);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--space-12);
}

.filter-bar__btn {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  font-weight: 400;
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--color-text-muted);
  background: transparent;
  border: 1px solid transparent;
  padding: 0.45rem 1rem;
  cursor: pointer;
  transition:
    color var(--transition-base),
    border-color var(--transition-base),
    background var(--transition-base);
}

.filter-bar__btn:hover {
  color: var(--color-text);
  border-color: var(--color-border-light);
}

.filter-bar__btn.active {
  color: var(--color-bg);
  background: var(--color-gold);
  border-color: var(--color-gold);
}

.filter-bar__count {
  margin-left: auto;
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  letter-spacing: var(--tracking-wide);
}

/* --- Dropdown filter bar (collages page) --- */
.filter-bar--dropdowns {
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
  border-bottom: 1px solid var(--color-border);
  padding-block: var(--space-8);
  margin-bottom: var(--space-12);
}

.filter-dropdown {
  position: relative;
}

.filter-dropdown__trigger {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-sans);
  font-size: 0.7rem;
  font-weight: 400;
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--color-text-muted);
  background: rgba(26, 26, 26, 0.45);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--color-border);
  padding: 0.45rem 0.85rem;
  cursor: pointer;
  white-space: nowrap;
  min-width: 130px;
  transition:
    color var(--transition-base),
    border-color var(--transition-base),
    background var(--transition-base);
}

.filter-dropdown__trigger:hover {
  color: var(--color-text);
  border-color: var(--color-border-light);
}

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

.filter-dropdown__label {
  color: var(--color-text-faint);
  flex-shrink: 0;
}

.filter-dropdown__label::after {
  content: ":";
}

.filter-dropdown__value {
  flex: 1;
  color: var(--color-text);
}

.filter-dropdown__trigger.active .filter-dropdown__value {
  color: var(--color-gold);
}

.filter-dropdown__chevron {
  width: 11px;
  height: 11px;
  flex-shrink: 0;
  opacity: 0.5;
  transition: transform var(--transition-base);
}

.filter-dropdown.open .filter-dropdown__chevron {
  transform: rotate(180deg);
}

.filter-dropdown__list {
  display: none;
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  min-width: 100%;
  background: rgba(10, 10, 10, 0.8);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--color-border);
  list-style: none;
  margin: 0;
  padding: var(--space-1) 0;
  z-index: 200;
  max-height: 260px;
  overflow-y: auto;
}

.filter-dropdown.open .filter-dropdown__list {
  display: block;
}

.filter-dropdown__option {
  padding: 0.5rem 1rem;
  font-family: var(--font-sans);
  font-size: 0.7rem;
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--color-text-muted);
  cursor: pointer;
  transition:
    color var(--transition-base),
    background var(--transition-base);
}

.filter-dropdown__option:hover {
  color: var(--color-text);
  background: rgba(255, 255, 255, 0.04);
}

.filter-dropdown__option.active {
  color: var(--color-gold);
}

/* Multi-select: checkbox indicator per option */
.filter-dropdown--multi .filter-dropdown__option {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.filter-dropdown--multi .filter-dropdown__option::before {
  content: "";
  flex-shrink: 0;
  width: 9px;
  height: 9px;
  border: 1px solid var(--color-border-light);
  border-radius: 2px;
  transition:
    background var(--transition-base),
    border-color var(--transition-base);
}

.filter-dropdown--multi .filter-dropdown__option.active::before {
  background: var(--color-gold);
  border-color: var(--color-gold);
}

/* --- Gallery Grid --- */
.gallery-grid {
  columns: 3;
  column-gap: 6px;
}

.gallery-grid__item {
  position: relative;
  overflow: hidden;
  cursor: pointer;
  background: var(--color-surface);
  break-inside: avoid;
  margin-bottom: 6px;
  width: 100%;
}

.gallery-grid__item img {
  width: 100%;
  height: auto;
  display: block;
  transition:
    transform 0.6s cubic-bezier(0.22, 1, 0.36, 1),
    filter var(--transition-slow);
  will-change: transform;
}

.gallery-grid__item:hover img {
  transform: scale(1.05);
  filter: brightness(0.85);
}

/* --- Hover Overlay --- */
.gallery-grid__item::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.5) 0%, transparent 50%);
  opacity: 0;
  transition: opacity var(--transition-base);
  pointer-events: none;
}

.gallery-grid__item:hover::after {
  opacity: 1;
}

/* Gold border glow on hover */
.gallery-grid__item::before {
  content: "";
  position: absolute;
  inset: 0;
  border: 1px solid var(--color-gold);
  opacity: 0;
  z-index: 2;
  transition: opacity var(--transition-base);
  pointer-events: none;
}

.gallery-grid__item:hover::before {
  opacity: 0.5;
}

/* Expand icon */
.gallery-grid__expand {
  position: absolute;
  bottom: var(--space-4);
  right: var(--space-4);
  z-index: 3;
  width: 32px;
  height: 32px;
  background: rgba(0, 0, 0, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: translateY(4px);
  transition:
    opacity var(--transition-base),
    transform var(--transition-base);
  pointer-events: none;
}

.gallery-grid__item:hover .gallery-grid__expand {
  opacity: 1;
  transform: translateY(0);
}

.gallery-grid__expand svg {
  width: 14px;
  height: 14px;
  stroke: var(--color-text);
  fill: none;
  stroke-width: 1.5;
}

/* Caption overlay */
.gallery-grid__caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--space-4);
  z-index: 3;
  transform: translateY(4px);
  opacity: 0;
  transition:
    opacity var(--transition-base),
    transform var(--transition-base);
}

.gallery-grid__item:hover .gallery-grid__caption {
  opacity: 1;
  transform: translateY(0);
}

.gallery-grid__caption-text {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: var(--text-sm);
  color: var(--color-text);
}

/* Skeleton placeholder */
.gallery-grid__item.loading {
  cursor: default;
}

.gallery-grid__item.loading .skeleton {
  width: 100%;
  height: 100%;
  min-height: 250px;
}

/* Hidden items (filter) */
.gallery-grid__item[hidden] {
  display: none;
}

/* --- Lightbox --- */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: var(--z-lightbox);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
}

.lightbox.active {
  opacity: 1;
  pointer-events: auto;
}

.lightbox__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.95);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  cursor: pointer;
}

.lightbox__content {
  position: relative;
  z-index: 1;
  max-width: min(1100px, 90vw);
  max-height: 85vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.lightbox__img {
  max-width: 100%;
  max-height: 85vh;
  object-fit: contain;
  display: block;
  border: 1px solid var(--color-border);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.8);
  transform: scale(0.96);
  transition: transform var(--transition-base);
}

.lightbox.active .lightbox__img {
  transform: scale(1);
}

.lightbox__close {
  position: absolute;
  top: -48px;
  right: 0;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--color-text-muted);
  transition: color var(--transition-base);
}

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

.lightbox__close svg {
  width: 22px;
  height: 22px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.5;
}

.lightbox__nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  background: rgba(10, 10, 10, 0.7);
  border: 1px solid var(--color-border-light);
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition:
    background var(--transition-base),
    color var(--transition-base);
  z-index: 2;
}

.lightbox__nav:hover {
  background: var(--color-gold);
  color: var(--color-bg);
  border-color: var(--color-gold);
}

.lightbox__nav svg {
  width: 20px;
  height: 20px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.5;
}

.lightbox__nav--prev {
  left: -60px;
}
.lightbox__nav--next {
  right: -60px;
}

.lightbox__counter {
  position: absolute;
  bottom: -40px;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-wider);
  color: var(--color-text-faint);
}

/* Caption in lightbox */
.lightbox__caption {
  position: absolute;
  bottom: -36px;
  left: 0;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* --- Gallery Section wrapper (homepage preview) --- */
.gallery-preview {
  padding-block: var(--section-pad-y);
}

.gallery-preview__grid {
  columns: 3;
  column-gap: 6px;
  margin-bottom: var(--space-12);
}

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

  .lightbox__nav--prev {
    left: -50px;
  }
  .lightbox__nav--next {
    right: -50px;
  }
}

@media (max-width: 768px) {
  .gallery-grid {
    column-gap: 4px;
  }

  .gallery-grid__item {
    margin-bottom: 4px;
  }

  .filter-bar {
    gap: var(--space-2);
  }

  .lightbox__nav--prev {
    left: var(--space-4);
  }
  .lightbox__nav--next {
    right: var(--space-4);
  }
  .lightbox__close {
    top: var(--space-4);
    right: var(--space-4);
    position: fixed;
  }
}

@media (max-width: 480px) {
  .gallery-grid,
  .gallery-preview__grid {
    columns: 1;
  }
}