/*
 * WikiPortraits Photo Portal — Gallery page styles
 *
 * Contents
 * 
 * 1. Filter bar
 * 2. Gallery grid
 * 3. Photo card
 * 4. Pagination
 * 5. Empty state
 * 6. Responsive
 */

/* 1. Filter bar */
.filters-bar {
  position: sticky;
  top: 60px;
  z-index: 90;
  background: var(--clr-surface);
  border-bottom: 1px solid var(--clr-border);
  padding: .75rem 1.5rem;
  box-shadow: var(--shadow);
}
.filters-form {
  max-width: var(--container-width);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  align-items: flex-end;
}
.filter-group { display: flex; flex-direction: column; gap: .25rem; }
.filter-group--subject { flex: 1 1 200px; }
.filter-group--actions { flex-direction: row; gap: .5rem; align-items: flex-end; margin-left: auto; }
.filter-label {
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--clr-text-muted);
}
.filter-input,
.filter-select {
  height: var(--height-control);
  min-width: 140px;
  padding: 0 .75rem;
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  background: var(--clr-bg);
  color: var(--clr-text);
  font-size: .88rem;
  outline: none;
  transition: border-color var(--transition);
}
.filter-input:focus,
.filter-select:focus { border-color: var(--clr-accent); }

.autocomplete-wrap { position: relative; }
.autocomplete-list {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  right: 0;
  z-index: 200;
  display: none;
  max-height: 220px;
  overflow-y: auto;
  list-style: none;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
}
.autocomplete-list.is-open { display: block; }
.autocomplete-list-header {
  padding: .35rem .75rem;
  font-size: .75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: var(--clr-text-muted);
  border-bottom: 1px solid var(--clr-border);
  cursor: default;
}
.autocomplete-list li[role="option"] {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .5rem .75rem;
  font-size: .88rem;
  cursor: pointer;
  transition: background var(--transition);
}
.autocomplete-label { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.autocomplete-count {
  flex-shrink: 0;
  margin-left: .6rem;
  font-size: .76rem;
  font-weight: 600;
  color: var(--clr-text-muted);
  background: var(--clr-bg);
  border: 1px solid var(--clr-border);
  border-radius: 10px;
  padding: 0 .45rem;
  line-height: 1.6;
}
.autocomplete-list li[role="option"]:hover,
.autocomplete-list li[role="option"][aria-selected="true"] { background: #f0f4ff; }

/* 2. Gallery grid */
.gallery-section {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 2rem 1.5rem 3rem;
}
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
  margin-bottom: 2rem;
}

/* 3. Photo card */
.photo-card { position: relative; border-radius: var(--radius-lg); overflow: hidden; background: #222; }
.photo-card__link { display: block; text-decoration: none !important; }
.photo-card__img-wrap {
  position: relative;
  aspect-ratio: 3 / 4;
  overflow: hidden;
  background: #222;
}
.photo-card__img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .32s ease;
}
.photo-card__link:hover .photo-card__img { transform: scale(1.04); }
.photo-card__overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 1rem;
  background: linear-gradient(to top, rgba(0,0,0,.72) 0%, transparent 50%);
  opacity: 0;
  transition: opacity .22s ease;
}
.photo-card__link:hover .photo-card__overlay { opacity: 1; }
.photo-card__caption {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  color: #fff;
  font-size: .82rem;
  font-weight: 500;
  line-height: 1.3;
}
.photo-card__author {
  margin-top: .25rem;
  color: rgba(255,255,255,.65);
  font-size: .75rem;
}
.photo-card__date {
  margin-top: .15rem;
  color: rgba(255,255,255,.45);
  font-size: .72rem;
}
.photo-card__placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  background: #333;
  color: #888;
  font-size: .8rem;
}

/* 4. Pagination */
.pagination {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: .4rem;
  margin: 1.5rem 0;
}
.pagination__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: var(--height-control);
  height: var(--height-control);
  padding: 0 .6rem;
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  background: var(--clr-surface);
  color: var(--clr-text);
  font-size: .88rem;
  text-decoration: none !important;
  transition: border-color var(--transition), color var(--transition);
}
.pagination__btn:hover { border-color: var(--clr-accent); color: var(--clr-accent); }
.pagination__btn--active {
  background: var(--clr-accent);
  border-color: var(--clr-accent);
  color: #fff !important;
  font-weight: 700;
}
.result-count {
  margin-top: .5rem;
  color: var(--clr-text-muted);
  font-size: .82rem;
  text-align: center;
}

/* 5. Empty state */
.empty-state {
  padding: 4rem 1rem;
  color: var(--clr-text-muted);
  text-align: center;
}

/* 6. Responsive */
@media (max-width: 1100px) {
  .gallery-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 760px) {
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
  .gallery-grid { grid-template-columns: 1fr; }
}