/* 雲上美術館 - Gallery Component Styles (海報風格) */

/* === Gallery Container === */
.gallery-wrapper {
  position: relative;
  width: 100%;
}

/* === Exhibition Grid === */
.exhibition-grid {
  max-width: var(--container-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-md);
}

/* === Card Styles === */
.gallery-card {
  display: block;
  border-radius: 4px;
  overflow: hidden;
  background: var(--color-paper);
  border: 1px solid var(--color-border);
  transition: transform 0.3s, box-shadow 0.3s;
  text-decoration: none;
  position: relative;
}

.gallery-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 60px rgba(93, 78, 55, 0.15);
  border-color: var(--color-brown-light);
}

/* 印章裝飾 */
.gallery-card::after {
  content: '展';
  position: absolute;
  right: 12px;
  bottom: 12px;
  width: 36px;
  height: 36px;
  background: var(--color-seal);
  color: var(--color-paper);
  font-size: 20px;
  font-weight: bold;
  text-align: center;
  line-height: 36px;
  border-radius: 3px;
  opacity: 0.15;
  font-family: 'SimSun', 'STSong', serif;
  pointer-events: none;
}

.gallery-card-image {
  aspect-ratio: 16/10;
  overflow: hidden;
  position: relative;
  background: var(--color-paper-bg);
}

.gallery-card-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
  transition: transform 0.5s ease;
}

.gallery-card:hover .gallery-card-image img {
  transform: scale(1.05);
}

.gallery-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(61, 61, 61, 0.5) 0%,
    rgba(61, 61, 61, 0.2) 40%,
    transparent 60%
  );
  opacity: 0;
  transition: opacity 0.3s;
}

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

.gallery-card-content {
  padding: var(--spacing-sm);
  background: var(--color-paper);
}

.gallery-card-title {
  font-size: 1.1rem;
  color: var(--color-ink);
  margin-bottom: 8px;
}

.gallery-card-title .zh {
  font-weight: 600;
  letter-spacing: 1px;
}

.gallery-card-meta {
  font-size: 0.85rem;
  color: var(--color-ink-lighter);
}

/* === Masonry Grid (for artworks) === */
.masonry-grid {
  max-width: var(--container-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: var(--spacing-md);
  align-items: start;
}

.masonry-item {
  background: var(--color-paper);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  overflow: hidden;
  transition: transform 0.3s, box-shadow 0.3s;
  position: relative;
  display: block;
  text-decoration: none;
  color: inherit;
}

.masonry-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(93, 78, 55, 0.12);
  border-color: var(--color-brown-light);
}

/* 印章裝飾 */
.masonry-item::after {
  content: '藏';
  position: absolute;
  right: 8px;
  bottom: 8px;
  width: 28px;
  height: 28px;
  background: var(--color-seal);
  color: var(--color-paper);
  font-size: 16px;
  font-weight: bold;
  text-align: center;
  line-height: 28px;
  border-radius: 3px;
  opacity: 0.12;
  font-family: 'SimSun', 'STSong', serif;
  pointer-events: none;
  z-index: 2;
}

.masonry-image {
  position: relative;
  background: var(--color-paper-bg);
}

.masonry-image img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: contain;
}

/* Aspect ratio variations */
.masonry-item.tall .masonry-image {
  aspect-ratio: 3/4;
}

.masonry-item.wide .masonry-image {
  aspect-ratio: 4/3;
}

.masonry-item.square .masonry-image {
  aspect-ratio: 1/1;
}

.masonry-info {
  padding: var(--spacing-sm);
  background: var(--color-paper);
}

.masonry-title {
  font-size: 1rem;
  margin-bottom: 4px;
}

.masonry-title .zh {
  font-weight: 500;
  letter-spacing: 1px;
}

.masonry-author {
  font-size: 0.85rem;
  color: var(--color-ink-lighter);
}

/* === Filter Bar === */
.filter-bar {
  max-width: var(--container-width);
  margin: 0 auto var(--spacing-md);
  padding: var(--spacing-sm) 0;
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.filter-btn {
  padding: 10px 20px;
  background: var(--color-paper);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  font-family: var(--font-zh);
  font-size: 0.85rem;
  color: var(--color-ink);
  cursor: pointer;
  transition: background 0.3s, border-color 0.3s, color 0.3s;
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--color-brown);
  border-color: var(--color-brown);
  color: var(--color-paper);
}

/* === Pagination === */
.pagination {
  max-width: var(--container-width);
  margin: var(--spacing-lg) auto 0;
  display: flex;
  justify-content: center;
  gap: 8px;
}

.pagination-btn {
  width: 40px;
  height: 40px;
  background: var(--color-paper);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-family: var(--font-zh);
  color: var(--color-ink);
  transition: background 0.3s, border-color 0.3s, color 0.3s;
}

.pagination-btn:hover,
.pagination-btn.active {
  background: var(--color-brown);
  border-color: var(--color-brown);
  color: var(--color-paper);
}

.pagination-btn.disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* === Artwork Detail Page === */
.artwork-detail-hero {
  padding: calc(var(--header-height) + var(--spacing-xl)) var(--container-padding) var(--spacing-xl);
  background: var(--color-paper-bg);
  position: relative;
}

.artwork-detail-content {
  max-width: var(--container-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
  align-items: start;
}

.artwork-detail-image {
  background: var(--color-paper);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  overflow: hidden;
  position: relative;
}

.artwork-detail-image img {
  width: 100%;
  height: auto;
  object-fit: contain;
}

.artwork-detail-info {
  padding: var(--spacing-md);
}

.artwork-detail-title {
  font-size: 1.75rem;
  color: var(--color-brown);
  margin-bottom: var(--spacing-sm);
  letter-spacing: 2px;
}

.artwork-detail-title .zh {
  font-weight: 600;
}

.artwork-detail-meta {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.meta-item {
  display: flex;
  gap: var(--spacing-sm);
}

.meta-label {
  font-family: var(--font-zh);
  font-size: 0.9rem;
  color: var(--color-ink-lighter);
  min-width: 80px;
}

.meta-value {
  font-family: var(--font-zh);
  font-size: 1rem;
  color: var(--color-ink);
}

.artwork-detail-desc {
  font-size: 1rem;
  line-height: 2;
  color: var(--color-ink);
}

/* === Responsive === */
@media (max-width: 768px) {
  .exhibition-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-sm);
  }
  
  .masonry-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-sm);
  }
  
  .filter-bar {
    justify-content: center;
  }
  
  .filter-btn {
    flex: 1;
    max-width: 120px;
  }
  
  .artwork-detail-content {
    grid-template-columns: 1fr;
  }
  
  .artwork-detail-hero {
    padding-top: calc(var(--header-height) + var(--spacing-md));
  }
}

@media (max-width: 480px) {
  .masonry-grid {
    grid-template-columns: 1fr;
  }
  
  .gallery-card-title {
    font-size: 1rem;
  }
  
  .artwork-detail-title {
    font-size: 1.5rem;
  }
}

/* === Exhibition Hero === */
.exhibition-hero {
  position: relative;
  width: 100%;
  max-height: 60vh;
  overflow: hidden;
}

.exhibition-hero .hero-image {
  width: 100%;
  max-height: 60vh;
  overflow: hidden;
}

.exhibition-hero .hero-image img {
  width: 100%;
  height: auto;
  max-height: 60vh;
  object-fit: cover;
  object-position: center;
}

.exhibition-hero .hero-content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--spacing-lg) var(--spacing-md);
  background: linear-gradient(to top, rgba(61, 61, 61, 0.7) 0%, transparent 100%);
  color: var(--color-paper);
}

/* === Extra Responsive for Exhibition Hero === */
@media (max-width: 768px) {
  .exhibition-hero {
    max-height: 40vh;
  }
  
  .exhibition-hero .hero-image {
    max-height: 40vh;
  }
  
  .exhibition-hero .hero-image img {
    max-height: 40vh;
  }
  
  .exhibition-hero .hero-content {
    padding: var(--spacing-md) var(--spacing-sm);
  }
}

@media (max-width: 480px) {
  .exhibition-hero {
    max-height: 30vh;
  }
  
  .exhibition-hero .hero-image {
    max-height: 30vh;
  }
  
  .exhibition-hero .hero-image img {
    max-height: 30vh;
  }
}