/* Gallery — SOTA card grid for course indices
   Theme: Quarto / Bootstrap 5.3 (data-bs-theme) */

:root {
  --g-surface: #ffffff;
  --g-surface-hover: #f8f9fa;
  --g-bg: var(--quarto-bg-primary, #ffffff);
  --g-text: #1a1a2e;
  --g-text-secondary: #5c6370;
  --g-border: #e2e5e9;
  --g-shadow: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
  --g-shadow-hover: 0 4px 12px rgba(0,0,0,0.12), 0 2px 4px rgba(0,0,0,0.08);
  --g-badge-cours-bg: #e8f0fe;
  --g-badge-cours-text: #1a56db;
  --g-badge-tp-bg: #e6f7f1;
  --g-badge-tp-text: #0d7a5f;
  --g-btn-notes-bg: #1a56db;
  --g-btn-notes-text: #ffffff;
  --g-btn-notes-hover: #1648b8;
  --g-btn-slides-bg: transparent;
  --g-btn-slides-border: #d1d5db;
  --g-btn-slides-text: #374151;
  --g-btn-slides-hover-bg: #f3f4f6;
  --g-search-bg: #f8f9fa;
  --g-search-border: #e2e5e9;
  --g-next-color: #9ca3af;
  --g-next-hover: #1a56db;
}

[data-bs-theme="dark"] {
  --g-surface: #1e1e2e;
  --g-surface-hover: #26263a;
  --g-bg: var(--quarto-bg-primary, #14141e);
  --g-text: #e2e4e9;
  --g-text-secondary: #9ca3af;
  --g-border: #2e2e42;
  --g-shadow: 0 1px 3px rgba(0,0,0,0.3), 0 1px 2px rgba(0,0,0,0.2);
  --g-shadow-hover: 0 4px 12px rgba(0,0,0,0.4), 0 2px 4px rgba(0,0,0,0.3);
  --g-badge-cours-bg: #1a2744;
  --g-badge-cours-text: #60a5fa;
  --g-badge-tp-bg: #0d2e24;
  --g-badge-tp-text: #34d399;
  --g-btn-notes-bg: #2563eb;
  --g-btn-notes-text: #ffffff;
  --g-btn-notes-hover: #3b82f6;
  --g-btn-slides-bg: transparent;
  --g-btn-slides-border: #3e3e56;
  --g-btn-slides-text: #d1d5db;
  --g-btn-slides-hover-bg: #26263a;
  --g-search-bg: #1e1e2e;
  --g-search-border: #2e2e42;
  --g-next-color: #6b7280;
  --g-next-hover: #60a5fa;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-bs-theme="light"]) {
    --g-surface: #1e1e2e;
    --g-surface-hover: #26263a;
    --g-bg: var(--quarto-bg-primary, #14141e);
    --g-text: #e2e4e9;
    --g-text-secondary: #9ca3af;
    --g-border: #2e2e42;
    --g-shadow: 0 1px 3px rgba(0,0,0,0.3), 0 1px 2px rgba(0,0,0,0.2);
    --g-shadow-hover: 0 4px 12px rgba(0,0,0,0.4), 0 2px 4px rgba(0,0,0,0.3);
    --g-badge-cours-bg: #1a2744;
    --g-badge-cours-text: #60a5fa;
    --g-badge-tp-bg: #0d2e24;
    --g-badge-tp-text: #34d399;
    --g-btn-notes-bg: #2563eb;
    --g-btn-notes-text: #ffffff;
    --g-btn-notes-hover: #3b82f6;
    --g-btn-slides-bg: transparent;
    --g-btn-slides-border: #3e3e56;
    --g-btn-slides-text: #d1d5db;
    --g-btn-slides-hover-bg: #26263a;
    --g-search-bg: #1e1e2e;
    --g-search-border: #2e2e42;
    --g-next-color: #6b7280;
    --g-next-hover: #60a5fa;
  }
}

/* Grid */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.25rem;
  padding: 1.5rem 0;
  list-style: none;
  margin: 0;
}

/* Card */
.g-card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--g-surface);
  border: 1px solid var(--g-border);
  border-radius: 12px;
  padding: 1.5rem;
  box-shadow: var(--g-shadow);
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
  color: var(--g-text);
}

.g-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--g-shadow-hover);
  background: var(--g-surface-hover);
}

/* Type badge (left border accent) */
.g-card--cours {
  border-left: 4px solid var(--g-badge-cours-text);
}

.g-card--tp {
  border-left: 4px solid var(--g-badge-tp-text);
}

.g-card__badge {
  position: absolute;
  top: 1rem;
  right: 1rem;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  padding: 0.25em 0.6em;
  border-radius: 4px;
}

.g-card--cours .g-card__badge {
  background: var(--g-badge-cours-bg);
  color: var(--g-badge-cours-text);
}

.g-card--tp .g-card__badge {
  background: var(--g-badge-tp-bg);
  color: var(--g-badge-tp-text);
}

/* Title */
.g-card__title {
  font-size: 1.1rem;
  font-weight: 600;
  margin: 0 0 0.5rem 0;
  line-height: 1.4;
  color: var(--g-text);
}

.g-card__title a {
  color: inherit;
  text-decoration: none;
}

.g-card__title a:hover {
  color: var(--g-next-hover);
}

/* Subtitle */
.g-card__subtitle {
  font-size: 0.9rem;
  color: var(--g-text-secondary);
  margin: 0 0 0.75rem 0;
  font-weight: 400;
}

/* Description */
.g-card__desc {
  font-size: 0.9rem;
  color: var(--g-text-secondary);
  margin: 0 0 1rem 0;
  line-height: 1.5;
  flex-grow: 1;
}

/* Meta (date) */
.g-card__meta {
  font-size: 0.8rem;
  color: var(--g-text-secondary);
  margin-bottom: 1rem;
  opacity: 0.8;
}

/* Action buttons */
.g-card__actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.g-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  padding: 0.5em 1em;
  font-size: 0.85rem;
  font-weight: 500;
  border-radius: 8px;
  text-decoration: none;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
  cursor: pointer;
}

.g-btn--notes {
  background: var(--g-btn-notes-bg);
  color: var(--g-btn-notes-text);
  border: 1px solid transparent;
}

.g-btn--notes:hover {
  background: var(--g-btn-notes-hover);
  color: var(--g-btn-notes-text);
}

.g-btn--slides {
  background: var(--g-btn-slides-bg);
  color: var(--g-btn-slides-text);
  border: 1px solid var(--g-btn-slides-border);
}

.g-btn--slides:hover {
  background: var(--g-btn-slides-hover-bg);
  color: var(--g-btn-slides-text);
}

/* Next indicator */
.g-card__next {
  position: absolute;
  bottom: 1rem;
  right: 1rem;
  font-size: 1.2rem;
  color: var(--g-next-color);
  text-decoration: none;
  transition: color 0.15s ease, transform 0.15s ease;
  padding: 0.25em;
}

.g-card__next:hover {
  color: var(--g-next-hover);
  transform: translateX(3px);
}

/* Search header */
.gallery-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 0;
  margin-bottom: 0.5rem;
}

.gallery-search {
  flex: 1;
  max-width: 400px;
  padding: 0.6em 1em;
  font-size: 0.9rem;
  border: 1px solid var(--g-search-border);
  border-radius: 8px;
  background: var(--g-search-bg);
  color: var(--g-text);
  outline: none;
  transition: border-color 0.15s ease;
}

.gallery-search:focus {
  border-color: var(--g-next-hover);
}

.gallery-search::placeholder {
  color: var(--g-text-secondary);
  opacity: 0.7;
}

.gallery-count {
  font-size: 0.8rem;
  color: var(--g-text-secondary);
  white-space: nowrap;
}

/* Responsive */
@media (max-width: 768px) {
  .gallery-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
    padding: 1rem 0;
  }

  .g-card {
    padding: 1.25rem;
  }

  .gallery-header {
    flex-direction: column;
    align-items: stretch;
  }

  .gallery-search {
    max-width: none;
  }
}

@media (max-width: 480px) {
  .g-card__actions {
    flex-direction: column;
  }

  .g-btn {
    justify-content: center;
    width: 100%;
  }
}