/* =========================================================
   PromptVault — Gallery CSS (Cards, Grid, Lightbox, Detail)
   ========================================================= */

/* ─── Featured Strip ──────────────────────────────────────── */
.featured-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  margin-bottom: var(--space-2xl);
}

.featured-grid .gallery-card:first-child {
  grid-row: span 2;
}

@media (max-width: 900px) {
  .featured-grid {
    grid-template-columns: 1fr;
  }
  .featured-grid .gallery-card:first-child {
    grid-row: span 1;
  }
}

/* ─── Gallery Grid (Masonry-style CSS columns) ────────────── */
.gallery-grid {
  columns: 4 220px;
  column-gap: var(--space-lg);
}

@media (max-width: 1200px) { .gallery-grid { columns: 3 220px; } }
@media (max-width: 800px)  { .gallery-grid { columns: 2 180px; } }
@media (max-width: 500px)  { .gallery-grid { columns: 1; } }

/* ─── Gallery Card ────────────────────────────────────────── */
.gallery-card {
  break-inside: avoid;
  margin-bottom: var(--space-lg);
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: var(--bg-card);
  border: 1px solid var(--border);
  cursor: pointer;
  transition: var(--trans-mid);
  display: block;
  text-decoration: none;
}

.gallery-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--grad-card);
  z-index: 1;
  opacity: 0;
  transition: var(--trans-mid);
}

.gallery-card:hover {
  transform: translateY(-4px) scale(1.01);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-glow), var(--shadow-lg);
  z-index: 2;
}

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

/* ─── Card Image ──────────────────────────────────────────── */
.card-image-wrap {
  position: relative;
  overflow: hidden;
  width: 100%;
}

.card-img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* ─── Card Overlay ────────────────────────────────────────── */
.card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(8,8,16,0.95) 0%,
    rgba(8,8,16,0.5)  40%,
    rgba(8,8,16,0)    70%
  );
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: var(--space-md);
  opacity: 0;
  transition: var(--trans-mid);
  z-index: 2;
}

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

.card-overlay-title {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.95rem;
  color: white;
  margin-bottom: 6px;
  line-height: 1.3;
}

.card-overlay-prompt {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.7);
  font-family: var(--font-mono);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: var(--space-sm);
}

.card-overlay-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-xs);
}

.card-stat {
  display: flex;
  align-items: center;
  gap: 4px;
  color: rgba(255,255,255,0.7);
  font-size: 0.78rem;
  font-weight: 500;
}

.card-open-btn {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 0.3rem 0.7rem;
  background: rgba(139,92,246,0.8);
  border-radius: var(--radius-sm);
  color: white;
  font-size: 0.78rem;
  font-weight: 600;
  backdrop-filter: blur(4px);
  transition: var(--trans-fast);
}

.card-open-btn:hover {
  background: var(--primary);
  color: white;
}

/* ─── Card Meta (always visible) ─────────────────────────── */
.card-meta {
  padding: var(--space-sm) var(--space-md) var(--space-md);
  border-top: 1px solid var(--border);
}

.card-title {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-primary);
  margin-bottom: 4px;
  line-height: 1.3;
}

.card-cat {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.card-cat-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  flex-shrink: 0;
}

/* ─── Featured Badge ──────────────────────────────────────── */
.featured-badge {
  position: absolute;
  top: var(--space-sm);
  left: var(--space-sm);
  z-index: 3;
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 0.25rem 0.6rem;
  background: rgba(139,92,246,0.9);
  backdrop-filter: blur(8px);
  border-radius: var(--radius-full);
  font-size: 0.72rem;
  font-weight: 700;
  color: white;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* ─── Tool Badge ──────────────────────────────────────────── */
.tool-badge {
  position: absolute;
  top: var(--space-sm);
  right: var(--space-sm);
  z-index: 3;
  padding: 0.2rem 0.55rem;
  background: rgba(8,8,16,0.7);
  backdrop-filter: blur(8px);
  border-radius: var(--radius-full);
  font-size: 0.7rem;
  font-weight: 600;
  color: rgba(255,255,255,0.85);
  border: 1px solid rgba(255,255,255,0.1);
}

/* ─── Empty State ─────────────────────────────────────────── */
.empty-state {
  text-align: center;
  padding: var(--space-3xl) var(--space-md);
}

.empty-state-icon {
  font-size: 4rem;
  opacity: 0.3;
  margin-bottom: var(--space-md);
}

.empty-state h3 {
  color: var(--text-secondary);
  margin-bottom: var(--space-sm);
}

.empty-state p {
  font-size: 0.9rem;
}

/* ─── Lightbox ────────────────────────────────────────────── */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: var(--trans-mid);
}

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

.lightbox-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.lightbox-content {
  position: relative;
  z-index: 1;
  max-width: 90vw;
  max-height: 90vh;
  transform: scale(0.9);
  transition: var(--trans-spring);
}

.lightbox.open .lightbox-content {
  transform: scale(1);
}

.lightbox-img {
  max-width: 100%;
  max-height: 90vh;
  object-fit: contain;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  display: block;
}

.lightbox-close {
  position: absolute;
  top: -16px;
  right: -16px;
  width: 44px; height: 44px;
  display: flex; align-items: center; justify-content: center;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 50%;
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--trans-fast);
  font-size: 1.1rem;
}

.lightbox-close:hover {
  background: var(--red);
  border-color: var(--red);
  color: white;
  transform: scale(1.1);
}

/* ─── Detail Page ─────────────────────────────────────────── */
.detail-layout {
  display: grid;
  grid-template-columns: 1fr 440px;
  gap: var(--space-2xl);
  padding-top: var(--space-xl);
  padding-bottom: var(--space-3xl);
  align-items: start;
}

@media (max-width: 1100px) {
  .detail-layout {
    grid-template-columns: 1fr;
  }
}

/* ─── Detail Image ────────────────────────────────────────── */
.detail-image-wrap {
  position: sticky;
  top: calc(var(--nav-height) + var(--space-lg));
  border-radius: var(--radius-2xl);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-card);
  cursor: zoom-in;
  transition: var(--trans-mid);
}

.detail-image-wrap:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-glow);
}

.detail-img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.4s ease;
}

.detail-image-wrap:hover .detail-img {
  transform: scale(1.02);
}

@media (max-width: 1100px) {
  .detail-image-wrap {
    position: static;
    max-height: 70vh;
    overflow: hidden;
  }
  .detail-img {
    max-height: 70vh;
    object-fit: cover;
  }
}

/* ─── Detail Info Panel ───────────────────────────────────── */
.detail-panel {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.detail-breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: 0.85rem;
  color: var(--text-muted);
  flex-wrap: wrap;
}

.detail-breadcrumb a { color: var(--text-muted); }
.detail-breadcrumb a:hover { color: var(--primary-light); }
.detail-breadcrumb .sep { opacity: 0.4; }

.detail-title {
  font-size: clamp(1.5rem, 3vw, 2.2rem);
}

/* ─── Detail Meta Card ────────────────────────────────────── */
.detail-meta-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.meta-row {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  border-bottom: 1px solid var(--border);
}

.meta-row:last-child { border-bottom: none; }

.meta-key {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  width: 100px;
  flex-shrink: 0;
  padding-top: 2px;
}

.meta-val {
  font-size: 0.9rem;
  color: var(--text-secondary);
  flex: 1;
}

.meta-val strong { color: var(--text-primary); }

/* ─── Detail Actions ──────────────────────────────────────── */
.detail-actions {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

/* ─── Color Palette Display ───────────────────────────────── */
.color-palette {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.color-swatch {
  width: 30px; height: 30px;
  border-radius: var(--radius-sm);
  border: 2px solid var(--border);
  cursor: pointer;
  position: relative;
  transition: var(--trans-fast);
}

.color-swatch:hover {
  transform: scale(1.2);
  z-index: 1;
}

/* ─── Related Grid ────────────────────────────────────────── */
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-sm);
}

@media (max-width: 600px) {
  .related-grid { grid-template-columns: repeat(2, 1fr); }
}

.related-card {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 1;
  display: block;
  cursor: pointer;
  border: 1px solid var(--border);
  transition: var(--trans-mid);
}

.related-card:hover {
  border-color: var(--border-hover);
  transform: scale(1.03);
  box-shadow: var(--shadow-glow);
}

.related-card img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.related-card:hover img { transform: scale(1.08); }

.related-card-overlay {
  position: absolute;
  bottom: 0;
  inset-inline: 0;
  padding: var(--space-xs) var(--space-sm);
  background: linear-gradient(to top, rgba(0,0,0,0.85) 0%, transparent 100%);
  color: rgba(255,255,255,0.85);
  font-size: 0.72rem;
  font-weight: 500;
  opacity: 0;
  transition: var(--trans-fast);
}

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

/* ─── No Image Placeholder ────────────────────────────────── */
.img-placeholder {
  width: 100%;
  aspect-ratio: 16/9;
  background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-card-hover) 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  gap: var(--space-sm);
  font-size: 0.875rem;
}

.img-placeholder-icon { font-size: 2.5rem; opacity: 0.4; }

/* ─── Masonry Animation ───────────────────────────────────── */
.gallery-card {
  animation: card-in 0.5s cubic-bezier(0.4, 0, 0.2, 1) both;
}

.gallery-card:nth-child(1)  { animation-delay: 0.05s; }
.gallery-card:nth-child(2)  { animation-delay: 0.10s; }
.gallery-card:nth-child(3)  { animation-delay: 0.15s; }
.gallery-card:nth-child(4)  { animation-delay: 0.20s; }
.gallery-card:nth-child(5)  { animation-delay: 0.25s; }
.gallery-card:nth-child(6)  { animation-delay: 0.30s; }
.gallery-card:nth-child(7)  { animation-delay: 0.35s; }
.gallery-card:nth-child(8)  { animation-delay: 0.40s; }
.gallery-card:nth-child(n+9){ animation-delay: 0.45s; }

/* ─── Search Result Highlight ─────────────────────────────── */
mark {
  background: rgba(139,92,246,0.25);
  color: var(--primary-light);
  border-radius: 3px;
  padding: 0 2px;
}

/* ─── View Mode Toggle ────────────────────────────────────── */
.view-toggle {
  display: flex;
  gap: 4px;
}

.view-btn {
  width: 32px; height: 32px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--trans-fast);
}

.view-btn.active, .view-btn:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: white;
}

/* ─── List View ───────────────────────────────────────────── */
.gallery-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.gallery-list .gallery-card {
  display: grid;
  grid-template-columns: 160px 1fr;
  break-inside: unset;
  margin-bottom: 0;
}

.gallery-list .card-image-wrap {
  height: 120px;
}

.gallery-list .card-img {
  height: 100%;
  object-fit: cover;
}

.gallery-list .card-overlay {
  padding: var(--space-sm);
}

/* ─── AJAX Loading Spinner ────────────────────────────────── */
.loading-spinner {
  display: flex;
  justify-content: center;
  padding: var(--space-2xl);
}

.spinner {
  width: 40px; height: 40px;
  border: 3px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}