/* ==========================================================================
   CulturInfo UI Components (Cards, Modals, Filters, AI Course, PWA)
   ========================================================================== */

/* ---------------- Hero Section ---------------- */
.hero-section {
  padding: var(--space-xl) 0 var(--space-lg);
  position: relative;
}

.hero-banner {
  background: linear-gradient(135deg, rgba(124, 58, 237, 0.25) 0%, rgba(255, 94, 98, 0.2) 100%), var(--bg-surface);
  border: 1px solid var(--bg-surface-glass-border);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl) var(--space-xl);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(8px);
  color: var(--accent-gold);
  font-size: 0.85rem;
  font-weight: 700;
  width: fit-content;
}

.hero-title {
  font-size: 2.25rem;
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.5px;
}

.hero-subtitle {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 620px;
}

/* ---------------- Search & Filter Bar ---------------- */
.search-filter-section {
  margin-top: -1.5rem;
  position: relative;
  z-index: 10;
  margin-bottom: var(--space-2xl);
}

.search-box-card {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--bg-surface-glass-border);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.search-input-row {
  display: flex;
  gap: var(--space-sm);
  align-items: center;
}

.search-input-wrapper {
  flex: 1;
  position: relative;
  display: flex;
  align-items: center;
}

.search-input-icon {
  position: absolute;
  left: 1rem;
  color: var(--text-muted);
  font-size: 1.1rem;
}

.search-input {
  width: 100%;
  padding: 0.85rem 1rem 0.85rem 2.75rem;
  background: var(--bg-surface);
  border: 1px solid var(--bg-surface-glass-border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.95rem;
  font-family: inherit;
  outline: none;
  transition: all var(--transition-fast);
}

.search-input:focus {
  border-color: var(--primary-500);
  box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.25);
}

.btn-search {
  padding: 0.85rem 1.5rem;
  background: var(--grad-hero);
  color: white;
  border: none;
  border-radius: var(--radius-md);
  font-weight: 700;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  transition: transform var(--transition-fast);
}

.btn-search:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

/* Category Pill Tabs */
.category-scroll-container {
  display: flex;
  gap: var(--space-xs);
  overflow-x: auto;
  padding-bottom: var(--space-xs);
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 255, 255, 0.1) transparent;
}

.category-pill {
  white-space: nowrap;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-full);
  background: var(--bg-surface);
  border: 1px solid var(--bg-surface-glass-border);
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.category-pill:hover {
  color: var(--text-primary);
  border-color: rgba(255, 255, 255, 0.25);
}

.category-pill.active {
  background: var(--primary-600);
  color: white;
  border-color: var(--primary-500);
  box-shadow: 0 2px 10px rgba(124, 58, 237, 0.35);
}

/* Secondary Filters (Region, Sorting, Free Toggle) */
.filter-sub-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-sm);
  padding-top: var(--space-xs);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.filter-select-group {
  display: flex;
  gap: var(--space-sm);
  align-items: center;
  flex-wrap: wrap;
}

.custom-select {
  background: var(--bg-surface);
  border: 1px solid var(--bg-surface-glass-border);
  color: var(--text-primary);
  padding: 0.45rem 0.85rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-family: inherit;
  outline: none;
  cursor: pointer;
}

.toggle-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-surface);
  border: 1px solid var(--bg-surface-glass-border);
  padding: 0.45rem 0.85rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  color: var(--text-secondary);
  cursor: pointer;
  user-select: none;
  transition: all var(--transition-fast);
}

.toggle-chip.active {
  background: rgba(16, 185, 129, 0.15);
  border-color: rgba(16, 185, 129, 0.4);
  color: #34d399;
}

/* ---------------- Main Content Grid ---------------- */
.section-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: var(--space-lg);
}

.section-title {
  font-size: 1.45rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.section-count {
  font-size: 0.9rem;
  color: var(--primary-400);
  font-weight: 600;
  margin-left: 6px;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: var(--space-lg);
  margin-bottom: var(--space-3xl);
}

/* ---------------- Culture Item Card ---------------- */
.culture-card {
  background: var(--bg-surface);
  border: 1px solid var(--bg-surface-glass-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-fast);
  cursor: pointer;
  position: relative;
}

.culture-card:hover {
  transform: translateY(-6px);
  border-color: rgba(124, 58, 237, 0.45);
  box-shadow: var(--shadow-lg), 0 0 20px rgba(124, 58, 237, 0.2);
}

.card-poster-wrapper {
  position: relative;
  width: 100%;
  padding-top: 135%; /* 3:4 aspect ratio */
  background: #1e293b;
  overflow: hidden;
}

.card-poster-img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-smooth);
}

.culture-card:hover .card-poster-img {
  transform: scale(1.05);
}

.card-badge-top {
  position: absolute;
  top: 10px;
  left: 10px;
  display: flex;
  gap: 6px;
  z-index: 2;
}

.badge-tag {
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 700;
  backdrop-filter: blur(6px);
}

.badge-realm {
  background: rgba(15, 23, 42, 0.85);
  color: var(--text-primary);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.badge-free {
  background: var(--badge-free-bg);
  color: var(--badge-free-text);
  border: 1px solid rgba(52, 211, 153, 0.3);
}

.btn-bookmark-card {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  background: rgba(15, 23, 42, 0.75);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  backdrop-filter: blur(4px);
  transition: transform var(--transition-fast), background var(--transition-fast);
  z-index: 2;
}

.btn-bookmark-card:hover {
  transform: scale(1.15);
  background: rgba(15, 23, 42, 0.95);
}

.btn-bookmark-card.saved {
  color: var(--accent-coral);
  border-color: rgba(255, 94, 98, 0.5);
}

.card-content {
  padding: var(--space-md);
  display: flex;
  flex-direction: column;
  flex: 1;
  gap: 8px;
}

.card-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.35;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  height: 2.7rem;
}

.card-meta-row {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--text-muted);
  font-size: 0.8rem;
}

.card-meta-row i {
  color: var(--primary-400);
}

.card-place {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.card-footer {
  margin-top: auto;
  padding-top: 8px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-date {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.card-action-hint {
  font-size: 0.75rem;
  color: var(--primary-400);
  font-weight: 600;
}

/* ---------------- AI Course Generator Widget ---------------- */
.ai-course-section {
  background: linear-gradient(135deg, rgba(30, 27, 75, 0.8) 0%, rgba(15, 23, 42, 0.95) 100%);
  border: 1px solid rgba(124, 58, 237, 0.3);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  margin-bottom: var(--space-3xl);
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

.ai-course-section::before {
  content: '';
  position: absolute;
  top: -50px;
  right: -50px;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(124, 58, 237, 0.4) 0%, transparent 70%);
  pointer-events: none;
}

.ai-course-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.ai-badge {
  background: var(--grad-accent);
  color: white;
  font-size: 0.75rem;
  font-weight: 800;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.ai-selectors-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.selector-item label {
  display: block;
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: 6px;
  font-weight: 600;
}

.course-result-container {
  margin-top: var(--space-lg);
  padding-top: var(--space-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.timeline-flow {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  position: relative;
  padding-left: 28px;
}

.timeline-flow::before {
  content: '';
  position: absolute;
  top: 10px;
  bottom: 10px;
  left: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--primary-500) 0%, var(--accent-coral) 100%);
}

.timeline-step {
  position: relative;
  background: var(--bg-surface);
  border: 1px solid var(--bg-surface-glass-border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.timeline-step::before {
  content: '';
  position: absolute;
  left: -24px;
  top: 50%;
  transform: translateY(-50%);
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--primary-400);
  border: 2px solid var(--bg-main);
}

/* ---------------- Detail Modal ---------------- */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: var(--bg-overlay);
  backdrop-filter: blur(12px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-md);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.modal-backdrop.open {
  opacity: 1;
  visibility: visible;
}

.modal-sheet {
  background: var(--bg-surface);
  border: 1px solid var(--bg-surface-glass-border);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 820px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  transform: translateY(20px) scale(0.97);
  transition: transform var(--transition-normal);
}

.modal-backdrop.open .modal-sheet {
  transform: translateY(0) scale(1);
}

.modal-header-visual {
  position: relative;
  height: 240px;
  background: #1a2234;
  overflow: hidden;
}

.modal-backdrop-blur-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: blur(20px) brightness(0.5);
  transform: scale(1.1);
}

.modal-close-btn {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.2rem;
  z-index: 10;
  transition: background var(--transition-fast);
}

.modal-close-btn:hover {
  background: rgba(0, 0, 0, 0.9);
}

.modal-body-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: var(--space-xl);
  padding: var(--space-xl);
  margin-top: -80px;
  position: relative;
  z-index: 5;
}

.modal-poster-box {
  width: 100%;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 2px solid rgba(255, 255, 255, 0.1);
  background: #1e293b;
}

.modal-poster-box img {
  width: 100%;
  display: block;
  object-fit: cover;
}

.modal-info-details {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.modal-title {
  font-size: 1.5rem;
  font-weight: 800;
  line-height: 1.3;
}

.info-table-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: var(--bg-surface-elevated);
  padding: var(--space-md);
  border-radius: var(--radius-md);
  font-size: 0.9rem;
}

.info-row {
  display: flex;
  gap: var(--space-md);
}

.info-label {
  color: var(--text-muted);
  width: 80px;
  flex-shrink: 0;
  font-weight: 600;
}

.info-val {
  color: var(--text-primary);
  word-break: break-all;
}

/* Monetization Action Buttons Grid */
.affiliate-action-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-sm);
  margin-top: var(--space-sm);
}

.btn-affiliate-primary {
  background: var(--grad-hero);
  color: white;
  padding: 0.9rem 1.2rem;
  border-radius: var(--radius-md);
  font-weight: 700;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  box-shadow: var(--shadow-glow);
  transition: transform var(--transition-fast);
}

.btn-affiliate-primary:hover {
  transform: translateY(-2px);
}

.btn-affiliate-sub {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--bg-surface-glass-border);
  color: var(--text-primary);
  padding: 0.9rem 1.2rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all var(--transition-fast);
}

.btn-affiliate-sub:hover {
  border-color: rgba(255, 255, 255, 0.3);
  background: rgba(255, 255, 255, 0.06);
}

/* ---------------- Monetization Sponsorship Banner ---------------- */
.promo-sponsor-banner {
  background: linear-gradient(90deg, #1e1b4b 0%, #311042 100%);
  border: 1px dashed rgba(167, 139, 250, 0.4);
  border-radius: var(--radius-lg);
  padding: var(--space-md) var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-bottom: var(--space-2xl);
}

.promo-badge {
  background: #f59e0b;
  color: #0f172a;
  font-size: 0.7rem;
  font-weight: 800;
  padding: 2px 6px;
  border-radius: 4px;
  margin-right: 6px;
}

/* ---------------- PWA Install Toast / Banner ---------------- */
.pwa-toast-banner {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--primary-500);
  border-radius: var(--radius-lg);
  padding: var(--space-md) var(--space-lg);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  z-index: 999;
  display: flex;
  align-items: center;
  gap: var(--space-md);
  max-width: 420px;
  transform: translateY(120%);
  transition: transform var(--transition-normal);
}

.pwa-toast-banner.show {
  transform: translateY(0);
}

/* Responsive Modal Layout */
@media (max-width: 768px) {
  .modal-body-layout {
    grid-template-columns: 1fr;
    margin-top: -40px;
  }
  
  .modal-poster-box {
    max-width: 220px;
    margin: 0 auto;
  }
  
  .hero-title {
    font-size: 1.75rem;
  }
  
  .pwa-toast-banner {
    left: 16px;
    right: 16px;
    bottom: 16px;
    max-width: none;
  }
}