/* ========================================
   LILLIPIX - Bibliothek Styles
   Modern Library with Search & Gallery
======================================== */

/* Content Breadcrumb Navigation */
.content-breadcrumb {
  padding: var(--space-4) 0;
  background: white;
  border-bottom: 1px solid var(--gray-200);
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  color: var(--gray-700);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--border-radius);
  transition: all var(--transition-base);
}

.back-link:hover {
  background: var(--gray-50);
  color: var(--primary);
}

.back-link svg {
  transition: transform var(--transition-base);
}

.back-link:hover svg {
  transform: translateX(-4px);
}

/* Bibliothek Hero */
.bibliothek-hero {
  padding: var(--space-12) 0 var(--space-8);
  background: linear-gradient(135deg, var(--gray-50) 0%, var(--white) 100%);
  border-bottom: 1px solid var(--gray-200);
}

.bibliothek-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-8);
}

.header-welcome h1 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: var(--space-2);
  font-family: var(--font-display);
}

.header-welcome .highlight {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.header-welcome p {
  color: var(--gray-600);
  font-size: 1.05rem;
}

.header-stats {
  display: flex;
  gap: var(--space-4);
}

.stat-card {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4);
  background: white;
  border-radius: var(--border-radius);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.stat-card svg {
  color: var(--primary);
}

.stat-info {
  display: flex;
  flex-direction: column;
}

.stat-value {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--gray-900);
  font-family: var(--font-display);
}

.stat-label {
  font-size: 0.8rem;
  color: var(--gray-500);
  font-weight: 600;
}

/* Tabs Navigation */
.bibliothek-tabs {
  background: white;
  border-bottom: 2px solid var(--gray-200);
  position: sticky;
  top: 80px;
  z-index: 100;
}

.tabs-nav {
  display: flex;
  gap: var(--space-2);
}

.tab-btn {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-6);
  background: transparent;
  border: none;
  border-bottom: 3px solid transparent;
  color: var(--gray-600);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all var(--transition-base);
  font-family: var(--font-primary);
}

.tab-btn:hover {
  color: var(--primary);
  background: var(--gray-50);
}

.tab-btn.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

.tab-btn svg {
  width: 20px;
  height: 20px;
}

/* Search Bar */
.bibliothek-search {
  padding: var(--space-8) 0;
  background: white;
}

.search-bar {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.search-input-wrapper {
  position: relative;
  flex: 1;
}

.search-input-wrapper svg {
  position: absolute;
  left: var(--space-4);
  top: 50%;
  transform: translateY(-50%);
  color: var(--gray-400);
}

.search-input {
  width: 100%;
  padding: var(--space-4) var(--space-4) var(--space-4) var(--space-12);
  font-size: 1rem;
  font-family: var(--font-primary);
  color: var(--gray-900);
  background: var(--gray-50);
  border: 2px solid var(--gray-300);
  border-radius: var(--border-radius);
  transition: all var(--transition-base);
}

.search-input:focus {
  outline: none;
  border-color: var(--primary);
  background: white;
  box-shadow: 0 0 0 3px rgba(255, 107, 107, 0.1);
}

.search-filters {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.filter-select {
  padding: var(--space-3) var(--space-4);
  font-size: 0.9rem;
  font-family: var(--font-primary);
  font-weight: 600;
  color: var(--gray-700);
  background: white;
  border: 2px solid var(--gray-300);
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: all var(--transition-base);
}

.filter-select:hover,
.filter-select:focus {
  border-color: var(--primary);
  outline: none;
}

.filter-reset {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  background: var(--gray-100);
  border: 2px solid var(--gray-300);
  border-radius: var(--border-radius);
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--gray-700);
  cursor: pointer;
  transition: all var(--transition-base);
  font-family: var(--font-primary);
}

.filter-reset:hover {
  background: var(--gray-200);
  border-color: var(--gray-400);
}

/* Content Header */
.content-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-8);
}

.content-header h3 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--gray-900);
}

.content-count {
  color: var(--gray-500);
  font-weight: 500;
  font-size: 1.125rem;
}

.view-toggle {
  display: flex;
  gap: var(--space-2);
  background: var(--gray-100);
  padding: var(--space-1);
  border-radius: var(--border-radius);
}

.view-btn {
  padding: var(--space-2) var(--space-3);
  background: transparent;
  border: none;
  border-radius: calc(var(--border-radius) - 2px);
  color: var(--gray-600);
  cursor: pointer;
  transition: all var(--transition-base);
}

.view-btn:hover {
  color: var(--gray-900);
}

.view-btn.active {
  background: white;
  color: var(--primary);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

/* Content Grid */
.bibliothek-grid {
  padding: var(--space-8) 0 var(--space-12);
}

.content-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-6);
}

/* Content Card */
.content-card {
  background: white;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
  transition: all var(--transition-base);
}

.content-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

.card-image {
  position: relative;
  height: 200px;
  overflow: hidden;
}

.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

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

.card-badges {
  position: absolute;
  top: var(--space-3);
  left: var(--space-3);
  display: flex;
  gap: var(--space-2);
}

.badge {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  border-radius: 2rem;
  font-size: 0.75rem;
  font-weight: 700;
  backdrop-filter: blur(10px);
}

.badge-paper {
  background: rgba(255, 255, 255, 0.9);
  color: var(--primary);
}

.badge-digital {
  background: rgba(69, 183, 209, 0.9);
  color: white;
}

.badge.mathe {
  background: linear-gradient(135deg, rgba(255, 107, 107, 0.95), rgba(255, 142, 83, 0.95));
  color: white;
}

.badge.deutsch {
  background: linear-gradient(135deg, rgba(78, 205, 196, 0.95), rgba(68, 160, 141, 0.95));
  color: white;
}

.badge.science {
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.95), rgba(118, 75, 162, 0.95));
  color: white;
}

.badge.kunst {
  background: linear-gradient(135deg, rgba(248, 87, 166, 0.95), rgba(255, 88, 88, 0.95));
  color: white;
}

.badge.musik {
  background: linear-gradient(135deg, rgba(168, 85, 247, 0.95), rgba(139, 92, 246, 0.95));
  color: white;
}

.badge.coding {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.95), rgba(37, 99, 235, 0.95));
  color: white;
}

.badge.featured {
  background: rgba(255, 215, 0, 0.95);
  color: var(--gray-900);
}

.card-actions {
  position: absolute;
  top: var(--space-3);
  right: var(--space-3);
  display: flex;
  gap: var(--space-2);
  opacity: 0;
  transform: translateY(-10px);
  transition: all var(--transition-base);
}

.content-card:hover .card-actions {
  opacity: 1;
  transform: translateY(0);
}

.action-btn {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.95);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  transition: all var(--transition-base);
  backdrop-filter: blur(10px);
}

.action-btn:hover {
  background: var(--primary);
  color: white;
  transform: scale(1.1);
}

.card-content {
  padding: var(--space-5);
}

.card-category {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-3);
}

.card-content h3 {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: var(--space-2);
  color: var(--gray-900);
}

.card-content p {
  color: var(--gray-600);
  font-size: 0.9rem;
  line-height: 1.5;
  margin-bottom: var(--space-4);
}

.card-meta {
  display: flex;
  gap: var(--space-4);
  margin-bottom: var(--space-4);
  padding-top: var(--space-3);
  border-top: 1px solid var(--gray-200);
}

.meta-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--gray-500);
  font-size: 0.85rem;
  font-weight: 600;
}

/* Load More */
.load-more {
  text-align: center;
  margin-top: var(--space-8);
}

/* Tab Content */
.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

/* Meine Galerie */
.meine-galerie {
  padding: var(--space-8) 0 var(--space-12);
}

.galerie-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--space-8);
}

.galerie-header h3 {
  font-size: 1.75rem;
  font-weight: 800;
  margin-bottom: var(--space-2);
  font-family: var(--font-display);
}

.galerie-header p {
  color: var(--gray-600);
  font-size: 1rem;
}

.galerie-actions {
  display: flex;
  gap: var(--space-3);
}

.galerie-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-6);
}

/* Section Divider */
.section-divider {
  grid-column: 1 / -1;
  margin: var(--space-8) 0 var(--space-4);
  padding: var(--space-4) 0;
  border-bottom: 2px solid var(--gray-200);
}

.section-divider h4 {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--gray-900);
  font-family: var(--font-display);
}

.section-divider svg {
  width: 20px;
  height: 20px;
  color: var(--primary);
}

/* Content Card Link */
.card-link {
  display: block;
  text-decoration: none;
  color: inherit;
}

/* Card Badge */
.card-badge {
  position: absolute;
  top: var(--space-3);
  left: var(--space-3);
  display: flex;
  gap: var(--space-2);
  z-index: 10;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  border-radius: 2rem;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  backdrop-filter: blur(10px);
}

.badge.mathe {
  background: linear-gradient(135deg, rgba(255, 107, 107, 0.95), rgba(255, 142, 83, 0.95));
  color: white;
}

.badge.deutsch {
  background: linear-gradient(135deg, rgba(78, 205, 196, 0.95), rgba(68, 160, 141, 0.95));
  color: white;
}

.badge.science {
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.95), rgba(118, 75, 162, 0.95));
  color: white;
}

.badge.kunst {
  background: linear-gradient(135deg, rgba(248, 87, 166, 0.95), rgba(255, 88, 88, 0.95));
  color: white;
}

.badge.musik {
  background: linear-gradient(135deg, rgba(168, 85, 247, 0.95), rgba(139, 92, 246, 0.95));
  color: white;
}

.badge.coding {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.95), rgba(37, 99, 235, 0.95));
  color: white;
}

.badge.featured {
  background: rgba(255, 215, 0, 0.95);
  color: var(--gray-900);
}

/* Card Icon */
.card-icon {
  position: relative;
  height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--gray-50) 0%, var(--white) 100%);
  border-bottom: 1px solid var(--gray-200);
}

.card-icon svg {
  color: var(--gray-400);
  transition: all var(--transition-base);
}

.content-card:hover .card-icon svg {
  color: var(--primary);
  transform: scale(1.1);
}

/* Card Categories Colors */
.mathe-card .card-icon {
  background: linear-gradient(135deg, rgba(255, 107, 107, 0.05), rgba(255, 142, 83, 0.05));
}

.deutsch-card .card-icon {
  background: linear-gradient(135deg, rgba(78, 205, 196, 0.05), rgba(68, 160, 141, 0.05));
}

.science-card .card-icon {
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.05), rgba(118, 75, 162, 0.05));
}

.kunst-card .card-icon {
  background: linear-gradient(135deg, rgba(248, 87, 166, 0.05), rgba(255, 88, 88, 0.05));
}

.musik-card .card-icon {
  background: linear-gradient(135deg, rgba(168, 85, 247, 0.05), rgba(139, 92, 246, 0.05));
}

.coding-card .card-icon {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.05), rgba(37, 99, 235, 0.05));
}

/* Card Lock (Premium Content) */
.card-lock {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: linear-gradient(135deg, rgba(255, 215, 0, 0.1), rgba(255, 193, 7, 0.1));
  border: 1px solid rgba(255, 193, 7, 0.3);
  border-radius: 2rem;
  font-size: 0.75rem;
  font-weight: 700;
  color: #F59E0B;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.card-lock svg {
  width: 14px;
  height: 14px;
}

/* Difficulty Badges */
.difficulty.easy {
  color: #10B981;
}

.difficulty.medium {
  color: #F59E0B;
}

.difficulty.hard {
  color: #EF4444;
}

/* Responsive */
@media (max-width: 1024px) {
  .bibliothek-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .header-stats {
    width: 100%;
    justify-content: space-between;
  }

  .stat-card {
    flex: 1;
  }
}

@media (max-width: 768px) {
  .search-filters {
    flex-direction: column;
  }

  .filter-select {
    width: 100%;
  }

  .content-grid,
  .galerie-grid {
    grid-template-columns: 1fr;
  }

  .tabs-nav {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .tab-btn {
    white-space: nowrap;
  }
  
  .card-badge {
    flex-direction: column;
  }
}