/*
 * Tanaghum Gallery Styles
 * Community lesson gallery with filters and preview
 */

/* ============================================
   Gallery Hero
   ============================================ */

.gallery-hero {
  padding: var(--space-16) 0 var(--space-12);
  background: linear-gradient(135deg, var(--color-bg) 0%, var(--color-bg-alt) 100%);
  text-align: center;
  border-bottom: 1px solid var(--color-border-light);
}

.gallery-title {
  font-size: var(--text-4xl);
  font-weight: 700;
  margin-bottom: var(--space-4);
  color: var(--color-text);
}

.gallery-title .ar {
  display: block;
  font-family: var(--font-arabic);
  color: var(--color-primary-text);
  font-size: 0.85em;
  margin-bottom: var(--space-2);
}

.gallery-subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* ============================================
   Search & Filters
   ============================================ */

.gallery-controls {
  padding: var(--space-8) 0;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border-light);
  position: sticky;
  top: var(--header-height);
  z-index: var(--z-sticky);
}

/* Search */
.search-wrapper {
  position: relative;
  max-width: 600px;
  margin: 0 auto var(--space-6);
}

.search-icon {
  position: absolute;
  left: var(--space-4);
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-muted);
  pointer-events: none;
}

.search-input {
  width: 100%;
  padding: var(--space-4) var(--space-12) var(--space-4) var(--space-12);
  font-size: var(--text-base);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-full);
  background-color: var(--color-bg);
  color: var(--color-text);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.search-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
}

.search-clear {
  position: absolute;
  right: var(--space-4);
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--color-text-muted);
  cursor: pointer;
  padding: var(--space-2);
  border-radius: var(--radius-full);
  transition: background-color var(--transition-fast);
}

.search-clear:hover {
  background-color: var(--color-bg-alt);
  color: var(--color-text);
}

/* Filters */
.filters {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.filter-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  border: none;
  padding: 0;
}

.filter-label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
}

.filter-pills {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.filter-pill {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  font-weight: 500;
  background-color: var(--color-bg);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.filter-pill:hover {
  background-color: var(--color-bg-alt);
  border-color: var(--color-primary);
  color: var(--color-text);
}

.filter-pill.active {
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
  border-color: var(--color-primary);
}

/* Select Filters */
.filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.filter-select-group {
  flex: 1;
  min-width: 200px;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.filter-select {
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-sm);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-bg);
  color: var(--color-text);
  cursor: pointer;
  transition: border-color var(--transition-fast);
}

.filter-select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

/* Active Filters */
.active-filters {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4);
  background-color: var(--color-bg-alt);
  border-radius: var(--radius-md);
  margin-top: var(--space-4);
  flex-wrap: wrap;
}

.active-filters-label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-secondary);
}

.active-filters-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  flex: 1;
}

.active-filter-tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-3);
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 500;
}

.active-filter-tag button {
  background: none;
  border: none;
  color: inherit;
  cursor: pointer;
  padding: 0;
  display: flex;
  align-items: center;
}

.btn-clear-all {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  font-weight: 500;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-clear-all:hover {
  background-color: var(--color-error);
  color: white;
  border-color: var(--color-error);
}

/* ============================================
   Gallery Grid
   ============================================ */

.gallery-section {
  padding: var(--space-8) 0 var(--space-24);
  background: var(--color-bg);
}

.results-info {
  margin-bottom: var(--space-6);
}

.results-count {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin: 0;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
  animation: fade-in 0.4s ease;
}

/* Responsive Grid */
@media (max-width: 1280px) {
  .gallery-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 768px) {
  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4);
  }
}

@media (max-width: 480px) {
  .gallery-grid {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   Lesson Cards
   ============================================ */

.lesson-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  cursor: pointer;
}

.lesson-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary);
}

/* Card Thumbnail */
.card-thumbnail {
  width: 100%;
  height: 180px;
  background: var(--color-bg-alt);
  position: relative;
  overflow: hidden;
}

.card-thumbnail img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.card-thumbnail-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
  color: white;
  font-size: var(--text-4xl);
}

.card-duration {
  position: absolute;
  bottom: var(--space-2);
  right: var(--space-2);
  padding: var(--space-1) var(--space-3);
  background: rgba(0, 0, 0, 0.8);
  color: white;
  font-size: var(--text-xs);
  font-weight: 600;
  border-radius: var(--radius-sm);
}

/* Card Body */
.card-body {
  padding: var(--space-5);
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-3);
  margin-bottom: var(--space-2);
}

.card-title {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text);
  line-height: var(--line-height-tight);
  margin: 0;
  flex: 1;
}

.card-title-ar {
  font-family: var(--font-arabic);
  display: block;
  margin-bottom: var(--space-1);
  color: var(--color-primary-text);
}

.card-title-en {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  font-weight: 500;
}

/* ILR Badge */
.card-ilr-badge {
  flex-shrink: 0;
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  font-weight: 700;
  color: white;
  border-radius: var(--radius-full);
}

.card-ilr-badge.ilr-1 { background-color: var(--color-success); }
.card-ilr-badge.ilr-1-plus { background-color: #16a34a; }
.card-ilr-badge.ilr-2 { background-color: var(--color-info); }
.card-ilr-badge.ilr-2-plus { background-color: var(--color-primary-dark); }
.card-ilr-badge.ilr-3 { background-color: var(--color-accent); }
.card-ilr-badge.ilr-3-plus { background-color: #7c3aed; }

/* Card Meta */
.card-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.card-meta-item {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.card-topic {
  padding: var(--space-1) var(--space-2);
  background-color: var(--color-bg-alt);
  color: var(--color-text-secondary);
  border-radius: var(--radius-sm);
  font-size: var(--text-xs);
  font-weight: 500;
  text-transform: capitalize;
}

/* Rating */
.card-rating {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.stars {
  display: flex;
  gap: 1px;
  color: var(--color-accent);
}

.star {
  font-size: var(--text-sm);
}

.star.filled::before {
  content: '\2605';
}

.star.empty::before {
  content: '\2606';
}

.rating-count {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-left: var(--space-1);
}

/* Card Footer */
.card-footer {
  padding: var(--space-4) var(--space-5);
  border-top: 1px solid var(--color-border-light);
  display: flex;
  gap: var(--space-2);
}

.card-btn {
  flex: 1;
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  font-weight: 500;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}

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

.card-btn-preview:hover {
  background-color: var(--color-bg-alt);
  border-color: var(--color-primary);
}

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

.card-btn-use:hover {
  background-color: var(--color-primary-light);
}

/* ============================================
   Loading Skeleton
   ============================================ */

.lesson-card.skeleton {
  cursor: default;
  pointer-events: none;
}

.lesson-card.skeleton:hover {
  transform: none;
  box-shadow: var(--shadow-sm);
  border-color: var(--color-border-light);
}

.skeleton-shimmer {
  background: linear-gradient(
    90deg,
    var(--color-bg-alt) 0%,
    var(--color-border-light) 50%,
    var(--color-bg-alt) 100%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.skeleton-text {
  height: 16px;
  background-color: var(--color-bg-alt);
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-2);
}

/* ============================================
   Empty State
   ============================================ */

.empty-state {
  text-align: center;
  padding: var(--space-24) var(--space-6);
}

.empty-icon {
  font-size: 4rem;
  margin-bottom: var(--space-6);
  opacity: 0.5;
}

.empty-title {
  font-size: var(--text-2xl);
  font-weight: 600;
  margin-bottom: var(--space-3);
  color: var(--color-text);
}

.empty-message {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-6);
  max-width: 400px;
  margin-left: auto;
  margin-right: auto;
}

/* ============================================
   Preview Modal
   ============================================ */

.preview-modal {
  max-width: 900px;
  max-height: 85vh;
}

.preview-modal .modal-body {
  max-height: calc(85vh - 180px);
}

.preview-content {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.preview-header {
  text-align: center;
  padding-bottom: var(--space-6);
  border-bottom: 1px solid var(--color-border-light);
}

.preview-title-ar {
  font-family: var(--font-arabic);
  font-size: var(--text-3xl);
  color: var(--color-primary-text);
  margin-bottom: var(--space-2);
}

.preview-title-en {
  font-size: var(--text-xl);
  color: var(--color-text-secondary);
}

.preview-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-4);
  margin-top: var(--space-4);
  font-size: var(--text-sm);
}

.preview-meta-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.preview-section {
  padding: var(--space-4) 0;
}

.preview-section h3 {
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-3);
  color: var(--color-text);
}

.preview-description {
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

.preview-player {
  background: var(--color-bg-alt);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  text-align: center;
}

.preview-transcript {
  font-family: var(--font-arabic);
  direction: rtl;
  text-align: right;
  background: var(--color-bg-alt);
  padding: var(--space-6);
  border-radius: var(--radius-lg);
  line-height: var(--line-height-arabic);
  font-size: var(--text-lg);
  max-height: 300px;
  overflow-y: auto;
}

.preview-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
  padding: var(--space-6);
  background: var(--color-bg-alt);
  border-radius: var(--radius-lg);
}

.preview-stat {
  text-align: center;
}

.preview-stat-value {
  display: block;
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-primary-text);
  margin-bottom: var(--space-1);
}

.preview-stat-label {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

/* ============================================
   Footer Overrides
   ============================================ */

.footer {
  padding: var(--space-12) 0;
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border-light);
}

.footer-content {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-6);
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 600;
}

.footer-logo-arabic {
  font-family: var(--font-arabic);
  font-size: var(--text-xl);
  color: var(--color-primary-text);
}

.footer-links {
  display: flex;
  gap: var(--space-6);
}

.footer-link {
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  transition: color var(--transition-fast);
}

.footer-link:hover {
  color: var(--color-primary-text);
}

.footer-copy {
  width: 100%;
  text-align: center;
  padding-top: var(--space-6);
  margin-top: var(--space-6);
  border-top: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

/* ============================================
   Responsive Adjustments
   ============================================ */

@media (max-width: 640px) {
  .gallery-controls {
    position: relative;
  }

  .gallery-title {
    font-size: var(--text-3xl);
  }

  .filter-pills {
    font-size: var(--text-xs);
  }

  .filter-pill {
    padding: var(--space-2) var(--space-3);
    font-size: var(--text-xs);
    min-height: 36px;
    display: inline-flex;
    align-items: center;
  }

  .card-body {
    padding: var(--space-4);
  }

  .card-footer {
    flex-direction: column;
  }

  .preview-stats {
    grid-template-columns: 1fr;
    gap: var(--space-3);
  }
}

/* ============================================
   Reduced Motion Preferences
   ============================================ */

@media (prefers-reduced-motion: reduce) {
  .lesson-card,
  .filter-pill,
  .search-input,
  .search-clear,
  .btn-clear-all,
  .landing-stat-box {
    transition: none;
    animation: none;
  }

  .skeleton-shimmer {
    animation: none;
    background: var(--color-bg-alt);
  }

  .gallery-grid {
    animation: none;
  }
}

/* ============================================
   Enhanced Accessibility
   ============================================ */

/* Focus states for interactive elements */
.lesson-card:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  box-shadow: var(--shadow-lg);
}

.filter-pill:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.search-clear:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.card-btn:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.btn-clear-all:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.active-filter-tag button:focus-visible {
  outline: 2px solid white;
  outline-offset: 1px;
  border-radius: 50%;
}

/* Search input focus */
.search-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.15);
}

/* ============================================
   Touch Target Improvements
   ============================================ */

@media (pointer: coarse) {
  .filter-pill {
    min-height: 44px;
    padding: var(--space-3) var(--space-4);
  }

  .search-clear {
    min-width: 44px;
    min-height: 44px;
  }

  .card-btn {
    min-height: 44px;
  }

  .btn-clear-all {
    min-height: 44px;
  }

  .active-filter-tag {
    min-height: 32px;
  }

  .active-filter-tag button {
    min-width: 24px;
    min-height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .filter-select {
    min-height: 44px;
  }
}

/* ============================================
   High Contrast Mode Support
   ============================================ */

@media (prefers-contrast: high) {
  .lesson-card {
    border-width: 2px;
  }

  .filter-pill {
    border-width: 2px;
  }

  .filter-pill.active {
    border-color: var(--color-text);
  }

  .card-ilr-badge {
    border: 2px solid currentColor;
  }
}

/* ============================================
   Pagination
   ============================================ */

.pagination-container {
  padding: var(--space-6) 0;
}

.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
}

.pagination-btn {
  min-width: 100px;
}

.pagination-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.pagination-info {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}