/* ======================
   Browse Page Styles
   ====================== */
.browse-section {
  padding: var(--spacing-12) 0;
  min-height: calc(100vh - 70px);
}

.mobile-categories {
  display: block;
  margin-bottom: var(--spacing-8);
}

@media (min-width: 768px) {
  .mobile-categories {
    display: none;
  }
}

.category-dropdown {
  width: 100%;
  padding: var(--spacing-3) var(--spacing-4);
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--pure-white);
  font-size: var(--font-size-base);
  color: var(--text-primary);
}

.browse-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-8);
}

@media (min-width: 768px) {
  .browse-layout {
    grid-template-columns: 280px 1fr;
  }
}

.sidebar {
  display: none;
  background: var(--pure-white);
  border-radius: 12px;
  padding: var(--spacing-6);
  height: fit-content;
  box-shadow: var(--shadow-md);
}

@media (min-width: 768px) {
  .sidebar {
    display: block;
  }
}

.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-6);
}

.sidebar-header h3 {
  color: var(--navy-blue);
  font-size: var(--font-size-lg);
}

.sidebar-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-1);
}

.sidebar-toggle svg {
  width: 20px;
  height: 20px;
  color: var(--text-secondary);
}

.category-tree {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2);
}

.category-group {
  border-bottom: 1px solid var(--border-light);
  padding-bottom: var(--spacing-3);
  margin-bottom: var(--spacing-3);
}

.category-group:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.category-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  color: var(--navy-blue);
  font-weight: 600;
  cursor: pointer;
  padding: var(--spacing-2);
  border-radius: 4px;
  transition: var(--transition);
}

.category-header:hover {
  background: hsl(0, 0%, 97%);
}

.category-icon {
  width: 16px;
  height: 16px;
  transition: var(--transition);
}

.category-group.expanded .category-icon {
  transform: rotate(90deg);
}

.subcategories {
  margin-top: var(--spacing-2);
  margin-left: var(--spacing-6);
  display: none;
  flex-direction: column;
  gap: var(--spacing-1);
}

.category-group.expanded .subcategories {
  display: flex;
}

.subcategory {
  color: var(--text-secondary);
  text-decoration: none;
  padding: var(--spacing-2);
  border-radius: 4px;
  font-size: var(--font-size-sm);
  transition: var(--transition);
}

.subcategory:hover,
.subcategory.active {
  background: hsl(354, 69%, 95%);
  color: var(--deep-red);
}

.search-filters {
  margin-bottom: var(--spacing-8);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-4);
}

@media (min-width: 768px) {
  .search-filters {
    flex-direction: row;
    align-items: center;
  }
}

.search-bar {
  position: relative;
  flex: 1;
}

.search-icon {
  position: absolute;
  left: var(--spacing-3);
  top: 50%;
  transform: translateY(-50%);
  width: 20px;
  height: 20px;
  color: var(--text-muted);
  pointer-events: none;
}

.search-input {
  width: 100%;
  padding: var(--spacing-3) var(--spacing-3) var(--spacing-3) 48px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: var(--font-size-base);
  background: var(--pure-white);
}

.search-input:focus {
  outline: none;
  border-color: var(--deep-red);
  box-shadow: 0 0 0 3px hsla(354, 69%, 39%, 0.1);
}

.filter-controls {
  display: flex;
  gap: var(--spacing-3);
  flex-wrap: wrap;
}

.filter-select {
  padding: var(--spacing-3) var(--spacing-4);
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--pure-white);
  font-size: var(--font-size-base);
  color: var(--text-primary);
  min-width: 140px;
}

.video-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-6);
}

@media (min-width: 768px) {
  .video-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .video-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.video-card {
  background: var(--pure-white);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  cursor: pointer;
  text-decoration: none;
}

.video-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.video-thumbnail {
  position: relative;
  overflow: hidden;
}

.video-thumbnail img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  transition: var(--transition);
}

.video-card:hover .video-thumbnail img {
  transform: scale(1.05);
}

.video-overlay {
  position: absolute;
  inset: 0;
  background: rgba(12, 35, 64, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: var(--transition);
}

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

.video-duration {
  position: absolute;
  bottom: var(--spacing-2);
  right: var(--spacing-2);
  background: rgba(12, 35, 64, 0.8);
  color: var(--pure-white);
  padding: var(--spacing-1) var(--spacing-2);
  border-radius: 4px;
  font-size: var(--font-size-xs);
  display: flex;
  align-items: center;
  gap: var(--spacing-1);
}

.video-duration svg {
  width: 12px;
  height: 12px;
}

.video-info {
  padding: var(--spacing-4);
}

.video-title {
  color: var(--navy-blue);
  font-weight: 600;
  margin-bottom: var(--spacing-2);
  font-size: var(--font-size-base);
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.video-meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  margin-bottom: var(--spacing-2);
}

.video-meta svg {
  width: 14px;
  height: 14px;
}

.video-score {
  color: var(--deep-red);
  font-weight: 600;
  font-size: var(--font-size-sm);
  margin-bottom: var(--spacing-2);
}

.video-tag {
  display: inline-block;
  background: hsla(180, 2%, 78%, 0.2);
  color: var(--navy-blue);
  padding: var(--spacing-1) var(--spacing-2);
  border-radius: 12px;
  font-size: var(--font-size-xs);
  font-weight: 500;
}