/* Tab 面板切换 */
.categories-tab-panel {
  display: none;
}

.categories-tab-panel.active {
  display: block;
}

/* 分类项目样式 */
.category-item {
  display: flex;
  align-items: center;
  padding: 0.5rem 1rem;
  border-radius: 4px;
  transition: all 0.2s ease;
  cursor: pointer;
  text-decoration: none;
  color: var(--vscode-text);
}

.category-item.active {
  background: var(--vscode-highlight);
}

.category-item:hover {
  background: var(--vscode-active);
}

.category-item i {
  margin-right: 0.5rem;
  color: #dcb67a;
  font-size: 0.9rem;
}

.category-item span {
  color: var(--vscode-text);
}

.category-item .count {
  color: #808080;
  font-size: 0.8rem;
  margin-left: 5px;
}

/* 分类概览样式 */
.categories-overview {
  display: grid;
  gap: 1.5rem;
}

.category-section {
  background: var(--vscode-sidebar);
  border: 1px solid var(--vscode-border);
  border-radius: 4px;
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.category-section:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.category-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem;
  background: var(--vscode-active);
  border-bottom: 1px solid var(--vscode-border);
  cursor: pointer;
  transition: background-color 0.2s ease;
}

.category-header:hover {
  background: var(--vscode-highlight);
}

.category-header i {
  color: #dcb67a;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.category-header .toggle-icon {
  margin-left: auto;
  transition: transform 0.3s ease;
  color: var(--vscode-text);
}

.category-header.collapsed .toggle-icon {
  transform: rotate(-90deg);
}

.category-link {
  text-decoration: none;
  color: inherit;
  flex: 1;
  display: flex;
  align-items: center;
}

.category-link:hover h2 {
  color: var(--vscode-accent);
}

.category-header h2 {
  margin: 0;
  font-size: 1.2rem;
  color: var(--vscode-text);
  transition: color 0.2s ease;
}

.category-header .count {
  padding: 0.25rem 0.75rem;
  background: var(--vscode-sidebar);
  border-radius: 12px;
  font-size: 0.9rem;
  color: #808080;
  flex-shrink: 0;
}

.category-posts {
  padding: 1rem;
  max-height: 400px;
  overflow-y: auto;
  transition: max-height 0.3s ease, opacity 0.3s ease, padding 0.3s ease;
}

.category-posts.collapsed {
  max-height: 0;
  padding-top: 0;
  padding-bottom: 0;
  opacity: 0;
  overflow: hidden;
}

.category-posts::-webkit-scrollbar {
  width: 6px;
}

.category-posts::-webkit-scrollbar-track {
  background: var(--vscode-sidebar);
}

.category-posts::-webkit-scrollbar-thumb {
  background-color: #888;
  border-radius: 3px;
}

.post-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem;
  border-radius: 4px;
  transition: all 0.2s ease;
  margin-bottom: 0.5rem;
}

.post-item:hover {
  background: var(--vscode-active);
}

.post-item i {
  color: #519aba;
  font-size: 1rem;
  flex-shrink: 0;
}

.post-info {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.post-info a {
  color: var(--vscode-text);
  text-decoration: none;
  font-size: 0.95rem;
}

.post-info a:hover {
  color: var(--vscode-accent);
}

.post-info .date {
  color: #808080;
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

.post-info .date i {
  color: #808080;
  font-size: 0.85rem;
}

/* 单个分类详情页 */
.category-detail {
  background: var(--vscode-sidebar);
  border: 1px solid var(--vscode-border);
  border-radius: 4px;
  overflow: hidden;
}

/* ============================================
   分类详情页 Hero 横幅
   ============================================ */
.category-detail-hero {
  position: relative;
  width: 100%;
  height: 200px;
  border-radius: 8px;
  overflow: hidden;
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, var(--vscode-active) 0%, var(--vscode-sidebar) 50%, var(--vscode-bg-light) 100%);
}

.category-detail-hero.has-cover {
  height: 220px;
}

.category-detail-hero-img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
}

.category-detail-hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    to bottom,
    rgba(0, 0, 0, 0.15) 0%,
    rgba(0, 0, 0, 0.55) 100%
  );
  z-index: 1;
}

.category-detail-hero:not(.has-cover) .category-detail-hero-overlay {
  background: none;
}

.category-detail-hero-content {
  position: relative;
  z-index: 2;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 1.5rem;
  color: #fff;
}

.category-detail-hero:not(.has-cover) .category-detail-hero-content {
  color: var(--vscode-text);
}

.category-detail-hero-icon {
  margin-bottom: 0.5rem;
}

.category-detail-hero-icon i {
  font-size: 1.8rem;
  opacity: 0.85;
}

.category-detail-hero:not(.has-cover) .category-detail-hero-icon i {
  color: #dcb67a;
}

.category-detail-hero-title {
  margin: 0 0 0.4rem 0;
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.category-detail-hero:not(.has-cover) .category-detail-hero-title {
  text-shadow: none;
}

.category-detail-hero-desc {
  margin: 0 0 0.6rem 0;
  font-size: 0.9rem;
  opacity: 0.9;
  max-width: 600px;
  line-height: 1.5;
}

.category-detail-hero-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.category-detail-hero-count {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  padding: 4px 12px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.category-detail-hero:not(.has-cover) .category-detail-hero-count {
  background: var(--vscode-active);
  border-color: var(--vscode-border);
  color: var(--vscode-text-light);
}

/* ============================================
   分类详情页 - 文章卡片列表
   ============================================ */
.category-detail-posts {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.category-detail-card {
  display: flex;
  align-items: stretch;
  gap: 1rem;
  padding: 1rem 1.1rem;
  border-bottom: 1px solid var(--vscode-border);
  text-decoration: none;
  color: inherit;
  transition: background 0.2s ease;
  cursor: pointer;
}

.category-detail-card:first-child {
  border-top: 1px solid var(--vscode-border);
}

.category-detail-card:hover {
  background: var(--vscode-active);
  color: inherit;
}

.category-detail-card-body {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.category-detail-card-header {
  display: flex;
  align-items: center;
  gap: 8px;
}

.category-detail-card-header > i {
  color: #519aba;
  font-size: 0.95rem;
  flex-shrink: 0;
}

.category-detail-card-title {
  font-size: 1rem;
  font-weight: 500;
  color: var(--vscode-accent);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: color 0.2s ease;
}

.category-detail-card:hover .category-detail-card-title {
  color: var(--vscode-accent-light);
}

.category-detail-card-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.78rem;
  color: var(--vscode-text-light);
  flex-wrap: wrap;
}

.category-detail-card-meta i {
  margin-right: 3px;
  font-size: 0.72rem;
}

.category-detail-card-tags {
  display: inline-flex;
  gap: 8px;
  flex-wrap: wrap;
}

.category-detail-tag {
  color: var(--vscode-text-light);
  font-size: 0.75rem;
}

.category-detail-card-excerpt {
  margin: 2px 0 0 0;
  font-size: 0.85rem;
  line-height: 1.5;
  color: var(--vscode-text-light);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* 文章缩略图（详情卡片） */
.category-detail-card-thumb {
  flex-shrink: 0;
  width: 120px;
  border-radius: 6px;
  overflow: hidden;
  align-self: center;
}

.category-detail-card-thumb img {
  width: 100%;
  height: 80px;
  object-fit: cover;
  border-radius: 6px;
  border: 1px solid var(--vscode-border);
  transition: transform 0.3s ease;
}

.category-detail-card:hover .category-detail-card-thumb img {
  transform: scale(1.05);
}

/* 专栏卡片描述文字 */
.category-column-desc {
  margin: -0.35rem 0 0.6rem 0;
  font-size: 0.78rem;
  color: var(--vscode-text-light);
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ============================================
   分类专栏卡片视图 (Column/Magazine Style)
   ============================================ */
.categories-column-view {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.category-column-card {
  background: var(--vscode-sidebar);
  border: 1px solid var(--vscode-border);
  border-radius: 8px;
  overflow: hidden;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
  cursor: pointer;
}

.category-column-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
  border-color: var(--vscode-accent);
}

.category-column-link {
  text-decoration: none;
  color: inherit;
  display: block;
}

.category-column-link:hover {
  color: inherit;
}

/* 专栏封面图 */
.category-column-cover {
  position: relative;
  width: 100%;
  height: 160px;
  overflow: hidden;
  background: var(--vscode-active);
}

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

.category-column-card:hover .category-column-cover img {
  transform: scale(1.08);
}

/* 封面占位符（无图时） */
.category-column-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--vscode-active) 0%, var(--vscode-sidebar) 100%);
}

.category-column-placeholder i {
  font-size: 3rem;
  color: var(--vscode-text-light);
  opacity: 0.4;
}

/* 封面渐变遮罩 */
.category-column-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 60%;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.55) 0%, transparent 100%);
  pointer-events: none;
}

/* 文章数量徽章 */
.category-column-badge {
  position: absolute;
  top: 10px;
  right: 10px;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 16px;
  padding: 4px 10px;
  font-size: 0.75rem;
  color: #e0e0e0;
  z-index: 2;
}

/* 专栏信息区 */
.category-column-info {
  padding: 1rem;
}

.category-column-name {
  margin: 0 0 0.75rem 0;
  font-size: 1.1rem;
  color: var(--vscode-text);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
}

.category-column-name i {
  color: #dcb67a;
  font-size: 0.95rem;
}

/* 专栏最近文章预览 */
.category-column-recent {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.category-column-post {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  color: var(--vscode-text-light);
  padding: 4px 6px;
  border-radius: 4px;
  transition: background 0.15s ease, color 0.15s ease;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.category-column-post:hover {
  background: var(--vscode-active);
  color: var(--vscode-text);
}

.category-column-post i {
  color: #519aba;
  font-size: 0.75rem;
  flex-shrink: 0;
}

.category-column-post span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* 列表视图 */
.categories-list-view {
  margin-top: 0;
}

/* ============================================
   文章列表项缩略图（分类/详情页）
   ============================================ */
.post-item.has-thumb {
  display: flex;
  align-items: center;
}

.post-item-thumb {
  flex-shrink: 0;
  width: 52px;
  height: 36px;
  border-radius: 4px;
  overflow: hidden;
  margin-left: auto;
}

.post-item-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 4px;
  border: 1px solid var(--vscode-border);
  transition: transform 0.2s ease;
}

.post-item.has-thumb:hover .post-item-thumb img {
  transform: scale(1.1);
}

/* ============================================
   响应式：专栏视图
   ============================================ */
@media (max-width: 768px) {
  .categories-column-view {
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 1rem;
  }

  .category-column-cover {
    height: 120px;
  }

  .category-column-name {
    font-size: 1rem;
  }

  .category-column-post {
    font-size: 0.78rem;
  }

  .post-item-thumb {
    width: 44px;
    height: 30px;
  }

  /* 分类详情页响应式 */
  .category-detail-hero {
    height: 160px;
  }

  .category-detail-hero.has-cover {
    height: 180px;
  }

  .category-detail-hero-title {
    font-size: 1.35rem;
  }

  .category-detail-hero-desc {
    font-size: 0.82rem;
  }

  .category-detail-card {
    flex-direction: column;
    gap: 0.75rem;
  }

  .category-detail-card-thumb {
    width: 100%;
    order: -1;
  }

  .category-detail-card-thumb img {
    height: 120px;
    width: 100%;
  }
}

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

  .category-column-cover {
    height: 140px;
  }

  .category-detail-hero {
    height: 140px;
  }

  .category-detail-hero.has-cover {
    height: 160px;
  }

  .category-detail-hero-content {
    padding: 1rem;
  }

  .category-detail-hero-title {
    font-size: 1.2rem;
  }

  .category-detail-card-thumb img {
    height: 100px;
  }
}