/* ============================================
   缀雨博客 · 标签分类页样式
   ============================================ */

/* ---- 页面头部 ---- */
.page-header {
  padding: 60px 0 40px;
  text-align: center;
}
.page-title {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 400;
  color: var(--text);
  margin-bottom: 12px;
  letter-spacing: 0.05em;
}
.page-desc {
  color: var(--text-muted);
  font-size: 0.95rem;
  letter-spacing: 0.02em;
}

/* ---- 标签云 ---- */
.tag-cloud-section {
  margin-bottom: 40px;
}

.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  padding: 32px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  backdrop-filter: blur(8px);
}

.tag-cloud-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  background: var(--tag-bg);
  border: 1px solid var(--tag-border);
  border-radius: 20px;
  font-size: 0.9rem;
  color: var(--accent);
  cursor: pointer;
  transition: all var(--transition);
  user-select: none;
}
.tag-cloud-item:hover,
.tag-cloud-item.active {
  background: rgba(121,192,255,0.2);
  border-color: var(--accent);
  transform: scale(1.05);
  box-shadow: 0 0 16px var(--accent-glow);
}
.tag-cloud-item.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.tag-count {
  font-size: 0.75rem;
  background: rgba(121,192,255,0.15);
  border-radius: 10px;
  padding: 1px 8px;
  color: var(--accent);
  font-weight: 500;
  transition: all var(--transition);
}
.tag-cloud-item:hover .tag-count,
.tag-cloud-item.active .tag-count {
  background: rgba(255,255,255,0.25);
  color: inherit;
}

/* ---- 标签筛选信息 ---- */
.tag-filter-info {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 32px;
  padding: 16px 24px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  backdrop-filter: blur(8px);
  animation: fadeInUp 0.3s ease both;
}
.tag-filter-info h2 {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 400;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 8px;
}

.clear-filter {
  padding: 6px 14px;
  background: rgba(255,100,100,0.1);
  border: 1px solid rgba(255,100,100,0.2);
  border-radius: 20px;
  color: #ff8080;
  font-size: 0.85rem;
  font-family: var(--font-sans);
  cursor: pointer;
  transition: all var(--transition);
}
.clear-filter:hover {
  background: rgba(255,100,100,0.2);
  border-color: rgba(255,100,100,0.4);
  transform: scale(1.02);
}

/* ---- 文章区域 ---- */
.articles-section {
  padding-bottom: 80px;
}

.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}

/* ---- 文章卡片 (标签页专用) ---- */
.article-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: all var(--transition);
  cursor: pointer;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 12px;
  backdrop-filter: blur(8px);
  animation: fadeInUp 0.4s ease both;
}

.article-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 3px; height: 100%;
  background: linear-gradient(180deg, var(--accent), transparent);
  opacity: 0;
  transition: opacity var(--transition);
}
.article-card:hover {
  background: var(--card-hover);
  border-color: rgba(121,192,255,0.2);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.article-card:hover::before { opacity: 1; }

.article-card .card-title {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--text);
  line-height: 1.5;
  transition: color var(--transition);
}
.article-card:hover .card-title { color: var(--accent); }
.article-card .card-title a {
  color: inherit;
  text-decoration: none;
}

.article-card .card-excerpt {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}

.article-card .card-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: auto;
}
.article-card .meta-date {
  display: flex;
  align-items: center;
  gap: 4px;
}
.article-card .meta-read {
  display: flex;
  align-items: center;
  gap: 4px;
}

.article-card .card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.tag-pill {
  padding: 2px 10px;
  background: var(--tag-bg);
  border: 1px solid var(--tag-border);
  border-radius: 12px;
  font-size: 0.75rem;
  color: var(--accent);
  transition: all var(--transition);
  cursor: pointer;
}
.tag-pill:hover {
  background: rgba(121,192,255,0.18);
  transform: scale(1.05);
}

/* ---- 空状态 ---- */
.empty-state {
  text-align: center;
  padding: 80px 24px;
  color: var(--text-muted);
}
.empty-icon {
  font-size: 4rem;
  display: block;
  margin-bottom: 16px;
  opacity: 0.6;
}
.empty-text {
  font-size: 1rem;
  color: var(--text-muted);
}

/* ---- 骨架屏 ---- */
.skeleton-tag-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* ---- 响应式 ---- */
@media (max-width: 768px) {
  .page-header { padding: 40px 0 28px; }
  .page-title { font-size: 1.6rem; }
  .tag-cloud { padding: 24px 16px; gap: 10px; }
  .tag-cloud-item { padding: 6px 14px; font-size: 0.85rem; }
  .articles-grid { grid-template-columns: 1fr; }
  .tag-filter-info {
    flex-direction: column;
    gap: 12px;
    align-items: flex-start;
  }
}
@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .page-title { font-size: 1.4rem; }
  .tag-cloud-item { padding: 5px 12px; font-size: 0.8rem; }
}