/* ==============================
   老人帮分类页样式 lb_category.css v2.0
   暖色系设计，引用 lb_common.css 全局变量
   ============================== */

/* --- 页面基础 --- */
.lb-category-page {
  font-size: 16px;
  line-height: var(--line-height);
  color: var(--color-text);
  background: var(--color-bg);
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
}

/* --- 动画关键帧 --- */
@keyframes lbFadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes lbFadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* ================================
   1. 分类 Banner
   ================================ */
.lb-cat-banner {
  position: relative;
  width: 100%;
  padding: 60px 20px 80px;
  background: linear-gradient(135deg, #E8613A 0%, #F5A623 100%);
  text-align: center;
  overflow: hidden;
  animation: lbFadeIn 0.5s ease;
}

/* Banner装饰圆 */
.lb-cat-banner::before {
  content: '';
  position: absolute;
  top: -60px;
  right: -60px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  pointer-events: none;
}

.lb-cat-banner::after {
  content: '';
  position: absolute;
  bottom: -40px;
  left: -40px;
  width: 160px;
  height: 160px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
  pointer-events: none;
}

.lb-cat-title {
  font-size: 32px;
  font-weight: 700;
  color: #FFFFFF;
  margin: 0 0 8px;
  position: relative;
  z-index: 1;
}

.lb-cat-desc {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.85);
  margin: 0;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  position: relative;
  z-index: 1;
}

/* Banner底部波浪 */
.lb-cat-banner-wave {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  line-height: 0;
  z-index: 2;
}

.lb-cat-banner-wave svg {
  display: block;
  width: 100%;
  height: 60px;
}

/* ================================
   2. 筛选工具栏
   ================================ */
.lb-cat-filter {
  display: flex;
  align-items: center;
  border-bottom: 1px solid #E5E7EB;
  margin-top: 0;
  margin-bottom: 32px;
  padding-top: 24px;
}

.lb-filter-tab {
  padding: 12px 0;
  margin-right: 32px;
  font-size: 16px;
  font-weight: 400;
  color: var(--color-text-light);
  cursor: pointer;
  transition: var(--transition);
  border-bottom: 3px solid transparent;
  user-select: none;
}

.lb-filter-tab:hover {
  color: var(--color-text-secondary);
}

.lb-filter-tab.active {
  color: var(--color-primary);
  font-weight: 600;
  border-bottom-color: var(--color-primary);
}

/* ================================
   3. 文章卡片网格
   ================================ */
.lb-cat-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  align-items: stretch;
}

/* --- 单张卡片 --- */
.lb-cat-card {
  background: var(--color-card);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  display: flex;
  flex-direction: column;
  animation: lbFadeInUp 0.5s ease both;
}

.lb-cat-card:nth-child(2) { animation-delay: 0.08s; }
.lb-cat-card:nth-child(3) { animation-delay: 0.16s; }
.lb-cat-card:nth-child(4) { animation-delay: 0.24s; }
.lb-cat-card:nth-child(5) { animation-delay: 0.32s; }
.lb-cat-card:nth-child(6) { animation-delay: 0.40s; }

.lb-cat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

/* 顶部色条 */
.lb-cat-card-top-bar {
  height: 4px;
  background: var(--gradient-primary);
  flex-shrink: 0;
}

/* 卡片内容 */
.lb-cat-card-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

/* 分类标签 - pill形状 */
.lb-cat-card-body .lb-tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  font-size: 14px;
  font-weight: 500;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  color: #FFFFFF;
  margin-bottom: 12px;
  align-self: flex-start;
}

.lb-cat-card-body .lb-tag a {
  color: #FFFFFF;
  text-decoration: none;
}

.lb-cat-card-body .lb-tag a:hover {
  text-decoration: underline;
}

/* 文章标题 */
.lb-cat-card-title {
  font-size: 18px;
  font-weight: 600;
  margin: 0 0 8px;
  line-height: 1.5;
}

.lb-cat-card-title a {
  color: var(--color-text);
  text-decoration: none;
  transition: var(--transition-fast);
}

.lb-cat-card-title a:hover {
  color: var(--color-primary);
}

/* 摘要文字 */
.lb-cat-card-excerpt {
  font-size: 16px;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin: 0 0 16px;
  flex: 1;
}

/* 底部元信息行 */
.lb-cat-card-meta {
  display: flex;
  align-items: center;
  font-size: 14px;
  color: var(--color-text-light);
  gap: 12px;
  padding-top: 16px;
  border-top: 1px solid #F1F5F9;
  margin-top: auto;
}

.lb-cat-card-author {
  color: var(--color-text-light);
  font-weight: 400;
}

.lb-cat-card-date {
  color: var(--color-text-light);
}

.lb-cat-card-link {
  margin-left: auto;
  color: var(--color-primary);
  font-weight: 500;
  font-size: 14px;
  text-decoration: none;
  transition: var(--transition-fast);
}

.lb-cat-card-link:hover {
  color: var(--color-primary-dark);
  text-decoration: underline;
}

/* --- 无文章提示 --- */
.lb-no-posts {
  color: var(--color-text-light);
  font-size: 16px;
  text-align: center;
  padding: 60px 0;
  grid-column: 1 / -1;
}

/* ================================
   4. 分页导航
   ================================ */
.lb-cat-pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  margin-top: 40px;
  padding-top: 24px;
}

.lb-cat-pagination .nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
}

.lb-cat-pagination .page-numbers {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 12px;
  border-radius: var(--radius-md);
  border: 1px solid #E2E8F0;
  background: #FFFFFF;
  color: var(--color-text-light);
  font-size: 15px;
  font-weight: 500;
  text-decoration: none;
  transition: all 0.3s;
}

.lb-cat-pagination .page-numbers:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-light);
}

.lb-cat-pagination .page-numbers.current {
  background: var(--color-primary);
  color: #FFFFFF;
  border-color: transparent;
  box-shadow: 0 2px 8px rgba(232, 97, 58, 0.3);
}

.lb-cat-pagination .page-numbers.dots {
  border: none;
  background: none;
  cursor: default;
  min-width: auto;
}

.lb-cat-pagination .page-numbers.next,
.lb-cat-pagination .page-numbers.prev {
  font-weight: 600;
}

/* ================================
   响应式 - 768px~1023px 平板
   ================================ */
@media (max-width: 1023px) {
  .lb-cat-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
}

/* ================================
   响应式 - <768px 手机
   ================================ */
@media (max-width: 767px) {
  .lb-cat-banner {
    padding: 40px 16px 60px;
  }

  .lb-cat-title {
    font-size: 24px;
  }

  .lb-cat-desc {
    font-size: 14px;
  }

  .lb-cat-filter {
    margin-bottom: 24px;
    padding-top: 16px;
  }

  .lb-filter-tab {
    margin-right: 24px;
    font-size: 15px;
  }

  .lb-cat-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .lb-cat-card-body {
    padding: 20px;
  }

  .lb-cat-card-title {
    font-size: 17px;
  }

  .lb-cat-card-excerpt {
    font-size: 15px;
  }

  .lb-cat-pagination .page-numbers {
    min-width: 36px;
    height: 36px;
    font-size: 14px;
  }
}