/* ========================================
   鼻烟壶 - 传统工艺文化网站样式
   www.qingdaihu.cn
   ======================================== */

/* CSS 变量 */
:root {
  --accent-color: #8b4513;
  --accent-light: #a0522d;
  --accent-dark: #5d2f0d;
  --bg-primary: #faf8f5;
  --bg-secondary: #f5f0e8;
  --bg-card: #ffffff;
  --text-primary: #333333;
  --text-secondary: #666666;
  --text-muted: #999999;
  --border-color: #e0d5c5;
  --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --transition: all 0.3s ease;
}

/* 重置样式 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-primary);
  background-color: var(--bg-primary);
}

a {
  color: var(--accent-color);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: var(--accent-dark);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* ========================================
   布局组件
   ======================================== */

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.section {
  padding: 60px 0;
}

.section-title {
  font-size: 28px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 16px;
  text-align: center;
}

.section-subtitle {
  font-size: 16px;
  color: var(--text-secondary);
  text-align: center;
  margin-bottom: 40px;
}

/* ========================================
   页头
   ======================================== */

.header {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--accent-color), var(--accent-light));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 20px;
  font-weight: bold;
}

.logo-text {
  font-size: 22px;
  font-weight: 600;
  color: var(--text-primary);
}

.nav {
  display: flex;
  gap: 32px;
}

.nav a {
  color: var(--text-secondary);
  font-size: 15px;
  font-weight: 500;
  padding: 8px 0;
  position: relative;
}

.nav a:hover,
.nav a.active {
  color: var(--accent-color);
}

.nav a.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--accent-color);
}

.search-box {
  display: flex;
  align-items: center;
  background: var(--bg-secondary);
  border-radius: 20px;
  padding: 8px 16px;
  gap: 8px;
}

.search-box input {
  border: none;
  background: none;
  outline: none;
  font-size: 14px;
  width: 160px;
}

.search-box button {
  border: none;
  background: none;
  cursor: pointer;
  color: var(--text-muted);
}

/* ========================================
   个人资料头部 (Hero)
   ======================================== */

.profile-header {
  background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
  padding: 60px 0 40px;
  text-align: center;
}

.profile-avatar {
  width: 140px;
  height: 140px;
  background: linear-gradient(135deg, var(--accent-color), var(--accent-light));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 24px;
  font-size: 60px;
  color: white;
  box-shadow: var(--shadow-lg);
}

.profile-name {
  font-size: 36px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.profile-role {
  font-size: 18px;
  color: var(--accent-color);
  font-weight: 500;
  margin-bottom: 16px;
}

.profile-bio {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 24px;
  line-height: 1.8;
}

.profile-stats {
  display: flex;
  justify-content: center;
  gap: 48px;
  margin-bottom: 24px;
}

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

.stat-value {
  font-size: 28px;
  font-weight: 700;
  color: var(--accent-color);
}

.stat-label {
  font-size: 14px;
  color: var(--text-muted);
}

.profile-social {
  display: flex;
  justify-content: center;
  gap: 16px;
}

.social-link {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 24px;
  font-size: 14px;
  color: var(--text-secondary);
  transition: var(--transition);
}

.social-link:hover {
  border-color: var(--accent-color);
  color: var(--accent-color);
  box-shadow: var(--shadow-sm);
}

/* ========================================
   内容卡片
   ======================================== */

.content-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.content-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  border: 1px solid var(--border-color);
}

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

.card-image {
  width: 100%;
  height: 180px;
  background: linear-gradient(135deg, var(--bg-secondary), var(--border-color));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 48px;
}

.card-body {
  padding: 20px;
}

.card-category {
  font-size: 12px;
  color: var(--accent-color);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}

.card-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 12px;
  line-height: 1.4;
}

.card-title a {
  color: inherit;
}

.card-title a:hover {
  color: var(--accent-color);
}

.card-excerpt {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 13px;
  color: var(--text-muted);
}

.card-meta span {
  display: flex;
  align-items: center;
  gap: 4px;
}

/* ========================================
   列表项
   ======================================== */

.content-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.list-item {
  display: flex;
  gap: 20px;
  padding: 20px;
  background: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  transition: var(--transition);
}

.list-item:hover {
  box-shadow: var(--shadow-sm);
}

.list-image {
  width: 160px;
  height: 120px;
  background: linear-gradient(135deg, var(--bg-secondary), var(--border-color));
  border-radius: var(--radius-sm);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 36px;
}

.list-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.list-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
}

.list-title a {
  color: var(--text-primary);
}

.list-title a:hover {
  color: var(--accent-color);
}

.list-excerpt {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.list-meta {
  display: flex;
  gap: 16px;
  font-size: 13px;
  color: var(--text-muted);
}

/* ========================================
   面包屑
   ======================================== */

.breadcrumb {
  background: var(--bg-secondary);
  padding: 16px 0;
  font-size: 14px;
}

.breadcrumb a {
  color: var(--text-secondary);
}

.breadcrumb a:hover {
  color: var(--accent-color);
}

.breadcrumb-separator {
  margin: 0 8px;
  color: var(--text-muted);
}

.breadcrumb-current {
  color: var(--text-primary);
  font-weight: 500;
}

/* ========================================
   分类头部
   ======================================== */

.category-header {
  background: var(--bg-secondary);
  padding: 40px 0;
  text-align: center;
}

.category-title {
  font-size: 32px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.category-desc {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 20px;
}

.category-stats {
  display: flex;
  justify-content: center;
  gap: 32px;
  font-size: 14px;
  color: var(--text-muted);
}

/* ========================================
   文章页
   ======================================== */

.article-header {
  max-width: 800px;
  margin: 0 auto;
  padding: 40px 20px;
  text-align: center;
}

.article-title {
  font-size: 36px;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.4;
  margin-bottom: 20px;
}

.article-meta {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 20px;
  font-size: 14px;
  color: var(--text-secondary);
}

.article-meta span {
  display: flex;
  align-items: center;
  gap: 6px;
}

.article-featured-image {
  max-width: 800px;
  margin: 0 auto 40px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.article-featured-image img {
  width: 100%;
  height: auto;
}

.article-content {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 20px 60px;
  font-size: 17px;
  line-height: 1.9;
  color: var(--text-primary);
}

.article-content h2 {
  font-size: 26px;
  font-weight: 600;
  margin: 40px 0 20px;
  color: var(--text-primary);
}

.article-content h3 {
  font-size: 22px;
  font-weight: 600;
  margin: 32px 0 16px;
  color: var(--text-primary);
}

.article-content p {
  margin-bottom: 20px;
}

.article-content ul,
.article-content ol {
  margin-bottom: 20px;
  padding-left: 24px;
}

.article-content li {
  margin-bottom: 8px;
}

.article-content blockquote {
  border-left: 4px solid var(--accent-color);
  padding-left: 20px;
  margin: 24px 0;
  color: var(--text-secondary);
  font-style: italic;
}

.article-content img {
  border-radius: var(--radius-md);
  margin: 24px 0;
}

/* ========================================
   侧边栏模块
   ======================================== */

.sidebar-section {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 20px;
  margin-bottom: 24px;
  border: 1px solid var(--border-color);
}

.sidebar-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-color);
}

.sidebar-list {
  list-style: none;
}

.sidebar-list li {
  padding: 10px 0;
  border-bottom: 1px solid var(--border-color);
}

.sidebar-list li:last-child {
  border-bottom: none;
}

.sidebar-list a {
  color: var(--text-secondary);
  font-size: 14px;
  display: flex;
  justify-content: space-between;
}

.sidebar-list a:hover {
  color: var(--accent-color);
}

.sidebar-list .count {
  color: var(--text-muted);
  font-size: 12px;
}

/* ========================================
   分页
   ======================================== */

.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  margin-top: 40px;
}

.pagination a,
.pagination span {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 12px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  color: var(--text-secondary);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  transition: var(--transition);
}

.pagination a:hover {
  border-color: var(--accent-color);
  color: var(--accent-color);
}

.pagination .current {
  background: var(--accent-color);
  border-color: var(--accent-color);
  color: white;
}

.pagination .prev,
.pagination .next {
  padding: 0 16px;
}

/* ========================================
   页脚
   ======================================== */

.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 48px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand .logo {
  margin-bottom: 16px;
}

.footer-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.footer-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  font-size: 14px;
  color: var(--text-secondary);
}

.footer-links a:hover {
  color: var(--accent-color);
}

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 14px;
  color: var(--text-muted);
}

/* ========================================
   404 页面
   ======================================== */

.error-page {
  min-height: 60vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 60px 20px;
}

.error-code {
  font-size: 120px;
  font-weight: 700;
  color: var(--accent-color);
  line-height: 1;
  margin-bottom: 20px;
  opacity: 0.3;
}

.error-title {
  font-size: 28px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.error-desc {
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: 32px;
}

.error-actions {
  display: flex;
  gap: 16px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 500;
  transition: var(--transition);
  cursor: pointer;
  border: none;
}

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

.btn-primary:hover {
  background: var(--accent-dark);
  color: white;
}

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

.btn-secondary:hover {
  border-color: var(--accent-color);
  color: var(--accent-color);
}

/* ========================================
   两栏布局
   ======================================== */

.two-column {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 40px;
}

.main-content {
  min-width: 0;
}

.sidebar {
  min-width: 0;
}

/* ========================================
   响应式设计
   ======================================== */

@media (max-width: 1024px) {
  .content-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .two-column {
    grid-template-columns: 1fr;
  }

  .sidebar {
    order: 2;
  }

  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .header-inner {
    flex-wrap: wrap;
    height: auto;
    padding: 12px 0;
    gap: 12px;
  }

  .nav {
    order: 3;
    width: 100%;
    justify-content: center;
    gap: 20px;
    padding-top: 8px;
    border-top: 1px solid var(--border-color);
  }

  .search-box {
    display: none;
  }

  .profile-name {
    font-size: 28px;
  }

  .profile-stats {
    gap: 24px;
  }

  .content-grid {
    grid-template-columns: 1fr;
  }

  .list-item {
    flex-direction: column;
  }

  .list-image {
    width: 100%;
    height: 180px;
  }

  .article-title {
    font-size: 26px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }

  .error-code {
    font-size: 80px;
  }
}

@media (max-width: 480px) {
  .section {
    padding: 40px 0;
  }

  .section-title {
    font-size: 24px;
  }

  .profile-avatar {
    width: 100px;
    height: 100px;
    font-size: 40px;
  }

  .profile-social {
    flex-wrap: wrap;
    justify-content: center;
  }

  .social-link {
    padding: 8px 16px;
    font-size: 13px;
  }

  .article-content {
    font-size: 16px;
  }

  .article-content h2 {
    font-size: 22px;
  }

  .article-content h3 {
    font-size: 18px;
  }

  .pagination {
    flex-wrap: wrap;
  }
}