/* 显微摄影 - 资源导航风格样式 */

/* CSS 变量 */
:root {
  --accent-color: #2196f3;
  --accent-dark: #1976d2;
  --text-primary: #333;
  --text-secondary: #666;
  --text-muted: #999;
  --bg-primary: #fff;
  --bg-secondary: #f5f7fa;
  --bg-card: #fff;
  --border-color: #e8e8e8;
  --shadow: 0 2px 8px rgba(0,0,0,0.08);
  --shadow-hover: 0 4px 16px rgba(0,0,0,0.12);
  --radius: 8px;
  --radius-lg: 12px;
  --max-width: 1200px;
  --header-height: 64px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-secondary);
}

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

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

ul {
  list-style: none;
}

/* 容器 */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

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

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: var(--accent-color);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 18px;
}

.nav {
  display: flex;
  gap: 30px;
}

.nav a {
  color: var(--text-secondary);
  font-weight: 500;
  transition: color 0.2s;
}

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

/* 搜索框 */
.search-box {
  position: relative;
  max-width: 600px;
  margin: 0 auto;
}

.search-box input {
  width: 100%;
  padding: 16px 50px 16px 20px;
  font-size: 16px;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-lg);
  background: var(--bg-primary);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.search-box input:focus {
  outline: none;
  border-color: var(--accent-color);
  box-shadow: 0 0 0 3px rgba(33, 150, 243, 0.1);
}

.search-box button {
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  width: 40px;
  height: 40px;
  border: none;
  background: var(--accent-color);
  color: #fff;
  border-radius: var(--radius);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Hero 区域 */
.hero {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  padding: 60px 0;
  text-align: center;
  color: #fff;
}

.hero-title {
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 12px;
}

.hero-desc {
  font-size: 16px;
  opacity: 0.9;
  margin-bottom: 30px;
}

/* 分类筛选 */
.category-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  margin-top: 30px;
}

.category-btn {
  padding: 10px 20px;
  background: rgba(255,255,255,0.2);
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: 30px;
  color: #fff;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.2s;
}

.category-btn:hover,
.category-btn.active {
  background: #fff;
  color: var(--accent-color);
}

/* 面包屑 */
.breadcrumb {
  padding: 16px 0;
  font-size: 13px;
  color: var(--text-muted);
}

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

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

.breadcrumb span {
  margin: 0 8px;
}

/* 区块标题 */
.section-title {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.section-title::before {
  content: '';
  width: 4px;
  height: 20px;
  background: var(--accent-color);
  border-radius: 2px;
}

/* 链接卡片 */
.link-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow);
  transition: box-shadow 0.2s, transform 0.2s;
  border: 1px solid var(--border-color);
}

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

.link-header {
  display: flex;
  align-items: flex-start;
  gap: 15px;
  margin-bottom: 12px;
}

.link-icon {
  width: 48px;
  height: 48px;
  background: var(--bg-secondary);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  flex-shrink: 0;
}

.link-info h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 4px;
}

.link-info .url {
  font-size: 12px;
  color: var(--text-muted);
}

.link-desc {
  color: var(--text-secondary);
  font-size: 13px;
  line-height: 1.7;
  margin-bottom: 12px;
}

.link-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 12px;
  color: var(--text-muted);
}

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

.verified {
  color: #4caf50;
}

/* 评分星星 */
.rating {
  display: flex;
  gap: 2px;
  color: #ffc107;
}

/* 链接列表 */
.link-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* 分类网格 */
.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 30px;
}

.category-item {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
  border: 1px solid var(--border-color);
  transition: all 0.2s;
  cursor: pointer;
}

.category-item:hover {
  border-color: var(--accent-color);
  box-shadow: var(--shadow);
}

.category-item .icon {
  width: 48px;
  height: 48px;
  background: var(--bg-secondary);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 12px;
  font-size: 24px;
}

.category-item h4 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 4px;
}

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

/* 子分类标签 */
.sub-categories {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 24px;
}

.sub-category {
  padding: 8px 16px;
  background: var(--bg-secondary);
  border-radius: 20px;
  font-size: 13px;
  color: var(--text-secondary);
  transition: all 0.2s;
}

.sub-category:hover,
.sub-category.active {
  background: var(--accent-color);
  color: #fff;
}

/* 文章卡片 */
.article-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid var(--border-color);
}

.article-image {
  width: 100%;
  height: 180px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 48px;
}

.article-content {
  padding: 16px;
}

.article-content h3 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 8px;
  line-height: 1.5;
}

.article-content .meta {
  font-size: 12px;
  color: var(--text-muted);
}

/* 文章列表 */
.article-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.article-item {
  display: flex;
  gap: 12px;
  padding: 12px;
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
  transition: all 0.2s;
}

.article-item:hover {
  border-color: var(--accent-color);
}

.article-item .thumb {
  width: 80px;
  height: 60px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border-radius: var(--radius);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 24px;
}

.article-item .info {
  flex: 1;
  min-width: 0;
}

.article-item h4 {
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 6px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.article-item .meta {
  font-size: 12px;
  color: var(--text-muted);
}

/* 网格布局 */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

/* 内容区域 */
.main-content {
  padding: 30px 0;
}

.content-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 30px;
}

/* 侧边栏 */
.sidebar-section {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 20px;
  margin-bottom: 20px;
  border: 1px solid var(--border-color);
}

.sidebar-title {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-color);
}

.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);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

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

.sidebar-list .count {
  font-size: 12px;
  color: var(--text-muted);
  background: var(--bg-secondary);
  padding: 2px 8px;
  border-radius: 10px;
}

/* 分页 */
.pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 30px;
}

.pagination a,
.pagination span {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  padding: 0 12px;
  border-radius: var(--radius);
  font-size: 14px;
  transition: all 0.2s;
}

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

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

.pagination .current {
  background: var(--accent-color);
  color: #fff;
}

.pagination .disabled {
  color: var(--text-muted);
  cursor: not-allowed;
}

/* 统计信息 */
.stats-bar {
  display: flex;
  justify-content: center;
  gap: 40px;
  padding: 20px;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  margin-top: 30px;
  border: 1px solid var(--border-color);
}

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

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

.stat-label {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 4px;
}

/* 文章详情页 */
.article-header {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 30px;
  margin-bottom: 20px;
  border: 1px solid var(--border-color);
}

.article-title {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 16px;
  line-height: 1.4;
}

.article-meta-bar {
  display: flex;
  align-items: center;
  gap: 20px;
  color: var(--text-muted);
  font-size: 13px;
}

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

.article-body {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 30px;
  border: 1px solid var(--border-color);
  line-height: 1.8;
}

.article-body h2 {
  font-size: 22px;
  font-weight: 600;
  margin: 30px 0 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-color);
}

.article-body h3 {
  font-size: 18px;
  font-weight: 600;
  margin: 24px 0 12px;
}

.article-body p {
  margin-bottom: 16px;
  color: var(--text-secondary);
}

.article-body ul,
.article-body ol {
  margin-bottom: 16px;
  padding-left: 24px;
}

.article-body li {
  margin-bottom: 8px;
  color: var(--text-secondary);
}

.article-body img {
  max-width: 100%;
  border-radius: var(--radius);
  margin: 20px 0;
}

/* 标签 */
.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}

.tag {
  padding: 6px 12px;
  background: var(--bg-secondary);
  border-radius: 4px;
  font-size: 12px;
  color: var(--text-secondary);
}

/* 详情信息 */
.detail-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 24px;
  border: 1px solid var(--border-color);
  margin-bottom: 20px;
}

.detail-row {
  display: flex;
  padding: 12px 0;
  border-bottom: 1px solid var(--border-color);
}

.detail-row:last-child {
  border-bottom: none;
}

.detail-label {
  width: 120px;
  color: var(--text-muted);
  font-size: 13px;
}

.detail-value {
  flex: 1;
  color: var(--text-primary);
  font-size: 14px;
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 500;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  transition: all 0.2s;
}

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

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

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

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

.btn-group {
  display: flex;
  gap: 12px;
  margin-top: 16px;
}

/* 相关链接 */
.related-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 20px;
}

.related-link {
  background: var(--bg-secondary);
  border-radius: var(--radius);
  padding: 16px;
  text-align: center;
  transition: all 0.2s;
}

.related-link:hover {
  background: var(--accent-color);
  color: #fff;
}

.related-link:hover h4 {
  color: #fff;
}

.related-link h4 {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.related-link .url {
  font-size: 12px;
  opacity: 0.7;
}

/* 404 页面 */
.error-page {
  text-align: center;
  padding: 80px 20px;
}

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

.error-title {
  font-size: 24px;
  font-weight: 600;
  margin-bottom: 12px;
}

.error-desc {
  color: var(--text-secondary);
  margin-bottom: 30px;
}

/* 页脚 */
.footer {
  background: var(--bg-primary);
  border-top: 1px solid var(--border-color);
  padding: 40px 0 20px;
  margin-top: 60px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 30px;
}

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

.footer-brand p {
  color: var(--text-secondary);
  font-size: 13px;
  line-height: 1.8;
}

.footer-title {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 16px;
}

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

.footer-links a {
  color: var(--text-secondary);
  font-size: 13px;
}

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

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: var(--text-muted);
}

/* 响应式设计 */
@media (max-width: 1024px) {
  .content-layout {
    grid-template-columns: 1fr;
  }

  .sidebar {
    order: 2;
  }

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

@media (max-width: 768px) {
  .header .container {
    flex-wrap: wrap;
    height: auto;
    padding: 12px 20px;
  }

  .nav {
    width: 100%;
    justify-content: center;
    margin-top: 12px;
    gap: 20px;
  }

  .hero {
    padding: 40px 0;
  }

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

  .grid-3,
  .grid-2 {
    grid-template-columns: 1fr;
  }

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

  .related-links {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }

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

  .stats-bar {
    flex-direction: column;
    gap: 20px;
  }

  .article-title {
    font-size: 20px;
  }

  .article-meta-bar {
    flex-wrap: wrap;
    gap: 12px;
  }
}

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

  .sub-categories {
    justify-content: center;
  }

  .pagination {
    flex-wrap: wrap;
  }
}