/* ============================================
   野外露营 - 野外露营指南网站样式
   www.beibaocp.cn - 提供野外露营的全面指南
   ============================================ */

/* CSS 变量 */
:root {
  --accent-color: #2d6a4f;
  --accent-light: #40916c;
  --accent-dark: #1b4332;
  --text-primary: #1a1a1a;
  --text-secondary: #666;
  --text-muted: #999;
  --bg-primary: #fff;
  --bg-secondary: #f8f9fa;
  --bg-tertiary: #e9ecef;
  --border-color: #dee2e6;
  --shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  --radius: 8px;
  --radius-lg: 12px;
  --max-width: 1200px;
  --content-width: 800px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

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

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

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

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

ul, ol {
  list-style: none;
}

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

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

.content-wrap {
  max-width: var(--content-width);
  margin: 0 auto;
}

/* ============================================
   头部导航
   ============================================ */

.header {
  background: var(--bg-primary);
  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: 64px;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent-color);
}

.logo span {
  color: var(--text-primary);
}

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

.nav a {
  color: var(--text-secondary);
  font-weight: 500;
  padding: 8px 0;
  border-bottom: 2px solid transparent;
  transition: all 0.2s;
}

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

.search-box {
  display: flex;
  align-items: center;
  gap: 8px;
}

.search-box input {
  width: 200px;
  padding: 8px 12px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  font-size: 0.875rem;
}

.search-box input:focus {
  outline: none;
  border-color: var(--accent-color);
}

.search-box button {
  padding: 8px 16px;
  background: var(--accent-color);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 0.875rem;
}

.search-box button:hover {
  background: var(--accent-dark);
}

/* ============================================
   Hero 区域
   ============================================ */

.hero {
  background: linear-gradient(135deg, var(--accent-dark) 0%, var(--accent-color) 100%);
  color: #fff;
  padding: 80px 0;
  text-align: center;
}

.hero-title {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.hero-desc {
  font-size: 1.125rem;
  opacity: 0.9;
  max-width: 600px;
  margin: 0 auto 32px;
}

.hero-cta {
  display: inline-flex;
  gap: 16px;
}

.btn {
  display: inline-flex;
  align-items: center;
  padding: 12px 24px;
  border-radius: var(--radius);
  font-weight: 500;
  transition: all 0.2s;
}

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

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

.btn-secondary {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255, 255, 255, 0.5);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: #fff;
}

/* ============================================
   面包屑导航
   ============================================ */

.breadcrumb {
  background: var(--bg-secondary);
  padding: 16px 0;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

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

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

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

/* ============================================
   分类导航
   ============================================ */

.category-nav {
  padding: 48px 0;
  background: var(--bg-secondary);
}

.section-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 24px;
  text-align: center;
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.category-card {
  background: var(--bg-primary);
  padding: 24px;
  border-radius: var(--radius-lg);
  text-align: center;
  box-shadow: var(--shadow);
  transition: transform 0.2s;
}

.category-card:hover {
  transform: translateY(-4px);
}

.category-icon {
  width: 48px;
  height: 48px;
  background: var(--accent-light);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 12px;
  font-size: 1.5rem;
}

.category-card h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.category-card p {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

/* ============================================
   内容列表
   ============================================ */

.content-section {
  padding: 48px 0;
}

.content-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.content-item {
  display: flex;
  gap: 20px;
  padding: 20px;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  transition: box-shadow 0.2s;
}

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

.content-thumb {
  width: 200px;
  height: 140px;
  background: var(--bg-tertiary);
  border-radius: var(--radius);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 0.875rem;
}

.content-info {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.content-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

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

.content-tag {
  display: inline-block;
  padding: 2px 8px;
  background: var(--accent-light);
  color: #fff;
  border-radius: 4px;
  font-size: 0.75rem;
}

.content-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-primary);
}

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

.content-desc {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.6;
  flex: 1;
}

.content-stats {
  display: flex;
  gap: 16px;
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-top: 12px;
}

/* ============================================
   三栏推荐区域
   ============================================ */

.recommend-section {
  background: var(--bg-secondary);
  padding: 48px 0;
}

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

.recommend-box {
  background: var(--bg-primary);
  padding: 24px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.recommend-box h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--accent-light);
}

.recommend-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.recommend-list li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.recommend-list li::before {
  content: "•";
  color: var(--accent-color);
  font-weight: bold;
}

.recommend-list a {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.5;
}

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

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

.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  margin-top: 40px;
  padding-top: 40px;
  border-top: 1px solid var(--border-color);
}

.pagination a,
.pagination span {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 12px;
  border-radius: var(--radius);
  font-size: 0.9375rem;
}

.pagination a {
  color: var(--text-secondary);
  background: var(--bg-secondary);
}

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

.pagination .current {
  background: var(--accent-color);
  color: #fff;
  font-weight: 500;
}

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

/* ============================================
   文章详情页
   ============================================ */

.article-header {
  padding: 40px 0 32px;
  text-align: center;
}

.article-category {
  display: inline-block;
  padding: 4px 12px;
  background: var(--accent-light);
  color: #fff;
  border-radius: 4px;
  font-size: 0.875rem;
  margin-bottom: 16px;
}

.article-title {
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 20px;
}

.article-meta {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 24px;
  font-size: 0.9375rem;
  color: var(--text-secondary);
}

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

.article-featured {
  width: 100%;
  height: 400px;
  background: var(--bg-tertiary);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  margin-bottom: 40px;
}

.article-content {
  font-size: 1.0625rem;
  line-height: 1.8;
}

.article-content h2 {
  font-size: 1.5rem;
  font-weight: 600;
  margin: 40px 0 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--border-color);
}

.article-content h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin: 32px 0 16px;
}

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

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

.article-content ul li {
  list-style: disc;
  margin-bottom: 8px;
}

.article-content ol li {
  list-style: decimal;
  margin-bottom: 8px;
}

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

/* 步骤组件 */
.steps-overview {
  background: var(--bg-secondary);
  padding: 24px;
  border-radius: var(--radius-lg);
  margin: 32px 0;
}

.steps-overview h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 16px;
}

.step-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--border-color);
}

.step-item:last-child {
  border-bottom: none;
}

.step-number {
  width: 28px;
  height: 28px;
  background: var(--accent-color);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.875rem;
  font-weight: 600;
  flex-shrink: 0;
}

.step-item.completed .step-number {
  background: var(--accent-light);
}

.step-item.pending .step-number {
  background: var(--text-muted);
}

.step-title {
  flex: 1;
  font-weight: 500;
}

.step-status {
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* 提示框 */
.tip-box {
  background: #e8f5e9;
  border-left: 4px solid var(--accent-color);
  padding: 16px 20px;
  margin: 24px 0;
  border-radius: 0 var(--radius) var(--radius) 0;
}

.tip-box-title {
  font-weight: 600;
  color: var(--accent-dark);
  margin-bottom: 8px;
}

.tip-box p {
  margin: 0;
  color: var(--text-secondary);
}

/* 检查清单 */
.checklist {
  background: var(--bg-secondary);
  padding: 24px;
  border-radius: var(--radius-lg);
  margin: 24px 0;
}

.checklist h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 16px;
}

.checklist-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 0;
}

.checklist-item input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--accent-color);
}

/* 相关文章 */
.related-section {
  padding: 48px 0;
  border-top: 1px solid var(--border-color);
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.related-card {
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.related-thumb {
  height: 160px;
  background: var(--bg-tertiary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 0.875rem;
}

.related-info {
  padding: 16px;
}

.related-info h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.related-info p {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

/* ============================================
   分类页头部
   ============================================ */

.category-header {
  background: var(--bg-secondary);
  padding: 48px 0;
  text-align: center;
}

.category-header h1 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.category-header p {
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

.category-stats {
  display: flex;
  justify-content: center;
  gap: 32px;
  margin-top: 24px;
}

.category-stats span {
  font-size: 0.9375rem;
  color: var(--text-secondary);
}

.category-stats strong {
  color: var(--accent-color);
  font-size: 1.25rem;
}

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

.error-page {
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 80px 20px;
}

.error-code {
  font-size: 8rem;
  font-weight: 700;
  color: var(--accent-color);
  line-height: 1;
  margin-bottom: 16px;
}

.error-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 12px;
}

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

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

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

.error-actions .btn:hover {
  background: var(--accent-dark);
}

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

.footer {
  background: var(--accent-dark);
  color: #fff;
  padding: 48px 0 24px;
  margin-top: 64px;
}

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

.footer-brand h3 {
  font-size: 1.25rem;
  margin-bottom: 12px;
}

.footer-brand p {
  opacity: 0.8;
  font-size: 0.9375rem;
  line-height: 1.6;
}

.footer-links h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 16px;
}

.footer-links ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.9375rem;
}

.footer-links a:hover {
  color: #fff;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 24px;
  text-align: center;
  font-size: 0.875rem;
  opacity: 0.7;
}

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

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

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

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

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

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

  .nav {
    order: 3;
    width: 100%;
    gap: 16px;
    margin-top: 12px;
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .search-box {
    display: none;
  }

  .hero {
    padding: 60px 0;
  }

  .hero-title {
    font-size: 1.75rem;
  }

  .hero-desc {
    font-size: 1rem;
  }

  .hero-cta {
    flex-direction: column;
    width: 100%;
    padding: 0 20px;
  }

  .hero-cta .btn {
    justify-content: center;
  }

  .category-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .category-card {
    padding: 16px;
  }

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

  .content-thumb {
    width: 100%;
    height: 180px;
  }

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

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

  .article-title {
    font-size: 1.5rem;
  }

  .article-featured {
    height: 240px;
  }

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

  .error-code {
    font-size: 5rem;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

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

  .content-meta {
    flex-wrap: wrap;
    gap: 8px;
  }

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

  .pagination {
    flex-wrap: wrap;
  }
}