/* ========================================
   手工定制鞋 - 规章风格样式表
   www.jixianpaishi.cn
   ======================================== */

/* CSS 变量定义 */
:root {
  --accent-color: #455a64;
  --accent-light: #607d8b;
  --accent-dark: #37474f;
  --text-primary: #212121;
  --text-secondary: #616161;
  --text-muted: #9e9e9e;
  --bg-primary: #ffffff;
  --bg-secondary: #f5f5f5;
  --bg-tertiary: #eeeeee;
  --border-color: #e0e0e0;
  --border-dark: #bdbdbd;
  --success-color: #4caf50;
  --warning-color: #ff9800;
  --error-color: #f44336;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
  --shadow-md: 0 2px 8px rgba(0,0,0,0.12);
  --shadow-lg: 0 4px 16px rgba(0,0,0,0.15);
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --max-width: 1200px;
  --header-height: 64px;
}

/* 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-color: var(--bg-primary);
}

a {
  color: var(--accent-color);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

ul, ol {
  list-style: none;
}

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

/* ========================================
   布局容器
   ======================================== */

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 48px 0;
}

.section-title {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--accent-color);
}

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

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

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

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--accent-color);
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: var(--accent-color);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.5rem;
}

.nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-link {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 8px 0;
  border-bottom: 2px solid transparent;
  transition: all 0.2s ease;
}

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

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

.search-input {
  width: 200px;
  padding: 8px 12px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  transition: border-color 0.2s ease;
}

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

.search-btn {
  padding: 8px 16px;
  background: var(--accent-color);
  color: white;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  cursor: pointer;
  transition: background 0.2s ease;
}

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

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

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

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

.hero-subtitle {
  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;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  font-size: 0.9375rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  border: none;
}

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

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

.btn-secondary {
  background: transparent;
  color: white;
  border: 1px solid rgba(255,255,255,0.5);
}

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

/* ========================================
   分类卡片
   ======================================== */

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

.category-card {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
  text-align: center;
  transition: all 0.2s ease;
}

.category-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--accent-color);
  transform: translateY(-2px);
}

.category-icon {
  width: 56px;
  height: 56px;
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-size: 1.75rem;
}

.category-card:hover .category-icon {
  background: var(--accent-color);
  color: white;
}

.category-name {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

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

/* ========================================
   特色内容
   ======================================== */

.featured-section {
  background: var(--bg-secondary);
}

.featured-card {
  background: var(--bg-primary);
  border-radius: var(--radius-md);
  padding: 32px;
  box-shadow: var(--shadow-sm);
}

.featured-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 20px;
}

.featured-label {
  display: inline-block;
  padding: 4px 12px;
  background: var(--accent-color);
  color: white;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-radius: var(--radius-sm);
}

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

.featured-title {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.featured-desc {
  color: var(--text-secondary);
  margin-bottom: 20px;
  line-height: 1.7;
}

.featured-meta {
  display: flex;
  align-items: center;
  gap: 24px;
  font-size: 0.875rem;
  color: var(--text-muted);
}

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

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

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

.content-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 20px;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: all 0.2s ease;
}

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

.content-number {
  width: 40px;
  height: 40px;
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  color: var(--accent-color);
  flex-shrink: 0;
}

.content-body {
  flex: 1;
}

.content-title {
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
}

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

.content-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.content-category {
  color: var(--accent-color);
  font-weight: 500;
}

/* ========================================
   三栏布局
   ======================================== */

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

.column-box {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px;
}

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

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

.column-list li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9375rem;
}

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

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

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

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

.breadcrumb {
  background: var(--bg-secondary);
  padding: 16px 0;
  border-bottom: 1px solid var(--border-color);
}

.breadcrumb-list {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  color: var(--text-muted);
}

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

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

.breadcrumb-separator {
  color: var(--text-muted);
}

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

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

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

.category-header-title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}

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

/* ========================================
   筛选标签
   ======================================== */

.filter-tabs {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-color);
}

.filter-tab {
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--bg-secondary);
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
}

.filter-tab:hover {
  background: var(--bg-tertiary);
}

.filter-tab.active {
  background: var(--accent-color);
  color: white;
}

/* ========================================
   文章卡片
   ======================================== */

.article-card {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
  margin-bottom: 16px;
  transition: all 0.2s ease;
}

.article-card:hover {
  box-shadow: var(--shadow-md);
}

.article-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 12px;
}

.article-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
}

.article-status {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 500;
}

.status-active {
  background: #e8f5e9;
  color: var(--success-color);
}

.status-proposed {
  background: #fff3e0;
  color: var(--warning-color);
}

.status-archived {
  background: #f5f5f5;
  color: var(--text-muted);
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.article-summary {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.7;
  margin-bottom: 16px;
}

.article-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--accent-color);
}

.article-link:hover {
  gap: 10px;
}

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

.article-detail {
  max-width: 800px;
  margin: 0 auto;
}

.article-detail-header {
  text-align: center;
  padding: 48px 0;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 32px;
}

.article-detail-title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
  line-height: 1.3;
}

.article-detail-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  font-size: 0.875rem;
  color: var(--text-muted);
}

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

.article-content {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--text-primary);
}

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

.article-content h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 32px 0 16px;
}

.article-content p {
  margin-bottom: 16px;
}

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

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

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

.article-section {
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  padding: 24px;
  margin: 24px 0;
}

.article-section-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 16px;
}

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

.requirement-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px;
  background: var(--bg-primary);
  border-radius: var(--radius-sm);
}

.requirement-num {
  width: 28px;
  height: 28px;
  background: var(--accent-color);
  color: white;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.875rem;
  font-weight: 600;
  flex-shrink: 0;
}

.requirement-text {
  flex: 1;
  color: var(--text-secondary);
}

.resource-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--border-color);
}

.resource-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all 0.2s ease;
}

.resource-link:hover {
  background: var(--accent-color);
  border-color: var(--accent-color);
  color: white;
}

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

.error-page {
  min-height: calc(100vh - var(--header-height) - 300px);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 48px 24px;
}

.error-content {
  max-width: 480px;
}

.error-code {
  font-size: 6rem;
  font-weight: 700;
  color: var(--accent-color);
  line-height: 1;
  margin-bottom: 16px;
}

.error-title {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.error-desc {
  color: var(--text-secondary);
  margin-bottom: 24px;
}

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

.btn-outline {
  background: transparent;
  color: var(--accent-color);
  border: 1px solid var(--accent-color);
}

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

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

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

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 32px;
}

.footer-brand {
  max-width: 300px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 16px;
}

.footer-desc {
  font-size: 0.875rem;
  opacity: 0.8;
  line-height: 1.7;
}

.footer-title {
  font-size: 0.9375rem;
  font-weight: 600;
  margin-bottom: 16px;
}

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

.footer-links a {
  font-size: 0.875rem;
  opacity: 0.8;
  transition: opacity 0.2s ease;
}

.footer-links a:hover {
  opacity: 1;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8125rem;
  opacity: 0.7;
}

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

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

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

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

@media (max-width: 768px) {
  :root {
    --header-height: 56px;
  }

  .header-inner {
    flex-wrap: wrap;
    height: auto;
    padding: 12px 0;
    gap: 12px;
  }

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

  .nav-link {
    white-space: nowrap;
    font-size: 0.875rem;
  }

  .search-box {
    order: 2;
  }

  .search-input {
    width: 140px;
  }

  .hero {
    padding: 48px 0;
  }

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

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

  .hero-cta {
    flex-direction: column;
    width: 100%;
    padding: 0 24px;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }

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

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

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

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

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

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

  .error-code {
    font-size: 4rem;
  }

  .error-actions {
    flex-direction: column;
  }
}

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

  .section {
    padding: 32px 0;
  }

  .section-title {
    font-size: 1.25rem;
  }

  .content-item {
    flex-direction: column;
    gap: 12px;
  }

  .content-number {
    width: 32px;
    height: 32px;
    font-size: 0.875rem;
  }

  .filter-tabs {
    overflow-x: auto;
    padding-bottom: 8px;
  }

  .filter-tab {
    white-space: nowrap;
  }

  .article-header {
    flex-direction: column;
    gap: 12px;
  }
}