/* ========================================
   手工刀具 - 资源导航风格样式表
   www.dingzhidao.cn
   ======================================== */

/* CSS 变量 */
:root {
  --accent-color: #2196f3;
  --accent-dark: #1976d2;
  --accent-light: #64b5f6;
  --text-primary: #333;
  --text-secondary: #666;
  --text-muted: #999;
  --bg-primary: #fff;
  --bg-secondary: #f5f7fa;
  --bg-card: #fff;
  --border-color: #e8e8e8;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.1);
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --max-width: 1200px;
  --header-height: 64px;
}

/* 重置样式 */
* {
  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-color: var(--bg-secondary);
}

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

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

ul {
  list-style: none;
}

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

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

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

/* Header */
.header {
  background: var(--bg-primary);
  box-shadow: var(--shadow-sm);
  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-sm);
  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;
}

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

/* Main */
.main {
  min-height: calc(100vh - var(--header-height) - 200px);
  padding: 40px 0;
}

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

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

.footer-brand p {
  color: var(--text-secondary);
  margin-top: 10px;
  line-height: 1.8;
}

.footer-title {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 15px;
  color: var(--text-primary);
}

.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;
  text-align: center;
  color: var(--text-muted);
  font-size: 13px;
}

/* ========================================
   首页组件
   ======================================== */

/* Hero Section */
.hero {
  text-align: center;
  padding: 60px 0 40px;
}

.hero-title {
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 15px;
  color: var(--text-primary);
}

.hero-desc {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 30px;
}

/* Search Box */
.search-box {
  max-width: 600px;
  margin: 0 auto 40px;
  position: relative;
}

.search-input {
  width: 100%;
  padding: 16px 50px 16px 20px;
  font-size: 16px;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-lg);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.search-input:focus {
  border-color: var(--accent-color);
  box-shadow: 0 0 0 3px rgba(33, 150, 243, 0.1);
}

.search-btn {
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  width: 40px;
  height: 40px;
  background: var(--accent-color);
  border: none;
  border-radius: var(--radius-md);
  color: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s;
}

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

/* Category Filter */
.category-filter {
  margin-bottom: 40px;
}

.filter-title {
  text-align: center;
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 20px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.filter-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}

.filter-tag {
  padding: 10px 20px;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 30px;
  color: var(--text-secondary);
  font-size: 14px;
  cursor: pointer;
  transition: all 0.2s;
}

.filter-tag:hover,
.filter-tag.active {
  background: var(--accent-color);
  border-color: var(--accent-color);
  color: #fff;
}

/* Featured Links */
.featured-section {
  margin-bottom: 50px;
}

.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;
}

/* Link Card */
.link-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.link-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  transition: box-shadow 0.2s, transform 0.2s;
}

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

.link-icon {
  width: 48px;
  height: 48px;
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}

.link-content {
  flex: 1;
  min-width: 0;
}

.link-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text-primary);
}

.link-url {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.link-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.link-meta {
  display: flex;
  align-items: center;
  gap: 15px;
  margin-top: 10px;
  font-size: 12px;
  color: var(--text-muted);
}

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

.verified {
  color: #4caf50;
}

.rating {
  color: #ffc107;
}

/* Statistics */
.stats-bar {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px;
  display: flex;
  justify-content: center;
  gap: 60px;
  margin-bottom: 50px;
}

.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-secondary);
  margin-top: 4px;
}

/* Article Grid */
.article-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

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

.column-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 15px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--accent-color);
}

.article-list li {
  padding: 12px 0;
  border-bottom: 1px solid var(--border-color);
}

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

.article-list a {
  color: var(--text-primary);
  font-size: 14px;
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

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

/* ========================================
   分类页组件
   ======================================== */

/* Breadcrumb */
.breadcrumb {
  padding: 20px 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;
}

/* Category Header */
.category-header {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 30px;
  margin-bottom: 30px;
}

.category-title {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 8px;
}

.category-count {
  color: var(--text-secondary);
  font-size: 14px;
}

/* Sub Categories */
.sub-categories {
  margin-bottom: 30px;
}

.sub-categories-title {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 15px;
}

.sub-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.sub-tag {
  padding: 8px 16px;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 13px;
  transition: all 0.2s;
}

.sub-tag:hover {
  border-color: var(--accent-color);
  color: var(--accent-color);
}

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

.page-btn,
.page-num {
  min-width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-color);
  background: var(--bg-primary);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 14px;
  cursor: pointer;
  transition: all 0.2s;
}

.page-btn:hover,
.page-num:hover {
  border-color: var(--accent-color);
  color: var(--accent-color);
}

.page-num.active {
  background: var(--accent-color);
  border-color: var(--accent-color);
  color: #fff;
}

.page-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ========================================
   文章页组件
   ======================================== */

/* Article Detail */
.article-detail {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 40px;
}

.article-header {
  margin-bottom: 30px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-color);
}

.article-title {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 15px;
}

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

.article-meta span {
  display: flex;
  align-items: center;
  gap: 5px;
}

.article-content {
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-primary);
}

.article-content h2 {
  font-size: 24px;
  font-weight: 600;
  margin: 40px 0 20px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-color);
}

.article-content h3 {
  font-size: 20px;
  font-weight: 600;
  margin: 30px 0 15px;
}

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

.article-content ul,
.article-content ol {
  margin-bottom: 20px;
  padding-left: 25px;
}

.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-md);
  margin: 20px 0;
}

/* Link Info Card */
.link-info-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 25px;
  margin: 30px 0;
}

.link-info-header {
  display: flex;
  align-items: center;
  gap: 15px;
  margin-bottom: 20px;
}

.link-info-icon {
  width: 56px;
  height: 56px;
  background: var(--bg-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
}

.link-info-title {
  font-size: 18px;
  font-weight: 600;
}

.link-info-url {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 4px;
}

.link-info-actions {
  display: flex;
  gap: 10px;
}

.btn {
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  border: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

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

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

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

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

/* Detail List */
.detail-list {
  margin: 20px 0;
}

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

.detail-item: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;
}

/* Tags */
.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 20px 0;
}

.tag {
  padding: 6px 12px;
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
  font-size: 13px;
  color: var(--text-secondary);
}

/* Related Links */
.related-section {
  margin-top: 40px;
  padding-top: 30px;
  border-top: 1px solid var(--border-color);
}

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

.related-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px;
  transition: box-shadow 0.2s;
}

.related-card:hover {
  box-shadow: var(--shadow-sm);
}

.related-card-title {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 8px;
}

.related-card-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ========================================
   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: 28px;
  font-weight: 600;
  margin-bottom: 15px;
}

.error-desc {
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: 30px;
}

.error-actions {
  display: flex;
  justify-content: center;
  gap: 15px;
}

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

@media (max-width: 992px) {
  .footer-content {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

@media (max-width: 768px) {
  .header .container {
    flex-wrap: wrap;
    height: auto;
    padding: 15px 20px;
  }

  .nav {
    width: 100%;
    justify-content: center;
    margin-top: 15px;
    gap: 20px;
  }

  .hero-title {
    font-size: 28px;
  }

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

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

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

  .article-detail {
    padding: 25px;
  }

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

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

  .link-card {
    flex-direction: column;
  }

  .filter-tags {
    gap: 8px;
  }

  .filter-tag {
    padding: 8px 14px;
    font-size: 13px;
  }

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

@media (max-width: 480px) {
  .hero-title {
    font-size: 24px;
  }

  .hero-desc {
    font-size: 14px;
  }

  .category-title {
    font-size: 22px;
  }

  .article-content {
    font-size: 15px;
  }

  .article-content h2 {
    font-size: 20px;
  }

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