/* ============================================
   汽车音响 - 汽车音响改装知识库
   风格: API文档风格 (docs-api)
   主色调: #00bcd4 (青色)
   ============================================ */

/* CSS 变量定义 */
:root {
  --accent-color: #00bcd4;
  --accent-dark: #0097a7;
  --accent-light: #b2ebf2;
  --bg-primary: #0d1117;
  --bg-secondary: #161b22;
  --bg-tertiary: #21262d;
  --text-primary: #e6edf3;
  --text-secondary: #7d8590;
  --text-muted: #484f58;
  --border-color: #30363d;
  --success-color: #238636;
  --warning-color: #d29922;
  --error-color: #da3633;
  --method-get: #238636;
  --method-post: #8957e5;
  --method-put: #d29922;
  --method-delete: #da3633;
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.4);
  --max-width: 1200px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans', Helvetica, Arial, sans-serif;
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  min-height: 100vh;
}

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

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

ul {
  list-style: none;
}

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

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
}

.logo-icon {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--accent-color), var(--accent-dark));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
}

.nav {
  display: flex;
  gap: 8px;
}

.nav a {
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
}

.nav a:hover,
.nav a.active {
  color: var(--text-primary);
  background-color: var(--bg-tertiary);
}

.search-box {
  position: relative;
}

.search-box input {
  width: 240px;
  padding: 8px 12px 8px 36px;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 14px;
}

.search-box input::placeholder {
  color: var(--text-muted);
}

.search-box::before {
  content: "🔍";
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 12px;
}

/* ============================================
   面包屑导航
   ============================================ */
.breadcrumb {
  background-color: var(--bg-primary);
  border-bottom: 1px solid var(--border-color);
  padding: 12px 0;
}

.breadcrumb-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-secondary);
}

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

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

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

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

/* ============================================
   Hero Section
   ============================================ */
.hero {
  background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
  border-bottom: 1px solid var(--border-color);
  padding: 64px 24px;
  text-align: center;
}

.hero-title {
  font-size: 48px;
  font-weight: 700;
  margin-bottom: 16px;
  background: linear-gradient(90deg, var(--accent-color), var(--accent-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 20px;
  color: var(--text-secondary);
  margin-bottom: 32px;
}

.hero-meta {
  display: flex;
  justify-content: center;
  gap: 24px;
  font-size: 14px;
  color: var(--text-secondary);
}

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

/* ============================================
   Quick Start / 快速开始
   ============================================ */
.quick-start {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 48px 24px;
}

.section-title {
  font-size: 24px;
  font-weight: 600;
  margin-bottom: 24px;
  color: var(--text-primary);
}

.code-block {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.code-header {
  background-color: var(--bg-tertiary);
  padding: 12px 16px;
  font-size: 12px;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 8px;
}

.code-content {
  padding: 16px;
  font-family: 'SF Mono', Monaco, Inconsolata, 'Fira Code', monospace;
  font-size: 13px;
  line-height: 1.8;
  color: var(--text-primary);
  overflow-x: auto;
}

.code-content .comment {
  color: var(--text-secondary);
}

.code-content .keyword {
  color: var(--accent-color);
}

.code-content .string {
  color: #a5d6ff;
}

/* ============================================
   API Endpoints / 内容分类
   ============================================ */
.endpoints-section {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px 48px;
}

.endpoints-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
}

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

.endpoint-card:hover {
  border-color: var(--accent-color);
  transform: translateY(-2px);
}

.endpoint-card h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.endpoint-card p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.endpoint-card .count {
  display: inline-block;
  margin-top: 12px;
  padding: 4px 10px;
  background-color: var(--bg-tertiary);
  border-radius: 12px;
  font-size: 12px;
  color: var(--accent-color);
}

/* ============================================
   Common Endpoints / 内容列表
   ============================================ */
.content-section {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px 48px;
}

.endpoint-list {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.endpoint-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-color);
  transition: background-color 0.2s;
}

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

.endpoint-item:hover {
  background-color: var(--bg-tertiary);
}

.method {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 64px;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
}

.method.get {
  background-color: rgba(35, 134, 54, 0.2);
  color: #3fb950;
}

.method.post {
  background-color: rgba(137, 87, 229, 0.2);
  color: #a371f7;
}

.method.put {
  background-color: rgba(210, 153, 34, 0.2);
  color: #d29922;
}

.method.delete {
  background-color: rgba(218, 54, 51, 0.2);
  color: #f85149;
}

.endpoint-info {
  flex: 1;
}

.endpoint-path {
  font-family: 'SF Mono', Monaco, monospace;
  font-size: 14px;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.endpoint-desc {
  font-size: 13px;
  color: var(--text-secondary);
}

.endpoint-status {
  display: flex;
  gap: 8px;
}

.status-code {
  padding: 2px 6px;
  background-color: var(--bg-tertiary);
  border-radius: 4px;
  font-size: 11px;
  color: var(--text-secondary);
}

/* ============================================
   文章列表
   ============================================ */
.articles-section {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 48px 24px;
  border-top: 1px solid var(--border-color);
}

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

.article-column h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

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

.article-item {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.5;
}

.article-item::before {
  content: "•";
  color: var(--accent-color);
  font-weight: bold;
}

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

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

/* ============================================
   分类页样式
   ============================================ */
.category-header {
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  padding: 48px 24px;
}

.category-header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

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

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

.category-content {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 48px 24px;
}

/* ============================================
   文章详情页样式
   ============================================ */
.article-header {
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  padding: 48px 24px;
}

.article-header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.article-title {
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.article-meta {
  display: flex;
  gap: 24px;
  font-size: 14px;
  color: var(--text-secondary);
}

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

.article-body {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 48px 24px;
}

.article-section {
  margin-bottom: 48px;
}

.article-section h2 {
  font-size: 24px;
  font-weight: 600;
  margin-bottom: 20px;
  color: var(--text-primary);
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-color);
}

.article-section h3 {
  font-size: 18px;
  font-weight: 600;
  margin: 24px 0 12px;
  color: var(--text-primary);
}

.article-section p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.params-table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
}

.params-table th,
.params-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.params-table th {
  background-color: var(--bg-tertiary);
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
}

.params-table td {
  font-size: 14px;
  color: var(--text-primary);
}

.params-table .param-name {
  font-family: 'SF Mono', Monaco, monospace;
  color: var(--accent-color);
}

.params-table .param-type {
  color: var(--text-secondary);
  font-size: 12px;
}

.params-table .param-required {
  color: #f85149;
  font-size: 12px;
}

.params-table .param-optional {
  color: var(--text-muted);
  font-size: 12px;
}

/* ============================================
   响应式预览
   ============================================ */
.response-preview {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin: 20px 0;
}

.response-header {
  background-color: var(--bg-tertiary);
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid var(--border-color);
}

.response-status {
  padding: 4px 10px;
  background-color: var(--success-color);
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 600;
  color: #fff;
}

.response-title {
  font-size: 13px;
  color: var(--text-secondary);
}

.response-body {
  padding: 16px;
  font-family: 'SF Mono', Monaco, monospace;
  font-size: 13px;
  line-height: 1.8;
  color: var(--text-primary);
  overflow-x: auto;
}

.response-body .key {
  color: #7ee787;
}

.response-body .string {
  color: #a5d6ff;
}

.response-body .number {
  color: #79c0ff;
}

.response-body .boolean {
  color: #ff7b72;
}

/* ============================================
   错误响应
   ============================================ */
.error-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.error-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
}

.error-code {
  padding: 4px 10px;
  background-color: var(--error-color);
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 600;
  color: #fff;
}

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

/* ============================================
   404 页面
   ============================================ */
.error-404 {
  min-height: calc(100vh - 64px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 48px 24px;
}

.error-code-large {
  font-size: 120px;
  font-weight: 700;
  line-height: 1;
  background: linear-gradient(135deg, var(--accent-color), var(--accent-dark));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 24px;
}

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

.error-desc {
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: 32px;
  max-width: 400px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  background-color: var(--accent-color);
  color: #fff;
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 500;
  transition: background-color 0.2s;
}

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

/* ============================================
   Footer 页脚
   ============================================ */
.footer {
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 48px 24px;
  margin-top: auto;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
}

.footer-brand p {
  font-size: 14px;
  color: var(--text-secondary);
  margin-top: 16px;
  line-height: 1.6;
}

.footer-column h4 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--text-primary);
}

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

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

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

.footer-bottom {
  max-width: var(--max-width);
  margin: 48px auto 0;
  padding-top: 24px;
  border-top: 1px solid var(--border-color);
  text-align: center;
  font-size: 13px;
  color: var(--text-muted);
}

/* ============================================
   响应式设计
   ============================================ */
@media (max-width: 1024px) {
  .articles-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

@media (max-width: 768px) {
  .header-inner {
    padding: 0 16px;
  }

  .nav {
    display: none;
  }

  .search-box input {
    width: 160px;
  }

  .hero {
    padding: 48px 16px;
  }

  .hero-title {
    font-size: 32px;
  }

  .hero-subtitle {
    font-size: 16px;
  }

  .hero-meta {
    flex-direction: column;
    gap: 8px;
  }

  .quick-start,
  .endpoints-section,
  .content-section,
  .articles-section,
  .category-content,
  .article-body {
    padding-left: 16px;
    padding-right: 16px;
  }

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

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

  .endpoint-status {
    flex-wrap: wrap;
  }

  .article-title,
  .category-title {
    font-size: 28px;
  }

  .article-meta {
    flex-direction: column;
    gap: 8px;
  }

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

  .params-table {
    font-size: 12px;
  }

  .params-table th,
  .params-table td {
    padding: 8px 12px;
  }
}

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

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

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