/* ============================================
   专业 API 文档中心 - 左右布局设计
   ============================================ */

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

:root {
    /* 主色调 */
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --primary-light: #eff6ff;
    
    /* 文字颜色 */
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    
    /* 背景色 */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    
    /* 边框 */
    --border-color: #e2e8f0;
    --border-light: #f1f5f9;
    
    /* 阴影 */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    
    /* 布局 */
    --sidebar-width: 300px;
    --header-height: 64px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-secondary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   顶部导航栏
   ============================================ */
.top-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    padding: 0 24px;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
}

.top-header .logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--text-primary);
}

.top-header .logo-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--primary-color), #7c3aed);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 18px;
}

.top-header .logo-text {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
}

.top-header .logo-badge {
    background: var(--primary-light);
    color: var(--primary-color);
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
}

.header-actions {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 16px;
}

.header-search {
    position: relative;
}

.header-search input {
    width: 300px;
    padding: 8px 16px 8px 40px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 14px;
    background: var(--bg-secondary);
    transition: all 0.2s;
}

.header-search input:focus {
    outline: none;
    border-color: var(--primary-color);
    background: var(--bg-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.header-search .search-icon {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
}

.header-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    padding: 8px 16px;
    border-radius: 6px;
    transition: all 0.2s;
}

.header-link:hover {
    color: var(--primary-color);
    background: var(--primary-light);
}

/* ============================================
   侧边栏导航
   ============================================ */
.sidebar {
    position: fixed;
    top: var(--header-height);
    left: 0;
    bottom: 0;
    width: var(--sidebar-width);
    background: var(--bg-primary);
    border-right: 1px solid var(--border-color);
    overflow-y: auto;
    padding: 20px 0;
    z-index: 900;
}

.sidebar::-webkit-scrollbar {
    width: 6px;
}

.sidebar::-webkit-scrollbar-track {
    background: transparent;
}

.sidebar::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

.sidebar::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

.nav-category {
    margin-bottom: 8px;
}

.nav-category-title {
    padding: 8px 20px;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
}

.nav-item {
    display: block;
    padding: 8px 20px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    transition: all 0.15s;
    border-left: 3px solid transparent;
}

.nav-item:hover {
    color: var(--primary-color);
    background: var(--primary-light);
    border-left-color: var(--primary-color);
    text-decoration: none;
}

.nav-item.active {
    color: var(--primary-color);
    background: var(--primary-light);
    border-left-color: var(--primary-color);
    font-weight: 600;
}

.nav-item .nav-icon {
    margin-right: 8px;
    font-size: 14px;
}

/* ============================================
   主内容区域
   ============================================ */
.main-content {
    margin-left: var(--sidebar-width);
    margin-top: var(--header-height);
    padding: 32px 48px;
    min-height: calc(100vh - var(--header-height));
}

.content-wrapper {
    max-width: 900px;
    margin: 0 auto;
}

/* ============================================
   文档列表页面样式
   ============================================ */
.page-title {
    margin-bottom: 32px;
}

.page-title h1 {
    font-size: 32px;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.page-title .subtitle {
    font-size: 16px;
    color: var(--text-secondary);
}

.doc-categories {
    display: grid;
    gap: 24px;
}

.doc-category {
    background: var(--bg-primary);
    border-radius: 12px;
    padding: 24px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

.doc-category-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-light);
}

.doc-category-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
}

.doc-category-icon.getting-started {
    background: linear-gradient(135deg, #10b981, #059669);
    color: white;
}

.doc-category-icon.openai {
    background: linear-gradient(135deg, #2563eb, #1d4ed8);
    color: white;
}

.doc-category-icon.gemini {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: white;
}

.doc-category-icon.claude {
    background: linear-gradient(135deg, #8b5cf6, #7c3aed);
    color: white;
}

.doc-category-icon.image {
    background: linear-gradient(135deg, #ec4899, #db2777);
    color: white;
}

.doc-category-icon.kling {
    background: linear-gradient(135deg, #06b6d4, #0891b2);
    color: white;
}

.doc-category-icon.audio {
    background: linear-gradient(135deg, #84cc16, #65a30d);
    color: white;
}

.doc-category-icon.rag {
    background: linear-gradient(135deg, #f97316, #ea580c);
    color: white;
}

.doc-category-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
}

.doc-category-count {
    margin-left: auto;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    padding: 4px 12px;
    border-radius: 16px;
    font-size: 12px;
    font-weight: 600;
}

.doc-list {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 12px;
}

.doc-list li {
    margin: 0;
}

.doc-list a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    background: var(--bg-secondary);
    border-radius: 8px;
    color: var(--text-primary);
    text-decoration: none;
    font-size: 14px;
    transition: all 0.2s;
    border: 1px solid transparent;
}

.doc-list a:hover {
    background: var(--primary-light);
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.doc-list a .doc-number {
    background: var(--bg-tertiary);
    color: var(--text-muted);
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
    min-width: 28px;
    text-align: center;
}

.doc-list a:hover .doc-number {
    background: var(--primary-color);
    color: white;
}

/* ============================================
   文档内容页样式
   ============================================ */
.doc-content {
    background: var(--bg-primary);
    border-radius: 12px;
    padding: 40px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

.doc-content h1 {
    font-size: 2em;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 2px solid var(--border-color);
}

.doc-content h2 {
    font-size: 1.5em;
    font-weight: 700;
    color: var(--text-primary);
    margin-top: 32px;
    margin-bottom: 16px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border-light);
}

.doc-content h3 {
    font-size: 1.25em;
    font-weight: 600;
    color: var(--text-primary);
    margin-top: 24px;
    margin-bottom: 12px;
}

.doc-content h4 {
    font-size: 1.1em;
    font-weight: 600;
    color: var(--text-primary);
    margin-top: 20px;
    margin-bottom: 8px;
}

.doc-content p {
    margin-bottom: 16px;
    color: var(--text-primary);
    line-height: 1.8;
}

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

.doc-content li {
    margin-bottom: 8px;
    line-height: 1.7;
}

.doc-content code {
    padding: 2px 6px;
    font-size: 0.9em;
    background: var(--bg-tertiary);
    border-radius: 4px;
    font-family: "SF Mono", "Fira Code", "Consolas", monospace;
    color: #d63384;
}

.doc-content pre {
    padding: 16px;
    overflow: auto;
    font-size: 0.9em;
    line-height: 1.6;
    background: #1e293b;
    border-radius: 8px;
    margin-bottom: 20px;
}

.doc-content pre code {
    padding: 0;
    margin: 0;
    font-size: 100%;
    background-color: transparent;
    color: #e2e8f0;
}

.doc-content blockquote {
    padding: 16px 20px;
    margin: 20px 0;
    background: var(--primary-light);
    border-left: 4px solid var(--primary-color);
    border-radius: 0 8px 8px 0;
    color: var(--text-primary);
}

.doc-content blockquote p {
    margin-bottom: 0;
}

.doc-content table {
    border-collapse: collapse;
    width: 100%;
    margin-bottom: 20px;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

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

.doc-content table th {
    font-weight: 600;
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.doc-content table tr:nth-child(2n) {
    background: var(--bg-secondary);
}

.doc-content a {
    color: var(--primary-color);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: all 0.2s;
}

.doc-content a:hover {
    border-bottom-color: var(--primary-color);
}

.doc-content img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 16px 0;
    box-shadow: var(--shadow-md);
}

.doc-content hr {
    height: 1px;
    padding: 0;
    margin: 32px 0;
    background-color: var(--border-color);
    border: 0;
}

/* 面包屑导航 */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 24px;
    font-size: 14px;
}

.breadcrumb a {
    color: var(--text-secondary);
    text-decoration: none;
}

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

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

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

/* ============================================
   响应式设计
   ============================================ */
@media (max-width: 1024px) {
    .sidebar {
        width: 260px;
    }
    
    .main-content {
        margin-left: 260px;
        padding: 24px 32px;
    }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s;
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
        padding: 20px;
    }
    
    .header-search input {
        width: 200px;
    }
    
    .doc-list {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   暗色模式
   ============================================ */
@media (prefers-color-scheme: dark) {
    :root {
        --text-primary: #f1f5f9;
        --text-secondary: #94a3b8;
        --text-muted: #64748b;
        --bg-primary: #0f172a;
        --bg-secondary: #1e293b;
        --bg-tertiary: #334155;
        --border-color: #334155;
        --border-light: #1e293b;
        --primary-light: #1e3a5f;
    }
    
    .top-header {
        background: var(--bg-primary);
        border-bottom-color: var(--border-color);
    }
    
    .sidebar {
        background: var(--bg-primary);
        border-right-color: var(--border-color);
    }
    
    .header-search input {
        background: var(--bg-secondary);
        border-color: var(--border-color);
        color: var(--text-primary);
    }
    
    .doc-content {
        background: var(--bg-primary);
        border-color: var(--border-color);
    }
    
    .doc-content code {
        background: var(--bg-tertiary);
        color: #f472b6;
    }
    
    .doc-content pre {
        background: #0d1117;
    }
    
    .doc-content blockquote {
        background: var(--bg-secondary);
    }
    
    .doc-list a {
        background: var(--bg-secondary);
    }
    
    .doc-list a:hover {
        background: var(--primary-light);
    }
}