* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-sidebar: #f5f6f7;
    --bg-hover: #e9ecef;
    --text-primary: #2c3e50;
    --text-secondary: #6c757d;
    --text-muted: #adb5bd;
    --border-color: #e1e4e8;
    --accent-color: #3b82f6;
    --accent-hover: #2563eb;
    --header-height: 64px;
    --sidebar-width: 280px;
    --shadow: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 40px rgba(0,0,0,0.1);
}

[data-theme="dark"] {
    --bg-primary: #1a1a1a;
    --bg-secondary: #262626;
    --bg-sidebar: #202020;
    --bg-hover: #2a2a2a;
    --text-primary: #e4e4e7;
    --text-secondary: #a1a1aa;
    --text-muted: #71717a;
    --border-color: #3f3f46;
    --accent-color: #3b82f6;
    --accent-hover: #60a5fa;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

.gitbook-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
}

/* Header Styles */
.gitbook-header {
    height: var(--header-height);
    background-color: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    box-shadow: var(--shadow);
}

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

.sidebar-toggle {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 8px;
    border-radius: 6px;
    transition: all 0.2s;
}

.sidebar-toggle:hover {
    background-color: var(--bg-hover);
    color: var(--text-primary);
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo {
    font-size: 28px;
}

.brand h1 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.search-container {
    position: relative;
    display: flex;
    align-items: center;
}

.search-icon {
    position: absolute;
    left: 12px;
    color: var(--text-muted);
    pointer-events: none;
}

.search-input {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 8px 12px 8px 40px;
    width: 300px;
    font-size: 14px;
    color: var(--text-primary);
    transition: all 0.2s;
}

.search-input:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.language-toggle {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 8px 12px;
    border-radius: 6px;
    transition: all 0.2s;
    font-size: 14px;
    font-weight: 500;
}

.language-toggle:hover {
    background-color: var(--bg-hover);
    color: var(--text-primary);
}

.theme-toggle {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 8px;
    border-radius: 6px;
    transition: all 0.2s;
}

.theme-toggle:hover {
    background-color: var(--bg-hover);
    color: var(--text-primary);
}

/* Body Layout */
.gitbook-body {
    display: flex;
    height: calc(100vh - var(--header-height));
    margin-top: var(--header-height);
}

/* Sidebar Styles */
.gitbook-sidebar {
    width: var(--sidebar-width);
    background-color: var(--bg-sidebar);
    border-right: 1px solid var(--border-color);
    overflow-y: auto;
    transition: transform 0.3s ease;
    position: relative;
    display: flex;
    flex-direction: column;
}

.gitbook-sidebar.collapsed {
    transform: translateX(-100%);
    margin-left: calc(-1 * var(--sidebar-width));
}

.sidebar-content {
    flex: 1;
    padding: 24px 16px;
}

.nav-section {
    margin-bottom: 32px;
}

.nav-section-title {
    font-size: 11px;
    font-weight: 600;
    color: white;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 12px;
    padding: 0 12px;
    cursor: default;
    user-select: none;
}

.nav-list {
    list-style: none;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    margin-bottom: 2px;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
    color: var(--text-secondary);
    font-size: 14px;
}

.nav-item:hover {
    background-color: var(--bg-hover);
    color: var(--text-primary);
}

.nav-item.active {
    background-color: var(--accent-color);
    color: white;
}

.nav-icon {
    font-size: 16px;
    width: 20px;
    text-align: center;
}

.sidebar-footer {
    padding: 16px;
    border-top: 1px solid var(--border-color);
}

.powered-by {
    font-size: 12px;
    color: var(--text-muted);
    text-align: center;
}

/* Main Content Styles */
.gitbook-content {
    flex: 1;
    overflow-y: auto;
    background-color: var(--bg-primary);
    position: relative;
}

.content-wrapper {
    max-width: 800px;
    margin: 0 auto;
    padding: 48px 24px 120px;
}

/* Markdown Content Styles */
.content-wrapper h1 {
    font-size: 24px;
    font-weight: 600;
    margin-top: 32px;
    margin-bottom: 16px;
    color: var(--text-primary);
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border-color);
}

.content-wrapper h2 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 16px;
    margin-top: 0;
    color: var(--text-primary);
}

.content-wrapper h2:first-child {
    margin-top: 0;
}

.content-wrapper h3 {
    font-size: 20px;
    font-weight: 600;
    margin-top: 32px;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.content-wrapper p {
    margin-bottom: 16px;
    line-height: 1.7;
    color: var(--text-primary);
}

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

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

.content-wrapper code {
    background-color: var(--bg-secondary);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 14px;
}

.content-wrapper pre {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 16px;
    overflow-x: auto;
    margin-bottom: 16px;
}

.content-wrapper pre code {
    background: none;
    padding: 0;
}

.content-wrapper blockquote {
    border-left: 4px solid var(--accent-color);
    padding-left: 16px;
    margin-bottom: 16px;
    color: var(--text-secondary);
}

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

.content-wrapper a:hover {
    color: var(--accent-hover);
    text-decoration: underline;
}

/* Image Styles */
.content-wrapper img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 16px 0;
    box-shadow: var(--shadow);
    transition: transform 0.2s ease;
}

.content-wrapper img:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-lg);
}

/* Centered images */
.content-wrapper div[align="center"] {
    text-align: center;
    margin: 24px 0;
}

.content-wrapper div[align="center"] img {
    display: inline-block;
    margin: 8px 0;
}

.content-wrapper div[align="center"] p {
    margin: 8px 0;
    font-style: italic;
    color: var(--text-secondary);
    font-size: 14px;
}

/* Screenshot style */
.content-wrapper .screenshot {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 16px;
    margin: 24px 0;
    text-align: center;
}

.content-wrapper .screenshot img {
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    margin: 0;
}

/* Figure with caption */
.content-wrapper figure {
    margin: 24px 0;
    text-align: center;
}

.content-wrapper figure img {
    margin-bottom: 8px;
}

.content-wrapper figcaption {
    font-style: italic;
    color: var(--text-secondary);
    font-size: 14px;
}

.content-wrapper table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 16px;
    overflow-x: auto;
    display: block;
}

.content-wrapper table th {
    background-color: var(--bg-secondary);
    padding: 12px;
    text-align: left;
    font-weight: 600;
    border: 1px solid var(--border-color);
}

.content-wrapper table td {
    padding: 12px;
    border: 1px solid var(--border-color);
}

.content-wrapper table tr:nth-child(even) {
    background-color: var(--bg-secondary);
}

/* Page Navigation */
.page-navigation {
    position: fixed;
    bottom: 0;
    left: var(--sidebar-width);
    right: 0;
    background-color: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    padding: 16px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 50;
}

.gitbook-sidebar.collapsed ~ .gitbook-content .page-navigation {
    left: 0;
}

.nav-button {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-secondary);
    font-size: 14px;
    cursor: pointer;
    transition: all 0.2s;
}

.nav-button:hover {
    background-color: var(--bg-hover);
    color: var(--text-primary);
    border-color: var(--text-secondary);
}

.nav-button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Responsive Design */
@media (max-width: 768px) {
    .gitbook-sidebar {
        position: fixed;
        top: var(--header-height);
        left: 0;
        bottom: 0;
        z-index: 90;
        box-shadow: var(--shadow-lg);
    }
    
    .gitbook-sidebar.collapsed {
        transform: translateX(-100%);
    }
    
    .search-container {
        display: none;
    }
    
    .page-navigation {
        left: 0;
    }
    
    .content-wrapper {
        padding: 32px 16px 100px;
    }
    
    .content-wrapper h2:first-child {
        margin-top: 24px;
    }
}

/* Loading Animation */
.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 200px;
}

.loading::after {
    content: "";
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--text-muted);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}