:root {
    /* Cache bust: v3 */
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-tertiary: #21262d;
    --text-primary: #c9d1d9;
    --text-secondary: #8b949e;
    --accent-primary: #58a6ff;
    --accent-secondary: #79c0ff;
    --accent-success: #238636;
    --accent-warning: #f0883e;
    --accent-danger: #f85149;
    --border-color: #30363d;
    --code-bg: #1f2937;
    --nav-width: 280px;
}

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

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

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--nav-width);
    height: 100vh;
    background-color: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    overflow-y: auto;
    z-index: 1000;
    padding: 1rem 0;
}

.nav-container {
    padding: 0 1rem;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 1.1rem;
    padding: 0.5rem 0;
    margin-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.logo-icon {
    font-size: 1.5rem;
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
}

.nav-section {
    margin-bottom: 1.5rem;
}

.nav-section-title {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    padding: 0.5rem 0;
    margin-bottom: 0.25rem;
}

.nav-links a {
    display: block;
    padding: 0.4rem 0.75rem;
    color: var(--text-primary);
    text-decoration: none;
    font-size: 0.9rem;
    border-radius: 4px;
    transition: background-color 0.2s;
}

.nav-links a:hover {
    background-color: var(--bg-tertiary);
    color: var(--accent-primary);
}

/* Main Content */
.main-content {
    margin-left: var(--nav-width);
    padding: 2rem;
    height: 100vh;
    overflow-y: auto;
}

/* Hero Section */
.hero {
    text-align: center;
    padding: 3rem 1rem;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
    border-radius: 12px;
    margin-bottom: 2rem;
    border: 1px solid var(--border-color);
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-quote {
    font-style: italic;
    color: var(--text-secondary);
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.hero-description {
    font-size: 1.2rem;
    max-width: 800px;
    margin: 0 auto 2rem;
    color: var(--text-primary);
}

.hero-links {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.2s;
}

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

.btn-primary:hover {
    background-color: #2ea043;
}

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

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

/* Content */
.content {
    max-width: 900px;
    margin: 0 auto;
}

.content h2 {
    font-size: 1.75rem;
    margin-top: 2.5rem;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-color);
}

.content h3 {
    font-size: 1.4rem;
    margin-top: 2rem;
    margin-bottom: 0.75rem;
    color: var(--accent-secondary);
}

.content h4 {
    font-size: 1.1rem;
    margin-top: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.content p {
    margin-bottom: 1rem;
}

.content ul, .content ol {
    margin-bottom: 1rem;
    padding-left: 2rem;
}

.content li {
    margin-bottom: 0.5rem;
}

.content a {
    color: var(--accent-primary);
    text-decoration: none;
}

.content a:hover {
    text-decoration: underline;
}

.content code {
    background-color: var(--code-bg);
    padding: 0.2rem 0.4rem;
    border-radius: 3px;
    font-family: "SF Mono", Monaco, Consolas, monospace;
    font-size: 0.9em;
}

.content pre {
    background-color: var(--code-bg);
    padding: 1rem;
    border-radius: 6px;
    overflow-x: auto;
    margin-bottom: 1rem;
    border: 1px solid var(--border-color);
}

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

.diagram {
    background-color: var(--code-bg);
    padding: 1rem;
    border-radius: 6px;
    overflow-x: auto;
    margin: 1rem 0;
    border: 1px solid var(--border-color);
}

.diagram pre {
    background: none;
    border: none;
    margin: 0;
    padding: 0;
}

/* Features */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1rem;
    margin: 1.5rem 0;
}

.feature {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    background-color: var(--bg-secondary);
    border-radius: 6px;
    border: 1px solid var(--border-color);
}

.feature-icon {
    font-size: 1.5rem;
}

/* Doc Grid */
.doc-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1rem;
    margin: 1.5rem 0;
}

.doc-card {
    display: block;
    padding: 1.5rem;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    text-decoration: none;
    transition: all 0.2s;
}

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

.doc-card h3 {
    margin: 0 0 0.5rem 0;
    color: var(--accent-primary);
}

.doc-card p {
    margin: 0;
    color: var(--text-secondary);
}

/* Footer */
.footer {
    margin-left: var(--nav-width);
    padding: 2rem;
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    text-align: center;
}

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

.footer p {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.license {
    margin-top: 1rem;
    font-size: 0.9rem;
}

/* Tables */
table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    overflow: hidden;
}

th, td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

th {
    background-color: var(--bg-tertiary);
    font-weight: 600;
}

tr:hover {
    background-color: var(--bg-tertiary);
}

/* Blockquotes */
blockquote {
    border-left: 4px solid var(--accent-primary);
    padding-left: 1rem;
    margin: 1rem 0;
    color: var(--text-secondary);
    font-style: italic;
}

/* Overlay for mobile nav */
.overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 999;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    :root {
        --nav-width: 100%;
    }

    body {
        overflow: auto;
    }

    .navbar {
        width: 100%;
        height: auto;
        position: relative;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
        overflow-y: visible;
    }

    .nav-container {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 0.5rem 1rem;
    }

    .nav-logo {
        margin-bottom: 0;
        border-bottom: none;
    }

    .nav-toggle {
        display: block;
    }

    .nav-links {
        display: none;
        padding: 1rem;
        background-color: var(--bg-secondary);
        max-height: 70vh;
        overflow-y: auto;
    }

    .nav-links.active {
        display: block;
    }

    .main-content {
        margin-left: 0;
        padding: 1rem;
        height: auto;
        overflow-y: visible;
    }

    .footer {
        margin-left: 0;
    }

    .hero h1 {
        font-size: 2rem;
    }

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

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

/* Print styles */
@media print {
    .navbar, .footer, .nav-toggle, .overlay {
        display: none;
    }

    .main-content {
        margin-left: 0;
        padding: 0;
    }
}