:root {
    --bg-color: #050505;
    --sidebar-bg: #0a0a0a;
    --card-bg: #111111;
    --border-color: #222222;
    --text-primary: #f0f0f0;
    --text-secondary: #a0a0a0;
    --accent-primary: #00ff9d;
    --accent-secondary: #00b8ff;
    --accent-glow: rgba(0, 255, 157, 0.15);
    --code-bg: #0f1210;
    --font-heading: 'Outfit', 'Inter', sans-serif;
    --font-body: 'Inter', sans-serif;
    --font-mono: 'Fira Code', monospace;
    --nav-width: 280px;
    --toc-width: 240px;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    color: var(--text-primary);
    margin-bottom: 1rem;
    font-weight: 600;
}

h1 {
    font-size: 3rem;
    letter-spacing: -0.02em;
    background: linear-gradient(to right, #fff, #aaa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

h2 {
    font-size: 2rem;
    margin-top: 3rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.5rem;
}

h3 {
    font-size: 1.5rem;
    margin-top: 2rem;
    color: var(--accent-primary);
}

p {
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

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

a:hover {
    color: var(--accent-secondary);
    text-shadow: 0 0 10px rgba(0, 184, 255, 0.3);
}

/* Layout */
.app-container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: var(--nav-width);
    background: var(--sidebar-bg);
    border-right: 1px solid var(--border-color);
    position: fixed;
    height: 100vh;
    padding: 2rem 1.5rem;
    overflow-y: auto;
    z-index: 100;
}

.logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 2rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-primary);
}

.logo span {
    color: var(--accent-primary);
}

.nav-group {
    margin-bottom: 2rem;
}

.nav-title {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-secondary);
    margin-bottom: 1rem;
    font-weight: 600;
}

.nav-item {
    display: block;
    padding: 0.5rem 0.75rem;
    margin-bottom: 0.25rem;
    border-radius: 6px;
    color: var(--text-secondary);
    font-size: 0.95rem;
    transition: all 0.2s;
}

.nav-item:hover,
.nav-item.active {
    background: rgba(255, 255, 255, 0.03);
    color: var(--accent-primary);
    transform: translateX(4px);
}

/* Main Content */
.main-content {
    margin-left: var(--nav-width);
    margin-right: var(--toc-width);
    padding: 4rem 5rem;
    flex: 1;
    max-width: 1200px;
}

/* Hero Section */
.hero {
    padding: 4rem 0 6rem;
    position: relative;
    overflow: hidden;
}

.hero::after {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
    filter: blur(60px);
    z-index: -1;
    opacity: 0.5;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin-bottom: 2rem;
}

.cta-group {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

.btn {
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-primary {
    background: var(--accent-primary);
    color: #000;
    box-shadow: 0 0 20px var(--accent-glow);
}

.btn-primary:hover {
    background: #00ffaa;
    box-shadow: 0 0 30px rgba(0, 255, 157, 0.4);
    transform: translateY(-2px);
    color: #000;
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    border-color: var(--text-primary);
    background: rgba(255, 255, 255, 0.1);
}

/* Code Blocks */
pre {
    background: var(--code-bg);
    padding: 1.5rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    overflow-x: auto;
    margin: 1.5rem 0;
    position: relative;
}

code {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: #e0e0e0;
}

.copy-btn {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    cursor: pointer;
    opacity: 0;
    transition: opacity 0.2s;
}

pre:hover .copy-btn {
    opacity: 1;
}

/* Syntax Highlighting */
/* Highlight.js will handle the inner coloring. We just ensure the container looks right. */
.hljs {
    background: transparent !important;
    /* Let our pre background show or match */
    padding: 0 !important;
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin: 3rem 0;
}

.feature-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 2rem;
    border-radius: 12px;
    transition: transform 0.2s, border-color 0.2s;
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-primary);
}

.feature-icon {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--accent-primary);
}

/* API Docs Styling */
.api-method {
    background: var(--card-bg);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    margin-bottom: 2rem;
    overflow: hidden;
}

.api-header {
    padding: 1rem 1.5rem;
    background: rgba(255, 255, 255, 0.02);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.api-signature {
    font-family: var(--font-mono);
    color: var(--accent-secondary);
    font-size: 0.95rem;
}

.api-body {
    padding: 1.5rem;
}

.param-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
}

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

.param-table th {
    color: var(--text-secondary);
    font-size: 0.85rem;
    text-transform: uppercase;
}

.param-name {
    font-family: var(--font-mono);
    color: var(--accent-primary);
}

.param-type {
    font-family: var(--font-mono);
    color: #bd93f9;
    font-size: 0.85rem;
}

/* Right Sidebar (TOC) */
.toc {
    width: var(--toc-width);
    position: fixed;
    right: 0;
    top: 0;
    height: 100vh;
    padding: 4rem 1.5rem;
    border-left: 1px solid var(--border-color);
    background: var(--bg-color);
    /* Matches body */
    overflow-y: auto;
}

.toc-title {
    font-size: 0.85rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
    letter-spacing: 0.05em;
}

.toc-link {
    display: block;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    padding-left: 1rem;
    border-left: 2px solid transparent;
}

.toc-link:hover,
.toc-link.active {
    color: var(--accent-primary);
    border-left-color: var(--accent-primary);
}

/* Mobile */
.menu-toggle {
    display: none;
}

@media (max-width: 1024px) {
    .toc {
        display: none;
    }

    .main-content {
        margin-right: 0;
        padding: 3rem;
    }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s;
        z-index: 1000;
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
        padding: 2rem 1.5rem;
    }

    .menu-toggle {
        display: block;
        position: fixed;
        bottom: 2rem;
        right: 2rem;
        background: var(--accent-primary);
        color: #000;
        width: 50px;
        height: 50px;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        box-shadow: 0 5px 20px rgba(0, 0, 0, 0.5);
        z-index: 1001;
        cursor: pointer;
    }
}