:root {
    --bg-primary: #0A0F1D;
    --bg-secondary: #111827;
    --text-primary: #F9FAFB;
    --text-secondary: #9CA3AF;
    --accent: #06B6D4;
    --border: #1F2937;
    --header-height: 64px;
}

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

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

header {
    height: var(--header-height);
    background-color: rgba(10, 15, 29, 0.8);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 2rem;
}

.logo {
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--text-primary);
    text-decoration: none;
    display: flex;
    align-items: center;
}

.logo span {
    color: var(--accent);
    margin-right: 0.5rem;
}

nav {
    display: flex;
    gap: 1.5rem;
    align-items: center;
}

nav a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    transition: color 0.2s;
}

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

.btn-primary {
    background-color: var(--accent);
    color: #000;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    font-weight: 600;
    text-decoration: none;
    font-size: 0.875rem;
    transition: opacity 0.2s;
}

.btn-primary:hover {
    opacity: 0.9;
}

main {
    margin-top: var(--header-height);
    display: flex;
    min-height: calc(100vh - var(--header-height));
}

.sidebar {
    width: 280px;
    border-right: 1px solid var(--border);
    padding: 2rem;
    position: sticky;
    top: var(--header-height);
    height: calc(100vh - var(--header-height));
    overflow-y: auto;
}

.sidebar h3 {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.sidebar ul {
    list-style: none;
}

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

.sidebar a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    display: block;
    padding: 0.25rem 0;
}

.sidebar a.active, .sidebar a:hover {
    color: var(--accent);
}

.content {
    flex: 1;
    padding: 3rem 4rem;
    max-width: 900px;
}

h1 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    font-weight: 800;
}

h2 {
    font-size: 1.5rem;
    margin: 2.5rem 0 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border);
}

p {
    margin-bottom: 1.25rem;
    color: var(--text-secondary);
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border);
    padding: 1.5rem;
    border-radius: 8px;
}

.card h4 {
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

code {
    background-color: #1F2937;
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
    font-family: monospace;
    font-size: 0.9em;
    color: var(--accent);
}

pre {
    background-color: #1F2937;
    padding: 1.5rem;
    border-radius: 8px;
    overflow-x: auto;
    margin: 1.5rem 0;
    border: 1px solid var(--border);
}

pre code {
    background: none;
    padding: 0;
    color: var(--text-primary);
}

table {
    width: 100%;
    border-collapse: collapse;
    margin: 2rem 0;
}

th {
    text-align: left;
    padding: 0.75rem;
    border-bottom: 2px solid var(--border);
    color: var(--text-primary);
    font-size: 0.875rem;
}

td {
    padding: 0.75rem;
    border-bottom: 1px solid var(--border);
    color: var(--text-secondary);
    font-size: 0.875rem;
}

footer {
    padding: 4rem 2rem;
    border-top: 1px solid var(--border);
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.badge {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    background: rgba(6, 182, 212, 0.1);
    color: var(--accent);
    border: 1px solid var(--accent);
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    margin-bottom: 1rem;
}