:root {
    --bg-primary: #0A0F1D;
    --bg-secondary: #111827;
    --text-primary: #F9FAFB;
    --text-secondary: #9CA3AF;
    --accent-red: #EF4444;
    --accent-graphite: #374151;
    --border-color: #1F2937;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

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

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

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

a:hover {
    color: #F87171;
}

header {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo {
    font-weight: 700;
    font-size: 1.25rem;
    letter-spacing: -0.025em;
    color: var(--text-primary);
}

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

.nav-links a {
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
}

.nav-links a:hover {
    color: var(--text-primary);
}

.btn-primary {
    background-color: var(--accent-red);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 0.375rem;
    font-weight: 600;
    font-size: 0.875rem;
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    background-color: #DC2626;
    color: white;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: 2rem;
    padding: 2rem;
}

aside {
    border-right: 1px solid var(--border-color);
    padding-right: 2rem;
}

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

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

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

.sidebar-nav a {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

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

main {
    max-width: 800px;
}

h1 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    letter-spacing: -0.025em;
}

h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-top: 2rem;
    margin-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.5rem;
}

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

.code-block {
    background-color: #000;
    border: 1px solid var(--border-color);
    padding: 1rem;
    border-radius: 0.5rem;
    font-family: monospace;
    font-size: 0.875rem;
    margin-bottom: 1.5rem;
    overflow-x: auto;
}

.technical-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-color);
    padding: 1.5rem;
    border-radius: 0.5rem;
}

.card h3 {
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
}

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

.badge {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    background-color: var(--accent-graphite);
    color: var(--text-primary);
    margin-bottom: 1rem;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 1.5rem;
}

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

th {
    color: var(--text-primary);
    font-weight: 600;
}

td {
    color: var(--text-secondary);
}