:root {
    --bg-color: #0A0F1D;
    --text-primary: #E2E8F0;
    --text-secondary: #94A3B8;
    --accent-green: #10B981;
    --accent-orange: #F97316;
    --border-color: #1E293B;
    --nav-bg: #111827;
    --card-bg: #161E2E;
}

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

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

header {
    background-color: var(--nav-bg);
    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-size: 1.25rem;
    font-weight: 700;
    color: var(--accent-orange);
    text-decoration: none;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 1.5rem;
}

nav a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s;
}

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

.btn-primary {
    background-color: var(--accent-green);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.85rem;
    transition: opacity 0.2s;
}

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

main {
    max-width: 1000px;
    margin: 3rem auto;
    padding: 0 2rem;
}

h1 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    border-left: 4px solid var(--accent-orange);
    padding-left: 1rem;
}

h2 {
    font-size: 1.75rem;
    margin: 2.5rem 0 1rem;
    color: var(--accent-green);
}

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

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

.code-block {
    background-color: #000;
    padding: 1rem;
    border-radius: 4px;
    font-family: 'Courier New', Courier, monospace;
    color: var(--accent-green);
    margin: 1rem 0;
    overflow-x: auto;
}

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

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

th {
    background-color: var(--nav-bg);
    color: var(--accent-orange);
}

footer {
    text-align: center;
    padding: 3rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.8rem;
}

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