:root {
    --primary-blue: #0A1128;
    --accent-aqua: #00B4D8;
    --text-light: #E0E1E6;
    --text-muted: #94A3B8;
    --bg-dark: #0A1128;
    --bg-card: #16213E;
    --border-color: #1E293B;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-light);
    line-height: 1.6;
    margin: 0;
    padding: 0;
}

header {
    background-color: rgba(10, 17, 40, 0.95);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 2rem;
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--accent-aqua);
    text-decoration: none;
    letter-spacing: -0.025em;
}

nav {
    display: flex;
    gap: 1.5rem;
}

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

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

.btn-primary {
    background-color: var(--accent-aqua);
    color: var(--primary-blue);
    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 {
    max-width: 1000px;
    margin: 3rem auto;
    padding: 0 2rem;
}

h1, h2, h3 {
    color: white;
    font-weight: 700;
}

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

.card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 2rem;
    margin-bottom: 2rem;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

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

.code-block {
    background-color: #011627;
    padding: 1rem;
    border-radius: 4px;
    font-family: 'Fira Code', monospace;
    font-size: 0.875rem;
    overflow-x: auto;
    border: 1px solid var(--border-color);
    color: #ADDB67;
}

.badge {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    background: rgba(0, 180, 216, 0.1);
    color: var(--accent-aqua);
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    margin-bottom: 1rem;
}