:root {
    --deep-dark-slate: #0F172A;
    --steel-blue: #3B82F6;
    --dark-charcoal: #1F2937;
    --text-light: #F8FAFC;
    --text-muted: #94A3B8;
}

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

.bg-charcoal {
    background-color: var(--dark-charcoal);
}

.text-blue {
    color: var(--steel-blue);
}

.border-blue {
    border-color: var(--steel-blue);
}

.btn-primary {
    background-color: var(--steel-blue);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 0.375rem;
    font-weight: 600;
    transition: all 0.2s ease;
    display: inline-block;
    text-decoration: none;
}

.btn-primary:hover {
    background-color: #2563EB;
    transform: translateY(-1px);
}

.nav-link {
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.2s ease;
}

.nav-link:hover, .nav-link.active {
    color: var(--text-light);
}

.card {
    background-color: var(--dark-charcoal);
    border: 1px solid #334155;
    border-radius: 0.5rem;
    padding: 1.5rem;
}

pre {
    background-color: #000;
    color: #10B981;
    padding: 1rem;
    border-radius: 0.25rem;
    overflow-x: auto;
    font-family: 'Fira Code', monospace;
    font-size: 0.875rem;
}