:root {
    --primary: #2563eb;
    --dark: #1e293b;
    --light: #f8fafc;
    --border: #e2e8f0;
}

body { font-family: 'Inter', sans-serif; background-color: var(--light); color: var(--dark); }
.card { border: none; border-radius: 12px; box-shadow: 0 4px 6px -1px rgba(0,0,0,0.1); }
.btn-primary { background-color: var(--primary); border: none; padding: 10px 20px; border-radius: 8px; }
.sidebar { background: var(--dark); color: white; min-height: 100vh; }
.nav-link { color: #94a3b8; transition: 0.3s; }
.nav-link:hover, .nav-link.active { color: white; background: rgba(255,255,255,0.05); }
.form-control { border: 1px solid var(--border); padding: 12px; border-radius: 8px; }