body {
    background: #f1f5f9;
}

.sidebar {
    height: 100vh;
    background: #0f172a;
    color: white;
    position: fixed;
    width: 240px;
}

.sidebar a {
    color: #cbd5e1;
    display: block;
    padding: 12px 20px;
    text-decoration: none;
}

.sidebar a:hover {
    background: #1e293b;
    color: #06b6d4;
}

.content {
    margin-left: 240px;
    padding: 30px;
}

.card-custom {
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}