body {
    background: #f4f6fb;
}

.sidebar {
    min-height: 100vh;
    padding: 20px;
}

    .sidebar .nav-link {
        margin-bottom: 10px;
        border-radius: 6px;
    }

        .sidebar .nav-link:hover {
            background: #1f2a40;
        }

.card {
    border-radius: 12px;
    box-shadow: 0px 4px 12px rgba(0,0,0,0.08);
}

.portal-card {
    transition: 0.2s;
}

    .portal-card:hover {
        transform: translateY(-3px);
    }