.min-vh-100 {
    min-height: 100vh;
}

.rounded-4 {
    border-radius: 1rem !important;
}

.rounded-top-4 {
    border-top-left-radius: 1rem !important;
    border-top-right-radius: 1rem !important;
}

.bg-gradient-danger {
    background: linear-gradient(135deg, #dc3545 0%, #c82333 100%);
}

.form-control:focus {
    border-color: #dc3545;
    box-shadow: 0 0 0 0.2rem rgba(220, 53, 69, 0.25);
}

@media (max-width: 576px) {
    .container-fluid {
        padding: 1rem;
    }

    .card-body {
        padding: 1.5rem !important;
    }

    .btn-lg {
        padding: 0.75rem 1.5rem;
        font-size: 1rem;
    }
}