body {
    background-color: #f8f9fa;
}

.card {
    border-radius: 10px;
}

.card-header {
    border-bottom: 1px solid #ddd;
}

.btn-primary {
    background-color: #007bff;
    border-color: #007bff;
}

.btn-primary:hover {
    background-color: #0056b3;
    border-color: #004085;
}

.card-body {
    padding: 2rem;
}

.invalid-feedback {
    font-size: 0.875rem;
}

@media (max-width: 576px) {
    .card {
        border-radius: 0;
    }
}