.field-error {
    border: 2px solid #dc3545 !important;
    box-shadow: 0 0 5px rgba(220, 53, 69, 0.3) !important;
    animation: pulse-error 0.6s ease-in-out;
}

@keyframes pulse-error {
    0% {
        box-shadow: 0 0 5px rgba(220, 53, 69, 0.3);
    }

    50% {
        box-shadow: 0 0 15px rgba(220, 53, 69, 0.6);
    }

    100% {
        box-shadow: 0 0 5px rgba(220, 53, 69, 0.3);
    }
}

.validation-message {
    color: #dc3545;
    font-size: 0.875em;
    margin-top: 0.25rem;
}