/* Field validation — red border + inline hint (login, registration, contact) */
.field-invalid,
input.field-invalid,
select.field-invalid,
textarea.field-invalid {
    border-color: var(--urban-primary, #ef4536) !important;
    box-shadow: 0 0 0 2px rgba(239, 69, 54, 0.2) !important;
}

.field-error-hint {
    display: block;
    color: var(--urban-primary, #ef4536);
    font-size: 0.8125rem;
    margin-top: 4px;
    line-height: 1.35;
}

.urban-auth-form .field-invalid,
.rd-mailform.urban-auth-form .field-invalid,
.rd-mailform .form-group input.field-invalid,
.rd-mailform .form-group select.field-invalid,
.rd-mailform .form-group textarea.field-invalid {
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}