/* Mensaje de validación del FormValidator */
.validation-message {
    width: 100%;
    margin-top: 0.25rem;
    font-size: 0.875em;
    color: #dc3545;
    display: block;
}

/* Campo inválido */
.is-invalid {
    border-color: #dc3545 !important;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12' width='12' height='12' fill='none' stroke='%23dc3545'%3e%3ccircle cx='6' cy='6' r='4.5'/%3e%3cpath stroke-linejoin='round' d='M5.8 3.6h.4L6 6.5z'/%3e%3ccircle cx='6' cy='8.2' r='.6' fill='%23dc3545' stroke='none'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right calc(0.375em + 0.1875rem) center;
    background-size: calc(0.75em + 0.375rem) calc(0.75em + 0.375rem);
    padding-right: calc(1.5em + 0.75rem);
}

/* Botón deshabilitado */
.btn-login:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-disabled {
    opacity: 0.6;
    cursor: not-allowed;
    pointer-events: none;
}