/* Hide validation before submit */
.wpcf7-form:not(.show-validation) .wpcf7-not-valid-tip {
    display: none;
}

/* Error styling */
.wpcf7-form .has-error input,
.wpcf7-form .has-error select,
.wpcf7-form .has-error textarea {
    border-color: #e74c3c;
}

/* Optional smooth UX */
.wpcf7-not-valid {
    outline: none;
}