//AngularJS Forms Validation
input.ng-invalid,
textarea.ng-invalid,
select.ng-invalid {
  color: @brand-danger;
  border-color: @brand-danger;
}
input.ng-invalid:focus,
textarea.ng-invalid:focus,
select.ng-invalid:focus {
  border-color: lighten(@brand-danger, 10%);
}

.ng-invalid + .input-group-btn {
  button {
    color: @white;
    background-color: @brand-danger;
    border-color: @brand-danger;
  }
}