A state appeals panel has ruled that trial courts have the authority to require a parent with sole custody of his or her children to pay child support to the other parent, even when the other parent doesn’t have custody. Attorneys in the case said it’s one of first impression in Illinois, where trial courts have not previously considered whether a custodial parent should pay child support to the noncustodial parent under a permanent custody arrangement. In a 25-page opinion issued last week, Justice …