As used in this Act: (a) “shelter” means the care of a minor in physically unrestricting facilities pending court hearing or disposition or execution of court order for placement; and (b) “detention” means the care of a minor alleged or adjudicated as a delinquent as defined in the Juvenile Court Act or the Juvenile Court Act of 1987, who requires secure custody for his own or the community’s protection in physically restricting facilities pending hearing by the court, execution of an order of court, placement or commitment.