#!/bin/bash validate_domain() { if [[ ! $1 =~ ^[a-zA-Z0-9][a-zA-Z0-9-]{1,61}[a-zA-Z0-9]\.[a-zA-Z]{2,}$ ]]; then echo -e "${RED}Invalid domain format${NC}" return 1 fi return 0 } validate_email() { if [[ ! $1 =~ ^[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Za-z]{2,}$ ]]; then echo -e "${RED}Invalid email format${NC}" return 1 fi return 0 }