BIRMINGHAM, Ala. — Emails and phone calls from same-sex couples, worried about the legal status of their marriages and keeping their children, flooded attorney Sydney Duncan’s office within hours of the Supreme Court’s decision eliminating the constitutional right to abortion.The ruling last week didn’t directly affect the 2015 decision that paved the way for same-sex marriage. But, Duncan said, it was still a warning shot for families headed by same-sex parents who fear their rights could evaporate …