Not sure what you are trying to accomplish, but for sure you can have an L3 out in area 0 by configuring external routed domain and choosing OSPF, regular area and 0 as the area number.
I didnt get what you mean by SVIs in different area since you define subnets inside BD and the routing protocol to connect to external router is only used for external communication, inside the fabric you run MPBGP.
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