No power and will not start

I have the car listed above that stalled out while driving, which it had been doing but this time it wouldn’t start again. The horn went off and radio said something about a theft system. It now has no power at all. Replaced the battery and all the fuses in engine and behind the drivers seat and still absolutely no power. No dash lights, radio or anything. Not sure if it has anything to do with the keys because I do not have the door key only the key that starts the vehicle. Any ideas what’s going on?