Electrical system issues

I own an 82 cx 500 c. The headlight went out so I wen to replace the fuses. The fuse case plate was off and when I was checking all of the fuses to make sure all of the m were working the keys that were in the ignition slid down and the other keys on the chain came in contact with the bare fuse box. There was a spark and a tiny bit of smoke. Now even after replacing every fuse in the system the bike's lights won't work (any of them) and the bike won't start. Any ideas of what I need to do to get this fixed???