2001 Tiburon no power at all

I just replaced my manual trans and when I was
hooking everything up I went to go attach my
battery connections. I had the body ground hooked
up and went to go attach the engine ground to the
negative post, but it slipped and accidentally arced
on the positive post. I had smoke coming from the
arc and back of my engine. Car has no power at all.

The dome light doesn't come on when the door is
opened. I know all my connections are good and
my ground for the starter is attached to the trans.
What could my issue be? I'm hoping it's a relay or a
fuse, not that I fried an ECM. But that being said.
The car would still have power right?

Any help would be greatly appreciated.