No power in the car

I was trying to get my car running again as I was trying to get it to fire I noticed I did not tighten the black wire on the alternator all the way. As I was doing that the wrench got close to the valve cover and it sparked. Now the car has zero power won't crank fans dont come on when I turn the key. My horn dosen't even work anymore. Wondering what I could have fried.