No brake pressure

I'm not quite sure why it started, but my right front brake started dragging, then it got hot and destroyed the shoes. When it blew, there was also a big white puff of smoke from all of the brake fluid that sprayed out of the wheel cylinder. I changed the hose, and the wheel cylinder, and bled the brakes, I also of course change the shoes and hardware.

But now, pedal just goes straight to the floor.

I have no leaks anywhere.. Do you think something in the master cylinder was damaged? I'm at a loss here for ideas...