95 ford tbird front brake problems

the front brakes do not engage and the pedal goes to the floor almost.rear breaks are locking up when i press to the floor.there is fluid and its full.bad calipers?cannot stop all the way.

I would check for leaks also but normally you need a rebuilt master cylinder.
You have to bleed the system and remove the air in the new unit. Read the instructions. Get help if you have never done one.

thank you for the advice.