If the pedal is going to the floor, than there is either air in the system caused from a leak or an improper bleed procedure, or the slave cylinder is damaged internally. Remove the slave cylinder and bench bleed it to see if it will bleed without leaking from the rear (where it mounts to the firewall). If there is brake fluid exposed in there than the slave cylinder is bad. I would check the slave first, and if its all clean where it mounts (2 bolts), than bleed the slave cylinder from the bleeder screw on the transaxle. Make sure its done correctly or else you will end up with the same problem you have now. If all else fails, check the lines and fittings for leaks. If all good than replace the slave cylinder with a new one (remanufactured), and bench bleed it before you put it on. After it is on, you must bleed the line out as well. After that, pump the clutch pedal with the engine running until the clutch pedal returns on its own and has minimal pedal play.