1996 Toyota Pickup No Clutch Pressure

Transmission problem
1996 Toyota Pickup 4 cyl Four Wheel Drive Manual 140k miles

I have a 1996 tacoma and the clutch pedal has been getting shorter and shorter over the years, finally the other day it hit the floor and has no pressure and will not allow me to put into gear.

i pulled off the salve cylinder (the one underneath connected to the fork) and it had a patch where the surface inside was flaked, cleaned it, re-attached and bled. Still no pressure. Also the piston seal seems a lil worn. The boot seat groove had corrsion and grim and had fuild inside the boot, it was leaking a lil, I thought I found the cuase but cleaned, seated, no leak and still no pressure

i noticed that when the resevior cap is off and I depress the pedal, the resevior level moves up and down.

to help clear things up a have a few question. Is the slave cylinder suppose to have an air tight seal between cylinder space and the space above the piton inside the boot? If the resevior is chnging when I push the pedal does that mean the master cylinder seals are bad? Is there some kind of special procedure like depressing the clutch while bleeding to do it properly?

thanks for any help you can provide