clutch pedal pressure goes up and down

[kouki_s14]

i searched and couldn't really find anyone with the same problem
so when my car is cold my clutch pedal is really soft and i have to push the pedal all the way to the floor for it to engage smoothly and not grind. Then as i drove around and the motor warmed up the clutch line, so i assume, the pedal got stiff and it caught near the top of the travel. been like this for some time now.
i think hmmm, there must be air in the line somewhere, so i finally have the time and i proceed to bleeding the clutch to get the air out. bleeding was done and nothing, pedal is mushy and yet again must be pushed to the floor to get into gear, i am absolutely sure there is no air in the line, since i bled it 20 times. i drove it around to try and warm up the line and see if the heat would firm up the pedal like it did before. i didnt drive too much, but it seemed like it helped move the catching point up, but i cant be sure. i will have to see tomorrow when im less tired. i dont understand why there is no pressure until it warms up, and bleeding it did not help. it was working fine right before i bled it, nice and firm. so im assuming the MC and SC are fine.
anyone have any ideas what might be wrong?

also i dont have a clutch dampener since my car was auto before
the clutch hardline is new from dealer and from hardline to slave is a stainless steel clutch line

thanks for any help

henry