If you look at the clutch shaft (under the cover behind the engine) and watch what happens to the clutch fork between the two clutches when you move the pedal, you'll be able to see what is happening. There is a linkage connecting the pedal to the clutch fork, and from your description, it may be that part of this linkage has come adrift. However it is also possible that the clutch fork is broken, or its pivot bolt has fallen out, or something may have happened to the clutch shaft or one or both of the clutches. The first step is to see if the fork moves properly when the pedal moves, or if there is a lot of pedal movement and hardly any fork movement. If the fork doesn't move much, follow the clutch linkage forward to the pedal and see what has fallen off. If the fork moves a long way but still not far enough to engage the clutch, it sounds like a clutch problem.
I suggest you post some pictures when you have done this first test.
