Check your brake fluid level. That is the clutch fluid too.

 

Thanks. I'll definitely check that. I was wondering why I couldn't find a separate master cylinder for the clutch

 

Good call on the fluid check. You also might want to bleed the clutch master/slave cylinder even though they share a common reservoir they have dedicated hydraulic lines. But if the pedal feels weird like it doesn't stiffen up right away then that is a good place to check. There shoudn't be much free travel from the top otherwise there is air in the system and the pedal will feel weird and this means the slave cylinder is not getting sufficient throw to actuate the pressure plate. I just used handheld MityVac for this on my last clutch swap (i.e. EVO).

For the shifter to not engage the gear is because the clutch has to disengage the flywheel so your getting blocked from engagement in the transmission is probably more accurate. It'll just kick the hubslider back which is what your probably experiencing. I'd have to check the Juke FSM but on my vehicle the shifter bracket assembly on the trans case also has to be precisely aligned using the bolts to get the shifter to operate properly otherwise it produces similar symptoms but that's my vehicle.

 

Either your clucth is gone or your slave cylinder.

 

Slave is most likely gone. Fluid check is just an easy thing to do.

 

Check for fluid leaks under the transmission as well for the hydraulic slave cylinder. You might also check for leaks near the clutch pedal to see if it's the master clutch cylinder faililng though less likely I've had one fail before on another car and the brake/clutch fluid will get inside on the carpet.