good twist on the turn-based formula!
I especially like the branches of decisions you have available when multiple types of enemies are present. If you have a tank, healer and brawler, you can use the brawler to kill the tank, but that means you need the brawler alive which means you take more damage, and also if you don't kill the healer first you get heals later but you might also delay the tank's death.
I will piggy back off the comment below and say that the way you interact with the controls could indeed be a bit easier on the mouse. Maybe the bit of the action log where the enemies do their stuff could be displayed sequentially without the need to click to jump to the next line/step. Also, the camera moving together with the mouse is an interesting bit of juice but it can be a bit dizzying at times
Good stuff for a firt attempt at turn-based combat though! I believe you should push this idea forward and see where it gets