hey! I found this because I have been searching for resources on making a game with these same mechanics. Also using unity, and am rather new to it. (Mainly do design but am expanding out to unity)
Anyways, I would love to learn more about how you are setting these interactions up! I am having the hardest time with the dumbest things like cards attaching and moving with others, or knowing what is in the stack.... and a lot more ha.
Thanks!