Drag system:
delayed too much -> maybe its best to teleport <Card> to mouse location
Feeling:
all elements are static (no animation) -> maybe add:
A ... simple sinus/texture noise distortion
B ... camera movement around visible map
just for the shake sth is moving
Other Animations
When player do action like:
click/hovering on button -> do some visual, sound feedback
Sound
Interesting -> but I found pattern loop very fast -> short repetitive feeling