I thought this was really solid. Everything felt polished and cohesive and worked well together. It had really nice game feel and was a pleasure to play. In my opinion, you got the pacing spot on too, building each mechanic up and introducing new mechanics.
The style was simple but highly polished with a lovely colour palette and some nice effects and polish.
Overall it didn't feel much like I was playing a game jam game, it felt almost like a finished product, well done!