Thank you for your kind words.
Actually, it would have been better to wait for the end of the animation for the cards to become interactable, but I didn't think that such a problem could occur in that limited time interval, I realized that while testing. And I'm glad the difficulty didn't bore you out. I had to do some balancing before uploading, it was really hard at first.
Also you made a good score. When I was testing, I usually finished with a score of around 4000. We're happy that you liked it.