I like that it's a nice, clean implementation of the game and that it can generate new grids on demand :) I found the use of colours and gradients quite pleasing ✨
There were only a couple of things I thought were missing from the UI. First, hovering on a cell could highlights the corresponding row and column, which would help a lot with larger grids. Second, some way to "measure" the length of consecutive marked cells. But these are small comments, kudos!