shhiiivm/Snake ? reverse-engineered prompt

Build me a simple Snake game in C# that I can run and play on my computer.

I want the classic version where the snake moves around a grid, eats food, grows longer, and the game ends if it hits a wall or runs into itself. Please make the controls easy to use with the arrow keys, show the current score, and add a way to restart after game over. If it makes sense, include a clean start screen and make the game feel responsive and fun to play. Keep the code organized and easy to understand so I can tweak things later, like speed or grid size. If you need to look up current docs online for the best way to handle the game loop or keyboard input, feel free to do that.