Keyboard-only support for PC?

So far, I'm really enjoying this game, but sometimes when I'm using the mouse, it slips and I select the wrong command. It's been a minor inconvenience, but I've looked for keyboard-only support options as a result, and I have been unable to find any.

Is there a way to play this on PC w/ keyboard only, not using the mouse? Would it rely on me having to use a gamepad? Is this something that can possibly be implemented? Thank you in advance.