Just noticed these two new posts, I think it would be quite a large task to give the site a new coat of paint. I have a rough image of a desktop design but that's about it. Server-side, the code probably wouldn't change much so it would be mostly JS/CSS type work if I had to guess.
What are you currently using for back-end/front/end? I'm guessing PHP for back-end, which I know little to nothing about, but is it just vanilla JS for front-end currently?