paper-design/liquid-logo ? reverse-engineered prompt

Build me a small web app that turns a logo into a shiny liquid metal version, like the demo at liquid.paper.design.

I want to be able to upload or swap in a logo, and see it rendered with a glossy, flowing metal look in the browser. It should feel playful and polished, with smooth animation and a nice dark presentation so the effect stands out. Make it responsive, so it looks good on desktop and mobile, and keep the UI simple so the logo effect is the main focus.

If you need to, look up the current docs or best practices for the shader and rendering setup before wiring it up. I also want it to be easy to tweak the look a bit, like the shine, distortion, and color tone, without making the interface complicated.