uguratadargun/conference ? reverse-engineered prompt

Build me a WhatsApp style conference call app where people can join a live audio and video room using a LiveKit server URL and token.

I want a clean dark themed interface that feels modern and is easy to use on desktop and mobile. The app should let users connect to a call, see multiple participants on screen, and use simple controls to turn the microphone and camera on or off, then hang up when they are done. Make the main flow straightforward, first enter the server details and token, then join the call.

Please keep it polished and responsive, with a nice conference style layout and clear buttons. Use current best practices for React and TypeScript, and if you need to check anything about LiveKit or the UI components, look up the latest docs online.