lKinderBueno/Streamity-Xtream-IPTV-Web-player ? reverse-engineered prompt

Build me a clean IPTV web player for Xtream API playlists that runs in the browser and feels polished and easy to use.

It should let a user log in with their playlist details, browse live channels, movies, and series, and play everything smoothly without needing extra software. I want a modern interface with custom branding, so the name, logo, colors, and background can be changed easily. Please include a guide view with program info, 12 hour and 24 hour time display, favorites, resume playback, auto play next episode, and picture in picture mode.

Also make sure titles are cleaned up nicely, the layout works well on desktop and mobile, and the whole thing feels fast and simple. If you need to check current React docs or browser API details while building it, go ahead and look them up online.