soumyachoudhary339-eng/paramount_ai ? reverse-engineered prompt

Build me a simple full stack app called Paramount AI.

I want a clean, modern web app with a frontend and a backend, and the main thing should feel like an AI powered product. Make it easy for a user to sign in, ask questions or submit prompts, and see useful responses in a polished interface. Keep the design professional and responsive so it works well on desktop and mobile.

Set up the project so the frontend talks to the backend cleanly, and make the app easy to run locally. If you need to look up current docs online, go ahead. Please also include a sensible default landing page, a basic navigation flow, and enough structure that I can expand it later without having to rebuild everything.