GourangaDasSamrat/Gemini-Clone ? reverse-engineered prompt

Build me a clean Gemini style AI chat app that works in the browser with HTML, CSS, and JavaScript. I want it to look and feel like Google Gemini, with a modern responsive chat interface, a nice landing state, chat bubbles, loading feedback, and smooth scrolling between messages.

It should connect to Google Gemini using an API key from a simple config file, so I can swap in my own key easily. Make the assistant replies support formatted text and code blocks, with markdown rendering and syntax highlighting so code answers look good. Please include solid error handling too, so if the API fails or the key is missing, the user sees a friendly message instead of a broken screen.

Keep the design polished on mobile and desktop, and make the whole thing easy to run by just opening the main page. If you need current API details, look up the latest docs online.