Finish MERN Video Downloader Site

I already have a working MERN-stack codebase for a “YouTube-style” video info & downloader site, but it still feels rough around the edges. The core backend in Node.js/Express is in place and the database is wired up with MongoDB; where I need the most help is fixing and completing the current code, especially the React pages and overall user interface. Here is what I still need done—and why your expertise matters: • React front-end polish – Build or refactor components for the home page, results page, and download panel. – Ensure video URL input is robust, provides instant validation, and gracefully handles errors. – Display the fetched title, channel, duration, and thumbnail in a clean, responsive card layout. • Download workflow – Hook the validated link into the existing Node/Express API so users can download only videos that are legally permitted. – Show real-time progress or at least clear feedback (e.g., “preparing file”, “ready”, “error”). • Responsive & modern UI – Material-UI or Tailwind is fine—just keep the design lightweight and mobile-first. – Smooth transitions and consistent styling across breakpoints. • Bug fixing & deployment – Squash any edge-case crashes, memory leaks, or API hiccups you find. – Walk me through deploying to either Vercel or Render; a Docker option for VPS is also okay. You can freely improve the server code where it makes sense, but the priority is the React side and delivering a feature-complete, polished experience. I’m comfortable reading code, so concise, well-commented commits or pull requests are enough for knowledge transfer. Timeline: I’d like this wrapped up within a month, with incremental pushes so we can test together as we go. If you love clean UI work and know the MERN stack inside out, let’s get this site production-ready.