shrutikalwar8/mern-portfolio ? reverse-engineered prompt

Build me a personal portfolio website that feels modern and polished. I want a React frontend with pages for Home, About, Skills, Projects, Contact, and Resume, plus a reusable navbar and footer. The site should work well on mobile and desktop, include smooth animations, and have a dark mode toggle.

Please make the contact form fully functional too. It should validate required fields, check that the email looks valid, show a success message when it sends, clear the form afterward, and show a helpful error if the backend is down. I also want a simple Node and Express backend with a MongoDB connection, a health check endpoint, and an API route for contact form submissions.

Use a clean layout, keep the content easy to edit, and wire the frontend to the backend with an API base URL setting. If you need to check current docs for setup details, feel free to look them up online.