sid1114911149/Job_Portal_MERN_Stack ? reverse-engineered prompt

Build me a job portal web app where employers can post jobs and candidates can browse and apply for them.

I want a clean home page, sign up and login for both job seekers and recruiters, a dashboard for recruiters to manage posted jobs, and a dashboard for candidates to see jobs they applied to and update their profile. Users should be able to search and filter jobs by title, location, and category, view a job detail page, and submit an application with their resume and basic info.

Please set it up as a full stack app with a frontend and backend, and make the experience feel polished and easy to use. If anything in the stack needs current best practice details, look up the latest docs online and use sensible defaults. Also include basic validation, error handling, and a simple responsive design so it works nicely on mobile too.