StarkAg/GradeX ? reverse-engineered prompt

Build me a student portal for SRM University that brings everything into one clean dashboard, timetable, attendance, marks, calendar, mess info, and a few handy student tools like a seat finder and group utilities.

I want it to feel fast and simple on both desktop and mobile, with a dark theme, a polished home screen, and separate pages for schedule, attendance, marks, profile, and an AI assistant that can answer quick questions in context. Attendance should show per course percentage and leave tracking, marks should show results clearly, and the timetable should be easy to read by slot and support optional subjects. Make it work well as a web app and a PWA, and include a demo mode so people can try it without logging in.

Use current best practices for a real production app, with secure login, smooth navigation, and responsive UI. If you need to look up current docs online, do that.