Branded Timed Quiz Platform

I need a full-stack web application that lets three clear user groups interact seamlessly: Admin who manages the platform, Customers who create quizzes, and Participants who take quizzes. Customers must be able to compose their own timed quizzes, set individual countdowns for every question, and publish them under event-specific branding using their own logos, colors, and even a custom layout or structure.

Every question’s timer has to be enforced on the server side so participants cannot pause, refresh, or copy the content into AI tools; once the clock hits zero the answer is locked and the next screen appears automatically.

For rewards, the system should rely on a Points system that accumulates over time. Scores from each quiz feed a running total, and I will approve the winners from the admin dashboard before any prize is dispatched.

Deliverables
• Responsive website (desktop & mobile) with secure sign-up/login.
• Dashboard for Customers to build, brand, schedule, and manage quizzes.
• Admin panel for user management, leaderboard review, and reward approval.
• Participant interface with real-time timers, instant feedback, and a profile showing accumulated points.
• Leaderboard that updates as soon as the admin confirms the results.
• Source code in a private Git repo, basic README, and deployment script.

Please outline your approach to the timer logic, anti-cheating safeguards, and the reward approval workflow when you respond, along with milestone estimates for an MVP followed by the fully featured release.