Develop a Responsive E-commerce Store with Payment Gateway Integration

I need a fully functional e-commerce store to sell various products online.

What needs to be done:

• Design and implement a responsive user interface for product display and checkout.
• Integrate a secure payment gateway (e.g., SSLCommerz, Stripe).
• Develop an admin panel for product management, order tracking, and user management.
• Implement user authentication and authorization.

Deliverables:

• A live, fully functional e-commerce website.
• Source code and deployment instructions.

The store should be scalable and user-friendly, providing a seamless shopping experience for customers.