I’m building a full-featured online store focused on selling downloadable E-books and Software. What I need is a fast, mobile-first site with a clean, modern UI and enterprise-grade security baked in from the ground up. Core requirements • User authentication must support classic email + password, major social logins, and an optional two-factor step for added protection. • A robust admin panel should let me upload products, attach files/licences, set pricing and coupons, and manage orders end-to-end. • Customers have to be able to pay via both online gateways and, where practical, Cash-on-Delivery; once payment clears, the file download (or licence key) should unlock automatically. • Real-time order tracking and status updates are essential—even for digital goods—so buyers always know what’s happening. • Code and assets need to be optimized for speed (Core Web Vitals in the green) and the layout must adapt flawlessly to desktop, tablet, and mobile. Security is a top priority: please outline how you’ll handle secure file storage, server-side validation, rate limiting, and any frameworks or best practices you plan to implement. Deliverables 1. Production-ready website deployed on my hosting. 2. Source code in a public or private repo with clear setup instructions. 3. Documentation covering the admin workflow, payment setup, and security measures. 4. A brief hand-off session or video walkthrough. When you respond, give me: • A realistic total budget with milestones. • A clear timeline showing key phases from design to launch. • The tech stack you recommend and why it suits a digital-goods store. I’m ready to move forward as soon as we agree on scope, cost, and schedule.