Klose-dev/QuickCart ? reverse-engineered prompt

Build me a clean modern eCommerce frontend for QuickCart that feels fast, polished, and easy to browse. I want a responsive shopping site with a nice homepage, product listing sections, product detail views, a cart experience, and a simple checkout style flow, all styled with a fresh customizable look. Make the UI reusable so it is easy to change colors, layouts, and content later, and keep everything mobile friendly.

Use the existing Next.js setup and Tailwind styling, and organize the screens and components in a way that would be easy for contributors to extend. Add smooth interactions and subtle animations where they make the store feel more alive, but keep it lightweight and clean. If you need to check current Next.js or Tailwind guidance online, feel free to do that.