priyanshu112c/Nexus ? reverse-engineered prompt

Build me a polished front end shopping site for premium consumer electronics called Nexus. I want it to feel cinematic and high end, like a mix of Apple, Tesla, and a cyberpunk luxury brand, with smooth animations, a strong hero section, and an impressive product browsing experience.

It should have a homepage, product listing and category pages, product details with image gallery and specs, search, quick view popups, wishlist, and a cart that opens in a side drawer plus a full cart page. Add a flash deals section with live countdown timers, and make the whole site feel lively with subtle motion, scroll reveals, smooth scrolling, and small interactive effects.

Also include two visual themes, one dark and one light, with a nice transition when switching between them, and make cart and wishlist stay saved after refresh. Use mock product data only, no backend or real checkout. If you need current docs for any libraries, look them up online first.