miralandstof/videodownloader — reverse-engineered prompt

Build me a polished web app called SnapGrab for downloading videos. It should feel modern and mobile friendly, with a dark neon look using cyan and pink, big stylish headings, and a clean simple flow.

A user should paste a video link from YouTube, TikTok, Instagram, Facebook, or Twitter/X, then the app analyzes it, shows the title, thumbnail, duration, and available quality options, then lets them download. If real downloading needs an outside service, set it up with a clean demo placeholder and make the code ready to connect to a paid API later.

Please include language switching with Czech as the default and support around 15 languages. Add local download history, favorites, basic download stats, and make it installable as a PWA with offline support. It should work well on phones, tablets, and desktop.

Use the existing Next.js and TypeScript setup, make it deployable to Vercel, and support MongoDB for stats but still work without it using local storage.