kingz7x/FlyGuiMacOs ? reverse-engineered prompt

Build me a Roblox utility hub called Bananao Hub v2.0 that feels clean and modern, with a desktop style window, rounded corners, smooth animations, draggable and resizable layout, and a gray theme with subtle gradients. I want the UI to be easy to hide and show with the Alt key.

The hub should let the player toggle fly mode on and off, change flight speed from 10 to 300, and move smoothly with camera based controls using W A S D, Space to go up, and Left Ctrl or C to go down. Add a noclip toggle that lets the player walk through walls. Also include quick teleport buttons to move up 50 studs or down 50 studs. Make the interface organized and simple, with clear buttons and player tools that feel like a modern app.

If you need to, look up current Roblox docs or best practices online. Please put everything into a single working script so I can paste it straight into an executor.