tulovec96proto/OrionUI--Libary-Backup ? reverse-engineered prompt

Build me a cleaned up Lua UI library based on this old Orion UI backup, and make it actually work nicely in one file.

I want it to be easy to drop into a project and use right away, with a simple way to create windows, tabs, sections, buttons, toggles, sliders, dropdowns, text inputs, and labels. Make the UI look modern and polished, with smooth animations, good spacing, and a dark theme that feels like the old Orion style but more stable.

Please fix any broken parts in the backup, keep the code organized, and make sure the main functions are easy to understand from the examples in the file. If something is unclear, look up current docs online if you need to. I’d also like sensible defaults, dragging for the main window, and clean callbacks for user actions.