Keyitdev/sddm-astronaut-theme ? reverse-engineered prompt

Build me a modern SDDM login screen theme pack with a sleek space and sci fi look, with a handful of preset styles people can switch between easily. I want it to feel polished on first boot, with a nice clock, username and password area, clear focus states, and support for the on screen keyboard.

It should include a few different visual presets, some with animated backgrounds and some static, so the whole look can be changed by editing one config file. Make it easy to install on Linux and easy to preview without logging out. If you need to, look up current Qt6 and SDDM docs online so the theme works with modern versions.

Keep the design optimized for 1080p but make sure it still scales reasonably on other resolutions. Include fonts and backgrounds in the theme so it feels complete out of the box.