Light and Dark mode

Toggle button animation for light and dark mode.
I use dark mode on my mobile quite often especially in my bedroom just before going to sleep.

Not only the lazy people on the bed like me! There's research that: In people with normal vision, visual performance tends to be better with a light mode, whereas some people with cataract and related disorders may perform better with dark mode.(https://www.nngroup.com/articles/dark-mode)

Now it is the time to investigate how we transfer from one to the other nicely and smoothly.
Here's my experiment to change the modes including the toggle and the background itself.
Welcome to the dark side!