Theme Toggle iOS

A single-word theme pill: the accent thumb crosses the track and drags the night layer behind it while the word rolls, letter by letter, from Light to Dark.

An eclipse orb: the disc is the celestial body itself — a night face slides across the sun with a hard terminator while night spreads over the page outward from the orb.

Celestial theme switcher — a porthole onto the sky: the night rises through it as a hard horizon, the sun sets below it and the moon rises out of it with the stars.

A two-word segmented theme control whose pill moves edge-first: its leading edge lunges to the other word and drags the night behind it, then the trailing edge follows and the pill snaps taut around the new label.