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A material-style loading arc that grows, chases its tail and rotates: one seamless 1.5 s loop.
Pull-to-refresh puck: slides down rotating with the pull, spins as a loader, then shrinks away.
Circular progress: the ring fills with an ease, a centre dot pops on completion, then the ring sweeps clear.
Hamburger icon that morphs into a close X and back with true path morphs, not a crossfade.
Failure state: a red disc pops in, the cross draws on, then a short decaying 'no' shake before it settles.
Download icon: the arrow drops in, bounces, then falls into the tray, which squashes to catch it.
Success confirmation: a green disc pops in with a little overshoot, a ring ripples out and the tick draws itself on.
