∞ forever components

Inputs & Switches

OTP Boxes

Four teal monospace OTP cells auto-fill digits with a slide-up bounce and blinking caret; sequence clears and loops. Dark background with glow on active cell.

csslight complexitymoderate motion

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When to use it

Authentication UI demos, login flow mockups, verification code input previews.

When not to

Actual interactive OTP input — this is display-only with no keyboard handling or real input events.

Working with an AI agent

Every component ships agent-ready metadata. An example instruction for this one:

Change cell count to 6 (set N=6), switch accent color from #3ff0c0 to #a78bfa, and slow the fill interval by changing the timer threshold from 34 to 50. Theme: dark tokens live in :root, the light variant in :root[data-theme="light"]; ?theme=light or a {type:'forever:theme'} postMessage switches at runtime.

Safe to edit

  • digit count (N=4)
  • accent/caret color (#3ff0c0)
  • fill interval timer threshold (34)
  • cell width/height (46px/60px)
  • bounce easing (cubic-bezier(.2,1.4,.4,1))
  • pause between fill and clear (timer>60)
  • theme tokens (:root dark defaults + [data-theme=light] overrides)

Keep intact

  • IIFE wrapper
  • prefers-reduced-motion guard (static fill fallback)
  • visibilitychange pause guard
  • theme hook (?theme= bootstrap + forever:theme message listener + theme tokens)

Known limitations

  • Not an interactive input — no keyboard events or focus management; wire real inputs before shipping
  • Cell count is JS-only (N constant); CSS gap and sizing not auto-scaled for larger N

otpinputmonospaceslide-uplooptealauthentication

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  • Checkbox MorphThree amber rounded checkboxes auto-cycle and respond to clicks; the box fills and a checkmark strokes in via animated dashoffset.
  • Star RatingFive gold stars auto-sweep ratings up and down; the active star pops with a scale bounce. Pointer sets the hover rating instantly.