# Input OTP (Lumen Halo): prompt.md (v1.0.0)

- id: `lumen-input-otp` · version 1.0.0 · component · pro (All-Access)
- category: Inputs
- build: Base UI (one set of files; its dependencies follow the build)
- install (this build): `npx shadcn@latest add @beautiful-ui-pro/lumen-input-otp`
- npm dependencies: input-otp@^1
- registry dependencies: utils, https://beautiful-ui.dev/r/lumen-foundation.json
- docs: https://beautiful-ui.dev/components/lumen-input-otp
- The install command carries everything this item needs (files, CSS, tokens, npm and registry dependencies). Prefer it to copying source by hand.

A one-time code in recessed cells: the active cell draws the focus filament and a caret, digits rise in as they're typed, and a complete code lights the cells in sequence, left to right, with one soft cue. shadcn's Input OTP, cut from Lumen glass.

## Build it
- Stack: React 19 (`ref` is a plain prop), TypeScript, Tailwind CSS v4 utilities, a shadcn-initialised project with the `@/*` alias.
- Packages: `input-otp@^1`.
- Files: `components/ui/lumen/input-otp.tsx`; shared code: `lib/beautiful-ui/lumen/sound.ts`.
- Registry dependencies, installed with it automatically: shadcn `utils` (cn), `lumen-foundation`.
- Builds: one set of files for both, but its dependencies come in Base UI and Radix builds. Install the one that matches the project (see Install): a free item's bare URL installs the Base UI build of it and its dependencies.
- Exports to keep: `InputOTP`, `InputOTPGroup / InputOTPSlot`, `InputOTPSeparator`, and every exported type.
- CSS: the install merges this item's rules (the registry `css` field) into your global stylesheet, in `@layer components`, and adds the lumen foundation (tokens, keyframes, motion levels) once. Nothing to import by hand.
- Re-running `add` (or `--overwrite`) re-applies those rules: put overrides in your own CSS, never in the installed rules.
- Tokens: retheme with the `--lumen-*` custom properties (`--lumen-accent`, `--lumen-accent-text`, `--lumen-bad`, `--lumen-bad-text`, `--lumen-focus`, `--lumen-good`, `--lumen-good-text`, `--lumen-hairline`, `--lumen-ink`, `--lumen-muted-ink`, `--lumen-series-1`, `--lumen-series-2`, `--lumen-series-3`, `--lumen-series-4`, `--lumen-series-5`, `--lumen-series-6`, `--lumen-warn`, `--lumen-warn-text`); this item's CSS also reads `--lumen-font-mono`, `--lumen-radius-k`. Never add Tailwind colour classes inside the component.

```tsx
import { InputOTP, InputOTPGroup, InputOTPSeparator, InputOTPSlot } from "@/components/ui/lumen/input-otp";
```

## Parts

| Part | data-slot | What it is for |
|---|---|---|
| `InputOTP` | `input-otp` | Root (input-otp). |
| `InputOTPGroup / InputOTPSlot` | `input-otp-slot` | The cells. |
| `InputOTPSeparator` | `input-otp-separator` | A dash between groups. |

Style a part with `[data-slot="<slot>"]` selectors or its `className`; keep the attributes when editing.

## Sound
- Keep every `data-slot` and `data-sound` attribute: the sound layer reads them.
- Installing this item adds no audio. Nothing plays until the app mounts `GlassSoundProvider` once (install: `npx shadcn@latest add https://beautiful-ui.dev/r/glass-sound.json`, import from `@/components/beautiful-ui/glass-sound`); `GlassSoundToggle` is its mute control. Without a provider the audio engine never loads.

## Match the original
- Read `components/ui/lumen/input-otp.tsx` as the reference implementation before changing or recreating anything, and match it: sizes, colours per theme, motion timings, copy and behaviour.
- If you deviate (a prop you can't honour, a style you changed, a dependency you swapped), say so in your reply, part by part.
- Keep the accessibility contract, the keyboard map and the motion levels listed below.

## Use it when
- otp, one-time code, verification code, 2fa, two factor, pin input, magic code, shadcn input otp, Lumen
- Sign-in and sign-up verification codes
- Two-factor codes and short PINs

### Not when
- Passwords: use Input type=password
- Codes longer than 8 characters: use Input

## Mistakes
- Set autoComplete="one-time-code" so phones offer the SMS code
- Say what went wrong under the cells when a code fails

## Usage

```tsx
import { InputOTP, InputOTPGroup, InputOTPSeparator, InputOTPSlot } from "@/components/ui/lumen/input-otp";

<InputOTP maxLength={6} onComplete={verify}>
  <InputOTPGroup>
    <InputOTPSlot index={0} /><InputOTPSlot index={1} /><InputOTPSlot index={2} />
  </InputOTPGroup>
  <InputOTPSeparator />
  <InputOTPGroup>
    <InputOTPSlot index={3} /><InputOTPSlot index={4} /><InputOTPSlot index={5} />
  </InputOTPGroup>
</InputOTP>
```

## Props

| Prop | Type | Default | What it does |
|---|---|---|---|
| `maxLength` | `number` |  | Number of slots. |
| `value / onChange` | `string` |  | Controlled value. |
| `onComplete` | `(code) => void` |  | Fires when every slot is filled; the cells light and a soft cue plays. |
| `pattern` | `RegExp source` |  | Allowed characters (REGEXP_ONLY_DIGITS from input-otp). |
| `aria-invalid` | `boolean` |  | Put on InputOTP to turn the cells to the bad tone. |

Full docs: https://beautiful-ui.dev/components/lumen-input-otp

## Customising
- Colours: set the `--lumen-*` tokens on `:root`, or on a container with the `lumen-scope` class to retheme one area. Add the `lumen-inherit` class to follow your shadcn palette instead (`--chart-N`, `--destructive`).
- Dark mode follows the `.dark` class on an ancestor (the shadcn and next-themes convention).
- Update later by re-running the install with `--overwrite` (review the diff if you edited it). Changelog: https://beautiful-ui.dev/r/changelog.json

## Keyboard

| Keys | Action |
|---|---|
| 0–9 | Type; the next cell activates |
| Backspace | Clear the last digit |
| ⌘V / Ctrl V | Paste a whole code |

## Motion inventory

| Interaction | What moves |
|---|---|
| Type | The digit rises in |
| Complete | Cells light left to right (60ms apart); a soft success cue |

## Accessibility contract (preserve when editing)
- One real input underneath: paste, autofill (one-time-code) and screen readers work
- Invalid state uses aria-invalid

## Install

```bash
npx shadcn@latest add @beautiful-ui-pro/lumen-input-otp
```

Pro item: needs the `@beautiful-ui-pro` registry in `components.json` and `BEAUTIFUL_UI_TOKEN` in `.env.local` (https://beautiful-ui.dev/account). Setup: https://beautiful-ui.dev/docs/pro. Your components.json `style` picks the build: radix-*, new-york and default get Radix, base-* gets Base UI.

## Credits
- Built on shadcn/ui (https://ui.shadcn.com)
- input-otp (https://input-otp.rodz.dev)

The lumen foundation (the tokens listed above, keyframes and motion levels) installs once with the first component; its CSS is public at https://beautiful-ui.dev/r/lumen-foundation.json.