# Radio Cards (Notchset): prompt.md (v1.0.0)

- id: `radio-cards` · version 1.0.0 · component · pro (Pro)
- category: Selection
- build: Base UI (this item also ships a Radix build)
- install (this build): `npx shadcn@latest add @beautiful-ui-pro/radio-cards`
- npm dependencies: @base-ui/react@^1
- registry dependencies: utils, https://beautiful-ui.dev/r/notchset-foundation.json
- docs: https://beautiful-ui.dev/components/radio-cards
- The install command carries everything this item needs (files, CSS, tokens, npm and registry dependencies). Prefer it to copying source by hand.

A radio group of 140px cards: name and node, a mono meta line, a description and a price; picking one traces its border and then pops its dot, and disabled cards say why.

## Build it
- Stack: React 19 (`ref` is a plain prop), TypeScript, Tailwind CSS v4 utilities, a shadcn-initialised project with the `@/*` alias.
- Packages: `@base-ui/react@^1` (Base UI build); `radix-ui@^1` (Radix build).
- Files: `components/ui/notchset/radio-cards.tsx`; shared code: `lib/beautiful-ui/notchset/radio.tsx`, `lib/beautiful-ui/notchset/instrument.tsx`, `lib/beautiful-ui/notchset/root.ts`.
- Registry dependencies, installed with it automatically: shadcn `utils` (cn), `notchset-foundation`.
- Builds: separate Base UI and Radix files. 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: `RadioCard`, `RadioCards`, and every exported type.
- CSS: the install adds the notchset foundation (tokens, keyframes, motion levels) to your global stylesheet 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 `--notchset-*` custom properties (`--notchset-check`, `--notchset-control-edge`, `--notchset-draw-from`, `--notchset-ease-bloom`, `--notchset-ease-travel`, `--notchset-fade`, `--notchset-focus-color`, `--notchset-focus-inset`, `--notchset-life-from`, `--notchset-life-ms`, `--notchset-node-blink`, `--notchset-node-bloom`, `--notchset-node-delay`, `--notchset-plate-color`, `--notchset-rise-from`, `--notchset-rule`, `--notchset-scroll`, `--notchset-signal`, `--notchset-sweep-to`). Never add Tailwind colour classes inside the component.

```tsx
import { RadioCard, RadioCards } from "@/components/ui/notchset/radio-cards";
```

## Parts

| Part | data-slot | What it is for |
|---|---|---|
| `RadioCards` | `radio-cards` | The grid. |
| `RadioCard` | `radio-card` | A card. |

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 `SoundProvider` once (install: `npx shadcn@latest add https://beautiful-ui.dev/r/notchset-sound.json`, import from `@/components/ui/notchset/sound-provider`); `useSound()` gives `muted` and `setMuted` for a mute control. Without a provider the audio engine never loads.

## Match the original
- Read `components/ui/notchset/radio-cards.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
- radio cards, plan cards, option cards, choice cards, tier picker, Notchset
- Picking a plan, region or deployment where each option has a price

### Not when
- Plain choices: use Radio Group

## Mistakes
- Use onDisabledPick to say why an option is off

## Usage

```tsx
"use client";

import * as React from "react";
import { RadioCard, RadioCards } from "@/components/ui/notchset/radio-cards";

export function RunnerTier() {
  const [env, setEnv] = React.useState("shared");
  return (
    <RadioCards value={env} onValueChange={setEnv}>
      <RadioCard value="shared" name="Shared" meta="P50 1.9S" price="$0.0007" unit="/ RUN" />
      <RadioCard value="dedicated" name="Dedicated" meta="P50 1.1S" price="$0.0019" unit="/ RUN" />
    </RadioCards>
  );
}
```

## Props

| Prop | Type | Default | What it does |
|---|---|---|---|
| `RadioCards` | `as RadioGroup` |  | The grid (two columns, one on phones). |
| `RadioCard` | `{ name, meta?, description?, price?, unit?, onDisabledPick? } + item props` |  | A card. |

Full docs: https://beautiful-ui.dev/components/radio-cards

## Customising
- Colours: the component reads your shadcn tokens (`--background`, `--foreground`, `--border` …), refined by the `--notchset-*` tokens. The signal colour is `--notchset-signal` (it falls back to `--destructive`). Set tokens on `:root`, or on any container to retheme one area.
- 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 |
|---|---|
| Arrow keys | Move and select |

## Performance

- CSS only; one SVG rect per card.

## Responsive

- Two columns, one under 640px.

## Motion inventory

| Interaction | What moves |
|---|---|
| Select | The border traces itself (520ms), then the dot pops (320ms after 280ms) |

## Accessibility contract (preserve when editing)
- The Base UI or Radix radio group: arrows move and select
- Disabled cards are aria-disabled and skipped by the keys

## Install

```bash
npx shadcn@latest add @beautiful-ui-pro/radio-cards
```

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)

The notchset 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/notchset-foundation.json.