# CTA Section (Lumen Halo): prompt.md (v1.0.0)

- id: `lumen-cta-section` · version 1.0.0 · block · pro (Pro)
- category: Marketing
- build: Base UI (one set of files; its dependencies follow the build)
- install (this build): `npx shadcn@latest add @beautiful-ui-pro/lumen-cta-section`
- npm dependencies: none
- registry dependencies: utils, @beautiful-ui/lumen-button, @beautiful-ui/lumen-input, https://beautiful-ui.dev/r/lumen-foundation.json
- docs: https://beautiful-ui.dev/components/lumen-cta-section
- The install command carries everything this item needs (files, CSS, tokens, npm and registry dependencies). Prefer it to copying source by hand.

The closing ask at the end of a page: a headline, one line and either two actions or an email field that signs people up in place, with progress on the button and a thank-you in the same spot. A faint lit grid behind it, quiet enough for any page.

## Build it
- Stack: React 19 (`ref` is a plain prop), TypeScript, Tailwind CSS v4 utilities, a shadcn-initialised project with the `@/*` alias.
- Packages: none beyond React.
- Files: `components/ui/lumen/blocks/cta-section.tsx`.
- Registry dependencies, installed with it automatically: shadcn `utils` (cn), `lumen-button`, `lumen-input`, `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: `CtaSection`, 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-foreground`, `--lumen-accent-text`, `--lumen-bad`, `--lumen-bad-text`, `--lumen-chart-accent`, `--lumen-chart-accent-foreground`, `--lumen-chart-accent-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-sans`, `--lumen-radius-k`. Never add Tailwind colour classes inside the component.

```tsx
import { CtaSection } from "@/components/ui/lumen/blocks/cta-section";
```

## Parts

| Part | data-slot | What it is for |
|---|---|---|
| `CtaSection` | `cta-section` | The words, the actions or signup, and the note. |

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/blocks/cta-section.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
- call to action, CTA section, newsletter signup, waitlist, early access form, get started banner, closing section
- The last section of a landing page
- A waitlist or newsletter signup

### Not when
- A full contact form: use Contact Section
- The top of the page: use a hero

## Mistakes
- Confirm the email on your side (double opt-in) where the law asks for it
- Keep it to one ask; two filled buttons compete

## Usage

```tsx
"use client";
import { CtaSection } from "@/components/ui/lumen/blocks/cta-section";

export function Closing() {
  return (
    <>
      <CtaSection title="Ready when you are" description="Start free; bring your team when it clicks." primary={{ label: "Start free", href: "/signup" }} secondary={{ label: "Talk to sales", href: "/contact" }} note="No card needed." />
      <CtaSection
        layout="split"
        title="Get the monthly digest"
        description="One email a month with what shipped."
        onSubscribe={async (email) => {
          const res = await fetch("/api/subscribe", { method: "POST", headers: { "Content-Type": "application/json" }, body: JSON.stringify({ email }) });
          if (!res.ok) throw new Error("Couldn't add you. Try again.");
        }}
        note="Unsubscribe any time."
      />
    </>
  );
}
```

## Props

| Prop | Type | Default | What it does |
|---|---|---|---|
| `title / description` | `ReactNode / ReactNode` |  | The headline and its line. |
| `primary / secondary` | `{ label, href?, onClick? }` |  | Two actions; the primary is filled. With href they render as links. |
| `onSubscribe` | `(email) => Promise<void>` |  | An email signup instead of actions. Resolve when they're on the list; throw to show the error. |
| `note` | `ReactNode` |  | Small print under the form or actions. |
| `layout` | `"center" \| "split"` | `"center"` | Centred, or words left and actions right (stacks under 720px). |
| `labels` | `{ email?, subscribe?, subscribing?, done?(email), badEmail? }` |  | Words, for i18n. |

Full docs: https://beautiful-ui.dev/components/lumen-cta-section

## Customising
- Phones: below 720px it switches to its phone layout in CSS. Force one with `layout="desktop"` or `layout="mobile"`.
- 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 |
|---|---|
| Tab | The actions, or the email field and its button |
| Enter | Sign up |

## Performance

- Static; the grid is a CSS background

## Responsive

- Type and padding scale with the container; split stacks under 720px; the email row stacks under 420px

## Motion inventory

| Interaction | What moves |
|---|---|
| Signed up | The form gives way to the thank-you in place |

## Accessibility contract (preserve when editing)
- A labelled section; the email field has a label (visually hidden, the placeholder isn't the label)
- A bad address or a failed signup is announced (role alert) and tied to the field; the thank-you is a status message
- Link actions render as real links

## Install

```bash
npx shadcn@latest add @beautiful-ui-pro/lumen-cta-section
```

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.

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.