# Native Select

Style a native select while preserving platform behavior. (CSS only.)

Reference: https://timeless.build/docs/components/native-select/

> **Choosing between components.** Prefer Native Select. It is the platform control, so it needs no JavaScript and behaves correctly on every device. Choose [Select](/docs/components/select/) only when you need option markup the native control cannot render.

## Markup

```html
<div class="ui-field">
  <label class="ui-label" for="channel">Release channel</label>
  <div data-ui-part="control">
    <select class="ui-select" id="channel" name="channel">
      <option value="preview">Preview</option>
      <option value="stable" selected>Stable</option>
    </select>
    
  </div>
</div>
```

## Install

```js
import '@timelessui/components/css/tokens.css'
import '@timelessui/components/css/core/forms.css'
import '@timelessui/components/css/themes/atmosphere/tokens.css'
import '@timelessui/components/css/themes/atmosphere/forms.css'
```

## Anatomy

Parts are authored in your own markup and identified by the selector below. Required parts
must be present for the component to work. Private `data-ui-internal-*` hooks are written by
the runtime and must never be authored.

**ui-field**

| Part | Required | Selector | Purpose |
| --- | --- | --- | --- |
| `control` | No | `[data-ui-part~='control']` | Wrapper around the native control when one is needed. |

## Attributes

Every value below is implemented by the stylesheets this component ships. Boolean attributes
are presence-based: author the attribute with no value, or omit it.

**ui-select**

| Attribute | Values | Default | Description |
| --- | --- | --- | --- |
| `data-ui-size` | `sm` · `md` · `lg` | `md` | Control height, padding, font size, and the size of the drop-down indicator. |

**ui-field**

| Attribute | Values | Default | Description |
| --- | --- | --- | --- |
| `data-ui-layout` | `stacked` · `inline` | `stacked` | Whether the label sits above the control or beside it. |
| `data-ui-density` | `compact` · `normal` · `spacious` | `normal` | Gap between label, control, description, and error. |

## State

Native attributes, ARIA, and platform pseudo-classes are authoritative. Style state through
the selectors below rather than adding your own state classes.

| State | Source | How to express it |
| --- | --- | --- |
| `invalid` | native | Native `:invalid`, or `aria-invalid="true"`. |
| `disabled` | native | Native `disabled`. |
| `invalid` | aria | Set `aria-invalid="true"` on the control and point `aria-describedby` at the error part. |

## Styling

Root identity: `ui-select`, `ui-field`, `ui-label`.
Required stylesheets: `tokens.css`, `core/forms.css`, `themes/atmosphere/tokens.css`, `themes/atmosphere/forms.css`.

Set these custom properties to restyle the component:

| Custom property | Controls |
| --- | --- |
| `--ui-select-indicator` | Width of the drop-down indicator, which also sets the end padding reserved for it. Timeless draws the mark itself with `appearance: none`, because the platform arrow sits at a fixed engine-chosen offset no author padding moves, and WebKit drops `padding` and `min-block-size` on a UA-drawn select entirely. The mark is two gradient halves rather than an icon asset, so it follows `currentColor`; redeclare `background-image` to replace it. The drop-down list itself is still UA-drawn, which is what `color-scheme` on the control is for. |

Design tokens this component reads (26), global and set at the theme level: `--ui-accent`, `--ui-bg-control`, `--ui-bg-control-muted`, `--ui-bg-surface`, `--ui-bg-surface-subtle`, `--ui-danger`, `--ui-danger-soft`, `--ui-disabled-opacity`, `--ui-duration-fast`, `--ui-ease-standard`, `--ui-fg`, `--ui-fg-muted`, `--ui-fg-subtle`, `--ui-focus`, `--ui-line`, `--ui-line-strong`, `--ui-radius-md`, `--ui-radius-pill`, `--ui-radius-sm`, `--ui-shadow-control`, `--ui-shadow-inset`, `--ui-space-1`, `--ui-space-2`, `--ui-space-3`, `--ui-space-4`, `--ui-space-5`.

## Accessibility

Keep the native elements, roles, and relationships shown in the markup. Timeless adds only the
state and keyboard coordination the platform does not already provide, and it never supplies
your accessible names — those depend on your content.

This component declares no keyboard contract, because it has none of its own: the markup above
is native elements and native ARIA, and everything a keyboard or a screen reader does with it
comes from the platform. Nothing here manages focus, and nothing here adds a role you did not
author. So the accessibility of this component is the accessibility of the markup — which is why
the markup is the part worth copying exactly.

## Before JavaScript runs

This primitive is CSS only. There is nothing to register and nothing to wait for.