# Bottom Sheet

> A token-driven modal bottom pane that slides up from the bottom edge with a combined translateY, opacity, and blur transition — an investing quick-trade panel with a stock ticker, quantity stepper, and Buy/Sell actions, fully design-system agnostic.

- Category: Dialog
- Frameworks: Vanilla, React + CSS, React + Tailwind
- Design system: Aperture
- Dark mode: yes
- Access: premium (Atheros AI Pass)
- Page: https://builder.atheros.ai/components/bottom-sheet
- Preview: https://d17nmjscumqk5d.cloudfront.net/builder/templates/tpl_builder_bottom_sheet/preview-1f69fe4cbd58.webp

## Features

- Modal pane fixed to the bottom edge, toggled by a trigger button
- Panel-slide entrance combining `transform`, `opacity`, and `blur` with separate open (400ms) and close (350ms) durations
- Stock ticker page with price and daily change indicator
- Quick-trade pane with a quantity stepper and live estimated total
- Buy and Sell actions on the paired semantic success and error roles
- Visible Apple system blue accent decoupled from the focus-ring primary
- Escape key dismisses the open pane
- Responsive layout down to 280px, fully respecting `prefers-reduced-motion`

## Accessibility

- **Dialog role** — `role="dialog"` with `aria-modal="true"` and `aria-label` on the pane, `inert` while closed
- **Trigger wiring** — `aria-expanded` and `aria-controls` on the trigger, synced by JS
- **Button labels** — Every control carries an explicit `aria-label`
- **Focus management** — Focus moves into the pane on open, Tab is trapped inside, and returns to the trigger on close
- **Escape to close** — The Escape key closes the open pane
- **Focus indicators** — `:focus-visible` with a `--primary` outline on all interactive elements
- **Reduced motion** — `prefers-reduced-motion: reduce` disables all animations

## Keyboard shortcuts

- `Enter` — Activate the focused trigger or button
- `Space` — Activate the focused button
- `Escape` — Close the open pane
- `Tab` — Cycle focus through the pane controls while open

## Common questions

**Which frameworks is Bottom Sheet available in?**

Bottom Sheet ships as Vanilla, React + CSS and React + Tailwind — HTML, CSS, JS and React source you can copy, download or clone into Atheros AI Builder.

**Is the Bottom Sheet dialog component free?**

Bottom Sheet is a premium component. Anyone can preview it; the source, downloads and AI customisation are included with Atheros AI Pass.

**Does Bottom Sheet support dark mode?**

Yes. Bottom Sheet ships light and dark themes, both drawn from the Aperture design system's tokens. Switch the preview to dark mode to compare them.

## Get the code

Preview Bottom Sheet live, then sign in to copy or download the source, apply another design system, or ask the AI assistant to change it: https://builder.atheros.ai/components/bottom-sheet

Every component on https://builder.atheros.ai is also reachable from Claude Code, Cursor and Codex through the Atheros MCP server (paid plans). Component index: https://builder.atheros.ai/llms-components.txt