# Timeline Cards

> A project milestone timeline — the journey from idea to launch down a clean vertical rail with status nodes, annotated by cards with mono metric readings, teammate avatars, live status words, and expandable task checklists.

- Category: Card
- Frameworks: Vanilla, React + CSS, React + Tailwind
- Design system: Orchard
- Dark mode: yes
- Access: premium (Atheros AI Pass)
- Tags: timeline, progress, visualization
- Page: https://builder.atheros.ai/components/timeline-cards
- Preview: https://d17nmjscumqk5d.cloudfront.net/builder/templates/tpl_builder_timeline_cards/preview-63db7219665b.webp

## Features

- Strengthened readable roles follow `--cards-radius`, `--buttons-radius`, and theme-derived elevation; opening details synchronizes `aria-hidden` and `inert`.
- Continuous seismic trace drawn as SVG down a ruled recorder drum, rebuilt from live layout measurements
- Per-milestone event bursts whose zigzag amplitude scales with a Richter-style `magnitude` value
- Status-aware trace segments: recorded ink, a signal-colored writing segment ending in a blinking pen dot, and dashed queued segments
- Station header with an animated percent readout, a recorded-events caption, and a per-event tick meter
- Expandable channel checklists per event with a live `n/m` count on each toggle
- Fully respects `prefers-reduced-motion`

## Accessibility

- **Landmark structure** — Single `<main>` panel with an `<h1>` heading and an ordered list of events
- **Progress meter** — `role="img"` with a live `aria-label` announcing recorded counts
- **Channel toggles** — Native `<button>` with `aria-expanded`, `aria-controls`, and a status-aware `aria-label`
- **Operator tags** — `role="img"` with each operator's full name as `aria-label` and `title`
- **Decorative trace** — The SVG trace, drum, and magnitude chips are `aria-hidden`
- **Keyboard activation** — All actions use native buttons that respond to Enter and Space
- **Focus indicators** — `:focus-visible` with the `--ring` outline on all interactive elements
- **Reduced motion** — `prefers-reduced-motion: reduce` disables all animations and transitions

## Keyboard shortcuts

- `Enter` — Activate the focused button
- `Space` — Activate the focused button
- `Tab` — Move focus between interactive elements

## Common questions

**Which frameworks is Timeline Cards available in?**

Timeline Cards 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 Timeline Cards free?**

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

**Does Timeline Cards support dark mode?**

Yes. Timeline Cards ships light and dark themes, both drawn from the Orchard design system's tokens. Switch the preview to dark mode to compare them.

## Get the code

Preview Timeline Cards 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/timeline-cards

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