## Purpose

Define a standardized card layout so content cards across surfaces look consistent.

## Requirements

### Requirement: Standard card information architecture
All content cards rendered by the site MUST use a standardized layout so cards across different surfaces look consistent.

The standard card layout MUST be:
- featured image displayed prominently at the top (when available), with a shimmer placeholder visible while the image loads
- title
- summary/excerpt text, trimmed to a fixed maximum length
- footer row showing:
  - publish date on the left
  - views when available (if omitted, the footer MUST still render cleanly)
  - the content source label (e.g., `youtube`, `podcast`, `blog`)

If a field is not available (for example, views for some sources), the card MUST still render cleanly with that field omitted.

For content cards with source `youtube` or `podcast`, the card MUST render as a clickable element that opens a media modal dialog instead of navigating to an external URL. The card MUST NOT render as an outbound `<a>` link for these sources.

For content cards with other sources (e.g., `blog`, `instagram`), the card MUST continue to render as a navigational link (the existing behavior).

The card element for modal-trigger cards MUST carry the content item's data (id, source, url, title, summary, publishedAt, thumbnailUrl, views) as `data-*` attributes so the modal script can access them.

#### Scenario: Card renders with all fields
- **WHEN** a content item has an image, title, summary, publish date, views, and source
- **THEN** the card renders those fields in the standard card layout order

#### Scenario: Card renders without views
- **WHEN** a content item has no views data
- **THEN** the card renders the footer bar with date + source and omits views without breaking the layout

#### Scenario: Card renders without featured image
- **WHEN** a content item has no featured image
- **THEN** the card renders a placeholder media area and still renders the remaining fields

#### Scenario: Card image shows shimmer while loading
- **WHEN** a content item has an image URL and the image has not yet loaded
- **THEN** the card media area displays an animated shimmer placeholder until the image loads and fades in

#### Scenario: Card image load failure shows static placeholder
- **WHEN** a content item has an image URL but the image fails to load
- **THEN** the card media area displays a static placeholder (no broken image icon) and the card remains visually intact

#### Scenario: YouTube video card opens modal
- **WHEN** a user clicks a content card with source `youtube`
- **THEN** a media modal dialog opens with the video's embedded player and metadata instead of navigating to YouTube

#### Scenario: Podcast card opens modal
- **WHEN** a user clicks a content card with source `podcast`
- **THEN** a media modal dialog opens with the episode's embedded player (or metadata link) instead of navigating to the podcast platform

#### Scenario: Blog card still navigates
- **WHEN** a user clicks a content card with source `blog`
- **THEN** the card navigates to the blog post as an internal link (existing behavior, unaffected)