- Replace all remaining 'transition: all' with specific token-based transitions
- Replace 80+ hardcoded box-shadow rgba values with semantic tokens
- Add new tokens: --shadow-side, --shadow-elevated, --shadow-dialog, --shadow-inset-top
- Update dark theme overrides for new shadow tokens
- 32 files changed, net +8 lines (more consistent, less duplication)
- Add MediaViewer overlay for full-size image/video display with prev/next
navigation, direction keys, counter, and adjacent preloading
- Recipe modal: click preview image/video opens full-size viewer
- Model showcase: click any example image/video opens viewer with full
gallery navigation; blurred NSFW content opens directly to clear view
- Use Map<Element, number> for DOM-index mapping instead of URL comparison
to avoid index mismatch from lazy-loaded vs data-attribute URLs
