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TheFlow fa01644c17 feat(phase3): implement scroll animations with Intersection Observer 
SUMMARY:
Implemented Phase 3 Task 3.1: Scroll Animations system using Intersection
Observer API for smooth, performant scroll-triggered animations on homepage.

CHANGES:

1. Created scroll-animations.js (new):
   - Intersection Observer-based animation system
   - Supports 7 animation types (fade-in, slide-up/down/left/right, scale-in, rotate-in)
   - Staggered delays via data-stagger attribute
   - Respects prefers-reduced-motion
   - Auto-initializes, can be disabled globally
   - Custom 'scroll-animated' event for other components

2. Enhanced tractatus-theme.css:
   - Added 100+ lines of scroll animation CSS
   - Smooth transitions using CSS transforms (GPU-accelerated)
   - Data-attribute based animation selection
   - Default animation (slide-up) if none specified
   - Accessibility: respects prefers-reduced-motion

3. Updated index.html (homepage):
   - Added scroll-animations.js script
   - Value proposition: slide-up animation
   - Three audience cards: scale-in with 100/200/300ms stagger
   - Capabilities heading: fade-in
   - Six capability cards: slide-up with 100-600ms stagger
   - All animations trigger on scroll (not page load)

ANIMATION TYPES:
- fade-in: Opacity 0 → 1
- slide-up: Translates from bottom (+2rem) → 0
- slide-down: Translates from top (-2rem) → 0
- slide-left: Translates from right (+2rem) → 0
- slide-right: Translates from left (-2rem) → 0
- scale-in: Scales from 0.95 → 1 with opacity
- rotate-in: Rotates from 12deg → 0 with scale

USAGE EXAMPLE:
<div class="animate-on-scroll" data-animation="slide-up" data-stagger="200">
  Content here
</div>

ACCESSIBILITY:
✓ Respects prefers-reduced-motion (disables all animations)
✓ GPU-accelerated transforms (60fps on modern devices)
✓ Progressive enhancement (graceful degradation)
✓ Zero CSP violations maintained

PERFORMANCE:
- Intersection Observer (better than scroll listeners)
- Unobserves elements after animation (memory efficient)
- Supports data-animate-repeat for repeatable animations
- CSS transitions (GPU-accelerated)

UI_TRANSFORMATION_PROJECT_PLAN.md:
✓ Phase 3 Task 3.1.1: Implemented Intersection Observer
✓ Phase 3 Task 3.1.2: Added scroll animations to homepage

NEXT STEPS:
- Phase 3 Task 3.1.3: Apply to all pages site-wide
- Phase 3 Task 3.2: Interactive architecture diagram

🤖 Generated with Claude Code (https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>
2025-10-19 15:09:59 +13:00
..
.well-known security: comprehensive security audit and hardening 2025-10-10 05:34:40 +13:00
about style(ui): update theme, branding, and GitHub repository links 2025-10-19 12:48:29 +13:00
admin style(ui): update theme, branding, and GitHub repository links 2025-10-19 12:48:29 +13:00
css feat(phase3): implement scroll animations with Intersection Observer 2025-10-19 15:09:59 +13:00
demos style(ui): update theme, branding, and GitHub repository links 2025-10-19 12:48:29 +13:00
downloads docs: regenerate PDFs and update documentation metadata 2025-10-14 10:53:48 +13:00
fonts fix(csp): clean all public-facing pages - 75 violations fixed (66%) 2025-10-19 13:17:50 +13:00
images fix(csp): clean all public-facing pages - 75 violations fixed (66%) 2025-10-19 13:17:50 +13:00
js feat(phase3): implement scroll animations with Intersection Observer 2025-10-19 15:09:59 +13:00
koha fix(a11y): improve text contrast on koha transparency page 2025-10-19 14:07:38 +13:00
locales fix(i18n): resolve footer translation keys showing on non-homepage pages 2025-10-19 14:49:17 +13:00
about.html fix(csp): clean all public-facing pages - 75 violations fixed (66%) 2025-10-19 13:17:50 +13:00
api-reference.html style(ui): update theme, branding, and GitHub repository links 2025-10-19 12:48:29 +13:00
architecture.html fix(csp): clean all public-facing pages - 75 violations fixed (66%) 2025-10-19 13:17:50 +13:00
blog-post.html style(ui): update theme, branding, and GitHub repository links 2025-10-19 12:48:29 +13:00
blog.html style(ui): update theme, branding, and GitHub repository links 2025-10-19 12:48:29 +13:00
case-submission.html fix(csp): clean all public-facing pages - 75 violations fixed (66%) 2025-10-19 13:17:50 +13:00
check-version.html style(ui): update theme, branding, and GitHub repository links 2025-10-19 12:48:29 +13:00
docs-viewer.html style(ui): update theme, branding, and GitHub repository links 2025-10-19 12:48:29 +13:00
docs.html perf(docs): fix CLS and improve accessibility across pages 2025-10-19 14:04:33 +13:00
faq.html style(ui): update theme, branding, and GitHub repository links 2025-10-19 12:48:29 +13:00
favicon-new.svg fix(csp): clean all public-facing pages - 75 violations fixed (66%) 2025-10-19 13:17:50 +13:00
favicon.ico feat: implement Rule Manager and Project Manager admin systems 2025-10-11 17:16:51 +13:00
favicon.svg feat: comprehensive documentation improvements and GitHub integration 2025-10-09 14:33:14 +13:00
implementer.html perf(docs): fix CLS and improve accessibility across pages 2025-10-19 14:04:33 +13:00
index.html feat(phase3): implement scroll animations with Intersection Observer 2025-10-19 15:09:59 +13:00
koha.html style(ui): update theme, branding, and GitHub repository links 2025-10-19 12:48:29 +13:00
leader.html perf(docs): fix CLS and improve accessibility across pages 2025-10-19 14:04:33 +13:00
manifest.json style(ui): update theme, branding, and GitHub repository links 2025-10-19 12:48:29 +13:00
media-inquiry.html fix(csp): clean all public-facing pages - 75 violations fixed (66%) 2025-10-19 13:17:50 +13:00
media-triage-transparency.html style(ui): update theme, branding, and GitHub repository links 2025-10-19 12:48:29 +13:00
privacy.html fix(i18n): add cache-busting version strings to privacy page scripts 2025-10-19 14:56:25 +13:00
researcher.html fix(csp): clean all public-facing pages - 75 violations fixed (66%) 2025-10-19 13:17:50 +13:00
service-worker.js style(ui): update theme, branding, and GitHub repository links 2025-10-19 12:48:29 +13:00
version.json style(ui): update theme, branding, and GitHub repository links 2025-10-19 12:48:29 +13:00