From 2ac69c77965b8c4a4ae2bccafef0eb54cfddff1b Mon Sep 17 00:00:00 2001
From: A Charlwood <andrew.charlwood@gmail.com>
Date: Tue, 10 Feb 2026 16:27:29 +0000
Subject: [PATCH] Update progress: Task 5 completed (FloatingNav component)

---
 Ralph/IMPLEMENTATION_PLAN.md |  2 +-
 Ralph/progress.txt           | 20 ++++++++++++++++++++
 2 files changed, 21 insertions(+), 1 deletion(-)

diff --git a/Ralph/IMPLEMENTATION_PLAN.md b/Ralph/IMPLEMENTATION_PLAN.md
index 2c7bede..d193f64 100644
--- a/Ralph/IMPLEMENTATION_PLAN.md
+++ b/Ralph/IMPLEMENTATION_PLAN.md
@@ -98,7 +98,7 @@ src/
   - Emit `onComplete` callback when animation finishes
   Use Framer Motion for path drawing animations (pathLength).
 
-- [ ] **Task 5: Build FloatingNav component**
+- [x] **Task 5: Build FloatingNav component**
 
   Create `components/FloatingNav.tsx`. Floating pill navigation bar fixed at top center. Links: About, Skills, Experience, Education, Projects, Contact. Active link tracking via `useActiveSection` hook (IntersectionObserver). Smooth scroll to sections on click. Responsive: horizontal scroll on mobile. Styling: white bg, rounded-full, shadow-md, teal active state with dot indicator.
 
diff --git a/Ralph/progress.txt b/Ralph/progress.txt
index a35c5b5..010eadc 100644
--- a/Ralph/progress.txt
+++ b/Ralph/progress.txt
@@ -24,6 +24,26 @@
 - RALPH_PROMPT.md updated with explicit /frontend-design skill requirement for all visual components
 - This progress.txt reset for new phase
 
+### Iteration 4 — Task 5: Build FloatingNav component
+- **Completed**: Task 5 - Build FloatingNav component
+- **Files created**:
+  - `src/hooks/useActiveSection.ts` - IntersectionObserver hook for tracking active nav section
+  - `src/components/FloatingNav.tsx` - Floating pill navigation with active tracking
+- **Files modified**:
+  - `src/index.css` - Added scrollbar-hide utility and smooth scroll behavior
+  - `src/App.tsx` - Integrated FloatingNav and added section IDs for scroll targets
+- **Design decisions**:
+  - Used IntersectionObserver with rootMargin '-20% 0px -70% 0px' for accurate section detection
+  - Framer Motion layoutId for smooth indicator dot animation between nav items
+  - Active section is the topmost visible section (sorted by DOM order)
+  - Navigation uses button elements for accessibility and proper click handling
+  - Smooth scroll behavior via CSS `scroll-behavior: smooth` on html element
+  - Responsive: horizontal scroll with hidden scrollbar on mobile
+- **Quality checks**: `npm run typecheck` ✓, `npm run lint` ✓, `npm run build` ✓
+- **Learnings**:
+  - IntersectionObserver thresholds array allows precise tracking of section visibility
+  - Using a ref to track visible sections prevents React re-render race conditions
+
   <!-- Iterations will be logged here as tasks are completed -->
   
 ### Iteration 3 — Task 4: Build ECGAnimation component