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PRODUCTION THEME NOTCH STYLING ISSUE - EXECUTIVE SUMMARY
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ISSUE: Theme notch appears as plain buttons in normal document flow on production
       (https://santhoshj.com) instead of a fixed, positioned element in the 
       top-right corner with a dropdown panel.

ROOT CAUSE: Production server is serving a STALE CSS file (17,628 bytes) that
            was built BEFORE the theme-notch CSS rules were added. The local
            build correctly generates a 24,279 byte CSS file with all rules.

SEVERITY: CRITICAL - Component is completely unstyled and non-functional

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EVIDENCE SUMMARY
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1. CSS FILE SIZE MISMATCH
   Local build:      24,279 bytes ✅ (includes theme-notch rules)
   Production:       ~17,628 bytes ❌ (missing theme-notch rules)
   Difference:       ~6,651 bytes (27% smaller)

2. THEME-NOTCH RULES
   Local CSS:        30 matches for "theme-notch" ✅
   Production CSS:   0 matches for "theme-notch" ❌

3. COMPUTED STYLES ON PRODUCTION
   .theme-notch position:     static (WRONG - should be: fixed)
   .theme-notch top:          auto (WRONG - should be: 84px)
   .theme-notch right:        auto (WRONG - should be: max(8px, env(...)))
   .theme-notch z-index:      auto (WRONG - should be: 12)
   .theme-notch-panel display: block (WRONG - should be: grid)
   .theme-notch-panel opacity: 1 (WRONG - should be: 0 initially)

4. HTML MARKUP
   ✅ Present and correct on both local and production
   ✅ All classes and attributes in place
   ✅ SVG glyph present

5. JAVASCRIPT EXECUTION
   ✅ Inline scripts ARE executing (no CSP block)
   ✅ Theme initialization script runs
   ✅ No JavaScript errors related to theme-notch

6. NETWORK & CACHING
   ✅ /styles/global.css returns [200] OK
   ✅ File loads successfully
   ❌ Content is stale/outdated

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WHAT'S WORKING
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✅ HTML markup is present and correct
✅ JavaScript is executing without CSP errors
✅ Local development (npm run dev) works perfectly
✅ Local build (npm run build) generates correct CSS
✅ Network requests succeed
✅ Accessibility tree shows correct structure

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WHAT'S BROKEN
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❌ Production CSS file is missing theme-notch rules
❌ CSS file size doesn't match local build
❌ Theme notch appears inline instead of fixed position
❌ Theme notch dropdown panel is not hidden initially
❌ Theme notch styling is completely absent

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ROOT CAUSE ANALYSIS
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The production Docker image contains an OLDER version of the CSS file that was
built BEFORE the theme-notch CSS rules were added to the source.

This is a DEPLOYMENT/CACHING issue, not a build issue.

Possible causes:
1. Docker image was built from an older commit
2. CSS file was not updated in the Docker image
3. Stale build artifact is being served
4. CI/CD pipeline didn't rebuild the image with latest source

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VERIFICATION PERFORMED
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✅ Navigated to https://santhoshj.com and /blog
✅ Captured console errors and warnings
✅ Checked network requests (global.css loads with [200])
✅ Fetched and parsed production CSS file
✅ Searched for .theme-notch selectors (0 matches found)
✅ Inspected computed styles via browser DevTools
✅ Verified HTML markup is present and correct
✅ Confirmed inline scripts execute without CSP errors
✅ Compared with local source CSS (rules present locally)
✅ Ran local build and verified CSS includes theme-notch rules
✅ Compared file sizes (24,279 bytes local vs ~17,628 bytes production)

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RECOMMENDED FIX
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OPTION 1: Rebuild and redeploy Docker image
  $ docker compose build --no-cache
  $ docker compose push
  # Deploy new image to production

OPTION 2: If using CI/CD
  - Ensure latest commit is being built
  - Verify Docker build includes latest site/dist/ output
  - Check image is pushed with correct tag
  - Redeploy image to production

OPTION 3: Quick verification before deploying
  - SSH into production server
  - Check CSS file size: should be ~24,279 bytes (not ~17,628)
  - Verify /styles/global.css contains "theme-notch" (30+ matches)
  - If not, redeploy the Docker image

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EXPECTED RESULT AFTER FIX
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✅ Theme notch appears as a fixed button in top-right corner
✅ Clicking reveals a dropdown panel with Dark/Light/Contrast options
✅ Smooth animations and hover effects work
✅ CSS file size matches local build (~24,279 bytes)
✅ CSS file contains 30+ matches for "theme-notch"
✅ Computed styles show correct positioning and display properties

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FILES INVOLVED
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Source:      site/public/styles/global.css (lines 306-457)
Production:  https://santhoshj.com/styles/global.css (missing rules)
Build:       Dockerfile and npm run build process
HTML:        site/src/components/BaseLayout.astro (renders theme-notch markup)
Local dist:  site/dist/styles/global.css (24,279 bytes - CORRECT)

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CONCLUSION
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The issue is NOT:
  ❌ CSP blocking inline scripts
  ❌ Missing HTML markup
  ❌ JavaScript not executing
  ❌ Browser caching

The issue IS:
  ✅ Production CSS file missing .theme-notch rules
  ✅ Stale Docker image serving outdated CSS
  ✅ Deployment/caching issue, not a build issue

ACTION REQUIRED: Rebuild and redeploy Docker image with latest source code.

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