/* ============================================================
PMPWS V7 — Void Intro Overlay
File: assets/css/void-intro.css
Version: 4.1
Date: 2026-05-05
Owner: Bravo 1
Pure CSS. Zero JavaScript. 14-second sequenced overlay.
Loads on V7 index.html as decorative aria-hidden intro.
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for UAT only: externalise to /assets/css/ for CSP
- aria-hidden=true: decorative, screen-reader transparent
- prefers-reduced-motion respected
- No localStorage/cookies: GDPR clean for this component
- Image content-security: backdrop-image is same-origin
- SVG: not used in this build (photographic approach)
CLAUDE CODE HANDOFF — UAT acceptance criteria:
[ ] Backdrop image loads cleanly, no 404s
[ ] Image licence verified or swapped to public-domain source
[ ] Backdrop applies Ken Burns slow zoom + drift (~24s cycle)
[ ] Supplemental parallax stars visible above photo
[ ] Hero stars show 4-point diffraction spikes
[ ] Quote fades in at 3.5s, readable, halo glow visible
[ ] Attribution at 9s, gold colour, hairline rule between halves
[ ] Overlay dismisses cleanly at 14s
[ ] V7 home content interactive after dismiss
[ ] Reduced-motion mode preserves message beats
[ ] No console errors
[ ] Lighthouse score ≥95 Best Practices
[ ] LCP not impacted (overlay is decorative, post-load)
Traceability: UI-021 Void Galactic Intro Overlay
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PMPWS — The Void