Changed zoom behavior from "page-relative" to "viewport-relative":
Before:
- Zoomed from top of page causing perspective/depth effect
- Content appeared to move "through" the viewer
- Disorienting experience when scrolled down
After:
- Zooms from center of YOUR viewport (where you're looking)
- Content expands both above and below your position
- You stay at your original viewing point - no movement
- Like pinch-to-zoom: magnifies what you're currently viewing
Technical implementation:
1. Calculate viewport center relative to page (scrollTop + viewportHeight/2)
2. Convert to percentage of page height
3. Set transform-origin dynamically to that percentage
4. Apply scale transform from your viewing position
5. Adjust scroll to keep same content at viewport center
CSS changes:
- Default transform-origin: center center (was top center)
- Added transition for transform-origin: 0s (instant, no animation)
- Maintains smooth 0.08s linear transform transition
Result: Natural, stable zoom that feels like magnifying glass
juanatsap
fce7d7b27e