fix: simplify zoom to prevent empty space issues

The viewport-centered zoom approach was creating empty space above
the content when zooming to 50%, causing the CV to move down.

Solution: Simple top-anchored zoom
- Removed all complex scroll compensation logic
- Set transform-origin to "top center" (fixed position)
- Page now scales naturally from the top without movement
- No dynamic transform-origin calculations
- No scroll position adjustments

Result:
- Page stays anchored at top during zoom
- No empty space created above content
- Clean, predictable zoom behavior
- Works correctly at all zoom levels (50%-200%)

The page simply scales up/down from the top center point,
maintaining its position without any jumping or space issues.

static/css/main.css

@@ -551,8 +551,8 @@ iconify-icon {
     min-height: auto; /* Changed from 100vh */
 
     /* Zoom transform properties */
-    transform-origin: center center; /* Default origin, dynamically updated by JS to viewport center */
-    transition: transform 0.08s linear, transform-origin 0s; /* Smooth zoom, instant origin change */
+    transform-origin: top center; /* Scale from top center - page stays anchored at top */
+    transition: transform 0.08s linear; /* Smooth, immediate zoom response */
     will-change: transform; /* Hint browser to optimize for transforms */
 }