fix: use CSS zoom on wrapper to eliminate footer gap

Switched from transform: scale() to CSS zoom property on zoom-wrapper.
CSS zoom changes actual layout space, not just visual rendering:
- At 50% zoom, wrapper takes 50% space (no reserved empty space)
- Footer naturally follows right after zoomed content
- At 200% zoom, content extends beyond viewport with scrolling
- Fixes the large gray gap between content and footer

static/css/main.css

@@ -493,9 +493,8 @@ iconify-icon {
 
 /* Zoom Wrapper - wraps cv-container for zoom functionality */
 .zoom-wrapper {
-    transform-origin: top center; /* Scale from top center */
-    transition: transform 0.08s linear; /* Smooth zoom response */
-    will-change: transform; /* Optimize for transforms */
+    /* CSS zoom property changes actual layout space (not just visual) */
+    /* This allows footer to naturally position right after zoomed content */
 }
 
 /* Main CV Container */