fix: apply zoom to cv-container and footer to properly reduce document space

Changed zoom target from .cv-paper to .cv-container and .cv-footer to fix issue
where 50% zoom still reserved 100% document space creating empty areas. Both
elements now scale together, properly reducing space at low zoom levels while
keeping main action bar unaffected.

- Modified applyZoom() to target .cv-container and .cv-footer
- Added transform-origin, transition, and will-change to both CSS selectors
- Maintains proportional scroll compensation for smooth visual experience

static/css/main.css

@@ -498,6 +498,9 @@ iconify-icon {
     margin: 0 auto;
     padding: 20px 0 0 0; /* Top padding to prevent sticky action bar overlap */
     display: block; /* Changed from flex */
+    transform-origin: top center; /* Scale from top center - container stays anchored at top */
+    transition: transform 0.08s linear; /* Smooth, immediate zoom response */
+    will-change: transform; /* Hint browser to optimize for transforms */
 }
 
 /* Clean theme - no sidebars, centered content */
@@ -1697,6 +1700,9 @@ a:focus {
     padding: 20px 0;
     margin: 0;
     grid-column: 1 / -1; /* Span all columns */
+    transform-origin: top center; /* Scale from top center - footer stays anchored at top */
+    transition: transform 0.08s linear; /* Smooth, immediate zoom response */
+    will-change: transform; /* Hint browser to optimize for transforms */
 }
 
 .footer-content {