fix: dynamic page height on zoom and footer spacing improvements

Fixed two issues with zoom and footer:

1. Dynamic height adjustment based on zoom level:
   - Store original height on first zoom (dataset.originalHeight)
   - Calculate scaled height: originalHeight × scale factor
   - Set container height dynamically to match visual content
   - Example: 50% zoom → height = originalHeight × 0.5
   - Prevents empty space below content at low zoom
   - Prevents overflow at high zoom

2. Footer spacing and positioning:
   - Reduced .cv-main bottom padding: 3rem → 1rem
   - Added .cv-footer margin-top: -60px to pull footer up
   - Increased .zoom-control bottom: 70px → 100px
   - Zoom control now clears footer GitHub link

Result:
- Footer appears immediately after content at any zoom level
- No wasted empty space below content
- Zoom control doesn't overlap GitHub link
- Page height dynamically adapts to zoom level

static/css/main.css

@@ -733,7 +733,7 @@ iconify-icon {
 /* Main Content - Right column */
 .cv-main {
     background: var(--paper-white);
-    padding: 3rem 2.5rem;
+    padding: 3rem 2.5rem 1rem 2.5rem; /* Reduced bottom padding to minimize footer space */
 }
 
 /* Professional Title Badges - Spans Both Columns */
@@ -1696,6 +1696,7 @@ a:focus {
     color: #ccc;
     padding: 20px 0;
     margin: 0;
+    margin-top: -60px; /* Move footer up to reduce space and clear zoom control */
     grid-column: 1 / -1; /* Span all columns */
 }
 
@@ -3468,7 +3469,7 @@ html {
 
 .zoom-control {
     position: fixed;
-    bottom: 70px;
+    bottom: 100px; /* Increased from 70px to clear footer */
     left: 50%;
     transform: translateX(-50%);
     z-index: 900;