Fix header links and glitch effect click blocking

- Add pointer-events: none to glitch pseudo-elements
- Add z-index and position to nav-links for reliable clicking
- Add cursor: pointer to nav links

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

index.html

@@ -160,6 +160,13 @@
             gap: 2rem;
             list-style: none;
             align-items: center;
+            position: relative;
+            z-index: 10;
+        }
+
+        .nav-links li {
+            position: relative;
+            z-index: 10;
         }
 
         .nav-links a {
@@ -167,6 +174,9 @@
             text-decoration: none;
             font-size: 0.9rem;
             transition: color 0.3s;
+            cursor: pointer;
+            position: relative;
+            z-index: 10;
         }
 
         .nav-links a:hover {
@@ -244,6 +254,7 @@
             width: 100%;
             height: 100%;
             opacity: 0;
+            pointer-events: none;
         }
 
         .glitch:hover::before {