Move profile avatar styles to global CSS with original fill

Changes:
- Moved .profile-avatar styles from Browse.vue to src/style.css
- Restored original gradient fill: orange (#f97316) to pink (#ec4899)
- Kept gradient border treatment
- Added z-index to span for proper layering
- Now available globally for reuse

Co-authored-by: Cursor <cursoragent@cursor.com>

src/style.css

@@ -146,3 +146,39 @@ body {
   background-size: 1000px 100%;
   animation: shimmer 2s infinite;
 }
+
+/* Profile Avatar with Gradient Border */
+.profile-avatar {
+  position: relative;
+  width: 32px;
+  height: 32px;
+  border-radius: 50%;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  font-size: 14px;
+  font-weight: 600;
+  color: white;
+  background: linear-gradient(to bottom right, #f97316, #ec4899);
+}
+
+.profile-avatar span {
+  position: relative;
+  z-index: 1;
+}
+
+.profile-avatar::before {
+  content: '';
+  position: absolute;
+  inset: 0;
+  border-radius: inherit;
+  padding: 2px;
+  background: linear-gradient(135deg, rgba(255, 255, 255, 0.8), rgba(245, 37, 50, 0.6));
+  -webkit-mask: 
+    linear-gradient(#fff 0 0) content-box, 
+    linear-gradient(#fff 0 0);
+  -webkit-mask-composite: xor;
+  mask-composite: exclude;
+  pointer-events: none;
+}
+