fix: change Draw card to pink gradient to match footer color

- Created new gradient-pink-rose utility (pink to rose)
- Updated Draw tool to use gradient-pink-rose instead of gradient-orange-pink
- Draw card now displays pink (#ec4899) matching footer link color
- Paint retains gradient-orange-pink for orange identity

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

app/globals.css

@@ -91,6 +91,10 @@ body {
   background: linear-gradient(135deg, #f97316 0%, #ec4899 100%);
 }
 
+@utility gradient-pink-rose {
+  background: linear-gradient(135deg, #ec4899 0%, #f43f5e 100%);
+}
+
 @utility gradient-green-teal {
   background: linear-gradient(135deg, #10b981 0%, #06b6d4 100%);
 }