feat: scroll and system-messages styles

Author: nedhmn

apps/web/app/globals.css

@@ -1,3 +1,26 @@
 @import "tailwindcss";
 @import "@repo/tailwind-config";
 @import "@repo/ui/styles.css";
+
+/* Custom scrollbar styles */
+::-webkit-scrollbar {
+  width: 8px;
+}
+
+::-webkit-scrollbar-track {
+  background: transparent;
+}
+
+::-webkit-scrollbar-thumb {
+  background: #888;
+  border-radius: 4px;
+}
+
+::-webkit-scrollbar-thumb:hover {
+  background: #555;
+}
+
+/* System markdown styles */
+.system-message-styles p + p {
+  @apply mt-3;
+}