Update requirements and enhance CSS styles

- Added new dependencies to requirements.txt: psycopg2-binary, pandas, and dotenv for improved functionality.
- Enhanced main.css by adding 'scroll-smooth' to the html element for better scrolling experience.

styles/main.css

@@ -4,7 +4,7 @@
 
 @layer base {
   html {
-    @apply bg-black;
+    @apply bg-black scroll-smooth;
   }
   body {
     @apply bg-black m-0 p-0 min-h-screen text-white;