refactor: enhance movie details and UI components for better user experience

src/components/molecules/MovieCast/index.tsx

@@ -86,6 +86,17 @@ export const MovieCast: FC<Props> = ({ movieDetails }) => {
                       </span>
                     </div>
                   )}
+                  {movieDetails.budget > 0 && movieDetails.revenue > 0 && (
+                    <div className="flex items-center gap-2">
+                      <FaDollarSign className="text-green-400" />
+                      <span className="text-gray-400">Zysk:</span>
+                      <span className="text-white">
+                        {formatCurrency(
+                          movieDetails.revenue - movieDetails.budget
+                        )}
+                      </span>
+                    </div>
+                  )}
                 </div>
               </div>
             )}