diff --git a/src/main/java/workshop/Controller.java b/src/main/java/workshop/Controller.java
index 3092fab..2457a08 100644
--- a/src/main/java/workshop/Controller.java
+++ b/src/main/java/workshop/Controller.java
@@ -1,39 +1,95 @@
 package workshop;
 
 import javafx.fxml.FXML;
+import javafx.scene.Scene;
+import javafx.scene.control.Alert;
 import javafx.scene.control.Label;
 import javafx.scene.control.Button;
 
 public class Controller {
     @FXML private Label titleLabel;
     @FXML private Button themeToggle;
-
+    @FXML private Label basicPriceLabel;
+    @FXML private Label proPriceLabel;
+    @FXML private Label enterprisePriceLabel;
     private boolean isDark = true;
 
-    // TODO: (Optional) Create initialize function and use it to set prices during runtime.
+    //prices
+    private int basicPrice = 10;
+    private int proPrice = 20;
+    private int enterprisePrice = 30;
 
+    private int clickCount = 0;
+
+    // TODO: (Optional:For Practice) Create initialize function and use it to set prices during runtime.
+    @FXML
+    public void initialize() {
+        //set prices during runtime
+        basicPriceLabel.setText("$" + basicPrice);
+        proPriceLabel.setText("$" + proPrice);
+        enterprisePriceLabel.setText("$" + enterprisePrice);
+    }
+
+    // TODO: (Optional:For Practice) Make the plan price go 1 dollar up each time user clicks on the shop button.
     @FXML
     private void buyBasic() {
-        // TODO: Call showAlert() with a message indicating the user entered the payment gateway
+        showAlert("You have entered the payment gateway for Basic Plan ($" + basicPrice + ")");
+        increasePrices();
+    }
+
+    private void increasePrices() {
+        clickCount++;
+
+        //After every 3 clicks, prices increase by $1.
+        if (clickCount % 3 == 0) {
+            basicPrice++;
+            proPrice++;
+            enterprisePrice++;
+
+            //updating labels
+            basicPriceLabel.setText("$" + basicPrice);
+            proPriceLabel.setText("$" + proPrice);
+            enterprisePriceLabel.setText("$" + enterprisePrice);
+        }
     }
 
     @FXML
     private void buyPro() {
-        // TODO: Call showAlert() with a message indicating the user entered the payment gateway
+        showAlert("You have entered the payment gateway for Pro Plan ($" + proPrice + ")");
+        increasePrices();
     }
 
     @FXML
     private void buyEnterprise() {
-        // TODO: Call showAlert() with a message indicating the user entered the payment gateway
+        showAlert("You have entered the payment gateway for Enterprise Plan ($" + enterprisePrice + ")");
+        increasePrices();
     }
 
     @FXML
     private void toggleTheme() {
-        // TODO: Toggle the isDark flag. If dark, switch to style.css and set button text to "Switch to Light Mode"
-        // TODO: If light, switch to light.css and set button text to "Switch to Dark Mode"
+        //Get Scene from any Node (themeToggle)
+        Scene scene = themeToggle.getScene();
+
+        if (isDark) {
+            //Light Mode
+            scene.getStylesheets().clear();
+            scene.getStylesheets().add(getClass().getResource("light.css").toExternalForm());
+            themeToggle.setText("Switch to Dark Mode");
+            isDark = false;
+        } else {
+            //Dark Mode
+            scene.getStylesheets().clear();
+            scene.getStylesheets().add(getClass().getResource("style.css").toExternalForm());
+            themeToggle.setText("Switch to Light Mode");
+            isDark = true;
+        }
     }
 
     private void showAlert(String message) {
-        // TODO: Create a new Alert of type INFORMATION with the given message and display it
+        Alert alert = new Alert(Alert.AlertType.INFORMATION);
+        alert.setTitle("Payment Gateway");
+        alert.setHeaderText("Purchase Confirmation");
+        alert.setContentText(message);
+        alert.showAndWait();
     }
-}
+}
\ No newline at end of file
diff --git a/src/main/java/workshop/Launcher.java b/src/main/java/workshop/Launcher.java
index 0f82aeb..8383669 100644
--- a/src/main/java/workshop/Launcher.java
+++ b/src/main/java/workshop/Launcher.java
@@ -6,4 +6,4 @@ public class Launcher {
     public static void main(String[] args) {
         // TODO: Launch the JavaFX application by calling Application.launch(Main.class)
     }
-}
+}
\ No newline at end of file
diff --git a/src/main/java/workshop/Main.java b/src/main/java/workshop/Main.java
index d6cd3fd..83a75e6 100644
--- a/src/main/java/workshop/Main.java
+++ b/src/main/java/workshop/Main.java
@@ -1,13 +1,28 @@
 package workshop;
 
 import javafx.application.Application;
+import javafx.fxml.FXMLLoader;
+import javafx.scene.Parent;
+import javafx.scene.Scene;
 import javafx.stage.Stage;
 
 public class Main extends Application {
     @Override
     public void start(Stage stage) throws Exception {
         // TODO: Load the FXML file using FXMLLoader.load() and get the Parent root
+        Parent root = FXMLLoader.load(getClass().getResource("sample.fxml"));
+
         // TODO: Create a Scene with the root (width=750, height=450) and add the stylesheet "style.css"
+        Scene scene = new Scene(root, 750, 450);
+        scene.getStylesheets().add(getClass().getResource("style.css").toExternalForm());
+
         // TODO: Set the stage title to "Pricing Plans", set the scene, and call stage.show()
+        stage.setTitle("Pricing Plans");
+        stage.setScene(scene);
+        stage.show();
     }
-}
+
+    public static void main(String[] args) {
+        launch(args);
+    }
+}
\ No newline at end of file