//Region 1
// Set pin numbers
const int buttonPin1 = 2;  // the number of the first pushbutton pin
const int buttonPin2 = 15;  // the number of the second pushbutton pin
const int ledPinred =  5;    // the number of the red LED pin (PWM capable)
const int ledPingreen =  18;  // the number of the green LED pin (PWM capable)
const int ledPinblue =  19;   // the number of the blue LED pin (PWM capable)

// Variables for storing the pushbutton states
int buttonState1 = 0;
int buttonState2 = 0;
int brightness = 0;  // Variable to store LED brightness (0 to 255)

//Region 2
void setup() {
  Serial.begin(115200);  
  // Initialize the pushbutton pins as input
  pinMode(buttonPin1, INPUT);
  pinMode(buttonPin2, INPUT);
  
  // Initialize the LED pins as output (PWM capable)
  pinMode(ledPinred, OUTPUT);
  pinMode(ledPingreen, OUTPUT);
  pinMode(ledPinblue, OUTPUT);
}

//Region 3
void loop() {
  // Read the state of the pushbutton values
  buttonState1 = digitalRead(buttonPin1);
  buttonState2 = digitalRead(buttonPin2);

  // Print button states to Serial Monitor
  //Serial.print("Button 1 state: ");
  //Serial.println(buttonState1);
  //Serial.print("Button 2 state: ");
  //Serial.println(buttonState2);
  
  // Gradually increase brightness for red LED when button 1 is pressed
  if (buttonState1 == HIGH) {
    for (brightness = 0; brightness <= 255; brightness++) {
      analogWrite(ledPinred, brightness);  // Adjust red LED brightness
      delay(10);  // Slow down the brightness change
      //Serial.println (buttonState1);
    }
  } else {
    analogWrite(ledPinred, 0);  // Turn red LED off
  }
  
  // Gradually increase brightness for green LED when button 2 is pressed
  if (buttonState2 == HIGH) {
    for (brightness = 0; brightness <= 100; brightness++) {
      analogWrite(ledPingreen, brightness);  // Adjust green LED brightness
      Serial.println (brightness);
      delay(100);  // Slow down the brightness change
      analogWrite(ledPingreen, 0);  // Turn green LED off
    }
  } else {
    analogWrite(ledPingreen, 0);  // Turn green LED off
     delay(1000);  // Slow down the brightness change
  }