const int redPin = 9;
const int greenPin = 10;
const int bluePin = 11;

const int buttonRedPin = 2;
const int buttonGreenPin = 3;
const int buttonBluePin = 4;

const int buttonPressDuration = 500;
bool isRedOn = false;
bool isGreenOn = false;
bool isBlueOn = false;

void setup() {
  pinMode(redPin, OUTPUT);
  pinMode(greenPin, OUTPUT);
  pinMode(bluePin, OUTPUT);

  pinMode(buttonRedPin, INPUT_PULLUP);
  pinMode(buttonGreenPin, INPUT_PULLUP);
  pinMode(buttonBluePin, INPUT_PULLUP);
  updateLED();
}

void loop() {
  bool redButtonState = digitalRead(buttonRedPin) == LOW;
  bool greenButtonState = digitalRead(buttonGreenPin) == LOW;
  bool blueButtonState = digitalRead(buttonBluePin) == LOW;

  if (redButtonState) {
    isRedOn = !isRedOn;
    delay(buttonPressDuration); 
  }
  if (greenButtonState) {
    isGreenOn = !isGreenOn;
    delay(buttonPressDuration); 
  }
  if (blueButtonState) {
    isBlueOn = !isBlueOn;
    delay(buttonPressDuration); 
  }
  updateLED();
}

void updateLED() {
  analogWrite(redPin, isRedOn ? 255 : 0);
  analogWrite(greenPin, isGreenOn ? 255 : 0);
  analogWrite(bluePin, isBlueOn ? 255 : 0);
}