const int btnBlue = 11;
const int btnGreen = 12;
const int ledBlue = 3;
const int ledGreen = 2;

int prevBtnBlueState = LOW;

void setup() {
  pinMode(btnBlue, INPUT);
  pinMode(btnGreen, INPUT);
  pinMode(ledBlue, OUTPUT);
  pinMode(ledGreen, OUTPUT);
}

void loop() {
  handleButtonToggle(btnBlue, ledBlue);
  handleButtonState(btnGreen, ledGreen);
}

void handleButtonToggle(int buttonPin, int ledPin) {
  int buttonState = digitalRead(buttonPin);

  if (buttonState == LOW && prevBtnBlueState == HIGH) {
    digitalWrite(ledPin, !digitalRead(ledPin));
  }

  prevBtnBlueState = buttonState;
}

void handleButtonState(int buttonPin, int ledPin) {
  int buttonState = digitalRead(buttonPin);
  digitalWrite(ledPin, buttonState == HIGH);
}