int buttonPin = 2;
int led1 = 8;
int led2 = 12;
int led3 = 13;

unsigned long pressStart = 0;

void setup() {
  pinMode(buttonPin, INPUT_PULLUP); 
  pinMode(led1, OUTPUT);
  pinMode(led2, OUTPUT);
  pinMode(led3, OUTPUT);

  digitalWrite(led1, LOW);
  digitalWrite(led2, LOW);
  digitalWrite(led3, LOW);
}

void loop() {
  bool buttonState = digitalRead(buttonPin) == LOW; 

  if (buttonState) {
    if (pressStart == 0) {
      pressStart = millis();
    }

    unsigned long pressDuration = millis() - pressStart;

    // Matikan semua LED dulu
    digitalWrite(led1, LOW);
    digitalWrite(led2, LOW);
    digitalWrite(led3, LOW);

    if (pressDuration < 2000) {
      digitalWrite(led1, HIGH); // LED merah
    } else if (pressDuration < 4000) {
      digitalWrite(led2, HIGH); // LED kuning
    } else {
      digitalWrite(led3, HIGH); // LED hijau
    }

  } else {
    pressStart = 0;
    digitalWrite(led1, LOW);
    digitalWrite(led2, LOW);
    digitalWrite(led3, LOW);
  }
}