int buttonState = 0;
int lastButtonState = 0;
bool ledState = false;

void setup() {
  pinMode(2, INPUT);
  Serial.begin(9600);
  pinMode(3, OUTPUT);
}

void loop() {
  buttonState = digitalRead(2);

  // Check if button changed state
  if (buttonState != lastButtonState) {

    // When button becomes HIGH → press detected
    if (buttonState == HIGH) {
      ledState = !ledState;   // Toggle LED state
      Serial.print("LED is now: ");
      Serial.println(ledState ? "ON" : "OFF");
      digitalWrite(3, ledState);
    }

    delay(5); // small debounce
  }

  lastButtonState = buttonState;
}