const int ldrPin = A0;
const int ledPin = 13;

void setup() {
  pinMode(ledPin, OUTPUT);
  Serial.begin(9600);
}

void loop() {
  int lightLevel = analogRead(ldrPin);
  Serial.print("Light Level: ");
  Serial.println(lightLevel);

  if (lightLevel < 100) {
    // Very low light: blink slowly (night mode)
    digitalWrite(ledPin, HIGH);
    delay(500);
    digitalWrite(ledPin, LOW);
    delay(500);
  } 
  else if (lightLevel < 500) {
    // Low light: LED ON
    digitalWrite(ledPin, HIGH);
  } 
  else {
    // Bright light: LED OFF
    digitalWrite(ledPin, LOW);
  }

  delay(200); // Small delay for stability
}