const int RedButtonPin = 2;
const int GreenButtonPin = 3;
const int RedLEDPin = 13;
const int LeftGreenLEDPin = 11;
const int RightGreenLEDPin = 12;

int RedLEDState = HIGH;
int RedButtonState;
int LastRedButtonState = LOW;

int LeftGreenLEDState = LOW;
int RightGreenLEDState = LOW;
int GreenLEDState = 0;
int SetGreenTimer = 0;
int GreenLEDTimer = 0;

unsigned long LastRedDebounceTime = 0;
unsigned long DebounceDelay = 50;

void setup() {
  pinMode(RedButtonPin, INPUT);
  pinMode(RedLEDPin, OUTPUT);
  pinMode(GreenButtonPin, INPUT);
  pinMode(LeftGreenLEDPin, OUTPUT);
  pinMode(RightGreenLEDPin, OUTPUT);

  // set initial LED state
  digitalWrite(RedLEDPin, RedLEDState);
  digitalWrite(LeftGreenLEDPin, LOW);
  digitalWrite(RightGreenLEDPin, LOW);
}

void loop() {
  int ReadRed = digitalRead(RedButtonPin);
  int ReadGreen = digitalRead(GreenButtonPin);
  
  if (ReadRed != LastRedButtonState) {
    LastRedDebounceTime = millis();
  }

  if ((millis() - LastRedDebounceTime) > DebounceDelay) {
    if (ReadRed != RedButtonState) {
      RedButtonState = ReadRed;
      if (RedButtonState == HIGH) {
        RedLEDState = !RedLEDState;
      }
    }
  }

  digitalWrite(RedLEDPin, RedLEDState);

  LastRedButtonState = ReadRed;

  if (ReadGreen == HIGH){
    if (SetGreenTimer == 1){
      SetGreenTimer = 0;
      GreenLEDTimer = millis();
    }
    if (millis() - GreenLEDTimer <= 75) {
      digitalWrite(LeftGreenLEDPin, LOW);
      digitalWrite(RightGreenLEDPin, LOW);
    }
    if (millis() - GreenLEDTimer >= 76 && millis() - GreenLEDTimer <= 300) {
      digitalWrite(LeftGreenLEDPin, HIGH);
      digitalWrite(RightGreenLEDPin, LOW);
    } 
    if (millis() - GreenLEDTimer >= 301 && millis() - GreenLEDTimer <= 375) {
      digitalWrite(LeftGreenLEDPin, LOW);
      digitalWrite(RightGreenLEDPin, LOW);
    } 
    if (millis() - GreenLEDTimer >= 376 && millis() - GreenLEDTimer <= 600) {
      digitalWrite(LeftGreenLEDPin, LOW);
      digitalWrite(RightGreenLEDPin, HIGH);
    } 
    if (millis() - GreenLEDTimer >= 601) {
      GreenLEDTimer = millis();
    } 
  }
  
  if (ReadGreen == LOW) {
    SetGreenTimer = 1;
    digitalWrite(LeftGreenLEDPin, LOW);
    digitalWrite(RightGreenLEDPin, LOW);
  }
}