body {
  margin: 0;
  padding: 0;
  overflow: hidden;
}
.road {
  width:99vw;      
  height: 99vh;     
  
}

.car {
  position: absolute;
  width: 500px;
  bottom: 30px;
  animation: car-move 8s linear forwards;
}

@keyframes car-move {
  from {
    left: 0%;
  }
  to {
    left: 150%;
  }
}

.traffic-light {
  position: absolute;
  top: 50px;
  right: 40px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: #222;
  padding: 18px 10px;
  border-radius: 18px;

}

.light {
  width: 32px;
  height: 32px;
  border-radius: 50%;
}

.light#red {
  background: #d32f2f;
}
.light#yellow {
  background: #fbc02d;
}
.light#green {
  background: #388e3c;
}

.start-btn{
     position: absolute;
  left: 20px;
  top: 50px;
  padding: 12px 28px;
  font-size: 1.1rem;
  border-radius: 8px;
  border: none;
  background: #333;
  color: #fff;
  cursor: pointer;
  z-index: 10;
  box-shadow: 0 2px 8px #0004;
  
}
.stop-btn{
     position: absolute;
  left: 120px;
  top: 50px;
  padding: 12px 28px;
  font-size: 1.1rem;
  border-radius: 8px;
  border: none;
  background: #333;
  color: #fff;
  cursor: pointer;
  z-index: 10;
  box-shadow: 0 2px 8px #0004;
}


.car.paused {
  animation-play-state: paused !important;
}