* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body, html {
  height: 100%;
  font-family: 'Segoe UI', sans-serif;
  overflow: hidden;
  background-color: black;
  touch-action: manipulation;
}

#game {
  width: 100%;
  height: 100vh;
  background-size: cover;
  background-position: center;
  position: relative;
}

#scoreboard {
  position: absolute;
  top: 10px;
  left: 10px;
  z-index: 1000;
  background: rgba(0,0,0,0.5);
  padding: 10px 15px;
  border-radius: 5px;
  color: #00ffff;
  font-weight: bold;
  font-size: 15px;
}

#player {
  position: absolute;
  bottom: 50px;
  left: 50px;
  width: 50px;
  height: 50px;
  background-color: transparent;
  background-image: url('Player.svg');
  background-size: cover;
  filter: drop-shadow(0 0 10px #ff00ff);
}

.obstacle {
  position: absolute;
  bottom: 50px;
  width: 50px;
  height: 50px;
  background-color: transparent;
  background-image: url('Obstacle.svg');
  background-size: cover;
  filter: drop-shadow(0 0 10px red);
  animation-name: moveObstacle;
  animation-timing-function: linear;
  animation-fill-mode: forwards;
}

@keyframes moveObstacle {
  from { right: -60px; }
  to { right: 110%; }
}

.powerup {
  position: absolute;
  bottom: 150px;
  width: 40px;
  height: 40px;
  background-color: gold;
  border-radius: 50%;
  animation: moveObstacle 4s linear forwards;
  filter: drop-shadow(0 0 6px yellow);
}