body {
  margin: 0;
  overflow: hidden;
  background: skyblue;
  font-family: 'GFF Starexx', Arial, sans-serif;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

#gameContainer {
  position: relative;
  width: 100vw;
  height: 100vh;
  max-width: 100%;
  overflow: hidden;
  background-color: skyblue;
  touch-action: manipulation; 
}

#ground {
  position: absolute;
  bottom: 0;
  width: 100%;
  height: 100px;
  background-color: green;
  z-index: 1;
}

#kelly {
  position: absolute;
  bottom: 100px;
  left: 50px;
  height: 100px;
  z-index: 10;
  image-rendering: pixelated;
}

#kelly.jump {
  animation: jump 0.6s ease;
}

#kelly.paused {
  image-rendering: pixelated;
  animation: none !important;
  filter: grayscale(60%);
}

@keyframes jump {
  0% { bottom: 100px; }
  50% { bottom: 200px; }
  100% { bottom: 100px; }
}

#obstacle {
  position: absolute;
  bottom: 95px;
  right: -60px;
  height: 80px;
  animation: moveObstacle 2s linear infinite;
  animation-play-state: paused;
  z-index: 5;
}

@keyframes moveObstacle {
  0% { right: -60px; }
  100% { right: 100vw; }
}

#score {
  position: absolute;
  top: 10px;
  left: 10px;
  color: #fff;
  font-size: 24px;
  font-weight: bold;
  font-family: 'GFF Latin', sans-serif;
  text-shadow: 1px 1px #000;
}

#gameOver {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: rgba(0, 0, 0, 0.85);
  color: white;
  font-size: 30px;
  font-weight: bold;
  padding: 30px;
  border-radius: 0;
  text-align: center;
  z-index: 999;
  font-family: 'GFF Latin', sans-serif;
  justify-content: center;
  align-items: center;
}

#restartButton {
  font-family: 'GFF Latin', sans-serif;
  font-size: 15px;
  padding: 20px 40px;
  background-color: transparent;
  color: white;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  font-weight: normal;
  margin-top: 20px;
  transition: ;
}

#restartButton:active {
  filter: brightness(75%);
}

#rotateWarning {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: #000000e6;
  color: white;
  z-index: 9999;
  font-size: 18px;
  text-align: center;
  padding-top: 40vh;
  font-family: 'GFF Latin', sans-serif;
}