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

body {
  font-family: 'Courier New', monospace;
  background: linear-gradient(135deg, #87CEEB 0%, #98FB98 100%);
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  padding: 20px;
}

.game-container {
  background: #000;
  border-radius: 10px;
  padding: 20px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

.hud {
  display: flex;
  justify-content: space-between;
  color: white;
  font-size: 18px;
  font-weight: bold;
  margin-bottom: 10px;
  padding: 10px;
  background: rgba(255,255,255,0.1);
  border-radius: 5px;
}

#gameCanvas {
  border: 3px solid #333;
  border-radius: 5px;
  background: #5C94FC;
  display: block;
}

.controls {
  text-align: center;
  color: white;
  margin-top: 10px;
  font-size: 14px;
}

.game-over {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: rgba(0,0,0,0.8);
  color: white;
  padding: 30px;
  border-radius: 10px;
  text-align: center;
  font-size: 24px;
}