body {
  font-family: Arial, sans-serif;
  background: #111;
  color: #fff;
  margin: 0;
  padding: 0;
  text-align: center;
}

.game-container {
  padding: 5vw;
  max-width: 100%;
}

h1 {
  font-size: 6vw;
  margin-bottom: 4vw;
}

#wallet {
  font-size: 5vw;
  margin-bottom: 4vw;
  color: #00ff88;
}

.game-area {
  position: relative;
  width: 100%;
  max-width: 600px;
  height: 50vw;
  max-height: 400px;
  margin: 0 auto;
  background: linear-gradient(to top, #222, #444);
  border-radius: 10px;
  overflow: hidden;
}

#plane {
  position: absolute;
  width: 10vw;
  min-width: 40px;
  max-width: 60px;
  top: 80%;
  left: 0;
  transition: left 0.1s linear, top 0.1s linear, transform 0.1s ease-in-out;
}

#blast {
  position: absolute;
  width: 10vw;
  min-width: 40px;
  max-width: 80px;
  display: none;
  pointer-events: none;
  z-index: 2;
}

#multiplier {
  font-size: 6vw;
  margin-top: 5vw;
}

.controls {
  margin-top: 5vw;
}

input,
button {
  padding: 3vw;
  font-size: 4vw;
  margin: 2vw;
  width: 80%;
  max-width: 300px;
}

#result {
  font-size: 4vw;
  margin-top: 5vw;
}

@media (min-width: 600px) {
  #wallet,
  #multiplier,
  input,
  button,
  #result {
    font-size: 18px;
  }
  h1 {
    font-size: 32px;
  }
}