body {
  margin: 0;
  font-family: Arial, sans-serif;
  background-image: url("item/iceWaterDeepStars.png");
  background-size: cover;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  align-items: center;
  justify-content: center;
}

canvas {
  background-color: transparent;
  border: 2px solid black;
  width: min(1000px, 96vw);
  height: auto;
  image-rendering: auto;
}

.screen {
  position: absolute;
  text-align: center;
  background: rgba(0, 0, 0, 0.75);
  color: white;
  padding: 40px;
  z-index: 10;
}

.hidden {
  display: none;
}

.mobile-controls {
  display: flex;
  justify-content: center;
  margin-top: 10px;
  gap: 10px;
}

.mobile-controls button {
  font-size: 24px;
  padding: 10px 20px;
}

@media (max-width: 700px) {
  .screen {
    width: 70vw;
    padding: 28px;
  }

  .mobile-controls button {
    font-size: 20px;
    padding: 9px 18px;
  }
}
#difficultySelect {
  font: inherit;
  padding: 6px 8px;
  margin: 0 8px 12px;
}

#level-select {
  margin: 8px 0 14px;
}

#level-select button {
  margin: 3px;
  padding: 5px 8px;
}