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

body {
  background: #000;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
  width: 100vw;
}

canvas {
  image-rendering: pixelated;
  image-rendering: crisp-edges;
  touch-action: none;
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  user-select: none;
}

#daynight-toggle {
  position: fixed;
  top: 12px;
  right: 12px;
  z-index: 10;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}

.toggle-track {
  display: block;
  width: 36px;
  height: 18px;
  background: #FFB347;
  border: 2px solid #8B6B3A;
  image-rendering: pixelated;
  position: relative;
  transition: background 0.5s;
}

.toggle-track::before {
  content: '\2600';
  position: absolute;
  left: 2px;
  top: 0;
  font-size: 10px;
  line-height: 14px;
}

.toggle-track::after {
  content: '\263E';
  position: absolute;
  right: 2px;
  top: 0;
  font-size: 10px;
  line-height: 14px;
}

.toggle-knob {
  display: block;
  width: 12px;
  height: 12px;
  background: #FFD166;
  border: 1px solid #8B6B3A;
  position: absolute;
  top: 1px;
  left: 1px;
  transition: left 0.3s, background 0.5s;
}

.night .toggle-track {
  background: #1B1B4E;
  border-color: #4A4A8A;
}

.night .toggle-knob {
  left: 19px;
  background: #C0C0E0;
  border-color: #4A4A8A;
}