:root {
  color-scheme: light;
}
* {
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}
html, body {
  height: 100%;
  margin: 0;
  touch-action: manipulation;
  background: #f0e6d2;
}
body {
  display: flex;
  flex-direction: column;
  align-items: center;
  background: #f0e6d2;
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", sans-serif;
  color: #333;
  padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
  user-select: none;
}
h1 {
  font-size: 1.2rem;
  margin: 12px 0 4px;
}
#backLink {
  position: absolute;
  top: max(12px, env(safe-area-inset-top));
  left: max(12px, env(safe-area-inset-left));
  font-size: 0.9rem;
  color: #3a2a10;
  text-decoration: none;
  padding: 4px 8px;
}
#status {
  font-size: 1rem;
  height: 1.4em;
  margin-bottom: 8px;
  font-weight: bold;
}
#board-wrap {
  width: min(96vw, 96vh - 140px, 560px);
  aspect-ratio: 1 / 1;
  touch-action: none;
}
canvas {
  width: 100%;
  height: 100%;
  display: block;
  background: #dcb35c;
  border-radius: 4px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.25);
}
#controls {
  margin-top: 12px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}
#turnSelect {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px 16px;
  font-size: 0.95rem;
}
#turnSelect label {
  display: flex;
  align-items: center;
  gap: 4px;
}
button {
  font-size: 1rem;
  padding: 8px 20px;
  border: none;
  border-radius: 6px;
  background: #444;
  color: #fff;
  cursor: pointer;
}
button:active {
  background: #222;
}