:root { color-scheme: dark; }
* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  background: #0b0e14;
  color: #cdd6f4;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}

#app {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  min-height: 100%;
  padding: 16px;
}

/* 3D ビュー。アンチエイリアスを活かすため pixelated にはしない */
#screen {
  background: #10141c;
  border: 1px solid #313244;
  border-radius: 6px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, .5);
}

/* 操作説明のオーバーレイ（HUD は DOM 側で持つ） */
#help {
  font-size: 12px;
  line-height: 1.8;
  color: #8a93a8;
  text-align: center;
}

/* 起動中の表示。起動が済んだら消える */
#loading {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: #8a93a8;
  pointer-events: none;
}
#loading[hidden] { display: none; }
#loading[data-state="error"] { color: #f38ba8; }