html, body { margin: 0; padding: 0; width: 100%; height: 100%; overflow: hidden; background: #000; }
#unity-container { position: fixed; inset: 0; }
#unity-canvas { display: block; width: 100%; height: 100%; background: #000; }
#unity-loading {
  position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center;
  color: #ddd; font-family: Helvetica, Arial, sans-serif; background: #111; pointer-events: none;
}
#unity-loading-title { font-size: 28px; margin-bottom: 18px; }
#unity-progress-track { width: 260px; height: 10px; background: #333; border-radius: 5px; overflow: hidden; }
#unity-progress-fill { width: 0; height: 100%; background: #ffcc33; transition: width 0.15s; }
#unity-loading-status { margin-top: 12px; font-size: 14px; }
#unity-warning { position: absolute; left: 50%; top: 5%; transform: translate(-50%); display: none; }
#unity-warning div { padding: 10px; margin: 5px 0; font-family: Helvetica, Arial, sans-serif; }
#unity-warning div.error { background: #c00; color: #fff; }
#unity-warning div.warning { background: #ffc; color: #000; }