* { box-sizing: border-box; }
body { padding: 0; margin: 0 }
#unity-container { position: fixed; width: 100%; height: 100%; }
#unity-canvas { width: 100%; height: 100%; background: #231F20 }
#unity-loading-bar { position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%); display: none; text-align: center; }
#unity-logo { width: 144px; height: 144px; background: url('procedural-building-logo.png') no-repeat center; margin-left: auto; margin-right: auto; animation: logoPulse 1.5s ease-in-out infinite; }
#unity-progress-bar-empty { margin-left: auto; margin-right: auto; width: 141px; height: 18px; margin-top: 10px; background: url('progress-bar-empty-dark.png') no-repeat center }
#unity-progress-bar-full { width: 0%; height: 18px; margin-top: 10px; background: url('progress-bar-full-dark.png') no-repeat center }
#unity-warning { position: absolute; left: 50%; top: 5%; transform: translate(-50%); background: white; padding: 10px; display: none }
#unity-title { color: white; font-family: Arial, sans-serif; font-size: 32px; font-weight: bold; text-align: center; margin-bottom: 20px; text-shadow: 0 2px 6px rgba(0,0,0,.6); }
#unity-progress-text { color: white; font-family: Arial, sans-serif; font-size: 18px; font-weight: bold; text-align: center; margin-top: 12px; text-shadow: 0 2px 4px rgba(0,0,0,.5); }

@keyframes logoPulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.05); }
  100% { transform: scale(1); }
}