html, body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  background: #0a0e17;
  overflow: hidden;
}

#unity-container {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

#unity-canvas {
  background: #0a0e17;
  box-shadow: 0 0 40px rgba(77, 232, 255, 0.08);
}

#unity-loading-bar {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  display: none;
  text-align: center;
  font-family: -apple-system, "Segoe UI", Arial, sans-serif;
}

#unity-loading-title {
  color: #4de8ff;
  font-size: 22px;
  letter-spacing: 0.08em;
  margin-bottom: 16px;
  text-transform: uppercase;
}

#unity-progress-bar-empty {
  width: 220px;
  height: 6px;
  background: rgba(77, 232, 255, 0.12);
  border-radius: 3px;
  overflow: hidden;
}

#unity-progress-bar-full {
  width: 0%;
  height: 100%;
  background: #4de8ff;
  border-radius: 3px;
  transition: width 0.15s ease-out;
}

#unity-warning {
  position: absolute;
  left: 50%;
  top: 5%;
  transform: translate(-50%);
  padding: 10px;
  display: none;
  font-family: -apple-system, "Segoe UI", Arial, sans-serif;
  border-radius: 4px;
  z-index: 10;
}

#unity-fullscreen-button {
  position: absolute;
  right: 16px;
  bottom: 16px;
  width: 28px;
  height: 28px;
  cursor: pointer;
  opacity: 0.55;
  transition: opacity 0.15s ease-out;
  background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="%234de8ff" stroke-width="2"><path d="M8 3H5a2 2 0 0 0-2 2v3m18 0V5a2 2 0 0 0-2-2h-3m0 18h3a2 2 0 0 0 2-2v-3M3 16v3a2 2 0 0 0 2 2h3"/></svg>');
  background-repeat: no-repeat;
  background-position: center;
  background-size: contain;
}

#unity-fullscreen-button:hover {
  opacity: 1;
}