html, body {
  margin: 0;
  height: 100%;
  background: #ffffff;
  overflow: hidden;
  font-family: sans-serif;
}

canvas {
  display: block;
  width: 100vw;
  height: 100vh;
}

#breathText {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 16px;
  color: #ff8c00;
  pointer-events: none;
  user-select: none;
  transition: opacity 0.3s ease, transform 0.3s ease;
  text-align: center;
}