html, body {
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0;
  overflow: hidden;
  background: #1a1a1a;
}

canvas {
  display: block;
  width: 100%;
  height: 100%;
}

#hud {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  pointer-events: none;
  text-align: center;
}

#status {
  font-family: 'Courier New', monospace;
  font-size: 13px;
  color: #333333;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: color 0.2s;
}

#status.active { color: #444; }
#status.exhale { color: #f0c040; }
#status.resolved { color: #f0c040; }