html, body {
  margin: 0;
  padding: 0;
  overflow: hidden;
  font-family: 'Poppins', sans-serif;
  background: radial-gradient(circle at 20% 20%, #0b132b, #1c2541, #3a506b);
  color: #fff;
  height: 100%;
}

.ui {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
  z-index: 10;
  background: rgba(0, 0, 0, 0.4);
  padding: 12px 20px;
  border-radius: 12px;
  box-shadow: 0 0 20px rgba(255,255,255,0.2);
}

h1 {
  margin-bottom: 10px;
  text-shadow: 0 0 20px cyan;
}

.buttons {
  margin-bottom: 10px;
}

button, select {
  background: #142850;
  color: white;
  border: none;
  border-radius: 6px;
  padding: 6px 12px;
  margin: 3px;
  cursor: pointer;
  font-size: 14px;
  transition: 0.3s;
}

button:hover, select:hover {
  background: #00adb5;
  box-shadow: 0 0 10px #00fff2;
}

#spaceCanvas {
  display: block;
  width: 100vw;
  height: 100vh;
  cursor: crosshair;
}

#status {
  font-size: 14px;
  color: #a6e3e9;
}