body {
  margin: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: #2c3e50;
  color: #ecf0f1;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

canvas {
  background: #87ceeb;
  border-radius: 6px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.25);
}

#ui {
  margin-top: 12px;
  text-align: center;
}

button {
  background: #34495e;
  color: #ecf0f1;
  border: none;
  padding: 10px 18px;
  margin: 4px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 14px;
}

button:hover {
  background: #3d566e;
}

#scoreboard {
  color: #bdc3c7;
  font-size: 14px;
  margin-top: 6px;
}