body {
  margin: 0;
  padding: 0;
  background: #1e1e1e;
  color: #eee;
  font-family: 'Segoe UI', sans-serif;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.container {
  margin-top: 20px;
  text-align: center;
}

.top-panel {
  margin-bottom: 10px;
  background: #292929;
  padding: 10px;
  border-radius: 8px;
  display: inline-flex;
  gap: 15px;
  align-items: center;
}

canvas {
  border: 2px solid #444;
  background-color: #000;
  cursor: crosshair;
}

footer {
  margin-top: 20px;
  padding: 10px;
  font-size: 14px;
  color: #aaa;
}