body {
  margin: 0;
  height: 100vh;
  background: linear-gradient(135deg, #ff758c, #ff7eb3);
  display: flex;
  justify-content: center;
  align-items: center;
  font-family: system-ui, -apple-system, BlinkMacSystemFont;
}

#container {
  width: 420px;
}

.card {
  background: #1c1c1c;
  color: white;
  padding: 25px;
  border-radius: 16px;
  text-align: center;
  box-shadow: 0 15px 40px rgba(0,0,0,0.3);
}

button {
  margin-top: 15px;
  padding: 10px 20px;
  font-size: 16px;
  background: #ff4d6d;
  border: none;
  border-radius: 8px;
  color: white;
  cursor: pointer;
}

button:hover {
  background: #ff3355;
}

.hidden {
  display: none;
}

canvas {
  background: #111;
  border-radius: 12px;
  display: block;
  margin-top: 10px;
}

.hud {
  display: flex;
  justify-content: space-between;
  color: white;
  margin-bottom: 5px;
}