body {
  margin: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  flex-direction: column;
  font-family: 'Arial', sans-serif;
  color: white;
  background: linear-gradient(to bottom, #0f2027, #203a43, #2c5364); /* Gradiente de fundo */
}

.hidden { display: none; }

#menu, #instructions, #settings {
  text-align: center;
  padding: 20px;
  background: rgba(0,0,0,0.7);
  border-radius: 10px;
}

button {
  padding: 12px 25px;
  margin: 10px;
  font-size: 16px;
  cursor: pointer;
  border: none;
  border-radius: 5px;
  background: linear-gradient(to right, #ff416c, #ff4b2b);
  color: white;
  font-weight: bold;
  transition: transform 0.2s, box-shadow 0.2s;
}

button:hover {
  transform: scale(1.05);
  box-shadow: 0 0 10px #ff4b2b;
}

canvas {
  border: 2px solid white;
  background-color: black;
  box-shadow: 0 0 20px rgba(255,255,255,0.3);
  margin-top: 20px;
}

#footer {
  position: absolute;
  bottom: 10px;
  right: 10px;
  font-size: 14px;
}