body {
    margin: 0;
    padding: 0;
    font-family: Arial, sans-serif;
    background-color: #000;
    overflow: hidden; /* Evita el desplazamiento de la página */
}

button.voltar{
    position: fixed;
    top: 30px;
    left: 30px;
    color: white;
    border: none; 
    background-color: transparent;
  }

#startMenu {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(0, 0, 0, 0.8); /* Fondo semi-transparente */
    z-index: 999; /* Encima de todo */
}

#menuTitle {
    color: #fff;
    font-size: 24px;
    margin-bottom: 20px;
}

#startMenu button {
    padding: 10px 20px;
    margin-bottom: 10px;
    font-size: 18px;
    background-color: #fff;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

#game {
    display: none; /* Ocultar el juego al principio */
    position: relative;
    width: 100vw; /* Usa toda la vista de la ventana */
    height: 100vh; /* Usa toda la vista de la ventana */
    background-color: #000;
    border-bottom: 2px solid #fff; /* Línea blanca en la parte inferior */
}

#player {
    position: absolute;
    width: 20px;
    height: 20px;
    background-color: #fff;
    bottom: 50px;
    left: 50%;
    transform: translateX(-50%);
}

#stars {
    position: absolute;
}

.star {
    position: absolute;
    width: 20px;
    height: 20px;
    background-color: #ffff00;
    border-radius: 50%;
}

#obstacles {
    position: absolute;
}

.obstacle {
    position: absolute;
    background-color: #ff0000;
}

#bottomLine {
    position: absolute;
    width: 100%;
    height: 2px;
    background-color: #fff;
    bottom: 0;
}

#score {
    position: absolute;
    top: 10px;
    left: 10px;
    color: #fff;
}

#lives {
    position: absolute;
    top: 10px;
    right: 10px;
    color: #fff;
}

#gameOver {
    display: none;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: #fff;
    font-size: 24px;
}