body {
    background: url(fondo.png);
    color: #fff;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.portada, .game-over{
    background-color: rgba(0, 0, 0, 0.8);
}

#game-container,
#game-over-screen {
    display: none;
}

canvas {
    border: 4px solid #333;
    background-color: #1a1a1a;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.8);
}

.stats-box {
    background: #222;
    border: 2px solid #444;
    border-radius: 8px;
    padding: 15px;
    min-width: 150px;
}