body {
    background-color: #000;
    margin: 0;
    position: relative;
    height: 100vh;
    font-family: sans-serif;
    color: #fff;
}

.screen {
    text-align: center;
    padding-top: 50px;
}

button {
    margin: 10px;
    padding: 10px 20px;
    font-size: 16px;
    cursor: pointer;
    border-radius: 5px;
    border: none;
    background-color: #222;
    color: #fff;
    transition: 0.2s;
}

button:hover {
    background-color: #555;
}

canvas {
    display: block;
    margin: 0 auto;
    border: 2px solid #fff;
    background: linear-gradient(to bottom, #111, #000); /* gradiente de fundo */
}

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

.footer-info a {
    color: #fff;
    text-decoration: none;
}

.footer-info a:hover {
    text-decoration: underline;
}

#win-message {
    display: none;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: #fff;
    font-size: 40px;
    text-align: center;
    text-shadow: 2px 2px #000;
}

.highlight {
    box-shadow: 0 0 15px 7px #00ff00;
    transition: box-shadow 0.3s ease-in-out;
}

#game-score {
    position: absolute;
    top: 20px;
    width: 100%;
    text-align: center;
    font-size: 30px;
    text-shadow: 2px 2px #000;
}