body {
    margin: 0;
    font-family: Arial, sans-serif;
    color: #1d1d1f;
    background-color: #f5f5f7;
}

header {
    background: linear-gradient(90deg, #264653 0%, #2a9d8f 100%);
    color: #ffffff;
    text-align: center;
    padding: 1.5rem;
}


    header h1 {
        font-size: 2.0rem;
    }

    header p {
        font-size: 1.2rem;
        margin-top: 0.5rem;
    }

    header nav {
        margin-top: 1.5rem;
        display: flex;
        justify-content: center;
        gap: 1.5rem;
    }

        header nav a {
            color: #ffffff;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

            header nav a:hover {
                text-decoration: underline;
            }

main {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 3rem;
}

#game-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1.0rem;
    opacity: 0;
    transition: opacity 0.5s ease-in-out;
}

#game {
    display: block;
    width: 100%;
    height: 100%;
    background-color: #000;
    position: relative;
}

.rounded-button {
    display: inline-block;
    padding: 0.8rem 1.5rem;
    margin: 1.0rem 0.2rem;
    color: #ffffff;
    background: linear-gradient(90deg, #0070c9 0%, #004999 100%);
    border: none;
    border-radius: 0.5rem;
    text-align: center;
    text-decoration: none;
    font-size: 1.2rem;
    font-weight: 500;
    transition-duration: 0.3s;
    cursor: pointer;
}

    .rounded-button:hover {
        background: linear-gradient(90deg, #004999 0%, #0070c9 100%);
    }

nav img {
    height: 20px;
    width: 20px;
}