@font-face {
    font-family: 'Roboto';
    src: url('/fonts/roboto-regular.woff2') format('woff2'),
            url('/fonts/roboto-regular.woff') format('woff');
    font-weight: 100;
    font-style: normal;
}
@font-face {
    font-family: 'RobotoBold';
    src: url('/fonts/roboto-bold.woff2') format('woff2'),
            url('/fonts/roboto-bold.woff') format('woff');
    font-weight: 700;
    font-style: normal;
}

body {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    font-family: 'Roboto', Arial, sans-serif;
    background-color: #f0f0f0;
}
.center-box {
    text-align: center;
    padding: 20px;
    background-color: #ffffff;
    border: 1px solid #ccc;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}
h1 {
    font-family: 'RobotoBold', Arial, sans-serif;
    font-size: 2.5em;
    margin: 0;
    color: #333;
}
ul.button-bar {
    text-align: center;
    list-style: none;
    padding-left: 0;
    display: flex;
    justify-content: center;
    gap: 10px;
}
ul.button-bar li {
    margin: 0;
}
ul.button-bar li a {
    display: inline-block;
    padding: 10px 15px;
    background-color: #007bff;
    color: #ffffff;
    text-decoration: none;
    border-radius: 4px;
    text-align: center;
    transition: background-color 0.3s ease;
}
ul.button-bar li a:hover {
    background-color: #0056b3;
}

@media (prefers-color-scheme: dark) {
    body {
        background-color: #121212;
    }
    h1 {
        color: #ffffff;
    }
    ul.button-bar li a {
        background-color: #007bff;
    }
    ul.button-bar li a:hover {
        background-color: #0056b3;
    }
    .center-box {
        background-color: #1e1e1e;
        color: #e0e0e0;
        border-color: #333;
    }
}