/* Global layout and navigation styles */
html { color-scheme: light dark; }

body {
    margin: 0;
    font-family: Arial, sans-serif;
}

nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 50px;
    background-color: #333;
    color: #fff;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 0 0;
    z-index: 1000;
}

    nav .title {
        position: absolute;
        left: 20px;
        font-weight: bold;
        font-size: 1.1em;
        color: tomato;
    }

    nav a {
        color: #fff;
        text-decoration: none;
        margin: 0 15px;
        font-weight: bold;
        cursor: pointer;
    }

/* Space reserved for the fixed nav */
iframe {
    position: absolute;
    top: 50px; /* space for nav */
    left: 0;
    width: 100%;
    height: calc(100vh - 50px);
    border: none;
}

/* Responsive: hide title on small form factors */
@media (max-width: 600px) {
    nav .title {
        display: none;
    }

    nav a {
        margin: 0 8px;
        font-size: 0.95em;
    }

    iframe {
        top: 48px;
        height: calc(100vh - 48px);
    }
}