#mobile-header {
    display: none;
    background: var(--background-secondary);
    justify-content: space-between;
    align-items: center;
    padding: 6px 12px;
}

#mobile-header a {
    display: flex;
    align-items: center;
    gap: 5px;
}

#mobile-header a img {
    max-width: 32px;
}

#mobile-header button {
    color: var(--text-menu);
    background: transparent;
    margin: 0;
    padding: 0;
    border: 0;
    outline: 0;
    display: flex;
    align-items: center;
    cursor: pointer;
    border-radius: 6px;
    transform: rotate(0);
    transition: background-color 200ms ease, transform 200ms ease;
}



@media (max-width: 48em) {
    
    html,
    body {
        width: unset;
        height: unset;
    }

    #split-pane {
        overflow: auto;
    }

    #right-pane, #main {
        width: 100%;
        padding: 0;
    }
    
    #main {
        padding: 1rem;
    }
    
    #mobile-header {
        display: flex;
    }
    
    #mobile-header button svg {
        width: 32px;
        height: 32px;
    }
    
    #left-pane {
        position: fixed;
        top: 0;
        left: 0;
        width: auto;
        transform: translateX(-100%);
        transition: transform 200ms ease;
        z-index: 2;
    }
    
    .menu-open #left-pane {
        transform: translateX(0);
    }
    
    body::before {
        content: "";
        display: block;
        position: fixed;
        top: 0;
        bottom: 0;
        left: 0;
        right: 0;
        background: rgba(0,0,0,0);
        pointer-events: none;
        transition: background-color 200ms ease;
        z-index: 1;
    }
    
    body.menu-open::before {
        background: rgba(0,0,0, 0.6);
    }
    
    
    body.menu-open #show-menu-button {
        background: var(--background-highlight);
        transform: rotate(90deg);
    }
}