.session-footer {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 8px 20px;
    margin-top: auto;
    padding: 14px 24px;
    border-top: 1px solid rgba(90, 110, 140, .14);
    background: rgba(255, 255, 255, .75);
    color: #64748b;
    font-size: 12px;
}

#session-countdown {
    font-variant-numeric: tabular-nums;
}

.session-footer.is-warning {
    color: #92400e;
    background: #fffbeb;
}

@media (min-width: 901px) {
    .sidebar {
        position: sticky;
        top: 0;
        height: 100dvh;
        box-sizing: border-box;
        overflow-y: auto;
    }

    .sidebar .session-footer {
        position: sticky;
        bottom: 0;
        margin-top: auto;
        background: #f5f7fb;
        padding-bottom: 8px;
    }
}

@media (min-width: 901px) {
    .app-shell > aside.sidebar {
        position: sticky;
        top: 0;
        height: 100dvh;
        min-height: 100dvh;
        box-sizing: border-box;
        padding-bottom: 70px;
    }

    .app-shell > aside.sidebar > .session-footer {
        position: absolute;
        bottom: 12px;
        left: 16px;
        right: 16px;
        margin: 0;
        padding: 8px 0 0;
        font-size: 9px;
        line-height: 1.3;
        background: transparent;
    }
}