/**
 * When the meeting time-timer has reached / passed the scheduled end, draw a
 * red inset frame around the whole conference video area. Implemented via an
 * `::after` pseudo-element so the frame paints on top of LargeVideo / the
 * filmstrip (those children fill #videospace and would otherwise cover any
 * shadow / border drawn on the parent itself). The pseudo-element is
 * non-interactive so it doesn't intercept clicks.
 */
// #videospace already has `position: absolute` so it acts as the
// containing block for our absolutely-positioned ::after.
#videospace.timer-expired::after {
    border: 3px solid #F24D5F;
    box-sizing: border-box;
    content: '';
    height: 100%;
    left: 0;
    pointer-events: none;
    position: absolute;
    top: 0;
    width: 100%;
    z-index: 1000;
}