#overlay_idle_warning {
    position: absolute;
    left: 0; top: 0; right: 0; height: 100%;
    backdrop-filter: blur(0px);
    background-color: rgba(255,255,255,0.2);
    opacity: 0;
    pointer-events: none;
    transition: backdrop-filter var(--idle-warning-transition), background-color var(--idle-warning-transition), opacity var(--anim-duration);
    z-index: 2000;
}

#idle_warning {
    position: absolute;
    left: 50%; top: 50%; width: 30rem; height: 30rem;
    transform: translate(-50%,-50%);
    background-color: rgba(255,255,255,0.1);
    backdrop-filter: blur(0px);
    border-radius: 15rem;
    border: 4px solid white;
    box-shadow: 0 0 4rem rgba(0,0,0,0.3);
    pointer-events: none;
}

#idle_warning .text {
    position: absolute;
    left: 50%; top: 50%; transform: translate(-50%,-50%);
    font-family: Verdana, Geneva, Tahoma, sans-serif;
    font-size: 2.4rem;
    color: #007AFF;
    text-align: center;
}

#idle_warning svg {
    position: absolute;
    left: 50%; top: 50%; transform: translate(-50%,-50%);
    width: 100%; height: 100%;
}

#idle_warning svg .progress {
    stroke-linecap: round;
    stroke-dashoffset: 25;
    stroke: #007AFF;
}