rdio-scanner/client/imports/app/radio/radio-led/radio-led.component.scss

$color-off: rgb(80, 80, 80);
$color-on: rgb(100, 230, 50);

:host {
    align-items: center;
    display: flex;
    flex-direction: row;
    justify-content: flex-end;

    >div {
        background: $color-off;
        border-radius: 2px;
        height: 12px;
        margin: 6px;
        width: 24px;

        &:not(:last-child) {
            margin-right: 4px;
        }

        &.on {
            background: $color-on;
            box-shadow: 0 0 6px 3px $color-on;
        }

        &.paused {
            animation: blink 2s step-end infinite;
        }
    }
}

@keyframes blink {
    50% {
        background: $color-off;
        box-shadow: none;
    }
}