@import '../../styles/colors', '../../styles/fonts', '../../styles/fontSizeCalculator';

$height: 55px;

.sub-navigation {
    background-color: color(backgroundColorLight);
    font-size: em(14px);
    font-weight: $fontWeightSemiBold;
    height: $height;
    margin: 0 -11px;
    overflow: hidden;
    position: relative;
    z-index: 0;
    &.sub-navigation-border-bottom { border-bottom: 1px solid color(borderColor); }
    &.sub-navigation-border-top { border-top: 1px solid color(borderColor); }
    .sub-navigation-scroll-indicator {
        background: -webkit-gradient(
            linear, left top, right top,
            color-stop(0%, rgba(246, 247, 248, 0)),
            color-stop(100%, rgba(246, 247, 248, 1))
        );
        height: $height - 1px;
        pointer-events: none;
        position: absolute;
        right: 0;
        top: 0;
        width: 24px;
        z-index: 2;
    }
    .sub-navigation-scroll {
        -webkit-overflow-scrolling: touch;
        overflow-x: scroll;
        overflow-y: hidden;
    }
        .sub-navigation-item-container {
            display: inline-block;
            height: $height;
            overflow: hidden;
            padding-right: 8px;
            white-space: nowrap;
        }
    &-drawer {
        .sub-navigation-item-container { padding: 0 11px; }
        > div { border-top: 1px solid color(borderColor); }
    }
        button {
            align-items: center;
            background-color: transparent;
            border: 0;
            display: inline-flex;
            height: 55px;
            justify-content: flex-start;
            letter-spacing: .6px;
            line-height: 55px;
            margin: 0 15px;
            outline: none;
            padding: 0;
            position: relative;
            transition: background-color 250ms linear;
            z-index: 1;
            > .tab-btn-inner {
                align-items: center;
                display: inline-flex;
                justify-content: center;
                width: 100%;
            }
            .copy { color: color(colorStatic); transition: color 250ms linear; }
            .button-is-active-indicator {
                background-color: color(backgroundColorHighlight);
                bottom: 10px;
                height: 2px;
                left: 0;
                opacity: 0;
                position: absolute;
                transition: opacity 250ms linear;
                visibility: visible;
                width: 100%;
            }
            &.is-active {
                cursor: auto;
                z-index: 2;
                .copy { color: color(color); }
                .button-is-active-indicator { opacity: 1; visibility: visible; }
            }
            &:hover .copy { color: color(color); }
            &:first-child { margin-left: 11px; }
            &:last-child { margin-right: 11px; }
        }
}

@media only screen and (min-width: 768px) {
    .sub-navigation {
        margin: 0 -22px;
        .sub-navigation-item-container { padding: 0 11px; }
    }
}