$chart-nav-width: 180px;
$chart-icon-width: 32px;
$chart-icon-border: 1px;

#left-chart-nav {
    position: fixed;
    top: 49px;
    bottom: 0;
    left: 0;
    border-top: 1px solid $clr-primary-darker;

    // padding-top: $nav-height;
    width: $chart-nav-width;

    background-color: $clr-primary;
    overflow-y: hidden;
    z-index: 15;

    &:hover {
        overflow-y: auto;
    }

    ul {
        padding: 0;
    }

        li {
            height: 54px;
            transition: 0.5s;
            padding: 0;

            a {
                display: block;
                padding: 10px 15px;
                color: #ccc;
                position: relative;
                display: block;
                transition: 0.5s;

                .chart-name {
                    display: inline-block;
                    position: relative;
                    top: -12px;
                    margin-left: 10px;
                }

                .chart-icon {
                    content: '';
                    display: inline-block;
                    width: $chart-icon-width;
                    height: $chart-icon-width;
                    background-image: url('../images/chart-icon.png');
                    background-size: $chart-icon-width;
                    background-repeat: no-repeat;
                    border-radius: 50%;
                    border: $chart-icon-border solid $clr-light;
                }
            }

            &.active {
                background-color: $clr-contrast;

                a {
                    color: $clr-lightest;
                }

                .chart-icon {
                    border-color: $clr-lightest;
                }
            }

            &:hover {
                background-color: $clr-primary-dark;

                &.active {
                    background-color: $clr-contrast;
                }
            }
        }
}

@media (max-width: 768px) {
    #left-chart-nav {
        display: none;
    }
}

#nav-mask {
    display: none;
    position: fixed;
    top: 50px;
    left: 155px;
    bottom: 0;
    right: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, .3);
    z-index: 12;
}
#nav-layer {
    display: none;
    position: fixed;
    width: 620px;
    max-height: 350px;
    left: $chart-nav-width;
    top: 200px;
    z-index: 15;
    background-color: #fff;
    overflow-y: scroll;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.5);

    .chart-list {
        @include clearfix;
        width: 100%;
        clear: both;
        padding: 10px;
        box-sizing: border-box;
    }
    li {
        float: left;
        width: 180px;
        margin: 10px 10px;
        padding: 5px;
        // border-radius: 10px;
        // border: 1px solid rgba(0, 0, 0, .2);
        box-shadow: 0 0 1px rgba(0, 0, 0, .3);
        transition: box-shadow 0.5s ease-out;
        &:hover {
            box-shadow: 0 0 20px rgba(0, 0, 0, .3);
        }
    }
    img {
        width: 100%;
        height: 100%;
    }
}


// icon sprites
$chart-types: 'line', 'bar', 'scatter', 'pie', 'radar', 'funnel', 'gauge', 'map',
    'graph', 'treemap', 'parallel', 'sankey', 'candlestick', 'boxplot', 'heatmap',
    'pictorialBar', 'themeRiver', 'calendar', 'custom', 'sunburst', 'gl', 'tree';
$chart-position: 0, 1, 2, 4, 5, 10, 9, 8, 7, 15, 16, 17, 3, 18, 11, 24, 25, 26, 27, 28, 29, 14;

@each $type in $chart-types {
    $i: index($chart-types, $type);
    $pos: nth($chart-position, $i);
    #left-chart-nav-#{$type} .chart-icon {
        background-position-x: - $chart-icon-border;
        background-position-y: - $chart-icon-border - $pos * $chart-icon-width;
    }
}