@mixin ellipsis($width: 100px) {
    max-width: $width;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

@mixin box-shadow($h-shadow: 1px, $v-shadow: 1px, $blur: 15px, $spread: 6px, $color: rgba(0, 0, 0, .1)) {
    box-shadow: $h-shadow $v-shadow $blur $spread $color;
}

@mixin clearfix {
    &:after {
        clear: both;
        content: '';
        display: table;
    }
}

@mixin slide($max, $overflow, $min: 0) {
    max-height: $min;
    transition: max-height .5s ease-in;
    overflow: #{$overflow};
    &.open {
        transition: max-height .5s ease-in;
        max-height: $max;
    }
}

@mixin background($red: 255, $green: 255, $blue: 255, $opacity: 1) {
    background: rgba($red, $green, $blue, $opacity);
}

@mixin popover($width, $top: '', $left: '', $bottom: '', $right: '', $arrow-width: 0, $arrow-top: '', $arrow-left: '', $arrow-bottom: '', $arrow-height: 15px) {
    @extend %light;
    @extend %small;
    background: $blackish;
    bottom: #{$bottom};
    color: $white;
    display: none;
    left: #{$left};
    list-style-type: none;
    margin: 0;
    padding: 10px;
    position: absolute;
    right: #{$right};
    top: #{$top};
    width: $width;
    z-index: 99;
    a {
        @extend %small;
        border-bottom: 1px solid $grayer;
        color: $white;
        display: block;
        padding: 10px 2px;
        &:last-child {
            border: 0;
        }
        &:hover {
            color: $primary-light;
            transition: color .3s linear;
            &.point {
                color: $white;
            }
        }
    }
    &:after {
        background: $blackish;
        bottom: #{$arrow-bottom};
        content: '';
        height: #{$arrow-height};
        left: #{$arrow-left};
        position: absolute;
        top: #{$arrow-top};
        transform: rotate(45deg);
        width: #{$arrow-width};
    }
}

@mixin arrow($arrow-direction, $border-color, $background-color, $border-width, $border-size) {
    &:after,
    &:before {
        #{$arrow-direction}: 100%;
        left: 50%;
        border: solid transparent;
        content: " ";
        height: 0;
        width: 0;
        position: absolute;
        pointer-events: none;
    }
    &:after {
        border-color: rgba($background-color, 0);
        border-#{$arrow-direction}-color: $background-color;
        border-width: #{$border-size}px;
        margin-left: -#{$border-size}px;
    }
    &:before {
        border-color: rgba($border-color, 0);
        border-#{$arrow-direction}-color: $border-color;
        border-width: calc(#{$border-size}px + #{$border-width}px);
        margin-left: calc(-#{$border-size}px + #{$border-width}px);
    }
}