@mixin input-cover() {
    @include position(0, null, null, 0);
    @include margin(0);

    position: absolute;

    width: 100%;
    height: 100%;

    border: 0;
    background: transparent;
    cursor: pointer;

    appearance: none;
    outline: none;
}

@mixin text-inherit() {
    font-family: inherit;
    font-size: inherit;
    font-style: inherit;
    font-weight: inherit;
    letter-spacing: inherit;
    text-decoration: inherit;
    text-overflow: inherit;
    text-transform: inherit;
    text-align: inherit;
    white-space: inherit;
    color: inherit;
}

// Font smoothing
// --------------------------------------------------

@mixin font-smoothing() {
    -moz-osx-font-smoothing: grayscale;
    -webkit-font-smoothing: antialiased;
}

// Get the key from a map based on the index
@function index-to-key($map, $index) {
    $keys: map-keys($map);

    @return nth($keys, $index);
}

// Breakpoint Mixins
// ---------------------------------------------------------------------------------

// Breakpoint viewport sizes and media queries.
//
// Breakpoints are defined as a map of (name: minimum width), order from small to large:
//
//    (xs: 0, sm: 576px, md: 768px, lg: 992px, xl: 1200px)
//
// The map defined in the `$screen-breakpoints` global variable is used as the `$breakpoints` argument by default.

// ---------------------------------------------------------------------------------

// Minimum breakpoint width. Null for the smallest (first) breakpoint.
//
//    >> breakpoint-min(sm, (xs: 0, sm: 576px, md: 768px, lg: 992px, xl: 1200px))
//    576px
@function breakpoint-min($name, $breakpoints: $screen-breakpoints) {
    $min: map-get($breakpoints, $name);

    @return if($name != index-to-key($breakpoints, 1), $min, null);
}

// Returns a blank string if smallest breakpoint, otherwise returns the name with a dash infront.
// Useful for making responsive utilities.
//
//    >> breakpoint-infix(xs, (xs: 0, sm: 576px, md: 768px, lg: 992px, xl: 1200px))
//    ""  (Returns a blank string)
//    >> breakpoint-infix(sm, (xs: 0, sm: 576px, md: 768px, lg: 992px, xl: 1200px))
//    "-sm"
@function breakpoint-infix($name, $breakpoints: $screen-breakpoints) {
    @return if(breakpoint-min($name, $breakpoints) == null, "", "-#{$name}");
}

// Media of at least the minimum breakpoint width. No query for the smallest breakpoint.
// Makes the @content apply to the given breakpoint and wider.
@mixin media-breakpoint-up($name, $breakpoints: $screen-breakpoints) {
    $min: breakpoint-min($name, $breakpoints);
    @if $min {
        @media (min-width: $min) {
            @content;
        }
    } @else {
        @content;
    }
}

// Name of the next breakpoint, or null for the last breakpoint.
//
//    >> breakpoint-next(sm)
//    md
//    >> breakpoint-next(sm, (xs: 0, sm: 576px, md: 768px, lg: 992px, xl: 1200px))
//    md
//    >> breakpoint-next(sm, $breakpoint-names: (xs sm md lg xl))
//    md
@function breakpoint-next($name, $breakpoints: $screen-breakpoints, $breakpoint-names: map-keys($breakpoints)) {
    $n: index($breakpoint-names, $name);
    @return if($n < length($breakpoint-names), nth($breakpoint-names, $n + 1), null);
}

// Maximum breakpoint width. Null for the largest (last) breakpoint.
// The maximum value is calculated as the minimum of the next one less 0.1.
//
//    >> breakpoint-max(sm, (xs: 0, sm: 576px, md: 768px, lg: 992px, xl: 1200px))
//    767px
@function breakpoint-max($name, $breakpoints: $screen-breakpoints) {
    $next: breakpoint-next($name, $breakpoints);
    @return if($next, breakpoint-min($next, $breakpoints) - 1px, null);
}

// Media of at most the maximum breakpoint width. No query for the largest breakpoint.
// Makes the @content apply to the given breakpoint and narrower.
@mixin media-breakpoint-down($name, $breakpoints: $screen-breakpoints) {
    $max: breakpoint-max($name, $breakpoints);
    @if $max {
        @media (max-width: $max) {
            @content;
        }
    } @else {
        @content;
    }
}

// Text Direction - ltr / rtl
// $app-direction: multi | rtl | ltr | null (default)
// multi: Both [dir=ltr] and [dir=rtl] are applied to css selectors.
// rtl: Always assumes rtl and only includes rtl css. No [dir] selectors.
// ltr: Always assumes ltr and only includes ltr css. No [dir] selectors.
// null: CSS defaults to use the ltr css, and adds [dir=rtl] selectors to override ltr defaults.
// ----------------------------------------------------------

@mixin multi-dir() {
    @if $app-direction == multi {
        $root: #{&};
        @at-root [dir] {
            #{$root} {
                @content;
            }
        }
    } @else {
        @content;
    }
}

@mixin rtl() {
    @if $app-direction == multi or $app-direction == null {
        $root: #{&};
        @at-root [dir="rtl"] {
            #{$root} {
                @content;
            }
        }
    } @else if $app-direction == rtl {
        @content;
    }
}

@mixin ltr() {
    @if $app-direction == multi {
        $root: #{&};
        @at-root [dir="ltr"] {
            #{$root} {
                @content;
            }
        }
    } @else if $app-direction == ltr or $app-direction == null {
        @content;
    }
}

// SVG Background Image Mixin
// @param {string} $svg
// ----------------------------------------------------------
@mixin svg-background-image($svg, $flip-rtl: false) {
    $url: url-encode($svg);
    $viewBox: str-split(str-extract($svg, "viewBox='", "'"), " ");

    @if $flip-rtl != true or $viewBox == null {
        @include multi-dir() {
            background-image: url("data:image/svg+xml;charset=utf-8,#{$url}");
        }
    } @else {
        $transform: "transform='translate(#{nth($viewBox, 3)}, 0) scale(-1, 1)'";
        $flipped-url: $svg;
        $flipped-url: str-replace($flipped-url, "<path", "<path #{$transform}");
        $flipped-url: str-replace($flipped-url, "<line", "<line #{$transform}");
        $flipped-url: str-replace($flipped-url, "<polygon", "<polygon #{$transform}");
        $flipped-url: url-encode($flipped-url);

        @include ltr () {
            background-image: url("data:image/svg+xml;charset=utf-8,#{$url}");
        }
        @include rtl() {
            background-image: url("data:image/svg+xml;charset=utf-8,#{$flipped-url}");
        }
    }
}

// Add property horizontal
// @param {string} $start
// @param {string} $end
// ----------------------------------------------------------
@mixin property-horizontal($prop, $start, $end: $start) {
    @if $start == $end {
        @include multi-dir() {
            #{$prop}-left: $start;
            #{$prop}-right: $end;
        }
    } @else {
        @include ltr() {
            #{$prop}-left: $start;
            #{$prop}-right: $end;
        }
        @include rtl() {
            #{$prop}-left: $end;
            #{$prop}-right: $start;
        }
    }
}

// Add property for all directions
// @param {string} $prop
// @param {string} $top
// @param {string} $end
// @param {string} $bottom
// @param {string} $start
// @param {boolean} $content include content or use default
// ----------------------------------------------------------
@mixin property($prop, $top, $end: $top, $bottom: $top, $start: $end) {
    @if $top == $end and $top == $bottom and $top == $start {
        @include multi-dir() {
            #{$prop}: $top;
        }
    } @else if $top == $bottom and $end == $start and $top != null and $end != null {
        @include multi-dir() {
            #{$prop}: $top $end;
        }
    } @else if $end == $start and $top != null and $end != null and $bottom != null {
        @include multi-dir() {
            #{$prop}: $top $end $bottom;
        }
    } @else if $top != null and $end != null and $bottom != null and $start != null {
        @include ltr() {
            #{$prop}: $top $end $bottom $start;
        }
        @include rtl() {
            #{$prop}: $top $start $bottom $end;
        }
    } @else {
        @include property-horizontal($prop, $start, $end);
        @include multi-dir() {
            #{$prop}-top: $top;
            #{$prop}-bottom: $bottom;
        }
    }
}

// Add padding horizontal
// @param {string} $start
// @param {string} $end
// ----------------------------------------------------------
@mixin padding-horizontal($start, $end: $start) {
    @include property-horizontal(padding, $start, $end);
}

// Add padding for all directions
// @param {string} $top
// @param {string} $end
// @param {string} $bottom
// @param {string} $start
// ----------------------------------------------------------
@mixin padding($top, $end: $top, $bottom: $top, $start: $end) {
    @include property(padding, $top, $end, $bottom, $start);
}

// Add margin horizontal
// @param {string} $start
// @param {string} $end
// ----------------------------------------------------------
@mixin margin-horizontal($start, $end: $start) {
    @include property-horizontal(margin, $start, $end);
}

// Add margin for all directions
// @param {string} $top
// @param {string} $end
// @param {string} $bottom
// @param {string} $start
// ----------------------------------------------------------
@mixin margin($top, $end: $top, $bottom: $top, $start: $end) {
    @include property(margin, $top, $end, $bottom, $start);
}

// Add position horizontal
// @param {string} $start - amount to position start
// @param {string} $end - amount to left: 0; end
// ----------------------------------------------------------
@mixin position-horizontal($start: null, $end: null) {
    @if $start == $end {
        @include multi-dir() {
            left: $start;
            right: $end;
        }
    } @else {
        @include ltr() {
            left: $start;
            right: $end;
        }
        @include rtl() {
            left: $end;
            right: $start;
        }
    }
}

// Add position for all directions
// @param {string} $top
// @param {string} $end
// @param {string} $bottom
// @param {string} $start
// ----------------------------------------------------------
@mixin position($top: null, $end: null, $bottom: null, $start: null) {
    @include position-horizontal($start, $end);
    top: $top;
    bottom: $bottom;
}

// Add border radius for all directions
// @param {string} $top-start
// @param {string} $top-end
// @param {string} $bottom-end
// @param {string} $bottom-start
// ----------------------------------------------------------
@mixin border-radius($top-start, $top-end: $top-start, $bottom-end: $top-start, $bottom-start: $top-end) {
    @if $top-start == $top-end and $top-start == $bottom-end and $top-start == $bottom-start {
        @include multi-dir() {
            border-radius: $top-start;
        }
    } @else {
        @include ltr() {
            border-top-left-radius: $top-start;
            border-top-right-radius: $top-end;
            border-bottom-right-radius: $bottom-end;
            border-bottom-left-radius: $bottom-start;
        }

        @include rtl() {
            border-top-left-radius: $top-end;
            border-top-right-radius: $top-start;
            border-bottom-right-radius: $bottom-start;
            border-bottom-left-radius: $bottom-end;
        }
    }
}

// Add direction for all directions
// @param {string} $dir - Direction on LTR
@mixin direction($dir) {
    $other-dir: null;

    @if $dir == ltr {
        $other-dir: rtl;
    } @else {
        $other-dir: ltr;
    }

    @include ltr() {
        direction: $dir;
    }
    @include rtl() {
        direction: $other-dir;
    }
}

// Add float for all directions
// @param {string} $side
// @param {string} $decorator - !important
@mixin float($side, $decorator: null) {
    @if $side == start {
        @include ltr() {
            float: left $decorator;
        }
        @include rtl() {
            float: right $decorator;
        }
    } @else if $side == end {
        @include ltr() {
            float: right $decorator;
        }
        @include rtl() {
            float: left $decorator;
        }
    } @else {
        @include multi-dir() {
            float: $side $decorator;
        }
    }
}

@mixin background-position($horizontal, $horizontal-amount: null, $vertical: null, $vertical-amount: null) {
    @if $horizontal == start or $horizontal == end {
        $horizontal-ltr: null;
        $horizontal-rtl: null;
        @if $horizontal == start {
            $horizontal-ltr: left;
            $horizontal-rtl: right;
        } @else {
            $horizontal-ltr: right;
            $horizontal-rtl: left;
        }

        @include ltr() {
            background-position: $horizontal-ltr $horizontal-amount $vertical $vertical-amount;
        }
        @include rtl() {
            background-position: $horizontal-rtl $horizontal-amount $vertical $vertical-amount;
        }
    } @else {
        @include multi-dir() {
            background-position: $horizontal $horizontal-amount $vertical $vertical-amount;
        }
    }
}

@mixin transform-origin($x-axis, $y-axis: null) {
    @if $x-axis == start {
        @include ltr() {
            transform-origin: left $y-axis;
        }
        @include rtl() {
            transform-origin: right $y-axis;
        }
    } @else if $x-axis == end {
        @include ltr() {
            transform-origin: right $y-axis;
        }
        @include rtl() {
            transform-origin: left $y-axis;
        }
    } @else if $x-axis == left or $x-axis == right {
        @include multi-dir() {
            transform-origin: $x-axis $y-axis;
        }
    } @else {
        @include ltr() {
            transform-origin: $x-axis $y-axis;
        }
        @include rtl() {
            transform-origin: calc(100% - #{$x-axis}) $y-axis;
        }
    }
}

// Add transform for all directions
// @param {string} $transforms - comma separated list of transforms
@mixin transform($transforms...) {
    $extra: null;

    $x: null;
    $ltr-translate: null;
    $rtl-translate: null;

    @each $transform in $transforms {
        @if (str-index($transform, translate3d)) {
            $transform: str-replace($transform, 'translate3d(');
            $transform: str-replace($transform, ')');

            $coordinates: str-split($transform, ',');

            $x: nth($coordinates, 1);
            $y: nth($coordinates, 2);
            $z: nth($coordinates, 3);

            $ltr-translate: translate3d($x, $y, $z);
            $rtl-translate: translate3d(calc(-1 * #{$x}), $y, $z);
        } @else {
            @if $extra == null {
                $extra: $transform;
            } @else {
                $extra: $extra $transform;
            }
        }
    }

    @if $x == '0' or $x == null {
        @include multi-dir() {
            transform: $ltr-translate $extra;
        }
    } @else {
        @include ltr() {
            transform: $ltr-translate $extra;
        }

        @include rtl() {
            transform: $rtl-translate $extra;
        }
    }
}