/*!
                                                                                                                                                                                                       
                                                                                                                                                                                                       
                                                                                                                                                                                                       
                                                                                                                                                                                                       
                                                                                                                                                                                                       
                                                                                                                                                                                                       
                                                                                                                                                                                                       
                                                                                                                                                                                                       
                                                                                                                                                                                                       
                                                                                                                                                                                                       
                                                                                                                                                                                                       
                                                                                                                                                                                                       
                                                                                                                                                                                                       
                                                                                                                                                                                                       
                                                                                                                                                                                                       
                                                                                                                                                                                                       
                                                                                                                                                                                                       
                                                                                                                                                                                                       
                                                                                                                                                                                                       
                                                                                                                                                                                                       
                                                                                                                                                                                                       

*/
.flexbox() {
    display: flex;
}

.flexbox(@type) {
    display: ~"@{type}-flex";
}

.animation(...) {
    animation: @arguments;
}

.animation-delay(...) {
    animation-delay: @arguments;
}

.flex-direction(@direction) {
    flex-direction: @direction;
}

.flex-wrap(@wrap) {
    flex-wrap: @wrap;
}

.flex(@amount) {
    flex: @amount;
}

.flex-align(@alignment) {
    flex-align: @alignment;
}

.flex-align-items(@alignment) {
    align-items: @alignment;
}

.flex-align-content(@alignment) {
    align-content: @alignment;
}

.flex-pack(@pack) {
    flex-pack: @pack;
}

.text-size-adjust(...) {
    text-size-adjust: @arguments;
}

.prohibit-selection() {
    user-select: none;
}

.disable-high-contrast() {
    -ms-high-contrast-adjust: none;
}

.box-sizing(@sizing) {
    box-sizing: @sizing;
}

.button-inner-size( @multiplier: 1 ) {
    @button-inner-size: ~"calc( (2 * @{button-padding-y} + @{line-height}) * @{multiplier} )";
}

.button-size( @multiplier: 1, @button-border-width: 1px ) {
    @button-size: ~"calc( (2 * @{button-border-width} + 2 * @{button-padding-y} + @{line-height}) * @{multiplier} )";
}

.transform(...) {
    transform: @arguments;
}

.transform-origin(...) {
    transform-origin: @arguments;
}

.transform-style(...) {
    transform-style: @arguments;
}

.guarded-border-radius(@value) when (@value < 0) {
    border-radius: 0;
}

.guarded-border-radius(@value) when (@value >= 0) {
    border-radius: @value;
}

.box-shadow(@shadow; @rest...) when not (@shadow = false) {
    box-shadow: @arguments;
}

.window-shadow(@shadow-color) when not (@shadow-color = transparent) {
    border-color: @shadow-color;
    .box-shadow(@window-shadow-style lighten(@shadow-color, 50%));

    &.k-state-focused {
        border-color: @shadow-color;
        .box-shadow(@window-shadow-style @shadow-color);
    }
}

.window-shadow(@shadow-color) when (@shadow-color = transparent) and (lightness(@widget-background-color) < 50%) {
    border-color: @widget-border-color;

    &.k-state-focused {
        border-color: lighten(@widget-border-color, 20%);
    }
}

.window-shadow(@shadow-color) when (@shadow-color = transparent) and (lightness(@widget-background-color) >= 50%) {
    border-color: @widget-border-color;

    &.k-state-focused {
        border-color: darken(@widget-border-color, 10%);
    }
}

.background-clip(@type) {
    background-clip: @type;
}

.composite-background(@gradient) when (@gradient = none) {
    background-image: @texture;
}


.composite-background(@gradient) when not (@gradient = none) and not (@gradient = false) {
    background-image: @fallback-texture;
    background-image: @texture, ~"linear-gradient(to bottom, @{gradient})";
}

.selection(@color) {
    ::selection {
        background-color: @color;
        text-shadow: none;
        color: #fff;
    }

    ::-moz-selection {
        background-color: @color;
        text-shadow: none;
        color: #fff;
    }
}

.use-font-icon() {
    position: relative;
    display: inline-block;
    overflow: hidden;
    width: 1em;
    height: 1em;
    text-align: center;
    vertical-align: middle;
    background-image: none;
    font: 16px/1 'WebComponentsIcons';
    speak: none;
    font-variant: normal;
    text-transform: none;
    text-indent: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}


.border-radius( @border-radius ) {
    border-radius: @border-radius;
}
.border-top-radius( @border-radius ) {
    border-top-left-radius: @border-radius;
    border-top-right-radius: @border-radius;
}
.border-right-radius( @border-radius ) {
    border-top-right-radius: @border-radius;
    border-bottom-right-radius: @border-radius;
}
.border-bottom-radius( @border-radius ) {
    border-bottom-right-radius: @border-radius;
    border-bottom-left-radius: @border-radius;
}
.border-left-radius( @border-radius ) {
    border-bottom-left-radius: @border-radius;
    border-top-left-radius: @border-radius;
}


.color(@text) when not (@text = null) {
    color: @text;
}
.background-color(@bg) when not (@bg = null) {
    background-color: @bg;
}
.border-color(@border) when not (@border = null) {
    border-color: @border;
}
.fill(@text: null, @bg: null, @border: null) {
    .border-color(@border);
    .color(@text);
    .background-color(@bg);
}
