//----------------------------
//
//  mixins.less v0.1.6
//  http://mixinsless.com/
//  Reuse snippets & Cross-browser private properties snippets.
//----------------------------

// Border radius with the same argument
// -------------------------
.rounded(@radius: 3px) {
  -webkit-border-radius:@radius;
  -moz-border-radius:@radius;
  border-radius:@radius;
  -webkit-background-clip:padding-box;
  -moz-background-clip:padding-box;
  background-clip:padding-box;
}

// Border radius with different arguments
// -------------------------
.border-radius(@topleft: 0, @topright: 0, @bottomright: 0, @bottomleft: 0) {
  -webkit-border-top-left-radius:@topleft;
  -webkit-border-top-right-radius:@topright;
  -webkit-border-bottom-right-radius:@bottomright;
  -webkit-border-bottom-left-radius:@bottomleft;
  -moz-border-radius-topleft:@topleft;
  -moz-border-radius-topright:@topright;
  -moz-border-radius-bottomright:@bottomright;
  -moz-border-radius-bottomleft:@bottomleft;
  border-top-left-radius:@topleft;
  border-top-right-radius:@topright;
  border-bottom-right-radius:@bottomright;
  border-bottom-left-radius:@bottomleft;
  -webkit-background-clip:padding-box;
  -moz-background-clip:padding-box;
  background-clip:padding-box;
}

// Background size
// -------------------------
.background-size(@size) {
  -webkit-background-size:@size;
  -moz-background-size:@size;
  -o-background-size:@size;
  background-size:@size;
}

// Opacity
// -------------------------
.opacity(@opacity) {
  opacity:@opacity;
  @opacityIE : @opacity * 100;
  filter:~"alpha(opacity=@{opacityIE})";
}

// Appearance
// -------------------------
.appearance(@appearance:none) {
  -webkit-appearance:@appearance;
  appearance:@appearance;
}

// Gradient
// -------------------------
.gradient(@start: #000000, @stop: #FFFFFF) {
  background:(@start + @stop)/2;
  background:-webkit-gradient(linear, left top, left bottom, color-stop(0, @start), color-stop(1, @stop));
  background:-moz-linear-gradient(center top, @start 0%, @stop 100%);
}

// Box shadow
// -------------------------
.drop-shadow(@horizontal: 0, @vertical: 1px, @blur: 2px, @alpha: 0.1) {
  -webkit-box-shadow:@horizontal @vertical  @blur rgba(0, 0, 0, @alpha);
  -moz-box-shadow:@horizontal @vertical  @blur rgba(0, 0, 0, @alpha);
  box-shadow:@horizontal @vertical  @blur rgba(0, 0, 0, @alpha);
}

// Box shadow inset
// -------------------------
.inner-shadow(@horizontal: 0, @vertical: 1px, @blur: 2px, @alpha: 0.4) {
  -webkit-box-shadow:inset @horizontal @vertical @blur rgba(0, 0, 0, @alpha);
  -moz-box-shadow:inset @horizontal @vertical @blur rgba(0, 0, 0, @alpha);
  box-shadow:inset @horizontal @vertical @blur rgba(0, 0, 0, @alpha);
}

// Box inner border
// -------------------------
.inner-border(@width: 1px, @color: #000) {
  -webkit-box-shadow:inset 0 0 0 @width @color;
  -moz-box-shadow:inset 0 0 0 @width @color;
  box-shadow:inset 0 0 0 @width @color;
}

// Box shadow default
// -------------------------
.box-shadow(@arguments) {
  -webkit-box-shadow:@arguments;
  -moz-box-shadow:@arguments;
  box-shadow:@arguments;
}

// Animation
// -------------------------
.animation(@animation) {
  -webkit-animation:@animation;
  -moz-animation:@animation;
  animation:@animation;
}

.transition(@transition) {
  -webkit-transition:@transition;
  -moz-transition:@transition;
  -o-transition:@transition;
  transition:@transition;
}
.transition-delay(@transition-delay) {
  -webkit-transition-delay:@transition-delay;
  -moz-transition-delay:@transition-delay;
  -o-transition-delay:@transition-delay;
  transition-delay:@transition-delay;
}
.transition-duration(@transition-duration) {
  -webkit-transition-duration:@transition-duration;
  -moz-transition-duration:@transition-duration;
  -o-transition-duration:@transition-duration;
  transition-duration:@transition-duration;
}

// Transform
// -------------------------
.transform(@arguments) {
  -webkit-transform:@arguments;
  -moz-transform:@arguments;
  transform:@arguments;
}

// Transform rotation
// -------------------------
.rotation(@deg:5deg) {
  -webkit-transform:rotate(@deg);
  -moz-transform:rotate(@deg);
  transform:rotate(@deg);
}

// Transform scale
// -------------------------
.scale(@ratio:1.5) {
  -webkit-transform:scale(@ratio);
  -moz-transform:scale(@ratio);
  transform:scale(@ratio);
}

// Translate
// -------------------------
.translate(@x:0, @y:0) {
  -moz-transform:translate(@x, @y);
  -webkit-transform:translate(@x, @y);
  -o-transform:translate(@x, @y);
  -ms-transform:translate(@x, @y);
  transform:translate(@x, @y);
}

// Translate3d
// -------------------------
.translate3d(@x, @y, @z) {
  -webkit-transform:translate3d(@x, @y, @z);
  -moz-transform:translate3d(@x, @y, @z);
  -o-transform:translate3d(@x, @y, @z);
  transform:translate3d(@x, @y, @z);
}

// Background clipping
// -------------------------
.background-clip(@clip) {
  -webkit-background-clip:@clip;
  -moz-background-clip:@clip;
  background-clip:@clip;
}

// CSS columns
// -------------------------
.columns(@colwidth: 250px, @colcount: 0, @colgap: 50px, @columnRuleColor: #EEEEEE, @columnRuleStyle: solid, @columnRuleWidth: 1px) {
  -moz-column-width:@colwidth;
  -moz-column-count:@colcount;
  -moz-column-gap:@colgap;
  -moz-column-rule-color:@columnRuleColor;
  -moz-column-rule-style:@columnRuleStyle;
  -moz-column-rule-width:@columnRuleWidth;
  -webkit-column-width:@colwidth;
  -webkit-column-count:@colcount;
  -webkit-column-gap:@colgap;
  -webkit-column-rule-color:@columnRuleColor;
  -webkit-column-rule-style:@columnRuleStyle;
  -webkit-column-rule-width:@columnRuleWidth;
  column-width:@colwidth;
  column-count:@colcount;
  column-gap:@colgap;
  column-rule-color:@columnRuleColor;
  column-rule-style:@columnRuleStyle;
  column-rule-width:@columnRuleWidth;
}

// Import font
// -------------------------
.font-face(@fontFamily, @fileName, @style, @weight) {
  @font-face{
    font-family:@fontFamily;
    font-style:@style;
    font-weight:@weight;
    src:url('@{fileName}.eot');
    src:local('@fontFamily'), url('@{fileName}.eot?#iefix') format('embedded-opentype'), url('@{fileName}.woff') format('woff'), url('@{fileName}.ttf') format('truetype'), url('@{fileName}.svg#@{fontFamily}') format('svg'), url("@{fileName}.otf") format('opentype');
  }
}

// Clearfix
// -------------------------
.clearfix() {
  zoom:1;
  &:before{
    content:'';
    display:block;
  }
  &:after{
    content:'';
    display:table;
    clear:both;
  }
}

// CSS image replacement
// -------------------------
// Source: https://github.com/h5bp/html5-boilerplate/commit/aa0396eae757
.hide-text() {
  font:0/0 a;
  color:transparent;
  text-shadow:none;
  background-color:transparent;
  border:0;
}

// Force line breaks
// -------------------------
.word-break() {
  word-break:break-all;
  word-wrap:break-word;
    white-space: normal;
}

// No wrap
// -------------------------
.no-wrap() {
    word-break: normal;
    word-wrap: normal;
    white-space: nowrap;
}

// Text overflow with(...)
// -------------------------
// Requires inline-block or block for proper styling
.text-overflow() {
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
  max-width:100%;
}

.line-overflow(@line) {
  overflow:hidden;
  text-overflow:ellipsis;
  display:-webkit-box;
  -webkit-line-clamp:@line; /* number of lines to show */
  -webkit-box-orient:vertical;
}

// Creates a wrapper for a series of columns
// -------------------------
.lay-row() {
  // Negative margin the row out to align the content of columns
  margin-left:  (@grid-gutter-width / -2);
  margin-right: (@grid-gutter-width / -2);
  // Then clear the floated columns
  .clearfix();
}

// Generate the columns
// -------------------------
.lay-column(@columns) {
  @media (min-width: @grid-float-breakpoint) {
    float: left;
    // Calculate width based on number of columns available
    width: percentage(@columns / @grid-columns);
  }
  // Prevent columns from collapsing when empty
  min-height: 1px;
  // Set inner padding as gutters instead of margin
  padding-left:  (@grid-gutter-width / 2);
  padding-right: (@grid-gutter-width / 2);
}

// Generate the column offsets
// -------------------------
.lay-column-offset(@columns) {
  @media (min-width: @grid-float-breakpoint) {
    margin-left: percentage((@columns / @grid-columns));
  }
}

// Alpha background
// -------------------------
.alpha-background(@rgb:#000,@alpha:.5){
  @rgba-color:fade(@rgb,@alpha*100);
  @argb-color:argb(@rgba-color);
  background-color:@rgba-color;
  filter:~"progid:DXImageTransform.Microsoft.gradient(startColorstr='@{argb-color}', endColorstr='@{argb-color}', GradientType=0)";
  zoom:1;
  :root &{
    filter: none;
  }
}

// Controls the selection model of an element.
// -------------------------
.user-select(@arguments:none){
  -webkit-user-select: @arguments;
  -moz-user-select: @arguments;
  -ms-user-select: @arguments;
  user-select: @arguments;
}

// Flexbox display
// -------------------------
// flex or inline-flex
.flex-display(@display: flex) {
  display: ~"-webkit-@{display}";
  display: ~"-moz-@{display}";
  display: @display;
}

// Triangle
// -------------------------
.triangle(@direction: down, @size: 10px, @color: #000){
  display: inline-block;
  width: 0;
  height: 0;
  font-size: 0;
  line-height: 0;
  overflow: hidden;
}
.triangle(@direction: down, @size: 10px, @color: #000) when (@direction = down){
  border-color: @color transparent transparent transparent;
  border-style: solid dashed dashed dashed;
  border-width: @size @size 0 @size;
}
.triangle(@direction: down, @size: 10px, @color: #000) when(@direction = left){
  border-color: transparent @color transparent transparent;
  border-style: dashed solid dashed dashed;
  border-width: @size @size @size 0;
}
.triangle(@direction: down, @size: 10px, @color: #000) when(@direction = up){
  border-color: transparent transparent @color transparent;
  border-style: dashed dashed solid dashed;
  border-width: 0 @size @size @size;
}
.triangle(@direction: down, @size: 10px, @color: #000) when(@direction = right){
  border-color: transparent transparent transparent @color;
  border-style: dashed dashed dashed solid;
  border-width: @size 0 @size @size;
}

// Arrow
// -------------------------
.arrow(@direction: down, @size: 10px, @color: #000, @borderColor: #c00){
  position: absolute;
  width: 0;
  height: 0;
  font-size: 0;
  &:after{
    content: '';
    position: absolute;
    width: 0;
    height: 0;
    font-size: 0;
  }
}
.arrow(@direction: down, @size: 10px, @color: #fff, @borderColor: #ccc) when (@direction = down){
  border-color: @borderColor transparent transparent transparent;
  border-style: solid dashed dashed dashed;
  border-width: @size @size 0 @size;
  &:after{
    left: -@size;
    top: -(@size+1);
    border-color: @color transparent transparent transparent;
    border-style: solid dashed dashed dashed;
    border-width: @size @size 0 @size;
  }
}
.arrow(@direction: down, @size: 10px, @color: #fff, @borderColor: #ccc) when (@direction = left){
  border-color: transparent @borderColor transparent transparent;
  border-style: dashed solid dashed dashed;
  border-width: @size @size @size 0;
  &:after{
    left: 1px;
    top: -@size;
    border-color: transparent @color transparent transparent;
    border-style: dashed solid dashed dashed;
    border-width: @size @size @size 0;
  }
}
.arrow(@direction: down, @size: 10px, @color: #fff, @borderColor: #ccc) when (@direction = up){
  border-color: transparent transparent @borderColor transparent;
  border-style: dashed dashed solid dashed;
  border-width: 0 @size @size @size;
  &:after{
    left: -@size;
    top: 1px;
    border-color: transparent transparent @color transparent;
    border-style: dashed dashed solid dashed;
    border-width: 0 @size @size @size;
  }
}
.arrow(@direction: down, @size: 10px, @color: #fff, @borderColor: #ccc) when (@direction = right){
  border-color: transparent transparent transparent @borderColor;
  border-style: dashed dashed dashed solid;
  border-width: @size 0 @size @size;
  &:after{
    left: -(@size+1);
    top: -@size;
    border-color: transparent transparent transparent @color;
    border-style: dashed dashed dashed solid;
    border-width: @size 0 @size @size;
  }
}

// fix background-image with `./img/xxx.png` in REM support option.
.rem-bg(){
  background-repeat: no-repeat;
  background-position: center;
  background-size: 100%;
}