// Mixins.less
// Snippets of reusable CSS to develop faster and keep code readable
// -----------------------------------------------------------------


// UTILITY MIXINS
// --------------------------------------------------

// Clearfix
// --------
// For clearing floats like a boss h5bp.com/q
@mixin clearfix() {
  *zoom: 1;
  &:before,
  &:after {
    display: table;
    content: "";
  }
  &:after {
    clear: both;
  }
}

// Webkit-style focus
// ------------------
@mixin tab-focus() {
  // Default
  outline: thin dotted;
  // Webkit
  outline: 5px auto -webkit-focus-ring-color;
  outline-offset: -2px;
}

// Center-align a block level element
// ----------------------------------
@mixin center-block() {
  display: block;
  margin-left: auto;
  margin-right: auto;
}

// IE7 inline-block
// ----------------
@mixin ie7-inline-block() {
  *display: inline; /* IE7 inline-block hack */
  *zoom: 1;
}

// IE7 likes to collapse whitespace on either side of the inline-block elements.
// Ems because we're attempting to match the width of a space character. Left
// version is for form buttons, which typically come after other elements, and
// right version is for icons, which come before. Applying both is ok, but it will
// mean that space between those elements will be .6em (~2 space characters) in IE7,
// instead of the 1 space in other browsers.
@mixin ie7-restore-left-whitespace() {
  *margin-left: .3em;

  &:first-child {
    *margin-left: 0;
  }
}

@mixin ie7-restore-right-whitespace() {
  *margin-right: .3em;

  &:last-child {
    *margin-left: 0;
  }
}

// Sizing shortcuts
// -------------------------
@mixin size($height: 5px, $width: 5px) {
  width: $width;
  height: $height;
}
@mixin square($size: 5px) {
  @include size($size, $size);
}

// Placeholder text
// -------------------------
@mixin placeholder($color: $placeholderText) {
  :-moz-placeholder {
    color: $color;
  }
  ::-webkit-input-placeholder {
    color: $color;
  }
}



// FONTS
// --------------------------------------------------

@mixin font-family-serif() {
      font-family: Georgia, "Times New Roman", Times, serif;
    }
@mixin font-family-sans-serif() {
      font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
    }
@mixin font-family-monospace() {
      font-family: Menlo, Monaco, "Courier New", monospace;
    }
  @mixin font-shorthand($size: $baseFontSize, $weight: normal, $lineHeight: $baseLineHeight) {
    font-size: $size;
    font-weight: $weight;
    line-height: $lineHeight;
  }
  @mixin font-serif($size: $baseFontSize, $weight: normal, $lineHeight: $baseLineHeight) {
    @include font-family-serif();
    @include font-shorthand($size, $weight, $lineHeight);
  }
  @mixin font-sans-serif($size: $baseFontSize, $weight: normal, $lineHeight: $baseLineHeight) {
    @include font-family-sans-serif();
    @include font-shorthand($size, $weight, $lineHeight);
  }
  @mixin monospace($size: $baseFontSize, $weight: normal, $lineHeight: $baseLineHeight) {
    @include font-family-monospace();
    @include font-shorthand($size, $weight, $lineHeight);
  }



// GRID SYSTEM
// --------------------------------------------------

// Site container
// -------------------------
@mixin container-fixed() {
  width: $gridRowWidth;
  margin-left: auto;
  margin-right: auto;
  @include clearfix();
}

// Le grid system
// -------------------------
  // Setup the mixins to be used
  @mixin gridSystem-columns($gridGutterWidth, $gridColumnWidth, $gridRowWidth, $columns) {
    width: ($gridColumnWidth * $columns) + ($gridGutterWidth * ($columns - 1));
  } 
  @mixin gridSystem-offset($gridColumnWidth, $gridGutterWidth, $columns) {
    margin-left: ($gridColumnWidth * $columns) + ($gridGutterWidth * ($columns - 1)) + ($gridGutterWidth * 2);
  }
  @mixin gridSystem-gridColumn($gridGutterWidth) {
    float: left;
    margin-left: $gridGutterWidth;
  }
  // Take these values and mixins, and make 'em do their thang
  @mixin gridSystem-generate($gridColumns, $gridColumnWidth, $gridGutterWidth) {
    // Row surrounds the columns
    .row {
      margin-left: $gridGutterWidth * -1;
      @include clearfix();
    }
    // Find all .span# classes within .row and give them the necessary properties for grid columns (supported by all browsers back to IE7, thanks $dhg)
    [class*="span"] {
      @include gridSystem-gridColumn($gridGutterWidth);
    }
    // Default columns
    .span1     { @include gridSystem-columns($gridGutterWidth, $gridColumnWidth, $gridRowWidth, 1); }
    .span2     { @include gridSystem-columns($gridGutterWidth, $gridColumnWidth, $gridRowWidth, 2); }
    .span3     { @include gridSystem-columns($gridGutterWidth, $gridColumnWidth, $gridRowWidth, 3); }
    .span4     { @include gridSystem-columns($gridGutterWidth, $gridColumnWidth, $gridRowWidth, 4); }
    .span5     { @include gridSystem-columns($gridGutterWidth, $gridColumnWidth, $gridRowWidth, 5); }
    .span6     { @include gridSystem-columns($gridGutterWidth, $gridColumnWidth, $gridRowWidth, 6); }
    .span7     { @include gridSystem-columns($gridGutterWidth, $gridColumnWidth, $gridRowWidth, 7); }
    .span8     { @include gridSystem-columns($gridGutterWidth, $gridColumnWidth, $gridRowWidth, 8); }
    .span9     { @include gridSystem-columns($gridGutterWidth, $gridColumnWidth, $gridRowWidth, 9); }
    .span10    { @include gridSystem-columns($gridGutterWidth, $gridColumnWidth, $gridRowWidth, 10); }
    .span11    { @include gridSystem-columns($gridGutterWidth, $gridColumnWidth, $gridRowWidth, 11); }
    .span12,
    .container { @include gridSystem-columns($gridGutterWidth, $gridColumnWidth, $gridRowWidth, 12); }
    // Offset column options
    .offset1   { @include gridSystem-offset($gridColumnWidth, $gridGutterWidth, 1); }
    .offset2   { @include gridSystem-offset($gridColumnWidth, $gridGutterWidth, 2); }
    .offset3   { @include gridSystem-offset($gridColumnWidth, $gridGutterWidth, 3); }
    .offset4   { @include gridSystem-offset($gridColumnWidth, $gridGutterWidth, 4); }
    .offset5   { @include gridSystem-offset($gridColumnWidth, $gridGutterWidth, 5); }
    .offset6   { @include gridSystem-offset($gridColumnWidth, $gridGutterWidth, 6); }
    .offset7   { @include gridSystem-offset($gridColumnWidth, $gridGutterWidth, 7); }
    .offset8   { @include gridSystem-offset($gridColumnWidth, $gridGutterWidth, 8); }
    .offset9   { @include gridSystem-offset($gridColumnWidth, $gridGutterWidth, 9); }
    .offset10  { @include gridSystem-offset($gridColumnWidth, $gridGutterWidth, 10); }
    .offset11  { @include gridSystem-offset($gridColumnWidth, $gridGutterWidth, 11); }
  }

// Fluid grid system
// -------------------------
  // Setup the mixins to be used
  @mixin fluidGridSystem-columns($fluidGridGutterWidth, $fluidGridColumnWidth, $columns) {
    width: ($fluidGridColumnWidth * $columns) + ($fluidGridGutterWidth * ($columns - 1));
  } 
  @mixin fluidGridSystem-gridColumn($fluidGridGutterWidth) {
    float: left;
    margin-left: $fluidGridGutterWidth;
  }
  // Take these values and mixins, and make 'em do their thang
  @mixin fluidGridSystem-generate($gridColumns, $fluidGridColumnWidth, $fluidGridGutterWidth) {      
    // Row surrounds the columns
    .row-fluid {
      width: 100%;
      @include clearfix();

      // Find all .span# classes within .row and give them the necessary properties for grid columns (supported by all browsers back to IE7, thanks $dhg)
      > [class*="span"] {
        @include fluidGridSystem-gridColumn($fluidGridGutterWidth);
      }
      > [class*="span"]:first-child {
        margin-left: 0;
      }
      // Default columns
      .span1     { @include fluidGridSystem-columns($fluidGridGutterWidth, $fluidGridColumnWidth, 1); }
      .span2     { @include fluidGridSystem-columns($fluidGridGutterWidth, $fluidGridColumnWidth, 2); }
      .span3     { @include fluidGridSystem-columns($fluidGridGutterWidth, $fluidGridColumnWidth, 3); }
      .span4     { @include fluidGridSystem-columns($fluidGridGutterWidth, $fluidGridColumnWidth, 4); }
      .span5     { @include fluidGridSystem-columns($fluidGridGutterWidth, $fluidGridColumnWidth, 5); }
      .span6     { @include fluidGridSystem-columns($fluidGridGutterWidth, $fluidGridColumnWidth, 6); }
      .span7     { @include fluidGridSystem-columns($fluidGridGutterWidth, $fluidGridColumnWidth, 7); }
      .span8     { @include fluidGridSystem-columns($fluidGridGutterWidth, $fluidGridColumnWidth, 8); }
      .span9     { @include fluidGridSystem-columns($fluidGridGutterWidth, $fluidGridColumnWidth, 9); }
      .span10    { @include fluidGridSystem-columns($fluidGridGutterWidth, $fluidGridColumnWidth, 10); }
      .span11    { @include fluidGridSystem-columns($fluidGridGutterWidth, $fluidGridColumnWidth, 11); }
      .span12    { @include fluidGridSystem-columns($fluidGridGutterWidth, $fluidGridColumnWidth, 12); }
    }
  }



// Input grid system
// -------------------------
  @mixin inputGridSystem-inputColumns($gridGutterWidth, $gridColumnWidth, $gridRowWidth, $columns) {
    width: (($gridColumnWidth) * $columns) + ($gridGutterWidth * ($columns - 1)) - 10;
  }
  @mixin inputGridSystem-generate($gridColumns, $gridColumnWidth, $gridGutterWidth) {
    input,
    textarea,
    .uneditable-input {
      &.span1     { @include inputGridSystem-inputColumns($gridGutterWidth, $gridColumnWidth, $gridRowWidth, 1); }
      &.span2     { @include inputGridSystem-inputColumns($gridGutterWidth, $gridColumnWidth, $gridRowWidth, 2); }
      &.span3     { @include inputGridSystem-inputColumns($gridGutterWidth, $gridColumnWidth, $gridRowWidth, 3); }
      &.span4     { @include inputGridSystem-inputColumns($gridGutterWidth, $gridColumnWidth, $gridRowWidth, 4); }
      &.span5     { @include inputGridSystem-inputColumns($gridGutterWidth, $gridColumnWidth, $gridRowWidth, 5); }
      &.span6     { @include inputGridSystem-inputColumns($gridGutterWidth, $gridColumnWidth, $gridRowWidth, 6); }
      &.span7     { @include inputGridSystem-inputColumns($gridGutterWidth, $gridColumnWidth, $gridRowWidth, 7); }
      &.span8     { @include inputGridSystem-inputColumns($gridGutterWidth, $gridColumnWidth, $gridRowWidth, 8); }
      &.span9     { @include inputGridSystem-inputColumns($gridGutterWidth, $gridColumnWidth, $gridRowWidth, 9); }
      &.span10    { @include inputGridSystem-inputColumns($gridGutterWidth, $gridColumnWidth, $gridRowWidth, 10); }
      &.span11    { @include inputGridSystem-inputColumns($gridGutterWidth, $gridColumnWidth, $gridRowWidth, 11); }
      &.span12    { @include inputGridSystem-inputColumns($gridGutterWidth, $gridColumnWidth, $gridRowWidth, 12); }
    }
  }



// CSS3 PROPERTIES
// --------------------------------------------------

// Border Radius
@mixin border-radius($radius: 5px) {
  -webkit-border-radius: $radius;
     -moz-border-radius: $radius;
          border-radius: $radius;
}

// Drop shadows
@mixin box-shadow($shadow: 0 1px 3px rgba(0,0,0,.25)) {
  -webkit-box-shadow: $shadow;
     -moz-box-shadow: $shadow;
          box-shadow: $shadow;
}

// Transitions
@mixin transition($transition) {
  -webkit-transition: $transition;
     -moz-transition: $transition;
      -ms-transition: $transition;
       -o-transition: $transition;
          transition: $transition;
}

// Transformations
@mixin rotate($degrees) {
  -webkit-transform: rotate($degrees);
     -moz-transform: rotate($degrees);
      -ms-transform: rotate($degrees);
       -o-transform: rotate($degrees);
          transform: rotate($degrees);
}
@mixin scale($ratio) {
  -webkit-transform: scale($ratio);
     -moz-transform: scale($ratio);
      -ms-transform: scale($ratio);
       -o-transform: scale($ratio);
          transform: scale($ratio);
}
@mixin translate($x: 0, $y: 0) {
  -webkit-transform: translate($x, $y);
     -moz-transform: translate($x, $y);
      -ms-transform: translate($x, $y);
       -o-transform: translate($x, $y);
          transform: translate($x, $y);
}
@mixin skew($x: 0, $y: 0) {
  -webkit-transform: translate($x, $y);
     -moz-transform: translate($x, $y);
      -ms-transform: translate($x, $y);
       -o-transform: translate($x, $y);
          transform: translate($x, $y);
}
@mixin skew($x: 0, $y: 0) {
  -webkit-transform: skew($x, $y);
     -moz-transform: skew($x, $y);
      -ms-transform: skew($x, $y);
       -o-transform: skew($x, $y);
          transform: skew($x, $y);
}

// Background clipping
// Heads up: FF 3.6 and under need "padding" instead of "padding-box"
@mixin background-clip($clip) {
  -webkit-background-clip: $clip;
     -moz-background-clip: $clip;
          background-clip: $clip;
}

// Background sizing
@mixin background-size($size){
  -webkit-background-size: $size;
     -moz-background-size: $size;
       -o-background-size: $size;
          background-size: $size;
}


// Box sizing
@mixin box-sizing($boxmodel) {
  -webkit-box-sizing: $boxmodel;
     -moz-box-sizing: $boxmodel;
          box-sizing: $boxmodel;
}

// User select
// For selecting text on the page
@mixin user-select($select) {
  -webkit-user-select: $select;
     -moz-user-select: $select;
       -o-user-select: $select;
          user-select: $select;
}

// Resize anything
@mixin resizable($direction: both) {
  resize: $direction; // Options: horizontal, vertical, both
  overflow: auto; // Safari fix
}

// CSS3 Content Columns
@mixin content-columns($columnCount, $columnGap: $gridColumnGutter) {
  -webkit-column-count: $columnCount;
     -moz-column-count: $columnCount;
          column-count: $columnCount;
  -webkit-column-gap: $columnGap;
     -moz-column-gap: $columnGap;
          column-gap: $columnGap;
}

// Opacity
@mixin opacity($opacity: 100) {
  opacity: $opacity / 100;
  filter: alpha(opacity=$opacity);
}



// BACKGROUNDS
// --------------------------------------------------

// Add an alphatransparency value to any background or border color (via Elyse Holladay)
  @mixin translucent-background($color: $white, $alpha: 1) {
    background-color: hsla(hue($color), saturation($color), lightness($color), $alpha);
  }
  @mixin translucent-border($color: $white, $alpha: 1) {
    border-color: hsla(hue($color), saturation($color), lightness($color), $alpha);
    @include background-clip(padding-box);
  }

// Gradient Bar Colors for buttons and alerts
@mixin gradientBar($primaryColor, $secondaryColor) {
  @include gradient-vertical($primaryColor, $secondaryColor);
  border-color: $secondaryColor $secondaryColor darken($secondaryColor, 15%);
  border-color: rgba(0,0,0,.1) rgba(0,0,0,.1) fadein(rgba(0,0,0,.1), 15%);
}

// Gradients
  @mixin gradient-horizontal($startColor: #555, $endColor: #333) {
    background-color: $endColor;
    background-image: -moz-linear-gradient(left, $startColor, $endColor); // FF 3.6+
    background-image: -ms-linear-gradient(left, $startColor, $endColor); // IE10
    background-image: -webkit-gradient(linear, 0 0, 100% 0, from($startColor), to($endColor)); // Safari 4+, Chrome 2+
    background-image: -webkit-linear-gradient(left, $startColor, $endColor); // Safari 5.1+, Chrome 10+
    background-image: -o-linear-gradient(left, $startColor, $endColor); // Opera 11.10
    background-image: linear-gradient(left, $startColor, $endColor); // Le standard
    background-repeat: repeat-x;
    filter: progid:DXImageTransform.Microsoft.gradient(startColorstr=#{ie-hex-str($startColor)}, endColorstr=#{ie-hex-str($endColor)}, GradientType=1); // IE9 and down
  }
  @mixin gradient-vertical($startColor: #555, $endColor: #333) {
    background-color: mix($startColor, $endColor, 60%);
    background-image: -moz-linear-gradient(top, $startColor, $endColor); // FF 3.6+
    background-image: -ms-linear-gradient(top, $startColor, $endColor); // IE10
    background-image: -webkit-gradient(linear, 0 0, 0 100%, from($startColor), to($endColor)); // Safari 4+, Chrome 2+
    background-image: -webkit-linear-gradient(top, $startColor, $endColor); // Safari 5.1+, Chrome 10+
    background-image: -o-linear-gradient(top, $startColor, $endColor); // Opera 11.10
    background-image: linear-gradient(top, $startColor, $endColor); // The standard
    background-repeat: repeat-x;
    filter: progid:DXImageTransform.Microsoft.gradient(startColorstr=#{ie-hex-str($startColor)}, endColorstr=#{ie-hex-str($endColor)}, GradientType=0); // IE9 and down
  }
  @mixin gradient-directional($startColor: #555, $endColor: #333, $deg: 45deg) {
    background-color: $endColor;
    background-repeat: repeat-x;
    background-image: -moz-linear-gradient($deg, $startColor, $endColor); // FF 3.6+
    background-image: -ms-linear-gradient($deg, $startColor, $endColor); // IE10
    background-image: -webkit-linear-gradient($deg, $startColor, $endColor); // Safari 5.1+, Chrome 10+
    background-image: -o-linear-gradient($deg, $startColor, $endColor); // Opera 11.10
    background-image: linear-gradient($deg, $startColor, $endColor); // The standard
  }
  @mixin gradient-vertical-three-colors($startColor: #00b3ee, $midColor: #7a43b6, $colorStop: 50%, $endColor: #c3325f) {
    background-color: mix($midColor, $endColor, 80%);
    background-image: -webkit-gradient(linear, 0 0, 0 100%, from($startColor), color-stop($colorStop, $midColor), to($endColor));
    background-image: -webkit-linear-gradient($startColor, $midColor $colorStop, $endColor);
    background-image: -moz-linear-gradient(top, $startColor, $midColor $colorStop, $endColor);
    background-image: -ms-linear-gradient($startColor, $midColor $colorStop, $endColor);
    background-image: -o-linear-gradient($startColor, $midColor $colorStop, $endColor);
    background-image: linear-gradient($startColor, $midColor $colorStop, $endColor);
    background-repeat: no-repeat;
    filter: progid:DXImageTransform.Microsoft.gradient(startColorstr=#{ie-hex-str($startColor)}, endColorstr=#{ie-hex-str($endColor)}, GradientType=0); // IE9 and down, gets no color-stop at all for proper fallback
  }
  @mixin gradient-radial($innerColor: #555, $outerColor: #333)  {
    background-color: $outerColor;
    background-image: -webkit-gradient(radial, center center, 0, center center, 460, from($innerColor), to($outerColor));
    background-image: -webkit-radial-gradient(circle, $innerColor, $outerColor);
    background-image: -moz-radial-gradient(circle, $innerColor, $outerColor);
    background-image: -ms-radial-gradient(circle, $innerColor, $outerColor);
    background-repeat: no-repeat;
    // Opera cannot do radial gradients yet
  }
  @mixin gradient-striped($color, $angle: -45deg) {
    background-color: $color;
    background-image: -webkit-gradient(linear, 0 100%, 100% 0, color-stop(.25, rgba(255,255,255,.15)), color-stop(.25, transparent), color-stop(.5, transparent), color-stop(.5, rgba(255,255,255,.15)), color-stop(.75, rgba(255,255,255,.15)), color-stop(.75, transparent), to(transparent));
    background-image: -webkit-linear-gradient($angle, rgba(255,255,255,.15) 25%, transparent 25%, transparent 50%, rgba(255,255,255,.15) 50%, rgba(255,255,255,.15) 75%, transparent 75%, transparent);
    background-image: -moz-linear-gradient($angle, rgba(255,255,255,.15) 25%, transparent 25%, transparent 50%, rgba(255,255,255,.15) 50%, rgba(255,255,255,.15) 75%, transparent 75%, transparent);
    background-image: -ms-linear-gradient($angle, rgba(255,255,255,.15) 25%, transparent 25%, transparent 50%, rgba(255,255,255,.15) 50%, rgba(255,255,255,.15) 75%, transparent 75%, transparent);
    background-image: -o-linear-gradient($angle, rgba(255,255,255,.15) 25%, transparent 25%, transparent 50%, rgba(255,255,255,.15) 50%, rgba(255,255,255,.15) 75%, transparent 75%, transparent);
    background-image: linear-gradient($angle, rgba(255,255,255,.15) 25%, transparent 25%, transparent 50%, rgba(255,255,255,.15) 50%, rgba(255,255,255,.15) 75%, transparent 75%, transparent);
  }
// Reset filters for IE
@mixin reset-filter() {
  filter: progid:DXImageTransform.Microsoft.gradient(enabled = false);
}


// Mixin for generating button backgrounds
// ---------------------------------------
@mixin buttonBackground($startColor, $endColor) {
  // gradientBar will set the background to a pleasing blend of these, to support IE<=9
  @include gradientBar($startColor, $endColor);
  @include reset-filter();

  // in these cases the gradient won't cover the background, so we override
  &:hover, &:active, &.active, &.disabled, &[disabled] {
    background-color: $endColor;
  }

  // IE 7 + 8 can't handle box-shadow to show active, so we darken a bit ourselves
  &:active,
  &.active {
    background-color: darken($endColor, 10%) e("\9");
  }
}


// COMPONENT MIXINS
// --------------------------------------------------

// POPOVER ARROWS
// -------------------------
// For tipsies and popovers
  @mixin popoverArrow-top($arrowWidth: 5px) {
    bottom: 0;
    left: 50%;
    margin-left: -$arrowWidth;
    border-left: $arrowWidth solid transparent;
    border-right: $arrowWidth solid transparent;
    border-top: $arrowWidth solid $black;
  }
  @mixin popoverArrow-left($arrowWidth: 5px) {
    top: 50%;
    right: 0;
    margin-top: -$arrowWidth;
    border-top: $arrowWidth solid transparent;
    border-bottom: $arrowWidth solid transparent;
    border-left: $arrowWidth solid $black;
  }
  @mixin popoverArrow-bottom($arrowWidth: 5px) {
    top: 0;
    left: 50%;
    margin-left: -$arrowWidth;
    border-left: $arrowWidth solid transparent;
    border-right: $arrowWidth solid transparent;
    border-bottom: $arrowWidth solid $black;
  }
  @mixin popoverArrow-right($arrowWidth: 5px) {
    top: 50%;
    left: 0;
    margin-top: -$arrowWidth;
    border-top: $arrowWidth solid transparent;
    border-bottom: $arrowWidth solid transparent;
    border-right: $arrowWidth solid $black;
  }