//

// Mixins

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

// Utilities

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

// Clearfix

// Source: http://nicolasgallagher.com/micro-clearfix-hack/

//

// For modern browsers

// 1. The space content is one way to avoid an Opera bug when the

//    contenteditable attribute is included anywhere else in the document.

//    Otherwise it causes space to appear at the top and bottom of elements

//    that are clearfixed.

// 2. The use of `table` rather than `block` is only necessary if using

//    `:before` to contain the top-margins of child elements.

@mixin clearfix() {

  &:before,

  &:after {

    content: " "; /* 1 */

    display: table; /* 2 */

  }

  &:after {

    clear: both;

  }

}

// Webkit-style focus

@mixin tab-focus() {

  // Default

  outline: thin dotted #333;

  // 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;

}

// Sizing shortcuts

@mixin size($width, $height) {

  width: $width;

  height: $height;

}

@mixin square($size) {

  @include size($size, $size);

}

// Placeholder text

@mixin placeholder($color: $input-color-placeholder) {

  &:-moz-placeholder            { color: $color; } // Firefox 4-18

  &::-moz-placeholder           { color: $color; } // Firefox 19+

  &:-ms-input-placeholder       { color: $color; } // Internet Explorer 10+

  &::-webkit-input-placeholder  { color: $color; } // Safari and Chrome

}

// Text overflow

// Requires inline-block or block for proper styling

@mixin text-overflow() {

  overflow: hidden;

  text-overflow: ellipsis;

  white-space: nowrap;

}

// CSS image replacement

// Source: https://github.com/h5bp/html5-boilerplate/commit/aa0396eae757

@mixin hide-text() {

  font: #{0/0} a;

  color: transparent;

  text-shadow: none;

  background-color: transparent;

  border: 0;

}

// CSS3 PROPERTIES

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

// Single side border-radius

@mixin border-top-radius($radius) {

  border-top-right-radius: $radius;

   border-top-left-radius: $radius;

}

@mixin border-right-radius($radius) {

  border-bottom-right-radius: $radius;

     border-top-right-radius: $radius;

}

@mixin border-bottom-radius($radius) {

  border-bottom-right-radius: $radius;

   border-bottom-left-radius: $radius;

}

@mixin border-left-radius($radius) {

  border-bottom-left-radius: $radius;

     border-top-left-radius: $radius;

}

// Drop shadows

@mixin box-shadow($shadow...) {

  -webkit-box-shadow: $shadow; // iOS <4.3 & Android <4.1

          box-shadow: $shadow;

}

// Transitions

@mixin transition($transition...) {

  -webkit-transition: $transition;

          transition: $transition;

}

@mixin transition-delay($transition-delay) {

  -webkit-transition-delay: $transition-delay;

          transition-delay: $transition-delay;

}

@mixin transition-duration($transition-duration) {

  -webkit-transition-duration: $transition-duration;

          transition-duration: $transition-duration;

}

@mixin transition-transform($transition...) {

  -webkit-transition: -webkit-transform $transition;

     -moz-transition: -moz-transform $transition;

       -o-transition: -o-transform $transition;

          transition: transform $transition;

}

// Transformations

@mixin rotate($degrees) {

  -webkit-transform: rotate($degrees);

      -ms-transform: rotate($degrees); // IE9+

          transform: rotate($degrees);

}

@mixin scale($ratio) {

  -webkit-transform: scale($ratio);

      -ms-transform: scale($ratio); // IE9+

          transform: scale($ratio);

}

@mixin translate($x, $y) {

  -webkit-transform: translate($x, $y);

      -ms-transform: translate($x, $y); // IE9+

          transform: translate($x, $y);

}

@mixin skew($x, $y) {

  -webkit-transform: skew($x, $y);

      -ms-transform: skewX($x) skewY($y); // See https://github.com/twbs/bootstrap/issues/4885; IE9+

          transform: skew($x, $y);

}

@mixin translate3d($x, $y, $z) {

  -webkit-transform: translate3d($x, $y, $z);

          transform: translate3d($x, $y, $z);

}

// Backface visibility

// Prevent browsers from flickering when using CSS 3D transforms.

// Default value is `visible`, but can be changed to `hidden`

// See git pull https://github.com/dannykeane/bootstrap.git backface-visibility for examples

@mixin backface-visibility($visibility){

  -webkit-backface-visibility: $visibility;

     -moz-backface-visibility: $visibility;

          backface-visibility: $visibility;

}

// 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;

      -ms-user-select: $select; // IE10+

       -o-user-select: $select;

          user-select: $select;

}

// Resize anything

@mixin resizable($direction) {

  resize: $direction; // Options: horizontal, vertical, both

  overflow: auto; // Safari fix

}

// CSS3 Content Columns

@mixin content-columns($column-count, $column-gap: $grid-gutter-width) {

  -webkit-column-count: $column-count;

     -moz-column-count: $column-count;

          column-count: $column-count;

  -webkit-column-gap: $column-gap;

     -moz-column-gap: $column-gap;

          column-gap: $column-gap;

}

// Optional hyphenation

@mixin hyphens($mode: auto) {

  word-wrap: break-word;

  -webkit-hyphens: $mode;

     -moz-hyphens: $mode;

      -ms-hyphens: $mode; // IE10+

       -o-hyphens: $mode;

          hyphens: $mode;

}

// Opacity

@mixin opacity($opacity) {

  opacity: $opacity;

  // IE8 filter

  $opacity-ie: ($opacity * 100);

  filter: #{alpha(opacity=$opacity-ie)};

}

// GRADIENTS

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

// Horizontal gradient, from left to right

//

// Creates two color stops, start and end, by specifying a color and position for each color stop.

// Color stops are not available in IE9 and below.

@mixin gradient-horizontal($start-color: #555, $end-color: #333, $start-percent: 0%, $end-percent: 100%) {

  background-image: -webkit-gradient(linear, $start-percent top, $end-percent top, from($start-color), to($end-color)); // Safari 4+, Chrome 2+

  background-image: -webkit-linear-gradient(left, color-stop($start-color $start-percent), color-stop($end-color $end-percent)); // Safari 5.1+, Chrome 10+

  background-image: -moz-linear-gradient(left, $start-color $start-percent, $end-color $end-percent); // FF 3.6+

  background-image:  linear-gradient(to right, $start-color $start-percent, $end-color $end-percent); // Standard, IE10

  background-repeat: repeat-x;

  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#{ie-hex-str($start-color)}', endColorstr='#{ie-hex-str($end-color)}', GradientType=1); // IE9 and down

}

// Vertical gradient, from top to bottom

//

// Creates two color stops, start and end, by specifying a color and position for each color stop.

// Color stops are not available in IE9 and below.

@mixin gradient-vertical($start-color: #555, $end-color: #333, $start-percent: 0%, $end-percent: 100%) {

  background-image: -webkit-gradient(linear, left $start-percent, left $end-percent, from($start-color), to($end-color)); // Safari 4+, Chrome 2+

  background-image: -webkit-linear-gradient(top, $start-color, $start-percent, $end-color, $end-percent); // Safari 5.1+, Chrome 10+

  background-image:  -moz-linear-gradient(top, $start-color $start-percent, $end-color $end-percent); // FF 3.6+

  background-image: linear-gradient(to bottom, $start-color $start-percent, $end-color $end-percent); // Standard, IE10

  background-repeat: repeat-x;

  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#{ie-hex-str($start-color)}', endColorstr='#{ie-hex-str($end-color)}', GradientType=0); // IE9 and down

}

@mixin gradient-directional($start-color: #555, $end-color: #333, $deg: 45deg) {

  background-repeat: repeat-x;

  background-image: -webkit-linear-gradient($deg, $start-color, $end-color); // Safari 5.1+, Chrome 10+

  background-image: -moz-linear-gradient($deg, $start-color, $end-color); // FF 3.6+

  background-image: linear-gradient($deg, $start-color, $end-color); // Standard, IE10

}

@mixin gradient-horizontal-three-colors($start-color: #00b3ee, $mid-color: #7a43b6, $color-stop: 50%, $end-color: #c3325f) {

  background-image: -webkit-gradient(left, linear, 0 0, 0 100%, from($start-color), color-stop($color-stop, $mid-color), to($end-color));

  background-image: -webkit-linear-gradient(left, $start-color, $mid-color $color-stop, $end-color);

  background-image: -moz-linear-gradient(left, $start-color, $mid-color $color-stop, $end-color);

  background-image: linear-gradient(to right, $start-color, $mid-color $color-stop, $end-color);

  background-repeat: no-repeat;

  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#{ie-hex-str($start-color)}', endColorstr='#{ie-hex-str($end-color)}', GradientType=1); // IE9 and down, gets no color-stop at all for proper fallback

}

@mixin gradient-vertical-three-colors($start-color: #00b3ee, $mid-color: #7a43b6, $color-stop: 50%, $end-color: #c3325f) {

  background-image: -webkit-gradient(linear, 0 0, 0 100%, from($start-color), color-stop($color-stop, $mid-color), to($end-color));

  background-image: -webkit-linear-gradient($start-color, $mid-color $color-stop, $end-color);

  background-image: -moz-linear-gradient(top, $start-color, $mid-color $color-stop, $end-color);

  background-image: linear-gradient($start-color, $mid-color $color-stop, $end-color);

  background-repeat: no-repeat;

  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#{ie-hex-str($start-color)}', endColorstr='#{ie-hex-str($end-color)}', GradientType=0); // IE9 and down, gets no color-stop at all for proper fallback

}

@mixin gradient-radial($inner-color: #555, $outer-color: #333) {

  background-image: -webkit-gradient(radial, center center, 0, center center, 460, from($inner-color), to($outer-color));

  background-image: -webkit-radial-gradient(circle, $inner-color, $outer-color);

  background-image: -moz-radial-gradient(circle, $inner-color, $outer-color);

  background-image: radial-gradient(circle, $inner-color, $outer-color);

  background-repeat: no-repeat;

}

@mixin gradient-striped($color: #555, $angle: 45deg) {

  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: 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

//

// When you need to remove a gradient background, do not forget to use this to reset

// the IE filter for IE9 and below.

@mixin reset-filter() {

  filter: progid:DXImageTransform.Microsoft.gradient(enabled = false);

}

// Retina images

//

// Short retina mixin for setting background-image and -size

@mixin img-retina($file-1x, $file-2x, $width-1x, $height-1x) {

  background-image: image-url("#{$file-1x}");

  @media

  only screen and (-webkit-min-device-pixel-ratio: 2),

  only screen and (   min--moz-device-pixel-ratio: 2),

  only screen and (     -o-min-device-pixel-ratio: 2/1),

  only screen and (        min-device-pixel-ratio: 2),

  only screen and (                min-resolution: 192dpi),

  only screen and (                min-resolution: 2dppx) {

    background-image: image-url("#{$file-2x}");

    background-size: $width-1x $height-1x;

  }

}

// Responsive image

//

// Keep images from scaling beyond the width of their parents.

@mixin img-responsive($display: block) {

  display: $display;

  max-width: 100%; // Part 1: Set a maximum relative to the parent

  height: auto; // Part 2: Scale the height according to the width, otherwise you get stretching

}

// COMPONENT MIXINS

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

// Horizontal dividers

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

// Dividers (basically an hr) within dropdowns and nav lists

@mixin nav-divider($color: #e5e5e5) {

  height: 1px;

  margin: (($line-height-computed / 2) - 1) 0;

  overflow: hidden;

  background-color: $color;

}

// Panels

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

@mixin panel-variant($border, $heading-text-color, $heading-bg-color, $heading-border) {

  border-color: $border;

  & > .panel-heading {

    color: $heading-text-color;

    background-color: $heading-bg-color;

    border-color: $heading-border;

    + .panel-collapse .panel-body {

      border-top-color: $border;

    }

  }

  & > .panel-footer {

    + .panel-collapse .panel-body {

      border-bottom-color: $border;

    }

  }

}

// Alerts

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

@mixin alert-variant($background, $border, $text-color) {

  background-color: $background;

  border-color: $border;

  color: $text-color;

  hr {

    border-top-color: darken($border, 5%);

  }

  .alert-link {

    color: darken($text-color, 10%);

  }

}

// Tables

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

@mixin table-row-variant($state, $background, $border) {

  // Exact selectors below required to override `.table-striped` and prevent

  // inheritance to nested tables.

  .table > thead > tr,

  .table > tbody > tr,

  .table > tfoot > tr {

    > td.#{$state},

    > th.#{$state},

    &.#{$state} > td,

    &.#{$state} > th {

      background-color: $background;

      border-color: $border;

    }

  }

  // Hover states for `.table-hover`

  // Note: this is not available for cells or rows within `thead` or `tfoot`.

  .table-hover > tbody > tr {

    > td.#{$state}:hover,

    > th.#{$state}:hover,

    &.#{$state}:hover > td {

      background-color: darken($background, 5%);

      border-color: darken($border, 5%);

    }

  }

}

// Button variants

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

// Easily pump out default styles, as well as :hover, :focus, :active,

// and disabled options for all buttons

@mixin button-variant($color, $background, $border) {

  color: $color;

  background-color: $background;

  border-color: $border;

  &:hover,

  &:focus,

  &:active,

  &.active {

    color: $color;

    background-color: darken($background, 8%);

        border-color: darken($border, 12%);

  }

  .open & { &.dropdown-toggle {

    color: $color;

    background-color: darken($background, 8%);

        border-color: darken($border, 12%);

  } }

  &:active,

  &.active {

    background-image: none;

  }

  .open & { &.dropdown-toggle {

    background-image: none;

  } }

  &.disabled,

  &[disabled],

  fieldset[disabled] & {

    &,

    &:hover,

    &:focus,

    &:active,

    &.active {

      background-color: $background;

          border-color: $border

    }

  }

}

// Button sizes

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

@mixin button-size($padding-vertical, $padding-horizontal, $font-size, $line-height, $border-radius) {

  padding: $padding-vertical $padding-horizontal;

  font-size: $font-size;

  line-height: $line-height;

  border-radius: $border-radius;

}

// Pagination

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

@mixin pagination-size($padding-vertical, $padding-horizontal, $font-size, $border-radius) {

  > li {

    > a,

    > span {

      padding: $padding-vertical $padding-horizontal;

      font-size: $font-size;

    }

    &:first-child {

      > a,

      > span {

        @include border-left-radius($border-radius);

      }

    }

    &:last-child {

      > a,

      > span {

        @include border-right-radius($border-radius);

      }

    }

  }

}

// Labels

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

@mixin label-variant($color) {

  background-color: $color;

  &[href] {

    &:hover,

    &:focus {

      background-color: darken($color, 10%);

    }

  }

}

// Navbar vertical align

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

// Vertically center elements in the navbar.

// Example: an element has a height of 30px, so write out `.navbar-vertical-align(30px);` to calculate the appropriate top margin.

@mixin navbar-vertical-align($element-height) {

  margin-top: (($navbar-height - $element-height) / 2);

  margin-bottom: (($navbar-height - $element-height) / 2);

}

// Progress bars

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

@mixin progress-bar-variant($color) {

  background-color: $color;

  .progress-striped & {

    @include gradient-striped($color);

  }

}

// Responsive utilities

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

// More easily include all the states for responsive-utilities.less.

// [converter] $parent hack

@mixin responsive-visibility($parent) {

  #{$parent} { display: block !important; }

  tr#{$parent} { display: table-row !important; }

  th#{$parent},

  td#{$parent} { display: table-cell !important; }

}

// [converter] $parent hack

@mixin responsive-invisibility($parent) {

  #{$parent} { display: none !important; }

  tr#{$parent} { display: none !important; }

  th#{$parent},

  td#{$parent} { display: none !important; }

}

// Grid System

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

// Centered container element

@mixin container-fixed() {

  margin-right: auto;

  margin-left: auto;

  padding-left:  ($grid-gutter-width / 2);

  padding-right: ($grid-gutter-width / 2);

  @include clearfix();

}

// Creates a wrapper for a series of columns

@mixin make-row($gutter: $grid-gutter-width) {

  margin-left:  ($gutter / -2);

  margin-right: ($gutter / -2);

  @include clearfix();

}

// Generate the extra small columns

@mixin make-xs-column($columns, $gutter: $grid-gutter-width) {

  position: relative;

  float: left;

  width: percentage(($columns / $grid-columns));

  // Prevent columns from collapsing when empty

  min-height: 1px;

  // Inner gutter via padding

  padding-left:  ($gutter / 2);

  padding-right: ($gutter / 2);

}

// Generate the small columns

@mixin make-sm-column($columns, $gutter: $grid-gutter-width) {

  position: relative;

  // Prevent columns from collapsing when empty

  min-height: 1px;

  // Inner gutter via padding

  padding-left:  ($gutter / 2);

  padding-right: ($gutter / 2);

  // Calculate width based on number of columns available

  @media (min-width: $screen-sm) {

    float: left;

    width: percentage(($columns / $grid-columns));

  }

}

// Generate the small column offsets

@mixin make-sm-column-offset($columns) {

  @media (min-width: $screen-sm) {

    margin-left: percentage(($columns / $grid-columns));

  }

}

@mixin make-sm-column-push($columns) {

  @media (min-width: $screen-sm) {

    left: percentage(($columns / $grid-columns));

  }

}

@mixin make-sm-column-pull($columns) {

  @media (min-width: $screen-sm) {

    right: percentage(($columns / $grid-columns));

  }

}

// Generate the medium columns

@mixin make-md-column($columns, $gutter: $grid-gutter-width) {

  position: relative;

  // Prevent columns from collapsing when empty

  min-height: 1px;

  // Inner gutter via padding

  padding-left:  ($gutter / 2);

  padding-right: ($gutter / 2);

  // Calculate width based on number of columns available

  @media (min-width: $screen-md) {

    float: left;

    width: percentage(($columns / $grid-columns));

  }

}

// Generate the large column offsets

@mixin make-md-column-offset($columns) {

  @media (min-width: $screen-md) {

    margin-left: percentage(($columns / $grid-columns));

  }

}

@mixin make-md-column-push($columns) {

  @media (min-width: $screen-md) {

    left: percentage(($columns / $grid-columns));

  }

}

@mixin make-md-column-pull($columns) {

  @media (min-width: $screen-md) {

    right: percentage(($columns / $grid-columns));

  }

}

// Generate the large columns

@mixin make-lg-column($columns, $gutter: $grid-gutter-width) {

  position: relative;

  // Prevent columns from collapsing when empty

  min-height: 1px;

  // Inner gutter via padding

  padding-left:  ($gutter / 2);

  padding-right: ($gutter / 2);

  // Calculate width based on number of columns available

  @media (min-width: $screen-lg) {

    float: left;

    width: percentage(($columns / $grid-columns));

  }

}

// Generate the large column offsets

@mixin make-lg-column-offset($columns) {

  @media (min-width: $screen-lg) {

    margin-left: percentage(($columns / $grid-columns));

  }

}

@mixin make-lg-column-push($columns) {

  @media (min-width: $screen-lg) {

    left: percentage(($columns / $grid-columns));

  }

}

@mixin make-lg-column-pull($columns) {

  @media (min-width: $screen-lg) {

    right: percentage(($columns / $grid-columns));

  }

}

// Form validation states

//

// Used in forms.less to generate the form validation CSS for warnings, errors,

// and successes.

@mixin form-control-validation($text-color: #555, $border-color: #ccc, $background-color: #f5f5f5) {

  // Color the label and help text

  .help-block,

  .control-label {

    color: $text-color;

  }

  // Set the border and box shadow on specific inputs to match

  .form-control {

    border-color: $border-color;

    @include box-shadow(inset 0 1px 1px rgba(0,0,0,.075)); // Redeclare so transitions work

    &:focus {

      border-color: darken($border-color, 10%);

      $shadow: inset 0 1px 1px rgba(0,0,0,.075), 0 0 6px lighten($border-color, 20%);

      @include box-shadow($shadow);

    }

  }

  // Set validation states also for addons

  .input-group-addon {

    color: $text-color;

    border-color: $border-color;

    background-color: $background-color;

  }

}

// Form control focus state

//

// Generate a customized focus state and for any input with the specified color,

// which defaults to the `$input-focus-border` variable.

//

// We highly encourage you to not customize the default value, but instead use

// this to tweak colors on an as-needed basis. This aesthetic change is based on

// WebKit's default styles, but applicable to a wider range of browsers. Its

// usability and accessibility should be taken into account with any change.

//

// Example usage: change the default blue border and shadow to white for better

// contrast against a dark gray background.

@mixin form-control-focus($color: $input-border-focus) {

  $color-rgba: rgba(red($color), green($color), blue($color), .6);

  &:focus {

    border-color: $color;

    outline: 0;

    @include box-shadow(inset 0 1px 1px rgba(0,0,0,.075), 0 0 8px $color-rgba);

  }

}

// Form control sizing

//

// Relative text size, padding, and border-radii changes for form controls. For

// horizontal sizing, wrap controls in the predefined grid classes. `<select>`

// element gets special love because it's special, and that's a fact!

// [converter] $parent hack

@mixin input-size($parent, $input-height, $padding-vertical, $padding-horizontal, $font-size, $line-height, $border-radius) {

  #{$parent} { height: $input-height;

  padding: $padding-vertical $padding-horizontal;

  font-size: $font-size;