//

// 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.

.clearfix() {

  &:before,

  &:after {

    content: " "; /* 1 */

    display: table; /* 2 */

  }

  &:after {

    clear: both;

  }

}

// Webkit-style focus

.tab-focus() {

  // Default

  outline: thin dotted #333;

  // Webkit

  outline: 5px auto -webkit-focus-ring-color;

  outline-offset: -2px;

}

// Center-align a block level element

.center-block() {

  display: block;

  margin-left: auto;

  margin-right: auto;

}

// Sizing shortcuts

.size(@width; @height) {

  width: @width;

  height: @height;

}

.square(@size) {

  .size(@size; @size);

}

// Placeholder text

.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

.text-overflow() {

  overflow: hidden;

  text-overflow: ellipsis;

  white-space: nowrap;

}

// 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;

}

// CSS3 PROPERTIES

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

// Single side border-radius

.border-top-radius(@radius) {

  border-top-right-radius: @radius;

   border-top-left-radius: @radius;

}

.border-right-radius(@radius) {

  border-bottom-right-radius: @radius;

     border-top-right-radius: @radius;

}

.border-bottom-radius(@radius) {

  border-bottom-right-radius: @radius;

   border-bottom-left-radius: @radius;

}

.border-left-radius(@radius) {

  border-bottom-left-radius: @radius;

     border-top-left-radius: @radius;

}

// Drop shadows

.box-shadow(@shadow) {

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

          box-shadow: @shadow;

}

// Transitions

.transition(@transition) {

  -webkit-transition: @transition;

          transition: @transition;

}

.transition-delay(@transition-delay) {

  -webkit-transition-delay: @transition-delay;

          transition-delay: @transition-delay;

}

.transition-duration(@transition-duration) {

  -webkit-transition-duration: @transition-duration;

          transition-duration: @transition-duration;

}

.transition-transform(@transition) {

  -webkit-transition: -webkit-transform @transition;

     -moz-transition: -moz-transform @transition;

       -o-transition: -o-transform @transition;

          transition: transform @transition;

}

// Transformations

.rotate(@degrees) {

  -webkit-transform: rotate(@degrees);

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

          transform: rotate(@degrees);

}

.scale(@ratio) {

  -webkit-transform: scale(@ratio);

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

          transform: scale(@ratio);

}

.translate(@x; @y) {

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

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

          transform: translate(@x, @y);

}

.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);

}

.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

.backface-visibility(@visibility){

  -webkit-backface-visibility: @visibility;

     -moz-backface-visibility: @visibility;

          backface-visibility: @visibility;

}

// Box sizing

.box-sizing(@boxmodel) {

  -webkit-box-sizing: @boxmodel;

     -moz-box-sizing: @boxmodel;

          box-sizing: @boxmodel;

}

// User select

// For selecting text on the page

.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

.resizable(@direction) {

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

  overflow: auto; // Safari fix

}

// CSS3 Content Columns

.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

.hyphens(@mode: auto) {

  word-wrap: break-word;

  -webkit-hyphens: @mode;

     -moz-hyphens: @mode;

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

       -o-hyphens: @mode;

          hyphens: @mode;

}

// Opacity

.opacity(@opacity) {

  opacity: @opacity;

  // IE8 filter

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

  filter: ~"alpha(opacity=@{opacity-ie})";

}

// GRADIENTS

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

#gradient {

  // 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.

  .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: e(%("progid:DXImageTransform.Microsoft.gradient(startColorstr='%d', endColorstr='%d', GradientType=1)",argb(@start-color),argb(@end-color))); // 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.

  .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: e(%("progid:DXImageTransform.Microsoft.gradient(startColorstr='%d', endColorstr='%d', GradientType=0)",argb(@start-color),argb(@end-color))); // IE9 and down

  }

  .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

  }

  .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: e(%("progid:DXImageTransform.Microsoft.gradient(startColorstr='%d', endColorstr='%d', GradientType=1)",argb(@start-color),argb(@end-color))); // IE9 and down, gets no color-stop at all for proper fallback

  }

  .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: e(%("progid:DXImageTransform.Microsoft.gradient(startColorstr='%d', endColorstr='%d', GradientType=0)",argb(@start-color),argb(@end-color))); // IE9 and down, gets no color-stop at all for proper fallback

  }

  .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;

  }

  .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.

.reset-filter() {

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

}

// Retina images

//

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

.img-retina(@file-1x; @file-2x; @width-1x; @height-1x) {

  background-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: url("@{file-2x}");

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

  }

}

// Responsive image

//

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

.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

.nav-divider(@color: #e5e5e5) {

  height: 1px;

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

  overflow: hidden;

  background-color: @color;

}

// Panels

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

.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

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

.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

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

.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

.button-variant(@color; @background; @border) {

  color: @color;

  background-color: @background;

  border-color: @border;

  &:hover,

  &:focus,

  &:active,

  &.active,

  .open .dropdown-toggle& {

    color: @color;

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

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

  }

  &:active,

  &.active,

  .open .dropdown-toggle& {

    background-image: none;

  }

  &.disabled,

  &[disabled],

  fieldset[disabled] & {

    &,

    &:hover,

    &:focus,

    &:active,

    &.active {

      background-color: @background;

          border-color: @border

    }

  }

}

// Button sizes

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

.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

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

.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 {

        .border-left-radius(@border-radius);

      }

    }

    &:last-child {

      > a,

      > span {

        .border-right-radius(@border-radius);

      }

    }

  }

}

// Labels

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

.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.

.navbar-vertical-align(@element-height) {

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

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

}

// Progress bars

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

.progress-bar-variant(@color) {

  background-color: @color;

  .progress-striped & {

    #gradient > .striped(@color);

  }

}

// Responsive utilities

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

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

.responsive-visibility() {

  display: block !important;

  tr& { display: table-row !important; }

  th&,

  td& { display: table-cell !important; }

}

.responsive-invisibility() {

  display: none !important;

  tr& { display: none !important; }

  th&,

  td& { display: none !important; }

}

// Grid System

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

// Centered container element

.container-fixed() {

  margin-right: auto;

  margin-left: auto;

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

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

  .clearfix();

}

// Creates a wrapper for a series of columns

.make-row(@gutter: @grid-gutter-width) {

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

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

  .clearfix();

}

// Generate the extra small columns

.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

.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

.make-sm-column-offset(@columns) {

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

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

  }

}

.make-sm-column-push(@columns) {

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

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

  }

}

.make-sm-column-pull(@columns) {

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

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

  }

}

// Generate the medium columns

.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

.make-md-column-offset(@columns) {

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

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

  }

}

.make-md-column-push(@columns) {

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

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

  }

}

.make-md-column-pull(@columns) {

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

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

  }

}

// Generate the large columns

.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

.make-lg-column-offset(@columns) {

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

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

  }

}

.make-lg-column-push(@columns) {

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

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

  }

}

.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.

.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;

    .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%);

      .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.

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

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

  &:focus {

    border-color: @color;

    outline: 0;

    .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!

.input-size(@input-height; @padding-vertical; @padding-horizontal; @font-size; @line-height; @border-radius) {

  height: @input-height;

  padding: @padding-vertical @padding-horizontal;

  font-size: @font-size;

  line-height: @line-height;

  border-radius: @border-radius;

  select& {

    height: @input-height;

    line-height: @input-height;

  }

  textarea& {

    height: auto;

  }

}