/*
-------------
CLEARFIX
-------------
*/
// Clearfix
//
// 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.
//
// Source: http://nicolasgallagher.com/micro-clearfix-hack/

.clearfix() {
  &::before,
  &::after {
    content: " "; // 1
    display: table; // 2
  }

  &::after {
    clear: both;
  }
}

.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
}

// Retina image
//
// Short retina mixin for setting background-image and -size. Note that the
// spelling of `min--moz-device-pixel-ratio` is intentional.
/* stylelint-disable */
.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;
  }
}
/* stylelint-enable */

// Center-align a block level element

.center-block() {
  display: block;
  margin-left: auto;
  margin-right: auto;
}

// Responsive utilities

//
// More easily include all the states for responsive-utilities.less.
.responsive-visibility() {
  display: block !important;

  table& {
    display: table !important;
  }

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

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

.responsive-invisibility() {
  display: none !important;
}

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

// Only display content to screen readers

.sr-only() {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
  white-space: nowrap;
}