//
// Non-semantic helper classes
//

@mixin h5bp-helpers {

  .ir { @include image-replacement; }

  .hidden { @include hidden; }

  .visuallyhidden { @include visually-hidden; }

  .clearfix { @include micro-clearfix; }

}

// For image replacement
@mixin image-replacement($img: none, $x: 50%, $y: 50%) {
  display: block; border: 0; text-indent: -999em; overflow: hidden; background-color: transparent; background-repeat: no-repeat; text-align: left; direction: ltr; *line-height: 0;
  @if $img != none {
    background-image: image-url($img);
    background-position: $x $y;
  }
  br { display: none; }
}

// Uses image dimensions
@mixin sized-image-replacement($img, $x: 50%, $y: 50%) {
  @include image-replacement($img, $x, $y);
  width: image-width($img);
  height: image-height($img);
}

// Hide from both screenreaders and browsers: h5bp.com/u
@mixin hidden {
  display: none !important;
  visibility: hidden;
}

// Hide only visually, but have it available for screenreaders: h5bp.com/v
@mixin visually-hidden {
  border: 0; clip: rect(0 0 0 0); height: 1px; margin: -1px; overflow: hidden; padding: 0; position: absolute; width: 1px;
  &.focusable:active, &.focusable:focus {
    clip: auto; height: auto; margin: 0; overflow: visible; position: static; width: auto;
  }
}

// Hide visually and from screenreaders, but maintain layout
@mixin invisible { visibility: hidden; }

// Contain floats: h5bp.com/q
@mixin micro-clearfix {
  &:before, &:after { content: ""; display: table; }
  &:after { clear: both; }
  *zoom: 1;
}