/////////////////////
//
// Mixins
//
/////////////////////





//
// Vendor Imports
//

	//
	// @link  http://instyle-css.salsitasoft.com/
	// @link  https://css-tricks.com/instyle-current-selector-sass/
	//
	@import 'vendor/instyle';



//
// Responsive media query
//
// Avoid using rem unit in media queries as WebKit seems to ignore them or behave
// strangely (uses 16px base font size no matter what font-size is set up on html).
// @link  http://stackoverflow.com/questions/12201003/media-queries-with-rem-units-in-chrome
//
// @link  https://css-tricks.com/snippets/css/media-queries-for-standard-devices/
//
// @param  string $width     Breakpoint width in px
// @param  string $property  What CSS property to use (if you set `max-$` the $width will be lowered by 1px)
// @param  string $unit      Unit to use with the query (em by default, px breakpoint value will be converted)
//
@mixin responsive( $width: map_get( $breakpoint, 's' ), $property: 'min-width', $unit: 'em' ) {

	@if 'max' == str-slice( $property, 1, 3 ) {
		$width: $width - 1;
	}

	@if 'px' == $unit {
		$width: $width * 1px;
	} @else {
		$width: $width / 16 + em;
	}

	@media only screen and ( #{$property}: #{$width} ) {
		@content
	}

} // /responsive



//
// Responsive media query: min and max
//
// Avoid using rem unit in media queries as WebKit seems to ignore them or behave
// strangely (uses 16px base font size no matter what font-size is set up on html).
// @link  http://stackoverflow.com/questions/12201003/media-queries-with-rem-units-in-chrome
//
// @param  string $min           Value for $property_min in px
// @param  string $max           Value for $property_max in px (will be lowered by 1px if $property_max = `max-$`)
// @param  string $property_min  What CSS property to use for min
// @param  string $property_max  What CSS property to use for max
// @param  string $unit          Unit to use with the query (em by default, px breakpoint value will be converted)
//
@mixin responsive_minmax( $min: map_get( $breakpoint, 's' ), $max: map_get( $breakpoint, 'm' ), $property_min: 'min-width', $property_max: 'max-width', $unit: 'em' ) {

	@if 'max' == str-slice( $property_min, 1, 3 ) {
		$min: $min - 1;
	}

	@if 'max' == str-slice( $property_max, 1, 3 ) {
		$max: $max - 1;
	}

	@if 'px' == $unit {
		$min: $min * 1px;
		$max: $max * 1px;
	} @else {
		$min: $min / 16 + em;
		$max: $max / 16 + em;
	}

	@media only screen and ( #{$property_min}: #{$min}) and (#{$property_max}: #{$max} ) {
		@content
	}

} // /responsive



//
// Output heading tags styles
//
// @param  num  $multiplier    Alter heading maps values
// @param  bool $global_styles Whether to output the heading tags global styles (these don't according the $multiplier)
//
@mixin h_tags( $multiplier: 1, $global_styles: false ) {

	@each $selector, $settings in $h_tags_setup {

		$size          : nth( $settings, 1 );
		$line_height   : nth( $settings, 2 );
		$margin_top    : nth( $settings, 3 );
		$margin_bottom : nth( $settings, 4 );

		$size: $size * $multiplier;

		@if 1 > $size {
			$size: 1;
		}

		#{$selector} {
			font-size: $size + em;
			line-height: $line_height;

			@if 1 < $size {

				margin-top: $margin_top + em;
				margin-bottom: $margin_bottom + em;

			} @else {

				margin-top: $golden_major + em;
				margin-bottom: $golden_major + em;

			}

		}

	}

	@if $global_styles {

		#{$h_tags} {
			@extend %break_words;
			@extend %line_height_golden_minor;
			padding: 0;
			text-rendering: optimizeLegibility; // https://developer.mozilla.org/en-US/docs/CSS/text-rendering

			&:first-child,
			.screen-reader-text + & {
				margin-top: 0;
			}

			a {
				text-decoration: none;
				color: inherit;
			}

		}

	}

} // /h_tags



//
// Context
//
// @link  https://www.youtube.com/watch?v=o4ok4gsiQSw
//
// @param  string $replace
// @param  string $withs
//
@mixin context( $replace, $withs... ) {

	@each $with in $withs {

		@at-root #{ selector_replace( #{&}, $replace, $with ) } {
			@content;
		}

	}

} // /context



//
// Selectors for container with specific number of children
//
// @link  http://lea.verou.me/2011/01/styling-children-based-on-their-number-with-css3/
//
// @param  string $selector A child selector.
// @param  int    $count    Number of children in container.
// @param  int    $min      Optional starting number of children in container.
//
// IMPORTANT (for LibSass)!
// ========================
//
// To compile correctly with LibSass, we have to move the `@include children()` part
// out of SASS selectors nesting structure and include the whole selectors path again
// in the `children()` mixin.
//
// Otherwise those selectors would be prepended with the nested hierarchy (so, will be duplicated).
//
// Even `@at-root` won't help in this case (plus it's being used in the `children()` mixin).
//
// On the other hand, we have to use LibSass to prevent more complicated issues with line breaks
// in nested selectors...
//
@mixin children( $selector, $count: 2, $min: 1 ) {

	$selectors: ();

	@for $i from $min through $count {

		$selectors: append( $selectors, '#{$selector}:nth-child(#{$i}):nth-last-child(#{ $count + 1 - $i })', comma );

	}

	@at-root #{$selectors} {
		@content;
	}

} // /children



//
// LTR/RTL property value
//
// @param  string $property
// @param  string $value_ltr
// @param  string $value_rtl
//
@mixin rtl_property( $property, $value_ltr, $value_rtl ) { // {{RTL}}

	@if rtl == $language_direction {

		#{ $property }: $value_rtl;

	} @else {

		#{ $property }: $value_ltr;

	}

} // /rtl_property