// Foundation for Sites by ZURB // foundation.zurb.com // Licensed under MIT Open Source

//// /// @group grid ////

/// Change the behavior of columns defined inside this mixin to use a different column count. /// @content /// /// @param {Number} $columns - Number of columns to use. /// @param {Boolean} $root [false] /// If `false`, selectors inside this mixin will nest inside the parent selector. /// If `true`, selectors will not nest. @mixin grid-context(

$columns,
$root: false

) {

// Store the current column count so it can be re-set later
$old-grid-column-count: $grid-column-count;
$grid-column-count: $columns !global;

@if $root {
  @at-root { @content; }
}
@else {
  @content;
}

// Restore the old column count
$grid-column-count: $old-grid-column-count;

}

/// Creates a grid row. /// @content /// /// @param {Number} $columns [null] - Column count for this row. `null` will use the default column count. /// @param {Keywords} $behavior [null] /// Modifications to the default grid styles. `nest` indicates the row will be placed inside another row. `collapse` indicates that the columns inside this row will not have padding. `nest collapse` combines both behaviors. /// @param {Number} $width [$grid-row-width] - Maximum width of the row. /// @param {Boolean} $cf [true] - Whether or not to include a clearfix. /// @param {Number} $gutter [$grid-column-gutter] - Gutter to use when inverting margins, in case the row is nested. @mixin grid-row(

$columns: null,
$behavior: null,
$width: $grid-row-width,
$cf: true,
$gutter: $grid-column-gutter

) {

$margin: auto;

@if index($behavior, nest) != null {
  @include grid-row-nest($gutter);

  @if index($behavior, collapse) != null {
    margin-left: 0;
    margin-right: 0;
  }
}
@else {
  max-width: $width;
  margin-left: auto;
  margin-right: auto;
}

@if $cf {
  @include clearfix;
}

@if $columns != null {
  @include grid-context($columns) {
    @content;
  }
}

}

/// Inverts the margins of a row to nest it inside of a column. /// /// @param {Map|null} $gutter [null] - Gutter value to use when inverting the margins. Set to `null` to refer to the responsive gutter settings. @mixin grid-row-nest($gutter: $grid-column-gutter) {

@if type-of($gutter) == 'number' {
  $gutter: ($-zf-zero-breakpoint: $gutter);
}

@each $breakpoint, $value in $gutter {
  $margin: rem-calc($value) / 2 * -1;

  @include breakpoint($breakpoint) {
    margin-left: $margin;
    margin-right: $margin;
  }
}

}