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

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

/// Set the gutters on a column
/// @param {Number|Keyword} $gutter [auto]
///   Spacing between columns, accepts multiple values:
///   - A single value will make the gutter that exact size.
///   - A breakpoint name will make the gutter the corresponding size in the $gutters map.
///   - "auto" will make the gutter responsive, using the $gutters map values.
/// @param {Number|Map} $gutters [$grid-column-gutter] - Gutter map or single value to use. Responsive gutter settings by default.
@mixin grid-column-gutter(
  $gutter: auto,
  $gutters: $grid-column-gutter
) {
  @include -zf-breakpoint-value($gutter, $gutters) {
    $padding: rem-calc($-zf-bp-value) / 2;

    padding-right: $padding;
    padding-left: $padding;
  }
}

/// Collapse the gutters on a column by removing the padding. **Note:** only use this mixin within a breakpoint. To collapse a column's gutters on all screen sizes, use the `$gutter` parameter of the `grid-column()` mixin instead.
@mixin grid-column-collapse {
  @include grid-column-gutter(0);
}

/// Shorthand for `grid-column-gutter()`.
/// @alias grid-column-gutter
@mixin grid-col-gutter(
  $gutter: auto,
  $gutters: $grid-column-gutter
) {
  @include grid-column-gutter($gutter, $gutters);
}

/// Shorthand for `grid-column-collapse()`.
/// @alias grid-column-collapse
@mixin grid-col-collapse {
  @include grid-column-collapse;
}

/// Sets bottom margin on grid columns to match gutters
/// @param {Number|Keyword} $margin [auto]
///   The bottom margin on grid columns, accepts multiple values:
///   - A single value will make the margin that exact size.
///   - A breakpoint name will make the margin the corresponding size in the $margins map.
///   - "auto" will make the margin responsive, using the $margins map values.
/// @param {Number|Map} $margins [$grid-column-gutter] - Map or single value to use. Responsive gutter settings by default.
@mixin grid-column-margin (
  $margin: auto,
  $margins: $grid-column-gutter
) {
  @include -zf-breakpoint-value($margin, $margins) {
    $margin-bottom: rem-calc($-zf-bp-value);
    margin-bottom: $margin-bottom;

    > :last-child {
      margin-bottom: 0;
    }
  }
}