// // Base styles //

.card {

position: relative;
display: flex;
flex-direction: column;
min-width: 0; // See https://github.com/twbs/bootstrap/pull/22740#issuecomment-305868106
height: $card-height;
word-wrap: break-word;
background-color: $card-bg;
background-clip: border-box;
border: $card-border-width solid $card-border-color;
@include border-radius($card-border-radius);

> hr {
  margin-right: 0;
  margin-left: 0;
}

> .list-group {
  border-top: inherit;
  border-bottom: inherit;

  &:first-child {
    border-top-width: 0;
    @include border-top-radius($card-inner-border-radius);
  }

  &:last-child  {
    border-bottom-width: 0;
    @include border-bottom-radius($card-inner-border-radius);
  }
}

// Due to specificity of the above selector (`.card > .list-group`), we must
// use a child selector here to prevent double borders.
> .card-header + .list-group,
> .list-group + .card-footer {
  border-top: 0;
}

}

.card-body {

// Enable `flex-grow: 1` for decks and groups so that card blocks take up
// as much space as possible, ensuring footers are aligned to the bottom.
flex: 1 1 auto;
// Workaround for the image size bug in IE
// See: https://github.com/twbs/bootstrap/pull/28855
min-height: 1px;
padding: $card-spacer-x;
color: $card-color;

}

.card-title {

margin-bottom: $card-spacer-y;

}

.card-subtitle {

margin-top: -$card-spacer-y / 2;
margin-bottom: 0;

}

.card-text:last-child {

margin-bottom: 0;

}

.card-link {

@include hover() {
  text-decoration: none;
}

+ .card-link {
  margin-left: $card-spacer-x;
}

}

// // Optional textual caps //

.card-header {

padding: $card-spacer-y $card-spacer-x;
margin-bottom: 0; // Removes the default margin-bottom of <hN>
color: $card-cap-color;
background-color: $card-cap-bg;
border-bottom: $card-border-width solid $card-border-color;

&:first-child {
  @include border-radius($card-inner-border-radius $card-inner-border-radius 0 0);
}

}

.card-footer {

padding: $card-spacer-y $card-spacer-x;
color: $card-cap-color;
background-color: $card-cap-bg;
border-top: $card-border-width solid $card-border-color;

&:last-child {
  @include border-radius(0 0 $card-inner-border-radius $card-inner-border-radius);
}

}

// // Header navs //

.card-header-tabs {

margin-right: -$card-spacer-x / 2;
margin-bottom: -$card-spacer-y;
margin-left: -$card-spacer-x / 2;
border-bottom: 0;

}

.card-header-pills {

margin-right: -$card-spacer-x / 2;
margin-left: -$card-spacer-x / 2;

}

// Card image .card-img-overlay {

position: absolute;
top: 0;
right: 0;
bottom: 0;
left: 0;
padding: $card-img-overlay-padding;
@include border-radius($card-inner-border-radius);

}

.card-img, .card-img-top, .card-img-bottom {

flex-shrink: 0; // For IE: https://github.com/twbs/bootstrap/issues/29396
width: 100%; // Required because we use flexbox and this inherently applies align-self: stretch

}

.card-img, .card-img-top {

@include border-top-radius($card-inner-border-radius);

}

.card-img, .card-img-bottom {

@include border-bottom-radius($card-inner-border-radius);

}

// Card deck

.card-deck {

.card {
  margin-bottom: $card-deck-margin;
}

@include media-breakpoint-up(sm) {
  display: flex;
  flex-flow: row wrap;
  margin-right: -$card-deck-margin;
  margin-left: -$card-deck-margin;

  .card {
    // Flexbugs #4: https://github.com/philipwalton/flexbugs#flexbug-4
    flex: 1 0 0%;
    margin-right: $card-deck-margin;
    margin-bottom: 0; // Override the default
    margin-left: $card-deck-margin;
  }
}

}

// // Card groups //

.card-group {

// The child selector allows nested `.card` within `.card-group`
// to display properly.
> .card {
  margin-bottom: $card-group-margin;
}

@include media-breakpoint-up(sm) {
  display: flex;
  flex-flow: row wrap;
  // The child selector allows nested `.card` within `.card-group`
  // to display properly.
  > .card {
    // Flexbugs #4: https://github.com/philipwalton/flexbugs#flexbug-4
    flex: 1 0 0%;
    margin-bottom: 0;

    + .card {
      margin-left: 0;
      border-left: 0;
    }

    // Handle rounded corners
    @if $enable-rounded {
      &:not(:last-child) {
        @include border-right-radius(0);

        .card-img-top,
        .card-header {
          // stylelint-disable-next-line property-disallowed-list
          border-top-right-radius: 0;
        }
        .card-img-bottom,
        .card-footer {
          // stylelint-disable-next-line property-disallowed-list
          border-bottom-right-radius: 0;
        }
      }

      &:not(:first-child) {
        @include border-left-radius(0);

        .card-img-top,
        .card-header {
          // stylelint-disable-next-line property-disallowed-list
          border-top-left-radius: 0;
        }
        .card-img-bottom,
        .card-footer {
          // stylelint-disable-next-line property-disallowed-list
          border-bottom-left-radius: 0;
        }
      }
    }
  }
}

}

// // Columns //

.card-columns {

.card {
  margin-bottom: $card-columns-margin;
}

@include media-breakpoint-up(sm) {
  column-count: $card-columns-count;
  column-gap: $card-columns-gap;
  orphans: 1;
  widows: 1;

  .card {
    display: inline-block; // Don't let them vertically span multiple columns
    width: 100%; // Don't let their width change
  }
}

}

// // Accordion //

.accordion {

overflow-anchor: none;

> .card {
  overflow: hidden;

  &:not(:last-of-type) {
    border-bottom: 0;
    @include border-bottom-radius(0);
  }

  &:not(:first-of-type) {
    @include border-top-radius(0);
  }

  > .card-header {
    @include border-radius(0);
    margin-bottom: -$card-border-width;
  }
}

}