//
// Base styles
//

.card {
    position: relative;
    display: flex;
    flex-direction: column;
    min-width: 0;
    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:first-child {
        .list-group-item:first-child {
            @include border-top-radius($card-border-radius);
        }
    }

    > .list-group:last-child {
        .list-group-item:last-child {
            @include border-bottom-radius($card-border-radius);
        }
    }
}

.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;
    padding: $card-spacer-x;
}

.card-title {
    margin-bottom: $card-spacer-y;
}

.card-subtitle {
    margin-top: -($card-spacer-y * 0.5);
    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>
    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
        );
    }

    + .list-group {
        .list-group-item:first-child {
            border-top: 0;
        }
    }
}

.card-footer {
    padding: $card-spacer-y $card-spacer-x;
    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: -($card-spacer-x * 0.5);
    margin-bottom: -$card-spacer-y;
    margin-left: -($card-spacer-x * 0.5);
    border-bottom: 0;
}

.card-header-pills {
    margin-right: -($card-spacer-x * 0.5);
    margin-left: -($card-spacer-x * 0.5);
}

// Card image
.card-img-overlay {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    padding: $card-img-overlay-padding;
}

.card-img {
    width: 100%; // Required because we use flexbox and this inherently applies align-self: stretch
    @include border-radius($card-inner-border-radius);
}

// Card image caps
.card-img-top {
    width: 100%; // Required because we use flexbox and this inherently applies align-self: stretch
    @include border-top-radius($card-inner-border-radius);
}

.card-img-bottom {
    width: 100%; // Required because we use flexbox and this inherently applies align-self: stretch
    @include border-bottom-radius($card-inner-border-radius);
}

// Card deck

.card-deck {
    display: flex;
    flex-direction: column;

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

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

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

//
// Card groups
//

.card-group {
    display: flex;
    flex-direction: column;

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

    @include media-breakpoint-up(sm) {
        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 {
                &:first-child {
                    @include border-right-radius(0);

                    .card-img-top,
                    .card-header {
                        border-top-right-radius: 0;
                    }
                    .card-img-bottom,
                    .card-footer {
                        border-bottom-right-radius: 0;
                    }
                }

                &:last-child {
                    @include border-left-radius(0);

                    .card-img-top,
                    .card-header {
                        border-top-left-radius: 0;
                    }
                    .card-img-bottom,
                    .card-footer {
                        border-bottom-left-radius: 0;
                    }
                }

                &:only-child {
                    @include border-radius($card-border-radius);

                    .card-img-top,
                    .card-header {
                        @include border-top-radius($card-border-radius);
                    }
                    .card-img-bottom,
                    .card-footer {
                        @include border-bottom-radius($card-border-radius);
                    }
                }

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

                    .card-img-top,
                    .card-img-bottom,
                    .card-header,
                    .card-footer {
                        @include border-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 {
    .card:not(:first-of-type):not(:last-of-type) {
        border-bottom: 0;
        border-radius: 0;
    }

    .card:not(:first-of-type) {
        .card-header:first-child {
            border-radius: 0;
        }
    }

    .card:first-of-type {
        border-bottom: 0;
        border-bottom-right-radius: 0;
        border-bottom-left-radius: 0;
    }

    .card:last-of-type {
        border-top-left-radius: 0;
        border-top-right-radius: 0;
    }
}