/* Topic collections share the site's Bootstrap appearance values. */
.topic-collection {
    color: var(--bs-fg-body);
    background: var(--bs-bg-body);
    overflow-wrap: anywhere;
}
.topic-collection :is(a, button, input, select):focus-visible {
    outline: var(--bs-focus-ring-width) solid var(--bs-primary-base);
    outline-offset: var(--bs-focus-ring-offset);
}
.collection-opening {
    padding-block: var(--bs-spacer-6) var(--bs-spacer-9);
    background: var(--bs-primary-bg-subtle);
    border-bottom: var(--bs-border-width) solid var(--bs-border-color);
}
.collection-breadcrumb {
    margin-bottom: var(--bs-spacer-8);
    font-size: var(--bs-font-size-sm);
}
.collection-breadcrumb a {
    display: inline-flex;
    align-items: center;
    min-height: 2.75rem;
    color: var(--bs-fg-body);
}
.collection-introduction {
    display: grid;
    gap: var(--bs-spacer-7);
    align-items: center;
}
.topic-collection .collection-eyebrow {
    margin: 0 0 var(--bs-spacer-4);
    font-size: var(--bs-font-size-sm);
    font-weight: var(--bs-font-weight-semibold);
    color: var(--bs-primary-fg);
}
.bootstrap-theme .topic-collection .collection-title {
    margin: 0 0 var(--bs-spacer-6);
    max-width: 16ch;
    color: var(--bs-heading-color);
    font-size: var(--bs-font-size-5xl);
    font-weight: var(--bs-heading-font-weight);
    line-height: var(--bs-heading-line-height);
    text-wrap: balance;
}
.collection-link {
    display: inline-flex;
    align-items: center;
    gap: var(--bs-spacer-3);
    min-height: 2.75rem;
    color: var(--bs-primary-fg);
    font-size: var(--bs-font-size-sm);
    font-weight: var(--bs-font-weight-semibold);
    text-underline-offset: var(--bs-link-underline-offset);
}
.collection-context {
    max-width: var(--cms-reading-measure);
}
.collection-summary {
    font-size: var(--bs-font-size-xl);
    color: var(--bs-fg-body);
    line-height: var(--bs-body-line-height);
}
.collection-summary > :last-child,
.collection-description > :last-child {
    margin-bottom: 0;
}
.collection-description {
    margin-top: var(--bs-spacer-5);
    color: var(--bs-fg-2);
    font-size: var(--bs-font-size-md);
    line-height: var(--bs-body-line-height);
}
.collection-description:first-child {
    margin-top: 0;
    font-size: var(--bs-font-size-xl);
    color: var(--bs-fg-body);
}
.collection-cover {
    margin: var(--bs-spacer-7) 0 0;
    aspect-ratio: 16 / 7;
    overflow: hidden;
    border-radius: var(--bs-radius-7);
}
.collection-cover :is(picture, img) {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.collection-library {
    padding-block: var(--bs-spacer-9);
    scroll-margin-top: calc(
        var(--bs-spacer-8) * 4 + var(--cms-preview-banner-height, 0px)
    );
}
.collection-library-heading {
    display: flex;
    flex-wrap: wrap;
    align-items: end;
    justify-content: space-between;
    gap: var(--bs-spacer-5);
    margin-bottom: var(--bs-spacer-7);
}
.bootstrap-theme
    .topic-collection
    :is(.collection-library-heading, .collection-invitation)
    h2 {
    margin: 0;
    max-width: 22ch;
    color: var(--bs-heading-color);
    font-size: var(--bs-font-size-3xl);
    font-weight: var(--bs-heading-font-weight);
    line-height: var(--bs-heading-line-height);
    text-wrap: balance;
}
.collection-workspace {
    display: grid;
    gap: var(--bs-spacer-8);
    align-items: start;
}
.collection-results,
.collection-discovery {
    min-width: 0;
}
.collection-tools {
    margin-bottom: var(--bs-spacer-7);
}
.collection-filter-form {
    display: flex;
    flex-wrap: wrap;
    align-items: end;
    gap: var(--bs-spacer-4);
}
.collection-filter-form > div {
    flex: 1 1 12rem;
    min-width: 0;
}
.collection-filter-form button,
.collection-filter-form :is(input, select) {
    min-height: 2.75rem;
}
.collection-filter-form button {
    flex: 0 0 auto;
}
.collection-result-summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--bs-spacer-3);
    min-height: 2.75rem;
    padding-bottom: var(--bs-spacer-4);
    border-bottom: var(--bs-border-width) solid var(--bs-border-color);
    color: var(--bs-fg-2);
    font-size: var(--bs-font-size-sm);
}
.collection-filter-form + .collection-result-summary {
    margin-top: var(--bs-spacer-5);
}
.collection-result-summary p {
    margin: 0;
}
.collection-result-summary strong {
    color: var(--bs-fg-body);
}
.collection-stories {
    display: grid;
    gap: var(--bs-spacer-8) var(--bs-spacer-6);
}
.collection-story {
    display: grid;
    align-content: start;
    gap: var(--bs-spacer-5);
    min-width: 0;
}
.collection-story-image {
    display: block;
    aspect-ratio: 4 / 3;
    overflow: hidden;
    border-radius: var(--bs-radius-6);
    background: var(--bs-bg-2);
}
.collection-story-image :is(picture, img) {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.collection-story-copy {
    min-width: 0;
}
.collection-story-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--bs-spacer-4);
    margin-bottom: var(--bs-spacer-4);
    font-size: var(--bs-font-size-sm);
    color: var(--bs-fg-2);
}
.bootstrap-theme .topic-collection .collection-story h3 {
    margin: 0;
    color: var(--bs-heading-color);
    font-size: var(--bs-font-size-2xl);
    font-weight: var(--bs-heading-font-weight);
    line-height: var(--bs-heading-line-height);
    text-wrap: pretty;
}
.collection-story h3 a {
    display: block;
    min-height: 2.75rem;
    color: inherit;
    text-decoration: none;
}
.collection-story h3 a:hover {
    color: var(--bs-primary-fg);
    text-decoration: underline;
    text-underline-offset: var(--bs-link-underline-offset);
}
.collection-story-summary {
    margin-block: var(--bs-spacer-4) 0;
    font-size: var(--bs-font-size-md);
    line-height: var(--bs-body-line-height);
    color: var(--bs-fg-2);
}
.collection-story-author {
    margin: var(--bs-spacer-3) 0 0;
    font-size: var(--bs-font-size-sm);
    color: var(--bs-fg-2);
}
.collection-story-author a {
    display: inline-flex;
    align-items: center;
    min-height: 2.75rem;
    color: var(--bs-fg-body);
}
.collection-story .collection-link {
    margin-top: var(--bs-spacer-3);
}
.collection-story--text-only {
    border-top: var(--bs-border-width) solid var(--bs-border-color);
    padding-top: var(--bs-spacer-5);
}
.collection-discovery {
    padding-top: var(--bs-spacer-6);
    border-top: var(--bs-border-width) solid var(--bs-border-color);
}
.collection-discovery .card {
    border: 0;
    border-radius: 0;
    box-shadow: none;
    background: transparent;
    padding: 0;
}
.collection-discovery .card-body {
    padding: 0;
}
.collection-discovery :is(a, button, input) {
    min-height: 2.75rem;
}
.collection-discovery .card-title {
    font-size: var(--bs-font-size-xl);
}
.collection-pagination {
    margin-top: var(--bs-spacer-7);
}
.collection-pagination .pagination {
    flex-wrap: wrap;
    gap: var(--bs-spacer-3);
}
.collection-pagination .page-link {
    display: grid;
    place-items: center;
    min-height: 2.75rem;
    min-width: 2.75rem;
}
.collection-empty {
    padding-block: var(--bs-spacer-8);
    max-width: var(--cms-reading-measure);
}
.collection-empty > i {
    display: block;
    margin-bottom: var(--bs-spacer-5);
    font-size: var(--bs-font-size-3xl);
    color: var(--bs-primary-fg);
}
.bootstrap-theme .topic-collection .collection-empty h3 {
    font-size: var(--bs-font-size-2xl);
}
.collection-empty p {
    color: var(--bs-fg-2);
    line-height: var(--bs-body-line-height);
    margin-bottom: var(--bs-spacer-6);
}
.collection-invitation {
    padding-block: var(--bs-spacer-9);
    border-block: var(--bs-border-width) solid var(--bs-border-color);
    background: var(--bs-bg-2);
}
.collection-invitation-layout {
    display: grid;
    gap: var(--bs-spacer-6);
    align-items: center;
}
.collection-invitation p:not(.collection-eyebrow) {
    margin: 0 0 var(--bs-spacer-5);
    color: var(--bs-fg-2);
    line-height: var(--bs-body-line-height);
    max-width: var(--cms-reading-measure);
}
.collection-invitation .btn-solid {
    display: inline-flex;
    align-items: center;
    gap: var(--bs-spacer-3);
    min-height: 2.75rem;
}
@media (min-width: 768px) {
    .bootstrap-theme .topic-collection .collection-title {
        font-size: var(--bs-font-size-6xl);
    }
    .collection-stories:not(.collection-stories--compact-grid) {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    .collection-story--feature {
        grid-column: 1 / -1;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        align-items: center;
        gap: var(--bs-spacer-7);
    }
    .collection-story--compact {
        grid-template-columns: minmax(0, 0.55fr) minmax(0, 1fr);
        align-items: start;
        padding-bottom: var(--bs-spacer-6);
        border-bottom: var(--bs-border-width) solid var(--bs-border-color);
    }
    .collection-story--compact .collection-story-image {
        aspect-ratio: 1;
    }
    .collection-story--text-only .collection-story-copy {
        grid-column: 1 / -1;
    }
    .collection-filter-form > div {
        flex: 0 1 13rem;
    }
    .collection-filter-form .collection-search-field {
        flex: 1 1 15rem;
    }
}
@media (min-width: 1024px) {
    .collection-opening {
        padding-bottom: calc(var(--bs-spacer-9) * 1.5);
    }
    .collection-introduction,
    .collection-invitation-layout {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: var(--bs-spacer-8);
    }
    .collection-workspace--sidebar {
        grid-template-columns: minmax(0, 1fr) minmax(12rem, 0.28fr);
    }
    .collection-workspace--left {
        grid-template-columns: minmax(12rem, 0.28fr) minmax(0, 1fr);
    }
    .collection-workspace--left .collection-discovery {
        grid-column: 1;
        grid-row: 1;
    }
    .collection-workspace--left .collection-results {
        grid-column: 2;
        grid-row: 1;
    }
    .collection-discovery {
        border-top: 0;
        padding-top: 0;
    }
    .bootstrap-theme
        .topic-collection
        :is(.collection-library-heading, .collection-invitation)
        h2 {
        font-size: var(--bs-font-size-4xl);
    }
}
@media (prefers-reduced-motion: reduce) {
    .topic-collection :is(a, button, input, select) {
        transition: none;
    }
}