/* ============================================
   s-activity-01 - 活動報告セクション
   ============================================ */
.s-activity-01 {
  container-type: inline-size;
  background: var(--color-bg);
  padding: var(--section-py) var(--container-padding);
}

:is(.s-activity-01 *) {
  margin: 0;
}

.s-activity-01__inner {
  max-width: var(--width-narrow);
  margin: 0 auto;
}

/* --- Header --- */
.s-activity-01__header {
  text-align: center;
  margin-bottom: var(--space-8-xl);
}

.s-activity-01__label {
  display: block;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-bold);
  letter-spacing: var(--letter-spacing-widest);
  color: var(--color-primary);
  text-transform: uppercase;
}

.s-activity-01__title {
  font-size: var(--font-size-3-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  margin-top: var(--space-xs);
}

.s-activity-01__subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  margin-top: var(--space-md);
}

/* --- Grid --- */
.s-activity-01__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--grid-gap);
}

/* --- Card --- */
.s-activity-01__card {
  display: block;
  background: var(--color-bg-sub);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  transition: opacity var(--transition-fast);
}

.s-activity-01__card:hover {
  opacity: 0.85;
}

/* --- Thumbnail --- */
.s-activity-01__thumb {
  aspect-ratio: 16/10;
  background: var(--color-border);
  overflow: hidden;
}

.s-activity-01__thumb-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-normal);
}

.s-activity-01__thumb--empty {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-sub);
}

.s-activity-01__thumb-icon {
  font-size: var(--font-size-5-xl);
  color: var(--color-border);
}

/* --- Body --- */
.s-activity-01__body {
  padding: var(--space-xl);
}

/* --- Meta --- */
.s-activity-01__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2-xs);
  margin-bottom: var(--space-xs);
}

.s-activity-01__date {
  font-size: var(--font-size-xs);
  color: var(--color-text-light);
  font-variant-numeric: tabular-nums;
}

.s-activity-01__external-icon {
  font-size: var(--font-size-xs);
  color: var(--color-border);
}

/* --- Card title --- */
.s-activity-01__card-title {
  font-size: var(--font-size-sm);
  color: var(--color-text);
  font-weight: var(--font-weight-medium);
  line-height: var(--line-height-compact);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: var(--space-md);
}

/* --- Staff --- */
.s-activity-01__staff {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border);
}

.s-activity-01__staff-avatars {
  display: flex;
  margin-left: var(--space-2-xs);
}

.s-activity-01__staff-avatars > * + * {
  margin-left: calc(var(--space-2-xs) * -1);
}

.s-activity-01__avatar {
  width: var(--icon-md);
  height: var(--icon-md);
  border-radius: var(--radius-pill);
  border: 2px solid var(--color-white);
  background: var(--color-bg-sub);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.s-activity-01__avatar-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.s-activity-01__avatar-icon {
  font-size: var(--font-size-3-xs);
  color: var(--color-text-light);
}

.s-activity-01__avatar--more {
  background: var(--color-bg-sub);
}

.s-activity-01__avatar-count {
  font-size: var(--font-size-3-xs);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-light);
}

.s-activity-01__staff-names {
  font-size: var(--font-size-3-xs);
  color: var(--color-text-light);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ============================================
   Single detail page styles
   ============================================ */

/* --- Breadcrumb bar --- */
.s-activity-01__breadcrumb-bar {
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
}

.s-activity-01__breadcrumb-inner {
  max-width: var(--content-width-lg);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

/* --- Main container --- */
.s-activity-01__main {
  max-width: var(--content-width-lg);
  margin: 0 auto;
  padding: var(--space-8-xl) var(--container-padding);
}

/* --- Article header (single) --- */
.s-activity-01__header-single {
  margin-bottom: var(--space-8-xl);
}

/* --- Meta bar --- */
.s-activity-01__meta-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.s-activity-01__meta-info {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  color: var(--color-text-light);
  font-size: var(--font-size-sm);
}

.s-activity-01__meta-item {
  display: flex;
  align-items: center;
  gap: var(--space-3-xs);
}

.s-activity-01__meta-icon {
  font-size: var(--font-size-lg);
}

/* --- Page title --- */
.s-activity-01__page-title {
  font-size: var(--font-size-2-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  line-height: var(--line-height-tight);
  margin-bottom: var(--space-6-xl);
}

/* --- Hero image --- */
.s-activity-01__hero-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: var(--space-8-xl);
  aspect-ratio: 16 / 9;
  background: var(--color-bg-sub);
}

.s-activity-01__hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* --- Staff box --- */
.s-activity-01__staff-box {
  background: var(--color-bg-sub);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
}

.s-activity-01__staff-box-header {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  margin-bottom: var(--space-md);
}

.s-activity-01__staff-box-icon {
  color: var(--color-text-light);
  font-size: var(--font-size-xl);
}

.s-activity-01__staff-box-label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
}

.s-activity-01__staff-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}

/* --- Content wrap --- */
.s-activity-01__content-wrap {
  margin-bottom: var(--space-8-xl);
}

/* --- External link box --- */
.s-activity-01__external-box {
  background: var(--color-bg-sub);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-3-xl);
  margin-bottom: var(--space-8-xl);
}

.s-activity-01__external-inner {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-xl);
}

.s-activity-01__external-info {
  flex: 1;
  min-width: 0;
}

.s-activity-01__external-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  margin-bottom: var(--space-3-xs);
}

.s-activity-01__external-url {
  font-size: var(--font-size-sm);
  color: var(--color-text);
  word-break: break-all;
}

.s-activity-01__external-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-3-xl);
  background: var(--color-text);
  color: var(--color-white);
  border-radius: var(--radius-md);
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-sm);
  text-decoration: none;
  transition: opacity var(--transition-fast);
  flex-shrink: 0;
}

.s-activity-01__external-btn:hover {
  opacity: 0.7;
}

.s-activity-01__external-btn-icon {
  font-size: var(--font-size-xl);
}

/* --- Share --- */
.s-activity-01__share {
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-6-xl);
  margin-bottom: var(--space-8-xl);
}

.s-activity-01__share-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-xl);
}

.s-activity-01__share-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  font-weight: var(--font-weight-medium);
}

.s-activity-01__share-buttons {
  display: flex;
  gap: var(--space-xs);
}

.s-activity-01__share-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: var(--icon-xl);
  height: var(--icon-xl);
  background: var(--color-bg-sub);
  border-radius: var(--radius-pill);
  color: var(--color-text-light);
  text-decoration: none;
  transition: opacity var(--transition-fast);
}

.s-activity-01__share-btn:hover {
  opacity: 0.7;
}

.s-activity-01__share-svg {
  width: var(--icon-sm);
  height: var(--icon-sm);
}

/* --- Pager --- */
.s-activity-01__pager {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  margin-bottom: var(--space-9-xl);
}

.s-activity-01__pager-link {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  background: var(--color-bg-sub);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  text-decoration: none;
  color: inherit;
  transition: opacity var(--transition-fast);
}

.s-activity-01__pager-link:hover {
  opacity: 0.7;
}

.s-activity-01__pager-link--next {
  text-align: right;
}

.s-activity-01__pager-arrow {
  font-size: var(--font-size-2-xl);
  color: var(--color-text-light);
  flex-shrink: 0;
}

.s-activity-01__pager-text {
  min-width: 0;
  flex: 1;
}

.s-activity-01__pager-label {
  display: block;
  font-size: var(--font-size-3-xs);
  color: var(--color-text-light);
  margin-bottom: var(--space-3-xs);
}

.s-activity-01__pager-title {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
}

/* --- Related section --- */
.s-activity-01__related {
  margin-bottom: var(--space-9-xl);
}

.s-activity-01__related-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-3-xl);
}

.s-activity-01__related-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
}

.s-activity-01__related-link {
  font-size: var(--font-size-sm);
  color: var(--color-primary);
  font-weight: var(--font-weight-medium);
  display: flex;
  align-items: center;
  gap: var(--space-3-xs);
  text-decoration: none;
  transition: opacity var(--transition-fast);
}

.s-activity-01__related-link:hover {
  opacity: 0.7;
}

.s-activity-01__related-link-icon {
  font-size: var(--font-size-sm);
}

/* --- Back button --- */
.s-activity-01__back {
  text-align: center;
}

.s-activity-01__back-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-md) var(--space-6-xl);
  background: var(--color-bg-sub);
  color: var(--color-text);
  border-radius: var(--radius-md);
  font-weight: var(--font-weight-medium);
  text-decoration: none;
  transition: opacity var(--transition-fast);
}

.s-activity-01__back-btn:hover {
  opacity: 0.7;
}

/* --- Responsive (archive grid) --- */
@container (min-width: 500px) {
  .s-activity-01__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .s-activity-01__title {
    font-size: var(--font-size-4-xl);
  }
}

@container (min-width: 800px) {
  .s-activity-01__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* --- Responsive (single detail) --- */
@container (min-width: 600px) {
  .s-activity-01__main {
    padding-top: var(--space-9-xl);
    padding-bottom: var(--space-9-xl);
  }

  .s-activity-01__page-title {
    font-size: var(--font-size-3-xl);
  }

  .s-activity-01__staff-box {
    padding: var(--space-3-xl);
  }

  .s-activity-01__staff-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .s-activity-01__external-inner {
    flex-direction: row;
    align-items: center;
  }

  .s-activity-01__pager {
    grid-template-columns: repeat(2, 1fr);
  }

  .s-activity-01__pager-link {
    padding: var(--space-3-xl);
  }

  .s-activity-01__related-title {
    font-size: var(--font-size-2-xl);
  }
}

@container (min-width: 800px) {
  .s-activity-01__page-title {
    font-size: var(--font-size-4-xl);
  }
}