.activities-page {
  --activities-accent: #236b8e;
  --activities-border: #dfe5e8;
  --activities-muted: #5f6b73;
}

.activities-intro {
  max-width: 46rem;
  margin: 0 auto 2.25rem;
  color: var(--activities-muted);
  font-size: 1.05rem;
  text-align: center;
}

.activities-page .activities-section-heading {
  margin: 0 0 1rem;
  font-size: 1.55rem;
}

.activity-highlights {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-bottom: 2.75rem;
}

.activity-highlight-card {
  display: flex;
  min-height: 13rem;
  padding: 1.1rem;
  color: inherit;
  background: linear-gradient(145deg, #ffffff, #f6f9fb);
  border: 1px solid var(--activities-border);
  border-radius: 10px;
  box-shadow: 0 6px 18px rgba(22, 49, 64, 0.06);
  transition: border-color 160ms ease, box-shadow 160ms ease, transform 160ms ease;
}

.activity-highlight-card:visited {
  color: inherit;
}

.activity-highlight-card:hover,
.activity-highlight-card:focus-visible {
  color: inherit;
  text-decoration: none;
  border-color: var(--activities-accent);
  box-shadow: 0 10px 24px rgba(22, 49, 64, 0.11);
  transform: translateY(-2px);
}

.activity-highlight-card__content {
  display: flex;
  flex-direction: column;
}

.activity-kicker {
  color: var(--activities-accent);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.075em;
  text-transform: uppercase;
}

.activity-highlight-card h3 {
  margin: 0.55rem 0 0.65rem;
  font-size: 1.02rem;
  font-weight: 650;
  line-height: 1.4;
}

.activity-highlight-card p {
  margin: 0 0 1rem;
  color: var(--activities-muted);
  font-size: 0.88rem;
  line-height: 1.55;
}

.activity-highlight-card__link {
  margin-top: auto;
  color: var(--activities-accent);
  font-size: 0.86rem;
  font-weight: 650;
}

.activity-controls {
  display: none;
  margin-bottom: 1.25rem;
}

.activities-page[data-enhanced] .activity-controls {
  display: block;
}

.activity-filter-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0;
  list-style: none;
}

.activity-filter {
  padding: 0.38rem 0.72rem;
  color: #34434c;
  background: #fff;
  border: 1px solid var(--activities-border);
  border-radius: 999px;
  font: inherit;
  font-size: 0.82rem;
  cursor: pointer;
}

.activity-filter:hover,
.activity-filter:focus-visible {
  border-color: var(--activities-accent);
}

.activity-filter[aria-pressed="true"] {
  color: #fff;
  background: var(--activities-accent);
  border-color: var(--activities-accent);
}

.activity-filter-count {
  opacity: 0.78;
}

.activity-filter-status {
  margin: 0.8rem 0 0;
  color: var(--activities-muted);
  font-size: 0.82rem;
}

.activity-year-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.85rem;
  margin: 0 0 1.5rem;
  font-size: 0.84rem;
}

.activity-year-nav__label {
  color: var(--activities-muted);
}

.activity-year-actions {
  display: none;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: -0.75rem 0 1.25rem;
}

.activities-page[data-enhanced] .activity-year-actions {
  display: flex;
}

.activity-year-action {
  padding: 0.28rem 0.65rem;
  color: var(--activities-accent);
  background: transparent;
  border: 1px solid var(--activities-border);
  border-radius: 999px;
  font: inherit;
  font-size: 0.78rem;
  cursor: pointer;
}

.activity-year-action:hover,
.activity-year-action:focus-visible {
  border-color: var(--activities-accent);
}

.activity-year {
  margin-bottom: 0.8rem;
  border-top: 1px solid var(--activities-border);
}

.activity-year[hidden],
.activity-entry[hidden] {
  display: none !important;
}

.activity-year > summary {
  display: grid;
  grid-template-columns: 1rem minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 0.55rem;
  padding: 1rem 0 0.8rem;
  list-style: none;
  cursor: pointer;
}

.activity-year > summary::-webkit-details-marker {
  display: none;
}

.activity-year > summary::before {
  content: "+";
  color: var(--activities-accent);
  font-weight: 700;
}

.activity-year[open] > summary::before {
  content: "−";
}

.activity-year > summary .activity-year-title {
  display: inline;
  margin: 0;
  font-size: 1.5rem;
  font-weight: 650;
  line-height: 1.2;
}

.activity-year-count {
  color: var(--activities-muted);
  font-size: 0.8rem;
  font-weight: 400;
}

.activity-year-list {
  margin: 0;
}

.activity-entry {
  display: grid;
  grid-template-columns: 7.3rem minmax(0, 1fr);
  gap: 1.1rem;
  padding: 1rem 0;
  border-top: 1px solid #edf0f2;
  scroll-margin-top: 1.5rem;
}

.activity-entry:first-child {
  border-top: 0;
}

.activity-entry-meta time {
  display: block;
  color: #34434c;
  font-size: 0.86rem;
  font-weight: 650;
  font-variant-numeric: tabular-nums;
}

.activity-entry-type {
  display: inline-block;
  margin-top: 0.32rem;
  color: var(--activities-accent);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.055em;
  line-height: 1.35;
  text-transform: uppercase;
}

.activity-entry h4 {
  margin: 0 0 0.3rem;
  font-size: 1rem;
  font-weight: 650;
  line-height: 1.42;
}

.activity-entry-venue {
  margin: 0;
  color: var(--activities-muted);
  font-size: 0.86rem;
  line-height: 1.5;
}

.activity-entry-distinction {
  color: #8a5a00;
  font-weight: 650;
}

.activity-entry-detail + .activity-entry-detail::before {
  content: "•";
  margin: 0 0.42rem;
  color: #8b969c;
  font-weight: 800;
}

.activity-entry-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.75rem;
  margin: 0.55rem 0 0;
  font-size: 0.8rem;
}

.activity-entry-links a {
  font-weight: 600;
}

@media screen and (max-width: 760px) {
  .activity-highlights {
    grid-template-columns: 1fr;
  }

  .activity-highlight-card {
    min-height: 0;
  }
}

@media screen and (max-width: 600px) {
  .activities-intro {
    text-align: left;
  }

  .activity-filter-list {
    margin-left: 0;
  }
  
  .activity-entry {
    grid-template-columns: 1fr;
    gap: 0.35rem;
  }
  
  .activity-entry-meta {
    display: flex;
    align-items: baseline;
    gap: 0.65rem;
  }
  
  .activity-entry-type {
    margin-top: 0;
  }

}

@media (prefers-reduced-motion: reduce) {
  .activity-highlight-card {
    transition: none;
  }
}