.activity-filters { display: flex; align-items: end; flex-wrap: wrap; gap: 12px; margin-top: 24px; padding: 20px; background: var(--surface); border: 1px solid var(--edge); border-radius: 12px; }
.activity-filters > div { min-width: 140px; flex: 1; }
.activity-filters .activity-search { flex: 2; min-width: 240px; }
.activity-filters label, .activity-comment-form label { display: block; margin-bottom: 7px; color: var(--ink-muted); font-size: 14px; }
.activity-filters .field { width: 100%; }
.activity-story { flex: 1 1 70%; }
.activity-social { flex: 0 0 100%; display: flex; gap: 18px; align-items: start; border-top: 1px solid var(--edge); margin-top: 8px; padding-top: 8px; }
.activity-like { flex-shrink: 0; }
.activity-like-button, .activity-comments > summary { display: flex; align-items: center; gap: 8px; min-height: 44px; color: var(--ink-muted); font-size: 14px; cursor: pointer; }
.activity-like-button:hover, .activity-comments > summary:hover, .activity-like-button.is-liked { color: var(--accent); }
.activity-like-button > span:first-child { font-size: 22px; }
.activity-comments { flex: 1; min-width: 0; }
.activity-comments > summary { width: fit-content; list-style: none; }
.activity-comments > summary::-webkit-details-marker { display: none; }
.activity-comments > summary::before { content: '▸'; }
.activity-comments[open] > summary::before { content: '▾'; }
.activity-comments > summary > span[aria-hidden] { display: none; }
.activity-conversation { padding: 12px 0; max-width: 760px; }
.activity-conversation-heading, .activity-comment-footer, .activity-comment-meta, .activity-comment-pages { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 12px; }
.activity-conversation-heading { margin-bottom: 16px; }
.activity-conversation-heading h2 { font-weight: 600; }
.activity-conversation-heading .link-quiet, .activity-comment-meta, .activity-comment-footer { font-size: 13px; color: var(--ink-muted); }
.activity-comment-form textarea { display: block; width: 100%; resize: vertical; }
.activity-comment-footer { margin-top: 8px; }
.activity-comment { border-top: 1px solid var(--edge); margin-top: 18px; padding-top: 16px; }
.activity-comment-meta { justify-content: start; }
.activity-comment-meta form { margin-left: auto; }
.activity-comment-body { white-space: pre-wrap; overflow-wrap: anywhere; margin-top: 8px; line-height: 1.5; }
.activity-comment-empty { margin-top: 20px; color: var(--ink-muted); font-size: 14px; }
.activity-comment-error { color: var(--danger); margin-bottom: 8px; }
.activity-comment-pages { margin-top: 20px; }
.activity-social :is(button, a, summary):focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; border-radius: 4px; }
@media (max-width: 600px) {
  .activity-filters { padding: 14px; }
  .activity-filters .activity-search { flex-basis: 100%; min-width: 0; }
  .activity-social { flex-wrap: wrap; gap: 0 16px; }
  .activity-comments[open] { flex-basis: 100%; }
  .activity-comment-footer > span { max-width: 170px; }
}

.activity-like-button:disabled { cursor: wait; }
.activity-like-error { max-width: 240px; color: var(--danger); font-size: 13px; margin-top: 6px; }