/* Chat cards, message content and event feed. Global components live in design-system.css. */
.qr { display: block; width: 210px; height: 210px; margin: var(--space-6) auto; }

.search { display: flex; gap: var(--space-2); }
.search input { min-width: 220px; }
.chat-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: var(--space-4); }
.chat-card { padding: var(--space-5); border: 1px solid var(--line); border-radius: var(--radius-lg); color: var(--ink); background: var(--surface); text-decoration: none; transition: transform .2s ease, box-shadow .2s ease; }
.chat-card:hover { box-shadow: var(--chat-card-shadow); transform: translateY(-3px); }
.chat-card-top { display: flex; justify-content: space-between; }
.channel-icon { display: grid; place-items: center; width: 34px; height: 34px; border-radius: var(--radius-md); color: var(--chat-info-text); background: var(--chat-info-bg); font-weight: 800; }
.type { color: var(--muted); font-size: 13px; }
.chat-card h2 { margin: 18px 0 var(--space-2); font-size: 19px; }
.chat-card p { margin: 0 0 14px; color: var(--text); }
.chat-card small { color: var(--muted); }
.back { display: inline-block; margin-bottom: var(--space-5); color: var(--chat-info-text); text-decoration: none; }

.chat-heading { padding: 25px; margin-bottom: 18px; border: 1px solid var(--line); border-radius: var(--radius-lg); background: var(--surface); }
.chat-heading span { display: block; margin-top: 15px; color: var(--chat-info-text); font-size: 14px; font-weight: 700; }

.history { display: grid; gap: 10px; }
.message { padding: 18px 20px; border: 1px solid var(--line); border-left: 4px solid var(--chat-info-border); border-radius: var(--radius-lg); background: var(--surface); animation: message-in .3s ease-out both; }
.message--deleted { border-left-color: var(--chat-deleted-border); background: var(--chat-deleted-bg); }
.message-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; color: var(--muted); font-size: 13px; }
.message-meta strong { color: var(--ink); font-size: 15px; }
.state { padding: 2px 6px; border-radius: var(--radius-sm); color: var(--chat-info-text); background: var(--chat-info-bg); }
.state--deleted { color: var(--danger-text); background: var(--danger-bg); }
.message-text { margin: 12px 0; overflow-wrap: anywhere; line-height: 1.6; }
.markdown p { margin: .55em 0; }
.markdown p:first-child { margin-top: 0; }
.markdown p:last-child { margin-bottom: 0; }
.markdown h1,
.markdown h2,
.markdown h3 { margin: .7em 0 .35em; font-size: 1.06em; }
.markdown a,
.file-card a { color: var(--chat-info-text); text-decoration: none; }
.markdown pre { overflow: auto; padding: 10px; border-radius: var(--radius-sm); color: var(--chat-code-text); background: var(--chat-code-bg); }
.message-removed { margin: 12px 0 0; color: var(--danger-text); }
.reply-reference { display: grid; gap: 3px; max-width: 100%; margin-top: 12px; padding: 9px 11px; border-left: 3px solid var(--chat-info-border); border-radius: 0 var(--radius-md) var(--radius-md) 0; color: var(--chat-info-text); background: var(--chat-info-bg); text-align: left; }
.reply-reference small { overflow: hidden; color: var(--muted); text-overflow: ellipsis; white-space: nowrap; }
.thread-open { margin-top: 12px; color: var(--chat-info-text); background: var(--chat-info-bg); }
.thread-label { display: inline-block; margin-top: 12px; color: var(--chat-info-text); font-size: 13px; font-weight: 700; }

.files,
.reactions { display: flex; flex-wrap: wrap; gap: var(--space-2); margin-top: 12px; }
.file-card { display: flex; gap: 10px; max-width: 100%; padding: var(--space-2); border-radius: var(--radius-md); color: var(--text-muted); background: var(--soft); font-size: 13px; }
.file-card img { width: 74px; height: 58px; border-radius: var(--radius-sm); object-fit: cover; }
.file-card div { display: grid; gap: 2px; }
.file-card small { color: var(--muted); }
.reaction { position: relative; display: inline-flex; align-items: center; gap: 4px; padding: 7px 9px; border-radius: var(--radius-sm); color: var(--text-muted); background: var(--soft); font-size: 13px; cursor: default; }
.reaction-emoji { font-size: 17px; }
.reaction-tooltip { position: absolute; z-index: 4; bottom: calc(100% + 7px); left: 0; display: none; max-width: 260px; padding: 7px 9px; border-radius: var(--radius-sm); color: var(--surface); background: var(--brand-navy); font-size: 12px; line-height: 1.35; white-space: normal; }
.reaction:hover .reaction-tooltip,
.reaction:focus .reaction-tooltip { display: block; }
.revisions { margin-top: 14px; padding-top: 12px; border-top: 1px dashed var(--line); }
.revisions summary { color: var(--chat-info-text); font-size: 13px; font-weight: 700; cursor: pointer; }
.revision { padding: 10px 0; border-bottom: 1px solid var(--border); }
.revision time { color: var(--muted); font-size: 12px; }

.details-panel { position: sticky; top: 88px; min-height: 260px; border: 1px solid var(--line); border-radius: var(--radius-lg); background: var(--surface); transition: box-shadow .25s ease; }
.details-panel--open { box-shadow: var(--chat-card-shadow); }
.details-placeholder { padding: 28px; color: var(--muted); text-align: center; }
.details-placeholder img { width: 72px; height: 72px; margin-bottom: var(--space-1); }
.details-placeholder h2 { margin: var(--space-2) 0; color: var(--ink); }
.details-heading { display: flex; align-items: start; gap: 10px; padding: 18px 18px 10px; border-bottom: 1px solid var(--line); }
.details-heading h2 { flex: 1; margin: 0; font-size: 22px; }
.panel-close { padding: 0 var(--space-2); color: var(--muted); background: transparent; font-size: 25px; }
.thread-history { display: grid; gap: 10px; padding: 14px; }
.thread-history .message { padding: 14px; border-left-width: 3px; }

.events { border: 1px solid var(--line); border-radius: var(--radius-lg); background: var(--surface); }
.event { display: flex; align-items: center; gap: 14px; padding: 17px 20px; border-bottom: 1px solid var(--line); }
.event:last-child { border: 0; }
.event-dot { flex: none; width: 10px; height: 10px; border-radius: 50%; background: var(--brand-primary); }
.event p { margin: var(--space-1) 0 0; color: var(--muted); font-size: 14px; }
.event-right { display: grid; gap: 5px; margin-left: auto; color: var(--muted); font-size: 13px; text-align: right; }
.pager { display: flex; justify-content: center; gap: var(--space-5); margin-top: var(--space-6); color: var(--muted); }
.pager a { color: var(--chat-info-text); text-decoration: none; }

@keyframes message-in { from { opacity: 0; transform: translateY(7px); } to { opacity: 1; transform: translateY(0); } }

@media (max-width: 900px) {
  .chat-layout { grid-template-columns: 1fr; }
  .details-panel { position: relative; top: auto; }
  .details-panel--open { order: -1; }
}

@media (max-width: 680px) {
  .search { margin-top: 18px; }
  .search input { flex: 1; min-width: 0; }
  .event { align-items: flex-start; }
  .event-right { margin-left: 0; text-align: left; }
}