:root {
  color-scheme: light dark;
  --fg: #111;
  --muted: #5a5a5a;
  --bg: #f7f7f5;
  --card: #fff;
  --line: #e2e2dc;
  --accent: #0a7a4b;
  --accent-soft: #e6f6ee;
  --danger: #b33;
  --chip: #111;
  --chip-fg: #fff;
  --radius: 12px;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
@media (prefers-color-scheme: dark) {
  :root {
    --fg: #eee;
    --muted: #a0a0a0;
    --bg: #0d0d0d;
    --card: #161616;
    --line: #2a2a2a;
    --accent: #3dca8a;
    --accent-soft: #123526;
    --chip: #eee;
    --chip-fg: #111;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font: 16px/1.5 var(--font);
  color: var(--fg);
  background: var(--bg);
  min-height: 100vh;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
code, .mono { font-family: var(--mono); font-size: 0.9em; }
.wrap { max-width: 42rem; margin: 0 auto; padding: 1.25rem 1rem 4rem; }
.topbar {
  display: flex; flex-wrap: wrap; align-items: center; gap: 0.75rem;
  justify-content: space-between; margin-bottom: 1.25rem;
}
.brand { display: flex; align-items: baseline; gap: 0.5rem; }
.brand h1 { font-size: 1.25rem; margin: 0; letter-spacing: -0.02em; }
.brand .tag { font-size: 0.75rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.06em; }
.nav { display: flex; flex-wrap: wrap; gap: 0.65rem; font-size: 0.9rem; color: var(--muted); }
.identity {
  display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 0.65rem 0.85rem; margin-bottom: 1rem;
}
.identity .npub { font-family: var(--mono); font-size: 0.8rem; color: var(--muted); word-break: break-all; }
.identity .status { font-size: 0.85rem; color: var(--muted); }
.btn {
  appearance: none; border: 1px solid var(--line); background: var(--card);
  color: var(--fg); border-radius: 8px; padding: 0.4rem 0.75rem;
  font: inherit; font-size: 0.9rem; cursor: pointer;
}
.btn:hover { border-color: var(--accent); }
.btn:disabled { opacity: 0.55; cursor: not-allowed; }
.btn.primary { border-color: var(--accent); color: var(--accent); background: var(--accent-soft); }
.btn.ghost { background: transparent; }
.btn.chip {
  border-color: var(--chip); background: var(--chip); color: var(--chip-fg);
  border-radius: 999px; padding: 0.35rem 0.8rem; font-weight: 600;
  display: inline-flex; align-items: baseline; gap: 0.1rem;
}
.btn.chip .unit { font-size: 0.85em; opacity: 0.85; }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1rem 1.1rem; margin: 0 0 0.85rem;
}
.card h2, .card h3 { margin: 0 0 0.4rem; font-size: 1.05rem; }
.meta { font-size: 0.8rem; color: var(--muted); display: flex; flex-wrap: wrap; gap: 0.5rem 0.85rem; }
.meta a { color: var(--muted); }
.body { margin: 0.65rem 0 0; white-space: pre-wrap; word-break: break-word; }
.sticky-badge {
  display: inline-block; font-size: 0.7rem; text-transform: uppercase;
  letter-spacing: 0.05em; border: 1px solid var(--accent); color: var(--accent);
  border-radius: 999px; padding: 0.05rem 0.45rem;
}
.compose label, .reply-box label { display: block; font-size: 0.85rem; color: var(--muted); margin: 0.5rem 0 0.25rem; }
.compose input, .compose textarea, .reply-box textarea, .compose .field input {
  width: 100%; font: inherit; color: var(--fg); background: var(--bg);
  border: 1px solid var(--line); border-radius: 8px; padding: 0.5rem 0.65rem;
}
.compose textarea, .reply-box textarea { min-height: 6rem; resize: vertical; }
.compose .row { display: flex; flex-wrap: wrap; gap: 0.5rem; align-items: end; margin-top: 0.75rem; }
.compose .row .grow { flex: 1 1 12rem; }
.thread-list { list-style: none; margin: 0; padding: 0; }
.thread-list li { margin: 0 0 0.65rem; }
.thread-list a.thread-link { display: block; color: inherit; text-decoration: none; }
.thread-list a.thread-link:hover .card { border-color: var(--accent); }
.tip-panel { margin-top: 0.85rem; padding-top: 0.75rem; border-top: 1px solid var(--line); }
.tip-label { font-size: 0.85rem; color: var(--muted); margin: 0 0 0.4rem; }
.tip-dest { font-size: 0.8rem; color: var(--muted); margin: 0 0 0.5rem; word-break: break-all; }
.tip-chips { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.tip-status { font-size: 0.85rem; margin: 0.5rem 0 0; color: var(--muted); }
.tip-status.ok { color: var(--accent); }
.tip-status.err { color: var(--danger); }
.tip-qr { margin-top: 0.5rem; max-width: 180px; }
.lede { color: var(--muted); margin: 0 0 1rem; }
.footer { margin-top: 2rem; font-size: 0.8rem; color: var(--muted); }
.footer code { color: var(--muted); }
.empty { color: var(--muted); font-size: 0.95rem; padding: 0.5rem 0; }
.todo {
  border-left: 3px solid var(--accent); padding: 0.35rem 0.65rem; margin: 0.5rem 0;
  background: var(--accent-soft); font-size: 0.85rem; color: var(--muted);
}

.wrap-wide { max-width: 52rem; }
.topic-bar { display:flex; flex-wrap:wrap; gap:0.4rem; margin:0.75rem 0 1rem; }
.btn.chip-topic {
  border-radius:999px; font-size:0.85rem; padding:0.3rem 0.75rem;
  background:var(--card); color:var(--muted);
}
.btn.chip-topic.active, .btn.chip-topic:hover {
  border-color:var(--accent); color:var(--accent); background:var(--accent-soft);
}
.topic-pill {
  display:inline-block; font-size:0.7rem; text-transform:uppercase; letter-spacing:0.04em;
  color:var(--muted); border:1px solid var(--line); border-radius:999px; padding:0.05rem 0.45rem;
  margin-right:0.35rem;
}
.thread-card h3 { margin-top:0.35rem; }
.replies-rail {
  margin-top:0.85rem; padding-top:0.75rem; border-top:1px dashed var(--line);
}
.replies-label { margin:0 0 0.5rem; font-size:0.8rem; color:var(--muted); font-weight:600; text-transform:uppercase; letter-spacing:0.04em; }
.reply-card {
  background:var(--bg); border:1px solid var(--line); border-radius:10px;
  padding:0.65rem 0.8rem; margin:0 0 0.5rem; margin-left:0.5rem;
  border-left:3px solid var(--accent);
}
.board-list .empty { color:var(--muted); }

/* Collapsed replies on board */
.replies-fold {
  margin-top: 0.85rem;
  padding-top: 0.65rem;
  border-top: 1px dashed var(--line);
}
.replies-fold > summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
  font-size: 0.9rem;
  color: var(--accent);
  font-weight: 600;
  user-select: none;
  padding: 0.35rem 0.15rem;
}
.replies-fold > summary::-webkit-details-marker { display: none; }
.replies-fold > summary::before {
  content: "▸";
  display: inline-block;
  margin-right: 0.35rem;
  transition: transform 0.12s ease;
}
.replies-fold[open] > summary::before { transform: rotate(90deg); }
.replies-fold .fold-hint {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--muted);
}
.replies-fold .replies-rail {
  margin-top: 0.55rem;
  padding-top: 0;
  border-top: none;
}
.thread-card .no-replies { margin-top: 0.75rem; }
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(9.5rem, 1fr));
  gap: 0.65rem;
  margin: 1rem 0;
}
.stat-tile {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.85rem 1rem;
}
.stat-tile .n {
  font-size: 1.65rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
}
.stat-tile .l {
  font-size: 0.8rem;
  color: var(--muted);
  margin-top: 0.25rem;
}