:root {
  color-scheme: light;
  --bg: #f2f2f3;
  --surface: #ffffff;
  --ink: #1c1c1f;
  --body: #2c2c32;
  --mute: #5c5c66;
  --rule: #d8d8de;
  --link: #0b4ea2;
  --link-hover: #083a78;
  --ask: #c2410c;
  --ask-ink: #ffffff;
  --tag-bg: #e8f0fe;
  --tag-ink: #1a5fb4;
  --score: #4a4a52;
  --here: #0f7a4a;
  --warn: #9a3412;
  --agent: #8a5a00;
  --font-id: "Source Serif 4", Georgia, serif;
  --font-ui: "Source Sans 3", "Segoe UI", sans-serif;
  --pad: 16px;
  --z-skip: 40;
  --z-top: 20;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  min-height: 100dvh;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-ui);
  font-size: 16px;
  line-height: 1.45;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--link); text-decoration: none; }
a:hover { color: var(--link-hover); text-decoration: underline; }
.skip {
  position: absolute;
  left: -999px;
  top: 8px;
}
.skip:focus {
  left: 8px;
  background: var(--ask);
  color: var(--ask-ink);
  padding: 8px 12px;
  z-index: var(--z-skip);
}

.top {
  display: flex;
  align-items: center;
  gap: 12px 18px;
  flex-wrap: wrap;
  padding: 8px 16px;
  border-bottom: 1px solid var(--rule);
  background: var(--surface);
  position: sticky;
  top: 0;
  z-index: var(--z-top);
}
.brand {
  color: var(--ink);
  font: italic 600 1.35rem/1 var(--font-id);
  text-decoration: none;
  letter-spacing: -0.02em;
}
.brand em { font-style: italic; color: #9a3412; }
.brand:hover { color: var(--ink); text-decoration: none; }
.who { display: flex; gap: 8px; margin-left: auto; align-items: center; }
#who-label { font-size: 14px; color: var(--body); }
#auth-box {
  border: 1px solid var(--rule);
  border-radius: 6px;
  padding: 20px;
  width: min(380px, 92vw);
  background: var(--surface);
  color: var(--ink);
}
#auth-box::backdrop { background: rgba(20, 20, 24, 0.4); }
#auth-box h2 { margin: 0 0 12px; font: 600 1.15rem var(--font-ui); }
#auth-form { display: grid; gap: 10px; }
#auth-form label { display: grid; gap: 4px; font-size: 14px; font-weight: 600; }
.auth-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 4px; }
.auth-or { margin: 4px 0 0; text-align: center; color: var(--mute); font-size: 13px; }
.btn-google {
  width: 100%;
  min-height: 44px;
  font: 600 14px var(--font-ui);
  background: var(--surface);
  color: var(--ink);
  border: 1px solid var(--rule);
  border-radius: 4px;
  cursor: pointer;
}
.btn-google:hover { background: var(--bg); }
.check {
  display: flex;
  gap: 8px;
  align-items: center;
  font-size: 14px;
  font-weight: 600;
  margin: 6px 0;
}
.check input { width: auto; min-height: 20px; }
#meet-controls { margin-bottom: 8px; }
#hallway p { margin: 0 0 8px; color: var(--body); font-size: 14px; line-height: 1.4; }
.buzz-link { display: grid; gap: 6px; margin-top: 8px; }
.buzz-link input {
  background: var(--surface);
  border: 1px solid var(--rule);
  color: var(--ink);
  border-radius: 4px;
  padding: 8px 10px;
  font: 16px/1.3 var(--font-ui);
  min-height: 44px;
  width: 100%;
}
.sort select#top-range { margin-left: 4px; }
.top-head { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.top-head h2 { margin: 0; }
#top-range {
  min-height: 36px;
  width: auto;
  font: 14px var(--font-ui);
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: 4px;
  color: var(--ink);
  padding: 4px 8px;
}
.side section[hidden] { display: none; }
.who input, .who select,
.composer input, .composer textarea,
.ask-box textarea, .answer-box textarea, .reply-box textarea,
#auth-form input, #auth-form select {
  background: var(--surface);
  border: 1px solid var(--rule);
  color: var(--ink);
  border-radius: 4px;
  padding: 8px 10px;
  font: 16px/1.3 var(--font-ui);
  min-height: 44px;
  width: 100%;
}
.who input::placeholder, .composer input::placeholder, .composer textarea::placeholder,
.ask-box textarea::placeholder, .reply-box textarea::placeholder {
  color: var(--mute);
  opacity: 1;
}
.who input { width: min(140px, 36vw); }
.who select { width: auto; }

.shell { display: grid; }
.rooms {
  display: flex;
  gap: 4px;
  overflow-x: auto;
  padding: 8px 12px;
  border-bottom: 1px solid var(--rule);
  background: var(--surface);
}
.room {
  flex: 0 0 auto;
  text-align: left;
  background: transparent;
  border: 0;
  border-radius: 4px;
  padding: 10px 12px;
  color: var(--body);
  cursor: pointer;
  min-height: 44px;
  font: 600 15px var(--font-ui);
}
.room:hover { background: var(--bg); }
.room.on {
  background: var(--tag-bg);
  color: var(--link);
  box-shadow: inset 3px 0 0 var(--ask);
}
.room .lock {
  display: inline;
  margin-left: 6px;
  font: 11px/1 var(--font-ui);
  color: var(--mute);
  font-weight: 400;
}

main {
  padding: 12px 16px 40px;
  background: var(--surface);
  min-width: 0;
}
.room-bar {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: flex-end;
  flex-wrap: wrap;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--rule);
}
.room-bar h1 {
  margin: 0;
  font: 600 1.35rem/1.15 var(--font-ui);
  letter-spacing: -0.02em;
  text-wrap: balance;
}
.room-bar p { margin: 4px 0 0; color: var(--mute); font-size: 0.92rem; }
.room-actions { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.sort {
  display: flex;
  gap: 2px;
}
.sort button {
  background: transparent;
  color: var(--mute);
  border: 0;
  min-height: 44px;
  padding: 0 12px;
  font: 600 14px var(--font-ui);
  cursor: pointer;
  border-radius: 4px;
}
.sort button:hover { background: var(--bg); color: var(--ink); }
.sort button.on { color: var(--ink); box-shadow: inset 0 -2px 0 var(--ask); }

.status { color: var(--mute); min-height: 1.3em; margin: 8px 0; font-size: 0.92rem; }
.status.bad { color: #b42318; }
.status.ok { color: var(--here); }

.ask-panel {
  margin: 0;
  border: 0;
  position: relative;
}
.ask-panel[open] {
  margin: 0 0 8px;
  border-bottom: 1px solid var(--rule);
}
.ask-panel > summary {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
  min-height: 0;
}
.composer { padding: 0 0 16px; }
.composer label { display: grid; gap: 4px; color: var(--body); font-size: 14px; font-weight: 600; margin: 8px 0 0; }
.composer-grid { display: grid; gap: 8px; }
.composer textarea { min-height: 72px; resize: vertical; }
.more { margin: 8px 0; color: var(--mute); }
.more summary { cursor: pointer; min-height: 36px; display: flex; align-items: center; font-weight: 600; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 8px 14px;
  border-radius: 4px;
  border: 1px solid transparent;
  font: 600 15px/1 var(--font-ui);
  cursor: pointer;
}
.btn-ask { background: var(--ask); color: var(--ask-ink); }
.btn-ask:hover { filter: brightness(0.95); }
.btn-ghost { background: transparent; color: var(--body); border-color: var(--rule); }
.btn-ghost:hover { background: var(--bg); }
.btn:focus-visible, a:focus-visible, input:focus-visible, textarea:focus-visible,
select:focus-visible, summary:focus-visible, .vote:focus-visible, .q-title:focus-visible {
  outline: 2px solid var(--link);
  outline-offset: 2px;
}

.feed { display: flex; flex-direction: column; }
.q {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 10px 12px;
  padding: 14px 0;
  border-bottom: 1px solid var(--rule);
}
.q:hover { background: #fafafb; }
.q-score {
  display: grid;
  justify-items: center;
  align-content: start;
  gap: 2px;
  color: var(--score);
  padding-top: 2px;
}
.vote {
  width: 44px;
  height: 44px;
  border: 0;
  background: transparent;
  color: var(--mute);
  cursor: pointer;
  padding: 0;
  display: grid;
  place-items: center;
}
.vote:hover { color: var(--ask); }
.vote svg { width: 18px; height: 18px; }
.q-score b {
  font: 700 1.15rem/1 var(--font-ui);
  color: var(--ink);
}
.q-title {
  display: block;
  width: 100%;
  text-align: left;
  background: none;
  border: 0;
  padding: 0;
  color: var(--link);
  font: 600 1.12rem/1.3 var(--font-ui);
  cursor: pointer;
  text-wrap: pretty;
  letter-spacing: -0.015em;
}
.q-title:hover { color: var(--link-hover); }
.q-excerpt {
  margin: 6px 0 0;
  color: var(--body);
  font-size: 0.95rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.q.open .q-excerpt { display: none; }
.q-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
  align-items: center;
  margin-top: 8px;
  font-size: 13px;
  color: var(--mute);
}
.tag {
  background: var(--tag-bg);
  color: var(--tag-ink);
  border-radius: 3px;
  padding: 2px 8px;
  font-size: 12px;
  font-weight: 600;
}
.q-thread { display: none; margin-top: 12px; }
.q.open .q-thread { display: grid; gap: 8px; }
.q-thread p { margin: 0 0 8px; color: var(--body); max-width: 70ch; text-wrap: pretty; }
.q-tools { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }
.ctx { display: none; margin-top: 8px; padding-top: 8px; border-top: 1px solid var(--rule); }
.q.ctx-open .ctx { display: grid; gap: 10px; }
.ctx-tabs { display: flex; gap: 8px; }
.ctx-tabs button {
  background: none;
  border: 0;
  border-bottom: 2px solid transparent;
  padding: 4px 2px;
  font: 700 12px var(--font-ui);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--mute);
  cursor: pointer;
}
.ctx-tabs button.on { color: var(--ink); border-bottom-color: var(--ask); }
.ctx-ai-wrap { display: none; }
.ctx.tab-ai .ctx-human-wrap { display: none; }
.ctx.tab-ai .ctx-ai-wrap { display: grid; gap: 8px; }
.ctx-prose { max-width: 70ch; }
.ctx-ai {
  margin: 0;
  white-space: pre-wrap;
  font: 13px/1.45 ui-monospace, Consolas, monospace;
  color: var(--body);
  max-width: 78ch;
}
form.ask-box { display: none; }
.q.ask-open form.ask-box { display: grid; gap: 8px; }
.lab {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--mute);
  margin-right: 6px;
}
.agent-layer {
  margin-top: 8px;
  padding: 8px 10px;
  border-left: 3px solid var(--agent);
  color: var(--body);
  background: #fff8e8;
}
.clarify, .replies { display: grid; gap: 8px; margin-top: 8px; }
.clarify-item, .reply {
  border: 1px solid var(--rule);
  border-radius: 4px;
  padding: 10px 12px;
  background: var(--bg);
}
.reply p, .clarify-item p { margin: 0 0 6px; }
.actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }
.ask-box, .reply-box, .answer-box { margin-top: 8px; display: grid; gap: 8px; }
.ask-box textarea, .reply-box textarea, .answer-box textarea { min-height: 56px; }

.side {
  padding: 16px;
  display: grid;
  gap: 22px;
  border-top: 1px solid var(--rule);
  background: var(--bg);
}
.side h2 {
  margin: 0 0 8px;
  font: 700 12px var(--font-ui);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--mute);
}
.side section { display: grid; gap: 6px; }
.person, .pair, .hot-item {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 10px;
  align-items: baseline;
  padding: 4px 0;
  font-size: 14px;
}
.person .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--here);
  flex: none;
}
.person .role, .when { color: var(--mute); font-size: 12px; }
.pair { display: grid; gap: 2px; padding-bottom: 8px; border-bottom: 1px solid var(--rule); }
.pair p { margin: 0; color: var(--body); }
.hot-item { justify-content: space-between; gap: 12px; }
.hot-item b { font-weight: 600; color: var(--link); }
.hot-item span { color: var(--mute); font-size: 12px; flex: none; }
.empty { color: var(--mute); margin: 0; font-size: 14px; }

@media (min-width: 980px) {
  .shell {
    grid-template-columns: 180px minmax(0, 1fr) 260px;
    align-items: start;
    max-width: 1180px;
    margin: 0 auto;
    border-left: 1px solid var(--rule);
    border-right: 1px solid var(--rule);
    min-height: calc(100dvh - 53px);
    background: var(--surface);
  }
  .rooms {
    flex-direction: column;
    overflow: visible;
    position: sticky;
    top: 53px;
    height: calc(100dvh - 53px);
    border-bottom: 0;
    border-right: 1px solid var(--rule);
    padding: 16px 8px;
    background: var(--bg);
  }
  .room { min-width: 0; width: 100%; }
  .side {
    border-top: 0;
    border-left: 1px solid var(--rule);
    position: sticky;
    top: 53px;
    height: calc(100dvh - 53px);
    overflow: auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation: none !important;
    transition-duration: 1ms !important;
  }
}