:root {
  --bg: var(--tg-theme-bg-color, #ffffff);
  --text: var(--tg-theme-text-color, #111111);
  --hint: var(--tg-theme-hint-color, #8a8a8a);
  --accent: var(--tg-theme-button-color, #2a8bf2);
  --accent-text: var(--tg-theme-button-text-color, #ffffff);
  --surface: var(--tg-theme-secondary-bg-color, #f2f2f5);
  --danger: var(--tg-theme-destructive-text-color, #d63a3a);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

main { padding: 20px 16px 32px; max-width: 560px; margin: 0 auto; }
section { display: flex; flex-direction: column; gap: 12px; }
section[hidden], p[hidden] { display: none; }
.center { min-height: 60vh; justify-content: center; text-align: center; }

h1 { font-size: 22px; font-weight: 600; margin: 0 0 4px; }
.muted { color: var(--hint); margin: 0; }
.or { text-align: center; font-size: 14px; }

.facts { margin: 0; padding-left: 20px; display: flex; flex-direction: column; gap: 8px; }

input {
  width: 100%;
  font: inherit;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid transparent;
  background: var(--surface);
  color: var(--text);
}
input:focus { outline: none; border-color: var(--accent); }

button {
  font: inherit;
  padding: 12px 14px;
  border-radius: 10px;
  border: 0;
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
}
button.primary { background: var(--accent); color: var(--accent-text); font-weight: 600; }
button.link { background: none; color: var(--accent); padding: 4px; }
button:disabled { opacity: .5; cursor: default; }

.error { color: var(--danger); margin-top: 16px; text-align: center; }

.head { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
button.small { padding: 8px 12px; font-size: 14px; }

.list { list-style: none; margin: 0; padding: 0; }
.list li {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 2px; border-bottom: 1px solid var(--surface);
}
.list .grow { flex: 1; min-width: 0; }
.list .title { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.list .sub { color: var(--hint); font-size: 13px; }
.list input[type=checkbox] { width: 22px; height: 22px; accent-color: var(--accent); flex: none; }

.badge {
  font-size: 11px; padding: 2px 7px; border-radius: 8px; white-space: nowrap;
  background: var(--surface); color: var(--hint);
}
.badge.llm { color: var(--danger); }

.chips { display: flex; gap: 6px; flex-wrap: wrap; }
.chip { padding: 6px 12px; border-radius: 16px; font-size: 14px; }
.chip.on { background: var(--accent); color: var(--accent-text); }

.toggle { display: flex; align-items: center; gap: 8px; color: var(--hint); font-size: 14px; }
.toggle input { width: 18px; height: 18px; accent-color: var(--accent); }

.small-text { font-size: 13px; }
.list li.clickable { cursor: pointer; }
.list li.all .title { font-weight: 600; }

.turns { display: flex; flex-direction: column; gap: 10px; padding-bottom: 8px; }
.bubble { padding: 9px 12px; border-radius: 14px; max-width: 92%; white-space: pre-wrap; word-wrap: break-word; }
.bubble.q { align-self: flex-end; background: var(--accent); color: var(--accent-text); border-bottom-right-radius: 4px; }
.bubble.a { align-self: flex-start; background: var(--surface); border-bottom-left-radius: 4px; }
.bubble.a.pending { color: var(--hint); }
.bubble sup { color: var(--accent); font-size: 11px; }
.meta { font-size: 12px; color: var(--hint); display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin-top: 6px; }
.meta button { padding: 0; font-size: 12px; background: none; color: var(--accent); }

details.cites { margin-top: 8px; font-size: 13px; }
details.cites summary { color: var(--accent); cursor: pointer; }
.cite { padding: 6px 0; border-top: 1px solid var(--bg); }
.cite .who { color: var(--hint); font-size: 12px; }
.cite .del { color: var(--danger); font-size: 12px; }
.cite button { padding: 2px 0; font-size: 12px; background: none; color: var(--accent); margin-right: 12px; }

.composer {
  position: sticky; bottom: 0; background: var(--bg);
  padding: 8px 0 calc(8px + env(safe-area-inset-bottom)); display: flex; flex-direction: column; gap: 6px;
}
.chip.ghost { background: none; border: 1px solid var(--surface); color: var(--accent); }
.send-row { display: flex; gap: 8px; align-items: flex-end; }
.send-row textarea {
  flex: 1; font: inherit; padding: 10px 12px; border-radius: 18px; border: 0; resize: none;
  background: var(--surface); color: var(--text); max-height: 120px;
}
.send-row button { width: 42px; height: 42px; border-radius: 50%; padding: 0; font-size: 20px; }

.turn { display: flex; flex-direction: column; gap: 6px; }

h2 { font-size: 17px; font-weight: 600; margin: 12px 0 0; }
button.link.left { align-self: flex-start; padding: 0; }
.tier-row { display: flex; gap: 8px; align-items: center; font-size: 14px; color: var(--hint); }
.tier-row select, .time-row input {
  font: inherit; padding: 6px 8px; border-radius: 8px; border: 0; background: var(--surface); color: var(--text);
}
.time-row { display: flex; gap: 16px; }
.time-row input { width: auto; }
.tier-row[hidden] { display: none; }

.links { display: flex; gap: 16px; }
button.danger { background: none; border: 1px solid var(--danger); color: var(--danger); }
.danger-title { color: var(--danger); margin-top: 28px; }
.invite { background: var(--surface); padding: 10px 12px; border-radius: 10px; word-break: break-all; font-size: 14px; }
button[hidden] { display: none; }

.qr-box { align-self: center; background: #fff; padding: 12px; border-radius: 12px; }
.qr-box img, .qr-box canvas { display: block; }