:root {
  --bg: #f6f3ee; --panel: #fffdfa; --text: #1f1d1b; --muted: #6f6a63; --line: #e6dfd5;
  --accent: #6b4f3a; --accent-text: #fff; --ok: #1a7f37; --okbg: #e3f4e6; --warn: #9a6700; --warnbg: #fff4ce;
  --err: #b42318; --errbg: #fde7e4; --me: #6b4f3a; --them: #ece6dd;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #161412; --panel: #211e1b; --text: #eee8e1; --muted: #a59d93; --line: #3a342e;
    --accent: #c9a27e; --accent-text: #1a1512; --okbg: #12391f; --ok: #7ee2a0; --warnbg: #3d3000; --warn: #ffd666;
    --errbg: #4a1512; --err: #ffb4ab; --me: #8a6a50; --them: #2e2925;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--text); font: 15px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
.hidden { display: none !important; }
h1 { margin: 0 0 4px; font-size: 26px; }
h2 { margin: 0 0 8px; font-size: 17px; }
.muted { color: var(--muted); } .small { font-size: 13px; } .err { color: var(--err); min-height: 1em; }
.row { display: flex; align-items: center; } .between { justify-content: space-between; } .gap { gap: 8px; } .wrap { flex-wrap: wrap; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 14px; margin-bottom: 12px; }
label { display: block; font-size: 13px; color: var(--muted); margin: 8px 0; }
input, textarea, select { width: 100%; margin-top: 4px; padding: 10px 12px; border: 1px solid var(--line); border-radius: 10px; background: var(--bg); color: var(--text); font: inherit; }
textarea { min-height: 46vh; font: 14px/1.5 ui-monospace, SFMono-Regular, Consolas, monospace; resize: vertical; }
button { font: inherit; border-radius: 10px; padding: 10px 14px; border: 1px solid var(--line); background: var(--panel); color: var(--text); cursor: pointer; }
button.primary { background: var(--accent); color: var(--accent-text); border-color: var(--accent); font-weight: 600; }
button.ghost { background: transparent; } button.small { padding: 6px 10px; font-size: 13px; } button.block { width: 100%; }
button:disabled { opacity: .5; cursor: default; }
.badge { font-size: 12px; padding: 2px 8px; border-radius: 10px; background: var(--them); }
.badge.ok { background: var(--okbg); color: var(--ok); } .badge.warn { background: var(--warnbg); color: var(--warn); } .badge.err { background: var(--errbg); color: var(--err); }

.screen { min-height: 100vh; display: grid; place-items: center; padding: 16px; }
.login { width: 100%; max-width: 360px; }
.top { position: sticky; top: 0; z-index: 5; display: flex; gap: 10px; align-items: center; padding: 12px 16px; background: var(--panel); border-bottom: 1px solid var(--line); }
.top strong { margin-right: auto; }
main { max-width: 860px; margin: 0 auto; padding: 14px 16px 96px; }
.tabs { position: fixed; bottom: 0; left: 0; right: 0; display: flex; background: var(--panel); border-top: 1px solid var(--line); padding-bottom: env(safe-area-inset-bottom); }
.tabs button { flex: 1; border: 0; border-radius: 0; background: transparent; padding: 8px 2px; font-size: 18px; display: flex; flex-direction: column; align-items: center; color: var(--muted); }
.tabs button span { font-size: 11px; }
.tabs button.on { color: var(--accent); font-weight: 600; }

.kb-list { display: flex; gap: 6px; overflow-x: auto; padding-bottom: 8px; margin-bottom: 4px; }
.kb-list button { white-space: nowrap; font-size: 13px; padding: 7px 11px; }
.kb-list button.on { background: var(--accent); color: var(--accent-text); border-color: var(--accent); }
.kb-list button.dirty::after { content: " •"; color: var(--warn); }
.history { margin-top: 10px; border-top: 1px solid var(--line); padding-top: 8px; }
.history .item { display: flex; justify-content: space-between; gap: 8px; padding: 8px 0; border-bottom: 1px dashed var(--line); font-size: 13px; }
.history pre { white-space: pre-wrap; font-size: 12px; background: var(--bg); padding: 8px; border-radius: 8px; max-height: 200px; overflow: auto; }

.chat-card { display: flex; flex-direction: column; min-height: 70vh; }
.chat-log { flex: 1; display: flex; flex-direction: column; gap: 4px; padding: 8px 0; overflow-y: auto; }
.bub { max-width: 82%; padding: 8px 12px; border-radius: 16px; white-space: pre-wrap; word-wrap: break-word; }
.bub.khach { align-self: flex-end; background: var(--me); color: #fff; border-bottom-right-radius: 4px; }
.bub.bot { align-self: flex-start; background: var(--them); border-bottom-left-radius: 4px; }
.bub a { color: inherit; }
.meta { align-self: center; font-size: 12px; color: var(--muted); padding: 4px 10px; text-align: center; }
.chat-input { display: flex; gap: 8px; } .chat-input input { margin: 0; }

.seg { display: flex; border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
.seg button { flex: 1; border: 0; border-radius: 0; font-size: 14px; }
.seg button.on { background: var(--accent); color: var(--accent-text); font-weight: 600; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0 12px; }
.switch { display: flex; align-items: center; gap: 8px; color: var(--text); font-size: 14px; }
.switch input { width: auto; margin: 0; }
.fu-step { border: 1px dashed var(--line); border-radius: 10px; padding: 8px 10px; margin-top: 8px; }
.fu-step textarea { min-height: 70px; font-family: inherit; }

.slot-table { width: 100%; border-collapse: collapse; font-size: 14px; margin: 8px 0 12px; }
.slot-table th, .slot-table td { border-bottom: 1px solid var(--line); padding: 6px 4px; text-align: center; }
.slot-table th:first-child, .slot-table td:first-child { text-align: left; }
.slot-table input { width: 56px; padding: 6px; margin: 0; text-align: center; }
.slot-table .full { color: var(--err); font-size: 11px; display: block; } .slot-table .open { color: var(--ok); font-size: 11px; display: block; }

.draft { border-bottom: 1px solid var(--line); padding: 10px 0; }
.draft .when { font-size: 12px; color: var(--muted); }
.draft .ctx { font-size: 13px; color: var(--muted); margin: 4px 0; }
.draft .reply { white-space: pre-wrap; background: var(--them); padding: 8px 10px; border-radius: 10px; }

.toast { position: fixed; left: 50%; bottom: 84px; transform: translateX(-50%); background: var(--text); color: var(--bg); padding: 10px 16px; border-radius: 10px; z-index: 20; max-width: 90vw; }
@media (max-width: 560px) { .grid2 { grid-template-columns: 1fr; } textarea { min-height: 40vh; } }