:root{
  --bg:#fbf7f1; --paper:#ffffff; --ink:#2b2520; --muted:#7a6f64;
  --accent:#7a5b3a; --accent-soft:#e8d9c1; --line:#ece4d4;
  --bubble-user:#7a5b3a; --bubble-bot:#f3ece0;
  --shadow:0 1px 2px rgba(0,0,0,.04), 0 8px 24px rgba(60,40,20,.05);
  --radius:14px;
}
*{box-sizing:border-box}
[hidden]{display:none !important}
html,body{margin:0;padding:0;background:var(--bg);color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",system-ui,Helvetica,Arial,sans-serif;
  font-size:15px;line-height:1.5;height:100%}
body{display:flex;flex-direction:column;min-height:100vh}

a{color:var(--accent);text-decoration:underline}
a:hover{text-decoration:none}

/* ------- top banner */
#banner{background:#5c4a36;color:#fbf7f1;padding:7px 16px;font-size:12px;text-align:center}
#banner a{color:#fbf7f1;text-decoration:underline}

/* ------- top bar */
#topbar{
  display:flex;align-items:center;gap:14px;padding:12px 20px;
  background:var(--paper);border-bottom:1px solid var(--line);
}
.brand{display:flex;align-items:center;gap:10px;flex:1}
.brand-mark{width:34px;height:34px;border-radius:9px;background:var(--accent);color:#fff;
  display:grid;place-items:center;font-weight:700;font-size:13px}
.brand-name{font-weight:600;font-size:14px}
.brand-sub{font-size:11px;color:var(--muted);margin-top:1px}
.topbar-actions{display:flex;gap:8px;align-items:center}

select,input,textarea{font:inherit;color:inherit;background:#fff;border:1px solid var(--line);
  border-radius:8px;padding:7px 10px;outline:none}
select:focus,input:focus,textarea:focus{border-color:var(--accent)}
textarea{resize:none;font-family:inherit}

button{font:inherit;cursor:pointer;border:0;border-radius:9px;padding:7px 14px;font-weight:600}
button.primary{background:var(--accent);color:#fff}
button.primary:hover{filter:brightness(1.05)}
button.primary:disabled{opacity:.55;cursor:not-allowed}
button.ghost{background:transparent;color:var(--ink);border:1px solid var(--line);padding:6px 12px}
button.ghost:hover{border-color:var(--accent)}
button.ghost-small{background:transparent;color:var(--muted);border:1px dashed var(--line);
  padding:5px 10px;font-size:12px;font-weight:500;border-radius:6px}
button.ghost-small:hover{color:var(--ink);border-color:var(--accent)}

/* ------- login screen */
.centered{display:flex;align-items:center;justify-content:center;flex:1;padding:40px 20px}
.card{background:var(--paper);border:1px solid var(--line);border-radius:16px;
  padding:28px;max-width:420px;width:100%;box-shadow:var(--shadow)}
.card h1{margin:0 0 6px;font-size:22px;color:var(--accent)}
.card .lead{color:var(--muted);margin:0 0 18px}
.card form{display:flex;flex-direction:column;gap:10px}
.card label{font-size:12px;color:var(--muted)}
.card .footnote{font-size:11px;color:var(--muted);margin-top:14px}
.card .hint{padding:10px 12px;border-radius:8px;background:var(--accent-soft);font-size:13px;color:#5c4a36}

/* ------- chat layout */
#app{display:grid;grid-template-columns:260px 1fr;flex:1;min-height:0}
@media (max-width:760px){#app{grid-template-columns:1fr}#sidebar{display:none}}

#sidebar{background:#f5ede0;border-right:1px solid var(--line);padding:16px 14px;overflow:auto;
  display:flex;flex-direction:column;gap:14px}
#sidebar h3{font-size:11px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin:6px 4px 4px}
.card-soft{background:#fff;border:1px solid var(--line);border-radius:10px;padding:10px 12px;font-size:13px;line-height:1.4}
.card-soft em{color:var(--muted);font-style:normal}

.conv-list{display:flex;flex-direction:column;gap:6px}
.conv-item{font-size:12px;padding:8px 10px;border-radius:8px;background:#fff;
  border:1px solid var(--line);cursor:pointer;line-height:1.35}
.conv-item:hover{border-color:var(--accent)}
.conv-item.active{border-color:var(--accent);box-shadow:0 0 0 2px var(--accent-soft)}
.conv-item .when{color:var(--muted);font-size:11px}
.conv-item .triage-tag{display:inline-block;padding:1px 6px;border-radius:4px;font-size:10px;letter-spacing:.04em;font-weight:700;margin-left:4px}
.t-green {background:#dcfce7;color:#166534}
.t-yellow{background:#fef3c7;color:#92400e}
.t-red   {background:#fee2e2;color:#991b1b}

#chat{display:flex;flex-direction:column;min-width:0}
.messages{flex:1;overflow:auto;padding:24px 20px;display:flex;flex-direction:column;gap:12px}
.msg{max-width:760px;width:fit-content;padding:11px 14px;border-radius:14px;
  white-space:pre-wrap;word-wrap:break-word;line-height:1.5;font-size:14.5px}
.msg.user{align-self:flex-end;background:var(--bubble-user);color:#fff;border-bottom-right-radius:4px}
.msg.assistant{align-self:flex-start;background:var(--bubble-bot);color:var(--ink);border-bottom-left-radius:4px}
.msg.typing{font-style:italic;color:var(--muted);background:transparent;padding:6px 14px}

.welcome{padding:30px 20px 20px;text-align:left;max-width:680px}
.welcome h2{margin:0 0 6px;color:var(--accent);font-size:20px}
.welcome p{color:var(--muted);margin:0 0 16px}
.welcome .prompts{display:flex;flex-wrap:wrap;gap:8px}
.prompt-chip{background:#fff;border:1px solid var(--line);color:var(--ink);
  padding:8px 12px;border-radius:999px;font-size:13px;font-weight:500}
.prompt-chip:hover{border-color:var(--accent)}

#composer{display:flex;gap:10px;padding:12px 20px;border-top:1px solid var(--line);background:var(--paper);align-items:flex-end}
#composer textarea{flex:1;min-height:42px;max-height:160px;padding:10px 12px;border-radius:12px}
#composer button{height:42px;padding:0 18px}

#actions{display:flex;gap:8px;padding:0 20px 8px;background:var(--paper)}
.disclaimer{font-size:11px;color:var(--muted);text-align:center;padding:6px 20px 14px;background:var(--paper);margin:0;line-height:1.4}

/* ------- dialogs */
dialog{border:0;border-radius:16px;padding:0;max-width:min(92vw, 560px);background:var(--paper);
  box-shadow:0 12px 48px rgba(0,0,0,.18);color:var(--ink)}
dialog::backdrop{background:rgba(60,40,20,.32);backdrop-filter:blur(2px)}
dialog form, dialog{padding:20px 22px}
dialog h2{margin:0 0 8px;color:var(--accent);font-size:18px}
dialog h3{margin:14px 0 6px;font-size:11px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted)}
dialog p{margin:0 0 12px}
dialog label{display:block;font-size:12px;color:var(--muted);margin-bottom:8px}
dialog label input, dialog label textarea, dialog label select{display:block;width:100%;margin-top:3px;font-size:13.5px}
dialog .grid-2{display:grid;grid-template-columns:1fr 1fr;gap:10px}
dialog .toggle{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--ink);margin-bottom:8px;cursor:pointer}
dialog .toggle input{margin:0;width:16px;height:16px}
dialog .dialog-actions{display:flex;gap:8px;justify-content:flex-end;margin-top:14px}
.hint{font-size:12px;color:var(--muted)}

/* ------- toast */
#toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);
  background:#5c4a36;color:#fbf7f1;padding:10px 16px;border-radius:8px;font-size:13px;
  box-shadow:0 8px 24px rgba(0,0,0,.18);z-index:1000}