:root{--blue:#2563EB;--blue-d:#1d4ed8;--bg:#f8fafc;--text:#0f172a;--muted:#475569;--line:#dbeafe;--card:#fff;--success:#16a34a}
*{box-sizing:border-box}body{margin:0;font-family:Inter,Segoe UI,Roboto,Arial,sans-serif;color:var(--text);background:linear-gradient(145deg,#eff6ff 0%,#ffffff 56%,#f8fafc 100%)}
.wrap{width:min(860px,94%);margin:0 auto}.demo-page{padding:34px 0 56px}.demo-header h1{margin:.5rem 0;font-size:clamp(1.4rem,3.7vw,2rem)}.demo-header p{margin:0;color:var(--muted)}
.back-link{color:var(--blue);text-decoration:none;font-weight:700}.control-bar{margin-top:18px;display:flex;justify-content:space-between;gap:10px;align-items:center;flex-wrap:wrap}
.toggle{display:flex;gap:10px;align-items:center;background:#fff;border:1px solid #dbeafe;border-radius:12px;padding:10px 12px;color:#1e3a8a;font-weight:600}
.btn-primary,.btn-outline{border:0;border-radius:12px;padding:11px 16px;font-weight:700;cursor:pointer;transition:transform .2s ease,background .2s ease}.btn-primary{background:var(--blue);color:#fff}.btn-primary:hover{background:var(--blue-d);transform:scale(1.02)}
.btn-outline{background:#fff;border:1px solid #bfdbfe;color:#1e3a8a}.btn-outline:hover{transform:scale(1.02);background:#eff6ff}
.chat-wrap{margin-top:16px;background:#fff;border:1px solid #dbeafe;border-radius:16px;padding:14px;box-shadow:0 16px 28px rgba(15,23,42,.08)}
.chat-log{height:420px;overflow:auto;padding:8px 6px;display:flex;flex-direction:column;gap:10px;background:#f8fafc;border:1px solid #e2e8f0;border-radius:12px}
.msg{max-width:84%;padding:10px 12px;border-radius:12px;line-height:1.45;white-space:pre-line;animation:fadeIn .22s ease both}.msg.bot{align-self:flex-start;background:#eaf1ff;border:1px solid #bfdbfe}.msg.user{align-self:flex-end;background:#2563eb;color:#fff}
.quick-replies{display:flex;gap:8px;flex-wrap:wrap;margin:10px 0}.chip{border:1px solid #bfdbfe;background:#fff;color:#1e3a8a;border-radius:999px;padding:7px 10px;font-size:.9rem;cursor:pointer}.chip:hover{background:#eff6ff}
.chat-form{display:grid;grid-template-columns:1fr auto;gap:10px}.chat-form input{border:1px solid #cbd5e1;border-radius:12px;padding:11px 12px;font-size:1rem}.chat-form input:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(37,99,235,.14)}
.ticket{margin-top:4px;background:#f8fbff;border:1px solid #cfe2ff;border-radius:12px;padding:12px;animation:ticketIn .4s ease both}.ticket h3{margin:0 0 8px;color:#1e3a8a;font-size:1rem}.ticket pre{margin:0;padding:10px;background:#fff;border:1px solid #dbeafe;border-radius:10px;overflow:auto;font-size:.86rem}
.cta-note{color:var(--success);font-weight:700}
@keyframes fadeIn{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}
@keyframes ticketIn{from{opacity:0;transform:translateX(14px)}to{opacity:1;transform:translateX(0)}}
@media (max-width:640px){.chat-log{height:62vh}.chat-form{grid-template-columns:1fr}.btn-primary,.btn-outline{width:100%}.msg{max-width:92%}}