:root{--bg:#0b1220;--bg-chat:#0e1629;--card:#101828;--soft:#1b2437;--text:#e7edf5;--muted:#9fb0c3;--accent:#7dd3fc;--primary:#4A90E2;--ok:#22c55e;--border:#1f2a45;--user-bubble:#1e3a6e;--bot-bubble:#162033;--radius:14px;--shadow:0 2px 12px rgba(0,0,0,.25)}*{box-sizing:border-box;margin:0;padding:0}body,html{height:100%;background:var(--bg);color:var(--text);font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;-webkit-font-smoothing:antialiased}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}.chat-wrapper{display:flex;flex-direction:column;height:100vh;max-width:860px;margin:0 auto}.chat-header{justify-content:space-between;padding:14px 24px;background:rgba(11,18,32,.96);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);border-bottom:1px solid var(--border);flex-shrink:0}.brand-group,.chat-header{display:flex;align-items:center}.brand-group{gap:12px}.brand-group img{width:36px;height:36px;border-radius:10px;box-shadow:0 2px 8px rgba(74,144,226,.2)}.brand-group h1{font-size:16px;font-weight:700;letter-spacing:-.02em}.brand-group .subtitle{font-size:12px;color:var(--muted);font-weight:400}.header-actions{display:flex;gap:8px;align-items:center}.lang-btn{background:var(--soft);border:1px solid var(--border);color:var(--muted);padding:6px 12px;border-radius:8px;font-size:13px;font-weight:600;cursor:pointer;transition:all .2s}.lang-btn.active{border-color:var(--accent);background:rgba(125,211,252,.08)}.lang-btn.active,.lang-btn:hover{color:var(--accent)}.messages-area{flex:1 1;overflow-y:auto;padding:20px 20px 12px;display:flex;flex-direction:column;gap:16px;scroll-behavior:smooth}.messages-area::-webkit-scrollbar{width:6px}.messages-area::-webkit-scrollbar-track{background:transparent}.messages-area::-webkit-scrollbar-thumb{background:var(--border);border-radius:6px}.msg{display:flex;gap:10px;max-width:88%;animation:msgIn .3s ease}.msg.user{align-self:flex-end;flex-direction:row-reverse}.msg.bot{align-self:flex-start}@keyframes msgIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.msg-avatar{width:34px;height:34px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:15px;flex-shrink:0;font-weight:700}.msg.user .msg-avatar{background:var(--primary);color:#fff}.msg.bot .msg-avatar{background:var(--soft);color:var(--accent);border:1px solid var(--border)}.msg-bubble{padding:14px 18px;border-radius:var(--radius);line-height:1.65;font-size:14.5px;box-shadow:var(--shadow)}.msg.user .msg-bubble{background:var(--user-bubble);border-bottom-right-radius:4px;color:#dbeafe}.msg.bot .msg-bubble{background:var(--bot-bubble);border-bottom-left-radius:4px;border:1px solid var(--border)}.msg-bubble p{margin-bottom:8px}.msg-bubble p:last-child{margin-bottom:0}.msg-bubble ol,.msg-bubble ul{padding-left:20px;margin-bottom:8px}.msg-bubble li{margin-bottom:4px}.msg-bubble strong{color:var(--accent);font-weight:600}.msg-bubble code{background:rgba(125,211,252,.08);padding:2px 6px;border-radius:4px;font-size:13px}.msg-bubble a{color:var(--accent);text-decoration:underline}.msg-bubble a:hover{color:#bae6fd}.quick-replies{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}.quick-chip{background:rgba(74,144,226,.12);border:1px solid rgba(74,144,226,.3);color:var(--accent);padding:7px 14px;border-radius:20px;font-size:13px;font-weight:500;cursor:pointer;transition:all .2s}.quick-chip:hover{background:rgba(74,144,226,.25);transform:translateY(-1px)}.cta-box{margin-top:12px;background:linear-gradient(135deg,rgba(34,197,94,.12),rgba(16,185,129,.08));border:1px solid rgba(34,197,94,.3);border-radius:12px;padding:14px 16px;display:flex;align-items:center;gap:12px;flex-wrap:wrap}.cta-box p{font-size:13.5px;color:var(--text);flex:1 1;min-width:180px}.cta-link{display:inline-flex;align-items:center;gap:6px;background:#25D366;color:#fff;padding:8px 16px;border-radius:10px;font-weight:600;font-size:13px;white-space:nowrap;text-decoration:none;transition:all .2s}.cta-link:hover{background:#22bf5c;transform:translateY(-1px);text-decoration:none}.typing-dots{display:flex;gap:5px;padding:8px 0}.typing-dots span{width:8px;height:8px;background:var(--muted);border-radius:50%;animation:blink 1.4s infinite both}.typing-dots span:nth-child(2){animation-delay:.2s}.typing-dots span:nth-child(3){animation-delay:.4s}@keyframes blink{0%,80%,to{opacity:.3;transform:scale(.8)}40%{opacity:1;transform:scale(1)}}.input-bar{display:flex;gap:10px;padding:14px 20px 20px;background:var(--bg);border-top:1px solid var(--border);flex-shrink:0}.input-bar textarea{flex:1 1;background:var(--soft);border:1px solid var(--border);color:var(--text);border-radius:12px;padding:12px 16px;font-size:14.5px;font-family:inherit;resize:none;outline:none;transition:border-color .2s;min-height:46px;max-height:120px}.input-bar textarea::placeholder{color:var(--muted)}.input-bar textarea:focus{border-color:var(--primary)}.send-btn{width:46px;height:46px;border-radius:12px;border:none;background:var(--primary);color:#fff;font-size:20px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s;flex-shrink:0}.send-btn:hover{background:#3b7dd4;transform:scale(1.04)}.send-btn:disabled{opacity:.45;cursor:not-allowed;transform:none}.disclaimer{text-align:center;font-size:11px;color:var(--muted);padding:6px 20px 14px;line-height:1.5}.disclaimer a{color:var(--accent)}@media (max-width:600px){.chat-header{padding:10px 16px}.brand-group h1{font-size:14px}.messages-area{padding:14px 12px 8px}.msg{max-width:94%}.input-bar{padding:10px 12px 16px}}