:root{--brand: #2563eb;--bg: #f3f4f6;--line: #e5e7eb;--text: #111827;--muted: #6b7280}*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--text);background:var(--bg)}button,input,textarea,select{font:inherit}button{cursor:pointer}.center{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:16px}.card{background:#fff;border-radius:14px;box-shadow:0 4px 24px #00000014;padding:24px;width:100%;max-width:380px}.card h1{margin:0 0 4px;font-size:22px}.card p{margin:0 0 16px;color:var(--muted);font-size:14px}label{display:block;font-size:13px;font-weight:600;margin:12px 0 4px}input[type=text],input[type=password],textarea,select{width:100%;border:1px solid #d1d5db;border-radius:8px;padding:9px 11px;background:#fff}textarea{resize:vertical;min-height:64px}.btn{border:0;background:var(--brand);color:#fff;border-radius:8px;padding:9px 16px;font-weight:600}.btn.ghost{background:#fff;color:var(--text);border:1px solid #d1d5db}.btn.danger{background:#fff;color:#b91c1c;border:1px solid #fecaca}.btn:disabled{opacity:.5;cursor:default}.error{color:#b91c1c;font-size:13px;margin-top:10px}.ok{color:#047857;font-size:13px;margin-inline-start:10px}.app{height:100vh;display:flex;flex-direction:column}.top{background:#fff;border-bottom:1px solid var(--line);padding:10px 16px;display:flex;align-items:center;gap:12px}.top h2{margin:0;font-size:16px;flex:1}.dot{width:9px;height:9px;border-radius:50%;background:#9ca3af;display:inline-block;margin-inline-end:6px}.dot.on{background:#10b981}.tabs{display:flex;gap:4px}.tab{border:0;background:none;padding:6px 12px;border-radius:8px;color:var(--muted);font-weight:600}.tab.active{background:#eff6ff;color:var(--brand)}.layout{flex:1;min-height:0;display:grid;grid-template-columns:320px 1fr}.list{background:#fff;border-left:1px solid var(--line);overflow-y:auto}.filter{padding:10px;border-bottom:1px solid var(--line)}.item{display:block;width:100%;text-align:left;border:0;border-bottom:1px solid var(--line);background:#fff;padding:12px 14px}.item.sel{background:#eff6ff}.item .row{display:flex;align-items:center;gap:8px}.item b{font-size:14px;flex:1}.item small{color:var(--muted)}.item .last{color:var(--muted);font-size:13px;margin-top:3px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.pill{font-size:11px;font-weight:700;padding:2px 8px;border-radius:10px}.pill.unread{background:var(--brand);color:#fff}.pill.urgent{background:#dc2626;color:#fff}.pill.wa{background:#dcfce7;color:#166534}.pill.human{background:#fef3c7;color:#92400e}.empty{padding:32px;text-align:center;color:var(--muted)}.chat{display:flex;flex-direction:column;min-width:0;min-height:0;background:var(--bg)}.chat-head{background:#fff;border-bottom:1px solid var(--line);padding:10px 14px;display:flex;align-items:center;gap:10px}.chat-head b{flex:1}.back{display:none}.msgs{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:6px}.msg{max-width:75%;padding:9px 12px;border-radius:14px;font-size:14px;line-height:1.4;white-space:pre-wrap;word-wrap:break-word;background:#fff;box-shadow:0 1px 2px #0000000f}.msg.visitor{align-self:flex-start}.msg.bot{align-self:flex-end;background:#e5e7eb}.msg.agent{align-self:flex-end;background:var(--brand);color:#fff}.meta{font-size:11px;color:var(--muted);margin:6px 4px 0}.meta.right{align-self:flex-end}.reply{display:flex;gap:8px;padding:10px;background:#fff;border-top:1px solid var(--line)}.reply input{flex:1}.settings{flex:1;overflow-y:auto;padding:16px}.panel{background:#fff;border-radius:12px;padding:18px;max-width:760px;margin:0 auto 16px}.panel h3{margin:0 0 6px}.faq-row{border:1px solid var(--line);border-radius:10px;padding:10px;margin-top:10px}code.snippet{display:block;background:#0f172a;color:#e2e8f0;padding:12px;border-radius:8px;overflow-x:auto;font-size:13px;white-space:pre}@media (max-width: 720px){.layout{grid-template-columns:1fr}.layout .chat,.layout.has-selection .list{display:none}.layout.has-selection .chat{display:flex}.back{display:inline-block}.msg{max-width:88%}}