:root{--primary: #2563eb;--bg: #f4f6f9;--card: #ffffff;--border: #e5e8ec;--text: #1f2937;--muted: #6b7280}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--text)}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}.layout{display:flex;min-height:100vh}.sidebar{width:220px;background:#0f172a;color:#cbd5e1;padding:20px 0;position:sticky;top:0;height:100vh}.sidebar h1{color:#fff;font-size:18px;padding:0 20px 16px;margin:0;border-bottom:1px solid #1e293b}.sidebar nav{display:flex;flex-direction:column;margin-top:10px}.sidebar nav a{color:#cbd5e1;padding:11px 20px;font-size:14px}.sidebar nav a:hover{background:#1e293b;text-decoration:none}.sidebar nav a.active{background:var(--primary);color:#fff}.main{flex:1;padding:24px 28px;overflow-x:auto}.main h2{margin:0 0 18px;font-size:22px}.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:16px;margin-bottom:24px}.card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:18px}.card .num{font-size:30px;font-weight:700}.card .label{color:var(--muted);font-size:13px;margin-top:4px}.panel{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:18px;margin-bottom:20px}table{width:100%;border-collapse:collapse;background:var(--card);border:1px solid var(--border);border-radius:12px;overflow:hidden}th,td{text-align:left;padding:11px 14px;font-size:14px;border-bottom:1px solid var(--border)}th{background:#f8fafc;color:var(--muted);font-weight:600}tr:last-child td{border-bottom:none}tr:hover td{background:#fafbfc}.badge{display:inline-block;padding:2px 9px;border-radius:999px;font-size:12px;font-weight:600}.badge.active{background:#dbeafe;color:#1e40af}.badge.escalated{background:#fee2e2;color:#b91c1c}.badge.lead_captured{background:#dcfce7;color:#166534}.badge.awaiting_customer{background:#fef3c7;color:#92400e}.badge.closed{background:#e5e7eb;color:#374151}.badge.sent{background:#dcfce7;color:#166534}.badge.failed{background:#fee2e2;color:#b91c1c}.badge.pending{background:#fef3c7;color:#92400e}.badge.lead_generation{background:#dcfce7;color:#166534}.badge.error_escalation{background:#fee2e2;color:#b91c1c}button.btn{background:var(--primary);color:#fff;border:none;border-radius:8px;padding:9px 16px;font-size:14px;cursor:pointer;font-weight:600}button.btn:disabled{opacity:.55;cursor:default}button.btn.secondary{background:#fff;color:var(--text);border:1px solid var(--border)}input.search{border:1px solid var(--border);border-radius:8px;padding:9px 12px;font-size:14px;width:280px;max-width:100%}.msgs{display:flex;flex-direction:column;gap:10px}.msg{max-width:72%;padding:10px 13px;border-radius:12px;font-size:14px;white-space:pre-wrap;line-height:1.45}.msg.customer{background:#fff;border:1px solid var(--border);align-self:flex-start}.msg.ai{background:#dbeafe;align-self:flex-end}.msg.agent{background:#dcfce7;align-self:flex-end}.msg .who{font-size:11px;color:var(--muted);margin-bottom:3px}.muted{color:var(--muted);font-size:13px}.error{color:#b91c1c;font-size:14px}.row{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin-bottom:16px}.toolbar{display:flex;gap:8px}.toolbar select{border:1px solid var(--border);border-radius:8px;padding:9px 10px;font-size:14px}