:root{--bg:#0f1115;--panel:#161922;--panel-2:#1c2029;--border:#2a2f3a;--text:#e8eaed;--muted:#93a0b4;--accent:#4f8cff;--accent-2:#22c55e;--danger:#ef4444;--warn:#f59e0b;--radius:10px}*{box-sizing:border-box}body,html{height:100%}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;font-size:14px;line-height:1.5}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}button,input,select,textarea{font:inherit;color:inherit}.shell{display:flex;min-height:100vh}.sidebar{width:220px;flex-shrink:0;background:var(--panel);border-right:1px solid var(--border);padding:20px 12px;display:flex;flex-direction:column;gap:4px}.sidebar-brand{font-weight:700;font-size:15px;padding:0 8px 16px;color:var(--text)}.sidebar-brand small{font-weight:400;font-size:12px;margin-top:2px}.nav-link,.sidebar-brand small{display:block;color:var(--muted)}.nav-link{padding:9px 12px;border-radius:var(--radius);font-weight:500}.nav-link:hover{background:var(--panel-2);color:var(--text);text-decoration:none}.nav-link.active{background:var(--accent);color:white}.sidebar-footer{margin-top:auto;padding-top:12px;border-top:1px solid var(--border);font-size:12px;color:var(--muted)}.main{flex:1 1;padding:28px 32px;max-width:1200px;overflow-x:auto}.page-title{font-size:20px;font-weight:700;margin:0 0 4px}.page-subtitle{color:var(--muted);margin:0 0 24px}.card{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:18px 20px;margin-bottom:16px}.grid{display:grid;grid-gap:16px;gap:16px}.grid-2{grid-template-columns:repeat(2,1fr)}.grid-3{grid-template-columns:repeat(3,1fr)}.stat{display:flex;flex-direction:column;gap:4px}.stat .value{font-size:26px;font-weight:700}.stat .label{color:var(--muted);font-size:12px;text-transform:uppercase;letter-spacing:.04em}table{width:100%;border-collapse:collapse;font-size:13px}td,th{text-align:left;padding:8px 10px;border-bottom:1px solid var(--border)}th{color:var(--muted);font-weight:600;font-size:11px;text-transform:uppercase;letter-spacing:.03em}tr:last-child td{border-bottom:none}tr.clickable{cursor:pointer}tr.clickable:hover td{background:var(--panel-2)}.badge{display:inline-block;padding:2px 9px;border-radius:999px;font-size:11px;font-weight:600}.badge-bot{background:rgba(79,140,255,.15);color:var(--accent)}.badge-humano{background:rgba(245,158,11,.15);color:var(--warn)}.badge-cerrada{background:rgba(147,160,180,.15);color:var(--muted)}.badge-connected{background:rgba(34,197,94,.15);color:var(--accent-2)}.badge-disconnected{background:rgba(239,68,68,.15);color:var(--danger)}.badge-connecting{background:rgba(245,158,11,.15);color:var(--warn)}.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 14px;border-radius:var(--radius);border:1px solid var(--border);background:var(--panel-2);color:var(--text);cursor:pointer;font-weight:600;font-size:13px}.btn-primary,.btn:hover{border-color:var(--accent)}.btn-primary{background:var(--accent);color:white}.btn-primary:hover{filter:brightness(1.08)}.btn-danger{background:var(--danger);border-color:var(--danger);color:white}.btn-sm{padding:5px 10px;font-size:12px}input[type=email],input[type=number],input[type=password],input[type=text],input[type=url],select,textarea{width:100%;padding:9px 11px;border-radius:var(--radius);border:1px solid var(--border);background:var(--bg);color:var(--text)}textarea{resize:vertical}label{display:block;font-size:12px;font-weight:600;color:var(--muted);margin-bottom:5px;text-transform:uppercase;letter-spacing:.03em}.field{margin-bottom:16px}.hint{color:var(--muted);font-size:12px;margin-top:4px}.error-box{background:rgba(239,68,68,.1);border:1px solid rgba(239,68,68,.4);color:#fca5a5;padding:10px 14px;border-radius:var(--radius);margin-bottom:16px;font-size:13px}.empty{color:var(--muted);padding:24px;text-align:center}.login-shell{min-height:100vh;display:flex;align-items:center;justify-content:center}.login-card{width:340px}.chat{display:flex;height:calc(100vh - 120px);gap:16px}.chat-list{width:320px;flex-shrink:0;overflow-y:auto}.chat-list .card{padding:12px 14px;cursor:pointer}.chat-list .card.active{border-color:var(--accent)}.chat-detail,.chat-messages{flex:1 1;display:flex;flex-direction:column}.chat-messages{overflow-y:auto;gap:10px;padding:4px 4px 12px}.bubble{max-width:70%;padding:9px 13px;border-radius:12px;font-size:13px}.bubble.in{align-self:flex-start;background:var(--panel-2);border:1px solid var(--border)}.bubble.out{align-self:flex-end;background:var(--accent);color:white}.bubble .meta{font-size:10px;opacity:.7;margin-top:4px}