:root{--bg: #0f172a;--panel: #1e293b;--panel2: #273449;--border: #334155;--text: #e2e8f0;--muted: #94a3b8;--accent: #38bdf8;--ok: #34d399;--bad: #f87171}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:Segoe UI,system-ui,sans-serif;font-size:14px}.layout{display:flex;min-height:100vh}.sidebar{width:220px;background:var(--panel);border-right:1px solid var(--border);padding:16px 10px;display:flex;flex-direction:column;gap:4px;position:sticky;top:0;height:100vh}.logo{font-size:18px;font-weight:700;color:var(--accent);padding:8px 12px 16px}.sidebar nav{display:flex;flex-direction:column;gap:2px;flex:1}.sidebar button{text-align:left;background:transparent;color:var(--text);border:none;padding:9px 12px;border-radius:8px;cursor:pointer;font-size:14px}.sidebar button:hover{background:var(--panel2)}.sidebar button.active{background:var(--accent);color:#0f172a;font-weight:600}.logout{color:var(--bad)}.content{flex:1;padding:24px 28px;max-width:1200px}h1{font-size:22px;margin:0 0 16px}h2{font-size:16px;margin:24px 0 10px;color:var(--muted);text-transform:uppercase;letter-spacing:.5px}.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:12px}.stat{background:var(--panel);border:1px solid var(--border);border-radius:10px;padding:14px 16px}.stat-label{color:var(--muted);font-size:12px;text-transform:uppercase}.stat-value{font-size:26px;font-weight:700;margin:4px 0}.stat-sub{color:var(--muted);font-size:12px}.device-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:12px}.device-card{background:var(--panel);border:1px solid var(--border);border-left:4px solid var(--bad);border-radius:10px;padding:14px 16px;cursor:pointer;line-height:1.6}.device-card.online{border-left-color:var(--ok)}.device-card:hover{background:var(--panel2)}.device-card-header{display:flex;align-items:center;gap:8px;font-size:16px}.dot{width:10px;height:10px;border-radius:50%;background:var(--bad)}.online .dot{background:var(--ok)}.muted{color:var(--muted)}.empty{color:var(--muted);padding:24px;text-align:center}.card{background:var(--panel);border:1px solid var(--border);border-radius:10px;padding:14px 16px;margin-bottom:16px;line-height:1.7}.timeline-row{display:flex;gap:10px;align-items:baseline;padding:5px 0;border-bottom:1px solid rgba(51,65,85,.4);flex-wrap:wrap}.chip{font-size:11px;border:1px solid currentColor;border-radius:4px;padding:1px 6px;text-transform:uppercase;letter-spacing:.4px}.table{width:100%;border-collapse:collapse;background:var(--panel);border-radius:10px;overflow:hidden}.table th,.table td{text-align:left;padding:9px 12px;border-bottom:1px solid var(--border)}.table th{background:var(--panel2);color:var(--muted);font-weight:600;text-transform:uppercase;font-size:12px}button{background:var(--panel2);color:var(--text);border:1px solid var(--border);border-radius:8px;padding:7px 14px;cursor:pointer;font-size:13px}button:hover{border-color:var(--accent)}button.danger{color:var(--bad)}button.link{background:transparent;border:none;color:var(--accent);padding:2px 4px}.btn{display:inline-block;text-decoration:none;background:var(--panel2);color:var(--text);border:1px solid var(--border);border-radius:8px;padding:7px 14px;margin-right:6px}.btn:hover{border-color:var(--accent)}input,select{background:var(--panel2);border:1px solid var(--border);color:var(--text);border-radius:8px;padding:7px 10px;font-size:13px;margin:4px 8px 4px 0}.filters{display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin-bottom:14px}.filters label{display:inline-flex;align-items:center;gap:6px;color:var(--muted)}.tabs{display:flex;gap:4px;flex-wrap:wrap;margin-bottom:16px}.tabs button{text-transform:capitalize}.tabs button.active{background:var(--accent);color:#0f172a;font-weight:600}.status{padding:2px 8px;border-radius:999px;font-size:12px}.status.ok{background:#34d39926;color:var(--ok)}.status.bad{background:#f8717126;color:var(--bad)}code{background:var(--panel2);padding:1px 5px;border-radius:4px;font-size:12px}pre{background:#0b1220;padding:12px;border-radius:8px;overflow-x:auto}details{padding:4px 0}.qr-box{text-align:center;margin-top:16px}.qr-box img{background:#fff;border-radius:10px;padding:6px}.login-screen{min-height:100vh;display:flex;align-items:center;justify-content:center}.login-card{background:var(--panel);border:1px solid var(--border);border-radius:14px;padding:32px;width:380px;text-align:center}.login-card h1{color:var(--accent)}.login-card input{width:100%;margin:8px 0}.login-card button{width:100%;margin-top:8px}.error{color:var(--bad);margin:8px 0}@media (max-width: 800px){.layout{flex-direction:column}.sidebar{width:100%;height:auto;position:static;flex-direction:row;flex-wrap:wrap;align-items:center}.sidebar nav{flex-direction:row;flex-wrap:wrap}.content{padding:16px}}