:root{
  --bg:#050816;
  --panel:#0b1324;
  --panel-2:#0f1a31;
  --line:rgba(148,163,184,.18);
  --text:#e5eefc;
  --muted:#8ea2c9;
  --good:#10b981;
  --warn:#f59e0b;
  --bad:#ef4444;
  --brand:#7c3aed;
  --brand-2:#0ea5e9;
  --chip:#18253f;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:radial-gradient(circle at top left,#13213d 0,#081120 45%,#050816 100%);color:var(--text);font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",Tahoma,Arial,sans-serif}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit}
code{background:rgba(255,255,255,.08);padding:2px 6px;border-radius:8px}
.app-shell{display:grid;grid-template-columns:320px 1fr;min-height:100vh}
.sidebar{position:sticky;top:0;height:100vh;overflow:auto;padding:22px;background:linear-gradient(180deg,rgba(10,16,30,.96),rgba(7,12,22,.98));border-left:1px solid var(--line);box-shadow:-10px 0 30px rgba(0,0,0,.18)}
.main-panel{padding:22px}
.brand{display:flex;align-items:center;gap:14px;margin-bottom:18px}
.brand-icon{width:54px;height:54px;border-radius:18px;display:grid;place-items:center;font-weight:900;background:linear-gradient(135deg,var(--brand),var(--brand-2));box-shadow:0 12px 30px rgba(124,58,237,.35)}
.brand-title{font-size:18px;font-weight:800}
.brand-sub{font-size:13px;color:var(--muted)}
.side-actions{display:grid;gap:10px;margin-bottom:18px}
.sidebar-section{margin-top:18px}
.section-title{font-size:13px;color:#cbd5e1;text-transform:uppercase;letter-spacing:.06em;margin-bottom:10px}
.sidebar-list,.notice-list{display:grid;gap:10px}
.sidebar-item{display:grid;grid-template-columns:14px 1fr auto;gap:10px;align-items:center;padding:12px 12px;border-radius:16px;border:1px solid var(--line);background:rgba(255,255,255,.03)}
.sidebar-item:hover{background:rgba(255,255,255,.05)}
.sidebar-dot{width:10px;height:10px;border-radius:999px;background:#64748b}
.sidebar-item.connected .sidebar-dot{background:var(--good)}
.sidebar-item.qr .sidebar-dot,.sidebar-item.initializing .sidebar-dot{background:var(--warn)}
.sidebar-item.error .sidebar-dot,.sidebar-item.disconnected .sidebar-dot{background:var(--bad)}
.sidebar-name{font-weight:700}
.sidebar-status{font-size:12px;color:var(--muted)}
.notice{padding:12px;border-radius:16px;border:1px solid var(--line);background:rgba(255,255,255,.03)}
.notice .line1{display:flex;justify-content:space-between;gap:12px}
.notice .txt{margin-top:8px;color:#dbeafe;font-size:13px}
.notice.success{border-color:rgba(16,185,129,.28)}
.notice.warning{border-color:rgba(245,158,11,.28)}
.notice.error{border-color:rgba(239,68,68,.28)}
.hero,.panel{background:linear-gradient(180deg,rgba(15,23,42,.94),rgba(11,18,31,.95));border:1px solid var(--line);border-radius:26px;padding:22px;box-shadow:0 16px 45px rgba(0,0,0,.2)}
.hero h1,.panel h2,.panel h3{margin:0 0 8px}
.hero p,.panel p{margin:0;color:var(--muted)}
.hero-head,.row-between{display:flex;justify-content:space-between;gap:16px;align-items:center;flex-wrap:wrap}
.hero-actions{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.kpi-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin-top:16px}
.kpi{padding:16px;border-radius:18px;background:linear-gradient(180deg,rgba(24,37,63,.95),rgba(13,21,37,.95));border:1px solid var(--line)}
.kpi span{display:block;color:var(--muted);font-size:12px}
.kpi strong{display:block;margin-top:6px;font-size:24px}
.content-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:16px}
.cards-area{margin-top:16px}
.session-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.session-card{padding:16px;border-radius:20px;border:1px solid var(--line);background:linear-gradient(180deg,rgba(24,37,63,.92),rgba(10,16,29,.95));position:relative;overflow:hidden}
.session-card:hover{transform:translateY(-1px);transition:.15s}
.session-card:after{content:'';position:absolute;inset:auto -65px -65px auto;width:180px;height:180px;border-radius:50%;background:radial-gradient(circle,rgba(124,58,237,.17) 0,rgba(14,165,233,.05) 55%,transparent 70%)}
.card-top{display:flex;justify-content:space-between;gap:12px;align-items:flex-start}
.session-name{font-size:18px;font-weight:800}
.session-sub{margin-top:5px;color:var(--muted);font-size:13px}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin-top:14px}
.mini-stat{padding:10px;border-radius:14px;background:rgba(255,255,255,.04);border:1px solid var(--line)}
.mini-stat span{display:block;color:var(--muted);font-size:12px}
.mini-stat strong{display:block;margin-top:4px;font-size:14px}
.session-footer{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}
.pill,.badge{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:rgba(255,255,255,.06);border:1px solid var(--line);font-size:13px}
.badge.mini{padding:4px 8px;font-size:11px}
.dot{width:10px;height:10px;border-radius:999px}
.badge.connected .dot,.sidebar-item.connected .sidebar-dot{background:var(--good)}
.badge.qr .dot,.badge.initializing .dot,.sidebar-item.qr .sidebar-dot,.sidebar-item.initializing .sidebar-dot{background:var(--warn)}
.badge.error .dot,.badge.disconnected .dot,.sidebar-item.error .sidebar-dot,.sidebar-item.disconnected .sidebar-dot{background:var(--bad)}
.badge.idle .dot{background:#64748b}
.badge.authenticated .dot{background:#38bdf8}
.btn{border:0;border-radius:16px;padding:12px 16px;font-weight:700;cursor:pointer;background:var(--chip);color:var(--text)}
.btn:hover{opacity:.95}
.btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand-2))}
.btn-good{background:linear-gradient(135deg,#059669,#10b981)}
.btn-warn{background:linear-gradient(135deg,#f59e0b,#f97316)}
.btn-bad{background:linear-gradient(135deg,#ef4444,#dc2626)}
.btn-ghost{background:transparent;border:1px solid var(--line)}
.input,.textarea{width:100%;background:rgba(8,13,24,.92);border:1px solid var(--line);color:var(--text);border-radius:16px;padding:13px 14px;outline:none}
.textarea{resize:vertical;min-height:120px}
.input:focus,.textarea:focus{border-color:rgba(124,58,237,.7);box-shadow:0 0 0 4px rgba(124,58,237,.12)}
.inline-form{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin-top:10px}
.field{display:grid;gap:7px}
.field.full{grid-column:1/-1}
.field label{font-size:13px;color:var(--muted)}
.feature-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:12px}
.feature{padding:14px;border-radius:18px;background:rgba(255,255,255,.04);border:1px solid var(--line)}
.feature strong{display:block;margin-bottom:5px}
.feature span{color:var(--muted);font-size:13px}
.info-box{display:grid;gap:10px}
.info-row{display:flex;justify-content:space-between;gap:12px;align-items:center;padding:12px 14px;border-radius:16px;background:rgba(255,255,255,.04);border:1px solid var(--line)}
.api-list{display:grid;gap:8px;margin-top:14px}
.api-row{display:grid;grid-template-columns:1.1fr .9fr;gap:12px;align-items:center;padding:10px 12px;border-radius:16px;background:rgba(255,255,255,.03);border:1px solid var(--line)}
.qr-box{min-height:330px;display:grid;place-items:center;background:rgba(255,255,255,.03);border:1px dashed rgba(148,163,184,.28);border-radius:22px;padding:16px}
.qr-box img{max-width:320px;width:100%;border-radius:16px;background:#fff;padding:10px}
.table-wrap{overflow:auto;border-radius:18px;border:1px solid var(--line)}
.data-table{width:100%;border-collapse:collapse}
.data-table th,.data-table td{padding:12px 10px;border-bottom:1px solid var(--line);text-align:right;vertical-align:top;font-size:13px}
.data-table th{background:rgba(255,255,255,.03);color:#cbd5e1}
.data-table tr:hover td{background:rgba(255,255,255,.02)}
.empty-cell,.empty-box{padding:16px;text-align:center;color:var(--muted)}
.small{font-size:13px}
.muted{color:var(--muted)}
.modal-backdrop{position:fixed;inset:0;background:rgba(2,6,23,.75);display:none;align-items:center;justify-content:center;padding:20px;z-index:100}
.modal-backdrop.open{display:flex}
.modal{width:min(760px,100%);background:linear-gradient(180deg,rgba(15,23,42,.98),rgba(9,15,27,.98));border:1px solid var(--line);border-radius:26px;padding:18px;box-shadow:0 18px 50px rgba(0,0,0,.35)}
.modal-head,.modal-actions{display:flex;justify-content:space-between;align-items:center;gap:12px}
.modal-body{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin:14px 0}
.icon-btn{width:38px;height:38px;border-radius:12px;border:1px solid var(--line);background:transparent;color:var(--text);font-size:22px;cursor:pointer}
@media (max-width: 1100px){
  .app-shell{grid-template-columns:1fr}
  .sidebar{position:relative;height:auto}
  .content-grid,.session-grid,.kpi-grid,.inline-form,.feature-grid,.modal-body{grid-template-columns:1fr}
}