:root{
  --bg:#0f1724;
  --card:#0b1220;
  --muted:#9aa3b2;
  --accent:#6ee7b7;
  --glass: rgba(255,255,255,0.03);
  --radius:14px;
  --text:#e6eef6;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:"Inter",system-ui,-apple-system,Segoe UI,Roboto,"Helvetica Neue",Arial;
  background: linear-gradient(180deg,#071025 0%, #071833 100%);
  color:var(--text);
  display:flex;
  align-items:center;
  justify-content:center;
  padding:28px;
}

.card{
  width:100%;
  max-width:920px;
  background: linear-gradient(180deg,var(--card), rgba(10,16,26,0.85));
  border-radius:var(--radius);
  padding:28px;
  box-shadow: 0 8px 30px rgba(2,6,23,0.7);
  backdrop-filter: blur(8px);
}

.card-header{
  display:flex;
  gap:16px;
  align-items:center;
  margin-bottom:20px;
}

.card-header .logo{
  width:56px;
  height:56px;
  display:grid;
  place-items:center;
  background:var(--glass);
  border-radius:12px;
  color:var(--accent);
  font-weight:700;
}

.card-header h1{margin:0;font-size:20px}
.muted{color:var(--muted);font-size:13px;margin-top:4px}

.status-grid{
  display:grid;
  grid-template-columns: repeat(2, minmax(0,1fr));
  gap:14px;
  margin-bottom:18px;
}

.status-item{
  background: rgba(255,255,255,0.02);
  padding:14px;
  border-radius:12px;
  display:flex;
  flex-direction:column;
}

.status-item .label{color:var(--muted);font-size:12px;margin-bottom:8px}
.status-item .value{font-size:18px;font-weight:600}

#socketState.connected{color:var(--accent)}
#socketState.disconnected{color:#ff6b6b}

.controls{display:flex;gap:12px;align-items:center;margin-top:6px}
.btn{
  background:linear-gradient(90deg,#0ea5a9,#6ee7b7);
  border:none;
  color:#06111a;
  padding:10px 14px;
  border-radius:10px;
  font-weight:600;
  cursor:pointer;
  box-shadow: 0 6px 18px rgba(46,229,198,0.08);
}
.btn:active{transform:translateY(1px)}

.footer{margin-top:18px;font-size:13px}
@media (max-width:640px){
  .status-grid{grid-template-columns:1fr}
}