:root{
  --bg:#0d1117;
  --panel:#121826;
  --card:#0f172a;
  --text:#e5e7eb;
  --muted:#94a3b8;
  --primary:#22c55e;
  --accent:#38bdf8;
  --danger:#ef4444;
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: "Segoe UI", Tahoma, Arial, "Noto Naskh Arabic", "Amiri", sans-serif;
  background:var(--bg);
  color:var(--text);
}
.topbar{
  display:flex;justify-content:space-between;align-items:center;
  padding:16px 20px;background:var(--panel);border-bottom:1px solid #1f2937;
}
.brand{display:flex;align-items:center;gap:8px}
.brand .logo{font-size:22px}
.brand .title{font-size:18px;font-weight:600}
.status{display:flex;align-items:center;gap:8px;color:var(--muted)}
.status .dot{width:10px;height:10px;border-radius:50%}
.status .dot.on{background:var(--primary)}
.status .dot.off{background:var(--danger)}
.container{max-width:1100px;margin:24px auto;padding:0 16px}
.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
@media (max-width:1000px){.cards{grid-template-columns:repeat(2,1fr)}}
@media (max-width:560px){.cards{grid-template-columns:1fr}}
.card{
  background:var(--card);
  border:1px solid #1f2937;border-radius:12px;padding:14px;
}
.card-head{display:flex;align-items:center;gap:10px;margin-bottom:8px}
.card .icon{width:30px;height:30px;fill:var(--accent)}
.card.ammonia .icon{fill:#ef4444}
.card.lux .icon{fill:#f59e0b}
.card.humidity .icon{fill:#3b82f6}
.card.temp .icon{fill:#fb923c}
.label{font-size:14px;font-weight:600}
.sub{font-size:12px;color:var(--muted)}
.card-value{display:flex;align-items:baseline;gap:8px;margin-top:8px}
.num{font-size:34px;font-weight:700;letter-spacing:.5px}
.unit{font-size:14px;color:var(--muted)}
.toolbar{margin-top:24px;background:var(--panel);border:1px solid #1f2937;border-radius:12px;padding:12px}
.filters{display:flex;flex-wrap:wrap;gap:10px;align-items:flex-end}
.field{display:flex;flex-direction:column;gap:6px}
.field input{
  background:#0b1220;color:var(--text);border:1px solid #1f2937;border-radius:8px;padding:8px 10px;
}
.btn{
  background:var(--accent);color:#041326;border:none;border-radius:8px;padding:10px 12px;cursor:pointer;font-weight:600
}
.btn.outline{
  background:transparent;color:var(--accent);border:1px solid var(--accent)
}
.table-sec{margin-top:18px}
.table-sec h2{margin:0 0 4px 0;font-size:18px}
.hint{color:var(--muted);margin:0 0 10px 0;font-size:12px}
.table-wrap{overflow:auto;border:1px solid #1f2937;border-radius:12px}
table{width:100%;border-collapse:collapse;min-width:680px}
thead th{
  background:#0b1220;color:var(--muted);font-weight:600;text-align:center;padding:10px;border-bottom:1px solid #1f2937
}
tbody td{
  padding:10px;text-align:center;border-bottom:1px solid #1f2937
}
tbody tr:nth-child(odd){background:#0e1422}
.footer{
  margin:24px auto;max-width:1100px;color:var(--muted);font-size:12px;text-align:center
}