/* ============================================================
   Dashboard Theme — light/dark via [data-theme]
   ============================================================ */
:root {
  --bg: #f4f6fb;
  --panel: #ffffff;
  --panel-2: #f8fafc;
  --text: #1e293b;
  --muted: #64748b;
  --border: #e2e8f0;
  --accent: #2563eb;
  --ok: #16a34a;
  --warn: #dc2626;
  --shadow: 0 1px 3px rgba(15,23,42,.08), 0 8px 24px rgba(15,23,42,.05);
  --grid: rgba(100,116,139,.15);
}
[data-theme="dark"] {
  --bg: #0b1220;
  --panel: #131c2e;
  --panel-2: #0f1726;
  --text: #e8eefb;
  --muted: #93a4c0;
  --border: #243049;
  --accent: #3b82f6;
  --ok: #22c55e;
  --warn: #f87171;
  --shadow: 0 1px 3px rgba(0,0,0,.4), 0 12px 32px rgba(0,0,0,.35);
  --grid: rgba(147,164,192,.18);
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  transition: background .25s, color .25s;
}

.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 28px; background: var(--panel);
  border-bottom: 1px solid var(--border); box-shadow: var(--shadow);
  position: sticky; top: 0; z-index: 50;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand .logo {
  width: 40px; height: 40px; border-radius: 11px;
  background: linear-gradient(135deg, var(--accent), #06b6d4);
  display: grid; place-items: center; color: #fff; font-size: 20px;
}
.brand h1 { font-size: 1.05rem; margin: 0; letter-spacing: .2px; }
.brand small { color: var(--muted); font-size: .76rem; }

.controls { display: flex; align-items: center; gap: 10px; }
.status-pill {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 7px 14px; border-radius: 999px; font-size: .82rem; font-weight: 600;
  background: var(--panel-2); border: 1px solid var(--border);
}
.dot { width: 9px; height: 9px; border-radius: 50%; background: var(--muted); }
.dot.online { background: var(--ok); box-shadow: 0 0 0 4px rgba(34,197,94,.18); }
.dot.offline { background: var(--warn); box-shadow: 0 0 0 4px rgba(248,113,113,.18); }

.btn {
  border: 1px solid var(--border); background: var(--panel-2); color: var(--text);
  padding: 8px 14px; border-radius: 10px; cursor: pointer; font-size: .85rem;
  display: inline-flex; align-items: center; gap: 7px; transition: .15s;
}
.btn:hover { border-color: var(--accent); color: var(--accent); }

.wrap { max-width: 1320px; margin: 0 auto; padding: 24px 28px 48px; }

.cards {
  display: grid; gap: 16px; margin-bottom: 22px;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
}
.card {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: 16px; padding: 18px 20px; box-shadow: var(--shadow);
  position: relative; overflow: hidden;
}
.card .ico {
  width: 38px; height: 38px; border-radius: 10px; display: grid; place-items: center;
  font-size: 18px; margin-bottom: 12px;
}
.card .label { color: var(--muted); font-size: .78rem; font-weight: 600; text-transform: uppercase; letter-spacing: .5px; }
.card .value { font-size: 1.85rem; font-weight: 700; margin-top: 4px; line-height: 1.1; }
.card .unit { font-size: .9rem; color: var(--muted); font-weight: 500; margin-left: 4px; }
.card.alert { border-color: var(--warn); }
.card.alert::after {
  content: "⚠ ALERT"; position: absolute; top: 12px; right: 14px;
  font-size: .68rem; font-weight: 700; color: var(--warn);
}

.grid-2 { display: grid; gap: 18px; grid-template-columns: repeat(2, 1fr); margin-bottom: 22px; }
@media (max-width: 900px){ .grid-2 { grid-template-columns: 1fr; } }
.panel {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: 16px; padding: 18px 20px; box-shadow: var(--shadow);
}
.panel h3 { margin: 0 0 14px; font-size: .95rem; }
.chart-box { height: 240px; }

table { width: 100%; border-collapse: collapse; font-size: .85rem; }
th, td { padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-size: .74rem; text-transform: uppercase; letter-spacing: .5px; }
tbody tr:hover { background: var(--panel-2); }
.row-alert td { color: var(--warn); font-weight: 600; }
.table-scroll { max-height: 360px; overflow-y: auto; }

.meta { color: var(--muted); font-size: .8rem; margin-top: 4px; }