:root {
  --bg: #0f151c;
  --panel: #171f29;
  --panel-2: #1d2733;
  --border: #2a3644;
  --text: #dce6f0;
  --muted: #8aa0b4;
  --accent: #4da3ff;
  --ok: #35c46f;
  --warn: #f0b429;
  --crit: #ef5350;
  --offline: #6b7a89;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Segoe UI", "Microsoft YaHei", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
}

.topbar {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 10px 20px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}

.brand { display: flex; align-items: center; gap: 10px; }
.brand-mark {
  background: var(--accent);
  color: #08121d;
  font-weight: 700;
  border-radius: 6px;
  padding: 3px 8px;
  font-size: 13px;
}
.brand-name { font-weight: 600; font-size: 15px; }

.nav { display: flex; gap: 6px; flex: 1; }
.nav-btn {
  background: transparent;
  color: var(--muted);
  border: 1px solid transparent;
  padding: 6px 14px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 14px;
}
.nav-btn:hover { color: var(--text); }
.nav-btn.active {
  color: var(--text);
  background: var(--panel-2);
  border-color: var(--border);
}

.conn-badge { padding: 4px 12px; border-radius: 12px; font-size: 12px; }
.conn-ok { background: rgba(53, 196, 111, 0.15); color: var(--ok); }
.conn-fail { background: rgba(239, 83, 80, 0.15); color: var(--crit); }
.conn-unknown { background: rgba(107, 122, 137, 0.2); color: var(--muted); }

main { padding: 20px; max-width: 1280px; margin: 0 auto; }
.view.hidden { display: none; }

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
  margin-bottom: 16px;
}
.panel h3 {
  margin: 0 0 12px;
  font-size: 14px;
  color: var(--muted);
  font-weight: 600;
}

.device-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 14px;
}

.device-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 16px;
  cursor: pointer;
  transition: border-color 0.15s;
}
.device-card:hover { border-color: var(--accent); }

.device-title { display: flex; align-items: center; justify-content: space-between; margin-bottom: 10px; }
.device-name { font-weight: 600; font-size: 15px; }

.badge { padding: 2px 10px; border-radius: 10px; font-size: 12px; }
.badge-online { background: rgba(53, 196, 111, 0.15); color: var(--ok); }
.badge-offline { background: rgba(107, 122, 137, 0.2); color: var(--offline); }
.badge-alarm { background: rgba(239, 83, 80, 0.18); color: var(--crit); }
.badge-warn { background: rgba(240, 180, 41, 0.15); color: var(--warn); }

.meta-row { display: flex; justify-content: space-between; color: var(--muted); font-size: 12px; padding: 2px 0; }
.meta-row .v { color: var(--text); }

.device-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 10px 0 16px;
  font-size: 16px;
  font-weight: 600;
}

.detail-columns { display: grid; grid-template-columns: 1.2fr 1fr; gap: 16px; }
@media (max-width: 900px) { .detail-columns { grid-template-columns: 1fr; } }

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 6px 8px; border-bottom: 1px solid var(--border); font-size: 13px; white-space: nowrap; }
th { color: var(--muted); font-weight: 500; }
td.num { font-variant-numeric: tabular-nums; }

.ok-dot, .bad-dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; margin-right: 6px; }
.ok-dot { background: var(--ok); }
.bad-dot { background: var(--crit); }

.quarantined { color: var(--warn); }

.trend-controls { display: flex; gap: 8px; margin-bottom: 10px; }
.select {
  background: var(--panel-2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 5px 8px;
  font-size: 13px;
}
.trend-chart svg { width: 100%; height: 220px; }
.trend-meta { color: var(--muted); font-size: 12px; margin-top: 6px; }

.btn-link {
  background: transparent;
  border: none;
  color: var(--accent);
  cursor: pointer;
  font-size: 13px;
  padding: 0 0 8px;
}

.empty { color: var(--muted); padding: 12px 0; }
code, pre {
  font-family: Consolas, "Courier New", monospace;
  font-size: 12px;
}
pre {
  background: var(--panel-2);
  border-radius: 6px;
  padding: 8px;
  overflow-x: auto;
  max-width: 480px;
  margin: 0;
}