:root {
  --ink: #e8f3ff;
  --muted: #94a9c7;
  --line: rgba(38, 174, 255, .28);
  --panel: rgba(7, 14, 28, .94);
  --page: #020711;
  --brand: #00baff;
  --brand-dark: #0b4dff;
  --panel-soft: rgba(9, 23, 44, .82);
  --ok: #0f8f55;
  --warning: #b7791f;
  --critical: #c7362f;
  --unknown: #687386;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  min-height: 100vh;
  color: var(--ink);
  background:
    radial-gradient(circle at 18% 0%, rgba(0, 186, 255, .22), transparent 32%),
    radial-gradient(circle at 82% 18%, rgba(11, 77, 255, .18), transparent 34%),
    linear-gradient(135deg, #020711 0%, #05111f 46%, #020711 100%);
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.45;
}

/* ─── Topbar ─── */

.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 4px 24px rgba(0, 0, 0, .4);
}

.brand-strip {
  background: var(--panel);
  border-bottom: 1px solid var(--line);
}

.brand-strip-inner {
  max-width: 1320px;
  margin: 0 auto;
  padding: 12px 20px;
  display: grid;
  grid-template-columns: auto 1fr auto auto;
  gap: 18px;
  align-items: center;
}

.brand-logo {
  height: 64px;
  width: auto;
  border-radius: 6px;
  display: block;
}

.brand-info { min-width: 0; }

.brand-title {
  margin: 0;
  font-size: 22px;
  font-weight: 800;
  color: var(--ink);
}

.brand-subtitle {
  margin: 4px 0 0;
  color: rgba(232, 243, 255, .84);
  font-size: 13px;
  text-transform: uppercase;
}

.brand-contact {
  font-size: 12px;
  color: var(--muted);
  text-align: right;
  line-height: 1.6;
}

.brand-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.clock {
  font-size: 13px;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.btn-refresh {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel-soft);
  color: var(--ink);
  cursor: pointer;
  font-size: 13px;
  transition: border-color .2s;
}

.btn-refresh:hover { border-color: var(--brand); }

/* ─── Content ─── */

.content {
  max-width: 1320px;
  margin: 0 auto;
  padding: 20px;
}

/* ─── Summary cards ─── */

.summary-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-bottom: 16px;
}

.card {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
  background: var(--panel-soft);
}

.card-label {
  display: block;
  font-size: 12px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 4px;
}

.card-value {
  font-size: 28px;
  font-weight: 800;
}

.card-total .card-value { color: var(--ink); }
.card-ok .card-value { color: var(--ok); }
.card-warning .card-value { color: var(--warning); }
.card-critical .card-value { color: var(--critical); }

/* ─── Status bar ─── */

.status-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel-soft);
}

/* ─── Status pill ─── */

.status-pill {
  display: inline-flex;
  min-width: 86px;
  justify-content: center;
  border-radius: 999px;
  padding: 4px 10px;
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  white-space: nowrap;
}

.status-ok { background: var(--ok); }
.status-warning { background: var(--warning); }
.status-critical { background: var(--critical); }
.status-unknown { background: var(--unknown); }

/* ─── Device cards ─── */

#deviceCards {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.empty-state {
  text-align: center;
  color: var(--muted);
  padding: 48px 12px;
  font-size: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel-soft);
}

.device-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel-soft);
  overflow: hidden;
  animation: fadeIn .25s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ─── Card header ─── */

.dc-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 18px;
  background: rgba(0, 186, 255, .06);
  border-bottom: 1px solid var(--line);
}

.dc-title {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
}

.dc-device {
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
}

.dc-unit {
  font-size: 13px;
  color: var(--muted);
}

.dc-hostname {
  font-size: 12px;
  color: var(--muted);
  font-family: monospace;
}

.dc-status {
  flex-shrink: 0;
}

/* ─── Card meta bar ─── */

.dc-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  padding: 10px 18px;
  font-size: 12px;
  color: var(--muted);
  border-bottom: 1px solid var(--line);
  background: rgba(0, 0, 0, .12);
}

.dc-meta b {
  color: var(--ink);
  font-weight: 600;
}

.dc-issues {
  color: var(--warning);
}

.dc-issues b {
  color: var(--critical);
}

/* ─── Card body (sections) ─── */

.dc-body {
  padding: 16px 18px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.dc-section h4 {
  font-size: 12px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: .5px;
  margin-bottom: 6px;
}

/* ─── Mini tables ─── */

.mini-table {
  width: 100%;
  border-collapse: collapse;
  border: 1px solid var(--line);
  border-radius: 4px;
  overflow: hidden;
}

.mini-table th,
.mini-table td {
  padding: 6px 8px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  font-size: 12px;
}

.mini-table th {
  color: var(--muted);
  background: rgba(0, 186, 255, .06);
  font-size: 10px;
  text-transform: uppercase;
}

.mini-table tr:last-child td { border-bottom: 0; }

.mini-empty {
  padding: 8px;
  color: var(--muted);
  font-size: 12px;
}

/* ─── Responsivo ─── */

@media (max-width: 900px) {
  .summary-cards { grid-template-columns: repeat(2, 1fr); }
  .dc-body { grid-template-columns: 1fr; }
  .brand-strip-inner { grid-template-columns: auto 1fr; gap: 12px; }
  .brand-contact { text-align: left; }
  .brand-actions { justify-content: flex-start; }
}

@media (max-width: 600px) {
  .dc-header { flex-direction: column; align-items: flex-start; gap: 8px; }
  .dc-title { flex-direction: column; gap: 4px; }
  .dc-meta { flex-direction: column; gap: 6px; }
}