/* ============================================================
 *  /devices/battery — v0.56 admin-uplift Tier 1.4
 *
 *  Per-device sub-cards stacked vertically inside the parent
 *  section card; each carries a header with name + pct, a
 *  Chart.js canvas, and a 4-tile stat grid (samples / drain rate
 *  / reaches 20% / reaches 0%).
 *
 *  v0.63.5 extracted from settings.css to its own file. No rules
 *  changed, no behaviour change — cascade order preserved because
 *  this file loads in the same slot the rules previously sat in.
 * ============================================================ */

.dx-battery-grid {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.dx-battery-card {
  background: var(--t-inset);
  border: 1px solid var(--t-inset-border);
  border-radius: 10px;
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.dx-battery-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}
.dx-battery-name {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}
.dx-battery-name h4 {
  margin: 0;
  font-size: 14px;
  font-weight: 700;
  color: var(--t-fg);
  letter-spacing: -0.005em;
}
.dx-battery-id {
  font-family: var(--t-font-mono);
  font-size: 11px;
  color: var(--t-muted);
  background: transparent;
  padding: 0;
}
.dx-battery-pct-block {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
}
.dx-battery-pct {
  display: inline-flex;
  align-items: baseline;
  gap: 2px;
  font-variant-numeric: tabular-nums;
  font-size: 22px;
  font-weight: 800;
  color: var(--t-fg);
  line-height: 1;
}
.dx-battery-pct-unit {
  font-size: 14px;
  font-weight: 600;
  color: var(--t-muted);
}
.dx-battery-card[data-tone="critical"] .dx-battery-pct { color: var(--t-pill-danger-fg); }
.dx-battery-card[data-tone="low"] .dx-battery-pct { color: var(--t-pill-warn-fg); }

.dx-battery-chart {
  position: relative;
  width: 100%;
  height: 180px;
}
.dx-battery-chart .battery-chart { display: block; width: 100% !important; height: 100% !important; }

.dx-battery-empty {
  margin: 0;
  padding: 24px 0;
  text-align: center;
  color: var(--t-muted);
  font-size: 12.5px;
}

.dx-battery-stats { gap: 8px; grid-template-columns: repeat(4, 1fr); }
@media (max-width: 720px) { .dx-battery-stats { grid-template-columns: repeat(2, 1fr); } }
.dx-battery-hint {
  margin: 0;
  font-size: 11.5px;
  color: var(--t-muted);
  text-align: center;
}