/* MyHub - Dashboard */

.chart-card {
  background: var(--surface);
  border: 1px solid var(--divider);
  border-radius: var(--radius-m);
  margin: 0 0 12px;
  overflow: hidden;
}
.chart-card__header {
  display: flex;
  align-items: center;
  padding: 8px 12px;
  border-bottom: 1px solid var(--divider);
}
.chart-card__title {
  font-weight: 700;
  font-size: var(--fs-m);
}
.chart-card__tools {
  margin-left: auto;
  display: flex;
  gap: 4px;
}
.chart-canvas-wrap {
  position: relative;
  height: 280px;
  padding: 12px;
}

.chart-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
@media (max-width: 1024px) {
  .chart-row { grid-template-columns: 1fr; }
}

/* Receiver-Group heatmap (treemap-ish grid) */
.rg-heatmap {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: 2px;
  padding: 12px;
}
@media (max-width: 1280px) {
  .rg-heatmap { grid-template-columns: repeat(6, 1fr); }
}
.rg-heatmap__cell {
  background: #6db5e8;
  color: #fff;
  height: 80px;
  padding: 8px 10px;
  font-size: var(--fs-s);
  font-weight: 600;
  border-radius: 2px;
  display: flex;
  align-items: flex-start;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  cursor: default;
}
.rg-heatmap__caption {
  text-align: center;
  font-size: var(--fs-s);
  color: var(--text-muted);
  padding-bottom: 12px;
}

/* Section collapse chevron */
.section__header span[id$="-chev"] {
  cursor: pointer;
  display: inline-flex;
  width: 16px;
  height: 16px;
  color: var(--text-muted);
}
.section.is-collapsed .section__body { display: none; }