// Row grouping: the grouping bar with its chips, and the in-body group-header
// rows with their toggle, label, count badge, and per-column aggregates.

// ---- Grouping bar -----------------------------------------------------------
.apg-grouppanel {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 12px;
  background: var(--apg-panel-bg);
  border-bottom: var(--apg-border);
  overflow-x: auto;
  overflow-y: hidden;
  white-space: nowrap;
  scrollbar-width: thin;

  &::-webkit-scrollbar {
    height: 6px;
  }

  &::-webkit-scrollbar-thumb {
    background: var(--apg-scrollbar-thumb);
    border-radius: 3px;
  }

  &.apg-grouppanel-over {
    background: var(--apg-hover-bg);
    box-shadow: inset 0 0 0 2px var(--apg-active-border);
  }
}

.apg-grouppanel-icon {
  color: var(--apg-header-fg);
  opacity: 0.5;
}

.apg-group-placeholder {
  color: var(--apg-fg-muted);
  font-style: italic;
  font-size: 0.92em;
}

.apg-group-chips {
  display: flex;
  align-items: center;
  gap: 4px;
}

// Chevron between chips reads as a hierarchy: A › B › C
.apg-group-sep {
  width: 12px;
  height: 12px;
  color: var(--apg-header-fg);
  opacity: 0.4;
}

.apg-group-chip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  height: 26px;
  padding: 0 4px 0 6px;
  background: var(--apg-cell-bg);
  border: 1px solid var(--apg-border-color);
  border-radius: var(--apg-radius);
  color: var(--apg-cell-fg);
  cursor: grab;
  user-select: none;
  box-shadow: var(--apg-shadow-sm);
  transition:
    border-color 0.12s ease,
    box-shadow 0.12s ease;

  &:hover {
    border-color: var(--apg-active-border);
    box-shadow: var(--apg-shadow-md);
  }

  &:active {
    cursor: grabbing;
  }
}

.apg-group-chip-grip {
  width: 12px;
  height: 14px;
  color: var(--apg-header-fg);
  opacity: 0.4;
}

.apg-group-chip-label {
  font-weight: 500;
  font-size: 0.9em;
}

.apg-group-chip-sort {
  width: 12px;
  height: 12px;
  color: var(--apg-active-border);
}

.apg-group-chip-remove {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  padding: 0;
  border: none;
  border-radius: var(--apg-radius-sm);
  background: transparent;
  color: var(--apg-header-fg);
  opacity: 0.55;
  cursor: pointer;

  .apg-icon {
    width: 12px;
    height: 12px;
  }

  &:hover {
    background: var(--apg-control-hover);
    opacity: 1;
  }
}

.apg-group-chip-marker {
  width: 2px;
  height: 20px;
  align-self: center;
  border-radius: 1px;
  background: var(--apg-active-border);
}

// ---- In-body group-header rows ---------------------------------------------
.apg-group-row {
  background: var(--apg-group-bg);
  border-bottom: var(--apg-border);
  contain: none;

  &:hover {
    background: var(--apg-group-bg-hover);
  }
}

.apg-group-label {
  position: sticky;
  left: 0;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 100%;
  padding-right: 16px;
  background: inherit;
  white-space: nowrap;
}

.apg-group-toggle {
  width: 16px;
  height: 16px;
  color: var(--apg-header-fg);
  border-radius: var(--apg-radius-sm);
  cursor: pointer;
  transition: transform 0.15s ease;

  &:hover {
    background: var(--apg-control-hover);
    color: var(--apg-cell-fg);
  }

  &.apg-group-toggle-open {
    transform: rotate(90deg);
  }
}

.apg-group-inner {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
}

.apg-group-name {
  font-weight: 600;
  color: var(--apg-cell-fg);
}

.apg-group-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 20px;
  height: 18px;
  padding: 0 6px;
  border-radius: 9px;
  background: var(--apg-control-hover);
  color: var(--apg-header-fg);
  font-size: 0.78em;
  font-weight: 600;
}

.apg-group-agg {
  position: absolute;
  top: 0;
  height: 100%;
  display: flex;
  align-items: center;
  padding: var(--apg-cell-padding);
  font-weight: 600;
  color: var(--apg-cell-fg);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}