/* ============================================================
   TREE-EXTRAS.CSS — the star, the per-item highlight colour, the
   optional row badges, and the colour picker.
   ============================================================ */

/* A favourited program had no marker anywhere in the tree — the only clue was
   on its card in the right-hand pane. */
.tree-node-star {
  width: 12px;
  height: 12px;
  flex-shrink: 0;
  margin-left: 0.3rem;
  color: var(--color-warning);
  fill: currentColor;
}

/* Per-item highlight colour: a bar down the left of the row. */
.tree-node.has-accent > .tree-node-row {
  position: relative;
}
.tree-node.has-accent > .tree-node-row::before {
  content: '';
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 3px;
  border-radius: 2px;
  background: var(--row-accent, transparent);
}
.tree-node.has-accent > .tree-node-row .tree-node-label { color: var(--row-accent, inherit); }

/* Optional badges, toggled from the pane menu. */
.tree-badge-level,
.tree-badge-tag {
  flex-shrink: 0;
  font-size: 0.5625rem;
  font-weight: 700;
  padding: 0.05rem 0.3rem;
  border-radius: 999px;
  white-space: nowrap;
}
.tree-badge-level { background: rgba(99, 102, 241, 0.18); color: var(--color-primary); }
.tree-badge-tag {
  background: rgba(6, 182, 212, 0.15);
  color: var(--color-accent);
  max-width: 5.5rem;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Colour picker */
.tree-color-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0.5rem;
  padding: 0.5rem 0;
}
.tree-color-swatch {
  width: 100%;
  aspect-ratio: 1;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  color: var(--text-tertiary);
  font-size: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.12s ease, border-color 0.12s ease;
}
.tree-color-swatch:hover { transform: scale(1.08); }
.tree-color-swatch.active { border-color: var(--text-primary); }

/* Back control at the head of a breadcrumb. Navigating out of a program detail
   meant aiming at the right crumb; from a deep path that is a small target. */
.browse-back-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.15rem;
  margin-right: 0.5rem;
  padding: 0.2rem 0.5rem;
  font-size: 0.72rem;
  flex-shrink: 0;
}