/* Curriculum builder — the profession tree (courses → stage → lessons) with
   drag-and-drop reordering. Driven by curriculum_controller.js. */

.builder-cards {
  display: grid;
  gap: 0.75rem;
  grid-template-columns: repeat(auto-fill, minmax(18rem, 1fr));
}

.builder-card {
  border: 1px solid var(--color-subtle);
  border-radius: 0.75em;
  color: var(--color-ink);
  display: flex;
  flex-direction: column;
  gap: var(--block-space-half);
  padding: var(--block-space) 1.1rem;
  text-decoration: none;
  transition: border-color 200ms ease, background-color 200ms ease;

  @media (any-hover: hover) {
    &:hover {
      background-color: var(--color-subtle-light);
      border-color: var(--color-subtle-dark);
    }
  }
}

.builder-card__head {
  align-items: center;
  display: flex;
  gap: var(--block-space-half);
  justify-content: space-between;
}

.builder-card__title {
  font-size: 1.05rem;
  font-weight: 600;
}

.builder-card__meta {
  color: var(--color-subtle-dark);
  font-size: 0.8rem;
}

/* Destructive actions on the edit/settings pages, kept off the tree so the builder stays for reorganizing. */
.admin-danger {
  border-block-start: 1px solid var(--color-subtle);
  margin-block-start: var(--block-space-double);
  padding-block-start: 1.25rem;
}

.admin-danger__title {
  color: var(--color-subtle-dark);
  font-size: 0.9rem;
  font-weight: 600;
  margin-block: 0 0.75rem;
}

.builder__hint {
  margin-block-end: var(--block-space);
}

.builder__courses {
  display: flex;
  flex-direction: column;
  gap: var(--block-space-half);
  list-style: none;
  margin: 0;
  padding: 0;
}

.builder-course {
  border: 1px solid var(--color-subtle);
  border-radius: 0.6em;
  overflow: hidden;
}

.builder-course.is-dragging,
.builder-lesson.is-dragging {
  opacity: 0.4;
}

.builder-course__head {
  align-items: center;
  background-color: var(--color-subtle-light);
  display: flex;
  gap: 0.6rem;
  padding: 0.6rem 0.75rem;
}

.builder-course__title {
  color: var(--color-ink);
  font-size: 1rem;
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.builder-course__meta {
  color: var(--color-subtle-dark);
  font-size: 0.75rem;
  margin-inline-start: auto;
  white-space: nowrap;
}

.builder-course__actions {
  align-items: center;
  display: flex;
  flex-shrink: 0;
  gap: var(--block-space-half);
}

.builder-course__toggle {
  background: none;
  border: 0;
  color: var(--color-subtle-dark);
  cursor: pointer;
  display: inline-flex;
  padding: 0;

  .icon {
    block-size: 1.1rem;
    inline-size: 1.1rem;
    transition: transform 200ms ease;
  }

  @media (any-hover: hover) {
    &:hover { color: var(--color-ink); }
  }
}

.builder-course.is-collapsed .builder-course__toggle .icon {
  transform: rotate(-90deg);
}

.builder-course.is-collapsed .builder-course__lessons {
  display: none;
}

.builder-course__lessons {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  list-style: none;
  margin: 0;
  padding: 0.4rem 0.5rem 0.6rem;
}

.builder-course__empty {
  color: var(--color-subtle-dark);
  font-size: 0.85rem;
  padding: 0.4rem 0.75rem;
}

.builder-stage {
  align-items: center;
  color: var(--color-subtle-dark);
  display: flex;
  font-size: 0.72rem;
  font-weight: 600;
  gap: var(--block-space-half);
  letter-spacing: 0.03em;
  margin-block: var(--block-space-half) 0.2rem;
  padding-inline: 0.75rem;
  text-transform: uppercase;
}

.builder-stage.is-dragging {
  opacity: 0.4;
}

.builder__handle--stage .icon {
  block-size: 0.95rem;
  inline-size: 0.95rem;
}

.builder-lesson {
  align-items: center;
  border-radius: 0.4em;
  display: flex;
  gap: 0.6rem;
  padding: 0.4rem 0.6rem;
  transition: background-color 200ms ease;

  @media (any-hover: hover) {
    &:hover { background-color: var(--color-subtle-light); }
  }
}

.builder-lesson__pos {
  color: var(--color-subtle-dark);
  flex-shrink: 0;
  font-size: 0.72rem;
  inline-size: 1.5rem;
  text-align: end;
}

.builder-lesson__title {
  color: var(--color-ink);
  flex: 1;
  font-size: 0.92rem;
  min-inline-size: 0;
}

/* Inline rename (double-click a title) — display swaps to a compact input. */
.builder-inline__display {
  cursor: text;
  display: inline-block;
  max-inline-size: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  vertical-align: bottom;
  white-space: nowrap;
}

.builder-inline__display.is-error {
  color: var(--color-negative);
}

.builder-inline__form {
  display: inline-flex;
  inline-size: 100%;
}

.builder-inline__input {
  font-size: 0.92rem;
  inline-size: 100%;
  min-inline-size: 10rem;
  padding: 0.15rem 0.4rem;
}

.builder__handle {
  color: var(--color-subtle-dark);
  cursor: grab;
  display: inline-flex;
  flex-shrink: 0;

  .icon {
    block-size: 1.1rem;
    inline-size: 1.1rem;
  }
}

.builder-course.is-dragging .builder__handle,
.builder-lesson.is-dragging .builder__handle {
  cursor: grabbing;
}

.builder__edit {
  color: var(--color-subtle-dark);
  display: inline-flex;
  flex-shrink: 0;
  margin-inline-start: auto;
  transition: color 200ms ease;

  .icon {
    block-size: 1rem;
    inline-size: 1rem;
  }

  @media (any-hover: hover) {
    &:hover { color: var(--color-ink); }
  }
}

.builder-course__actions .builder__edit {
  margin-inline-start: 0;
}

.builder__add {
  align-items: center;
  border: 1px dashed var(--color-subtle);
  border-radius: 0.6em;
  color: var(--color-subtle-dark);
  display: flex;
  gap: 0.4rem;
  justify-content: center;
  margin-block-start: var(--block-space-half);
  padding: 0.6rem;
  text-decoration: none;
  transition: border-color 200ms ease, color 200ms ease;

  .icon {
    block-size: 1rem;
    inline-size: 1rem;
  }

  @media (any-hover: hover) {
    &:hover {
      border-color: var(--color-subtle-dark);
      color: var(--color-ink);
    }
  }
}