.curriculum {
  display: flex;
  flex-direction: column;
  gap: var(--block-space-double);
  position: relative;
}

/* The "path" line: a vertical rail running through the stage markers, so the
   list reads as a journey (roadmap feel) without any generated graphs. */
.curriculum::before {
  background-color: var(--color-subtle);
  content: "";
  inline-size: 2px;
  inset-block: 1.5rem 2.5rem;
  inset-inline-start: calc(1.25rem - 1px);
  position: absolute;
}

.curriculum__stage-row {
  display: flex;
  gap: var(--block-space);
  position: relative;
}

/* Numbered milestone on the rail — background-color: var(--color-bg) masks
   the rail line passing behind it. */
.curriculum__marker {
  align-items: center;
  background-color: var(--color-bg);
  border: 2px solid var(--color-subtle);
  border-radius: 50%;
  block-size: 2.5rem;
  color: var(--color-subtle-dark);
  display: inline-flex;
  flex-shrink: 0;
  font-size: 0.95rem;
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  inline-size: 2.5rem;
  justify-content: center;
  margin-block-start: var(--block-space-half);
  position: relative;

  .icon {
    block-size: 1.2rem;
    inline-size: 1.2rem;
  }
}

.curriculum__marker--done {
  border-color: oklch(var(--lch-green) / 0.55);
  color: var(--color-positive);
}

.curriculum__stage-row .curriculum__section {
  flex: 1;
  min-inline-size: 0;
}

.projects__empty {
  color: var(--color-subtle-dark);
  text-align: center;
}

.curriculum__section {
  background-color: var(--color-subtle-light);
  border: 1px solid var(--color-subtle);
  border-radius: 0.75em;
  overflow: hidden;
}

.curriculum__header {
  align-items: center;
  border-block-end: 1px solid var(--color-subtle);
  display: flex;
  gap: var(--block-space);
  justify-content: space-between;
  padding: var(--block-space) 1.5rem;
}

.curriculum__header-title {
  color: var(--color-ink);
  font-size: 0.95rem;
  font-weight: 600;
  margin-block: 0;
}

/* Rows separated by spacing (no dividers); inset padding so the hover
   highlight floats inside the card, Odin-style. */
.curriculum__list {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 0.75rem;
}

.curriculum__lesson {
  align-items: center;
  border-radius: 0.5em;
  color: var(--color-subtle-dark);
  display: flex;
  gap: 0.75rem;
  padding: 0.6rem 0.75rem;
  text-decoration: none;
  transition: background-color 150ms ease;

  .icon {
    flex-shrink: 0;
    block-size: 1.25rem;
    inline-size: 1.25rem;
  }

  /* Hover: a rounded, inset highlight only — text and icon keep their color */
  @media (any-hover: hover) {
    &:hover {
      background-color: var(--color-subtle);
    }
  }
}

/* Practice lessons read as the section's goal — marked with the accent icon */
.curriculum__lesson--practice {
  color: var(--color-marker);
}

/* Completed: green check, title dims — it's behind the reader. */
.curriculum__lesson--done {
  color: var(--color-positive);

  .curriculum__lesson-title {
    color: var(--color-subtle-dark);
  }
}

.curriculum__lesson-title {
  color: var(--color-ink);
  font-size: 0.95rem;
}