/* ============================================================
   PAPYROS — /lineage/[slug]: Full Idea Lineage
   ============================================================ */

.lineage-full {
  max-width: var(--page);
  margin: 0 auto;
  padding: clamp(2rem, 6vw, 4rem) var(--gutter) clamp(4rem, 10vh, 7rem);
}

.lineage-full__head {
  margin-bottom: clamp(2.5rem, 6vh, 4rem);
  max-width: 52ch;
}
.lineage-full__back {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--accent);
  display: inline-block;
  margin-bottom: 1.25rem;
}
.lineage-full__back:hover { text-decoration: underline; }

.lineage-full__body {
  display: flex;
  flex-direction: column;
  gap: 0;
  position: relative;
}

/* Vertical thread line */
.lineage-full__body::before {
  content: "";
  position: absolute;
  left: 7.75rem;
  top: 0;
  bottom: 0;
  width: 1px;
  background: var(--line);
  pointer-events: none;
}

/* Tier headers */
.lineage-full__tier { margin-bottom: 0; }
.lineage-full__tier-label {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-faint);
  padding: 1.5rem 0 1rem 9.5rem;
  position: sticky;
  top: var(--masthead-h);
  background: var(--surface);
  z-index: 2;
}

.lineage-full__nodes {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0;
}

/* Pivot section (the paper itself) */
.lineage-full__pivot {
  position: relative;
  z-index: 3;
  margin: 1rem 0;
}
.lineage-full__pivot-connector {
  width: 1px;
  height: 1.5rem;
  background: var(--accent);
  margin-left: 7.75rem;
  opacity: 0.4;
}

/* Individual node cards */
.lineage-node-card {
  display: grid;
  grid-template-columns: 7.5rem 1fr;
  gap: 0 1.25rem;
  padding: 1rem 0 1rem 0;
  border-bottom: 1px solid var(--line-soft);
  position: relative;
}
.lineage-node-card::before {
  content: "";
  position: absolute;
  left: 7.5rem;
  top: 1.5rem;
  width: 0.6rem;
  height: 0.6rem;
  border-radius: 50%;
  background: var(--surface);
  border: 1.5px solid var(--line);
  transform: translateX(-50%);
  z-index: 4;
}

.lineage-node-card--ancestor::before { border-color: var(--text-faint); }
.lineage-node-card--pivot::before {
  width: 0.85rem;
  height: 0.85rem;
  background: var(--accent);
  border-color: var(--accent);
}
.lineage-node-card--child::before { border-color: var(--accent-2); }

.lineage-node-card__year {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--accent);
  padding-top: 0.15rem;
  text-align: right;
  align-self: start;
}

.lineage-node-card__body { min-width: 0; }

.lineage-node-card__eyebrow {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 0.35rem;
}

.lineage-node-card__title {
  font-family: var(--serif);
  font-size: 1rem;
  line-height: 1.3;
  color: var(--text);
  margin: 0 0 0.25rem;
  font-weight: 500;
}
.lineage-node-card--pivot .lineage-node-card__title {
  font-size: 1.2rem;
}
.lineage-node-card__title a { color: inherit; }
.lineage-node-card__title a:hover { color: var(--accent); }

.lineage-node-card__author {
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--text-faint);
  margin: 0 0 0.5rem;
}

.lineage-node-card__concept {
  font-family: var(--serif);
  font-size: 0.88rem;
  line-height: 1.5;
  color: var(--text-2);
  margin: 0;
}

/* Pivot card gets a highlighted box */
.lineage-node-card--pivot {
  background: var(--surface-raised);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: 0 4px 4px 0;
  padding: 1.25rem 1.25rem 1.25rem 0;
  margin: 0;
}
.lineage-node-card--pivot::before {
  left: calc(7.5rem + 1.25rem);
}

@media (max-width: 540px) {
  .lineage-node-card {
    grid-template-columns: 4rem 1fr;
    gap: 0 0.75rem;
  }
  .lineage-full__body::before { left: 4.35rem; }
  .lineage-full__tier-label { padding-left: 5.5rem; }
  .lineage-node-card::before { left: 4.35rem; }
  .lineage-node-card--pivot::before { left: calc(4.35rem + 1.25rem); }
}