/* /lineage — scroll-driven timeline */

.lineage-hero {
  padding-block: var(--space-7) var(--space-6);
  border-bottom: 3px solid var(--accent);
  position: relative;
}

.lineage-hero__eyebrow {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.22em;
  color: var(--accent);
  margin-bottom: var(--space-3);
}

.lineage-hero h1 {
  font-size: var(--fs-2xl);
  margin-bottom: var(--space-3);
  max-width: 22ch;
}

.lineage-hero__sub {
  font-family: var(--font-display);
  font-size: var(--fs-lg);
  line-height: 1.3;
  max-width: 50ch;
  color: var(--fg-soft);
}

.lineage-trail {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-4);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.lineage-trail a {
  color: var(--muted);
  text-decoration: none;
  border: 1px solid var(--border-strong);
  padding: 0.25rem 0.6rem;
}

.lineage-trail a:hover,
.lineage-trail a:focus-visible {
  color: var(--accent);
  border-color: var(--accent);
  outline: none;
}

/* ------------------------------------------------------------------
   BEAT — the heart of the timeline
   ------------------------------------------------------------------ */

.lineage {
  --beat-bg-on: rgba(225, 29, 46, 0.08);
}

.beat {
  padding-block: var(--space-7);
  border-bottom: 1px solid var(--border);
  position: relative;
  scroll-margin-top: var(--space-6);
  transition: background 600ms var(--ease-snap);
}

.beat[data-on="true"] {
  background: var(--beat-bg-on);
}

.beat:last-child {
  border-bottom: 0;
}

.beat__grid {
  display: grid;
  grid-template-columns: 9rem 1fr;
  gap: var(--space-5);
  align-items: start;
  opacity: 0;
  transform: translateY(2rem);
  transition: opacity 700ms var(--ease-snap), transform 700ms var(--ease-snap);
}

.beat[data-on="true"] .beat__grid {
  opacity: 1;
  transform: none;
}

.beat__year {
  font-family: var(--font-display);
  font-size: var(--fs-2xl);
  line-height: 1;
  color: var(--accent);
}

.beat__era {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  margin-top: var(--space-2);
  display: block;
  color: var(--fg-soft);
}

.beat__place {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--muted);
  margin-top: var(--space-2);
  display: block;
}

.beat__body h2 {
  font-size: var(--fs-2xl);
  margin: 0 0 var(--space-3);
  line-height: 1.05;
}

.beat__prose {
  font-family: var(--font-display);
  font-size: var(--fs-lg);
  line-height: 1.4;
  max-width: 56ch;
  color: var(--fg-soft);
}

.beat__split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
  margin-top: var(--space-4);
  border-top: 1px dashed var(--border-strong);
  padding-top: var(--space-3);
}

.beat__split dt {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--accent);
  margin-bottom: var(--space-1);
}

.beat__split dd {
  margin: 0;
  font-size: var(--fs-sm);
  color: var(--fg-soft);
  max-width: 36ch;
}

.beat__voices {
  margin-top: var(--space-3);
  font-size: var(--fs-sm);
  color: var(--muted);
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}

.beat__voices strong {
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-size: var(--fs-xs);
  margin-right: var(--space-2);
}

.beat__citation {
  margin-top: var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--muted);
}

@media (max-width: 720px) {
  .beat__grid {
    grid-template-columns: 1fr;
    gap: var(--space-3);
  }
  .beat__split {
    grid-template-columns: 1fr;
  }
  .beat__year {
    font-size: var(--fs-xl);
  }
}

/* ------------------------------------------------------------------
   REFRAIN — repeats between beats so the through-line stays loud
   ------------------------------------------------------------------ */

.refrain {
  padding-block: var(--space-5);
  text-align: center;
  border-top: 1px dashed var(--accent);
  border-bottom: 1px dashed var(--accent);
  background: var(--bg-elevated);
}

.refrain__text {
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(1.4rem, 3.6vw, 2rem);
  margin: 0;
  color: var(--accent);
  letter-spacing: -0.01em;
}

/* ------------------------------------------------------------------
   FINAL — the fence-post that turns it from history to your problem
   ------------------------------------------------------------------ */

.lineage-final {
  padding-block: var(--space-7);
  text-align: center;
  background: var(--accent);
  color: var(--accent-ink);
}

.lineage-final h2 {
  font-size: var(--fs-2xl);
  margin: 0 auto var(--space-3);
  max-width: 24ch;
  color: var(--accent-ink);
}

.lineage-final p {
  font-family: var(--font-display);
  font-size: var(--fs-lg);
  line-height: 1.3;
  max-width: 44ch;
  margin: 0 auto var(--space-4);
}

.lineage-final .btn {
  background: var(--accent-ink);
  color: var(--accent);
  border-color: var(--accent-ink);
}

.lineage-final .btn:hover,
.lineage-final .btn:focus-visible {
  background: var(--bg);
  color: var(--accent);
  border-color: var(--bg);
  box-shadow: 3px 3px 0 var(--accent-ink);
}

@media (prefers-reduced-motion: reduce) {
  .beat__grid {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .beat[data-on="true"] {
    background: transparent;
  }
}

/* ------------------------------------------------------------------
   PUNK VARIANT — Phase 5b.4
   Each .beat renders as a torn-paper card with rotation; between beats
   a red hand-drawn slash acts as the "arrow" connecting eras. Final
   "you are the next beat" section gets film-strip and splotch accents.
   ------------------------------------------------------------------ */

.beat {
  position: relative;
  margin-block: var(--space-5);
  padding-block: var(--space-5) var(--space-6);
  background: var(--paper-bright);
  color: var(--paper-ink);
  isolation: isolate;
  overflow: visible;
  box-shadow: 6px 6px 0 var(--accent),
    0 1px 0 rgba(0, 0, 0, 0.45) inset;
  transform-origin: center top;
}
.beat::before {
  /* torn-paper top edge */
  content: "";
  position: absolute;
  top: -2px;
  left: 0;
  right: 0;
  height: 22px;
  background-image: var(--punk-torn-corner);
  background-repeat: repeat-x;
  background-size: auto 100%;
  opacity: 0.85;
  pointer-events: none;
  z-index: 4;
}
.beat::after {
  /* low-opacity zine-collage texture beneath the prose */
  content: "";
  position: absolute;
  inset: 0;
  background-image: var(--punk-newspaper);
  background-size: cover;
  background-position: center;
  opacity: 0.12;
  mix-blend-mode: multiply;
  pointer-events: none;
  z-index: 0;
}
.beat > * {
  position: relative;
  z-index: 1;
}

/* Per-beat rotation — alternate small +/- */
.beat:nth-of-type(odd) {
  transform: rotate(-0.5deg);
}
.beat:nth-of-type(even) {
  transform: rotate(0.4deg);
  box-shadow: 6px 6px 0 var(--accent-pink),
    0 1px 0 rgba(0, 0, 0, 0.45) inset;
}

/* Override beat heading colors for cream paper background */
.beat__year {
  color: var(--accent-red-deep) !important;
  font-weight: 700;
}
.beat__era {
  color: var(--ink-marker) !important;
  background: var(--accent);
  color: var(--accent-ink) !important;
  padding: 0.3em 0.6em;
  font-family: var(--font-mono);
  font-weight: 700;
  letter-spacing: 0.18em;
  display: inline-block;
}
.beat__place {
  color: var(--ink-marker) !important;
  opacity: 0.7;
}
.beat h2 {
  color: var(--ink-marker) !important;
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 700;
}
.beat__prose,
.beat__split,
.beat__voices,
.beat__citation {
  color: var(--ink-marker) !important;
}
.beat__split dt {
  color: var(--accent-red-deep) !important;
  font-family: var(--font-mono);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-size: var(--fs-xs);
  font-weight: 700;
}
.beat__split dd {
  color: var(--ink-marker) !important;
}

/* Hand-drawn red arrow / slash between beats. Floats centered between
   each <article class="beat"> and the next sibling. Clickable feel. */
.beat + article.beat::before,
.beat + .lineage-refrain + article.beat::before {
  /* override the basic torn edge to include the arrow as well */
}
/* Standalone arrow: an extra ::after on each .beat that isn't the last,
   absolutely positioned just below it so it appears between beats. */
.beat:not(:last-of-type) {
  margin-bottom: calc(var(--space-7) + var(--space-3));
}
.beat:not(:last-of-type) > .wrap::after {
  content: "";
  position: absolute;
  bottom: calc(-1 * var(--space-7));
  left: 50%;
  transform: translateX(-50%) rotate(8deg);
  width: 240px;
  height: 100px;
  background-image: var(--punk-red-slash);
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
  opacity: 0.78;
  pointer-events: none;
  z-index: 3;
}

/* Final "you are the next beat" CTA — pink splatter + film-strip */
.lineage-final {
  position: relative;
  padding-block: var(--space-7);
  isolation: isolate;
}
.lineage-final::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 28px;
  background-image: var(--punk-film-strip);
  background-repeat: repeat-x;
  background-size: auto 100%;
  pointer-events: none;
  z-index: 1;
}
.lineage-final::after {
  content: "";
  position: absolute;
  bottom: 6%;
  right: 4%;
  width: 200px;
  height: 200px;
  background-image: var(--punk-splotch-pink);
  background-size: contain;
  background-repeat: no-repeat;
  opacity: 0.6;
  transform: rotate(20deg);
  pointer-events: none;
  z-index: 0;
}

/* Lineage hero: keep existing punk-tile, add torn corner detail */
.lineage-hero {
  position: relative;
}
.lineage-hero::after {
  content: "";
  position: absolute;
  top: 8%;
  right: 5%;
  width: 180px;
  height: 180px;
  background-image: var(--punk-scissors);
  background-size: contain;
  background-repeat: no-repeat;
  opacity: 0.42;
  transform: rotate(-20deg);
  pointer-events: none;
  z-index: 0;
  filter: grayscale(100%);
}

@media (prefers-reduced-motion: reduce) {
  .beat,
  .beat:not(:last-of-type) > .wrap::after,
  .lineage-final::after,
  .lineage-hero::after {
    transform: none !important;
  }
}