/* home_ui_v2 — chapter spreads */

/* Opening spread */
.opening {
  padding: 5.5rem 0 3.5rem;
}

.opening .display {
  font-size: clamp(3rem, 7.5vw, 5.6rem);
  margin-bottom: 1.25rem;
}

.opening .display b {
  display: block;
  font-weight: 700;
  color: var(--leaf-deep);
}

.opening .lede {
  max-width: 34rem;
  font-size: 1.15rem;
  margin-bottom: 2rem;
}

.opening-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 3rem;
}

.opening-scene {
  position: relative;
  border-radius: 1.25rem;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--paper-2);
}

.opening-scene img {
  width: 100%;
  height: clamp(200px, 32vw, 340px);
  object-fit: cover;
  object-position: center 45%;
}

.scene-tags {
  position: absolute;
  left: 1rem;
  bottom: 1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.scene-tags span {
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 600;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid var(--line);
  color: var(--ink);
}

/* Figures row */
.figures {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  margin: 3rem 0 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.figure {
  padding: 1.5rem 1.25rem 1.5rem 0;
  border-right: 1px solid var(--line);
}

.figure:last-child { border-right: 0; }

.figure strong {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 3.4vw, 2.6rem);
  letter-spacing: -0.04em;
  line-height: 1;
  color: var(--ink);
}

.figure span {
  display: block;
  margin-top: 0.4rem;
  font-size: 0.82rem;
  color: var(--ink-soft);
}

/* Chapter */
.chapter {
  position: relative;
  padding: 4.5rem 0;
  border-bottom: 1px solid var(--line);
  scroll-margin-top: 4rem;
}

.chapter:last-of-type { border-bottom: 0; }

.chapter-head {
  display: grid;
  grid-template-columns: 6rem 1fr;
  gap: 1.5rem;
  align-items: start;
  margin-bottom: 2rem;
}

.chapter-no {
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 5vw, 4rem);
  font-weight: 700;
  line-height: 0.85;
  letter-spacing: -0.05em;
  color: var(--paper-2);
  -webkit-text-stroke: 1px var(--line-strong);
}

.chapter-title {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3.2vw, 2.35rem);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.1;
  margin: 0 0 0.6rem;
}

.chapter-head p {
  margin: 0;
  max-width: 42rem;
  color: var(--ink-soft);
}

.chapter-body {
  display: grid;
  grid-template-columns: 6rem 1fr;
  gap: 1.5rem;
}

.chapter-body > :first-child { grid-column: 2; }

/* Definition rows */
.spec {
  margin: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.spec-row {
  display: grid;
  grid-template-columns: 12rem 1fr;
  gap: 1.5rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--line);
  align-items: baseline;
}

.spec-row dt {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
}

.spec-row dd {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.92rem;
}

.spec-row:hover dt { color: var(--leaf-deep); }

/* Vertical cycle timeline */
.timeline {
  position: relative;
  margin: 0;
  padding: 0 0 0 1.75rem;
  list-style: none;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 0.32rem;
  top: 0.5rem;
  bottom: 0.5rem;
  width: 2px;
  background: var(--line-strong);
}

.timeline-fill {
  position: absolute;
  left: 0.32rem;
  top: 0.5rem;
  width: 2px;
  background: var(--leaf);
  transition: height 0.5s var(--ease);
}

.tl-item {
  position: relative;
  padding: 0.85rem 0;
}

.tl-item::before {
  content: "";
  position: absolute;
  left: -1.75rem;
  top: 1.35rem;
  width: 0.75rem;
  height: 0.75rem;
  border-radius: 50%;
  background: var(--paper);
  border: 2px solid var(--line-strong);
  transition: border-color 0.25s var(--ease), background 0.25s var(--ease);
}

.tl-item.active::before {
  border-color: var(--leaf);
  background: var(--leaf);
}

.tl-btn {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  width: 100%;
  padding: 0;
  border: 0;
  background: none;
  text-align: left;
  cursor: pointer;
  color: var(--ink-soft);
  transition: color 0.2s var(--ease);
}

.tl-btn img {
  width: 1.9rem;
  height: 1.9rem;
  object-fit: contain;
  opacity: 0.55;
  transition: opacity 0.2s var(--ease);
}

.tl-item.active .tl-btn,
.tl-btn:hover { color: var(--ink); }

.tl-item.active .tl-btn img { opacity: 1; }

.tl-name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
}

.tl-note {
  display: block;
  margin: 0.15rem 0 0 2.75rem;
  font-size: 0.88rem;
  color: var(--ink-soft);
  max-width: 34rem;
}

.tl-item:not(.active) .tl-note { display: none; }

/* Split spread */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  align-items: center;
}

.split-art {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
  padding: 2rem 1.5rem;
  border-radius: 1rem;
  background: var(--paper-2);
  border: 1px solid var(--line);
}

.split-art > img {
  width: min(9rem, 45%);
}

.gauges {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.65rem;
  width: 100%;
}

.gauge {
  padding: 0.75rem 0.85rem;
  border-radius: 0.6rem;
  background: #fff;
  border: 1px solid var(--line);
}

.gauge span {
  display: block;
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 0.2rem;
}

.gauge strong {
  font-family: var(--font-display);
  font-size: 1.25rem;
  letter-spacing: -0.03em;
  color: var(--leaf-deep);
}

.gauge strong small {
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--ink-soft);
}

.gauge.water strong { color: var(--water); }
.gauge.temp strong { color: var(--temp); }

.gauge .bar {
  margin-top: 0.5rem;
  height: 3px;
  border-radius: 3px;
  background: rgba(23, 138, 82, 0.14);
  overflow: hidden;
}

.gauge .bar i {
  display: block;
  height: 100%;
  width: 69%;
  border-radius: 3px;
  background: var(--leaf);
  transition: width 0.7s var(--ease);
}

/* Inline sensor list */
.sensor-list {
  margin: 1.5rem 0 1.75rem;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1rem;
}

.sensor-list li {
  display: grid;
  grid-template-columns: 2.25rem 1fr;
  gap: 0.9rem;
  align-items: start;
}

.sensor-list img {
  width: 2.1rem;
  height: 2.1rem;
  object-fit: contain;
}

.sensor-list strong {
  display: block;
  font-family: var(--font-display);
  font-size: 0.98rem;
}

.sensor-list span {
  font-size: 0.88rem;
  color: var(--ink-soft);
}

.sensor-list em {
  font-style: normal;
  font-family: var(--font-lcd);
  font-weight: 600;
  color: var(--leaf-deep);
}

/* Tally ladder */
.ladder {
  margin: 0 0 1.5rem;
  padding: 0;
  list-style: none;
  counter-reset: rung;
}

.ladder li {
  position: relative;
  display: grid;
  grid-template-columns: 3.25rem 1fr;
  gap: 1.25rem;
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--line);
  align-items: baseline;
}

.ladder li::before {
  counter-increment: rung;
  content: counter(rung, decimal-leading-zero);
  font-family: var(--font-lcd);
  font-size: 0.85rem;
  color: var(--leaf);
  letter-spacing: 0.06em;
}

.ladder strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.05rem;
  margin-bottom: 0.15rem;
}

.ladder span {
  font-size: 0.9rem;
  color: var(--ink-soft);
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 1.5rem;
}

.tags span {
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  border: 1px solid var(--line-strong);
  color: var(--ink);
}

/* Platform list */
.platforms {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.platforms a {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 1.25rem;
  align-items: center;
  padding: 1.15rem 0;
  border-bottom: 1px solid var(--line);
  transition: padding 0.2s var(--ease), color 0.2s var(--ease);
}

.platforms a:hover {
  padding-left: 0.6rem;
  color: var(--leaf-deep);
}

.platforms strong {
  font-family: var(--font-display);
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}

.platforms span {
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.platforms .arrow {
  font-family: var(--font-lcd);
  color: var(--leaf);
}

/* Closing */
.closing {
  padding: 4rem 0 1rem;
}

.closing h2 {
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 4vw, 2.8rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.08;
  margin: 0 0 0.85rem;
  max-width: 26rem;
}

.closing p {
  margin: 0 0 1.75rem;
  max-width: 32rem;
  color: var(--ink-soft);
}

.closing-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

@media (max-width: 900px) {
  .opening { padding-top: 3rem; }
  .figures { grid-template-columns: 1fr 1fr; }
  .figure {
    padding: 1.15rem 1rem 1.15rem 0;
    border-bottom: 1px solid var(--line);
  }
  .figure:nth-child(2) { border-right: 0; }
  .figure:nth-child(n + 3) { border-bottom: 0; }

  .chapter-head,
  .chapter-body { grid-template-columns: 1fr; gap: 0.75rem; }
  .chapter-body > :first-child { grid-column: 1; }
  .chapter-no { font-size: 2.2rem; }

  .spec-row { grid-template-columns: 1fr; gap: 0.25rem; }
  .split { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  .figures { grid-template-columns: 1fr; }
  .figure { border-right: 0; }
  .gauges { grid-template-columns: 1fr; }
  .platforms a { grid-template-columns: 1fr auto; }
  .platforms .arrow { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  .platforms a:hover { padding-left: 0; }
}