/* ============================================================
   CHAPTER I — THE PERSON
   chapter-i.css
   ============================================================ */

/* ============================================================
   HERO
   ============================================================ */
.hero {
  min-height: 100vh;
  background: var(--bg-primary);
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: var(--nav-h);
}

.hero__bg-numeral {
  right: -4vw;
  top: 50%;
  transform: translateY(-52%);
}

.hero__content {
  position: relative;
  z-index: 2;
  padding-top: var(--space-24);
  padding-bottom: var(--space-24);
  max-width: 820px;
}

/* Name treatment */
.hero__name {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-bottom: var(--space-8);
}

.hero__name-line {
  display: block;
  color: var(--text-primary);
  line-height: 0.90;
}

.hero__name-line--offset {
  /* Deliberate asymmetric offset — not centred, not fully left */
  padding-left: clamp(1.5rem, 5vw, 4rem);
}

/* Italic subtitle in amber */
.hero__subtitle {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.4rem;
  font-weight: 300;
  color: var(--amber);
  margin-bottom: var(--space-4);
  margin-top: var(--space-6);
}

/* One-sentence bio */
.hero__bio {
  max-width: 520px;
  margin-bottom: var(--space-8);
  color: var(--text-secondary);
}

/* CTAs */
.hero__ctas {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
}

/* ============================================================
   IDENTITY CARDS
   ============================================================ */
.identity-section {
  padding-top: var(--space-24);
  padding-bottom: var(--space-32);
}

.identity-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
  margin-top: var(--space-4);
}

.identity-card {
  padding: var(--space-8) var(--space-6) var(--space-6);
  min-height: 460px;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  transition:
    transform var(--t-base) var(--ease-out),
    border-color var(--t-base) ease;
}

.identity-card:hover {
  transform: translateY(-4px);
}

.identity-card[data-identity="engineer"]:hover { border-color: rgba(107,143,191,0.4); }
.identity-card[data-identity="debater"]:hover  { border-color: rgba(168,149,106,0.4); }
.identity-card[data-identity="runner"]:hover   { border-color: rgba(200, 55, 60, 0.4); }

/* SVG motif watermark */
.identity-card__motif {
  position: absolute;
  bottom: var(--space-4);
  right: var(--space-4);
  width: 120px;
  height: auto;
  color: var(--text-primary);
  opacity: 0.07;
  pointer-events: none;
  transition: opacity var(--t-base) ease;
}

.identity-card:hover .identity-card__motif {
  opacity: 0.12;
}

.identity-card__content {
  position: relative;
  z-index: 1;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.identity-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: auto;
  padding-top: var(--space-6);
}

/* ============================================================
   CHAPTER NAVIGATOR
   ============================================================ */
.chapter-nav-section {
  padding-bottom: var(--space-32);
}

.chapter-nav {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.chapter-nav-item {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  padding: var(--space-6) 0;
  text-decoration: none;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border);
  transition:
    background var(--t-base) ease,
    padding-left var(--t-base) var(--ease-out);
  position: relative;
}

.chapter-nav-item:first-child { border-top: 1px solid var(--border); }

.chapter-nav-item:hover {
  padding-left: var(--space-4);
}

.chapter-nav-item:hover .chapter-nav-item__arrow {
  color: var(--red);
  transform: translateX(6px);
}

.chapter-nav-item:hover .chapter-nav-item__num {
  opacity: 1;
  color: var(--red);
}

.chapter-nav-item__num {
  font-size: clamp(2.5rem, 5vw, 4rem);
  color: var(--text-muted);
  min-width: 80px;
  line-height: 1;
  transition: color var(--t-base) ease, opacity var(--t-base) ease;
  opacity: 0.4;
}

.chapter-nav-item__body {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.chapter-nav-item__title {
  display: block;
  color: var(--text-primary);
}

.chapter-nav-item__arrow {
  font-size: var(--text-xl);
  color: var(--slate);
  flex-shrink: 0;
  transition: transform var(--t-base) var(--ease-out), color var(--t-base) ease;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .identity-cards {
    grid-template-columns: repeat(2, 1fr);
  }

  .identity-card:last-child {
    grid-column: 1 / -1;
    min-height: 300px;
  }

  .identity-card:last-child .identity-card__content {
    flex-direction: row;
    gap: var(--space-8);
    align-items: flex-start;
  }
}

@media (max-width: 768px) {
  .hero__content {
    padding-top: var(--space-16);
    padding-bottom: var(--space-16);
  }

  .hero__bg-numeral {
    right: -10vw;
    font-size: 60vw;
    top: auto;
    bottom: -5vh;
    transform: none;
  }

  .hero__ctas { flex-direction: column; }
  .hero__ctas .btn { width: 100%; justify-content: center; }

  .identity-cards {
    grid-template-columns: 1fr;
  }

  .identity-card:last-child {
    grid-column: auto;
  }

  .identity-card:last-child .identity-card__content {
    flex-direction: column;
  }

  .identity-card {
    min-height: 320px;
  }

  .chapter-nav-item__num {
    font-size: 2rem;
    min-width: 48px;
  }

  .chapter-nav-item {
    gap: var(--space-4);
  }
}