/* ---------------------------------------------------------------
   Chapters 1-4: Opportunity, Problem, Third Option, Who We Are
--------------------------------------------------------------- */

/* ================= CHAPTER 1 — HERO ================= */
.chapter--hero { min-height: 100vh; align-items: center; }
.chapter--hero .chapter__bg img { filter: saturate(0.9) brightness(0.62) blur(1.5px); transform: scale(1.12); }
.hero__stage {
  text-align: left;
  max-width: 900px;
}
.hero__stage h1 { margin-top: var(--space-md); }
.hero__stage .lead { margin-top: var(--space-sm); max-width: 46ch; }

/* ================= CHAPTER 2 — PROBLEM ================= */
.chapter--problem { background: var(--navy-900); }
.problemgrid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
  margin-top: var(--space-lg);
}
.problemcard {
  position: relative;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: var(--bg-raised);
  overflow: hidden;
  padding: var(--space-md) var(--space-sm) var(--space-sm);
  transition: border-color var(--dur-fast) var(--ease-out), transform var(--dur-fast) var(--ease-out);
}
.problemcard:hover { border-color: var(--border-strong); transform: translateY(-4px); }
.problemcard__media {
  position: absolute;
  inset: 0;
  z-index: 0;
  opacity: 0.22;
}
.problemcard__media img {
  width: 100%; height: 100%;
  object-fit: cover;
  filter: grayscale(0.4) brightness(0.55) blur(2px);
}
.problemcard__media--tone {
  background: radial-gradient(circle at 70% 20%, rgba(201,169,110,0.18), transparent 60%);
}
.problemcard::after {
  content: "";
  position: absolute; inset: 0; z-index: 0;
  background: linear-gradient(180deg, rgba(8,15,24,0.35), var(--bg-raised) 85%);
}
.problemcard__icon {
  position: relative; z-index: 1;
  color: var(--gold);
  margin-bottom: var(--space-sm);
}
.problemcard h4, .problemcard p { position: relative; z-index: 1; }
.problemcard h4 { margin-bottom: 10px; }
.problemcard p { color: var(--text-dim); font-size: 14.5px; line-height: 1.6; }
.problemcard .text-gold { color: var(--gold-soft); font-weight: 600; }

@media (max-width: 1080px) {
  .problemgrid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
  .problemgrid { grid-template-columns: 1fr; }
}

/* ================= CHAPTER 3 — BETTER WAY ================= */
.chapter--betterway .chapter__bg img { object-position: 78% center; }
.chapter--betterway .chapter__header h2 { max-width: 16ch; }

.compare {
  margin-top: var(--space-lg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: rgba(8, 15, 24, 0.55);
  backdrop-filter: blur(14px);
  overflow-x: auto;
  box-shadow: var(--shadow-card);
}
.compare__row {
  display: grid;
  grid-template-columns: 130px repeat(4, minmax(150px, 1fr));
  min-width: 760px;
}
.compare__row + .compare__row { border-top: 1px solid var(--border); }
.compare__cell {
  padding: 18px 18px;
  font-size: 13.5px;
  color: var(--text-dim);
  line-height: 1.4;
  display: flex;
  align-items: center;
}
.compare__cell--label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-dim);
}
.compare__row--head .compare__cell {
  font-weight: 600;
  color: var(--mist-100);
  font-size: 14px;
  padding-top: 22px;
  padding-bottom: 22px;
}
.compare__cell.is-hero {
  color: var(--white);
  font-weight: 500;
  background: linear-gradient(180deg, rgba(201,169,110,0.14), rgba(201,169,110,0.03));
  position: relative;
}
.compare__row--head .compare__cell.is-hero {
  color: var(--gold-soft);
}
.compare__cell.is-hero::before {
  content: "";
  position: absolute; left: 0; top: 0; bottom: 0;
  width: 2px;
  background: var(--gold);
}

/* ================= CHAPTER 4 — WHO WE ARE ================= */
.chapter--whoweare .chapter__bg img { object-position: 65% 30%; }
.chapter--whoweare .body-copy { margin-top: var(--space-xs); }

.credentials-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-sm);
  margin-top: var(--space-lg);
}
.credential {
  padding: var(--space-sm);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: rgba(8, 15, 24, 0.55);
  backdrop-filter: blur(10px);
}
.credential h4 { font-size: 15.5px; margin-bottom: 6px; }
.credential p { font-size: 14.5px; color: var(--text-dim); line-height: 1.55; }
.credential--stat {
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.credential--stat .stat__num { display: block; }
.credential__desc {
  display: block;
  margin-top: 8px;
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.5;
}

@media (max-width: 900px) {
  .credentials-row { grid-template-columns: 1fr; }
  .compare__row { min-width: 640px; }
}

/* -------- presenter-mode compaction -------- */
body.presenter-mode .chapter--whoweare .lead { max-width: 48ch; }
body.presenter-mode .chapter--whoweare .body-copy { margin-top: var(--space-3xs); }
body.presenter-mode .chapter--whoweare .credentials-row { margin-top: var(--space-sm); }
body.presenter-mode .compare__cell { padding: 14px 18px; }
body.presenter-mode .compare__row--head .compare__cell { padding-top: 16px; padding-bottom: 16px; }