/* ================================================================
   BOOK PAGE — page-scoped styles only
================================================================ */

/* ---- HERO ---- */
.book-hero {
  background: var(--so-ink-900);
  color: #fff;
  padding: clamp(72px, 8vw, 120px) 0;
}
.book-hero__inner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: clamp(48px, 8vw, 96px);
  align-items: center;
}
.book-hero__content { max-width: 600px; }
.book-hero__content h1 {
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 1.4rem + 4vw, 4.2rem);
  font-weight: var(--weight-extrabold);
  line-height: 1.07;
  letter-spacing: -0.02em;
  margin: 0 0 24px;
  color: #fff;
}
.book-hero__content h1 em {
  font-style: normal;
  color: var(--so-cyan-400);
}
.book-hero__content p {
  font-size: clamp(1rem, 0.85rem + 0.8vw, 1.2rem);
  line-height: 1.65;
  color: rgba(255,255,255,0.75);
  margin: 0 0 36px;
  max-width: 52ch;
}
.book-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}
.book-hero__award {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 36px;
  padding-top: 32px;
  border-top: 1px solid rgba(255,255,255,0.1);
}
.book-hero__award img { height: 52px; width: auto; }
.book-hero__award-text {
  font-size: 13px;
  color: rgba(255,255,255,0.6);
  line-height: 1.4;
}
.book-hero__award-text strong {
  display: block;
  color: rgba(255,255,255,0.9);
  font-weight: var(--weight-semibold);
  font-size: 14px;
}
.book-hero__cover { flex-shrink: 0; }
.book-hero__cover img {
  width: clamp(260px, 26vw, 400px);
  height: auto;
  display: block;
  border-radius: var(--radius-xl);
  box-shadow: 0 40px 80px rgba(0,0,0,0.55), 0 12px 28px rgba(0,0,0,0.3);
}

/* ---- PRESS STRIP ---- */
.press-strip { border-top: 1px solid var(--border-1); }
.press-strip__label {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: var(--weight-bold);
  color: var(--fg-4);
  text-align: center;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin: 0 0 28px;
}
.press-logos {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: clamp(20px, 4vw, 48px);
}
.press-logo-item {
  opacity: 0.42;
  transition: opacity var(--duration-base) var(--ease-out);
}
.press-logo-item:hover { opacity: 0.85; }
.press-logo-item img {
  height: 26px;
  width: auto;
  object-fit: contain;
  display: block;
}

/* ---- ABOUT ---- */
.about-inner {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: clamp(48px, 7vw, 96px);
  align-items: start;
}
.about-text h2 {
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 0.9rem + 2.4vw, 2.6rem);
  font-weight: var(--weight-bold);
  line-height: 1.15;
  letter-spacing: -0.018em;
  margin: 0 0 24px;
  color: var(--fg-1);
}
.about-text p {
  font-size: 16px;
  line-height: 1.75;
  color: var(--fg-2);
  margin: 0 0 18px;
}
.about-text p:last-child { margin-bottom: 0; }
.product-card {
  background: var(--bg-subtle);
  border-radius: var(--radius-2xl);
  padding: 32px;
  border: 1px solid var(--border-1);
}
.product-card__cover {
  width: 100%;
  aspect-ratio: 3/4;
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 28px;
  box-shadow: var(--shadow-md);
}
.product-card__cover img { width: 100%; height: 100%; object-fit: cover; display: block; }
.product-card__meta { list-style: none; margin: 0 0 24px; padding: 0; }
.product-card__meta li {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 10px 0;
  border-bottom: 1px solid var(--border-1);
  font-size: 14px;
  gap: 12px;
}
.product-card__meta li:last-child { border-bottom: none; }
.product-card__meta .meta-label { color: var(--fg-3); font-weight: var(--weight-medium); white-space: nowrap; }
.product-card__meta .meta-val { color: var(--fg-1); font-weight: var(--weight-semibold); text-align: right; }

/* ---- TRAILER ---- */
.trailer-inner { max-width: 900px; margin: 0 auto; }
.trailer-inner h2 {
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 0.9rem + 2.4vw, 2.6rem);
  font-weight: var(--weight-bold);
  letter-spacing: -0.018em;
  line-height: 1.15;
  margin: 0 0 40px;
  text-align: center;
  color: var(--fg-1);
}
.trailer-player {
  position: relative;
  width: 100%;
  border-radius: var(--radius-2xl);
  overflow: hidden;
  aspect-ratio: 16/9;
  background: var(--so-ink-900);
  box-shadow: var(--shadow-xl);
}
.trailer-player video { width: 100%; height: 100%; object-fit: cover; display: block; }

/* ---- CHAPTER ACCORDION (klapuit) ---- */
.chapters-inner h2 {
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 0.9rem + 2.4vw, 2.6rem);
  font-weight: var(--weight-bold);
  letter-spacing: -0.018em;
  line-height: 1.15;
  margin: 0 0 40px;
  color: var(--fg-1);
}
.chapters-accordion { border-top: 1px solid var(--border-1); }
.chapter-acc-item { border-bottom: 1px solid var(--border-1); }
.chapter-acc-head {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 22px 4px;
  cursor: pointer;
  list-style: none;
  user-select: none;
}
.chapter-acc-head::-webkit-details-marker { display: none; }
.chapter-acc-head::marker { display: none; }
.chapter-acc-num {
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: var(--weight-bold);
  letter-spacing: 0.1em;
  color: var(--so-cyan-500);
  min-width: 30px;
  flex-shrink: 0;
}
.chapter-acc-title {
  flex: 1;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: var(--weight-semibold);
  color: var(--fg-1);
  margin: 0;
  line-height: 1.3;
}
.chapter-acc-chevron {
  flex-shrink: 0;
  color: var(--fg-3);
  transition: transform 240ms var(--ease-out);
}
details[open] > .chapter-acc-head .chapter-acc-chevron { transform: rotate(180deg); }
.chapter-acc-body {
  display: grid;
  grid-template-columns: 1fr 260px;
  gap: 32px;
  padding: 4px 4px 28px 50px;
  align-items: start;
}
.chapter-acc-subtitle {
  font-size: 14px;
  font-weight: var(--weight-semibold);
  color: var(--so-cyan-600);
  font-style: italic;
  margin: 0 0 12px;
}
.chapter-acc-text {
  font-size: 15px;
  line-height: 1.75;
  color: var(--fg-2);
  margin: 0;
}
.chapter-acc-img {
  width: 100%;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4/3;
}
.chapter-acc-img img { width: 100%; height: 100%; object-fit: cover; display: block; }

/* ---- ENDORSEMENTS ---- */
.endorsements-inner h2 {
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 0.9rem + 2.4vw, 2.6rem);
  font-weight: var(--weight-bold);
  letter-spacing: -0.018em;
  line-height: 1.15;
  margin: 0 0 48px;
  color: var(--fg-1);
  text-align: center;
}
.endorsements-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.endorsement-card {
  background: var(--bg-canvas);
  border-radius: var(--radius-2xl);
  padding: 32px 28px;
  border: 1px solid var(--border-1);
  display: flex;
  flex-direction: column;
  transition: box-shadow var(--duration-base) var(--ease-out), transform var(--duration-base) var(--ease-out);
}
.endorsement-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
.endorsement-card__stars {
  display: flex;
  gap: 3px;
  margin-bottom: 16px;
}
.endorsement-card__quote {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 15px;
  line-height: 1.75;
  color: var(--fg-2);
  margin: 0 0 24px;
  flex: 1;
}
.endorsement-card__quote::before { content: "\201C"; }
.endorsement-card__quote::after  { content: "\201D"; }
.endorsement-card__divider {
  width: 32px;
  height: 2px;
  background: var(--so-cyan-400);
  border-radius: 2px;
  margin-bottom: 16px;
}
.endorsement-card__name { font-size: 14px; font-weight: var(--weight-bold); color: var(--fg-1); margin: 0 0 3px; }
.endorsement-card__role { font-size: 13px; color: var(--fg-3); margin: 0; line-height: 1.4; }

/* ---- AUTHORS ---- */
.authors-inner h2 {
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 0.9rem + 2.4vw, 2.6rem);
  font-weight: var(--weight-bold);
  letter-spacing: -0.018em;
  line-height: 1.15;
  margin: 0 0 52px;
  color: var(--fg-1);
}
.authors-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; }
.author-card2 { display: flex; flex-direction: column; }
.author-card2__img {
  width: 100%;
  height: 280px;
  border-radius: var(--radius-xl);
  overflow: hidden;
  margin-bottom: 24px;
  background: var(--so-gray-100);
}
.author-card2__img img { width: 100%; height: 100%; object-fit: cover; object-position: top; display: block; }
.author-card2__name { font-family: var(--font-display); font-size: 18px; font-weight: var(--weight-bold); margin: 0 0 4px; color: var(--fg-1); }
.author-card2__role { font-size: 13px; font-weight: var(--weight-medium); color: var(--so-cyan-600); text-transform: uppercase; letter-spacing: 0.08em; margin: 0 0 14px; }
.author-card2__bio { font-size: 14px; line-height: 1.7; color: var(--fg-2); margin: 0; }

/* ---- WHERE TO BUY ---- */
.buy-inner {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: clamp(48px, 7vw, 96px);
  align-items: center;
}
.buy-cover img {
  width: clamp(160px, 14vw, 220px);
  height: auto;
  display: block;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
}
.buy-content h2 {
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 0.9rem + 2.4vw, 2.6rem);
  font-weight: var(--weight-bold);
  letter-spacing: -0.018em;
  line-height: 1.15;
  margin: 0 0 12px;
  color: var(--fg-1);
}
.buy-content p { font-size: 16px; color: var(--fg-2); margin: 0 0 32px; line-height: 1.6; }
.buy-retailers { display: flex; flex-wrap: wrap; gap: 12px; }
.btn--retailer {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: var(--radius-pill);
  font-size: 14px;
  font-weight: var(--weight-semibold);
  text-decoration: none;
  background: var(--bg-canvas);
  color: var(--fg-1);
  border: 1.5px solid var(--border-2);
  transition: border-color var(--duration-fast) var(--ease-out), box-shadow var(--duration-fast) var(--ease-out), transform var(--duration-fast) var(--ease-out);
}
.btn--retailer:hover { border-color: var(--so-cyan-500); box-shadow: 0 4px 14px rgba(0,217,244,0.18); transform: translateY(-1px); color: var(--fg-1); }

/* ---- CTA ---- */
.book-cta {
  background: var(--so-ink-900);
  color: #fff;
  padding: clamp(80px, 8vw, 120px) 0;
  text-align: center;
}
.book-cta__inner { max-width: 640px; margin: 0 auto; }
.book-cta h2 { font-family: var(--font-display); font-size: clamp(1.8rem, 1.2rem + 2vw, 2.8rem); font-weight: var(--weight-bold); letter-spacing: -0.018em; line-height: 1.2; margin: 0 0 16px; color: #fff; }
.book-cta p { font-size: 17px; line-height: 1.6; color: rgba(255,255,255,0.75); margin: 0 0 36px; }
.book-cta__actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; }

/* ---- HERO PROOF + BREADCRUMB ---- */
.book-breadcrumb {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13.5px;
  font-weight: var(--weight-semibold);
  color: rgba(255,255,255,0.55);
  text-decoration: none;
  margin-bottom: 24px;
  transition: color var(--duration-fast) var(--ease-out);
}
.book-breadcrumb:hover { color: var(--so-cyan-400); }
.book-hero__proof {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin: -16px 0 32px;
  font-size: 13.5px;
  color: rgba(255,255,255,0.65);
}
.book-hero__stars { display: inline-flex; gap: 2px; }
.book-hero__content .book-hero__disclaimer {
  font-size: 13.5px;
  color: rgba(255,255,255,0.4);
  margin: 44px 0 0;
  max-width: 52ch;
}
.book-hero__content .book-hero__disclaimer a { color: rgba(255,255,255,0.6); text-decoration: underline; }
.book-hero__content .book-hero__disclaimer a:hover { color: var(--so-cyan-400); }

/* ---- TRAILER EMBED ---- */
.trailer-player iframe { width: 100%; height: 100%; border: 0; display: block; }
.trailer-credit { text-align: center; font-size: 13px; color: var(--fg-3); margin: 16px 0 0; }
.trailer-credit a { color: var(--link); }

/* ---- FEATURED ENDORSEMENT ---- */
.endorsement-featured {
  max-width: 760px;
  margin: 0 auto 48px;
  text-align: center;
}
.endorsement-featured .endorsement-card__stars { justify-content: center; }
.endorsement-featured__quote {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(1.2rem, 1rem + 1.2vw, 1.65rem);
  line-height: 1.55;
  color: var(--fg-1);
  margin: 0 0 18px;
}

/* ---- FREE CHAPTER ---- */
.free-chapter-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(36px, 5vw, 72px);
  align-items: center;
  background: var(--bg-subtle);
  border: 1px solid var(--border-1);
  border-radius: var(--radius-2xl);
  padding: clamp(36px, 5vw, 64px);
}
.free-chapter-card h2 {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 0.9rem + 2vw, 2.2rem);
  font-weight: var(--weight-bold);
  letter-spacing: -0.018em;
  line-height: 1.15;
  margin: 0 0 14px;
  color: var(--fg-1);
}
.free-chapter-lead { font-size: 16px; line-height: 1.7; color: var(--fg-2); margin: 0; }
.free-chapter-form { display: flex; flex-direction: column; gap: 14px; }
.free-chapter-row { display: flex; gap: 12px; flex-wrap: wrap; }
.free-chapter-form input[type="email"] {
  flex: 1;
  min-width: 220px;
  padding: 13px 20px;
  border-radius: var(--radius-pill);
  border: 1.5px solid var(--border-2);
  font: inherit;
  font-size: 14px;
  background: var(--bg-canvas);
  color: var(--fg-1);
}
.free-chapter-form input[type="email"]:focus {
  outline: none;
  border-color: var(--so-cyan-500);
  box-shadow: 0 0 0 6px rgba(0,217,244,0.18);
}
.free-chapter-consent { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--fg-3); }
.free-chapter-consent a { color: var(--link); }
.free-chapter-success { font-size: 14px; color: var(--so-success); font-weight: var(--weight-semibold); margin: 0; }

/* ---- AUTHOR LINK ---- */
.author-card2__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 14px;
  font-size: 14px;
  font-weight: var(--weight-semibold);
  color: var(--link);
  text-decoration: none;
}
.author-card2__link:hover { color: var(--link-hover); }

/* ---- ABOUT SPARKOPTIMUS ---- */
.about-so { max-width: 720px; }
.about-so h2 {
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 0.9rem + 2.4vw, 2.6rem);
  font-weight: var(--weight-bold);
  letter-spacing: -0.018em;
  line-height: 1.15;
  margin: 0 0 20px;
  color: var(--fg-1);
}
.about-so p { font-size: 16px; line-height: 1.75; color: var(--fg-2); margin: 0 0 28px; }
.about-so__actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* ---- MORE FROM SPARKOPTIMUS ---- */
.more-title {
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 0.9rem + 2.4vw, 2.6rem);
  font-weight: var(--weight-bold);
  letter-spacing: -0.018em;
  line-height: 1.15;
  margin: 0 0 40px;
  color: var(--fg-1);
}
.more-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
.more-card {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 28px;
  align-items: center;
  background: var(--bg-canvas);
  border: 1px solid var(--border-1);
  border-radius: var(--radius-2xl);
  padding: 28px;
  text-decoration: none;
  transition: box-shadow var(--duration-base) var(--ease-out), transform var(--duration-base) var(--ease-out);
}
.more-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
.more-card__img { border-radius: var(--radius-lg); overflow: hidden; background: var(--so-gray-50); }
.more-card__img img { width: 100%; height: auto; display: block; }
.more-card h3 { font-family: var(--font-display); font-size: 17px; font-weight: var(--weight-bold); color: var(--fg-1); margin: 0 0 8px; }
.more-card p { font-size: 14px; line-height: 1.6; color: var(--fg-2); margin: 0 0 14px; }
.more-card__cta { font-size: 14px; font-weight: var(--weight-semibold); color: var(--link); }

/* ---- RESPONSIVE ---- */
@media (max-width: 1024px) {
  .book-hero__inner     { grid-template-columns: 1fr; }
  .book-hero__cover     { order: -1; }
  .book-hero__cover img { max-width: 280px; }
  .about-inner          { grid-template-columns: 1fr; }
  .product-card__cover  { max-height: 240px; }
  .chapter-acc-body     { grid-template-columns: 1fr; padding-left: 50px; }
  .chapter-acc-img      { max-width: 320px; }
  .endorsements-grid    { grid-template-columns: repeat(2, 1fr); }
  .authors-grid         { grid-template-columns: repeat(2, 1fr); }
  .buy-inner            { grid-template-columns: 1fr; }
  .buy-cover            { display: none; }
  .free-chapter-card    { grid-template-columns: 1fr; }
  .more-grid            { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .authors-grid      { grid-template-columns: 1fr; }
  .endorsements-grid { grid-template-columns: 1fr; }
  .book-hero__content h1 { font-size: 2.2rem; }
  .chapter-acc-body  { padding-left: 30px; }
}

/* ---- shared additions for other publications ---- */
.chapter-acc-body--noimg { grid-template-columns: 1fr; }
.book-hero__cover img.is-wide { width: clamp(300px, 32vw, 460px); }
.movement-quote { max-width: 760px; margin: 0 auto; }
.movement-quote p { font-family: var(--font-serif); font-style: italic; font-size: clamp(1.05rem, 0.95rem + 0.5vw, 1.3rem); line-height: 1.65; color: var(--fg-1); margin: 0 0 20px; }
.movement-quote .attrib { font-family: var(--font-sans); font-style: normal; font-size: 14px; color: var(--fg-3); }
.media-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
@media (max-width: 900px) { .media-grid { grid-template-columns: 1fr; } }
.media-card { background: var(--bg-canvas); border: 1px solid var(--border-1); border-radius: var(--radius-2xl); padding: 28px; text-decoration: none; display: flex; flex-direction: column; gap: 10px; transition: box-shadow var(--duration-base) var(--ease-out), transform var(--duration-base) var(--ease-out); }
.media-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
.media-card h3 { font-family: var(--font-display); font-size: 16px; font-weight: var(--weight-bold); color: var(--fg-1); margin: 0; line-height: 1.35; }
.media-card p { font-size: 14px; line-height: 1.6; color: var(--fg-2); margin: 0; }
.media-card__cta { font-size: 13px; font-weight: var(--weight-semibold); color: var(--link); margin-top: auto; }
.themes-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
@media (max-width: 900px) { .themes-grid { grid-template-columns: 1fr; } }
.theme-card { background: var(--bg-subtle); border: 1px solid var(--border-1); border-radius: var(--radius-2xl); padding: 30px; }
.theme-card__num { font-family: var(--font-display); font-size: 12px; font-weight: var(--weight-bold); letter-spacing: 0.12em; color: var(--so-cyan-600); display: block; margin-bottom: 12px; }
.theme-card h3 { font-family: var(--font-display); font-size: 17px; font-weight: var(--weight-bold); color: var(--fg-1); margin: 0 0 10px; line-height: 1.3; }
.theme-card p { font-size: 14px; line-height: 1.7; color: var(--fg-2); margin: 0; }