/* ============================================================
   BOOK PAGE STYLESHEET
   ============================================================ */

/* ---- BOOK HERO ---- */
.book-hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
}
.book-hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.book-hero__gradient {
  position: absolute;
  inset: 0;
}
.book-hero--1 .book-hero__gradient {
  background: radial-gradient(ellipse 70% 70% at 30% 50%, #1a0e00 0%, #0d0b10 55%, #07060a 100%);
}
.book-hero--2 .book-hero__gradient {
  background: radial-gradient(ellipse 70% 70% at 70% 50%, #0a0014 0%, #0d0b10 55%, #07060a 100%);
}
.book-hero--3 .book-hero__gradient {
  background: radial-gradient(ellipse 70% 70% at 50% 30%, #001408 0%, #0d0b10 55%, #07060a 100%);
}
.book-hero__deco {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.book-hero__deco svg {
  width: 100%;
  height: 100%;
}

.book-hero__content {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
  padding-bottom: 80px;
  padding-top: 140px;
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 80px;
  align-items: end;
}

.book-hero__meta {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.book-hero__back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gold-dim);
  margin-bottom: 32px;
  transition: color var(--transition);
}
.book-hero__back:hover { color: var(--gold); }
.book-hero__back svg { transition: transform var(--transition); }
.book-hero__back:hover svg { transform: translateX(-3px); }

.book-hero__number-label {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--gold-dim);
  margin-bottom: 12px;
}
.book-hero__title {
  font-family: var(--font-serif);
  font-size: clamp(3rem, 6vw, 5.5rem);
  font-weight: 300;
  line-height: 1.1;
  color: var(--white);
  letter-spacing: 0.03em;
  margin-bottom: 20px;
}
.book-hero__title em {
  display: block;
  font-style: italic;
  color: var(--gold);
  font-weight: 400;
}
.book-hero__tags {
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  color: var(--text3);
  font-style: italic;
  margin-bottom: 32px;
}
.book-hero__desc {
  font-family: var(--font-serif);
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  font-style: italic;
  color: var(--text2);
  line-height: 1.7;
  max-width: 600px;
  margin-bottom: 40px;
}
.book-hero__btns {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  width: 100%;
}
.book-hero__cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 32px;
  background: var(--gold);
  color: var(--black);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  transition: var(--transition);
}
.book-hero__cta:hover {
  background: var(--gold2);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(201,162,39,0.3);
}

/* Big book cover mockup in hero */
.book-hero__cover {
  position: relative;
  width: 200px;
  height: 290px;
  margin-left: auto;
  transform: perspective(800px) rotateY(-12deg) rotateX(2deg);
  transform-style: preserve-3d;
  transition: transform 0.5s ease;
}
.book-hero__cover:hover {
  transform: perspective(800px) rotateY(-6deg) rotateX(1deg) translateY(-8px);
}
.book-hero__cover-face {
  width: 100%;
  height: 100%;
  position: absolute;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 28px 20px;
}
.book-hero--1 .book-hero__cover-face {
  background: linear-gradient(160deg, #1c0e00 0%, #100800 50%, #1a1000 100%);
  border: 1px solid #8b4900;
}
.book-hero--2 .book-hero__cover-face {
  background: linear-gradient(160deg, #0e0018 0%, #080010 50%, #100018 100%);
  border: 1px solid #5a0080;
}
.book-hero--3 .book-hero__cover-face {
  background: linear-gradient(160deg, #001a0a 0%, #000e06 50%, #001a0a 100%);
  border: 1px solid #006b30;
}
.book-hero__cover-face::before {
  content: '';
  position: absolute;
  inset: 10px;
  border: 1px solid currentColor;
  opacity: 0.2;
  pointer-events: none;
}
.book-hero--1 .book-hero__cover-face::before { color: #c97800; }
.book-hero--2 .book-hero__cover-face::before { color: #9020c0; }
.book-hero--3 .book-hero__cover-face::before { color: #00a845; }

.book-hero__cover-glyph {
  font-size: 4rem;
  margin-bottom: 16px;
}
.book-hero--1 .book-hero__cover-glyph { color: #c97800; filter: drop-shadow(0 0 12px rgba(201,120,0,0.4)); }
.book-hero--2 .book-hero__cover-glyph { color: #a030d0; filter: drop-shadow(0 0 12px rgba(160,48,208,0.4)); }
.book-hero--3 .book-hero__cover-glyph { color: #00a845; filter: drop-shadow(0 0 12px rgba(0,168,69,0.4)); }

.book-hero__cover-name {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 8px;
}
.book-hero--1 .book-hero__cover-name { color: #e8a860; }
.book-hero--2 .book-hero__cover-name { color: #c088e0; }
.book-hero--3 .book-hero__cover-name { color: #60c880; }

.book-hero__cover-sub {
  font-size: 0.58rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  line-height: 1.6;
}
.book-hero--1 .book-hero__cover-sub { color: #8b5900; }
.book-hero--2 .book-hero__cover-sub { color: #6010a0; }
.book-hero--3 .book-hero__cover-sub { color: #005828; }

.book-hero__spine {
  position: absolute;
  left: -16px;
  top: 0;
  bottom: 0;
  width: 16px;
  border-left: 1px solid;
  border-top: 1px solid;
  border-bottom: 1px solid;
}
.book-hero--1 .book-hero__spine {
  background: linear-gradient(90deg, #0e0600, #1c0e00);
  border-color: #8b4900;
}
.book-hero--2 .book-hero__spine {
  background: linear-gradient(90deg, #060010, #0e0018);
  border-color: #5a0080;
}
.book-hero--3 .book-hero__spine {
  background: linear-gradient(90deg, #000a04, #001a0a);
  border-color: #006b30;
}

/* ---- BOOK CONTENT ---- */
.book-content {
  padding: 80px 0;
}

/* ---- INTRO BLOCK ---- */
.book-intro {
  max-width: 760px;
  margin: 0 auto 80px;
  padding: 0 24px;
}
.book-intro__quote {
  font-family: var(--font-serif);
  font-size: clamp(1.15rem, 2.2vw, 1.45rem);
  font-style: italic;
  color: var(--text);
  line-height: 1.8;
  border-left: 2px solid var(--gold-dim);
  padding-left: 24px;
  margin-bottom: 32px;
}
.book-intro__quote-source {
  font-size: 0.76rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold-dim);
  margin-top: 12px;
  display: block;
}
.quote__liminal-def {
  font-family: var(--font-serif);
  font-size: clamp(1.15rem, 2.2vw, 1.45rem);
  font-style: italic;
  color: var(--text2);
  line-height: 1.8;
  border-left: 2px solid var(--gold-dim);
  padding: 16px 20px;
  margin: 20px 0;
  text-align: left;
  background: rgba(201, 162, 39, 0.04);
}
.quote__liminal-term {
  font-family: var(--font-serif);
  font-size: 1em;
  font-weight: 600;
  color: var(--gold);
  letter-spacing: 0.04em;
}
.book-intro__text {
  font-size: 0.97rem;
  color: var(--text2);
  line-height: 1.8;
  margin-bottom: 16px;
}

/* ---- FOR WHOM ---- */
.book-for-whom {
  background: var(--bg2);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 60px 0;
  margin-bottom: 80px;
}
.book-for-whom__inner {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 24px;
}
.book-for-whom__title {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  color: var(--gold);
  margin-bottom: 24px;
  letter-spacing: 0.04em;
}
.book-for-whom__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 16px;
}
.book-for-whom__item {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  font-size: 0.9rem;
  color: var(--text2);
  line-height: 1.6;
}
.book-for-whom__bullet {
  color: var(--gold);
  font-size: 0.7rem;
  margin-top: 5px;
  flex-shrink: 0;
}

/* ---- CONTENTS TABLE ---- */
.book-toc {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 24px;
}
.book-toc__title {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  color: var(--gold);
  margin-bottom: 40px;
  letter-spacing: 0.04em;
}
.book-toc__parts {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* Part accordion */
.toc-part {
  border: 1px solid var(--border);
  background: var(--bg2);
  overflow: hidden;
  transition: border-color var(--transition);
}
.toc-part:hover { border-color: var(--border2); }
.toc-part__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  cursor: pointer;
  user-select: none;
  gap: 16px;
}
.toc-part__header:hover .toc-part__toggle { color: var(--gold); }
.toc-part__label {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold-dim);
  margin-bottom: 4px;
}
.toc-part__name {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  color: var(--white);
  letter-spacing: 0.02em;
}
.toc-part__count {
  font-size: 0.74rem;
  color: var(--text3);
  white-space: nowrap;
}
.toc-part__toggle {
  color: var(--gold-dim);
  transition: transform var(--transition), color var(--transition);
  flex-shrink: 0;
}
.toc-part.open .toc-part__toggle {
  transform: rotate(180deg);
  color: var(--gold);
}
.toc-part__body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}
.toc-part.open .toc-part__body {
  max-height: 2000px;
}
.toc-part__chapters {
  border-top: 1px solid var(--border);
  padding: 16px 24px 20px;
  display: flex;
  flex-direction: column;
  gap: 0;
}
.toc-chapter {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 9px 0;
  border-bottom: 1px solid var(--border);
  transition: color var(--transition);
}
.toc-chapter:last-child { border-bottom: none; }
.toc-chapter:hover .toc-chapter__name { color: var(--gold); }
.toc-chapter__num {
  font-size: 0.7rem;
  color: var(--text3);
  font-weight: 600;
  letter-spacing: 0.08em;
  width: 32px;
  flex-shrink: 0;
}
.toc-chapter__name {
  font-size: 0.88rem;
  color: var(--text2);
  line-height: 1.4;
  transition: color var(--transition);
}
.toc-chapter--sub .toc-chapter__name {
  font-size: 0.8rem;
  color: var(--text3);
  padding-left: 16px;
}
.toc-chapter--sub .toc-chapter__num { color: var(--bg); }

/* ---- THEMES ---- */
.book-themes {
  max-width: 880px;
  margin: 80px auto 0;
  padding: 0 24px;
}
.book-themes__title {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  color: var(--gold);
  margin-bottom: 32px;
  letter-spacing: 0.04em;
}
.book-themes__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}
.book-theme {
  padding: 28px 24px;
  border: 1px solid var(--border);
  background: var(--bg3);
  transition: border-color var(--transition), transform var(--transition);
}
.book-theme:hover {
  border-color: var(--border2);
  transform: translateY(-3px);
}
.book-theme__icon {
  font-size: 1.6rem;
  margin-bottom: 12px;
}
.book-theme__name {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--gold);
  margin-bottom: 8px;
}
.book-theme__desc {
  font-size: 0.82rem;
  color: var(--text2);
  line-height: 1.6;
}

/* ---- NAVIGATION BETWEEN BOOKS ---- */
.book-nav {
  margin-top: 80px;
  padding: 60px 0;
  border-top: 1px solid var(--border);
  background: var(--bg2);
}
.book-nav__inner {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}
.book-nav__link {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 28px;
  border: 1px solid var(--border);
  background: var(--bg3);
  max-width: 340px;
  transition: border-color var(--transition), background var(--transition), transform var(--transition);
  flex: 1;
}
.book-nav__link:hover {
  border-color: var(--border2);
  background: var(--bg);
  transform: translateY(-2px);
}
.book-nav__link--next { flex-direction: row-reverse; text-align: right; }
.book-nav__link--back { text-align: left; }
.book-nav__link-label {
  font-size: 0.68rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text3);
  margin-bottom: 4px;
}
.book-nav__link-title {
  font-family: var(--font-serif);
  font-size: 1rem;
  color: var(--gold);
}
.book-nav__link-arrow {
  color: var(--gold-dim);
  font-size: 1.2rem;
  flex-shrink: 0;
}

/* ---- SPECIAL HERO OFFER ---- */
.book-hero__offer-sep {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 16px 0 12px;
  color: var(--text3);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.book-hero__offer-sep::before,
.book-hero__offer-sep::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}
.book-hero__offer-btn {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
  padding: 16px 24px;
  border: 1px solid var(--gold);
  background: linear-gradient(135deg, rgba(201,162,39,0.12) 0%, rgba(201,162,39,0.04) 100%);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.book-hero__offer-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(201,162,39,0.08);
  transform: translateX(-100%);
  transition: transform var(--transition);
}
.book-hero__offer-btn:hover::before { transform: translateX(0); }
.book-hero__offer-btn:hover {
  border-color: var(--gold2);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(201,162,39,0.2);
}
.book-hero__offer-btn-badge {
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  position: relative;
}
.book-hero__offer-btn-title {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  color: var(--white);
  line-height: 1.3;
  position: relative;
}
.book-hero__offer-btn-price {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--gold);
  position: relative;
  margin-top: 2px;
}

/* ---- SPECIAL OFFER BLOCK ---- */
.special-offer {
  padding: 80px 0;
  background: linear-gradient(135deg, #1a1000 0%, #0e0c04 50%, #1a1200 100%);
  border-top: 1px solid var(--gold-dim);
  border-bottom: 1px solid var(--gold-dim);
  position: relative;
  overflow: hidden;
}
.special-offer::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 60% at 50% 50%, rgba(201,162,39,0.06) 0%, transparent 70%);
  pointer-events: none;
}
.special-offer__inner {
  max-width: 640px;
  margin: 0 auto;
  padding: 0 24px;
  text-align: center;
  position: relative;
}
.special-offer__badge {
  display: inline-block;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--black);
  background: var(--gold);
  padding: 5px 16px;
  margin-bottom: 24px;
}
.special-offer__title {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 500;
  color: var(--gold);
  line-height: 1.2;
  margin-bottom: 10px;
  letter-spacing: 0.02em;
}
.special-offer__sub {
  font-size: 0.88rem;
  color: var(--text2);
  margin-bottom: 40px;
}
.special-offer__items {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 40px;
  text-align: left;
}
.special-offer__item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 16px 20px;
  border: 1px solid var(--border2);
  background: rgba(201,162,39,0.04);
}
.special-offer__item-icon {
  font-size: 1.4rem;
  flex-shrink: 0;
  margin-top: 2px;
}
.special-offer__item-title {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  color: var(--gold);
  margin-bottom: 4px;
}
.special-offer__item-desc {
  font-size: 0.82rem;
  color: var(--text2);
  line-height: 1.6;
}
.special-offer__price-block {
  margin-bottom: 28px;
}
.special-offer__price {
  font-family: var(--font-serif);
  font-size: 3.5rem;
  font-weight: 600;
  color: var(--gold);
  line-height: 1;
  margin-bottom: 8px;
}
.special-offer__price span {
  font-size: 2rem;
}
.special-offer__price-note {
  font-size: 0.78rem;
  color: var(--text3);
  letter-spacing: 0.06em;
}
.special-offer__btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 36px;
  background: var(--gold);
  color: var(--black);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  transition: var(--transition);
  margin-bottom: 14px;
}
.special-offer__btn:hover {
  background: var(--gold2);
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(201,162,39,0.3);
}
.special-offer__hint {
  font-size: 0.78rem;
  color: var(--text3);
}

/* ---- RESPONSIVE ---- */
@media (max-width: 900px) {
  .book-hero__content {
    grid-template-columns: 1fr;
  }
  .book-hero__cover {
    margin: 0 auto;
    transform: none;
  }
  .book-hero__cover:hover { transform: translateY(-4px); }
}
@media (max-width: 640px) {
  .book-hero { min-height: 80vh; }
  .book-nav__inner { flex-direction: column; }
  .book-nav__link { max-width: 100%; }
}

/* === Кнопка Читать бесплатно === */
.book-hero__cta--free {
  background: transparent;
  color: var(--gold);
  border: 1.5px solid var(--gold);
  box-shadow: inset 0 0 0 0 var(--gold);
  transition: all 0.3s ease;
}
.book-hero__cta--free:hover {
  background: var(--gold);
  color: var(--black);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(201,162,39,0.25);
}

/* === Кнопка Купить на Ridero (вторичная) === */
.book-hero__cta--secondary {
  background: transparent;
  color: var(--text2);
  border: 1px solid rgba(201,162,39,0.25);
  font-size: 0.72rem;
}
.book-hero__cta--secondary:hover {
  border-color: rgba(201,162,39,0.6);
  color: var(--gold);
  background: transparent;
  transform: translateY(-1px);
  box-shadow: none;
}