/* ===================================
   БАЗОВЫЕ СТИЛИ И ПЕРЕМЕННЫЕ
=================================== */
:root {
  --bg-primary: #0d0d0f;
  --bg-secondary: #13131a;
  --bg-card: #1a1a24;
  --bg-card-hover: #20202e;
  --accent: #c9a84c;
  --accent-light: #e8c877;
  --accent-dark: #a0832c;
  --text-primary: #e8e0d0;
  --text-secondary: #a09888;
  --text-muted: #5a5248;
  --border: rgba(201, 168, 76, 0.15);
  --border-strong: rgba(201, 168, 76, 0.35);
  --red-accent: #8b2020;
  --red-light: #c94040;
  --font-serif: 'Playfair Display', 'PT Serif', Georgia, serif;
  --font-sans: 'PT Sans', system-ui, sans-serif;
  --shadow: 0 4px 24px rgba(0,0,0,0.5);
  --shadow-card: 0 8px 32px rgba(0,0,0,0.4);
  --radius: 4px;
  --radius-lg: 8px;
  --transition: 0.3s ease;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--accent-light);
}

/* ===================================
   УТИЛИТЫ
=================================== */
.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
}

.hidden {
  display: none !important;
}

/* ===================================
   НАВИГАЦИЯ
=================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: transparent;
  transition: background var(--transition), box-shadow var(--transition);
  padding: 16px 0;
}

.navbar.scrolled {
  background: rgba(13, 13, 15, 0.97);
  box-shadow: 0 2px 20px rgba(0,0,0,0.6);
  backdrop-filter: blur(12px);
  padding: 10px 0;
}

.nav-container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.nav-logo {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
}

.nav-logo:hover {
  color: var(--accent-light);
}

.nav-logo-icon {
  font-size: 1.1rem;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 28px;
  align-items: center;
}

.nav-link {
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
  font-weight: 700;
  transition: color var(--transition);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--accent);
  transition: width var(--transition);
}

.nav-link:hover,
.nav-link.active {
  color: var(--accent);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--accent);
  transition: all var(--transition);
}

/* ===================================
   HERO СЕКЦИЯ
=================================== */
.hero {
  min-height: 100vh;
  position: relative;
  display: flex;
  align-items: center;
  padding: 100px 0 80px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: 
    radial-gradient(ellipse at 30% 50%, rgba(139, 32, 32, 0.12) 0%, transparent 55%),
    radial-gradient(ellipse at 80% 20%, rgba(201, 168, 76, 0.06) 0%, transparent 45%),
    linear-gradient(180deg, #0a0a0c 0%, #0d0d0f 50%, #0a0a0c 100%);
}

.hero-noise {
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.04'/%3E%3C/svg%3E");
  background-size: 256px 256px;
  opacity: 0.6;
  pointer-events: none;
}

.hero-container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
  width: 100%;
}

.hero-badge {
  margin-bottom: 32px;
}

.stamp {
  display: inline-block;
  border: 2px solid var(--red-light);
  color: var(--red-light);
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 0.75rem;
  letter-spacing: 0.25em;
  padding: 4px 14px;
  text-transform: uppercase;
  opacity: 0.85;
  transform: rotate(-1.5deg);
}

.hero-content {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 64px;
  align-items: center;
}

.hero-book {
  display: flex;
  justify-content: center;
}

.hero-book-wrapper {
  position: relative;
  perspective: 800px;
}

.hero-book-img {
  width: 280px;
  border-radius: 3px 8px 8px 3px;
  box-shadow: 
    -8px 8px 40px rgba(0,0,0,0.7),
    4px 4px 20px rgba(201, 168, 76, 0.15);
  transform: rotateY(-8deg);
  transition: transform 0.5s ease, box-shadow 0.5s ease;
}

.hero-book-img:hover {
  transform: rotateY(-4deg) scale(1.02);
  box-shadow: 
    -12px 12px 50px rgba(0,0,0,0.8),
    6px 6px 30px rgba(201, 168, 76, 0.2);
}

.hero-book-shadow {
  position: absolute;
  bottom: -24px;
  left: 10%;
  right: 10%;
  height: 30px;
  background: radial-gradient(ellipse, rgba(0,0,0,0.6) 0%, transparent 70%);
  filter: blur(8px);
}

.hero-label {
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
  font-weight: 700;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.hero-title-accent {
  color: var(--accent);
}

.hero-author {
  font-size: 1.1rem;
  color: var(--text-secondary);
  font-style: italic;
  font-family: var(--font-serif);
  margin-bottom: 24px;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 24px;
}

.hero-meta-item {
  font-size: 0.8rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}

.hero-meta-item i {
  color: var(--accent);
}

.hero-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 36px;
  max-width: 540px;
}

.hero-cta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-scroll {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 0.72rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  animation: fadeInUp 1s ease 1.5s both;
}

.hero-scroll-arrow {
  width: 20px;
  height: 20px;
  border-right: 2px solid var(--accent);
  border-bottom: 2px solid var(--accent);
  transform: rotate(45deg);
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 100% { transform: rotate(45deg) translateY(0); }
  50% { transform: rotate(45deg) translateY(5px); }
}

/* ===================================
   КНОПКИ
=================================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: var(--radius);
  transition: all var(--transition);
  cursor: pointer;
  border: none;
  font-family: var(--font-sans);
}

.btn-primary {
  background: var(--accent);
  color: #0d0d0f;
}

.btn-primary:hover {
  background: var(--accent-light);
  color: #0d0d0f;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(201, 168, 76, 0.35);
}

.btn-secondary {
  background: transparent;
  color: var(--accent);
  border: 1.5px solid var(--accent);
}

.btn-secondary:hover {
  background: rgba(201, 168, 76, 0.1);
  color: var(--accent-light);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--text-secondary);
  border: 1.5px solid var(--border-strong);
}

.btn-outline:hover {
  color: var(--accent);
  border-color: var(--accent);
  transform: translateY(-2px);
}

/* ===================================
   ЦИТАТА / ВВЕДЕНИЕ
=================================== */
.intro-quote {
  padding: 48px 0;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.tape-line {
  height: 3px;
  background: repeating-linear-gradient(
    90deg,
    var(--red-accent) 0,
    var(--red-accent) 24px,
    transparent 24px,
    transparent 36px
  );
  margin: 16px 0;
  opacity: 0.6;
}

.quote-block {
  text-align: center;
  max-width: 680px;
  margin: 0 auto;
  padding: 16px 32px;
  position: relative;
}

.quote-mark {
  font-family: var(--font-serif);
  font-size: 4rem;
  color: var(--accent);
  line-height: 0.5;
  opacity: 0.4;
  display: block;
}

.quote-mark-close {
  text-align: right;
  transform: rotate(180deg);
  display: inline-block;
}

.quote-block p {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-style: italic;
  color: var(--text-secondary);
  line-height: 1.8;
  padding: 16px 0;
}

/* ===================================
   СЕКЦИИ
=================================== */
.section {
  padding: 80px 0;
}

.section-dark {
  background: var(--bg-secondary);
}

.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-label {
  font-size: 0.72rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--red-light);
  margin-bottom: 12px;
  font-weight: 700;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.section-line {
  width: 48px;
  height: 2px;
  background: var(--accent);
  margin: 0 auto;
}

/* ===================================
   О КНИГЕ
=================================== */
.about-book-grid {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 48px;
  margin-bottom: 56px;
  align-items: start;
}

.about-book-text p {
  color: var(--text-secondary);
  margin-bottom: 16px;
  line-height: 1.8;
}

.about-book-text .lead-text {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--text-primary);
  font-style: italic;
  line-height: 1.9;
}

.about-book-text strong {
  color: var(--text-primary);
}

.about-book-text em {
  color: var(--accent-light);
  font-style: italic;
}

.facts-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 20px;
}

.facts-card-title {
  font-family: var(--font-serif);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.facts-list {
  list-style: none;
}

.facts-list li {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  padding: 8px 0;
  border-bottom: 1px solid rgba(201, 168, 76, 0.08);
  font-size: 0.85rem;
}

.facts-list li:last-child {
  border-bottom: none;
}

.fact-label {
  color: var(--text-muted);
  white-space: nowrap;
  flex-shrink: 0;
}

.fact-value {
  color: var(--text-primary);
  text-align: right;
}

.rating-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  text-align: center;
}

.rating-number {
  font-family: var(--font-serif);
  font-size: 3rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
}

.rating-stars {
  color: var(--accent);
  font-size: 1rem;
  margin: 8px 0;
}

.rating-label {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.rating-ozon {
  margin-top: 12px;
  font-size: 0.82rem;
  color: var(--text-secondary);
  border-top: 1px solid var(--border);
  padding-top: 12px;
}

.rating-ozon i {
  color: var(--accent);
}

/* Особенности */
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 56px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 20px;
  text-align: center;
  transition: all var(--transition);
}

.feature-card:hover {
  border-color: var(--border-strong);
  transform: translateY(-4px);
  background: var(--bg-card-hover);
}

.feature-icon {
  font-size: 1.8rem;
  color: var(--accent);
  margin-bottom: 16px;
}

.feature-card h3 {
  font-family: var(--font-serif);
  font-size: 1rem;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* Хронология */
.timeline-block {
  max-width: 680px;
  margin: 0 auto;
}

.timeline-title {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  color: var(--accent);
  text-align: center;
  margin-bottom: 32px;
  letter-spacing: 0.05em;
}

.timeline {
  position: relative;
  padding-left: 32px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 8px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent), var(--accent-dark), var(--red-accent));
  opacity: 0.4;
}

.timeline-item {
  position: relative;
  padding-bottom: 28px;
  opacity: 0;
  transform: translateX(-20px);
  transition: all 0.5s ease;
}

.timeline-item.visible {
  opacity: 1;
  transform: translateX(0);
}

.timeline-dot {
  position: absolute;
  left: -28px;
  top: 4px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--bg-primary);
  box-shadow: 0 0 0 2px var(--accent-dark);
}

.timeline-dot-current {
  background: var(--red-light);
  box-shadow: 0 0 0 2px var(--red-accent), 0 0 12px rgba(201, 64, 64, 0.4);
}

.timeline-date {
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 700;
  margin-bottom: 6px;
}

.timeline-text {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ===================================
   АВТОР
=================================== */
.author-grid {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 56px;
  align-items: start;
}

.author-photo-block {
  position: sticky;
  top: 100px;
}

.author-photo-frame {
  position: relative;
  margin-bottom: 24px;
}

.author-photo {
  width: 100%;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  filter: sepia(20%) contrast(1.05);
}

.author-photo-label {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.85), transparent);
  color: var(--text-primary);
  font-family: var(--font-serif);
  font-size: 0.9rem;
  padding: 24px 16px 12px;
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

.author-badge-block {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.author-badge-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.82rem;
  color: var(--text-secondary);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 14px;
}

.author-badge-item i {
  color: var(--accent);
  margin-top: 2px;
  flex-shrink: 0;
}

.author-name {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.author-dates {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 32px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.author-dates i {
  color: var(--accent);
}

.bio-section {
  margin-bottom: 28px;
}

.bio-section h4 {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.bio-section p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 12px;
}

.bio-section strong {
  color: var(--text-primary);
}

.bio-section em {
  color: var(--accent-light);
  font-style: italic;
}

.author-publications h4 {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.author-publications p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

.author-publications strong {
  color: var(--text-primary);
}

/* ===================================
   ОТЗЫВЫ
=================================== */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 48px;
}

.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: all var(--transition);
}

.review-card:hover {
  border-color: var(--border-strong);
  transform: translateY(-4px);
  background: var(--bg-card-hover);
}

.review-featured {
  grid-column: span 2;
  border-color: var(--border-strong);
  background: linear-gradient(135deg, var(--bg-card), rgba(201, 168, 76, 0.04));
}

.review-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
}

.review-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 700;
  flex-shrink: 0;
  color: #0d0d0f;
}

.review-avatar-1 { background: var(--accent); }
.review-avatar-2 { background: #7a9f6a; }
.review-avatar-3 { background: #6a7aaf; }
.review-avatar-4 { background: #af6a7a; }
.review-avatar-5 { background: #6aaf9f; }
.review-avatar-6 { background: #9f6aaf; }

.review-name {
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--text-primary);
}

.review-source {
  font-size: 0.75rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 4px;
}

.review-stars {
  color: var(--accent);
  font-size: 0.75rem;
  margin-top: 3px;
}

.review-text {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
  font-style: italic;
}

.reviews-summary {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 40px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
}

.summary-item {
  display: flex;
  align-items: center;
  gap: 12px;
}

.summary-big {
  font-family: var(--font-serif);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--accent);
}

.summary-small {
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.summary-divider {
  width: 1px;
  height: 48px;
  background: var(--border);
}

/* ===================================
   ГДЕ КУПИТЬ
=================================== */
.buy-intro {
  text-align: center;
  margin-bottom: 32px;
}

.buy-intro p {
  color: var(--text-secondary);
  font-size: 1rem;
}

.buy-tabs {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 36px;
}

.buy-tab {
  background: transparent;
  border: 1.5px solid var(--border);
  color: var(--text-muted);
  padding: 10px 24px;
  border-radius: 100px;
  font-size: 0.85rem;
  font-weight: 700;
  font-family: var(--font-sans);
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: all var(--transition);
  display: flex;
  align-items: center;
  gap: 8px;
}

.buy-tab:hover {
  color: var(--text-primary);
  border-color: var(--border-strong);
}

.buy-tab.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #0d0d0f;
}

.shops-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.shop-card {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  color: var(--text-primary);
  transition: all var(--transition);
}

.shop-card:hover {
  border-color: var(--border-strong);
  transform: translateY(-3px);
  background: var(--bg-card-hover);
  color: var(--text-primary);
}

.shop-logo {
  width: 52px;
  height: 52px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  flex-shrink: 0;
  color: white;
}

.shop-logo-cg { background: #1a4a8a; }
.shop-logo-ozon { background: #005bff; }
.shop-logo-ast { background: #8a1a2a; }
.shop-logo-ym { background: #fc3f1d; }
.shop-logo-lab { background: #2a6a4a; }
.shop-logo-litres { background: #f26821; }

.shop-info {
  flex: 1;
}

.shop-name {
  font-weight: 700;
  font-size: 0.95rem;
  margin-bottom: 3px;
}

.shop-price {
  color: var(--accent);
  font-weight: 700;
  font-size: 0.9rem;
  margin-bottom: 3px;
}

.shop-note {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.shop-arrow {
  color: var(--text-muted);
  font-size: 0.8rem;
  transition: color var(--transition);
}

.shop-card:hover .shop-arrow {
  color: var(--accent);
}

.digital-note {
  background: rgba(201, 168, 76, 0.06);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 18px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.digital-note i {
  color: var(--accent);
  margin-top: 2px;
  flex-shrink: 0;
}

.buy-isbn {
  text-align: center;
  margin-top: 32px;
  padding: 20px;
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius);
}

.isbn-label {
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.isbn-value {
  font-family: 'Courier New', monospace;
  font-size: 1.2rem;
  color: var(--accent);
  letter-spacing: 0.1em;
  font-weight: 700;
}

/* ===================================
   ДРУГИЕ КНИГИ
=================================== */
.books-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 40px;
}

.book-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition);
}

.book-card:hover {
  border-color: var(--border-strong);
  transform: translateY(-6px);
  background: var(--bg-card-hover);
}

.book-card-cover {
  aspect-ratio: 3/4;
  max-height: 200px;
  background: linear-gradient(135deg, #1a1a24, #252535);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.book-card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  display: block;
  transition: transform 0.4s ease;
}

.book-card:hover .book-card-img {
  transform: scale(1.04);
}

.book-cover-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  color: var(--accent);
  opacity: 0.2;
  font-size: 3rem;
}

.book-cover-placeholder-2 { background: linear-gradient(135deg, #1a2030, #252540); }
.book-cover-placeholder-3 { background: linear-gradient(135deg, #201a1a, #352525); }
.book-cover-placeholder-4 { background: linear-gradient(135deg, #1a2020, #253535); }

.book-year {
  position: absolute;
  top: 10px;
  right: 10px;
  background: rgba(0,0,0,0.7);
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 100px;
  letter-spacing: 0.05em;
}

.book-card-info {
  padding: 20px;
}

.book-title {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
  line-height: 1.3;
}

.book-subtitle {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-style: italic;
  margin-bottom: 10px;
}

.book-desc {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 14px;
  display: -webkit-box;
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.book-meta-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: 8px;
}

.book-genre {
  font-size: 0.72rem;
  background: rgba(201, 168, 76, 0.1);
  color: var(--accent);
  padding: 2px 8px;
  border-radius: 100px;
}

.book-pages {
  font-size: 0.72rem;
  color: var(--text-muted);
}

.book-publishers {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 14px;
}

.book-link {
  font-size: 0.78rem;
  color: var(--accent);
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: color var(--transition);
}

.book-link:hover {
  color: var(--accent-light);
}

.all-books-link {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* ===================================
   FAQ
=================================== */
.faq-list {
  max-width: 760px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--border);
}

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

.faq-question {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 0;
  font-family: var(--font-serif);
  font-size: 0.98rem;
  color: var(--text-primary);
  font-weight: 600;
  line-height: 1.4;
  transition: color var(--transition);
}

.faq-question:hover {
  color: var(--accent);
}

.faq-icon {
  color: var(--accent);
  flex-shrink: 0;
  transition: transform var(--transition);
  font-size: 0.85rem;
}

.faq-item.open .faq-icon {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}

.faq-item.open .faq-answer {
  max-height: 400px;
}

.faq-answer p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.8;
  padding-bottom: 20px;
}

.faq-answer strong {
  color: var(--text-primary);
}

/* ===================================
   ИСТОЧНИКИ
=================================== */
.sources-section {
  background: var(--bg-primary);
}

.sources-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.source-card {
  display: flex;
  gap: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  transition: all var(--transition);
}

.source-card:hover {
  border-color: var(--border-strong);
  transform: translateY(-3px);
}

.source-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(201, 168, 76, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  flex-shrink: 0;
  font-size: 1rem;
}

.source-info h4 {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.source-info p {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 8px;
  line-height: 1.5;
}

.source-info a {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--accent);
}

.source-info a:hover {
  color: var(--accent-light);
}

/* ===================================
   ПОДВАЛ
=================================== */
.footer {
  background: #080808;
  border-top: 1px solid var(--border);
  padding: 56px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 40px;
}

.footer-logo {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 14px;
}

.footer-desc {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.7;
}

.footer-links-col h4 {
  font-size: 0.78rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
  font-weight: 700;
}

.footer-links-col ul {
  list-style: none;
}

.footer-links-col li {
  margin-bottom: 8px;
}

.footer-links-col a {
  font-size: 0.85rem;
  color: var(--text-muted);
  transition: color var(--transition);
}

.footer-links-col a:hover {
  color: var(--accent);
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.footer-bottom p {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ===================================
   КНОПКА НАВЕРХ
=================================== */
.scroll-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 44px;
  height: 44px;
  background: var(--accent);
  color: #0d0d0f;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: translateY(16px);
  transition: all var(--transition);
  z-index: 999;
  box-shadow: 0 4px 16px rgba(201, 168, 76, 0.4);
}

.scroll-top.visible {
  opacity: 1;
  transform: translateY(0);
}

.scroll-top:hover {
  background: var(--accent-light);
  transform: translateY(-3px);
}

/* ===================================
   АНИМАЦИИ
=================================== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.animate-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===================================
   АДАПТИВНОСТЬ
=================================== */
@media (max-width: 1024px) {
  .hero-content {
    grid-template-columns: 280px 1fr;
    gap: 40px;
  }

  .hero-book-img {
    width: 240px;
  }

  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .books-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .sources-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    flex-direction: column;
    gap: 0;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(13, 13, 15, 0.98);
    padding: 16px 24px 24px;
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(12px);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links li {
    border-bottom: 1px solid var(--border);
  }

  .nav-links li:last-child {
    border-bottom: none;
  }

  .nav-link {
    display: block;
    padding: 14px 0;
    font-size: 0.9rem;
  }

  .nav-toggle {
    display: flex;
  }

  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-book {
    order: -1;
    margin-bottom: 16px;
  }

  .hero-book-img {
    width: 200px;
    transform: rotateY(0);
    margin: 0 auto;
  }

  .hero-meta {
    justify-content: center;
  }

  .hero-desc {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-cta {
    justify-content: center;
  }

  .about-book-grid {
    grid-template-columns: 1fr;
  }

  .about-book-sidebar {
    order: -1;
  }

  .features-grid {
    grid-template-columns: 1fr 1fr;
  }

  .author-grid {
    grid-template-columns: 1fr;
  }

  .author-photo-block {
    position: static;
    display: flex;
    flex-direction: column;
    align-items: center;
  }

  .author-photo-frame {
    max-width: 280px;
    width: 100%;
  }

  .reviews-grid {
    grid-template-columns: 1fr;
  }

  .review-featured {
    grid-column: span 1;
  }

  .books-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .sources-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .reviews-summary {
    flex-direction: column;
    gap: 16px;
  }

  .summary-divider {
    width: 80px;
    height: 1px;
  }

  .scroll-top {
    bottom: 20px;
    right: 20px;
  }
}

@media (max-width: 480px) {
  .section {
    padding: 56px 0;
  }

  .hero {
    padding: 90px 0 60px;
  }

  .hero-title {
    font-size: 1.5rem;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .books-grid {
    grid-template-columns: 1fr;
  }

  .buy-tabs {
    flex-direction: column;
    align-items: center;
  }

  .shops-grid {
    grid-template-columns: 1fr;
  }

  .all-books-link {
    flex-direction: column;
    align-items: center;
  }

  .hero-cta {
    flex-direction: column;
    align-items: center;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }
}

/* ===================================
   СКРОЛЛБАР
=================================== */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--accent-dark);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--accent);
}

/* ===================================
   ВЫДЕЛЕНИЕ ТЕКСТА
=================================== */
::selection {
  background: rgba(201, 168, 76, 0.25);
  color: var(--text-primary);
}