/* ============================================
   DARK SEDUCTION BOOK THEME
   Premium, Cinematic, Mysterious
   ============================================ */

/* ---------- Google Fonts ---------- */
@import url('https://fonts.googleapis.com/css2?family=Bebas+Neue&family=Inter:wght@300;400;500;600;700&family=Poppins:wght@300;400;500;600;700&display=swap');

/* ---------- CSS Custom Properties ---------- */
:root {
  --bg-primary: #0D0D0F;
  --bg-secondary: #1A1A1D;
  --bg-card: #141416;
  --bg-card-hover: #1E1E22;
  --primary: #C1121F;
  --primary-hover: #E63946;
  --primary-glow: rgba(193, 18, 31, 0.4);
  --primary-glow-soft: rgba(193, 18, 31, 0.15);
  --accent: #C6A15B;
  --accent-hover: #D4B46A;
  --accent-glow: rgba(198, 161, 91, 0.3);
  --text-primary: #FFFFFF;
  --text-secondary: #BFBFBF;
  --text-muted: #6B6B6B;
  --border-subtle: rgba(255, 255, 255, 0.06);
  --border-glow: rgba(193, 18, 31, 0.2);

  --font-heading: 'Bebas Neue', 'Arial Black', sans-serif;
  --font-body: 'Inter', 'Poppins', sans-serif;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 60px rgba(193, 18, 31, 0.15);
  --shadow-glow-accent: 0 0 40px rgba(198, 161, 91, 0.1);

  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-medium: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ---------- Reset & Base ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background:
    radial-gradient(ellipse 80% 50% at 50% 0%, var(--primary-glow-soft) 0%, transparent 60%),
    radial-gradient(ellipse 60% 40% at 80% 100%, rgba(198, 161, 91, 0.05) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

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

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

ul,
ol {
  list-style: none;
}

::selection {
  background: var(--primary);
  color: var(--text-primary);
}

/* ---------- Scrollbar ---------- */
::-webkit-scrollbar {
  width: 8px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--primary);
  border-radius: 4px;
}

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

/* ---------- Typography ---------- */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

h1 {
  font-size: clamp(2.8rem, 7vw, 5.5rem);
}

h2 {
  font-size: clamp(2rem, 5vw, 3.8rem);
}

h3 {
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
}

h4 {
  font-size: clamp(1.2rem, 2.5vw, 1.8rem);
}

p {
  font-weight: 300;
  color: var(--text-secondary);
  line-height: 1.75;
}

.text-accent {
  color: var(--accent);
}

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

.text-gradient {
  background: linear-gradient(135deg, var(--primary), var(--primary-hover));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-gradient-gold {
  background: linear-gradient(135deg, var(--accent), #E8D5A3, var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ---------- Container ---------- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

.container-narrow {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 16px 40px;
  font-family: var(--font-heading);
  font-size: 1.2rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-medium);
  position: relative;
  overflow: hidden;
  text-decoration: none;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.15), transparent);
  transition: left 0.5s ease;
}

.btn:hover::before {
  left: 100%;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-hover));
  color: var(--text-primary);
  box-shadow: 0 4px 24px var(--primary-glow);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 40px var(--primary-glow), 0 0 80px rgba(193, 18, 31, 0.2);
}

.btn-primary:active {
  transform: translateY(-1px);
}

.btn-accent {
  background: linear-gradient(135deg, var(--accent), var(--accent-hover));
  color: var(--bg-primary);
  box-shadow: 0 4px 24px var(--accent-glow);
}

.btn-accent:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 40px var(--accent-glow), 0 0 80px rgba(198, 161, 91, 0.15);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-glow);
  backdrop-filter: blur(10px);
}

.btn-outline:hover {
  border-color: var(--primary);
  background: rgba(193, 18, 31, 0.1);
  transform: translateY(-2px);
  box-shadow: 0 4px 20px var(--primary-glow);
}

.btn-sm {
  padding: 12px 28px;
  font-size: 1rem;
}

.btn-lg {
  padding: 20px 56px;
  font-size: 1.4rem;
}

/* ---------- Navigation ---------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 20px 0;
  transition: all var(--transition-medium);
  background: transparent;
}

.navbar.scrolled {
  padding: 12px 0;
  background: rgba(13, 13, 15, 0.92);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  letter-spacing: 0.15em;
  color: var(--text-primary);
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-logo .logo-dot {
  width: 8px;
  height: 8px;
  background: var(--primary);
  border-radius: 50%;
  box-shadow: 0 0 12px var(--primary-glow);
  animation: pulse-glow 2s ease-in-out infinite;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav-links a {
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-secondary);
  position: relative;
  padding-bottom: 4px;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: width var(--transition-medium);
  box-shadow: 0 0 8px var(--primary-glow);
}

.nav-links a:hover {
  color: var(--text-primary);
}

.nav-links a:hover::after {
  width: 100%;
}

.nav-cta {
  font-size: 0.8rem !important;
  padding: 10px 24px !important;
  letter-spacing: 0.1em !important;
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 1001;
}

.menu-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: all var(--transition-fast);
  border-radius: 2px;
}

.menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ---------- Hero Section ---------- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding: 120px 0 80px;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, var(--primary-glow) 0%, transparent 70%);
  opacity: 0.3;
  animation: hero-glow 4s ease-in-out infinite alternate;
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 200px;
  background: linear-gradient(to top, var(--bg-primary), transparent);
  pointer-events: none;
  z-index: 1;
}

.hero-content {
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  background: rgba(193, 18, 31, 0.1);
  border: 1px solid rgba(193, 18, 31, 0.3);
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--primary-hover);
  margin-bottom: 28px;
}

.hero-badge .badge-dot {
  width: 6px;
  height: 6px;
  background: var(--primary);
  border-radius: 50%;
  animation: pulse-glow 1.5s ease-in-out infinite;
}

.hero h1 {
  margin-bottom: 20px;
  line-height: 1.05;
}

.hero h1 span {
  display: block;
}

.hero-subtitle {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: var(--text-secondary);
  margin-bottom: 44px;
  font-weight: 300;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 60px;
  margin-top: 80px;
  padding-top: 40px;
  border-top: 1px solid var(--border-subtle);
}

.hero-stat {
  text-align: center;
}

.hero-stat .stat-number {
  font-family: var(--font-heading);
  font-size: 2.6rem;
  color: var(--accent);
  display: block;
  line-height: 1;
}

.hero-stat .stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-top: 6px;
}

/* ---------- Section Styles ---------- */
.section {
  padding: 120px 0;
  position: relative;
}

.section-header {
  text-align: center;
  margin-bottom: 72px;
}

.section-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 16px;
}

.section-header h2 {
  margin-bottom: 16px;
}

.section-header p {
  max-width: 580px;
  margin: 0 auto;
  font-size: 1.05rem;
}

.section-divider {
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  margin: 20px auto 0;
  border-radius: 2px;
}

/* ---------- Book Cards (Homepage) ---------- */
.books-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 40px;
  align-items: stretch;
}

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

.book-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  opacity: 0;
  transition: opacity var(--transition-medium);
}

.book-card:hover {
  transform: translateY(-8px);
  border-color: var(--border-glow);
  box-shadow: var(--shadow-glow);
  background: var(--bg-card-hover);
}

.book-card:hover::before {
  opacity: 1;
}

.book-card-badge {
  position: absolute;
  top: 20px;
  right: 20px;
  padding: 6px 16px;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  border-radius: 50px;
  z-index: 5;
}

.badge-new {
  background: var(--primary);
  color: var(--text-primary);
  box-shadow: 0 4px 16px var(--primary-glow);
}

.badge-set {
  background: var(--accent);
  color: var(--bg-primary);
  box-shadow: 0 4px 16px var(--accent-glow);
}

.book-card-image {
  height: 400px;
  overflow: hidden;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(180deg, rgba(13, 13, 15, 0) 0%, rgba(13, 13, 15, 0.8) 100%),
    var(--bg-secondary);
}

.book-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.book-card:hover .book-card-image img {
  transform: scale(1.05);
}

.book-card-content {
  padding: 36px;
}

.book-card-content h3 {
  margin-bottom: 12px;
  transition: color var(--transition-fast);
}

.book-card:hover .book-card-content h3 {
  color: var(--primary-hover);
}

.book-card-content p {
  font-size: 0.95rem;
  margin-bottom: 24px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.book-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 20px;
  border-top: 1px solid var(--border-subtle);
}

.book-price {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  color: var(--accent);
}

.book-price .old-price {
  font-size: 1rem;
  color: var(--text-muted);
  text-decoration: line-through;
  margin-right: 8px;
}

/* ---------- Features Section ---------- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.feature-card {
  text-align: center;
  padding: 48px 32px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  transition: all var(--transition-medium);
  position: relative;
  overflow: hidden;
}

.feature-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 3px;
  background: var(--primary);
  transition: width var(--transition-medium);
}

.feature-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-glow);
  box-shadow: var(--shadow-glow);
}

.feature-card:hover::after {
  width: 60%;
}

.feature-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(193, 18, 31, 0.1);
  border-radius: var(--radius-md);
  font-size: 1.8rem;
  transition: all var(--transition-medium);
}

.feature-card:hover .feature-icon {
  background: rgba(193, 18, 31, 0.2);
  transform: scale(1.1);
  box-shadow: 0 0 30px var(--primary-glow);
}

.feature-card h4 {
  margin-bottom: 12px;
}

.feature-card p {
  font-size: 0.9rem;
}

/* ---------- About / Author Section ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.about-image {
  position: relative;
}

.about-image::before {
  content: '';
  position: absolute;
  top: -20px;
  left: -20px;
  right: 20px;
  bottom: 20px;
  border: 2px solid var(--primary);
  border-radius: var(--radius-lg);
  opacity: 0.3;
  z-index: -1;
}

.about-image img {
  width: 100%;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.about-content h2 {
  margin-bottom: 24px;
}

.about-content p {
  margin-bottom: 20px;
}

.about-quote {
  padding: 24px 28px;
  background: rgba(193, 18, 31, 0.06);
  border-left: 3px solid var(--primary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 32px 0;
  font-style: italic;
  color: var(--text-secondary);
}

/* ---------- Testimonials ---------- */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.testimonial-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 36px;
  transition: all var(--transition-medium);
}

.testimonial-card:hover {
  border-color: var(--border-glow);
  transform: translateY(-4px);
}

.testimonial-stars {
  color: var(--accent);
  font-size: 1rem;
  margin-bottom: 16px;
  letter-spacing: 4px;
}

.testimonial-text {
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: 24px;
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.testimonial-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-size: 1.1rem;
  color: var(--text-primary);
}

.testimonial-author-info .name {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-primary);
}

.testimonial-author-info .role {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ---------- FAQ Section ---------- */
.faq-list {
  max-width: 780px;
  margin: 0 auto;
}

.faq-item {
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  overflow: hidden;
  transition: all var(--transition-medium);
}

.faq-item:hover {
  border-color: var(--border-glow);
}

.faq-item.faq-open {
  border-color: var(--primary);
  box-shadow: 0 0 20px var(--primary-glow-soft);
}

.faq-question {
  width: 100%;
  padding: 22px 28px;
  background: var(--bg-card);
  border: none;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 500;
  text-align: left;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  transition: all var(--transition-fast);
}

.faq-question:hover {
  background: var(--bg-card-hover);
}

.faq-icon {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  color: var(--primary);
  transition: transform var(--transition-medium);
  flex-shrink: 0;
}

.faq-item.faq-open .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-medium);
}

.faq-answer-inner {
  padding: 0 28px 24px;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* ---------- CTA Section ---------- */
.cta-section {
  text-align: center;
  padding: 100px 0;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--primary-glow) 0%, transparent 60%);
  opacity: 0.2;
  pointer-events: none;
}

.cta-section h2 {
  margin-bottom: 20px;
}

.cta-section p {
  margin-bottom: 36px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

/* ---------- Footer ---------- */
.footer {
  padding: 60px 0 30px;
  border-top: 1px solid var(--border-subtle);
  background: rgba(13, 13, 15, 0.6);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 60px;
  margin-bottom: 48px;
}

.footer-brand .nav-logo {
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 0.9rem;
  max-width: 320px;
}

.footer-links h4 {
  font-size: 1rem;
  margin-bottom: 20px;
  color: var(--text-primary);
  letter-spacing: 0.15em;
}

.footer-links ul li {
  margin-bottom: 12px;
}

.footer-links ul li a {
  font-size: 0.88rem;
  color: var(--text-muted);
  transition: all var(--transition-fast);
}

.footer-links ul li a:hover {
  color: var(--primary-hover);
  padding-left: 4px;
}

.footer-bottom {
  text-align: center;
  padding-top: 28px;
  border-top: 1px solid var(--border-subtle);
}

.footer-bottom p {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ---------- Detail Page Styles ---------- */
.detail-hero {
  min-height: 90vh;
  display: flex;
  align-items: center;
  padding: 140px 0 80px;
  position: relative;
  overflow: hidden;
}

.detail-hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(ellipse 60% 50% at 20% 30%, var(--primary-glow-soft), transparent 60%),
    radial-gradient(ellipse 40% 40% at 80% 70%, rgba(198, 161, 91, 0.05), transparent 50%);
  pointer-events: none;
}

.detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.detail-image {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.detail-image img {
  width: 100%;
  max-width: 480px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card), var(--shadow-glow);
  transition: transform var(--transition-slow);
}

.detail-image:hover img {
  transform: scale(1.02) rotate(-1deg);
}

.detail-image .glow-ring {
  position: absolute;
  width: 120%;
  height: 120%;
  border: 1px solid rgba(193, 18, 31, 0.15);
  border-radius: 50%;
  animation: ring-pulse 3s ease-in-out infinite;
}

.detail-info .detail-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 18px;
  background: rgba(193, 18, 31, 0.1);
  border: 1px solid rgba(193, 18, 31, 0.3);
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--primary-hover);
  margin-bottom: 24px;
}

.detail-info h1 {
  margin-bottom: 20px;
}

.detail-info .detail-description {
  font-size: 1.1rem;
  margin-bottom: 32px;
  line-height: 1.8;
}

.detail-meta {
  display: flex;
  gap: 32px;
  margin-bottom: 36px;
  flex-wrap: wrap;
}

.detail-meta-item {
  display: flex;
  align-items: center;
  gap: 10px;
}

.detail-meta-item .meta-icon {
  font-size: 1.2rem;
}

.detail-meta-item .meta-text {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.detail-meta-item .meta-text strong {
  color: var(--text-primary);
  display: block;
  font-weight: 600;
}

.detail-price-box {
  display: flex;
  align-items: center;
  gap: 24px;
  margin-bottom: 36px;
  padding: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
}

.detail-price {
  font-family: var(--font-heading);
  font-size: 2.8rem;
  color: var(--accent);
  line-height: 1;
}

.detail-price-old {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  color: var(--text-muted);
  text-decoration: line-through;
}

.detail-price-saving {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--primary-hover);
  background: rgba(193, 18, 31, 0.1);
  padding: 4px 14px;
  border-radius: 50px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

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

/* Content Sections (Detail Page) */
.content-section {
  padding: 100px 0;
}

.content-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.content-grid.reversed {
  direction: rtl;
}

.content-grid.reversed>* {
  direction: ltr;
}

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

.chapter-list li {
  padding: 18px 24px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 16px;
  transition: all var(--transition-medium);
  font-size: 0.95rem;
}

.chapter-list li:hover {
  border-color: var(--border-glow);
  transform: translateX(8px);
  background: var(--bg-card-hover);
}

.chapter-number {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  color: var(--primary);
  min-width: 40px;
}

.chapter-title {
  color: var(--text-primary);
  font-weight: 500;
}

/* Set Items */
.set-items-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.set-item {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 32px;
  text-align: center;
  transition: all var(--transition-medium);
  position: relative;
  overflow: hidden;
}

.set-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  opacity: 0;
  transition: opacity var(--transition-medium);
}

.set-item:hover {
  transform: translateY(-6px);
  border-color: var(--border-glow);
  box-shadow: var(--shadow-glow);
}

.set-item:hover::before {
  opacity: 1;
}

.set-item-icon {
  font-size: 2.4rem;
  margin-bottom: 16px;
}

.set-item h4 {
  margin-bottom: 10px;
}

.set-item p {
  font-size: 0.88rem;
}

/* ---------- Animations ---------- */
@keyframes pulse-glow {

  0%,
  100% {
    opacity: 1;
    box-shadow: 0 0 8px var(--primary-glow);
  }

  50% {
    opacity: 0.5;
    box-shadow: 0 0 16px var(--primary-glow);
  }
}

@keyframes hero-glow {
  0% {
    transform: translateX(-50%) scale(1);
    opacity: 0.2;
  }

  100% {
    transform: translateX(-50%) scale(1.2);
    opacity: 0.4;
  }
}

@keyframes ring-pulse {

  0%,
  100% {
    transform: scale(0.95);
    opacity: 0.3;
  }

  50% {
    transform: scale(1.05);
    opacity: 0.1;
  }
}

@keyframes float-up {
  0% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-10px);
  }

  100% {
    transform: translateY(0);
  }
}

@keyframes fade-in-up {
  from {
    opacity: 0;
    transform: translateY(40px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slide-in-left {
  from {
    opacity: 0;
    transform: translateX(-60px);
  }

  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slide-in-right {
  from {
    opacity: 0;
    transform: translateX(60px);
  }

  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes scale-in {
  from {
    opacity: 0;
    transform: scale(0.9);
  }

  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* Scroll Animation Classes */
.reveal {
  opacity: 0;
  transform: translateY(50px);
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

.reveal-left {
  opacity: 0;
  transform: translateX(-60px);
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal-left.active {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(60px);
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal-right.active {
  opacity: 1;
  transform: translateX(0);
}

.reveal-scale {
  opacity: 0;
  transform: scale(0.85);
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal-scale.active {
  opacity: 1;
  transform: scale(1);
}

.stagger-1 {
  transition-delay: 0.1s;
}

.stagger-2 {
  transition-delay: 0.2s;
}

.stagger-3 {
  transition-delay: 0.3s;
}

.stagger-4 {
  transition-delay: 0.4s;
}

.stagger-5 {
  transition-delay: 0.5s;
}

.stagger-6 {
  transition-delay: 0.6s;
}

/* ---------- Parallax Overlay Shapes ---------- */
.floating-shape {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
}

.shape-red {
  background: var(--primary);
  opacity: 0.03;
  filter: blur(80px);
}

.shape-gold {
  background: var(--accent);
  opacity: 0.03;
  filter: blur(60px);
}

/* ---------- Back to Top ---------- */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 1.2rem;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--transition-medium);
  z-index: 999;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--primary);
  color: var(--text-primary);
  transform: translateY(-4px);
  box-shadow: 0 0 30px var(--primary-glow);
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .books-grid {
    grid-template-columns: 1fr;
    max-width: 560px;
    margin: 0 auto;
  }

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

  .about-grid,
  .detail-grid,
  .content-grid,
  .content-grid.reversed {
    grid-template-columns: 1fr;
    gap: 48px;
    direction: ltr;
  }

  .detail-image {
    order: -1;
  }

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

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }

  .hero-stats {
    gap: 40px;
  }

  .set-items-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .menu-toggle {
    display: flex;
  }

  .nav-links {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(13, 13, 15, 0.97);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 32px;
    backdrop-filter: blur(20px);
  }

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

  .nav-links a {
    font-size: 1.2rem;
  }

  .hero {
    padding: 100px 0 60px;
    min-height: auto;
  }

  .hero-stats {
    flex-direction: column;
    gap: 24px;
    align-items: center;
  }

  .section {
    padding: 80px 0;
  }

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

  .detail-meta {
    flex-direction: column;
    gap: 16px;
  }

  .detail-price-box {
    flex-wrap: wrap;
    gap: 12px;
  }

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

  .set-items-grid {
    grid-template-columns: 1fr;
  }

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

  .detail-cta-group {
    flex-direction: column;
  }
}

@media (max-width: 480px) {
  html {
    font-size: 14px;
  }

  .container {
    padding: 0 16px;
  }

  .btn {
    width: 100%;
    text-align: center;
  }

  .book-card-content {
    padding: 24px;
  }

  .book-card-image {
    height: 280px;
  }
}

/* ---------- WooCommerce Add-to-Cart Loading ---------- */
.ds-spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: ds-spin 0.6s linear infinite;
  vertical-align: middle;
  margin-right: 8px;
}

@keyframes ds-spin {
  to {
    transform: rotate(360deg);
  }
}

.ds-loading {
  opacity: 0.85;
  cursor: wait !important;
}

.ds-loading::before {
  display: none !important;
}