/* =========================================
   THE AI PROPHET — Landing Page Styles
   Palette: Deep midnight + antique gold
   Fonts: Cormorant Garamond (display) + Work Sans (body)
   ========================================= */

/* ---- TOKENS ---- */
:root {
  /* Type scale */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3.5rem);
  --text-3xl: clamp(2.5rem, 1rem + 4vw, 5rem);
  --text-hero: clamp(3.5rem, 1rem + 8vw, 9rem);

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1.25rem;
  --radius-full: 9999px;

  /* Transition */
  --transition: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  /* Fonts */
  --font-display: 'Cormorant Garamond', 'Georgia', serif;
  --font-body: 'Work Sans', 'Helvetica Neue', sans-serif;

  /* Content widths */
  --content-default: 1100px;
  --content-narrow: 680px;
}

/* ---- DARK MODE (default) ---- */
:root, [data-theme="dark"] {
  /* Midnight surfaces */
  --color-bg: #0b0b10;
  --color-surface: #10101a;
  --color-surface-2: #141422;
  --color-surface-offset: #1a1a2e;
  --color-border: #2a2a40;
  --color-divider: #222235;

  /* Text */
  --color-text: #e8e4d8;
  --color-text-muted: #8a8880;
  --color-text-faint: #4a4a5a;
  --color-text-inverse: #0b0b10;

  /* Gold accent */
  --color-primary: #c9a84c;
  --color-primary-hover: #dbb85f;
  --color-primary-active: #b8942d;
  --color-primary-glow: rgba(201, 168, 76, 0.15);
  --color-primary-border: rgba(201, 168, 76, 0.25);

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.4);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.5);
  --shadow-lg: 0 16px 48px rgba(0,0,0,0.6);
  --shadow-gold: 0 0 40px rgba(201, 168, 76, 0.12);
}

/* ---- LIGHT MODE ---- */
[data-theme="light"] {
  --color-bg: #f7f4ed;
  --color-surface: #f2ede3;
  --color-surface-2: #ede7d8;
  --color-surface-offset: #e8e0ce;
  --color-border: #d4c9b0;
  --color-divider: #ddd6c2;
  --color-text: #1a1610;
  --color-text-muted: #6b6050;
  --color-text-faint: #b0a898;
  --color-text-inverse: #f7f4ed;
  --color-primary: #8a5e1a;
  --color-primary-hover: #7a5015;
  --color-primary-active: #6a4210;
  --color-primary-glow: rgba(138, 94, 26, 0.1);
  --color-primary-border: rgba(138, 94, 26, 0.25);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.1);
  --shadow-lg: 0 16px 48px rgba(0,0,0,0.15);
  --shadow-gold: 0 0 40px rgba(138, 94, 26, 0.08);
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme]) {
    --color-bg: #f7f4ed;
    --color-surface: #f2ede3;
    --color-surface-2: #ede7d8;
    --color-surface-offset: #e8e0ce;
    --color-border: #d4c9b0;
    --color-divider: #ddd6c2;
    --color-text: #1a1610;
    --color-text-muted: #6b6050;
    --color-text-faint: #b0a898;
    --color-text-inverse: #f7f4ed;
    --color-primary: #8a5e1a;
    --color-primary-hover: #7a5015;
    --color-primary-active: #6a4210;
    --color-primary-glow: rgba(138, 94, 26, 0.1);
    --color-primary-border: rgba(138, 94, 26, 0.25);
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.1);
    --shadow-lg: 0 16px 48px rgba(0,0,0,0.15);
    --shadow-gold: 0 0 40px rgba(138, 94, 26, 0.08);
  }
}

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

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: var(--space-16);
}

body {
  min-height: 100dvh;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.65;
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; height: auto; }
ul[role="list"] { list-style: none; }

h1, h2, h3, h4 {
  text-wrap: balance;
  line-height: 1.1;
}
p, li {
  text-wrap: pretty;
  max-width: 68ch;
}

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

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

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

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ---- LAYOUT ---- */
.container {
  width: 100%;
  max-width: var(--content-default);
  margin-inline: auto;
  padding-inline: clamp(var(--space-5), 5vw, var(--space-16));
}

/* ---- TYPOGRAPHY UTILITIES ---- */
.section-label {
  display: inline-block;
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}

.section-title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 400;
  color: var(--color-text);
  line-height: 1.1;
  margin-bottom: var(--space-6);
}

.section-intro {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 56ch;
  line-height: 1.7;
}

.section-header-center {
  text-align: center;
  margin-bottom: var(--space-12);
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* ---- BUTTONS ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0.02em;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-text-inverse);
}
[data-theme="dark"] .btn-primary { color: #0b0b10; }
.btn-primary:hover { background: var(--color-primary-hover); transform: translateY(-1px); box-shadow: 0 8px 24px var(--color-primary-glow); }

.btn-ghost {
  background: transparent;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}
.btn-ghost:hover { border-color: var(--color-primary); color: var(--color-primary); transform: translateY(-1px); }

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 1px solid var(--color-primary-border);
}
.btn-outline:hover { background: var(--color-primary-glow); border-color: var(--color-primary); }

.btn-amazon {
  background: #f7c948;
  color: #16130a;
  border: 1px solid #f7c948;
  font-weight: 700;
}
.btn-amazon:hover {
  background: #ffd75e;
  border-color: #ffd75e;
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(247, 201, 72, 0.35);
}
.btn-amazon-secondary {
  background: transparent;
  color: #f7c948;
  border: 1.5px solid #f7c948;
  font-weight: 700;
}
.btn-amazon-secondary:hover {
  background: rgba(247, 201, 72, 0.12);
  transform: translateY(-1px);
}

.btn-download {
  background: var(--color-primary-glow);
  color: var(--color-primary);
  border: 1px solid var(--color-primary-border);
  padding: 0.6rem 1.1rem;
  font-size: var(--text-xs);
}
.btn-download:hover { background: var(--color-primary); color: var(--color-text-inverse); }
[data-theme="dark"] .btn-download:hover { color: #0b0b10; }

.btn-large { padding: 1rem 2rem; font-size: var(--text-base); }

/* ---- SITE HEADER ---- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--color-bg) 85%, transparent);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.site-header.scrolled {
  border-bottom-color: var(--color-divider);
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  padding: var(--space-4) clamp(var(--space-5), 5vw, var(--space-16));
  max-width: calc(var(--content-default) + clamp(var(--space-5), 5vw, var(--space-16)) * 2);
  margin-inline: auto;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-primary);
  flex-shrink: 0;
  transition: opacity var(--transition);
}
.logo:hover { opacity: 0.8; }
.logo-text {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 500;
  letter-spacing: 0.01em;
  color: var(--color-text);
}

.header-nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  margin-left: auto;
}
.header-nav a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  transition: color var(--transition);
}
.header-nav a:hover { color: var(--color-text); }
.nav-cta {
  background: var(--color-primary);
  color: var(--color-text-inverse) !important;
  padding: 0.45rem 1rem;
  border-radius: var(--radius-md);
  font-weight: 500;
}
[data-theme="dark"] .nav-cta { color: #0b0b10 !important; }
.nav-cta:hover { background: var(--color-primary-hover) !important; opacity: 1 !important; }

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px; height: 36px;
  border-radius: var(--radius-md);
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all var(--transition);
  flex-shrink: 0;
}
.theme-toggle:hover { color: var(--color-text); border-color: var(--color-primary); }

.mobile-menu-btn {
  display: none;
  align-items: center; justify-content: center;
  width: 36px; height: 36px;
  border-radius: var(--radius-md);
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all var(--transition);
}
.mobile-menu-btn:hover { color: var(--color-text); border-color: var(--color-primary); }

.mobile-nav {
  display: none;
  flex-direction: column;
  padding: var(--space-4) clamp(var(--space-5), 5vw, var(--space-16));
  border-top: 1px solid var(--color-divider);
  gap: var(--space-3);
}
.mobile-nav.open { display: flex; }
.mobile-nav-link {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  padding: var(--space-2) 0;
  transition: color var(--transition);
}
.mobile-nav-link:hover { color: var(--color-primary); }
.nav-cta-mobile {
  color: var(--color-primary) !important;
  font-weight: 500;
  border-top: 1px solid var(--color-divider);
  padding-top: var(--space-4) !important;
  margin-top: var(--space-2);
}

/* ---- HERO ---- */
.hero {
  position: relative;
  min-height: 95vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: var(--space-16);
  padding: clamp(var(--space-16), 10vh, var(--space-32)) clamp(var(--space-5), 5vw, var(--space-16));
  max-width: calc(var(--content-default) + clamp(var(--space-5), 5vw, var(--space-16)) * 2);
  margin-inline: auto;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.star-field {
  position: absolute;
  inset: 0;
}

.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.25;
}
.hero-orb-1 {
  width: 500px; height: 500px;
  background: radial-gradient(circle, #c9a84c, transparent 70%);
  top: -100px; right: 10%;
  animation: drift 12s ease-in-out infinite alternate;
}
.hero-orb-2 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, #4a3a8a, transparent 70%);
  bottom: 0; left: -100px;
  animation: drift 16s ease-in-out infinite alternate-reverse;
}

@keyframes drift {
  from { transform: translate(0, 0) scale(1); }
  to { transform: translate(40px, 30px) scale(1.05); }
}

.hero-content {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.hero-eyebrow {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-5);
}

.hero-title {
  font-family: var(--font-display);
  font-weight: 300;
  line-height: 1.0;
  letter-spacing: -0.01em;
  color: var(--color-text);
  margin-bottom: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: 0;
}
.hero-title-pre {
  font-style: italic;
  font-weight: 300;
  color: var(--color-text-muted);
  font-size: var(--text-2xl);
  letter-spacing: 0.04em;
  line-height: 1.2;
}
.hero-title-main {
  color: var(--color-text);
  font-size: var(--text-hero);
  line-height: 0.9;
  display: block;
}

.hero-subtitle {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-style: italic;
  color: var(--color-primary);
  margin-bottom: var(--space-5);
  font-weight: 400;
}

.hero-tagline {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-8);
  max-width: 52ch;
}

.hero-actions {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
  margin-bottom: var(--space-12);
}

.hero-scroll-hint {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  animation: float 3s ease-in-out infinite;
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(4px); }
}

/* ---- BOOK MOCKUP ---- */
.hero-book-visual {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: center;
  align-items: center;
}

.book-mockup {
  position: relative;
  width: 280px;
  transform: perspective(900px) rotateY(-10deg) rotateX(2deg);
  filter: drop-shadow(-20px 28px 48px rgba(0,0,0,0.75));
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1), filter 0.6s ease;
}
.book-mockup:hover {
  transform: perspective(900px) rotateY(-5deg) rotateX(1deg) translateY(-10px);
  filter: drop-shadow(-12px 36px 56px rgba(0,0,0,0.65));
}

.book-cover-img {
  width: 100%;
  display: block;
  border-radius: 3px 10px 10px 3px;
  border: 1px solid rgba(255,255,255,0.08);
}

.book-shadow {
  position: absolute;
  bottom: -24px; left: 8px; right: -4px;
  height: 32px;
  background: radial-gradient(ellipse, rgba(0,0,0,0.55), transparent 70%);
  filter: blur(10px);
}

/* Amazon button group in hero */
.hero-amazon-links {
  display: contents;
}

/* ---- PULL QUOTE ---- */
.pull-quote-section {
  background: linear-gradient(to bottom, var(--color-bg), var(--color-surface));
  border-block: 1px solid var(--color-divider);
  padding: clamp(var(--space-12), 6vw, var(--space-20)) 0;
}
.pull-quote-inner {
  max-width: var(--content-narrow);
  margin-inline: auto;
  padding-inline: clamp(var(--space-5), 5vw, var(--space-16));
  text-align: center;
}
.pull-quote p {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-style: italic;
  font-weight: 300;
  line-height: 1.35;
  color: var(--color-text);
  max-width: none;
  margin-bottom: var(--space-5);
}
.pull-quote footer {
  font-size: var(--text-sm);
  color: var(--color-primary);
  letter-spacing: 0.05em;
  font-family: var(--font-body);
  font-weight: 500;
}
.pull-quote cite { font-style: normal; }

/* ---- ABOUT ---- */
.about-section {
  padding: clamp(var(--space-16), 8vw, var(--space-32)) 0;
  background: var(--color-surface);
}
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(var(--space-10), 6vw, var(--space-20));
  align-items: start;
}
.about-text p {
  color: var(--color-text-muted);
  margin-bottom: var(--space-5);
  line-height: 1.75;
}
.about-text em { color: var(--color-text); font-style: italic; }

.about-facts {
  display: flex;
  gap: var(--space-8);
  margin-top: var(--space-8);
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-divider);
}
.fact-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.fact-number {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 500;
  color: var(--color-primary);
  line-height: 1;
}
.fact-label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.inset-quote {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-primary);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  margin-bottom: var(--space-6);
}
.quote-mark {
  color: var(--color-primary);
  opacity: 0.4;
  margin-bottom: var(--space-4);
}
.inset-quote p {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-style: italic;
  line-height: 1.55;
  color: var(--color-text);
  margin-bottom: var(--space-4);
  max-width: none;
}
.inset-quote-source {
  font-size: var(--text-xs);
  color: var(--color-primary);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-weight: 500;
}

.about-themes {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}
.theme-tag {
  font-size: var(--text-xs);
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-full);
  background: var(--color-primary-glow);
  border: 1px solid var(--color-primary-border);
  color: var(--color-primary);
  font-weight: 500;
  letter-spacing: 0.04em;
}

/* ---- CHAPTERS ---- */
.chapters-section {
  padding: clamp(var(--space-16), 8vw, var(--space-32)) 0;
  background: var(--color-bg);
}
.chapters-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
}
.chapter-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-7, 1.75rem);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.chapter-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--color-primary-glow), transparent);
  opacity: 0;
  transition: opacity var(--transition);
}
.chapter-card:hover {
  border-color: var(--color-primary-border);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.chapter-card:hover::before { opacity: 1; }

.chapter-featured {
  grid-column: span 1;
  background: linear-gradient(135deg, var(--color-surface-2) 0%, var(--color-surface) 100%);
  border-color: var(--color-primary-border);
}

.chapter-number {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 300;
  color: var(--color-primary);
  opacity: 0.5;
  line-height: 1;
}
.chapter-content h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: var(--space-3);
  line-height: 1.2;
}
.chapter-content p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.65;
  max-width: none;
}
.chapter-tag {
  display: inline-flex;
  align-items: center;
  margin-top: var(--space-4);
  font-size: var(--text-xs);
  padding: 0.3rem 0.7rem;
  border-radius: var(--radius-full);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.free-tag {
  background: var(--color-primary-glow);
  border: 1px solid var(--color-primary-border);
  color: var(--color-primary);
}
.chapter-link {
  display: inline-block;
  margin-top: var(--space-4);
  font-size: var(--text-sm);
  color: var(--color-primary);
  font-weight: 500;
  transition: opacity var(--transition);
}
.chapter-link:hover { opacity: 0.75; }

/* ---- DOWNLOAD ---- */
.download-section {
  padding: clamp(var(--space-16), 8vw, var(--space-32)) 0;
  background: var(--color-surface);
  position: relative;
  overflow: hidden;
}
.download-bg-orb {
  position: absolute;
  width: 600px; height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--color-primary-glow), transparent 70%);
  top: -200px; right: -200px;
  pointer-events: none;
}
.download-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(var(--space-10), 6vw, var(--space-20));
  align-items: center;
}
.download-text p {
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
  line-height: 1.7;
}
.download-note {
  font-style: italic;
  font-family: var(--font-display);
  font-size: var(--text-lg) !important;
  color: var(--color-text) !important;
  opacity: 0.7;
}
.download-chapter-list {
  list-style: none;
  margin: var(--space-4) 0 var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.download-chapter-list li {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  padding-left: var(--space-5);
  position: relative;
  max-width: none;
}
.download-chapter-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 12px;
  height: 1px;
  background: var(--color-primary);
  opacity: 0.7;
}
/* Single large download card */
.download-card-single {
  flex-direction: row;
  align-items: center;
}
.download-cards {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.download-card {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  transition: all var(--transition);
}
.download-card:hover {
  border-color: var(--color-primary-border);
  box-shadow: var(--shadow-gold);
  transform: translateY(-1px);
}
.download-card-icon {
  flex-shrink: 0;
  width: 48px; height: 48px;
  border-radius: var(--radius-lg);
  background: var(--color-primary-glow);
  border: 1px solid var(--color-primary-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
}
.download-card-text { flex: 1; min-width: 0; }
.download-card-text h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: 0.2rem;
  line-height: 1.2;
}
.download-card-text p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  max-width: none;
  margin-bottom: 0.3rem;
}
.download-meta {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  letter-spacing: 0.06em;
}

/* ---- BUY FULL PDF ---- */
.buy-pdf-section {
  padding: clamp(var(--space-16), 8vw, var(--space-32)) 0;
  background: var(--color-surface-2);
  border-block: 1px solid var(--color-divider);
}
.buy-pdf-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(var(--space-10), 6vw, var(--space-20));
  align-items: center;
}
.buy-pdf-text p {
  color: var(--color-text-muted);
  line-height: 1.75;
  margin-bottom: var(--space-5);
}
.buy-pdf-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-top: var(--space-2);
}
.buy-pdf-features li {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  padding-left: var(--space-6);
  position: relative;
  max-width: none;
}
.buy-pdf-features li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 14px;
  height: 1px;
  background: var(--color-primary);
}
.buy-pdf-card {
  background: var(--color-surface);
  border: 1px solid var(--color-primary-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  box-shadow: var(--shadow-gold);
}
.buy-pdf-card-top {
  display: flex;
  gap: var(--space-5);
  align-items: flex-start;
}
.buy-pdf-cover {
  width: 80px;
  border-radius: var(--radius-md);
  flex-shrink: 0;
  box-shadow: var(--shadow-md);
}
.buy-pdf-details h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: var(--space-1);
  line-height: 1.2;
}
.buy-pdf-author {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-1) !important;
  max-width: none;
}
.buy-pdf-format {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  letter-spacing: 0.06em;
  max-width: none;
  margin-bottom: var(--space-3) !important;
}
.buy-pdf-price {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: var(--space-2);
}
.buy-pdf-price .price-label {
  flex-basis: 100%;
}
.price-amount {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 500;
  color: var(--color-primary);
  line-height: 1;
}
.price-label {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  letter-spacing: 0.06em;
}
.price-amount-old {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 500;
  color: var(--color-text-muted);
  text-decoration: line-through;
  text-decoration-color: var(--color-primary);
  text-decoration-thickness: 3px;
  line-height: 1;
}
.price-reduced-note {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-primary);
  letter-spacing: 0.04em;
  margin: var(--space-1) 0 var(--space-3) !important;
  max-width: none;
}
.btn-buy-pdf {
  width: 100%;
  justify-content: center;
}
.btn-buy-pdf:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none !important;
}
.buy-pdf-note {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-align: center;
  max-width: none;
  line-height: 1.6;
}
.buy-pdf-divider {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-text-faint);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin: var(--space-1) 0;
}
.buy-pdf-divider::before,
.buy-pdf-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--color-divider);
}

@media (max-width: 900px) {
  .buy-pdf-inner { grid-template-columns: 1fr; }
}

/* ---- AMAZON RATING BAR ---- */
.amazon-rating-bar {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-primary-border);
  border-radius: var(--radius-xl);
  padding: var(--space-5) var(--space-8);
  margin-bottom: var(--space-10);
  flex-wrap: wrap;
}
.amazon-rating-score {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 500;
  color: var(--color-primary);
  line-height: 1;
}
.amazon-rating-stars {
  font-size: var(--text-lg);
  color: var(--color-primary);
  letter-spacing: 0.05em;
}
.amazon-rating-label {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  flex: 1;
}
.amazon-rating-link {
  font-size: var(--text-sm);
  color: var(--color-primary);
  font-weight: 500;
  white-space: nowrap;
  transition: opacity var(--transition);
}
.amazon-rating-link:hover { opacity: 0.7; }

/* ---- TESTIMONIALS ---- */
.testimonials-section {
  padding: clamp(var(--space-16), 8vw, var(--space-32)) 0;
  background: var(--color-bg);
}
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
}
.testimonial-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  transition: all var(--transition);
}
.testimonial-card:hover {
  border-color: var(--color-primary-border);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.testimonial-featured {
  grid-column: 1 / -1;
  background: linear-gradient(135deg, var(--color-surface-2), var(--color-surface));
  border-color: var(--color-primary-border);
  padding: var(--space-10);
}
.testimonial-featured blockquote p {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-style: italic;
  font-weight: 400;
}

.testimonial-top {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
}
.verified-badge {
  font-size: var(--text-xs);
  color: var(--color-primary);
  background: var(--color-primary-glow);
  border: 1px solid var(--color-primary-border);
  border-radius: var(--radius-full);
  padding: 0.2rem 0.6rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  white-space: nowrap;
}
.review-title {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 500;
  font-style: italic;
  color: var(--color-text);
  line-height: 1.3;
  margin-top: var(--space-1);
}
.stars {
  color: var(--color-primary);
  font-size: var(--text-sm);
  letter-spacing: 0.1em;
}
blockquote p {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
  max-width: none;
}
.testimonial-author {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-top: auto;
  padding-top: var(--space-5);
  border-top: 1px solid var(--color-divider);
}
.author-avatar {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--color-primary-glow);
  border: 1px solid var(--color-primary-border);
  color: var(--color-primary);
  font-size: var(--text-xs);
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.testimonial-author strong {
  display: block;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
}
.testimonial-author span {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

/* ---- AUTHOR ---- */
.author-section {
  padding: clamp(var(--space-16), 8vw, var(--space-32)) 0;
  background: var(--color-surface);
}
.author-grid {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: clamp(var(--space-10), 6vw, var(--space-20));
  align-items: start;
}
.author-portrait-frame {
  width: 100%;
  aspect-ratio: 3/4;
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-primary-border);
  overflow: hidden;
  box-shadow: var(--shadow-lg), 0 0 40px var(--color-primary-glow);
}
.author-portrait-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  display: block;
  filter: grayscale(20%) contrast(1.05);
  transition: filter 0.4s ease;
}
.author-portrait-frame:hover .author-portrait-img {
  filter: grayscale(0%) contrast(1.05);
}
.author-bio p {
  color: var(--color-text-muted);
  margin-bottom: var(--space-5);
  line-height: 1.75;
}
.author-bio em { font-style: italic; color: var(--color-text); }
.author-links {
  margin-top: var(--space-6);
  display: flex;
  gap: var(--space-4);
}
.author-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: #f7c948;
  font-weight: 700;
  transition: opacity var(--transition);
}
.author-link:hover { opacity: 0.7; }

/* ---- FINAL CTA ---- */
.final-cta-section {
  position: relative;
  padding: clamp(var(--space-20), 10vw, var(--space-32)) 0;
  background: var(--color-bg);
  overflow: hidden;
  text-align: center;
}
.final-cta-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.final-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
}
.final-orb-1 {
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(201,168,76,0.18), transparent 70%);
  top: -100px; left: 50%;
  transform: translateX(-50%);
}
.final-orb-2 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(74,58,138,0.2), transparent 70%);
  bottom: -100px; left: 20%;
}
.final-cta-inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-5);
}
.final-cta-title {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 300;
  font-style: italic;
  color: var(--color-text);
  max-width: none;
}
.final-cta-sub {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 52ch;
  line-height: 1.6;
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 300;
}
.final-cta-actions {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
  justify-content: center;
  margin-top: var(--space-4);
}
.final-cta-note {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  letter-spacing: 0.06em;
  max-width: none;
}

/* ---- FOOTER ---- */
.site-footer {
  padding: var(--space-8) 0;
  background: var(--color-surface);
  border-top: 1px solid var(--color-divider);
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-text-muted);
  font-size: var(--text-xs);
}
.footer-links {
  display: flex;
  gap: var(--space-6);
}
.footer-links a {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  transition: color var(--transition);
}
.footer-links a:hover { color: var(--color-primary); }

/* ---- FADE-IN ANIMATION ---- */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============ RESPONSIVE ============ */

@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: var(--space-16);
    padding-bottom: var(--space-16);
  }
  .hero-book-visual {
    order: -1;
  }
  .book-mockup {
    width: 200px;
  }

  .about-grid,
  .download-inner,
  .author-grid {
    grid-template-columns: 1fr;
  }
  .author-grid {
    grid-template-columns: 1fr;
  }
  .author-portrait-frame {
    width: 200px;
    aspect-ratio: 1;
    margin-inline: auto;
  }

  .chapters-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .chapter-featured { grid-column: span 1; }

  .testimonials-grid {
    grid-template-columns: 1fr;
  }
  .testimonial-featured { grid-column: span 1; }
  .testimonial-featured blockquote p { font-size: var(--text-lg); }

  .header-nav { display: none; }
  .mobile-menu-btn { display: flex; }
}

@media (max-width: 560px) {
  .chapters-grid { grid-template-columns: 1fr; }
  .chapter-featured { grid-column: span 1; }
  .hero-actions { flex-direction: column; width: 100%; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .final-cta-actions { flex-direction: column; width: 100%; }
  .final-cta-actions .btn { width: 100%; justify-content: center; }
  .about-facts { gap: var(--space-6); }
  .download-card { flex-wrap: wrap; }
  .br-desk { display: none; }
}

/* Padding utility for chapter-card */
.chapter-card { padding: 1.75rem; }