/* ============================================================
   THE WISE TRANSITION — Jan Cotten
   Authority Site Stylesheet
   © 2026 Jan Cotten
   ============================================================ */

:root {
  --cream: #FAF7F2;
  --warm-white: #FFFDF9;
  --parchment: #F2EBE0;
  --rust: #8B3A2A;
  --rust-dark: #6B2A1C;
  --rust-light: #A84B38;
  --gold: #C8922A;
  --gold-light: #E0AE50;
  --slate: #2C2C2C;
  --slate-mid: #4A4A4A;
  --slate-light: #6B6B6B;
  --border: #DDD4C5;
  --border-strong: #C5B8A4;

  --font-display: 'Cormorant Garamond', Georgia, serif;
  --font-body: 'Jost', system-ui, sans-serif;

  --radius: 2px;
  --radius-md: 4px;
  --max-width: 1200px;
  --section-gap: 100px;

  --transition: 220ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--slate);
  background-color: var(--warm-white);
  overflow-x: hidden;
}

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; border: none; background: none; font: inherit; }

p { margin-bottom: 1.1em; }
p:last-child { margin-bottom: 0; }

/* ============================================================
   UTILITIES
   ============================================================ */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 40px;
}

/* ============================================================
   NAVIGATION
   ============================================================ */
.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(250, 247, 242, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow var(--transition);
}

.site-nav.scrolled {
  box-shadow: 0 2px 24px rgba(44, 44, 44, 0.08);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 40px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-author {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 500;
  color: var(--rust);
  letter-spacing: 0.02em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--slate-mid);
  transition: color var(--transition);
}

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

.nav-cta {
  background: var(--rust) !important;
  color: white !important;
  padding: 8px 20px !important;
  font-size: 0.8rem !important;
  letter-spacing: 0.1em !important;
  border-radius: var(--radius) !important;
  transition: background var(--transition) !important;
}

.nav-cta:hover { background: var(--rust-dark) !important; }

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  padding: 120px 0 80px;
  background: var(--cream);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.hero-bg-pattern {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(ellipse 60% 50% at 20% 50%, rgba(139, 58, 42, 0.04) 0%, transparent 70%),
    radial-gradient(ellipse 50% 60% at 80% 30%, rgba(200, 146, 42, 0.05) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 40px;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 80px;
  align-items: center;
  width: 100%;
}

.hero-book-wrap {
  flex-shrink: 0;
}

.book-shadow-wrap {
  position: relative;
  display: inline-block;
}

.book-shadow-wrap::before {
  content: '';
  position: absolute;
  bottom: -20px;
  left: 50%;
  transform: translateX(-50%);
  width: 85%;
  height: 30px;
  background: rgba(44, 44, 44, 0.18);
  border-radius: 50%;
  filter: blur(12px);
  z-index: 0;
}

.book-cover-img {
  position: relative;
  width: 320px;
  height: auto;
  border-radius: 3px;
  box-shadow:
    -6px 6px 0px rgba(139, 58, 42, 0.15),
    0 20px 60px rgba(44, 44, 44, 0.25),
    0 4px 16px rgba(44, 44, 44, 0.12);
  z-index: 1;
  transform: perspective(800px) rotateY(4deg);
  transition: transform 0.6s ease;
}

.book-cover-img:hover {
  transform: perspective(800px) rotateY(0deg) scale(1.02);
}

.hero-text {
  animation: fadeSlideUp 0.8s ease both;
}

@keyframes fadeSlideUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

.hero-eyebrow {
  font-family: var(--font-body);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 20px;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(3.5rem, 6vw, 5.5rem);
  font-weight: 300;
  line-height: 1.05;
  color: var(--slate);
  letter-spacing: -0.01em;
  margin-bottom: 24px;
}

.hero-title em {
  font-style: italic;
  color: var(--rust);
}

.hero-subtitle {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 400;
  color: var(--slate-mid);
  margin-bottom: 8px;
  line-height: 1.5;
}

.hero-author {
  font-size: 0.9rem;
  color: var(--slate-light);
  margin-bottom: 28px;
  letter-spacing: 0.04em;
}

.hero-author strong {
  color: var(--rust);
  font-weight: 600;
}

.hero-divider {
  width: 60px;
  height: 2px;
  background: linear-gradient(90deg, var(--rust), var(--gold));
  margin-bottom: 24px;
}

.hero-tagline {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-style: italic;
  color: var(--slate-mid);
  line-height: 1.7;
  margin-bottom: 36px;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  font-family: var(--font-body);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  border-radius: var(--radius);
  transition: all var(--transition);
}

.btn-primary {
  background: var(--rust);
  color: white;
  box-shadow: 0 4px 16px rgba(139, 58, 42, 0.25);
}

.btn-primary:hover {
  background: var(--rust-dark);
  box-shadow: 0 6px 24px rgba(139, 58, 42, 0.35);
  transform: translateY(-1px);
}

.btn-ghost {
  border: 1.5px solid var(--border-strong);
  color: var(--slate-mid);
}

.btn-ghost:hover {
  border-color: var(--rust);
  color: var(--rust);
  background: rgba(139, 58, 42, 0.04);
}

.hero-scroll-hint {
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  color: var(--slate-light);
  font-size: 0.72rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  animation: fadeIn 1.2s ease 0.8s both;
}

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

.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(180deg, var(--rust), transparent);
  animation: scrollPulse 2s ease infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.4; transform: scaleY(0.8); }
  50% { opacity: 1; transform: scaleY(1); }
}

/* ============================================================
   AMAZON BUTTON
   ============================================================ */
.hero-amazon {
  margin-top: 24px;
  display: flex;
  justify-content: center;
}

.amazon-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: #232f3e;
  color: #fff;
  border: 2px solid #FF9900;
  border-radius: 6px;
  padding: 12px 22px;
  font-family: var(--font-body);
  font-size: .88rem;
  font-weight: 700;
  letter-spacing: .04em;
  text-decoration: none;
  transition: background .2s, box-shadow .2s, transform .2s;
}
.amazon-btn:hover {
  background: #FF9900;
  color: #111;
  box-shadow: 0 6px 20px rgba(255,153,0,.4);
  transform: translateY(-2px);
}
.amazon-btn-text { font-size: .88rem; font-weight: 700; white-space: nowrap; }
.amazon-logo { flex-shrink: 0; }
.amazon-arrow { flex-shrink: 0; color: #FF9900; transition: color .2s; }
.amazon-btn:hover .amazon-arrow { color: #111; }
.amazon-btn--dark { background: rgba(255,255,255,.06); border-color: #FF9900; }
.amazon-btn--dark:hover { background: #FF9900; color: #111; }

/* ============================================================
   PULL QUOTE
   ============================================================ */
.pull-quote-section {
  background: var(--rust);
  padding: 70px 40px;
}

.pull-quote-inner {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.pull-quote {
  border: none;
  padding: 0;
}

.pull-quote p {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 300;
  font-style: italic;
  color: white;
  line-height: 1.5;
  margin-bottom: 20px;
}

.pull-quote p::before { content: '\201C'; }
.pull-quote p::after { content: '\201D'; }

.pull-quote footer {
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.65);
}

.pull-quote cite { font-style: normal; }

/* ============================================================
   ABOUT THE BOOK
   ============================================================ */
.about-book {
  padding: var(--section-gap) 0;
  background: var(--warm-white);
}

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

.section-label {
  display: block;
  font-family: var(--font-body);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 16px;
}

.section-label--light { color: rgba(255, 255, 255, 0.7); }

h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 3.5vw, 3rem);
  font-weight: 400;
  line-height: 1.2;
  color: var(--slate);
  margin-bottom: 28px;
}

.about-text p {
  color: var(--slate-mid);
  font-size: 1.05rem;
  line-height: 1.75;
}

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

.about-stats {
  display: flex;
  gap: 40px;
  margin-top: 40px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}

.stat { text-align: center; }

.stat-number {
  display: block;
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 300;
  color: var(--rust);
  line-height: 1;
  margin-bottom: 4px;
}

.stat-label {
  display: block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--slate-light);
}

.theme-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin-top: 8px;
}

.theme-list li {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.theme-icon {
  flex-shrink: 0;
  color: var(--rust);
  font-size: 0.6rem;
  margin-top: 6px;
}

.theme-list strong {
  display: block;
  font-size: 1rem;
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--slate);
  margin-bottom: 2px;
}

.theme-list p {
  font-size: 0.9rem;
  color: var(--slate-mid);
  margin: 0;
  line-height: 1.55;
}

/* ============================================================
   CHAPTERS
   ============================================================ */
.chapters-section {
  padding: var(--section-gap) 0;
  background: var(--parchment);
}

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 60px;
}

.section-header--light h2,
.section-header--light .section-desc { color: white; }

.section-desc {
  font-size: 1.05rem;
  color: var(--slate-mid);
  line-height: 1.7;
  margin-top: 16px;
}

.chapters-grid {
  display: flex;
  flex-direction: column;
  gap: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: white;
}

.chapter-card {
  border-bottom: 1px solid var(--border);
  transition: background var(--transition);
}

.chapter-card:last-child { border-bottom: none; }

.chapter-header {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 28px 36px;
  text-align: left;
  transition: background var(--transition);
}

.chapter-header:hover {
  background: rgba(139, 58, 42, 0.03);
}

.chapter-header[aria-expanded="true"] {
  background: rgba(139, 58, 42, 0.04);
  border-bottom: 1px solid var(--border);
}

.chapter-header[aria-expanded="true"] .chapter-toggle {
  transform: rotate(180deg);
  color: var(--rust);
}

.chapter-meta {
  display: flex;
  align-items: flex-start;
  gap: 24px;
  flex: 1;
}

.chapter-num {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 300;
  color: var(--rust);
  opacity: 0.5;
  line-height: 1;
  flex-shrink: 0;
  min-width: 48px;
}

.chapter-header[aria-expanded="true"] .chapter-num { opacity: 1; }

.chapter-title {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 500;
  color: var(--slate);
  margin-bottom: 4px;
  line-height: 1.3;
}

.chapter-preview {
  font-size: 0.88rem;
  color: var(--slate-light);
  line-height: 1.5;
  margin: 0;
}

.chapter-toggle {
  flex-shrink: 0;
  color: var(--slate-light);
  transition: transform var(--transition), color var(--transition);
  margin-left: 20px;
}

.chapter-content {
  padding: 0 36px 40px 36px;
  background: rgba(250, 247, 242, 0.4);
}

.chapter-content[hidden] { display: none; }

.chapter-body {
  max-width: 760px;
  padding-top: 28px;
}

.chapter-lede {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-style: italic;
  color: var(--slate);
  line-height: 1.65;
  margin-bottom: 28px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--border);
}

.chapter-body p {
  font-size: 1.02rem;
  color: var(--slate-mid);
  line-height: 1.8;
}

.chapter-body h4 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--slate);
  margin: 36px 0 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}

.chapter-reflect {
  background: rgba(139, 58, 42, 0.04);
  border-left: 3px solid var(--rust);
  padding: 20px 24px;
  margin: 28px 0;
  border-radius: 0 var(--radius) var(--radius) 0;
}

.chapter-reflect p {
  font-family: var(--font-display);
  font-size: 1.05rem;
  color: var(--slate);
  margin: 0;
  line-height: 1.7;
}

/* ============================================================
   FAQ
   ============================================================ */
.faq-section {
  padding: var(--section-gap) 0;
  background: var(--slate);
}

.faq-section h2 { color: white; }

.faq-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  max-width: 1000px;
  margin: 0 auto;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.faq-item {
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  border-right: 1px solid rgba(255, 255, 255, 0.08);
}

.faq-item:nth-child(even) { border-right: none; }
.faq-item:nth-last-child(-n+2) { border-bottom: none; }

.faq-item summary {
  padding: 28px 32px;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.9);
  cursor: pointer;
  list-style: none;
  line-height: 1.4;
  transition: color var(--transition);
  position: relative;
  padding-right: 48px;
}

.faq-item summary::after {
  content: '+';
  position: absolute;
  right: 28px;
  top: 28px;
  font-size: 1.3rem;
  color: var(--gold);
  font-weight: 300;
  transition: transform var(--transition);
}

.faq-item[open] summary::after { content: '−'; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:hover { color: white; }

.faq-item p {
  padding: 0 32px 28px;
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.65);
  line-height: 1.75;
  margin: 0;
}

/* ============================================================
   AUTHOR
   ============================================================ */
.author-section {
  padding: var(--section-gap) 0;
  background: var(--warm-white);
}

.author-grid {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 70px;
  align-items: start;
}

.author-portrait-wrap { flex-shrink: 0; }

.author-portrait-placeholder {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--parchment), var(--border));
  border: 3px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
}

.portrait-initial {
  font-family: var(--font-display);
  font-size: 5rem;
  font-weight: 300;
  color: var(--rust);
  opacity: 0.6;
  line-height: 1;
}

.author-tagline {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-style: italic;
  color: var(--rust);
  margin-bottom: 24px;
  line-height: 1.4;
}

.author-bio p {
  font-size: 1rem;
  color: var(--slate-mid);
  line-height: 1.8;
}

.author-credentials {
  display: flex;
  gap: 40px;
  margin-top: 36px;
  padding-top: 28px;
  border-top: 1px solid var(--border);
  flex-wrap: wrap;
}

.credential-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.credential-item strong {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gold);
}

.credential-item span {
  font-size: 0.9rem;
  color: var(--slate-mid);
}

/* ============================================================
   CONTACT CTA / STRIP
   ============================================================ */
.contact-section {
  position: relative;
  padding: var(--section-gap) 0;
  background: var(--rust);
  overflow: hidden;
}

.contact-bg {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(ellipse 60% 80% at 80% 50%, rgba(200, 146, 42, 0.15) 0%, transparent 60%);
  pointer-events: none;
}

.contact-content {
  position: relative;
  text-align: center;
}

.contact-content h2 {
  color: white;
  font-size: clamp(2.5rem, 4vw, 3.8rem);
  margin-bottom: 20px;
}

.contact-content p {
  font-family: var(--font-display);
  font-size: 1.15rem;
  color: rgba(255, 255, 255, 0.8);
  max-width: 580px;
  margin: 0 auto 52px;
  line-height: 1.7;
}

.contact-cards {
  display: flex;
  gap: 24px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Base card style */
.contact-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-md);
  padding: 32px 40px;
  min-width: 220px;
  transition: all var(--transition);
  backdrop-filter: blur(4px);
}

.contact-card:hover {
  background: rgba(255, 255, 255, 0.18);
  border-color: rgba(255, 255, 255, 0.4);
  transform: translateY(-3px);
}

/* Static phone card — no hover lift, no pointer */
.contact-card--static {
  cursor: default;
}
.contact-card--static:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
  transform: none;
}

/* Email copy button card */
.contact-card--email {
  color: white;
  cursor: pointer;
  font-family: var(--font-body);
  text-align: center;
}
.contact-card--email.copied .contact-value {
  color: #FFD580;
  font-style: italic;
}

/* Amazon contact card */
.contact-card--amazon {
  background: rgba(255, 153, 0, 0.12);
  border-color: rgba(255, 153, 0, 0.35);
  justify-content: center;
  padding: 24px 32px;
}
.contact-card--amazon:hover {
  background: rgba(255, 153, 0, 0.22);
  border-color: rgba(255, 153, 0, 0.6);
}

.contact-icon { color: rgba(255, 255, 255, 0.7); }

.contact-label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.6);
}

.contact-value {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 500;
  color: white;
}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  background: var(--slate);
  padding: 40px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.footer-title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 2px;
}

.footer-author,
.footer-license {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.4);
}

.footer-right { text-align: right; }

.footer-right p {
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.4);
  margin-bottom: 4px;
}

.footer-right a {
  color: var(--gold-light);
  opacity: 0.7;
  transition: opacity var(--transition);
}

.footer-right a:hover { opacity: 1; }

/* ============================================================
   ANIMATIONS
   ============================================================ */
@keyframes fadeSlideUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

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

@keyframes scrollPulse {
  0%, 100% { opacity: 0.4; transform: scaleY(0.8); }
  50% { opacity: 1; transform: scaleY(1); }
}

/* ============================================================
   RESPONSIVE — 900px
   ============================================================ */
@media (max-width: 900px) {
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 48px;
  }

  .hero-book-wrap { display: flex; justify-content: center; }
  .book-cover-img { width: 240px; transform: none; }
  .hero-divider { margin: 0 auto 24px; }
  .hero-actions { justify-content: center; }
  .hero-amazon { text-align: center; }
  .hero-scroll-hint { display: none; }

  .about-grid { grid-template-columns: 1fr; gap: 48px; }
  .faq-grid { grid-template-columns: 1fr; }
  .faq-item { border-right: none; }
  .faq-item:nth-last-child(-n+2) { border-bottom: 1px solid rgba(255,255,255,0.08); }
  .faq-item:last-child { border-bottom: none; }

  .author-grid { grid-template-columns: 1fr; }
  .author-portrait-wrap { display: flex; justify-content: center; }

  .contact-cards { flex-direction: column; align-items: center; }

  .chapter-header { padding: 20px 24px; }
  .chapter-content { padding: 0 24px 32px; }
  .chapter-meta { gap: 16px; }

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

  .container { padding: 0 24px; }
}

/* ============================================================
   RESPONSIVE — 640px
   ============================================================ */
@media (max-width: 600px) {
  .nav-links a:not(.nav-cta) { display: none; }
  .nav-inner { padding: 0 20px; }

  .hero { padding: 90px 0 60px; }
  .hero-title { font-size: 2.8rem; }

  .about-stats { gap: 24px; flex-wrap: wrap; }
  .author-credentials { gap: 24px; }

  .chapter-num { font-size: 1.5rem; min-width: 36px; }
  .chapter-title { font-size: 1.1rem; }
  .chapter-preview { font-size: 0.82rem; }
}

/* ============================================================
   SCROLL FADE-IN TARGETS
   ============================================================ */
.reveal-ready {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal-ready.revealed {
  opacity: 1;
  transform: translateY(0);
}