/* ============================================
   Design Tokens — Derived from book cover
   Deep navy starfield + gold/amber + cream
   ============================================ */

:root,
[data-theme='dark'] {
  /* Surfaces — deep navy from cover */
  --color-bg: #050d26;
  --color-surface: #0a1438;
  --color-surface-2: #0e1a44;
  --color-surface-offset: #122050;
  --color-divider: #1a2858;
  --color-border: #243468;

  /* Text — cream from cover */
  --color-text: #e8e0d0;
  --color-text-muted: #a8a498;
  --color-text-faint: #6a6e80;
  --color-text-inverse: #050d26;

  /* Primary — gold from cover */
  --color-primary: #fbb03b;
  --color-primary-hover: #fdc55e;
  --color-primary-active: #e8a530;

  /* Accent — lighter blue for dark mode */
  --color-accent: #4a8fde;
  --color-accent-hover: #6aa8e8;

  /* Semantic */
  --color-error: #dd6974;
  --color-success: #6daa45;

  /* Fonts */
  --font-display: 'Instrument Serif', Georgia, 'Times New Roman', serif;
  --font-body: 'Work Sans', 'Helvetica Neue', Arial, sans-serif;

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

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

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
  --shadow-cover: 0 20px 60px rgba(0, 0, 0, 0.5), 0 8px 24px rgba(0, 0, 0, 0.3);

  /* Content widths */
  --content-narrow: 640px;
  --content-default: 960px;
  --content-wide: 1200px;

  /* Type Scale — large but balanced */
  --text-xs: clamp(0.95rem, 0.9rem + 0.25vw, 1.1rem);
  --text-sm: clamp(1.1rem, 1.03rem + 0.35vw, 1.25rem);
  --text-base: clamp(1.3rem, 1.25rem + 0.25vw, 1.5rem);
  --text-lg: clamp(1.6rem, 1.45rem + 0.75vw, 2.05rem);
  --text-xl: clamp(2.05rem, 1.7rem + 1.25vw, 3rem);
  --text-2xl: clamp(2.8rem, 1.9rem + 2.5vw, 4.75rem);
  --text-3xl: clamp(3.5rem, 1.9rem + 4.5vw, 7rem);
  --text-hero: clamp(4rem, 1.25rem + 7.5vw, 10.5rem);

  /* 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;
}

[data-theme='light'] {
  /* Surfaces — warm cream, matching the cover's cream text */
  --color-bg: #faf8f3;
  --color-surface: #f5f2eb;
  --color-surface-2: #efebe2;
  --color-surface-offset: #e8e3d8;
  --color-divider: #d8d2c5;
  --color-border: #ccc5b5;

  /* Text — deep navy from cover background */
  --color-text: #1a1f3a;
  --color-text-muted: #5a5e7a;
  --color-text-faint: #9a9ba8;
  --color-text-inverse: #f5f2eb;

  /* Primary — gold/amber from cover title */
  --color-primary: #c8861a;
  --color-primary-hover: #a87014;
  --color-primary-active: #8a5c10;

  /* Accent — deep navy */
  --color-accent: #1c4a96;
  --color-accent-hover: #163d7a;

  --color-error: #a13544;
  --color-success: #437a22;

  --shadow-sm: 0 1px 3px rgba(10, 13, 38, 0.08);
  --shadow-md: 0 4px 16px rgba(10, 13, 38, 0.1);
  --shadow-lg: 0 16px 48px rgba(10, 13, 38, 0.15);
  --shadow-cover: 0 20px 60px rgba(10, 13, 38, 0.25), 0 8px 24px rgba(10, 13, 38, 0.15);
}

/* Dark navy is the default theme. Light is optional via toggle. */

/* ============================================
   Base
   ============================================ */

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

html {
  -webkit-text-size-adjust: none;
  text-size-adjust: none;
  -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;
  line-height: 1.65;
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 400;
  color: var(--color-text);
  background-color: var(--color-bg);
  transition: background-color 400ms ease, color 400ms ease;
}

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

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

a:hover {
  color: var(--color-primary-hover);
}

h1, h2, h3, h4, h5, h6 {
  text-wrap: balance;
  line-height: 1.15;
  font-family: var(--font-display);
  font-weight: 400;
}

p, li {
  text-wrap: pretty;
  max-width: 72ch;
}

::selection {
  background: rgba(251, 176, 59, 0.25);
  color: var(--color-text);
}

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

button {
  cursor: pointer;
  background: none;
  border: none;
  font: inherit;
  color: inherit;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* ============================================
   Layout
   ============================================ */

.container {
  max-width: var(--content-default);
  margin: 0 auto;
  padding-inline: var(--space-6);
}

.container.narrow {
  max-width: var(--content-narrow);
}

/* ============================================
   Header
   ============================================ */

.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in oklab, var(--color-bg) 90%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-divider);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.header--hidden {
  transform: translateY(-100%);
}

.header--scrolled {
  box-shadow: var(--shadow-sm);
}

.header-inner {
  max-width: var(--content-wide);
  margin: 0 auto;
  padding: var(--space-4) var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-text);
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 400;
  letter-spacing: 0.01em;
}

.logo:hover {
  color: var(--color-primary);
}

.logo svg {
  color: var(--color-primary);
}

.nav {
  display: flex;
  gap: var(--space-6);
}

.nav a {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

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

.nav a.active {
  color: var(--color-primary);
}

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
  transition: color var(--transition-interactive), background var(--transition-interactive);
}

.theme-toggle:hover {
  color: var(--color-primary);
  background: var(--color-surface-offset);
}

/* ============================================
   Hero
   ============================================ */

.hero {
  position: relative;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  overflow-x: clip;
  padding: var(--space-20) var(--space-6);
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.stars {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(1.5px 1.5px at 20% 30%, rgba(251, 176, 59, 0.8), transparent),
    radial-gradient(1px 1px at 60% 20%, rgba(255, 255, 255, 0.6), transparent),
    radial-gradient(1px 1px at 80% 60%, rgba(251, 176, 59, 0.5), transparent),
    radial-gradient(1.5px 1.5px at 40% 70%, rgba(255, 255, 255, 0.5), transparent),
    radial-gradient(1px 1px at 15% 80%, rgba(251, 176, 59, 0.6), transparent),
    radial-gradient(1px 1px at 90% 40%, rgba(255, 255, 255, 0.4), transparent),
    radial-gradient(1px 1px at 50% 50%, rgba(251, 176, 59, 0.3), transparent),
    radial-gradient(1.5px 1.5px at 70% 85%, rgba(255, 255, 255, 0.5), transparent),
    radial-gradient(1px 1px at 30% 15%, rgba(255, 255, 255, 0.4), transparent),
    radial-gradient(1px 1px at 85% 75%, rgba(251, 176, 59, 0.4), transparent);
  background-size: 100% 100%;
  background-repeat: no-repeat;
}

[data-theme='dark'] .stars,
:root:not([data-theme]) .stars {
  opacity: 1;
}

[data-theme='light'] .stars {
  opacity: 0.3;
}

.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 70% 40%, rgba(28, 74, 150, 0.15), transparent 60%);
  z-index: 0;
  pointer-events: none;
}

[data-theme='light'] .hero::after {
  background: radial-gradient(ellipse at 70% 40%, rgba(28, 74, 150, 0.08), transparent 60%);
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  justify-content: center;
  gap: var(--space-6);
  width: 100%;
}

.hero-text {
  max-width: 640px;
  width: 100%;
}

.hero-eyebrow {
  font-size: var(--text-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}

.hero-title {
  font-size: var(--text-3xl);
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-6);
}

.hero-subtitle {
  font-size: var(--text-lg);
  font-weight: 400;
  line-height: 1.5;
  color: var(--color-text-muted);
  max-width: 28ch;
  margin-inline: auto;
  margin-bottom: var(--space-10);
}

.hero-cta {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
  justify-content: center;
}

.hero-cover {
  width: 400px;
  flex-shrink: 0;
}

.hero-cover img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-cover);
}

/* ============================================
   Buttons
   ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-3) var(--space-8);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  white-space: nowrap;
  border-radius: var(--radius-full);
  transition: all var(--transition-interactive);
  cursor: pointer;
  text-decoration: none;
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-bg);
  border: 2px solid var(--color-primary);
}

.btn-primary:hover {
  background: var(--color-primary-hover);
  color: var(--color-bg);
  border-color: var(--color-primary-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text);
  border: 2px solid var(--color-border);
}

.btn-ghost:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* ============================================
   Book Section
   ============================================ */

.book-section {
  padding-block: clamp(var(--space-20), 12vw, var(--space-32));
  background: var(--color-surface);
}

.book-layout {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-16);
  align-items: start;
}

.book-cover-side img {
  width: 400px;
  max-width: 100%;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-cover);
  position: sticky;
  top: var(--space-20);
}

.book-text-side {
  max-width: 60ch;
}

.section-title {
  font-size: var(--text-xl);
  margin-bottom: var(--space-2);
}

.section-subtitle {
  font-family: var(--font-display);
  font-style: italic;
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  margin-bottom: var(--space-8);
}

.book-description {
  margin-bottom: var(--space-8);
}

.book-description p {
  margin-bottom: var(--space-4);
  font-size: var(--text-base);
  font-weight: 600;
  line-height: 1.75;
}

.book-description p:first-child {
  font-family: var(--font-display);
  font-style: italic;
  font-size: var(--text-lg);
  color: var(--color-text);
}

.book-meta {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4) var(--space-8);
  margin-bottom: var(--space-8);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-divider);
}

.book-meta dt {
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-faint);
  margin-bottom: var(--space-1);
}

.book-meta dd {
  font-size: var(--text-sm);
  color: var(--color-text);
  font-weight: 600;
}

/* ============================================
   About Section
   ============================================ */

.about-section {
  padding-block: clamp(var(--space-20), 12vw, var(--space-32));
}

.author-layout {
  display: flex;
  gap: clamp(var(--space-10), 4vw, var(--space-16));
  align-items: flex-start;
}

.author-photo {
  flex-shrink: 0;
  width: clamp(140px, 22vw, 200px);
}

.author-photo img {
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: 12px;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border);
  display: block;
}

.author-bio {
  flex: 1;
  min-width: 0;
}

.author-bio p {
  font-size: var(--text-base);
  font-weight: 600;
  line-height: 1.85;
  margin-bottom: var(--space-6);
}

.author-bio em {
  font-family: var(--font-display);
  font-style: italic;
}

@media (max-width: 640px) {
  .author-layout {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .author-photo {
    width: 160px;
    margin-bottom: var(--space-6);
  }
}

/* ============================================
   Quote Section
   ============================================ */

.quote-section {
  padding-block: clamp(var(--space-16), 10vw, var(--space-32));
  background: var(--color-surface-2);
  text-align: center;
}

.pull-quote {
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(1.6rem, 1.3rem + 1.2vw, 2.3rem);
  line-height: 1.4;
  color: var(--color-text);
  max-width: 34ch;
  margin: 0 auto;
  position: relative;
}

.pull-quote::before {
  content: '"';
  position: absolute;
  top: -0.5em;
  left: -0.4em;
  font-size: 3em;
  color: var(--color-primary);
  opacity: 0.3;
  line-height: 1;
}

/* ============================================
   Contact Section
   ============================================ */

.contact-section {
  padding-block: clamp(var(--space-20), 12vw, var(--space-32));
}

.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(var(--space-10), 4vw, var(--space-16));
  align-items: start;
}

.contact-info h2 {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  margin-bottom: var(--space-4);
}

.contact-info p {
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
  font-size: var(--text-base);
  font-weight: 600;
  line-height: 1.7;
}

.contact-email {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  color: var(--color-primary);
  display: inline-block;
  border-bottom: 2px solid transparent;
  transition: border-color var(--transition-interactive);
}

.contact-email:hover {
  border-bottom-color: var(--color-primary);
}

.contact-form-box {
  margin-bottom: var(--space-12);
  padding: var(--space-8);
  background: var(--color-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.contact-form-box h2 {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  margin-bottom: var(--space-3);
}

.contact-form-box p {
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
  font-size: var(--text-base);
  font-weight: 600;
  line-height: 1.7;
}

.contact-form-box form {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.contact-form-box .form-row {
  display: flex;
  gap: var(--space-4);
}

.contact-form-box input,
.contact-form-box textarea {
  flex: 1;
  padding: var(--space-4) var(--space-4);
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 600;
  width: 100%;
}

.contact-form-box input:focus,
.contact-form-box textarea:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 1px;
}

.contact-form-box textarea {
  resize: vertical;
  min-height: 120px;
}

.hidden {
  display: none;
}

.form-success {
  padding: var(--space-6);
  background: rgba(109, 170, 69, 0.15);
  border: 1px solid var(--color-success);
  border-radius: var(--radius-md);
  text-align: center;
}

.form-success p {
  color: var(--color-success);
  font-size: var(--text-base);
  font-weight: 600;
  margin: 0;
}

.form-error {
  padding: var(--space-4) var(--space-6);
  background: rgba(221, 105, 116, 0.15);
  border: 1px solid var(--color-error);
  border-radius: var(--radius-md);
  text-align: center;
  margin-top: var(--space-4);
}

.form-error p {
  color: var(--color-error);
  font-size: var(--text-sm);
  font-weight: 500;
  margin: 0;
}

.contact-links-box h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  margin-bottom: var(--space-4);
}

.contact-links {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.contact-links a {
  font-size: var(--text-sm);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  padding: var(--space-2) var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  transition: all var(--transition-interactive);
}

.contact-links a:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
}

@media (max-width: 640px) {
  .contact-layout {
    grid-template-columns: 1fr;
    text-align: center;
  }
}

/* ============================================
   Page Header (interior pages)
   ============================================ */

.page-header {
  padding-block: clamp(var(--space-16), 8vw, var(--space-24)) clamp(var(--space-8), 4vw, var(--space-16));
  text-align: center;
}

.page-title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 400;
  line-height: 1.2;
  margin-bottom: var(--space-4);
}

.page-subtitle {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.page-subtitle em {
  font-family: var(--font-display);
  font-style: italic;
}

/* ============================================
   Excerpt Sections
   ============================================ */

.excerpt-section {
  padding-block: clamp(var(--space-12), 6vw, var(--space-24));
}

.excerpt-section.excerpt-alt {
  background: var(--color-surface);
}

.excerpt-label {
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
}

.excerpt-title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 400;
  margin-bottom: var(--space-8);
  line-height: 1.3;
}

.excerpt-text {
  max-width: 65ch;
}

.excerpt-text p {
  font-size: var(--text-base);
  font-weight: 600;
  line-height: 1.85;
  margin-bottom: var(--space-5);
  color: var(--color-text);
}

/* ============================================
   Topics Grid (About page)
   ============================================ */

.topics-section {
  padding-block: clamp(var(--space-16), 8vw, var(--space-32));
  text-align: center;
}

.topics-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(var(--space-8), 4vw, var(--space-12));
  margin-top: var(--space-12);
  text-align: left;
}

.topic-card {
  padding: var(--space-8);
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-divider);
}

.topic-card h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 400;
  margin-bottom: var(--space-3);
  color: var(--color-primary);
}

.topic-card p {
  font-size: var(--text-base);
  font-weight: 600;
  line-height: 1.7;
  color: var(--color-text-muted);
}

@media (max-width: 640px) {
  .topics-grid {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   Preview CTA
   ============================================ */

.preview-cta {
  padding-block: clamp(var(--space-16), 10vw, var(--space-32));
  text-align: center;
}

/* ============================================
   Footer
   ============================================ */

.footer {
  padding: var(--space-8) var(--space-6);
  border-top: 1px solid var(--color-divider);
  text-align: center;
}

.footer p {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-faint);
}

/* ============================================
   Responsive
   ============================================ */

@media (max-width: 900px) {
  .hero-content {
    flex-direction: column;
    text-align: center;
    gap: var(--space-12);
  }

  .hero-subtitle {
    margin-inline: auto;
  }

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

  .hero-cover {
    display: none;
  }

  .hero-cover img {
    max-height: 50vh;
  }

  .book-layout {
    grid-template-columns: 1fr;
    justify-items: center;
    text-align: center;
  }

  .book-cover-side img {
    position: static;
    width: 240px;
  }

  .book-text-side {
    text-align: left;
  }

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

@media (max-width: 768px) {
  .header-inner {
    flex-wrap: wrap;
    gap: var(--space-2);
  }

  .nav {
    gap: var(--space-3);
    flex-wrap: wrap;
    justify-content: center;
  }

  .nav a {
    font-size: var(--text-xs);
  }

  .logo span {
    display: none;
  }

  .hero {
    padding: var(--space-12) var(--space-4);
  }

  .hero-cta {
    flex-direction: column;
    width: 100%;
  }

  .btn {
    width: 100%;
  }

  .pull-quote {
    font-size: var(--text-lg);
  }

  .author-layout {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .author-photo {
    width: 160px;
    margin-bottom: var(--space-6);
  }

  .contact-layout {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .contact-form-box .form-row {
    flex-direction: column;
  }

  .contact-form-box {
    padding: var(--space-6);
  }

  .contact-links {
    justify-content: center;
  }

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

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

/* ============================================
   Mobile — extra large text for small screens
   ============================================ */

@media (max-width: 768px) {
  :root,
  [data-theme='dark'] {
    --text-xs: clamp(1rem, 0.95rem + 0.25vw, 1.15rem);
    --text-sm: clamp(1.15rem, 1.08rem + 0.35vw, 1.35rem);
    --text-base: clamp(1.35rem, 1.3rem + 0.25vw, 1.6rem);
    --text-lg: clamp(1.65rem, 1.5rem + 0.75vw, 2.15rem);
    --text-xl: clamp(2.1rem, 1.8rem + 1.5vw, 3.2rem);
    --text-2xl: clamp(2.9rem, 2.3rem + 3vw, 5rem);
    --text-3xl: clamp(3.5rem, 2.8rem + 4vw, 7rem);
  }

  body {
    font-size: var(--text-base);
    line-height: 1.7;
  }

  .nav a {
    font-size: var(--text-sm);
    font-weight: 700;
  }

  .hero-title {
    font-size: var(--text-3xl);
  }

  .hero-subtitle {
    font-size: var(--text-lg);
  }

  .hero-eyebrow {
    font-size: var(--text-sm);
  }

  .section-title {
    font-size: var(--text-xl);
  }

  .section-subtitle {
    font-size: var(--text-lg);
  }

  .page-title {
    font-size: var(--text-2xl);
  }

  .page-subtitle {
    font-size: var(--text-lg);
  }

  .pull-quote {
    font-size: var(--text-xl);
  }

  .btn {
    font-size: var(--text-sm);
    font-weight: 700;
    padding: var(--space-4) var(--space-6);
  }

  .book-description p {
    font-size: var(--text-base);
    font-weight: 600;
  }

  .book-meta dt {
    font-size: var(--text-xs);
    font-weight: 700;
  }

  .book-meta dd {
    font-size: var(--text-sm);
    font-weight: 600;
  }

  .author-bio p {
    font-size: var(--text-base);
    font-weight: 600;
  }

  .excerpt-text p {
    font-size: var(--text-base);
    font-weight: 600;
  }

  .excerpt-label {
    font-size: var(--text-xs);
    font-weight: 700;
  }

  .excerpt-title {
    font-size: var(--text-xl);
  }

  .topic-card h3 {
    font-size: var(--text-lg);
  }

  .topic-card p {
    font-size: var(--text-base);
    font-weight: 600;
  }

  .contact-form-box h2 {
    font-size: var(--text-xl);
  }

  .contact-form-box p {
    font-size: var(--text-base);
    font-weight: 600;
  }

  .contact-form-box input,
  .contact-form-box textarea {
    font-size: var(--text-base);
    font-weight: 600;
    padding: var(--space-4);
  }

  .contact-links a {
    font-size: var(--text-sm);
    font-weight: 700;
  }

  .contact-links-box h3 {
    font-size: var(--text-lg);
  }

  .footer p {
    font-size: var(--text-sm);
    font-weight: 600;
  }
}

/* ============================================
   Content text — lighter, more readable
   (headings and labels left as designed)
   ============================================ */
.book-description p,
.author-bio p,
.excerpt-text p,
.topic-card p,
.contact-info p,
.contact-form-box p,
.footer p {
  font-weight: 400;
  font-size: 0.975rem;
  line-height: 1.7;
}
.book-meta dd {
  font-weight: 400;
}
.book-meta dt {
  font-weight: 600;
}
.contact-form-box input,
.contact-form-box textarea {
  font-weight: 400;
}


/* ============================================
   Reader Resources — left rail tabs
   ============================================ */
.resources-home-cta {
  padding: var(--space-20) 0;
  text-align: center;
  border-top: 1px solid var(--color-divider);
  border-bottom: 1px solid var(--color-divider);
  background: var(--color-surface);
}

.resources-home-cta .section-subtitle {
  margin: var(--space-3) auto var(--space-8);
}

.resources-section {
  padding: var(--space-16) 0 var(--space-24);
}

.resources-shell {
  max-width: var(--content-wide);
  display: grid;
  grid-template-columns: minmax(220px, 280px) minmax(0, 1fr);
  gap: clamp(2rem, 4vw, 5rem);
  align-items: start;
}

.resources-sidebar {
  position: sticky;
  top: 7rem;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding-right: var(--space-6);
  border-right: 1px solid var(--color-divider);
}

.resource-tab {
  width: 100%;
  display: grid;
  grid-template-columns: 2.5rem 1fr;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-3);
  text-align: left;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  border: 1px solid transparent;
  transition: background var(--transition-interactive), color var(--transition-interactive), border-color var(--transition-interactive);
}

.resource-tab:hover {
  color: var(--color-primary);
  background: var(--color-surface);
}

.resource-tab.active {
  color: var(--color-primary);
  background: var(--color-surface-2);
  border-color: var(--color-border);
}

.resource-tab-number {
  font-size: var(--text-xs);
  letter-spacing: .1em;
  color: var(--color-text-faint);
}

.resource-tab.active .resource-tab-number { color: var(--color-primary); }

.resources-content { min-width: 0; }
.resource-panel[hidden] { display: none !important; }
.resource-panel h2 {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-4);
}
.resource-eyebrow,
.contact-kicker,
.meeting-number {
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: .12em;
  font-size: var(--text-xs);
  font-weight: 700;
}
.resource-intro {
  color: var(--color-text-muted);
  margin-bottom: var(--space-10);
  max-width: 66ch;
}

.qa-list {
  border-top: 1px solid var(--color-divider);
}
.qa-list details {
  border-bottom: 1px solid var(--color-divider);
  padding: var(--space-5) 0;
}
.qa-list summary {
  position: relative;
  list-style: none;
  cursor: pointer;
  padding-right: 2.5rem;
  font-family: var(--font-display);
  font-size: var(--text-lg);
  line-height: 1.25;
  color: var(--color-text);
}
.qa-list summary::-webkit-details-marker { display: none; }
.qa-list summary::after {
  content: '+';
  position: absolute;
  right: .25rem;
  top: -.15rem;
  color: var(--color-primary);
  font-family: var(--font-body);
  font-size: 1.8rem;
  font-weight: 400;
}
.qa-list details[open] summary::after { content: '–'; }
.qa-list details p {
  padding-top: var(--space-4);
  color: var(--color-text-muted);
  max-width: 72ch;
}

.discussion-list {
  list-style: none;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--color-divider);
}
.discussion-list li {
  display: grid;
  grid-template-columns: 3.25rem 1fr;
  gap: var(--space-5);
  padding: var(--space-6) 0;
  border-bottom: 1px solid var(--color-divider);
}
.discussion-list li > span {
  color: var(--color-primary);
  font-size: var(--text-xs);
  letter-spacing: .1em;
  padding-top: .25rem;
}
.discussion-list p { max-width: 70ch; }

.facilitator-note {
  padding: var(--space-6);
  margin: var(--space-4) 0 var(--space-8);
  background: var(--color-surface-2);
  border-left: 3px solid var(--color-primary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  color: var(--color-text-muted);
}
.final-note { margin-top: var(--space-8); margin-bottom: 0; }
.meeting-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-5);
}
.meeting-card {
  padding: var(--space-6);
  border: 1px solid var(--color-divider);
  background: var(--color-surface);
  border-radius: var(--radius-lg);
}
.meeting-card h3 {
  margin: var(--space-2) 0 var(--space-4);
  font-size: var(--text-lg);
}
.meeting-card p { color: var(--color-text-muted); }
.meeting-card p + p { margin-top: var(--space-3); }

.contact-direct-box,
.wholesale-box {
  text-align: left;
}
.contact-email {
  margin: var(--space-5) 0;
  font-family: var(--font-display);
  font-size: var(--text-xl);
}
.contact-email a { overflow-wrap: anywhere; }
.wholesale-box { border-top: 3px solid var(--color-primary); }

@media (max-width: 920px) {
  .resources-shell {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
  .resources-sidebar {
    position: static;
    border-right: 0;
    border-bottom: 1px solid var(--color-divider);
    padding: 0 0 var(--space-5);
  }
  .resource-tab { grid-template-columns: 2.25rem 1fr; }
}

@media (max-width: 700px) {
  .meeting-grid { grid-template-columns: 1fr; }
  .discussion-list li { grid-template-columns: 2.5rem 1fr; gap: var(--space-3); }
}

/* ============================================
   Reader Resources — refined type + new panels
   ============================================ */
.resources-section { font-size: 0.975rem; }
.qa-list details p,
.discussion-list p,
.meeting-card p,
.facilitator-note,
.book-list-item p,
.similar-card p {
  font-weight: 400;
  line-height: 1.7;
}
.resource-eyebrow,
.meeting-number { font-weight: 600; }

.reading-list {
  display: grid;
  gap: var(--space-10);
  border-top: 1px solid var(--color-divider);
  padding-top: var(--space-6);
}
.reading-group { display: grid; gap: var(--space-3); }
.reading-group-title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  color: var(--color-primary);
}
.book-list { list-style: none; display: grid; gap: var(--space-4); margin: 0; padding: 0; }
.book-list-item p { max-width: 72ch; }

.similar-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-5);
  border-top: 1px solid var(--color-divider);
  padding-top: var(--space-6);
}
.similar-card {
  padding: var(--space-6);
  border: 1px solid var(--color-divider);
  background: var(--color-surface);
  border-radius: var(--radius-lg);
}
.similar-author {
  font-size: var(--text-xs);
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  margin-bottom: var(--space-2);
  font-weight: 600;
}
.similar-card h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  margin-bottom: var(--space-3);
}
.similar-card p { color: var(--color-text-muted); }

@media (max-width: 768px) {
  .resources-section { font-size: 1rem; }
  .qa-list details p,
  .discussion-list p,
  .meeting-card p,
  .book-list-item p,
  .similar-card p { font-size: 1rem; }
  .qa-list summary { font-size: 1.15rem; }
  .reading-group-title { font-size: 1.2rem; }
}
@media (max-width: 700px) {
  .similar-grid { grid-template-columns: 1fr; }
}

/* ============================================
   Site-wide content text — consistent size on mobile
   ============================================ */
@media (max-width: 768px) {
  .book-description p,
  .author-bio p,
  .excerpt-text p,
  .topic-card p,
  .contact-info p,
  .contact-form-box p,
  .footer p {
    font-size: 1rem;
  }
}