@import url('https://fonts.googleapis.com/css2?family=Libre+Franklin:wght@400;500;600;700;800&display=swap');

:root {
  --color-text: #333333;
  --color-text-dark: #222222;
  --color-bg: #ffffff;
  --color-header-bg: #fafafa;
  --color-border: #e5e5e5;
  --color-muted: #666666;
  --color-hero-overlay: rgba(0, 0, 0, 0.45);

  --font-base: 'Libre Franklin', 'Helvetica Neue', Helvetica, Arial, sans-serif;

  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;

  --radius: 4px;
  --max-w: 800px;
  --transition: 0.2s ease;
}

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

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

body {
  font-family: var(--font-base);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

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

a:hover {
  opacity: 0.7;
}

/* ─── Hero ─────────────────────────────────────────── */
.site-hero {
  position: relative;
  width: 100%;
  min-height: 420px;
  background: url('/images/hero.jpg') center/cover no-repeat;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-xl) var(--space-md);
}

.site-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--color-hero-overlay);
}

.site-hero__content {
  position: relative;
  z-index: 1;
}

.site-title {
  font-size: clamp(1.75rem, 5vw, 2.75rem);
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #ffffff;
  line-height: 1.2;
}

.site-tagline {
  margin-top: var(--space-xs);
  font-size: 1rem;
  font-weight: 400;
  color: rgba(255, 255, 255, 0.85);
  letter-spacing: 0.04em;
}

/* ─── Navigation ────────────────────────────────────── */
.site-nav {
  background: var(--color-header-bg);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-nav__inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--space-md);
  display: flex;
  gap: var(--space-lg);
  align-items: center;
  height: 52px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.site-nav__inner::-webkit-scrollbar {
  display: none;
}

.site-nav a {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-dark);
  white-space: nowrap;
  padding: 4px 0;
  border-bottom: 2px solid transparent;
  transition: border-color var(--transition), opacity var(--transition);
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  opacity: 1;
  border-bottom-color: var(--color-text-dark);
}

/* ─── Main content ──────────────────────────────────── */
main {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: var(--space-xl) var(--space-md);
}

.page-heading {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--color-border);
}

h2 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-top: var(--space-lg);
  margin-bottom: var(--space-sm);
  color: var(--color-text-dark);
}

h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-top: var(--space-md);
  margin-bottom: var(--space-xs);
}

p {
  margin-bottom: var(--space-md);
  font-size: 1.0625rem;
}

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

/* ─── Book cover image ──────────────────────────────── */
.book-cover {
  float: right;
  margin: 0 0 var(--space-md) var(--space-lg);
  border-radius: var(--radius);
  box-shadow: 0 4px 20px rgba(0,0,0,0.12);
  max-width: 140px;
}

/* ─── Amazon buttons ────────────────────────────────── */
.buy-buttons {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
  flex-wrap: wrap;
}

.buy-btn {
  display: inline-block;
  transition: transform var(--transition), opacity var(--transition);
}

.buy-btn:hover {
  transform: translateY(-2px);
  opacity: 0.85;
}

.buy-btn img {
  height: 40px;
  width: auto;
}

/* ─── CTA button ────────────────────────────────────── */
.btn {
  display: inline-block;
  padding: 0.75rem 1.75rem;
  background: var(--color-text-dark);
  color: #ffffff !important;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border-radius: var(--radius);
  transition: background var(--transition), transform var(--transition);
  cursor: pointer;
}

.btn:hover {
  background: #444444;
  opacity: 1;
  transform: translateY(-1px);
}

.btn--outline {
  background: transparent;
  color: var(--color-text-dark) !important;
  border: 2px solid var(--color-text-dark);
}

.btn--outline:hover {
  background: var(--color-text-dark);
  color: #ffffff !important;
}

/* ─── TOC list ──────────────────────────────────────── */
.toc {
  list-style: none;
  padding: 0;
  margin: var(--space-sm) 0 var(--space-lg);
  display: grid;
  gap: 0.35rem;
}

.toc li {
  font-size: 0.9375rem;
  padding: 0.35rem 0;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-dark);
}

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

.toc-section {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-top: var(--space-md);
  margin-bottom: 0.25rem;
}

/* ─── Bullet lists ──────────────────────────────────── */
ul.bullet-list {
  list-style: none;
  padding: 0;
  margin: var(--space-sm) 0 var(--space-md);
  display: grid;
  gap: 0.6rem;
}

ul.bullet-list li {
  padding-left: 1.25rem;
  position: relative;
  font-size: 1.0625rem;
  line-height: 1.6;
}

ul.bullet-list li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--color-muted);
  font-weight: 700;
}

/* ─── Quote blocks ──────────────────────────────────── */
.review-grid {
  display: grid;
  gap: var(--space-md);
  margin: var(--space-lg) 0;
}

.review-card {
  border-left: 3px solid var(--color-text-dark);
  padding: var(--space-sm) var(--space-md);
  background: #f8f8f8;
  border-radius: 0 var(--radius) var(--radius) 0;
}

.review-card blockquote {
  font-size: 1.0625rem;
  font-style: italic;
  line-height: 1.65;
  color: var(--color-text-dark);
}

/* ─── Contact form ──────────────────────────────────── */
.contact-form {
  display: grid;
  gap: var(--space-md);
  margin-top: var(--space-md);
  max-width: 560px;
}

.form-group {
  display: grid;
  gap: 0.4rem;
}

.form-group label {
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--color-text-dark);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  font-family: var(--font-base);
  font-size: 1rem;
  color: var(--color-text-dark);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-bg);
  transition: border-color var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: #999;
}

.form-group textarea {
  min-height: 140px;
  resize: vertical;
}

/* ─── Prose pages (T&C, Privacy) ───────────────────── */
.prose h2 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-top: var(--space-lg);
  margin-bottom: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.prose p {
  font-size: 0.9375rem;
  color: var(--color-text);
  line-height: 1.75;
}

/* ─── Footer ────────────────────────────────────────── */
.site-footer {
  margin-top: var(--space-2xl);
  border-top: 1px solid var(--color-border);
  padding: var(--space-lg) var(--space-md);
  text-align: center;
}

.site-footer__links {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.site-footer a {
  font-size: 0.8125rem;
  color: var(--color-muted);
  transition: color var(--transition);
}

.site-footer a:hover {
  color: var(--color-text-dark);
  opacity: 1;
}

/* ─── Bonus page CTA buttons ────────────────────────── */
.action-buttons {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
  margin-top: var(--space-lg);
}

/* ─── Responsive ─────────────────────────────────────── */
@media (max-width: 640px) {
  main {
    padding: var(--space-lg) var(--space-sm);
  }

  .site-hero {
    min-height: 300px;
    padding: var(--space-lg) var(--space-sm);
  }

  .book-cover {
    float: none;
    margin: 0 auto var(--space-md);
    max-width: 120px;
  }

  .site-nav__inner {
    gap: var(--space-md);
  }

  .buy-buttons {
    flex-direction: column;
    align-items: flex-start;
  }
}

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