:root {
  --color-ink: #1a1a1a;
  --color-ink-light: #3d3d3d;
  --color-paper: #faf8f5;
  --color-paper-warm: #f5f0e8;
  --color-cream: #ede8dc;
  --color-tan: #d4c9b5;
  --color-rust: #8b4513;
  --color-rust-dark: #6b3410;
  --color-sage: #5c6b56;
  --color-sage-dark: #3f4a3b;
  --color-warm-gray: #6b635b;
  --color-border: #d4cec4;

  --font-display: 'Playfair Display', Georgia, serif;
  --font-body: 'Lora', Georgia, serif;
  --font-ui: 'Source Sans 3', -apple-system, sans-serif;

  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --space-4xl: 96px;

  --max-width: 1100px;
  --radius: 3px;
  --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-body);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-ink);
  background-color: var(--color-paper);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-ink);
}

h1 { font-size: clamp(1.75rem, 5vw, 2.5rem); }
h2 { font-size: clamp(1.4rem, 4vw, 1.75rem); margin-bottom: var(--space-lg); }
h3 { font-size: clamp(1.1rem, 3vw, 1.25rem); }

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

a:hover {
  color: var(--color-rust-dark);
}

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

/* ─── Header ──────────────────────────────────────────────── */

.site-header {
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-md) 0;
  background: var(--color-paper);
  position: relative;
  z-index: 100;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
}

.logo-link {
  display: block;
  line-height: 0;
  flex-shrink: 0;
}

.logo {
  height: 52px;
  width: auto;
}

/* Desktop nav */
.main-nav {
  display: flex;
  gap: var(--space-xl);
}

.nav-link {
  font-family: var(--font-ui);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-ink-light);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  /* min 44px touch target height */
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 0 var(--space-sm);
  border-bottom: 2px solid transparent;
  transition: color var(--transition), border-color var(--transition);
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-rust);
  border-bottom-color: var(--color-rust);
}

/* Hamburger button — hidden on desktop */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
  flex-shrink: 0;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-ink);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
  transform-origin: center;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ─── Buttons ─────────────────────────────────────────────── */

.btn {
  display: inline-block;
  font-family: var(--font-ui);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  padding: var(--space-md) var(--space-xl);
  min-height: 48px;
  border-radius: var(--radius);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  text-align: center;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn-primary {
  background: var(--color-rust);
  color: #fff;
  border-color: var(--color-rust);
}

.btn-primary:hover {
  background: var(--color-rust-dark);
  border-color: var(--color-rust-dark);
  color: #fff;
}

.btn-secondary {
  background: transparent;
  color: var(--color-rust);
  border-color: var(--color-rust);
}

.btn-secondary:hover {
  background: var(--color-rust);
  color: #fff;
}

.btn-small {
  font-size: 0.85rem;
  padding: var(--space-sm) var(--space-lg);
  min-height: 44px;
  background: var(--color-rust);
  color: #fff;
  border-color: var(--color-rust);
}

.btn-small:hover {
  background: var(--color-rust-dark);
  color: #fff;
}

/* ─── Hero ────────────────────────────────────────────────── */

.hero {
  padding: var(--space-4xl) 0;
  text-align: center;
  background: var(--color-paper-warm);
  border-bottom: 1px solid var(--color-border);
}

.hero-title {
  font-size: clamp(2rem, 7vw, 3.5rem);
  margin-bottom: var(--space-lg);
  font-style: italic;
}

.hero-subtitle {
  font-size: clamp(1rem, 2.5vw, 1.2rem);
  color: var(--color-warm-gray);
  max-width: 560px;
  margin: 0 auto var(--space-2xl);
  line-height: 1.8;
}

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

/* ─── About Section ───────────────────────────────────────── */

.about-section {
  padding: var(--space-4xl) 0;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: start;
}

.about-text h2 {
  margin-bottom: var(--space-lg);
}

.about-text p {
  margin-bottom: var(--space-md);
  color: var(--color-ink-light);
}

.about-values {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

.value-item {
  padding: var(--space-lg);
  background: var(--color-paper-warm);
  border-left: 3px solid var(--color-rust);
  border-radius: var(--radius);
}

.value-item h3 {
  margin-bottom: var(--space-sm);
  color: var(--color-rust-dark);
}

.value-item p {
  font-size: 0.95rem;
  color: var(--color-warm-gray);
}

/* ─── Books ───────────────────────────────────────────────── */

.featured-books,
.books-listing {
  padding: var(--space-4xl) 0;
}

.featured-books {
  background: var(--color-paper-warm);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.featured-books h2 {
  text-align: center;
}

.books-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(240px, 100%), 340px));
  justify-content: center;
  gap: var(--space-xl);
  margin-top: var(--space-xl);
}

.book-card-link {
  display: block;
  text-decoration: none;
  color: inherit;
}

.book-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: box-shadow var(--transition), transform var(--transition);
}

.book-card:hover {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  transform: translateY(-2px);
}

.book-cover {
  width: 100%;
  height: 220px;
  object-fit: cover;
  object-position: top;
}

.book-cover-placeholder {
  width: 100%;
  height: 220px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-cream);
  padding: var(--space-lg);
  text-align: center;
  font-family: var(--font-display);
  font-style: italic;
  color: var(--color-warm-gray);
}

.book-info {
  padding: var(--space-lg) var(--space-xl) var(--space-xl);
}

.book-info h2,
.book-info h3 {
  font-size: clamp(1rem, 3vw, 1.15rem);
  margin-bottom: var(--space-xs);
}

.book-author {
  font-style: italic;
  color: var(--color-warm-gray);
  font-size: 0.9rem;
}

.book-genre {
  font-family: var(--font-ui);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-sage);
  margin-top: var(--space-sm);
}

.book-description {
  font-size: 0.9rem;
  color: var(--color-ink-light);
  margin-top: var(--space-sm);
  line-height: 1.6;
}

.book-info .btn {
  margin-top: var(--space-md);
}

/* Cards on the books page list author below title without extra padding */
.books-listing .book-card .book-author {
  padding: 0;
}

.section-cta {
  text-align: center;
  margin-top: var(--space-2xl);
}

/* ─── CTA Section ─────────────────────────────────────────── */

.cta-section {
  padding: var(--space-4xl) 0;
  text-align: center;
  background: var(--color-ink);
  color: var(--color-paper);
}

.cta-section h2 {
  color: var(--color-paper);
}

.cta-section p {
  max-width: 520px;
  margin: 0 auto var(--space-xl);
  color: var(--color-tan);
  line-height: 1.8;
}

/* ─── Page Header ─────────────────────────────────────────── */

.page-header {
  padding: var(--space-3xl) 0;
  text-align: center;
  background: var(--color-paper-warm);
  border-bottom: 1px solid var(--color-border);
}

.page-header p {
  margin-top: var(--space-md);
  color: var(--color-warm-gray);
  font-size: clamp(1rem, 2.5vw, 1.1rem);
}

/* ─── Contact ─────────────────────────────────────────────── */

.contact-section {
  padding: var(--space-4xl) 0;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--space-3xl);
  align-items: start;
}

.contact-info h2 {
  margin-bottom: var(--space-md);
}

.contact-info p {
  color: var(--color-ink-light);
  margin-bottom: var(--space-lg);
}

.contact-details {
  margin-top: var(--space-xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.contact-item strong {
  font-family: var(--font-ui);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-sage);
}

.contact-item p {
  margin: var(--space-xs) 0 0;
  color: var(--color-ink);
}

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

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

.cf-turnstile {
  margin-top: var(--space-sm);
}

.form-message {
  font-family: var(--font-ui);
  font-size: 0.95rem;
  line-height: 1.5;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.form-group label {
  font-family: var(--font-ui);
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-ink-light);
}

.form-group input,
.form-group select,
.form-group textarea {
  font-family: var(--font-body);
  /* 16px prevents iOS auto-zoom on focus */
  font-size: 1rem;
  padding: var(--space-md);
  min-height: 48px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: #fff;
  color: var(--color-ink);
  transition: border-color var(--transition);
  width: 100%;
  -webkit-appearance: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-rust);
}

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

.empty-state {
  text-align: center;
  color: var(--color-warm-gray);
  font-style: italic;
  padding: var(--space-3xl) 0;
}

/* ─── Footer ──────────────────────────────────────────────── */

.site-footer {
  border-top: 1px solid var(--color-border);
  padding: var(--space-2xl) 0;
  background: var(--color-paper-warm);
}

.footer-content {
  text-align: center;
}

.footer-tagline {
  font-family: var(--font-display);
  font-style: italic;
  color: var(--color-warm-gray);
  margin-bottom: var(--space-sm);
}

.footer-copy {
  font-family: var(--font-ui);
  font-size: 0.85rem;
  color: var(--color-warm-gray);
}

/* ─── Responsive: Tablet (≤ 768px) ───────────────────────── */

@media (max-width: 768px) {
  .container {
    padding: 0 var(--space-md);
  }

  /* Show hamburger, hide desktop nav */
  .nav-toggle {
    display: flex;
  }

  .main-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-paper);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    gap: 0;
    padding: var(--space-sm) 0;
  }

  .main-nav.is-open {
    display: flex;
  }

  .nav-link {
    padding: var(--space-md) var(--space-lg);
    border-bottom: none;
    border-left: 3px solid transparent;
    min-height: 52px;
    font-size: 1rem;
  }

  .nav-link:hover,
  .nav-link.active {
    border-left-color: var(--color-rust);
    border-bottom-color: transparent;
    background: var(--color-paper-warm);
  }

  .hero {
    padding: var(--space-3xl) 0;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }

  .books-grid {
    grid-template-columns: repeat(auto-fit, minmax(min(220px, 100%), 300px));
    justify-content: center;
  }
}

/* ─── Responsive: Mobile (≤ 480px) ───────────────────────── */

@media (max-width: 480px) {
  .hero {
    padding: var(--space-2xl) 0;
  }

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

  .hero-actions .btn {
    width: 100%;
    max-width: 280px;
  }

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

  .about-values {
    gap: var(--space-md);
  }

  .cta-section {
    padding: var(--space-2xl) 0;
  }

  .page-header {
    padding: var(--space-2xl) 0;
  }

  .about-section,
  .featured-books,
  .books-listing,
  .contact-section {
    padding: var(--space-2xl) 0;
  }

  .footer-tagline {
    font-size: 0.95rem;
  }
}