/* ---------- Design tokens ---------- */
:root {
  --color-bg: #faf7f2;
  --color-bg-alt: #f1ebe0;
  --color-ink: #1f3a3d;
  --color-ink-soft: #3f5457;
  --color-accent: #c97b63;
  --color-accent-dark: #ab5c44;
  --color-teal: #2c4a52;
  --color-line: #e2d9c8;
  --font-display: 'Playfair Display', Georgia, 'Times New Roman', serif;
  --font-body: 'Lato', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --max-width: 1120px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-ink);
  font-family: var(--font-body);
  line-height: 1.7;
  font-size: 17px;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--color-teal);
  line-height: 1.25;
  margin: 0 0 0.5em;
}

h1 { font-size: clamp(2.2rem, 5vw, 3.4rem); }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.3rem); }
h3 { font-size: 1.4rem; }

p { margin: 0 0 1.2em; }

a { color: var(--color-accent-dark); }

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

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ---------- Header / nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(250, 247, 242, 0.94);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--color-line);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  max-width: var(--max-width);
  margin: 0 auto;
}

.brand {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--color-teal);
  text-decoration: none;
  letter-spacing: 0.02em;
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  text-decoration: none;
  color: var(--color-ink);
  font-size: 0.95rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  border-bottom: 2px solid transparent;
  padding-bottom: 3px;
  transition: border-color 0.2s, color 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-accent-dark);
  border-color: var(--color-accent);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.6rem;
  color: var(--color-teal);
  cursor: pointer;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  display: flex;
  align-items: flex-end;
  height: 42vh;
  min-height: 280px;
  color: #fff;
  overflow: hidden;
}

.hero img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 55%;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.1);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem 3rem;
  text-align: center;
  width: 100%;
}

.hero-content h1 {
  color: #fff;
  margin-bottom: 0.3em;
  text-shadow: 0 2px 20px rgba(0,0,0,0.6), 0 1px 6px rgba(0,0,0,0.5);
}

.hero-content .tagline {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.4rem;
  color: #f1ebe0;
  text-shadow: 0 2px 16px rgba(0,0,0,0.6), 0 1px 5px rgba(0,0,0,0.5);
}

/* ---------- Sections ---------- */
section { padding: 4.5rem 0; }
section.alt { background: var(--color-bg-alt); }
section.featured-section { padding: 3.6rem 0; }

.section-intro {
  max-width: 720px;
  margin: 0 auto 2.5rem;
  text-align: center;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 1.1rem;
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 500;
  font-size: 1.05rem;
  color: var(--color-ink-soft);
  margin-bottom: 0.6rem;
}

.eyebrow::before,
.eyebrow::after {
  content: "";
  flex: 1 1 auto;
  height: 1px;
  background: var(--color-line);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  padding: 0.75rem 1.8rem;
  background: var(--color-accent);
  color: #fff;
  text-decoration: none;
  border-radius: 999px;
  font-size: 0.95rem;
  letter-spacing: 0.03em;
  transition: background 0.2s, transform 0.15s;
}

.btn:hover { background: var(--color-accent-dark); transform: translateY(-1px); }

.btn-outline {
  background: transparent;
  border: 1.5px solid var(--color-teal);
  color: var(--color-teal);
}

.btn-outline:hover { background: var(--color-teal); color: #fff; }

.btn-outline-accent {
  background: transparent;
  border: 1.5px solid var(--color-accent);
  color: var(--color-accent-dark);
}

.btn-outline-accent:hover { background: var(--color-accent); color: #fff; }

/* ---------- Series / book grids ---------- */
.series-block {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 3rem;
  align-items: center;
  margin-bottom: 4rem;
}

.series-block:nth-child(even) .series-text { order: 2; }

.series-text .eyebrow { margin-bottom: 0.4rem; }

.book-covers {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
}

.book-card {
  text-decoration: none;
  color: inherit;
  width: 160px;
  transition: transform 0.2s;
}

.book-card:hover { transform: translateY(-4px); }

.book-card img {
  border-radius: 4px;
  box-shadow: 0 12px 24px rgba(31,58,61,0.22);
  margin-bottom: 0.75rem;
}

.book-card .book-title {
  font-family: var(--font-display);
  font-size: 1rem;
  color: var(--color-teal);
  text-align: center;
}

.quote-block {
  border-left: 3px solid var(--color-accent);
  padding-left: 1.2rem;
  font-style: italic;
  color: var(--color-ink-soft);
  margin: 1.5rem 0;
}

/* ---------- Featured book ---------- */
.featured {
  display: grid;
  grid-template-columns: 230px 1fr;
  gap: 2.4rem;
  align-items: center;
}

.featured > div {
  container-type: inline-size;
}

.featured img {
  border-radius: 6px;
  box-shadow: 0 20px 40px rgba(31,58,61,0.25);
}

/* ---------- About page ---------- */
.about-layout {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 3rem;
  align-items: start;
}

.about-layout--compact {
  grid-template-columns: 260px 1fr;
}

.about-layout img {
  border-radius: 6px;
  box-shadow: 0 20px 40px rgba(31,58,61,0.2);
  position: sticky;
  top: 6rem;
}

/* ---------- Book detail page ---------- */
.book-detail {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 3.5rem;
  align-items: start;
}

.book-detail > div {
  container-type: inline-size;
}

.book-detail img {
  border-radius: 6px;
  box-shadow: 0 20px 40px rgba(31,58,61,0.25);
  position: sticky;
  top: 6rem;
}

.book-meta {
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent-dark);
  margin-bottom: 0.5rem;
}

.reviews {
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-line);
}

.review {
  background: #fff;
  border: 1px solid var(--color-line);
  border-radius: 8px;
  padding: 1.5rem;
  margin-bottom: 1.2rem;
}

.source {
  display: block;
  margin-top: 0.6rem;
  font-size: 0.85rem;
  color: var(--color-ink-soft);
  font-style: normal;
}

/* ---------- Book nav (prev/next across all titles) ---------- */
.all-books-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 2rem;
}

/* ---------- Setting banner + pair books ---------- */
.setting-banner {
  position: relative;
  height: 42vh;
  min-height: 280px;
  overflow: hidden;
  margin-bottom: 3rem;
}

.setting-banner img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.pair-books {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  margin-top: 3rem;
}

.pair-books.single-book {
  grid-template-columns: minmax(0, 640px);
  justify-content: center;
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
}

.cover-placeholder {
  aspect-ratio: 2 / 3;
  width: 100%;
  background: var(--color-bg-alt);
  border: 2px dashed var(--color-line);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--color-ink-soft);
  font-family: var(--font-display);
  font-style: italic;
  font-size: 0.95rem;
  padding: 1rem;
}

.btn-disabled {
  opacity: 0.55;
  cursor: not-allowed;
  pointer-events: none;
}

.pair-book {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 1.5rem;
  align-items: start;
}

.pair-book > div {
  container-type: inline-size;
}

.pair-book img {
  border-radius: 4px;
  box-shadow: 0 12px 24px rgba(31, 58, 61, 0.22);
}

.pair-book h3 {
  margin-bottom: 0.3rem;
}

.book-cover-link {
  display: block;
  transition: transform 0.2s ease;
}

.book-cover-link:hover,
.book-cover-link:focus-visible {
  transform: translateY(-4px);
}

.book-title-link {
  display: inline-block;
  color: inherit;
  text-decoration: none;
  transition: transform 0.15s ease, color 0.15s ease;
}

.book-title-link:hover,
.book-title-link:focus-visible {
  transform: translateY(-2px);
  color: var(--color-accent-dark);
}

.pair-book p {
  font-size: 0.95rem;
}

.pair-book-actions {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.7rem;
  margin-top: 1rem;
}

@container (min-width: 360px) {
  .pair-book-actions {
    flex-direction: row;
    align-items: center;
    flex-wrap: nowrap;
  }
}

.pair-book-actions .btn {
  padding: 0.55rem 1.2rem;
  font-size: 0.85rem;
}

@media (max-width: 720px) {
  .pair-books {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  .pair-book {
    grid-template-columns: 100px 1fr;
  }
}

/* ---------- Contact form ---------- */
.contact-form {
  max-width: 560px;
  margin: 0 auto;
}

.form-field {
  margin-bottom: 1.4rem;
}

.form-field label {
  display: block;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-ink-soft);
  margin-bottom: 0.4rem;
}

.form-field input,
.form-field textarea {
  width: 100%;
  padding: 0.8rem 1rem;
  font-family: var(--font-body);
  font-size: 1rem;
  border: 1px solid var(--color-line);
  border-radius: 6px;
  background: #fff;
  color: var(--color-ink);
}

.form-field input:focus,
.form-field textarea:focus {
  outline: none;
  border-color: var(--color-accent);
}

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

.form-note {
  margin-top: 1rem;
  font-size: 0.9rem;
  color: var(--color-ink-soft);
  min-height: 1.4em;
}

.contact-form button.btn {
  border: none;
  cursor: pointer;
  font-family: var(--font-body);
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--color-teal);
  color: #dfe8e6;
  padding: 2.4rem 0 1.6rem;
  margin-top: 1.6rem;
}

.footer-wrap {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 2rem;
}

.footer-wrap h3 { color: #fff; }

.social-links {
  display: flex;
  gap: 1.2rem;
  margin-top: 1rem;
}

.social-links a {
  color: #fff;
  text-decoration: none;
  border: 1px solid rgba(255,255,255,0.4);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
}

.social-links a:hover { background: var(--color-accent); border-color: var(--color-accent); }

.footer-bottom {
  text-align: center;
  margin-top: 2rem;
  padding-top: 1.2rem;
  border-top: 1px solid rgba(255,255,255,0.15);
  font-size: 0.85rem;
  color: #b9c9c6;
}

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .series-block,
  .featured,
  .about-layout,
  .book-detail {
    grid-template-columns: 1fr;
  }
  .series-block:nth-child(even) .series-text { order: 0; }
  .about-layout img,
  .book-detail img {
    position: static;
    max-width: 260px;
    margin: 0 auto 2rem;
  }
  .featured img {
    max-width: 190px;
    margin: 0 auto 2rem;
  }
}

@media (max-width: 720px) {
  .nav-toggle { display: block; }
  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-bg);
    flex-direction: column;
    gap: 0;
    border-bottom: 1px solid var(--color-line);
    display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links li { width: 100%; }
  .nav-links a {
    display: block;
    padding: 1rem 1.5rem;
    text-transform: none;
    font-size: 1rem;
  }
  .book-covers { flex-wrap: wrap; }
}