@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,700;0,900;1,400;1,700&family=Libre+Baskerville:ital,wght@0,400;0,700;1,400&family=DM+Mono:wght@300;400&display=swap');

/* ─── Design Tokens ─── */
:root {
  --ink:       #0f0d0b;
  --paper:     #f4f0e8;
  --cream:     #ede8dc;
  --rust:      #9b3a1a;
  --gold:      #b8922a;
  --muted:     #6b6358;
  --rule:      #2a2520;

  --font-display: 'Playfair Display', Georgia, serif;
  --font-body:    'Libre Baskerville', Georgia, serif;
  --font-mono:    'DM Mono', 'Courier New', monospace;

  --max-w: 1100px;
  --gap: clamp(1.5rem, 4vw, 3rem);
}

/* ─── Reset ─── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  background: var(--paper);
  color: var(--ink);
  line-height: 1.7;
  font-size: clamp(15px, 1.6vw, 17px);
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

/* ─── Grain overlay ─── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.025;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 200px;
}

/* ─── Nav ─── */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--ink);
  border-bottom: 1px solid var(--rule);
  padding: 0 var(--gap);
  width: 100%;
}

.nav-inner {
  max-width: 100%;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 62px;
  gap: 3rem;
  padding: 0 1rem;
}
.nav-logo {
  flex-shrink: 0;
}

.nav-logo {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--paper);
  opacity: 0.85;
  transition: opacity 0.2s;
}
.nav-logo:hover { opacity: 1; }
.nav-links {
  display: flex;
  gap: 2.2rem;
  list-style: none;
  flex-wrap: nowrap;
  white-space: nowrap;
}
.nav-links a {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--paper);
  opacity: 0.6;
  transition: opacity 0.2s;
}
.nav-links a:hover,
.nav-links a.active { opacity: 1; }

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 1px;
  background: var(--paper);
  transition: all 0.3s;
}

/* ─── Hero ─── */
.hero {
  background: var(--ink);
  color: var(--paper);
  padding: clamp(4rem, 10vw, 8rem) var(--gap);
  position: relative;
  overflow: hidden;
}
.hero::after {
  content: '⬡';
  position: absolute;
  right: -2rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: clamp(12rem, 25vw, 22rem);
  opacity: 0.04;
  line-height: 1;
  pointer-events: none;
  color: var(--gold);
}
.hero-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  position: relative;
  z-index: 1;
}
.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1.2rem;
}
.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 6vw, 5.5rem);
  font-weight: 900;
  line-height: 1.05;
  margin-bottom: 1.5rem;
  max-width: 14ch;
}
.hero h1 em {
  font-style: italic;
  color: var(--gold);
}
.hero-sub {
  font-family: var(--font-body);
  font-size: clamp(1rem, 1.8vw, 1.15rem);
  line-height: 1.75;
  max-width: 52ch;
  opacity: 0.75;
  margin-bottom: 2.5rem;
}
.btn {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  padding: 0.85rem 1.8rem;
  border: 1px solid currentColor;
  transition: background 0.2s, color 0.2s;
}
.btn-light {
  color: var(--paper);
  border-color: rgba(244,240,232,0.4);
}
.btn-light:hover {
  background: var(--paper);
  color: var(--ink);
}
.btn-dark {
  color: var(--ink);
  border-color: rgba(15,13,11,0.35);
}
.btn-dark:hover {
  background: var(--ink);
  color: var(--paper);
}
.btn-rust {
  color: var(--rust);
  border-color: var(--rust);
}
.btn-rust:hover {
  background: var(--rust);
  color: var(--paper);
}

/* ─── Section shell ─── */
.section {
  padding: clamp(3rem, 8vw, 6rem) var(--gap);
}
.section-inner {
  max-width: var(--max-w);
  margin: 0 auto;
}
.section-label {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 2.5rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}
.section-label::after {
  content: '';
  flex: 1;
  max-width: 80px;
  height: 1px;
  background: var(--muted);
  opacity: 0.4;
}

/* ─── Book Grid ─── */
.book-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 3rem 2.5rem;
}
.book-card {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}
.book-card-cover {
  width: 100%;
  background: #fff;
  position: relative;
  padding: 1rem 1rem 0;
}
.book-card-cover img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.5s ease;
}
.book-card:hover .book-card-cover img {
  transform: scale(1.04);
}
.book-card-tag {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--rust);
}
.book-card h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1.2;
}
.book-card p {
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 1.65;
}
.book-card .btn {
  align-self: flex-start;
  margin-top: auto;
  font-size: 0.6rem;
}

/* ─── Mission band ─── */
.mission-band {
  background: var(--ink);
  color: var(--paper);
  padding: clamp(3rem, 6vw, 5rem) var(--gap);
  text-align: center;
}
.mission-band blockquote {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 3vw, 2.2rem);
  font-style: italic;
  font-weight: 400;
  line-height: 1.5;
  max-width: 36ch;
  margin: 0 auto 1.5rem;
  opacity: 0.9;
}
.mission-band cite {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  opacity: 0.4;
  font-style: normal;
}

/* ─── Book detail page ─── */
.book-detail {
  padding: clamp(3rem, 8vw, 6rem) var(--gap);
}
.book-detail-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 4rem;
  align-items: start;
}
.book-detail-cover {
  position: sticky;
  top: 90px;
}
.book-detail-cover img {
  width: 100%;
  box-shadow: 8px 12px 40px rgba(15,13,11,0.18);
}
.book-detail-meta {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--rust);
  margin-bottom: 1rem;
}
.book-detail h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: 0.5rem;
}
.book-detail .byline {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  color: var(--muted);
  margin-bottom: 2rem;
}
.book-detail .description {
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: 2rem;
  max-width: 58ch;
}
.blurbs {
  margin: 2rem 0;
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}
.blurb {
  padding: 1.2rem 1.5rem;
  border-left: 2px solid var(--gold);
  background: var(--cream);
}
.blurb p {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--ink);
}

/* ─── Authors page ─── */
.authors-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
  gap: 4rem 3rem;
}
.author-card {}
.author-photo {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  object-position: top;
  margin-bottom: 1.5rem;
  filter: grayscale(20%);
}
.author-card h3 {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}
.author-card p {
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--muted);
}

/* ─── Page hero (inner pages) ─── */
.page-hero {
  background: var(--ink);
  color: var(--paper);
  padding: clamp(3rem, 7vw, 5rem) var(--gap) clamp(2rem, 5vw, 3.5rem);
}
.page-hero-inner {
  max-width: var(--max-w);
  margin: 0 auto;
}
.page-hero .eyebrow {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1rem;
}
.page-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.8rem);
  font-weight: 900;
  line-height: 1.1;
}
.page-hero p {
  margin-top: 1rem;
  max-width: 52ch;
  opacity: 0.7;
  font-size: 1rem;
}

/* ─── Divider rule ─── */
hr.rule {
  border: none;
  border-top: 1px solid rgba(15,13,11,0.12);
  margin: 0;
}

/* ─── Footer ─── */
footer {
  background: var(--ink);
  color: var(--paper);
  padding: clamp(2.5rem, 6vw, 4rem) var(--gap);
}
.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}
.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 2rem;
  flex-wrap: wrap;
}
.footer-brand {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  opacity: 0.5;
}
.footer-nav {
  display: flex;
  gap: 2rem;
  list-style: none;
  flex-wrap: wrap;
}
.footer-nav a {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  opacity: 0.4;
  transition: opacity 0.2s;
}
.footer-nav a:hover { opacity: 0.9; }
.footer-copy {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.1em;
  opacity: 0.25;
  border-top: 1px solid rgba(244,240,232,0.08);
  padding-top: 1.5rem;
}

/* ─── Fade-in on scroll ─── */
.fade-in {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: none;
}

/* ─── Responsive ─── */
@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 62px;
    left: 0;
    right: 0;
    background: var(--ink);
    flex-direction: column;
    gap: 0;
    padding: 0.5rem 0 1rem;
    border-bottom: 1px solid rgba(244,240,232,0.1);
  }
  .nav-links.open { display: flex; }
  .nav-links a {
    display: block;
    padding: 0.85rem var(--gap);
  }
  .nav-toggle { display: flex; }
  nav { position: relative; }

  .book-detail-inner {
    grid-template-columns: 1fr;
  }
  .book-detail-cover {
    position: static;
    max-width: 260px;
  }
}