/* Design tokens — extracted verbatim from the design handoff. The OKLCH
   values are authoritative; the hex comments are for tooling that can't
   read OKLCH. */
:root {
  --paper: oklch(0.97 0.008 80);       /* #f6f3ec */
  --paper-2: oklch(0.94 0.012 80);     /* #ede8dd */
  --ink: oklch(0.22 0.012 60);         /* #2a241c */
  --ink-2: oklch(0.42 0.012 60);       /* #5b5249 */
  --ink-3: oklch(0.62 0.010 60);       /* #8c8377 */
  --rule: oklch(0.86 0.010 70);        /* #d8d2c5 */
  --rule-2: oklch(0.78 0.012 70);      /* #bfb8aa */
  --accent: oklch(0.58 0.13 40);       /* #b35a3b — terracotta */
  --accent-ink: oklch(0.32 0.10 40);   /* #5e2f1f */

  --serif: "Newsreader", Georgia, "Times New Roman", serif;
  --sans: "DM Sans", ui-sans-serif, system-ui, -apple-system, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, Menlo, monospace;

  --rad: 4px;
}

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

html, body { margin: 0; padding: 0; }

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: inherit; }

.page {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 40px;
}

/* Utility */
.mono {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--ink-3);
}

/* ─────────────────────────────────────────────────────────────────────
   Header
   ───────────────────────────────────────────────────────────────────── */
.site-header {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 24px;
  padding: 20px 0;
  border-bottom: 0.5px solid var(--rule);
}

.wordmark {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  text-decoration: none;
  color: inherit;
}

.wordmark-name {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 22px;
  font-style: italic;
  letter-spacing: -0.01em;
}

.wordmark-est { font-size: 9px; }

.site-nav {
  display: flex;
  justify-content: center;
  gap: 28px;
  font-size: 13px;
  color: var(--ink-2);
}

.site-nav-link {
  text-decoration: none;
  color: var(--ink-2);
  padding-bottom: 2px;
  border-bottom: 0.5px solid transparent;
}

.site-nav-link.is-active {
  color: var(--ink);
  border-bottom-color: var(--ink);
}

.header-ctas {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ─────────────────────────────────────────────────────────────────────
   Buttons (pills + primary + ghost + accent)
   ───────────────────────────────────────────────────────────────────── */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  font-family: var(--sans);
  font-size: 12px;
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--rad);
}

.pill--ink {
  background: var(--ink);
  color: var(--paper);
  border: 0.5px solid var(--ink);
}

.pill--accent {
  background: transparent;
  color: var(--accent-ink);
  border: 0.5px solid var(--accent);
}

.btn-primary,
.btn-ghost,
.btn-accent {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border-radius: var(--rad);
  font-family: var(--sans);
  text-decoration: none;
  transition: background 0.15s ease, transform 0.15s ease;
  cursor: pointer;
}

.btn-primary {
  background: var(--ink);
  color: var(--paper);
  border: 0.5px solid var(--ink);
  padding: 12px 18px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.01em;
}
.btn-primary:hover { background: var(--accent-ink); }

.btn-primary--lg {
  padding: 16px 22px;
  font-size: 15px;
  width: 100%;
}

.btn-ghost {
  background: transparent;
  color: var(--ink);
  border: 0.5px solid var(--rule-2);
  padding: 10px 14px;
  font-size: 13px;
  font-weight: 500;
}
.btn-ghost:hover { background: var(--paper-2); }

.btn-accent {
  background: var(--accent);
  color: white;
  border: 0.5px solid var(--accent-ink);
  padding: 14px 18px;
  font-size: 14px;
  font-weight: 600;
  min-width: 240px;
  justify-content: space-between;
}

.arrow { flex: 0 0 12px; }

/* ─────────────────────────────────────────────────────────────────────
   Hero
   ───────────────────────────────────────────────────────────────────── */
.hero {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 48px;
  align-items: end;
  padding: 56px 0 36px;
  border-bottom: 0.5px solid var(--rule);
}

.hero-eyebrow { margin-bottom: 14px; }

.hero-title {
  margin: 0;
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(40px, 5.6vw, 72px);
  line-height: 1.0;
  letter-spacing: -0.02em;
  text-wrap: balance;
  max-width: 18ch;
}

.hero-body {
  margin: 20px 0 0;
  color: var(--ink-2);
  font-size: 16px;
  max-width: 54ch;
  line-height: 1.6;
}

.hero-ctas {
  display: flex;
  gap: 14px;
  margin-top: 28px;
  flex-wrap: wrap;
}

.hero-stack {
  position: relative;
  height: 360px;
  width: 100%;
}

.hero-stack-item {
  position: absolute;
  transform-origin: center;
}
.hero-stack-item--1 { left: 0%;  top: 10%; transform: rotate(-8deg); z-index: 1; }
.hero-stack-item--2 { left: 18%; top: 22%; transform: rotate(3deg);  z-index: 2; }
.hero-stack-item--3 { left: 38%; top: 4%;  transform: rotate(-2deg); z-index: 4; }
.hero-stack-item--4 { left: 58%; top: 26%; transform: rotate(6deg);  z-index: 3; }
.hero-stack-item--5 { left: 76%; top: 12%; transform: rotate(-4deg); z-index: 2; }

/* ─────────────────────────────────────────────────────────────────────
   Filter bar
   ───────────────────────────────────────────────────────────────────── */
.filter-bar {
  position: sticky;
  top: 0;
  z-index: 5;
  background: var(--paper);
  padding: 18px 0;
  border-bottom: 0.5px solid var(--rule);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.filter-chips {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
}

.chip {
  appearance: none;
  border: 0;
  background: transparent;
  font-family: var(--sans);
  font-size: 13px;
  font-weight: 400;
  color: var(--ink-2);
  padding: 6px 12px;
  border-radius: 999px;
  cursor: pointer;
}

.chip.is-active {
  background: var(--ink);
  color: var(--paper);
  font-weight: 600;
}

.filter-sort {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: var(--ink-2);
}

.filter-sort select {
  appearance: none;
  border: 0.5px solid var(--rule-2);
  background: transparent;
  font-family: var(--sans);
  font-size: 13px;
  color: var(--ink);
  padding: 6px 28px 6px 10px;
  border-radius: var(--rad);
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'><path fill='rgba(0,0,0,.5)' d='M0 0h10L5 6z'/></svg>");
  background-repeat: no-repeat;
  background-position: right 8px center;
  cursor: pointer;
}

/* ─────────────────────────────────────────────────────────────────────
   Book grid + card
   ───────────────────────────────────────────────────────────────────── */
.book-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  column-gap: 36px;
  row-gap: 36px;
  padding: 36px 0 16px;
}

.book-card {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 12px 0 22px;
  text-decoration: none;
  color: inherit;
  cursor: pointer;
}

.book-card-cover {
  display: flex;
  justify-content: center;
  padding: 8px 0;
}

.book-card-cover .book-cover {
  transition: transform 0.25s ease;
}
.book-card:hover .book-cover { transform: translateY(-2px); }

.book-card-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.book-card-condition { color: var(--ink-2); }

.book-card-title {
  margin: 0;
  font-family: var(--serif);
  font-weight: 500;
  font-size: 19px;
  line-height: 1.2;
  letter-spacing: -0.005em;
  text-wrap: balance;
}

.book-card-author {
  font-size: 13px;
  color: var(--ink-2);
  font-style: italic;
  font-family: var(--serif);
}

.book-card-foot {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
}

.book-card-price {
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 500;
}

.book-card-view {
  font-family: var(--sans);
  font-size: 12px;
  font-weight: 600;
  color: var(--accent-ink);
  letter-spacing: 0.02em;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  color: var(--ink-2);
  font-size: 16px;
  padding: 64px 0;
}

/* ─────────────────────────────────────────────────────────────────────
   Pango strip
   ───────────────────────────────────────────────────────────────────── */
.pango-strip {
  border-top: 0.5px solid var(--rule-2);
  border-bottom: 0.5px solid var(--rule-2);
  padding: 44px 0;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 32px;
  align-items: center;
}

.pango-strip-eyebrow { margin-bottom: 8px; }

.pango-strip-headline {
  margin: 0;
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(28px, 3.4vw, 40px);
  line-height: 1.1;
  letter-spacing: -0.01em;
  text-wrap: balance;
  max-width: 28ch;
}

.pango-strip-body {
  margin: 12px 0 0;
  color: var(--ink-2);
  font-size: 15px;
  max-width: 60ch;
}

.pango-strip-cta {
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: stretch;
}

.pango-strip-handle { text-align: right; }

/* ─────────────────────────────────────────────────────────────────────
   Trust strip
   ───────────────────────────────────────────────────────────────────── */
.trust-strip {
  padding: 44px 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.trust-strip > div .mono { margin-bottom: 8px; }

.trust-strip p {
  margin: 0;
  font-size: 14px;
  color: var(--ink-2);
  line-height: 1.5;
}

/* ─────────────────────────────────────────────────────────────────────
   Footer
   ───────────────────────────────────────────────────────────────────── */
.site-footer {
  border-top: 0.5px solid var(--rule);
  margin-top: 80px;
  padding: 36px 0 48px;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 32px;
  font-size: 13px;
  color: var(--ink-2);
}

.footer-tagline {
  margin: 10px 0 0;
  max-width: 36ch;
}

.footer-meta {
  margin: 10px 0 0;
  color: var(--ink-3);
}

.footer-col-title { margin-bottom: 8px; }

.footer-link {
  display: block;
  color: var(--ink-2);
  text-decoration: none;
  padding: 3px 0;
}

/* ─────────────────────────────────────────────────────────────────────
   Product page
   ───────────────────────────────────────────────────────────────────── */
.product {
  padding: 32px 0 0;
}

.breadcrumb {
  font-size: 12px;
  color: var(--ink-3);
  display: flex;
  gap: 8px;
  align-items: center;
  margin-bottom: 28px;
}

.breadcrumb a {
  color: var(--ink-2);
  text-decoration: none;
}

.breadcrumb-current { color: var(--ink-2); }

.product-split {
  display: grid;
  grid-template-columns: 1fr 1.05fr;
  gap: 72px;
  padding: 12px 0 56px;
  align-items: start;
}

.product-cover {
  display: flex;
  justify-content: center;
  padding-top: 12px;
  position: sticky;
  top: 32px;
}

.product-details {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.product-meta { margin-bottom: 12px; }

.product-title {
  margin: 0;
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(34px, 4vw, 52px);
  line-height: 1.05;
  letter-spacing: -0.015em;
  text-wrap: balance;
}

.product-author {
  margin-top: 10px;
  font-family: var(--serif);
  font-style: italic;
  font-size: 20px;
  color: var(--ink-2);
}

.product-blurb {
  margin: 0;
  font-size: 16px;
  color: var(--ink-2);
  line-height: 1.6;
  max-width: 52ch;
  text-wrap: pretty;
}

.price-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  padding: 20px 0;
  border-top: 0.5px solid var(--rule);
  border-bottom: 0.5px solid var(--rule);
}

.price-block-label { margin-bottom: 6px; }

.price-value {
  font-family: var(--serif);
  font-size: 36px;
  font-weight: 500;
  letter-spacing: -0.01em;
}

.price-shipping,
.mono-line {
  font-size: 12px;
  color: var(--ink-3);
  margin-top: 4px;
}

.condition-line {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  line-height: 1.2;
}

.condition-label {
  font-family: var(--serif);
  font-size: 17px;
  font-style: italic;
  white-space: nowrap;
}

.condition-note {
  font-size: 12px;
  color: var(--ink-2);
  margin: 8px 0 0;
  line-height: 1.5;
  max-width: 36ch;
}

.cta-stack {
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: stretch;
}

.sold-by {
  text-align: center;
  margin-top: 4px;
  letter-spacing: 0.04em;
}

/* Condition pips */
.pips {
  display: inline-flex;
  gap: 3px;
  vertical-align: middle;
}

.pip {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: transparent;
  border: 0.5px solid var(--ink);
  opacity: 0.35;
}

.pip.is-filled {
  background: var(--ink);
  opacity: 1;
}

/* Details block */
.details-block {
  border-top: 0.5px solid var(--rule);
  padding: 44px 0;
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 64px;
}

.details-eyebrow { margin-bottom: 14px; }

.details-heading {
  margin: 0;
  font-family: var(--serif);
  font-weight: 500;
  font-size: 30px;
  letter-spacing: -0.01em;
  text-wrap: balance;
  max-width: 20ch;
}

.details-blurb {
  margin-top: 14px;
  color: var(--ink-2);
  font-size: 14px;
  line-height: 1.6;
  max-width: 44ch;
}

.details-table {
  margin: 0;
  display: grid;
  grid-template-columns: 1fr 2fr;
  row-gap: 0;
  column-gap: 24px;
  align-self: start;
}

.details-table dt,
.details-table dd {
  padding: 14px 0;
  border-top: 0.5px solid var(--rule);
}

.details-table dt {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink-3);
}

.details-table dd {
  margin: 0;
  font-family: var(--sans);
  font-size: 14px;
  color: var(--ink);
}

/* Related */
.related {
  padding: 56px 0 24px;
  border-top: 0.5px solid var(--rule);
}

.related-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 28px;
}

.related-title {
  margin: 0;
  font-family: var(--serif);
  font-weight: 500;
  font-size: 28px;
  letter-spacing: -0.01em;
}

.related-link {
  font-size: 13px;
  color: var(--accent-ink);
  text-decoration: none;
  display: inline-flex;
  gap: 6px;
  align-items: center;
}

/* ─────────────────────────────────────────────────────────────────────
   Book cover (CSS placeholder, 8 variants)
   ───────────────────────────────────────────────────────────────────── */
.book-cover {
  background: var(--cover-bg);
  color: var(--cover-ink);
  position: relative;
  overflow: hidden;
  font-family: var(--serif);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.05) inset,
    0 12px 30px -16px rgba(0, 0, 0, 0.5),
    0 2px 4px rgba(0, 0, 0, 0.08);
}

.book-cover--sm { width: 96px;  height: 144px; padding: 8px;  font-size: 11px; }
.book-cover--md { width: 180px; height: 270px; padding: 14px; font-size: 18px; }
.book-cover--lg { width: 340px; height: 510px; padding: 28px; font-size: 32px; }

/* Real photo cover. Strip the padding the CSS-placeholder variants use
   so the image fills the cover frame edge-to-edge; the spine highlight
   still floats on top. object-fit: cover crops centered so a photo with
   any aspect ratio renders cleanly inside the 2:3 frame. */
.book-cover--photo { padding: 0; background: transparent; }
.book-cover-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.book-cover-spacer { flex: 1; }

.book-cover-title {
  font-weight: 500;
  line-height: 1.05;
  letter-spacing: 0.005em;
  text-wrap: balance;
}

.book-cover-title--italic {
  font-style: italic;
  font-weight: 600;
  line-height: 1;
}

.book-cover-title--centered { text-align: center; }

.book-cover-author {
  font-family: var(--sans);
  letter-spacing: 0.08em;
  opacity: 0.85;
  margin-top: 8px;
}

.book-cover-author--upper { text-transform: uppercase; }
.book-cover-author--italic { font-family: var(--serif); font-style: italic; }
.book-cover-author--mono { font-family: var(--mono); text-transform: uppercase; letter-spacing: 0.1em; }
.book-cover-author--centered { text-align: center; }

.book-cover--sm .book-cover-author { font-size: 9px; }
.book-cover--md .book-cover-author { font-size: 11px; }
.book-cover--lg .book-cover-author { font-size: 16px; }

.book-cover-accent-line {
  background: var(--cover-accent);
  height: 2px;
  width: 100%;
  margin-bottom: 8px;
}
.book-cover-accent-line--short { width: 30%; }

.book-cover-genre {
  font-family: var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--cover-accent);
  font-size: 0.6em;
}

.book-cover-publisher {
  font-family: var(--sans);
  text-transform: uppercase;
  letter-spacing: 0.22em;
  opacity: 0.7;
  text-align: center;
  font-size: 0.5em;
}

.book-cover-rule-block {
  text-align: center;
  border-top: 0.5px solid var(--cover-accent);
  border-bottom: 0.5px solid var(--cover-accent);
  padding: 12px 0;
}

.book-cover-block-title {
  background: var(--cover-accent);
  color: var(--cover-bg);
  padding: 8px 10px;
  margin: 0 -14px 8px -14px;
  font-weight: 600;
  line-height: 1;
  text-wrap: balance;
  font-size: 0.85em;
}

.book-cover-horizon-rule {
  border-top: 0.5px solid var(--cover-accent);
}
.book-cover-horizon-rule--1 { opacity: 0.7; margin-top: 6px; }
.book-cover-horizon-rule--2 { opacity: 0.4; margin: 5px 40% 0 0; }
.book-cover-horizon-rule--3 { opacity: 0.25; margin: 5px 65% 0 0; }

.book-cover-orbit {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    radial-gradient(circle at 78% 28%, var(--cover-accent) 0 12px, transparent 13px),
    radial-gradient(circle at 78% 28%, transparent 32px, color-mix(in oklab, var(--cover-accent) 20%, transparent) 33px, transparent 34px);
}

.book-cover-type-title {
  font-weight: 600;
  letter-spacing: -0.01em;
  text-transform: uppercase;
  text-wrap: balance;
  color: var(--cover-accent);
  font-family: var(--sans);
  line-height: 0.95;
  font-size: 1.3em;
}

.book-cover-spine {
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(90deg, rgba(0, 0, 0, 0.18), rgba(0, 0, 0, 0));
  pointer-events: none;
}

/* ─────────────────────────────────────────────────────────────────────
   Responsive
   ───────────────────────────────────────────────────────────────────── */
@media (max-width: 1023px) {
  .book-grid { grid-template-columns: repeat(3, 1fr); column-gap: 28px; row-gap: 28px; }
  .product-split { grid-template-columns: 1fr; gap: 36px; }
  .product-cover { position: static; }
  .details-block { grid-template-columns: 1fr; gap: 28px; }
}

@media (max-width: 767px) {
  .page { padding: 0 20px; }
  .site-header { grid-template-columns: 1fr; gap: 12px; }
  .site-nav { justify-content: flex-start; }
  .header-ctas { justify-content: flex-start; flex-wrap: wrap; }
  .hero { grid-template-columns: 1fr; gap: 24px; padding: 36px 0 24px; }
  .hero-stack { display: none; }
  .filter-bar { flex-direction: column; align-items: flex-start; }
  .book-grid { grid-template-columns: repeat(2, 1fr); column-gap: 16px; row-gap: 24px; }
  .pango-strip { grid-template-columns: 1fr; gap: 20px; }
  .btn-accent { min-width: 0; }
  .trust-strip { grid-template-columns: 1fr; gap: 20px; padding: 28px 0; }
  .site-footer { grid-template-columns: 1fr 1fr; gap: 24px; }
  .price-block { grid-template-columns: 1fr; }
}