:root {
  --ink: #12181f;
  --ink-soft: #1c2430;
  --ink-softer: #242e3b;
  --paper: #f1e9d8;
  --paper-dim: #c9bfa9;
  --oxblood: #9a3b2e;
  --oxblood-bright: #c24a38;
  --mustard: #c9a227;
  --moss: #6c7a54;
  --line: rgba(241, 233, 216, 0.14);
  --shadow: 0 20px 45px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  min-height: 100vh;
  background: var(--ink);
  color: var(--paper);
  font-family: "Source Sans 3", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
button, input { font: inherit; }
button { cursor: pointer; }
button:focus-visible, a:focus-visible, input:focus-visible {
  outline: 2px solid var(--mustard);
  outline-offset: 3px;
}
.wrap { width: min(1180px, calc(100% - 64px)); margin-inline: auto; }
h1, h2, h3 { font-family: "Fraunces", serif; font-weight: 500; letter-spacing: -0.01em; }
.eyebrow {
  color: var(--mustard);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.note { color: var(--mustard); font-family: "Caveat", cursive; font-weight: 600; line-height: 1.3; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid var(--line);
  background: rgba(18, 24, 31, 0.92);
  backdrop-filter: blur(8px);
}
.nav-inner {
  width: min(1180px, calc(100% - 64px));
  min-height: 72px;
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}
.logo { display: inline-flex; align-items: center; gap: 9px; font: 600 1.35rem "Fraunces", serif; text-decoration: none; }
.logo-mark { width: 10px; height: 14px; background: var(--oxblood-bright); transform: skewX(-8deg); }
.nav-links { display: flex; align-items: center; gap: 30px; list-style: none; }
.nav-links a { color: var(--paper-dim); font-size: 0.9rem; text-decoration: none; }
.nav-links a:hover { color: var(--paper); }
.cart-btn, .outline-btn {
  border: 1px solid var(--line);
  border-radius: 2px;
  background: transparent;
  color: var(--paper);
  padding: 10px 16px;
  text-decoration: none;
}
.cart-count {
  display: inline-grid;
  min-width: 20px;
  min-height: 20px;
  margin-left: 7px;
  place-items: center;
  border-radius: 50%;
  background: var(--oxblood-bright);
  font: 0.7rem "IBM Plex Mono", monospace;
}

/* Shared buttons */
.btn-primary, .btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 24px;
  border-radius: 2px;
  font-weight: 600;
  text-decoration: none;
}
.btn-primary { border: 1px solid var(--oxblood-bright); background: var(--oxblood-bright); color: var(--paper); }
.btn-primary:hover { background: #d65940; border-color: #d65940; }
.btn-secondary { border: 1px solid var(--line); background: transparent; color: var(--paper); }
.btn-secondary:hover { border-color: var(--paper-dim); }

/* Home hero and shelf */
.home-hero { padding: 88px 0 96px; border-bottom: 1px solid var(--line); overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 64px; align-items: center; }
.home-hero h1 { max-width: 12ch; margin: 14px 0 22px; font-size: clamp(2.7rem, 6vw, 4.35rem); line-height: 1.02; }
.home-hero h1 em { color: var(--oxblood-bright); }
.lead { max-width: 47ch; color: var(--paper-dim); font-size: 1.12rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 30px; }
.shelf {
  min-height: 380px;
  display: flex;
  align-items: flex-end;
  gap: 7px;
  padding: 0 8px 18px;
  border-bottom: 6px solid #3a2a1e;
}
.spine {
  flex: 1;
  position: relative;
  min-width: 37px;
  border-radius: 2px 2px 0 0;
  box-shadow: inset -3px 0 6px rgba(0, 0, 0, 0.25);
  transition: transform 0.2s ease;
}
.spine:hover, .spine:focus-visible { transform: translateY(-10px); }
.spine span {
  position: absolute;
  bottom: 16px;
  left: 50%;
  width: max-content;
  max-width: 220px;
  transform: translateX(-50%) rotate(-90deg);
  color: rgba(241, 233, 216, 0.82);
  font: 0.68rem "IBM Plex Mono", monospace;
  letter-spacing: 0.04em;
}

/* Catalog */
.section { padding: 82px 0; }
.section-head { display: flex; justify-content: space-between; align-items: end; gap: 28px; margin-bottom: 38px; }
.section-head h2 { font-size: clamp(2rem, 4vw, 2.6rem); }
.section-head > p { max-width: 42ch; color: var(--paper-dim); }
.filters { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 34px; }
.filter-btn {
  padding: 8px 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: transparent;
  color: var(--paper-dim);
  font: 0.8rem "IBM Plex Mono", monospace;
}
.filter-btn.active { border-color: var(--moss); background: var(--moss); color: var(--paper); }
.book-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(245px, 1fr)); gap: 30px; }
.book-card {
  display: flex;
  flex-direction: column;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 3px;
  background: var(--ink-soft);
  transition: transform 0.2s ease, border-color 0.2s ease;
}
.book-card:hover { transform: translateY(-4px); border-color: var(--paper-dim); }
.cover-link { text-decoration: none; }
.cover {
  min-height: 205px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 17px;
  border-radius: 2px;
  box-shadow: inset 0 0 0 1px rgba(0,0,0,.15), 0 10px 20px rgba(0,0,0,.28);
}
.genre-tag, .status-tag { font: 0.68rem "IBM Plex Mono", monospace; letter-spacing: 0.08em; text-transform: uppercase; }
.cover-title { max-width: 13ch; font: 500 1.28rem/1.15 "Fraunces", serif; }
.card-author { margin-top: 17px; color: var(--paper-dim); font-size: 0.84rem; }
.card-title { margin: 3px 0 10px; font: 500 1.22rem "Fraunces", serif; }
.card-title a { text-decoration: none; }
.card-title a:hover { color: var(--mustard); }
.margin-note { margin-bottom: 18px; padding-left: 10px; border-left: 2px solid var(--mustard); font-size: 1rem; }
.card-footer { margin-top: auto; display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.price { font: 1rem "IBM Plex Mono", monospace; text-decoration: underline var(--oxblood-bright); text-underline-offset: 4px; }
.card-action { padding: 8px 13px; border: 1px solid var(--paper-dim); border-radius: 2px; background: transparent; color: var(--paper); text-decoration: none; font-size: 0.82rem; }
.card-action:hover { border-color: var(--oxblood-bright); background: var(--oxblood-bright); }
.coming-badge { color: var(--mustard); font: 0.76rem "IBM Plex Mono", monospace; text-transform: uppercase; }

/* Individual book landing page */
.book-hero { padding: 72px 0 82px; border-bottom: 1px solid var(--line); }
.book-layout { display: grid; grid-template-columns: minmax(260px, 0.72fr) 1.28fr; gap: clamp(44px, 8vw, 100px); align-items: center; }
.detail-cover {
  aspect-ratio: 0.72;
  width: min(100%, 380px);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 28px;
  border-radius: 3px;
  box-shadow: var(--shadow);
}
.detail-cover-title { max-width: 11ch; font: 500 clamp(2rem, 4vw, 3.1rem)/1.05 "Fraunces", serif; }
.book-copy h1 { margin: 13px 0 10px; font-size: clamp(2.5rem, 5vw, 4.6rem); line-height: 1.02; }
.book-author { color: var(--paper-dim); font-size: 1.08rem; }
.book-summary { max-width: 58ch; margin: 27px 0; color: var(--paper-dim); font-size: 1.08rem; }
.book-meta { display: grid; grid-template-columns: repeat(3, minmax(110px, 1fr)); max-width: 600px; margin: 30px 0; border-block: 1px solid var(--line); }
.meta-item { padding: 16px 18px 16px 0; }
.meta-label { display: block; color: var(--paper-dim); font: 0.68rem "IBM Plex Mono", monospace; letter-spacing: .1em; text-transform: uppercase; }
.meta-value { display: block; margin-top: 3px; }
.book-actions { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }
.book-note { margin-top: 28px; font-size: 1.25rem; transform: rotate(-1deg); }
.details-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 60px; }
.details-grid h2 { margin-bottom: 15px; font-size: 2rem; }
.details-grid p, .details-grid li { color: var(--paper-dim); }
.details-grid ul { padding-left: 20px; }
.detail-panel { padding: 28px; border: 1px solid var(--line); background: var(--ink-soft); }
.detail-panel h3 { margin-bottom: 12px; font-size: 1.45rem; }
.back-link { display: inline-block; margin-bottom: 24px; color: var(--paper-dim); text-decoration: none; }
.back-link:hover { color: var(--paper); }

/* Newsletter/footer/cart */
.newsletter { display: flex; align-items: center; justify-content: space-between; gap: 36px; padding: 42px; border: 1px solid var(--line); background: var(--ink-soft); }
.newsletter h2 { font-size: 2rem; }
.newsletter p { color: var(--paper-dim); }
.newsletter form { display: flex; flex-wrap: wrap; gap: 10px; }
.newsletter input { min-width: 230px; padding: 12px 15px; border: 1px solid var(--line); background: var(--ink); color: var(--paper); }
.form-message { min-height: 24px; margin-top: 8px; color: var(--mustard); font: 0.78rem "IBM Plex Mono", monospace; }
.site-footer { padding: 44px 0; border-top: 1px solid var(--line); color: var(--paper-dim); font-size: 0.85rem; }
.footer-inner { display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.overlay { position: fixed; inset: 0; z-index: 80; pointer-events: none; opacity: 0; background: rgba(0,0,0,.58); transition: opacity .2s ease; }
.overlay.open { pointer-events: auto; opacity: 1; }
.drawer { position: fixed; top: 0; right: 0; z-index: 90; width: min(410px, 94vw); height: 100%; display: flex; flex-direction: column; transform: translateX(100%); border-left: 1px solid var(--line); background: var(--ink-soft); transition: transform .25s ease; }
.drawer.open { transform: translateX(0); }
.drawer-head, .drawer-foot { padding: 22px; border-bottom: 1px solid var(--line); }
.drawer-head { display: flex; justify-content: space-between; }
.drawer-foot { margin-top: auto; border-top: 1px solid var(--line); border-bottom: 0; }
.close-btn { border: 0; background: none; color: var(--paper); font-size: 1.6rem; }
.drawer-items { padding: 8px 22px; overflow-y: auto; }
.drawer-item { display: grid; grid-template-columns: 42px 1fr auto; gap: 12px; align-items: center; padding: 15px 0; border-bottom: 1px solid var(--line); }
.mini-cover { width: 42px; height: 58px; }
.drawer-title { font: 500 .95rem "Fraunces", serif; }
.drawer-author { color: var(--paper-dim); font-size: .73rem; }
.drawer-price { font: .8rem "IBM Plex Mono", monospace; }
.remove-btn { border: 0; background: none; color: var(--paper-dim); font-size: .72rem; text-decoration: underline; }
.empty-cart { padding: 35px 0; color: var(--paper-dim); text-align: center; }
.total-row { display: flex; justify-content: space-between; margin-bottom: 14px; font-family: "IBM Plex Mono", monospace; }
.full-width { width: 100%; }
.toast { position: fixed; bottom: 24px; left: 50%; z-index: 100; transform: translate(-50%, 20px); pointer-events: none; opacity: 0; padding: 12px 20px; border-radius: 2px; background: var(--paper); color: var(--ink); transition: .2s ease; }
.toast.show { transform: translate(-50%, 0); opacity: 1; }

@media (max-width: 860px) {
  .hero-grid, .book-layout, .details-grid { grid-template-columns: 1fr; }
  .shelf { min-height: 290px; }
  .nav-links { display: none; }
  .book-layout { justify-items: center; }
  .book-copy { width: 100%; }
  .newsletter { align-items: flex-start; flex-direction: column; }
}
@media (max-width: 560px) {
  .wrap, .nav-inner { width: min(100% - 32px, 1180px); }
  .home-hero, .book-hero { padding-top: 52px; }
  .section { padding: 62px 0; }
  .section-head { align-items: start; flex-direction: column; }
  .book-meta { grid-template-columns: 1fr; }
  .meta-item + .meta-item { border-top: 1px solid var(--line); }
  .newsletter { padding: 28px 22px; }
  .newsletter input { min-width: 100%; width: 100%; }
  .logo { font-size: 1.1rem; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; }
}



.epub-dropdown {
  position: relative;
  list-style: none;
}

.epub-dropdown details {
  position: relative;
}

.epub-dropdown summary {
  color: var(--paper-dim);
  font-size: 14px;
  cursor: pointer;
  list-style: none;
  user-select: none;
}

.epub-dropdown summary::-webkit-details-marker {
  display: none;
}

.epub-dropdown summary::after {
  content: " ▾";
  color: var(--mustard);
}

.epub-dropdown details[open] summary::after {
  content: " ▴";
}

.epub-menu {
  position: absolute;
  top: calc(100% + 18px);
  left: 50%;
  z-index: 100;
  min-width: 285px;
  padding: 6px 0;
  transform: translateX(-50%);
  border: 1px solid var(--line);
  background: var(--ink-soft);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.35);
}

.epub-menu a {
  display: block;
  padding: 11px 16px;
  color: var(--paper-dim);
  font-size: 13px;
  text-decoration: none;
  white-space: nowrap;
}

.epub-menu a:hover,
.epub-menu a:focus-visible {
  color: var(--paper);
  background: var(--ink-softer);
}

@media (max-width: 860px) {
  .epub-menu {
    position: static;
    min-width: 100%;
    margin-top: 10px;
    transform: none;
    box-shadow: none;
  }
}