/* ==========================================================================
   Kitaably — shared stylesheet
   Palette: paper & ink, with a small family of muted, earthy accent colors
   used to color-code genres throughout the site.
   ========================================================================== */

:root {
  --paper: #F6F2E7;
  --paper-alt: #FBF9F3;
  --ink: #22221D;
  --ink-soft: #58554C;
  --ink-faint: #8A8577;
  --line: #DDD5C1;
  --line-strong: #C7BCA3;
  --green: #2F4538;
  --green-deep: #1E2C24;
  --brass: #A67C3D;
  --c-fiction: #3E6259;
  --c-historical: #A67C3D;
  --c-dystopian: #2C3A4B;
  --c-thriller: #5B4468;
  --c-classic: #2F4538;
  --c-fantasy: #8B4A3C;
  --c-romance: #8B4A57;
  --radius-s: 3px;
  --radius-m: 6px;
  --shadow-cover: 0 10px 24px -12px rgba(34, 34, 29, 0.35);
  --shadow-card: 0 1px 0 rgba(34, 34, 29, 0.06);
  --maxw: 1160px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Public Sans", -apple-system, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4 {
  font-family: "Fraunces", Georgia, serif;
  font-weight: 560;
  line-height: 1.12;
  margin: 0 0 0.5em;
  color: var(--ink);
  letter-spacing: -0.01em;
}
p { margin: 0 0 1em; color: var(--ink-soft); max-width: 62ch; }
a { color: inherit; }
img { max-width: 100%; display: block; }
button { font-family: inherit; }
.container { max-width: var(--maxw); margin: 0 auto; padding: 0 28px; }
:focus-visible { outline: 2px solid var(--brass); outline-offset: 3px; }
.sr-only {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: var(--radius-s);
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color 0.18s ease, border-color 0.18s ease, color 0.18s ease;
}
.btn--primary { background: var(--green); color: var(--paper-alt); }
.btn--primary:hover { background: var(--green-deep); }
.btn--ghost { background: transparent; border-color: var(--ink); color: var(--ink); }
.btn--ghost:hover { background: var(--ink); color: var(--paper-alt); }
.btn--small { padding: 9px 16px; font-size: 13.5px; }
.btn--text { background: none; border: none; padding: 0; color: var(--green); font-weight: 600; font-size: 14.5px; border-bottom: 1px solid var(--green); border-radius: 0; }
.btn--text:hover { color: var(--green-deep); border-color: var(--green-deep); }

.site-header { position: sticky; top: 0; z-index: 40; background: rgba(246, 242, 231, 0.92); backdrop-filter: blur(6px); border-bottom: 1px solid var(--line); }
.site-header .container { display: flex; align-items: center; justify-content: space-between; height: 76px; }
.logo { font-family: "Fraunces", Georgia, serif; font-size: 23px; font-weight: 620; text-decoration: none; letter-spacing: -0.01em; color: var(--ink); }
.nav-menu { display: flex; align-items: center; gap: 36px; list-style: none; margin: 0; padding: 0; }
.nav-menu a { text-decoration: none; font-size: 15px; font-weight: 500; color: var(--ink-soft); padding-bottom: 3px; border-bottom: 1px solid transparent; transition: color 0.15s ease, border-color 0.15s ease; }
.nav-menu a:hover, .nav-menu a[aria-current="page"] { color: var(--ink); border-color: var(--brass); }
.nav-toggle { display: none; width: 34px; height: 34px; border: none; background: none; cursor: pointer; padding: 0; position: relative; }
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after { content: ""; position: absolute; left: 6px; right: 6px; height: 2px; background: var(--ink); transition: transform 0.2s ease, opacity 0.2s ease; }
.nav-toggle span { top: 16px; }
.nav-toggle span::before { top: -8px; }
.nav-toggle span::after { top: 8px; }
.nav-toggle[aria-expanded="true"] span { background: transparent; }
.nav-toggle[aria-expanded="true"] span::before { transform: translateY(8px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span::after { transform: translateY(-8px) rotate(-45deg); }

.nav-list-count {
  display: inline-flex;
  min-width: 18px;
  height: 18px;
  padding: 0 5px;
  align-items: center;
  justify-content: center;
  margin-left: 4px;
  border-radius: 999px;
  background: var(--brass);
  color: var(--paper-alt);
  font-size: 10px;
  font-weight: 700;
  line-height: 1;
  vertical-align: middle;
}

.hero { padding: 76px 0 88px; }
.hero .container { display: flex; align-items: center; gap: 64px; }
.hero__content { flex: 1 1 480px; max-width: 560px; }
.hero__eyebrow { font-family: "Fraunces", serif; font-style: italic; color: var(--brass); font-size: 17px; margin: 0 0 14px; }
.hero__content h1 { font-size: clamp(38px, 5vw, 56px); margin-bottom: 22px; }
.hero__content p { font-size: 18px; margin-bottom: 32px; }
.hero__actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero__shelf { flex: 1 1 320px; display: flex; justify-content: center; align-items: flex-end; gap: 22px; min-height: 300px; position: relative; }
.hero__shelf::after { content: ""; position: absolute; left: 6%; right: 6%; bottom: 18px; height: 10px; background: linear-gradient(180deg, var(--line-strong), transparent); border-radius: 50%; filter: blur(2px); opacity: 0.6; }

.cover { --cover-color: var(--green); width: 140px; aspect-ratio: 2 / 3; background: var(--cover-color); border-radius: 2px 5px 5px 2px; box-shadow: var(--shadow-cover), inset -3px 0 0 rgba(0,0,0,0.18); color: var(--paper-alt); display: flex; flex-direction: column; justify-content: space-between; padding: 16px 14px; position: relative; flex-shrink: 0; }
.cover::before { content: ""; position: absolute; left: 6px; top: 0; bottom: 0; width: 1px; background: rgba(255,255,255,0.22); }
.cover__title { font-family: "Fraunces", serif; font-weight: 560; font-size: 15px; line-height: 1.2; }
.cover__author { font-size: 10.5px; letter-spacing: 0.02em; opacity: 0.85; }
.cover--fiction { --cover-color: var(--c-fiction); }
.cover--historical { --cover-color: var(--c-historical); }
.cover--dystopian { --cover-color: var(--c-dystopian); }
.cover--thriller { --cover-color: var(--c-thriller); }
.cover--classic { --cover-color: var(--c-classic); }
.cover--fantasy { --cover-color: var(--c-fantasy); }
.cover--romance { --cover-color: var(--c-romance); }
.hero__shelf .cover:nth-child(1) { transform: rotate(-6deg); }
.hero__shelf .cover:nth-child(2) { transform: translateY(-18px) rotate(3deg); width: 128px; }
.hero__shelf .cover:nth-child(3) { transform: rotate(8deg); width: 118px; }

.section { padding: 84px 0; }
.section--tight { padding: 64px 0; }
.section--alt { background: var(--paper-alt); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section__head { display: flex; justify-content: space-between; align-items: flex-end; gap: 24px; margin-bottom: 40px; flex-wrap: wrap; }
.section__head h2 { font-size: clamp(28px, 3.4vw, 36px); }
.section__head p { margin: 8px 0 0; }

.card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 28px; }
.book-card { position: relative; background: var(--paper-alt); border: 1px solid var(--line); border-radius: var(--radius-m); padding: 22px; display: flex; gap: 18px; text-decoration: none; color: inherit; transition: border-color 0.15s ease, box-shadow 0.15s ease; }
.book-card:hover { border-color: var(--brass); box-shadow: 0 6px 18px -12px rgba(34, 34, 29, 0.35); }
.book-card__body { display: flex; flex-direction: column; min-width: 0; flex: 1; }
.book-card__genre { font-size: 12px; font-weight: 600; color: var(--brass); margin-bottom: 6px; }
.book-card__title { font-family: "Fraunces", serif; font-size: 19px; font-weight: 560; margin: 0 0 2px; line-height: 1.25; }
.book-card__author { font-size: 13.5px; color: var(--ink-faint); margin-bottom: 10px; }
.rating { font-size: 13px; color: var(--ink-soft); margin-bottom: 12px; display: flex; align-items: center; gap: 6px; }
.rating__stars { color: var(--brass); letter-spacing: 1px; }
.book-card__desc { font-size: 14.5px; margin-bottom: 14px; flex: 1; }
.book-card__review { display: none; font-size: 13.5px; color: var(--ink-soft); background: var(--paper); border-left: 2px solid var(--brass); padding: 10px 12px; margin: 0 0 14px; }
.book-card__review.is-open { display: block; }

.reading-list-button {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 34px;
  height: 34px;
  padding: 0;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  background: var(--paper-alt);
  color: var(--ink-soft);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 21px;
  line-height: 1;
  z-index: 2;
  transition: transform 0.15s ease, background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}
.reading-list-button:hover { transform: scale(1.06); border-color: var(--brass); color: var(--brass); }
.reading-list-button.is-saved { background: var(--brass); border-color: var(--brass); color: var(--paper-alt); }
.reading-list-button .reading-list-icon { display: block; transform: translateY(-1px); }
.reading-list-detail-button { margin-top: 8px; margin-bottom: 4px; }

.genre-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 14px; }
.genre-tile { display: block; text-decoration: none; padding: 20px 20px 18px; border-radius: var(--radius-s); color: var(--paper-alt); font-family: "Fraunces", serif; font-size: 18px; font-weight: 560; position: relative; overflow: hidden; }
.genre-tile span { display: block; font-family: "Public Sans", sans-serif; font-size: 12.5px; font-weight: 500; color: rgba(255,255,255,0.75); margin-top: 4px; }
.why-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 40px; }
.why-item svg { width: 34px; height: 34px; margin-bottom: 16px; color: var(--green); }
.why-item h3 { font-size: 20px; margin-bottom: 8px; }
.why-item p { font-size: 14.5px; }
.latest-list { display: flex; flex-direction: column; }
.latest-item { display: flex; gap: 22px; align-items: center; padding: 22px 0; border-top: 1px solid var(--line); text-decoration: none; color: inherit; transition: background-color 0.15s ease; }
.latest-item:hover { background-color: var(--paper); }
.latest-item:last-child { border-bottom: 1px solid var(--line); }
.latest-item .cover { width: 72px; box-shadow: none; }
.latest-item .cover .cover__title { font-size: 10.5px; }
.latest-item .cover .cover__author { font-size: 8.5px; }
.latest-item__body { flex: 1; min-width: 0; }
.latest-item__title { font-family: "Fraunces", serif; font-size: 18px; margin: 0 0 2px; }
.latest-item__meta { font-size: 12.5px; color: var(--ink-faint); margin-bottom: 8px; }
.latest-item__desc { font-size: 14px; margin: 0; }

.newsletter { background: var(--green); color: var(--paper-alt); padding: 68px 0; }
.newsletter .container { max-width: 680px; text-align: center; }
.newsletter h2 { color: var(--paper-alt); font-size: clamp(26px, 3vw, 32px); }
.newsletter p { color: rgba(251,249,243,0.82); margin: 0 auto 28px; }
.newsletter-form { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; }
.newsletter-form input[type="email"] { flex: 1 1 260px; padding: 13px 16px; border-radius: var(--radius-s); border: 1px solid rgba(251,249,243,0.35); background: rgba(251,249,243,0.08); color: var(--paper-alt); font-size: 15px; }
.newsletter-form input::placeholder { color: rgba(251,249,243,0.6); }
.newsletter-form .btn--primary { background: var(--brass); color: var(--ink); }
.newsletter-form .btn--primary:hover { background: #B98F4D; }
.newsletter-note { font-size: 13px; margin-top: 14px; color: rgba(251,249,243,0.7); }

.site-footer { padding: 44px 0; border-top: 1px solid var(--line); }
.site-footer .container { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 18px; }
.site-footer .logo { font-size: 19px; }
.site-footer p { margin: 4px 0 0; font-size: 13.5px; }
.footer-links { display: flex; gap: 26px; list-style: none; margin: 0; padding: 0; }
.footer-links a { text-decoration: none; font-size: 14px; color: var(--ink-soft); }
.footer-links a:hover { color: var(--ink); }

.page-head { padding: 56px 0 40px; }
.page-head h1 { font-size: clamp(32px, 4.4vw, 44px); }
.page-head p { font-size: 17px; }
.toolbar { margin-bottom: 40px; }
.search-bar { position: relative; margin-bottom: 24px; }
.search-bar input { width: 100%; padding: 14px 4px; font-size: 17px; font-family: "Fraunces", serif; border: none; border-bottom: 1px solid var(--line-strong); background: transparent; color: var(--ink); }
.search-bar input::placeholder { color: var(--ink-faint); }
.search-bar input:focus { outline: none; border-color: var(--green); }
.filters { display: flex; flex-wrap: wrap; gap: 28px; align-items: baseline; }
.filter-group { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.filter-group__label { font-size: 12px; font-weight: 600; color: var(--ink-faint); margin-right: 2px; text-transform: uppercase; letter-spacing: 0.06em; }
.filter-btn { border: 1px solid var(--line); background: transparent; color: var(--ink-soft); padding: 7px 10px; border-radius: 999px; font-size: 13px; cursor: pointer; }
.filter-btn:hover, .filter-btn.is-active { color: var(--ink); border-color: var(--brass); background: var(--paper-alt); }
.results-count { min-height: 22px; font-size: 13px; color: var(--ink-faint); margin: 0 0 18px; }
.no-results { display: none; padding: 36px 0; color: var(--ink-faint); }
.no-results.is-visible { display: block; }

.book-detail-back { display: inline-block; margin: 34px 0 22px; color: var(--ink-soft); text-decoration: none; font-size: 14px; }
.book-detail-back:hover { color: var(--ink); }
.book-detail { display: grid; grid-template-columns: minmax(220px, 320px) minmax(0, 1fr); gap: 56px; padding: 22px 0 88px; align-items: start; }
.book-detail__cover-col { position: sticky; top: 112px; }
.book-detail__cover-col .cover { width: min(100%, 290px); margin: 0 auto; }
.book-detail__genre { font-size: 12px; font-weight: 600; color: var(--brass); text-transform: uppercase; letter-spacing: 0.06em; }
.book-detail__title { font-size: clamp(36px, 5vw, 54px); margin-bottom: 8px; }
.book-detail__author { font-family: "Fraunces", serif; font-size: 18px; color: var(--ink-soft); margin-bottom: 28px; }
.book-detail__meta { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1px; margin: 0 0 32px; background: var(--line); border: 1px solid var(--line); }
.book-detail__meta > div { background: var(--paper-alt); padding: 14px 16px; }
.book-detail__meta dt { font-size: 11px; color: var(--ink-faint); text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 4px; }
.book-detail__meta dd { margin: 0; font-size: 14px; color: var(--ink); }
.book-detail__section { margin-bottom: 30px; }
.book-detail__section h2 { font-size: 24px; margin-bottom: 10px; }
.book-detail__section p { font-size: 15px; }
.book-detail__not-found { padding: 80px 0; text-align: center; }
.book-detail__not-found p { margin-left: auto; margin-right: auto; }

.reading-list-page-head { padding-bottom: 28px; }
.reading-list-count { font-size: 13px; color: var(--ink-faint); margin-bottom: 24px; }
.reading-list-empty { padding: 56px 0 72px; text-align: center; }
.reading-list-empty h2 { font-size: clamp(26px, 3vw, 34px); margin-bottom: 10px; }
.reading-list-empty p { margin: 0 auto 22px; }

.cta-band { padding: 56px 0; }
.cta-band .container { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.cta-band h2 { margin: 0; }
.about-hero { padding: 70px 0 48px; }
.about-hero h1 { font-size: clamp(36px, 5vw, 52px); }
.about-hero p { font-size: 18px; max-width: 65ch; }
.about-body h2 { margin-top: 36px; }
.about-body > .container > h2:first-child { margin-top: 0; }
.pull { padding: 20px 22px; margin: 28px 0 34px; background: var(--paper-alt); border-left: 3px solid var(--brass); }
.pull p { margin: 0; font-family: "Fraunces", serif; font-size: 18px; color: var(--ink); }
.expect-list { padding-left: 20px; color: var(--ink-soft); }

@media (max-width: 780px) {
  .site-header .container { height: 68px; }
  .nav-toggle { display: block; }
  .nav-menu { position: absolute; left: 0; right: 0; top: 68px; display: none; flex-direction: column; align-items: stretch; gap: 0; padding: 8px 28px 18px; background: var(--paper); border-bottom: 1px solid var(--line); box-shadow: 0 8px 18px -16px rgba(34,34,29,0.45); }
  .nav-menu.is-open { display: flex; }
  .nav-menu li { padding: 0; }
  .nav-menu a { display: block; padding: 12px 0; border-bottom: 1px solid var(--line); }
  .nav-menu li:last-child a { border-bottom: none; }
  .hero { padding: 52px 0 64px; }
  .hero .container { flex-direction: column; gap: 44px; align-items: stretch; }
  .hero__shelf { min-height: 230px; }
  .hero__shelf .cover { width: 112px; }
  .hero__shelf .cover:nth-child(2) { width: 104px; }
  .hero__shelf .cover:nth-child(3) { width: 96px; }
  .section { padding: 64px 0; }
  .card-grid { grid-template-columns: 1fr; gap: 18px; }
  .book-card { padding: 18px; }
  .book-card .cover { width: 108px; }
  .book-detail { grid-template-columns: 1fr; gap: 34px; padding-bottom: 64px; }
  .book-detail__cover-col { position: static; }
  .book-detail__cover-col .cover { width: min(220px, 100%); }
  .book-detail__title { font-size: 38px; }
  .cta-band .container { align-items: flex-start; flex-direction: column; }
  .site-footer .container { align-items: flex-start; flex-direction: column; }
}

@media (max-width: 500px) {
  .container { padding: 0 18px; }
  .filters { gap: 18px; }
  .book-card { gap: 14px; }
  .book-card .cover { width: 94px; }
  .book-card__title { font-size: 18px; }
  .book-card__desc { font-size: 14px; }
  .reading-list-button { top: 9px; right: 9px; width: 32px; height: 32px; font-size: 19px; }
  .book-detail__meta { grid-template-columns: 1fr; }
  .footer-links { gap: 16px; flex-wrap: wrap; }
}