/* ============================================================
   Paperwhite design system
   Warm paper, warm ink, one amber accent used only as a spark —
   never a fill. Literata for reading, Inter for the device chrome
   around it. No rounded-corner card kit, no drop shadows: surfaces
   are separated by hairline rules the way pages and spines are.
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Literata:ital,opsz,wght@0,7..72,400;0,7..72,500;0,7..72,600;1,7..72,400&family=Inter:wght@400;500;600&display=swap');

:root {
  --paper: #f6f3ec;
  --paper-raised: #ede9df;
  --paper-line: #e2ddd0;
  --ink: #2a2822;
  --ink-soft: #726c60;
  --ink-faint: #a39c8c;
  --rule: #dad4c4;
  --accent: #9a6324;
  --accent-soft: #c9a06b;

  --g-romance: #a65d6e;
  --g-mystery_thriller: #52657a;
  --g-fantasy: #57724f;
  --g-sci_fi: #3f7a82;
  --g-literary_fiction: #8a7048;
  --g-horror: #7a4638;

  --font-read: 'Literata', Georgia, 'Times New Roman', serif;
  --font-ui: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --measure: 34rem;
  --radius: 2px;
}

[data-theme="night"] {
  --paper: #1d1c19;
  --paper-raised: #262420;
  --paper-line: #333029;
  --ink: #e7e2d4;
  --ink-soft: #a39c8c;
  --ink-faint: #6f6a5d;
  --rule: #3a362d;
  --accent: #c9a06b;
  --accent-soft: #9a6324;
}

* { box-sizing: border-box; }

html { -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-ui);
  transition: background 0.25s ease, color 0.25s ease;
}

a { color: inherit; text-decoration: none; }

button {
  font-family: var(--font-ui);
  background: none;
  border: 1px solid var(--rule);
  color: var(--ink);
  border-radius: var(--radius);
  cursor: pointer;
}
button:hover { border-color: var(--ink-soft); }
button:focus-visible, a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}

/* ---------- device chrome (shared top bar) ---------- */

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.1rem 1.6rem;
  border-bottom: 1px solid var(--rule);
}

.wordmark {
  font-family: var(--font-read);
  font-weight: 600;
  font-size: 1.15rem;
  letter-spacing: 0.01em;
}

.chrome-actions {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.chrome-btn {
  padding: 0.4rem 0.7rem;
  font-size: 0.85rem;
  display: inline-block;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  color: var(--ink);
  font-family: var(--font-ui);
  background: none;
  cursor: pointer;
}
.chrome-btn:hover { border-color: var(--ink-soft); }

/* ---------- genre marker ---------- */

.genre-dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  margin-right: 0.5em;
  position: relative;
  top: -1px;
}

.genre-label {
  font-family: var(--font-ui);
  font-size: 0.8rem;
  letter-spacing: 0.02em;
  color: var(--ink-soft);
}

/* ---------- shelves & spines (homepage) ---------- */

main { max-width: 74rem; margin: 0 auto; padding: 0 1.6rem 4rem; }

.shelf {
  margin-top: 2.6rem;
}

.shelf-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 0.9rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--rule);
}

.shelf-title {
  font-family: var(--font-read);
  font-size: 1.3rem;
  font-weight: 500;
}

.shelf-viewall {
  font-family: var(--font-ui);
  font-size: 0.82rem;
  color: var(--ink-soft);
}
.shelf-viewall:hover { color: var(--ink); }

.shelf-row {
  display: flex;
  gap: 1.1rem;
  overflow-x: auto;
  padding-bottom: 0.4rem;
  scroll-snap-type: x proximity;
}
.shelf-row::-webkit-scrollbar { height: 6px; }
.shelf-row::-webkit-scrollbar-thumb { background: var(--rule); border-radius: 3px; }

.spine {
  flex: 0 0 auto;
  width: 9.5rem;
  scroll-snap-align: start;
  display: block;
}

.spine-face {
  width: 9.5rem;
  height: 13.5rem;
  background: var(--paper-raised);
  border: 1px solid var(--rule);
  display: flex;
  align-items: flex-start;
  padding: 0;
  position: relative;
  overflow: hidden;
}

.spine-face img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.spine-title-wrap {
  position: relative;
  width: 100%;
  padding: 0.7rem 0.75rem 1.3rem;
}

.spine-face:not(.no-image) .spine-title-wrap {
  background: linear-gradient(
    180deg,
    rgba(20, 17, 12, 0.78) 0%,
    rgba(20, 17, 12, 0.4) 60%,
    rgba(20, 17, 12, 0) 100%
  );
}

.spine-face .spine-title {
  position: relative;
  font-family: var(--font-read);
  font-size: 0.95rem;
  line-height: 1.25;
  color: var(--ink);
}

.spine-face:not(.no-image) .spine-title { color: #f3eee2; }

.spine-face.no-image {
  background: linear-gradient(180deg, var(--paper-raised), var(--paper-line));
}

.spine-teaser {
  margin-top: 0.5rem;
  font-family: var(--font-read);
  font-style: italic;
  font-size: 0.78rem;
  line-height: 1.35;
  color: var(--ink-soft);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.spine-meta {
  margin-top: 0.5rem;
  display: flex;
  align-items: center;
}

/* ---------- grid (view all) ---------- */

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(9.5rem, 1fr));
  gap: 1.4rem 1.1rem;
  margin-top: 1.5rem;
}

.page-head {
  margin-top: 2.2rem;
  padding-bottom: 0.8rem;
  border-bottom: 1px solid var(--rule);
}
.page-head h1 {
  font-family: var(--font-read);
  font-weight: 500;
  font-size: 1.6rem;
  margin: 0 0 0.3rem;
}
.page-head p { color: var(--ink-soft); margin: 0; font-size: 0.9rem; }

.empty-state {
  margin-top: 3rem;
  padding: 2.5rem 1.5rem;
  text-align: center;
  border: 1px dashed var(--rule);
  color: var(--ink-soft);
}
.empty-state code {
  background: var(--paper-raised);
  padding: 0.15em 0.4em;
  border-radius: var(--radius);
}

/* ---------- reader page ---------- */

.reader-shell {
  height: calc(100vh - 58px);
  display: flex;
  flex-direction: column;
}

.reader-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1.4rem;
  border-bottom: 1px solid var(--rule);
  font-family: var(--font-ui);
  font-size: 0.85rem;
}

.reader-topbar .back { color: var(--ink-soft); }
.reader-topbar .back:hover { color: var(--ink); }

.reader-title {
  font-family: var(--font-read);
  font-weight: 500;
  max-width: 40%;
  text-align: center;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.reader-stage {
  flex: 1;
  display: flex;
  align-items: stretch;
  overflow: hidden;
  position: relative;
}

.page-tap {
  flex: 0 0 8%;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--ink-faint);
  font-size: 1.2rem;
}
.page-tap:hover { color: var(--ink-soft); }
.page-tap:disabled { opacity: 0.25; cursor: default; }

.page-viewport {
  flex: 1;
  overflow: hidden;
  display: flex;
  justify-content: center;
}

.page-column {
  width: 100%;
  max-width: var(--measure);
  padding: 2.6rem 0.5rem 1rem;
  font-family: var(--font-read);
  font-size: var(--reader-size, 1.08rem);
  line-height: 1.7;
  column-width: var(--measure);
  column-gap: 3rem;
  height: 100%;
  overflow: hidden;
}

.page-column p { margin: 0 0 1.1em; text-align: left; }
.page-column p:first-of-type::first-letter {
  font-size: 2.6em;
  line-height: 0.85;
  float: left;
  padding-right: 0.08em;
  padding-top: 0.05em;
  font-weight: 600;
  color: var(--ink);
}

.reader-footer {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.7rem 0;
  border-top: 1px solid var(--rule);
  font-family: var(--font-ui);
  font-size: 0.78rem;
  color: var(--ink-soft);
}

.reader-footer .dots { display: flex; gap: 0.35rem; }
.reader-footer .dot {
  width: 5px; height: 5px; border-radius: 50%;
  background: var(--rule);
}
.reader-footer .dot.current { background: var(--accent); }

.aa-panel {
  position: absolute;
  top: 3.2rem;
  right: 1.4rem;
  background: var(--paper);
  border: 1px solid var(--rule);
  padding: 0.9rem;
  display: none;
  flex-direction: column;
  gap: 0.6rem;
  z-index: 5;
}
.aa-panel.open { display: flex; }
.aa-row { display: flex; align-items: center; justify-content: space-between; gap: 1rem; font-size: 0.82rem; }
.aa-stepper { display: flex; gap: 0.4rem; }
.aa-stepper button { width: 1.7rem; height: 1.7rem; font-size: 0.95rem; }

@media (max-width: 640px) {
  .spine, .spine-face { width: 7.4rem; }
  .spine-face { height: 10.6rem; }
  .reader-title { max-width: 30%; font-size: 0.85rem; }
  .page-column { padding: 1.4rem 0.3rem 0.6rem; }
}

/* ---------- story modal ---------- */

.modal-scrim {
  position: fixed;
  inset: 0;
  background: rgba(24, 21, 16, 0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 1rem;
  z-index: 50;
}
.modal-scrim[hidden] { display: none; }
[data-theme="night"] .modal-scrim { background: rgba(0, 0, 0, 0.7); }

.modal-panel {
  background: var(--paper);
  border: 1px solid var(--rule);
  width: 100%;
  max-width: 38rem;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
}

.modal-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.2rem 1.4rem 1rem;
  border-bottom: 1px solid var(--rule);
}

.modal-title {
  font-family: var(--font-read);
  font-weight: 500;
  font-size: 1.25rem;
  line-height: 1.3;
}

.modal-meta { margin-top: 0.4rem; }

.modal-close-x {
  border: none;
  background: none;
  font-size: 1.5rem;
  line-height: 1;
  color: var(--ink-soft);
  cursor: pointer;
  padding: 0.1rem 0.3rem;
  flex: 0 0 auto;
}
.modal-close-x:hover { color: var(--ink); }

.modal-body {
  padding: 1.5rem 1.6rem;
  overflow-y: auto;
  font-family: var(--font-read);
  font-size: 1.05rem;
  line-height: 1.75;
}
.modal-body p { margin: 0 0 1.1em; }
.modal-body p:first-of-type::first-letter {
  font-size: 2.4em;
  line-height: 0.85;
  float: left;
  padding-right: 0.08em;
  padding-top: 0.05em;
  font-weight: 600;
}

.modal-foot {
  display: flex;
  justify-content: center;
  padding: 0.9rem 1.4rem;
  border-top: 1px solid var(--rule);
}

.modal-close-text {
  background: none;
  border: none;
  color: var(--ink-soft);
  font-family: var(--font-ui);
  font-size: 0.85rem;
  cursor: pointer;
  padding: 0.3rem 0.6rem;
}
.modal-close-text:hover { color: var(--ink); }

@media (max-width: 640px) {
  .modal-panel { max-height: 92vh; }
  .modal-title { font-size: 1.1rem; }
}