/* Public sample images only. Each spread can become a Shopify section block. */
.book-spread {
  --fold-strength: .16;
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 0;
  isolation: isolate;
  perspective: 1600px;
  padding: 0;
  background: #fffdf7;
  box-shadow: 0 3px 0 #e4ddce, 0 5px 0 #faf6ec, 0 7px 0 #d7cebc,
    0 15px 22px -12px #263c3c66, 0 28px 48px -28px #263c3c80;
}
.book-spread::after {
  content: "";
  position: absolute;
  z-index: 2;
  inset: 0 auto 0 46%;
  width: 8%;
  pointer-events: none;
  background: linear-gradient(90deg, transparent, rgb(38 35 28 / .025) 25%,
    rgb(38 35 28 / .07) 43%, rgb(38 35 28 / var(--fold-strength)) 50%,
    rgb(38 35 28 / .07) 57%, rgb(38 35 28 / .025) 75%, transparent);
}
.book-leaf {
  display: block;
  min-width: 0;
  position: relative;
  padding: 0;
  background: #fffdf7;
  backface-visibility: hidden;
  animation: paper-breathe-left 12s ease-in-out infinite;
  animation-play-state: paused;
  transform-origin: right center;
}
.book-leaf-right {
  transform-origin: left center;
  animation-name: paper-breathe-right;
}
.book-spread.is-visible .book-leaf { animation-play-state: running; }
.book-spread img,
.sample-image-button .book-spread img,
.product-sample-spread .book-leaf img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: auto;
  object-fit: contain;
  border-radius: 0;
}
@keyframes paper-breathe-left {
  0%, 100% { transform: rotateY(0deg); }
  40% { transform: rotateY(-1.5deg); }
  75% { transform: rotateY(-.3deg); }
}
@keyframes paper-breathe-right {
  0%, 100% { transform: rotateY(.5deg); }
  35% { transform: rotateY(.1deg); }
  70% { transform: rotateY(1.7deg); }
}
.book-spread:hover .book-leaf,
.book-spread:focus-within .book-leaf,
body.motion-paused .book-spread .book-leaf,
body.pages-paused .book-spread .book-leaf { animation-play-state: paused; }

/* The small homepage preview shows the whole facing spread. */
.sample-card { padding: 18px; transform: rotate(.6deg); }
.sample-image-button {
  background: transparent;
  padding: 12px 3px 22px;
  border-radius: 0;
  overflow: visible;
  box-shadow: none;
}
.product-sample-spread.book-spread { gap: 0; max-width: 800px; }
.product-sample-spread .book-leaf { background: #fffdf7; }

.reader.book-reader {
  width: min(1100px, calc(100% - 28px));
  max-height: 94dvh;
  background: #eee8db;
  border-radius: 18px;
  box-shadow: 0 30px 90px #071f3650;
}
.book-reader .reader-bar {
  padding: 20px 24px 12px;
  background: #eee8db;
  z-index: 5;
}
.book-reader .reader-bar .eyebrow { letter-spacing: .14em; }
.reader-tools {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  padding: 0 24px 12px;
}
.reader-view-switch {
  display: flex;
  gap: 3px;
  padding: 4px;
  border-radius: 30px;
  background: #e1dccf;
}
.reader-view-switch button,
.page-motion,
.reader-pagination button {
  font: inherit;
  font-size: 12px;
  font-weight: 700;
  color: var(--ink);
  background: none;
  min-height: 38px;
  border-radius: 22px;
  padding: 8px 15px;
}
.reader-view-switch button[aria-pressed="true"] {
  background: var(--ink);
  color: #fffef7;
  box-shadow: 0 2px 5px #163e471a;
}
.page-motion { padding-inline: 0; text-decoration: underline; text-underline-offset: 4px; }
.reader-desk { padding: 9px 30px 30px; }
.book-reader .reader-pages {
  width: min(100%, calc((94dvh - 225px) * 1.4142));
  margin: 0 auto;
  padding: 0;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 0;
}
.book-reader .reader-note { margin: 0; padding: 0 20px 20px; font-size: 12px; }
.reader-pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 0 16px 16px;
  font-size: 12px;
}
.reader-pagination[hidden] { display: none; }
.reader-pagination button { background: #fffdf5; }
.reader-pagination button:disabled { opacity: .4; cursor: default; }
.book-reader[data-reading-mode="page"] .reader-pages {
  display: block;
  width: min(100%, 600px);
  perspective: none;
}
.book-reader[data-reading-mode="page"] .book-leaf { animation: none; transform: none; }
.book-reader[data-reading-mode="page"] .book-leaf[hidden] { display: none; }
.book-reader[data-reading-mode="page"] .reader-pages::after { display: none; }
.book-reader[data-reading-mode="page"] .reader-tools { position: sticky; top: 80px; background: #eee8db; z-index: 4; }
.book-reader[data-reading-mode="page"] .page-motion { display: none; }
@media (max-width: 760px) {
  .sample-card { padding: 14px; }
  .book-reader .reader-bar { padding: 16px 16px 12px; }
  .reader-tools { gap: 14px; padding: 0 12px 12px; }
  .reader-view-switch button { padding-inline: 13px; }
  .reader-desk { padding: 10px 14px 26px; }
  .book-reader .reader-pages { width: min(100%, calc((94dvh - 220px) * 1.4142)); }
  .book-reader .reader-note { font-size: 11px; line-height: 1.5; padding-inline: 24px; }
  .book-reader[data-reading-mode="page"] .reader-tools { top: 72px; }
}
@media (prefers-reduced-motion: reduce) {
  .book-spread .book-leaf { animation: none; transform: none; }
  .page-motion { display: none; }
}