/* Books: library, create dialog and paper reader. Tokens come from /studio/assets/lemma-silent-bbaa402-20261108/css/ds.css. */
.nav-item .nav-ico {
  display: inline-grid;
  place-items: center;
  width: 22px;
  height: 22px;
  flex-shrink: 0;
}
.nav-item .nav-ico .ico {
  width: 20px;
  height: 20px;
}

.books-container {
  display: grid;
  gap: var(--s-4);
}
.books-library {
  display: grid;
  gap: var(--s-4);
  min-width: 0;
}
.books-library[hidden],
.books-bar[hidden],
.books-grid[hidden],
.books-shelves[hidden],
.books-processing-shelves[hidden],
.book-reader[hidden],
.books-continue[hidden],
.books-empty[hidden],
.book-word-card[hidden],
.book-curl[hidden],
.curl-flap[hidden] {
  display: none;
}
.books-bar {
  min-width: 0;
}

.books-meter {
  position: relative;
  display: block;
  height: 4px;
  border-radius: var(--r-full);
  background: var(--surface-2);
  overflow: hidden;
}
.books-meter::after {
  content: '';
  position: absolute;
  inset: 0 auto 0 0;
  width: calc(var(--p, 0) * 100%);
  border-radius: inherit;
  background: var(--accent);
}

.books-continue {
  padding: 0;
  width: 100%;
  border-radius: var(--r-lg);
}
.books-continue-open {
  display: flex;
  align-items: center;
  gap: var(--s-3);
  width: 100%;
  padding: var(--s-3);
  border: 0;
  border-radius: inherit;
  background: none;
  color: inherit;
  font: inherit;
  text-align: left;
  cursor: pointer;
  transition: background var(--t-fast);
}
.books-continue-open:hover {
  background: var(--hover);
}
.books-continue-open:focus-visible {
  outline: none;
  box-shadow: var(--ring);
}
.books-continue-copy {
  display: grid;
  gap: 2px;
  flex: 1;
  min-width: 0;
  line-height: 1.25;
}
.books-continue-copy .books-meter {
  max-width: none;
  margin-top: var(--s-1);
  height: 3px;
}
.books-continue-title {
  font-size: var(--fs-md);
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.books-continue-action {
  pointer-events: none;
  background: transparent;
  box-shadow: none;
  padding: 0 var(--s-2);
  gap: var(--s-2);
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
  font-variant-numeric: tabular-nums;
}

/* Covers */
.book-cover,
.book-card-face,
.books-swatch {
  --cover-bg: var(--cover-light);
  --cover-ink: var(--cover-light-ink);
}
[data-theme='dark'] :is(.book-cover, .book-card-face, .books-swatch) {
  --cover-bg: var(--cover-dark);
  --cover-ink: var(--cover-dark-ink);
}
.book-cover {
  position: relative;
  display: grid;
  place-items: center;
  width: 100%;
  aspect-ratio: 2 / 3;
  overflow: hidden;
  border-radius: var(--r-lg);
  background: var(--cover-bg, #1f6f4a);
  color: var(--cover-ink, #fff);
  isolation: isolate;
}
.book-cover.has-image:not(.is-mini) {
  padding: 44px var(--book-card-inset, var(--s-3)) var(--s-3);
  display: flex;
  flex-direction: column;
  gap: var(--s-2);
}
.book-cover-image {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1;
  margin: 0;
  border-radius: var(--r-sm);
  object-fit: cover;
}
.book-cover.has-image:not(.is-mini) .book-cover-image {
  flex: none;
}
.book-cover.has-image:not(.is-mini) .book-cover-caption {
  position: static;
  width: 100%;
  padding: 0;
  margin-top: auto;
  flex: none;
}

.book-cover-emblem {
  width: 58%;
  height: auto;
  margin-bottom: 22%;
  stroke-width: 1.5;
  opacity: 1;
}
.book-cover-caption {
  position: absolute;
  inset: auto 0 0;
  display: grid;
  gap: var(--s-1) var(--s-2);
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  padding: var(--book-card-inset, var(--s-3));
  text-align: left;
}
.book-cover-title {
  grid-column: 1;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.25;
  min-width: 0;
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.book-platform-author {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  min-width: 0;
}
.book-platform-author img {
  width: 1em;
  height: 1em;
  flex: none;
}
.book-platform-author > span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.book-cover-author {
  grid-column: 1;
  font-size: var(--fs-xs);
  opacity: 0.78;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  line-height: 1.5;
}
.book-cover.is-plain .book-cover-caption {
  position: relative;
}
.book-cover.is-plain .book-cover-caption::before {
  content: '';
  grid-column: 1;
  grid-row: 1;
  height: calc(var(--fs-md) * 1.25);
}
.book-cover.is-plain .book-cover-title {
  position: absolute;
  inset: auto 0 0;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
  white-space: normal;
  overflow-wrap: anywhere;
}
.book-cover.is-plain .book-cover-author {
  grid-row: 2;
}
.book-cover.is-plain .book-cover-caption:has(.book-cover-author) .book-cover-title {
  bottom: calc(var(--fs-xs) * 1.5 + var(--s-1));
}
.book-cover.is-plain .book-cover-caption:not(:has(.book-cover-author)) .book-cover-title {
  right: var(--s-5);
}
.book-cover.is-mini {
  width: 48px;
  flex-shrink: 0;
  border-radius: var(--r-lg);
}
.book-cover.is-mini .book-cover-emblem,
.book-cover.is-mini .book-cover-image {
  width: 56%;
  margin: 0;
  stroke-width: 2;
}

/* Grid */
.books-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: var(--s-4) var(--s-3);
  margin: 0;
  padding: 0;
  list-style: none;
}
.book-card {
  position: relative;
  display: grid;
  align-content: start;
  gap: var(--s-2);
  min-width: 0;
}
.book-processing-face {
  position: relative;
  width: 100%;
  aspect-ratio: 1;
  padding: var(--s-3);
  border: 0;
  border-radius: var(--r-lg);
  background: var(--cover-bg);
  color: var(--cover-ink);
  font: inherit;
  text-align: center;
}
.book-processing-face:hover {
  transform: none;
}
button.book-processing-face {
  cursor: pointer;
}
.book-processing-face:focus-visible {
  outline: none;
  box-shadow: var(--ring);
}
.book-processing-title,
.book-processing-author {
  position: absolute;
  left: var(--s-3);
  right: var(--s-3);
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
  line-height: 1.4;
  opacity: 0.75;
}
.book-processing-title {
  top: var(--s-3);
  font-size: var(--fs-sm);
  font-weight: 500;
}
.book-processing-author {
  bottom: var(--s-3);
  font-size: var(--fs-xs);
}
.book-processing-ring {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 56%;
  aspect-ratio: 1;
  transform: translate(-50%, -50%);
}
.book-processing-ring > svg {
  display: block;
  width: 100%;
  height: 100%;
  overflow: visible;
  fill: none;
  stroke: currentColor;
  stroke-width: 3;
  transform: rotate(-90deg);
}
.book-processing-track {
  opacity: 0.15;
}
.book-processing-value {
  stroke-dasharray: 100;
  stroke-dashoffset: calc(100 - var(--progress));
  stroke-linecap: round;
}
.book-processing-art {
  position: absolute;
  inset: 12%;
  display: grid;
  place-items: center;
  border-radius: var(--r-full);
  overflow: hidden;
}
.book-processing-art > .ico {
  width: 50%;
  height: 50%;
  opacity: 0.65;
}
.book-processing-face .book-processing-art .book-cover.is-mini {
  display: grid;
  grid-template: 1fr / 1fr;
  place-items: center;
  padding: 0;
  gap: 0;
  width: 100%;
  height: 100%;
  aspect-ratio: 1;
  border-radius: inherit;
}
.book-processing-art .book-cover.is-mini::after {
  content: none;
}
.book-processing-art .book-cover .book-cover-emblem,
.book-processing-art .book-cover .book-cover-image {
  grid-area: 1 / 1;
}
.book-processing-art .book-cover .book-cover-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.book-processing-status {
  font-size: var(--fs-xs);
  text-align: center;
}
.book-card-face {
  --book-card-inset: calc(var(--s-2) + var(--s-1));
  position: relative;
  transition: transform var(--t) var(--ease);
}
.book-card-face .book-cover,
.book-card-face .book-cover.has-image {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  grid-template-rows: 44px auto var(--s-2) auto calc(var(--book-card-inset) + var(--s-3));
  gap: 0;
  padding: 0 var(--book-card-inset);
  aspect-ratio: auto;
}
.book-card-face .book-cover::after {
  content: '';
  grid-column: 1;
  grid-row: 2;
  width: 100%;
  aspect-ratio: 1;
  pointer-events: none;
}
.book-card-face .book-cover-image,
.book-card-face .book-cover-emblem {
  grid-column: 1;
  grid-row: 2;
  margin: 0;
}
.book-card-face .book-cover .book-cover-caption {
  position: relative;
  grid-column: 1;
  grid-row: 4;
  width: 100%;
  margin: 0;
  padding: 0;
}
/* Soft cover highlight uses the site's existing motion and white glass tint. */
.book-card-face .book-cover::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(
    125deg,
    rgb(255 255 255 / 0.16),
    transparent 48%,
    rgb(255 255 255 / 0.04)
  );
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--t) var(--ease);
}
@media (hover: hover) and (pointer: fine) {
  .book-card-face:hover {
    transform: translateY(-3px);
  }
  .book-card-face:hover .book-cover::before {
    opacity: 1;
  }
}
@media (prefers-reduced-motion: reduce) {
  .book-card-face .book-cover::before {
    transition: none;
  }
}
.book-card-open {
  display: block;
  width: 100%;
  padding: 0;
  border: 0;
  border-radius: var(--r-lg);
  background: none;
  cursor: pointer;
}
.book-card-open:focus-visible {
  outline: none;
  box-shadow: var(--ring);
}
.book-card-favorite {
  --icon-control-size: 44px;
  position: absolute;
  top: 0;
  left: 0;
  color: var(--cover-ink, #fff);
  background: transparent;
  box-shadow: none;
  border: 0;
}
.book-card-face .book-card-favorite,
.book-card-face .book-card-favorite:hover,
.book-card-face .book-card-favorite:active,
.book-card-face .book-card-favorite[aria-pressed='true'] {
  background: transparent;
  color: var(--cover-ink, #fff);
  box-shadow: none;
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
}
.book-card-progress {
  position: absolute;
  inset: auto var(--book-card-inset, var(--s-3)) var(--book-card-inset, var(--s-3));
  display: flex;
  pointer-events: none;
}
.book-card-progress[hidden] {
  display: none;
}
.book-card-progress .books-meter {
  flex: 1;
  background: color-mix(in srgb, var(--cover-ink, #fff) 20%, transparent);
}
.book-card-progress .books-meter::after {
  background: var(--cover-ink, #fff);
}
.books-empty {
  border-radius: var(--r-xl);
  background: var(--surface);
  box-shadow: var(--glass-edge);
}
.books-empty .btn {
  margin-top: var(--s-2);
}

/* Create book: identity, text, options, then optional cover tools. */
.books-dialog {
  width: min(760px, calc(100vw - 32px));
}
.books-dialog:has(.books-form) {
  overflow: hidden;
}
.books-form {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  max-height: inherit;
  min-height: 0;
}
.books-form-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--s-5);
  padding: var(--s-2) var(--s-5) var(--s-5);
  scrollbar-width: none;
  min-height: 0;
  overscroll-behavior: contain;
}
.books-form-body::-webkit-scrollbar {
  display: none;
}
.books-form [hidden] {
  display: none;
}
.books-cover-editor {
  display: grid;
  grid-template-columns: 144px minmax(0, 1fr);
  gap: var(--s-5);
  align-items: center;
  min-width: 0;
}
.books-cover-preview {
  width: 144px;
}
.books-cover-preview > .icon-btn {
  pointer-events: none;
}
.books-cover-preview .book-cover-category .ico {
  width: 12px;
  height: 12px;
}
.books-create-info,
.books-create-meta {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--s-2);
  min-width: 0;
}
.books-create-meta .acc-field,
.books-create-options .acc-field,
.books-create-access {
  display: grid;
  gap: var(--s-2);
  min-width: 0;
  font-size: var(--fs-sm);
  color: var(--text-2);
}
.books-create-author {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-2);
  margin: 0;
  color: var(--text-2);
  font-size: var(--fs-xs);
}
.books-author {
  color: var(--text);
  overflow-wrap: anywhere;
}
.books-create-text {
  display: grid;
  gap: var(--s-2);
}
.books-create-text-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-3);
  min-height: 32px;
  font-size: var(--fs-sm);
  color: var(--text-2);
}
.books-text-upload.btn {
  --h: 32px;
  padding: 0 var(--s-2);
  background: transparent;
  font-size: var(--fs-xs);
}
.books-text.field {
  min-height: 180px;
  max-height: 36dvh;
  padding: var(--s-3);
  border-radius: var(--r-lg);
  font-size: var(--fs-md);
  line-height: 1.55;
}
.books-create-options {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: var(--s-3);
  align-items: start;
}
.books-create-access {
  grid-column: 1 / -1;
}
.books-create-options .segmented {
  min-height: 44px;
}
.books-create-options > .subtle {
  grid-column: 1 / -1;
  margin: 0;
  font-size: var(--fs-xs);
}
.books-cover-customize {
  min-width: 0;
}
.books-cover-customize > h3 {
  margin: 0 0 var(--s-2);
  color: var(--text);
  font-size: var(--fs-sm);
  font-weight: 500;
}
.books-category-field {
  display: grid;
  gap: var(--s-2);
  min-width: 0;
}
.books-category-options {
  --picker-inset: var(--s-2);
}
.books-category-options .books-category-link {
  min-height: 44px;
  padding-inline: var(--s-3);
  border: 0;
  border-radius: var(--r-full);
  font: inherit;
  font-size: var(--fs-sm);
  cursor: pointer;
  background: var(--surface-2);
  box-shadow: none;
}
.books-field-error {
  margin: 0;
  font-size: var(--fs-xs);
  line-height: 1.4;
  color: var(--danger);
}
.books-form [aria-invalid='true'] {
  outline: 1px solid var(--danger);
  outline-offset: 2px;
}
.books-language-status {
  margin: 0;
  font-size: var(--fs-xs);
}
.books-language-status:empty {
  display: none;
}
.books-cover-customize > summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-2);
  min-height: 44px;
  cursor: pointer;
  list-style: none;
  font-size: var(--fs-sm);
  color: var(--text-2);
}
.books-cover-customize > summary::-webkit-details-marker {
  display: none;
}
.books-cover-customize > summary .ico {
  transition: transform var(--t-fast) var(--ease);
}
.books-cover-customize[open] > summary .ico {
  transform: rotate(180deg);
}
.books-cover-controls {
  --picker-inset: var(--s-2);
  display: grid;
  gap: var(--s-2);
  min-width: 0;
  padding-top: var(--s-2);
}
.books-field-label {
  font-size: var(--fs-xs);
  color: var(--text-2);
}
.books-cover-controls .books-field-label:not(:first-child) {
  margin-top: var(--s-3);
}
.books-swatches,
.books-emblems,
.books-category-options {
  display: grid;
  grid-auto-flow: column;
  --edge-fade: var(--picker-inset);
  grid-auto-columns: 44px;
  gap: var(--s-2);
  width: calc(100% + 2 * var(--picker-inset));
  margin-inline: calc(-1 * var(--picker-inset));
  min-width: 0;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scroll-snap-type: x proximity;
  scroll-padding-inline: calc(var(--picker-inset) + 4px);
  scrollbar-width: none;
  padding: 4px calc(var(--picker-inset) + 4px);
  box-sizing: border-box;
}
.books-swatches::-webkit-scrollbar,
.books-emblems::-webkit-scrollbar,
.books-category-options::-webkit-scrollbar {
  display: none;
}
.books-category-options {
  grid-auto-columns: max-content;
}
.books-swatch,
.books-emblem-option {
  scroll-snap-align: start;
}
.books-swatch,
.books-emblem-option {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: var(--r-full);
  padding: 0;
  border: 0;
  cursor: pointer;
  transition:
    box-shadow var(--t-fast),
    background var(--t-fast);
}
.books-swatch {
  border-radius: var(--r-full);
  background: var(--cover-bg);
  box-shadow: inset 0 0 0 1px rgb(255 255 255 / 0.12);
}
.books-swatch[aria-checked='true'],
.books-emblem-option[aria-checked='true'],
.books-category-options [aria-checked='true'],
.books-image-row .btn[aria-pressed='true'] {
  box-shadow:
    0 0 0 2px var(--bg-elev),
    0 0 0 4px var(--accent);
}
.books-emblem-option {
  background: var(--surface-2);
  color: var(--text);
}
.books-emblem-option:hover {
  background: var(--surface-hover);
}
.books-emblem-option .ico {
  width: 32px;
  height: 32px;
}
.books-swatch:focus-visible,
.books-emblem-option:focus-visible {
  outline: none;
  box-shadow: var(--ring);
}
.books-image-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-2);
  margin-top: var(--s-2);
  justify-content: center;
}
.books-image-row > .btn {
  min-height: 44px;
  justify-content: center;
}
.books-form-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: var(--s-2);
  padding: var(--s-3) var(--s-5) var(--s-5);
  border-top: 1px solid var(--border);
}
.books-submit-price {
  display: inline-flex;
  align-items: center;
  gap: var(--s-1);
  font-variant-numeric: tabular-nums;
}
.books-submit-price .ico {
  width: 16px;
  height: 16px;
}
.books-submit-hint {
  flex-basis: 100%;
  margin: 0;
  color: var(--muted);
  font-size: var(--fs-sm);
}
.books-submit-hint[hidden] {
  display: none;
}
.books-error {
  flex-basis: 100%;
  margin: 0;
  color: var(--danger);
  font-size: var(--fs-sm);
}
.books-error[hidden] {
  display: none;
}
@media (max-width: 640px) {
  .books-dialog {
    width: calc(100vw - 24px);
  }
  .books-form-body {
    gap: var(--s-3);
    padding-inline: var(--s-3);
  }
  .books-dialog .dialog-head {
    padding: var(--s-3) var(--s-2) var(--s-2) var(--s-3);
  }
  .books-dialog .dialog-head .icon-btn {
    --icon-control-size: 44px;
  }
  .books-form-actions {
    padding: var(--s-3);
  }
  .books-cover-editor {
    grid-template-columns: 128px minmax(0, 1fr);
    gap: var(--s-3);
    align-items: start;
  }
  .books-cover-preview {
    width: 128px;
  }
  .books-text.field {
    min-height: 156px;
  }
}
@media (max-width: 360px) {
  .books-create-options {
    grid-template-columns: minmax(0, 1fr);
  }
}
@media (prefers-reduced-motion: reduce) {
  .books-cover-customize > summary .ico {
    transition: none;
  }
}

/* Saved words */
.books-word-list {
  display: grid;
  gap: 4px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.books-word-item {
  display: flex;
  align-items: center;
  gap: var(--s-3);
  padding: 10px 8px 10px 16px;
  border-radius: var(--r-lg);
  background: var(--surface-2);
}
.books-word-item > div {
  display: grid;
  gap: 2px;
  flex: 1;
  min-width: 0;
}
.books-word-item .subtle {
  font-size: var(--fs-xs);
}

/* Reader */
.book-reader {
  --page-bg: #fffdf8;
  --page-ink: #1d2420;
  --page-muted: rgb(29 36 32 / 0.5);
  --page-tr: #2b7a55;
  --page-edge: rgb(29 36 32 / 0.1);
  --page-shade: 0.1;
  position: relative;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  gap: var(--s-2);
  height: calc(100dvh - 32px);
  min-width: 0;
}
.book-reader[data-paper='sepia'] {
  --page-bg: #f4ead5;
  --page-ink: #3c301f;
  --page-muted: rgb(60 48 31 / 0.52);
  --page-tr: #8c5a28;
  --page-edge: rgb(60 48 31 / 0.14);
}
.book-reader[data-paper='black'] {
  --page-bg: #161a18;
  --page-ink: #e6e2d8;
  --page-muted: rgb(230 226 216 / 0.46);
  --page-tr: #7fcca2;
  --page-edge: rgb(255 255 255 / 0.06);
  --page-shade: 0.22;
}
.book-reader-bar {
  display: flex;
  align-items: center;
  gap: var(--s-2);
  min-width: 0;
}
.book-reader-titles {
  display: grid;
  min-width: 0;
  flex: 1;
}
.book-reader-titles > * {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.book-reader-titles strong {
  font-size: var(--fs-md);
  font-weight: 600;
}
.book-reader-titles .subtle {
  font-size: var(--fs-xs);
}
.book-reader-tools {
  display: flex;
  align-items: center;
  gap: 2px;
}
.book-play[aria-pressed='true'] {
  background: var(--accent-soft);
  color: var(--text);
}
.book-stage {
  position: relative;
  min-height: 0;
  touch-action: pan-y;
  user-select: none;
  -webkit-user-select: none;
}
.book-spread,
.book-curl {
  position: absolute;
  top: 0;
  left: 50%;
  display: flex;
  transform: translateX(-50%);
}
.book-curl {
  z-index: 3;
  pointer-events: none;
}
.book-reader.is-double .book-spread::after {
  content: '';
  position: absolute;
  inset: 0 auto 0 50%;
  width: 1px;
  background: var(--page-edge);
  pointer-events: none;
}
.book-page {
  --book-page-padding: var(--s-5);
  --book-text-inset: calc(var(--s-3) + var(--s-5));
  position: relative;
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  box-sizing: border-box;
  padding: var(--book-page-padding) 0;
  overflow: hidden;
  border-radius: var(--r-lg);
  background: var(--page-bg);
  color: var(--page-ink);
  box-shadow: var(--glass-edge);
}
.book-page.is-left {
  border-radius: var(--r-lg) var(--r-sm) var(--r-sm) var(--r-lg);
  background-image: linear-gradient(to left, rgb(0 0 0 / var(--page-shade)), transparent 7%);
}
.book-page.is-right {
  border-radius: var(--r-sm) var(--r-lg) var(--r-lg) var(--r-sm);
  background-image: linear-gradient(to right, rgb(0 0 0 / var(--page-shade)), transparent 7%);
}
.book-page.is-back {
  background-image: linear-gradient(to left, rgb(0 0 0 / 0.04), transparent 30%);
}
.book-measure {
  position: absolute;
  top: 0;
  left: 0;
  visibility: hidden;
  pointer-events: none;
  contain: layout paint;
}
.book-page-body {
  position: relative;
  flex: 1;
  min-height: 0;
  overflow: hidden;
}
.book-page-body.is-oversized {
  overflow-y: auto;
  overscroll-behavior: contain;
}
.book-line {
  position: relative;
  margin: 0;
  min-height: 44px;
  padding: 0 var(--book-text-inset) var(--s-2);
  font-size: 18px;
  line-height: 1.55;
  overflow-wrap: anywhere;
  outline: none;
}
.book-line.is-paragraph {
  padding-top: var(--s-1);
}
.book-line-text {
  border-radius: 4px;
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
  transition: background var(--t-fast);
}
.book-word {
  border-radius: 4px;
  cursor: pointer;
  transition: background var(--t-fast);
}
.book-word:hover {
  background: color-mix(in srgb, var(--page-tr) 12%, transparent);
}
.book-word.is-word-active {
  background: color-mix(in srgb, var(--page-tr) 24%, transparent);
}
.book-line.is-speaking .book-line-text {
  background: color-mix(in srgb, var(--page-tr) 16%, transparent);
}
.book-line-tr {
  display: block;
  margin-top: 2px;
  color: var(--page-tr);
  font-size: 14.5px;
  line-height: 1.45;
  transition: opacity var(--t-fast);
}
.book-line-tr[data-state='hidden'] {
  visibility: hidden;
}
.book-line-tr[data-state='loading'] {
  color: transparent;
  border-radius: 4px;
  background: color-mix(in srgb, var(--page-tr) 10%, transparent);
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
  display: inline;
}
.book-line-tr[data-state='error'] {
  color: var(--danger);
}
.book-reader[data-interlinear='tap'] .book-line {
  cursor: pointer;
}
.book-align {
  border-radius: 3px;
  background: color-mix(in srgb, var(--page-tr) 22%, transparent);
  color: inherit;
}
.book-line-translate {
  --icon-control-size: 32px;
  position: absolute;
  top: 0;
  right: calc((var(--book-text-inset) - var(--icon-control-size)) / 2);
  color: var(--page-muted);
}
.book-line-translate:hover {
  background: color-mix(in srgb, var(--page-ink) 8%, transparent);
  color: var(--page-ink);
}
.book-line-card-text {
  margin: 0;
  overflow-wrap: anywhere;
}
.book-line-play {
  --icon-control-size: 44px;
  position: absolute;
  top: -8px;
  left: calc((var(--book-text-inset) - var(--icon-control-size)) / 2);
  color: var(--page-muted);
  opacity: 0.7;
  transition: opacity var(--t-fast);
}
.book-line-play .ico {
  width: 15px;
  height: 15px;
}
.book-line-play:hover,
.book-line-play:focus-visible,
.book-line.is-speaking .book-line-play {
  opacity: 1;
}
.book-line-play,
.book-line-play:hover,
.book-line-play:active {
  background: transparent;
  box-shadow: none;
}
.book-line-play:hover {
  color: var(--page-ink);
}
.book-line-play:focus-visible {
  outline: 1px solid var(--page-muted);
  outline-offset: -8px;
}

.book-reader-foot {
  display: flex;
  align-items: center;
  gap: var(--s-2);
  min-width: 0;
}
.book-reader-foot .books-meter {
  flex: 1;
}
.book-page-label {
  min-width: 88px;
  text-align: center;
  font-size: var(--fs-xs);
  font-variant-numeric: tabular-nums;
}

/* Curl layers are positioned by book-curl.js in sheet coordinates. */
.curl-page,
.curl-flap {
  position: absolute;
  top: 0;
}
.curl-page {
  overflow: hidden;
  border-radius: var(--r-lg);
}
.curl-page > .book-page {
  box-shadow: none;
}
.curl-flap {
  filter: none;
}
.curl-back {
  position: absolute;
  top: 0;
  left: 0;
  overflow: hidden;
  transform-origin: 0 0;
}
.curl-back > .book-page {
  border-radius: var(--r-lg);
}
.curl-strip {
  position: absolute;
  top: 0;
  left: 0;
  transform-origin: 0 0;
  pointer-events: none;
}
.curl-under-shadow {
  background: linear-gradient(to bottom, rgb(0 0 0 / 0.08), transparent);
}
.curl-front-shade {
  background: linear-gradient(to bottom, rgb(0 0 0 / 0.1), rgb(0 0 0 / 0));
}
.curl-back-shade {
  background: linear-gradient(
    to bottom,
    rgb(0 0 0 / 0.08),
    rgb(255 255 255 / 0.06) 25%,
    transparent 65%
  );
}
.book-reader[data-paper='black'] .curl-back-shade {
  background: linear-gradient(
    to bottom,
    rgb(0 0 0 / 0.4) 0,
    rgb(255 255 255 / 0.1) 16%,
    rgb(255 255 255 / 0) 50%,
    rgb(0 0 0 / 0.2) 100%
  );
}

/* Word card */
.book-word-card {
  position: absolute;
  z-index: 6;
  display: grid;
  gap: var(--s-3);
  width: min(300px, calc(100vw - 2 * var(--s-3)));
  max-height: min(50dvh, 400px);
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: var(--s-3);
  background: var(--glass-strong);
  -webkit-backdrop-filter: var(--blur);
  backdrop-filter: var(--blur);
  box-shadow: var(--glass-edge), var(--shadow-3);
  border-radius: var(--r-lg);
  animation: rise var(--t) var(--ease) both;
}
.book-word-card.is-sheet {
  position: fixed;
  left: 12px;
  right: 12px;
  bottom: max(12px, env(safe-area-inset-bottom));
  width: auto;
}
.book-word-card.is-sheet-top {
  bottom: auto;
}
.book-word-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin: -4px -8px -4px 0;
}
.book-word-tools {
  display: flex;
  gap: 2px;
}
.book-word-title {
  font-size: var(--fs-lg);
  font-weight: 600;
  min-width: 0;
  overflow-wrap: anywhere;
}
.book-word-section {
  display: grid;
  gap: 4px;
}
.book-word-section p {
  margin: 0;
}
.book-word-answer {
  font-size: var(--fs-md);
  font-weight: 500;
}
.book-word-loading {
  display: inline-block;
  width: 6.5em;
  height: 0.85em;
  border-radius: 4px;
  vertical-align: baseline;
}
.book-word-context {
  font-size: var(--fs-xs);
}

/* Settings popover */
.book-settings {
  width: min(400px, calc(100vw - 2 * var(--s-3)));
  padding: var(--s-3);
  display: grid;
  gap: var(--s-3);
  overscroll-behavior: contain;
}
.book-settings:not(:popover-open) {
  display: none;
}
.book-setting {
  display: grid;
  gap: var(--s-2);
  min-width: 0;
}
.book-setting .segmented {
  display: flex;
}
.book-setting .segmented button {
  padding: var(--s-2) clamp(4px, 1vw, 8px);
  line-height: 1.2;
  min-height: 44px;
}
.book-delete {
  justify-self: start;
}
@media (max-width: 640px) {
  .books-grid {
    grid-template-columns: repeat(auto-fill, minmax(136px, 1fr));
    gap: var(--s-4) var(--s-3);
  }
  .books-create > span:not(.anim-ico) {
    display: none;
  }
  .books-create {
    width: 44px;
    height: 44px;
    min-width: 44px;
    flex: 0 0 44px;
    padding: 0;
  }
  .books-search {
    min-width: 0;
    flex-basis: 0;
  }
  .books-words span:not(.subtle) {
    display: none;
  }
  .book-page {
    --book-text-inset: calc(12px + var(--s-5));
  }
  .book-reader-foot .icon-btn,
  .book-word-card .icon-btn {
    --icon-control-size: 44px;
  }
  .book-line-translate {
    --icon-control-size: 44px;
    top: -8px;
  }
  .book-line {
    font-size: 17px;
  }
}

html[data-resources='economy'] .curl-flap {
  filter: none;
}
@media (prefers-reduced-motion: reduce) {
  .book-card-face:hover {
    transform: none;
  }
}

.books-job {
  align-self: start;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--s-3);
}
.books-job h2,
.books-job p {
  width: 100%;
  margin: 0;
}
.books-quote {
  margin: 0;
  font-weight: 600;
}

/* The reader owns its toolbar; the library keeps the regular Studio header. */
.main:has(#booksScreen:not([hidden]) .book-reader:not([hidden]))::before {
  display: none;
}
.main:has(#booksScreen:not([hidden]) .book-reader:not([hidden])) .book-reader {
  height: calc(100dvh - var(--header-reserve) - 16px - env(safe-area-inset-bottom, 0px));
}
.main:has(#booksScreen:not([hidden]) .book-reader:not([hidden])) .container {
  max-width: none;
  padding: 0 var(--s-4) var(--s-2);
}
@media (max-width: 859px) {
  .main:has(#booksScreen:not([hidden]) .book-reader:not([hidden])) .book-reader {
    height: calc(100dvh - var(--header-reserve) - var(--s-2) - env(safe-area-inset-bottom, 0px));
  }
}
@media (max-width: 640px) {
  .main:has(#booksScreen:not([hidden]) .book-reader:not([hidden])) {
    --header-overlap: calc(var(--s-3) + var(--s-1));
  }
  .main:has(#booksScreen:not([hidden]) .book-reader:not([hidden])) .container {
    padding: 0 var(--s-2) var(--s-2);
  }
  .book-reader {
    height: calc(100dvh - 16px - env(safe-area-inset-bottom, 0px));
    gap: var(--s-1);
  }
  .book-reader-bar {
    gap: var(--s-1);
  }
}

.book-editor-fields {
  display: grid;
  gap: var(--s-4);
  min-width: 0;
  margin: 0;
  padding: 0;
  border: 0;
}
.book-editor-fields label {
  display: grid;
  gap: var(--s-2);
  min-width: 0;
  font-size: var(--fs-sm);
  color: var(--text-2);
}
.book-editor-units {
  display: grid;
  gap: var(--s-4);
}
.book-editor-unit {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--s-3);
  padding-top: var(--s-4);
  border-top: 1px solid var(--border);
}
.book-editor-unit textarea.field {
  border-radius: var(--r-md);
  padding: var(--s-3);
  min-height: 96px;
  line-height: 1.5;
  color: var(--text);
  resize: vertical;
}
@media (max-width: 640px) {
  .book-editor-unit {
    grid-template-columns: minmax(0, 1fr);
  }
}

.books-server-status {
  margin: 0;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--s-2);
}
.books-server-status:empty {
  display: none;
}

.books-library > .books-continue {
  margin: 0;
}

.book-emblem {
  opacity: 1;
}

.book-card-more,
.book-card-edit {
  --icon-control-size: 44px;
  position: absolute;
  top: 0;
  right: 0;
}
.book-card-edit {
  left: 32px;
  right: auto;
}
.book-card-face .book-card-more,
.book-card-face .book-card-more:hover,
.book-card-face .book-card-more[aria-expanded='true'],
.book-card-face .book-card-edit,
.book-card-face .book-card-edit:hover,
.book-card-face .book-card-edit:active {
  color: var(--cover-ink, #fff);
  background: transparent;
  box-shadow: none;
}
.book-card-menu.studio-menu > button {
  font-size: 14px;
  font-weight: 400;
  justify-content: center;
  text-align: center;
}
.book-card-menu.studio-menu [data-delete] {
  color: var(--danger);
}

.books-continue .book-cover.is-mini {
  width: 64px;
  aspect-ratio: 1;
  border-radius: var(--r-md);
  align-self: center;
}
.books-continue .book-cover.is-mini .book-cover-image {
  width: 100%;
  height: 100%;
  border-radius: inherit;
  object-fit: cover;
}

.books-continue-copy .eyebrow {
  font-size: var(--fs-xs);
}

/* Reading uses the existing shell header and its original menu control. */
#studioHeader:has(.book-reader-bar) > .page-title {
  display: none;
}
#studioHeader > .book-reader-bar {
  flex: 1;
  min-width: 0;
  pointer-events: auto;
}
#studioHeader:has(.book-editor-toolbar) > .page-title {
  display: none;
}
.book-editor-toolbar {
  display: flex;
  align-items: center;
  gap: var(--s-2);
  flex: 1;
  min-width: 0;
}
.main:has(.book-editor-host:not([hidden])) .container {
  max-width: none;
  padding-inline: var(--s-3);
}
.book-editor-toolbar .icon-btn {
  --icon-control-size: 44px;
}
.book-editor-toolbar .book-reader-titles {
  flex: 1;
}
.book-editor-publish {
  flex: none;
  gap: var(--s-2);
}
.book-publish-short {
  display: none;
}
@media (max-width: 640px) {
  .main:has(.book-editor-host:not([hidden])) .container {
    padding-inline: var(--s-2);
  }
  .book-editor-publish {
    padding-inline: var(--s-3);
  }
  .book-publish-full {
    display: none;
  }
  .book-publish-short {
    display: inline;
  }
}
.book-reader.has-shell-toolbar {
  grid-template-rows: minmax(0, 1fr) auto;
}
@media (max-width: 400px) {
  .main:has(#booksScreen:not([hidden]) .book-reader:not([hidden])) {
    --topbar-h: 104px;
    --header-overlap: var(--s-3);
  }
  #studioHeader:has(.book-reader-bar) {
    align-items: flex-start;
    padding-top: var(--s-2);
  }
  .book-reader-bar {
    display: grid;
    grid-template-columns: 44px minmax(0, 1fr);
  }
  .book-reader-titles {
    align-self: center;
  }
  .book-reader-tools {
    grid-column: 1 / -1;
    justify-content: flex-end;
  }
}
@media (max-width: 640px) {
  #studioHeader:has(.book-reader-bar) > .topbar-actions {
    display: none;
  }
  #studioHeader .book-reader-titles strong {
    font-size: var(--fs-sm);
  }
}

.book-cover-caption:has(.book-cover-author) .book-cover-title {
  grid-column: 1 / -1;
}
.book-cover-caption:has(.book-cover-author) .book-cover-category {
  grid-row: 2;
}
.book-cover-category {
  grid-row: 1;
  grid-column: 2;
  align-self: center;
  color: inherit;
  display: inline-flex;
  gap: var(--s-1);
}
.book-visibility {
  display: inline-flex;
  align-items: center;
}
.book-cover-category .ico {
  width: 16px;
  height: 16px;
}

.books-shelves {
  display: grid;
  gap: var(--s-4);
  padding: 0;
  margin: 0;
  list-style: none;
  min-width: 0;
}
.books-shelf {
  min-width: 0;
}
.books-shelf-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-3);
  margin-bottom: var(--s-2);
}
.books-shelf-head h2 {
  margin: 0;
  font-size: var(--fs-md);
}
.books-shelf-head a {
  color: var(--text-2);
  white-space: nowrap;
}
.books-shelf-rail {
  --rail-inset: var(--s-5);
  --edge-fade: var(--rail-inset);
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: clamp(160px, 22cqi, 208px);
  gap: var(--s-2);
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scroll-snap-type: x mandatory;
  scroll-padding-inline: var(--rail-inset, 0px);
  scrollbar-width: none;
  list-style: none;
  width: calc(100% + 2 * var(--rail-inset, 0px));
  padding: 4px var(--rail-inset, 0px);
  margin: -4px calc(-1 * var(--rail-inset, 0px));
}
.books-shelf-rail::-webkit-scrollbar {
  display: none;
}
.books-shelf-rail > li {
  scroll-snap-align: start;
}
.books-category {
  display: grid;
  min-width: 0;
}
.books-categories .books-shelf-rail {
  grid-auto-columns: max-content;
}
.books-category-link {
  display: flex;
  align-items: center;
  gap: var(--s-2);
  min-height: 52px;
  padding: 0 var(--s-8);
  background: var(--surface);
  box-shadow: var(--glass-edge);
  border-radius: var(--r-lg);
  color: var(--text);
  font-size: var(--fs-md);
  font-weight: 500;
  line-height: 1.35;
  text-decoration: none;
  white-space: nowrap;
  transition: background var(--t-fast);
}
.books-category-link > .ico {
  width: 20px;
  height: 20px;
  flex: none;
  color: var(--text-2);
}
.books-category-link:hover {
  background: var(--surface-2);
}
.books-category-link:focus-visible {
  outline: none;
  box-shadow: var(--ring);
}

/* Shared spacing for library sections and the book creation form. */
.books-section-head {
  display: flex;
  align-items: center;
  gap: var(--s-2);
}
.books-section-head[hidden] {
  display: none;
}
.books-section-head h2 {
  margin: 0;
  font-size: var(--fs-lg);
  font-weight: 600;
}
@media (max-width: 640px) {
  .book-reader-bar .icon-btn {
    --icon-control-size: 44px;
  }
  .book-reader-tools {
    gap: 0;
  }
}

.book-card-meta:empty {
  display: none;
}

.books-access {
  display: flex;
  width: 100%;
}
.books-access > button {
  flex: 1;
  min-width: 0;
  justify-content: center;
}
.book-setting .segmented {
  width: 100%;
  min-width: 0;
}
.book-card-favorite > .ico,
.book-card-more > .ico,
.book-card-edit > .ico {
  width: 20px;
  height: 20px;
}
.books-continue-copy > .subtle {
  font-size: var(--fs-xs);
  line-height: 16px;
}
.books-continue-copy > .eyebrow {
  font-size: 11px;
  line-height: 12px;
}
.books-continue-title {
  line-height: 20px;
}
.books-dialog .dialog-head {
  padding-right: 12px;
}
.books-job-meter {
  flex-basis: 100%;
}

#studioHeader:has(.books-section-head:not([hidden])) > .page-title {
  display: none;
}
#studioHeader > .books-section-head {
  flex: 1;
  min-width: 0;
  pointer-events: auto;
}
#studioHeader > .books-section-head h2 {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.book-line.is-paragraph .book-line-play {
  top: -4px;
}

@media (max-width: 640px) {
  .books-shelf-head .btn,
  .books-section-head .icon-btn {
    --h: 44px;
    --icon-control-size: 44px;
  }
  .books-shelf-rail {
    --rail-inset: var(--gutter);
    --edge-fade: 0px;
    -webkit-mask-image: none;
    mask-image: none;
  }
}

.book-author-dialog {
  max-width: min(90vw, 480px);
  border: 0;
  border-radius: 24px;
  padding: 24px;
  background: var(--surface, #fff);
  color: inherit;
}
.book-author-dialog::backdrop {
  background: #0008;
}
.book-author-dialog > button {
  float: right;
}
.book-author-dialog a {
  display: block;
  padding: 10px 0;
}
.book-author-avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  object-fit: cover;
  display: grid;
  place-items: center;
  background: var(--surface-muted, #eee);
}
button.subtle,
button.book-platform-author {
  cursor: pointer;
}