.book-cover-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
  gap: 28px;
  row-gap: 44px;
}

.book-toolbar {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 32px;
}

.book-filter-group {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.book-sort-group {
  gap: 6px;
  flex-wrap: wrap;
}

.book-sort-group__label {
  margin-right: 4px;
}

.book-toolbar__chip {
  height: 30px;
  text-decoration: none;
}

.book-shelf-title {
  font-size: 14px;
  font-weight: 500;
  line-height: 1.3;
}

.book-cover-container {
  --book-bg: oklch(0.28 0.05 var(--book-hue));
  --book-fg: oklch(0.92 0.04 var(--book-hue));
  --book-accent: oklch(0.65 0.13 var(--book-hue));

  appearance: none;
  border: 0;
  background: var(--book-bg);
  color: var(--book-fg);
  text-align: left;
  cursor: pointer;
  width: 100%;
  aspect-ratio: 2/3;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  border-radius: 4px;
  position: relative;
  overflow: hidden;
  padding: calc(22px * var(--book-size)) calc(20px * var(--book-size));
  font-family: var(--font-display);
  transform: translateY(0);
  box-shadow:
    0 18px 40px -20px rgba(0, 0, 0, 0.6),
    inset 0 0 0 1px rgba(255, 255, 255, 0.04);
  transition:
    transform 220ms ease,
    box-shadow 220ms ease;
  text-decoration: none;
}

.book-cover-container:hover,
.book-cover-container:focus-visible {
  transform: translateY(-6px);
  box-shadow:
    0 30px 50px -20px rgba(0, 0, 0, 0.7),
    inset 0 0 0 1px rgba(255, 255, 255, 0.06);
}

.book-cover-container--static {
  cursor: default;
}

.book-cover-container--static:hover,
.book-cover-container--static:focus-visible {
  transform: none;
  box-shadow:
    0 18px 40px -20px rgba(0, 0, 0, 0.6),
    inset 0 0 0 1px rgba(255, 255, 255, 0.04);
}

.book-cover-container:focus-visible {
  outline: 2px solid var(--book-accent);
  outline-offset: 4px;
}

.book-genre {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--book-accent);
}

.book-cover-label {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--book-accent);
  letter-spacing: 0.2em;
  margin-bottom: 10px
}

.book-cover-title {
  font-size: calc(20px * var(--book-size));
  line-height: 1.1;
  font-weight: 600;
  letter-spacing: -0.01em
}

.book-cover-author {
  margin-top: 12px;
  font-size: 12px;
  opacity: 0.7;
  font-family: var(--font-sans)
}

.book-alignment {
  position: absolute;
  right: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--book-accent);
  opacity: 0.4
}

@media (max-width: 640px) {
  .book-cover-grid {
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 18px;
  }
}

.book-detail__grid {
  display: grid;
  grid-template-columns: minmax(260px, 320px) minmax(0, 1fr);
  gap: 64px;
  align-items: start;
}

.book-detail__sidebar {
  position: sticky;
  top: 96px;
}

.book-detail__sidebar-meta {
  margin-top: 22px;
}

.book-detail__actions {
  display: grid;
  gap: 8px;
  margin-top: 24px;
}

.book-detail__action {
  width: 100%;
  justify-content: center;
}

.book-detail__title {
  font-size: clamp(36px, 4.6vw, 60px);
  letter-spacing: -0.025em;
  line-height: 1.05;
  margin-bottom: 10px;
}

.book-detail__author {
  font-size: 18px;
  margin-bottom: 28px;
}

.book-detail__summary {
  color: var(--text-muted);
  font-size: 17px;
  line-height: 1.65;
  font-style: italic;
  border-left: 2px solid var(--accent);
  padding-left: 18px;
  margin: 0 0 36px;
  font-family: var(--font-display);
}

.book-tabs {
  position: relative;
}

.book-tabs__input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.book-tabs__nav {
  display: flex;
  align-items: center;
  gap: 22px;
  margin-bottom: 28px;
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
}

.book-tabs__label {
  color: var(--text-muted);
  padding: 12px 4px;
  margin-bottom: -1px;
  cursor: pointer;
  font-size: 14.5px;
  border-bottom: 2px solid transparent;
  white-space: nowrap;
  transition:
    color 140ms ease,
    border-color 140ms ease;
}

.book-tabs__label:hover {
  color: var(--text);
}

.book-tabs__panel {
  display: none;
  max-width: 640px;
}

#book-tab-review:checked ~ .book-tabs__nav label[for="book-tab-review"],
#book-tab-takeaways:checked ~ .book-tabs__nav label[for="book-tab-takeaways"],
#book-tab-quotes:checked ~ .book-tabs__nav label[for="book-tab-quotes"],
#book-tab-followups:checked ~ .book-tabs__nav label[for="book-tab-followups"] {
  color: var(--text);
  border-bottom-color: var(--accent);
}

#book-tab-review:checked ~ .book-tabs__panels .book-tabs__panel--review,
#book-tab-takeaways:checked ~ .book-tabs__panels .book-tabs__panel--takeaways,
#book-tab-quotes:checked ~ .book-tabs__panels .book-tabs__panel--quotes,
#book-tab-followups:checked ~ .book-tabs__panels .book-tabs__panel--followups {
  display: block;
}

.book-review {
  font-size: 17px;
  line-height: 1.8;
  color: var(--text);
}

.book-review p {
  margin: 0 0 16px;
}

.book-review p:last-child {
  margin-bottom: 0;
}

.book-takeaways {
  padding-left: 22px;
  margin: 0;
}

.book-takeaways li {
  font-size: 17px;
  line-height: 1.7;
  margin-bottom: 14px;
  color: var(--text);
}

.book-empty-state {
  max-width: 600px;
}

.book-quotes {
  display: grid;
  gap: 18px;
}

.book-quote {
  border: 1px solid var(--border);
  border-radius: 18px;
  background: color-mix(in srgb, var(--bg-soft) 72%, transparent);
  padding: 22px 24px;
}

.book-quote__text {
  margin: 0 0 14px;
  font-size: 18px;
  line-height: 1.8;
  color: var(--text);
  font-family: var(--font-display);
}

.book-quote__text br {
  content: "";
}

.book-quote__page {
  color: var(--text-muted);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.book-followup {
  border-left: 2px solid var(--border-strong);
  padding-left: 18px;
  margin-bottom: 28px;
}

.book-followup:last-child {
  margin-bottom: 0;
}

.book-followup__meta {
  justify-content: space-between;
  margin-bottom: 6px;
}

.book-followup__title {
  font-size: 19px;
  line-height: 1.3;
  margin-bottom: 8px;
}

.book-followup__body {
  margin: 0;
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.7;
}

.book-pagination {
  border-top: 1px solid var(--border);
  background: var(--bg-soft);
}

.book-pagination__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.book-pagination__item {
  display: block;
  text-decoration: none;
  color: var(--text);
}

.book-pagination__item--next {
  text-align: right;
}

.book-pagination__item--disabled {
  color: var(--text-dim);
}

.book-pagination__title {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 500;
  line-height: 1.3;
}

@media (max-width: 900px) {
  .book-detail__grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .book-detail__sidebar {
    position: static;
    max-width: 320px;
  }
}

@media (max-width: 640px) {
  .book-tabs__nav {
    gap: 16px;
  }

  .book-pagination__grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .book-pagination__item--next {
    text-align: left;
  }
}