/* The opaque chapter follows the sticky notes in normal document flow. */
.blue-book-scene {
  position: relative;
  z-index: 4;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 420px;
  align-content: start;
  min-height: 100vh;
  min-height: 100svh;
  padding: max(120px, 14vh) clamp(2vw, 3vw, 5vw) 24px;
  direction: ltr;
  isolation: isolate;
  background: var(--paper);
}

.blue-book-visual {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.blue-book-screen {
  position: absolute;
  inset: 0;
  background: #faf8f6;
}

.blue-book-illustration {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  user-select: none;
}

.blue-book-card {
  position: relative;
  z-index: 1;
  grid-column: 2;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 40px;
  width: 420px;
  padding: 24px 0 16px;
  border: 2px solid #2b1a07;
  border-radius: 12px;
  overflow: hidden;
  color: #2b1a07;
  background: #fffcf9;
  box-shadow: 0 2px 20px rgb(0 0 0 / 0.06);
}

.blue-book-title {
  margin: 0;
  padding-inline: 32px;
  font-size: 36px;
  font-weight: 400;
  line-height: 1.2;
  text-align: right;
}

.blue-book-title > span {
  display: block;
}

.blue-book-title em {
  color: #3b82f6;
  font-style: normal;
}

.blue-book-options {
  display: flex;
  flex-direction: column;
  gap: 12px;
  width: 100%;
  margin: 0;
  padding: 0;
  list-style: none;
}

.blue-book-options > li::before {
  display: block;
  height: 1px;
  margin-bottom: 12px;
  background: #ded6d2;
  content: "";
}

.blue-book-option {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  margin: 0;
  padding: 0 28px 0 32px;
  border: 0;
  direction: ltr;
  color: inherit;
  background: transparent;
  font: inherit;
  font-size: 20px;
  line-height: 1.5;
}

.blue-book-option-label {
  flex: 1;
  min-width: 0;
  text-align: right;
  font-weight: 400;
  transition: color 300ms;
}

.blue-book-option-number {
  flex: 0 0 40px;
  margin-left: 16px;
  text-align: center;
  opacity: 0.8;
}

.blue-book-option[aria-pressed="true"] .blue-book-option-label {
  color: #3b82f6;
  font-weight: 500;
}

.blue-book-option[aria-pressed="true"] .blue-book-option-number {
  opacity: 1;
}

.blue-book-option:focus-visible {
  outline: 2px solid #3b82f6;
  outline-offset: -2px;
}

@media (hover: hover) {
  .blue-book-option:hover .blue-book-option-label {
    color: #3b82f6;
  }
}

@media (min-width: 768px) and (max-width: 1023px) {
  .blue-book-scene {
    grid-template-columns: minmax(0, 1fr) 356px;
    align-content: end;
    padding: 24px 16px;
  }

  .blue-book-card {
    gap: 28px;
    width: 356px;
    padding-bottom: 20px;
    transform: scale(0.85);
    transform-origin: bottom right;
  }

  .blue-book-title {
    padding-inline: 24px;
    font-size: 26px;
    line-height: 1.4;
  }

  .blue-book-options {
    gap: 10px;
  }

  .blue-book-options > li::before {
    margin-bottom: 10px;
  }

  .blue-book-option {
    padding-inline: 24px;
    font-size: 16px;
  }

  .blue-book-option-number {
    flex-basis: 32px;
  }
}

@media (max-width: 767px) {
  .blue-book-scene {
    display: flex;
    flex-direction: column;
    padding: 0;
  }

  .blue-book-visual {
    position: relative;
    inset: auto;
    flex: none;
    width: 100%;
    aspect-ratio: 4 / 5;
  }

  .blue-book-card {
    flex: none;
    gap: 24px;
    width: 100%;
    padding: 24px 0;
    border: 0;
    border-radius: 0;
    background: transparent;
    box-shadow: none;
  }

  .blue-book-title {
    font-size: 26px;
    line-height: 1.4;
  }

  .blue-book-options {
    gap: 8px;
  }

  .blue-book-options > li::before {
    margin-bottom: 8px;
  }

  .blue-book-option {
    padding: 4px 32px;
    font-size: 16px;
  }

  .blue-book-option-number {
    flex-basis: 28px;
  }
}

@media (min-width: 640px) and (max-width: 767px) {
  .blue-book-visual {
    aspect-ratio: 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .blue-book-option-label {
    transition: none;
  }
}