.reader-edition-header,
.reader-layout {
  width: min(1480px, calc(100% - 3rem));
  margin-inline: auto;
}

.reader-edition-header {
  padding: clamp(2.1rem, 4vw, 3.8rem) 0 1.35rem;
}

.reader-edition-header h1 {
  max-width: 30ch;
  margin: 0.55rem 0 0.65rem;
  font: 700 clamp(2.25rem, 4.4vw, 4rem) / 1.04 Georgia, "Times New Roman", serif;
  text-wrap: balance;
}

.reader-status-row,
.reader-edition-meta,
.reader-language-switch {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
}

.reader-status-row {
  gap: 0.45rem 0.8rem;
  color: var(--tm-muted);
  font-size: 0.72rem;
  font-weight: 750;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.reader-status-badge {
  padding: 0.28rem 0.48rem;
  border: 1px solid color-mix(in srgb, var(--tm-green) 42%, var(--tm-line));
  border-radius: 0.25rem;
  color: var(--tm-green);
  background: var(--tm-green-soft);
}

.reader-edition-label {
  max-width: 72ch;
  margin: 0;
  color: var(--tm-muted);
  font-size: clamp(1rem, 1.6vw, 1.16rem);
  line-height: 1.6;
}

.reader-edition-meta {
  gap: 0.55rem 1rem;
  margin-top: 1rem;
  color: var(--tm-muted);
  font-size: 0.74rem;
  font-weight: 720;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.reader-language-switch {
  gap: 0.25rem;
}

.reader-language-switch a {
  min-width: 2.2rem;
  padding: 0.25rem 0.42rem;
  border-radius: 0.25rem;
  color: var(--tm-muted);
  text-align: center;
  text-decoration: none;
}

.reader-language-switch a:hover,
.reader-language-switch a:focus-visible,
.reader-language-switch a[aria-current="page"] {
  color: var(--tm-surface);
  background: var(--tm-green);
}

.reader-language-note {
  max-width: 72ch;
  margin: 0.65rem 0 0;
  color: var(--tm-muted);
  font-size: 0.82rem;
}

.reader-layout {
  display: grid;
  grid-template-columns: clamp(18rem, 25vw, 20rem) minmax(0, 1fr);
  gap: clamp(1.25rem, 2.2vw, 2.5rem);
  align-items: start;
}

.reader-toc-panel {
  position: sticky;
  z-index: 4;
  top: 1rem;
  display: flex;
  max-height: calc(100vh - 2rem);
  overflow: hidden;
  border: 1px solid var(--tm-line);
  border-radius: var(--tm-radius);
  background: var(--tm-surface);
  box-shadow: var(--tm-shadow);
  flex-direction: column;
}

.reader-toc-header,
.reader-toc-tool-row,
.reader-toc-line {
  display: flex;
  align-items: center;
}

.reader-toc-header {
  justify-content: space-between;
  gap: 1rem;
  padding: 0.95rem 1rem 0.75rem;
  border-bottom: 1px solid var(--tm-line);
}

.reader-toc-kicker,
.reader-toc-total {
  margin: 0;
}

.reader-toc-kicker {
  color: var(--tm-ink);
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.reader-toc-total {
  margin-top: 0.12rem;
  color: var(--tm-muted);
  font-size: 0.7rem;
}

.reader-toc-close {
  display: none;
  width: 2.5rem;
  height: 2.5rem;
  border: 0;
  border-radius: 50%;
  color: var(--tm-muted);
  background: var(--tm-surface-soft);
  font-size: 1.55rem;
  line-height: 1;
  cursor: pointer;
}

.reader-toc-tools {
  padding: 0.75rem;
  border-bottom: 1px solid var(--tm-line);
}

.reader-toc-tools input {
  width: 100%;
  min-height: 2.65rem;
  padding: 0.55rem 0.7rem;
  border: 1px solid var(--tm-line);
  border-radius: 0.45rem;
  color: var(--tm-ink);
  background: var(--tm-surface-soft);
}

.reader-toc-tools input:focus {
  border-color: var(--tm-green);
  outline: 2px solid color-mix(in srgb, var(--tm-green) 24%, transparent);
  outline-offset: 1px;
}

.reader-toc-tool-row {
  justify-content: space-between;
  gap: 0.75rem;
  margin-top: 0.55rem;
  color: var(--tm-muted);
  font-size: 0.69rem;
}

.reader-toc-tool-row button {
  padding: 0;
  border: 0;
  color: var(--tm-green);
  background: transparent;
  font-weight: 750;
  cursor: pointer;
}

.reader-toc-scroll {
  min-height: 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  scrollbar-gutter: stable;
}

.reader-toc-tree {
  margin: 0;
  padding: 0.55rem;
  list-style: none;
}

.reader-toc-item[hidden],
.reader-toc-empty[hidden],
.reader-toc-overlay[hidden] {
  display: none !important;
}

.reader-toc-line {
  min-height: 2.35rem;
  padding-left: calc((var(--toc-level, 1) - 1) * 0.72rem);
  border-left: 3px solid transparent;
  border-radius: 0.35rem;
}

.reader-toc-item[aria-level="1"] .reader-toc-line {
  --toc-level: 1;
}

.reader-toc-item[aria-level="2"] .reader-toc-line {
  --toc-level: 2;
}

.reader-toc-item[aria-level="3"] .reader-toc-line {
  --toc-level: 3;
}

.reader-toc-item[aria-level="4"] .reader-toc-line {
  --toc-level: 4;
}

.reader-toc-item[aria-level="5"] .reader-toc-line {
  --toc-level: 5;
}

.reader-toc-line:hover,
.reader-toc-item:focus-within .reader-toc-line {
  background: var(--tm-surface-soft);
}

.reader-toc-item[data-current="true"] .reader-toc-line {
  border-left-color: var(--tm-green);
  background: var(--tm-green-soft);
}

.reader-toc-toggle,
.reader-toc-spacer {
  width: 1.75rem;
  min-width: 1.75rem;
}

.reader-toc-toggle {
  height: 1.75rem;
  padding: 0;
  border: 0;
  border-radius: 0.25rem;
  color: var(--tm-muted);
  background: transparent;
  cursor: pointer;
}

.reader-toc-toggle span {
  display: inline-block;
  font-size: 1.15rem;
  transform-origin: center;
  transition: transform 150ms ease;
}

.reader-toc-toggle[aria-expanded="true"] span {
  transform: rotate(90deg);
}

.reader-toc-line a {
  display: -webkit-box;
  min-width: 0;
  padding: 0.44rem 0.35rem 0.44rem 0.05rem;
  overflow: hidden;
  color: var(--tm-muted);
  font-size: 0.76rem;
  line-height: 1.35;
  text-decoration: none;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

.reader-toc-item-section > .reader-toc-line a,
.reader-toc-item-subsection > .reader-toc-line a,
.reader-toc-item-chapter > .reader-toc-line a {
  color: var(--tm-ink);
  font-weight: 780;
}

.reader-toc-item[data-current="true"] a {
  color: var(--tm-green-deep);
  font-weight: 800;
}

.reader-toc-toggle:focus-visible,
.reader-toc-line a:focus-visible,
.reader-toc-tool-row button:focus-visible,
.reader-toc-close:focus-visible,
.reader-toc-mobile-trigger:focus-visible {
  outline: 2px solid var(--tm-green);
  outline-offset: 2px;
}

.reader-toc-empty {
  margin: 0;
  padding: 1rem;
  color: var(--tm-muted);
  font-size: 0.82rem;
}

.edition-tree[data-reader-document] {
  width: 100%;
  padding: 0 0 clamp(2rem, 6vw, 5rem);
}

.edition-tree[data-reader-document] .node {
  scroll-margin-top: 132px;
}

.edition-tree[data-reader-document] .node-text {
  max-width: 92ch;
  text-wrap: pretty;
}

.reader-toc-mobile-trigger,
.reader-toc-overlay {
  display: none;
}

@media (max-width: 999px) {
  body.reader-toc-is-open {
    overflow: hidden;
  }

  .reader-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .reader-toc-mobile-trigger {
    position: fixed;
    z-index: 31;
    right: 1rem;
    bottom: max(1rem, env(safe-area-inset-bottom));
    display: inline-flex;
    max-width: calc(100% - 2rem);
    min-height: 3rem;
    align-items: center;
    gap: 0.55rem;
    padding: 0.72rem 1rem;
    overflow: hidden;
    border: 1px solid color-mix(in srgb, var(--tm-green) 70%, black);
    border-radius: 999px;
    color: white;
    background: var(--tm-green);
    box-shadow: 0 14px 36px rgb(8 58 43 / 28%);
    font-weight: 800;
    text-overflow: ellipsis;
    white-space: nowrap;
    cursor: pointer;
  }

  .reader-toc-overlay {
    position: fixed;
    z-index: 32;
    inset: 0;
    display: block;
    border: 0;
    background: rgb(0 0 0 / 48%);
    cursor: default;
  }

  .reader-toc-panel {
    position: fixed;
    z-index: 33;
    top: auto;
    right: 0;
    bottom: 0;
    left: 0;
    max-height: min(86vh, 52rem);
    border-radius: 1rem 1rem 0 0;
    transform: translateY(105%);
    transition: transform 180ms ease;
  }

  .reader-toc-panel[data-open="true"] {
    transform: translateY(0);
  }

  .reader-toc-close {
    display: inline-grid;
    place-items: center;
  }

  .reader-toc-line {
    min-height: 2.75rem;
  }

  .reader-toc-toggle {
    width: 2.25rem;
    min-width: 2.25rem;
    height: 2.25rem;
  }

  .reader-toc-line a {
    min-height: 2.75rem;
    align-content: center;
    font-size: 0.84rem;
  }

  .edition-tree[data-reader-document] {
    width: min(100%, 76ch);
    margin-inline: auto;
  }
}

@media (max-width: 680px) {
  .reader-edition-header,
  .reader-layout {
    width: min(100% - 1.25rem, var(--tm-width));
  }

  .reader-edition-header h1 {
    font-size: clamp(2rem, 11vw, 3rem);
  }

  .reader-edition-meta {
    align-items: flex-start;
    flex-direction: column;
  }

  .edition-tree[data-reader-document] {
    padding-inline: 0;
  }

  .reader-toc-tools {
    padding-inline: 1rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .reader-toc-panel,
  .reader-toc-toggle span {
    transition: none;
  }
}