:root { color-scheme: light dark; --ground: #ebece9; --panel: #fafbf9; --ink: #242923; --muted: #555e52; --rule: #cbcfc5; --accent: var(--product-color, #345d40); }
* { box-sizing: border-box; }
body { margin: 0; background: var(--ground); color: var(--ink); font: 16px/1.5 system-ui, sans-serif; }
a { color: var(--accent); }
button, input, .control { font: inherit; min-height: 44px; border: 1px solid var(--rule); border-radius: 6px; color: var(--ink); background: var(--panel); padding: 8px 12px; }
button { cursor: pointer; }
button:hover:not(:disabled), .control:hover { border-color: var(--accent); }
button:disabled { opacity: .45; cursor: default; }
button[aria-pressed="true"] { background: var(--accent); color: white; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; }
.reader-header { display: flex; align-items: center; gap: 24px; padding: 18px 28px; background: var(--panel); border-bottom: 1px solid var(--rule); }
.back { flex-shrink: 0; padding-block: 10px; }
.book-heading { min-width: 0; flex: 1; }
h1 { font: 600 20px/1.3 Georgia, serif; margin: 0; overflow-wrap: anywhere; }
#author { color: var(--muted); font-size: 13px; margin: 5px 0 0; }
.control { text-decoration: none; flex-shrink: 0; }
.toolbar { display: flex; flex-wrap: wrap; gap: 8px 20px; justify-content: center; padding: 12px 20px; background: var(--panel); border-bottom: 1px solid var(--rule); position: sticky; top: 0; z-index: 5; }
.control-group, #jump { display: flex; align-items: center; gap: 6px; }
.control-group { flex-wrap: wrap; justify-content: center; }
#jump label, #total { font-size: 12px; color: var(--muted); }
#page { width: 68px; padding-inline: 6px; }
.reader-layout { display: grid; grid-template-columns: 210px minmax(0, 1fr); max-width: 1800px; margin: auto; }
aside { padding: 20px 14px; }
details { border-bottom: 1px solid var(--rule); padding: 10px 0; }
summary { padding: 8px 0; cursor: pointer; min-height: 44px; }
aside nav { display: grid; gap: 6px; max-height: 50vh; overflow: auto; }
aside nav button { text-align: left; font-size: 13px; }
aside input { width: 100%; min-width: 0; }
aside label { display: block; font-size: 13px; }
main { min-width: 0; padding: 12px 24px 48px; }
#status, #page-note { color: var(--muted); font-size: 13px; text-align: center; margin: 8px 0 14px; }
#status.error { color: #b43b2e; }
#viewport { overflow: auto; padding: 4px; max-height: 82vh; overscroll-behavior: contain; }
#sheet { position: relative; margin: 0 auto; background: white; box-shadow: 0 3px 18px #0002; }
canvas { display: block; }
.textLayer { position: absolute; inset: 0; }
.textLayer .reader-match { background: #ffe17788; }
#plain-text { margin-top: 14px; max-width: 78ch; margin-inline: auto; }
#transcript { white-space: pre-wrap; font: 18px/1.8 Georgia, serif; }
#password-form { max-width: 360px; margin: 24px auto; }
#password-form label { display: block; }
@media (prefers-color-scheme: dark) { :root { --ground: #171c1a; --panel: #242927; --ink: #e6ece3; --muted: #b2bfb0; --rule: #455247; --accent: color-mix(in srgb, var(--product-color, #345d40) 40%, white); } button[aria-pressed="true"] { color: #172019; } }
@media (max-width: 700px) {
  .reader-header { flex-wrap: wrap; gap: 10px 16px; padding: 12px 16px; }
  .book-heading { order: 3; flex-basis: 100%; }
  .control { margin-left: auto; font-size: 13px; }
  .back { font-size: 13px; }
  .toolbar { padding: 8px; gap: 8px; position: static; }
  #jump label { display: none; }
  .reader-layout { display: block; }
  aside { padding: 0 16px; display: flex; flex-wrap: wrap; gap: 0 18px; }
  aside details[open] { width: 100%; }
  main { padding: 8px 8px 32px; }
  #viewport { max-height: 75vh; }
}