:root {
  --ink: #2f2928;
  --muted: #716867;
  --paper: #fffdf9;
  --background: #eee8e2;
  --accent: #6e514c;
  --accent-dark: #513b37;
  --line: #d8cec5;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: Georgia, "Times New Roman", serif;
  color: var(--ink);
  background: linear-gradient(180deg, #e8dfd8 0%, #f6f2ee 42%, #eee8e2 100%);
}

.site-header {
  padding: 2.6rem 1rem 1.6rem;
  text-align: center;
}

.header-inner { max-width: 860px; margin: 0 auto; }
.eyebrow {
  margin: 0 0 .45rem;
  text-transform: uppercase;
  letter-spacing: .18em;
  font-size: .78rem;
  color: var(--muted);
}

h1 {
  margin: 0;
  font-size: clamp(2.1rem, 5vw, 4rem);
  font-weight: 500;
  line-height: 1.05;
}
.subtitle {
  margin: .65rem 0 0;
  color: var(--muted);
  font-size: 1rem;
}

.main-content {
  width: min(100% - 2rem, 1120px);
  margin: 0 auto;
}

.tribute-reader {
  padding: 1rem 0 2rem;
}

.book-shell {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr) 52px;
  gap: 1rem;
  align-items: center;
}

.page-frame {
  margin: 0 auto;
  width: min(100%, 760px);
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 4px;
  box-shadow: 0 18px 44px rgba(49, 39, 34, .18), 0 3px 9px rgba(49, 39, 34, .12);
  overflow: hidden;
}

.page-frame img {
  display: block;
  width: 100%;
  height: auto;
  background: #fff;
  transition: opacity .18s ease, transform .18s ease;
}
.page-frame img.changing {
  opacity: .3;
  transform: scale(.992);
}
.page-frame figcaption {
  padding: .6rem .9rem;
  text-align: center;
  font-family: Arial, Helvetica, sans-serif;
  font-size: .82rem;
  color: var(--muted);
  border-top: 1px solid var(--line);
  background: #faf7f3;
}

.nav-button {
  border: 0;
  width: 48px;
  height: 68px;
  border-radius: 999px;
  background: rgba(81, 59, 55, .88);
  color: #fff;
  font-size: 1.8rem;
  cursor: pointer;
  box-shadow: 0 3px 12px rgba(0,0,0,.16);
}
.nav-button:hover, .nav-button:focus-visible { background: var(--accent-dark); }
.nav-button:disabled { opacity: .25; cursor: default; }

.controls {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: .8rem;
  flex-wrap: wrap;
  margin: 1.25rem auto 0;
  font-family: Arial, Helvetica, sans-serif;
}
.controls button, .controls select {
  font: inherit;
  border: 1px solid #ad9d94;
  border-radius: 6px;
  background: #fff;
  color: var(--ink);
  padding: .62rem .9rem;
}
.controls button { cursor: pointer; }
.controls button:hover, .controls button:focus-visible { border-color: var(--accent); background: #f8f3ef; }
.controls button:disabled { opacity: .45; cursor: default; }
.page-selector { display: flex; align-items: center; gap: .45rem; color: var(--muted); }

.transcript-panel, .preservation-note {
  width: min(100%, 760px);
  margin: 1rem auto 0;
  background: rgba(255,255,255,.65);
  border: 1px solid var(--line);
  border-radius: 8px;
}
.transcript-panel summary {
  cursor: pointer;
  padding: .9rem 1rem;
  font-family: Arial, Helvetica, sans-serif;
  font-weight: 600;
}
.transcript {
  white-space: pre-wrap;
  line-height: 1.65;
  padding: 0 1.2rem 1.2rem;
}
.preservation-note { padding: 1.1rem 1.4rem; margin-bottom: 2rem; }
.preservation-note h2 { margin-top: 0; font-size: 1.25rem; }
.preservation-note p { line-height: 1.6; margin-bottom: 0; }
.site-footer {
  text-align: center;
  padding: 1.5rem 1rem 2.5rem;
  color: var(--muted);
  font-size: .86rem;
}

@media (max-width: 720px) {
  .site-header { padding-top: 1.7rem; }
  .main-content { width: min(100% - 1rem, 1120px); }
  .book-shell { grid-template-columns: 1fr; gap: .7rem; }
  .nav-button { display: none; }
  .page-frame { width: 100%; }
}

@media print {
  body { background: #fff; }
  .site-header, .controls, .nav-button, .transcript-panel, .preservation-note, .site-footer { display: none !important; }
  .main-content { width: 100%; }
  .book-shell { display: block; }
  .page-frame { border: 0; box-shadow: none; width: 100%; }
  .page-frame figcaption { display: none; }
}