:root {
  --bg: #f4eddb;
  --ink: #2f2619;
  --accent: #936e38;
  --accent-strong: #b5852e;
  --muted: rgba(47, 38, 25, 0.7);
  --surface: rgba(255, 255, 255, 0.6);
  --shadow: rgba(47, 38, 25, 0.1);
  --border: rgba(47, 38, 25, 0.2);
  --max-width: 1100px;
  --spacing: clamp(0.75rem, 2vw, 1.25rem);
  color-scheme: light;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", "URW Palladio L", Georgia, serif;
  line-height: 1.6;
  color: var(--ink);
  background-color: var(--bg);
  background-image:
    linear-gradient(145deg, rgba(255, 255, 255, 0.2), rgba(230, 220, 200, 0.5)),
    url("assets/texture.jpg");
  background-size: cover;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  padding: 0.5rem 1rem;
  background: #fff;
  color: var(--ink);
  border: 1px solid var(--border);
  z-index: 10;
}

.skip-link:focus {
  left: 1rem;
}

.site-header {
  background: rgba(255, 255, 255, 0.7);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 5px 20px var(--shadow);
}

.header-inner {
  margin: 0 auto;
  max-width: var(--max-width);
  padding: var(--spacing);
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--spacing);
}

.site-title {
  margin: 0;
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  letter-spacing: 0.05em;
}

.source-link {
  margin-left: auto;
  font-size: 0.95rem;
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.source-link:focus,
.source-link:hover {
  border-color: currentColor;
}

.site-main {
  flex: 1;
  margin: 0 auto;
  width: 100%;
  max-width: var(--max-width);
  padding: var(--spacing);
  display: flex;
  flex-direction: column;
  gap: var(--spacing);
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing);
  justify-content: space-between;
  align-items: center;
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid var(--border);
  padding: var(--spacing);
  box-shadow: 0 10px 20px var(--shadow);
  backdrop-filter: blur(3px);
}

.nav-buttons {
  display: flex;
  gap: 0.75rem;
  align-items: center;
}

button {
  font: inherit;
  padding: 0.45rem 0.95rem;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.8);
  color: var(--ink);
  border-radius: 0.25rem;
  cursor: pointer;
  transition: transform 150ms ease, background-color 150ms ease, box-shadow 150ms ease;
}

button:hover,
button:focus-visible {
  background-color: rgba(255, 255, 255, 0.95);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

button:active {
  transform: translateY(1px);
}

button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  box-shadow: none;
}

.jump-form {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}

.jump-form label {
  font-size: 0.95rem;
}

.jump-form input {
  width: 6ch;
  font: inherit;
  padding: 0.35rem 0.5rem;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.9);
  border-radius: 0.25rem;
  color: var(--ink);
}

.hint {
  font-size: 0.75rem;
  color: var(--muted);
}

.spread {
  display: grid;
  gap: var(--spacing);
  position: relative;
  min-height: 300px;
}

.loading,
.empty-state {
  margin: 0;
  padding: 2rem;
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid var(--border);
  box-shadow: 0 20px 40px var(--shadow);
  text-align: center;
  font-style: italic;
  color: var(--muted);
}

.page {
  background: rgba(255, 255, 255, 0.65);
  border: 1px solid rgba(0, 0, 0, 0.08);
  padding: clamp(1rem, 2vw, 1.5rem);
  box-shadow:
    inset 0 0 40px rgba(255, 255, 255, 0.5),
    0 30px 60px rgba(0, 0, 0, 0.15);
  position: relative;
  overflow: hidden;
}

.page::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at top, rgba(255, 255, 255, 0.3), transparent 60%);
  pointer-events: none;
}

.page header h2 {
  margin-top: 0;
  margin-bottom: 0.6rem;
  font-size: clamp(1.4rem, 2.5vw, 1.8rem);
  letter-spacing: 0.03em;
}

.page-content p {
  margin: 0 0 1rem 0;
  text-indent: 1.25rem;
  hyphens: auto;
}

.page-content p:first-of-type {
  text-indent: 0;
}

.page-content p:first-of-type::first-letter {
  float: left;
  font-size: 3.6rem;
  line-height: 1;
  margin-right: 0.3rem;
  margin-top: 0.08rem;
  color: var(--accent-strong);
  font-weight: 600;
}

.page-content h2 {
  font-size: 1.2rem;
  margin: 1rem 0 0.5rem 0;
  letter-spacing: 0.04em;
}

.page-footer {
  position: absolute;
  bottom: 0.75rem;
  right: 1rem;
  font-size: 0.8rem;
  color: var(--muted);
}

.spread.two-page {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.spread.two-page::before {
  content: "";
  position: absolute;
  top: 1.5rem;
  bottom: 1.5rem;
  left: 50%;
  width: 2px;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.2), transparent, rgba(0, 0, 0, 0.15));
  box-shadow: 0 0 25px rgba(0, 0, 0, 0.25);
  transform: translateX(-1px);
  pointer-events: none;
}

.site-footer {
  padding: var(--spacing);
  text-align: center;
  color: var(--muted);
}

#pageIndicator {
  font-variant-numeric: tabular-nums;
}

.error-banner {
  background: rgba(171, 64, 41, 0.15);
  border: 1px solid rgba(171, 64, 41, 0.4);
  padding: var(--spacing);
  display: flex;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
}

.error-banner[hidden] {
  display: none !important;
}

dialog {
  border: none;
  border-radius: 0.75rem;
  padding: 0;
  max-width: min(90vw, 500px);
  width: 100%;
  background: rgba(255, 255, 255, 0.95);
  color: var(--ink);
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.35);
}

dialog::backdrop {
  background-color: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(1px);
}

.toc-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border);
}

.toc-body {
  max-height: 60vh;
  overflow-y: auto;
  padding: 1rem 1.25rem 1.5rem;
  display: grid;
  gap: 0.5rem;
}

.toc-link {
  text-align: left;
  width: 100%;
  background: rgba(255, 255, 255, 0.75);
  border: 1px solid var(--border);
  padding: 0.65rem 0.8rem;
}

.toc-link span {
  display: block;
  font-size: 0.9rem;
  color: var(--muted);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.noscript-pages {
  display: grid;
  gap: var(--spacing);
}

@media (min-width: 900px) {
  .spread {
    gap: clamp(1rem, 3vw, 2.5rem);
  }

  .spread.two-page .page {
    min-height: 420px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

dialog.dialog-fallback {
  position: fixed;
  inset: 10vh auto auto 50%;
  transform: translateX(-50%);
  display: none;
  z-index: 20;
}

dialog.dialog-fallback.dialog-visible {
  display: block;
}

body.dialog-fallback-open::before {
  content: "";
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  z-index: 19;
}