:root {
  --bg: #fbf8f2;
  --panel: #f3eee4;
  --fg: #2b2622;
  --muted: #8a7f74;
  --line: #e4dccf;
  --hover: #ebe3d5;
  --accent: #8b3a2b;
  --mark: #f6dd9b;
  --poem-size: 1.2rem;
  --topbar: 56px;
  color-scheme: light;
}

:root[data-theme="dark"] {
  --bg: #1b1917;
  --panel: #23201d;
  --fg: #e8e1d6;
  --muted: #998e82;
  --line: #36312c;
  --hover: #2f2a25;
  --accent: #e0957f;
  --mark: #6b5420;
  color-scheme: dark;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #1b1917;
    --panel: #23201d;
    --fg: #e8e1d6;
    --muted: #998e82;
    --line: #36312c;
    --hover: #2f2a25;
    --accent: #e0957f;
    --mark: #6b5420;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 12px;
  height: var(--topbar);
  padding: 0 16px;
  background: var(--panel);
  border-bottom: 1px solid var(--line);
}

.brand {
  font: 600 1.3rem Georgia, "PT Serif", serif;
  color: var(--fg);
  white-space: nowrap;
}
.brand:hover { text-decoration: none; }

.search {
  flex: 1;
  max-width: 420px;
  margin-left: auto;
  padding: 7px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--bg);
  color: var(--fg);
  font: inherit;
}
.search:focus { outline: 2px solid var(--accent); outline-offset: -1px; }

.tools { display: flex; gap: 4px; }

.icon-btn {
  min-width: 36px;
  height: 36px;
  padding: 0 8px;
  border: 1px solid transparent;
  border-radius: 8px;
  background: none;
  color: var(--fg);
  font: 600 1rem system-ui, sans-serif;
  cursor: pointer;
}
.icon-btn:hover { background: var(--hover); border-color: var(--line); }
.menu-btn { display: none; font-size: 1.3rem; }

.layout {
  display: grid;
  grid-template-columns: 320px 1fr;
}

.sidebar {
  position: sticky;
  top: var(--topbar);
  height: calc(100vh - var(--topbar));
  overflow-y: auto;
  padding: 12px 8px 40px;
  background: var(--panel);
  border-right: 1px solid var(--line);
}

.sidebar summary {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  padding: 7px 10px;
  border-radius: 6px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
}
.sidebar summary::-webkit-details-marker { display: none; }
.sidebar summary::before { content: "▸"; color: var(--muted); margin-right: -2px; }
.sidebar details[open] > summary::before { content: "▾"; }
.sidebar summary > span:first-child { flex: 1; }
.sidebar summary:hover { background: var(--hover); }
.count { color: var(--muted); font-weight: 400; font-size: .85rem; }

.toc { list-style: none; margin: 2px 0 10px; padding: 0 0 0 18px; }
.toc a {
  display: block;
  padding: 3px 10px;
  border-radius: 6px;
  color: var(--fg);
  font-size: .93rem;
  line-height: 1.35;
}
.toc a:hover { background: var(--hover); text-decoration: none; }
.sidebar-about { display: block; margin: 14px 2px 0; padding: 10px; border-top: 1px solid var(--line); font-weight: 600; }
.toc a.active { background: var(--accent); color: var(--bg); }

.main {
  min-width: 0;
  width: 100%;
  max-width: 820px;
  margin: 0 auto;
  padding: 40px 48px 80px;
}

.main h1 {
  margin: 0 0 8px;
  font: 600 2rem/1.25 Georgia, "PT Serif", serif;
}
.home-title { font-size: 2.6rem !important; }

.muted { color: var(--muted); }
.crumbs { display: flex; justify-content: space-between; margin: 0 0 12px; font-size: .95rem; }
.num { color: var(--muted); font-variant-numeric: tabular-nums; }
.continue { margin: 16px 0 0; }

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 12px;
  margin-top: 28px;
}
.card {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--panel);
  color: var(--fg);
}
.card:hover { border-color: var(--accent); text-decoration: none; }
.card-title { font: 600 1.15rem Georgia, "PT Serif", serif; }

.poem-list { list-style: none; margin: 24px 0 0; padding: 0; }
.poem-list li { border-bottom: 1px solid var(--line); }
.poem-list a { display: flex; gap: 14px; padding: 10px 4px; color: var(--fg); }
.poem-list a:hover { background: var(--hover); text-decoration: none; }
.poem-list .title { font-family: Georgia, "PT Serif", serif; font-size: 1.08rem; }
.snippet { padding: 0 4px 10px 58px; color: var(--muted); font-size: .93rem; white-space: pre-wrap; }
mark { background: var(--mark); color: inherit; border-radius: 2px; }
.result-group { margin: 28px 0 0; color: var(--muted); font: 600 .95rem system-ui, sans-serif; text-transform: uppercase; letter-spacing: .04em; }
.result-group + .poem-list { margin-top: 8px; }

.poem h1 { margin-bottom: 28px; }
.poem-text {
  white-space: pre-wrap;
  font-family: Georgia, "PT Serif", "Times New Roman", serif;
  font-size: var(--poem-size);
  line-height: 1.7;
}
.meta { margin-top: 36px; color: var(--muted); font-size: .9rem; }

.pager {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}
.pager a {
  display: flex;
  flex-direction: column;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 10px;
  color: var(--fg);
}
.pager a:hover { border-color: var(--accent); text-decoration: none; }
.pager small { color: var(--muted); }
.pager .next { text-align: right; }

.book-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--fg);
  font-weight: 600;
  white-space: nowrap;
}
.book-link:hover { border-color: var(--accent); text-decoration: none; }
.badge:empty { display: none; }
.badge {
  min-width: 20px;
  padding: 0 6px;
  border-radius: 10px;
  background: var(--accent);
  color: var(--bg);
  font-size: .8rem;
  text-align: center;
}

.toc a.in-book::after { content: " ●"; color: var(--accent); font-size: .7em; vertical-align: middle; }
.toc a.active.in-book::after { color: var(--bg); }

.book-toggle {
  padding: 6px 14px;
  border: 1px solid var(--accent);
  border-radius: 999px;
  background: none;
  color: var(--accent);
  font: 600 .9rem system-ui, sans-serif;
  white-space: nowrap;
  cursor: pointer;
}
.book-toggle:hover { background: var(--hover); }
.book-toggle.on { background: var(--accent); color: var(--bg); }
.book-toggle.compact { min-width: 32px; padding: 3px 8px; }

.poem-row { display: flex; align-items: center; gap: 8px; }
.poem-row > a { flex: 1; min-width: 0; }
.section-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.poem-foot { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-top: 36px; }
.poem-foot .meta { margin: 0; }
.poem-actions { display: flex; gap: 8px; flex-wrap: wrap; }

.book-stats { font-size: 1.05rem; }
.warn { color: var(--accent); }

.book-toolbar { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin: 20px 0 8px; }
.chip {
  padding: 5px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--panel);
  color: var(--fg);
  font: inherit;
  font-size: .9rem;
  cursor: pointer;
}
.chip:hover { border-color: var(--accent); }

.book-list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.book-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 4px;
  border-bottom: 1px solid var(--line);
  background: var(--bg);
}
.book-list li.dragging { opacity: .4; }
.book-list li.drop-target { box-shadow: inset 0 2px 0 var(--accent); }
.book-list .handle { color: var(--muted); cursor: grab; user-select: none; letter-spacing: -3px; padding: 0 4px; }
.book-list .num { width: 2.2em; text-align: right; }
.book-item { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.book-item a { color: var(--fg); font-family: Georgia, "PT Serif", serif; font-size: 1.05rem; }
.book-item small { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.icon-btn:disabled { opacity: .3; cursor: default; background: none; border-color: transparent; }

.book-settings { margin-top: 36px; display: flex; flex-direction: column; gap: 14px; }
.book-settings h2 { margin: 0; font: 600 1.3rem Georgia, "PT Serif", serif; }
.field { display: flex; flex-direction: column; gap: 4px; }
.field span { font-size: .9rem; color: var(--muted); }
.field input, .field textarea {
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  color: var(--fg);
  font: inherit;
  resize: vertical;
}
.check { display: flex; align-items: center; gap: 6px; cursor: pointer; }
.check input { width: 16px; height: 16px; accent-color: var(--accent); }

.book-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 28px; }
.primary, .secondary {
  padding: 10px 20px;
  border-radius: 10px;
  font: 600 1rem system-ui, sans-serif;
  cursor: pointer;
}
.primary { border: 1px solid var(--accent); background: var(--accent); color: var(--bg); }
.primary:disabled { opacity: .4; cursor: default; }
.secondary { border: 1px solid var(--line); background: none; color: var(--fg); }
.secondary:hover { border-color: var(--accent); }

.outputs {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 16px;
  margin-top: 32px;
}
.output-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--panel);
}
.output-card h2 { margin: 0; font: 600 1.25rem Georgia, "PT Serif", serif; }
.output-card p { margin: 0; }
.output-card .book-actions { margin-top: 6px; }
.output-card .help { margin-top: 4px; padding: 0; border: 0; }

.help { margin-top: 32px; padding: 14px 18px; border: 1px solid var(--line); border-radius: 10px; background: var(--panel); }
.help summary { font-weight: 600; cursor: pointer; }
.help ol { margin: 12px 0 0; padding-left: 20px; }
.help li { margin-bottom: 6px; }

.qr-dialog { padding: 0; border: 1px solid var(--line); border-radius: 12px; background: var(--bg); color: var(--fg); max-width: calc(100vw - 32px); }
.qr-dialog::backdrop { background: rgba(0, 0, 0, .45); }
.qr-box { width: 320px; max-width: 100%; padding: 22px; text-align: center; }
.qr-title { margin: 0 0 14px; font: 600 1.25rem Georgia, "PT Serif", serif; }
.qr-tabs { display: inline-flex; gap: 4px; margin-bottom: 14px; }
.qr-tabs[hidden] { display: none; }
.qr-tabs button { padding: 5px 12px; border: 1px solid var(--line); border-radius: 999px; background: none; color: var(--fg); font: inherit; font-size: .9rem; cursor: pointer; }
.qr-tabs button[aria-pressed="true"] { border-color: var(--accent); color: var(--accent); }
.qr-code svg { display: block; width: 100%; max-width: 250px; margin: 0 auto; border-radius: 6px; }
.qr-url { display: block; margin: 12px 0 4px; font-size: .85rem; word-break: break-all; }
.qr-hint { margin: 0 0 16px; color: var(--muted); font-size: .85rem; }
.qr-close { padding: 7px 18px; border: 1px solid var(--line); border-radius: 8px; background: var(--panel); color: var(--fg); font: inherit; cursor: pointer; }
.qr-close:hover { border-color: var(--accent); }

.backdrop { display: none; }

@media (max-width: 860px) {
  .layout { display: block; }
  .menu-btn { display: inline-block; }
  .tools #smallerBtn, .tools #largerBtn { display: none; }
  .sidebar {
    position: fixed;
    z-index: 30;
    top: var(--topbar);
    left: 0;
    width: min(320px, 85vw);
    transform: translateX(-100%);
    transition: transform .2s ease;
  }
  body.menu-open .sidebar { transform: none; }
  body.menu-open .backdrop {
    display: block;
    position: fixed;
    inset: var(--topbar) 0 0 0;
    z-index: 25;
    background: rgba(0, 0, 0, .35);
  }
  .main { padding: 24px 18px 60px; }
  .main h1 { font-size: 1.6rem; }
  .brand { font-size: 1.1rem; }
}