:root {
  --paper: #f7f1e3;
  --paper-soft: #efe6d2;
  --ink: #2b2118;
  --ink-soft: #6b5d4d;
  --accent: #8a5a2b;
  --card: #fffdf7;
  --line: #e2d7bf;
  --hl-yellow: #ffe58a;
  --hl-green: #b7e4b0;
  --hl-blue: #bcd7f5;
  --hl-pink: #f5b8d0;
}
[data-theme="night"] {
  --paper: #161310;
  --paper-soft: #1f1a15;
  --ink: #e8ddc9;
  --ink-soft: #a89a83;
  --accent: #d9a45b;
  --card: #201b16;
  --line: #38302a;
  --hl-yellow: #6b5d1e;
  --hl-green: #2e5b2e;
  --hl-blue: #2e4a6b;
  --hl-pink: #6b2e4a;
}
* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--paper);
  color: var(--ink);
  font-family: -apple-system, "Segoe UI", Roboto, sans-serif;
  transition: background .25s, color .25s;
}
.hidden { display: none !important; }
.view { min-height: 100dvh; display: flex; flex-direction: column; }

/* ---------- Library ---------- */
.lib-header { padding: 28px 20px 8px; max-width: 1100px; margin: 0 auto; width: 100%; }
.lib-title h1 { font-family: Georgia, serif; font-size: 1.7rem; margin: 0; color: var(--ink); }
.lib-title p { margin: 4px 0 0; color: var(--ink-soft); font-size: .95rem; }
.lib-tools { display: flex; gap: 10px; margin-top: 16px; }
#search {
  flex: 1; padding: 12px 16px; font-size: 1rem; border-radius: 999px;
  border: 1px solid var(--line); background: var(--card); color: var(--ink);
}
.icon-btn {
  border: 1px solid var(--line); background: var(--card); color: var(--ink);
  border-radius: 999px; width: 46px; height: 46px; font-size: 1.25rem; cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center; flex: none;
}
.continue-row { max-width: 1100px; margin: 0 auto; width: 100%; padding: 8px 20px 0; }
.continue-row h2 { font-size: 1rem; color: var(--ink-soft); margin: 8px 0; font-weight: 600; }
.continue-list { display: flex; gap: 10px; overflow-x: auto; padding-bottom: 6px; }
.continue-card {
  flex: none; width: 210px; background: var(--card); border: 1px solid var(--line);
  border-radius: 12px; padding: 10px 12px; cursor: pointer; text-align: left; color: var(--ink);
}
.continue-card .cc-title { font-weight: 600; font-size: .9rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.continue-card .cc-ch { font-size: .8rem; color: var(--ink-soft); margin-top: 2px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.shelf {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 18px; padding: 18px 20px 40px; max-width: 1100px; margin: 0 auto; width: 100%;
}
.book-card {
  background: var(--card); border: 1px solid var(--line); border-radius: 14px;
  overflow: hidden; cursor: pointer; text-align: left; padding: 0; color: var(--ink);
  display: flex; flex-direction: column; transition: transform .12s;
}
.book-card:active { transform: scale(.97); }
.book-card img { width: 100%; aspect-ratio: 3/4; object-fit: cover; background: var(--paper-soft); display: block; }
.book-card .bc-body { padding: 10px 12px 12px; }
.book-card .bc-title { font-weight: 600; font-size: .88rem; line-height: 1.3; }
.book-card .bc-meta { font-size: .75rem; color: var(--ink-soft); margin-top: 4px; }
.lib-footer { text-align: center; padding: 24px; }
.quiet-link { background: none; border: none; color: var(--ink-soft); font-size: .8rem; cursor: pointer; }

/* ---------- Reader ---------- */
.reader-header {
  position: sticky; top: 0; z-index: 20; display: flex; align-items: center; gap: 10px;
  padding: 10px 12px; background: var(--paper); border-bottom: 1px solid var(--line);
}
.reader-head-text { flex: 1; min-width: 0; }
.reader-book-title { font-size: .78rem; color: var(--ink-soft); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.reader-chapter-title { font-family: Georgia, serif; font-weight: 700; font-size: 1.02rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.progress-track { height: 3px; background: var(--line); position: sticky; top: 67px; z-index: 20; }
.progress-fill { height: 100%; width: 0; background: var(--accent); transition: width .1s linear; }
.chapter-body {
  max-width: 680px; margin: 0 auto; width: 100%;
  padding: 26px 22px 120px; font-family: Georgia, "Times New Roman", serif;
  font-size: var(--read-size, 1.15rem); line-height: 1.75;
}
.chapter-body h2.ch-title { font-size: 1.35em; line-height: 1.3; margin: 6px 0 22px; }
.chapter-body p { margin: 0 0 1.05em; cursor: pointer; border-radius: 6px; padding: 2px 4px; margin-left: -4px; }
.chapter-body p:active { background: var(--paper-soft); }
.chapter-body p.hl-yellow { background: var(--hl-yellow); }
.chapter-body p.hl-green { background: var(--hl-green); }
.chapter-body p.hl-blue { background: var(--hl-blue); }
.chapter-body p.hl-pink { background: var(--hl-pink); }
.chapter-body p.subhead { font-weight: 700; font-size: 1.08em; margin: 1.4em 0 0.8em; line-height: 1.35; }
.para-flag { float: right; font-size: .8em; font-family: -apple-system, sans-serif; }
.toc-drawer {
  position: fixed; top: 0; right: 0; bottom: 0; width: min(340px, 88vw); z-index: 40;
  background: var(--card); border-left: 1px solid var(--line); display: flex; flex-direction: column;
  box-shadow: -8px 0 30px rgba(0,0,0,.15);
}
.toc-head { display: flex; align-items: center; justify-content: space-between; padding: 14px 16px; border-bottom: 1px solid var(--line); }
.toc-list { list-style: none; margin: 0; padding: 8px 0 40px; overflow-y: auto; }
.toc-list li button {
  display: block; width: 100%; text-align: left; background: none; border: none;
  padding: 10px 18px; font-size: .92rem; color: var(--ink); cursor: pointer; line-height: 1.35;
}
.toc-list li button.active { color: var(--accent); font-weight: 700; }
.toc-list li button:active { background: var(--paper-soft); }
.chapter-nav {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 20;
  display: flex; align-items: center; justify-content: space-between; gap: 6px;
  padding: 10px 12px calc(10px + env(safe-area-inset-bottom));
  background: var(--paper); border-top: 1px solid var(--line);
}
.nav-btn {
  border: 1px solid var(--line); background: var(--card); color: var(--ink);
  border-radius: 999px; padding: 10px 16px; font-size: .9rem; cursor: pointer;
}
.nav-btn:disabled { opacity: .35; }

/* ---------- Action sheet ---------- */
.sheet-backdrop { position: fixed; inset: 0; background: rgba(0,0,0,.45); z-index: 50; }
.sheet {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 51;
  background: var(--card); border-top: 1px solid var(--line);
  border-radius: 18px 18px 0 0; padding: 10px 18px calc(20px + env(safe-area-inset-bottom));
  max-height: 70dvh; overflow-y: auto;
}
.sheet-handle { width: 44px; height: 5px; border-radius: 3px; background: var(--line); margin: 4px auto 12px; }
.sheet-preview { font-size: .85rem; color: var(--ink-soft); font-style: italic; margin: 0 0 12px;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.sheet-actions { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.sheet-btn {
  border: 1px solid var(--line); background: var(--paper); color: var(--ink);
  border-radius: 12px; padding: 12px 6px; font-size: 1.3rem; cursor: pointer;
  display: flex; flex-direction: column; align-items: center; gap: 4px;
}
.sheet-btn span { font-size: .72rem; }
.sheet-btn.warn { border-color: #c98; }
.hl-colors { display: flex; gap: 12px; justify-content: center; margin-top: 14px; }
.hl-dot { width: 40px; height: 40px; border-radius: 50%; border: 2px solid var(--line); cursor: pointer; font-size: 1.1rem; }
.note-box { margin-top: 14px; }
.note-box textarea {
  width: 100%; border: 1px solid var(--line); border-radius: 10px; padding: 10px;
  font-size: .95rem; background: var(--paper); color: var(--ink); font-family: inherit;
}
.note-row { display: flex; gap: 10px; margin-top: 10px; }
.btn-primary { background: var(--accent); color: #fff; border: none; border-radius: 999px; padding: 10px 22px; font-size: .95rem; cursor: pointer; }
.btn-quiet { background: none; border: none; color: var(--ink-soft); font-size: .95rem; cursor: pointer; }
.toast {
  position: fixed; bottom: 90px; left: 50%; transform: translateX(-50%); z-index: 60;
  background: var(--ink); color: var(--paper); padding: 10px 20px; border-radius: 999px;
  font-size: .9rem; white-space: nowrap;
}

/* ---------- Marks ---------- */
.marks-list { max-width: 680px; margin: 0 auto; width: 100%; padding: 10px 20px 60px; }
.mark-item { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 12px 14px; margin-bottom: 10px; cursor: pointer; }
.mark-item .mk-book { font-size: .75rem; color: var(--ink-soft); }
.mark-item .mk-text { font-family: Georgia, serif; font-size: .95rem; margin-top: 4px;
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }

/* ---------- Admin ---------- */
.admin-wrap { max-width: 760px; margin: 0 auto; padding: 30px 20px 60px; width: 100%; }
.admin-wrap h1 { font-family: Georgia, serif; }
.admin-login input {
  width: 100%; padding: 12px 14px; font-size: 1rem; border-radius: 10px;
  border: 1px solid var(--line); background: var(--card); color: var(--ink); margin-bottom: 10px;
}
.typo-item { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 14px; margin-bottom: 12px; }
.typo-item .tp-meta { font-size: .78rem; color: var(--ink-soft); margin-bottom: 6px; }
.typo-item .tp-para { font-family: Georgia, serif; font-size: .92rem; background: var(--paper-soft); border-radius: 8px; padding: 8px 10px; margin: 6px 0; }
.typo-item .tp-comment { font-size: .9rem; }
.typo-item .tp-row { display: flex; gap: 8px; margin-top: 10px; }
.btn-danger { background: none; border: 1px solid #c66; color: #c66; border-radius: 999px; padding: 8px 18px; cursor: pointer; }