:root {
  --paper: #f5f0e6;
  --paper-2: #ebe2d2;
  --ink: #1d211d;
  --muted: #686b62;
  --rule: #cfc3b1;
  --accent: #7a3427;
  --accent-soft: #e8d2c9;
  --panel: rgba(255,255,255,.45);
  --shadow: 0 16px 40px rgba(44,37,27,.09);
  --serif: Georgia, 'Times New Roman', serif;
  --sans: ui-sans-serif, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

[data-theme="dark"] {
  --paper: #171a17;
  --paper-2: #22261f;
  --ink: #ece8de;
  --muted: #aaa99f;
  --rule: #3b4138;
  --accent: #d58a72;
  --accent-soft: #3b2b27;
  --panel: rgba(255,255,255,.035);
  --shadow: 0 18px 50px rgba(0,0,0,.24);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: var(--sans); }
button, input, textarea { font: inherit; }
button { color: inherit; }
.skip-link { position: fixed; top: -60px; left: 12px; background: var(--ink); color: var(--paper); padding: 10px 14px; z-index: 99; }
.skip-link:focus { top: 12px; }
.sr-only { position:absolute; width:1px; height:1px; padding:0; margin:-1px; overflow:hidden; clip:rect(0,0,0,0); white-space:nowrap; border:0; }

.topbar { height: 72px; border-bottom: 1px solid var(--rule); display: flex; align-items: center; justify-content: space-between; padding: 0 24px; position: sticky; top: 0; background: color-mix(in srgb, var(--paper) 92%, transparent); backdrop-filter: blur(14px); z-index: 20; }
.brand { display: flex; flex-direction: column; line-height: 1.1; }
.brand strong { font-family: var(--serif); font-size: 1.15rem; }
.author-credit { margin-top: 3px; color: var(--muted); font-family: var(--serif); font-style: italic; font-size: .76rem; }
.eyebrow { text-transform: uppercase; letter-spacing: .14em; font-size: .67rem; font-weight: 750; color: var(--accent); }
.icon-button { border: 1px solid var(--rule); background: transparent; border-radius: 999px; width: 42px; height: 42px; cursor: pointer; }
.icon-button:hover, .icon-button:focus-visible { border-color: var(--accent); background: var(--accent-soft); }
.menu-button { display: none; }

.app-shell { display: grid; grid-template-columns: 330px minmax(0,1fr); min-height: calc(100vh - 72px); }
.sidebar { border-right: 1px solid var(--rule); background: var(--paper-2); }
.sidebar-inner { position: sticky; top: 72px; height: calc(100vh - 72px); overflow: auto; padding: 20px 16px 48px; }
.search-wrap { position: relative; display: block; }
.search-wrap input { width: 100%; border: 1px solid var(--rule); background: var(--paper); color: var(--ink); border-radius: 12px; padding: 13px 58px 13px 14px; outline: none; }
.search-wrap input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
kbd { position: absolute; right: 10px; top: 10px; border: 1px solid var(--rule); border-radius: 6px; padding: 3px 6px; color: var(--muted); font-size: .72rem; }
.filter-row { display: grid; grid-template-columns: repeat(4,1fr); gap: 6px; margin: 14px 0; }
.filter { padding: 8px; border: 1px solid var(--rule); border-radius: 8px; background: transparent; cursor: pointer; }
.filter.active { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.utility-links { display: flex; justify-content: space-between; gap: 8px; border-bottom: 1px solid var(--rule); padding-bottom: 14px; }
.text-button { border: 0; padding: 4px 0; background: transparent; color: var(--muted); cursor: pointer; text-align: left; }
.text-button:hover { color: var(--accent); }
.result-count { font-size: .74rem; color: var(--muted); margin: 14px 4px 8px; }
.chapter-list { display: grid; gap: 18px; }
.part-list-group { display: grid; gap: 5px; }
.part-list-heading { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; padding: 5px 4px 8px; border-bottom: 1px solid var(--rule); }
.part-list-heading strong { font-family: var(--serif); font-size: .82rem; font-weight: 600; line-height: 1.25; }
.part-list-heading span { flex: 0 0 auto; color: var(--muted); font-size: .7rem; white-space: nowrap; }
.chapter-link { width: 100%; text-align: left; border: 0; background: transparent; border-radius: 9px; padding: 10px; cursor: pointer; display: grid; grid-template-columns: 34px 1fr; gap: 8px; }
.chapter-link:hover, .chapter-link.active { background: var(--panel); box-shadow: inset 3px 0 var(--accent); }
.chapter-number { color: var(--accent); font-family: var(--serif); font-size: .92rem; }
.chapter-link strong { font-family: var(--serif); font-size: .94rem; font-weight: 600; display: block; }

.match-snippet { font-size: .75rem; color: var(--muted); line-height: 1.35; margin-top: 5px; }
mark { background: var(--accent-soft); color: inherit; }

.main-content { min-width: 0; }
.home-view, .chapter-view { max-width: 1040px; margin: 0 auto; padding: 64px 48px 100px; }
.hero { max-width: 770px; padding: 60px 0 54px; }
.hero h1 { font-family: var(--serif); font-size: clamp(2.6rem, 6vw, 5.5rem); font-weight: 500; line-height: .98; letter-spacing: -.045em; margin: 14px 0 24px; }
.hero p { font-family: var(--serif); font-size: 1.25rem; line-height: 1.65; color: var(--muted); max-width: 680px; }
.hero-actions { display: flex; gap: 12px; margin-top: 32px; }
.primary-button, .secondary-button { border-radius: 999px; padding: 13px 20px; cursor: pointer; }
.primary-button { background: var(--ink); color: var(--paper); border: 1px solid var(--ink); }
.secondary-button { background: transparent; color: var(--ink); border: 1px solid var(--rule); }
.dashboard-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 14px; }
.dashboard-card { background: var(--panel); border: 1px solid var(--rule); border-radius: 18px; padding: 22px; min-height: 160px; box-shadow: var(--shadow); }
.card-label { color: var(--accent); font-size: .69rem; text-transform: uppercase; letter-spacing: .14em; font-weight: 750; }
.dashboard-card h2 { font-family: var(--serif); font-weight: 500; margin: 22px 0 8px; }
.dashboard-card p { color: var(--muted); line-height: 1.5; margin: 0; }
.part-cards { display: grid; grid-template-columns: repeat(3,1fr); gap: 14px; margin-top: 32px; }
.part-card { border: 1px solid var(--rule); border-radius: 16px; background: transparent; padding: 22px; text-align: left; cursor: pointer; }
.part-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.part-card span, .part-card small { display: block; color: var(--muted); }
.part-card strong { display: block; font-family: var(--serif); font-size: 1.15rem; margin: 12px 0 20px; }

.hidden { display: none !important; }
.chapter-toolbar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 50px; }
.chapter-actions { display: flex; gap: 8px; }
.chapter-header { max-width: 820px; margin-bottom: 56px; }
.chapter-kicker { color: var(--accent); text-transform: uppercase; letter-spacing: .13em; font-size: .72rem; font-weight: 750; }
.chapter-header h1 { font-family: var(--serif); font-size: clamp(2.5rem, 5vw, 4.8rem); line-height: 1.03; font-weight: 500; letter-spacing: -.035em; margin: 14px 0 14px; }
.chapter-setting { font-family: var(--serif); color: var(--muted); font-size: 1.1rem; }
.tag-row { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 20px; }
.tag { border: 1px solid var(--rule); border-radius: 999px; padding: 6px 10px; font-size: .74rem; color: var(--muted); }
.reading-layout { display: grid; grid-template-columns: 175px minmax(0, 680px); gap: 48px; align-items: start; }
.toc { position: sticky; top: 100px; display: grid; gap: 10px; border-left: 1px solid var(--rule); padding-left: 18px; }
.toc span { text-transform: uppercase; letter-spacing: .13em; font-size: .67rem; color: var(--muted); margin-bottom: 4px; }
.toc a { color: var(--muted); text-decoration: none; font-size: .86rem; }
.toc a:hover { color: var(--accent); }
.chapter-body section { scroll-margin-top: 100px; margin-bottom: 54px; }
.chapter-body h2 { font-family: var(--serif); font-weight: 500; font-size: 1.65rem; }
.chapter-body p { font-family: var(--serif); line-height: 1.82; font-size: 1.14rem; color: color-mix(in srgb, var(--ink) 91%, var(--muted)); }
.matters-box { border-left: 4px solid var(--accent); background: var(--panel); border-radius: 0 14px 14px 0; padding: 22px 26px; }
.matters-box h2 { margin-top: 0; }
.notes-section { border-top: 1px solid var(--rule); padding-top: 26px; }
.notes-heading { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; }
.notes-heading span { color: var(--muted); font-size: .75rem; }
.notes-section textarea { width: 100%; resize: vertical; border: 1px solid var(--rule); background: var(--panel); color: var(--ink); border-radius: 12px; padding: 15px; line-height: 1.55; outline: none; }
.notes-section textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.save-status { min-height: 20px; color: var(--muted); font-family: var(--sans) !important; font-size: .78rem !important; }
.chapter-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 80px; border-top: 1px solid var(--rule); padding-top: 28px; }
.nav-card { border: 1px solid var(--rule); background: transparent; border-radius: 14px; padding: 18px; cursor: pointer; text-align: left; min-height: 92px; }
.nav-card:last-child { text-align: right; }
.nav-card:hover { border-color: var(--accent); }
.nav-card small { color: var(--muted); display: block; margin-bottom: 8px; }
.nav-card strong { font-family: var(--serif); font-weight: 500; }
.toast { position: fixed; left: 50%; bottom: 24px; transform: translate(-50%, 20px); opacity: 0; pointer-events: none; background: var(--ink); color: var(--paper); padding: 10px 16px; border-radius: 999px; transition: .2s; z-index: 50; }
.toast.show { opacity: 1; transform: translate(-50%,0); }

@media (max-width: 900px) {
  .app-shell { grid-template-columns: 280px minmax(0,1fr); }
  .home-view, .chapter-view { padding-left: 30px; padding-right: 30px; }
  .dashboard-grid { grid-template-columns: 1fr; }
  .part-cards { grid-template-columns: 1fr; }
  .reading-layout { grid-template-columns: 1fr; }
  .toc { position: static; display: flex; flex-wrap: wrap; border-left: 0; border-bottom: 1px solid var(--rule); padding: 0 0 16px; }
  .toc span { width: 100%; }
}

@media (max-width: 700px) {
  .topbar { height: 62px; padding: 0 14px; }
  .menu-button { display: inline-block; }
  .app-shell { display: block; }
  .sidebar { position: fixed; z-index: 30; inset: 62px auto 0 0; width: min(88vw, 340px); transform: translateX(-105%); transition: transform .22s ease; box-shadow: 15px 0 50px rgba(0,0,0,.2); }
  .sidebar.open { transform: translateX(0); }
  .sidebar-inner { top: 0; height: calc(100vh - 62px); }
  .home-view, .chapter-view { padding: 32px 20px 72px; }
  .hero { padding: 35px 0 34px; }
  .hero h1 { font-size: 3rem; }
  .hero p { font-size: 1.08rem; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .dashboard-grid { gap: 10px; }
  .chapter-toolbar { margin-bottom: 34px; }
  .chapter-header { margin-bottom: 38px; }
  .chapter-header h1 { font-size: 2.7rem; }
  .chapter-body p { font-size: 1.08rem; }
  .chapter-nav { grid-template-columns: 1fr; }
  .nav-card:last-child { text-align: left; }
  .notes-heading { display: block; }
}

.chapter-body p { white-space: pre-line; }

.build-footer{padding:10px 16px;text-align:center;font-size:.72rem;letter-spacing:.06em;opacity:.62;border-top:1px solid var(--line,rgba(127,127,127,.25));}