:root {
  --bg: #faf8f5;
  --surface: #ffffff;
  --border: #e5e0d8;
  --text: #24211c;
  --text-dim: #6b6459;
  --accent: #8a4b3b;
  --accent-soft: #f3e6de;
  --mark-bg: #ffe9a8;
  --shadow: 0 1px 2px rgba(0,0,0,0.04), 0 4px 12px rgba(0,0,0,0.03);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #171512;
    --surface: #211e1a;
    --border: #3a352c;
    --text: #ece7de;
    --text-dim: #a39c8e;
    --accent: #e0a98c;
    --accent-soft: #362a24;
    --mark-bg: #6b5620;
    --shadow: 0 1px 2px rgba(0,0,0,0.3), 0 4px 16px rgba(0,0,0,0.25);
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: 'Heebo', -apple-system, 'Segoe UI', system-ui, sans-serif;
  line-height: 1.6;
}

.wrap {
  max-width: 780px;
  margin: 0 auto;
  padding-inline: 20px;
}

.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding-block: 28px 22px;
}

.lang-switch {
  display: flex;
  gap: 6px;
  margin-bottom: 14px;
}

.lang-switch button {
  font: inherit;
  font-size: 0.82rem;
  padding: 5px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text-dim);
  cursor: pointer;
}

.lang-switch button[aria-pressed="true"] {
  background: var(--accent-soft);
  color: var(--accent);
  border-color: var(--accent-soft);
  font-weight: 500;
}

.site-header h1 {
  margin: 0 0 6px;
  font-size: clamp(1.4rem, 4vw, 1.9rem);
  font-weight: 700;
}

.subtitle {
  margin: 0 0 18px;
  color: var(--text-dim);
  font-size: 0.95rem;
}

.search-box {
  position: relative;
}

#search {
  width: 100%;
  font: inherit;
  font-size: 1rem;
  padding: 12px 16px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
}

#search:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

.search-count {
  display: block;
  margin-top: 8px;
  font-size: 0.85rem;
  color: var(--text-dim);
}

.toc {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 5;
  box-shadow: var(--shadow);
}

.toc-inner {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  padding-block: 10px;
  scrollbar-width: thin;
}

.toc-inner a {
  flex: none;
  white-space: nowrap;
  font-size: 0.85rem;
  padding: 7px 13px;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--text-dim);
  text-decoration: none;
  background: var(--bg);
}

.toc-inner a:hover { color: var(--text); }

main { padding-block: 28px 60px; }

.day-block {
  margin-bottom: 40px;
}

.day-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--accent);
  margin: 0 0 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--accent-soft);
  scroll-margin-top: 64px;
}

.chapter-block {
  margin-bottom: 26px;
}

.chapter-title {
  font-size: 1rem;
  font-weight: 500;
  margin: 0 0 10px;
  scroll-margin-top: 64px;
  display: flex;
  align-items: baseline;
  gap: 8px;
  flex-wrap: wrap;
}

.chapter-title .ref-count {
  font-size: 0.8rem;
  font-weight: 400;
  color: var(--text-dim);
}

.ref-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.ref-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 14px;
  font-size: 0.92rem;
  color: var(--text);
  direction: ltr;
  text-align: left;
  unicode-bidi: plaintext;
}

.ref-item + .ref-item { margin-top: 6px; }

.ref-item mark {
  background: var(--mark-bg);
  color: inherit;
  border-radius: 3px;
  padding: 0 1px;
}

.no-results {
  color: var(--text-dim);
  text-align: center;
  padding: 40px 0;
  display: none;
}

.site-footer {
  border-top: 1px solid var(--border);
  padding-block: 20px;
  color: var(--text-dim);
  font-size: 0.85rem;
}

@media (max-width: 480px) {
  .wrap { padding-inline: 14px; }
  .ref-item { font-size: 0.87rem; padding: 10px 12px; }
}