/* ── カタカムナウタヒ 原文アーカイブ styles.css ── */
:root {
  --ink: #eef0f8;
  --ink-soft: #bcc3e0;
  --muted: #8890b0;
  --night: #0c0e18;
  --deep: #121630;
  --navy: #1a2050;
  --navy-2: #2a3470;
  --indigo: #4a5aaa;
  --gold: #c8a86a;
  --amber: #a88840;
  --line: rgba(238, 240, 248, 0.12);
  --line-strong: rgba(200, 168, 106, 0.30);
  --shadow: 0 18px 60px rgba(0,0,0,.40);
  --radius: 8px;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100dvh;
  font-family: "Yu Gothic", "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
  background: linear-gradient(180deg, #0c0e18 0%, #0e0f1c 50%, #0a0c14 100%);
  color: var(--ink);
  line-height: 1.7;
  overflow-x: hidden;
}

a { color: var(--gold); text-decoration: none; }
a:hover { text-decoration: underline; }
button, input { font: inherit; }
button { cursor: pointer; }

/* ── Header ── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 0 clamp(14px, 4vw, 48px);
  height: 56px;
  background: rgba(12, 14, 24, 0.88);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--line);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-decoration: none;
}
.brand:hover { text-decoration: none; color: var(--gold); }

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: rgba(200, 168, 106, 0.15);
  border: 1px solid var(--line-strong);
  font-size: 10px;
  font-weight: 800;
  color: var(--gold);
  letter-spacing: 0;
  flex-shrink: 0;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}
.site-nav a {
  color: var(--muted);
  font-size: 13px;
  padding: 6px 10px;
  border-radius: var(--radius);
  text-decoration: none;
  transition: background 0.15s, color 0.15s;
}
.site-nav a:hover { background: rgba(200, 168, 106, 0.10); color: var(--ink); }
.site-nav .nav-back { color: var(--gold); }
.site-nav .nav-visual {
  color: var(--gold-bright, #e0c080);
  border: 1px solid rgba(200,168,106,0.5);
  border-radius: 5px;
  padding: 0.15rem 0.65rem;
  font-weight: 600;
}
.site-nav .nav-visual:hover { background: rgba(200,168,106,0.15); }

/* ── Hero ── */
.hero {
  position: relative;
  min-height: 420px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: clamp(80px,10vw,140px) clamp(18px,5vw,80px) 60px;
  background:
    linear-gradient(135deg, rgba(200,168,106,0.08) 0%, transparent 60%),
    linear-gradient(180deg, transparent 40%, rgba(12,14,24,0.9) 100%),
    radial-gradient(ellipse 80% 60% at 20% 40%, rgba(80,60,20,0.18) 0%, transparent 70%),
    #0c0e18;
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(0deg, transparent, transparent 39px, rgba(200,168,106,0.04) 40px),
    repeating-linear-gradient(90deg, transparent, transparent 39px, rgba(200,168,106,0.04) 40px);
  pointer-events: none;
}

.hero-content {
  position: relative;
  max-width: 600px;
}

.eyebrow {
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold);
  margin: 0 0 12px;
}

.hero h1 {
  font-size: clamp(30px, 5vw, 52px);
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin: 0 0 16px;
  color: var(--ink);
}

.hero-copy {
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.8;
  max-width: 480px;
  margin: 0 0 24px;
}

.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }

.button {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 22px;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: opacity 0.15s, transform 0.15s;
}
.button:hover { opacity: 0.85; transform: translateY(-1px); text-decoration: none; }
.button-primary {
  background: var(--gold);
  color: #0c0e18;
}
.button-ghost {
  background: rgba(200, 168, 106, 0.12);
  color: var(--gold);
  border: 1px solid var(--line-strong);
}

.hero-stats {
  position: absolute;
  right: clamp(18px, 5vw, 80px);
  bottom: 60px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  min-width: 260px;
}
.hero-stats div {
  background: rgba(12, 14, 24, 0.86);
  padding: 16px 18px;
  text-align: center;
}
.hero-stats dt {
  font-size: 2rem;
  font-weight: 800;
  color: var(--gold);
  line-height: 1;
  margin-bottom: 4px;
}
.hero-stats dd {
  font-size: 0.78rem;
  color: var(--muted);
  margin: 0;
}

/* ── Section ── */
.section {
  padding: 64px clamp(18px, 5vw, 80px);
}
.section-inner { max-width: 1100px; margin: 0 auto; }

.section-heading {
  margin-bottom: 40px;
}
.section-heading.compact { margin-bottom: 28px; }
.section-heading h2 {
  font-size: clamp(22px, 3vw, 30px);
  letter-spacing: -0.02em;
  margin: 8px 0 12px;
  color: var(--ink);
}
.section-heading p { color: var(--ink-soft); font-size: 14px; margin: 0; }

/* ── About Grid ── */
.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
}
.info-panel {
  background: rgba(200, 168, 106, 0.04);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 20px;
}
.info-panel h3 {
  font-size: 14px;
  color: var(--gold);
  margin: 0 0 8px;
}
.info-panel p { margin: 0; font-size: 13px; color: var(--ink-soft); line-height: 1.7; }
.info-panel a { color: var(--gold); }

/* ── Badge ── */
.badge-verified {
  display: inline-flex;
  align-items: center;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.08em;
  padding: 2px 7px;
  border-radius: 999px;
  background: rgba(100, 180, 120, 0.18);
  color: #70c880;
  border: 1px solid rgba(100, 180, 120, 0.35);
}
.badge-inferred {
  display: inline-flex;
  align-items: center;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.08em;
  padding: 2px 7px;
  border-radius: 999px;
  background: rgba(200, 168, 106, 0.12);
  color: var(--gold);
  border: 1px solid var(--line-strong);
}

/* ── Archive Section ── */
.archive-section { background: rgba(14, 15, 28, 0.6); }

.archive-toolbar {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.search-field {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 8px;
  background: rgba(238, 240, 248, 0.06);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0 14px;
  min-width: 220px;
  font-size: 13px;
  color: var(--muted);
}
.search-field input {
  background: none;
  border: none;
  outline: none;
  color: var(--ink);
  padding: 10px 0;
  font-size: 13px;
}
.search-field input::placeholder { color: var(--muted); }

.segmented {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}
.segment {
  background: rgba(238, 240, 248, 0.05);
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  padding: 5px 14px;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.segment:hover { background: rgba(200, 168, 106, 0.08); color: var(--ink); }
.segment.active {
  background: rgba(200, 168, 106, 0.16);
  border-color: var(--line-strong);
  color: var(--gold);
}

.archive-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 24px;
  align-items: start;
}

/* ── Volume List (left) ── */
.volume-list-wrap {
  position: sticky;
  top: 72px;
  max-height: calc(100dvh - 100px);
  overflow-y: auto;
  padding-right: 6px;
  scrollbar-width: thin;
  scrollbar-color: var(--line) transparent;
}

.volume-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
}

.volume-card {
  background: rgba(238, 240, 248, 0.04);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 10px 12px;
  text-align: left;
  color: var(--ink-soft);
  font-size: 12px;
  transition: background 0.12s, border-color 0.12s;
}
.volume-card:hover {
  background: rgba(200, 168, 106, 0.08);
  border-color: var(--line-strong);
}
.volume-card.active {
  background: rgba(200, 168, 106, 0.14);
  border-color: var(--gold);
  color: var(--ink);
}
.volume-card-top {
  display: flex;
  justify-content: space-between;
  font-size: 10px;
  color: var(--muted);
  margin-bottom: 4px;
}
.volume-card strong {
  display: block;
  font-size: 13px;
  color: var(--ink);
  font-family: "Yu Mincho", "Hiragino Mincho ProN", serif;
  line-height: 1.4;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
}

/* ── Passage Panel (right) ── */
.passage-panel {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) * 1.5);
  overflow: hidden;
  background: rgba(14, 15, 28, 0.7);
}

.selected-volume {
  padding: 24px 28px 16px;
  border-bottom: 1px solid var(--line);
}
.selected-volume h3 {
  font-size: 18px;
  margin: 4px 0 6px;
  color: var(--ink);
}
.selected-volume p { margin: 0; font-size: 13px; color: var(--ink-soft); }

.passage-tools {
  padding: 10px 28px;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  gap: 10px;
}
.count-label { font-size: 12px; color: var(--muted); }

.passage-list {
  padding: 16px;
  display: grid;
  gap: 14px;
  max-height: calc(100dvh - 260px);
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--line) transparent;
}

/* ── Song Card ── */
.song-card {
  background: rgba(238, 240, 248, 0.04);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0;
  overflow: hidden;
}

.song-card-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 18px 12px;
  border-bottom: 1px solid var(--line);
}

.song-label {
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.1em;
  color: var(--gold);
  margin: 0 0 4px;
}

.song-badge-row {
  display: flex;
  gap: 6px;
  align-items: center;
  flex-wrap: wrap;
}

.song-number {
  font-size: 2rem;
  font-weight: 800;
  color: rgba(200, 168, 106, 0.25);
  line-height: 1;
  flex-shrink: 0;
}

.song-body { padding: 16px 18px; }

.utahi-text {
  margin: 0 0 10px;
  font-family: "Yu Mincho", "Hiragino Mincho ProN", serif;
  font-size: 1.05rem;
  line-height: 1.85;
  color: var(--ink);
  letter-spacing: 0.06em;
  border-left: 3px solid rgba(200, 168, 106, 0.4);
  padding-left: 14px;
}

.song-summary {
  margin: 10px 0 0;
  font-size: 0.88rem;
  color: var(--ink-soft);
  line-height: 1.7;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 10px;
}
.tag-row span {
  font-size: 11px;
  padding: 3px 8px;
  border-radius: 999px;
  background: rgba(200, 168, 106, 0.10);
  color: var(--gold);
  border: 1px solid var(--line-strong);
}

/* ── Accordion ── */
.accordion-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 12px 0 0;
  padding: 6px 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--gold);
  background: rgba(200, 168, 106, 0.06);
  font-size: 0.84rem;
  font-weight: 700;
  cursor: pointer;
  width: fit-content;
  transition: background 0.15s;
}
.accordion-toggle:hover { background: rgba(200, 168, 106, 0.12); }
.accordion-toggle[aria-expanded="true"] .toggle-icon { transform: rotate(180deg); }
.toggle-icon { transition: transform 0.2s; }
.accordion-body { overflow: hidden; }
.accordion-body[hidden] { display: none; }
.interpretation-text {
  margin: 12px 0 0;
  color: var(--ink-soft);
  font-size: 0.88rem;
  line-height: 1.8;
  padding: 12px 14px;
  background: rgba(200, 168, 106, 0.04);
  border-radius: var(--radius);
  border-left: 2px solid rgba(200, 168, 106, 0.3);
}

/* ── Footer ── */
.site-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-start;
  gap: 20px;
  padding: 32px clamp(18px, 4vw, 56px);
  border-top: 1px solid var(--line);
  background: #090b14;
  color: var(--ink-soft);
  font-size: 13px;
}
.site-footer strong { color: var(--ink); }
.site-footer p { margin: 6px 0 0; }
.footer-links { display: flex; flex-wrap: wrap; gap: 12px; }
.footer-links a { color: var(--gold); text-decoration: none; }
.footer-links a:hover { text-decoration: underline; }

/* ── Responsive ── */
@media (max-width: 960px) {
  .archive-layout { grid-template-columns: 1fr; }
  .volume-list-wrap { position: relative; top: auto; max-height: none; }
  .volume-list { grid-template-columns: repeat(3, 1fr); }
  .hero-stats { position: static; margin-top: 36px; }
}

@media (max-width: 640px) {
  .section { padding-inline: 14px; }
  .site-header { padding-inline: 14px; }
  .hero { padding: 72px 18px 40px; }
  .about-grid { grid-template-columns: 1fr; }
  .volume-list { grid-template-columns: repeat(2, 1fr); }
  .passage-list { padding: 10px; }
  .song-card-head { flex-direction: column; }
  .hero-stats { grid-template-columns: repeat(3, 1fr); }
}