@import url('https://fonts.googleapis.com/css2?family=Shippori+Mincho+B1:wght@600;700&family=Shippori+Mincho:wght@400;500&family=Zen+Maru+Gothic:wght@400;500&display=swap');

:root {
  --bg-base:     #1a1a1a;
  --bg-content:  #1e2530;
  --bg-post:     #232d3a;
  --bg-hover:    #2a3647;

  --text-primary:   #d4c5a0;
  --text-secondary: #9a8e78;
  --text-dim:       #6b6358;

  --accent-gold:  #c4956a;
  --accent-warm:  #a07850;
  --link:         #7db4c9;
  --link-hover:   #c4956a;

  --border:      #2e3a4a;
  --border-faint: #262f3b;
  --shadow:      rgba(0, 0, 0, 0.4);

  /* カテゴリ色 */
  --cat-touhou:  #8e6b3e;
  --cat-shinto:  #c4956a;
  --cat-kiki:    #6b4c8a;
  --cat-youkai:  #3d6b4f;
  --cat-minzoku: #a0522d;
  --cat-bukkyou: #b8860b;
  --cat-hikaku:  #4a6fa5;
  --cat-western: #7b5ea7;
  --cat-asian:   #2e8b57;
  --cat-meta:    #6b717e;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg-base);
  color: var(--text-primary);
  font-family: 'Shippori Mincho', 'Hiragino Mincho ProN', 'Yu Mincho', serif;
  font-size: 15.5px;
  line-height: 1.85;
  letter-spacing: 0.02em;
  font-feature-settings: "palt";
  min-height: 100vh;
  /* 灯火グロー */
  background-image: radial-gradient(ellipse at 50% 40%, rgba(196, 149, 106, 0.04) 0%, transparent 70%);
}

/* ノイズテクスチャ */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.025;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='200' height='200' filter='url(%23n)'/%3E%3C/svg%3E");
  z-index: 9999;
}

/* コンテナ */
.container {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ヘッダ */
.site-header {
  background: var(--bg-content);
  border-bottom: 1px solid var(--border);
  padding: 16px 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-header .container {
  display: flex;
  align-items: center;
  gap: 16px;
}

.site-title {
  font-family: 'Shippori Mincho B1', serif;
  font-size: 18px;
  font-weight: 700;
  color: var(--accent-gold);
  text-decoration: none;
  letter-spacing: 0.05em;
}

.site-nav {
  font-family: 'Zen Maru Gothic', sans-serif;
  font-size: 13px;
  color: var(--text-secondary);
}

.site-nav a {
  color: var(--link);
  text-decoration: none;
}

.site-nav a:hover {
  color: var(--link-hover);
}

.breadcrumb {
  font-family: 'Zen Maru Gothic', sans-serif;
  font-size: 13px;
  color: var(--text-dim);
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.breadcrumb a {
  color: var(--link);
  text-decoration: none;
}

.breadcrumb a:hover {
  color: var(--link-hover);
}

.breadcrumb .sep {
  color: var(--text-dim);
}

/* メインコンテンツ */
main {
  padding: 32px 0 64px;
  animation: fadeInUp 0.3s ease-out;
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ページタイトル */
.page-title {
  font-family: 'Shippori Mincho B1', serif;
  font-size: 26px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
  line-height: 1.4;
}

.page-subtitle {
  font-family: 'Zen Maru Gothic', sans-serif;
  font-size: 13px;
  color: var(--text-dim);
  margin-bottom: 24px;
}

/* カテゴリバッジ */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 10px 2px 8px;
  border-radius: 20px;
  font-family: 'Zen Maru Gothic', sans-serif;
  font-size: 12px;
  background: rgba(255,255,255,0.06);
  border-left: 3px solid var(--cat-meta);
  color: var(--text-secondary);
  line-height: 1.6;
  white-space: nowrap;
}

.badge.cat-touhou  { border-color: var(--cat-touhou); }
.badge.cat-shinto  { border-color: var(--cat-shinto); }
.badge.cat-kiki    { border-color: var(--cat-kiki); }
.badge.cat-youkai  { border-color: var(--cat-youkai); }
.badge.cat-minzoku { border-color: var(--cat-minzoku); }
.badge.cat-bukkyou { border-color: var(--cat-bukkyou); }
.badge.cat-hikaku  { border-color: var(--cat-hikaku); }
.badge.cat-western { border-color: var(--cat-western); }
.badge.cat-asian   { border-color: var(--cat-asian); }
.badge.cat-meta    { border-color: var(--cat-meta); }

.badge-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}

/* summaryテキスト */
.summary {
  font-size: 14.5px;
  color: var(--text-secondary);
  margin-bottom: 24px;
  padding: 12px 16px;
  background: rgba(255,255,255,0.03);
  border-left: 2px solid var(--accent-warm);
  border-radius: 0 4px 4px 0;
}

/* セグメント区切り */
.segment-divider {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 28px 0 16px;
  color: var(--accent-gold);
  font-family: 'Zen Maru Gothic', sans-serif;
  font-size: 12px;
  letter-spacing: 0.05em;
}

.segment-divider::before,
.segment-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

.segment-divider .label {
  color: var(--accent-gold);
  padding: 0 4px;
  white-space: nowrap;
}

/* レスカード */
.post {
  background: var(--bg-post);
  border-left: 2px solid var(--cat-meta);
  border-radius: 0 4px 4px 0;
  margin-bottom: 10px;
  padding: 12px 16px;
  transition: background 0.2s ease;
  position: relative;
}

.post:hover {
  background: var(--bg-hover);
}

/* カテゴリ色ボーダー */
.post.cat-touhou  { border-color: var(--cat-touhou); }
.post.cat-shinto  { border-color: var(--cat-shinto); }
.post.cat-kiki    { border-color: var(--cat-kiki); }
.post.cat-youkai  { border-color: var(--cat-youkai); }
.post.cat-minzoku { border-color: var(--cat-minzoku); }
.post.cat-bukkyou { border-color: var(--cat-bukkyou); }
.post.cat-hikaku  { border-color: var(--cat-hikaku); }
.post.cat-western { border-color: var(--cat-western); }
.post.cat-asian   { border-color: var(--cat-asian); }
.post.cat-meta    { border-color: var(--cat-meta); }

.post-header {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0 10px;
  margin-bottom: 8px;
  font-family: 'Zen Maru Gothic', sans-serif;
  font-size: 13px;
  color: var(--text-dim);
}

.post-num {
  color: var(--accent-gold);
  font-weight: 500;
  font-size: 14px;
  flex-shrink: 0;
}

.post-name {
  color: var(--text-secondary);
  flex-shrink: 0;
}

.post-datetime {
  color: var(--text-dim);
  font-size: 12px;
}

.post-id {
  color: var(--text-dim);
  font-size: 12px;
}

.post-thread-link {
  margin-left: auto;
  font-size: 11px;
  color: var(--text-dim);
  text-decoration: none;
  flex-shrink: 0;
}

.post-thread-link:hover {
  color: var(--link);
}

.post-body {
  font-family: 'Shippori Mincho', serif;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-primary);
  word-break: break-word;
  overflow-wrap: break-word;
}

.post-body a {
  color: var(--link);
  text-decoration: none;
}

.post-body a:hover {
  color: var(--link-hover);
  text-decoration: underline;
}

.post-body br {
  display: block;
  content: "";
}

/* トピックバッジ（スレッドページ用） */
.topic-badges {
  margin-top: 8px;
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.topic-badge {
  font-family: 'Zen Maru Gothic', sans-serif;
  font-size: 11px;
  padding: 1px 8px;
  border-radius: 12px;
  background: rgba(124, 180, 201, 0.1);
  border: 1px solid rgba(124, 180, 201, 0.3);
  color: var(--link);
  text-decoration: none;
  white-space: nowrap;
}

.topic-badge:hover {
  background: rgba(196, 149, 106, 0.15);
  border-color: rgba(196, 149, 106, 0.4);
  color: var(--accent-gold);
}

/* テーブル */
table {
  width: 100%;
  border-collapse: collapse;
  font-family: 'Zen Maru Gothic', sans-serif;
  font-size: 14px;
}

th {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  color: var(--text-dim);
  font-weight: 500;
  font-size: 12px;
  letter-spacing: 0.05em;
}

td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border-faint);
  color: var(--text-secondary);
}

tr:hover td {
  background: rgba(255,255,255,0.02);
}

td a {
  color: var(--link);
  text-decoration: none;
}

td a:hover {
  color: var(--link-hover);
}

/* カードリスト（カテゴリ・index用） */
.topic-card {
  background: var(--bg-post);
  border: 1px solid var(--border-faint);
  border-left: 3px solid var(--cat-meta);
  border-radius: 0 4px 4px 0;
  padding: 14px 16px;
  margin-bottom: 8px;
  transition: background 0.2s;
}

.topic-card:hover {
  background: var(--bg-hover);
}

.topic-card.cat-touhou  { border-left-color: var(--cat-touhou); }
.topic-card.cat-shinto  { border-left-color: var(--cat-shinto); }
.topic-card.cat-kiki    { border-left-color: var(--cat-kiki); }
.topic-card.cat-youkai  { border-left-color: var(--cat-youkai); }
.topic-card.cat-minzoku { border-left-color: var(--cat-minzoku); }
.topic-card.cat-bukkyou { border-left-color: var(--cat-bukkyou); }
.topic-card.cat-hikaku  { border-left-color: var(--cat-hikaku); }
.topic-card.cat-western { border-left-color: var(--cat-western); }
.topic-card.cat-asian   { border-left-color: var(--cat-asian); }
.topic-card.cat-meta    { border-left-color: var(--cat-meta); }

.topic-card-title {
  font-family: 'Shippori Mincho B1', serif;
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 6px;
}

.topic-card-title a {
  color: var(--text-primary);
  text-decoration: none;
}

.topic-card-title a:hover {
  color: var(--accent-gold);
}

.topic-card-meta {
  font-family: 'Zen Maru Gothic', sans-serif;
  font-size: 12px;
  color: var(--text-dim);
  margin-bottom: 6px;
}

.topic-card-summary {
  font-size: 13.5px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* index.html: 統計 */
.stats-bar {
  display: flex;
  gap: 24px;
  padding: 16px 20px;
  background: var(--bg-content);
  border: 1px solid var(--border);
  border-radius: 4px;
  margin-bottom: 32px;
  font-family: 'Zen Maru Gothic', sans-serif;
  flex-wrap: wrap;
}

.stat-item {
  text-align: center;
}

.stat-value {
  display: block;
  font-size: 22px;
  font-weight: 500;
  color: var(--accent-gold);
  font-family: 'Shippori Mincho B1', serif;
}

.stat-label {
  display: block;
  font-size: 11px;
  color: var(--text-dim);
  letter-spacing: 0.05em;
}

/* カテゴリツリー */
.cat-tree {
  margin-bottom: 40px;
}

.cat-tree h2 {
  font-family: 'Shippori Mincho B1', serif;
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}

details.major-cat {
  margin-bottom: 8px;
}

details.major-cat summary {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: var(--bg-content);
  border: 1px solid var(--border);
  border-radius: 4px;
  cursor: pointer;
  font-family: 'Zen Maru Gothic', sans-serif;
  font-size: 14px;
  color: var(--text-primary);
  list-style: none;
  transition: background 0.2s;
}

details.major-cat summary::-webkit-details-marker { display: none; }

details.major-cat summary:hover {
  background: var(--bg-hover);
}

details.major-cat[open] summary {
  border-bottom-left-radius: 0;
  border-bottom-right-radius: 0;
}

.cat-expand-icon {
  margin-left: auto;
  color: var(--text-dim);
  font-size: 12px;
  transition: transform 0.2s;
}

details.major-cat[open] .cat-expand-icon {
  transform: rotate(180deg);
}

.cat-color-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

.cat-body {
  border: 1px solid var(--border);
  border-top: none;
  border-radius: 0 0 4px 4px;
  padding: 8px 14px 12px;
  background: rgba(30,37,48,0.5);
}

.minor-group {
  margin-top: 10px;
}

.minor-group-title {
  font-family: 'Zen Maru Gothic', sans-serif;
  font-size: 12px;
  color: var(--text-dim);
  letter-spacing: 0.05em;
  margin-bottom: 6px;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--border-faint);
}

.minor-topic-list {
  list-style: none;
  padding: 0;
}

.minor-topic-list li {
  padding: 3px 0;
}

.minor-topic-list a {
  font-family: 'Shippori Mincho', serif;
  font-size: 14px;
  color: var(--link);
  text-decoration: none;
}

.minor-topic-list a:hover {
  color: var(--link-hover);
}

/* minor別フィルタ（カテゴリページ） */
.minor-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 20px;
}

.filter-btn {
  font-family: 'Zen Maru Gothic', sans-serif;
  font-size: 12px;
  padding: 4px 12px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.15s;
}

.filter-btn:hover,
.filter-btn.active {
  background: rgba(196, 149, 106, 0.15);
  border-color: var(--accent-warm);
  color: var(--accent-gold);
}

/* ポップアップ */
.anchor-popup {
  position: fixed;
  background: var(--bg-content);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 12px 14px;
  max-width: 400px;
  font-family: 'Shippori Mincho', serif;
  font-size: 13.5px;
  color: var(--text-primary);
  line-height: 1.7;
  box-shadow: 0 8px 32px var(--shadow);
  z-index: 1000;
  pointer-events: none;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 0.15s, transform 0.15s;
}

.anchor-popup.visible {
  opacity: 1;
  transform: translateY(0);
}

.anchor-popup-header {
  font-family: 'Zen Maru Gothic', sans-serif;
  font-size: 12px;
  color: var(--text-dim);
  margin-bottom: 6px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border-faint);
}

/* section見出し */
.section-title {
  font-family: 'Shippori Mincho B1', serif;
  font-size: 17px;
  font-weight: 700;
  color: var(--text-primary);
  margin: 32px 0 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}

/* 関連トピック */
.related-topics {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

.related-topics h3 {
  font-family: 'Shippori Mincho B1', serif;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.related-list {
  list-style: none;
  padding: 0;
}

.related-list li {
  padding: 4px 0;
  font-size: 14px;
}

.related-list a {
  color: var(--link);
  text-decoration: none;
}

.related-list a:hover {
  color: var(--link-hover);
}

/* フッタ */
footer {
  text-align: center;
  padding: 24px;
  font-family: 'Zen Maru Gothic', sans-serif;
  font-size: 12px;
  color: var(--text-dim);
  border-top: 1px solid var(--border-faint);
}

/* リンク共通 */
a {
  color: var(--link);
  text-decoration: none;
}

a:hover {
  color: var(--link-hover);
}

/* スクロールバー */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: var(--bg-base);
}

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--accent-warm);
}

/* 精査状態: 未精査は暗く、精査済みは通常表示 */
details.major-cat.unrefined > summary {
  opacity: 0.55;
}
details.major-cat.unrefined > summary:hover {
  opacity: 0.8;
}
.minor-group.unrefined > .minor-group-title {
  opacity: 0.55;
}
.minor-topic-list li.unrefined {
  opacity: 0.55;
}
.minor-topic-list li.unrefined:hover {
  opacity: 0.85;
}
.topic-card.unrefined {
  opacity: 0.55;
}
.topic-card.unrefined:hover {
  opacity: 0.85;
}

/* ユーティリティ */
.text-dim { color: var(--text-dim); }
.text-gold { color: var(--accent-gold); }
.mt-8  { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mb-8  { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }

/* レスポンシブ */
@media (max-width: 600px) {
  body { font-size: 14.5px; }
  .page-title { font-size: 21px; }
  .stats-bar { gap: 16px; }
  .post-header { font-size: 12px; }
}