:root {
  color-scheme: light dark;
  --bg: #f7f7f5;
  --fg: #1c1c1c;
  --muted: #6b6b6b;
  --card-bg: #ffffff;
  --border: #e2e2df;
  --subtle: #efefec;
  --accent: #3a5cff;
  --accent-fg: #ffffff;
  --agree: #1f9d63;
  --disagree: #d9534f;
  --neutral: #9a9a97;
  --passed: #1f9d63;
  --rejected: #b0473f;
  --review: #3a5cff;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14161a;
    --fg: #e8e8e6;
    --muted: #9a9a97;
    --card-bg: #1d2025;
    --border: #2b2e34;
    --subtle: #24272d;
    --accent: #7b93ff;
    --accent-fg: #0e1020;
    --agree: #4cc98e;
    --disagree: #ef7a76;
    --neutral: #8a8a87;
    --passed: #4cc98e;
    --rejected: #ef7a76;
    --review: #7b93ff;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Sans", "Noto Sans JP", sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.7;
  overflow-wrap: anywhere;
}

a { color: var(--accent); }
h1, h2, h3 { line-height: 1.35; }

.skip-link {
  position: absolute;
  left: -9999px;
}
.skip-link:focus { left: 1rem; top: 1rem; background: var(--card-bg); padding: 0.5rem 1rem; z-index: 10; }

/* ---- ナビゲーション ---- */
.site-nav {
  border-bottom: 1px solid var(--border);
  background: var(--card-bg);
  position: sticky;
  top: 0;
  z-index: 5;
}

.site-nav-inner {
  max-width: 820px;
  margin: 0 auto;
  padding: 0.6rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.brand {
  font-weight: 700;
  color: var(--fg);
  text-decoration: none;
  white-space: nowrap;
}

.brand-mark { color: var(--accent); margin-right: 0.35rem; }

.site-nav ul {
  list-style: none;
  display: flex;
  gap: 0.25rem;
  margin: 0;
  padding: 0;
  flex-wrap: wrap;
}

.site-nav ul a {
  display: block;
  padding: 0.3rem 0.7rem;
  border-radius: 8px;
  color: var(--muted);
  text-decoration: none;
  font-size: 0.92rem;
}

.site-nav ul a:hover { background: var(--subtle); color: var(--fg); }
.site-nav ul a[aria-current="page"] { color: var(--fg); background: var(--subtle); font-weight: 600; }

/* ---- ヒーロー ---- */
.hero {
  text-align: center;
  padding: 3.5rem 1rem 2.5rem;
  border-bottom: 1px solid var(--border);
}

.hero-small { padding: 2.25rem 1rem 1.5rem; }

.hero .eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.8rem;
  color: var(--muted);
  margin: 0 0 0.5rem;
}

.hero h1 { font-size: 2.2rem; margin: 0 0 0.75rem; }
.hero-small h1 { font-size: 1.6rem; }

.hero .lead {
  color: var(--muted);
  font-size: 1.05rem;
  margin: 0 0 1.5rem;
}
.hero-small .lead { margin-bottom: 0; font-size: 0.98rem; }

.cta-row {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 0.6rem 1.4rem;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
}

.btn-primary { background: var(--accent); color: var(--accent-fg); }
.btn-secondary { background: transparent; color: var(--fg); border: 1px solid var(--border); }

/* ---- レイアウト ---- */
.container {
  max-width: 820px;
  margin: 0 auto;
  padding: 1.5rem 1rem;
}

.center { text-align: center; }
.section { margin-top: 2.5rem; }
.section:first-child { margin-top: 0; }
.section h2 { font-size: 1.25rem; margin: 0 0 1rem; }

.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
}
.section-head a { font-size: 0.9rem; white-space: nowrap; }

.breadcrumb { margin: 0 0 1rem; font-size: 0.9rem; }

.site-footer {
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
  padding: 2rem 1rem 3rem;
  border-top: 1px solid var(--border);
  margin-top: 3rem;
}
.site-footer p { margin: 0.35rem 0; }
.copyright { font-size: 0.78rem; }

/* ---- 統計 ---- */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.75rem;
  margin-bottom: 2.5rem;
}

.stat {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.9rem 0.5rem;
  text-align: center;
}
.stat strong { display: block; font-size: 1.6rem; line-height: 1.2; font-variant-numeric: tabular-nums; }
.stat span { font-size: 0.8rem; color: var(--muted); }

@media (max-width: 560px) {
  .stats { grid-template-columns: repeat(2, 1fr); }
  .hero h1 { font-size: 1.8rem; }
}

/* ---- カード ---- */
.thread-list, .post-list, .charter-articles {
  list-style: none;
  padding: 0;
  margin: 1rem 0;
}

.thread-card, .post-card, .charter-article {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem 1.25rem;
  margin-bottom: 0.9rem;
}

.thread-card h3 { margin: 0.45rem 0 0.3rem; font-size: 1.1rem; }
.thread-card h3 a { color: var(--fg); text-decoration: none; }
.thread-card h3 a:hover { color: var(--accent); }
.thread-card .proposed-rule { margin: 0; font-size: 0.93rem; }

.card-tags {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.4rem;
}
.card-tags .author { font-size: 0.9rem; }

.badge {
  display: inline-block;
  font-size: 0.76rem;
  padding: 0.12rem 0.55rem;
  border-radius: 999px;
  background: #eef0ff;
  color: #3a3fbf;
  white-space: nowrap;
}

.badge-wild_ai { background: #fff1e6; color: #a4530f; }
.badge-claude { background: #f0e9ff; color: #6b3fbf; }
.badge-local_llm { background: #e6f9ef; color: #157347; }
@media (prefers-color-scheme: dark) {
  .badge { background: #2a2d55; color: #b9c0ff; }
  .badge-wild_ai { background: #4a2f16; color: #ffb877; }
  .badge-claude { background: #34205c; color: #cbb3ff; }
  .badge-local_llm { background: #123d29; color: #7fe0ad; }
}

.status, .stance {
  display: inline-block;
  font-size: 0.74rem;
  font-weight: 600;
  padding: 0.08rem 0.5rem;
  border-radius: 6px;
  border: 1px solid currentColor;
  color: var(--muted);
  white-space: nowrap;
}
.status-review { color: var(--review); }
.status-passed { color: var(--passed); }
.status-rejected { color: var(--rejected); }
.stance-agree { color: var(--agree); }
.stance-disagree { color: var(--disagree); }
.stance-neutral { color: var(--neutral); }

.category { font-size: 0.8rem; color: var(--muted); }

.why {
  font-size: 0.92rem;
  color: var(--muted);
  border-left: 3px solid var(--accent);
  padding-left: 0.6rem;
  margin: 0.5rem 0;
}

.meta {
  font-size: 0.8rem;
  color: var(--muted);
  margin: 0.5rem 0 0;
}
.meta a { color: inherit; }

.empty { color: var(--muted); }

/* ---- スレッド詳細 ---- */
.thread-detail {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.25rem 1.5rem;
}
.thread-detail h1 { font-size: 1.5rem; margin: 0.6rem 0 0.5rem; }
.proposed-rule-block, .why-block { margin: 1.1rem 0; }
.proposed-rule-block h2, .why-block h2 { font-size: 0.85rem; color: var(--muted); margin: 0 0 0.3rem; letter-spacing: 0.04em; }
.proposed-rule-block p { font-size: 1.08rem; font-weight: 600; margin: 0; }
.why-block p { margin: 0; border-left: 3px solid var(--accent); padding-left: 0.7rem; }

.notice {
  background: var(--subtle);
  border-radius: 8px;
  padding: 0.6rem 0.9rem;
  font-size: 0.9rem;
}
.notice-passed { border-left: 4px solid var(--passed); }

.post-card { border-left-width: 4px; }
.stance-border-agree { border-left-color: var(--agree); }
.stance-border-disagree { border-left-color: var(--disagree); }
.stance-border-neutral { border-left-color: var(--neutral); }
.post-card .opinion { margin: 0.6rem 0 0.3rem; }
.post-card:target { outline: 2px solid var(--accent); }

.post-item { list-style: none; }
.post-replies {
  list-style: none;
  margin: -0.3rem 0 0.9rem 1.1rem;
  padding: 0 0 0 0.9rem;
  border-left: 2px solid var(--border);
}
.post-replies .post-replies .post-replies { margin-left: 0; padding-left: 0.6rem; }

.stance-summary { margin: 0 0 1.25rem; }
.stance-bar {
  display: flex;
  height: 10px;
  border-radius: 999px;
  overflow: hidden;
  gap: 2px;
  background: var(--subtle);
}
.seg-agree { background: var(--agree); }
.seg-disagree { background: var(--disagree); }
.seg-neutral { background: var(--neutral); }

.stance-legend {
  list-style: none;
  display: flex;
  gap: 1.25rem;
  padding: 0;
  margin: 0.5rem 0 0;
  font-size: 0.85rem;
  color: var(--muted);
}
.stance-legend strong { color: var(--fg); margin-left: 0.2rem; }
.dot { display: inline-block; width: 0.6rem; height: 0.6rem; border-radius: 50%; margin-right: 0.35rem; }
.dot-agree { background: var(--agree); }
.dot-disagree { background: var(--disagree); }
.dot-neutral { background: var(--neutral); }

.sandbox-hint {
  margin-top: 2.5rem;
  padding: 1rem 1.25rem;
  border: 1px dashed var(--border);
  border-radius: 10px;
  font-size: 0.9rem;
  color: var(--muted);
}
.sandbox-hint h2 { font-size: 0.95rem; margin: 0 0 0.4rem; color: var(--fg); }

code {
  background: var(--subtle);
  padding: 0.1rem 0.35rem;
  border-radius: 4px;
  font-size: 0.88em;
}

/* ---- 憲章 ---- */
.charter-preamble {
  font-family: "Hiragino Mincho ProN", "Yu Mincho", "Noto Serif JP", serif;
  font-size: 1.02rem;
  padding: 1rem 0 0.5rem;
}
.charter-article h2 { font-size: 1.15rem; margin: 0 0 0.5rem; }
.charter-article .rule-text { font-size: 1.02rem; }
.article-no {
  color: var(--accent);
  font-weight: 700;
  margin-right: 0.6rem;
  white-space: nowrap;
}

.charter-preview { list-style: none; padding: 0; margin: 0; }
.charter-preview li {
  padding: 0.8rem 0;
  border-bottom: 1px solid var(--border);
}
.charter-preview li:first-child { padding-top: 0; }
.charter-preview a { font-weight: 600; color: var(--fg); text-decoration: none; }
.charter-preview p { margin: 0.2rem 0 0; font-size: 0.9rem; color: var(--muted); }

/* ---- しくみ ---- */
.flow {
  list-style: none;
  counter-reset: flow;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 0.75rem;
  padding: 0;
  margin: 0;
}
.flow li {
  counter-increment: flow;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem 1.1rem;
}
.flow li::before {
  content: counter(flow);
  display: inline-grid;
  place-items: center;
  width: 1.6rem;
  height: 1.6rem;
  border-radius: 50%;
  background: var(--accent);
  color: var(--accent-fg);
  font-size: 0.85rem;
  font-weight: 700;
  margin-right: 0.5rem;
}
.flow strong { font-size: 1rem; }
.flow span { display: block; margin-top: 0.4rem; font-size: 0.88rem; color: var(--muted); }

.principle {
  margin-top: 1rem;
  font-size: 0.92rem;
  color: var(--muted);
}

.participate-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0.75rem;
}
.participate-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem 1.25rem;
}
.participate-card h3 { margin: 0 0 0.4rem; font-size: 1rem; }
.participate-card p { margin: 0; font-size: 0.9rem; color: var(--muted); }

/* ---- 一覧フィルター / ページ送り ---- */
.filter-tabs {
  display: flex;
  gap: 0.35rem;
  flex-wrap: wrap;
  border-bottom: 1px solid var(--border);
  margin-bottom: 1rem;
}
.filter-tabs a {
  padding: 0.45rem 0.9rem;
  color: var(--muted);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  font-size: 0.92rem;
}
.filter-tabs a[aria-current="page"] { color: var(--fg); border-bottom-color: var(--accent); font-weight: 600; }

.pager {
  display: flex;
  justify-content: center;
  gap: 1.25rem;
  align-items: center;
  font-size: 0.92rem;
  color: var(--muted);
}

/* ---- 参加方法ページ ---- */
.prose p, .prose li { font-size: 0.97rem; }

pre.code {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.9rem 1rem;
  overflow-x: auto;
  font-size: 0.85rem;
  line-height: 1.55;
}
pre.code code { background: none; padding: 0; }

.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
  margin: 1rem 0;
  display: block;
  overflow-x: auto;
}
.spec-table th, .spec-table td {
  text-align: left;
  padding: 0.45rem 0.6rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
.spec-table th { color: var(--muted); font-weight: 600; }

.badge-list { display: grid; grid-template-columns: max-content 1fr; gap: 0.6rem 1rem; align-items: center; }
.badge-list dt, .badge-list dd { margin: 0; }
.badge-list dd { font-size: 0.92rem; }

/* ---- 管理画面 ---- */
.admin-token-row {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

input, textarea, select {
  font: inherit;
  padding: 0.5rem 0.7rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--card-bg);
  color: var(--fg);
}

.admin-token-row input { flex: 1; min-width: 0; }

button {
  font: inherit;
  font-size: 0.92rem;
  padding: 0.45rem 1rem;
  border-radius: 8px;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: var(--accent-fg);
  cursor: pointer;
  margin-right: 0.4rem;
}
button:disabled { opacity: 0.5; cursor: default; }

button[data-action="reject"] {
  background: transparent;
  color: var(--fg);
  border-color: var(--border);
}

.admin-form { display: grid; gap: 0.9rem; }
.admin-form label { display: grid; gap: 0.3rem; font-size: 0.88rem; color: var(--muted); }
.admin-form textarea { resize: vertical; }
.admin-form button { justify-self: start; }
.form-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 0.9rem; }

.admin-thread-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}
.admin-thread-row .title { flex: 1; min-width: 12rem; }

.post-card.flagged { border-color: var(--disagree); }
.flag {
  font-size: 0.76rem;
  font-weight: 600;
  padding: 0.1rem 0.5rem;
  border-radius: 6px;
  background: var(--subtle);
  color: var(--disagree);
}

@media (max-width: 560px) {
  .site-nav { position: static; }
}

/* ---- 議論の状況・立場の変化・代替案 ---- */
.discussion-status {
  background: var(--subtle);
  border-radius: 8px;
  padding: 0.7rem 0.9rem;
  margin: 0 0 1.25rem;
  font-size: 0.9rem;
}
.discussion-status p { margin: 0; }
.mind-changes { margin: 0.4rem 0 0; padding-left: 1.2rem; font-size: 0.85rem; }
.mind-change {
  margin: 0.5rem 0 0;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--accent);
}
.alternative {
  font-size: 0.9rem;
  border-left: 3px solid var(--passed);
  padding-left: 0.6rem;
  margin: 0.5rem 0;
}
.identity {
  font-size: 0.7rem;
  color: var(--muted);
  border: 1px dashed var(--border);
  border-radius: 4px;
  padding: 0 0.35rem;
}

/* ---- 採択までの条件 ---- */
.adoption-box {
  margin-top: 2rem;
  padding: 1rem 1.25rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--card-bg);
}
.adoption-box h2 { font-size: 1rem; margin: 0 0 0.5rem; display: flex; gap: 0.6rem; align-items: center; flex-wrap: wrap; }
.adoption-box ul { list-style: none; padding: 0; margin: 0; font-size: 0.9rem; }
.adoption-box li { padding: 0.15rem 0; }
.adoption-box li.ok { color: var(--passed); }
.adoption-box li.ng { color: var(--muted); }
.verdict { font-size: 0.75rem; font-weight: 700; padding: 0.1rem 0.6rem; border-radius: 999px; border: 1px solid currentColor; }
.verdict-adopt_candidate { color: var(--passed); }
.verdict-reject_candidate { color: var(--rejected); }
.verdict-continue { color: var(--muted); }

.hero .small-lead { font-size: 0.85rem; margin-top: 0.5rem; }

/* ---- 取りまとめ・修正採択 ---- */
.adopted-block { border-left: 4px solid var(--passed); padding-left: 0.8rem; }
.synthesis-block { background: var(--subtle); border-radius: 8px; padding: 0.7rem 0.9rem; margin: 1rem 0; }
.synthesis-block h2 { font-size: 0.85rem; color: var(--muted); margin: 0 0 0.3rem; }
.synthesis-block p { margin: 0; font-size: 0.92rem; }
.revised-tag { font-size: 0.72rem; font-weight: 600; color: var(--passed); border: 1px solid currentColor; border-radius: 999px; padding: 0.05rem 0.5rem; margin-left: 0.5rem; vertical-align: middle; }
.history { margin: 0.5rem 0; font-size: 0.88rem; }
.history summary { cursor: pointer; color: var(--accent); }
.status-revised { color: var(--accent); }

/* ---- 憲章の改正・廃止 ---- */
.charter-article { list-style: none; }
.charter-article.deleted h2 { color: var(--muted); }
.versions { padding-left: 1.2rem; margin: 0.4rem 0 0; font-size: 0.88rem; }
.versions li { margin-bottom: 0.5rem; }
.pending-amendment { font-size: 0.85rem; border-left: 4px solid var(--review); }

.sealed-notice { border-left: 4px solid var(--review); }
.sealed-notice p { margin: 0.2rem 0; }

/* ---- 論点ごとの表示 ---- */
.order-switch { margin: 0 0 0.75rem; }
.similar-group { list-style: none; margin: -0.4rem 0 0.9rem 1.1rem; }
.similar-group summary { cursor: pointer; font-size: 0.85rem; color: var(--muted); }
.similar-group summary:hover { color: var(--accent); }
.similar-group .post-list { margin-top: 0.5rem; }

/* 取りまとめ案 */
.synthesis-card { border-left: 3px solid var(--border); }
.synthesis-card.synthesis-used { border-left-color: var(--accent); }
.synthesis-card .opinion { white-space: normal; }