/*
Theme Name: 水木堂
Theme URI: https://suimokudo.com/
Author: USK AGI
Description: 水木堂のクラシックWordPressテーマ。明るい背景・実写真・クリーンなサンセリフを基調とする。
Version: 0.2.0
Requires at least: 6.0
Tested up to: 6.6
Requires PHP: 8.0
Text Domain: suimokudo
*/

:root {
  --bg: #faf8f3;
  --bg-raised: #ffffff;
  --ink: #1a1f1c;
  --ink-soft: #5b6058;
  --ink-faint: #8a9088;
  --accent: #1f5c47;
  --accent-deep: #143d2f;
  --accent-soft: #e6efe9;
  --rule: #e6e1d4;
  --shadow: rgba(26, 31, 28, 0.08);
  --shadow-strong: rgba(26, 31, 28, 0.16);

  --evidence-5: #1f5c47;
  --evidence-4: #3d7a5c;
  --evidence-3: #a67c2e;
  --evidence-2: #b5622f;
  --evidence-1: #8a8f86;

  --font-serif: "Shippori Mincho B1", "Yu Mincho", "YuMincho", serif;
  --font-sans: "Noto Sans JP", "Hiragino Sans", "Yu Gothic", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
a:focus-visible, button:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
img { max-width: 100%; display: block; }

.wrap { width: min(1160px, calc(100% - 48px)); margin: 0 auto; }

/* ── ヘッダー ── */
.site-header {
  border-bottom: 1px solid var(--rule);
  background: var(--bg-raised);
}
.site-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1.1rem 0;
}
.brand {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  text-decoration: none;
}
.brand-mark {
  font-family: var(--font-serif);
  font-size: 1.55rem;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: 0.02em;
}
.brand-sub {
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--ink-faint);
}
.site-nav {
  display: flex;
  gap: 1.6rem;
  flex-wrap: wrap;
  font-size: 0.92rem;
}
.site-nav a {
  text-decoration: none;
  color: var(--ink-soft);
  border-bottom: 2px solid transparent;
  padding-bottom: 2px;
}
.site-nav a:hover { color: var(--accent); border-bottom-color: var(--accent); }

/* ── ヒーロー（特集記事） ── */
.hero {
  position: relative;
  display: flex;
  margin-top: 2.2rem;
  border-radius: 6px;
  overflow: hidden;
  min-height: clamp(360px, 56vw, 560px);
  align-items: flex-end;
  box-shadow: 0 18px 40px var(--shadow-strong);
  text-decoration: none;
  color: inherit;
}
.hero-media {
  position: absolute;
  inset: 0;
  z-index: 0;
  background-color: var(--accent-deep);
  background-image:
    linear-gradient(0deg, rgba(10, 14, 12, 0.86) 0%, rgba(10, 14, 12, 0.32) 48%, rgba(10, 14, 12, 0.06) 78%),
    var(--hero-photo, none);
  background-size: cover;
  background-position: center;
}
.hero-content {
  position: relative;
  z-index: 1;
  color: #fbfaf6;
  padding: clamp(1.6rem, 4vw, 3.2rem);
  max-width: 760px;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.76rem;
  letter-spacing: 0.1em;
  color: #d9e6df;
  margin-bottom: 0.9rem;
}
.hero-eyebrow .dot { width: 6px; height: 6px; border-radius: 50%; background: #6fb896; flex: none; }
.hero-title {
  margin: 0 0 0.9rem;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: clamp(1.7rem, 3.6vw, 2.6rem);
  line-height: 1.35;
  text-wrap: balance;
}
.hero-excerpt {
  margin: 0 0 1.2rem;
  font-size: 1rem;
  color: #e7ebe6;
  max-width: 56ch;
}
.hero-meta {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  font-size: 0.85rem;
  color: #cfd9d2;
}

/* ── 証拠段階バッジ ── */
.evidence-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.28rem 0.7rem 0.28rem 0.55rem;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 600;
  background: rgba(255, 255, 255, 0.14);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.3);
  white-space: nowrap;
}
.evidence-badge .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: currentColor;
  flex: none;
}
.evidence-badge.on-light {
  background: var(--accent-soft);
  color: var(--accent-deep);
  border-color: transparent;
}
.es-5 { color: #bfe6d3; } .es-5.on-light { color: var(--evidence-5); background: #e4f3ec; }
.es-4 { color: #cdeadb; } .es-4.on-light { color: var(--evidence-4); background: #e9f4ee; }
.es-3 { color: #f0dcae; } .es-3.on-light { color: #6e4a0e; background: #f7efd9; }
.es-2 { color: #f3d0b6; } .es-2.on-light { color: #7c3d17; background: #f8e8dc; }
.es-1 { color: #dcded9; } .es-1.on-light { color: #565b57; background: #eceeea; }
.es-0 { color: #dcded9; } .es-0.on-light { color: #565b57; background: #eceeea; }

/* ── セクション見出し ── */
main { padding: 3.2rem 0 4rem; }
main .wrap section,
main > section { margin-bottom: 3.6rem; }
.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.6rem;
  padding-bottom: 0.9rem;
  border-bottom: 1px solid var(--rule);
}
.section-head h1,
.section-head h2 {
  margin: 0;
  font-size: clamp(1.3rem, 2.4vw, 1.7rem);
  font-weight: 700;
}
.section-note {
  color: var(--ink-faint);
  font-size: 0.86rem;
}

/* ── 記事カード ── */
.article-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.8rem;
}
.article-card {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
}
.card-media {
  aspect-ratio: 3 / 2;
  border-radius: 5px;
  overflow: hidden;
  margin-bottom: 0.9rem;
  background: var(--rule);
}
.card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.article-card:hover .card-media img { transform: scale(1.035); }
.card-tag {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 0.4rem;
}
.card-title {
  margin: 0 0 0.5rem;
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.5;
}
.article-card:hover .card-title { color: var(--accent); }
.card-excerpt {
  margin: 0 0 0.9rem;
  font-size: 0.92rem;
  color: var(--ink-soft);
  line-height: 1.7;
}
.card-meta {
  margin-top: auto;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.7rem;
  font-size: 0.8rem;
  color: var(--ink-faint);
}

.empty-panel {
  background: var(--bg-raised);
  border: 1px solid var(--rule);
  border-radius: 6px;
  padding: 1.6rem;
  color: var(--ink-soft);
}

.pagination-nav { margin-top: 2rem; display: flex; gap: 1rem; font-size: 0.9rem; }
.pagination-nav a, .pagination-nav span { color: var(--ink-soft); text-decoration: none; }
.pagination-nav a:hover { color: var(--accent); }
.pagination-nav .current { color: var(--accent); font-weight: 700; }

/* ── 記事詳細 ── */
.detail-wrap {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 320px);
  gap: 2.4rem;
  align-items: start;
}
.article-detail .kicker {
  font-size: 0.82rem;
  color: var(--ink-faint);
  margin: 0 0 0.6rem;
}
.article-detail h1 {
  margin: 0 0 1.4rem;
  font-size: clamp(1.6rem, 3vw, 2.3rem);
  line-height: 1.4;
  text-wrap: balance;
}
.entry-content { max-width: 68ch; }
.entry-content p { margin: 0 0 1.1rem; }
.entry-content h2 { margin: 2rem 0 1rem; font-size: 1.3rem; font-weight: 700; }
.entry-content h3 { margin: 1.6rem 0 0.8rem; font-size: 1.1rem; font-weight: 700; }
.entry-content img { border-radius: 5px; margin: 1.2rem 0; }
.entry-content a { color: var(--accent); text-decoration-thickness: 1px; }
.entry-content ul, .entry-content ol { padding-left: 1.4rem; }

.certificate {
  position: sticky;
  top: 1.5rem;
  background: var(--bg-raised);
  border: 1px solid var(--rule);
  border-radius: 6px;
  padding: 1.3rem;
  box-shadow: 0 8px 24px var(--shadow);
}
.certificate h2 {
  margin: 0 0 1rem;
  font-size: 1rem;
  font-weight: 700;
}
.cert-row {
  display: flex;
  justify-content: space-between;
  gap: 0.8rem;
  padding: 0.55rem 0;
  border-bottom: 1px solid var(--rule);
  font-size: 0.86rem;
}
.cert-row:last-child { border-bottom: 0; }
.cert-row dt { color: var(--ink-faint); margin: 0; }
.cert-row dd { margin: 0; color: var(--ink); text-align: right; }

/* ── 六領域 / 証拠段階 / 未解決 / 便り ── */
.area-grid, .question-grid, .evidence-grid {
  display: grid;
  gap: 1rem;
}
.area-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.question-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.evidence-grid { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.question-card, .evidence-card {
  background: var(--bg-raised);
  border: 1px solid var(--rule);
  border-radius: 6px;
  padding: 1.2rem;
  text-decoration: none;
  color: inherit;
}
.area-card {
  display: block;
  background: var(--bg-raised);
  border: 1px solid var(--rule);
  border-radius: 6px;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
}
.area-media { aspect-ratio: 16 / 10; overflow: hidden; background: var(--rule); }
.area-media img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.area-card:hover .area-media img { transform: scale(1.04); }
.area-body { padding: 1rem 1.15rem 1.2rem; }
.area-card strong, .question-card strong, .evidence-card strong {
  display: block;
  font-size: 1.02rem;
  margin-bottom: 0.4rem;
}
.area-card:hover strong { color: var(--accent); }
.area-card span, .question-card span, .evidence-card span {
  color: var(--ink-soft);
  font-size: 0.88rem;
}
.evidence-card b {
  display: none;
}

.maturity-scale {
  margin-top: 1.2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  font-size: 0.82rem;
  color: var(--ink-soft);
}
.maturity-scale span { position: relative; padding-left: 1rem; }
.maturity-scale span::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.5em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

.letter-panel, .final-panel {
  background: var(--accent-soft);
  border-radius: 6px;
  padding: clamp(1.4rem, 3vw, 2.2rem);
}
.letter-panel p, .final-panel p {
  margin: 0 0 0.8rem;
  max-width: 62ch;
  color: var(--accent-deep);
}
.letter-panel p:last-child, .final-panel p:last-child { margin-bottom: 0; }
.letter-panel a, .final-panel a { color: var(--accent-deep); font-weight: 600; }

footer.site-footer {
  border-top: 1px solid var(--rule);
  padding: 1.8rem 0;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.8rem;
  font-size: 0.85rem;
  color: var(--ink-faint);
  width: min(1160px, calc(100% - 48px));
  margin: 0 auto;
}
footer.site-footer nav { display: flex; gap: 1.2rem; flex-wrap: wrap; }
footer.site-footer a { text-decoration: none; color: var(--ink-faint); }
footer.site-footer a:hover { color: var(--accent); }

/* JS(IntersectionObserver)が動かない・遅れる環境でもコンテンツが必ず見えるよう、
   デフォルトを非表示にしない。is-visible付与時のみ軽い演出を足す程度にとどめる。 */
.reveal { opacity: 1; transform: none; }
.reveal:not(.is-visible) { transition: none; }

@media (max-width: 900px) {
  .article-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .area-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .evidence-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .detail-wrap { grid-template-columns: 1fr; }
  .certificate { position: static; }
}
@media (max-width: 620px) {
  .site-nav { display: none; }
  .article-list { grid-template-columns: 1fr; }
  .area-grid, .question-grid { grid-template-columns: 1fr; }
  .evidence-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (prefers-reduced-motion: reduce) {
  * { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
  .reveal { opacity: 1; transform: none; }
}