/* ============================================================
   NIKKI Theme - 共通レイアウトCSS
   (scheme-a/b/c/d.css は元々React用のクラス名 (.a-header等) を持つが、
    WordPressテンプレート側は .site-header 等の共通クラス名を使う)

   このファイルは WordPress テンプレート側の骨格スタイルを提供します。
   各案の色・タイポグラフィは scheme-*.css で body.scheme-a 等の
   セレクタで上書きされます。
============================================================ */

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: "Noto Sans JP", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.7;
  color: #1a2237;
  background: #fff;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a  { color: inherit; text-decoration: none; }
a:hover { opacity: 0.75; }

.screen-reader-text { position: absolute; left: -9999px; }
.skip-link:focus { position: absolute; left: 8px; top: 8px; background: #0a1930; color:#fff; padding: 8px 12px; z-index: 100000; }

.section-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 80px 24px;
}
@media (max-width: 768px) {
  .section-inner { padding: 48px 20px; }
}

/* ========== Header ========== */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: #fff;
  border-bottom: 1px solid #e8eaef;
}
.site-header-inner {
  max-width: 1200px; margin: 0 auto;
  padding: 16px 24px;
  display: flex; align-items: center; gap: 32px;
}
.site-logo { flex-shrink: 0; }
.site-logo img { height: 44px; width: auto; }

.site-nav { flex: 1; }
.site-menu {
  list-style: none; margin: 0; padding: 0;
  display: flex; gap: 32px;
}
.site-menu a {
  font-size: 14px; font-weight: 500; letter-spacing: 0.06em;
  padding: 8px 0; display: inline-block;
  transition: color .18s;
}
.site-menu li.current-menu-item a,
.site-menu a.active { color: #d97852; font-weight: 600; }

.site-header-cta { display: flex; align-items: center; gap: 16px; }
.header-tel { font-size: 13px; display: inline-flex; align-items: center; gap: 6px; }

.site-nav-toggle {
  display: none; width: 36px; height: 36px; border: 0; background: transparent;
  cursor: pointer; padding: 0; flex-direction: column; gap: 5px;
  align-items: center; justify-content: center;
}
.site-nav-toggle span {
  width: 22px; height: 2px; background: #1a2237; transition: transform .2s;
}

@media (max-width: 900px) {
  .site-header-inner { gap: 16px; }
  .site-nav {
    position: fixed; top: 76px; left: 0; right: 0;
    background: #fff; padding: 24px;
    max-height: 0; overflow: hidden; transition: max-height .3s;
  }
  .site-nav.is-open { max-height: 80vh; border-top: 1px solid #e8eaef; }
  .site-menu { flex-direction: column; gap: 12px; }
  .site-nav-toggle { display: flex; margin-left: auto; }
  .site-header-cta .btn { display: none; }
  .header-tel { font-size: 12px; }
}

/* ========== Buttons ========== */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 24px; border-radius: 4px;
  font-size: 14px; font-weight: 600; letter-spacing: 0.04em;
  cursor: pointer; border: 1px solid transparent;
  transition: all .18s;
  font-family: inherit;
}
.btn-primary { background: #d97852; color: #fff; }
.btn-primary:hover { background: #c86a44; opacity: 1; }
.btn-ghost { background: transparent; border-color: #1a2237; color: #1a2237; }
.btn-ghost:hover { background: #1a2237; color: #fff; opacity: 1; }

/* ========== Page Hero ========== */
.page-hero {
  padding: 100px 24px 80px;
  background: linear-gradient(180deg, #f7f8fb, #fff);
  border-bottom: 1px solid #e8eaef;
}
.page-hero-inner { max-width: 1200px; margin: 0 auto; }
.page-hero-eyebrow {
  font-family: "Inter", sans-serif;
  font-size: 12px; letter-spacing: 0.2em; color: #7a8ca8;
  text-transform: uppercase; margin: 0 0 16px;
}
.page-hero-title {
  font-size: clamp(28px, 5vw, 52px);
  font-weight: 700; line-height: 1.3;
  margin: 0 0 24px; letter-spacing: 0.02em;
}
.page-hero-body {
  font-size: 16px; line-height: 1.9; color: #4a5670;
  max-width: 620px; margin: 0 0 32px;
}
.page-hero-cta { display: flex; gap: 12px; flex-wrap: wrap; }

/* ========== Section title ========== */
.section-title {
  font-size: clamp(24px, 3.5vw, 36px);
  text-align: center; margin: 0 0 16px; font-weight: 700;
}
.section-lead {
  text-align: center; color: #4a5670; margin: 0 0 48px;
  font-size: 14px; line-height: 1.9;
}
.section-subtitle {
  font-size: 22px; font-weight: 700; margin: 48px 0 24px;
  padding-bottom: 12px; border-bottom: 2px solid #d97852;
}

/* ========== Services grid ========== */
.services-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}
.service-card {
  background: #fff; border: 1px solid #e8eaef; border-radius: 8px;
  padding: 32px 24px; text-align: left;
  transition: transform .3s, box-shadow .3s, opacity .4s;
  opacity: 0; transform: translateY(20px);
}
.service-card.is-in { opacity: 1; transform: translateY(0); }
.service-card:hover { transform: translateY(-4px); box-shadow: 0 12px 32px rgba(10,25,48,.08); }
.service-card-icon { color: #d97852; margin-bottom: 16px; }
.service-card-no {
  font-family: "Inter", sans-serif; font-size: 11px; color: #7a8ca8;
  letter-spacing: 0.15em; margin: 0 0 8px;
}
.service-card-title { font-size: 20px; font-weight: 700; margin: 0 0 8px; }
.service-card-lead { font-size: 13px; color: #4a5670; line-height: 1.8; margin: 0 0 16px; }
.service-card-more {
  font-size: 13px; color: #d97852; font-weight: 600;
  display: inline-flex; gap: 4px; align-items: center;
}
.service-card-featured {
  background: #0a1930; color: #fff; border-color: #0a1930;
}
.service-card-featured .service-card-title,
.service-card-featured .service-card-lead { color: #fff; }
.service-card-featured .service-card-lead { color: #b7c4d9; }

/* ========== Stats ========== */
.section-stats {
  background: #f7f8fb; border-top: 1px solid #e8eaef; border-bottom: 1px solid #e8eaef;
}
.section-stats-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 24px; padding: 60px 24px;
}
.stat {
  opacity: 0; transform: translateY(20px);
  transition: opacity .5s, transform .5s;
}
.stat.is-in { opacity: 1; transform: translateY(0); }
.stat-num {
  font-family: "Inter", sans-serif;
  font-size: 40px; font-weight: 700; margin: 0; color: #0a1930;
}
.stat-unit { font-size: 16px; margin-left: 4px; color: #7a8ca8; }
.stat-label { font-size: 12px; color: #7a8ca8; margin: 4px 0 0; letter-spacing: 0.08em; }

/* ========== Feature banner ========== */
.section-feature { background: #fff; }
.feature-banner {
  background: linear-gradient(135deg, #0a1930 0%, #1a3050 100%);
  color: #fff; padding: 60px 48px; border-radius: 8px;
  max-width: 1000px; margin: 0 auto;
}
.feature-tag {
  display: inline-block; padding: 6px 14px;
  background: rgba(217,120,82,.2); color: #d97852;
  font-size: 12px; letter-spacing: 0.06em; margin: 0 0 16px;
  border-radius: 999px;
}
.feature-title { font-size: clamp(22px, 3vw, 32px); font-weight: 700; margin: 0 0 20px; line-height: 1.4; }
.feature-body { font-size: 14px; line-height: 1.9; color: #b7c4d9; margin: 0 0 24px; }
.feature-kpis {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 20px; margin: 0 0 32px;
  padding: 24px 0; border-top: 1px solid rgba(255,255,255,.1); border-bottom: 1px solid rgba(255,255,255,.1);
}
.feature-kpi-value {
  font-family: "Inter", sans-serif; font-size: 24px; font-weight: 700;
  color: #d97852; margin: 0;
}
.feature-kpi-key { font-size: 11px; color: #7a8ca8; margin: 4px 0 0; letter-spacing: 0.08em; }

/* ========== News list ========== */
.section-news { background: #f7f8fb; }
.news-list { list-style: none; padding: 0; margin: 0 0 24px; max-width: 900px; margin-left: auto; margin-right: auto; }
.news-list li {
  padding: 18px 0; border-bottom: 1px solid #e8eaef;
  display: grid; grid-template-columns: 100px 80px 1fr; gap: 16px; align-items: center;
}
.news-list time { font-family: "Inter", sans-serif; font-size: 12px; color: #7a8ca8; }
.news-cat {
  display: inline-block; padding: 3px 10px; background: #0a1930; color: #fff;
  font-size: 11px; text-align: center; border-radius: 3px;
}
.news-more { text-align: right; font-size: 13px; font-weight: 600; }
@media (max-width: 640px) {
  .news-list li { grid-template-columns: 90px 70px; }
  .news-list li a { grid-column: 1 / -1; }
}

/* ========== Contact CTA ========== */
.section-contact-cta {
  background: #0a1930; color: #fff; padding: 80px 24px;
  text-align: center;
}
.section-contact-cta h2 {
  font-size: clamp(22px, 3.5vw, 32px); font-weight: 700; line-height: 1.5;
  margin: 0 0 16px;
}
.section-contact-cta p { color: #b7c4d9; font-size: 14px; margin: 0 0 32px; }
.contact-cta-buttons { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.section-contact-cta .btn-ghost { border-color: #b7c4d9; color: #fff; }

/* ========== Footer ========== */
.site-footer { background: #0a1930; color: #b7c4d9; padding: 60px 24px 32px; }
.site-footer-inner { max-width: 1200px; margin: 0 auto; }
.site-footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px; padding-bottom: 40px; border-bottom: 1px solid #23334f;
}
.site-footer-logo img { background: #fff; padding: 8px 12px; border-radius: 4px; }
.site-footer-meta { font-size: 12px; line-height: 1.9; margin: 16px 0; color: #8ba0c2; }
.site-footer-sns { display: flex; gap: 8px; }
.site-footer-sns a {
  display: inline-flex; width: 32px; height: 32px; border-radius: 50%;
  background: #1a3050; align-items: center; justify-content: center;
  font-size: 12px; color: #b7c4d9;
}
.site-footer-col h5 {
  font-family: "Inter", sans-serif; font-size: 11px; letter-spacing: 0.2em;
  color: #7a8ca8; margin: 0 0 16px;
}
.site-footer-col ul { list-style: none; padding: 0; margin: 0; }
.site-footer-col li { font-size: 13px; padding: 4px 0; }
.site-footer-bottom {
  display: flex; justify-content: space-between; padding-top: 24px;
  font-size: 11px; color: #7a8ca8; flex-wrap: wrap; gap: 8px;
}
@media (max-width: 900px) {
  .site-footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .site-footer-grid { grid-template-columns: 1fr; gap: 32px; }
}

/* ========== Company table ========== */
.company-table {
  width: 100%; border-collapse: collapse; margin: 24px 0;
}
.company-table th, .company-table td {
  padding: 16px; border-bottom: 1px solid #e8eaef;
  font-size: 14px; text-align: left;
}
.company-table th {
  background: #f7f8fb; width: 30%; color: #4a5670; font-weight: 600;
}

/* ========== History list ========== */
.history-list { list-style: none; padding: 0; margin: 0; }
.history-item {
  display: grid; grid-template-columns: 120px 1fr; gap: 24px;
  padding: 24px 0; border-bottom: 1px solid #e8eaef;
  opacity: 0; transform: translateY(20px);
  transition: opacity .5s, transform .5s;
}
.history-item.is-in { opacity: 1; transform: translateY(0); }
.history-year {
  font-family: "Inter", sans-serif; font-size: 12px; letter-spacing: 0.1em;
  color: #d97852; font-weight: 600; padding-top: 4px;
}
.history-body h3 { font-size: 16px; font-weight: 700; margin: 0 0 6px; }
.history-body p { font-size: 13px; color: #4a5670; margin: 0; line-height: 1.9; }
@media (max-width: 640px) {
  .history-item { grid-template-columns: 1fr; gap: 8px; }
}

/* ========== Services detail ========== */
.services-detail { padding: 60px 24px; max-width: 1200px; }
.service-detail {
  display: grid; grid-template-columns: 200px 1fr;
  gap: 40px; padding: 40px 0; border-bottom: 1px solid #e8eaef;
}
.service-detail-visual {
  color: #d97852; display: flex; align-items: flex-start; justify-content: center;
  padding-top: 8px;
}
.service-detail-no {
  font-family: "Inter", sans-serif; font-size: 12px; color: #7a8ca8;
  margin: 0 0 8px; letter-spacing: 0.1em;
}
.service-detail-title { font-size: 28px; font-weight: 700; margin: 0 0 4px; }
.service-detail-title-en {
  font-family: "Inter", sans-serif; font-size: 12px; color: #7a8ca8;
  margin: 0 0 16px; letter-spacing: 0.15em;
}
.service-detail-tag {
  display: inline-block; padding: 4px 12px; background: #d97852; color: #fff;
  font-size: 11px; border-radius: 3px; margin: 0 0 16px;
}
.service-detail-lead { font-size: 18px; font-weight: 700; color: #0a1930; margin: 0 0 16px; }
.service-detail-desc { font-size: 14px; line-height: 1.9; color: #4a5670; margin: 0 0 20px; }
.service-detail-points {
  list-style: none; padding: 0; margin: 0;
  display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 8px;
}
.service-detail-points li {
  padding-left: 20px; position: relative; font-size: 13px; color: #4a5670;
}
.service-detail-points li::before {
  content: '—'; position: absolute; left: 0; color: #d97852;
}
.service-detail-featured {
  background: #f7f8fb; padding: 40px; border-radius: 8px; border: 0;
}
@media (max-width: 768px) {
  .service-detail { grid-template-columns: 1fr; gap: 20px; }
  .service-detail-visual { justify-content: flex-start; }
}

/* ========== Works grid ========== */
.works-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}
.work-card {
  background: #fff; border: 1px solid #e8eaef; border-radius: 8px; overflow: hidden;
  opacity: 0; transform: translateY(20px);
  transition: opacity .5s, transform .5s;
}
.work-card.is-in { opacity: 1; transform: translateY(0); }
.work-card-thumb { display: block; background: #f7f8fb; aspect-ratio: 4/3; }
.work-card-thumb img { width: 100%; height: 100%; object-fit: cover; }
.work-card-placeholder {
  aspect-ratio: 4/3; display: flex; align-items: center; justify-content: center;
  color: #b7c4d9; font-size: 14px; letter-spacing: 0.1em;
}
.work-card-body { padding: 20px; }
.work-card-cat { font-size: 11px; color: #d97852; letter-spacing: 0.1em; margin: 0 0 8px; }
.work-card-title { font-size: 16px; margin: 0 0 12px; font-weight: 700; line-height: 1.5; }
.work-card-meta { display: grid; grid-template-columns: 70px 1fr; gap: 4px 12px; font-size: 12px; margin: 0; }
.work-card-meta dt { color: #7a8ca8; }
.work-card-meta dd { margin: 0; color: #4a5670; }

/* ========== Recruit list ========== */
.recruit-list { display: grid; gap: 24px; }
.recruit-card {
  background: #fff; border: 1px solid #e8eaef; border-radius: 8px; padding: 32px;
}
.recruit-card-title { font-size: 22px; font-weight: 700; margin: 0 0 16px; color: #0a1930; }
.recruit-card-meta {
  display: grid; grid-template-columns: 100px 1fr; gap: 8px 16px;
  padding: 16px 0; border-top: 1px solid #e8eaef; border-bottom: 1px solid #e8eaef;
  margin: 0 0 16px; font-size: 13px;
}
.recruit-card-meta dt { color: #7a8ca8; font-weight: 500; }
.recruit-card-meta dd { margin: 0; color: #1a2237; }
.recruit-card-body { font-size: 14px; line-height: 1.8; color: #4a5670; }

/* ========== Contact page ========== */
.contact-grid {
  display: grid; grid-template-columns: 1fr 1.5fr; gap: 48px;
}
.contact-tel { padding: 20px 0; }
.contact-tel-label { font-size: 12px; color: #7a8ca8; margin: 0 0 8px; letter-spacing: 0.08em; }
.contact-tel-num {
  font-family: "Inter", sans-serif; font-size: 26px; font-weight: 700;
  color: #0a1930; display: inline-flex; align-items: center; gap: 8px;
}
.contact-tel-note { font-size: 12px; color: #7a8ca8; margin: 4px 0 0; }
.contact-mail {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 16px; color: #d97852; font-weight: 600;
}
.contact-form-placeholder {
  background: #f7f8fb; border: 2px dashed #d0d6e0; border-radius: 8px;
  padding: 32px; font-size: 13px; color: #4a5670;
}
.contact-form-placeholder ol { padding-left: 20px; margin: 12px 0; }
.contact-form-placeholder code { background: #e8eaef; padding: 2px 6px; border-radius: 3px; font-size: 12px; }
@media (max-width: 768px) {
  .contact-grid { grid-template-columns: 1fr; gap: 32px; }
}

/* ========== Post content ========== */
.page-content { font-size: 15px; line-height: 1.9; }
.page-content h2 { font-size: 24px; margin: 40px 0 16px; }
.page-content h3 { font-size: 18px; margin: 32px 0 12px; }
.page-content p { margin: 0 0 20px; }
.page-content a { color: #d97852; text-decoration: underline; }
.post-nav { display: flex; justify-content: space-between; margin: 40px 0 0; padding-top: 32px; border-top: 1px solid #e8eaef; }
.post-thumbnail { margin: 0 0 32px; border-radius: 8px; overflow: hidden; }

/* ========== Utility ========== */
.menu-open { overflow: hidden; }