/* ============================================================
   aofinance — Article Stylesheet
   記事ページ専用スタイル
============================================================ */

/* ---- Article Main Layout ---- */
.article-main {
  padding-top: var(--header-h);
  min-height: 100vh;
  background: var(--slate-50);
}

/* ============================================================
   Article Hero
============================================================ */
.article-hero {
  position: relative;
  background: linear-gradient(135deg, var(--blue-900) 0%, var(--blue-700) 60%, var(--blue-500) 100%);
  padding: 3.5rem 0 3rem;
  overflow: hidden;
}

.article-hero-bg {
  position: absolute; inset: 0; pointer-events: none;
}

.ah-shape {
  position: absolute;
  border-radius: 50%;
  opacity: .12;
}
.ah-shape-1 {
  width: 420px; height: 420px;
  background: radial-gradient(circle, #fff 0%, transparent 70%);
  top: -120px; right: -80px;
}
.ah-shape-2 {
  width: 260px; height: 260px;
  background: radial-gradient(circle, var(--blue-300) 0%, transparent 70%);
  bottom: -80px; left: 10%;
}
.ah-shape-3 {
  width: 180px; height: 180px;
  background: radial-gradient(circle, #f59e0b 0%, transparent 70%);
  top: 40px; left: 30%;
  opacity: .1;
}

.article-hero-inner {
  position: relative; z-index: 1;
}

.article-meta-top {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.article-back-link {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  color: rgba(255,255,255,.75);
  font-size: .85rem;
  text-decoration: none;
  transition: color var(--transition);
}
.article-back-link:hover { color: #fff; }

.article-category-badge {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  background: rgba(245,158,11,.25);
  color: #fcd34d;
  border: 1px solid rgba(245,158,11,.4);
  border-radius: 100px;
  padding: .3rem .85rem;
  font-size: .82rem;
  font-weight: 600;
  letter-spacing: .04em;
}

.article-hero-title {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 800;
  color: #fff;
  line-height: 1.4;
  letter-spacing: -.01em;
  margin-bottom: 1.2rem;
}

.article-hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem 1.4rem;
  color: rgba(255,255,255,.65);
  font-size: .82rem;
}
.article-hero-meta span {
  display: flex; align-items: center; gap: .35rem;
}

/* ============================================================
   Article Body Layout
============================================================ */
.article-body-wrap {
  padding: 2.5rem 0 4rem;
}

.article-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 2.5rem;
  align-items: start;
}

@media (max-width: 900px) {
  .article-layout {
    grid-template-columns: 1fr;
  }
  .article-sidebar {
    order: -1;
  }
}

/* ============================================================
   Article Content
============================================================ */
.article-content {
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: 2.5rem 2.8rem;
  line-height: 1.85;
  color: var(--slate-800);
}

@media (max-width: 640px) {
  .article-content { padding: 1.6rem 1.3rem; }
}

.article-lead {
  font-size: 1.05rem;
  color: var(--slate-700);
  background: var(--blue-50);
  border-left: 4px solid var(--blue-500);
  padding: 1rem 1.3rem;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin-bottom: 1.8rem;
  line-height: 1.75;
}

/* ---- 関連記事バナー ---- */
.related-banner {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  background: linear-gradient(135deg, #fef3c7, #fffbeb);
  border: 1px solid #fcd34d;
  border-radius: var(--radius-md);
  padding: 1.1rem 1.3rem;
  margin-bottom: 2.5rem;
}
.related-banner-icon {
  flex-shrink: 0;
  width: 2.2rem; height: 2.2rem;
  background: #f59e0b;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  font-size: .9rem;
}
.related-banner-label {
  font-size: .75rem;
  font-weight: 700;
  color: #92400e;
  text-transform: uppercase;
  letter-spacing: .06em;
  margin-bottom: .25rem;
}
.related-banner-text p:last-child {
  font-size: .9rem;
  color: #78350f;
  line-height: 1.6;
}

/* ---- Section Headers ---- */
.article-section {
  margin-bottom: 3rem;
}
.article-section:last-child { margin-bottom: 0; }

.article-h2 {
  display: flex;
  align-items: center;
  gap: .7rem;
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--blue-900);
  margin: 2.2rem 0 1.1rem;
  padding-bottom: .7rem;
  border-bottom: 2px solid var(--blue-100);
}
.article-h2-marker {
  display: inline-block;
  width: 5px;
  height: 1.35rem;
  background: linear-gradient(180deg, var(--blue-500), var(--blue-700));
  border-radius: 3px;
  flex-shrink: 0;
}

.article-h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--slate-800);
  margin: 1.8rem 0 .7rem;
  padding-left: .9rem;
  border-left: 3px solid var(--blue-400);
}

.article-content p {
  margin-bottom: 1.1rem;
  font-size: .97rem;
}
.article-content strong {
  color: var(--blue-800);
  font-weight: 700;
}
.article-content cite {
  font-style: normal;
  color: var(--slate-500);
  font-size: .9em;
}

/* ============================================================
   Info Cards（数値ハイライト）
============================================================ */
.info-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin: 1.5rem 0 2rem;
}

@media (max-width: 640px) {
  .info-cards { grid-template-columns: 1fr; }
}

.info-card {
  border-radius: var(--radius-md);
  padding: 1.2rem;
  display: flex;
  gap: .9rem;
  align-items: flex-start;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}
.info-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.info-card--gold {
  background: linear-gradient(135deg, #fffbeb, #fef3c7);
  border: 1px solid #fcd34d;
}
.info-card--blue {
  background: linear-gradient(135deg, var(--blue-50), var(--blue-100));
  border: 1px solid var(--blue-200);
}
.info-card--red {
  background: linear-gradient(135deg, #fff1f2, #ffe4e6);
  border: 1px solid #fecdd3;
}

.info-card-icon {
  flex-shrink: 0;
  width: 2.4rem; height: 2.4rem;
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.05rem;
}
.info-card--gold .info-card-icon { background: #f59e0b; color: #fff; }
.info-card--blue .info-card-icon { background: var(--blue-500); color: #fff; }
.info-card--red  .info-card-icon { background: #f43f5e; color: #fff; }

.info-card-label {
  font-size: .75rem;
  font-weight: 600;
  color: var(--slate-500);
  letter-spacing: .04em;
  margin-bottom: .2rem;
}
.info-card-value {
  font-size: 1.45rem;
  font-weight: 800;
  line-height: 1.2;
  color: var(--slate-900);
  margin-bottom: .25rem;
}
.info-card-unit {
  font-size: .9rem;
  font-weight: 500;
  color: var(--slate-500);
}
.info-card-note {
  font-size: .72rem;
  color: var(--slate-400);
  line-height: 1.4;
}

/* カウントダウン数値 */
.countdown-num {
  font-size: 1.45rem;
  font-weight: 800;
  color: #f43f5e;
}

/* ============================================================
   Chart Cards
============================================================ */
.chart-card {
  background: var(--slate-50);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  margin: 1.5rem 0 2rem;
  box-shadow: var(--shadow-sm);
}

.chart-card-header {
  margin-bottom: 1.2rem;
}
.chart-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--slate-800);
  display: flex;
  align-items: center;
  gap: .5rem;
  margin-bottom: .3rem;
}
.chart-title i { color: var(--blue-500); }

.chart-subtitle {
  font-size: .82rem;
  color: var(--slate-500);
}

.chart-wrap {
  position: relative;
  width: 100%;
}

.chart-wrap canvas {
  width: 100% !important;
}

.chart-note {
  font-size: .78rem;
  color: var(--slate-400);
  margin-top: .8rem;
  display: flex;
  align-items: flex-start;
  gap: .4rem;
  line-height: 1.5;
}
.chart-note i { color: var(--blue-300); flex-shrink: 0; margin-top: .15rem; }

/* ドーナツグラフ + 凡例レイアウト */
.chart-donut-layout {
  display: flex;
  align-items: center;
  gap: 2rem;
  flex-wrap: wrap;
}
.chart-wrap--donut {
  flex: 0 0 280px;
  max-width: 280px;
}

@media (max-width: 640px) {
  .chart-wrap--donut {
    flex: 1 1 100%;
    max-width: 100%;
    height: 240px !important;
  }
}

/* Chart Legend */
.chart-legend {
  list-style: none;
  flex: 1;
  min-width: 160px;
  display: flex;
  flex-direction: column;
  gap: .7rem;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: .6rem;
  font-size: .9rem;
}
.legend-dot {
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--legend-color);
  flex-shrink: 0;
}
.legend-label {
  flex: 1;
  color: var(--slate-700);
  font-weight: 500;
}
.legend-value {
  font-weight: 700;
  color: var(--slate-800);
  font-size: .95rem;
}

/* ============================================================
   Summary Box（まとめ）
============================================================ */
.summary-box {
  background: linear-gradient(135deg, var(--blue-900), var(--blue-700));
  border-radius: var(--radius-md);
  padding: 1.5rem 1.8rem;
  margin-top: 2.5rem;
  color: #fff;
}
.summary-box-header {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 1.1rem;
  display: flex;
  align-items: center;
  gap: .5rem;
  color: #bfdbfe;
}
.summary-box-header i { color: #60a5fa; }

.summary-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: .75rem;
}
.summary-list li {
  display: flex;
  gap: .6rem;
  font-size: .93rem;
  line-height: 1.6;
  color: rgba(255,255,255,.9);
}
.summary-list li i {
  color: var(--blue-300);
  flex-shrink: 0;
  margin-top: .25rem;
  font-size: .8rem;
}
.summary-list strong { color: #fcd34d; }

/* ============================================================
   Sidebar
============================================================ */
.article-sidebar {
  position: sticky;
  top: calc(var(--header-h) + 1.5rem);
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.sidebar-card {
  background: var(--white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  border: 1px solid var(--slate-200);
}

.sidebar-card-header {
  background: var(--blue-900);
  color: #fff;
  font-size: .88rem;
  font-weight: 700;
  padding: .75rem 1.1rem;
  display: flex;
  align-items: center;
  gap: .5rem;
}
.sidebar-card-header i { color: var(--blue-300); }

/* 目次 */
.toc-list {
  padding: 1rem 1.1rem;
  margin: 0;
  list-style: none;
  counter-reset: toc-counter;
  display: flex;
  flex-direction: column;
  gap: .15rem;
}
.toc-list ol {
  list-style: none;
  padding-left: 1rem;
  margin-top: .1rem;
}

.toc-link {
  display: block;
  font-size: .85rem;
  color: var(--slate-600);
  text-decoration: none;
  padding: .3rem .4rem;
  border-radius: var(--radius-sm);
  transition: background var(--transition), color var(--transition);
  line-height: 1.45;
}
.toc-link:hover {
  background: var(--blue-50);
  color: var(--blue-700);
}
.toc-link--sub {
  font-size: .8rem;
  color: var(--slate-400);
}
.toc-link--sub:hover { color: var(--blue-600); }
.toc-link.active {
  background: var(--blue-50);
  color: var(--blue-700);
  font-weight: 600;
}

/* 記事情報 */
.article-info-list {
  padding: 1rem 1.1rem;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: .5rem .9rem;
  font-size: .85rem;
  align-items: start;
}
.article-info-list dt {
  color: var(--slate-400);
  font-weight: 600;
  font-size: .78rem;
  text-transform: uppercase;
  letter-spacing: .05em;
  padding-top: .15rem;
}
.article-info-list dd {
  color: var(--slate-700);
  line-height: 1.5;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  padding: .25rem .7rem;
  border-radius: 100px;
  font-size: .78rem;
  font-weight: 600;
}
.badge--commodity {
  background: rgba(245,158,11,.15);
  color: #b45309;
  border: 1px solid rgba(245,158,11,.3);
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: .35rem;
}
.tag {
  background: var(--slate-100);
  color: var(--slate-600);
  border-radius: 100px;
  padding: .2rem .6rem;
  font-size: .76rem;
  font-weight: 500;
}

/* 関連記事リスト */
.related-list {
  list-style: none;
  padding: .8rem;
  display: flex;
  flex-direction: column;
  gap: .6rem;
}
.related-item {
  display: flex;
  gap: .75rem;
  align-items: flex-start;
  padding: .7rem .8rem;
  border-radius: var(--radius-sm);
  transition: background var(--transition);
  text-decoration: none;
  cursor: default;
}
.related-item--coming {
  background: var(--slate-50);
  opacity: .75;
}
.related-icon {
  flex-shrink: 0;
  width: 2rem; height: 2rem;
  background: var(--slate-200);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  color: var(--slate-400);
  font-size: .85rem;
}
.related-title {
  font-size: .85rem;
  font-weight: 600;
  color: var(--slate-700);
  margin-bottom: .2rem;
  line-height: 1.35;
}
.related-status {
  font-size: .75rem;
  color: var(--slate-400);
  display: flex;
  align-items: center;
  gap: .3rem;
}

/* ============================================================
   Article Bottom Nav
============================================================ */
.article-nav-bottom {
  display: flex;
  justify-content: flex-start;
  padding-bottom: 3rem;
}

.article-nav-btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .75rem 1.5rem;
  border-radius: var(--radius-md);
  font-size: .9rem;
  font-weight: 600;
  text-decoration: none;
  transition: all var(--transition);
}
.article-nav-btn--back {
  background: var(--white);
  color: var(--blue-700);
  border: 2px solid var(--blue-200);
  box-shadow: var(--shadow-sm);
}
.article-nav-btn--back:hover {
  background: var(--blue-50);
  border-color: var(--blue-400);
  transform: translateX(-3px);
}

/* ============================================================
   Scroll fade-up（記事ページ用）
============================================================ */
.article-fade {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .55s ease, transform .55s ease;
}
.article-fade.visible {
  opacity: 1;
  transform: none;
}

/* ============================================================
   Responsive
============================================================ */
.sp-only { display: none; }
@media (max-width: 640px) {
  .sp-only { display: inline; }
  .article-hero { padding: 2rem 0 1.8rem; }
  .article-hero-title { font-size: 1.45rem; }
}