/* ============================================================
   CLUSTER ARTICLE STYLES — slide-theme/assets/css/cluster.css
   ============================================================ */

.cluster-wrap { padding-top: 64px; background: var(--white); }

/* ── Hero ── */
.article-hero {
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 55%, #162447 100%);
  padding: 60px 24px 64px; position: relative; overflow: hidden;
}
.article-hero::after {
  content: ''; position: absolute; bottom: -2px; left: 0; right: 0; height: 48px;
  background: var(--white); clip-path: ellipse(55% 100% at 50% 100%);
}
.article-hero::before {
  content: ''; position: absolute; top: -40%; right: -10%;
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(37,99,235,0.16) 0%, transparent 70%);
  pointer-events: none;
}
.article-hero-inner { max-width: 900px; margin: 0 auto; position: relative; z-index: 1; }

.breadcrumb {
  display: flex; align-items: center; gap: 6px;
  font-size: 0.78rem; color: rgba(255,255,255,0.55); margin-bottom: 18px; flex-wrap: wrap;
}
.breadcrumb a { color: rgba(255,255,255,0.6); text-decoration: none; }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb-sep { color: rgba(255,255,255,0.3); }
.breadcrumb-current { color: rgba(255,255,255,0.85); font-weight: 500; }

.article-category {
  display: inline-flex; align-items: center; gap: 7px;
  background: rgba(245,158,11,0.18); border: 1px solid rgba(245,158,11,0.3);
  color: var(--accent-light); font-size: 0.75rem; font-weight: 700;
  padding: 5px 14px; border-radius: 100px; letter-spacing: 0.06em;
  text-transform: uppercase; margin-bottom: 16px;
}
.article-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 3.5vw, 2.5rem); font-weight: 800;
  color: var(--white); line-height: 1.3; margin-bottom: 16px;
}
.article-hero h1 em { font-style: normal; color: var(--accent); }
.article-hero-desc {
  color: rgba(255,255,255,0.72); font-size: 1rem;
  max-width: 680px; margin-bottom: 28px; line-height: 1.75;
}
.article-meta { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; }
.meta-item { display: flex; align-items: center; gap: 6px; color: rgba(255,255,255,0.55); font-size: 0.8rem; }
.meta-badge {
  background: rgba(16,185,129,0.2); border: 1px solid rgba(16,185,129,0.3);
  color: #6ee7b7; font-size: 0.72rem; font-weight: 700; padding: 3px 10px; border-radius: 100px;
}

/* ── Layout ── */
.article-body {
  max-width: 1100px; margin: 0 auto;
  display: grid; grid-template-columns: 1fr 300px; gap: 48px;
  padding: 52px 24px 80px; align-items: start;
}

/* ── Content ── */
.article-content { min-width: 0; }
.article-content h2 {
  font-family: var(--font-display); font-weight: 800; font-size: 1.35rem; color: var(--navy);
  margin: 44px 0 14px; padding-bottom: 10px; border-bottom: 2px solid var(--gray-100);
  display: flex; align-items: center; gap: 10px; line-height: 1.35;
}
.article-content h2:first-child { margin-top: 0; }
.article-content h3 {
  font-family: var(--font-display); font-weight: 700; font-size: 1.05rem; color: var(--navy);
  margin: 28px 0 10px;
}
.article-content p { color: var(--gray-700); line-height: 1.85; margin-bottom: 18px; font-size: 0.98rem; }
.article-content strong { color: var(--navy); font-weight: 700; }
.article-content a { color: var(--blue-light); text-decoration: underline; }
.article-content a:hover { color: var(--blue); }

.highlight-box {
  background: linear-gradient(135deg, #eff6ff 0%, #f0f9ff 100%);
  border-left: 4px solid var(--blue-light);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 20px 24px; margin: 28px 0;
}
.highlight-box p { margin: 0; }
.highlight-box-title {
  font-family: var(--font-display); font-weight: 700; font-size: 0.88rem;
  color: var(--blue-light); margin-bottom: 8px; display: flex; align-items: center; gap: 7px;
}
.warning-box {
  background: rgba(245,158,11,0.07); border-left: 4px solid var(--accent);
  border-radius: 0 var(--radius) var(--radius) 0; padding: 18px 22px; margin: 24px 0;
}
.warning-box p { margin: 0; color: var(--gray-700); font-size: 0.93rem; }

.check-list { list-style: none; margin: 14px 0 22px; display: flex; flex-direction: column; gap: 10px; }
.check-list li { display: flex; align-items: flex-start; gap: 10px; font-size: 0.95rem; color: var(--gray-700); line-height: 1.6; }
.check-list li::before { content: '✓'; color: var(--green); font-weight: 700; flex-shrink: 0; margin-top: 2px; }

.num-list { list-style: none; margin: 14px 0 22px; display: flex; flex-direction: column; gap: 14px; }
.num-list li { display: flex; align-items: flex-start; gap: 14px; font-size: 0.95rem; color: var(--gray-700); line-height: 1.6; }
.num-list li .num {
  width: 28px; height: 28px; border-radius: 50%;
  background: linear-gradient(135deg, var(--blue), var(--blue-light));
  color: var(--white); font-weight: 800; font-size: 0.78rem;
  display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;
}

.feature-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin: 22px 0; }
.feature-card { background: var(--gray-50); border: 1.5px solid var(--gray-200); border-radius: var(--radius); padding: 18px 20px; }
.feature-card-icon { font-size: 1.3rem; margin-bottom: 8px; }
.feature-card-title { font-weight: 700; font-size: 0.88rem; color: var(--navy); margin-bottom: 5px; }
.feature-card-desc { font-size: 0.81rem; color: var(--gray-600); line-height: 1.5; }

.compare-table { width: 100%; border-collapse: collapse; margin: 22px 0; font-size: 0.88rem; }
.compare-table th { background: var(--navy); color: var(--white); font-family: var(--font-display); font-weight: 700; padding: 11px 14px; text-align: left; }
.compare-table th:first-child { border-radius: 10px 0 0 0; }
.compare-table th:last-child { border-radius: 0 10px 0 0; }
.compare-table td { padding: 10px 14px; border-bottom: 1px solid var(--gray-100); color: var(--gray-700); }
.compare-table tr:nth-child(even) td { background: var(--gray-50); }

.inline-cta {
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 100%);
  border-radius: var(--radius-lg); padding: 32px; text-align: center; margin: 40px 0;
}
.inline-cta h3 { font-family: var(--font-display); font-weight: 800; font-size: 1.2rem; color: var(--white); margin-bottom: 8px; }
.inline-cta p { color: rgba(255,255,255,0.7); font-size: 0.88rem; margin-bottom: 18px; }
.inline-cta .btn-primary { display: inline-flex; }

.internal-links { background: var(--gray-50); border: 1.5px solid var(--gray-200); border-radius: var(--radius-lg); padding: 26px; margin: 40px 0 0; }
.internal-links-title { font-family: var(--font-display); font-weight: 800; font-size: 1rem; color: var(--navy); margin-bottom: 14px; display: flex; align-items: center; gap: 8px; }
.internal-links-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.internal-link-item {
  display: flex; align-items: center; gap: 10px;
  background: var(--white); border: 1.5px solid var(--gray-200);
  border-radius: 10px; padding: 11px 14px; text-decoration: none; color: inherit; transition: all 0.2s;
}
.internal-link-item:hover { border-color: var(--blue-light); box-shadow: var(--shadow); transform: translateX(3px); color: inherit; text-decoration: none; }
.internal-link-emoji { font-size: 1.1rem; flex-shrink: 0; }
.internal-link-text { font-weight: 600; font-size: 0.82rem; color: var(--navy); line-height: 1.3; }
.internal-link-arrow { margin-left: auto; color: var(--gray-400); font-size: 0.75rem; }

/* ── Sidebar ── */
.article-sidebar { position: sticky; top: 84px; display: flex; flex-direction: column; gap: 20px; }

.toc-box { background: var(--white); border: 1.5px solid var(--gray-200); border-radius: var(--radius-lg); overflow: hidden; }
.toc-header { background: var(--navy); padding: 13px 20px; font-family: var(--font-display); font-weight: 700; font-size: 0.875rem; color: var(--white); display: flex; align-items: center; gap: 8px; }
.toc-list { list-style: none; padding: 12px 0; }
.toc-list li a { display: flex; align-items: flex-start; gap: 8px; padding: 7px 20px; font-size: 0.81rem; color: var(--gray-600); text-decoration: none; transition: all 0.2s; line-height: 1.5; }
.toc-list li a:hover { color: var(--blue-light); background: rgba(37,99,235,0.04); padding-left: 24px; }
.toc-num { flex-shrink: 0; font-weight: 700; color: var(--blue-light); font-size: 0.7rem; min-width: 16px; margin-top: 2px; }

.sidebar-cta { background: linear-gradient(160deg, var(--navy) 0%, var(--navy-light) 100%); border-radius: var(--radius-lg); padding: 24px 20px; text-align: center; }
.sidebar-cta-icon { font-size: 2rem; margin-bottom: 10px; }
.sidebar-cta h3 { font-family: var(--font-display); font-weight: 800; font-size: 0.95rem; color: var(--white); margin-bottom: 7px; }
.sidebar-cta p { color: rgba(255,255,255,0.65); font-size: 0.78rem; margin-bottom: 16px; line-height: 1.5; }
.sidebar-cta .btn-primary { width: 100%; justify-content: center; font-size: 0.82rem; padding: 11px 14px; }
.sidebar-cta-divider { border: none; border-top: 1px solid rgba(255,255,255,0.1); margin: 12px 0; }
.sidebar-contact-item { display: flex; align-items: center; gap: 8px; color: rgba(255,255,255,0.6); font-size: 0.77rem; text-decoration: none; padding: 4px 0; transition: color 0.2s; }
.sidebar-contact-item:hover { color: var(--accent); }

.sidebar-price { background: var(--white); border: 1.5px solid var(--gray-200); border-radius: var(--radius-lg); overflow: hidden; }
.sidebar-price-header { background: linear-gradient(135deg, var(--blue), var(--blue-light)); padding: 13px 20px; font-family: var(--font-display); font-weight: 700; font-size: 0.875rem; color: var(--white); }
.sidebar-price-body { padding: 14px 20px; }
.price-row { display: flex; justify-content: space-between; align-items: center; padding: 8px 0; border-bottom: 1px solid var(--gray-100); font-size: 0.82rem; }
.price-row:last-child { border-bottom: none; }
.price-row-label { color: var(--gray-600); }
.price-row-value { font-family: var(--font-display); font-weight: 700; color: var(--navy); }
.price-row-value.highlight { color: var(--blue-light); }

/* admin bar offset */
.admin-bar .article-sidebar { top: calc(84px + 32px); }
@media (max-width: 782px) { .admin-bar .article-sidebar { top: calc(84px + 46px); } }

/* ── Responsive ── */
@media (max-width: 900px) {
  .article-body { grid-template-columns: 1fr; }
  .article-sidebar { position: static; }
  .internal-links-grid { grid-template-columns: 1fr; }
  .feature-grid { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .article-hero { padding: 44px 20px 54px; }
  .article-body { padding: 28px 20px 56px; }
  .article-content h2 { font-size: 1.15rem; }
}