/* ===== Article Detail Pages ===== */

/* Article body prose constrained for readability, left-aligned with header */
.article-body p,
.article-body h2,
.article-body h3,
.article-body blockquote,
.article-body ul,
.article-body ol,
.article-body .article-list{
  max-width: 780px;
}
.article-body .article-figure,
.article-body .article-figure-pair{
  max-width: 400px;
}
.article-body .article-figure.figure-wide,
.article-body .article-figure-pair.figure-wide{
  max-width: 600px;
}

/* Breadcrumb */
.article-breadcrumb{
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 20px;
}
.article-breadcrumb a{
  color: var(--accent-bright);
  font-weight: 600;
}
.article-breadcrumb .sep{
  opacity: 0.4;
}

/* Article header */
.article-header{
  padding: 60px 0 40px;
}
.article-header h1{
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  max-width: 800px;
}
.article-desc{
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 700px;
  margin: 12px 0 20px;
  line-height: 1.6;
}
.article-meta{
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 14px;
}
.article-meta-item{
  display: inline-flex;
  align-items: center;
}
.article-tags{
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 4px;
}

/* Article body */
.article-body{
  padding: 20px 0 50px;
}
.article-body h2{
  font-size: 1.5rem;
  margin: 2.2rem 0 0.8rem;
  color: var(--text);
}
.article-body h2:first-child{
  margin-top: 0;
}
.article-body h3{
  font-size: 1.15rem;
  margin: 1.8rem 0 0.6rem;
  color: var(--text);
}
.article-body p{
  color: var(--text-secondary);
  line-height: 1.7;
  font-size: 1rem;
}
.article-body p.lead{
  font-size: 1.15rem;
  color: var(--text);
  line-height: 1.6;
  margin-bottom: 1.5rem;
}
.article-body strong{
  color: var(--text);
  font-weight: 700;
}
.article-body blockquote{
  margin: 1.5rem 0;
  padding: 16px 24px;
  border-left: 3px solid var(--accent);
  background: var(--accent-subtle);
  border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--text);
  font-style: italic;
  font-size: 1.05rem;
}

/* Article lists */
.article-list{
  margin: 1rem 0 1.5rem;
  padding-left: 20px;
  list-style: none;
}
.article-list li{
  position: relative;
  padding-left: 18px;
  margin-bottom: 10px;
  color: var(--text-secondary);
  line-height: 1.6;
}
.article-list li::before{
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

/* Image placeholders */
.article-image-caption{
  margin: 2rem 0;
}
.article-image-placeholder{
  background: linear-gradient(135deg, rgba(15,23,42,0.6) 0%, rgba(20,184,166,0.08) 50%, rgba(139,92,246,0.06) 100%);
  border: 1px solid rgba(45,212,191,0.12);
  border-radius: var(--radius);
  padding: 48px 28px;
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.88rem;
  line-height: 1.5;
  position: relative;
  overflow: hidden;
}
.article-image-placeholder::before{
  content: '';
  position: absolute;
  top: 14px;
  right: 16px;
  width: 28px;
  height: 28px;
  border: 2px solid rgba(45,212,191,0.2);
  border-radius: 6px;
  opacity: 0.5;
}
.article-image-placeholder::after{
  content: '';
  position: absolute;
  top: 20px;
  right: 22px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(45,212,191,0.2);
}

/* KPI grid for case studies */
.kpi-grid{
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin: 1.5rem 0;
}
.kpi-item{
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
}
.kpi-label{
  font-weight: 700;
  color: var(--accent-bright);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin-bottom: 6px;
}
.kpi-detail{
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.5;
}

/* Result highlight callout */
.result-callout{
  background: linear-gradient(135deg, rgba(20,184,166,0.08) 0%, rgba(139,92,246,0.06) 100%);
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 20px 24px;
  margin: 1.5rem 0;
}
.result-callout .result-number{
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent-bright);
  line-height: 1;
  margin-bottom: 6px;
}
.result-callout .result-label{
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* ===== Prev / Next Navigation ===== */
.article-footer{
  padding: 0 0 40px;
}
.article-nav{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  border-top: 1px solid var(--border);
  padding-top: 28px;
}
.article-nav-link{
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg-card);
  transition: border-color .25s, transform .15s;
  text-decoration: none !important;
}
.article-nav-link:hover{
  border-color: rgba(45,212,191,0.25);
  transform: translateY(-1px);
  color: inherit;
}
.article-nav-link.next{
  text-align: right;
}
.article-nav-label{
  font-size: 0.8rem;
  color: var(--accent-bright);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
.article-nav-title{
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text);
  line-height: 1.3;
}

/* ===== Filter Bar (Hub Pages) ===== */
.filter-bar{
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 28px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
}
.filter-tag{
  display: inline-flex;
  align-items: center;
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-secondary);
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all .2s;
}
.filter-tag:hover{
  border-color: var(--border-hover);
  color: var(--text);
  background: rgba(255,255,255,0.03);
}
.filter-tag.active{
  background: var(--accent-subtle);
  border-color: rgba(45,212,191,0.3);
  color: var(--accent-bright);
  font-weight: 600;
}

/* Card tags row */
.card-tags{
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  margin-top: 10px;
}
.tag-sm{
  font-size: 0.72rem;
  padding: 3px 8px;
}

/* Card article variant */
.card-article{
  display: flex;
  flex-direction: column;
}
.card-article .title{
  flex-grow: 1;
}

/* ===== Responsive ===== */
@media (max-width: 700px){
  .article-header{
    padding: 40px 0 24px;
  }
  .article-nav{
    grid-template-columns: 1fr;
  }
  .article-nav-link.next{
    text-align: left;
  }
  .kpi-grid{
    grid-template-columns: 1fr;
  }
}

/* ===== Actual Article Images ===== */
.article-figure{
  margin: 2rem 0;
}
.article-figure img{
  max-width: 100%;
  height: auto;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  display: block;
}
.article-figure figcaption{
  margin-top: 8px;
  font-size: 0.82rem;
  color: var(--muted);
  line-height: 1.5;
  text-align: left;
  font-style: italic;
}
/* Side-by-side image pair */
.article-figure-pair{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin: 2rem 0;
}
/* Matched-height pair: shorter image stretches to match taller, minimal crop */
.article-figure-pair.pair-matched{
  align-items: stretch;
}
.article-figure-pair.pair-matched .article-figure{
  display: flex;
  flex-direction: column;
}
.article-figure-pair.pair-matched .article-figure figcaption{
  flex-shrink: 0;
}
.article-figure-pair.pair-matched img{
  width: 100%;
  flex: 1;
  object-fit: cover;
  object-position: top center;
}
.article-figure-pair img{
  max-width: 100%;
  height: auto;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  display: block;
}
.article-figure-pair .article-figure{
  max-width: none;
}
@media (max-width: 600px){
  .article-figure-pair{
    grid-template-columns: 1fr;
  }
}