/* ── Post-Mortem Library case studies ── */

/* When the related-card grid is used on the index page (inside .section-inner),
   don't constrain it to 1080px — let it fill the container. */
.section-alt .cs-related-grid{max-width:none}

/* Tags */
.cs-tags{display:flex;align-items:center;gap:8px;margin-bottom:16px;flex-wrap:wrap}
.cs-tag{font-size:10px;font-weight:600;text-transform:uppercase;letter-spacing:0.08em;padding:3px 8px;border-radius:4px}
.cs-tag--domain{background:var(--primary-light);color:var(--primary)}
.cs-tag--type{background:var(--gray-100);color:var(--gray-500)}
.cs-tag--source{background:var(--accent-light);color:var(--accent)}
.cs-back{font-size:13px;color:var(--gray-400);text-decoration:none}
.cs-back:hover{color:var(--gray-600)}

/* Reading time pill (in meta strip) */
.cs-read-pill{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:999px;background:var(--gray-50);border:1px solid var(--gray-100);font-size:11px;font-weight:600;color:var(--gray-500);letter-spacing:0.02em}
.cs-read-pill svg{color:var(--primary)}

/* Meta strip */
.cs-meta{display:flex;flex-wrap:wrap;gap:24px;margin-top:32px;padding-top:24px;border-top:1px solid var(--gray-200)}
.cs-meta-item{flex-shrink:0}
.cs-meta-label{font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:0.05em;color:var(--gray-400);margin-bottom:4px}
.cs-meta-value{font-size:14px;font-weight:600;color:var(--gray-700)}

/* Body prose */
.cs-body{font-size:17px;line-height:1.7;color:var(--gray-700)}
.cs-body p{margin-bottom:20px}

/* Impact stats */
.cs-impact{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--gray-200);border:1px solid var(--gray-200);border-radius:var(--radius-lg);overflow:hidden}
.cs-impact-item{background:#fff;padding:28px 24px}
.cs-impact-number{font-family:'Instrument Serif',serif;font-size:36px;line-height:1;margin-bottom:8px}
.cs-impact-desc{font-size:13px;color:var(--gray-500);line-height:1.5}

/* Pull quote */
.cs-quote{margin-top:24px;border-left:3px solid var(--gray-300);padding-left:20px}
.cs-quote-text{font-size:15px;color:var(--gray-600);line-height:1.6;font-style:italic}
.cs-quote-attr{font-size:13px;color:var(--gray-400);margin-top:8px}

/* Chat annotation */
.cs-chat{background:#fff;border:1px solid var(--gray-200);border-radius:var(--radius-lg);overflow:hidden}
.cs-chat-header{padding:12px 20px;border-bottom:1px solid var(--gray-100);display:flex;align-items:center;gap:10px;background:var(--gray-50)}
.cs-chat-avatar{width:28px;height:28px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;flex-shrink:0}
.cs-chat-avatar--bot{background:var(--primary);color:#fff}
.cs-chat-avatar--user{background:var(--gray-300);color:var(--gray-600)}
.cs-chat-name{font-size:13px;font-weight:600;color:var(--gray-700)}
.cs-chat-time{font-size:11px;color:var(--gray-400);margin-left:auto}
.cs-chat-row{padding:20px;display:flex;gap:12px}
.cs-chat-bubble{border-radius:var(--radius-md);padding:12px 16px;max-width:80%;font-size:14px;line-height:1.6}
.cs-chat-bubble--user{background:var(--gray-50);color:var(--gray-700)}
.cs-chat-bubble--bot{background:var(--primary-light);color:var(--gray-700);position:relative}
.cs-chat-badge{position:absolute;top:-10px;right:12px;background:var(--red);color:#fff;font-size:10px;font-weight:700;padding:2px 8px;border-radius:10px;text-transform:uppercase;letter-spacing:0.05em}
.cs-chat-hl{background:rgba(200,56,40,0.12);border-radius:3px;padding:1px 4px;border-bottom:2px solid var(--red)}
.cs-chat-key{padding:16px 20px;border-top:1px solid var(--gray-100);background:var(--gray-50);font-size:12px;color:var(--gray-500);line-height:1.6}

/* Criteria cards */
.cs-criteria{display:flex;flex-direction:column;gap:16px}
.cs-criterion{background:#fff;border:1px solid var(--gray-200);border-radius:var(--radius-lg);padding:24px 28px}
.cs-criterion-inner{display:flex;align-items:start;gap:16px}
.cs-criterion-id{flex-shrink:0;font-family:'JetBrains Mono',monospace;font-size:11px;font-weight:600;color:var(--primary);background:var(--primary-light);padding:4px 8px;border-radius:4px;letter-spacing:0.03em;text-decoration:none;transition:background 0.2s}
.cs-criterion-id:hover{background:var(--primary);color:#fff;text-decoration:none}
.cs-criterion-title{font-size:16px;font-weight:600;color:var(--gray-900);margin-bottom:8px}
.cs-criterion-desc{font-size:14px;color:var(--gray-500);line-height:1.55;margin-bottom:12px}
.cs-criterion-instruction{background:var(--gray-50);border-radius:var(--radius-sm);padding:12px 16px;border:1px solid var(--gray-100)}
.cs-criterion-instruction-label{font-size:12px;color:var(--gray-400);margin-bottom:4px;font-weight:600;text-transform:uppercase;letter-spacing:0.05em}
.cs-criterion-instruction-text{font-size:13px;color:var(--gray-700);line-height:1.5;font-family:'Inter',sans-serif}

/* Interactive demo */
.cs-demo{background:var(--gray-900);color:#fff;background-image:radial-gradient(rgba(255,255,255,0.03) 1px,transparent 1px);background-size:20px 20px}
.cs-demo .section-label::before{background:var(--primary-light) !important}
.cs-demo-label{color:var(--primary-light) !important}
.cs-demo-input{width:100%;background:rgba(255,255,255,0.05);border:1px solid rgba(255,255,255,0.15);border-radius:var(--radius-md);padding:16px;color:#fff;font-family:'Inter',sans-serif;font-size:14px;line-height:1.6;resize:vertical;transition:border-color 0.2s}
.cs-demo-input:focus{border-color:var(--primary);outline:none}
.cs-demo-btn-run{background:var(--primary);color:#fff;border:none;padding:10px 20px;border-radius:var(--radius-sm);font-size:13px;font-weight:600;cursor:pointer;font-family:inherit;transition:background 0.2s}
.cs-demo-btn-run:hover{background:var(--primary-dark)}
.cs-demo-btn-run:disabled{opacity:0.5;cursor:default}
.cs-demo-btn-sample{background:transparent;color:rgba(255,255,255,0.5);border:1px solid rgba(255,255,255,0.15);padding:10px 20px;border-radius:var(--radius-sm);font-size:13px;font-weight:500;cursor:pointer;font-family:inherit;transition:all 0.2s}
.cs-demo-btn-sample:hover{color:rgba(255,255,255,0.8);border-color:rgba(255,255,255,0.3)}
.cs-demo-verdict{padding:16px 20px;border-radius:var(--radius-md);margin-bottom:16px;display:flex;align-items:center;gap:12px}
.cs-demo-verdict--pass{background:rgba(45,122,95,0.15);border:1px solid rgba(45,122,95,0.3)}
.cs-demo-verdict--fail{background:rgba(200,56,40,0.15);border:1px solid rgba(200,56,40,0.3)}
.cs-demo-flag{background:rgba(255,255,255,0.05);border:1px solid rgba(255,255,255,0.1);border-radius:var(--radius-md);padding:16px 20px}
.cs-demo-flag-id{flex-shrink:0;font-family:'JetBrains Mono',monospace;font-size:10px;font-weight:600;color:var(--accent);background:rgba(200,132,42,0.15);padding:3px 7px;border-radius:4px;letter-spacing:0.03em}
.cs-demo-flag-reason{font-size:13px;color:rgba(255,255,255,0.8);line-height:1.5}

/* Source citations */
.cs-sources{background:var(--gray-50);border:1px solid var(--gray-100);border-radius:var(--radius-lg);padding:24px 28px}
.cs-sources-label{font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:0.08em;color:var(--gray-400);margin-bottom:16px}
.cs-sources-list{display:flex;flex-wrap:wrap;gap:12px}
.cs-source{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--gray-600);background:#fff;border:1px solid var(--gray-200);border-radius:var(--radius-sm);padding:8px 14px;text-decoration:none;transition:all 0.2s}
.cs-source:hover{border-color:var(--primary);color:var(--primary);text-decoration:none}

/* Index cards */
.cs-card-link{text-decoration:none;color:inherit;display:block}
.cs-card{background:#fff;border:1px solid var(--gray-200);border-radius:var(--radius-lg);overflow:hidden;transition:transform 0.2s var(--ease),box-shadow 0.2s var(--ease);height:100%;display:flex;flex-direction:column}
.cs-card:hover{transform:translateY(-3px);box-shadow:0 8px 24px -8px rgba(0,0,0,0.12)}
.cs-card-body{padding:24px 24px 0;flex:1}
.cs-card-footer{margin-top:auto;padding:16px 24px;border-top:1px solid var(--gray-100);display:flex;justify-content:space-between;align-items:center}
.cs-card-meta{font-size:11px;color:var(--gray-400)}
.cs-card-cta{font-size:13px;font-weight:600;color:var(--primary)}
.cs-card-title{font-family:'Instrument Serif',serif;font-size:24px;line-height:1.2;color:var(--gray-900);margin-bottom:12px;font-weight:400}
.cs-card-desc{font-size:13px;color:var(--gray-500);line-height:1.55;margin-bottom:16px}

/* Method grid */
.cs-method{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--gray-200);border:1px solid var(--gray-200);border-radius:var(--radius-lg);overflow:hidden;margin-top:32px}
.cs-method-item{background:#fff;padding:32px 28px}
.cs-method-num{font-family:'Instrument Serif',serif;font-size:32px;color:var(--primary);line-height:1;margin-bottom:16px;font-style:italic}

/* Upcoming card */
.cs-upcoming{padding:16px 20px;border:1px dashed var(--gray-200);border-radius:var(--radius-md);display:flex;justify-content:space-between;align-items:center}
.cs-upcoming-title{font-size:14px;font-weight:600;color:var(--gray-600)}
.cs-upcoming-desc{font-size:12px;color:var(--gray-400)}
.cs-upcoming-soon{font-size:11px;color:var(--gray-400);font-style:italic}

/* Hero stats */
.cs-stats{display:grid;grid-template-columns:1fr 1fr;gap:32px;margin-bottom:48px}
.cs-stat-num{font-family:'Instrument Serif',serif;font-size:42px;line-height:1;margin-bottom:12px}
.cs-stat-desc{font-size:14px;color:var(--gray-500);line-height:1.5}

/* Anti-portfolio quote */
.cs-manifesto{border-left:3px solid var(--primary);padding-left:20px}
.cs-manifesto-text{font-family:'Instrument Serif',serif;font-size:22px;line-height:1.4;color:var(--gray-900);font-style:italic}

/* Timeline */
.cs-timeline{position:relative;padding-left:32px;margin-top:32px}
.cs-timeline::before{content:'';position:absolute;left:12px;top:8px;bottom:8px;width:2px;background:var(--gray-200)}
.cs-timeline-item{position:relative;padding-bottom:28px}
.cs-timeline-item:last-child{padding-bottom:0}
.cs-timeline-dot{position:absolute;left:-26px;top:4px;width:12px;height:12px;border-radius:50%;background:#fff;border:2px solid var(--gray-300);z-index:1}
.cs-timeline-dot--active{border-color:var(--primary);background:var(--primary)}
.cs-timeline-dot--fail{border-color:var(--red);background:var(--red)}
.cs-timeline-date{font-family:'JetBrains Mono',monospace;font-size:11px;font-weight:600;color:var(--gray-400);letter-spacing:0.03em;margin-bottom:4px}
.cs-timeline-event{font-size:14px;color:var(--gray-700);line-height:1.55}
.cs-timeline-event strong{color:var(--gray-900);font-weight:600}

/* Impact bar chart */
.cs-impact-bar{margin-top:32px}
.cs-impact-bar-item{margin-bottom:20px}
.cs-impact-bar-label{font-size:13px;font-weight:600;color:var(--gray-700);margin-bottom:8px;display:flex;justify-content:space-between;align-items:baseline}
.cs-impact-bar-value{font-family:'Instrument Serif',serif;font-size:22px;color:var(--gray-900)}
.cs-impact-bar-track{height:8px;background:var(--gray-100);border-radius:4px;overflow:hidden}
.cs-impact-bar-fill{height:100%;border-radius:4px;transition:width 0.8s var(--ease)}
.cs-impact-bar-fill--red{background:var(--red)}
.cs-impact-bar-fill--primary{background:var(--primary)}
.cs-impact-bar-fill--accent{background:var(--accent)}
.cs-impact-bar-desc{font-size:12px;color:var(--gray-400);margin-top:4px}

/* Source outlet strip */
.cs-outlets{display:flex;flex-wrap:wrap;gap:16px;align-items:center;margin-top:20px}
.cs-outlet{font-family:'Instrument Serif',serif;font-size:18px;color:var(--gray-400);letter-spacing:-0.01em;transition:color 0.2s}
.cs-outlet:hover{color:var(--gray-700)}

/* Section divider */
.cs-divider{height:1px;background:var(--gray-100);margin:0;border:none}

/* Mobile responsive */
@media(max-width:640px){
  .cs-impact,.cs-method{grid-template-columns:1fr}
  .cs-stats{grid-template-columns:1fr}
  .cs-chat-bubble{max-width:95%}
  .cs-demo-btn-run,.cs-demo-btn-sample{width:100%;text-align:center}
  .cs-timeline{padding-left:20px}
  .cs-timeline-line{left:10px}
  .cs-timeline-dot{width:10px;height:10px;left:-15px}
  .cs-related-grid{grid-template-columns:1fr !important}
  .cs-takeaway{padding:24px 22px}
  .cs-share-row{flex-direction:column;align-items:flex-start}
  .cs-share-btn{width:100%;justify-content:center}
  .cs-meta-strip{gap:16px !important}
}

/* ───────────────────────────────────────────
   Key Takeaway callout — prominent post-mortem summary
   Use after the "impact" / before the "fix" sections
─────────────────────────────────────────── */
.cs-takeaway{
  position:relative;
  background:linear-gradient(180deg,var(--primary-light) 0%,#fff 100%);
  border:1px solid var(--primary);
  border-left:4px solid var(--primary);
  border-radius:var(--radius-lg);
  padding:32px 36px;
  margin:48px 0;
  box-shadow:0 1px 0 rgba(13,92,75,0.04);
}
.cs-takeaway-label{
  display:inline-flex;align-items:center;gap:8px;
  font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:0.1em;
  color:var(--primary);
  margin-bottom:12px;
}
.cs-takeaway-label::before{
  content:'';display:inline-block;width:8px;height:8px;border-radius:50%;
  background:var(--primary);box-shadow:0 0 0 4px rgba(13,92,75,0.18);
}
.cs-takeaway-title{
  font-family:'Instrument Serif',serif;
  font-size:28px;line-height:1.2;color:var(--gray-900);
  font-weight:400;margin-bottom:12px;letter-spacing:-0.01em;
}
.cs-takeaway-text{
  font-size:16px;line-height:1.65;color:var(--gray-700);
  max-width:60ch;
}
.cs-takeaway-text strong{color:var(--gray-900);font-weight:600}
.cs-takeaway-actions{
  display:flex;flex-wrap:wrap;gap:10px;margin-top:20px;padding-top:20px;
  border-top:1px dashed rgba(13,92,75,0.25);
}

/* ───────────────────────────────────────────
   Social share row — fixed placement under impact
─────────────────────────────────────────── */
.cs-share-row{
  display:flex;align-items:center;gap:12px;flex-wrap:wrap;
  margin-top:32px;padding:20px 24px;
  background:var(--gray-50);
  border:1px solid var(--gray-100);
  border-radius:var(--radius-md);
}
.cs-share-label{
  font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:0.08em;
  color:var(--gray-500);margin-right:4px;
}
.cs-share-btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 14px;border-radius:var(--radius-sm);
  background:#fff;border:1px solid var(--gray-200);
  font-size:13px;font-weight:500;color:var(--gray-700);
  text-decoration:none;
  transition:all 0.18s var(--ease);
  cursor:pointer;font-family:inherit;
}
.cs-share-btn:hover{
  border-color:var(--primary);color:var(--primary);
  transform:translateY(-1px);
  box-shadow:0 4px 12px -4px rgba(13,92,75,0.18);
  text-decoration:none;
}
.cs-share-btn svg{width:14px;height:14px;flex-shrink:0}
.cs-share-btn--x:hover{color:#000;border-color:#000}
.cs-share-btn--linkedin:hover{color:#0A66C2;border-color:#0A66C2}
.cs-share-btn--copy:hover{color:var(--primary);border-color:var(--primary)}
.cs-share-btn--copy.copied{background:var(--primary);color:#fff;border-color:var(--primary)}

/* ───────────────────────────────────────────
   Related case studies — bottom of page
─────────────────────────────────────────── */
.cs-related{
  border-top:1px solid var(--gray-100);
  background:linear-gradient(180deg,#fff 0%,var(--gray-50) 100%);
}
.cs-related-inner{padding:64px 48px}
.cs-related-head{margin-bottom:32px;max-width:760px;margin-left:auto;margin-right:auto}
.cs-related-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:20px;
  max-width:1080px;margin:0 auto;
}
.cs-related-card{
  position:relative;
  background:#fff;border:1px solid var(--gray-200);
  border-radius:var(--radius-lg);
  padding:24px 24px 20px;
  text-decoration:none;color:inherit;
  display:flex;flex-direction:column;gap:12px;
  transition:transform 0.22s var(--ease),box-shadow 0.22s var(--ease),border-color 0.22s var(--ease);
  overflow:hidden;
  height:100%;
}
.cs-related-card::after{
  content:'→';position:absolute;top:20px;right:20px;
  font-size:16px;color:var(--gray-300);
  transition:transform 0.22s var(--ease),color 0.22s var(--ease);
}
.cs-related-card:hover{
  transform:translateY(-4px);
  box-shadow:0 12px 28px -10px rgba(13,92,75,0.16),0 2px 6px rgba(0,0,0,0.04);
  border-color:var(--primary);
  text-decoration:none;
}
.cs-related-card:hover::after{transform:translateX(4px);color:var(--primary)}
.cs-related-tags{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:4px}
.cs-related-tag{
  font-size:10px;font-weight:600;text-transform:uppercase;letter-spacing:0.06em;
  padding:2px 7px;border-radius:3px;
  background:var(--primary-light);color:var(--primary);
}
.cs-related-tag--alt{background:var(--gray-100);color:var(--gray-500)}
.cs-related-title{
  font-family:'Instrument Serif',serif;
  font-size:20px;line-height:1.25;color:var(--gray-900);
  font-weight:400;letter-spacing:-0.005em;margin:0;
}
.cs-related-desc{
  font-size:13px;color:var(--gray-500);line-height:1.55;margin:0;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.cs-related-meta{
  margin-top:auto;padding-top:12px;
  display:flex;justify-content:space-between;align-items:center;
  font-size:11px;color:var(--gray-400);
}

/* ───────────────────────────────────────────
   Entrance animations — reveal on scroll
   Opt-in via .cs-reveal on a section
─────────────────────────────────────────── */
.cs-reveal{opacity:0;transform:translateY(14px);transition:opacity 0.55s var(--ease),transform 0.55s var(--ease)}
.cs-reveal.is-visible{opacity:1;transform:translateY(0)}
@media(prefers-reduced-motion:reduce){
  .cs-reveal{opacity:1;transform:none;transition:none}
  .cs-related-card,.cs-share-btn{transition:none}
  .cs-related-card:hover,.cs-share-btn:hover{transform:none}
}