/* ═══════════════════════════════════════════════════
   ActionScale · case studies shared stylesheet
   Used by: /case-studies/index.html + every individual case study page
═══════════════════════════════════════════════════ */
:root{
  --cs-red:#C8102E;
  --cs-red-dark:#9e0c23;
  --cs-red-soft:#fef2f2;
  --cs-ink:#0a0e1a;
  --cs-ink-2:#1f2937;
  --cs-muted:#475569;
  --cs-dim:#6b7280;
  --cs-faint:#9ca3af;
  --cs-line:#eef0f3;
  --cs-line-2:#e5e7eb;
  --cs-bg:#fff;
  --cs-cream:#fafbfc;
  --cs-green:#15803d;
  --cs-green-bg:#ecfdf5;
  --cs-green-line:#a7f3d0;
  --cs-blue:#1e3a8a;
  --cs-blue-bg:#eff6ff;
  --cs-amber:#b45309;
  --cs-amber-bg:#fef3c7;
  --cs-mono:'JetBrains Mono','SF Mono',Menlo,Consolas,monospace;
  --cs-display:'Bebas Neue','Helvetica Neue',Arial,sans-serif;
  --cs-font:'Outfit',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body.cs-body{margin:0;font-family:var(--cs-font);color:var(--cs-ink);background:#fff;-webkit-font-smoothing:antialiased;line-height:1.5}

/* Top scroll progress */
.cs-progress{position:fixed;top:0;left:0;right:0;height:2px;z-index:200;pointer-events:none}
.cs-progress-bar{height:100%;width:0;background:linear-gradient(90deg,var(--cs-red),#ff5e7a);transition:width .12s linear;box-shadow:0 0 10px rgba(200,16,46,.45)}

/* Reveal-on-scroll */
.cs-reveal{opacity:0;transform:translateY(22px);transition:opacity .7s cubic-bezier(.22,.61,.36,1),transform .7s cubic-bezier(.22,.61,.36,1)}
.cs-reveal.in{opacity:1;transform:none}
.cs-stagger > *{opacity:0;transform:translateY(18px);transition:opacity .65s cubic-bezier(.22,.61,.36,1),transform .65s cubic-bezier(.22,.61,.36,1)}
.cs-stagger.in > *{opacity:1;transform:none}
.cs-stagger.in > *:nth-child(1){transition-delay:.04s}
.cs-stagger.in > *:nth-child(2){transition-delay:.12s}
.cs-stagger.in > *:nth-child(3){transition-delay:.20s}
.cs-stagger.in > *:nth-child(4){transition-delay:.28s}
.cs-stagger.in > *:nth-child(5){transition-delay:.36s}
.cs-stagger.in > *:nth-child(6){transition-delay:.44s}
.cs-stagger.in > *:nth-child(7){transition-delay:.52s}
.cs-stagger.in > *:nth-child(8){transition-delay:.60s}

/* Section primitives */
.cs-sec{padding:88px 24px;background:#fff;position:relative}
.cs-sec.alt{background:var(--cs-cream)}
.cs-sec.alt::before,.cs-sec.alt::after{content:"";position:absolute;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,#e5e7eb,transparent)}
.cs-sec.alt::before{top:0}.cs-sec.alt::after{bottom:0}
.cs-wrap{max-width:1080px;margin:0 auto}
.cs-narrow{max-width:760px;margin:0 auto}

/* Eyebrow + headlines */
.cs-eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:11px;letter-spacing:2px;text-transform:uppercase;color:var(--cs-red);font-weight:800;margin-bottom:14px;padding-bottom:7px;position:relative}
.cs-eyebrow::after{content:"";position:absolute;left:0;bottom:0;width:42px;height:2px;background:var(--cs-red);transform:scaleX(0);transform-origin:left;transition:transform .8s cubic-bezier(.22,.61,.36,1) .15s}
.cs-reveal.in .cs-eyebrow::after,.in .cs-eyebrow::after{transform:scaleX(1)}
.cs-eyebrow.center{justify-content:center;display:inline-flex}
.cs-eyebrow.center::after{left:50%;transform:translateX(-50%) scaleX(0);transform-origin:center}
.cs-reveal.in .cs-eyebrow.center::after{transform:translateX(-50%) scaleX(1)}
.cs-h{font-family:var(--cs-display);font-weight:400;line-height:1.04;letter-spacing:.5px;font-size:clamp(36px,5vw,58px);color:var(--cs-ink);margin:0 0 16px}
.cs-h-md{font-family:var(--cs-display);font-weight:400;line-height:1.05;letter-spacing:.4px;font-size:clamp(26px,3.4vw,40px);color:var(--cs-ink);margin:0 0 14px}
.cs-h-sm{font-size:21px;font-weight:800;color:var(--cs-ink);line-height:1.32;letter-spacing:.05px;margin:24px 0 10px}
.cs-lede{font-size:17px;line-height:1.7;color:var(--cs-muted);margin:0}
.cs-body{font-size:16px;line-height:1.75;color:var(--cs-muted);margin:0 0 16px}
.cs-body strong{color:var(--cs-ink);font-weight:700}
.cs-body a{color:var(--cs-red);font-weight:700;text-decoration:none;border-bottom:1px solid rgba(200,16,46,.25);transition:border-color .2s}
.cs-body a:hover{border-color:var(--cs-red)}
.cs-list{margin:8px 0 18px;padding:0;list-style:none}
.cs-list li{position:relative;padding:6px 0 6px 24px;font-size:15.5px;line-height:1.65;color:var(--cs-muted)}
.cs-list li::before{content:"";position:absolute;left:0;top:14px;width:14px;height:2px;background:var(--cs-red);border-radius:1px}
.cs-list li strong{color:var(--cs-ink);font-weight:700}

/* Pills (industry / city / engagement) */
.cs-pill{display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:999px;font-size:11px;font-weight:800;letter-spacing:.6px;text-transform:uppercase;line-height:1.2}
.cs-pill.red{background:var(--cs-red-soft);color:var(--cs-red)}
.cs-pill.green{background:var(--cs-green-bg);color:var(--cs-green);border:1px solid var(--cs-green-line)}
.cs-pill.blue{background:var(--cs-blue-bg);color:var(--cs-blue)}
.cs-pill.dim{background:#f3f4f6;color:var(--cs-dim)}
.cs-pill-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px}

/* HERO (case study page) */
.cs-hero{padding:96px 24px 72px;background:linear-gradient(180deg,#fff 0%,var(--cs-cream) 100%);border-bottom:1px solid var(--cs-line)}
.cs-hero-back{display:inline-flex;align-items:center;gap:6px;color:var(--cs-dim);font-size:13px;text-decoration:none;margin-bottom:18px;font-weight:600;transition:color .2s,gap .2s}
.cs-hero-back:hover{color:var(--cs-red);gap:10px}
.cs-hero-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:48px;align-items:start}
.cs-hero-h{font-family:var(--cs-display);font-weight:400;line-height:1.02;letter-spacing:.5px;font-size:clamp(32px,4.8vw,54px);color:var(--cs-ink);margin:14px 0 18px}
.cs-hero-h .accent{color:var(--cs-red)}
.cs-hero-lede{font-size:17.5px;line-height:1.7;color:var(--cs-muted);margin:0 0 22px;max-width:580px}
.cs-hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:6px;align-items:center;font-family:var(--cs-mono);font-size:11.5px;color:var(--cs-faint);letter-spacing:.3px}
.cs-hero-meta .sep{width:1px;height:12px;background:#e5e7eb}

/* HERO results card (dark) */
.cs-results-card{background:linear-gradient(135deg,#0d1322,#0a0e1a);color:#fff;border:1px solid rgba(255,255,255,.08);border-radius:18px;padding:24px 24px 22px;position:relative;overflow:hidden;box-shadow:0 24px 56px -28px rgba(10,14,26,.5)}
.cs-results-card::before{content:"";position:absolute;left:0;right:0;top:0;height:2px;background:linear-gradient(90deg,transparent,var(--cs-red),#22c55e,var(--cs-red),transparent);background-size:200% 100%;animation:csBorder 7s linear infinite;pointer-events:none}
@keyframes csBorder{from{background-position:0 0}to{background-position:200% 0}}
.cs-results-tag{font-family:var(--cs-mono);font-size:10px;letter-spacing:1.8px;text-transform:uppercase;color:rgba(255,255,255,.55);font-weight:800;margin:0 0 14px}
.cs-results-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.cs-result{display:flex;flex-direction:column;gap:4px}
.cs-result-l{font-family:var(--cs-mono);font-size:9.5px;letter-spacing:1.4px;text-transform:uppercase;color:rgba(255,255,255,.5);font-weight:700}
.cs-result-v{font-family:var(--cs-display);font-size:30px;line-height:.95;letter-spacing:.5px;color:#86efac;font-variant-numeric:tabular-nums}
.cs-result-v.white{color:#fff}
.cs-result-v.red{color:#ff8096}
.cs-results-foot{margin-top:18px;padding-top:14px;border-top:1px dashed rgba(255,255,255,.10);font-family:var(--cs-mono);font-size:11px;color:rgba(255,255,255,.55);letter-spacing:.3px;display:flex;align-items:center;gap:8px}
.cs-results-foot .dot{width:6px;height:6px;border-radius:50%;background:#22c55e;box-shadow:0 0 6px rgba(34,197,94,.55)}

/* Result-cards row (3-up green) */
.cs-result-row{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:8px}
.cs-result-card{background:var(--cs-green-bg);border:1px solid var(--cs-green-line);border-radius:14px;padding:22px 22px 18px;text-align:left}
.cs-result-card .v{font-family:var(--cs-display);font-size:30px;line-height:1;letter-spacing:.5px;color:var(--cs-green);margin-bottom:6px}
.cs-result-card .l{font-size:12.5px;color:var(--cs-muted);font-weight:600;letter-spacing:.2px;text-transform:uppercase}

/* AI tools grid */
.cs-tools{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:6px}
.cs-tool{background:#fff;border:1px solid var(--cs-line);border-radius:12px;padding:16px 16px 14px;display:flex;flex-direction:column;gap:6px;transition:border-color .2s,transform .2s,box-shadow .2s}
.cs-tool:hover{border-color:var(--cs-red);transform:translateY(-2px);box-shadow:0 12px 22px -14px rgba(200,16,46,.18)}
.cs-tool .n{font-family:var(--cs-mono);font-size:10px;letter-spacing:1.6px;text-transform:uppercase;color:var(--cs-red);font-weight:800}
.cs-tool .h{font-size:14px;font-weight:800;color:var(--cs-ink);line-height:1.35;letter-spacing:.05px}
.cs-tool .p{font-size:12.5px;color:var(--cs-muted);line-height:1.55;margin:0}

/* Timeline table */
.cs-table{width:100%;border-collapse:collapse;margin-top:18px;background:#fff;border:1px solid var(--cs-line);border-radius:14px;overflow:hidden}
.cs-table thead th{background:#f9fafb;text-align:left;padding:13px 18px;font-size:11px;letter-spacing:1.3px;text-transform:uppercase;color:var(--cs-dim);font-weight:800;border-bottom:1px solid var(--cs-line-2)}
.cs-table tbody td{padding:14px 18px;border-bottom:1px solid var(--cs-line);font-size:14.5px;color:var(--cs-muted);line-height:1.55;vertical-align:top}
.cs-table tbody tr:last-child td{border-bottom:0}
.cs-table tbody tr:hover{background:#fafbfc}
.cs-table td.wk{font-family:var(--cs-mono);color:var(--cs-red);font-weight:800;font-size:12.5px;letter-spacing:.3px;white-space:nowrap;width:100px}
.cs-table td.win{color:var(--cs-green);font-weight:700;font-size:13.5px}

/* Quote box */
.cs-quote{background:#fff;border:1px solid var(--cs-line);border-radius:18px;padding:30px 30px 26px;position:relative;text-align:left;box-shadow:0 14px 34px -22px rgba(10,14,26,.18)}
.cs-quote::before{content:"\201C";position:absolute;left:18px;top:6px;font-family:Georgia,serif;font-size:64px;line-height:1;color:var(--cs-red);font-weight:700}
.cs-quote-body{font-size:18px;line-height:1.55;color:var(--cs-ink);font-weight:500;letter-spacing:-.05px;margin:0 0 16px;padding-left:42px}
.cs-quote-foot{padding-left:42px;font-family:var(--cs-mono);font-size:12px;color:var(--cs-dim);letter-spacing:.3px;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.cs-quote-foot b{color:var(--cs-ink);font-weight:800}

/* Final CTA band */
.cs-cta{background:linear-gradient(135deg,#0d1322,#0a0e1a);color:#fff;padding:64px 24px;text-align:center;position:relative;overflow:hidden}
.cs-cta::before,.cs-cta::after{content:"";position:absolute;left:0;right:0;height:2px;pointer-events:none}
.cs-cta::before{top:0;background:linear-gradient(90deg,transparent,var(--cs-red),#22c55e,transparent)}
.cs-cta::after{bottom:0;background:linear-gradient(90deg,transparent,#22c55e,var(--cs-red),transparent)}
.cs-cta-h{font-family:var(--cs-display);font-size:clamp(30px,4.4vw,46px);line-height:1.04;letter-spacing:.5px;color:#fff;margin:0 0 12px;font-weight:400}
.cs-cta-p{font-size:15.5px;color:rgba(255,255,255,.68);max-width:560px;margin:0 auto 22px;line-height:1.65}
.cs-cta-btns{display:inline-flex;align-items:center;gap:12px;flex-wrap:wrap;justify-content:center}
.cs-btn{display:inline-flex;align-items:center;gap:10px;padding:15px 26px;border-radius:12px;font-weight:800;font-size:14.5px;letter-spacing:.3px;text-decoration:none;line-height:1;transition:transform .15s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease}
.cs-btn.primary{background:var(--cs-red);color:#fff;box-shadow:0 12px 28px -10px rgba(200,16,46,.55)}
.cs-btn.primary:hover{background:var(--cs-red-dark);transform:translateY(-2px);box-shadow:0 18px 36px -10px rgba(200,16,46,.7)}
.cs-btn.secondary{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.25)}
.cs-btn.secondary:hover{border-color:#fff;background:rgba(255,255,255,.06)}

/* Related case studies */
.cs-related{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:10px}
.cs-related-card{background:#fff;border:1px solid var(--cs-line-2);border-radius:14px;padding:20px;display:flex;flex-direction:column;gap:10px;text-decoration:none;color:inherit;transition:border-color .2s,transform .2s,box-shadow .2s}
.cs-related-card:hover{border-color:var(--cs-red);transform:translateY(-3px);box-shadow:0 14px 30px -16px rgba(200,16,46,.18)}
.cs-related-card .h{font-size:15px;font-weight:800;color:var(--cs-ink);line-height:1.35;margin:0}
.cs-related-card .m{font-family:var(--cs-mono);font-size:11px;color:var(--cs-faint);letter-spacing:.3px;margin-top:auto}
.cs-related-card .arr{font-size:13px;color:var(--cs-red);font-weight:700;margin-top:4px}

/* ═══ INDEX (listing) page ═══ */
.cs-index-hero{padding:96px 24px 64px;text-align:center;background:linear-gradient(180deg,#fff,var(--cs-cream));border-bottom:1px solid var(--cs-line)}
.cs-index-hero .cs-eyebrow{justify-content:center;display:inline-flex;margin-bottom:18px}
.cs-index-hero .cs-eyebrow::after{left:50%;transform:translateX(-50%) scaleX(0);transform-origin:center}
.cs-index-hero.in .cs-eyebrow::after{transform:translateX(-50%) scaleX(1)}
.cs-index-h{font-family:var(--cs-display);font-weight:400;line-height:1.02;letter-spacing:.5px;font-size:clamp(40px,6vw,72px);color:var(--cs-ink);margin:0 0 18px}
.cs-index-h .accent{color:var(--cs-red)}
.cs-index-lede{font-size:17px;line-height:1.7;color:var(--cs-muted);max-width:660px;margin:0 auto}

/* Insights bar (small stat strip on index) */
.cs-insights{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--cs-line);border:1px solid var(--cs-line-2);border-radius:18px;overflow:hidden;margin-top:34px}
.cs-insight{background:#fff;padding:22px 18px;text-align:left}
.cs-insight .v{font-family:var(--cs-display);font-size:32px;color:var(--cs-ink);letter-spacing:.5px;line-height:.95;font-variant-numeric:tabular-nums}
.cs-insight .v .sfx{color:var(--cs-red);font-size:.7em}
.cs-insight .l{font-size:12px;color:var(--cs-muted);margin-top:4px;line-height:1.4}

/* Search + filter bar */
.cs-toolbar{display:flex;flex-wrap:wrap;gap:14px;align-items:center;margin:36px 0 24px;padding:14px 16px;background:#fff;border:1px solid var(--cs-line-2);border-radius:14px;box-shadow:0 6px 22px -16px rgba(10,14,26,.12)}
.cs-search{flex:1;min-width:240px;position:relative;display:flex;align-items:center}
.cs-search svg{position:absolute;left:14px;width:16px;height:16px;color:var(--cs-faint);pointer-events:none}
.cs-search input{flex:1;width:100%;padding:11px 14px 11px 38px;border-radius:10px;border:1.5px solid var(--cs-line-2);background:#fafbfc;font-size:14.5px;font-family:inherit;color:var(--cs-ink);outline:none;transition:border-color .2s,background .2s}
.cs-search input:focus{border-color:var(--cs-red);background:#fff}
.cs-search input::placeholder{color:var(--cs-faint)}
.cs-filters{display:flex;flex-wrap:wrap;gap:6px}
.cs-chip{padding:7px 13px;border-radius:999px;border:1.5px solid var(--cs-line-2);background:#fff;font-size:12.5px;font-weight:700;color:var(--cs-muted);cursor:pointer;transition:all .15s ease;font-family:inherit;line-height:1.2}
.cs-chip:hover{border-color:var(--cs-ink);color:var(--cs-ink)}
.cs-chip.active{background:var(--cs-red);border-color:var(--cs-red);color:#fff;box-shadow:0 6px 16px -8px rgba(200,16,46,.45)}
.cs-count{font-family:var(--cs-mono);font-size:11.5px;color:var(--cs-faint);letter-spacing:.3px;margin-left:auto}

/* Card grid (listing) */
.cs-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:18px}
.cs-card{display:flex;flex-direction:column;gap:14px;background:#fff;border:1px solid var(--cs-line-2);border-radius:18px;padding:26px 26px 22px;text-decoration:none;color:inherit;transition:border-color .2s,transform .2s,box-shadow .2s;position:relative;overflow:hidden}
.cs-card::before{content:"";position:absolute;left:0;right:0;top:0;height:2px;background:linear-gradient(90deg,transparent,var(--cs-red),transparent);opacity:0;transition:opacity .25s}
.cs-card:hover{border-color:var(--cs-red);transform:translateY(-3px);box-shadow:0 18px 36px -16px rgba(200,16,46,.18)}
.cs-card:hover::before{opacity:1}
.cs-card-h{font-size:18.5px;font-weight:800;color:var(--cs-ink);line-height:1.35;letter-spacing:.05px;margin:0}
.cs-card-p{font-size:13.5px;color:var(--cs-muted);line-height:1.6;margin:0}
.cs-card-result{display:flex;align-items:center;gap:10px;background:var(--cs-green-bg);border:1px solid var(--cs-green-line);border-radius:10px;padding:11px 14px;font-size:13px;color:var(--cs-green);font-weight:700}
.cs-card-result b{font-family:var(--cs-mono);color:var(--cs-ink);font-weight:800;font-size:14px}
.cs-card-foot{display:flex;align-items:center;justify-content:space-between;margin-top:auto;padding-top:8px;font-size:13px;color:var(--cs-red);font-weight:700}
.cs-card-foot .arr{transition:transform .2s ease}
.cs-card:hover .cs-card-foot .arr{transform:translateX(4px)}
.cs-empty{padding:52px 20px;text-align:center;color:var(--cs-muted);font-size:14.5px}

/* Insight bullets section on index */
.cs-insight-block{background:var(--cs-cream);border:1px solid var(--cs-line);border-radius:18px;padding:30px 28px;margin-top:36px}
.cs-insight-block-h{font-family:var(--cs-display);font-size:24px;letter-spacing:.4px;color:var(--cs-ink);margin:0 0 14px;font-weight:400}
.cs-insight-list{margin:0;padding:0;list-style:none;display:grid;grid-template-columns:1fr 1fr;gap:10px 22px}
.cs-insight-list li{position:relative;padding:8px 0 8px 22px;font-size:14.5px;line-height:1.55;color:var(--cs-muted)}
.cs-insight-list li::before{content:"";position:absolute;left:0;top:14px;width:12px;height:2px;background:var(--cs-red);border-radius:1px}
.cs-insight-list li b{color:var(--cs-ink);font-weight:700}

/* Responsive */
@media (max-width:880px){
  .cs-hero{padding:72px 18px 56px}
  .cs-hero-grid{grid-template-columns:1fr;gap:28px}
  .cs-sec{padding:60px 18px}
  .cs-result-row,.cs-tools,.cs-related{grid-template-columns:1fr}
  .cs-results-grid{grid-template-columns:1fr 1fr}
  .cs-insights{grid-template-columns:1fr 1fr}
  .cs-insight-list{grid-template-columns:1fr}
  .cs-table thead{display:none}
  .cs-table tbody td{display:block;padding:8px 18px;border-bottom:0;font-size:14px}
  .cs-table tbody tr{border-bottom:1px solid var(--cs-line);padding:12px 0}
  .cs-table td.wk{padding-top:14px;width:auto}
  .cs-toolbar{flex-direction:column;align-items:stretch}
  .cs-count{margin-left:0;text-align:right}
}
@media (max-width:560px){
  .cs-index-hero{padding:64px 16px 48px}
  .cs-sec{padding:48px 16px}
  .cs-quote-body{padding-left:0;font-size:16.5px}
  .cs-quote-foot{padding-left:0}
  .cs-quote::before{display:none}
  .cs-results-grid{grid-template-columns:1fr 1fr}
  .cs-insights{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){
  .cs-reveal,.cs-stagger > *,.cs-progress-bar,.cs-results-card::before,.cs-eyebrow::after{transition:none !important;animation:none !important;opacity:1 !important;transform:none !important}
}