/* Case studies: listing (/case-studies) and detail (/case-studies/<slug>) */

.cs-svg{display:block;width:100%;height:100%}

/* hero "project at a glance" */
.cs-facts dl{display:grid;gap:0;margin:0}
.cs-facts dl>div{padding:12px 0;border-top:1px solid var(--on-dark-line)}
.cs-facts dl>div:first-child{border-top:0;padding-top:0}
.cs-facts dt{color:var(--on-dark-muted);font-size:.78rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase}
.cs-facts dd{margin:4px 0 0;color:var(--on-dark);font-weight:600;line-height:1.4}
.cs-facts dd a{color:var(--teal);text-decoration:none}
.cs-facts dd a:hover{text-decoration:underline;text-underline-offset:.2em}

/* tag pill */
.cs-tag{display:inline-block;align-self:flex-start;padding:.3rem .75rem;border-radius:999px;background:var(--tint);color:var(--cobalt-deep);font-weight:700;font-size:.78rem;letter-spacing:.08em;text-transform:uppercase}

/* ---------- listing ---------- */
.cs-hero-card{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;box-shadow:0 18px 50px rgba(15,23,42,.07)}
.cs-hero-vis{display:block;background:var(--night);min-height:320px}
.cs-hero-vis .cs-svg{height:100%;object-fit:cover}
.cs-hero-body{display:flex;flex-direction:column;align-items:flex-start;gap:16px;padding:clamp(24px,3.5vw,44px)}
.cs-hero-body h3{font-size:clamp(1.5rem,2.4vw,2.1rem);line-height:1.15}
.cs-hero-body h3 a,.cs-card h3 a{text-decoration:none}
.cs-hero-body h3 a:hover,.cs-card h3 a:hover{color:var(--cobalt-deep)}
.cs-hero-body>p{color:var(--muted)}
.cs-meta{display:flex;flex-wrap:wrap;gap:10px 28px}
.cs-meta li{font-size:.95rem;color:var(--ink);font-weight:600}
.cs-meta b{display:block;color:var(--muted);font-size:.74rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;margin-bottom:2px}

.cs-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(290px,1fr));gap:22px;margin-top:26px}
.cs-card{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;transition:transform .22s,box-shadow .22s,border-color .22s}
.cs-card:hover{transform:translateY(-4px);box-shadow:0 20px 44px rgba(15,23,42,.1);border-color:var(--cobalt)}
.cs-card-vis{display:block;aspect-ratio:3/2;background:var(--night);overflow:hidden}
.cs-card-vis .cs-svg{transition:transform .5s cubic-bezier(.22,1,.36,1)}
.cs-card:hover .cs-card-vis .cs-svg{transform:scale(1.04)}
.cs-card-body{display:flex;flex-direction:column;gap:12px;padding:24px 26px 28px;flex:1}
.cs-card-body h3{font-size:1.5rem}
.cs-card-sub{color:var(--ink)!important;font-weight:600;font-size:1rem;line-height:1.35}
.cs-card-body>p{color:var(--muted);font-size:.98rem}
.cs-svc{font-size:.92rem}
.cs-svc a{color:var(--cobalt-deep);font-weight:600;text-decoration:underline;text-decoration-color:var(--teal);text-underline-offset:.2em}
.cs-card .more{margin-top:auto}

/* ---------- detail ---------- */
.cs-intro{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);gap:clamp(28px,5vw,64px);align-items:center}
.cs-intro-copy h2{margin-bottom:6px}
.cs-intro-copy p:not(.eyebrow-lt){color:var(--muted);margin-top:16px;font-size:1.08rem}
.cs-intro-vis{border-radius:var(--r-lg);overflow:hidden;box-shadow:0 24px 60px rgba(7,11,20,.22);border:1px solid rgba(34,230,211,.25);aspect-ratio:3/2}

.cs-challenge-sec{padding-top:0}
.cs-challenge{position:relative;background:var(--night);color:var(--on-dark);border-radius:var(--r-lg);padding:clamp(28px,4.5vw,56px);overflow:hidden;isolation:isolate}
.cs-challenge::before{content:"";position:absolute;z-index:-1;right:-90px;top:-90px;width:320px;height:320px;border-radius:50%;border:1px solid rgba(34,230,211,.25);box-shadow:0 0 0 50px rgba(34,230,211,.05),0 0 0 100px rgba(34,230,211,.03)}
.cs-challenge .eyebrow-lt{color:var(--teal)}.cs-challenge .eyebrow-lt span{background:var(--teal)}
.cs-challenge h2{color:var(--on-dark);font-size:clamp(1.6rem,3vw,2.4rem);max-width:24ch}
.cs-challenge p:not(.eyebrow-lt){margin-top:18px;max-width:68ch;color:var(--on-dark-muted);font-size:1.1rem;line-height:1.7}

.cs-feats{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px}
.cs-feat{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:30px 28px 28px;display:flex;flex-direction:column;gap:10px;transition:border-color .2s,transform .2s}
.cs-feat:hover{border-color:var(--cobalt);transform:translateY(-3px)}
.cs-num{font:800 2.4rem/1 var(--display);color:var(--cobalt);opacity:.9;letter-spacing:-.04em}
.cs-feat h3{font-size:1.25rem}
.cs-feat p{color:var(--muted);font-size:1rem}
.cs-feat .ticks{margin-top:6px;gap:8px}
.cs-feat .ticks li{font-size:.96rem}

.cs-shots{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px}
.cs-shots figure{margin:0;border-radius:var(--r-md);overflow:hidden;border:1px solid var(--line);background:var(--surface)}
.cs-shots img{display:block;width:100%;height:auto}

.cs-stack-sec{padding-block:clamp(24px,3vw,40px)}
.cs-stack-wrap{display:flex;flex-wrap:wrap;gap:20px 48px;align-items:center;justify-content:space-between;padding:clamp(24px,3vw,36px);border:1px solid var(--line);border-radius:var(--r-lg);background:var(--paper)}
.cs-stack-wrap h2{font-size:clamp(1.6rem,2.8vw,2.2rem)}
.cs-chips{max-width:640px;gap:10px}
.cs-chips li{font-size:1rem;padding:.5rem 1rem;font-weight:600}

.cs-results{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px}
.cs-result{background:linear-gradient(160deg,var(--tint),transparent 70%),var(--surface);border:1px solid var(--line);border-top:3px solid var(--cobalt);border-radius:var(--r-md);padding:26px;display:flex;flex-direction:column;gap:8px}
.cs-result .i{width:30px;height:30px;padding:6px;border-radius:50%;background:var(--cobalt);color:#fff;stroke-width:2.6}
.cs-result h3{font-size:1.2rem;margin-top:6px}
.cs-result p{color:var(--muted);font-size:1rem}
.cs-conclusion{margin-top:32px;max-width:78ch;padding-left:22px;border-left:3px solid var(--teal);color:var(--muted);font-size:1.12rem;line-height:1.75}

.cs-pager{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.cs-pg{display:flex;flex-direction:column;gap:2px;padding:22px 26px;border:1px solid var(--line);border-radius:var(--r-md);text-decoration:none;transition:border-color .2s,background .2s}
.cs-pg:hover{border-color:var(--cobalt);background:var(--tint)}
.cs-pg small{color:var(--muted);font-size:.76rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase}
.cs-pg b{font:700 1.35rem/1.2 var(--display);letter-spacing:-.02em}
.cs-pg span{color:var(--cobalt-deep);font-weight:600;font-size:.92rem}
.cs-pg.next{text-align:right}
.cs-pager-sec{padding-bottom:clamp(24px,3vw,40px)}

@media (max-width:900px){
  .cs-hero-card,.cs-intro{grid-template-columns:minmax(0,1fr)}
  .cs-hero-vis{min-height:0;aspect-ratio:3/2}
}
@media (max-width:560px){
  .cs-pager{grid-template-columns:1fr}
  .cs-pg.next{text-align:left}
  .cs-stack-wrap{flex-direction:column;align-items:flex-start}
}
@media (prefers-reduced-motion:reduce){
  .cs-card,.cs-feat,.cs-card-vis .cs-svg{transition:none}
  .cs-card:hover,.cs-feat:hover{transform:none}
}

.cs-note{margin-top:18px;max-width:78ch;color:var(--muted);font-size:.95rem;font-style:italic}