/* ==========================================================================
   AI ORCA — case study template ("Spec Rail")
   Shared by every /work/<client>.html page. Chosen by Euan 26 Aug 2026.
   Do not fork this per client — add a modifier class instead.
   ========================================================================== */
:root{
  --bg:#05080f; --bg-2:#080e1a; --panel:#0c1626; --panel-2:#101d31;
  --line:rgba(127,227,245,.16); --line-2:rgba(127,227,245,.32);
  --accent:#18e4f0; --accent-2:#0fa3c4; --accent-soft:#7fe3f5;
  --text:#e7f3f7; --muted:#94acba; --dim:#6e8694;
  --display:'Space Grotesk',sans-serif; --body:'Inter',-apple-system,BlinkMacSystemFont,sans-serif; --mono:'DM Mono',monospace;
  --rail:264px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--body);line-height:1.65;-webkit-font-smoothing:antialiased;overflow-x:hidden}
h1,h2,h3,h4{font-family:var(--display);line-height:1.14;letter-spacing:-.02em;margin:0 0 .5em;color:#fff;font-weight:700}
h1{font-size:clamp(1.9rem,3.8vw,2.7rem)} h2{font-size:clamp(1.35rem,2.6vw,1.85rem)} h3{font-size:1.12rem}
p{margin:0 0 1em} img{max-width:100%}
a{color:var(--accent-soft)}
.eyebrow{font-family:var(--mono);text-transform:uppercase;letter-spacing:3px;font-size:.7rem;color:var(--accent-soft);margin:0 0 12px}
.muted{color:var(--muted)} .dim{color:var(--dim)}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* ---------- top bar ---------- */
.cs-top{position:sticky;top:0;z-index:60;display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:12px 26px;background:rgba(5,8,15,.9);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.cs-top .home{display:flex;align-items:center;gap:11px;text-decoration:none;color:#fff;
  font-family:var(--display);font-weight:700;letter-spacing:2px;font-size:.76rem}
.cs-top .home img{height:26px;width:auto;display:block}
.cs-top nav{display:flex;gap:18px;align-items:center}
.cs-top nav a.back{font-family:var(--display);font-size:.82rem;font-weight:600;text-decoration:none;color:var(--muted)}
.cs-top nav a.back:hover{color:#fff}
@media(max-width:620px){.cs-top nav a.back{display:none}}

.btn{display:inline-block;padding:12px 24px;border-radius:10px;font-family:var(--display);font-weight:700;
  font-size:.9rem;text-decoration:none;cursor:pointer;transition:transform .15s,box-shadow .15s;text-align:center}
.btn-pri{background:var(--accent);color:#04121a;box-shadow:0 8px 26px rgba(24,228,240,.25)}
.btn-pri:hover{transform:translateY(-2px);box-shadow:0 12px 34px rgba(24,228,240,.36)}
.btn-ghost{border:1px solid var(--line-2);color:var(--text);background:rgba(127,227,245,.04)}
.btn-ghost:hover{border-color:var(--accent);background:rgba(24,228,240,.08)}
.btn-sm{padding:9px 17px;font-size:.8rem}

/* ---------- rail layout ---------- */
.cs-rail{display:grid;grid-template-columns:var(--rail) minmax(0,1fr);align-items:start;
  background:linear-gradient(90deg,var(--bg-2) 0 var(--rail),transparent var(--rail))}
@media(max-width:900px){.cs-rail{grid-template-columns:1fr;background:none}}

.cs-side{position:sticky;top:51px;max-height:calc(100vh - 51px);overflow-y:auto;
  padding:32px 24px 34px;border-right:1px solid var(--line);background:var(--bg-2);
  scrollbar-width:thin}
.cs-side::-webkit-scrollbar{width:6px}
.cs-side::-webkit-scrollbar-thumb{background:var(--line);border-radius:3px}
@media(max-width:900px){
  .cs-side{position:static;max-height:none;border-right:0;border-bottom:1px solid var(--line);padding:26px 24px}
}
.cs-side h2.client{font-size:1.15rem;margin:0 0 20px}
.cs-fact{margin-bottom:17px}
.cs-fact .k{font-family:var(--mono);font-size:.62rem;letter-spacing:2px;text-transform:uppercase;color:var(--dim)}
.cs-fact .v{font-family:var(--display);font-weight:600;font-size:.9rem;color:#fff;margin-top:3px;line-height:1.4}
.cs-fact .v.live{color:var(--accent)}
.cs-side .btn{display:block;width:100%;margin-top:6px}

/* section nav + scrollspy */
.cs-side .secnav{border-top:1px solid var(--line);padding-top:15px;margin-top:20px;display:flex;flex-direction:column;gap:1px}
.cs-side .secnav a{font-family:var(--display);font-size:.83rem;font-weight:500;text-decoration:none;color:var(--muted);
  padding:7px 0 7px 12px;border-left:2px solid transparent;transition:.15s}
.cs-side .secnav a:hover{color:#fff}
.cs-side .secnav a.on{color:var(--accent);border-left-color:var(--accent)}
@media(max-width:900px){.cs-side .secnav{display:none}}

/* ---------- body ---------- */
.cs-body{min-width:0}
.cs-sec{padding:46px 40px;border-bottom:1px solid var(--line)}
.cs-sec:last-of-type{border-bottom:0}
.cs-sec.alt{background:var(--bg-2)}
@media(max-width:620px){.cs-sec{padding:36px 22px}}
.cs-sec > .lede{font-size:1.03rem;color:var(--muted);max-width:60ch}
.cs-sec > p{max-width:62ch}

.chips{display:flex;gap:7px;flex-wrap:wrap;margin:16px 0 0}
.chips span{font-size:.73rem;font-family:var(--mono);color:var(--muted);border:1px solid var(--line);border-radius:6px;padding:4px 9px}

figure{margin:26px 0 0}
figure img{width:100%;display:block;border-radius:11px;border:1px solid var(--line)}
figcaption{font-family:var(--mono);font-size:.72rem;color:var(--dim);margin-top:10px;line-height:1.6}

/* before / after */
.ba{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:24px}
@media(max-width:760px){.ba{grid-template-columns:1fr}}
.ba .c{border-radius:14px;padding:22px;border:1px solid var(--line)}
.ba .before{background:rgba(255,255,255,.02)}
.ba .after{background:linear-gradient(150deg,var(--panel),#0a1424);border-color:var(--line-2)}
.ba h4{font-family:var(--mono);font-size:.7rem;letter-spacing:2px;text-transform:uppercase;margin-bottom:13px}
.ba .before h4{color:var(--dim)} .ba .after h4{color:var(--accent-soft)}
.ba ul{list-style:none;margin:0;padding:0}
.ba li{font-size:.9rem;padding:9px 0 9px 24px;position:relative;border-bottom:1px solid rgba(127,227,245,.08);color:var(--muted)}
.ba li:last-child{border-bottom:0}
.ba .before li::before{content:"—";position:absolute;left:0;color:var(--dim)}
.ba .after li::before{content:"\2192";position:absolute;left:0;color:var(--accent)}

/* workstreams */
.streams{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:24px}
@media(max-width:760px){.streams{grid-template-columns:1fr}}
.stream{background:var(--panel);border:1px solid var(--line);border-radius:13px;padding:20px;transition:border-color .18s}
.stream:hover{border-color:var(--line-2)}
.stream .n{font-family:var(--mono);font-size:.7rem;color:var(--accent-soft);letter-spacing:1.5px}
.stream h4{font-family:var(--display);font-size:1rem;color:#fff;margin:7px 0 8px}
.stream p{font-size:.87rem;color:var(--muted);margin:0}

/* highlight panel */
.panel{background:linear-gradient(150deg,#0b1c2c,#0a1424);border:1px solid var(--line-2);border-radius:18px;padding:30px;margin-top:24px}
@media(max-width:620px){.panel{padding:22px}}
.panel > p:last-child{margin-bottom:0}
.pillars{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px;margin-top:20px}
.pillar{background:rgba(255,255,255,.03);border:1px solid var(--line);border-radius:11px;padding:16px}
.pillar b{font-family:var(--display);color:var(--accent);font-size:.98rem;display:block;margin-bottom:3px}
.pillar span{font-size:.82rem;color:var(--muted)}

/* outcomes */
.outs{list-style:none;padding:0;margin:24px 0 0;max-width:66ch}
.outs li{padding:14px 0 14px 30px;border-bottom:1px solid var(--line);position:relative;color:var(--muted);font-size:.94rem}
.outs li:last-child{border-bottom:0}
.outs li::before{content:"";position:absolute;left:2px;top:21px;width:11px;height:11px;border-radius:3px;background:var(--accent);opacity:.85}
.outs b{color:#fff;font-family:var(--display);font-weight:600}

/* quote */
.quote{border-left:2px solid var(--accent);padding:4px 0 4px 20px;margin:26px 0 0;max-width:60ch}
.quote p{font-family:var(--display);font-size:1.08rem;color:#fff;line-height:1.5;margin:0 0 8px}
.quote cite{font-family:var(--mono);font-size:.74rem;color:var(--dim);font-style:normal;letter-spacing:1px}

/* ---------- store badges ---------- */
.stores{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px}
.stores a,.stores span.pending{display:inline-flex;align-items:center;gap:9px;text-decoration:none;
  border:1px solid var(--line-2);border-radius:9px;padding:8px 14px 8px 12px;background:#04070d;
  color:#fff;transition:border-color .15s,transform .15s}
.stores a:hover{border-color:var(--accent);transform:translateY(-1px)}
.stores span.pending{border-color:var(--line);color:var(--dim);background:rgba(255,255,255,.015)}
.stores svg{width:20px;height:20px;flex:none}
.stores .lbl{display:flex;flex-direction:column;line-height:1.15;text-align:left}
.stores .lbl small{font-family:var(--body);font-size:.6rem;letter-spacing:.4px;color:var(--muted);text-transform:uppercase}
.stores .lbl b{font-family:var(--display);font-size:.86rem;font-weight:600;letter-spacing:.2px}
.stores span.pending .lbl b{color:var(--muted)}
.cs-side .stores{flex-direction:column;gap:8px}
.cs-side .stores a,.cs-side .stores span.pending{width:100%}

/* ---------- closing CTA ---------- */
.cs-cta{text-align:center;padding:52px 40px 62px;background:var(--bg-2);border-top:1px solid var(--line)}
@media(max-width:620px){.cs-cta{padding:42px 22px 50px}}
.cs-cta h2{max-width:22ch;margin:0 auto .5em}
.cs-cta p{max-width:54ch;margin:0 auto 22px;color:var(--muted)}
.cs-cta .btns{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}

/* ---------- more work strip ---------- */
.morework{padding:40px;border-top:1px solid var(--line)}
@media(max-width:620px){.morework{padding:32px 22px}}
.morework h3{font-size:1rem;margin-bottom:16px}
.mwgrid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:12px}
.mwgrid a{display:block;text-decoration:none;border:1px solid var(--line);border-radius:11px;overflow:hidden;background:var(--panel);transition:border-color .18s,transform .18s}
.mwgrid a:hover{border-color:var(--line-2);transform:translateY(-2px)}
.mwgrid img{width:100%;height:104px;object-fit:cover;object-position:top;display:block}
.mwgrid .t{padding:12px 14px}
.mwgrid .t b{display:block;font-family:var(--display);font-size:.88rem;color:#fff}
.mwgrid .t span{font-size:.76rem;color:var(--muted)}

footer.cs-foot{padding:28px 24px;text-align:center;color:var(--dim);font-size:.8rem;border-top:1px solid var(--line)}
footer.cs-foot a{color:var(--accent-soft);text-decoration:none}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  .btn,.mwgrid a,.stores a{transition:none}
}

/* ---------- before / after slider (used where a real "before" exists) ---------- */
.ba-slider{position:relative;margin-top:26px;border-radius:12px;overflow:hidden;border:1px solid var(--line);
  user-select:none;touch-action:pan-y;cursor:ew-resize;background:#0a1220}
.ba-slider img{display:block;width:100%;height:auto}
.ba-slider .after-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;
  clip-path:inset(0 0 0 var(--split,50%))}
.ba-slider .handle{position:absolute;top:0;bottom:0;left:var(--split,50%);width:2px;background:var(--accent);
  box-shadow:0 0 18px rgba(24,228,240,.6);pointer-events:none}
.ba-slider .handle::after{content:"";position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);
  width:38px;height:38px;border-radius:50%;background:var(--accent);
  box-shadow:0 4px 18px rgba(0,0,0,.5)}
.ba-slider .handle::before{content:"";position:absolute;top:50%;left:50%;transform:translate(-50%,-50%) rotate(45deg);
  width:11px;height:11px;border-right:2px solid #04121a;border-bottom:2px solid #04121a;z-index:2}
.ba-slider .tag{position:absolute;top:12px;font-family:var(--mono);font-size:.68rem;letter-spacing:2px;
  text-transform:uppercase;background:rgba(3,7,13,.78);border:1px solid var(--line);color:var(--text);
  padding:5px 11px;border-radius:6px;pointer-events:none}
.ba-slider .tag.l{left:12px} .ba-slider .tag.r{right:12px;color:var(--accent-soft)}