/* ===================================================================
   case-synthetic-users.css · Synthetic Users for GEO case study
   Same markup and content as before; look and feel from the design system
   (Figma "Caro Milkez · Design System"). Needs tokens.css and site.css first.
   Sections alternate: dark hero, sand-light, dark, white, dark, sand-light,
   dark, sand-light. The collages carry a cream ground close to sand-light, so
   their sections use sand-light and the images sit without a visible box.
   =================================================================== */

/* Old variable names still used by inline styles in the markup, mapped to the system */
:root{--clay:var(--crimson);--blue:var(--teal);--sky:var(--teal-light);--display:var(--font);--ink:var(--charcoal)}

/* section themes (site.css provides .dark) */
.hero{--bg:var(--charcoal);--fg:var(--white);--fg-2:var(--charcoal-light);--line:var(--line-d);--focus:var(--white);background:var(--bg);color:var(--fg)}
#problem,#solution,#catalogue,#lessons{--fg:var(--charcoal);--fg-2:var(--ink-2);--line:var(--line-l);--pill-hover:var(--charcoal);--pill-hover-fg:var(--white);--focus:var(--crimson-deep);color:var(--fg)}
#problem,#catalogue,#lessons{--bg:var(--sand-light);background:var(--sand-light)!important}
#solution{--bg:var(--white);background:var(--white)!important}
.pad{padding:var(--section-y) 0;position:relative}
section{position:relative;overflow:hidden}
section .wrap{position:relative;z-index:2}

/* type */
h1,h2,h3,h4,h5{font-family:var(--font);font-weight:800;color:inherit}
h2{margin-bottom:var(--space-6)}
.lede{color:var(--fg-2);margin-bottom:var(--space-6)}
em{font-style:normal}

/* section labels: tracked caps, no rule, no numbering */
.eyebrow{margin-bottom:var(--space-5);font-size:var(--fs-tag);font-weight:800;letter-spacing:.12em;text-transform:uppercase;color:var(--fg)}

/* reveal: hidden only when JavaScript runs; reduced motion shows everything */
.js .rv{opacity:0;transform:translateY(26px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.js .rv.in{opacity:1;transform:none}
.parallax{will-change:transform}

/* glows: teal only */
.hero .glow{width:min(80vw,960px);height:min(80vw,960px);top:-30%;right:-22%}
.hero .glow2{position:absolute;z-index:0;border-radius:50%;pointer-events:none;width:min(60vw,680px);height:min(60vw,680px);bottom:-24%;left:-14%;background:radial-gradient(circle,rgba(82,117,111,.24) 0%,rgba(82,117,111,0) 68%)}
.insight .glow{width:min(70vw,760px);height:min(70vw,760px);top:10%;left:-18%}
.value .glow{width:min(60vw,640px);height:min(60vw,640px);background:radial-gradient(circle,rgba(82,117,111,.42) 0%,rgba(82,117,111,0) 68%)!important}

/* ------------------------------------------------------------------
   Section rail (the Rail component): right edge, labels beside the dots
   ------------------------------------------------------------------ */
.railnav{position:fixed;top:50%;right:clamp(14px,2vw,28px);transform:translateY(-50%);z-index:45;display:flex;flex-direction:column;align-items:flex-end;gap:2px}
.railnav a{display:flex;align-items:center;justify-content:flex-end;gap:var(--space-3);min-height:32px;text-decoration:none}
.railnav .rl{font-size:13px;font-weight:700;white-space:nowrap;color:var(--ink-2);opacity:0;transform:translateX(6px);transition:opacity var(--dur-fast) var(--ease),transform var(--dur-fast) var(--ease),color var(--dur-fast) var(--ease)}
.railnav .rd{flex:none;width:8px;height:8px;border-radius:50%;border:1px solid var(--ink-2);transition:background var(--dur-fast) var(--ease),border-color var(--dur-fast) var(--ease),transform var(--dur-fast) var(--ease)}
.railnav a:hover .rl,.railnav a:focus-visible .rl,.railnav a.active .rl{opacity:1;transform:none}
.railnav a.active .rl{color:var(--charcoal)}
.railnav a.active .rd,.railnav a:hover .rd{background:var(--crimson);border-color:var(--crimson);transform:scale(1.25)}
.railnav.on-dark .rl{color:var(--charcoal-light)}
.railnav.on-dark .rd{border-color:var(--charcoal-light)}
.railnav.on-dark a.active .rl{color:var(--white)}
.railnav.on-dark a.active .rd,.railnav.on-dark a:hover .rd{background:var(--crimson);border-color:var(--crimson)}
@media (max-width:1100px){.railnav{display:none}}

/* ------------------------------------------------------------------
   Hero: the collage under a charcoal veil
   ------------------------------------------------------------------ */
.hero{min-height:max(640px,100svh);display:flex;align-items:center;padding:150px 0 110px}
.hero .wrap{width:var(--content)}
.hero .hero-media{position:absolute;inset:0;z-index:0;overflow:hidden;opacity:.38}
.hero .hero-media img{position:absolute;width:100%;height:100%;object-fit:cover;filter:grayscale(1)}
.hero .hero-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,var(--charcoal) 0%,rgba(25,28,35,.45) 45%,var(--charcoal) 100%)}
.hero-meta{display:flex;flex-wrap:wrap;gap:6px 10px;font-size:var(--fs-tag);font-weight:800;letter-spacing:.12em;text-transform:uppercase;color:var(--charcoal-light)}
.hero-meta span:nth-child(2){color:var(--crimson)}
.hero h1{font-size:var(--fs-display);font-weight:900;line-height:.98;letter-spacing:-.04em;margin-top:var(--space-6);max-width:12ch;text-wrap:balance}
.hero h1 em{color:var(--crimson)}
.hero .hero-tagline{font-size:var(--fs-h3);font-weight:800;line-height:1.15;letter-spacing:-.025em;color:var(--white);margin-top:var(--space-6);max-width:28ch}
.hero-sub{font-size:var(--fs-lede-strong);font-weight:700;line-height:1.35;letter-spacing:-.01em;color:var(--fg-2);max-width:50ch;margin-top:var(--space-6)}
.hero-foot{margin-top:var(--space-10)}
.tag{display:inline-flex;align-items:center;min-height:40px;padding:8px 18px;border-radius:var(--r-full);border:1px solid var(--line-d);font-size:15px;font-weight:500;color:var(--charcoal-light)}
.hero .anim{opacity:0;transform:translateY(22px);animation:rise .9s var(--ease) forwards}
.hero .a1{animation-delay:.1s}.hero .a2{animation-delay:.28s}.hero .a3{animation-delay:.46s}.hero .a4{animation-delay:.62s}.hero .a5{animation-delay:.78s}
@keyframes rise{to{opacity:1;transform:none}}

/* ------------------------------------------------------------------
   01 · The Problem (sand-light)
   ------------------------------------------------------------------ */
.challenge .grid{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(40px,6vw,96px);align-items:start}
.quote{position:relative;background:var(--white);border-radius:var(--r-card) var(--r-card) var(--r-card) var(--r-tail);padding:var(--space-10) var(--space-8) var(--space-8);box-shadow:var(--shadow-raised)}
.quote .mk{font-size:84px;font-weight:900;line-height:.6;height:36px;color:var(--crimson)}
.quote p{font-size:var(--fs-quote);font-weight:800;line-height:1.15;letter-spacing:-.03em;color:var(--charcoal);margin:var(--space-2) 0 var(--space-6);max-width:none}
.quote .split{display:flex;gap:var(--space-2);flex-wrap:wrap}
.chip{display:inline-flex;align-items:center;min-height:32px;padding:6px 14px;border-radius:var(--r-full);font-size:14px;font-weight:700;color:var(--charcoal)}
.chip.pos{background:var(--teal-light)}
.chip.neg{background:var(--crimson-light)}
.quote .flat{margin-top:var(--space-5);font-size:var(--fs-caption);line-height:1.5;color:var(--ink-2)}
.quote .flat b{color:var(--charcoal);font-weight:800}
.imgband{margin-top:clamp(40px,6vw,72px)}
.imgslot{position:relative;overflow:hidden;border-radius:var(--r-card);background:transparent!important}
.imgslot.r11{aspect-ratio:1/1}
.imgslot picture,.hero-media picture,#catalogue figure picture,#lessons figure picture{display:contents}
.imgslot img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.frictions{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--space-4);margin-top:var(--space-16)}
.friction{padding:var(--space-7) var(--space-6) var(--space-6);border-radius:var(--r-sm);border:1px solid var(--line-l);transition:border-color var(--dur-slow) var(--ease),background var(--dur-slow) var(--ease)}
.friction:hover{border-color:var(--charcoal);background:var(--white)}
.friction h4{font-size:var(--fs-h3);line-height:1.05;letter-spacing:-.025em;margin-bottom:var(--space-2)}
.friction p{font-size:var(--fs-caption);line-height:1.5}

/* ------------------------------------------------------------------
   02 · The Challenge (dark): four capabilities with line icons
   ------------------------------------------------------------------ */
.insight .head{max-width:64ch}
.scanband{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:clamp(22px,3vw,40px);margin-top:var(--space-16)!important}
.scan .ic{display:grid;place-items:center;width:64px;height:64px;margin-bottom:var(--space-5);border-radius:var(--r-sm);background:rgba(217,221,228,.04);box-shadow:var(--shadow-ring)}
.scan .ic svg{width:40px;height:40px}
.scan .ic svg path{stroke:var(--teal-light)}
.scan .k{font-size:var(--fs-h3);font-weight:800;line-height:1.05;letter-spacing:-.025em;color:var(--white);margin-bottom:var(--space-3)}
.scan p{font-size:var(--fs-caption);line-height:1.55}

/* ------------------------------------------------------------------
   03 · The Solution (white): the pipeline as a vertical timeline (Step pattern)
   ------------------------------------------------------------------ */
.sol .head{max-width:60ch}
.timeline{position:relative;margin-top:var(--space-12);max-width:760px}
.tl-line{position:absolute;left:21.5px;top:22px;bottom:22px;width:1px;background:var(--line-l);overflow:hidden}
.tl-fill{position:absolute;left:0;top:0;width:100%;height:100%;background:var(--crimson);transform:scaleY(0);transform-origin:top}
.tl-item{position:relative;display:grid;grid-template-columns:44px minmax(0,1fr);gap:var(--space-6);align-items:start;padding-bottom:var(--space-10)}
.tl-item:last-child{padding-bottom:0}
.js .tl-item{opacity:0;transform:translateY(28px);transition:opacity .75s var(--ease),transform .75s var(--ease)}
.js .tl-item.in{opacity:1;transform:none}
.tl-dot{position:relative;z-index:2;display:grid;place-items:center;width:44px;height:44px;border-radius:50%;background:var(--bg);border:1.5px solid var(--crimson);color:var(--crimson-deep);font-size:15px;font-weight:800;letter-spacing:.02em;transition:background var(--dur-fast) var(--ease),color var(--dur-fast) var(--ease)}
.tl-item:hover .tl-dot{background:var(--crimson);color:var(--white)}
.tl-card{padding-top:10px}
.tl-card h4{font-size:var(--fs-h3);line-height:1.05;letter-spacing:-.025em;margin-bottom:var(--space-2)}
.tl-card p{font-size:var(--fs-small);line-height:1.6;max-width:62ch}

/* ------------------------------------------------------------------
   04 · Systems design (dark): five decisions
   ------------------------------------------------------------------ */
.quad{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--space-4);margin-top:var(--space-12)}
.seg{position:relative;border-radius:var(--r-card);padding:var(--space-7);background:rgba(217,221,228,.03);box-shadow:var(--shadow-ring);transition:box-shadow var(--dur-base) var(--ease),transform var(--dur-base) var(--ease)}
.seg:hover{box-shadow:inset 0 0 0 1px rgba(226,54,87,.55);transform:translateY(-3px)}
.seg.lev{background:linear-gradient(135deg,rgba(226,54,87,.12),rgba(217,221,228,.03))}
.seg .pct{font-size:var(--fs-h3l);font-weight:800;line-height:1.02;letter-spacing:-.035em;color:var(--white)}
.seg .one{font-size:var(--fs-caption);line-height:1.5;color:var(--charcoal-light);margin-top:var(--space-3)}

/* ------------------------------------------------------------------
   05 · Context aware (sand-light): the road with four context cards
   ------------------------------------------------------------------ */
.serpent{position:relative;display:flex;flex-direction:column;gap:clamp(40px,6vw,74px);margin-top:var(--space-12)}
.sroad{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;z-index:0;overflow:visible}
.sroad-bg{fill:none;stroke:var(--line-l);stroke-width:3;stroke-linecap:round;stroke-linejoin:round}
.sroad-fill{fill:none;stroke:var(--crimson);stroke-width:3;stroke-linecap:round;stroke-linejoin:round}
.snode{position:relative;z-index:1;width:clamp(260px,46%,500px)}
.js .snode{opacity:0;transform:translateY(28px);transition:opacity .75s var(--ease),transform .75s var(--ease)}
.js .snode.in{opacity:1;transform:none}
.snode.left{align-self:flex-start}
.snode.right{align-self:flex-end}
.snode .sdot{position:absolute;top:-20px;left:50%;width:40px;height:40px;margin-left:-20px;visibility:hidden}
.scard{border-radius:var(--r-card);background:var(--white);padding:var(--space-8) var(--space-7) var(--space-6);box-shadow:var(--shadow-raised)}
.scard .i{font-size:13px;font-weight:800;letter-spacing:.12em;color:var(--crimson-deep)}
.scard h5{font-size:var(--fs-h3);font-weight:800;line-height:1.05;letter-spacing:-.025em;margin:var(--space-3) 0 var(--space-2)}
.scard p{font-size:var(--fs-caption);line-height:1.55;color:var(--ink-2)}

/* ------------------------------------------------------------------
   06 · Business outcomes (dark)
   ------------------------------------------------------------------ */
.value .grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(40px,6vw,96px);align-items:start}
.impacts{display:flex;flex-direction:column}
.imp{padding:var(--space-6) 0;border-top:1px solid var(--line-d)}
.imp:last-child{border-bottom:1px solid var(--line-d)}
.imp .ar{color:var(--crimson);font-size:20px;font-weight:800;margin-right:var(--space-2)}
.imp h4{display:inline;font-size:18px;font-weight:700;letter-spacing:-.01em;color:var(--white)}
.imp p{font-size:var(--fs-caption);line-height:1.5;margin-top:var(--space-2);max-width:46ch}
.ringwrap{display:flex;align-items:center;flex-wrap:wrap;gap:var(--space-8);margin-top:var(--space-2)}
/* segments follow the legend: 60% first-hand data, 20% research, 20% synthetic enrichment */
.ring{position:relative;flex-shrink:0;width:170px;height:170px;border-radius:50%;background:conic-gradient(var(--crimson) 0 60%,var(--teal) 60% 80%,var(--teal-light) 80% 100%)}
.ring::after{content:"";position:absolute;inset:26px;border-radius:50%;background:var(--charcoal)}
.ring .cen{position:absolute;inset:0;z-index:2;display:flex;flex-direction:column;align-items:center;justify-content:center}
.ring .cen b{font-size:30px;font-weight:900;letter-spacing:-.03em;color:var(--white)}
.ring .cen span{font-size:11px;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:var(--charcoal-light)}
.legend{display:flex;flex-direction:column;gap:var(--space-2)}
.legend .li{display:flex;align-items:center;gap:var(--space-3);font-size:var(--fs-caption);color:var(--charcoal-light)}
.legend .sw{width:12px;height:12px;border-radius:50%}
.legend .li b{font-family:var(--mono);font-size:13px;font-weight:500;color:var(--white)}
.punch{margin-top:var(--space-12);padding-top:var(--space-8);border-top:1px solid var(--line-d);max-width:60ch}
.punch p{font-size:var(--fs-quote);font-weight:800;line-height:1.25;letter-spacing:-.025em;color:var(--white);max-width:none}
.punch p em{color:var(--crimson)}

/* ------------------------------------------------------------------
   07 · Stack and lessons (sand-light)
   ------------------------------------------------------------------ */
.stackgrid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--space-4);margin-top:var(--space-10)}
.stackcard{padding:var(--space-7) var(--space-6) var(--space-6);border-radius:var(--r-sm);border:1px solid var(--line-l);transition:border-color var(--dur-slow) var(--ease),background var(--dur-slow) var(--ease)}
.stackcard:hover{border-color:var(--charcoal);background:var(--white)}
.stackcard .tagline{font-size:13px;font-weight:800;letter-spacing:.12em;text-transform:uppercase;color:var(--crimson-deep);margin-bottom:var(--space-3)}
.stackcard h4{font-size:var(--fs-h3);line-height:1.05;letter-spacing:-.025em;margin-bottom:var(--space-2)}
.stackcard p{font-size:var(--fs-caption);line-height:1.55}
.takes{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:var(--space-6);margin-top:var(--space-12)}
.take{padding-top:var(--space-5);border-top:1px solid var(--line-l)}
.take .tn{font-size:var(--fs-h3);font-weight:800;line-height:1;color:var(--crimson-deep)}
.take h4{font-size:18px;font-weight:700;letter-spacing:-.01em;line-height:1.2;margin:var(--space-3) 0 var(--space-2)}
.take p{font-size:14px;line-height:1.5;color:var(--ink-2)}
.confnote{display:inline-flex;align-items:center;min-height:36px;margin-top:var(--space-5);padding:6px 16px;border-radius:var(--r-full);border:1px dashed rgba(25,28,35,.28);font-size:12px;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-2)}

/* ------------------------------------------------------------------
   Responsive
   ------------------------------------------------------------------ */
@media (max-width:1100px){
  .takes{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media (max-width:960px){
  .challenge .grid,.value .grid{grid-template-columns:1fr}
  .quad,.frictions,.stackgrid{grid-template-columns:1fr}
  .scanband{grid-template-columns:repeat(2,minmax(0,1fr))}
  .takes{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:700px){
  .serpent{gap:30px}
  .snode,.snode.left,.snode.right{width:100%;align-self:stretch}
}
@media (max-width:560px){
  .scanband,.takes{grid-template-columns:1fr}
  .quote{padding:var(--space-8) var(--space-6) var(--space-6)}
  .tl-item{gap:var(--space-4)}
}
@media (prefers-reduced-motion:reduce){
  .js .rv,.js .tl-item,.js .snode,.hero .anim{opacity:1;transform:none;animation:none}
}

/* The collages carry a cream ground a shade lighter than sand-light; "darken" lets the section
   colour show through the cream so the images sit without a box (the artwork is darker, so it stays) */
#problem img,#catalogue figure img,#lessons figure img{mix-blend-mode:darken!important}
/* the blend needs the section colour as its backdrop: no stacking layer in these glow-free sections */
#problem .wrap,#catalogue .wrap,#lessons .wrap{z-index:auto}