/* Substantive case-study pages for the selected kinetic portfolio.
   Purpose-made editorial layouts; no reference screenshots or product code imports. */
:root{--cas-font:"Inter Display","Arial Black","Helvetica Neue",Arial,sans-serif;--cas-ui:"Inter","Helvetica Neue",Arial,sans-serif}
*,*:before,*:after{box-sizing:border-box}
html{scroll-behavior:smooth}
body.case-body{margin:0;background:var(--cas-paper);color:var(--cas-ink);font-family:var(--cas-ui);-webkit-font-smoothing:antialiased}
button,input{font:inherit}
a{color:inherit;text-decoration:none}
button:focus-visible,a:focus-visible{outline:3px solid var(--cas-accent);outline-offset:5px}
.skip-case{position:fixed;top:-99px;left:14px;z-index:1000;background:#fff;color:#111;padding:14px}
.skip-case:focus{top:14px}
.case-body{--cas-paper:#f8f8f4;--cas-ink:#17213d;--cas-accent:#3159df;--cas-panel:#e5edf8;--cas-detail:#5a6580}
.case-body[data-theme="jewellery"]{--cas-paper:#0c121e;--cas-ink:#f8edd7;--cas-accent:#f6c282;--cas-panel:#192332;--cas-detail:#bdafa0}
.case-body[data-theme="backoffice"]{--cas-paper:#d9f64e;--cas-ink:#112226;--cas-accent:#11726d;--cas-panel:#edf8af;--cas-detail:#415543}
.case-header{position:sticky;top:0;z-index:100;min-height:75px;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:10px clamp(20px,5vw,84px);border-bottom:1px solid color-mix(in srgb,var(--cas-ink) 18%,transparent);background:var(--cas-paper)}
.case-brand{display:flex;align-items:center;gap:13px;font-family:var(--cas-font);font-size:14px;font-weight:950}
.case-brand b{font-size:35px;line-height:1;letter-spacing:-.075em}
.case-brand b span{color:var(--cas-accent)}
.case-brand small{display:block;font-family:var(--cas-ui);font-size:9px;letter-spacing:.12em;margin-top:3px;font-weight:800}
.case-nav{display:flex;align-items:center;gap:clamp(10px,2vw,35px);font-size:12px;font-weight:750}
.case-nav a{padding:10px 3px}
.case-nav a:hover{text-decoration:underline;text-underline-offset:6px}
.case-menu-button{display:none;border:1px solid var(--cas-ink);background:transparent;color:inherit;width:46px;height:43px;font-weight:900}
.case-overline{font-size:11px;letter-spacing:.13em;font-weight:800;text-transform:uppercase}
.case-hero{padding:clamp(72px,9vw,145px) clamp(20px,5vw,84px) clamp(75px,8vw,130px);min-height:calc(94vh - 75px);display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.86fr);align-items:center;gap:clamp(40px,6vw,110px)}
.case-hero h1{font-family:var(--cas-font);font-size:clamp(59px,7vw,136px);line-height:.92;letter-spacing:-.075em;font-weight:950;margin:34px 0}
.case-hero h1 em{font-style:normal;color:var(--cas-accent)}
.case-hero-lead{font-size:clamp(18px,2vw,28px);line-height:1.44;letter-spacing:-.02em;max-width:37ch}
.case-actions{display:flex;gap:18px;flex-wrap:wrap;margin-top:43px}
.case-cta{display:inline-flex;align-items:center;gap:21px;padding:16px 22px;border:2px solid var(--cas-ink);font-weight:800;font-size:13px}
.case-cta-primary{background:var(--cas-ink);color:var(--cas-paper)}
.case-cta:hover{transform:translateY(-3px)}
.case-visual{align-self:center;position:relative;min-height:clamp(320px,39vw,570px);overflow:hidden;border:1px solid color-mix(in srgb,var(--cas-ink) 18%,transparent);border-radius:18px;background:var(--cas-panel);display:flex;flex-direction:column;justify-content:center;padding:clamp(20px,3vw,52px);box-shadow:19px 21px 0 color-mix(in srgb,var(--cas-ink) 11%,transparent)}
.case-visual:before{content:"";pointer-events:none;position:absolute;width:330px;height:330px;border:1px solid color-mix(in srgb,var(--cas-accent) 20%,transparent);border-radius:50%;right:-120px;top:-145px}
.case-visual:after{content:"";pointer-events:none;position:absolute;width:220px;height:220px;background:radial-gradient(circle,color-mix(in srgb,var(--cas-accent) 22%,transparent),transparent 65%);bottom:-85px;left:-70px}
.case-visual>*{position:relative;z-index:1}
.case-diagram-label{font-size:10px;letter-spacing:.14em;font-weight:850;text-transform:uppercase;opacity:.77}
.case-illustration{margin-top:28px;display:grid;gap:13px}
.case-illustration-row{display:flex;align-items:center;gap:13px;background:color-mix(in srgb,var(--cas-paper) 85%,transparent);color:var(--cas-ink);border:1px solid color-mix(in srgb,var(--cas-ink) 15%,transparent);padding:17px 18px;border-radius:9px}
.case-illustration-row b{font-size:clamp(20px,2.5vw,38px);letter-spacing:-.055em}
.case-illustration-row span{margin-left:auto;font-size:10px;text-transform:uppercase;font-weight:750;letter-spacing:.07em}
.case-illustration-row:nth-child(2){margin-left:25px}
.case-illustration-row:nth-child(3){margin-left:50px}
.case-visual-footer{margin-top:29px;font-size:10px;letter-spacing:.11em;line-height:1.6;text-transform:uppercase;font-weight:800}
.case-body[data-theme="jewellery"] .case-visual{background:radial-gradient(circle at 40% 36%,#4c3f35,transparent 52%),linear-gradient(140deg,#121c2c,#080e17)}
.case-body[data-theme="jewellery"] .case-illustration-row{background:#182233;border-color:#936b4a}
.case-body[data-theme="backoffice"] .case-visual{background:radial-gradient(circle at 100% 0,#77d5b380,transparent 50%),#f1f9bb}
.case-section{padding:clamp(85px,9vw,142px) clamp(20px,5vw,84px);background:var(--cas-panel);color:var(--cas-ink)}
.case-section.alt{background:var(--cas-paper)}
.case-section-title{font-size:clamp(44px,6vw,101px);font-family:var(--cas-font);letter-spacing:-.07em;line-height:.97;margin:31px 0 55px;max-width:13ch}
.case-section-subtitle{font-size:clamp(18px,2.1vw,27px);line-height:1.52;max-width:66ch;margin:-18px 0 48px}
.case-steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(20px,4vw,60px)}
.case-step{padding-top:16px;border-top:2px solid color-mix(in srgb,var(--cas-ink) 45%,transparent)}
.case-step small{display:block;letter-spacing:.14em;font-size:10px;font-weight:850;color:var(--cas-accent)}
.case-step h3{font-family:var(--cas-font);font-size:clamp(23px,2.8vw,41px);letter-spacing:-.055em;line-height:1.06;margin:22px 0 17px}
.case-step p{font-size:15px;line-height:1.65;color:var(--cas-detail);margin:0;max-width:44ch}
.case-demo{display:grid;grid-template-columns:minmax(0,.75fr) minmax(0,1.25fr);gap:6vw;align-items:center}
.case-demo h2{font-family:var(--cas-font);font-size:clamp(42px,5vw,85px);letter-spacing:-.068em;line-height:1.01;margin:24px 0}
.case-demo p{font-size:clamp(16px,1.7vw,22px);line-height:1.5;max-width:42ch}
.case-tablist{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
.case-tablist button{padding:17px 12px;border:1px solid color-mix(in srgb,var(--cas-ink) 30%,transparent);background:transparent;color:var(--cas-ink);text-align:left;font-size:14px;font-weight:800}
.case-tablist button[aria-pressed="true"]{background:var(--cas-ink);color:var(--cas-paper)}
.case-tablist button:hover:not([aria-pressed="true"]){background:color-mix(in srgb,var(--cas-accent) 15%,transparent)}
.case-demo-panel{padding:clamp(26px,4.2vw,65px);background:var(--cas-panel);border:1px solid color-mix(in srgb,var(--cas-ink) 20%,transparent);border-radius:14px;min-height:350px;display:flex;flex-direction:column;justify-content:space-between}
.case-demo-panel small{font-size:11px;letter-spacing:.13em;font-weight:900;text-transform:uppercase}
.case-demo-panel h3{font-size:clamp(34px,4.4vw,72px);font-family:var(--cas-font);font-weight:950;line-height:1.04;letter-spacing:-.062em;margin:20px 0}
.case-demo-panel p{margin:0 0 26px;font-size:clamp(16px,1.8vw,22px)}
.case-demo-panel .case-note{font-size:11px;letter-spacing:.08em;font-weight:800;text-transform:uppercase;padding-top:20px;border-top:1px solid color-mix(in srgb,var(--cas-ink) 25%,transparent)}
.case-honesty{display:grid;grid-template-columns:1fr 1fr;gap:6vw;background:var(--cas-ink);color:var(--cas-paper);padding:clamp(70px,8vw,120px) clamp(20px,5vw,84px)}
.case-honesty h2{font-family:var(--cas-font);font-size:clamp(38px,5vw,85px);line-height:1.04;letter-spacing:-.063em;margin:15px 0}
.case-honesty p{font-size:clamp(15px,1.8vw,23px);line-height:1.58;max-width:47ch}
.case-honesty .case-overline{color:var(--cas-accent)}
.case-next{display:flex;align-items:center;justify-content:space-between;gap:30px;padding:clamp(64px,8vw,130px) clamp(20px,5vw,84px)}
.case-next h2{font-family:var(--cas-font);font-size:clamp(40px,5vw,88px);letter-spacing:-.07em;line-height:1;margin:17px 0}
.case-next a{display:inline-flex;padding:20px 24px;border:2px solid var(--cas-ink);font-size:13px;font-weight:850}
.case-next a:hover{background:var(--cas-ink);color:var(--cas-paper)}
.case-footer{padding:24px clamp(20px,5vw,84px);border-top:1px solid color-mix(in srgb,var(--cas-ink) 28%,transparent);display:flex;justify-content:space-between;gap:15px;flex-wrap:wrap;font-size:11px;letter-spacing:.08em;font-weight:800}
.case-footer a{text-decoration:underline;text-underline-offset:5px}
@media(max-width:980px){
 .case-hero{grid-template-columns:1fr;min-height:auto;gap:40px}
 .case-hero h1{max-width:11ch}
 .case-visual{min-height:360px}
 .case-demo{grid-template-columns:1fr;gap:36px}
}
@media(max-width:720px){
 .case-header{min-height:68px;flex-wrap:wrap}
 .case-menu-button{display:block}
 .case-nav{display:none;width:100%;order:3;flex-direction:column;align-items:stretch;gap:0;padding:8px 0 15px}
 .case-nav.is-open{display:flex}
 .case-nav a{padding:14px 2px;border-top:1px solid color-mix(in srgb,var(--cas-ink) 23%,transparent)}
 .case-header{gap:8px}
 .case-hero{padding-top:76px;padding-bottom:85px}
 .case-hero h1{font-size:clamp(58px,11vw,93px)}
 .case-steps{grid-template-columns:1fr}
 .case-step{max-width:68ch}
 .case-honesty{grid-template-columns:1fr}
 .case-next{flex-direction:column;align-items:start}
}
@media(max-width:420px){
 .case-brand{font-size:11px;gap:9px}
 .case-brand b{font-size:31px}
 .case-hero h1{font-size:13.2vw}
 .case-visual{min-height:320px;padding:18px}
 .case-illustration-row{padding:14px 11px}
 .case-illustration-row:nth-child(2){margin-left:12px}
 .case-illustration-row:nth-child(3){margin-left:24px}
 .case-illustration-row b{font-size:22px}
 .case-illustration-row span{font-size:8px}
 .case-demo-panel{min-height:330px}
 .case-actions{flex-direction:column;align-items:start}
}
@media(prefers-reduced-motion:reduce){
 html{scroll-behavior:auto}
 *,*:before,*:after{animation:none!important;transition:none!important;scroll-behavior:auto!important}
 .case-cta:hover{transform:none}
}