/* Carstylus public site — "Studio Lightbox" direction
   Graphite viewing-room canvas, spec-sheet labels, bronze accent from the Osiris wheel inlays.
   System fonts only; no external resources. */

:root{
  --bg:#101214;
  --surface:#16191c;
  --raise:#1d2125;
  --ink:#eeede8;
  --soft:#c4c8ca;
  --muted:#a2a8ac;
  --line:rgba(238,237,232,.13);
  --line-strong:rgba(238,237,232,.32);
  --gold:#d6a84e;
  --gold-hover:#e6bd68;
  --on-gold:#15120c;
  --paper:#fffad4;          /* the sketch's own paper colour */
  --paper-ink:#1f1c14;
  --paper-muted:#5a5440;
  --paper-line:rgba(31,28,20,.22);
  --gutter:clamp(16px,5vw,72px);
  --max:1360px;
  --edge:max(var(--gutter),calc((100vw - var(--max))/2));
  --sans:"Segoe UI Variable Display","Segoe UI Variable Text","Segoe UI",-apple-system,BlinkMacSystemFont,"Helvetica Neue",Arial,sans-serif;
  --mono:"Cascadia Mono","SF Mono",ui-monospace,Menlo,Consolas,"Liberation Mono",monospace;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.65 var(--sans);overflow-x:hidden;overflow-x:clip;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer}
img{display:block;max-width:100%}
h1,h2,h3,p{margin-top:0}
[hidden]{display:none!important}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible,main:focus-visible{outline:2px solid var(--gold);outline-offset:4px}
main:focus{outline:none}

/* ---------- Utility type ---------- */
.eyebrow,.index,.video-index,.spec-strip,.status,.view-note,.preview-label,.legal,.form-hint,.data-plate dt{font-family:var(--mono);letter-spacing:.06em}
.eyebrow{font-size:12px;text-transform:uppercase;color:var(--gold);margin:0 0 22px;display:flex;align-items:center;gap:12px}
.eyebrow::before{content:"";width:22px;height:1px;background:currentColor;flex:none}
.soft{color:var(--muted)}

h1{font-size:clamp(44px,6vw,96px);line-height:.98;font-weight:600;letter-spacing:-.045em;margin:0 0 28px}
h1 span{display:block;font-weight:300;color:var(--muted)}
h2{font-size:clamp(30px,3.4vw,52px);line-height:1.08;font-weight:600;letter-spacing:-.035em;margin-bottom:22px}
h3{font-size:24px;line-height:1.2;letter-spacing:-.02em;font-weight:600;margin-bottom:12px}
.intro{font-size:clamp(17px,1.4vw,20px);line-height:1.6;color:var(--soft);max-width:44ch}

/* ---------- Chrome ---------- */
.preview-label{background:#000;color:#b9bec1;text-align:center;font-size:11px;padding:6px 16px;border-bottom:1px solid var(--line)}
.skip{position:absolute;left:16px;top:-100px;background:var(--gold);color:var(--on-gold);padding:10px 14px;z-index:30;font-weight:600}
.skip:focus{top:10px}

.site-header{position:sticky;top:0;z-index:20;background:rgba(16,18,20,.86);backdrop-filter:saturate(140%) blur(14px);-webkit-backdrop-filter:saturate(140%) blur(14px);border-bottom:1px solid var(--line)}
.header-inner{max-width:calc(var(--max) + 2*var(--gutter));margin:0 auto;padding:0 var(--gutter);height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px;position:relative}
.wordmark{font-weight:800;font-size:24px;letter-spacing:-.04em;white-space:nowrap;line-height:1}
.wordmark span{font-weight:300}
.wordmark i{color:var(--gold);font-style:normal;font-weight:300;padding-left:4px;display:inline-block;transform:skewX(-8deg)}
.site-header nav{display:flex;gap:6px;align-items:center;font-size:14px;font-weight:500}
.site-header nav a{padding:10px 14px;color:var(--soft);border:1px solid transparent;transition:color .15s,border-color .15s}
.site-header nav a:hover{color:var(--ink)}
.site-header nav a[aria-current="page"]{color:var(--ink);box-shadow:inset 0 -2px 0 var(--gold)}
.site-header nav .contact-link{margin-left:10px;border-color:var(--line-strong);color:var(--ink)}
.site-header nav .contact-link:hover{border-color:var(--gold);color:var(--gold)}
.site-header nav .contact-link[aria-current="page"]{border-color:var(--gold);box-shadow:none;color:var(--gold)}
.contact-link span{padding-left:10px}
.menu-toggle{display:none}

/* ---------- Layout ---------- */
.page{max-width:calc(var(--max) + 2*var(--gutter));margin:0 auto;padding:0 var(--gutter)}
.bleed{margin-left:calc(-1*var(--gutter));margin-right:calc(-1*var(--gutter))}
@media(min-width:1504px){.bleed{margin-left:calc((var(--max) - 100vw)/2);margin-right:calc((var(--max) - 100vw)/2)}}

/* ---------- Buttons & links ---------- */
.button{display:inline-flex;align-items:center;gap:18px;background:var(--gold);color:var(--on-gold);border:0;border-radius:0;padding:15px 22px;font-size:15px;font-weight:600;letter-spacing:.005em;transition:background .15s}
.button:hover{background:var(--gold-hover)}
.quiet-link,.text-link{font-size:15px;font-weight:600;color:var(--ink);background:none;border:0;padding:0 0 3px;border-bottom:1px solid var(--line-strong);transition:border-color .15s,color .15s}
.quiet-link:hover,.text-link:hover{border-color:var(--gold);color:var(--gold)}
.text-link{display:inline-block;margin-top:8px}
.story-copy .text-link{display:table}
.actions{display:flex;flex-wrap:wrap;align-items:center;gap:18px 30px;margin-top:30px}

/* ---------- Home: hero ---------- */
.hero{display:grid;grid-template-columns:minmax(0,1.8fr) minmax(0,1fr);gap:40px 6%;align-items:end;padding:clamp(48px,7vw,104px) 0 clamp(36px,4vw,56px)}
.hero h1{margin-bottom:0}
.hero-side .intro{margin-bottom:0}
.hero-image{margin-top:0;margin-bottom:0;position:relative;background:#0b0c0d}
.hero-image img{width:100%;aspect-ratio:21/9;object-fit:cover;object-position:62% 78%}
.spec-strip{display:flex;flex-wrap:wrap;gap:6px 32px;font-size:12px;color:var(--muted);padding:14px var(--edge);border-bottom:1px solid var(--line);text-transform:uppercase}
.spec-strip b{color:var(--gold);font-weight:400;margin-right:8px}
.spec-strip span:last-child{margin-left:auto}
.small-note{font-family:var(--mono);font-size:12px;color:var(--muted);letter-spacing:.04em;margin:18px 0 0;text-align:right}

.section-head{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,2fr);gap:30px;align-items:baseline;padding-top:clamp(72px,9vw,128px)}
.section-head h2{margin-bottom:0}
.editorial-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;margin:48px 0 clamp(72px,9vw,128px);border-top:1px solid var(--line)}
.editorial-item{padding:28px 32px 34px 0;border-right:1px solid var(--line);display:flex;flex-direction:column;position:relative;transition:background .2s}
.editorial-item+.editorial-item{padding-left:32px}
.editorial-item:last-child{border-right:0}
.editorial-item::before{content:"";position:absolute;top:-1px;left:0;width:0;height:2px;background:var(--gold);transition:width .25s ease}
.editorial-item+.editorial-item::before{left:32px}
.editorial-item:hover::before,.editorial-item:focus-visible::before{width:56px}
.index{font-size:12px;color:var(--gold)}
.editorial-item h3{margin-top:64px}
.editorial-item p{color:var(--muted);font-size:16px;max-width:34ch;flex:1}
.arrow{font-size:14px;font-weight:600;margin-top:14px;color:var(--ink)}
.editorial-item:hover .arrow{color:var(--gold)}

/* Sketchbook band: the sketch sits on its own paper colour */
.paper{background:var(--paper);color:var(--paper-ink)}
.paper .eyebrow{color:#7a4f12}
.paper .text-link{color:var(--paper-ink);border-color:var(--paper-line)}
.paper .text-link:hover{color:#7a4f12;border-color:#7a4f12}
.paper :focus-visible{outline-color:var(--paper-ink)}
.feature{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.7fr);gap:6%;align-items:center;padding:clamp(56px,7vw,96px) var(--edge)}
.feature-copy{max-width:420px}
.feature p{color:var(--paper-muted)}
.feature img{width:100%;mix-blend-mode:multiply}

.closing{padding:clamp(80px,10vw,144px) 0;display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:end;gap:32px;border-bottom:1px solid var(--line)}
.closing .eyebrow{grid-column:1/-1;margin-bottom:0}
.closing h2{margin:0}
.closing .button{justify-self:start}

/* ---------- Inner pages ---------- */
.page-title{padding:clamp(48px,7vw,104px) 0 clamp(32px,4vw,56px);max-width:1100px}
.page-title h1{font-size:clamp(46px,6.6vw,100px)}

/* Work */
.project-visual{position:relative;background:#0b0c0d}
.project-visual img{width:100%;aspect-ratio:16/9;max-height:820px;object-fit:cover}
.view-bar{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px var(--edge);border-bottom:1px solid var(--line);flex-wrap:wrap}
.view-controls{display:inline-flex;border:1px solid var(--line-strong);padding:3px;gap:3px}
.view-controls button{border:0;background:none;color:var(--soft);font-size:14px;font-weight:500;padding:9px 16px;transition:background .15s,color .15s}
.view-controls button:hover{color:var(--ink)}
.view-controls button.selected{background:var(--ink);color:var(--bg)}
.view-note{font-size:12px;color:var(--muted);text-transform:uppercase}
.project-story{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,2fr);gap:6%;padding:clamp(56px,7vw,96px) 0 clamp(72px,9vw,128px)}
.story-copy p{max-width:62ch;color:var(--soft)}
.status{font-size:12px;color:var(--ink)!important;text-transform:uppercase;display:flex;width:fit-content;align-items:center;gap:10px;border:1px solid var(--line-strong);padding:8px 12px;margin:10px 0 24px}
.status::before{content:"";width:7px;height:7px;background:var(--gold);flex:none}
.data-plate{margin:0;border-top:1px solid var(--line-strong);align-self:start}
.data-plate div{display:grid;grid-template-columns:110px 1fr;gap:12px;padding:14px 0;border-bottom:1px solid var(--line)}
.data-plate dt{font-size:12px;text-transform:uppercase;color:var(--muted);padding-top:3px}
.data-plate dd{margin:0;font-weight:500}

/* Learn */
.video-list{border-top:1px solid var(--line);margin-bottom:clamp(56px,7vw,96px)}
.video-list>a{display:grid;grid-template-columns:96px minmax(0,1fr) auto;gap:32px;padding:36px 0;align-items:center;border-bottom:1px solid var(--line);transition:background .2s}
.video-list>a:hover{background:linear-gradient(90deg,rgba(214,168,78,.06),transparent 70%)}
.video-index{font-size:40px;color:var(--gold);font-weight:300;letter-spacing:0;line-height:1}
.video-list h2{font-size:clamp(22px,2.2vw,30px);margin-bottom:8px;max-width:28ch}
.video-list .eyebrow{font-size:11px;margin-bottom:12px;color:var(--muted)}
.video-list .eyebrow::before{display:none}
.video-list p{font-size:16px;color:var(--muted);margin:0}
.video-action{font-size:14px;font-weight:600;border:1px solid var(--line-strong);padding:11px 16px;white-space:nowrap;transition:border-color .15s,color .15s}
.video-list>a:hover .video-action{border-color:var(--gold);color:var(--gold)}
.learning-note{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,2fr);gap:6%;align-items:baseline;padding:0 0 clamp(72px,9vw,128px)}
.learning-note p{color:var(--soft);max-width:60ch}

/* About */
.about-layout{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:7%;padding-bottom:clamp(72px,9vw,128px);align-items:start}
.paper-card{margin:0;background:var(--paper);padding:clamp(20px,3vw,40px) clamp(20px,3vw,40px) 0}
.paper-card img{width:100%;mix-blend-mode:multiply}
.spec-strip.on-paper{color:var(--paper-muted);border-top:1px solid var(--paper-line);border-bottom:0;padding:12px 0;margin-top:16px}
.about-copy p{color:var(--soft)}
.about-copy .intro{color:var(--ink);margin-bottom:28px}
.about-copy .button{margin-top:16px}

/* Contact */
.contact-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.6fr);gap:7%;padding-bottom:clamp(72px,9vw,128px);align-items:start}
.preview-note{border:1px solid var(--line);background:var(--surface);padding:28px;font-size:15px;color:var(--soft)}
.preview-note .eyebrow{margin-bottom:16px}
form{display:grid;gap:22px}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:8px}
input,select,textarea{width:100%;background:var(--surface);border:1px solid var(--line-strong);border-radius:0;padding:13px 14px;color:var(--ink);transition:border-color .15s}
input:hover,select:hover,textarea:hover{border-color:rgba(238,237,232,.5)}
input:focus,select:focus,textarea:focus{border-color:var(--gold)}
select{appearance:none;-webkit-appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--muted) 50%),linear-gradient(135deg,var(--muted) 50%,transparent 50%);background-position:calc(100% - 20px) 55%,calc(100% - 14px) 55%;background-size:6px 6px;background-repeat:no-repeat;padding-right:40px}
option{background:var(--surface);color:var(--ink)}
textarea{resize:vertical;min-height:150px}
.form-actions{display:flex;flex-wrap:wrap;align-items:center;gap:14px 24px}
.form-hint{font-size:12px;color:var(--muted);text-transform:uppercase}
#contact-result{margin:0;font-size:15px;color:var(--gold)}
#contact-result:empty{display:none}
#download-message{justify-self:start;margin:0}

/* ---------- Footer ---------- */
.site-footer{border-top:1px solid var(--line);background:#0b0c0d}
.footer-inner{max-width:calc(var(--max) + 2*var(--gutter));margin:0 auto;padding:36px var(--gutter);display:flex;align-items:center;gap:20px 36px;flex-wrap:wrap;font-size:14px;color:var(--muted)}
.site-footer .wordmark{font-size:20px;color:var(--ink)}
.site-footer p{margin:0;flex:1}
.site-footer a:not(.wordmark):hover{color:var(--gold)}
.legal{font-size:12px}

/* ---------- Responsive ---------- */
@media(max-width:1040px){
  .hero{grid-template-columns:1fr;gap:28px}
  .section-head,.project-story,.learning-note{grid-template-columns:1fr;gap:20px}
  .data-plate{order:2}
  .editorial-item h3{margin-top:40px}
  .closing{grid-template-columns:1fr}
}

@media(max-width:760px){
  body{font-size:16px}
  .header-inner{height:64px}
  .wordmark{font-size:21px}
  .menu-toggle{display:inline-flex;align-items:center;gap:12px;border:1px solid var(--line-strong);background:none;padding:9px 14px;font-size:14px;font-weight:500}
  .menu-icon{width:14px;height:10px;position:relative;border-top:1.5px solid currentColor;border-bottom:1.5px solid currentColor}
  .menu-icon::after{content:"";position:absolute;left:0;right:0;top:50%;height:1.5px;margin-top:-.75px;background:currentColor}
  .menu-toggle[aria-expanded="true"] .menu-icon{border-color:transparent}
  .menu-toggle[aria-expanded="true"] .menu-icon::after{transform:rotate(45deg)}
  .menu-toggle[aria-expanded="true"] .menu-icon::before{content:"";position:absolute;left:0;right:0;top:50%;height:1.5px;margin-top:-.75px;background:currentColor;transform:rotate(-45deg)}
  .site-header nav{display:none;position:absolute;top:100%;left:0;right:0;padding:8px var(--gutter) 20px;background:var(--bg);border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch;gap:0;font-size:18px}
  .site-header nav.open{display:flex}
  .site-header nav a{padding:16px 0;border:0;border-bottom:1px solid var(--line)}
  .site-header nav a[aria-current="page"]{box-shadow:none;color:var(--gold)}
  .site-header nav .contact-link{margin:16px 0 0;border:1px solid var(--line-strong);padding:14px 16px;display:flex;justify-content:space-between}

  h1{font-size:clamp(42px,12vw,60px)}
  .page-title h1{font-size:clamp(42px,12vw,60px)}
  .hero{padding-top:40px}
  .hero-image img{aspect-ratio:4/3;object-position:64% 80%}
  .spec-strip{gap:4px 18px;font-size:11px}
  .spec-strip span:last-child{margin-left:0}
  .small-note{text-align:left}
  .editorial-grid{grid-template-columns:1fr;margin-top:28px}
  .editorial-item,.editorial-item+.editorial-item{padding:24px 0 28px;border-right:0;border-bottom:1px solid var(--line)}
  .editorial-item+.editorial-item::before{left:0}
  .editorial-item h3{margin-top:20px}
  .feature{grid-template-columns:1fr;gap:28px}
  .project-visual img{aspect-ratio:4/3}
  .view-controls{display:flex;width:100%}
  .view-controls button{flex:1;padding:11px 6px;font-size:13px}
  .video-list>a{grid-template-columns:44px minmax(0,1fr);gap:8px 16px;padding:28px 0}
  .video-index{font-size:24px}
  .video-action{grid-column:2;justify-self:start;margin-top:10px}
  .about-layout,.contact-layout{grid-template-columns:1fr;gap:36px}
  .about-layout .paper-card{order:2}
  .field-row{grid-template-columns:1fr}
  .site-footer p{flex-basis:100%;order:3}
}

@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}