/* Layout: страницата е чертожен лист — тънка рамка, полета с надписи като в щампа, контактите са щампът. */
@font-face{font-family:"IBM Plex Sans";src:url(fonts/plex-sans-400.woff) format("woff");font-weight:400;font-display:swap}
@font-face{font-family:"IBM Plex Sans";src:url(fonts/plex-sans-700.woff) format("woff");font-weight:700;font-display:swap}
@font-face{font-family:"IBM Plex Mono";src:url(fonts/plex-mono-400.woff) format("woff");font-weight:400;font-display:swap}
@font-face{font-family:"IBM Plex Mono";src:url(fonts/plex-mono-700.woff) format("woff");font-weight:700;font-display:swap}
@font-face{font-family:"Vilka";src:url(fonts/vilka.woff) format("woff");font-weight:400 900;font-display:swap}
:root{
  --ink:#1A2F4B; --lime:#E3E0D8; --copper:#C08F6A; --concrete:#4A4A4A;
  --bg:#F4F2EE; --surface:#FFFFFF; --panel:#1A2F4B; --panel-fg:#E3E0D8; --panel-muted:#B7C0CC;
  --fg:#1E2633; --muted:#4A4A4A; --line:#1A2F4B; --hair:#D3CFC6; --accent:#C08F6A; --accent-text:#8A5A36;
  --f-display:"Vilka","Arial Black",system-ui,sans-serif;
  --f-body:"IBM Plex Sans",system-ui,-apple-system,"Segoe UI",Arial,sans-serif;
  --f-mono:"IBM Plex Mono",ui-monospace,"SFMono-Regular",Consolas,monospace;
  --wrap:1180px;
}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){
  --bg:#0F1A2A; --surface:#15243A; --panel:#1A2F4B; --panel-fg:#E3E0D8; --panel-muted:#B7C0CC;
  --fg:#E3E0D8; --muted:#A9B2BE; --line:#7E8DA3; --hair:#2A3B55; --accent:#C08F6A; --accent-text:#D9A983; color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#0F1A2A; --surface:#15243A; --panel:#1A2F4B; --panel-fg:#E3E0D8; --panel-muted:#B7C0CC;
  --fg:#E3E0D8; --muted:#A9B2BE; --line:#7E8DA3; --hair:#2A3B55; --accent:#C08F6A; --accent-text:#D9A983; color-scheme:dark}
*{box-sizing:border-box}
html{scroll-behavior:smooth;font-feature-settings:"locl" 0}
body{background:var(--bg);color:var(--fg);font-family:var(--f-body);font-size:17px;line-height:1.6;-webkit-font-smoothing:antialiased}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:10;background:var(--panel)}
a{color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.wrap{max-width:var(--wrap);margin:0 auto;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
.label{font-family:var(--f-mono);font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
h1,h2,h3{font-family:var(--f-display);font-weight:900;line-height:1.05;margin:0;text-wrap:balance}
h2{font-size:clamp(30px,4.2vw,48px);color:var(--fg)}
h3{font-size:22px}
p{margin:0}

/* header */
.top{position:sticky;top:env(safe-area-inset-top,0px);z-index:9;background:var(--panel);color:var(--panel-fg)}
.top .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-block:12px}
.mark{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--panel-fg)}
.mark .n{font-family:var(--f-display);font-weight:900;font-size:30px;line-height:.8;letter-spacing:-.04em}
.mark .deg{color:var(--copper)}
.mark .bar{width:2px;height:28px;background:var(--copper)}
.mark .w{display:flex;flex-direction:column;gap:3px;font-family:var(--f-display);font-weight:700;font-size:15px;letter-spacing:.04em;line-height:1;white-space:nowrap}
.mark .w small{font-family:var(--f-mono);font-weight:400;font-size:10px;letter-spacing:.14em;color:var(--copper)}
nav ul{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:4px 22px}
nav a{font-family:var(--f-mono);font-size:13px;letter-spacing:.08em;text-decoration:none;color:var(--panel-muted);padding:6px 0;display:inline-block}
nav a:hover{color:var(--panel-fg)}

/* hero */
.hero{overflow:hidden;background:var(--panel);color:var(--panel-fg);border-bottom:6px solid var(--copper)}
.hero .wrap{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);gap:48px;align-items:end;padding-block:64px 56px}
.hero .label{color:var(--panel-muted)}
.hero .wrap>*{min-width:0}
.hero h1{font-size:clamp(27px,5.4vw,68px);color:var(--panel-fg);margin-top:18px}
.hero h1 em{font-style:normal;color:var(--copper)}
.hero p.lead{max-width:56ch;margin-top:22px;color:var(--panel-muted);font-size:18px}
.cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.btn{display:inline-flex;align-items:center;min-height:46px;padding:0 20px;font-family:var(--f-mono);font-size:14px;letter-spacing:.06em;text-decoration:none;border:1.5px solid var(--copper);color:var(--panel-fg)}
.btn.solid{background:var(--copper);color:#1A2F4B;font-weight:700}
.btn:hover{background:var(--panel-fg);border-color:var(--panel-fg);color:#1A2F4B}
.big{font-family:var(--f-display);font-weight:900;font-size:clamp(110px,16vw,220px);white-space:nowrap;line-height:.78;letter-spacing:-.05em;color:var(--panel-fg);justify-self:end;user-select:none}
.big span{color:var(--copper)}
.ticks{height:12px;background:repeating-linear-gradient(90deg,var(--panel-muted) 0 1px,transparent 1px 10px);opacity:.35}

section{padding-block:84px}
main,footer{overflow-x:clip}
.head{display:flex;justify-content:space-between;align-items:baseline;gap:16px;flex-wrap:wrap;border-bottom:1.5px solid var(--line);padding-bottom:16px;margin-bottom:36px}

/* services */
.services{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-top:1.5px solid var(--line);border-left:1px solid var(--hair)}
.svc{padding:26px 22px 30px;border-right:1px solid var(--hair);border-bottom:1px solid var(--hair);display:flex;flex-direction:column;gap:12px;min-width:0}
.svc .label{color:var(--accent-text)}
.svc ul{margin:4px 0 0;padding:0;list-style:none;display:flex;flex-direction:column;gap:8px;font-size:15px}
.svc li{padding-left:14px;position:relative}
.svc li::before{content:"";position:absolute;left:0;top:.72em;width:6px;height:1.5px;background:var(--accent)}

/* project */
.project{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);gap:40px;align-items:start}
.sheet{background:#FFFFFF;border:1.5px solid var(--line);padding:16px;margin:0}
.sheet img{display:block;width:100%;height:auto}
.sheet figcaption{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-top:12px;font-family:var(--f-mono);font-size:12px;letter-spacing:.06em;color:#4A4A4A}
.facts{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.25fr);border-top:1.5px solid var(--line);font-variant-numeric:tabular-nums}
.facts div{padding:12px 0;border-bottom:1px solid var(--hair)}
.facts div:nth-child(odd){font-family:var(--f-mono);font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);display:flex;align-items:center;padding-right:12px;overflow-wrap:anywhere}
.facts div:nth-child(even){text-align:right;font-weight:700}
.project h3{font-size:clamp(24px,2.6vw,30px);margin-bottom:10px}
.project .intro{color:var(--muted);margin-bottom:24px}

/* process */
.steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;border-top:1.5px solid var(--line)}
.step{padding:24px 22px 28px 0;border-bottom:1px solid var(--hair);display:grid;grid-template-columns:auto minmax(0,1fr);gap:16px;min-width:0}
.step .no{font-family:var(--f-display);font-weight:900;font-size:34px;line-height:1;color:var(--accent)}
.step h3{font-size:19px;margin-bottom:6px}
.step p{font-size:15px;color:var(--muted)}

/* plans not in the basement */
.mazeto .cols{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:48px}
.mazeto p{max-width:60ch}
.mazeto p+p{margin-top:14px}
.mazeto .story{color:var(--muted);border-left:3px solid var(--copper);padding-left:20px}
.mazeto .end{font-weight:600;color:var(--accent-text)}

/* why 42 */
.why{background:var(--surface);border-block:1px solid var(--hair)}
.why .wrap{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.3fr);gap:48px;align-items:center}
.why .q{font-family:var(--f-display);font-weight:900;font-size:clamp(28px,3.6vw,44px);line-height:1.1}
.why .q em{font-style:normal;color:var(--accent-text)}
.why p{max-width:60ch}
.why p+p{margin-top:14px}

/* contact = title block */
.stamp{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border:1.5px solid var(--line);background:var(--surface)}
.cell{padding:16px 18px 18px;border-right:1px solid var(--hair);display:flex;flex-direction:column;gap:8px;min-width:0}
.cell:last-child{border-right:0}
.cell .v{font-weight:700;overflow-wrap:anywhere}
.cell .v.mono{font-family:var(--f-mono);font-weight:400}
.copy{align-self:flex-start;min-height:40px;padding:0 14px;font-family:var(--f-mono);font-size:12px;letter-spacing:.06em;background:transparent;color:var(--fg);border:1.5px solid var(--line);cursor:pointer}
.copy:hover{background:var(--line);color:var(--bg)}
.stamp .title{grid-column:1/-1;display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;background:var(--panel);color:var(--panel-fg);padding:18px;border-bottom:4px solid var(--copper)}
.stamp .title .t{font-family:var(--f-display);font-weight:900;font-size:clamp(20px,2.4vw,28px)}
.stamp .title .label{color:var(--panel-muted)}

/* archtracks portal */
.portal{background:var(--panel);color:var(--panel-fg);border-block:6px solid var(--copper)}
.portal .wrap{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);gap:48px;align-items:center}
.portal h2{color:var(--panel-fg)}
.portal .label{color:var(--panel-muted)}
.portal p{color:var(--panel-muted);margin-top:16px;max-width:52ch}
.portal ul{list-style:none;margin:0;padding:0;border-top:1.5px solid var(--panel-muted)}
.portal li{display:grid;grid-template-columns:auto minmax(0,1fr);gap:14px;padding:14px 0;border-bottom:1px solid rgba(183,192,204,.3);min-width:0}
.portal li b{font-family:var(--f-mono);font-size:12px;letter-spacing:.1em;color:var(--copper);padding-top:3px}
.portal .btn{margin-top:26px}
/* faq */
.faq{border-top:1.5px solid var(--line)}
.faq details{border-bottom:1px solid var(--hair)}
.faq summary{cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:16px;padding:18px 0;font-weight:700;font-size:18px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-family:var(--f-mono);color:var(--accent-text);font-size:22px;line-height:1}
.faq details[open] summary::after{content:"–"}
.faq details p{padding:0 0 20px;color:var(--muted);max-width:72ch}
/* form */
.inq{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:28px;border:1.5px solid var(--line);background:var(--surface);padding:22px}
.inq .full{grid-column:1/-1}
.inq label{display:flex;flex-direction:column;gap:6px;min-width:0}
.inq input,.inq select,.inq textarea{font:inherit;font-size:16px;color:var(--fg);background:var(--bg);border:1px solid var(--hair);border-bottom:1.5px solid var(--line);padding:10px 12px;border-radius:0;min-width:0;width:100%}
.inq textarea{min-height:120px;resize:vertical}
.inq .row{display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between}
.inq .note{font-size:13px;color:var(--muted);max-width:60ch}
.inq button{min-height:46px;padding:0 22px;font-family:var(--f-mono);font-size:14px;letter-spacing:.06em;font-weight:700;background:var(--copper);color:#1A2F4B;border:0;cursor:pointer}
.inq button:hover{background:var(--line);color:var(--bg)}
/* legal */
.legal{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.4fr);gap:24px;border-top:1px solid var(--hair);padding-top:20px;margin-top:20px;font-family:var(--f-body);letter-spacing:0;font-size:13px;line-height:1.55}
.legal dl{display:grid;grid-template-columns:auto minmax(0,1fr);gap:4px 14px;margin:0}
.legal dt{font-family:var(--f-mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;padding-top:2px}
.legal dd{margin:0;color:var(--fg);overflow-wrap:anywhere}

footer{padding-block:28px 36px;font-family:var(--f-mono);font-size:12px;letter-spacing:.06em;color:var(--muted)}
footer .bar{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}

@media (max-width:900px){
  .hero .wrap,.project,.why .wrap{grid-template-columns:1fr}
  .big{justify-self:start;font-size:clamp(96px,30vw,180px)}
  .services{grid-template-columns:repeat(2,minmax(0,1fr))}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stamp{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cell:nth-child(3){border-right:0}
  .cell{border-bottom:1px solid var(--hair)}
  .portal .wrap,.mazeto .cols{grid-template-columns:1fr}
}
@media (max-width:560px){
  body{font-size:16px}
  section{padding-block:60px}
  .services,.steps,.stamp{grid-template-columns:1fr}
  .cell{border-right:0}
  .step{padding-right:0}
  .inq,.legal{grid-template-columns:1fr}
  .hero h1{font-size:clamp(18px,6.1vw,30px)}
}

/* projects: home feature + cards */
.head .more{text-decoration:none;color:var(--accent-text)}
.head .more:hover{color:var(--fg)}
.feature{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);gap:40px;align-items:start;text-decoration:none;color:inherit}
.feature h3{font-size:clamp(24px,2.6vw,30px);margin:8px 0 10px}
.feature .intro{color:var(--muted);margin-bottom:24px}
.feature .go{display:inline-block;margin-top:20px;font-family:var(--f-mono);font-size:13px;letter-spacing:.08em;color:var(--accent-text)}
.feature:hover .go{color:var(--fg)}
.feature .sheet figcaption{font-family:var(--f-mono);font-size:12px;letter-spacing:.06em;color:#4A4A4A;margin-top:12px}
.cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px}
.feature+.cards{margin-top:48px;padding-top:36px;border-top:1px solid var(--hair)}
.card{display:flex;flex-direction:column;gap:14px;text-decoration:none;color:inherit;min-width:0}
.card[hidden]{display:none}
.ph{aspect-ratio:3/2;background:var(--panel);overflow:hidden;border:1.5px solid var(--line)}
.ph img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .5s ease}
.ph.whole{background:#fff}
.ph.whole img{object-fit:contain;padding:10px}
.ph.empty{display:flex;align-items:center;justify-content:center;font-family:var(--f-display);font-weight:900;font-size:64px;color:var(--panel-muted)}
.card:hover .ph img{transform:scale(1.03)}
.card .meta{display:flex;flex-direction:column;gap:6px}
.card h3{font-size:21px}
.card p{font-size:15px;color:var(--muted)}
.card:hover h3{color:var(--accent-text)}

/* sub-pages */
.page .phead{background:var(--panel);color:var(--panel-fg);border-bottom:6px solid var(--copper);padding-block:40px 36px}
.crumbs{color:var(--panel-muted)}
.crumbs a{color:var(--panel-muted);text-decoration:none}
.crumbs a:hover{color:var(--panel-fg)}
.phead h1{font-size:clamp(30px,5vw,60px);margin-top:14px;color:var(--panel-fg)}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.chips span{font-family:var(--f-mono);font-size:12px;letter-spacing:.08em;border:1px solid var(--copper);color:var(--panel-fg);padding:5px 10px}
.filters{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
.filters button{font-family:var(--f-mono);font-size:13px;letter-spacing:.06em;min-height:40px;padding:0 14px;background:transparent;color:var(--panel-fg);border:1.5px solid var(--panel-muted);cursor:pointer}
.filters button[aria-pressed="true"]{background:var(--copper);border-color:var(--copper);color:#1A2F4B;font-weight:700}
.pmain{padding-top:36px}
.cover{display:block;width:100%;padding:0;border:1.5px solid var(--line);background:var(--panel);cursor:zoom-in}
.cover img{display:block;width:100%;height:auto;max-height:78vh;object-fit:cover}
.cover.whole{background:#fff;padding:16px}
.cover.whole img{object-fit:contain}
.cap{margin-top:10px}
.pbody{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);gap:48px;margin-top:40px;align-items:start}
.desc p{max-width:66ch}
.desc p+p{margin-top:14px}
.pbody aside{display:flex;flex-direction:column;gap:22px}
.pbody aside .btn{align-self:flex-start;color:#1A2F4B}
.gallery{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;margin-top:56px}
.gallery figure{margin:0;min-width:0}
.gallery button{display:block;width:100%;padding:0;border:0;background:var(--panel);cursor:zoom-in}
.gallery img{display:block;width:100%;height:auto}
.gallery figcaption{font-family:var(--f-mono);font-size:12px;letter-spacing:.06em;color:var(--muted);margin-top:8px}
.pn{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:64px;border-top:1.5px solid var(--line)}
.pn a{color:var(--fg);letter-spacing:0;display:flex;flex-direction:column;gap:6px;padding:18px 0;text-decoration:none;font-family:var(--f-display);font-weight:900;font-size:20px;min-width:0}
.pn a+a{text-align:right;align-items:flex-end}
.pn a:hover{color:var(--accent-text)}
.lb{border:0;padding:0;max-width:100vw;max-height:100vh;width:100vw;height:100vh;background:rgba(10,18,30,.94);color:#E3E0D8}
.lb::backdrop{background:rgba(10,18,30,.6)}
.lb figure{margin:0;height:calc(100vh - 64px);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;padding:16px}
.lb img{max-width:100%;max-height:calc(100% - 40px);object-fit:contain;background:#fff}
.lb figcaption{font-family:var(--f-mono);font-size:12px;letter-spacing:.06em;color:#B7C0CC;text-align:center}
.lbbar{height:64px;display:flex;align-items:center;justify-content:flex-end;gap:8px;padding:0 16px}
.lbbar .cnt{margin-right:auto;color:#B7C0CC}
.lbbar button{width:48px;height:44px;font-size:22px;background:transparent;color:#E3E0D8;border:1.5px solid #B7C0CC;cursor:pointer}
.lbbar button:hover{background:#E3E0D8;color:#1A2F4B}
@media (max-width:900px){
  .feature,.pbody{grid-template-columns:1fr}
  .cards{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:560px){
  .cards,.gallery{grid-template-columns:1fr}
  .pn a{font-size:17px}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}.ph img{transition:none}}