/* 21 Structures — Relaunch Prototype v2 · "Blueprint" design system */
:root{
  --ink:#0b111a;
  --navy:#101c2e;
  --navy-2:#15263f;
  --slate:#4c5b70;
  --accent:#3b82d4;
  --accent-dark:#2c69b0;
  --accent-bright:#6aabf0;
  --bg:#ffffff;
  --bg-alt:#f4f6f9;
  --line:#e2e7ee;
  --on-dark:#c3cfde;
  --on-dark-dim:#7d8ea3;
  --radius:12px;
  --maxw:1160px;
  --font-display:'Space Grotesk','Inter',sans-serif;
  --font-mono:'JetBrains Mono',ui-monospace,monospace;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Inter',-apple-system,'Segoe UI',Roboto,sans-serif;color:var(--ink);background:var(--bg);line-height:1.65;font-size:16.5px;-webkit-font-smoothing:antialiased}
img,svg{max-width:100%;display:block}
a{color:var(--accent);text-decoration:none}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px}

h1,h2,h3{font-family:var(--font-display)}
h1{font-size:clamp(2.3rem,5.2vw,3.8rem);line-height:1.06;letter-spacing:-.025em;font-weight:700}
h2{font-size:clamp(1.6rem,3.2vw,2.4rem);line-height:1.15;letter-spacing:-.02em;font-weight:700;margin-bottom:.5em}
h3{font-size:1.18rem;font-weight:600;margin-bottom:.4em;letter-spacing:-.01em}
.lead{font-size:1.18rem;color:var(--slate);max-width:44em}

/* Mono kicker with index — technical drawing label */
.kicker{display:flex;align-items:center;gap:14px;font-family:var(--font-mono);font-size:.78rem;font-weight:500;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);margin-bottom:1.1em}
.kicker::after{content:"";flex:0 0 56px;height:1px;background:linear-gradient(90deg,var(--accent),transparent)}
.hero .kicker{color:var(--accent-bright)}

/* Blueprint grid backgrounds */
.bp{position:relative;overflow:hidden;background:
  linear-gradient(160deg,var(--ink) 0%,var(--navy) 62%,#182c49 100%)}
.bp::before{content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:52px 52px;
  mask-image:radial-gradient(ellipse 90% 90% at 60% 40%,#000 30%,transparent 100%)}
.bp>*{position:relative;z-index:1}

/* Header */
header{position:sticky;top:0;z-index:50;background:rgba(11,17,26,.82);backdrop-filter:blur(12px);border-bottom:1px solid rgba(255,255,255,.07);transition:background .3s,box-shadow .3s}
header.scrolled{background:rgba(11,17,26,.96);box-shadow:0 8px 30px rgba(0,0,0,.35)}
.nav{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{font-family:var(--font-display);font-weight:700;color:#fff;font-size:1.1rem;letter-spacing:.02em;display:flex;align-items:center;gap:11px}
.bmark{height:30px;width:auto;filter:invert(1) brightness(1.6)}
.brand span{color:var(--accent-bright)}
nav ul{display:flex;gap:30px;list-style:none;align-items:center}
nav a{color:var(--on-dark);font-size:.92rem;font-weight:500;position:relative;padding:4px 0}
nav a::after{content:"";position:absolute;left:0;bottom:-2px;width:0;height:2px;background:var(--accent-bright);transition:width .25s}
nav a:hover::after,nav a.active::after{width:100%}
nav a:hover,nav a.active{color:#fff}
.lang{color:var(--on-dark-dim);font-size:.82rem;font-family:var(--font-mono)}
.lang b{color:#fff;font-weight:500}
.lang a{color:var(--on-dark-dim)}
.lang a::after{content:none}
.lang a:hover{color:#fff}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:10px;background:var(--accent);color:#fff;font-weight:600;font-size:.95rem;padding:15px 30px;border-radius:9px;border:0;cursor:pointer;transition:background .2s,transform .2s,box-shadow .2s}
.btn::after{content:"→";transition:transform .25s}
.btn:hover{background:var(--accent-dark);transform:translateY(-2px);box-shadow:0 10px 30px rgba(59,130,212,.35)}
.btn:hover::after{transform:translateX(4px)}
.btn-ghost{background:transparent;border:1px solid rgba(255,255,255,.3);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.07);box-shadow:none}
.btn-ghost::after{content:none}

/* Hero */
.hero{color:#fff;padding:110px 0 90px}
.hero .wrap{display:grid;grid-template-columns:.92fr 1.08fr;gap:36px;align-items:center}
.hero .lead{color:var(--on-dark);margin:24px 0 38px}
.hero .actions{display:flex;gap:16px;flex-wrap:wrap}
.page-hero{padding:84px 0 64px}
.page-hero .wrap{display:block}

/* Hero headline entrance */
.rise{opacity:0;transform:translateY(26px);animation:rise .8s cubic-bezier(.2,.7,.2,1) forwards}
.rise.d1{animation-delay:.12s}.rise.d2{animation-delay:.24s}.rise.d3{animation-delay:.38s}
@keyframes rise{to{opacity:1;transform:none}}

/* Hero 3D model */
.hero3d{position:relative;cursor:grab;user-select:none;touch-action:pan-y}
.hero3d.grabbing{cursor:grabbing}
.hero3d canvas{display:block;width:100%;height:auto}
.hero3d .hud{position:absolute;left:8px;bottom:4px;font-family:var(--font-mono);font-size:.7rem;letter-spacing:.1em;color:var(--on-dark-dim);pointer-events:none}

/* Hero structure drawing */
.structure{width:100%;height:auto}
.structure .draw{fill:none;stroke:var(--accent-bright);stroke-width:1.4;stroke-linecap:round;stroke-dasharray:1;stroke-dashoffset:1;animation:draw 2.2s cubic-bezier(.5,0,.2,1) forwards}
.structure .draw.soft{stroke:rgba(122,168,224,.45);stroke-width:1}
.structure .d1{animation-delay:.2s}.structure .d2{animation-delay:.55s}.structure .d3{animation-delay:.9s}.structure .d4{animation-delay:1.25s}.structure .d5{animation-delay:1.6s}
@keyframes draw{to{stroke-dashoffset:0}}
.structure .glass{fill:rgba(106,171,240,.09);stroke:none;opacity:0;animation:pop 1.4s ease forwards .9s}
.structure .node{fill:var(--accent-bright);opacity:0;animation:pop .4s ease forwards 2.1s}
@keyframes pop{to{opacity:1}}
.structure text{font-family:var(--font-mono);font-size:10.5px;fill:var(--on-dark-dim);opacity:0;animation:pop .6s ease forwards 2.3s}
.structure .dim{stroke:var(--on-dark-dim);stroke-width:.8}

/* Trust bar with counters */
.trust{background:rgba(255,255,255,.03);border-top:1px solid rgba(255,255,255,.08);color:var(--on-dark);padding:26px 0}
.trust .wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.trust .item{text-align:center;border-left:1px solid rgba(255,255,255,.1);padding:2px 10px}
.trust .item:first-child{border-left:0}
.trust .big{font-family:var(--font-mono);font-size:1.7rem;font-weight:500;color:#fff;line-height:1.2}
.trust .big small{font-size:1.05rem;color:var(--accent-bright)}
.trust .lbl{font-size:.78rem;letter-spacing:.05em;text-transform:uppercase;color:var(--on-dark-dim)}

/* Sections */
section.block{padding:96px 0}
section.alt{background:var(--bg-alt)}
.grid{display:grid;gap:28px}
.g3{grid-template-columns:repeat(3,1fr)}
.g2{grid-template-columns:repeat(2,1fr)}

/* Scroll reveal */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s cubic-bezier(.2,.7,.2,1),transform .7s cubic-bezier(.2,.7,.2,1);transition-delay:var(--d,0s)}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  .reveal,.rise{opacity:1;transform:none;animation:none;transition:none}
  .structure .draw{stroke-dashoffset:0;animation:none}
  .structure .node,.structure text{opacity:1;animation:none}
}

/* Cards */
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px;transition:transform .3s,box-shadow .3s,border-color .3s;position:relative}
.card:hover{transform:translateY(-5px);box-shadow:0 18px 44px rgba(16,28,46,.1);border-color:#c9d7e8}
.card p{color:var(--slate);font-size:.96rem}
.card .idx{font-family:var(--font-mono);font-size:.75rem;color:var(--accent);letter-spacing:.1em;display:block;margin-bottom:14px}

/* Project cards */
.pcard{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;transition:transform .3s,box-shadow .3s,border-color .3s}
.pcard:hover{transform:translateY(-5px);box-shadow:0 18px 44px rgba(16,28,46,.12);border-color:#c9d7e8}
.pcard .body{padding:24px 26px 26px}
.pcard .meta{font-family:var(--font-mono);font-size:.74rem;letter-spacing:.06em;text-transform:uppercase;color:var(--slate);margin-bottom:10px}
.pcard p{color:var(--slate);font-size:.95rem;margin-bottom:16px}
.tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:auto}
.tag{font-family:var(--font-mono);font-size:.72rem;font-weight:500;color:var(--navy);background:var(--bg-alt);border:1px solid var(--line);padding:4px 11px;border-radius:99px}

/* Blueprint image placeholder */
.ph{position:relative;background:linear-gradient(150deg,var(--navy),var(--navy-2));aspect-ratio:16/9;display:flex;align-items:center;justify-content:center;color:var(--on-dark-dim);font-family:var(--font-mono);font-size:.76rem;text-align:center;padding:18px;overflow:hidden}
.ph::before{content:"";position:absolute;inset:0;background-image:
  linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),
  linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:26px 26px}
.ph::after{content:"+";position:absolute;top:8px;left:12px;color:var(--accent-bright);font-size:.9rem;opacity:.7;text-shadow:0 0 0 currentColor}
.ph span{position:relative;border:1px dashed rgba(122,168,224,.4);border-radius:6px;padding:10px 16px;background:rgba(11,17,26,.35)}
.ph.tall{aspect-ratio:4/5;border-radius:var(--radius)}
.portrait{width:100%;aspect-ratio:4/5;object-fit:cover;border-radius:var(--radius);border:1px solid var(--line)}
.pcard .ph{border-bottom:1px solid rgba(255,255,255,.06)}
.pcard:hover .ph span{border-color:rgba(122,168,224,.8)}

/* Real project photos */
.pimg{position:relative;overflow:hidden;aspect-ratio:16/9;background:linear-gradient(150deg,var(--navy),var(--navy-2));border-bottom:1px solid var(--line)}
.pimg img{width:100%;height:100%;object-fit:cover;transition:transform .6s cubic-bezier(.2,.7,.2,1)}
.pcard:hover .pimg img{transform:scale(1.05)}

/* Form result banner */
.formbanner{padding:14px 18px;border-radius:9px;font-size:.95rem;margin-bottom:22px;font-weight:500}
.formbanner.ok{background:#e8f4ea;color:#1d6b34;border:1px solid #bfe0c8}
.formbanner.err{background:#fbecec;color:#9a2c2c;border:1px solid #eec6c6}

/* Dimension-line divider (technical drawing style) */
.dim-rule{display:flex;align-items:center;gap:0;margin:14px 0 34px;color:var(--line)}
.dim-rule::before,.dim-rule::after{content:"";width:1px;height:12px;background:currentColor}
.dim-rule i{flex:1;height:1px;background:currentColor}
.dim-rule b{font-family:var(--font-mono);font-size:.72rem;font-weight:400;color:var(--slate);padding:0 14px;letter-spacing:.08em}

/* CTA band */
.cta{color:#fff;text-align:center;padding:100px 0}
.cta p{color:var(--on-dark);max-width:38em;margin:14px auto 34px}

/* Forms */
form{display:grid;gap:20px}
.frow{display:grid;grid-template-columns:1fr 1fr;gap:20px}
label{font-size:.84rem;font-weight:600;display:block;margin-bottom:7px}
label .req{color:var(--accent)}
input,select,textarea{width:100%;font:inherit;font-size:.95rem;padding:12px 14px;border:1px solid var(--line);border-radius:9px;background:#fff;color:var(--ink);transition:border-color .2s,box-shadow .2s}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(59,130,212,.18)}
.formnote{font-size:.85rem;color:var(--slate)}

/* Steps */
.step .num{display:inline-flex;width:40px;height:40px;border-radius:50%;border:1.5px solid var(--accent);color:var(--accent);background:#fff;align-items:center;justify-content:center;font-family:var(--font-mono);font-weight:500;font-size:.95rem;margin-bottom:16px}
.step{position:relative}
.steps{position:relative}
.steps::before{content:"";position:absolute;top:20px;left:6%;right:6%;height:1px;background:repeating-linear-gradient(90deg,var(--line) 0 8px,transparent 8px 16px);z-index:0}
.step{z-index:1;background:transparent}
.step .num{position:relative;z-index:1}

/* Lists */
.checks{list-style:none;display:grid;gap:12px}
.checks li{padding-left:30px;position:relative;color:var(--slate)}
.checks li::before{content:"✓";position:absolute;left:0;color:var(--accent);font-weight:700}
.checks b{color:var(--ink)}

/* Stat inline (about) */
.statline{display:flex;gap:40px;margin-top:34px;flex-wrap:wrap}
.statline div{border-left:2px solid var(--accent);padding-left:16px}
.statline .big{font-family:var(--font-mono);font-size:1.6rem;color:var(--ink);line-height:1.2}
.statline .lbl{font-size:.8rem;color:var(--slate);text-transform:uppercase;letter-spacing:.05em}

/* Legal pages */
.legal{max-width:760px}
.legal h2{font-size:1.2rem;margin:2em 0 .5em}
.legal h2:first-child{margin-top:0}
.legal p{color:var(--slate);margin-bottom:1em}
.legal strong{color:var(--ink)}

/* Footer */
footer{background:var(--ink);color:#7d8898;padding:52px 0;font-size:.88rem;border-top:1px solid rgba(255,255,255,.06)}
footer .wrap{display:flex;flex-wrap:wrap;gap:18px 44px;justify-content:space-between;align-items:center}
footer a{color:#b3bece}
footer a:hover{color:#fff}
footer nav{display:flex;gap:24px}
footer .fmono{font-family:var(--font-mono);font-size:.78rem;color:#5c6879}

@media(max-width:900px){
  .g3,.g2,.frow{grid-template-columns:1fr}
  .hero .wrap{grid-template-columns:1fr}
  .hero .art{display:none}
  .trust .wrap{grid-template-columns:repeat(2,1fr);gap:24px 12px}
  .trust .item{border-left:0}
  nav ul{gap:16px;flex-wrap:wrap}
  .nav{flex-wrap:wrap;height:auto;padding:12px 0}
  .hero{padding:70px 0 56px}
  section.block{padding:64px 0}
  .steps::before{content:none}
}