/* Martinz SPb — общий дизайн-сет сайтов (тёмная тема, акцент через --accent) */
:root{
  --bg:#070b16;--bg2:#0b1120;--card:rgba(255,255,255,.045);--card2:rgba(255,255,255,.07);
  --line:rgba(255,255,255,.09);--text:#e9edf5;--muted:#97a3bb;
  --navbg:rgba(7,11,22,.72);--menubg:rgba(7,11,22,.97);
  --accent:#6366f1;--accent2:#38bdf8;
  --r:18px;color-scheme:dark;
}
html[data-theme="light"]{
  --bg:#f4f7fc;--bg2:#ffffff;--card:rgba(15,23,42,.045);--card2:rgba(15,23,42,.07);
  --line:rgba(15,23,42,.11);--text:#101828;--muted:#5c6b84;
  --navbg:rgba(255,255,255,.78);--menubg:rgba(255,255,255,.97);
  color-scheme:light;
}
html[data-theme="light"] .glow{opacity:.14}
html[data-theme="light"] .glow.a{opacity:.2}
html[data-theme="light"] .phone,html[data-theme="light"] .shot-raw,html[data-theme="light"] .icon-big,html[data-theme="light"] .doc-sheet{box-shadow:0 30px 60px -20px rgba(15,23,42,.35),0 0 0 1px var(--line)}
html[data-theme="light"] .proj img,html[data-theme="light"] .nav img,html[data-theme="light"] .foot img{box-shadow:0 6px 18px -6px rgba(15,23,42,.25)}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--text);font:16px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.wrap{max-width:1120px;margin:0 auto;padding:0 22px}
section{padding:84px 0}
h1,h2,h3{line-height:1.15;letter-spacing:-.02em}
.muted{color:var(--muted)}

/* glow + grain */
.glow{position:absolute;border-radius:50%;filter:blur(90px);opacity:.5;pointer-events:none}
.glow.a{width:560px;height:560px;background:var(--accent);top:-160px;right:-120px;opacity:.28}
.glow.b{width:420px;height:420px;background:var(--accent2);bottom:-160px;left:-140px;opacity:.16}

/* nav */
header{position:fixed;inset:0 0 auto;z-index:50;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);background:var(--navbg);border-bottom:1px solid var(--line);transition:box-shadow .3s}
header.scrolled{box-shadow:0 8px 30px rgba(0,0,0,.35)}
.nav{display:flex;align-items:center;gap:12px;height:66px}
.nav img{width:36px;height:36px;border-radius:9px}
.nav .mark{width:36px;height:36px;border-radius:10px;display:grid;place-items:center;font-weight:800;font-size:19px;color:#fff;background:linear-gradient(135deg,var(--accent),var(--accent2))}
.nav .brand{font-weight:700;font-size:17px;letter-spacing:-.01em}
.nav .brand small{display:block;font-weight:500;font-size:11px;color:var(--muted);letter-spacing:.08em;text-transform:uppercase}
.nav-links{margin-left:auto;display:flex;gap:26px;align-items:center}
.nav-links a{color:var(--muted);font-size:14.5px;font-weight:500;transition:color .2s}
.nav-links a:hover{color:var(--text)}
.nav-links .btn{padding:9px 18px;font-size:14px}
.burger{display:none;background:none;border:1px solid var(--line);border-radius:10px;padding:9px 11px;color:var(--text);cursor:pointer}
.burger svg{display:block}
.theme-btn{margin-left:10px;background:var(--card);border:1px solid var(--line);border-radius:10px;padding:8px 10px;color:var(--text);cursor:pointer;line-height:0;transition:background .2s}
.theme-btn:hover{background:var(--card2)}
.theme-btn svg{display:block}
html[data-theme="light"] .ic-sun{display:none}
html:not([data-theme="light"]) .ic-moon{display:none}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:9px;padding:13px 24px;border-radius:13px;font-weight:600;font-size:15px;border:1px solid transparent;cursor:pointer;transition:transform .18s,box-shadow .18s,background .18s}
.btn:active{transform:scale(.97)}
.btn-p{background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff;box-shadow:0 10px 30px -8px var(--accent)}
.btn-p:hover{transform:translateY(-2px);box-shadow:0 16px 38px -8px var(--accent)}
.btn-g{border-color:var(--line);color:var(--text);background:var(--card)}
.btn-g:hover{background:var(--card2)}

/* hero */
.hero{position:relative;padding:170px 0 90px;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.badge{display:inline-flex;align-items:center;gap:8px;padding:7px 15px;border:1px solid var(--line);border-radius:999px;background:var(--card);font-size:13px;color:var(--muted);font-weight:500}
.badge i{width:7px;height:7px;border-radius:50%;background:var(--accent2);font-style:normal;box-shadow:0 0 10px var(--accent2)}
.hero h1{font-size:clamp(34px,5.2vw,58px);font-weight:800;margin:22px 0 18px}
.hero h1 .grad{background:linear-gradient(100deg,var(--accent),var(--accent2));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.sub{font-size:18px;color:var(--muted);max-width:520px}
.hero .actions{display:flex;gap:14px;margin-top:32px;flex-wrap:wrap}
.hero .meta{margin-top:18px;font-size:13.5px;color:var(--muted)}

/* hero visual */
.hero-visual{position:relative;display:flex;justify-content:center}
.hero-visual .float{animation:float 6s ease-in-out infinite}
@keyframes float{0%,100%{transform:translateY(0) rotate(-2deg)}50%{transform:translateY(-14px) rotate(-2deg)}}
.icon-big{width:190px;height:190px;border-radius:44px;box-shadow:0 40px 90px -20px rgba(0,0,0,.7),0 0 0 1px var(--line)}
.phone{width:238px;aspect-ratio:9/19.7;border-radius:36px;border:9px solid #141b2d;box-shadow:0 40px 80px -24px rgba(0,0,0,.8),0 0 0 1px var(--line);overflow:hidden;background:#000}
.phone img{width:100%;height:100%;object-fit:cover;object-position:top}
.shot-raw{width:238px;border-radius:30px;box-shadow:0 40px 80px -24px rgba(0,0,0,.8),0 0 0 1px var(--line)}

/* css-мокап документа (doc) */
.doc-sheet{width:250px;background:#fff;border-radius:14px;padding:26px 22px;color:#1f2937;box-shadow:0 40px 80px -20px rgba(0,0,0,.7);transform:rotate(-2deg)}
.doc-sheet .dh{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}
.doc-sheet .dh b{font-size:14px}
.doc-sheet .num{font-size:11px;color:#6b7280}
.doc-line{height:8px;border-radius:4px;background:#e5e7eb;margin:9px 0}
.doc-line.short{width:60%}
.doc-line.mid{width:80%}
.doc-total{margin-top:16px;display:flex;justify-content:space-between;font-size:12px;color:#374151;border-top:2px solid #e5e7eb;padding-top:10px}
.doc-total b{color:var(--accent);font-size:16px}
.doc-stamp{position:absolute;width:74px;height:74px;border:3px solid var(--accent);border-radius:50%;display:grid;place-items:center;color:var(--accent);font-size:10px;font-weight:700;transform:rotate(12deg);right:-18px;bottom:34px;background:rgba(255,255,255,.86);text-align:center;line-height:1.2;opacity:.92}
.hero-visual.docv{position:relative}

/* stats */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.stat{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:26px 22px;text-align:center}
.stat b{display:block;font-size:32px;font-weight:800;background:linear-gradient(100deg,var(--accent),var(--accent2));-webkit-background-clip:text;background-clip:text;color:transparent}
.stat span{font-size:13.5px;color:var(--muted)}

/* features */
.sec-head{max-width:640px;margin-bottom:44px}
.sec-head .kicker{color:var(--accent2);font-size:13px;font-weight:700;letter-spacing:.14em;text-transform:uppercase}
.sec-head h2{font-size:clamp(26px,3.6vw,40px);font-weight:800;margin:12px 0 14px}
.sec-head p{color:var(--muted);font-size:16.5px}
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.feat{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:28px 26px;transition:transform .25s,border-color .25s,background .25s}
.feat:hover{transform:translateY(-5px);border-color:rgba(255,255,255,.18);background:var(--card2)}
.feat .ic{width:46px;height:46px;border-radius:13px;display:grid;place-items:center;font-size:22px;background:linear-gradient(135deg,var(--accent),var(--accent2));margin-bottom:18px;box-shadow:0 8px 22px -6px var(--accent)}
.feat h3{font-size:17.5px;margin-bottom:9px;font-weight:700}
.feat p{font-size:14.5px;color:var(--muted)}

/* screens */
.screens{display:flex;gap:22px;overflow-x:auto;padding:10px 4px 26px;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch}
.screens::-webkit-scrollbar{height:8px}
.screens::-webkit-scrollbar-thumb{background:var(--line);border-radius:4px}
.screens .phone,.screens .shot-raw{flex:0 0 auto;scroll-snap-align:center;width:236px}
.screens .shot-raw{border-radius:28px}

/* steps (how it works) */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;counter-reset:st}
.step{position:relative;background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:60px 26px 28px}
.step::before{counter-increment:st;content:counter(st);position:absolute;top:20px;left:26px;font-size:30px;font-weight:800;color:transparent;-webkit-text-stroke:1.5px var(--accent2)}
.step h3{font-size:16.5px;margin-bottom:8px}
.step p{font-size:14px;color:var(--muted)}

/* cta */
.cta{position:relative;overflow:hidden;border-radius:26px;border:1px solid var(--line);background:linear-gradient(135deg,color-mix(in srgb,var(--accent) 26%,transparent),color-mix(in srgb,var(--accent2) 16%,transparent)),var(--bg2);padding:60px 46px;text-align:center}
.cta h2{font-size:clamp(26px,3.4vw,38px);font-weight:800;margin-bottom:14px}
.cta p{color:var(--muted);max-width:520px;margin:0 auto 30px}
.cta .btns{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* project cards (hub) */
.projects{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.proj{display:flex;gap:20px;background:var(--card);border:1px solid var(--line);border-radius:22px;padding:26px;transition:transform .25s,border-color .25s}
.proj:hover{transform:translateY(-5px);border-color:rgba(255,255,255,.2)}
.proj img{width:76px;height:76px;border-radius:22px;flex:0 0 auto}
.proj h3{font-size:19px;display:flex;align-items:center;gap:9px}
.proj h3 .arr{margin-left:auto;color:var(--muted);transition:transform .2s,color .2s}
.proj:hover h3 .arr{transform:translateX(4px);color:var(--accent2)}
.proj .tag{font-size:12px;color:var(--accent2);font-weight:600;letter-spacing:.06em;text-transform:uppercase}
.proj p{font-size:14px;color:var(--muted);margin-top:8px}

/* footer */
footer{border-top:1px solid var(--line);padding:40px 0 34px;margin-top:20px}
.foot{display:flex;justify-content:space-between;align-items:center;gap:18px;flex-wrap:wrap}
.foot .l{display:flex;align-items:center;gap:11px}
.foot img{width:30px;height:30px;border-radius:8px}
.foot .mark{width:30px;height:30px;border-radius:8px;display:grid;place-items:center;font-weight:800;font-size:15px;color:#fff;background:linear-gradient(135deg,var(--accent),var(--accent2))}
.foot nav{display:flex;gap:20px;flex-wrap:wrap}
.foot nav a{font-size:13.5px;color:var(--muted)}
.foot nav a:hover{color:var(--text)}
.foot .copy{font-size:13px;color:var(--muted);width:100%;margin-top:6px}

/* reveal */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s cubic-bezier(.2,.65,.3,1),transform .7s cubic-bezier(.2,.65,.3,1)}
.reveal.in{opacity:1;transform:none}
.reveal.d1{transition-delay:.08s}.reveal.d2{transition-delay:.16s}.reveal.d3{transition-delay:.24s}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none}.hero-visual .float{animation:none}}

/* mobile */
@media(max-width:900px){
  section{padding:60px 0}
  .hero{padding:132px 0 60px}
  .hero-grid{grid-template-columns:1fr;gap:44px}
  .hero-visual{order:-1}
  .icon-big{width:140px;height:140px;border-radius:34px}
  .phone,.shot-raw{width:200px}
  .screens .phone,.screens .shot-raw{width:196px}
  .stats{grid-template-columns:repeat(2,1fr)}
  .features{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .projects{grid-template-columns:1fr}
  .cta{padding:44px 24px}
  .burger{display:block}
  .theme-btn{margin-left:auto}
  .nav-links{position:fixed;top:66px;right:0;left:0;flex-direction:column;background:var(--menubg);backdrop-filter:blur(20px);padding:22px;border-bottom:1px solid var(--line);transform:translateY(-140%);transition:transform .3s;gap:8px}
  .nav-links.open{transform:none}
  .nav-links a{padding:10px 0;width:100%;text-align:center;font-size:16px}
}