/* ============================================================
   FGD — Future Generation Design
   Dark industrial / engineering design system
   ============================================================ */

:root{
  /* palette v2 — same steel+sand base, refined: deeper cleaner steel, calmer sand */
  --bg:        #434B57;
  --bg-2:      #4C5562;
  --bg-3:      #4D5866;
  --bg-4:      #606B79;
  --line:      #59636F;
  --line-2:    #737E8D;
  --text:      #F3EDDE;
  --heading:   #FBF3E2;
  --text-dim:  #FBF3E2;
  --text-mute: #BFB8A3;
  --on-accent: #272C33;

  /* accent */
  --accent:     #F4D89B;
  --accent-hi:  rgb(246,222,171);
  --accent-dim: rgba(244,216,155,.14);
  --accent-line:rgba(244,216,155,.4);
  --header-bg: rgba(52,58,66,.90);
  --header-solid: rgba(45,51,58,.97);
  --tab-bg: #363D46;
  --tab-bg-active: #5D6878;
  --halo: rgba(26,30,36,.60);
  --outline: rgba(20,23,28,.55);
  --outline-w: .9px;
  --outline-w-sm: .55px;
  --overlay-bg: rgba(60,67,76,.97);
  --page-grad: radial-gradient(ellipse 120% 90% at 50% 30%,#57626F 0%,#47505B 48%,#31373F 88%,#282D34 100%);
  --grid-opacity:.10;

  /* type */
  /* Bank Gothic остаётся первым: у кого он установлен в системе, видит оригинал.
     Веб-лицензии на него нет, поэтому всем остальным достаётся Michroma — она
     из открытых шрифтов ближе всего по характеру. Play — последний рубеж. */
  --font-display:'Bank Gothic LT','BankGothic Lt BT','BankGothicLtBT','Bank Gothic','BankGothic Md BT','Michroma','Play',sans-serif;
  --font-body:   'Saira',system-ui,sans-serif;
  --font-mono:   'Space Mono','SFMono-Regular',monospace;

  /* metrics */
  --maxw: 1280px;
  --pad:  clamp(20px,5vw,72px);
  --section-y: clamp(96px,12vw,168px);
  --radius: 3px;

  --ease: cubic-bezier(.22,.61,.36,1);
}

/* ---- sand-gray theme: warm greige backdrop, graphite type, high contrast ---- */
body[data-theme="sand"],body[data-theme="light"]{
  --bg:        #ADA593;
  --bg-2:      #B7B0A0;
  --bg-3:      #C2BCAD;
  --bg-4:      #CDC8BB;
  --line:      #968E7D;
  --line-2:    #7B7464;
  --text:      #26241E;
  --heading:   #14120D;
  --text-dim:  #14120D;
  --text-mute: #4A4638;
  --on-accent: #FFF9EC;
  --accent:     #402C08;
  --accent-hi:  #5A3F0F;
  --accent-dim: rgba(64,44,8,.14);
  --accent-line:rgba(64,44,8,.42);
  --header-bg: rgba(194,188,173,.90);
  --header-solid: rgba(186,180,164,.97);
  --tab-bg: #A9A18F;
  --tab-bg-active: #C2BCAD;
  --halo: rgba(255,251,240,.62);
  --outline: #FFFCF4;
  --outline-w: 1.1px;
  --outline-w-sm: .7px;
  --overlay-bg: rgba(183,176,160,.97);
  --page-grad: radial-gradient(ellipse 120% 95% at 50% 18%,#B4AD9B 0%,#ADA593 45%,#A69E8C 100%);
  --grid-opacity:.16;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

body{
  background:var(--bg);
  background-image:var(--page-grad);
  background-attachment:fixed;
  color:var(--text);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}

/* blueprint grid texture overlaid on the whole page, very subtle */
body::before{
  content:"";
  position:fixed;inset:0;
  background-image:
    linear-gradient(var(--line) 1px,transparent 1px),
    linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:64px 64px;
  opacity:var(--grid-opacity);
  pointer-events:none;
  z-index:0;
  -webkit-mask-image:radial-gradient(ellipse 90% 80% at 50% 0,#000,transparent 78%);
          mask-image:radial-gradient(ellipse 90% 80% at 50% 0,#000,transparent 78%);
}

/* tweak hooks */
body[data-grid="off"]::before{display:none}
body[data-hero="minimal"] .hero-net{opacity:.18}

a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
button{font-family:inherit;cursor:pointer}

.wrap{max-width:var(--maxw);margin:0 auto;padding-inline:var(--pad);position:relative;z-index:1}

/* ---- shared type ------------------------------------------------ */
/* contrast outline separates type from the background */
.kicker,.nav a,.brand .full,.scroll-cue,.svc-idx,.ftag,.ptag,.pconf,.spec .k,.spec .vv,.cdetail .cl,.cdetail .cv,.hero-meta .item .l,.hero-meta .item .v,.field label,.viewer-cap,.footer-nav a,.footer-copy,.lead{-webkit-text-stroke:var(--outline-w-sm) var(--outline);paint-order:stroke fill}

.kicker{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--text-mute);
  display:inline-flex;align-items:center;gap:12px;
}
.kicker::before{
  content:"";
  width:26px;height:1px;background:var(--accent);
  display:inline-block;
}
.kicker .idx{color:var(--accent)}
body[data-theme="sand"] .kicker .idx,body[data-theme="light"] .kicker .idx{color:var(--accent)}

h1,h2,h3{font-family:var(--font-display);font-weight:400;line-height:1.12;letter-spacing:.02em;text-transform:uppercase;color:var(--heading);-webkit-text-stroke:var(--outline-w) var(--outline);paint-order:stroke fill}
.display{
  font-size:clamp(27px,3.1vw,48px);
  line-height:1.13;
  letter-spacing:.015em;
  text-wrap:balance;
}
.h2{font-size:clamp(24px,3vw,42px)}
.lead{
  font-size:clamp(17px,1.4vw,20px);
  color:var(--accent);
  max-width:56ch;
  line-height:1.65;
}
.mono{font-family:var(--font-mono)}
.accent{color:var(--accent)}

/* section frame */
.section{padding-block:var(--section-y);position:relative}
.section + .section{border-top:1px solid var(--line)}
.section-head{display:flex;flex-direction:column;gap:22px;margin-bottom:clamp(44px,6vw,76px)}

/* ================================================================
   HEADER
   ================================================================ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:50;
  background:var(--header-bg);
  -webkit-backdrop-filter:blur(16px) saturate(1.3);
          backdrop-filter:blur(16px) saturate(1.3);
  border-bottom:1px solid var(--line);
  transition:background .4s var(--ease),border-color .4s var(--ease),box-shadow .4s var(--ease);
}
.site-header.scrolled{
  background:var(--header-solid);
  border-bottom-color:var(--accent-line);
  box-shadow:0 10px 28px rgba(0,0,0,.22);
}
.header-inner{
  max-width:var(--maxw);margin:0 auto;
  padding:18px var(--pad);
  display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.brand{display:flex;align-items:center;gap:14px}
.brand .mark{width:38px;height:34px;flex:none}
.brand .wordmark{display:flex;flex-direction:column;line-height:1}
.brand .fgd{font-family:var(--font-display);font-weight:700;font-size:20px;letter-spacing:.06em}
.brand .full{font-family:var(--font-mono);font-size:9px;letter-spacing:.26em;color:var(--accent);text-transform:uppercase;margin-top:8px;white-space:nowrap}

.nav{display:flex;align-items:center;gap:34px}
.nav a{
  font-family:var(--font-mono);font-size:14px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--text);position:relative;padding:8px 0;transition:color .25s;
}
.nav a .n{color:var(--accent);font-size:12px;margin-right:6px}
.nav a::after{content:"";position:absolute;left:0;bottom:0;height:1px;width:0;background:var(--accent);transition:width .3s var(--ease)}
.nav a:hover{color:var(--accent)}
.nav a:hover::after{width:100%}

.lang{display:flex;border:1px solid var(--line-2);border-radius:var(--radius);overflow:hidden}
.lang button{
  background:transparent;border:none;color:var(--text-mute);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;
  padding:7px 11px;transition:.2s;
}
.lang button.active{background:var(--accent);color:var(--on-accent)}
.lang button:not(.active):hover{color:var(--text)}

.menu-toggle{display:none;background:none;border:1px solid var(--line-2);border-radius:var(--radius);width:42px;height:38px;color:var(--text)}
.menu-toggle span{display:block;width:18px;height:1.5px;background:currentColor;margin:3px auto;transition:.3s}

/* ================================================================
   HERO / ABOUT
   ================================================================ */
/* hero: title/lead left, logo right spanning exactly their height, meta full-width below */
.hero{position:relative;min-height:100svh;display:flex;align-items:center;padding-top:120px;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:2.2fr 1fr;grid-template-rows:auto auto auto auto;column-gap:clamp(32px,5vw,80px);row-gap:34px;align-items:stretch;max-width:var(--maxw);width:100%}
.hg-kicker{grid-column:1;grid-row:1}
.hg-title{grid-column:1;grid-row:2}
.hg-lead{grid-column:1;grid-row:3;color:var(--accent)}
.hero-logo{grid-column:2;grid-row:2/4;color:var(--accent);display:flex;align-items:stretch;justify-content:center;min-height:0;position:relative}
.hero-logo svg{position:absolute;inset:0;height:100%;width:100%;display:block}
.hero-meta{grid-column:1/-1;grid-row:4}
.hero h1{max-width:28ch}
.hero h1 .o{display:inline-block;overflow:hidden}
.hero-sub{display:flex;flex-wrap:wrap;gap:48px;align-items:flex-end;margin-top:8px}
.hero-meta{display:flex;gap:40px;flex-wrap:wrap;padding-top:26px;position:relative}
.hero-meta::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:var(--line)}
.hero-meta .item .l{font-family:var(--font-mono);font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:var(--text-mute)}
.hero-meta .item .v{font-family:var(--font-display);font-size:clamp(14px,1.2vw,17px);font-weight:400;margin-top:8px;text-transform:uppercase;color:var(--heading);letter-spacing:.02em;line-height:1.3}

.scroll-cue{position:absolute;bottom:28px;left:var(--pad);font-family:var(--font-mono);font-size:11px;letter-spacing:.2em;color:var(--text-mute);text-transform:uppercase;display:flex;align-items:center;gap:12px;z-index:2}
.scroll-cue .bar{width:1px;height:34px;background:linear-gradient(var(--accent),transparent);display:inline-block}

/* ================================================================
   SERVICES
   ================================================================ */
/* featured powerpack band */
.feature{
  display:grid;grid-template-columns:1.08fr .92fr;gap:clamp(28px,4vw,60px);
  align-items:stretch;margin-bottom:clamp(28px,3.5vw,48px);
}
/* stage matches the text column height; render fits inside on a light studio bg like the renders themselves */
.feature .viewer-stage{flex:1;aspect-ratio:auto;min-height:0;background:linear-gradient(180deg,#F2F2F2 0%,#E4E4E4 55%,#CFCFCF 100%)}
.feature .viewer-pane img{object-fit:cover;object-position:50% 55%}
.feature-text{display:flex;flex-direction:column;justify-content:space-between;gap:14px}
.feature-text h3{margin:10px 0 0}
.feature-text p{margin-bottom:0}
.feature-text .ftag{font-family:var(--font-mono);font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:var(--accent)}
.feature-text h3{font-size:clamp(21px,2.3vw,33px);margin:16px 0 18px;max-width:20ch;line-height:1.18}
.feature-text p{color:var(--accent);max-width:46ch;margin-bottom:24px}
.feature-text .svc-list{list-style:none;display:flex;flex-direction:column;gap:11px}
.feature-text .svc-list li{font-family:var(--font-mono);font-size:13px;letter-spacing:.03em;color:var(--text-mute);display:flex;gap:12px;align-items:baseline}
.feature-text .svc-list li::before{content:"";width:6px;height:6px;background:var(--accent);flex:none;transform:translateY(-2px)}

.services-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.svc{
  background:var(--bg);
  padding:clamp(28px,2.8vw,42px);
  display:flex;flex-direction:column;gap:12px;
  position:relative;transition:background .35s var(--ease);
}
.svc:hover{background:var(--bg-2)}
.svc .svc-idx{font-family:var(--font-mono);font-size:12px;letter-spacing:.2em;color:var(--accent)}
.svc .svc-ico{width:44px;height:44px;color:var(--text-dim);transition:color .35s}
.svc:hover .svc-ico{color:var(--accent)}
.svc h3{font-size:clamp(16px,1.45vw,21px);line-height:1.22}
.svc p{color:var(--accent);line-height:1.55;font-size:15.5px}
.svc .svc-list{list-style:none;display:flex;flex-direction:column;gap:8px;margin-top:auto;padding-top:8px}
.svc .svc-list li{font-family:var(--font-mono);font-size:12px;letter-spacing:.04em;color:var(--text-mute);display:flex;gap:10px;align-items:baseline}
.svc .svc-list li::before{content:"";width:5px;height:5px;background:var(--accent);flex:none;transform:translateY(-2px)}

/* ================================================================
   PRODUCTS
   ================================================================ */
.product{display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,4vw,64px);align-items:stretch}
.product-info{display:flex;flex-direction:column}
.product + .product{margin-top:clamp(56px,8vw,110px);padding-top:clamp(56px,8vw,110px);border-top:1px solid var(--line)}
.product-info .ptag{font-family:var(--font-mono);font-size:12px;letter-spacing:.18em;color:var(--accent);text-transform:uppercase}
.product-info h3{font-size:clamp(32px,3.6vw,52px);margin:14px 0 8px;line-height:1.08}
.product-info .pconf{font-family:var(--font-display);font-size:clamp(14px,1.2vw,18px);color:var(--text-dim);text-transform:uppercase;letter-spacing:.03em}
.product-info p{color:var(--accent);margin:22px 0 30px;max-width:42ch}

.spec{border-top:1px solid var(--line);width:100%;margin-top:auto}
.spec .row{display:flex;justify-content:space-between;gap:18px;padding:13px 0;border-bottom:1px solid var(--line)}
.spec .row .k{font-family:var(--font-mono);font-size:12px;letter-spacing:.1em;color:var(--text-mute);text-transform:uppercase}
.spec .row .vv{font-family:var(--font-display);font-size:14px;font-weight:700;letter-spacing:.03em;text-transform:uppercase;text-align:right;white-space:nowrap}
.spec .row .vv.is-ph{color:var(--text-mute);font-family:var(--font-mono);font-weight:400;font-size:12px;letter-spacing:.06em}

/* media viewer — stretches to match the text column exactly */
.viewer{position:relative;display:flex;flex-direction:column}
.viewer-stage{flex:1;min-height:300px}
/* cut-corner tabs (no fold) */
.viewer-tabs{display:flex;gap:4px;align-items:stretch}
.viewer-tabs button{
  flex:1;background:var(--tab-bg);border:none;color:var(--text-mute);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;
  padding:12px 10px;transition:background .25s,color .25s;position:relative;
  clip-path:polygon(0 0,calc(100% - 16px) 0,100% 16px,100% 100%,0 100%);
}
.viewer-tabs button::before{content:"";position:absolute;left:0;right:0;top:0;height:2px;background:transparent;transition:background .25s}
.viewer-tabs button .tn{color:var(--accent);font-size:10px;margin-right:6px;opacity:.75}
.viewer-tabs button.active{background:var(--tab-bg-active);color:var(--text)}
.viewer-tabs button.active::before{background:var(--accent)}
.viewer-tabs button:not(.active):hover{color:var(--text);background:var(--tab-bg-active)}

.viewer-stage{position:relative;border:1px solid var(--line);border-top-color:var(--accent-line);background:
  radial-gradient(circle at 50% 40%,var(--bg-3),var(--bg));
  overflow:hidden}
.viewer-stage .corner{position:absolute;width:14px;height:14px;border:1px solid var(--accent-line);z-index:3}
.viewer-stage .corner.tl{top:12px;left:12px;border-right:none;border-bottom:none}
.viewer-stage .corner.tr{top:12px;right:12px;border-left:none;border-bottom:none}
.viewer-stage .corner.bl{bottom:12px;left:12px;border-right:none;border-top:none}
.viewer-stage .corner.br{bottom:12px;right:12px;border-left:none;border-top:none}
.viewer-pane{position:absolute;inset:0;opacity:0;visibility:hidden;transition:opacity .4s var(--ease);display:flex;align-items:center;justify-content:center}
.viewer-pane.active{opacity:1;visibility:visible}
.viewer-pane image-slot{width:100%;height:100%}
.viewer-pane img{width:100%;height:100%;object-fit:cover;display:block}
.viewer-pane .ph{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;color:var(--text-mute);font-family:var(--font-mono);font-size:12px;letter-spacing:.1em;text-transform:uppercase;text-align:center;padding:24px}
.viewer-pane .ph svg{width:42px;height:42px;color:var(--line-2)}
.viewer-cap{display:flex;justify-content:space-between;border:1px solid var(--line);border-top:none;padding:11px 16px;font-family:var(--font-mono);font-size:11.5px;letter-spacing:.08em;color:var(--text-mute)}
.viewer-cap .dim{color:var(--accent)}

/* ================================================================
   CONTACT
   ================================================================ */
.contact-grid{display:grid;grid-template-columns:0.9fr 1.1fr;gap:clamp(34px,5vw,80px);align-items:start}
.contact-details{display:flex;flex-direction:column;gap:30px}
.cdetail .cl{font-family:var(--font-mono);font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:var(--text-mute);margin-bottom:7px}
.cdetail .cv{font-family:var(--font-display);font-size:clamp(15px,1.35vw,20px);font-weight:700;text-transform:uppercase;letter-spacing:.02em}
.cdetail a.cv:hover{color:var(--accent)}
.contact-note{font-size:14px;color:var(--text-mute);max-width:38ch;line-height:1.6;border-left:2px solid var(--accent);padding-left:16px}

form.contact-form{display:grid;gap:18px}
.field{display:flex;flex-direction:column;gap:8px}
.field label{font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--text-mute)}
.field input,.field textarea{
  background:var(--bg-2);border:1px solid var(--line-2);border-radius:var(--radius);
  color:var(--text);font-family:var(--font-body);font-size:16px;padding:14px 16px;
  transition:border-color .25s,background .25s;resize:vertical;
}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--accent);background:var(--bg-3)}
.field input::placeholder,.field textarea::placeholder{color:var(--text-mute)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.btn{
  justify-self:start;display:inline-flex;align-items:center;gap:14px;
  background:var(--accent);color:var(--on-accent);border:none;border-radius:var(--radius);
  font-family:var(--font-mono);font-size:13px;letter-spacing:.16em;text-transform:uppercase;
  padding:16px 30px;transition:.25s var(--ease);
}
.btn:hover{background:var(--accent-hi);gap:20px}
.btn .arr{transition:transform .25s}
.btn:hover .arr{transform:translateX(4px)}
.form-status{font-family:var(--font-mono);font-size:12.5px;letter-spacing:.04em;color:var(--accent);min-height:18px}
.form-status.err{color:#E98A7B}
.field input.invalid,.field textarea.invalid{border-color:#E98A7B}
.btn[disabled]{opacity:.55;pointer-events:none}
/* honeypot — off-canvas rather than display:none, which some bots skip */
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}

/* ================================================================
   FOOTER
   ================================================================ */
.site-footer{border-top:1px solid var(--line);padding:56px 0 40px;position:relative}
.footer-inner{display:flex;justify-content:space-between;align-items:flex-start;gap:32px;flex-wrap:wrap}
.footer-brand{display:flex;align-items:center;gap:14px}
.footer-brand .mark{width:38px;height:34px}
.footer-nav{display:flex;gap:28px;flex-wrap:wrap}
.footer-nav a{font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--text-dim);transition:color .2s}
.footer-nav a:hover{color:var(--accent)}
.footer-copy{font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;color:var(--text-mute);margin-top:30px}

/* ================================================================
   SCROLL REVEAL
   Robust pattern: the base state is always VISIBLE. The .in class
   plays a short entrance animation (no fill-mode), so content can
   never get pinned invisible by a throttled/offscreen iframe — if
   the animation doesn't run, the element simply shows.
   ================================================================ */
@media (prefers-reduced-motion:no-preference){
  [data-reveal].in{animation:revealUp .7s var(--ease)}
  [data-reveal].in[data-delay="1"]{animation-delay:.07s}
  [data-reveal].in[data-delay="2"]{animation-delay:.14s}
  [data-reveal].in[data-delay="3"]{animation-delay:.21s}
  [data-reveal].in[data-delay="4"]{animation-delay:.28s}
  @keyframes revealUp{
    from{opacity:0;transform:translateY(24px)}
    to{opacity:1;transform:none}
  }
}

/* hero logo gears — rotation driven by scroll in JS */
.hero-net .logo-tri{opacity:.62}
.hero-net .gear{transform-box:view-box}

/* hero network drift */
@media (prefers-reduced-motion:no-preference){
  .net-float{animation:netfloat 14s ease-in-out infinite alternate}
  @keyframes netfloat{from{transform:translateY(-50%) translateX(0)}to{transform:translateY(-50%) translateX(-18px)}}
}

/* ================================================================
   RESPONSIVE
   ================================================================ */
@media (max-width:900px){
  .nav,.lang.desk{display:none}
  .menu-toggle{display:block}
  .product,.contact-grid,.feature,.hero-grid{grid-template-columns:1fr}
  .viewer-stage,.feature .viewer-stage{flex:none;aspect-ratio:16/10;min-height:0}
  .services-grid{grid-template-columns:1fr}
  .hero-logo{display:none}
  .form-row{grid-template-columns:1fr}
  /* mobile menu */
  .mobile-nav{
    position:fixed;inset:0;z-index:45;background:var(--overlay-bg);
    -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
    display:flex;flex-direction:column;align-items:center;justify-content:center;gap:30px;
    opacity:0;visibility:hidden;transition:.35s var(--ease);
  }
  .mobile-nav.open{opacity:1;visibility:visible}
  .mobile-nav a{font-family:var(--font-display);font-size:26px;text-transform:uppercase;color:var(--text);letter-spacing:.03em}
  .mobile-nav a .n{font-family:var(--font-mono);font-size:14px;color:var(--accent);margin-right:12px}
  .mobile-nav .lang{margin-top:20px}
}
@media (min-width:901px){.mobile-nav{display:none}}

@media (max-width:560px){
  body{font-size:16px}
  .hero-meta{gap:26px}
  .hero{padding-top:100px}
}