/* ===========================================================
   ПСК РУСАР — design tokens
   Industrial theme: graphite + hazard-orange accent.
   System font stack only (no external font requests).
   =========================================================== */

:root{
  /* colour */
  --graphite-950:#14171a;
  --graphite-900:#1b1f23;
  --graphite-800:#262b30;
  --graphite-700:#3a4046;
  --graphite-500:#5b636b;
  --graphite-300:#9aa2a9;
  --steel-100:#eef0f2;
  --steel-50:#f6f7f8;
  --paper:#ffffff;
  --ink:#1b1f23;
  --ink-soft:#454c53;
  --accent:#ff6a13;
  --accent-dark:#d9560a;
  --accent-pale:#fff1e6;
  --line:#e2e5e8;
  --ok:#1c8a4b;

  /* type */
  --font-ui: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;

  /* layout */
  --container: 1180px;
  --radius: 4px;
  --shadow-sm: 0 1px 2px rgba(20,23,26,.06), 0 1px 1px rgba(20,23,26,.04);
  --shadow-md: 0 8px 24px rgba(20,23,26,.10);
  --cut: 18px; /* signature cut-corner size */
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  font-family:var(--font-ui);
  color:var(--ink);
  background:var(--paper);
  line-height:1.6;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{ max-width:100%; display:block; }
a{ color:var(--accent-dark); text-decoration:none; }
a:hover{ text-decoration:underline; }
ul{ margin:0; padding:0; list-style:none; }
h1,h2,h3,h4{ margin:0 0 .5em; font-weight:800; letter-spacing:-.01em; color:var(--graphite-950); }
p{ margin:0 0 1em; }
.container{ max-width:var(--container); margin:0 auto; padding:0 20px; }

/* focus visibility */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible{
  outline:3px solid var(--accent);
  outline-offset:2px;
}

@media (prefers-reduced-motion: reduce){
  *{ animation-duration:.001ms !important; transition-duration:.001ms !important; scroll-behavior:auto !important; }
}

/* ---------- eyebrow / labels (datasheet feel) ---------- */
.eyebrow{
  display:inline-flex; align-items:center; gap:.5em;
  font-family:var(--font-mono);
  font-size:12.5px; font-weight:700; letter-spacing:.14em; text-transform:uppercase;
  color:var(--accent-dark);
}
.eyebrow::before{
  content:""; width:18px; height:2px; background:var(--accent); display:inline-block;
}

/* ---------- headline scale ---------- */
.h-display{
  font-size:clamp(32px, 5vw, 56px);
  line-height:1.05;
  text-transform:uppercase;
  letter-spacing:-.015em;
}
.h-section{
  font-size:clamp(24px, 3.2vw, 34px);
  text-transform:uppercase;
  letter-spacing:-.01em;
}
.lede{ font-size:18px; color:var(--ink-soft); max-width:62ch; }

/* ===========================================================
   Skip link
   =========================================================== */
.skip-link{
  position:absolute; left:-999px; top:0; background:var(--accent); color:#fff;
  padding:10px 16px; z-index:200; font-weight:700;
}
.skip-link:focus{ left:10px; top:10px; }

/* ===========================================================
   Header / Nav
   =========================================================== */
.site-header{
  background:var(--graphite-950);
  color:#fff;
  position:sticky; top:0; z-index:100;
  border-bottom:3px solid var(--accent);
}
.site-header .bar{
  display:flex; align-items:center; justify-content:space-between;
  gap:16px; padding:10px 20px;
}
.brand{ display:flex; align-items:center; gap:12px; color:#fff; }
.brand:hover{ text-decoration:none; }
.brand img{ height:44px; width:auto; }
.brand-text{ line-height:1.15; }
.brand-text strong{ display:block; font-size:15px; letter-spacing:.03em; text-transform:uppercase; }
.brand-text span{ display:block; font-size:11px; color:var(--graphite-300); letter-spacing:.08em; text-transform:uppercase; }

.nav{ display:flex; }
.nav ul{ display:flex; gap:2px; }
.nav a{
  color:#e7e9eb; font-size:14px; font-weight:600; letter-spacing:.03em; text-transform:uppercase;
  padding:12px 14px; display:block; border-bottom:3px solid transparent; margin-bottom:-3px;
}
.nav a:hover, .nav a[aria-current="page"]{
  color:#fff; text-decoration:none; border-color:var(--accent);
}

.nav-toggle{
  display:none; background:transparent; border:1px solid var(--graphite-700); color:#fff;
  border-radius:var(--radius); padding:9px 11px; cursor:pointer;
}
.nav-toggle svg{ width:20px; height:20px; display:block; }

@media (max-width: 880px){
  .nav-toggle{ display:inline-flex; }
  .nav{
    position:fixed; inset:64px 0 0 0; background:var(--graphite-950);
    transform:translateY(-8px); opacity:0; visibility:hidden; pointer-events:none;
    transition:opacity .18s ease, transform .18s ease;
    overflow-y:auto;
  }
  .nav.is-open{ opacity:1; transform:translateY(0); visibility:visible; pointer-events:auto; }
  .nav ul{ flex-direction:column; padding:8px 20px 24px; gap:0; }
  .nav a{ padding:16px 4px; border-bottom:1px solid var(--graphite-800); font-size:16px; }
  .nav a[aria-current="page"], .nav a:hover{ border-color:var(--accent); }
}

/* ===========================================================
   Floating quick-contact buttons
   =========================================================== */
.quick-actions{
  position:fixed; right:16px; bottom:16px; z-index:150;
  display:flex; flex-direction:column; gap:10px;
}
.quick-btn{
  display:flex; align-items:center; gap:8px;
  background:var(--accent); color:#fff; font-weight:700; font-size:13px;
  padding:12px 16px; border-radius:999px; box-shadow:var(--shadow-md);
  white-space:nowrap;
}
.quick-btn:hover{ background:var(--accent-dark); color:#fff; text-decoration:none; }
.quick-btn svg{ width:16px; height:16px; flex:none; }
.quick-btn.is-secondary{ background:var(--graphite-900); }
.quick-btn.is-secondary:hover{ background:var(--graphite-800); }

.to-top{
  position:fixed; left:16px; bottom:16px; z-index:150;
  width:42px; height:42px; border-radius:50%;
  background:#fff; border:1px solid var(--line); box-shadow:var(--shadow-sm);
  display:flex; align-items:center; justify-content:center; cursor:pointer;
  opacity:0; pointer-events:none; transition:opacity .2s ease;
}
.to-top.is-visible{ opacity:1; pointer-events:auto; }

@media (max-width:600px){
  .quick-btn span{ display:none; }
  .quick-btn{ padding:14px; border-radius:50%; }
  .quick-btn svg{ width:18px; height:18px; }
}

/* ===========================================================
   Hero (signature: torn-steel-edge divider)
   =========================================================== */
.hero{
  position:relative;
  background:linear-gradient(180deg, var(--graphite-950), var(--graphite-900) 60%);
  color:#fff;
  padding:64px 0 100px;
  overflow:hidden;
}
.hero::after{
  /* signature jagged "torn steel" edge separating hero from page */
  content:"";
  position:absolute; left:0; right:0; bottom:-1px; height:34px;
  background:var(--paper);
  clip-path:polygon(0 34px,3% 4px,7% 30px,12% 10px,17% 28px,22% 6px,28% 32px,34% 2px,40% 26px,46% 8px,52% 30px,58% 4px,64% 24px,70% 10px,76% 32px,82% 6px,88% 26px,94% 12px,100% 30px,100% 100%,0 100%);
}
.hero .container{ position:relative; z-index:2; }
.hero-grid{
  display:grid; grid-template-columns:1.1fr .9fr; gap:40px; align-items:center;
}
.hero-copy .eyebrow{ color:var(--accent); }
.hero-copy .eyebrow::before{ background:var(--accent); }
.hero h1{ color:#fff; margin-top:.35em; }
.hero .lede{ color:var(--graphite-300); }
.hero-stats{ display:flex; gap:28px; margin-top:28px; flex-wrap:wrap; }
.hero-stats div strong{ display:block; font-size:26px; color:#fff; }
.hero-stats div span{ display:block; font-size:12.5px; color:var(--graphite-300); text-transform:uppercase; letter-spacing:.06em; }
.hero-cta{ display:flex; gap:12px; margin-top:32px; flex-wrap:wrap; }

.hero-media{
  position:relative; border-radius:2px; overflow:hidden;
  aspect-ratio:4/3; background:var(--graphite-800);
}
.hero-media img{ width:100%; height:100%; object-fit:cover; }
.hero-media .tag{
  position:absolute; top:14px; left:14px; background:var(--accent); color:#fff;
  font-family:var(--font-mono); font-size:11.5px; font-weight:700; letter-spacing:.08em;
  padding:5px 10px; text-transform:uppercase;
}

@media (max-width:880px){
  .hero-grid{ grid-template-columns:1fr; }
  .hero{ padding:40px 0 84px; }
}

/* ===========================================================
   Buttons
   =========================================================== */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  font-weight:700; font-size:14.5px; letter-spacing:.02em; text-transform:uppercase;
  padding:14px 22px; border-radius:2px; border:2px solid transparent; cursor:pointer;
  transition:background .15s ease, color .15s ease, border-color .15s ease;
}
.btn:hover{ text-decoration:none; }
.btn-primary{ background:var(--accent); color:#fff; }
.btn-primary:hover{ background:var(--accent-dark); color:#fff; }
.btn-ghost{ background:transparent; color:#fff; border-color:rgba(255,255,255,.35); }
.btn-ghost:hover{ border-color:#fff; color:#fff; }
.btn-outline{ background:transparent; color:var(--graphite-950); border-color:var(--graphite-950); }
.btn-outline:hover{ background:var(--graphite-950); color:#fff; }
.btn-block{ width:100%; }
.btn[disabled]{ opacity:.6; cursor:not-allowed; }

/* ===========================================================
   Sections / cut-corner panels (signature element, used sparingly)
   =========================================================== */
.section{ padding:72px 0; }
.section.alt{ background:var(--steel-50); }
.section-head{ max-width:760px; margin-bottom:40px; }
.section-head.center{ margin-left:auto; margin-right:auto; text-align:center; }

.panel-cut{
  background:#fff; border:1px solid var(--line);
  clip-path:polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, 0 100%);
  position:relative;
}
.panel-cut::before{
  content:""; position:absolute; top:0; right:0; width:var(--cut); height:var(--cut);
  background:var(--accent-pale);
  clip-path:polygon(100% 0, 100% 100%, 0 0);
}

/* ---------- services grid ---------- */
.services-grid{
  display:grid; grid-template-columns:repeat(3, 1fr); gap:20px;
}
.service-card{
  padding:26px 24px 24px;
}
.service-card .num{
  font-family:var(--font-mono); font-size:12px; color:var(--graphite-300); font-weight:700;
}
.service-card h3{ font-size:18px; text-transform:none; letter-spacing:0; margin:.5em 0 .4em; }
.service-card p{ color:var(--ink-soft); font-size:14.5px; margin:0; }

@media (max-width:960px){ .services-grid{ grid-template-columns:repeat(2,1fr);} }
@media (max-width:600px){ .services-grid{ grid-template-columns:1fr;} }

/* ---------- hazard divider (signature, used once per page max) ---------- */
.hazard-divider{
  height:10px;
  background:repeating-linear-gradient(135deg, var(--graphite-950) 0 18px, var(--accent) 18px 36px);
  margin:0;
}

/* ---------- why-us / feature list ---------- */
.feature-list{ display:grid; grid-template-columns:repeat(2,1fr); gap:16px 32px; }
.feature-list li{ display:flex; gap:12px; align-items:flex-start; }
.feature-list .dot{
  flex:none; width:22px; height:22px; border-radius:50%; background:var(--accent-pale);
  display:flex; align-items:center; justify-content:center; margin-top:2px;
}
.feature-list .dot svg{ width:12px; height:12px; color:var(--accent-dark); }
@media (max-width:640px){ .feature-list{ grid-template-columns:1fr; } }

/* ---------- CTA band ---------- */
.cta-band{
  background:var(--graphite-950); color:#fff; padding:48px 0; text-align:center;
}
.cta-band h2{ color:#fff; }
.cta-band .lede{ color:var(--graphite-300); margin:0 auto 24px; }

/* ===========================================================
   Gallery
   =========================================================== */
.gallery-filters{ display:flex; gap:10px; flex-wrap:wrap; margin-bottom:28px; }
.filter-btn{
  font-family:var(--font-mono); font-size:12.5px; font-weight:700; letter-spacing:.06em; text-transform:uppercase;
  padding:9px 16px; border:1px solid var(--line); background:#fff; border-radius:999px; cursor:pointer;
  color:var(--ink-soft);
}
.filter-btn:hover{ border-color:var(--graphite-500); }
.filter-btn[aria-pressed="true"]{ background:var(--graphite-950); color:#fff; border-color:var(--graphite-950); }

.media-grid{
  display:grid; grid-template-columns:repeat(4, 1fr); gap:14px;
}
@media (max-width:960px){ .media-grid{ grid-template-columns:repeat(3,1fr); } }
@media (max-width:640px){ .media-grid{ grid-template-columns:repeat(2,1fr); gap:10px; } }

.media-tile{
  position:relative; aspect-ratio:1/1; overflow:hidden; border-radius:2px; cursor:pointer;
  background:var(--steel-100); border:1px solid var(--line);
}
.media-tile img{ width:100%; height:100%; object-fit:cover; transition:transform .3s ease; }
.media-tile:hover img{ transform:scale(1.06); }
.media-tile .badge{
  position:absolute; top:8px; left:8px; background:rgba(20,23,26,.82); color:#fff;
  font-size:11px; font-weight:700; letter-spacing:.05em; text-transform:uppercase;
  padding:4px 8px; border-radius:2px; display:flex; align-items:center; gap:5px;
}
.media-tile .badge svg{ width:11px; height:11px; }
.media-tile .caption{
  position:absolute; left:0; right:0; bottom:0; padding:8px 10px 7px;
  background:linear-gradient(0deg, rgba(20,23,26,.85), transparent);
  color:#fff; font-size:12.5px; opacity:0; transition:opacity .2s ease;
}
.media-tile:hover .caption{ opacity:1; }
.media-tile:focus-visible .caption{ opacity:1; }

/* ---------- lightbox ---------- */
.lightbox{
  position:fixed; inset:0; background:rgba(10,12,14,.92); z-index:300;
  display:flex; align-items:center; justify-content:center; padding:20px;
  opacity:0; visibility:hidden; transition:opacity .18s ease;
}
.lightbox.is-open{ opacity:1; visibility:visible; }
.lightbox-stage{ max-width:min(92vw, 1100px); max-height:88vh; width:100%; position:relative; }
.lightbox-stage img, .lightbox-stage video{
  width:100%; max-height:80vh; object-fit:contain; display:block; margin:0 auto; background:#000;
}
.lightbox-caption{ color:#fff; text-align:center; margin-top:12px; font-size:14px; }
.lightbox-close, .lightbox-prev, .lightbox-next{
  position:absolute; background:rgba(255,255,255,.08); border:1px solid rgba(255,255,255,.25);
  color:#fff; width:44px; height:44px; border-radius:50%; display:flex; align-items:center; justify-content:center;
  cursor:pointer;
}
.lightbox-close{ top:-56px; right:0; }
.lightbox-prev{ left:-56px; top:50%; transform:translateY(-50%); }
.lightbox-next{ right:-56px; top:50%; transform:translateY(-50%); }
.lightbox-close svg,.lightbox-prev svg,.lightbox-next svg{ width:18px; height:18px; }
@media (max-width:760px){
  .lightbox-close{ top:-48px; right:0; }
  .lightbox-prev{ left:2px; }
  .lightbox-next{ right:2px; }
}

.gallery-empty{
  border:1px dashed var(--line); border-radius:4px; padding:40px; text-align:center; color:var(--ink-soft);
}

/* ===========================================================
   Certificates
   =========================================================== */
.cert-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:20px; }
@media (max-width:880px){ .cert-grid{ grid-template-columns:repeat(2,1fr); } }
@media (max-width:600px){ .cert-grid{ grid-template-columns:1fr; } }
.cert-card{ overflow:hidden; }
.cert-card .thumb{ aspect-ratio:3/4; overflow:hidden; cursor:pointer; background:var(--steel-100); }
.cert-card .thumb img{ width:100%; height:100%; object-fit:cover; }
.cert-card .meta{ padding:16px 18px 18px; }
.cert-card h3{ font-size:15.5px; text-transform:none; letter-spacing:0; }
.cert-card .meta a{ font-size:13.5px; font-weight:700; }

/* ===========================================================
   Cards: equipment / vacancy
   =========================================================== */
.item-card{ overflow:hidden; display:flex; flex-direction:column; }
.item-card .thumb{ aspect-ratio:4/3; background:var(--steel-100); overflow:hidden; }
.item-card .thumb img{ width:100%; height:100%; object-fit:cover; }
.item-card .body{ padding:20px 22px 22px; display:flex; flex-direction:column; gap:8px; flex:1; }
.item-card h3{ font-size:18px; text-transform:none; letter-spacing:0; margin:0; }
.item-card .price{ font-family:var(--font-mono); font-weight:700; color:var(--accent-dark); font-size:15px; }
.item-card p{ color:var(--ink-soft); font-size:14.5px; margin:0; flex:1; }
.equipment-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:20px; }
@media (max-width:880px){ .equipment-grid{ grid-template-columns:repeat(2,1fr); } }
@media (max-width:600px){ .equipment-grid{ grid-template-columns:1fr; } }

.notice{
  border:1px solid var(--line); background:var(--accent-pale); border-radius:4px;
  padding:16px 18px; font-size:14.5px; color:var(--ink-soft);
}
.notice strong{ color:var(--ink); }

.vacancy-list{ display:grid; gap:14px; }
.vacancy-card{
  display:flex; align-items:center; justify-content:space-between; gap:16px; flex-wrap:wrap;
  padding:20px 22px;
}
.vacancy-card h3{ font-size:17px; text-transform:none; letter-spacing:0; margin:0 0 4px; }
.vacancy-card .pay{ font-family:var(--font-mono); color:var(--accent-dark); font-weight:700; }

/* ===========================================================
   Contact / feedback
   =========================================================== */
.contact-grid{ display:grid; grid-template-columns:1fr 1fr; gap:40px; align-items:start; }
@media (max-width:880px){ .contact-grid{ grid-template-columns:1fr; } }

.info-list dt{ font-family:var(--font-mono); font-size:11.5px; letter-spacing:.08em; text-transform:uppercase; color:var(--graphite-300); margin-top:16px; }
.info-list dt:first-child{ margin-top:0; }
.info-list dd{ margin:2px 0 0; font-size:15.5px; }
.info-list{ margin:0; }

.map-frame{ border:1px solid var(--line); border-radius:4px; overflow:hidden; margin-top:24px; }
.map-frame iframe{ width:100%; height:340px; border:0; display:block; }

.form-card{ padding:28px 26px; }
.field{ margin-bottom:16px; }
.field label{ display:block; font-size:13px; font-weight:700; margin-bottom:6px; color:var(--graphite-800); }
.field .req{ color:var(--accent-dark); }
.field input, .field textarea{
  width:100%; border:1px solid var(--line); border-radius:3px; padding:12px 14px;
  font:inherit; font-size:15px; background:#fff; color:var(--ink);
}
.field input:hover, .field textarea:hover{ border-color:var(--graphite-500); }
.field input:focus, .field textarea:focus{ border-color:var(--accent); outline:none; box-shadow:0 0 0 3px var(--accent-pale); }
.field textarea{ min-height:130px; resize:vertical; }
.field small{ display:block; color:var(--graphite-500); font-size:12.5px; margin-top:4px; }
.field-row{ display:grid; grid-template-columns:1fr 1fr; gap:14px; }
@media (max-width:520px){ .field-row{ grid-template-columns:1fr; } }

.upload-zone{
  border:2px dashed var(--line); border-radius:4px; padding:26px; text-align:center;
  color:var(--ink-soft); font-size:14px; cursor:pointer; background:var(--steel-50);
  transition:border-color .15s ease, background .15s ease;
}
.upload-zone.is-drag{ border-color:var(--accent); background:var(--accent-pale); }
.upload-zone strong{ color:var(--ink); display:block; margin-bottom:4px; }
.upload-list{ margin-top:12px; display:flex; flex-direction:column; gap:6px; }
.upload-item{
  display:flex; align-items:center; justify-content:space-between; gap:10px;
  font-size:13.5px; background:#fff; border:1px solid var(--line); border-radius:3px; padding:8px 12px;
}
.upload-item button{ background:none; border:0; color:var(--graphite-500); cursor:pointer; font-size:13px; }
.upload-item button:hover{ color:var(--accent-dark); }
.upload-item.is-error{ border-color:#d94a4a; color:#b23a3a; }

.form-status{ font-size:14px; margin-top:14px; padding:12px 14px; border-radius:3px; display:none; }
.form-status.is-visible{ display:block; }
.form-status.is-ok{ background:#eaf7ee; color:var(--ok); border:1px solid #bfe6cc; }
.form-status.is-error{ background:#fdeceb; color:#b23a3a; border:1px solid #f3c4c0; }

.company-req{ font-size:14px; color:var(--ink-soft); }
.company-req dt{ font-weight:700; color:var(--ink); }
.company-req dd{ margin:0 0 12px; }

/* ===========================================================
   Footer
   =========================================================== */
.site-footer{ background:var(--graphite-950); color:var(--graphite-300); padding:52px 0 0; }
.footer-grid{
  display:grid; grid-template-columns:1.3fr 1fr 1fr; gap:32px; padding-bottom:36px;
  border-bottom:1px solid var(--graphite-800);
}
.footer-grid h4{ color:#fff; font-size:13px; letter-spacing:.08em; text-transform:uppercase; margin-bottom:14px; }
.footer-grid a{ color:var(--graphite-300); }
.footer-grid a:hover{ color:#fff; }
.footer-nav li{ margin-bottom:8px; }
.footer-contacts p{ margin:0 0 8px; font-size:14.5px; }
.footer-qr img{ width:110px; height:110px; background:#fff; padding:6px; border-radius:4px; }
.footer-bottom{ padding:18px 0 26px; display:flex; justify-content:space-between; gap:12px; flex-wrap:wrap; font-size:12.5px; }
@media (max-width:880px){ .footer-grid{ grid-template-columns:1fr 1fr; } .footer-grid > div:first-child{ grid-column:1 / -1; } }
@media (max-width:560px){ .footer-grid{ grid-template-columns:1fr; } }

/* ===========================================================
   Page title bar (inner pages)
   =========================================================== */
.page-title{ background:var(--steel-50); border-bottom:1px solid var(--line); padding:40px 0; }
.page-title .eyebrow{ margin-bottom:10px; }
.page-title h1{ margin-bottom:0; }
.page-title p{ color:var(--ink-soft); margin:.4em 0 0; }

.visually-hidden{
  position:absolute; width:1px; height:1px; overflow:hidden; clip:rect(0 0 0 0); white-space:nowrap;
}