/* =========================================================================
   DEURINGER MASCHINENBAU — Design System
   Precision-engineering brand: steel-ink neutrals, refined Deuringer blue,
   technical-drawing motifs (mono labels, dimension rules, registration marks).
   Type: Archivo (grotesque) + IBM Plex Mono (technical accents)
   ========================================================================= */

:root{
  --ink:#0d1218;          /* steel black */
  --ink-2:#141c24;        /* panel dark */
  --ink-3:#1d2832;        /* raised dark */
  --steel:#5a6671;        /* mid steel grey */
  --steel-2:#8a949d;      /* light steel */
  --line:#e2e5e8;         /* hairline on light */
  --line-dk:#27313b;      /* hairline on dark */
  --paper:#f4f5f6;        /* cool off-white */
  --paper-2:#eceef0;
  --bg:#ffffff;
  --text:#2a333b;         /* body text */
  --muted:#67727b;        /* muted text */

  --blue:#1746b8;         /* primary brand blue */
  --blue-2:#2f6fe0;       /* brighter / hover */
  --azure:#3f86ec;        /* on-dark links */
  --arc:#37b6ff;          /* cyan arc accent (sparing) */

  --maxw:1280px;
  --pad:clamp(1.25rem,5vw,4rem);

  --f-sans:'Archivo','Segoe UI',system-ui,sans-serif;
  --f-mono:'IBM Plex Mono','SFMono-Regular',ui-monospace,monospace;

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

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:var(--f-sans);
  color:var(--text);
  background:var(--bg);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
::selection{background:var(--blue);color:#fff}

.container{max-width:var(--maxw);margin:0 auto;padding-left:var(--pad);padding-right:var(--pad)}

/* ---- Typography ---------------------------------------------------------- */
h1,h2,h3,h4{font-weight:700;line-height:1.05;letter-spacing:-.02em;color:var(--ink)}
h1{font-size:clamp(2.6rem,6vw,5rem);font-weight:800;letter-spacing:-.035em}
h2{font-size:clamp(2rem,4vw,3.2rem);font-weight:800;letter-spacing:-.03em}
h3{font-size:clamp(1.25rem,2vw,1.6rem)}
p{text-wrap:pretty}
.lead{font-size:clamp(1.1rem,1.5vw,1.35rem);color:var(--steel);line-height:1.6;font-weight:400}

/* mono kicker label with index + rule */
.kicker{
  display:inline-flex;align-items:center;gap:.85rem;
  font-family:var(--f-mono);font-size:.72rem;font-weight:500;
  letter-spacing:.22em;text-transform:uppercase;color:var(--blue);
}
.kicker::before{content:"";width:34px;height:1px;background:var(--blue);opacity:.55}
.kicker.on-dark{color:var(--arc)}
.kicker.on-dark::before{background:var(--arc)}
.kicker .idx{color:var(--steel-2);opacity:.8}

.eyebrow{font-family:var(--f-mono);font-size:.7rem;letter-spacing:.22em;text-transform:uppercase;color:var(--muted)}

/* ---- Buttons ------------------------------------------------------------- */
.btn{
  display:inline-flex;align-items:center;gap:.7rem;
  font-family:var(--f-mono);font-size:.78rem;font-weight:500;letter-spacing:.12em;
  text-transform:uppercase;padding:1.05rem 1.7rem;
  background:var(--blue);color:#fff;border:1px solid var(--blue);
  transition:background .25s var(--ease),transform .25s var(--ease),box-shadow .25s var(--ease);
  cursor:pointer;white-space:nowrap;
}
.btn .ar{transition:transform .3s var(--ease)}
.btn:hover{background:var(--ink);border-color:var(--ink);transform:translateY(-2px)}
.btn:hover .ar{transform:translateX(4px)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{background:var(--ink);color:#fff;border-color:var(--ink)}
.btn-light{background:#fff;color:var(--ink);border-color:#fff}
.btn-light:hover{background:transparent;color:#fff;border-color:rgba(255,255,255,.5)}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.45)}
.btn-outline-light:hover{background:#fff;color:var(--ink);border-color:#fff}

/* text link with arrow */
.tlink{display:inline-flex;align-items:center;gap:.5rem;font-family:var(--f-mono);
  font-size:.76rem;letter-spacing:.12em;text-transform:uppercase;color:var(--blue);font-weight:500}
.tlink .ar{transition:transform .3s var(--ease)}
.tlink:hover .ar{transform:translateX(5px)}

/* ---- Header -------------------------------------------------------------- */
.site-header{
  position:fixed;top:0;left:0;width:100%;z-index:1000;
  background:rgba(13,18,24,.0);
  transition:background .35s var(--ease),box-shadow .35s var(--ease),border-color .35s var(--ease);
  border-bottom:1px solid transparent;
}
.site-header.solid{background:rgba(13,18,24,.92);backdrop-filter:blur(12px);border-bottom-color:var(--line-dk)}
.nav{display:flex;align-items:center;justify-content:space-between;
  max-width:var(--maxw);margin:0 auto;padding:.85rem var(--pad);gap:1.5rem}
.brand{display:flex;align-items:center;gap:.7rem}
.brand img{height:38px;width:auto;border-radius:50%}
.brand .wm{display:flex;flex-direction:column;line-height:1}
.brand .wm b{color:#fff;font-weight:800;font-size:1.05rem;letter-spacing:.04em}
.brand .wm span{font-family:var(--f-mono);font-size:.56rem;letter-spacing:.32em;
  text-transform:uppercase;color:var(--steel-2);margin-top:3px}
.nav-links{display:flex;align-items:center;gap:1.5rem;list-style:none;flex-wrap:nowrap}
.nav-links a{font-size:.92rem;font-weight:500;color:rgba(255,255,255,.78);
  transition:color .2s;letter-spacing:.01em;white-space:nowrap}
.brand{flex-shrink:0}
.nav-links a:hover,.nav-links a.active{color:#fff}
.nav-links a.active{color:var(--arc)}
.nav-cta{display:flex;align-items:center;gap:1rem}
.nav-cta .btn{padding:.7rem 1.2rem}
.burger{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:.75rem;min-width:44px;min-height:44px;justify-content:center;align-items:center}
.burger span{width:24px;height:2px;background:#fff;transition:.3s var(--ease)}
.burger.x span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger.x span:nth-child(2){opacity:0}
.burger.x span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* mobile menu */
.m-menu{position:fixed;inset:0;z-index:999;background:var(--ink);
  display:flex;flex-direction:column;justify-content:center;padding:2rem var(--pad);
  transform:translateY(-100%);transition:transform .45s var(--ease);visibility:hidden}
.m-menu.open{transform:translateY(0);visibility:visible}
.m-menu a{color:#fff;font-size:1.6rem;font-weight:700;padding:.55rem 0;
  border-bottom:1px solid var(--line-dk);display:flex;align-items:center;gap:1rem}
.m-menu a .n{font-family:var(--f-mono);font-size:.8rem;color:var(--steel);font-weight:400}
.m-menu .btn{margin-top:1.6rem;align-self:flex-start}

/* ---- Generic section ----------------------------------------------------- */
.section{padding:clamp(4rem,9vw,8rem) 0}
.section-head{max-width:760px;margin-bottom:clamp(2.5rem,5vw,4rem)}
.section-head .kicker{margin-bottom:1.4rem}
.section-head h2{margin-bottom:1.2rem}
.bg-paper{background:var(--paper)}
.bg-ink{background:var(--ink);color:#fff}
.bg-ink h2,.bg-ink h3{color:#fff}

/* registration / crosshair mark */
.regmark{position:relative}
.regmark::before,.regmark::after{content:"";position:absolute;width:14px;height:14px;
  border-color:var(--line);border-style:solid;opacity:.9}
.regmark::before{top:0;left:0;border-width:1px 0 0 1px}
.regmark::after{bottom:0;right:0;border-width:0 1px 1px 0}

/* ---- Footer -------------------------------------------------------------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.62);padding:clamp(3.5rem,7vw,6rem) 0 2rem}
.foot-top{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:2.5rem;
  padding-bottom:3rem;border-bottom:1px solid var(--line-dk)}
.foot-brand .brand{margin-bottom:1.2rem}
.foot-brand p{font-size:.92rem;max-width:30ch;color:rgba(255,255,255,.55)}
.foot-col h4{font-family:var(--f-mono);font-size:.7rem;letter-spacing:.2em;text-transform:uppercase;
  color:var(--steel-2);margin-bottom:1.2rem;font-weight:500}
.foot-col a{display:block;font-size:.92rem;color:rgba(255,255,255,.72);padding:.32rem 0;transition:color .2s}
.foot-col a:hover{color:#fff}
.foot-contact p{font-size:.92rem;line-height:1.9;color:rgba(255,255,255,.72)}
.foot-contact a{display:inline;color:rgba(255,255,255,.72)}
.foot-contact a:hover{color:#fff}
.foot-certs{display:flex;gap:2rem;align-items:center;flex-wrap:wrap;padding:2.4rem 0;border-bottom:1px solid var(--line-dk)}
.foot-certs img{height:74px;width:auto}
.foot-certs .ct{display:flex;align-items:center;gap:1rem}
.foot-certs .ct small{font-family:var(--f-mono);font-size:.66rem;letter-spacing:.14em;text-transform:uppercase;color:var(--steel-2);max-width:14ch;line-height:1.5}
.foot-bottom{display:flex;justify-content:space-between;align-items:center;gap:1rem;
  padding-top:1.8rem;flex-wrap:wrap;font-family:var(--f-mono);font-size:.72rem;letter-spacing:.04em;color:var(--steel)}
.foot-bottom a{color:var(--steel);transition:color .2s}
.foot-bottom a:hover{color:#fff}
.foot-bottom .links{display:flex;gap:1.5rem;flex-wrap:wrap}

/* ---- Page hero (subpages) ------------------------------------------------ */
.page-hero{position:relative;background:var(--ink);color:#fff;
  padding:calc(clamp(7rem,12vw,10rem)) 0 clamp(3rem,6vw,5rem);overflow:hidden}
.page-hero::after{content:"";position:absolute;inset:0;
  background:radial-gradient(120% 90% at 85% 10%,rgba(55,182,255,.10),transparent 60%);pointer-events:none}
.page-hero .container{position:relative;z-index:2}
.page-hero h1,.page-hero h2,.page-hero h3{color:#fff}
.page-hero .kicker{margin-bottom:1.5rem}
.page-hero h1{margin-bottom:1.2rem;max-width:18ch}
.page-hero .lead{color:rgba(255,255,255,.72);max-width:60ch}
.breadcrumb{font-family:var(--f-mono);font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;
  color:var(--muted);padding:1.1rem 0;border-bottom:1px solid var(--line)}
.breadcrumb a{color:var(--blue)}
.breadcrumb .sep{color:var(--steel-2);margin:0 .6rem}

/* ---- Spec table ---------------------------------------------------------- */
.spec{width:100%;border-collapse:collapse;font-size:.95rem}
.spec tr{border-bottom:1px solid var(--line)}
.spec tr:first-child{border-top:1px solid var(--line)}
.spec td{padding:1rem .25rem;vertical-align:top}
.spec td:first-child{font-family:var(--f-mono);font-size:.78rem;letter-spacing:.04em;
  text-transform:uppercase;color:var(--muted);width:42%;padding-right:1.5rem}
.spec td:last-child{color:var(--ink);font-weight:500}

/* check list */
.checks{list-style:none;display:grid;gap:.1rem}
.checks li{position:relative;padding:.55rem 0 .55rem 2rem;border-bottom:1px solid var(--line);color:var(--text)}
.checks li::before{content:"";position:absolute;left:0;top:1.05rem;width:11px;height:11px;
  border:1.5px solid var(--blue);background:
   linear-gradient(45deg,transparent 45%,var(--blue) 45% 55%,transparent 55%),
   linear-gradient(-45deg,transparent 45%,var(--blue) 45% 55%,transparent 55%);
  background-size:100% 100%;}
.checks.tight li{border-bottom:0;padding-top:.4rem;padding-bottom:.4rem}

/* highlight panel (replaces gradient box) */
.panel{background:var(--ink);color:#fff;padding:clamp(2rem,4vw,3rem);position:relative;overflow:hidden}
.panel::after{content:"";position:absolute;inset:0;
  background:radial-gradient(100% 100% at 100% 0,rgba(55,182,255,.12),transparent 55%);pointer-events:none}
.panel h3{color:#fff;margin-bottom:.8rem}
.panel .kicker{margin-bottom:1rem}
.panel p{color:rgba(255,255,255,.74);position:relative;z-index:1}

/* reveal on scroll */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ---- Subpage layout helpers --------------------------------------------- */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(2rem,5vw,4.5rem);align-items:start}
.split.center{align-items:center}
.split h2{margin-bottom:1.3rem}
.split p{color:var(--steel);margin-bottom:1.1rem}
.split .checks{margin-top:1.6rem}
.figure-frame{position:relative;background:var(--paper);border:1px solid var(--line)}
.figure-frame img{width:100%;height:100%;object-fit:cover;display:block;aspect-ratio:4/3.2}
.figure-frame.contain{padding:1.6rem}
.figure-frame.contain img{aspect-ratio:auto;object-fit:contain}
.figure-frame figcaption{font-family:var(--f-mono);font-size:.68rem;letter-spacing:.1em;
  text-transform:uppercase;color:var(--muted);padding:.85rem 1rem;border-top:1px solid var(--line)}
.cardgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.25rem}
.fcard{border:1px solid var(--line);padding:1.7rem;background:var(--bg);transition:border-color .25s,transform .25s var(--ease)}
.fcard:hover{border-color:var(--ink);transform:translateY(-3px)}
.fcard .n{font-family:var(--f-mono);font-size:.72rem;color:var(--blue);letter-spacing:.1em;display:block;margin-bottom:.9rem}
.fcard h3{font-size:1.15rem;margin-bottom:.55rem}
.fcard p{font-size:.92rem;color:var(--steel);margin:0}
/* related services strip */
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.rel{background:var(--bg);padding:1.8rem;display:flex;flex-direction:column;gap:.6rem;transition:background .25s}
.rel:hover{background:var(--paper)}
.rel .n{font-family:var(--f-mono);font-size:.7rem;color:var(--blue);letter-spacing:.1em}
.rel h3{font-size:1.1rem}
.rel p{font-size:.9rem;color:var(--steel);margin:0;flex:1}
.rel .tlink{margin-top:.4rem}
.cta-actions{display:flex;gap:1rem;flex-wrap:wrap;margin-top:2rem}

/* legal pages */
.legal{max-width:820px}
.legal h2{font-size:clamp(1.3rem,2vw,1.6rem);margin:2.8rem 0 .9rem;padding-top:2.8rem;border-top:1px solid var(--line)}
.legal h2:first-of-type{border-top:0;padding-top:0;margin-top:0}
.legal h3{font-size:1.05rem;margin:1.6rem 0 .5rem;color:var(--blue)}
.legal p,.legal li{font-size:.97rem;color:var(--text);margin-bottom:1rem;line-height:1.75}
.legal ul{margin:0 0 1rem 1.3rem}
.legal a{color:var(--blue);word-break:break-word}
.legal .box{background:var(--paper);border:1px solid var(--line);border-left:3px solid var(--blue);padding:1.3rem 1.5rem;margin:1.2rem 0}
.legal .box p{margin:0}

@media(max-width:880px){
  .split{grid-template-columns:1fr}
  .split .figure-frame{order:-1}
  .cardgrid,.rel-grid{grid-template-columns:1fr}
}

@media(max-width:1200px){
  .nav-links{display:none}
  .nav-cta .btn{display:none}
  .burger{display:flex}
}
@media(max-width:920px){
  .foot-top{grid-template-columns:1fr 1fr}
}
@media(max-width:600px){
  .foot-top{grid-template-columns:1fr}
  .foot-bottom{flex-direction:column;align-items:flex-start}
}
@media(max-width:480px){
  .spec td{display:block;padding:.4rem 0}
  .spec td:first-child{width:auto;padding-right:0;padding-bottom:.15rem}
  .spec td:last-child{padding-top:0}
  .spec tr:first-child td:first-child{padding-top:.9rem}
  .spec tr td:last-child{padding-bottom:.9rem}
}
@media(prefers-reduced-motion:reduce){
  *{animation-duration:.001ms!important;transition-duration:.001ms!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}