/* =========================================================================
   ARBEITSKRAFTWERK — Corporate Identity
   Direction: refined industrial-electric. Graphite + bone paper + high-voltage amber.
   Self-hosted fonts (DSGVO – no third-party CDN at runtime).
   ========================================================================= */

@font-face{font-family:'Archivo';src:url('/fonts/archivo-500.woff2') format('woff2');font-weight:500;font-display:swap}
@font-face{font-family:'Archivo';src:url('/fonts/archivo-700.woff2') format('woff2');font-weight:700;font-display:swap}
@font-face{font-family:'Archivo';src:url('/fonts/archivo-800.woff2') format('woff2');font-weight:800;font-display:swap}
@font-face{font-family:'Plex Sans';src:url('/fonts/plexsans-400.woff2') format('woff2');font-weight:400;font-display:swap}
@font-face{font-family:'Plex Sans';src:url('/fonts/plexsans-500.woff2') format('woff2');font-weight:500;font-display:swap}
@font-face{font-family:'Plex Sans';src:url('/fonts/plexsans-600.woff2') format('woff2');font-weight:600;font-display:swap}
@font-face{font-family:'Plex Mono';src:url('/fonts/plexmono-500.woff2') format('woff2');font-weight:500;font-display:swap}

:root{
    --ink:#15171c;        /* graphite */
    --ink-2:#23262f;
    --ink-3:#3a3f4b;
    --paper:#f6f4ef;      /* bone */
    --paper-2:#fffefb;
    --line:#e4dfd5;
    --line-2:#d6d0c4;
    --volt:#f2a516;       /* high-voltage amber (primary) */
    --volt-d:#a4690a;     /* amber, legible on paper */
    --volt-deep:#7a4d05;
    --copper:#c2410c;     /* warm secondary */
    --glow:rgba(242,165,22,.30);
    --muted:#6b6358;      /* warm gray */
    --ok:#3f7d4e;

    --font-display:'Archivo','Archivo Black',system-ui,sans-serif;
    --font-body:'Plex Sans','Segoe UI',system-ui,sans-serif;
    --font-mono:'Plex Mono',ui-monospace,'SFMono-Regular',monospace;

    --maxw:1120px;
    --radius:14px;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
    font-family:var(--font-body);
    background:var(--paper);
    color:var(--ink);
    line-height:1.65;
    -webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;
}
a{color:inherit;text-decoration:none}
img,svg{display:block;max-width:100%}
::selection{background:var(--volt);color:var(--ink)}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ---- blueprint grid background utility ---- */
.grid-bg{
    background-image:
        linear-gradient(var(--line) 1px,transparent 1px),
        linear-gradient(90deg,var(--line) 1px,transparent 1px);
    background-size:34px 34px;
    background-position:center;
}

/* ---- type ---- */
.eyebrow{
    font-family:var(--font-mono);
    font-size:12px;font-weight:500;letter-spacing:2px;text-transform:uppercase;
    color:var(--volt-d);
    display:inline-flex;align-items:center;gap:8px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--volt);display:inline-block}

h1,h2,h3{font-family:var(--font-display);font-weight:800;letter-spacing:-.02em;line-height:1.04;color:var(--ink)}
.display{font-size:clamp(40px,7vw,82px);font-weight:800;letter-spacing:-.035em;line-height:.98}
.display .volt{color:var(--volt-d);position:relative;white-space:nowrap}
.display .volt::after{content:"";position:absolute;left:0;right:0;bottom:.06em;height:.12em;background:var(--volt);opacity:.45;border-radius:2px}

/* ---- buttons ---- */
.btn{
    display:inline-flex;align-items:center;gap:9px;
    font-family:var(--font-mono);font-size:14px;font-weight:500;letter-spacing:.3px;
    padding:13px 22px;border-radius:11px;border:1.5px solid transparent;cursor:pointer;
    transition:transform .15s ease,box-shadow .15s ease,background .15s ease,border-color .15s;
    white-space:nowrap;
}
.btn-primary{background:var(--ink);color:var(--paper-2)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 28px -12px rgba(21,23,28,.7)}
.btn-volt{background:var(--volt);color:var(--ink);box-shadow:0 8px 24px -8px var(--glow)}
.btn-volt:hover{transform:translateY(-2px);box-shadow:0 14px 34px -8px var(--glow)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line-2)}
.btn-ghost:hover{border-color:var(--ink);transform:translateY(-2px)}

/* ---- top nav ---- */
.nav{position:sticky;top:0;z-index:60;background:color-mix(in srgb,var(--paper) 86%,transparent);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.nav .inner{display:flex;align-items:center;justify-content:space-between;height:70px}
.nav-right{display:flex;align-items:center;gap:18px}
.lang{display:flex;font-family:var(--font-mono);font-size:12px;border:1px solid var(--line-2);border-radius:9px;overflow:hidden}
.lang a{padding:6px 11px;color:var(--muted);transition:.15s}
.lang a.on{background:var(--ink);color:var(--paper-2)}
.lang a:not(.on):hover{background:var(--paper-2);color:var(--ink)}

/* ---- logo ---- */
.logo{display:inline-flex;align-items:center;gap:11px}
.logo .mark{width:34px;height:34px;flex-shrink:0}
.logo .word{font-family:var(--font-display);font-weight:800;font-size:19px;letter-spacing:-.02em;color:var(--ink)}
.logo .word b{color:var(--volt-d);font-weight:800}

/* ---- footer ---- */
.foot{background:var(--ink);color:#c9cad0;margin-top:90px}
.foot .inner{display:flex;flex-wrap:wrap;gap:28px;justify-content:space-between;padding:54px 0 30px}
.foot .word{font-family:var(--font-display);font-weight:800;color:var(--paper-2);font-size:20px}
.foot a{color:#c9cad0;font-size:14.5px;transition:.15s}
.foot a:hover{color:var(--volt)}
.foot .cols{display:flex;gap:54px;flex-wrap:wrap}
.foot .col h5{font-family:var(--font-mono);font-size:11px;letter-spacing:1.5px;text-transform:uppercase;color:#7b7d87;margin-bottom:12px}
.foot .col a{display:block;margin-bottom:8px}
.foot .bar{border-top:1px solid #2a2d36;padding:18px 0;font-size:13px;color:#7b7d87;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}
.foot .bar .mono{font-family:var(--font-mono)}

/* ---- legal / prose ---- */
.legal{max-width:760px;margin:0 auto;padding:64px 24px 20px}
.legal .eyebrow{margin-bottom:16px}
.legal h1{font-size:clamp(30px,5vw,46px);margin-bottom:8px}
.legal .lead{color:var(--muted);font-size:17px;margin-bottom:30px}
.legal h2{font-family:var(--font-display);font-size:20px;font-weight:700;margin:34px 0 10px;padding-top:18px;border-top:1px solid var(--line)}
.legal h3{font-family:var(--font-body);font-size:16px;font-weight:600;margin:18px 0 4px}
.legal p{margin:0 0 12px;color:#33363f}
.legal ul{margin:0 0 14px 18px;color:#33363f}
.legal li{margin-bottom:5px}
.legal a{color:var(--volt-d);text-decoration:underline;text-underline-offset:2px}
.legal .card{background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius);padding:20px 22px;margin:14px 0;font-family:var(--font-mono);font-size:13.5px;line-height:1.9}
.legal .muted{color:var(--muted)}

@media(max-width:680px){
    .foot .inner{flex-direction:column;gap:26px}
    .nav .inner{height:62px}
    .logo .word{font-size:17px}
}