/* friedrichgroeger.de
   Monochrom. Hell als Standard, dunkel als Umschaltung —
   dieselbe Marke, invertiert: schwarzes Auto, weiße Folie. */

:root{
  --bg:#fbfaf7;
  --bg-raise:#f5f3ee;
  --fg:#0d0d0c;
  --fg-70:rgba(13,13,12,.72);
  --fg-46:rgba(13,13,12,.52);
  --fg-30:rgba(13,13,12,.34);
  --rule:rgba(13,13,12,.20);
  --rule-soft:rgba(13,13,12,.10);
  --hover:rgba(13,13,12,.028);
  --mark-invert:1;
  --img:grayscale(1) contrast(1.04) brightness(1.02);
  --bar-bg:rgba(251,250,247,.92);
  --led-g:oklch(56% .17 145);
  --led-a:oklch(62% .16 66);
  --led-b:oklch(56% .15 250);
  --sans:'Space Grotesk',-apple-system,'Helvetica Neue',Arial,sans-serif;
  --mono:'Martian Mono',ui-monospace,'SF Mono',Menlo,monospace;
  --pad:clamp(20px,4.4vw,64px);
  --maxw:1560px;
}
html[data-theme=dark]{
  --bg:#0b0b0b;
  --bg-raise:#111110;
  --fg:#fafaf8;
  --fg-70:rgba(250,250,248,.70);
  --fg-46:rgba(250,250,248,.46);
  --fg-30:rgba(250,250,248,.30);
  --rule:rgba(250,250,248,.16);
  --rule-soft:rgba(250,250,248,.09);
  --hover:rgba(250,250,248,.022);
  --mark-invert:0;
  --img:grayscale(1) contrast(1.12) brightness(.92);
  --bar-bg:rgba(11,11,11,.92);
  --led-g:oklch(75% .19 148);
  --led-a:oklch(81% .16 78);
  --led-b:oklch(84% .11 238);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--fg);font-family:var(--sans);font-size:17px;line-height:1.55;font-weight:400;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow-x:hidden}
body,.bar,.rule,.spec__row,.job,.foil,.profil,.kontakt,footer,.facts,.facts div,.kv div,.job__fig,.job__fig figcaption,.job__list,.profil__fig img,.spec,.kv,.theme{transition:background-color .32s ease,border-color .32s ease,color .32s ease}
img{display:block;max-width:100%}
a{color:var(--fg);text-decoration:none;border-bottom:1px solid var(--rule);transition:border-color .2s}
a:hover{border-bottom-color:var(--fg)}
::selection{background:var(--fg);color:var(--bg)}

/* ── Annotationsebene ───────────────────────────── */
.anno{font-family:var(--mono);font-size:9.5px;font-weight:400;letter-spacing:.2em;text-transform:uppercase;color:var(--fg-46);line-height:1.6}
.anno--bright{color:var(--fg-70)}
.idx{font-family:var(--mono);font-size:9.5px;letter-spacing:.2em;color:var(--fg-30)}
.rule{height:1px;background:var(--rule);border:0;margin:0}
.vh{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* ── Passermarken ───────────────────────────────── */
.marks{position:fixed;inset:14px;pointer-events:none;z-index:60}
.marks i{position:absolute;width:13px;height:13px;border:0 solid var(--rule)}
.marks i:nth-child(1){top:0;left:0;border-top-width:1px;border-left-width:1px}
.marks i:nth-child(2){top:0;right:0;border-top-width:1px;border-right-width:1px}
.marks i:nth-child(3){bottom:0;left:0;border-bottom-width:1px;border-left-width:1px}
.marks i:nth-child(4){bottom:0;right:0;border-bottom-width:1px;border-right-width:1px}

/* ── Kopfleiste ─────────────────────────────────── */
.bar{position:sticky;top:0;z-index:50;background:var(--bar-bg);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);border-bottom:1px solid var(--rule)}
.bar__in{max-width:var(--maxw);margin:0 auto;padding:13px var(--pad);display:flex;align-items:center;justify-content:space-between;gap:20px}
.mark{display:flex;align-items:center;border:0;line-height:1}
.mark img{height:16px;width:auto;filter:invert(var(--mark-invert))}
.mark .port{display:block;width:auto}
.mark .port img{height:16px;width:auto}

/* ── Netzwerkport im Logo ───────────────────────── */
.port{position:relative;display:inline-block;line-height:0}
.port img{display:block;width:100%;height:auto;filter:invert(var(--mark-invert))}
.port__jack{position:absolute;top:28%;bottom:-4%;left:69%;width:33%;padding:0;border:0;background:transparent;cursor:pointer;-webkit-tap-highlight-color:transparent}
.port__jack::after{content:"";position:absolute;inset:0;border:1px dashed var(--rule);opacity:0;transition:opacity .2s}
.port__jack:hover::after,.port__jack:focus-visible::after{opacity:1}
.port__leds{position:absolute;inset:0;opacity:0;transition:opacity .35s;pointer-events:none}
.port__leds i{position:absolute;top:41.8%;width:3.2%;aspect-ratio:1}
.port__leds i:nth-child(1){left:71.8%;background:var(--led-g)}
.port__leds i:nth-child(2){left:94.5%;background:var(--led-a)}
.port__cable{position:absolute;left:84.4%;bottom:68%;width:2px;height:0;background:var(--fg);transition:height .42s cubic-bezier(.2,.85,.2,1);pointer-events:none}
.port__cable::after{content:"";position:absolute;left:-3px;top:-9px;width:8px;height:10px;background:var(--fg);opacity:0;transition:opacity .18s .34s}
html.link-up .port__leds{opacity:1}
html.link-up .port__leds i:nth-child(1){animation:none}
html.link-up .port__leds i:nth-child(2){animation:led4 1.6s steps(1,end) infinite}
html.link-up .port__cable{height:clamp(14px,2vw,30px)}
html.link-up .port__cable::after{opacity:1}

/* Trennpunkte als Port-LEDs */
.led{font-style:normal;color:inherit;transition:color .35s,text-shadow .35s}
html.link-up .led{color:var(--c);animation:var(--k,led1) var(--d,3s) steps(1,end) var(--dl,0s) infinite}
html.link-up .led.is-idle{animation:none}
html[data-theme=dark].link-up .led{text-shadow:0 0 5px var(--c),0 0 14px var(--c)}
html:not([data-theme=dark]).link-up .led{text-shadow:0 0 4px var(--c)}
/* Verkehr: die LED leuchtet, und geht nur kurz aus */
@keyframes led1{0%,93%{opacity:1}94%,97%{opacity:.12}98%,100%{opacity:1}}
@keyframes led2{0%,54%{opacity:1}55%,58%{opacity:.12}59%,86%{opacity:1}87%,90%{opacity:.12}91%,100%{opacity:1}}
@keyframes led3{0%,30%{opacity:1}31%,33%{opacity:.12}34%,36%{opacity:1}37%,39%{opacity:.12}40%,42%{opacity:1}43%,45%{opacity:.12}46%,100%{opacity:1}}
@keyframes led4{0%,8%{opacity:1}9%,12%{opacity:.12}13%,20%{opacity:1}21%,23%{opacity:.12}24%,44%{opacity:1}45%,47%{opacity:.12}48%,52%{opacity:1}53%,55%{opacity:.12}56%,74%{opacity:1}75%,78%{opacity:.12}79%,100%{opacity:1}}

/* Statusmeldung */
.linkstat{opacity:0;transition:opacity .3s;white-space:nowrap;pointer-events:none}
.linkstat.on{opacity:1}
.bar nav{display:flex;gap:clamp(14px,2.4vw,36px)}
.bar nav a{font-family:var(--mono);font-size:9.5px;letter-spacing:.2em;text-transform:uppercase;color:var(--fg-46);border:0;transition:color .2s}
.bar nav a:hover{color:var(--fg)}
.bar__end{display:flex;align-items:center;gap:clamp(12px,2vw,24px)}
.bar__geo{text-align:right}

/* Umschalter */
.theme{font-family:var(--mono);font-size:9px;letter-spacing:.2em;text-transform:uppercase;color:var(--fg-46);background:transparent;border:1px solid var(--rule);padding:6px 10px;cursor:pointer;line-height:1;white-space:nowrap}
.theme:hover{color:var(--fg);border-color:var(--fg)}
.theme span::before{content:"Dunkel"}
html[data-theme=dark] .theme span::before{content:"Hell"}

/* ── Bogen ──────────────────────────────────────── */
.sheet{max-width:var(--maxw);margin:0 auto;padding:0 var(--pad)}
.grid{display:grid;grid-template-columns:repeat(12,1fr);column-gap:clamp(16px,2vw,32px)}

/* ── Auftakt ────────────────────────────────────── */
.open{padding-block:clamp(56px,9vw,132px) clamp(40px,6vw,80px);row-gap:clamp(48px,7vw,96px)}
.open__mark{grid-column:1/span 4;align-self:start}
.open__mark .port{width:100%;max-width:420px}
.open__body{grid-column:6/span 7;display:flex;flex-direction:column;gap:clamp(28px,3.4vw,44px)}
.lockline{font-family:var(--mono);font-size:clamp(8.5px,.82vw,11px);font-weight:400;letter-spacing:.42em;text-transform:uppercase;color:var(--fg-70);line-height:1.9}
h1{margin:0;font-size:clamp(38px,5.6vw,94px);font-weight:500;line-height:.94;letter-spacing:-.038em;text-wrap:balance}
h1 em{font-style:normal;font-weight:300;color:var(--fg-70)}
.open__lede{max-width:52ch;font-size:clamp(17px,1.35vw,21px);line-height:1.48;color:var(--fg-70);margin:0}
.facts{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));border-top:1px solid var(--rule);margin-top:6px}
.facts div{padding:16px 20px 16px 0;border-right:1px solid var(--rule-soft)}
.facts div:last-child{border-right:0}
.facts dt{margin:0 0 6px}
.facts dd{margin:0;font-size:15px;line-height:1.4}

/* ── Folienband ─────────────────────────────────── */
.foil{border-top:1px solid var(--rule);border-bottom:1px solid var(--rule);padding:clamp(52px,8vw,104px) 0;margin-top:clamp(24px,4vw,48px)}
.foil__lock{display:flex;flex-direction:column;align-items:center;gap:clamp(14px,1.8vw,22px);text-align:center}
.foil__fg{width:min(52%,380px)}
.foil__url{font-size:clamp(19px,2.6vw,38px);font-weight:400;letter-spacing:-.02em}
.foil__tag{font-family:var(--mono);font-size:clamp(7.5px,.9vw,12px);letter-spacing:.44em;text-transform:uppercase;color:var(--fg-70);line-height:1.8;max-width:100%}

/* ── Sektionskopf ───────────────────────────────── */
.head{padding-block:clamp(72px,10vw,140px) clamp(26px,3.4vw,44px);row-gap:14px;align-items:end}
.head__no{grid-column:1/span 1}
.head__t{grid-column:2/span 6;margin:0;font-size:clamp(27px,3.5vw,52px);font-weight:500;letter-spacing:-.032em;line-height:1}
.head__t em{font-style:normal;font-weight:300;color:var(--fg-70)}
.head__note{grid-column:9/span 4;max-width:38ch;font-size:15px;line-height:1.5;color:var(--fg-46);margin:0}

/* ── Materialliste ──────────────────────────────── */
.spec{border-top:1px solid var(--rule)}
.spec__row{border-bottom:1px solid var(--rule-soft);padding-block:clamp(22px,2.6vw,32px);row-gap:10px;align-items:baseline}
.spec__row:hover{background:var(--hover)}
.spec__no{grid-column:1/span 1}
.spec__name{grid-column:2/span 4;margin:0;font-size:clamp(19px,1.9vw,28px);font-weight:500;letter-spacing:-.02em;line-height:1.1}
.spec__txt{grid-column:6/span 4;margin:0;font-size:15px;line-height:1.5;color:var(--fg-70)}
.spec__mat{grid-column:10/span 3;display:flex;flex-wrap:wrap;gap:5px 12px;justify-content:flex-end}

/* ── Aufträge ───────────────────────────────────── */
.job{border-top:1px solid var(--rule);padding:clamp(44px,6vw,88px) 0}
.job__top{row-gap:12px;align-items:baseline;margin-bottom:clamp(24px,3vw,40px)}
.job__no{grid-column:1/span 1}
.job__ttl{grid-column:2/span 8;margin:0;font-size:clamp(23px,2.7vw,42px);font-weight:500;letter-spacing:-.028em;line-height:1.06}
.job__client{grid-column:11/span 2;text-align:right}
.job__fig{margin:0;position:relative;border:1px solid var(--rule)}
.job__fig img{width:100%;filter:var(--img)}
.job__fig figcaption{position:absolute;left:0;bottom:0;padding:8px 12px;background:var(--bar-bg);border-top:1px solid var(--rule);border-right:1px solid var(--rule)}
.job__cols{margin-top:clamp(24px,3vw,40px);row-gap:26px}
.job__c{grid-column:span 4}
.job__c p{margin:8px 0 0;font-size:15px;line-height:1.55;color:var(--fg-70)}
.job__list{margin:clamp(24px,3vw,40px) 0 0;padding:clamp(20px,2.4vw,28px) 0 0;border-top:1px solid var(--rule-soft);list-style:none;display:grid;grid-template-columns:repeat(2,1fr);gap:9px clamp(24px,3vw,48px)}
.job__list li{font-size:14.5px;line-height:1.5;color:var(--fg-70);padding-left:26px;position:relative}
.job__list li::before{content:attr(data-n);position:absolute;left:0;top:1px;font-family:var(--mono);font-size:9px;letter-spacing:.14em;color:var(--fg-30)}
.job__mat{margin-top:clamp(20px,2.4vw,28px);display:flex;flex-wrap:wrap;gap:6px 20px}
.job--a .job__fig{grid-column:1/span 12;aspect-ratio:16/6.4;overflow:hidden}
.job--a .job__fig img{height:100%;object-fit:cover;object-position:center 42%}
.job--b .job__fig{grid-column:3/span 10;aspect-ratio:16/7;overflow:hidden}
.job--b .job__fig img{height:100%;object-fit:cover;object-position:center 50%}
.job--c .job__fig{grid-column:1/span 9;aspect-ratio:16/6;overflow:hidden}
.job--c .job__fig img{height:100%;object-fit:cover;object-position:42% 50%}

/* ── Profil ─────────────────────────────────────── */
.profil{border-top:1px solid var(--rule);padding-block:clamp(56px,8vw,120px);row-gap:clamp(36px,5vw,64px)}
.profil__fig{grid-column:1/span 4}
.profil__fig img{width:100%;aspect-ratio:4/5;object-fit:cover;object-position:center 18%;filter:var(--img);border:1px solid var(--rule)}
.profil__fig figcaption{margin-top:10px}
.profil__txt{grid-column:6/span 6}
.profil__txt p{font-size:clamp(16px,1.3vw,19px);line-height:1.6;color:var(--fg-70);margin:0 0 20px;max-width:56ch}
.profil__txt p:first-of-type{font-size:clamp(19px,1.7vw,25px);line-height:1.42;color:var(--fg);letter-spacing:-.012em}
.profil__txt p:last-child{margin-bottom:0}
.kv{margin:clamp(28px,3.4vw,44px) 0 0;border-top:1px solid var(--rule)}
.kv div{display:flex;gap:24px;padding:11px 0;border-bottom:1px solid var(--rule-soft)}
.kv dt{flex:0 0 clamp(96px,11vw,150px);margin:0}
.kv dd{margin:0;font-size:15px;line-height:1.45}

/* ── Kontakt ────────────────────────────────────── */
.kontakt{border-top:1px solid var(--rule);padding-block:clamp(64px,9vw,132px) clamp(56px,7vw,96px);row-gap:clamp(36px,5vw,56px)}
.kontakt__t{grid-column:1/span 6;margin:0;font-size:clamp(30px,4.4vw,72px);font-weight:500;letter-spacing:-.036em;line-height:.98}
.kontakt__t em{font-style:normal;font-weight:300;color:var(--fg-70)}
.kontakt__d{grid-column:8/span 5}
.kontakt__d p{margin:0 0 26px;font-size:16px;line-height:1.55;color:var(--fg-70);max-width:40ch}

/* ── Rechtstexte ────────────────────────────────── */
.legal{padding-block:clamp(56px,8vw,120px) clamp(48px,6vw,88px);row-gap:clamp(32px,4vw,56px)}
.legal__head{grid-column:1/span 12;border-bottom:1px solid var(--rule);padding-bottom:clamp(24px,3vw,40px);display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:12px 24px}
.legal__head h1{font-size:clamp(30px,4.4vw,64px)}
.legal__body{grid-column:2/span 7}
.legal__toc{grid-column:10/span 3;align-self:start;position:sticky;top:80px;display:flex;flex-direction:column;gap:7px}
.legal__toc a{border:0;color:var(--fg-46);transition:color .2s}
.legal__toc a:hover{color:var(--fg)}
.legal section{padding-block:clamp(24px,3vw,38px);border-bottom:1px solid var(--rule-soft)}
.legal section:first-child{padding-top:0}
.legal section:last-child{border-bottom:0}
.legal h2{margin:10px 0 14px;font-size:clamp(19px,1.9vw,26px);font-weight:500;letter-spacing:-.022em;line-height:1.15}
.legal h3{margin:22px 0 8px;font-size:16px;font-weight:500;letter-spacing:-.01em}
.legal p{margin:0 0 14px;font-size:15.5px;line-height:1.62;color:var(--fg-70);max-width:66ch}
.legal p:last-child{margin-bottom:0}
.legal address{font-style:normal;font-size:15.5px;line-height:1.62;color:var(--fg-70)}
.legal ul{margin:0 0 14px;padding:0;list-style:none;display:grid;gap:7px;max-width:60ch}
.legal ul li{font-size:15px;line-height:1.55;color:var(--fg-70);padding-left:24px;position:relative}
.legal ul li::before{content:"—";position:absolute;left:0;color:var(--fg-30);font-family:var(--mono);font-size:10px;top:3px}

/* ── Fuß ────────────────────────────────────────── */
footer{border-top:1px solid var(--rule)}
footer .sheet{display:flex;flex-wrap:wrap;gap:10px 32px;justify-content:space-between;padding-top:18px;padding-bottom:18px}
footer a{border:0;color:var(--fg-46);transition:color .2s}
footer a:hover{color:var(--fg)}

/* ── Einblenden ─────────────────────────────────── */
.rv{opacity:0;transform:translateY(14px);transition:opacity .8s cubic-bezier(.2,.7,.3,1),transform .8s cubic-bezier(.2,.7,.3,1)}
.rv.in{opacity:1;transform:none}

/* ── Schmal ─────────────────────────────────────── */
@media(max-width:1080px){
  .open__mark{grid-column:1/span 12}
  .open__body{grid-column:1/span 12}
  .head__t{grid-column:2/span 11}
  .head__note{grid-column:2/span 11;max-width:52ch}
  .spec__name{grid-column:2/span 11}
  .spec__txt{grid-column:2/span 8}
  .spec__mat{grid-column:2/span 11;justify-content:flex-start}
  .job__ttl{grid-column:2/span 11}
  .job__client{grid-column:2/span 11;text-align:left}
  .job__c{grid-column:span 12}
  .job--a .job__fig,.job--b .job__fig,.job--c .job__fig{grid-column:1/span 12}
  .profil__fig{grid-column:1/span 6}
  .profil__txt{grid-column:1/span 12}
  .kontakt__t{grid-column:1/span 12}
  .kontakt__d{grid-column:1/span 12}
  .legal__body{grid-column:1/span 12}
  .legal__toc{grid-column:1/span 12;position:static;flex-direction:row;flex-wrap:wrap;gap:8px 20px;order:-1}
}
@media(max-width:900px){.linkstat{display:none}}
@media(max-width:720px){
  body{font-size:16px}
  .bar nav{display:none}
  .bar__geo{display:none}
  .marks{inset:8px}
  .job__list{grid-template-columns:1fr}
  .profil__fig{grid-column:1/span 12}
  .facts div{border-right:0;border-bottom:1px solid var(--rule-soft)}
  .lockline{letter-spacing:.28em}
  .foil__tag{letter-spacing:.26em}
}
@media(prefers-reduced-motion:reduce){.rv{opacity:1;transform:none;transition:none}html.link-up .led,html.link-up .port__leds i{animation:none}.port__cable{transition:none}}