/* Werklotse Web-Baukasten 1.0
   Layout: Leistungsverzeichnis wie auf der Baustelle, Zollstock als Maßband, alles an einer linken Kante.
   Schriften liegen lokal (DSGVO), keine externen Ressourcen. */
@import url("../fonts/archivo/wdth.css");
@import url("../fonts/source-sans-3/400.css");
@import url("../fonts/source-sans-3/600.css");
@import url("../fonts/source-sans-3/700.css");
@import url("../fonts/ibm-plex-mono/400.css");
@import url("../fonts/ibm-plex-mono/500.css");
@import url("../fonts/noto-sans-arabic/600.css");

:root{
  --bg:#F2F1EC;          /* Betonweiß */
  --surface:#FFFFFF;
  --fg:#1F2328;          /* Graphit */
  --muted:#5D6166;       /* Steingrau */
  --line:#D4D1C8;
  --rule:#E3A80F;        /* Zollstockgelb, nur Fläche */
  --rule-ink:#1F2328;
  --mark:#8A5A00;        /* dunkles Ocker für Text-Akzente */
  --ok:#2F6B3A;
  --warn:#8A5A00;
  --f-display:"Archivo Variable","Archivo","Arial Narrow",Arial,sans-serif;
  --f-body:"Source Sans 3","Segoe UI",Helvetica,Arial,sans-serif;
  --f-mono:"IBM Plex Mono",ui-monospace,"SFMono-Regular",Menlo,monospace;
  --step--1:clamp(.82rem,.79rem + .15vw,.9rem);
  --step-0:clamp(1rem,.96rem + .2vw,1.1rem);
  --step-1:clamp(1.2rem,1.1rem + .5vw,1.45rem);
  --step-2:clamp(1.5rem,1.3rem + 1vw,2rem);
  --step-3:clamp(1.9rem,1.5rem + 2vw,2.9rem);
  --step-4:clamp(2.3rem,1.6rem + 3.6vw,4.4rem);
  --w:68rem;
  color-scheme:light;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#16181B;--surface:#1E2125;--fg:#ECEAE4;--muted:#A3A6AA;--line:#33373C;
    --rule:#E3A80F;--rule-ink:#1F2328;--mark:#E9B949;--ok:#7FC48B;--warn:#E9B949;color-scheme:dark}
}
:root[data-theme="dark"]{
  --bg:#16181B;--surface:#1E2125;--fg:#ECEAE4;--muted:#A3A6AA;--line:#33373C;
  --rule:#E3A80F;--rule-ink:#1F2328;--mark:#E9B949;--ok:#7FC48B;--warn:#E9B949;color-scheme:dark}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--fg);font-family:var(--f-body);font-size:var(--step-0);line-height:1.6;
  padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
img{max-width:100%;height:auto}
[hidden]{display:none!important}
.wrap{max-width:var(--w);margin-inline:auto}
a{color:inherit;text-decoration-color:var(--rule);text-decoration-thickness:2px;text-underline-offset:3px}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid var(--rule);outline-offset:3px}
h1,h2,h3{font-family:var(--f-display);text-wrap:balance;line-height:1.1;margin:0}
p{margin:0}
.prose{display:grid;gap:.9rem;max-width:62ch}
.prose p,.j{text-align:justify;hyphens:auto;-webkit-hyphens:auto}
.label{font-family:var(--f-mono);font-size:var(--step--1);letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.ph{font-family:var(--f-mono);font-size:.92em;background:var(--surface);border:1px dashed var(--muted);padding:.05em .35em;border-radius:3px;white-space:nowrap}
.mono{font-family:var(--f-mono)}
.num{font-variant-numeric:tabular-nums}

/* Kopf */
header.top{display:flex;align-items:center;justify-content:space-between;gap:1rem;flex-wrap:wrap;padding-block:1.1rem}
.wordmark{font-family:var(--f-display);font-weight:800;font-variation-settings:"wdth" 112;font-size:1.45rem;letter-spacing:-.01em;text-decoration:none;white-space:nowrap}
.wordmark span{display:inline-block;width:.62em;height:.62em;border-radius:50%;background:var(--rule);margin-inline:.03em;position:relative;top:.02em}
nav ul{display:flex;gap:1.1rem;list-style:none;margin:0;padding:0;flex-wrap:wrap}
nav a{text-decoration:none;font-weight:600;font-size:var(--step--1)}
nav a:hover,nav a[aria-current="page"]{text-decoration:underline}
.crumb{font-family:var(--f-mono);font-size:var(--step--1);color:var(--muted);padding-top:.5rem}
.crumb a{text-decoration:none}

/* Einstieg */
.hero{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);gap:clamp(1.5rem,4vw,3.5rem);align-items:end;padding-block:clamp(2rem,6vw,4.5rem) 2rem}
.hero h1{font-size:var(--step-4);font-weight:850;font-variation-settings:"wdth" 118;letter-spacing:-.02em;text-transform:uppercase}
.hero h1 em{font-style:normal;display:block;font-variation-settings:"wdth" 70;font-weight:700;color:var(--mark)}
.hero .lead{font-size:var(--step-1);line-height:1.5;max-width:36ch}
.hero.sub h1{font-size:var(--step-3)}
.cta{display:flex;flex-direction:column;gap:.9rem;min-width:0}
.btnrow{display:flex;gap:.6rem;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:.5rem;font:inherit;font-weight:700;padding:.75rem 1.1rem;border-radius:4px;border:2px solid var(--fg);text-decoration:none;background:var(--fg);color:var(--bg);cursor:pointer}
.btn.ghost{background:transparent;color:var(--fg)}
.btn:hover{filter:brightness(1.1)}

/* Zollstock */
.ruler{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));background:var(--rule);color:var(--rule-ink);border-radius:2px;height:58px;overflow:hidden}
.ruler.thin{height:34px}
.seg{position:relative;border-right:2px solid rgba(31,35,40,.55);
  background-image:repeating-linear-gradient(90deg,rgba(31,35,40,.9) 0 1px,transparent 1px 100%),repeating-linear-gradient(90deg,rgba(31,35,40,.9) 0 1px,transparent 1px 100%),repeating-linear-gradient(90deg,rgba(31,35,40,.9) 0 1px,transparent 1px 100%);
  background-size:5% 22%,50% 45%,100% 60%;background-repeat:repeat-x}
.seg:last-child{border-right:0}
.seg::after{content:"";position:absolute;right:-5px;top:50%;width:8px;height:8px;border-radius:50%;background:rgba(31,35,40,.55);transform:translateY(-50%)}
.seg:last-child::after{display:none}
.seg b,.seg i{position:absolute;bottom:6px;font-family:var(--f-mono);font-weight:500;font-style:normal;font-size:.85rem}
.seg b{left:52%}.seg i{right:6px}
.ruler.thin .seg b,.ruler.thin .seg i{font-size:.72rem;bottom:3px}
@media (max-width:560px){.seg b{display:none}}

/* Abschnitte */
section{padding-block:clamp(2.5rem,6vw,4.5rem);border-top:1px solid var(--line)}
section.first{border-top:0}
.head{display:grid;grid-template-columns:minmax(0,14rem) minmax(0,1fr);gap:1.5rem;margin-bottom:2rem}
.head h2{font-size:var(--step-2);font-weight:800;font-variation-settings:"wdth" 108}

/* Leistungsverzeichnis */
.lv-box{overflow-x:auto}
.lv{width:100%;border-collapse:collapse;font-variant-numeric:tabular-nums}
.lv th{font-family:var(--f-mono);font-weight:500;font-size:var(--step--1);letter-spacing:.05em;text-transform:uppercase;color:var(--muted);text-align:left;padding:.5rem .6rem;border-bottom:2px solid var(--fg)}
.lv td{padding:.9rem .6rem;border-bottom:1px solid var(--line);vertical-align:top}
.lv tr.titel td{padding-top:1.6rem;border-bottom:1px solid var(--fg);font-family:var(--f-display);font-weight:800;font-variation-settings:"wdth" 108;font-size:var(--step-1)}
.lv .pos{font-family:var(--f-mono);color:var(--muted);white-space:nowrap;width:4.5rem}
.lv .kurz strong{display:block;font-size:1.05em}
.lv .kurz span{color:var(--muted)}
.lv .kurz ul{margin:.4rem 0 0;padding-left:1.1rem;color:var(--muted)}
.lv .ep{font-family:var(--f-mono);white-space:nowrap;text-align:right;width:13rem}
.lv .ep small{display:block;color:var(--muted);font-size:.8em;white-space:normal}
.lv-note{margin-top:1rem;color:var(--muted);font-size:var(--step--1)}
@media (max-width:640px){
  .lv thead{display:none}
  .lv,.lv tbody,.lv tr,.lv td{display:block;width:100%}
  .lv tr:not(.titel){display:grid;grid-template-columns:auto minmax(0,1fr);column-gap:.8rem;border-bottom:1px solid var(--line);padding-block:.8rem}
  .lv tr:not(.titel) td{border:0;padding:0}
  .lv .ep{grid-column:2;text-align:left;width:auto;margin-top:.35rem}
}

/* Ablauf */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1.2rem;list-style:none;margin:0;padding:0;counter-reset:s}
.steps li{counter-increment:s;border-top:4px solid var(--fg);padding-top:.9rem;min-width:0}
.steps li::before{content:counter(s);font-family:var(--f-display);font-weight:800;font-size:var(--step-2);display:block;line-height:1;margin-bottom:.5rem}
.steps h3{font-size:var(--step-0);font-weight:700;margin-bottom:.35rem;font-family:var(--f-body)}
.steps p{color:var(--muted);font-size:.97em}
.steps.three{grid-template-columns:repeat(3,minmax(0,1fr))}

/* Werkzeug-Kasten (interaktiv) */
.tool{background:var(--surface);border:1px solid var(--line);border-top:6px solid var(--rule);padding:clamp(1rem,3vw,1.8rem);display:grid;gap:1.2rem}
.tool h3{font-size:var(--step-1);font-weight:800;font-variation-settings:"wdth" 106}
.tool .grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,14rem),1fr));gap:1rem}
.field{display:grid;gap:.35rem;min-width:0}
.field label{font-weight:600;font-size:var(--step--1)}
.field small{color:var(--muted);font-size:.8em}
input,select,textarea{font:inherit;color:var(--fg);background:var(--bg);border:1px solid var(--muted);border-radius:4px;padding:.6rem .7rem;width:100%;min-width:0}
input[type="range"]{padding:0;accent-color:var(--fg)}
input[type="checkbox"],input[type="radio"]{width:auto;accent-color:var(--fg)}
.result{border-top:2px solid var(--fg);padding-top:1rem;display:grid;gap:.6rem}
.big{font-family:var(--f-display);font-weight:850;font-variation-settings:"wdth" 112;font-size:var(--step-3);line-height:1}
.figures{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,11rem),1fr));gap:1rem}
.figures div{border-left:4px solid var(--rule);padding-left:.8rem;min-width:0}
.figures .label{display:block}
.figures .val{font-family:var(--f-mono);font-size:var(--step-1);font-variant-numeric:tabular-nums}
.disclaimer{color:var(--muted);font-size:var(--step--1)}
.checklist{list-style:none;margin:0;padding:0;display:grid;gap:.5rem}
.checklist label{display:flex;gap:.6rem;align-items:flex-start;cursor:pointer}
.checklist input{margin-top:.35rem}

/* Häufige Fragen */
.faq{display:grid;gap:0;border-top:1px solid var(--fg)}
.faq details{border-bottom:1px solid var(--line);padding-block:.9rem}
.faq summary{cursor:pointer;font-weight:700;list-style:none;display:flex;justify-content:space-between;gap:1rem}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-family:var(--f-mono);color:var(--muted)}
.faq details[open] summary::after{content:"–"}
.faq details p{margin-top:.6rem;max-width:68ch;text-align:justify;hyphens:auto;color:var(--fg)}

/* Sprachen, Grenzen, Kontakt */
.langs{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border:1px solid var(--line);background:var(--surface)}
.langs div{padding:1.1rem 1.2rem;border-right:1px solid var(--line);border-bottom:1px solid var(--line);min-width:0}
.langs div:nth-child(3n){border-right:0}
.langs div:nth-last-child(-n+3){border-bottom:0}
.langs .code{font-family:var(--f-mono);font-size:var(--step--1);color:var(--muted);display:block;margin-bottom:.25rem}
.langs p{font-size:var(--step-1);font-weight:600}
.langs [dir="rtl"]{text-align:right;font-family:"Noto Sans Arabic",var(--f-body)}
.grenzen{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1.5rem}
.grenzen ul{margin:0;padding-left:1.1rem;display:grid;gap:.45rem}
.grenzen h3{font-size:var(--step-0);font-family:var(--f-body);font-weight:700;margin-bottom:.6rem}
.kontakt{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1rem}
.kontakt div{background:var(--surface);border:1px solid var(--line);padding:1.1rem 1.2rem;min-width:0}
.kontakt .val{font-family:var(--f-mono);display:block;margin-top:.3rem;word-break:break-word}
.form{display:grid;gap:1rem;max-width:40rem}
.form .ok{border-left:4px solid var(--ok);padding:.6rem .9rem;background:var(--surface)}

/* Querverweise */
.related{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,15rem),1fr));gap:1rem}
.related a{display:grid;gap:.3rem;text-decoration:none;border:1px solid var(--line);background:var(--surface);padding:1rem 1.1rem}
.related a:hover{border-color:var(--fg)}
.related strong{font-family:var(--f-display);font-variation-settings:"wdth" 106}
.related span{color:var(--muted);font-size:var(--step--1)}

footer{border-top:1px solid var(--line);padding-block:2rem 3rem;color:var(--muted);font-size:var(--step--1);display:flex;flex-wrap:wrap;justify-content:space-between;gap:1rem}
footer nav ul{gap:.9rem}

@media (max-width:860px){
  .hero{grid-template-columns:minmax(0,1fr);align-items:start}
  .head{grid-template-columns:minmax(0,1fr);gap:.8rem}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .steps.three{grid-template-columns:minmax(0,1fr)}
  .kontakt{grid-template-columns:minmax(0,1fr)}
}
@media (max-width:560px){
  .steps{grid-template-columns:minmax(0,1fr)}
  .langs{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
  .langs div{border-right:1px solid var(--line)!important;border-bottom:1px solid var(--line)!important}
  .langs div:nth-child(2n){border-right:0!important}
  .langs div:nth-last-child(-n+2){border-bottom:0!important}
  .grenzen{grid-template-columns:minmax(0,1fr)}
}
@media (prefers-reduced-motion:no-preference){
  .ruler .seg{animation:unfold .7s cubic-bezier(.2,.7,.2,1) both}
  .ruler .seg:nth-child(2){animation-delay:.06s}.ruler .seg:nth-child(3){animation-delay:.12s}
  .ruler .seg:nth-child(4){animation-delay:.18s}.ruler .seg:nth-child(5){animation-delay:.24s}
  @keyframes unfold{from{transform:scaleX(.92);transform-origin:left}to{transform:none}}
}
@media print{
  body{background:#fff;color:#000}
  header.top nav,.btnrow,.ruler{display:none}
  section{break-inside:avoid}
}