/* ==========================================================
   LedWallFactory — Stylesheet
   Systemschriften bewusst: kein externer Font-Dienst,
   dadurch kein Datentransfer an Dritte (revDSG) und schnell.
   ========================================================== */

:root{
  --paper:#F1F2F3;
  --white:#FFFFFF;
  --ink:#1A1D20;
  --wall:#131519;
  --muted:#656A70;        /* 4.87:1 auf --paper, WCAG AA */
  --grey:#7A8288;
  --rule:#DCDEE0;
  --blue:#4FA3E3;
  --blue-dark:#2872AB;    /* 5.14:1 auf Weiss, WCAG AA */
  --max:64rem;
}

*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
main{display:block}

/* Sprunglink fuer Tastatur- und Screenreader-Nutzung */
.skip{position:absolute;left:-9999px;top:0;z-index:100;background:var(--ink);color:#fff;
  padding:.8rem 1.2rem;text-decoration:none;font-size:.95rem}
.skip:focus{left:0}
#inhalt{scroll-margin-top:0}

body{
  background:var(--paper);
  color:var(--ink);
  font-family:"Segoe UI",-apple-system,BlinkMacSystemFont,Roboto,"Helvetica Neue",Arial,sans-serif;
  font-size:17px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}

.wrap{width:100%;max-width:var(--max);margin:0 auto;padding:0 clamp(1.25rem,4vw,2.5rem)}

/* ---------- Kopf ---------- */
header{background:var(--white);border-bottom:1px solid var(--rule)}
.head{display:flex;align-items:center;justify-content:space-between;gap:1.5rem;padding:1.1rem 0;flex-wrap:wrap}
.logo{display:flex;align-items:center;gap:.7rem;text-decoration:none;color:var(--ink)}
.logo svg{width:38px;height:38px;flex:none;display:block}
.logo .name{font-size:1.2rem;font-weight:700;letter-spacing:-.022em;line-height:1.05}
.logo .name span{color:var(--grey)}
.logo .claim{font-size:.58rem;letter-spacing:.22em;color:var(--muted);margin-top:.15rem}

header nav{display:flex;gap:1.4rem;flex-wrap:wrap;align-items:center}
header nav a{color:var(--muted);text-decoration:none;font-size:.94rem;padding:.2rem 0;border-bottom:2px solid transparent}
header nav a:hover{color:var(--ink)}
header nav a.on{color:var(--ink);border-bottom-color:var(--blue)}
header nav a:focus-visible,.logo:focus-visible{outline:2px solid var(--ink);outline-offset:3px}

/* ---------- Hero ---------- */
.hero{background:var(--wall);color:#F4F5F6;padding:clamp(3rem,9vw,6rem) 0}
.hero h1{font-size:clamp(1.9rem,5.6vw,3.4rem);line-height:1.1;letter-spacing:-.03em;font-weight:600;max-width:17ch}
.hero p{margin-top:1.4rem;font-size:clamp(1.02rem,2.2vw,1.2rem);color:#B9BEC3;max-width:46ch;line-height:1.55}
.beam{height:5px;background:var(--blue)}

/* ---------- Abschnitte ---------- */
section{padding:clamp(2.75rem,7vw,4.75rem) 0}
section.alt{background:var(--white);border-top:1px solid var(--rule);border-bottom:1px solid var(--rule)}
h2{font-size:clamp(1.35rem,3.4vw,1.95rem);letter-spacing:-.022em;line-height:1.2;font-weight:600}
h3{font-size:1.06rem;font-weight:700;letter-spacing:-.012em}
.lead{margin-top:.9rem;max-width:52ch;color:var(--muted)}
p+p{margin-top:.9rem}

/* ---------- Zahlen ---------- */
.figures{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:1px;background:var(--rule);border:1px solid var(--rule);margin-top:2rem}
.figures div{background:var(--paper);padding:1.4rem 1.3rem}
.figures b{display:block;font-size:1.9rem;letter-spacing:-.03em;line-height:1.1}
.figures span{display:block;margin-top:.3rem;color:var(--muted);font-size:.9rem}

/* ---------- Kategorien ---------- */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(255px,1fr));gap:1.25rem;margin-top:2.25rem}
.card{background:var(--white);border:1px solid var(--rule);padding:1.5rem 1.4rem;display:flex;flex-direction:column}
.card .pitch{font-size:.78rem;letter-spacing:.1em;color:var(--blue-dark);font-weight:700}
.card h3{margin-top:.45rem}
.card p{margin-top:.6rem;font-size:.94rem;color:var(--muted);flex:1}
.card a{margin-top:1.1rem;font-size:.92rem;color:var(--ink);text-decoration:none;border-bottom:1px solid var(--blue);padding-bottom:2px;align-self:flex-start}
.card a:hover{color:var(--blue-dark)}

/* ---------- Bildplatz (bis eigene Fotos da sind) ---------- */
.shot{background:var(--wall);border:1px solid var(--rule);aspect-ratio:16/9;display:flex;align-items:center;justify-content:center;color:#4B5158;font-size:.85rem;letter-spacing:.06em}
.shot img{width:100%;height:100%;object-fit:cover;display:block}

/* ---------- Schritte ---------- */
.steps{counter-reset:s;margin-top:2.25rem;display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:1.75rem}
.steps.vier{grid-template-columns:repeat(4,minmax(0,1fr))}
@media (max-width:900px){.steps.vier{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:520px){.steps.vier{grid-template-columns:1fr}}
.steps li{counter-increment:s;list-style:none;padding-top:1rem;border-top:2px solid var(--blue)}
.steps li::before{content:counter(s);display:block;font-size:.8rem;font-weight:700;color:var(--blue-dark);margin-bottom:.4rem}
.steps h3{font-size:1rem}
.steps p{margin-top:.4rem;font-size:.92rem;color:var(--muted)}

/* ---------- Tabelle ---------- */
.tablewrap{margin-top:1.75rem;overflow-x:auto;-webkit-overflow-scrolling:touch}
.tablewrap table{margin-top:0}
table{border-collapse:collapse;width:100%;margin-top:1.75rem;font-size:.94rem}
th,td{text-align:left;padding:.7rem .8rem;border-bottom:1px solid var(--rule)}
th{font-weight:700;font-size:.82rem;letter-spacing:.04em;color:var(--muted)}
tbody tr:hover{background:var(--white)}

/* ---------- Rechner ---------- */
.calc{background:var(--white);border:1px solid var(--rule);padding:clamp(1.5rem,4vw,2.25rem);margin-top:2rem}
.calc label{display:block;font-size:.9rem;color:var(--muted);margin-bottom:.9rem}
.calc input[type=range]{width:100%;accent-color:var(--blue);height:1.6rem}
.calc .out{margin-top:1.5rem;padding-top:1.25rem;border-top:1px solid var(--rule);display:flex;gap:2rem;flex-wrap:wrap;align-items:baseline}
.calc .out b{font-size:2rem;letter-spacing:-.03em;line-height:1}
.calc .out em{font-style:normal;color:var(--muted);font-size:.94rem;max-width:34ch}
.scale{display:flex;justify-content:space-between;font-size:.78rem;color:var(--muted);margin-top:.2rem}

/* ---------- FAQ ---------- */
.faq{margin-top:2rem;border-top:1px solid var(--rule)}
.faq details{border-bottom:1px solid var(--rule)}
.faq summary{padding:1.05rem 0;cursor:pointer;font-weight:700;font-size:1rem;list-style:none;display:flex;justify-content:space-between;gap:1rem;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--blue-dark);font-weight:400;font-size:1.4rem;line-height:1}
.faq details[open] summary::after{content:"\2212"}
.faq summary:focus-visible{outline:2px solid var(--ink);outline-offset:2px}
.faq p{padding:0 0 1.15rem;color:var(--muted);max-width:60ch;font-size:.96rem}

/* ---------- Aufruf ---------- */
.cta{background:var(--wall);color:#F4F5F6;padding:clamp(2.5rem,7vw,4rem) 0}
.cta h2{color:#fff;max-width:20ch}
.cta p{margin-top:.9rem;color:#B9BEC3;max-width:48ch}
.btn{display:inline-block;margin-top:1.75rem;background:var(--blue);color:#0B0D0F;text-decoration:none;font-weight:700;padding:.85rem 1.6rem;font-size:.98rem}
.btn:hover{background:#6DB4E9}
.btn:focus-visible{outline:2px solid #fff;outline-offset:3px}

/* ---------- Fuss ---------- */
footer{background:var(--white);border-top:1px solid var(--rule);padding:2.5rem 0;font-size:.9rem;color:var(--muted)}
.foot{display:flex;justify-content:space-between;gap:2rem;flex-wrap:wrap}
footer a{color:var(--muted);text-decoration:none;border-bottom:1px solid transparent}
footer a:hover{color:var(--ink);border-bottom-color:var(--rule)}
footer .cols{display:flex;gap:1.5rem;flex-wrap:wrap}

@media (max-width:560px){
  header nav{gap:1rem;width:100%}
  header nav a{font-size:.88rem}
  .calc .out{gap:1rem}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{animation:none!important;transition:none!important}
}

/* ---------- Fotos ---------- */
.figure{margin:0}
.figure picture,.figure img{display:block;width:100%;height:auto}
.figure figcaption{margin-top:.85rem;font-size:.88rem;color:var(--muted);max-width:62ch;line-height:1.5}
.figure figcaption b{color:var(--ink);font-weight:700}
.bleed{background:var(--wall)}
.bleed .wrap{padding-top:0;padding-bottom:0}
.bleed .figure img{max-height:78vh;object-fit:cover}
.bleed figcaption{padding:1.1rem 0 0;color:#9AA1A8}
.bleed figcaption b{color:#F4F5F6}
.duo{display:grid;grid-template-columns:1fr 1fr;gap:1.25rem;margin-top:2rem}
@media (max-width:680px){.duo{grid-template-columns:1fr}}

/* ---------- Bildraster Werksfotos ---------- */
.trio{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:1rem;margin-top:2rem}
.trio figure{margin:0}
.trio img{width:100%;height:auto;display:block;background:var(--wall)}
.trio figcaption{margin-top:.6rem;font-size:.85rem;color:var(--muted);line-height:1.45}

/* ---------- Inhaltsverzeichnis ---------- */
.toc{margin-top:2rem;background:var(--white);border:1px solid var(--rule);padding:1.5rem 1.75rem}
.toc ol{margin:0;padding-left:1.3rem;columns:2;column-gap:2.5rem}
.toc li{margin:.35rem 0;break-inside:avoid}
.toc a{color:var(--ink);text-decoration:none;border-bottom:1px solid transparent;font-size:.96rem}
.toc a:hover{border-bottom-color:var(--blue)}
@media (max-width:620px){.toc ol{columns:1}}

/* ---------- Checkliste ---------- */
.checklist{margin-top:1.75rem;padding-left:0;counter-reset:c;list-style:none}
.checklist li{counter-increment:c;position:relative;padding:0 0 1.15rem 2.6rem;color:var(--muted);line-height:1.6}
.checklist li::before{content:counter(c);position:absolute;left:0;top:.1rem;width:1.8rem;height:1.8rem;
  background:var(--blue);color:#0B0D0F;font-weight:700;font-size:.85rem;display:flex;align-items:center;justify-content:center}
.checklist b{color:var(--ink)}

/* Sprungziele nicht unter den Kopf rutschen lassen */
section[id]{scroll-margin-top:1rem}

/* ==========================================================
   Mobile: Navigation zweizeilig unter dem Logo, alle Punkte sichtbar
   ========================================================== */
@media (max-width:720px){
  .head{flex-direction:column;align-items:stretch;gap:.8rem;padding:1rem 0 .4rem}
  .logo{align-self:flex-start}
  header nav{display:grid;grid-template-columns:repeat(4,max-content);justify-content:space-between;
    gap:.1rem 1rem;width:100%;border-top:1px solid var(--rule);padding-top:.5rem}
  header nav a{white-space:nowrap;font-size:.9rem;padding:.45rem 0}
}
@media (max-width:360px){
  header nav{grid-template-columns:repeat(3,max-content)}
}

/* Tabellen auf schmalen Displays horizontal scrollbar statt gequetscht */
@media (max-width:620px){
  /* Tabelle behaelt ihre Semantik, der Container scrollt.
     min-width verhindert gequetschte Spalten, Text darf umbrechen. */
  .tablewrap table{min-width:30rem}
  th,td{padding:.6rem .7rem;font-size:.9rem}
  .figures div{padding:1.15rem 1.1rem}
  .figures b{font-size:1.6rem}
  .hero{padding:2.5rem 0}
  .cta .btn{width:100%;text-align:center}
  .contact p,.body p{max-width:none}
}

/* Touch-Ziele: Links im Fliesstext etwas grosszuegiger */
@media (pointer:coarse){
  header nav a,footer a,.card a{padding-top:.35rem;padding-bottom:.35rem}
  .faq summary{padding:1.25rem 0}
}

/* Person (Referenz) */
.person{display:grid;grid-template-columns:200px 1fr;gap:clamp(1.5rem,4vw,3rem);align-items:start;margin-top:2rem}
.person .lead{margin-top:0}
.person p+p{margin-top:.9rem}
@media (max-width:680px){.person{grid-template-columns:1fr}.person .figure{max-width:160px}}

/* Montage-Geschichte (Referenz) */
.story h3{margin-top:2.25rem}
.story p{max-width:62ch}
.story h3+p{margin-top:.6rem}
.story p+p{margin-top:.9rem}
.story .duo{margin-top:2.25rem;margin-bottom:.5rem}

/* Fix 17.09.2026: Kopf behaelt den seitlichen Innenabstand (.head ueberschrieb .wrap) */
.wrap.head{padding-left:clamp(1.25rem,4vw,2.5rem);padding-right:clamp(1.25rem,4vw,2.5rem)}
html,body{overflow-x:clip}