/* =========================================================
   Ingenieurbüro Schad — gemeinsames Stylesheet
   Aufbau: 1 Grundlagen · 2 Kopfbereich · 3 Startseite
           4 Abschnitte · 5 Unterseiten · 6 Fußbereich · 7 Mobil
   ========================================================= */

/* ---------- 1 Grundlagen ---------- */
:root{
  --paper:#F6F8F9;
  --card:#FFFFFF;
  --ink:#17242E;
  --ink-soft:#22333F;
  --slate:#4A5C6C;
  --amber:#DD8500;
  --amber-dark:#B96F00;
  --line:#D9E1E6;
  --grid:#E8EEF1;
  --on-dark:#EDF2F5;
  --on-dark-soft:#A9B8C4;
  --mono:'Source Code Pro',ui-monospace,monospace;
  --sans:'Be Vietnam Pro',system-ui,sans-serif;
  --wrap:1060px;
  --gutter:24px;
  --header-h:64px;
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}

body{
  font-family:var(--sans);
  background:var(--paper);
  color:var(--ink);
  line-height:1.6;
  font-size:17px;
  -webkit-text-size-adjust:100%;
}

a{color:inherit}
img,svg{max-width:100%}

a:focus-visible,summary:focus-visible{
  outline:2px solid var(--amber);outline-offset:3px;border-radius:2px;
}

/* Sprungziele nicht unter der klebenden Kopfleiste verstecken */
[id]{scroll-margin-top:calc(var(--header-h) + 12px)}

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

/* Rasterspalten dürfen schmaler werden als ihr breitester Inhalt.
   Ohne diese Regel sprengen die Zonendatei-Zeilen auf Mobilgeräten das Layout. */
.hero-inner>*,.logo-inner>*,.contact-inner>*,.roles>*,.refs>*,.value-grid>*{min-width:0}

h1,h2,h3{overflow-wrap:break-word;hyphens:auto}
h1{font-size:clamp(31px,7vw,58px);line-height:1.1;font-weight:600;letter-spacing:-.02em;margin-bottom:20px}
h2{font-size:clamp(25px,4.6vw,36px);font-weight:600;letter-spacing:-.015em;margin-bottom:14px}
h3{font-weight:600}

.eyebrow{
  font-family:var(--mono);font-size:13px;letter-spacing:.08em;
  text-transform:uppercase;color:var(--amber-dark);margin-bottom:12px;
}
.section-lede{color:var(--slate);max-width:62ch;margin-bottom:44px}

.btn{
  display:inline-block;text-decoration:none;font-weight:500;font-size:16px;
  padding:13px 24px;border-radius:6px;text-align:center;
  transition:background .15s,border-color .15s;
}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:var(--ink-soft)}
.btn-ghost{border:1px solid var(--line);background:var(--card);color:var(--ink)}
.btn-ghost:hover{border-color:var(--slate)}

.raster{
  background-image:
    linear-gradient(var(--grid) 1px,transparent 1px),
    linear-gradient(90deg,var(--grid) 1px,transparent 1px);
  background-size:28px 28px;
}

/* ---------- 2 Kopfbereich ---------- */
header{
  position:sticky;top:0;z-index:20;
  background:rgba(246,248,249,.94);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;justify-content:space-between;height:var(--header-h);gap:16px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;font-weight:600;letter-spacing:.01em}
.brand img{display:block;width:auto;height:34px}
.brand span{white-space:nowrap}

.nav-links{display:flex;gap:28px;list-style:none;margin:0}
.nav-links a{text-decoration:none;font-size:15px;color:var(--slate)}
.nav-links a:hover{color:var(--ink)}

/* Klappmenü (nur mobil sichtbar, funktioniert ohne JavaScript) */
.menu{display:none}
.menu>summary{
  list-style:none;cursor:pointer;
  width:44px;height:44px;display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:6px;background:var(--card);
}
.menu>summary::-webkit-details-marker{display:none}
.menu>summary::after{
  content:"";width:18px;height:2px;background:var(--ink);
  box-shadow:0 -6px 0 var(--ink),0 6px 0 var(--ink);
}
.menu[open]>summary::after{box-shadow:0 -6px 0 var(--ink),0 6px 0 var(--ink);opacity:.65}
.menu-panel{
  position:absolute;right:var(--gutter);top:calc(var(--header-h) - 6px);
  min-width:200px;list-style:none;margin:0;padding:8px;
  background:var(--card);border:1px solid var(--line);border-radius:8px;
  box-shadow:0 12px 28px rgba(23,36,46,.10);
}
.menu-panel a{
  display:block;padding:11px 14px;text-decoration:none;
  font-size:16px;color:var(--slate);border-radius:5px;
}
.menu-panel a:hover{background:var(--paper);color:var(--ink)}

/* ---------- 3 Startseite ---------- */
.hero{border-bottom:1px solid var(--line)}
.hero-inner{
  display:grid;grid-template-columns:1.15fr .85fr;gap:48px;
  align-items:center;padding:88px 0 96px;
}
.zone{
  font-family:var(--mono);font-size:13px;line-height:2;color:var(--slate);
  background:var(--card);border:1px solid var(--line);
  border-radius:4px;padding:6px 12px;margin-bottom:26px;
  max-width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch;
}
.zone>span{display:block;white-space:nowrap}
.zone b{color:var(--amber-dark);font-weight:500}

h1 .subline{
  display:block;font-size:clamp(18px,3.6vw,28px);font-weight:500;
  color:var(--amber-dark);margin-top:10px;letter-spacing:-.01em;
}
.hero .lede{font-size:19px;color:var(--slate);max-width:46ch;margin-bottom:34px}
.cta-row{display:flex;gap:14px;flex-wrap:wrap}

/* animiertes Logo */
.puzzle{display:flex;justify-content:center}
.puzzle svg{width:min(340px,78vw);height:auto;overflow:visible}
.puzzle .dot{fill:var(--slate)}
.puzzle .frame,.puzzle .solution{
  fill:none;stroke-width:26;stroke-linecap:round;stroke-linejoin:round;
  stroke-dasharray:100;stroke-dashoffset:100;
}
.puzzle .frame{stroke:var(--slate);animation:draw .9s ease-out .4s forwards}
.puzzle .solution{stroke:var(--amber-dark);stroke-width:34;animation:draw 2.6s ease-in-out 1.4s forwards}
@keyframes draw{to{stroke-dashoffset:0}}

.puzzle-caption{
  text-align:center;font-family:var(--mono);font-size:12.5px;
  color:var(--slate);margin-top:14px;text-wrap:balance;
}

/* ---------- 4 Abschnitte ---------- */
section{padding:84px 0}

/* Leistungen */
.roles{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.role{background:var(--card);border:1px solid var(--line);border-radius:8px;padding:28px 26px}
.role .tag{
  font-family:var(--mono);font-size:12px;letter-spacing:.06em;
  color:var(--amber-dark);border:1px solid currentColor;
  display:inline-block;padding:3px 9px;border-radius:99px;margin-bottom:14px;
}
.role h3{font-size:19px;margin-bottom:8px}
.role p{font-size:15.5px;color:var(--slate)}

/* Werte */
.values{background:var(--ink);color:var(--on-dark)}
.values .eyebrow{color:var(--amber)}
.values h2{color:#fff}
.values .section-lede{color:var(--on-dark-soft)}
.value-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:36px}
.value h3{font-size:17px;margin-bottom:6px;color:#fff}
.value p{font-size:15px;color:var(--on-dark-soft)}
.value .rule{width:34px;height:3px;background:var(--amber);margin-bottom:14px;border-radius:2px}
.docking{margin-top:52px;border-left:3px solid var(--amber);padding-left:22px;max-width:72ch}
.docking .tag{font-family:var(--mono);font-size:12.5px;color:var(--amber);display:block;margin-bottom:10px}
.docking p{color:#C7D3DC;font-size:16.5px}
.docking b{color:#fff;font-weight:500}

/* Unser Logo */
.logo-story{background:var(--card);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.logo-inner{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center}
.logo-story p{color:var(--slate);margin-bottom:18px;max-width:62ch}
.logo-story .closing{
  color:var(--ink);font-weight:500;
  border-left:3px solid var(--amber);padding-left:16px;margin-top:26px;
}
.logo-col{display:flex;flex-direction:column;gap:22px}
.logo-figure{
  display:flex;flex-direction:column;align-items:center;
  padding:36px;background:var(--paper);
  border:1px solid var(--line);border-radius:8px;
}
.logo-figure img{width:min(260px,52vw);height:auto}
.logo-figure figcaption{
  font-family:var(--mono);font-size:12.5px;color:var(--slate);
  width:100%;margin-top:16px;
}
.logo-figure.alt img{
  width:min(190px,38vw);opacity:.62;filter:saturate(.55);
  transition:opacity .25s,filter .25s;
}
.logo-figure.alt:hover img{opacity:1;filter:none}

/* Aus der Praxis */
.refs{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.ref{
  background:var(--card);border:1px solid var(--line);border-radius:8px;
  padding:24px;font-size:15.5px;color:var(--slate);
}
.ref b{color:var(--ink);font-weight:600;display:block;margin-bottom:6px}

/* Kontakt */
.contact{background:var(--card);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.contact-inner{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:start}
.contact .section-lede{margin-bottom:28px}
address{
  font-style:normal;font-family:var(--mono);font-size:14.5px;color:var(--slate);
  border-left:3px solid var(--amber);padding-left:18px;line-height:1.9;
  overflow-wrap:anywhere;
}

/* ---------- 5 Unterseiten (Impressum, Datenschutz) ---------- */
.page-head{border-bottom:1px solid var(--line);padding:64px 0 56px}
.legal{padding:64px 0 20px}
.legal section{max-width:74ch;margin-bottom:52px;padding:0}
.legal h3{font-size:18px;margin:26px 0 8px}
.legal p{color:var(--slate);margin-bottom:14px}
.legal ul{color:var(--slate);margin:0 0 14px 20px}
.legal li{margin-bottom:6px}
.legal .card{
  background:var(--card);border:1px solid var(--line);border-radius:8px;
  padding:28px 26px;margin-bottom:22px;
}
.legal dl{display:grid;grid-template-columns:190px 1fr;gap:10px 20px;font-size:16px;color:var(--slate)}
.legal dt{font-family:var(--mono);font-size:13.5px;color:var(--amber-dark);padding-top:2px}
.legal dd{color:var(--ink);overflow-wrap:anywhere}

/* ---------- 6 Fußbereich ---------- */
footer{padding:30px 0;font-size:14px;color:var(--slate);border-top:1px solid var(--line)}
.foot{display:flex;justify-content:space-between;gap:12px 16px;flex-wrap:wrap}
footer a{color:var(--slate)}

/* ---------- 7 Mobil ---------- */
@media(max-width:900px){
  .hero-inner,.logo-inner,.contact-inner{grid-template-columns:1fr}
  .hero-inner{gap:40px;padding:56px 0 64px}
  .logo-inner{gap:36px}
  .contact-inner{gap:36px}
  .value-grid{grid-template-columns:repeat(2,1fr);gap:30px}
}

@media(max-width:720px){
  :root{--gutter:20px}
  body{font-size:16px}
  section{padding:56px 0}
  .nav-links{display:none}
  .menu{display:block}
  .roles,.refs,.value-grid{grid-template-columns:1fr}
  .value-grid{gap:26px}
  .hero .lede{font-size:17px}
  .section-lede{margin-bottom:32px}
  .docking{margin-top:38px;padding-left:16px}
  .docking p{font-size:15.5px}
  .logo-figure{padding:26px 20px}
  .legal dl{grid-template-columns:1fr;gap:2px}
  .legal dd{margin-bottom:14px}
  .legal section{margin-bottom:40px}
  .page-head{padding:48px 0 40px}
  .legal{padding:48px 0 10px}
  .foot{flex-direction:column;gap:8px}
  .foot a{display:inline-block;padding:8px 0}
}

@media(max-width:560px){
  .brand span{
    /* Schriftzug weicht dem Klappmenü, das Logo bleibt */
    font-size:15px;
  }
  .zone{font-size:11.5px;padding:6px 10px}
  .cta-row{flex-direction:column;align-items:stretch}
  .btn{width:100%}
  .hero-inner{padding:44px 0 52px}
  .logo-figure img{width:min(260px,62vw)}
  .logo-figure.alt img{width:min(190px,46vw)}
}

@media(max-width:380px){
  .brand span{display:none}
}

/* Bewegung reduzieren */
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .puzzle .frame,.puzzle .solution{animation:none;stroke-dashoffset:0}
  *{transition:none!important}
}

/* Druckausgabe */
@media print{
  header,.cta-row,.menu{display:none}
  body{background:#fff;font-size:11pt}
  .values{background:#fff;color:var(--ink)}
  .values h2,.value h3{color:var(--ink)}
  .values .section-lede,.value p,.docking p{color:var(--slate)}
  section{padding:24px 0;break-inside:avoid}
}