/* ==========================================================================
   welter Projektentwicklung — Stylesheet
   Schriften: Archivo (Ueberschriften), Barlow (Text), IBM Plex Mono (Labels)
   Die Schriftdateien liegen in assets/fonts/ und werden vom eigenen Server
   geladen — kein Aufruf bei Google, siehe LIESMICH.txt.
   Fehlen die Dateien, greift automatisch eine System-Schrift.
   ========================================================================== */

@font-face{font-family:'Archivo'; font-style:normal; font-weight:400 700; font-display:swap;
  src:url('../fonts/archivo-latin.woff2') format('woff2');}
@font-face{font-family:'Barlow'; font-style:normal; font-weight:300; font-display:swap;
  src:url('../fonts/barlow-300-latin.woff2') format('woff2');}
@font-face{font-family:'Barlow'; font-style:normal; font-weight:400; font-display:swap;
  src:url('../fonts/barlow-400-latin.woff2') format('woff2');}
@font-face{font-family:'Barlow'; font-style:normal; font-weight:500; font-display:swap;
  src:url('../fonts/barlow-500-latin.woff2') format('woff2');}
@font-face{font-family:'IBM Plex Mono'; font-style:normal; font-weight:400; font-display:swap;
  src:url('../fonts/ibm-plex-mono-400-latin.woff2') format('woff2');}
@font-face{font-family:'IBM Plex Mono'; font-style:normal; font-weight:500; font-display:swap;
  src:url('../fonts/ibm-plex-mono-500-latin.woff2') format('woff2');}

:root{
  --ink:#191D22;
  --graphit:#2E333A;
  --graphit-2:#3B4149;
  --papier:#EDEDE9;
  --papier-2:#E2E3DE;
  --blau:#22496F;
  --linie:#9FB0BF;
  --linie-soft:#C6CEd5;
  --weiss:#FFFFFF;
  --display:'Archivo', 'Helvetica Neue', Arial, sans-serif;
  --body:'Barlow', 'Helvetica Neue', Arial, sans-serif;
  --mono:'IBM Plex Mono', ui-monospace, 'SF Mono', monospace;
  --pad:clamp(20px, 5vw, 72px);
  --foto:saturate(.92) contrast(1.03);
  /* Hero folgt standardmaessig den Objektbildern; fuer ein einzeln
     schwarzweisses Hero hier grayscale(1) contrast(1.05) eintragen */
  --foto-hero:var(--foto);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0; background:var(--papier); color:var(--ink);
  font-family:var(--body); font-weight:400; font-size:17px; line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
/* Wasserzeichen: Bauplan + Millimeterraster */
body::before{
  content:""; position:fixed; inset:0; z-index:0; pointer-events:none;
  background-image:url("../img/plan.jpg");
  background-size:820px auto; background-position:center top;
  filter:grayscale(1) contrast(.6) brightness(1.65);
  opacity:.10; mix-blend-mode:multiply;
}
body::after{
  content:""; position:fixed; inset:0; z-index:0; pointer-events:none; opacity:.5;
  background-image:
    linear-gradient(to right, rgba(34,73,111,.055) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(34,73,111,.055) 1px, transparent 1px);
  background-size:28px 28px;
}
main, header, footer{position:relative; z-index:1}
img{display:block; max-width:100%}
a{color:inherit}

/* ---------- Typo ---------- */
h1,h2,h3{font-family:var(--display); font-weight:600; margin:0; letter-spacing:-.015em; line-height:1.08}
h1{font-size:clamp(34px, 5.4vw, 62px); font-weight:700}
h2{font-size:clamp(26px, 3.4vw, 40px)}
h3{font-size:19px; font-weight:600; letter-spacing:0}
p{margin:0 0 1em}
.lead{font-size:clamp(18px,2vw,21px); font-weight:300; line-height:1.55}
.eyebrow{
  font-family:var(--mono); font-size:11px; font-weight:500; letter-spacing:.18em;
  text-transform:uppercase; color:var(--blau);
}
.muted{color:#5C6670}

/* ---------- Kopfzeile ---------- */
.top{
  position:sticky; top:0; z-index:20; display:flex; align-items:center; justify-content:space-between;
  gap:16px; padding:12px var(--pad); background:rgba(237,237,233,.86);
  backdrop-filter:blur(8px); border-bottom:1px solid var(--linie-soft);
}
.brand{display:flex; align-items:center; gap:12px; text-decoration:none}
.brand img{width:34px; height:34px; border-radius:7px}
.brand .wm{font-family:var(--display); font-weight:700; font-size:21px; letter-spacing:-.02em; line-height:1}
.brand .sub{font-family:var(--mono); font-size:8.5px; letter-spacing:.22em; text-transform:uppercase; color:#5C6670; margin-top:3px}
.nav{display:flex; gap:26px; font-family:var(--mono); font-size:11px; letter-spacing:.14em; text-transform:uppercase}
.nav a{text-decoration:none; padding-bottom:2px; border-bottom:1px solid transparent}
.nav a:hover, .nav a:focus-visible{border-bottom-color:var(--blau); color:var(--blau)}

/* ---------- Hero ---------- */
.hero{display:grid; grid-template-columns:minmax(0,44%) minmax(0,56%); background:var(--graphit); color:var(--weiss)}
.hero-text{padding:clamp(34px,5vw,76px) clamp(24px,4vw,60px); display:flex; flex-direction:column; justify-content:center}
.hero-text .eyebrow{color:#9DB6CC}
.hero h1{margin:18px 0 20px; max-width:15ch}
.hero p{color:#C9CED4; max-width:42ch; margin-bottom:28px}
.hero-img{position:relative; min-height:340px; background:#20242A}
.hero-img img{width:100%; height:100%; object-fit:cover; filter:var(--foto-hero)}
.cta{
  display:inline-flex; align-items:center; gap:10px; align-self:flex-start;
  font-family:var(--mono); font-size:12px; letter-spacing:.14em; text-transform:uppercase;
  text-decoration:none; color:var(--weiss); border:1px solid rgba(255,255,255,.45);
  padding:13px 22px; transition:background .2s ease, border-color .2s ease, color .2s ease;
}
.cta:hover, .cta:focus-visible{background:var(--weiss); color:var(--graphit); border-color:var(--weiss)}
.cta.dark{color:var(--ink); border-color:var(--ink)}
.cta.dark:hover, .cta.dark:focus-visible{background:var(--ink); color:var(--weiss)}

/* ---------- Maßkette (Signatur) ---------- */
.band{padding:clamp(48px,7vw,96px) var(--pad); border-bottom:1px solid var(--linie-soft)}
.masskette{display:grid; grid-template-columns:repeat(3,1fr); gap:clamp(20px,4vw,56px)}
.mass{position:relative; padding-top:26px; border-top:1px solid var(--linie)}
.mass::before, .mass::after{
  content:""; position:absolute; top:-6px; width:1px; height:13px; background:var(--linie);
}
.mass::before{left:0} .mass::after{right:0}
.mass .nr{font-family:var(--mono); font-size:11px; letter-spacing:.16em; color:var(--blau); display:block; margin-bottom:10px}
.mass h3{margin-bottom:8px}
.mass p{font-size:15.5px; color:#4E5761; margin:0}

/* ---------- Abschnitte ---------- */
.sec-head{display:grid; grid-template-columns:minmax(0,150px) minmax(0,1fr); gap:clamp(16px,3vw,48px); margin-bottom:clamp(28px,4vw,52px)}
.sec-head .code{font-family:var(--mono); font-size:11px; letter-spacing:.16em; color:var(--blau); padding-top:9px}
.sec-head p{max-width:62ch; margin:18px 0 0; color:#4E5761}

.profil{display:grid; grid-template-columns:minmax(0,150px) minmax(0,1fr); gap:clamp(16px,3vw,48px)}
.profil-body{max-width:66ch}
.profil-body p{color:#3C444C}

/* ---------- Objekte ---------- */
.objekte{display:grid; grid-template-columns:repeat(2,1fr); gap:clamp(20px,3vw,40px)}
.obj{background:var(--weiss); border:1px solid var(--linie-soft); padding:10px 10px 22px}
.obj figure{margin:0; overflow:hidden; background:var(--papier-2)}
.obj.wide{grid-column:1 / -1}
.obj.wide img{aspect-ratio:16/7}
/* Bildanmutung zentral steuerbar:
   Farbe (aktuell):  saturate(.92) contrast(1.03)
   Schwarzweiss:     grayscale(1) contrast(1.06) */
.obj img{
  width:100%; aspect-ratio:4/3; object-fit:cover; filter:var(--foto);
  transition:transform .5s cubic-bezier(.2,.7,.3,1), filter .4s ease;
}
.obj:hover img{transform:scale(1.03)}
.obj .meta{display:flex; gap:14px; padding:18px 12px 0; border-top:1px solid var(--linie-soft); margin-top:14px}
.obj .idx{font-family:var(--mono); font-size:11px; letter-spacing:.14em; color:var(--blau); white-space:nowrap; padding-top:3px}
.obj .ort{
  display:block; font-family:var(--mono); font-size:11px; letter-spacing:.14em;
  text-transform:uppercase; color:#6A737C; margin-top:7px;
}
.obj p{margin:9px 0 0; font-size:15.5px; color:#4E5761}

/* ---------- Referenzen ---------- */
.refs{border-top:1px solid var(--linie)}
.ref{
  display:grid; grid-template-columns:64px minmax(0,1fr) minmax(0,320px); gap:clamp(12px,2vw,32px);
  align-items:baseline; padding:22px 0; border-bottom:1px solid var(--linie-soft);
}
.ref .n{font-family:var(--mono); font-size:11px; letter-spacing:.14em; color:var(--blau)}
.ref .name{font-family:var(--display); font-weight:600; font-size:clamp(21px,2.6vw,31px); letter-spacing:-.02em}
.ref .art{font-family:var(--mono); font-size:11.5px; letter-spacing:.12em; text-transform:uppercase; color:#6A737C}

/* ---------- Kontakt ---------- */
.kontakt{background:var(--graphit); color:var(--weiss); padding:clamp(48px,7vw,96px) var(--pad)}
.kontakt h2{max-width:18ch}
.kontakt .grid{display:grid; grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr); gap:clamp(28px,5vw,72px); align-items:start}
.kontakt p{color:#C3C9CF; max-width:46ch}
.kontakt .eyebrow{color:#9DB6CC}
.daten{font-family:var(--mono); font-size:14px; line-height:2.05; letter-spacing:.02em}
.daten a{text-decoration:none; border-bottom:1px solid rgba(255,255,255,.3)}
.daten a:hover{border-bottom-color:var(--weiss)}
.daten .lbl{display:inline-block; min-width:100px; color:#8D97A1; font-size:11px; letter-spacing:.16em; text-transform:uppercase}

footer{
  display:flex; flex-wrap:wrap; gap:8px 28px; justify-content:space-between;
  padding:22px var(--pad); background:var(--ink); color:#8D97A1;
  font-family:var(--mono); font-size:11px; letter-spacing:.12em; text-transform:uppercase;
}
footer a{text-decoration:none}
footer a:hover{color:var(--weiss)}

/* ---------- Bewegung ---------- */
.rise{opacity:0; transform:translateY(14px); transition:opacity .7s ease, transform .7s cubic-bezier(.2,.7,.3,1)}
.rise.in{opacity:1; transform:none}
:focus-visible{outline:2px solid var(--blau); outline-offset:3px}


/* ---------- Impressum / Datenschutz ---------- */
.legal{padding:clamp(40px,6vw,88px) var(--pad); max-width:78ch}
.legal h1{font-size:clamp(28px,3.6vw,42px); margin-bottom:28px}
.legal h2{font-size:22px; margin:38px 0 12px}
.legal p, .legal li{color:#3C444C; font-size:16.5px}
.legal ul{padding-left:18px}
.legal a{color:var(--blau)}
.legal .zurueck{
  display:inline-block; margin-top:36px; font-family:var(--mono); font-size:11px;
  letter-spacing:.14em; text-transform:uppercase; text-decoration:none; color:var(--blau);
}
.legal .hinweis{
  border-left:2px solid var(--linie); padding:12px 0 12px 16px; margin:28px 0;
  font-size:15px; color:#5C6670;
}

@media (max-width:900px){
  .hero{grid-template-columns:1fr}
  .hero-img{min-height:260px; order:-1}
  .masskette{grid-template-columns:1fr; gap:26px}
  .sec-head, .profil{grid-template-columns:1fr}
  .sec-head .code{padding-top:0}
  .objekte{grid-template-columns:1fr}
  .obj.wide img{aspect-ratio:4/3}
  .ref{grid-template-columns:44px 1fr; row-gap:4px}
  .ref .art{grid-column:2}
  .kontakt .grid{grid-template-columns:1fr}
  .nav{display:none}
  .nav.mini{display:flex}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .rise{opacity:1; transform:none; transition:none}
  .obj img{transition:none}
}