/* ============================================================
   IB Zinta – Ingenieurbüro für Luft- & Raumfahrttechnik
   Design-Tokens
   ============================================================ */
:root{
  --ink:#141210;          /* Nacht-Vorfeld: fast Schwarz, warm – abgestimmt aufs Logo (#3d3a35) */
  --ink-2:#1c1916;
  --paper:#efedea;        /* warmes Papier-Grau */
  --text-dark:#26221d;
  --text-light:#edeae6;
  --muted-on-dark:#a49d92;
  --muted-on-light:#645e55;
  --accent:#c3a877;       /* gedämpftes Messing – warm, passend zu Logo und S/W-Fotografie */
  --line-on-dark:rgba(237,234,230,.16);
  --line-on-light:rgba(38,34,29,.16);
  --header-h:76px;
}

@font-face{
  font-family:"Inter";
  font-style:normal;
  font-weight:100 900;
  font-display:swap;
  src:url("../fonts/Inter/Inter-VariableFont_opsz,wght.ttf") format("truetype-variations");
}

@font-face{
  font-family:"Inter";
  font-style:italic;
  font-weight:100 900;
  font-display:swap;
  src:url("../fonts/Inter/Inter-Italic-VariableFont_opsz,wght.ttf") format("truetype-variations");
}

/* ============================================================
   Basis
   ============================================================ */
*,*::before,*::after{box-sizing:border-box}

html{
  scroll-behavior:smooth;
  scroll-padding-top:calc(var(--header-h) + 12px);
  -webkit-text-size-adjust:100%;
  text-size-adjust:100%;
}

body{
  margin:0;
  font-family:"Inter",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  font-optical-sizing:auto;
  font-size:16px;
  line-height:1.75;
  color:var(--text-dark);
  background:var(--ink);
  -webkit-font-smoothing:antialiased;
}

img{max-width:100%;display:block}

.container{
  width:min(1120px,calc(100% - 48px));
  margin-inline:auto;
}

.skip-link{
  position:absolute;
  left:-9999px;
  top:0;
  z-index:100;
  padding:12px 18px;
  background:var(--accent);
  color:var(--ink);
  font-size:14px;
  text-decoration:none;
}
.skip-link:focus{left:12px;top:12px}

:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:3px;
}

/* Typo-Rollen */
.eyebrow{
  margin:0;
  font-size:11px;
  font-weight:500;
  letter-spacing:.38em;
  text-transform:uppercase;
  color:var(--muted-on-dark);
}

.display{
  margin:0 0 26px;
  font-size:clamp(30px,4vw,46px);
  font-weight:270;
  line-height:1.18;
  letter-spacing:.045em;
  text-transform:uppercase;
  color:var(--text-light);
}

.accent{color:var(--accent)}

/* Vertikale Sektions-Beschriftung (Leitsystem) */
.rail-label{
  position:absolute;
  top:112px;
  left:34px;
  writing-mode:vertical-rl;
  transform:rotate(180deg);
  font-size:10px;
  font-weight:550;
  letter-spacing:.34em;
  text-transform:uppercase;
  color:var(--muted-on-light);
  opacity:.75;
}
.rail-light{color:var(--muted-on-dark)}

@media (max-width:1260px){
  .rail-label{display:none}
}

/* ============================================================
   Header
   ============================================================ */
.site-header{
  position:sticky;
  top:0;
  z-index:50;
  background:rgba(20,18,16,.85);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line-on-dark);
}

.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  min-height:var(--header-h);
}

.brand{
  display:flex;
  align-items:center;
  text-decoration:none;
  color:var(--text-light);
}

.brand-logo{height:42px;width:auto;display:block}

.nav{display:flex;align-items:center;gap:34px}

.nav a{
  color:var(--text-light);
  text-decoration:none;
  font-size:11.5px;
  font-weight:520;
  letter-spacing:.22em;
  text-transform:uppercase;
  padding:6px 0;
  border-bottom:1px solid transparent;
  transition:border-color .2s ease,color .2s ease;
}
.nav a:hover{border-bottom-color:var(--accent)}

/* Rechtslinks in der Hauptnavigation: bewusst zurückgenommen */
.nav a.nav-legal{color:var(--muted-on-dark);font-size:10.5px}
.nav a.nav-legal:hover{color:var(--text-light)}

.lang-switch{
  font:inherit;
  font-size:11.5px;
  font-weight:520;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--muted-on-dark);
  background:transparent;
  border:1px solid var(--line-on-dark);
  padding:7px 12px;
  cursor:pointer;
  transition:color .2s ease,border-color .2s ease;
}
.lang-switch:hover{color:var(--text-light);border-color:var(--muted-on-dark)}

/* Mobile-Navigation */
.nav-toggle{
  display:none;
  flex-direction:column;
  justify-content:center;
  gap:7px;
  width:44px;
  height:44px;
  padding:10px;
  background:transparent;
  border:0;
  cursor:pointer;
}
.nav-toggle span{
  display:block;
  height:1.5px;
  width:100%;
  background:var(--text-light);
  transition:transform .25s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(4.25px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){transform:translateY(-4.25px) rotate(-45deg)}

@media (max-width:760px){
  .nav-toggle{display:flex}
  .nav{
    position:fixed;
    inset:var(--header-h) 0 auto 0;
    flex-direction:column;
    align-items:flex-start;
    gap:0;
    padding:10px 24px 28px;
    background:rgba(20,18,16,.97);
    border-bottom:1px solid var(--line-on-dark);
    display:none;
  }
  .nav.open{display:flex}
  .nav a{
    width:100%;
    padding:16px 0;
    font-size:13px;
    border-bottom:1px solid var(--line-on-dark);
  }
  .nav a:last-of-type{border-bottom:1px solid var(--line-on-dark)}
  .lang-switch{margin-top:18px}
}

/* ============================================================
   Hero
   ============================================================ */
.hero{
  position:relative;
  min-height:calc(100svh - var(--header-h));
  display:flex;
  align-items:center;
  overflow:hidden;
}

.hero-bg{
  position:absolute;
  inset:0;
  background-image:url("../images/hero.jpg");
  background-size:cover;
  /* Fokuspunkt auf der Flugzeugnase (leicht rechts der Mitte),
     damit sie bei jedem Seitenverhältnis im Bild bleibt */
  background-position:58% center;
}

.hero::before{
  content:"";
  position:absolute;
  inset:0;
  /* z-index nötig: sonst übermalt .hero-bg (späteres DOM-Element) den Verlauf */
  z-index:1;
  background:linear-gradient(90deg,rgba(20,18,16,.94) 0%,rgba(20,18,16,.68) 46%,rgba(20,18,16,.26) 100%);
}

/* Passermarken – Zitat aus der technischen Zeichnung */
.mark{
  position:absolute;
  width:18px;
  height:18px;
  opacity:.4;
  z-index:1;
}
.mark::before,.mark::after{
  content:"";
  position:absolute;
  background:var(--text-light);
}
.mark::before{left:50%;top:0;bottom:0;width:1px;transform:translateX(-50%)}
.mark::after{top:50%;left:0;right:0;height:1px;transform:translateY(-50%)}
.mark-1{top:18%;left:52%}
.mark-2{bottom:14%;left:8%}

.hero-content{
  position:relative;
  z-index:2;
  padding:96px 0;
  max-width:680px;
}

.hero-eyebrow{margin-bottom:30px}

.hero-title{
  margin:0 0 30px;
  font-size:clamp(34px,4.9vw,54px);
  font-weight:245;
  line-height:1.08;
  letter-spacing:.05em;
  text-transform:uppercase;
  color:var(--text-light);
}

.hero-lead{
  margin:0 0 42px;
  max-width:520px;
  font-size:16.5px;
  font-weight:380;
  color:var(--muted-on-dark);
}

/* Weicher Schattenwurf trennt die Schrift zusätzlich vom Foto */
.hero-eyebrow,.hero-title,.hero-lead{
  text-shadow:0 2px 22px rgba(12,10,9,.55);
}

.hero-actions{display:flex;gap:16px;flex-wrap:wrap}

/* Hero-Ladechoreografie */
@media (prefers-reduced-motion:no-preference){
  .hero-eyebrow,.hero-title,.hero-lead,.hero-actions{
    opacity:0;
    transform:translateY(16px);
    animation:rise .8s cubic-bezier(.22,.61,.36,1) forwards;
  }
  .hero-title{animation-delay:.12s}
  .hero-lead{animation-delay:.24s}
  .hero-actions{animation-delay:.36s}
}

@keyframes rise{
  to{opacity:1;transform:none}
}

/* ============================================================
   Buttons
   ============================================================ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:15px 28px;
  font-size:11.5px;
  font-weight:560;
  letter-spacing:.22em;
  text-transform:uppercase;
  text-decoration:none;
  cursor:pointer;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease;
}

.btn-primary{
  background:var(--text-light);
  color:var(--ink);
  border:1px solid var(--text-light);
}
.btn-primary:hover{background:var(--accent);border-color:var(--accent)}

.btn-ghost{
  background:transparent;
  color:var(--text-light);
  border:1px solid var(--line-on-dark);
}
.btn-ghost:hover{border-color:var(--muted-on-dark)}

/* ============================================================
   Sektionen
   ============================================================ */
.section{position:relative;padding:110px 0}

.section-light{background:var(--paper);color:var(--text-dark)}
.section-dark{background:var(--ink);color:var(--text-light)}

/* Leistungen ------------------------------------------------
   Vier Bereiche nebeneinander, durch Haarlinien getrennt; die
   Punkte laufen in jeder Spalte nach unten. Fachkürzel
   (OPS/CAMO/TRG/S&C) als konturierter Blickfang je Spalte. */
.service-rows{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
}

.service{padding:0 30px}
.service + .service{border-left:1px solid var(--line-on-light)}
.service:first-child{padding-left:0}
.service:last-child{padding-right:0}

.service-head{
  display:flex;
  align-items:center;
  gap:12px;
  margin-bottom:20px;
  padding-bottom:14px;
  border-bottom:1px solid var(--line-on-light);
}

.service-icon{
  width:22px;
  height:22px;
  flex:none;
  color:var(--text-dark);
}

.service h2{
  margin:0;
  font-size:15px;
  font-weight:620;
  letter-spacing:.12em;
  line-height:1.5;
  text-transform:uppercase;
}

.service-list{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  /* minmax(0,…): sonst weitet das längste Kompositum die Spalte
     über die Trennlinie hinaus (min-content-Blowout) */
  grid-template-columns:minmax(0,1fr);
  gap:11px;
}

.service-list li{
  position:relative;
  padding-left:18px;
  font-size:14px;
  line-height:1.65;
  color:var(--muted-on-light);
  /* Lange deutsche Komposita sauber trennen statt in die
     Nachbarspalte zu laufen */
  hyphens:auto;
  overflow-wrap:break-word;
}

.service-list li::before{
  content:"";
  position:absolute;
  left:0;
  top:.68em;
  width:9px;
  height:1.5px;
  background:var(--accent);
}

@media (max-width:1180px){
  .service-rows{grid-template-columns:1fr 1fr;row-gap:60px}
  .service{padding:0 30px}
  .service:nth-child(odd){padding-left:0;border-left:0}
  .service:nth-child(even){padding-right:0}
}

@media (max-width:700px){
  .service-rows{grid-template-columns:1fr;row-gap:0}
  .service{padding:26px 0;border-left:0}
  /* Mobil bewusst keine Trennlinien zwischen den Blöcken */
  .service + .service{border-left:0}
  .service:first-child{padding-top:0}
  .service:last-child{padding-bottom:0}
  .service-head{margin-bottom:18px}
}

/* Über mich ------------------------------------------------- */
.about{padding:0}

.about-grid{
  display:grid;
  grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);
  align-items:stretch;
}

.about-text{
  padding:110px 64px 110px max(24px,calc((100vw - 1120px)/2));
}

.about-text > p{
  max-width:520px;
  color:var(--muted-on-dark);
  margin:0 0 22px;
  font-size:15.5px;
}

.about-person{
  display:flex;
  align-items:center;
  gap:16px;
  /* Steht direkt unter der Überschrift, vor dem Text */
  margin:0 0 34px;
  max-width:520px;
}

.about-person img{
  width:56px;
  height:56px;
  border-radius:50%;
  object-fit:cover;
  filter:grayscale(1);
}

.about-person figcaption{display:flex;flex-direction:column;gap:2px}
.about-person strong{font-size:14px;font-weight:600;letter-spacing:.06em}
.about-person span{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted-on-dark)}

.about-media{position:relative;min-height:420px}

.about-media img{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:cover;
  filter:grayscale(1) contrast(1.02);
}

.about-media::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(90deg,var(--ink) 0%,rgba(20,18,16,0) 34%);
}

@media (max-width:880px){
  .about-grid{grid-template-columns:1fr}
  .about-text{padding:88px 24px 88px}
  /* Mobil ohne Stimmungsbild – der Text steht für sich */
  .about-media{display:none}
}

/* Arbeitsweise ---------------------------------------------- */
.principle-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
}

.principle{padding:8px 34px}
.principle + .principle{border-left:1px solid var(--line-on-light)}
.principle:first-child{padding-left:0}

.principle h2{
  margin:0 0 12px;
  font-size:13px;
  font-weight:620;
  letter-spacing:.14em;
  text-transform:uppercase;
}

.principle p{
  margin:0;
  font-size:14px;
  line-height:1.7;
  color:var(--muted-on-light);
}

@media (max-width:760px){
  .principle-grid{grid-template-columns:1fr}
  .principle{padding:28px 0;border-left:0}
  .principle + .principle{border-left:0;border-top:1px solid var(--line-on-light)}
  .principle:first-child{padding-top:0}
  .principle:last-child{padding-bottom:0}
}

/* Kontakt ---------------------------------------------------- */
.contact-intro > p{
  max-width:440px;
  color:var(--muted-on-dark);
  margin:0 0 36px;
  font-size:15.5px;
}

.contact-list{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  gap:14px;
}

.contact-list li{
  display:flex;
  align-items:center;
  gap:16px;
  font-size:15px;
}

.contact-list svg{
  width:20px;
  height:20px;
  flex:none;
  color:var(--muted-on-dark);
}

.contact-list a{
  color:var(--text-light);
  text-decoration:none;
  border-bottom:1px solid var(--line-on-dark);
  transition:border-color .2s ease;
}
.contact-list a:hover{border-bottom-color:var(--accent)}

.flightpath{
  width:min(320px,80%);
  margin-top:52px;
  color:var(--muted-on-dark);
  opacity:.55;
}

/* ============================================================
   Footer
   ============================================================ */
.site-footer{
  background:var(--ink);
  border-top:1px solid var(--line-on-dark);
  color:var(--muted-on-dark);
}

.footer-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding:30px 0;
  font-size:12.5px;
  letter-spacing:.04em;
}

.footer-inner p{margin:0}

.footer-logo{height:30px;width:auto;opacity:.9}

.footer-links{display:flex;gap:26px}

.footer-links a{
  color:var(--muted-on-dark);
  text-decoration:none;
  font-size:11px;
  font-weight:520;
  letter-spacing:.2em;
  text-transform:uppercase;
  transition:color .2s ease;
}
.footer-links a:hover{color:var(--text-light)}

/* ============================================================
   Rechtsseiten (Impressum / Datenschutz)
   ============================================================ */
.legal{padding:96px 0 110px}

.legal .container{max-width:760px}

.legal h1{
  margin:0 0 10px;
  font-size:clamp(28px,4vw,40px);
  font-weight:270;
  letter-spacing:.05em;
  text-transform:uppercase;
  color:var(--text-light);
}

.legal .legal-updated{
  margin:0 0 54px;
  font-size:12px;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--muted-on-dark);
}

.legal h2{
  margin:44px 0 14px;
  font-size:13.5px;
  font-weight:620;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--text-light);
}

.legal p,.legal ul{
  margin:0 0 16px;
  font-size:15px;
  line-height:1.8;
  color:var(--muted-on-dark);
}

.legal ul{padding-left:20px}

.legal a{color:var(--text-light);text-decoration:underline;text-underline-offset:3px}

.legal .placeholder{
  color:var(--accent);
}

/* Hinweis auf Serviceübersetzung – nur in der englischen Ansicht sichtbar */
.lang-en-only{display:none}
html[lang="en"] .lang-en-only{display:block}

.legal .legal-note{
  margin:-30px 0 44px;
  padding:14px 18px;
  border-left:2px solid var(--accent);
  font-size:13.5px;
  font-style:italic;
  color:var(--muted-on-dark);
}

/* ============================================================
   Scroll-Reveal
   ============================================================ */
@media (prefers-reduced-motion:no-preference){
  .reveal{
    opacity:0;
    transform:translateY(18px);
    transition:opacity .7s ease,transform .7s cubic-bezier(.22,.61,.36,1);
  }
  .reveal.in{opacity:1;transform:none}
}

/* ============================================================
   Mobile Optimierung
   ============================================================ */
.display,.hero-title{text-wrap:balance}

@media (max-width:760px){
  :root{--header-h:64px}

  .brand-logo{height:36px}

  /* Kompaktere Sektionsabstände auf kleinen Screens */
  .section{padding:72px 0}
  .about{padding:0}
  .legal{padding:64px 0 88px}

  /* Hero: weniger Innenabstand, kräftigeres Overlay für Lesbarkeit */
  .hero-content{padding:72px 0}
  .hero-eyebrow{margin-bottom:22px}
  .hero-title{margin-bottom:24px}
  .hero-lead{margin-bottom:34px}
  .hero-bg{background-position:60% center}
  .hero::before{
    background:linear-gradient(90deg,rgba(20,18,16,.95) 0%,rgba(20,18,16,.8) 55%,rgba(20,18,16,.45) 100%);
  }
  .mark{display:none}

  .display{margin-bottom:22px}
  .flightpath{margin-top:36px}

  /* Footer gestapelt, Links mit größerer Tap-Fläche */
  .footer-inner{flex-direction:column;align-items:flex-start;gap:12px;padding:26px 0}
  .footer-links{gap:22px}
  .footer-links a{padding:8px 0}
  .footer-logo{height:26px}
}

@media (max-width:480px){
  /* Sehr schmale Screens: CTAs untereinander, volle Breite */
  .hero-actions{flex-direction:column;align-items:stretch}
}

@media print{
  .site-header,.site-footer,.nav-toggle{display:none}
}