/* ===== VARIANT C: Minimalist Engineering ===== */
@import url('https://fonts.googleapis.com/css2?family=Lora:ital,wght@0,400;0,600;1,400&family=Mulish:wght@300;400;600&display=swap');

:root {
  --paper:   #faf8f5;
  --white:   #ffffff;
  --ink:     #1c1c1a;
  --ink-2:   #4a4a46;
  --ink-3:   #8a8a84;
  --rule:    #d8d5ce;
  --accent:  #6783ca;
  --accent2: #e05010;
  --font-serif: 'Lora', Georgia, serif;
  --font-sans:  'Mulish', sans-serif;
  --max: 1080px;
  --pad: 2rem;
}

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

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

/* HEADER */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: var(--white);
  border-bottom: 2px solid var(--ink);
}
.site-header .wrap {
  display: flex; align-items: center; justify-content: space-between;
  height: 60px;
}
.logo {
  font-family: var(--font-serif);
  font-size: 1.2rem; font-weight: 600;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: -0.01em;
}
.logo span { font-weight: 400; color: var(--ink-2); }

nav { display: flex; gap: 0; }
nav a {
  font-family: var(--font-sans);
  font-size: 0.82rem; font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--ink-2);
  text-decoration: none;
  padding: 0.4rem 0.9rem;
  border-bottom: 2px solid transparent;
  transition: color 0.15s, border-color 0.15s;
}
nav a:hover { color: var(--accent); border-bottom-color: var(--accent); }
nav a.active { color: var(--ink); font-weight: 600; border-bottom-color: var(--ink); }

.nav-toggle {
  display: none; background: none; border: none;
  font-size: 1.3rem; cursor: pointer; color: var(--ink);
}

/* HERO */
.hero {
  padding: 7rem var(--pad) 5rem;
  border-bottom: 1px solid var(--rule);
}
.hero-kicker {
  font-size: 0.75rem; font-weight: 300;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--ink-3); margin-bottom: 2rem;
}
h1 {
  font-family: var(--font-serif);
  font-size: clamp(3.2rem, 7vw, 6rem);
  font-weight: 400; line-height: 1.08;
  color: var(--ink);
  letter-spacing: -0.03em;
  margin-bottom: 0;
}
h1 em {
  font-style: italic;
  color: var(--accent);
}
.hero-body {
  margin-top: 2.5rem;
  max-width: 520px;
}
.hero-body p {
  font-size: 1rem; color: var(--ink-2);
  margin-bottom: 2rem; font-weight: 300;
}
.hero-links { display: flex; align-items: center; gap: 2rem; }
.link-arrow {
  font-size: 0.9rem; font-weight: 600;
  color: var(--accent); text-decoration: none;
  border-bottom: 1px solid var(--accent);
  padding-bottom: 1px;
  transition: color 0.15s, border-color 0.15s;
}
.link-arrow:hover { color: var(--accent2); border-color: var(--accent2); }
.link-plain {
  font-size: 0.9rem; color: var(--ink-3); text-decoration: none;
  transition: color 0.15s;
}
.link-plain:hover { color: var(--ink); }

.hero-rule {
  width: 100%; height: 1px;
  background: var(--rule);
  margin: 4rem 0 2.5rem;
}
.hero-facts {
  display: flex; flex-wrap: wrap; gap: 0;
}
.fact {
  flex: 1 1 160px;
  padding: 1.2rem 2rem 1.2rem 0;
  border-right: 1px solid var(--rule);
}
.fact:last-child { border-right: none; }
.fact span {
  display: block;
  font-size: 0.72rem; font-weight: 300;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--ink-3); margin-bottom: 0.3rem;
}
.fact strong {
  font-family: var(--font-serif); font-size: 1.15rem;
  font-weight: 400; color: var(--ink);
}

/* SERVICES */
.services-section {
  padding: 6rem var(--pad);
  border-bottom: 1px solid var(--rule);
}
.section-title {
  font-family: var(--font-serif);
  font-size: 0.8rem; font-weight: 400;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 3rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--rule);
}
.service-list { display: flex; flex-direction: column; }
.service-row {
  display: grid;
  grid-template-columns: 60px 1fr;
  gap: 2rem;
  padding: 2rem 0;
  border-bottom: 1px solid var(--rule);
  transition: background 0.15s;
}
.service-row:last-child { border-bottom: none; }
.service-row:hover { background: rgba(0,0,0,0.015); }
.service-num {
  font-family: var(--font-serif); font-size: 0.85rem;
  color: var(--accent); font-style: italic;
  padding-top: 3px;
}
.service-detail h3 {
  font-family: var(--font-serif); font-size: 1.15rem;
  font-weight: 600; color: var(--ink);
  margin-bottom: 0.5rem;
}
.service-detail p { font-size: 0.92rem; color: var(--ink-2); font-weight: 300; }

/* INTRO / ABOUT */
.intro-section {
  padding: 6rem var(--pad);
  border-bottom: 1px solid var(--rule);
}
.intro-split {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 4rem;
  align-items: start;
}
.intro-left h2 {
  font-family: var(--font-serif); font-size: 0.8rem;
  font-weight: 400; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--ink-3);
  position: sticky; top: 80px;
}
.lead {
  font-family: var(--font-serif);
  font-size: 1.2rem; font-weight: 400;
  line-height: 1.65; color: var(--ink);
  margin-bottom: 1.2rem;
}
.intro-right p { font-size: 0.95rem; color: var(--ink-2); font-weight: 300; margin-bottom: 1.5rem; }

/* HERO IMAGE */
.hero-image-section {
  padding: 0 var(--pad) 4rem;
  border-bottom: 1px solid var(--rule);
}
.hero-figure { margin: 0; }
.hero-img {
  display: block;
  width: 100%;
  max-height: 480px;
  object-fit: cover;
  object-position: center;
  border: 1px solid var(--rule);
  filter: grayscale(15%);
  transition: filter 0.4s;
}
.hero-img:hover { filter: grayscale(0%); }
.hero-figure figcaption {
  margin-top: 0.6rem;
  font-size: 0.75rem;
  color: var(--ink-3);
  font-style: italic;
  letter-spacing: 0.03em;
}
/* Fallback wenn Bild nicht erreichbar */
.hero-figure.img-error::after {
  content: 'Bild nicht verfügbar — bitte slide-image-1.jpg in /img/ ablegen';
  display: block;
  padding: 3rem 2rem;
  background: var(--rule);
  color: var(--ink-3);
  font-size: 0.82rem;
  font-style: italic;
  text-align: center;
  border: 1px dashed var(--ink-3);
}
.hero-figure.img-error img { display: none; }

/* DOWNLOAD PREREQUISITES */
.dl-prereq {
  font-size: 0.88rem;
  color: var(--ink-2);
  font-weight: 300;
  border-left: 3px solid var(--accent);
  padding: 0.6rem 1rem;
  margin-bottom: 2rem;
  background: rgba(179,64,0,0.04);
}

/* CONTACT */
.contact-section { padding: 6rem var(--pad); }
.contact-table { border-top: 2px solid var(--ink); margin-top: 1.5rem; }
.ct-row {
  display: grid; grid-template-columns: 160px 1fr;
  gap: 2rem; align-items: baseline;
  padding: 1rem 0;
  border-bottom: 1px solid var(--rule);
  font-size: 0.93rem;
}
.ct-label {
  font-size: 0.72rem; font-weight: 600;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--ink-3);
}
.ct-row a { color: var(--accent); text-decoration: none; }
.ct-row a:hover { text-decoration: underline; }

/* FOOTER */
.site-footer {
  background: var(--ink);
  padding: 2rem var(--pad);
}
.footer-inner {
  display: flex; flex-wrap: wrap;
  gap: 1rem; align-items: center; justify-content: space-between;
  font-size: 0.78rem; color: rgba(255,255,255,0.4);
}
.footer-inner a {
  color: rgba(255,255,255,0.6); text-decoration: none;
  transition: color 0.15s;
}
.footer-inner a:hover { color: white; }

/* ANIMATIONS */
@keyframes fadeUp { from { opacity:0; transform:translateY(20px); } to { opacity:1; transform:none; } }
.hero { animation: fadeUp 0.7s ease both; }

/* RESPONSIVE */
@media (max-width: 700px) {
  h1 { font-size: 2.8rem; }
  .intro-split { grid-template-columns: 1fr; gap: 1.5rem; }
  .intro-left h2 { position: static; margin-bottom: 0; }
  .ct-row { grid-template-columns: 1fr; gap: 0.2rem; padding: 0.85rem 0; }
  .fact { flex-basis: 48%; }
  .nav-toggle { display: block; }
  nav {
    display: none; position: absolute;
    top: 60px; left: 0; right: 0;
    background: var(--white);
    border-bottom: 2px solid var(--ink);
    flex-direction: column; padding: 0.5rem 1rem;
  }
  nav.open { display: flex; }
  nav a { border-bottom: 1px solid var(--rule); padding: 0.75rem 0; }
  nav a.active { border-bottom-color: var(--rule); }
}