/* carstenneufing.com — reduzierte Unternehmenspräsenz
   Farben: helles Weiß, Anthrazit, tiefes Blau. Keine externen Ressourcen. */

:root {
  --bg: #fdfdfc;
  --bg-alt: #f4f5f6;
  --ink: #20272f;
  --ink-soft: #59636e;
  --accent: #1d3a5f;
  --hairline: #e3e6e9;
  --max: 60rem;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.65;
  font-size: 1.0625rem;
  -webkit-font-smoothing: antialiased;
}

/* Sprachumschaltung: html[data-lang] blendet die jeweils andere Sprache aus */
html[data-lang="de"] [lang="en"] { display: none; }
html[data-lang="en"] [lang="de"] { display: none; }

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ---------- Header ---------- */

header {
  position: sticky;
  top: 0;
  background: rgba(253, 253, 252, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--hairline);
  z-index: 10;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.5rem;
  max-width: var(--max);
  margin: 0 auto;
}

.wordmark {
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--ink);
  text-decoration: none;
  font-size: 1.05rem;
}

nav { display: flex; align-items: center; gap: 1.5rem; }

nav a {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 0.92rem;
}

nav a:hover { color: var(--accent); }

.lang-switch {
  border: 1px solid var(--hairline);
  border-radius: 999px;
  display: inline-flex;
  overflow: hidden;
}

.lang-switch button {
  border: 0;
  background: transparent;
  font: inherit;
  font-size: 0.8rem;
  padding: 0.25rem 0.7rem;
  cursor: pointer;
  color: var(--ink-soft);
}

.lang-switch button[aria-pressed="true"] {
  background: var(--accent);
  color: #fff;
}

/* ---------- Abschnitte ---------- */

section { padding: 5.5rem 0; }

section + section { border-top: 1px solid var(--hairline); }

.kicker {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 1.2rem;
}

h1, h2, h3 { font-weight: 600; line-height: 1.25; }

h2 { font-size: 1.7rem; margin-bottom: 1.4rem; }

/* Hero */

.hero { padding: 7.5rem 0 6.5rem; }

.hero h1 {
  font-size: clamp(2.4rem, 6vw, 3.6rem);
  letter-spacing: -0.01em;
}

.hero .tagline {
  font-size: clamp(1.1rem, 2.6vw, 1.4rem);
  color: var(--accent);
  margin: 0.8rem 0 1.8rem;
  font-weight: 500;
}

.hero p.lead {
  max-width: 38rem;
  color: var(--ink-soft);
  margin-bottom: 2.4rem;
}

.btn {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  padding: 0.7rem 1.6rem;
  border-radius: 4px;
  font-size: 0.95rem;
  letter-spacing: 0.01em;
}

.btn:hover { background: #16304f; }

/* Über */

.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  align-items: start;
}

.about-grid.with-portrait { grid-template-columns: 1fr 16rem; }

.portrait {
  width: 100%;
  border-radius: 6px;
  filter: grayscale(15%);
}

.credentials {
  margin-top: 1.6rem;
  color: var(--ink-soft);
  font-size: 0.95rem;
  letter-spacing: 0.04em;
}

.credentials .note { display: block; font-size: 0.82rem; margin-top: 0.3rem; letter-spacing: 0; }

/* Geschäftsfelder */

.fields { background: var(--bg-alt); }

.field-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-top: 2.5rem;
}

.field {
  background: var(--bg);
  border: 1px solid var(--hairline);
  border-radius: 6px;
  padding: 1.8rem 1.6rem;
}

.field .num {
  font-size: 0.8rem;
  color: var(--accent);
  font-weight: 600;
  letter-spacing: 0.1em;
}

.field h3 { font-size: 1.08rem; margin: 0.6rem 0 0.7rem; }

.field p { font-size: 0.94rem; color: var(--ink-soft); }

/* Kontakt */

.contact-block {
  border: 1px solid var(--hairline);
  border-radius: 6px;
  padding: 2rem;
  margin-top: 1rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.contact-block h3 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--ink-soft);
  margin-bottom: 0.6rem;
}

.contact-block a { color: var(--accent); text-decoration: none; }
.contact-block a:hover { text-decoration: underline; }

address { font-style: normal; }

/* ---------- Footer ---------- */

footer {
  border-top: 1px solid var(--hairline);
  padding: 2rem 0 2.5rem;
  color: var(--ink-soft);
  font-size: 0.88rem;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  justify-content: space-between;
  align-items: center;
}

footer a { color: var(--ink-soft); text-decoration: none; margin-right: 1.2rem; }
footer a:hover { color: var(--accent); }

/* ---------- Unterseiten (Impressum / Datenschutz) ---------- */

.legal { padding: 4rem 0 5rem; max-width: 44rem; }
.legal h1 { font-size: 2rem; margin-bottom: 2rem; }
.legal h2 { font-size: 1.15rem; margin: 2.2rem 0 0.7rem; }
.legal p, .legal address { color: var(--ink-soft); margin-bottom: 0.8rem; }
.legal a { color: var(--accent); }

/* ---------- Responsiv ---------- */

@media (max-width: 800px) {
  section { padding: 4rem 0; }
  .hero { padding: 5.5rem 0 4.5rem; }
  .field-grid { grid-template-columns: 1fr; }
  .about-grid.with-portrait { grid-template-columns: 1fr; }
  .contact-block { grid-template-columns: 1fr; }
  nav a.nav-link { display: none; }
}