/* ==========================================================
   SYLTWERK — style.css
   Farbwelt und Typografie folgen der Visitenkarte:
   Anthrazit / Off-White / Graublau, Inter (Variable Font)
   ========================================================== */

@font-face {
  font-family: 'Inter';
  src: url('../assets/fonts/InterVariable.woff2') format('woff2');
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

:root {
  --dark: #191C1F;
  --dark-2: #1F2327;
  --paper: #FAF8F5;
  --sand: #F1EEE9;
  --ink: #1C1F22;
  --body: #4B4F53;
  --muted: #8A8F94;
  --muted-dark: #AEB4B9;
  --faint: #6F767C;
  --accent: #9AA5AC;
  --hairline: #DFDAD2;
  --hairline-dark: #2E3338;
}

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

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--paper);
  color: var(--ink);
  font-size: 17px;
  line-height: 1.7;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
a:focus-visible { outline: 1px solid var(--accent); outline-offset: 4px; }
::selection { background: var(--accent); color: var(--dark); }

/* ---------- Grundbausteine ---------- */

.wrap { max-width: 1040px; margin: 0 auto; padding: 0 24px; }

.eyebrow {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .28em;
  text-transform: uppercase;
  color: var(--muted);
}

.rule { width: 56px; height: 1px; background: var(--accent); border: 0; }

section { padding: 110px 0; }

.section-head { margin-bottom: 64px; }
.section-head .rule { margin: 20px 0; }
.section-head h2 { font-size: clamp(24px, 3vw, 32px); font-weight: 500; letter-spacing: -.01em; }
.section-head p { max-width: 560px; color: var(--muted); margin-top: 14px; }

/* ---------- Navigation ---------- */

header { position: absolute; top: 0; left: 0; right: 0; z-index: 10; }

.nav { display: flex; justify-content: space-between; align-items: center; padding: 28px 0; }
.nav .mark { font-size: 13px; font-weight: 500; letter-spacing: .32em; color: var(--paper); }
.nav nav { display: flex; gap: 32px; }
.nav nav a { font-size: 13px; letter-spacing: .06em; color: var(--muted-dark); transition: color .25s; }
.nav nav a:hover,
.nav nav a:focus-visible { color: var(--paper); }

@media (max-width: 700px) {
  .nav nav { gap: 18px; }
  .nav nav a:nth-child(4) { display: none; }
}

/* ---------- Hero ---------- */

.hero { background: var(--dark); color: var(--paper); min-height: 88vh; display: flex; align-items: center; text-align: center; }
.hero .inner { width: 100%; padding: 140px 24px 110px; }
.hero h1 { font-size: clamp(30px, 5.4vw, 52px); font-weight: 600; letter-spacing: .34em; margin-left: .34em; }
.hero .rule { margin: 26px auto; }
.hero .claim { font-size: clamp(12px, 1.6vw, 14px); font-weight: 300; letter-spacing: .24em; color: var(--muted-dark); }
.hero p.sub { max-width: 520px; margin: 36px auto 0; font-size: 17px; font-weight: 300; color: #C7CBCE; }
.hero .cta { margin-top: 44px; display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

.btn {
  display: inline-block;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: .14em;
  text-transform: uppercase;
  padding: 14px 34px;
  border: 1px solid var(--accent);
  color: var(--paper);
  transition: background .25s, color .25s, border-color .25s;
}
.btn:hover,
.btn:focus-visible { background: var(--paper); color: var(--dark); border-color: var(--paper); }
.btn.quiet { border-color: transparent; color: var(--muted-dark); }
.btn.quiet:hover,
.btn.quiet:focus-visible { background: transparent; color: var(--paper); border-color: transparent; }

/* ---------- Leistungen ---------- */

.service { display: grid; grid-template-columns: 280px 1fr; gap: 32px; padding: 44px 0; border-top: 1px solid var(--hairline); }
.service:last-of-type { border-bottom: 1px solid var(--hairline); }
.service h3 { font-size: 19px; font-weight: 500; letter-spacing: -.005em; }
.service .tagline { font-size: 13px; color: var(--muted); margin-top: 6px; letter-spacing: .04em; }
.service p { color: var(--body); max-width: 600px; }
.service ul { list-style: none; margin-top: 14px; display: flex; flex-wrap: wrap; gap: 8px 10px; }
.service li {
  font-size: 13px;
  letter-spacing: .03em;
  color: var(--faint);
  border: 1px solid var(--hairline);
  padding: 5px 13px;
  border-radius: 2px;
  background: #fff;
}

@media (max-width: 760px) {
  .service { grid-template-columns: 1fr; gap: 14px; padding: 36px 0; }
}

/* ---------- Projekte ---------- */

.projekte { background: var(--dark); color: var(--paper); }
.projekte .section-head h2 { color: var(--paper); }
.projekte .section-head p { color: var(--muted-dark); }
.projekte .eyebrow { color: var(--faint); }

.projekt { display: grid; grid-template-columns: 280px 1fr; gap: 32px; padding: 44px 0; border-top: 1px solid var(--hairline-dark); }
.projekt:last-of-type { border-bottom: 1px solid var(--hairline-dark); }
.projekt .meta .kind { font-size: 12px; font-weight: 500; letter-spacing: .22em; text-transform: uppercase; color: var(--accent); }
.projekt .meta h3 { font-size: 19px; font-weight: 500; margin-top: 8px; color: var(--paper); }
.projekt .body p { color: #C7CBCE; max-width: 600px; font-weight: 300; }
.projekt .body .ergebnis { margin-top: 12px; font-size: 14.5px; color: var(--muted-dark); }
.projekt .body .ergebnis strong { font-weight: 500; color: var(--paper); }

@media (max-width: 760px) {
  .projekt { grid-template-columns: 1fr; gap: 12px; padding: 36px 0; }
}

/* ---------- IT-Betreuung ---------- */

.betreuung { background: var(--sand); }

.tiers { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--hairline); border: 1px solid var(--hairline); }
.tier { background: var(--paper); padding: 40px 32px; display: flex; flex-direction: column; }
.tier .name { font-size: 12px; font-weight: 500; letter-spacing: .26em; text-transform: uppercase; color: var(--muted); }
.tier .for { font-size: 15px; font-weight: 500; margin: 16px 0 4px; }
.tier ul { list-style: none; margin-top: 18px; flex: 1; }
.tier li { font-size: 14.5px; color: var(--body); padding: 9px 0; border-top: 1px solid var(--hairline); }
.tier li:first-child { border-top: 0; }
.tier .price { margin-top: 26px; font-size: 13px; letter-spacing: .1em; text-transform: uppercase; color: var(--faint); }

.betreuung .note { margin-top: 36px; font-size: 14px; color: var(--muted); max-width: 640px; }

@media (max-width: 820px) {
  .tiers { grid-template-columns: 1fr; }
}

/* ---------- Arbeitsweise ---------- */

.arbeitsweise .grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 56px; }
.arbeitsweise .grid .rule { margin: 0 0 22px; }
.arbeitsweise h3 { font-size: 16px; font-weight: 500; margin-bottom: 10px; }
.arbeitsweise p { font-size: 15px; color: var(--body); }

@media (max-width: 760px) {
  .arbeitsweise .grid { grid-template-columns: 1fr; gap: 36px; }
}

/* ---------- Kontakt ---------- */

.kontakt { background: var(--dark); color: var(--paper); text-align: center; padding: 130px 0 60px; }
.kontakt .eyebrow { color: var(--faint); }
.kontakt .name { font-size: clamp(18px, 2.6vw, 24px); font-weight: 500; letter-spacing: .24em; margin-top: 26px; margin-left: .24em; }
.kontakt .rule { margin: 24px auto; }
.kontakt .lines { font-weight: 300; color: var(--muted-dark); font-size: 17px; line-height: 2.1; }
.kontakt .lines a { transition: color .25s; }
.kontakt .lines a:hover,
.kontakt .lines a:focus-visible { color: var(--paper); }
.kontakt .cta { margin-top: 40px; display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

footer {
  margin-top: 90px;
  padding-top: 28px;
  border-top: 1px solid var(--hairline-dark);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
footer, .legal { font-size: 12px; letter-spacing: .18em; text-transform: uppercase; color: var(--faint); }
.legal { display: flex; gap: 26px; }
.legal a:hover,
.legal a:focus-visible { color: var(--muted-dark); }

/* ---------- Scroll-Reveal ---------- */

.reveal { opacity: 0; transform: translateY(14px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}