/* TASKWERK GmbH – Website
   Farben laut CD: Nachtblau #003154, Türkis #3FB498, Grau #C6C6C6, Hellgrau #F2F5F7
   Schrift: Open Sans (lokal einbinden, siehe fonts/LIESMICH.txt) */

@font-face { font-family: "Open Sans"; font-weight: 300; font-style: normal; font-display: swap;
  src: local("Open Sans Light"), local("OpenSans-Light"), url("fonts/open-sans-300.woff2") format("woff2"); }
@font-face { font-family: "Open Sans"; font-weight: 400; font-style: normal; font-display: swap;
  src: local("Open Sans"), local("OpenSans-Regular"), url("fonts/open-sans-400.woff2") format("woff2"); }
@font-face { font-family: "Open Sans"; font-weight: 600; font-style: normal; font-display: swap;
  src: local("Open Sans SemiBold"), local("OpenSans-SemiBold"), url("fonts/open-sans-600.woff2") format("woff2"); }
@font-face { font-family: "Open Sans"; font-weight: 700; font-style: normal; font-display: swap;
  src: local("Open Sans Bold"), local("OpenSans-Bold"), url("fonts/open-sans-700.woff2") format("woff2"); }

:root {
  --blau: #003154;
  --tuerkis: #3FB498;
  --grau: #C6C6C6;
  --hell: #F2F5F7;
  --text: #1c2a35;
  --text-2: #5b6b78;
  --weiss: #ffffff;
  --radius: 4px;
  --max: 1120px;
  --gutter: 20px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 104px; }
body {
  margin: 0;
  font-family: "Open Sans", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  font-weight: 400;
  font-size: 17px;
  line-height: 1.65;
  color: var(--text);
  background: var(--weiss);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--blau); text-underline-offset: 3px; }
a:hover { color: #00507f; }
:focus-visible { outline: 3px solid var(--tuerkis); outline-offset: 3px; }

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

/* ---------- Kopfbereich ---------- */
.site-header {
  position: sticky; top: 0; z-index: 20;
  background: var(--weiss);
  border-bottom: 2px solid var(--blau);
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; min-height: 84px; gap: 16px; }
.brand { display: block; line-height: 0; padding: 10px 0; }
.brand img { height: 62px; width: auto; }
.nav-toggle { display: none; }
.nav-burger {
  display: none; cursor: pointer; padding: 10px; margin-right: -10px;
  font-weight: 600; color: var(--blau); font-size: 15px; letter-spacing: .04em;
}
.nav { display: flex; gap: 28px; align-items: center; }
.nav a { text-decoration: none; font-weight: 600; font-size: 15px; color: var(--blau); padding: 6px 0; border-bottom: 2px solid transparent; }
.nav a:hover { border-bottom-color: var(--tuerkis); }
.nav a.btn-nav {
  background: var(--blau); color: var(--weiss); padding: 10px 18px; border-radius: var(--radius); border-bottom: 0;
}
.nav a.btn-nav:hover { background: #00507f; }

/* ---------- Hero ---------- */
.hero { background: var(--hell); border-bottom: 1px solid var(--grau); }
.hero .wrap { display: grid; gap: 40px; padding-top: 64px; padding-bottom: 72px; align-items: center; }
.eyebrow { color: var(--tuerkis); font-weight: 700; letter-spacing: .12em; text-transform: uppercase; font-size: 13px; margin: 0 0 14px; }
h1, h2, h3 { color: var(--blau); line-height: 1.2; margin: 0 0 .5em; font-weight: 700; }
h1 { font-size: clamp(30px, 5.4vw, 52px); letter-spacing: -.01em; }
h2 { font-size: clamp(25px, 3.6vw, 36px); letter-spacing: -.005em; }
h3 { font-size: 19px; font-weight: 600; }
.lead { font-size: clamp(18px, 2.2vw, 21px); font-weight: 300; color: var(--text); max-width: 60ch; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.btn {
  display: inline-block; text-decoration: none; font-weight: 600; font-size: 16px;
  padding: 14px 24px; border-radius: var(--radius); border: 2px solid var(--blau);
}
.btn-primary { background: var(--blau); color: var(--weiss); }
.btn-primary:hover { background: #00507f; border-color: #00507f; color: var(--weiss); }
.btn-ghost { background: transparent; color: var(--blau); }
.btn-ghost:hover { background: var(--blau); color: var(--weiss); }

.hero-facts { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--grau); border: 1px solid var(--grau); }
.fact { background: var(--weiss); padding: 22px 18px; }
.fact strong { display: block; font-size: 28px; line-height: 1.1; color: var(--blau); font-weight: 700; white-space: nowrap; }
.fact span { display: block; margin-top: 6px; font-size: 14px; color: var(--text-2); line-height: 1.4; }

/* ---------- Abschnitte ---------- */
section { padding: 72px 0; }
section.tint { background: var(--hell); }
.section-head { max-width: 68ch; margin-bottom: 40px; }
.section-head p { color: var(--text-2); margin: 0; }
.rule { width: 56px; height: 4px; background: var(--tuerkis); border: 0; margin: 0 0 18px; }

/* KI-Abschnitt */
.ki-grid { display: grid; gap: 28px; }
.ki-item { border-top: 4px solid var(--tuerkis); padding-top: 18px; }
.ki-item h3 { font-size: 22px; }
.ki-item p { margin: 0; color: var(--text); }
@media (min-width: 760px) { .ki-grid { grid-template-columns: repeat(3, 1fr); gap: 40px; } }

/* Standbeine */
.pillars { display: grid; gap: 24px; }
.pillar { border: 1px solid var(--grau); border-top: 4px solid var(--blau); padding: 28px 24px; background: var(--weiss); }
.pillar h3 { font-size: 22px; }
.pillar ul { padding-left: 1.1em; margin: 14px 0 0; }
.pillar li { margin: 6px 0; }
.pillar li::marker { color: var(--tuerkis); }

/* Leistungsbausteine */
.blocks { display: grid; gap: 1px; background: var(--grau); border: 1px solid var(--grau); }
.block { background: var(--weiss); padding: 26px 24px; }
.block .no { color: var(--tuerkis); font-weight: 700; font-size: 14px; letter-spacing: .1em; }
.block h3 { margin: 4px 0 8px; }
.block p { margin: 0 0 10px; color: var(--text); font-size: 16px; }
.tags { display: flex; flex-wrap: wrap; gap: 6px; margin: 12px 0 0; padding: 0; list-style: none; }
.tags li { font-size: 13px; color: var(--blau); background: var(--hell); padding: 3px 10px; border-radius: 99px; }

/* Zertifizierung */
.steps { display: grid; gap: 16px; counter-reset: s; margin-top: 8px; }
.step { position: relative; padding: 20px 20px 20px 64px; background: var(--weiss); border: 1px solid var(--grau); }
.step::before {
  counter-increment: s; content: counter(s);
  position: absolute; left: 18px; top: 18px; width: 32px; height: 32px; border-radius: 50%;
  background: var(--blau); color: var(--weiss); font-weight: 700; display: grid; place-items: center; font-size: 15px;
}
.step h3 { margin: 0 0 4px; font-size: 17px; }
.step p { margin: 0; font-size: 15.5px; color: var(--text-2); }
.two-col { display: grid; gap: 40px; align-items: start; }
.note { font-size: 14px; color: var(--text-2); margin-top: 18px; }

/* ERP in Wochen */
#erp .tags { margin: 18px 0 0; }
#erp .btn { margin-top: 6px; }
.weeks { list-style: none; margin: 0; padding: 0; border-top: 2px solid var(--blau); }
.weeks li { display: grid; grid-template-columns: 104px 1fr; gap: 16px; padding: 18px 0; border-bottom: 1px solid var(--grau); }
.weeks .wk { font-weight: 700; font-size: 14px; color: var(--blau); letter-spacing: .02em; padding-top: 2px; }
.weeks .wk::after { content: ""; display: block; width: 28px; height: 3px; background: var(--tuerkis); margin-top: 8px; }
.weeks h3 { margin: 0 0 4px; font-size: 17px; }
.weeks p { margin: 0; font-size: 15.5px; color: var(--text-2); }
@media (max-width: 420px) { .weeks li { grid-template-columns: 1fr; gap: 6px; } }

/* Referenzen */
.refs { display: grid; gap: 24px; }
.ref { border-left: 4px solid var(--tuerkis); background: var(--weiss); padding: 22px 22px 22px 24px; border-top: 1px solid var(--grau); border-right: 1px solid var(--grau); border-bottom: 1px solid var(--grau); }
.ref .kicker { font-size: 13px; font-weight: 700; color: var(--text-2); letter-spacing: .08em; text-transform: uppercase; }
.ref h3 { margin: 6px 0 10px; }
.ref p { margin: 0 0 8px; font-size: 16px; }
.ref .result { color: var(--blau); font-weight: 600; font-size: 15.5px; }

/* Über uns */
.about { display: grid; gap: 36px; align-items: start; }
.portrait { max-width: 360px; }
.portrait img { width: 100%; height: auto; border-bottom: 4px solid var(--tuerkis); }
.portrait figcaption { font-size: 14px; color: var(--text-2); margin-top: 10px; }
.timeline { list-style: none; margin: 28px 0 0; padding: 0; border-top: 2px solid var(--blau); }
.timeline li { display: grid; grid-template-columns: 112px 1fr; gap: 14px; padding: 14px 0; border-bottom: 1px solid var(--grau); font-size: 15.5px; }
.timeline .when { font-weight: 700; color: var(--blau); font-size: 14px; letter-spacing: .03em; }
.timeline strong { color: var(--blau); }
.timeline small { display: block; color: var(--text-2); font-size: 14px; }

/* Kontakt */
.contact { background: var(--blau); color: var(--weiss); }
.contact h2 { color: var(--weiss); }
.contact .rule { background: var(--tuerkis); }
.contact p { color: #d8e4ec; }
.contact a { color: var(--weiss); }
.contact-grid { display: grid; gap: 28px; }
.contact-card { border: 1px solid rgba(255,255,255,.28); padding: 24px; }
.contact-card h3 { color: var(--weiss); font-size: 15px; letter-spacing: .1em; text-transform: uppercase; font-weight: 700; }
.contact-card .big { font-size: 20px; font-weight: 600; margin: 0 0 6px; }
.contact-card address { font-style: normal; line-height: 1.7; }

/* Fuß */
.site-footer { background: #00223a; color: #b9c8d3; padding: 28px 0; font-size: 14px; }
.site-footer .wrap { display: flex; flex-wrap: wrap; gap: 12px 28px; justify-content: space-between; }
.site-footer a { color: #e6eef4; }
.site-footer nav a { margin-right: 18px; }

/* Rechtstexte */
.legal { padding: 56px 0 80px; max-width: 78ch; }
.legal h1 { font-size: clamp(28px, 4vw, 40px); }
.legal h2 { font-size: 21px; margin-top: 2em; }
.legal h3 { font-size: 17px; margin-top: 1.4em; }
.legal p, .legal li { font-size: 16px; }
.legal .hinweis { background: var(--hell); border-left: 4px solid var(--tuerkis); padding: 14px 18px; font-size: 15px; }

/* ---------- Ab Tablet ---------- */
@media (min-width: 760px) {
  :root { --gutter: 32px; }
  .hero .wrap { grid-template-columns: 1.25fr 1fr; gap: 56px; }
  .pillars { grid-template-columns: 1fr 1fr; }
  .blocks { grid-template-columns: 1fr 1fr; }
  .refs { grid-template-columns: 1fr 1fr; }
  .two-col { grid-template-columns: 1fr 1fr; gap: 56px; }
  .about { grid-template-columns: 340px 1fr; gap: 56px; }
  .contact-grid { grid-template-columns: 1fr 1fr; }
}
@media (min-width: 1000px) {
  .blocks { grid-template-columns: 1fr 1fr 1fr; }
  .pillars { grid-template-columns: 1fr 1fr 1fr; }
}

/* ---------- Handy-Navigation ---------- */
@media (max-width: 859px) {
  .nav-burger { display: block; }
  .nav {
    display: none; position: absolute; left: 0; right: 0; top: 100%;
    background: var(--weiss); border-bottom: 2px solid var(--blau);
    flex-direction: column; align-items: stretch; gap: 0; padding: 8px var(--gutter) 16px;
  }
  .nav a { padding: 14px 0; border-bottom: 1px solid var(--hell); }
  .nav a.btn-nav { margin-top: 12px; text-align: center; }
  .nav-toggle:checked ~ .nav { display: flex; }
  .site-header .wrap { position: relative; }
}
@media (max-width: 420px) {
  .timeline li { grid-template-columns: 1fr; gap: 2px; }
  .hero-facts .fact strong { font-size: 26px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
@media print { .site-header { position: static; } .nav, .hero-actions { display: none; } }