/* ===== Design tokens ===== */
:root {
  --blue: #204588;
  --blue-dark: #16305f;
  --blue-soft-bg: #f2f5fb;
  --ink: #1a1d21;
  --ink-soft: #41474f;
  --muted: #6b727c;
  --muted-light: #9aa3af;
  --border: #e6e9ee;
  --border-strong: #d6dae1;
  --border-strong-2: #c9ced7;
  --bg-soft: #f6f7f9;
  --bg-soft-2: #fbfbfc;
  --bg-placeholder: #dfe3e9;
  --dark: #17191c;
  --dark-2: #22262b;
  --dark-border: #2a2e34;
  --dark-border-2: #3a3f47;
  --dark-muted: #c8cdd5;
  --dark-accent: #8fa8d8;
  --error: #b42318;
  --radius: 2px;
  --max: 1240px;
  --font-sans: Archivo, Helvetica, Arial, sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;
}

/* ===== Reset ===== */
* { box-sizing: border-box; }
body { margin: 0; background: #fff; font-family: var(--font-sans); color: var(--ink); -webkit-font-smoothing: antialiased; }
img { display: block; max-width: 100%; }
a { color: var(--blue); text-decoration: none; }
a:hover { color: var(--blue-dark); }
h1, h2, h3, h4, p { margin: 0; }
button { font-family: var(--font-sans); }
.mono { font-family: var(--font-mono); }
.muted { color: var(--muted); }

.eyebrow {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--blue);
}
.eyebrow--light { color: var(--dark-accent); }

.container {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 clamp(20px, 4vw, 48px);
}

.section { padding: clamp(52px, 7vw, 104px) clamp(20px, 4vw, 48px); border-bottom: 1px solid var(--border); }
.section--tight { padding: clamp(40px, 5vw, 80px) clamp(20px, 4vw, 48px); }
.section--soft { background: var(--bg-soft); }
.section--dark { background: var(--dark); color: #fff; }
.section--blue { background: var(--blue); color: #fff; }
.section--no-border { border-bottom: none; }

/* ===== Buttons ===== */
.btn {
  display: inline-block;
  font-size: 16px;
  font-weight: 600;
  padding: 15px 26px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  text-align: center;
}
.btn--small { font-size: 14.5px; padding: 12px 18px; }
.btn--block { display: block; width: 100%; }
.btn--primary { background: var(--blue); color: #fff; }
.btn--primary:hover { background: var(--blue-dark); color: #fff; }
.btn--secondary { border-color: var(--border-strong-2); color: var(--ink); background: #fff; }
.btn--secondary:hover { border-color: var(--blue); color: var(--blue); }
.btn--on-dark { border-color: rgba(255,255,255,.45); color: #fff; background: transparent; }
.btn--on-dark:hover { border-color: #fff; color: #fff; }
.btn--on-blue { background: #fff; color: var(--blue); }
.btn--on-blue:hover { background: #e6e9ee; color: var(--blue); }
.btn--white-on-dark { background: #fff; color: var(--dark); }
.btn--white-on-dark:hover { background: var(--border); color: var(--dark); }

/* ===== Header ===== */
.site-header {
  position: sticky; top: 0; z-index: 50;
  border-bottom: 1px solid var(--border);
}
/* backdrop-filter lives on a pseudo-element, not .site-header itself, so
   .site-header never becomes a containing block for fixed-position
   descendants (the mobile nav overlay relies on being fixed to the viewport). */
.site-header::before {
  content: "";
  position: absolute; inset: 0; z-index: -1;
  background: rgba(255,255,255,.96);
  backdrop-filter: blur(8px);
}
.site-header__inner {
  position: relative;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 clamp(20px, 4vw, 48px);
  display: flex;
  align-items: center;
  gap: clamp(16px, 3vw, 40px);
  min-height: 84px;
}
.site-header__logo { display: block; flex-shrink: 0; }
.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(14px, 2vw, 30px);
  flex-wrap: wrap;
  font-size: 15px;
  font-weight: 500;
}
.site-nav a { color: var(--ink-soft); }
.site-nav > a:first-child { color: var(--blue); padding-bottom: 3px; border-bottom: 2px solid var(--blue); }
.site-nav__mobile-cta { display: none; }
.site-header__actions { display: flex; align-items: center; gap: 18px; margin-left: auto; }
.site-header__phone { font-size: 13px; }
.nav-toggle {
  display: none;
  width: 44px; height: 44px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  background: #fff;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
}
.nav-toggle span { display: block; width: 18px; height: 2px; background: var(--ink); }
.nav-toggle[aria-expanded="true"] { border-color: var(--blue); }

.breadcrumb { border-bottom: 1px solid var(--border); }
.breadcrumb__inner { max-width: var(--max); margin: 0 auto; padding: 16px clamp(20px, 4vw, 48px); font-size: 12.5px; color: var(--muted); }
.breadcrumb__current { color: var(--blue); }

/* ===== Hero ===== */
.hero {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
  align-items: stretch;
  border-bottom: 1px solid var(--border);
}
.hero__content {
  padding: clamp(40px, 6vw, 88px) clamp(20px, 4vw, 64px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 26px;
  background: var(--bg-soft-2);
}
.hero__content h1 {
  font-size: clamp(31px, 4.2vw, 54px);
  line-height: 1.06;
  letter-spacing: -.02em;
  font-weight: 700;
  text-wrap: balance;
}
.hero__content p { font-size: clamp(16px, 1.3vw, 19px); line-height: 1.6; color: var(--ink-soft); max-width: 52ch; }
.hero__actions { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 6px; }
.hero__stats {
  display: flex; gap: clamp(18px, 3vw, 40px); flex-wrap: wrap;
  margin-top: 14px; padding-top: 24px; border-top: 1px solid var(--border);
  font-family: var(--font-mono); font-size: 12.5px; letter-spacing: .04em; color: var(--muted);
}
.hero__media { position: relative; min-height: clamp(280px, 42vw, 560px); background: var(--bg-placeholder); }
.hero__media--sub { min-height: clamp(240px, 32vw, 440px); }
.hero__media img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }

/* ===== Generic content grids ===== */
.split { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: clamp(28px, 4vw, 64px); }
.split--tight { gap: clamp(24px, 4vw, 56px); }
.split--end { align-items: end; margin-bottom: clamp(28px, 4vw, 48px); }
.stack { display: grid; gap: 22px; }
.stack--tight { gap: 18px; }

.fact-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 20px; }
.fact-grid--narrow { grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 18px; }
.fact {
  border-top: 2px solid var(--blue);
  padding-top: 14px;
}
.fact strong { display: block; font-size: 15px; margin-bottom: 6px; }
.fact span { font-size: 14.5px; line-height: 1.55; color: var(--muted); }
.fact--sm span { font-size: 14px; }

h2.section-title { font-size: clamp(24px, 2.6vw, 34px); line-height: 1.15; letter-spacing: -.015em; font-weight: 700; margin-top: 14px; }
h2.section-title--lg { font-size: clamp(26px, 3vw, 40px); line-height: 1.1; letter-spacing: -.02em; }
h2.section-title--sm { font-size: clamp(22px, 2.4vw, 30px); line-height: 1.2; letter-spacing: -.015em; margin-top: 0; }
p.section-lead { font-size: 16.5px; line-height: 1.6; color: var(--ink-soft); }
p.body-lead { font-size: 17px; line-height: 1.65; color: var(--ink-soft); }

/* ===== 5S selector (homepage) ===== */
.s5-tabs { display: flex; flex-wrap: wrap; gap: 2px; background: var(--border); border: 1px solid var(--border); }
.s5-tab {
  flex: 1 1 180px;
  background: #fff; color: var(--ink);
  border: none; cursor: pointer; text-align: left;
  padding: 22px 20px; display: flex; flex-direction: column; gap: 7px;
  font-family: var(--font-sans); min-height: 132px;
}
.s5-tab span:first-child { font-family: var(--font-mono); font-size: 11.5px; font-weight: 600; letter-spacing: .16em; opacity: .7; }
.s5-tab span:nth-child(2) { font-size: 19px; font-weight: 700; letter-spacing: -.01em; }
.s5-tab span:nth-child(3) { font-size: 13.5px; line-height: 1.4; opacity: .85; }
.s5-tab.is-active { background: var(--blue); color: #fff; }

.s5-panel { background: #fff; border: 1px solid var(--border); border-top: none; display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }
.s5-panel[hidden] { display: none; }
.s5-panel__media { position: relative; min-height: clamp(240px, 30vw, 420px); background: var(--bg-placeholder); }
.s5-panel__media img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.s5-panel__body { padding: clamp(28px, 3.5vw, 52px); display: flex; flex-direction: column; gap: 20px; }
.s5-panel__body h3 { font-size: clamp(22px, 2.2vw, 30px); line-height: 1.15; font-weight: 700; letter-spacing: -.015em; margin-top: 10px; }
.s5-panel__body p { font-size: 16.5px; line-height: 1.6; color: var(--ink-soft); max-width: 56ch; }
.chip-list { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.chip { background: var(--bg-soft); border: 1px solid var(--border); font-size: 13.5px; color: var(--ink-soft); padding: 7px 12px; border-radius: var(--radius); }
.s5-panel__footer { margin-top: auto; display: flex; align-items: center; gap: 20px; flex-wrap: wrap; padding-top: 8px; }

.s5-links { margin-top: clamp(24px, 3vw, 40px); display: flex; flex-wrap: wrap; gap: 1px; background: var(--border); border: 1px solid var(--border); }
.s5-links a { flex: 1 1 220px; background: #fff; padding: 20px; display: flex; flex-direction: column; gap: 6px; }
.s5-links a:hover { background: var(--bg-soft); }
.s5-links a .eyebrow { font-size: 11px; }
.s5-links a strong { font-size: 15.5px; font-weight: 600; color: var(--ink); }
.s5-links a span.count { font-size: 13px; color: var(--muted); }

/* ===== Tile grids (Warum EUROCS) ===== */
.tile-grid { display: grid; grid-template-columns: minmax(0, 1fr); gap: 1px; background: var(--border); border: 1px solid var(--border); }
.tile { background: #fff; padding: clamp(24px, 2.5vw, 34px); display: flex; flex-direction: column; gap: 10px; }
.tile .num { font-family: var(--font-mono); font-size: 12px; color: var(--blue); }
.tile strong { font-size: 18px; font-weight: 700; }
.tile span.desc { font-size: 15px; line-height: 1.6; color: var(--ink-soft); }

@media (min-width: 641px) {
  .tile-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (min-width: 901px) {
  .tile-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

/* ===== Gruppe (dark) ===== */
.gruppe-grid { max-width: var(--max); margin: 0 auto; display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: clamp(32px, 5vw, 72px); align-items: center; }
.gruppe-links { display: flex; flex-wrap: wrap; gap: 1px; background: var(--dark-border); border: 1px solid var(--dark-border); }
.gruppe-links a, .gruppe-links span.active {
  flex: 1 1 200px; padding: 16px 18px; font-size: 15.5px;
}
.gruppe-links span.active { background: var(--blue); color: #fff; font-weight: 600; }
.gruppe-links a { background: var(--dark); color: #e6e9ee; font-weight: 500; }
.gruppe-links a:hover { background: var(--dark-2); color: #e6e9ee; }
.gruppe-seal { display: flex; justify-content: center; align-items: center; background: #fff; padding: clamp(28px, 4vw, 56px); }
.gruppe-seal img { width: 100%; max-width: 280px; height: auto; }

/* ===== Contact ===== */
.contact-grid { max-width: var(--max); margin: 0 auto; display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: clamp(32px, 4vw, 64px); }
.contact-info { display: flex; flex-direction: column; gap: 22px; }
.contact-info__list { display: grid; gap: 14px; padding-top: 8px; border-top: 1px solid var(--border); font-family: var(--font-mono); font-size: 14px; color: var(--ink-soft); }
.contact-form { background: #fff; border: 1px solid var(--border); padding: clamp(24px, 3vw, 40px); display: grid; gap: 18px; }
.contact-form__row { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 18px; }
.field { display: grid; gap: 7px; font-size: 13.5px; font-weight: 600; color: var(--ink-soft); }
.field input, .field textarea {
  border: 1px solid var(--border-strong); border-radius: var(--radius); padding: 13px 14px;
  font-size: 15px; font-family: var(--font-sans); color: var(--ink);
}
.field textarea { min-height: 110px; resize: vertical; }
.checkbox-list { display: flex; flex-wrap: wrap; gap: 8px; }
.tag-check {
  border: 1px solid var(--border-strong); color: var(--ink-soft); font-size: 13.5px; padding: 8px 13px;
  border-radius: var(--radius); display: inline-flex; align-items: center; gap: 6px; cursor: pointer;
}
.tag-check input { margin: 0; }
.tag-check.is-checked { border-color: var(--blue); color: var(--blue); background: var(--blue-soft-bg); }
.form-note { font-size: 12.5px; color: var(--muted); line-height: 1.5; }

/* ===== Service detail pages ===== */
.overview-grid { max-width: var(--max); margin: 0 auto; display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: clamp(24px, 4vw, 56px); }
.scope-header { display: flex; align-items: baseline; gap: 16px; flex-wrap: wrap; margin-bottom: 26px; }
.scope-list { columns: clamp(160px, 15vw, 220px); column-gap: 32px; font-size: 15px; line-height: 2.1; color: var(--ink-soft); }
.list-grid { display: grid; gap: 1px; background: var(--border); border: 1px solid var(--border); }
.list-grid > div { background: #fff; padding: 16px 18px; font-size: 15.5px; }
.steps { display: grid; gap: 16px; }
.step { display: flex; gap: 16px; }
.step .step-num { font-family: var(--font-mono); font-size: 13px; color: var(--blue); padding-top: 3px; }
.step strong { display: block; font-size: 16px; }
.step span { font-size: 14.5px; color: var(--muted); line-height: 1.55; }
.related-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 1px; background: var(--border); border: 1px solid var(--border); }
.related-grid a { background: #fff; padding: 22px; display: grid; gap: 8px; }
.related-grid a:hover { background: var(--bg-soft-2); }
.related-grid a strong { font-size: 16.5px; color: var(--ink); }
.related-grid a span.desc { font-size: 14px; color: var(--muted); line-height: 1.5; }
.cta-band { max-width: var(--max); margin: 0 auto; display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: clamp(24px, 4vw, 56px); align-items: center; }
.cta-band h2 { font-size: clamp(24px, 2.8vw, 36px); line-height: 1.15; letter-spacing: -.02em; font-weight: 700; margin-bottom: 14px; }
.cta-band p { font-size: 17px; line-height: 1.6; color: #dbe3f2; max-width: 48ch; }

/* ===== Footer ===== */
.site-footer { background: #f0f2f5; border-top: 1px solid var(--border); padding: clamp(40px, 5vw, 72px) clamp(20px, 4vw, 48px) 28px; }
.site-footer__grid { max-width: var(--max); margin: 0 auto; display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: clamp(24px, 3vw, 48px); }
.footer-col { display: grid; gap: 16px; align-content: start; }
.footer-col__text { font-size: 14.5px; line-height: 1.6; color: var(--ink-soft); max-width: 34ch; }
.footer-col__seal { margin-top: 4px; }
.footer-col__heading { font-size: 11.5px; letter-spacing: .16em; text-transform: uppercase; color: var(--muted); }
.footer-col a { font-size: 14.5px; color: var(--ink-soft); }
.footer-col .btn { justify-self: start; margin-top: 4px; }
.site-footer__bottom {
  max-width: var(--max); margin: clamp(28px, 4vw, 48px) auto 0; padding-top: 20px;
  border-top: 1px solid #e0e4ea; display: flex; flex-wrap: wrap; gap: 18px; align-items: center;
  font-size: 12.5px; color: var(--muted);
}
.site-footer__bottom a { color: var(--muted); }
.site-footer__bottom-right { margin-left: auto; }

/* ===== Accessibility and form states ===== */
.skip-link { position: fixed; left: 16px; top: 12px; z-index: 100; transform: translateY(-180%); padding: 12px 16px; background: var(--dark); color: #fff; font-weight: 600; }
.skip-link:focus { transform: translateY(0); color: #fff; }
:focus-visible { outline: 3px solid #5b8ed8; outline-offset: 3px; }
.s5-tab:focus-visible, .btn:focus-visible, .nav-toggle:focus-visible { outline-offset: -3px; }
.field input:focus, .field textarea:focus { border-color: var(--blue); outline: 3px solid rgba(32,69,136,.18); outline-offset: 0; }
.field input[aria-invalid="true"], .field textarea[aria-invalid="true"] { border-color: var(--error); }
.field-error { display: block; color: var(--error); font-size: 12.5px; line-height: 1.4; font-weight: 500; }
.fieldset { border: 0; padding: 0; margin: 0; }
.fieldset legend { font-size: 13.5px; font-weight: 600; color: var(--ink-soft); margin-bottom: 9px; }
.consent-field { display: flex; gap: 9px; align-items: flex-start; font-size: 13.5px; line-height: 1.5; color: var(--ink-soft); }
.consent-field input { width: 18px; height: 18px; flex: 0 0 auto; margin-top: 1px; }
.form-status { margin-bottom: 18px; padding: 14px 16px; border: 1px solid var(--border-strong); font-size: 14px; line-height: 1.5; }
.form-status--success { border-color: #78a987; background: #eff8f1; color: #174d2a; }
.form-status--error { border-color: #d99b94; background: #fff3f1; color: #7a2018; }
.honeypot { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
.service-note { margin: -8px 0 24px; max-width: 72ch; }
.content-page { max-width: 880px; }
.content-page > .section-title { margin-bottom: 34px; }
.legal-copy { display: grid; gap: 18px; max-width: 72ch; }
.legal-copy h2 { font-size: 22px; line-height: 1.2; margin-top: 18px; }
.legal-copy p { font-size: 16px; line-height: 1.7; color: var(--ink-soft); }
.legal-copy a { text-decoration: underline; text-underline-offset: 3px; }
.content-page > p { margin-top: 22px; }
.gruppe-links span:not(.active) { flex: 1 1 200px; padding: 16px 18px; font-size: 15.5px; background: var(--dark); color: var(--dark-muted); }

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .site-nav {
    display: none;
    position: fixed; inset: 84px 0 0 0; z-index: 40;
    background: #fff; overflow-y: auto;
    flex-direction: column; align-items: stretch; gap: 0;
    padding: 8px 0 24px 0;
  }
  .site-nav.is-open { display: flex; }
  .site-nav > a { padding: 18px 20px; border-bottom: 1px solid var(--border); font-size: 18px; font-weight: 600; color: var(--ink); }
  .site-nav > a:first-child { color: var(--blue); border-bottom: 1px solid var(--border); padding-bottom: 18px; }
  .site-nav__mobile-cta { display: grid; gap: 12px; padding: 20px; }
  .site-header__phone { display: none; }
  .site-header__actions .btn--primary { display: none; }
  .nav-toggle { display: flex; }
}

@media (max-width: 640px) {
  .hero, .split, .contact-grid, .gruppe-grid, .overview-grid, .cta-band { grid-template-columns: 1fr; }
  .hero__content { padding: 40px 20px; }
  .hero__content h1 { font-size: clamp(30px, 10vw, 42px); }
  .hero__media, .hero__media--sub { min-height: 280px; }
  .s5-panel { grid-template-columns: 1fr; }
  .contact-form__row { grid-template-columns: 1fr; }
  .scope-list { columns: 1; }
  .site-footer__bottom-right { margin-left: 0; width: 100%; }
  .btn { min-height: 44px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}