/* ============================================================
   Vigor Engineering – gemeinsame Grundlage für ALLE Seiten
   Enthält: Farbtokens, Grundtypografie, Kopfzeile mit Dropdown,
   Footer, Buttons, Seitenkopf der Unterseiten, Rechtstexte.
   Seitenspezifisches steht in index.css bzw. contact.css und wird
   NACH dieser Datei geladen.
   ============================================================ */

:root {
  --navy: #0A2C4F;
  --navy-deep: #071F39;
  --accent: #0065E6;
  --accent-light: #55B2FF;
  --hq: #FFB020;
  --surface: #ffffff;
  --surface-alt: #F2F6FA;
  --line: #DDE6EF;
  --text: #17242F;
  --text-muted: #5A6B7B;
  --pad: clamp(1.25rem, 3.5vw, 4.5rem);
  --nav-h: 5.5rem;
}

*, *::before, *::after { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 1.05rem;
  background: var(--surface);
  color: var(--text);
  line-height: 1.65;
  overflow-x: hidden;
}

section { scroll-margin-top: var(--nav-h); }

.hidden { display: none !important; }

/* ================= Typografie ================= */
.section-heading {
  font-size: clamp(1.9rem, 3vw, 2.9rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--navy);
  margin: 0 0 1rem;
  line-height: 1.15;
}

.section-heading.light { color: #ffffff; }

.section-subheading {
  color: var(--text-muted);
  font-size: 1.1rem;
  max-width: 46rem;
  margin: 0 0 3rem;
}

.section-subheading.light { color: rgba(255, 255, 255, 0.75); }

.section-inner { max-width: none; margin: 0; }

.section-link {
  color: var(--accent);
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  white-space: nowrap;
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s ease;
}

.section-link:hover { border-bottom-color: var(--accent); }

/* ================= Buttons ================= */
.btn {
  display: inline-block;
  padding: 0.8rem 1.9rem;
  border-radius: 2px;
  font-size: 0.98rem;
  font-weight: 600;
  text-decoration: none;
  transition: background 0.25s ease, color 0.25s ease, border-color 0.25s ease;
}

.btn-primary { background: var(--navy); color: #ffffff; }
.btn-primary:hover { background: var(--accent); }
.btn-ghost { border: 1px solid var(--navy); color: var(--navy); }
.btn-ghost:hover { background: var(--navy); color: #ffffff; }

/* ================= Kopfzeile ================= */
.site-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  display: block;
  padding: 0;
  background: transparent;
  border-bottom: 1px solid transparent;
  box-shadow: none;
  transition: background 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

/* Verlauf, damit Logo und Menü über einem Bild lesbar bleiben */
.site-nav::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(7, 25, 45, 0.45), rgba(7, 25, 45, 0));
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.site-nav.scrolled {
  background: #ffffff;
  border-bottom-color: var(--line);
  box-shadow: 0 2px 14px rgba(10, 44, 79, 0.08);
}

.site-nav.scrolled::before { opacity: 0; }

.nav-inner {
  position: relative;
  z-index: 1;
  max-width: none;
  margin: 0;
  padding: 1.1rem var(--pad);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: nowrap;
  transition: padding 0.3s ease;
}

.site-nav.scrolled .nav-inner {
  padding-top: 0.6rem;
  padding-bottom: 0.6rem;
}

.nav-logo { display: block; line-height: 0; }

.nav-logo img {
  height: 4rem;
  max-width: 18rem;
  object-fit: contain;
  display: block;
  filter: brightness(0) invert(1) drop-shadow(0 1px 6px rgba(0, 0, 0, 0.35));
  opacity: 0.92;
  transition: filter 0.3s ease, opacity 0.3s ease, height 0.3s ease;
}

.nav-logo:hover img { opacity: 1; }

.site-nav.scrolled .nav-logo img {
  filter: none;
  opacity: 1;
  height: 3.2rem;
}

.nav-tools {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.lang-switcher { display: flex; align-items: center; gap: 0.3rem; }

.site-nav .lang-pill {
  padding: 0.3rem 0.7rem;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  border-radius: 2px;
  border: 1px solid rgba(255, 255, 255, 0.55);
  background: transparent;
  color: #ffffff;
  cursor: pointer;
  transition: background 0.25s ease, color 0.25s ease, border-color 0.25s ease;
}

.site-nav .lang-pill:hover {
  background: #ffffff;
  border-color: #ffffff;
  color: var(--navy);
}

.site-nav.scrolled .lang-pill { border-color: var(--line); color: var(--navy); }

.site-nav.scrolled .lang-pill:hover {
  background: var(--navy);
  border-color: var(--navy);
  color: #ffffff;
}

/* ----- Menü-Button ----- */
.site-nav #menu-button {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.45rem 0.9rem;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #ffffff;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.55);
  border-radius: 2px;
  cursor: pointer;
  transition: background 0.25s ease, color 0.25s ease, border-color 0.25s ease;
}

.site-nav #menu-button:hover,
.site-nav #menu-button[aria-expanded="true"] {
  background: #ffffff;
  border-color: #ffffff;
  color: var(--navy);
}

.site-nav.scrolled #menu-button { color: var(--navy); border-color: var(--line); }

.site-nav.scrolled #menu-button:hover,
.site-nav.scrolled #menu-button[aria-expanded="true"] {
  background: var(--navy);
  border-color: var(--navy);
  color: #ffffff;
}

.burger {
  display: inline-flex;
  flex-direction: column;
  justify-content: space-between;
  width: 1rem;
  height: 0.62rem;
}

.burger i {
  display: block;
  height: 1.5px;
  width: 100%;
  background: currentColor;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

#menu-button[aria-expanded="true"] .burger i:nth-child(1) { transform: translateY(0.3rem) rotate(45deg); }
#menu-button[aria-expanded="true"] .burger i:nth-child(2) { opacity: 0; }
#menu-button[aria-expanded="true"] .burger i:nth-child(3) { transform: translateY(-0.3rem) rotate(-45deg); }

/* ----- Dropdown ----- */
#menu.main-nav {
  position: absolute;
  top: calc(100% + 0.7rem);
  right: 0;
  width: 16rem;
  flex: none;
  background: #ffffff;
  border: 1px solid var(--line);
  box-shadow: 0 1.4rem 3rem rgba(10, 44, 79, 0.18);
  padding: 0.4rem 0;
  z-index: 20;
}

#menu.main-nav.hidden { display: none !important; }

.main-nav ul { display: block; list-style: none; margin: 0; padding: 0; width: 100%; }
.main-nav li { margin: 0; }
.main-nav li + li { border-top: 1px solid var(--line); }

.main-nav li a {
  display: block;
  padding: 0.8rem 1.2rem;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--navy);
  text-decoration: none;
  transition: background 0.2s ease, color 0.2s ease;
}

.main-nav li a:hover { background: var(--surface-alt); color: var(--accent); }

/* ================= Seitenkopf der Unterseiten ================= */
.page-hero {
  position: relative;
  min-height: 26rem;
  display: flex;
  align-items: flex-end;
  padding: calc(var(--nav-h) + 4rem) var(--pad) 3.5rem;
  background-color: var(--navy);
  background-size: cover;
  background-position: center;
}

.page-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(7, 25, 45, 0.85), rgba(7, 25, 45, 0.45));
}

.page-hero-inner { position: relative; z-index: 1; max-width: 52rem; }

.page-hero-eyebrow {
  margin: 0 0 0.6rem;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent-light);
}

.page-hero h1 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3.4rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.12;
  color: #ffffff;
}

/* Seiten ohne Bild im Kopf (Impressum, Datenschutz) */
.page-hero.plain { min-height: 0; padding-bottom: 3rem; background-image: none; }

/* ================= Inhaltsbereiche der Unterseiten ================= */
.page-section { padding: 5rem var(--pad); }
.page-section.alt { background: var(--surface-alt); }
.page-section.dark { background: var(--navy); color: rgba(255, 255, 255, 0.82); }

.prose { max-width: 46rem; }
.prose p { margin: 0 0 1.15rem; }
.prose p:last-child { margin-bottom: 0; }

/* Zweispaltiger Block: Text und Bild */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.5rem;
  align-items: center;
}

.split.reverse .split-media { order: -1; }

.split-media img {
  width: 100%;
  height: 100%;
  max-height: 30rem;
  object-fit: cover;
  display: block;
}

/* Zurück-Link */
.back-link-wrap { padding: 0 var(--pad) 5rem; }

.back-link-wrap a {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--navy);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 1px solid var(--navy);
  padding-bottom: 0.3rem;
  transition: color 0.25s ease, border-color 0.25s ease;
}

.back-link-wrap a:hover { color: var(--accent); border-color: var(--accent); }

/* ================= Rechtstexte (Impressum, Datenschutz) ================= */
.legal { padding: 3.5rem var(--pad) 5rem; }
.legal-inner { max-width: 52rem; }
.legal h2 { margin: 2.4rem 0 0.8rem; font-size: 1.25rem; color: var(--navy); }
.legal h3 { margin: 1.6rem 0 0.6rem; font-size: 1.05rem; color: var(--navy); }
.legal p, .legal li { font-size: 1rem; }
.legal a { color: var(--accent); text-decoration: none; }
.legal a:hover { text-decoration: underline; }
.legal .box {
  background: var(--surface-alt);
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: 1.2rem 1.4rem;
}
.legal .muted { color: var(--text-muted); }
.legal hr { margin: 2.2rem 0; border: 0; border-top: 1px solid var(--line); }
.legal code { background: var(--surface-alt); padding: 2px 6px; border-radius: 2px; }

/* ================= Footer ================= */
.site-footer {
  background: var(--navy-deep);
  color: rgba(255, 255, 255, 0.8);
  text-align: left;
  padding: 4.5rem var(--pad) 2rem;
  font-size: 0.97rem;
}

.footer-inner { max-width: none; margin: 0; }

.footer-columns { display: grid; grid-template-columns: repeat(4, 1fr); gap: 2.5rem; }

.footer-col h4 {
  margin: 0 0 1rem;
  font-size: 0.78rem;
  font-weight: 700;
  color: #ffffff;
  text-transform: uppercase;
  letter-spacing: 0.14em;
}

.footer-col ul { list-style: none; margin: 0; padding: 0; }
.footer-col li { margin-bottom: 0.55rem; }

.footer-col a {
  color: rgba(255, 255, 255, 0.72);
  text-decoration: none;
  transition: color 0.25s ease;
}

.footer-col a:hover { color: var(--accent-light); }

.footer-address p { margin: 0 0 0.4rem; color: rgba(255, 255, 255, 0.72); line-height: 1.5; }

.footer-bottom {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
  font-size: 0.85rem;
}

.footer-legal a { color: rgba(255, 255, 255, 0.72); text-decoration: none; }
.footer-legal a:hover { color: var(--accent-light); }
.footer-sep { margin: 0 0.5rem; color: rgba(255, 255, 255, 0.3); }
.footer-lang { display: flex; align-items: center; gap: 0.5rem; }

.site-footer .lang-pill {
  padding: 0.25rem 0.65rem;
  font-size: 0.78rem;
  font-weight: 600;
  border-radius: 2px;
  background: transparent;
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.35);
  cursor: pointer;
  transition: background 0.25s ease, color 0.25s ease;
}

.site-footer .lang-pill:hover { background: #ffffff; color: var(--navy-deep); }
.footer-copy { color: rgba(255, 255, 255, 0.5); }

/* ================= Responsive ================= */
@media (max-width: 68rem) {
  .footer-columns { grid-template-columns: repeat(2, 1fr); }
  .split { grid-template-columns: 1fr; gap: 2rem; }
  .split.reverse .split-media { order: 0; }
}

@media (max-width: 48rem) {
  .nav-inner { padding: 0.7rem var(--pad); }
  .nav-logo img { height: 2.8rem; max-width: 12rem; }
  .menu-label { display: none; }
  #menu.main-nav { width: 13.5rem; }

  .page-hero { min-height: 18rem; padding-top: calc(var(--nav-h) + 2rem); padding-bottom: 2.5rem; }
  .page-section { padding: 3.5rem var(--pad); }

  .footer-columns { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}