/* === FONTS === */
@font-face { font-family: 'Barlow'; font-style: normal; font-weight: 400; font-display: swap;
  src: url('../fonts/barlow-latin-400-normal.woff2') format('woff2'); }
@font-face { font-family: 'Barlow'; font-style: normal; font-weight: 500; font-display: swap;
  src: url('../fonts/barlow-latin-500-normal.woff2') format('woff2'); }
@font-face { font-family: 'Barlow'; font-style: normal; font-weight: 600; font-display: swap;
  src: url('../fonts/barlow-latin-600-normal.woff2') format('woff2'); }
@font-face { font-family: 'Barlow Condensed'; font-style: normal; font-weight: 700; font-display: swap;
  src: url('../fonts/barlow-condensed-latin-700-normal.woff2') format('woff2'); }

/* === DESIGN TOKENS === */
:root {
  /* Brand colors */
  --color-navy:          #0c2340;
  --color-navy-dark:     #081929;
  --color-orange:        #FF6900;
  --color-orange-dark:   #e55d00;
  --color-orange-subtle: rgba(255, 105, 0, 0.15);
  --color-orange-border: rgba(255, 105, 0, 0.40);

  /* Neutrals */
  --color-white:     #fff;
  --color-gray-50:   #f4f4f2;
  --color-gray-100:  #f0f0ee;
  --color-gray-200:  #e2e8f0;
  --color-gray-600:  #4a5568;

  /* Text on dark surfaces */
  --text-on-dark:        rgba(255, 255, 255, 0.85);
  --text-on-dark-muted:  rgba(255, 255, 255, 0.7);
  --text-on-dark-subtle: rgba(255, 255, 255, 0.55);

  /* Surfaces on dark */
  --surface-on-dark:        rgba(255, 255, 255, 0.05);
  --surface-on-dark-border: rgba(255, 255, 255, 0.1);

  /* Typography */
  --font-sans:    'Barlow', system-ui, -apple-system, sans-serif;
  --font-display: 'Barlow Condensed', sans-serif;

  --text-xs:    0.85rem;
  --text-sm:    0.95rem;
  --text-base:  1rem;
  --text-md:    1.2rem;
  --text-lg:    1.35rem;
  --text-xl:    1.7rem;
  --display-sm: clamp(1.3rem, 5.5vw, 3.36rem);
  --display-md: 2.65rem;
  --display-lg: clamp(1.6rem, 8vw, 4.8rem);

  --leading-tight:   1.1;
  --leading-snug:    1.4;
  --leading-base:    1.5;
  --leading-normal:  1.6;
  --leading-relaxed: 1.75;

  /* Spacing (4px base unit) */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-7:  1.75rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;

  /* Radii */
  --radius-sm: 3px;
  --radius-md: 4px;
  --radius-lg: 6px;

  /* Motion */
  --transition-fast: 0.2s;

  /* Layout */
  --container-max: 1100px;
}

/* === RESET / BASE === */
* { box-sizing: border-box; }

@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: var(--font-sans);
  color: var(--color-navy);
  background: var(--color-white);
}

main { flex: 1; }
address { font-style: normal; }

/* === A11Y === */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  z-index: 200;
  padding: var(--space-2) var(--space-4);
  background: var(--color-orange);
  color: var(--color-white);
  font-weight: 700;
  text-decoration: none;
  border-radius: 0 0 var(--radius-md) var(--radius-md);
}
.skip-link:focus { top: 0; }

:focus-visible {
  outline: 2px solid var(--color-orange);
  outline-offset: 3px;
  border-radius: 2px;
}

/* === LAYOUT === */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
}

main > section { padding: var(--space-20) var(--space-8); }

/* === TYPOGRAPHY PRIMITIVES === */
.eyebrow {
  display: inline-block;
  margin-bottom: var(--space-3);
  color: var(--color-orange);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.section-title {
  margin: 0 0 var(--space-4);
  font-family: var(--font-display);
  font-size: var(--display-sm);
  font-weight: 700;
  line-height: var(--leading-tight);
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--color-navy);
}

.lead {
  max-width: 680px;
  margin-bottom: var(--space-12);
  font-size: var(--text-lg);
  line-height: var(--leading-base);
  color: var(--color-gray-600);
}
.lead--on-dark { color: var(--text-on-dark); }

.divider {
  width: 48px;
  height: 4px;
  margin: var(--space-4) 0 var(--space-8);
  background: var(--color-orange);
  border-radius: 2px;
}

/* === NAVIGATION === */
nav {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-5) 0;
  background: var(--color-navy);
}
.nav__inner {
  width: 100%;
  max-width: var(--container-max);
  padding: 0 var(--space-8);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav__logo img { height: 5.5rem; width: auto; }
.nav__links {
  display: flex;
  gap: var(--space-8);
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav__links a {
  font-size: var(--text-base);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--text-on-dark-muted);
  transition: color var(--transition-fast);
}
.nav__links a:hover,
.nav__links a:focus-visible,
.nav__links a.is-active { color: var(--color-orange); }
.nav__links a.nav__cta {
  padding: var(--space-2) var(--space-5);
  background: var(--color-orange);
  color: var(--color-navy);
  font-weight: 700;
  letter-spacing: 0.06em;
  border-radius: var(--radius-sm);
}
.nav__links a.nav__cta:hover,
.nav__links a.nav__cta:focus-visible {
  background: var(--color-orange-dark);
  color: var(--color-navy);
}

/* === HERO === */
.hero {
  position: relative;
  overflow: hidden;
  min-height: 540px;
  padding: var(--space-20) var(--space-8) var(--space-16);
  display: flex;
  align-items: center;
  background: var(--color-navy);
  background-image:
    linear-gradient(0deg, transparent 60%, var(--color-navy) 90%),
    linear-gradient(0deg, var(--color-navy) 5%, transparent 30%),
    url('../images/bg.png');
  background-repeat: repeat-x, repeat-x, repeat;
}
.hero__accent {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 5px;
  background: var(--color-orange);
}
.hero__content {
  position: relative;
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
}
.hero .eyebrow { margin-bottom: var(--space-6); }
.hero h1 {
  margin: 0 0 var(--space-6);
  max-width: 700px;
  font-family: var(--font-display);
  font-size: var(--display-lg);
  font-weight: 700;
  line-height: var(--leading-tight);
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--color-white);
}
.hero h1 span { color: var(--color-orange); }
.hero .lead { max-width: 580px; margin-bottom: var(--space-10); }

.hero__stats {
  display: flex;
  gap: var(--space-10);
  flex-wrap: wrap;
}
.hero__stats > div {
  display: flex;
  flex-direction: column-reverse;
}
.hero__stat-num {
  margin: 0; /* reset <dd> browser default */
  font-family: var(--font-display);
  font-size: var(--display-md);
  line-height: 1;
  color: var(--color-orange);
}
.hero__stat-num span { font-weight: 700; }
.hero__stat-label {
  margin-top: 3px;
  font-size: var(--text-base);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-on-dark-muted);
}

/* === ABOUT === */
.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}
.about__text {
  font-size: var(--text-md);
  line-height: var(--leading-relaxed);
  color: var(--color-gray-600);
}

.about__highlights {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-5);
  margin-top: var(--space-8);
}
.stat-card {
  padding: var(--space-4) var(--space-5);
  background: var(--color-gray-50);
  border-left: 3px solid var(--color-orange);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}
.stat-card strong {
  display: block;
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-navy);
}
.stat-card span {
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--color-gray-600);
}

.about__features {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  padding: var(--space-12) var(--space-10);
  background: var(--color-navy);
  border-radius: var(--radius-lg);
}
.about__feature {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
}
.about__feature-icon {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  background-color: var(--color-orange-subtle);
  background-repeat: no-repeat;
  background-position: center;
  background-size: 20px 20px;
  border-radius: var(--radius-md);
}
.about__feature-icon--shield { background-image: url('../images/icon-about-shield.svg'); }
.about__feature-icon--clock  { background-image: url('../images/icon-about-clock.svg'); }
.about__feature-icon--users  { background-image: url('../images/icon-about-users.svg'); }
.about__feature-icon--sun    { background-image: url('../images/icon-about-sun.svg'); }
.about__feature strong {
  display: block;
  margin-bottom: var(--space-1);
  font-size: var(--text-md);
  font-weight: 600;
  color: var(--color-white);
}
.about__feature p {
  margin: 0;
  font-size: var(--text-lg);
  line-height: var(--leading-normal);
  color: var(--text-on-dark);
}

/* === SERVICES === */
#services { background: var(--color-gray-50); }

.services__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-8);
}
.service-card {
  overflow: hidden;
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
}
.service-card__header {
  display: flex;
  gap: var(--space-4);
  align-items: center;
  padding: var(--space-6) var(--space-7);
  background: var(--color-navy);
}
.service-card__icon {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  background-color: var(--color-orange);
  background-repeat: no-repeat;
  background-position: center;
  background-size: 22px 22px;
  border-radius: var(--radius-md);
}
.service-card__icon--electric { background-image: url('../images/icon-leistung-elektro.svg'); }
.service-card__icon--shl      { background-image: url('../images/icon-leistung-shl.svg'); }
.service-card__header h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-white);
}
.service-card__body { padding: var(--space-6) var(--space-7); }
.service-card__body ul { list-style: none; margin: 0; padding: 0; }
.service-card__body li {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
  padding: var(--space-2) 0;
  border-bottom: 1px solid var(--color-gray-100);
  font-size: var(--text-lg);
  line-height: var(--leading-normal);
  color: var(--color-gray-600);
}
.service-card__body li:last-child { border-bottom: none; }
.bullet-dot {
  width: 6px;
  height: 6px;
  flex-shrink: 0;
  margin-top: 14px; /* visual alignment with first text line */
  background: var(--color-orange);
  border-radius: 50%;
}

/* === CONTACT === */
#contact { background: var(--color-navy); }
#contact .section-title { color: var(--color-white); }

.contact-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
  gap: var(--space-6);
  margin-bottom: var(--space-12);
}
.contact-card {
  display: flex;
  gap: var(--space-5);
  align-items: flex-start;
  padding: var(--space-6);
  background: var(--surface-on-dark);
  border: 1px solid var(--surface-on-dark-border);
  border-radius: var(--radius-lg);
}
.contact-card__main {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.contact-card__aside {
  flex-shrink: 0;
  width: 140px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-2);
}
.contact-card__header {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
}
.contact-card__avatar {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-orange);
  border-radius: var(--radius-md);
  font-family: var(--font-display);
  font-size: var(--text-md);
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--color-navy);
  user-select: none;
}
.contact-card__name {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--color-white);
}
.contact-card__role {
  margin-top: 2px;
  font-size: var(--text-base);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-orange);
}
.contact-card__details {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-2);
}

.contact-link {
  display: inline-flex;
  gap: var(--space-2);
  align-items: center;
  font-size: var(--text-md);
  text-decoration: none;
  color: var(--text-on-dark-muted);
  overflow-wrap: break-word;
  transition: color var(--transition-fast);
}
.contact-link::before {
  content: '';
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
  opacity: 0.7;
}
.contact-link--phone::before { background-image: url('../images/icon-phone.svg'); }
.contact-link--email::before { background-image: url('../images/icon-email.svg'); }
.contact-link:hover,
.contact-link:focus-visible { color: var(--color-orange); }

.qr-code {
  width: 140px;
  height: 140px;
  overflow: hidden;
  background: var(--color-white);
  border-radius: var(--radius-md);
  flex-shrink: 0;
}
.qr-code img { width: 100%; height: 100%; display: block; }
.qr-code__hint {
  font-size: var(--text-xs);
  line-height: var(--leading-snug);
  color: var(--text-on-dark-subtle);
}

.vcard-link {
  display: none;
  align-self: flex-start;
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--color-orange);
  border: 1px solid var(--color-orange-border);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), border-color var(--transition-fast);
}
.vcard-link:hover,
.vcard-link:focus-visible {
  color: var(--color-white);
  border-color: var(--color-orange);
}

/* === COMPANY INFO === */
.company-info {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-8);
  align-items: flex-start;
  padding: var(--space-6) var(--space-8);
  background: var(--surface-on-dark);
  border: 1px solid var(--surface-on-dark);
  border-radius: var(--radius-lg);
}
.company-info__block .eyebrow {
  margin-bottom: var(--space-2);
  font-size: var(--text-sm);
  letter-spacing: 0.1em;
}
.company-info__value {
  font-size: var(--text-lg);
  line-height: var(--leading-normal);
  color: var(--text-on-dark-muted);
}
.company-info__value a {
  color: var(--text-on-dark-muted);
  text-decoration: none;
}
.company-info__value a:hover,
.company-info__value a:focus-visible { color: var(--color-orange); }

/* === LEGAL PAGES === */
.legal-page {
  padding: var(--space-16) var(--space-8) var(--space-20);
  background: var(--color-white);
}
.legal-content {
  max-width: 720px;
  margin-top: var(--space-10);
}
.legal-section { margin-bottom: var(--space-6); }
.legal-section h2 {
  margin: 0 0 var(--space-3);
  font-family: var(--font-display);
  font-size: var(--text-md);
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-navy);
}
.legal-section h3 {
  margin: var(--space-5) 0 var(--space-2);
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-navy);
}
.legal-section p,
.legal-section address {
  margin: 0 0 var(--space-2);
  font-size: var(--text-md);
  line-height: var(--leading-relaxed);
  color: var(--color-gray-600);
}
.legal-section a {
  color: var(--color-orange);
  text-decoration: none;
}
.legal-section a:hover,
.legal-section a:focus-visible { text-decoration: underline; }

/* === FOOTER === */
footer {
  padding: var(--space-6) var(--space-8);
  text-align: center;
  font-size: var(--text-base);
  background: var(--color-navy-dark);
  color: var(--text-on-dark-subtle);
}
footer a {
  text-decoration: none;
  color: var(--text-on-dark-subtle);
}
footer a:hover,
footer a:focus-visible { color: var(--color-orange); }
.footer__legal { margin-top: var(--space-2); }
.footer__legal a { margin: 0 var(--space-2); }

/* === RESPONSIVE === */
@media (max-width: 1024px) {
  .contact-cards { grid-template-columns: repeat(auto-fit, minmax(500px, 1fr)); }
}

@media (max-width: 768px) {
  nav { padding: var(--space-4) 0; }
  .nav__inner { padding: 0 var(--space-5); }
  .nav__logo img { height: 3.5rem; }
  .nav__links { gap: var(--space-5); }
  .nav__links a { font-size: var(--text-xs); }

  .hero {
    padding: var(--space-12) var(--space-5) var(--space-10);
    min-height: auto;
  }
  .hero__stats { gap: var(--space-6); }

  main > section { padding: var(--space-12) var(--space-5); }

  .about__features { padding: var(--space-7) var(--space-5); gap: var(--space-5); }
  .service-card__header,
  .service-card__body { padding: var(--space-5); }
  .contact-card { padding: var(--space-5); }
  .company-info { padding: var(--space-5); flex-direction: column; gap: var(--space-5); }

  .about__grid { grid-template-columns: 1fr; gap: var(--space-8); }
  .services__grid { grid-template-columns: 1fr; }

  .contact-card__aside { display: none; }
  .vcard-link { display: inline-block; }

  .legal-page { padding: var(--space-12) var(--space-5) var(--space-16); }
}

@media (max-width: 600px) {
  .contact-cards { grid-template-columns: 1fr; }
  .contact-card { flex-direction: column; }
}

@media (max-width: 480px) {
  nav { padding: var(--space-3) 0; }
  .nav__inner { padding: 0 var(--space-4); }
  .nav__logo img { height: 2.75rem; }
  .nav__links { gap: var(--space-3); }
  .nav__links a { font-size: 0.75rem; letter-spacing: 0.04em; }
  .nav__links a.nav__cta { padding: var(--space-2) var(--space-3); }

  .about__highlights { grid-template-columns: 1fr; }
  .hero__stats { gap: var(--space-5); }
  .hero { padding: var(--space-10) var(--space-4) var(--space-8); }
  main > section { padding: var(--space-10) var(--space-4); }

  .about__features { padding: var(--space-5) var(--space-4); }
  .service-card__header,
  .service-card__body { padding: var(--space-4); }
  .contact-card { padding: var(--space-4); }
  .company-info { padding: var(--space-4); }

  .hero__stat-num { font-size: var(--text-xl); }
  .contact-card__name { font-size: var(--text-md); }

  .legal-page { padding: var(--space-10) var(--space-4) var(--space-12); }
}