/* co-langzeit.de – Prüfsachverständigenbüro Hilfer */

:root {
  --color-primary: #0b3d5c;
  --color-primary-dark: #082c42;
  --color-accent: #d98c1f;
  --color-bg: #ffffff;
  --color-bg-alt: #f4f7f9;
  --color-text: #24313d;
  --color-text-muted: #56646f;
  --color-border: #e1e7eb;
  --max-width: 1120px;
  --radius: 10px;
  font-size: 16px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
}

a {
  color: var(--color-primary);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

img {
  max-width: 100%;
  display: block;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  padding-bottom: 14px;
}

.brand {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.brand-name {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary-dark);
}

.brand-tagline {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: 8px 10px;
  font-size: 1.1rem;
  cursor: pointer;
}

.main-nav ul {
  list-style: none;
  display: flex;
  gap: 26px;
  margin: 0;
  padding: 0;
}

.main-nav a {
  color: var(--color-text);
  font-weight: 600;
  font-size: 0.95rem;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--color-primary);
  text-decoration: none;
  border-bottom: 2px solid var(--color-accent);
  padding-bottom: 4px;
}

/* Hero */

.hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: #fff;
  padding: 72px 0;
}

.hero .container {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 40px;
  align-items: center;
}

.hero h1 {
  font-size: 2.3rem;
  line-height: 1.25;
  margin: 0 0 18px;
}

.hero p {
  font-size: 1.1rem;
  color: #e4edf3;
  margin-bottom: 28px;
  max-width: 46ch;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-card {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: var(--radius);
  padding: 26px;
}

.hero-card h2 {
  font-size: 1.05rem;
  margin-top: 0;
  color: #fff;
}

.hero-card ul {
  margin: 0;
  padding-left: 20px;
  color: #e4edf3;
}

.hero-card li {
  margin-bottom: 8px;
}

/* Buttons */

.btn {
  display: inline-block;
  padding: 13px 26px;
  border-radius: 6px;
  font-weight: 700;
  font-size: 0.95rem;
  text-decoration: none;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.btn:hover {
  text-decoration: none;
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--color-accent);
  color: #24170a;
}

.btn-outline {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.6);
  color: #fff;
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.12);
}

/* Sections */

section {
  padding: 64px 0;
}

.section-alt {
  background: var(--color-bg-alt);
}

.section-header {
  max-width: 640px;
  margin: 0 auto 40px;
  text-align: center;
}

.section-header .eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--color-accent);
}

.section-header h2 {
  font-size: 1.9rem;
  margin: 8px 0 12px;
  color: var(--color-primary-dark);
}

.section-header p {
  color: var(--color-text-muted);
}

/* Service cards */

.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.service-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 30px;
  box-shadow: 0 2px 10px rgba(11, 61, 92, 0.05);
}

.service-card .icon {
  width: 46px;
  height: 46px;
  border-radius: 10px;
  background: var(--color-bg-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 16px;
}

.service-card h3 {
  margin: 0 0 10px;
  color: var(--color-primary-dark);
  font-size: 1.2rem;
}

.service-card p {
  color: var(--color-text-muted);
  margin-bottom: 12px;
}

.service-card ul {
  color: var(--color-text-muted);
  padding-left: 20px;
  margin: 0;
}

.service-card li {
  margin-bottom: 6px;
}

.service-card.wide {
  grid-column: 1 / -1;
}

/* Process steps */

.steps {
  counter-reset: step;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.step {
  position: relative;
  padding: 28px 20px 20px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

.step::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  top: -16px;
  left: 20px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--color-accent);
  color: #24170a;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.step h3 {
  margin: 10px 0 8px;
  font-size: 1.05rem;
  color: var(--color-primary-dark);
}

.step p {
  color: var(--color-text-muted);
  font-size: 0.92rem;
  margin: 0;
}

/* Two-col / about */

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}

.about-grid h2 {
  color: var(--color-primary-dark);
  font-size: 1.7rem;
  margin-top: 0;
}

.credentials {
  list-style: none;
  padding: 0;
  margin: 20px 0 0;
}

.credentials li {
  padding: 10px 0;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-muted);
}

.credentials li:last-child {
  border-bottom: none;
}

.credentials strong {
  color: var(--color-text);
}

/* Contact */

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.contact-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 32px;
}

.contact-card h3 {
  margin-top: 0;
  color: var(--color-primary-dark);
}

.contact-list {
  list-style: none;
  padding: 0;
  margin: 18px 0 0;
}

.contact-list li {
  margin-bottom: 12px;
  color: var(--color-text-muted);
}

.contact-list a {
  font-weight: 600;
}

.note-box {
  background: var(--color-bg-alt);
  border-left: 4px solid var(--color-accent);
  border-radius: 6px;
  padding: 20px 22px;
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

/* Footer */

.site-footer {
  background: var(--color-primary-dark);
  color: #cfe0ea;
  padding: 40px 0 24px;
  font-size: 0.9rem;
}

.footer-grid {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
  margin-bottom: 20px;
}

.footer-grid nav ul {
  list-style: none;
  display: flex;
  gap: 20px;
  padding: 0;
  margin: 0;
  flex-wrap: wrap;
}

.footer-grid a {
  color: #cfe0ea;
}

.footer-bottom {
  color: #8faabb;
  font-size: 0.82rem;
}

/* Legal pages */

.legal-content {
  max-width: 760px;
  margin: 0 auto;
}

.legal-content h1 {
  color: var(--color-primary-dark);
}

.legal-content h2 {
  color: var(--color-primary-dark);
  font-size: 1.2rem;
  margin-top: 34px;
}

.legal-content p,
.legal-content li {
  color: var(--color-text-muted);
}

/* Responsive */

@media (max-width: 880px) {
  .hero .container,
  .about-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .services-grid {
    grid-template-columns: 1fr;
  }

  .steps {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .nav-toggle {
    display: inline-block;
  }

  .main-nav {
    display: none;
    width: 100%;
  }

  .main-nav.open {
    display: block;
  }

  .site-header .container {
    flex-wrap: wrap;
  }

  .main-nav ul {
    flex-direction: column;
    gap: 4px;
    padding: 16px 0;
  }

  .main-nav a {
    display: block;
    padding: 10px 0;
  }

  .steps {
    grid-template-columns: 1fr;
  }

  .hero h1 {
    font-size: 1.8rem;
  }
}