:root {
  --primary-color: #C3A981; /* Beige aus dem Logo */
  --secondary-color: #2E3238; /* Dunkelgrau/Anthrazit aus dem Logo */
  --text-color: #333333;
  --light-bg: #f8f9fa;
  --white: #ffffff;
  --transition: all 0.3s ease;
  --border-radius: 8px;
  --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Inter', 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
  color: var(--text-color);
  background-color: var(--white);
  overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  color: var(--secondary-color);
  margin-bottom: 1rem;
  font-weight: 700;
}

h1 {
  font-size: 2.5rem;
  line-height: 1.2;
}

h2 {
  font-size: 2rem;
  position: relative;
  padding-bottom: 0.5rem;
}

h2::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 60px;
  height: 3px;
  background-color: var(--primary-color);
}

p {
  margin-bottom: 1rem;
}

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

a:hover {
  color: var(--secondary-color);
}

/* Layout Classes */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.section {
  padding: 5rem 0;
}

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

.text-center {
  text-align: center;
}

.text-center h2::after {
  left: 50%;
  transform: translateX(-50%);
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: var(--border-radius);
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  border: 2px solid transparent;
}

.btn-primary {
  background-color: var(--primary-color);
  color: var(--white);
}

.btn-primary:hover {
  background-color: transparent;
  color: var(--primary-color);
  border-color: var(--primary-color);
}

.btn-secondary {
  background-color: var(--secondary-color);
  color: var(--white);
}

.btn-secondary:hover {
  background-color: transparent;
  color: var(--secondary-color);
  border-color: var(--secondary-color);
}

/* Header & Navigation */
header {
  background-color: var(--white);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
}

.logo img {
  max-height: 50px;
  width: auto;
}

nav ul {
  display: flex;
  list-style: none;
  gap: 2rem;
}

nav ul li a {
  color: var(--text-color);
  font-weight: 600;
  position: relative;
}

nav ul li a::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--primary-color);
  transition: var(--transition);
}

nav ul li a:hover::after,
nav ul li a.active::after {
  width: 100%;
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--secondary-color);
  cursor: pointer;
}

/* Hero Section */
.hero {
  background-color: var(--secondary-color);
  color: var(--white);
  padding: 6rem 0;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 50%;
  height: 100%;
  background: linear-gradient(135deg, transparent, rgba(195, 169, 129, 0.2));
  z-index: 1;
}

.hero-content {
  max-width: 600px;
  position: relative;
  z-index: 2;
}

.hero h1 {
  color: var(--white);
}

.hero p {
  font-size: 1.2rem;
  margin-bottom: 2rem;
  opacity: 0.9;
}

/* Features / Services */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.feature-card {
  background: var(--white);
  padding: 2rem;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  transition: var(--transition);
  border-bottom: 4px solid var(--primary-color);
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.feature-icon {
  font-size: 2.5rem;
  color: var(--primary-color);
  margin-bottom: 1rem;
}

/* TRGS 519 Banner */
.trgs-banner {
  background: linear-gradient(135deg, var(--primary-color), #b09670);
  color: var(--white);
  padding: 3rem 0;
  text-align: center;
  border-radius: var(--border-radius);
  margin: 3rem 0;
}

.trgs-banner h3 {
  color: var(--white);
  margin-bottom: 1rem;
}

/* FAQ Accordion */
.faq-container {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--white);
  border: 1px solid #eee;
  border-radius: var(--border-radius);
  margin-bottom: 1rem;
  overflow: hidden;
}

.faq-question {
  padding: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-weight: 600;
  color: var(--secondary-color);
  background: var(--white);
  transition: var(--transition);
}

.faq-question:hover {
  background: var(--light-bg);
}

.faq-icon {
  transition: transform 0.3s ease;
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
}

.faq-answer {
  padding: 0 1.5rem;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-item.active .faq-answer {
  padding: 0 1.5rem 1.5rem 1.5rem;
  max-height: 1000px; /* Arbitrary large number */
}

/* Footer */
footer {
  background-color: var(--secondary-color);
  color: var(--white);
  padding: 4rem 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-col h4 {
  color: var(--primary-color);
  margin-bottom: 1.5rem;
}

.footer-col p, .footer-col ul {
  color: #ccc;
}

.footer-col ul {
  list-style: none;
}

.footer-col ul li {
  margin-bottom: 0.5rem;
}

.footer-col ul li a {
  color: #ccc;
}

.footer-col ul li a:hover {
  color: var(--primary-color);
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: #888;
  font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 768px) {
  .header-inner {
    flex-wrap: wrap;
  }
  
  .mobile-menu-btn {
    display: block;
  }

  nav {
    display: none;
    width: 100%;
    order: 3;
    padding: 1rem 0;
  }

  nav.active {
    display: block;
  }

  nav ul {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
  
  .hero h1 {
    font-size: 2rem;
  }
}