:root {
  /* Colors */
  --primary-color: #0a192f; /* Dark Blue/Black */
  --secondary-color: #112240; /* Slightly lighter for sections */
  --accent-color: #ff6b00; /* Orange for CTA */
  --accent-hover: #e65a00;
  --text-light: #ffffff;
  --text-gray: #8892b0;
  --text-dark: #333333;
  --bg-white: #ffffff;
  --bg-light: #f5f5f5;
  --success-color: #00ff88;

  /* Typography */
  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  
  /* Spacing */
  --container-width: 1200px;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
}

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

body {
  font-family: var(--font-main);
  background-color: var(--bg-white);
  color: var(--text-dark);
  line-height: 1.6;
}

a {
  text-decoration: none;
  color: inherit;
}

ul {
  list-style: none;
}

/* Utilities */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}

.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: 5px;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.3s ease;
  text-align: center;
}

.btn-primary {
  background-color: var(--accent-color);
  color: var(--text-light);
  border: none;
}

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

.btn-outline {
  border: 2px solid var(--accent-color);
  color: var(--accent-color);
}

.section-padding {
  padding: var(--spacing-lg) 0;
}

/* Typography */
h1, h2, h3 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
}

/* Header */
header {
  background-color: var(--primary-color);
  color: var(--text-light);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-light);
}

.logo span {
  color: var(--accent-color);
}

/* Hero Section */
.hero {
  background: linear-gradient(rgba(10, 25, 47, 0.9), rgba(10, 25, 47, 0.8)), url('../images/hero-bg.jpg'); /* Placeholder for image */
  background-size: cover;
  background-position: center;
  color: var(--text-light);
  padding: 4rem 0;
  min-height: 80vh;
  display: flex;
  align-items: center;
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: center;
}

@media (max-width: 768px) {
  .hero-content {
    grid-template-columns: 1fr;
  }
}

.hero-text h1 {
  font-size: 2.5rem; /* Mobile first adjustment later */
}

.hero-text p {
  font-size: 1.2rem;
  color: var(--text-gray);
  margin-bottom: 2rem;
}

/* Form */
.ankauf-form {
  background: var(--bg-white);
  padding: 2rem;
  border-radius: 8px;
  color: var(--text-dark);
  box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

.ankauf-form h3 {
  color: var(--primary-color);
  text-align: center;
  margin-bottom: 1.5rem;
}

.form-group {
  margin-bottom: 1rem;
}

.form-group input, .form-group select {
  width: 100%;
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-size: 1rem;
}

.form-group label {
  display: block;
  margin-bottom: 5px;
  font-weight: 600;
  font-size: 0.9rem;
}

/* Features/Vorteile */
.features {
  background-color: var(--bg-light);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  text-align: center;
}

.feature-card {
  background: var(--bg-white);
  padding: 2rem;
  border-radius: 8px;
  box-shadow: 0 2px 5px rgba(0,0,0,0.05);
  transition: transform 0.3s;
}

.feature-card:hover {
  transform: translateY(-5px);
}

.feature-icon {
  font-size: 2rem;
  color: var(--accent-color);
  margin-bottom: 1rem;
}

/* Trust Section */
.trust-section {
  text-align: center;
  background: var(--primary-color);
  color: var(--text-light);
}

.trust-badges {
  display: flex;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
  margin-top: 2rem;
}

.badge {
  background: rgba(255,255,255,0.1);
  padding: 1rem 2rem;
  border-radius: 4px;
}

/* Content Sections */
.content-text {
  max-width: 800px;
  margin: 0 auto;
}

/* Footer */
footer {
  background-color: #050d1a;
  color: var(--text-gray);
  padding: 3rem 0 1rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-column h4 {
  color: var(--text-light);
  margin-bottom: 1.5rem;
}

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

.footer-column ul li a:hover {
  color: var(--accent-color);
}

.copyright {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(255,255,255,0.1);
}

/* WhatsApp Button */
.whatsapp-float {
  position: fixed;
  width: 60px;
  height: 60px;
  bottom: 20px;
  right: 20px;
  background-color: #25d366;
  color: #FFF;
  border-radius: 50px;
  text-align: center;
  font-size: 30px;
  box-shadow: 2px 2px 3px #999;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s;
}

.whatsapp-float:hover {
  background-color: #20ba5a;
  transform: scale(1.1);
}