/* ==========================================
   Wolfenbüttel IT Services - Main Stylesheet
   Graham Miranda UG (haftungsbeschränkt)
   ========================================== */

/* CSS Variables */
:root {
  --primary: #1e3a5f;
  --primary-light: #2d5a8a;
  --secondary: #e67e22;
  --accent: #3498db;
  --dark: #0d1b2a;
  --light: #f8f9fa;
  --gray: #6c757d;
  --gray-light: #e9ecef;
  --white: #ffffff;
  --shadow: 0 4px 6px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 25px rgba(0,0,0,0.15);
  --radius: 8px;
  --transition: all 0.3s ease;
}

/* Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, Roboto, Oxygen, Ubuntu, sans-serif;
  line-height: 1.6;
  color: var(--dark);
  background: var(--white);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
  color: var(--primary);
}

h1 { font-size: clamp(2rem, 5vw, 3rem); }
h2 { font-size: clamp(1.5rem, 4vw, 2.25rem); }
h3 { font-size: clamp(1.25rem, 3vw, 1.75rem); }
h4 { font-size: 1.25rem; }

p {
  margin-bottom: 1rem;
  color: var(--gray);
}

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

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

/* Container */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header & Navigation */
.header {
  background: var(--white);
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.5rem;
  max-width: 1200px;
  margin: 0 auto;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-weight: 700;
  font-size: 1.25rem;
}

.logo-text {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary);
}

.logo-tagline {
  font-size: 0.7rem;
  color: var(--gray);
  display: block;
  margin-top: -0.25rem;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--primary);
  margin: 5px 0;
  transition: var(--transition);
}

.nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

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

.nav-list a {
  color: var(--dark);
  font-weight: 500;
  padding: 0.5rem 0;
  position: relative;
}

.nav-list a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--secondary);
  transition: var(--transition);
}

.nav-list a:hover::after,
.nav-list a.active::after {
  width: 100%;
}

.nav-list a:hover,
.nav-list a.active {
  color: var(--primary);
}

.lang-switch {
  display: flex;
  gap: 0.5rem;
  padding-left: 1rem;
  border-left: 1px solid var(--gray-light);
}

.lang-switch a {
  padding: 0.25rem 0.75rem;
  border-radius: 4px;
  font-size: 0.875rem;
  font-weight: 500;
  background: var(--gray-light);
  color: var(--dark);
}

.lang-switch a.active {
  background: var(--primary);
  color: var(--white);
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, var(--primary) 0%, var(--dark) 100%);
  color: var(--white);
  padding: 5rem 0;
  text-align: center;
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
}

.hero h1 {
  color: var(--white);
  margin-bottom: 1.5rem;
}

.hero p {
  color: rgba(255,255,255,0.9);
  font-size: 1.25rem;
  margin-bottom: 2rem;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.875rem 2rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 1rem;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  border: 2px solid transparent;
}

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

.btn-primary:hover {
  background: #d35400;
  border-color: #d35400;
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

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

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

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

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

/* Sections */
.section {
  padding: 4rem 0;
}

.section-gray {
  background: var(--light);
}

.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-header p {
  max-width: 600px;
  margin: 0 auto;
}

/* Services Grid */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.service-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow);
  transition: var(--transition);
  border: 1px solid var(--gray-light);
}

.service-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.service-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  color: var(--white);
  font-size: 1.5rem;
}

.service-card h3 {
  margin-bottom: 1rem;
  font-size: 1.25rem;
}

.service-card p {
  font-size: 0.95rem;
  margin-bottom: 0;
}

/* Stats */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  text-align: center;
}

.stat-item {
  padding: 2rem;
}

.stat-number {
  font-size: 3rem;
  font-weight: 700;
  color: var(--primary);
  display: block;
  line-height: 1;
}

.stat-label {
  color: var(--gray);
  margin-top: 0.5rem;
  display: block;
}

/* About Section */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.about-image {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: var(--radius);
  height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 4rem;
}

/* Blog */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.blog-card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.blog-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.blog-image {
  height: 200px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 3rem;
}

.blog-content {
  padding: 1.5rem;
}

.blog-meta {
  font-size: 0.875rem;
  color: var(--gray);
  margin-bottom: 0.75rem;
}

.blog-card h3 {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
}

.blog-card p {
  font-size: 0.95rem;
  margin-bottom: 1rem;
}

.read-more {
  color: var(--secondary);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

/* Blog Article */
.article {
  max-width: 800px;
  margin: 0 auto;
  padding: 3rem 1.5rem;
}

.article-header {
  margin-bottom: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--gray-light);
}

.article-meta {
  color: var(--gray);
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

.article h1 {
  margin-bottom: 1rem;
}

.article-content {
  font-size: 1.1rem;
  line-height: 1.8;
}

.article-content h2 {
  margin-top: 2rem;
  margin-bottom: 1rem;
}

.article-content h3 {
  margin-top: 1.5rem;
  margin-bottom: 0.75rem;
}

.article-content p {
  margin-bottom: 1.5rem;
  color: var(--dark);
}

.article-content ul, .article-content ol {
  margin-bottom: 1.5rem;
  padding-left: 1.5rem;
}

.article-content li {
  margin-bottom: 0.5rem;
  color: var(--dark);
}

/* Contact Info */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.contact-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 2rem;
  text-align: center;
  box-shadow: var(--shadow);
  border: 1px solid var(--gray-light);
}

.contact-card i {
  font-size: 2.5rem;
  color: var(--primary);
  margin-bottom: 1rem;
  display: block;
}

.contact-card h3 {
  margin-bottom: 0.5rem;
  font-size: 1.1rem;
}

.contact-card p {
  margin-bottom: 0;
}

.contact-card a {
  color: var(--accent);
  font-weight: 500;
}

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

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand p {
  color: rgba(255,255,255,0.7);
  margin-top: 1rem;
  font-size: 0.95rem;
}

.footer h4 {
  color: var(--white);
  font-size: 1rem;
  margin-bottom: 1.25rem;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.75rem;
}

.footer-links a {
  color: rgba(255,255,255,0.7);
  font-size: 0.95rem;
}

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

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid rgba(255,255,255,0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-bottom p {
  color: rgba(255,255,255,0.6);
  font-size: 0.875rem;
  margin: 0;
}

.footer-legal {
  display: flex;
  gap: 1.5rem;
}

.footer-legal a {
  color: rgba(255,255,255,0.6);
  font-size: 0.875rem;
}

/* Backlinks Section */
.backlinks {
  background: var(--light);
  padding: 3rem 0;
  border-top: 1px solid var(--gray-light);
}

.backlinks h3 {
  text-align: center;
  margin-bottom: 2rem;
  font-size: 1.25rem;
}

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

.backlink-item {
  background: var(--white);
  padding: 1rem;
  border-radius: var(--radius);
  text-align: center;
  border: 1px solid var(--gray-light);
  transition: var(--transition);
}

.backlink-item:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.backlink-item a {
  color: var(--primary);
  font-weight: 500;
  font-size: 0.9rem;
  word-break: break-all;
}

/* Breadcrumbs */
.breadcrumbs {
  padding: 1rem 0;
  background: var(--light);
  border-bottom: 1px solid var(--gray-light);
}

.breadcrumbs ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0.9rem;
}

.breadcrumbs li {
  color: var(--gray);
}

.breadcrumbs li:not(:last-child)::after {
  content: '/';
  margin-left: 0.5rem;
  color: var(--gray-light);
}

.breadcrumbs a {
  color: var(--accent);
}

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

/* Page Header */
.page-header {
  background: linear-gradient(135deg, var(--primary) 0%, var(--dark) 100%);
  color: var(--white);
  padding: 4rem 0;
  text-align: center;
}

.page-header h1 {
  color: var(--white);
  margin-bottom: 0.5rem;
}

.page-header p {
  color: rgba(255,255,255,0.8);
  font-size: 1.1rem;
  margin: 0;
}

/* Features List */
.features-list {
  list-style: none;
  padding: 0;
}

.features-list li {
  padding: 0.75rem 0;
  padding-left: 2rem;
  position: relative;
  color: var(--dark);
  border-bottom: 1px solid var(--gray-light);
}

.features-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--secondary);
  font-weight: 700;
}

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

/* Pricing */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.pricing-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow);
  border: 2px solid var(--gray-light);
  text-align: center;
  transition: var(--transition);
}

.pricing-card.featured {
  border-color: var(--secondary);
  position: relative;
}

.pricing-card.featured::before {
  content: 'Popular';
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--secondary);
  color: var(--white);
  padding: 0.25rem 1rem;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
}

.pricing-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.pricing-card h3 {
  margin-bottom: 0.5rem;
}

.pricing-price {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 0.5rem;
}

.pricing-price span {
  font-size: 1rem;
  font-weight: 400;
  color: var(--gray);
}

.pricing-desc {
  color: var(--gray);
  margin-bottom: 1.5rem;
  font-size: 0.95rem;
}

.pricing-features {
  list-style: none;
  margin-bottom: 2rem;
  text-align: left;
}

.pricing-features li {
  padding: 0.5rem 0;
  color: var(--dark);
  font-size: 0.95rem;
}

.pricing-features li::before {
  content: '✓';
  color: var(--secondary);
  margin-right: 0.5rem;
  font-weight: 600;
}

/* CTA Section */
.cta-section {
  background: linear-gradient(135deg, var(--secondary), #d35400);
  color: var(--white);
  padding: 4rem 0;
  text-align: center;
}

.cta-section h2 {
  color: var(--white);
  margin-bottom: 1rem;
}

.cta-section p {
  color: rgba(255,255,255,0.9);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto 2rem;
}

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

.cta-section .btn:hover {
  background: var(--dark);
  color: var(--white);
  border-color: var(--dark);
}

/* Legal Pages */
.legal-content {
  max-width: 800px;
  margin: 0 auto;
  padding: 3rem 1.5rem;
}

.legal-content h1 {
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 2px solid var(--gray-light);
}

.legal-content h2 {
  margin-top: 2rem;
  margin-bottom: 1rem;
  font-size: 1.5rem;
}

.legal-content p {
  margin-bottom: 1rem;
  color: var(--dark);
}

.legal-content ul {
  margin-bottom: 1rem;
  padding-left: 1.5rem;
}

.legal-content li {
  margin-bottom: 0.5rem;
  color: var(--dark);
}

/* Mobile Navigation */
@media (max-width: 768px) {
  .nav-toggle {
    display: block;
  }
  
  .nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--white);
    flex-direction: column;
    align-items: flex-start;
    padding: 5rem 1.5rem 2rem;
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
    z-index: 1001;
  }
  
  .nav.active {
    right: 0;
  }
  
  .nav-list {
    flex-direction: column;
    width: 100%;
    gap: 0;
  }
  
  .nav-list li {
    width: 100%;
  }
  
  .nav-list a {
    display: block;
    padding: 1rem 0;
    border-bottom: 1px solid var(--gray-light);
  }
  
  .lang-switch {
    border-left: none;
    padding-left: 0;
    padding-top: 1rem;
    margin-top: 1rem;
    border-top: 1px solid var(--gray-light);
    width: 100%;
  }
  
  .nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 1000;
  }
  
  .nav-overlay.active {
    opacity: 1;
    visibility: visible;
  }
  
  /* Hero adjustments */
  .hero {
    padding: 3rem 0;
  }
  
  .hero h1 {
    font-size: 2rem;
  }
  
  .hero p {
    font-size: 1rem;
  }
  
  /* About grid */
  .about-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .about-image {
    height: 250px;
  }
  
  /* Footer */
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  
  /* Section padding */
  .section {
    padding: 3rem 0;
  }
}

/* Utility Classes */
.text-center { text-align: center; }
.mb-0 { margin-bottom: 0; }
.mt-2 { margin-top: 2rem; }
.mt-4 { margin-top: 4rem; }

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.fade-in {
  animation: fadeIn 0.6s ease forwards;
}

/* Scroll to top */
.scroll-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 45px;
  height: 45px;
  background: var(--primary);
  color: var(--white);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 999;
}

.scroll-top.visible {
  opacity: 1;
  visibility: visible;
}

.scroll-top:hover {
  background: var(--secondary);
  transform: translateY(-3px);
}