:root {
  /* Elegante Farbpalette - Premium Tech Theme */
  --color-primary: #6366f1;
  --color-primary-dark: #4f46e5;
  --color-primary-light: #818cf8;
  --color-secondary: #8b5cf6;
  --color-accent: #06b6d4;
  --color-accent-light: #22d3ee;
  
  /* Neutrale Farben - Elegant & Minimalistisch */
  --color-bg: #0a0a0f;
  --color-bg-light: #111118;
  --color-bg-card: #1a1a24;
  --color-bg-card-hover: #222230;
  --color-text: #e4e4e7;
  --color-text-light: #a1a1aa;
  --color-text-muted: #71717a;
  
  /* Borders */
  --border-color: rgba(99, 102, 241, 0.15);
  --border-color-hover: rgba(99, 102, 241, 0.4);
  
  /* Spacing - Premium Spacing System */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;
  --spacing-2xl: 8rem;
  
  /* Typography - Elegant Font System */
  --font-family: 'Open Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 3rem;
  --font-size-5xl: 4rem;
  --font-size-6xl: 5rem;
  
  /* Effects - Subtle & Professional */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.6);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.7);
  --glow-primary: 0 0 30px rgba(99, 102, 241, 0.3);
  --glow-accent: 0 0 30px rgba(6, 182, 212, 0.3);
  
  /* Transitions - Smooth & Professional */
  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
  font-family: var(--font-family);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* Navigation - Elegant & Minimal */
.main-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 10, 15, 0.7);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--border-color);
  transition: all var(--transition-base);
}

.main-nav.scrolled {
  background: rgba(10, 10, 15, 0.95);
  border-bottom-color: var(--border-color-hover);
  box-shadow: var(--shadow-md);
}

.nav-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 1.25rem var(--spacing-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-md);
}

.logo {
  font-size: var(--font-size-xl);
  font-weight: 700;
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-decoration: none;
}

.split-nav {
  display: flex;
  gap: 0.25rem;
  background: rgba(26, 26, 36, 0.6);
  padding: 0.375rem;
  border-radius: 10px;
  border: 1px solid var(--border-color);
  backdrop-filter: blur(10px);
}

.nav-split-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0.625rem 1.25rem;
  text-decoration: none;
  color: var(--color-text);
  border-radius: 8px;
  transition: all var(--transition-base);
  min-width: 150px;
  position: relative;
}

.nav-split-item .nav-label {
  font-size: var(--font-size-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 0.125rem;
}

.nav-split-item .nav-domain {
  font-size: 0.65rem;
  opacity: 0.5;
  font-weight: 400;
  letter-spacing: 0.5px;
}

.nav-split-item.active {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: white;
  box-shadow: var(--glow-primary);
}

.nav-split-item.active .nav-domain {
  opacity: 0.9;
}

.nav-split-item:hover:not(.active) {
  background: rgba(99, 102, 241, 0.15);
  color: var(--color-primary-light);
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--spacing-md);
}

.nav-menu a {
  color: var(--color-text-light);
  text-decoration: none;
  font-weight: 500;
  font-size: var(--font-size-sm);
  letter-spacing: 0.3px;
  transition: color var(--transition-base);
  position: relative;
}

.nav-menu a::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  transition: width var(--transition-base);
}

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

.nav-menu a:hover,
.nav-menu a.active {
  color: var(--color-text);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  z-index: 1001;
}

.mobile-menu-toggle span {
  width: 24px;
  height: 2px;
  background: var(--color-text);
  transition: all var(--transition-base);
  border-radius: 2px;
}

.mobile-menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

.mobile-menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

@media (max-width: 968px) {
  .nav-container {
    flex-wrap: wrap;
  }
  .split-nav {
    order: 3;
    width: 100%;
    margin-top: 1rem;
    padding: 0.25rem;
  }
  .nav-split-item {
    min-width: 140px;
    padding: 0.5rem 0.875rem;
  }
  .nav-split-item .nav-label {
    font-size: 0.7rem;
  }
  .nav-split-item .nav-domain {
    font-size: 0.6rem;
  }
  .nav-menu {
    gap: var(--spacing-sm);
  }
}

@media (max-width: 768px) {
  .mobile-menu-toggle {
    display: flex;
  }
  
  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--color-bg-card);
    border-left: 1px solid var(--border-color);
    flex-direction: column;
    padding: 5rem 2rem 2rem;
    gap: var(--spacing-md);
    transition: right var(--transition-base);
    z-index: 1000;
    box-shadow: var(--shadow-xl);
  }
  
  .nav-menu.active {
    right: 0;
  }
  
  .nav-menu li {
    width: 100%;
  }
  
  .nav-menu a {
    display: block;
    padding: 0.75rem 0;
    font-size: var(--font-size-base);
    border-bottom: 1px solid var(--border-color);
  }
  
  .nav-menu a::after {
    display: none;
  }
  
  .split-nav {
    order: 2;
    width: auto;
    margin-top: 0;
    margin-left: auto;
    margin-right: 1rem;
  }
  
  .nav-split-item {
    min-width: 110px;
    padding: 0.4rem 0.75rem;
  }
  
  .nav-split-item .nav-label {
    font-size: 0.65rem;
    letter-spacing: 0.5px;
  }
  
  .nav-split-item .nav-domain {
    font-size: 0.55rem;
  }
  
  .nav-container {
    padding: 1rem var(--spacing-sm);
  }
}

@media (max-width: 640px) {
  .split-nav {
    margin-right: 0.5rem;
  }
  
  .nav-split-item {
    min-width: 100px;
    padding: 0.35rem 0.6rem;
  }
  
  .nav-split-item .nav-label {
    font-size: 0.6rem;
  }
  
  .nav-split-item .nav-domain {
    font-size: 0.5rem;
  }
}

/* Hero Section - Premium & Elegant */
.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding-top: 100px;
  padding-bottom: var(--spacing-xl);
}

@media (max-width: 768px) {
  .hero-section {
    padding-top: 140px;
    min-height: calc(100vh - 40px);
  }
}

.hero-background {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1;
}

#particle-canvas {
  width: 100%;
  height: 100%;
  opacity: 0.4;
}

.gradient-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(ellipse at center, rgba(99, 102, 241, 0.1) 0%, transparent 70%);
  z-index: 2;
}

.hero-content {
  position: relative;
  z-index: 3;
  text-align: center;
  max-width: 900px;
  padding: var(--spacing-lg);
  animation: fadeInUp 1s ease;
}

.hero-badge {
  display: inline-block;
  padding: 0.5rem 1.25rem;
  background: rgba(99, 102, 241, 0.15);
  border: 1px solid var(--border-color-hover);
  border-radius: 50px;
  font-size: var(--font-size-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: var(--spacing-md);
  color: var(--color-primary-light);
}

.hero-title {
  font-size: clamp(3rem, 8vw, 6rem);
  font-weight: 800;
  line-height: 1.05;
  margin-bottom: var(--spacing-md);
  letter-spacing: -2px;
}

.title-line {
  display: block;
  animation: fadeInUp 0.8s ease forwards;
  opacity: 0;
}

.title-line:nth-child(1) {
  animation-delay: 0.2s;
}

.title-line:nth-child(2) {
  animation-delay: 0.4s;
}

.title-line:nth-child(3) {
  animation-delay: 0.6s;
}

.title-line.highlight {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--color-text-light);
  margin-bottom: var(--spacing-lg);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.8;
  animation: fadeInUp 0.8s ease 0.8s forwards;
  opacity: 0;
  font-weight: 400;
}

.hero-cta {
  display: flex;
  gap: var(--spacing-sm);
  justify-content: center;
  margin-bottom: var(--spacing-xl);
  flex-wrap: wrap;
  animation: fadeInUp 0.8s ease 1s forwards;
  opacity: 0;
}

.btn {
  display: inline-block;
  padding: 1rem 2.5rem;
  border-radius: 8px;
  font-weight: 600;
  text-decoration: none;
  transition: all var(--transition-base);
  border: none;
  cursor: pointer;
  font-size: var(--font-size-base);
  letter-spacing: 0.3px;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: white;
  box-shadow: var(--glow-primary);
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s;
}

.btn-primary:hover::before {
  left: 100%;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 40px rgba(99, 102, 241, 0.5);
}

.btn-secondary {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--border-color-hover);
}

.btn-secondary:hover {
  background: rgba(99, 102, 241, 0.1);
  border-color: var(--color-primary);
  color: var(--color-primary-light);
  transform: translateY(-2px);
}

.hero-stats {
  display: flex;
  gap: var(--spacing-xl);
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 0.8s ease 1.2s forwards;
  opacity: 0;
}

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

.stat-number {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -1px;
}

.stat-label {
  font-size: var(--font-size-xs);
  color: var(--color-text-light);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-top: 0.5rem;
  font-weight: 500;
}

.scroll-indicator {
  position: absolute;
  bottom: 3rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  animation: bounce 2s infinite;
}

.mouse {
  width: 24px;
  height: 40px;
  border: 1.5px solid var(--border-color-hover);
  border-radius: 20px;
  position: relative;
}

.mouse::before {
  content: '';
  position: absolute;
  top: 10px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 8px;
  background: var(--color-primary);
  border-radius: 2px;
  animation: scroll 2s infinite;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% {
    transform: translateX(-50%) translateY(0);
  }
  40% {
    transform: translateX(-50%) translateY(-10px);
  }
  60% {
    transform: translateX(-50%) translateY(-5px);
  }
}

@keyframes scroll {
  0% {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
  100% {
    opacity: 0;
    transform: translateX(-50%) translateY(15px);
  }
}

/* Services Section - Premium Cards */
.services-section {
  padding: var(--spacing-2xl) 0;
  background: var(--color-bg-light);
  position: relative;
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.section-badge {
  display: inline-block;
  padding: 0.5rem 1.25rem;
  background: rgba(99, 102, 241, 0.15);
  border: 1px solid var(--border-color-hover);
  border-radius: 50px;
  font-size: var(--font-size-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--color-primary-light);
  margin-bottom: var(--spacing-sm);
}

.section-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  margin-bottom: var(--spacing-sm);
  letter-spacing: -1.5px;
  background: linear-gradient(135deg, var(--color-text), var(--color-primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-description {
  font-size: var(--font-size-lg);
  color: var(--color-text-light);
  max-width: 700px;
  margin: 0 auto;
  line-height: 1.8;
  font-weight: 400;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-xl);
}

.service-card {
  background: var(--color-bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: var(--spacing-md);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

.service-card:hover::before {
  transform: scaleX(1);
}

.service-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-color-hover);
  background: var(--color-bg-card-hover);
  box-shadow: var(--shadow-lg);
}

.service-number {
  font-size: var(--font-size-3xl);
  font-weight: 800;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  opacity: 0.3;
  margin-bottom: var(--spacing-sm);
  letter-spacing: -2px;
}

.service-card h3 {
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  color: var(--color-text);
  letter-spacing: -0.5px;
}

.service-card p {
  color: var(--color-text-light);
  margin-bottom: var(--spacing-sm);
  line-height: 1.8;
  font-weight: 400;
}

.service-features {
  list-style: none;
  margin-top: var(--spacing-sm);
}

.service-features li {
  padding: 0.625rem 0;
  color: var(--color-text-light);
  position: relative;
  padding-left: 1.75rem;
  font-size: var(--font-size-sm);
  line-height: 1.6;
}

.service-features li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 1.1rem;
  width: 6px;
  height: 6px;
  background: var(--color-primary);
  border-radius: 50%;
  transform: translateY(-50%);
}

/* Tech Section */
.tech-section {
  padding: var(--spacing-2xl) 0;
  background: var(--color-bg);
}

.tech-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-xl);
}

.tech-category {
  background: var(--color-bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: var(--spacing-md);
  transition: all var(--transition-base);
}

.tech-category:hover {
  border-color: var(--border-color-hover);
  background: var(--color-bg-card-hover);
}

.tech-category h3 {
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  color: var(--color-primary-light);
  letter-spacing: -0.5px;
}

.tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tech-tag {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  font-size: var(--font-size-sm);
  color: var(--color-primary-light);
  transition: all var(--transition-base);
  font-weight: 500;
}

.tech-tag:hover {
  background: rgba(99, 102, 241, 0.2);
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

/* Contact Section */
.contact-section {
  padding: var(--spacing-2xl) 0;
  background: var(--color-bg-light);
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
  margin-top: var(--spacing-xl);
}

.contact-column {
  background: var(--color-bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: var(--spacing-md);
  transition: all var(--transition-base);
}

.contact-column:hover {
  border-color: var(--border-color-hover);
  box-shadow: var(--shadow-md);
}

.contact-column h3 {
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  color: var(--color-text);
  letter-spacing: -0.5px;
}

.contact-column p {
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: var(--spacing-sm);
  font-weight: 400;
}

.contact-details {
  margin-top: var(--spacing-md);
}

.contact-item {
  margin-bottom: var(--spacing-md);
}

.contact-label {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--color-text-muted);
  margin-bottom: 0.5rem;
  font-weight: 600;
}

.contact-value {
  color: var(--color-primary-light);
  text-decoration: none;
  font-size: var(--font-size-base);
  transition: color var(--transition-base);
  display: block;
}

.contact-value:hover {
  color: var(--color-primary);
}

.contact-column .btn {
  margin-top: var(--spacing-md);
  display: inline-block;
}

/* Footer */
.footer {
  background: var(--color-bg);
  border-top: 1px solid var(--border-color);
  padding: var(--spacing-lg) 0;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-md);
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.footer-brand h3 {
  font-size: var(--font-size-xl);
  margin-bottom: 0.5rem;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.5px;
}

.footer-brand p {
  color: var(--color-text-light);
  font-size: var(--font-size-sm);
}

.footer-links {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--color-text-light);
  text-decoration: none;
  font-size: var(--font-size-sm);
  transition: color var(--transition-base);
}

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

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--border-color);
  color: var(--color-text-muted);
  font-size: var(--font-size-xs);
}

@media (max-width: 768px) {
  .contact-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
  
  .services-grid {
    grid-template-columns: 1fr;
  }
  
  .tech-grid {
    grid-template-columns: 1fr;
  }
  
  .hero-title {
    font-size: 3rem;
  }
  
  .section-title {
    font-size: 2.5rem;
  }
  
  .hero-stats {
    gap: var(--spacing-md);
  }
}