/* ===== Variables ===== */
:root {
  --bg-primary: #08080c;
  --bg-secondary: #0f0f14;
  --bg-card: #141419;
  --bg-card-hover: #1a1a22;
  --border: rgba(255, 255, 255, 0.06);
  --border-hover: rgba(255, 255, 255, 0.12);
  --text-primary: #f0f0f5;
  --text-secondary: #9898a8;
  --text-muted: #5c5c6e;
  --accent: #6366f1;
  --accent-light: #818cf8;
  --accent-glow: rgba(99, 102, 241, 0.35);
  --gradient-start: #6366f1;
  --gradient-end: #a855f7;
  --font-body: 'Inter', system-ui, sans-serif;
  --font-display: 'Syne', system-ui, sans-serif;
  --radius: 12px;
  --radius-lg: 20px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --header-height: 72px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  font-family: var(--font-body);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

ul {
  list-style: none;
}

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

/* ===== Utilities ===== */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 120px 0;
}

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 64px;
}

.section-label {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-light);
  margin-bottom: 12px;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 16px;
}

.section-desc {
  color: var(--text-secondary);
  font-size: 1.0625rem;
}

.gradient-text {
  display: block;
  line-height: 1.05;
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
}

.btn-primary {
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  color: white;
  box-shadow: 0 4px 24px var(--accent-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px var(--accent-glow);
}

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

.btn-secondary:hover {
  background: var(--bg-card);
  border-color: var(--text-muted);
}

.btn-full {
  width: 100%;
}

/* ===== Header ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  background: rgba(8, 8, 12, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid transparent;
  transition: var(--transition);
}

.header.scrolled {
  border-bottom-color: var(--border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  font-family: var(--font-display);
  font-size: 1.375rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--text-primary);
  flex-shrink: 0;
}

.logo--footer {
  font-size: 1.5rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav-links a {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  transition: color var(--transition);
}

.nav-links a:hover {
  color: var(--text-primary);
}

.nav-cta {
  padding: 10px 20px !important;
  background: var(--bg-card);
  border: 1px solid var(--border-hover);
  border-radius: var(--radius);
  color: var(--text-primary) !important;
}

.nav-cta:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

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

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

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

.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--header-height);
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black, transparent);
}

.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.4;
}

.hero-glow--1 {
  width: 600px;
  height: 600px;
  background: var(--accent);
  top: -200px;
  right: -100px;
}

.hero-glow--2 {
  width: 400px;
  height: 400px;
  background: #a855f7;
  bottom: -100px;
  left: -100px;
  opacity: 0.25;
}

.hero-content {
  position: relative;
  z-index: 1;
  padding: 80px 24px 120px;
}

.hero-label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: 0.05em;
  margin-bottom: 24px;
  opacity: 0;
  animation: fadeUp 0.8s ease forwards;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 7vw, 4.5rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: 0;
  margin-bottom: 24px;
  opacity: 0;
  animation: fadeUp 0.8s ease 0.1s forwards;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.1875rem);
  color: var(--text-secondary);
  max-width: 560px;
  margin-bottom: 40px;
  line-height: 1.7;
  opacity: 0;
  animation: fadeUp 0.8s ease 0.2s forwards;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 64px;
  opacity: 0;
  animation: fadeUp 0.8s ease 0.3s forwards;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 32px;
  opacity: 0;
  animation: fadeUp 0.8s ease 0.4s forwards;
}

.stat {
  display: flex;
  flex-direction: column;
}

.stat-number {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-primary);
}

.stat-label {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-top: 2px;
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--border-hover);
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===== Services ===== */
.leistungen {
  background: var(--bg-secondary);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}

.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: var(--transition);
  opacity: 0;
  transform: translateY(20px);
}

.service-card.visible {
  opacity: 1;
  transform: translateY(0);
}

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

.service-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(99, 102, 241, 0.12);
  border-radius: var(--radius);
  color: var(--accent-light);
  margin-bottom: 20px;
}

.service-icon svg {
  width: 24px;
  height: 24px;
}

.service-card h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.service-card p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.65;
}

/* ===== Process ===== */
.process-steps {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 32px;
}

.process-step {
  position: relative;
  padding: 32px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  opacity: 0;
  transform: translateY(20px);
  transition: var(--transition);
}

.process-step.visible {
  opacity: 1;
  transform: translateY(0);
}

.process-step:hover {
  border-color: var(--border-hover);
}

.step-number {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  opacity: 0.5;
  display: block;
  margin-bottom: 16px;
}

.process-step h3 {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.process-step p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.65;
}

/* ===== Referenzen ===== */
.referenzen {
  background: var(--bg-secondary);
}

.clients-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
  margin-bottom: 64px;
}

.client-card {
  padding: 32px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: var(--transition);
  opacity: 0;
  transform: translateY(20px);
}

.client-card.visible {
  opacity: 1;
  transform: translateY(0);
}

.client-card:hover {
  border-color: var(--accent);
  box-shadow: 0 0 40px rgba(99, 102, 241, 0.08);
}

.client-type {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--accent-light);
}

.client-card p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.65;
}

.testimonial {
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
  padding: 48px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  opacity: 0;
  transform: translateY(20px);
  transition: var(--transition);
}

.testimonial.visible {
  opacity: 1;
  transform: translateY(0);
}

.testimonial p {
  font-size: 1.25rem;
  font-style: italic;
  color: var(--text-primary);
  line-height: 1.7;
  margin-bottom: 20px;
}

.testimonial cite {
  font-style: normal;
  color: var(--text-muted);
  font-size: 0.9375rem;
}

/* ===== Kontakt ===== */
.kontakt-content {
  text-align: center;
  max-width: 560px;
  margin: 0 auto;
}

.kontakt-content .section-desc {
  margin-bottom: 40px;
}

.kontakt-email {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  padding: 18px 32px;
  background: var(--bg-card);
  border: 1px solid var(--border-hover);
  border-radius: var(--radius-lg);
  color: var(--accent-light);
  font-size: 1.125rem;
  font-weight: 600;
  transition: var(--transition);
}

.kontakt-email:hover {
  color: var(--text-primary);
  border-color: var(--accent);
  box-shadow: 0 0 40px rgba(99, 102, 241, 0.12);
  transform: translateY(-2px);
}

.kontakt-email svg {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
}

/* ===== Footer ===== */
.footer {
  padding: 64px 0 32px;
  border-top: 1px solid var(--border);
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 20px;
}

.footer-tagline {
  color: var(--text-muted);
  font-size: 0.9375rem;
}

.footer-nav {
  display: flex;
  gap: 32px;
}

.footer-nav a {
  font-size: 0.875rem;
  color: var(--text-secondary);
  transition: color var(--transition);
}

.footer-nav a:hover {
  color: var(--text-primary);
}

.footer-copy {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-top: 12px;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .section {
    padding: 80px 0;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: rgba(8, 8, 12, 0.98);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    padding: 16px 24px 24px;
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
  }

  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-links li {
    width: 100%;
  }

  .nav-links a {
    display: block;
    padding: 14px 0;
    border-bottom: 1px solid var(--border);
  }

  .nav-cta {
    margin-top: 8px;
    text-align: center;
    border-bottom: none !important;
  }

  .hero-stats {
    flex-wrap: wrap;
    gap: 24px;
  }

  .stat-divider {
    display: none;
  }

  .footer-nav {
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px 24px;
  }
}

@media (max-width: 480px) {
  .hero-actions {
    flex-direction: column;
  }

  .hero-actions .btn {
    width: 100%;
  }

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