:root {
  --color-primary: #0066FF;
  --color-accent: #FF6B35;
  --color-text: #1a1a2e;
  --color-text-secondary: #4a5568;
  --color-text-tertiary: #718096;
  --color-bg: #F8F9FB;
  --color-white: #FFFFFF;
  --color-border: #E2E8F0;
  --gradient-logo: linear-gradient(135deg, #0066FF 0%, #FF6B35 100%);
  --gradient-bg: linear-gradient(135deg, #F8F9FB 0%, #FFFFFF 50%, #F1F3F7 100%);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SF Mono", Monaco, "Cascadia Code", monospace;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--gradient-bg);
  line-height: 1.6;
  min-height: 100vh;
}

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

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

.font-bold { font-weight: 700; }
.font-semibold { font-weight: 600; }
.font-medium { font-weight: 500; }

.text-sm { font-size: 0.875rem; }
.text-base { font-size: 1rem; }
.text-lg { font-size: 1.125rem; }
.text-xl { font-size: 1.25rem; }
.text-2xl { font-size: 1.5rem; }
.text-3xl { font-size: 1.875rem; }
.text-4xl { font-size: 2.25rem; }
.text-5xl { font-size: 3rem; }

.text-primary { color: var(--color-primary); }
.text-accent { color: var(--color-accent); }
.text-secondary { color: var(--color-text-secondary); }
.text-tertiary { color: var(--color-text-tertiary); }

.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 0.75rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-6 { margin-bottom: 1.5rem; }
.mb-8 { margin-bottom: 2rem; }
.mb-12 { margin-bottom: 3rem; }
.mb-16 { margin-bottom: 4rem; }

.mt-4 { margin-top: 1rem; }
.mt-8 { margin-top: 2rem; }
.mt-12 { margin-top: 3rem; }

.py-4 { padding-top: 1rem; padding-bottom: 1rem; }
.py-8 { padding-top: 2rem; padding-bottom: 2rem; }
.py-12 { padding-top: 3rem; padding-bottom: 3rem; }
.py-16 { padding-top: 4rem; padding-bottom: 4rem; }
.py-20 { padding-top: 5rem; padding-bottom: 5rem; }
.py-24 { padding-top: 6rem; padding-bottom: 6rem; }

.px-4 { padding-left: 1rem; padding-right: 1rem; }
.px-6 { padding-left: 1.5rem; padding-right: 1.5rem; }
.px-8 { padding-left: 2rem; padding-right: 2rem; }

.p-4 { padding: 1rem; }
.p-6 { padding: 1.5rem; }
.p-8 { padding: 2rem; }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: 0.5rem; }
.gap-4 { gap: 1rem; }
.gap-6 { gap: 1.5rem; }
.gap-8 { gap: 2rem; }

.grid { display: grid; }
.grid-cols-1 { grid-template-columns: repeat(1, 1fr); }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid-cols-4 { grid-template-columns: repeat(4, 1fr); }

.w-full { width: 100%; }
.max-w-lg { max-width: 32rem; }
.max-w-xl { max-width: 36rem; }
.max-w-2xl { max-width: 42rem; }
.max-w-3xl { max-width: 48rem; }
.max-w-4xl { max-width: 56rem; }

.mx-auto { margin-left: auto; margin-right: auto; }

.hidden { display: none; }
.block { display: block; }
.inline-block { display: inline-block; }

.relative { position: relative; }
.absolute { position: absolute; }
.fixed { position: fixed; }

.overflow-hidden { overflow: hidden; }

.rounded { border-radius: var(--radius-sm); }
.rounded-md { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-xl { border-radius: var(--radius-xl); }
.rounded-2xl { border-radius: var(--radius-2xl); }
.rounded-full { border-radius: 9999px; }

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

.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }
.shadow-xl { box-shadow: var(--shadow-xl); }

.border { border: 1px solid var(--color-border); }
.border-t { border-top: 1px solid var(--color-border); }
.border-b { border-bottom: 1px solid var(--color-border); }

.opacity-0 { opacity: 0; }
.opacity-50 { opacity: 0.5; }
.opacity-75 { opacity: 0.75; }
.opacity-100 { opacity: 1; }

.transition { transition: all 0.2s ease; }
.transition-all { transition: all 0.3s ease; }

.hover\\:shadow-lg:hover { box-shadow: var(--shadow-lg); }
.hover\\:scale-105:hover { transform: scale(1.05); }
.hover\\:opacity-80:hover { opacity: 0.8; }

@media (min-width: 640px) {
  .sm\\:grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
  .sm\\:flex-row { flex-direction: row; }
  .sm\\:text-left { text-align: left; }
}

@media (min-width: 768px) {
  .md\\:grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
  .md\\:grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
  .md\\:grid-cols-4 { grid-template-columns: repeat(4, 1fr); }
  .md\\:flex-row { flex-direction: row; }
  .md\\:text-5xl { font-size: 3rem; }
  .md\\:text-6xl { font-size: 3.75rem; }
}

@media (min-width: 1024px) {
  .lg\\:grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
  .lg\\:grid-cols-5 { grid-template-columns: repeat(5, 1fr); }
}

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4rem;
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  background: var(--gradient-logo);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-decoration: none;
}

.nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav-link {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.9rem;
  transition: color 0.2s;
}

.nav-link:hover {
  color: var(--color-primary);
}

.lang-dropdown {
  position: relative;
}

.lang-btn {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.5rem 0.75rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  cursor: pointer;
  transition: all 0.2s;
}

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

.lang-menu {
  position: absolute;
  top: calc(100% + 0.5rem);
  right: 0;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  min-width: 120px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all 0.2s;
}

.lang-dropdown.open .lang-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.lang-option {
  display: block;
  width: 100%;
  padding: 0.5rem 1rem;
  text-align: left;
  background: none;
  border: none;
  font-size: 0.875rem;
  cursor: pointer;
  transition: background 0.2s;
}

.lang-option:hover {
  background: var(--color-bg);
}

.lang-option.active {
  color: var(--color-primary);
  font-weight: 600;
}

.hero {
  padding-top: 8rem;
  padding-bottom: 4rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: linear-gradient(135deg, rgba(0, 102, 255, 0.08) 0%, rgba(255, 107, 53, 0.08) 100%);
  border-radius: 50%;
  filter: blur(100px);
  animation: float 20s ease-in-out infinite;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 500px;
  height: 500px;
  background: linear-gradient(135deg, rgba(255, 107, 53, 0.06) 0%, rgba(247, 147, 30, 0.06) 100%);
  border-radius: 50%;
  filter: blur(80px);
  animation: float 15s ease-in-out infinite reverse;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-30px, 30px) scale(1.1); }
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-logo {
  font-size: 3.5rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  background: var(--gradient-logo);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 1rem;
}

.hero-tagline {
  font-size: 1.25rem;
  color: var(--color-text-secondary);
  margin-bottom: 0.5rem;
}

.hero-description {
  font-size: 1rem;
  color: var(--color-text-tertiary);
  max-width: 500px;
  margin: 0 auto 2rem;
}

.app-store-btn {
  display: inline-block;
  transition: transform 0.2s, box-shadow 0.2s;
}

.app-store-btn:hover {
  transform: scale(1.05);
}

.app-store-btn img {
  height: 3rem;
  width: auto;
}

.section {
  padding: 5rem 0;
  position: relative;
}

.section-title {
  font-size: 2rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 1rem;
  color: var(--color-text);
}

.section-subtitle {
  text-align: center;
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto 3rem;
}

/* Device Toggle */
.device-toggle {
  display: flex;
  justify-content: center;
  gap: 0;
  margin-bottom: 2rem;
}

.device-btn {
  padding: 0.5rem 1.5rem;
  border: 1px solid var(--color-border);
  background: var(--color-white);
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.device-btn:first-child {
  border-radius: var(--radius-md) 0 0 var(--radius-md);
}

.device-btn:last-child {
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  border-left: none;
}

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

/* Screenshots Carousel */
.screenshots-carousel {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.screenshots-track {
  display: flex;
  gap: 1.5rem;
  overflow-x: auto;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  padding: 1rem 0;
  flex: 1;
  cursor: grab;
}

.screenshots-track.dragging {
  cursor: grabbing;
  scroll-snap-type: none !important;
  scroll-behavior: auto !important;
  user-select: none;
  -webkit-user-select: none;
}

.screenshots-track img {
  pointer-events: none;
}

.screenshots-track::-webkit-scrollbar {
  display: none;
}

.carousel-arrow {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  background: var(--color-white);
  color: var(--color-text);
  font-size: 1.5rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
  box-shadow: var(--shadow-sm);
}

.carousel-arrow:hover {
  background: var(--color-bg);
  box-shadow: var(--shadow-md);
}

/* Device Mockups */
.device-mockup {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.device-mockup.iphone-mockup {
  width: 220px;
  flex-shrink: 0;
  scroll-snap-align: center;
}

.device-mockup.iphone-mockup .device-screen {
  width: 220px;
  height: 476px;
  background: #1a1a2e;
  border-radius: 40px;
  padding: 12px;
  position: relative;
  box-shadow: var(--shadow-xl);
}

.device-mockup.iphone-mockup .device-screen::before {
  content: '';
  position: absolute;
  top: 12px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 24px;
  background: #000;
  border-radius: 12px;
  z-index: 2;
}

.device-mockup.iphone-mockup .device-screen img {
  border-radius: 30px;
}

.device-mockup.ipad-mockup {
  width: 380px;
  flex-shrink: 0;
  scroll-snap-align: center;
}

.device-mockup.ipad-mockup .device-screen {
  width: 380px;
  height: 507px;
  background: #1a1a2e;
  border-radius: 24px;
  padding: 14px;
  position: relative;
  box-shadow: var(--shadow-xl);
}

.device-mockup.ipad-mockup .device-screen img {
  border-radius: 14px;
}

.device-screen {
  width: 100%;
  height: 100%;
  background: #000;
  border-radius: 30px;
  overflow: hidden;
  position: relative;
}

.device-screen img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
  display: block;
}

.ipad-mockup .device-screen {
  border-radius: 14px;
}

.screenshot-label {
  display: block;
  text-align: center;
  font-size: 0.75rem;
  color: var(--color-text-secondary);
  margin-top: 0.75rem;
  font-weight: 500;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.feature-card {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  padding: 1.5rem;
  border: 1px solid var(--color-border);
  transition: all 0.2s;
}

.feature-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.feature-icon {
  width: 48px;
  height: 48px;
  background: var(--gradient-logo);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
  color: var(--color-white);
  font-size: 1.5rem;
}

.feature-title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--color-text);
}

.feature-description {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.highlights-grid {
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .highlights-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .highlights-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.highlight-card {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  padding: 2rem;
  border: 1px solid var(--color-border);
  text-align: center;
  transition: all 0.2s;
}

.highlight-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.highlight-card.featured {
  background: var(--gradient-logo);
  color: var(--color-white);
  border: none;
}

.highlight-card.featured .highlight-title,
.highlight-card.featured .highlight-description {
  color: var(--color-white);
}

.highlight-icon {
  width: 64px;
  height: 64px;
  background: var(--color-bg);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1rem;
  font-size: 1.75rem;
}

.highlight-card.featured .highlight-icon {
  background: rgba(255, 255, 255, 0.2);
}

.highlight-title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--color-text);
}

.highlight-description {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.faq-section {
  background: var(--color-white);
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--color-border);
}

.faq-question {
  width: 100%;
  padding: 1.5rem 0;
  text-align: left;
  background: none;
  border: none;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: color 0.2s;
}

.faq-question:hover {
  color: var(--color-primary);
}

.faq-icon {
  font-size: 1.5rem;
  transition: transform 0.2s;
}

.faq-item.open .faq-icon {
  transform: rotate(45deg);
}

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

.faq-item.open .faq-answer {
  max-height: 800px;
  padding-bottom: 1.5rem;
}

.cta-section {
  background: linear-gradient(135deg, rgba(0, 102, 255, 0.04) 0%, rgba(255, 107, 53, 0.04) 100%);
}

.faq-answer p {
  color: var(--color-text-secondary);
  line-height: 1.7;
}

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

.impressum-content {
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
}

.impressum-content h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--color-text);
}

.impressum-content p {
  color: var(--color-text-secondary);
  margin-bottom: 1rem;
  line-height: 1.6;
}

.impressum-content a {
  color: var(--color-primary);
  text-decoration: none;
}

.impressum-content a:hover {
  text-decoration: underline;
}

.footer {
  background: var(--color-text);
  color: var(--color-white);
  padding: 3rem 0;
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
  text-align: center;
}

.footer-logo {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  background: var(--gradient-logo);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.footer-links {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
  justify-content: center;
}

.footer-link {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s;
}

.footer-link:hover {
  color: var(--color-white);
}

.footer-copyright {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.5);
}

.mobile-nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--color-text);
}

@media (max-width: 768px) {
  .mobile-nav-toggle {
    display: block;
  }

  .nav {
    position: fixed;
    top: 4rem;
    left: 0;
    right: 0;
    background: var(--color-white);
    flex-direction: column;
    padding: 1.5rem;
    gap: 1rem;
    border-bottom: 1px solid var(--color-border);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
  }

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

  .hero-logo {
    font-size: 2.5rem;
  }

  .hero-tagline {
    font-size: 1rem;
  }

  .carousel-arrow {
    display: none;
  }

  .device-mockup.iphone-mockup {
    width: 180px;
  }

  .device-mockup.iphone-mockup .device-screen {
    width: 180px;
    height: 390px;
  }

  .device-mockup.ipad-mockup {
    width: 300px;
  }

  .device-mockup.ipad-mockup .device-screen {
    width: 300px;
    height: 400px;
  }

  .footer-links {
    flex-direction: column;
    gap: 1rem;
  }
}