/* CSS Custom Properties for Design System */
:root {
  /* Colors from the provided color scheme */
  --color-primary: #00bdd6;
  --color-primary-dark: #4051b5;
  --color-secondary: #8c24a8;
  --color-accent: #ff4281;
  --color-warning: #ffec3d;
  
  /* Dark theme colors */
  --color-bg-primary: #0f0f23;
  --color-bg-secondary: #1a1a2e;
  --color-bg-tertiary: #16213e;
  --color-bg-card: rgba(255, 255, 255, 0.05);
  
  /* Text colors */
  --color-text-primary: #ffffff;
  --color-text-secondary: rgba(255, 255, 255, 0.7);
  --color-text-muted: rgba(255, 255, 255, 0.5);
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #00bdd6, #4051b5);
  --gradient-secondary: linear-gradient(135deg, #8c24a8, #ff4281);
  --gradient-accent: linear-gradient(135deg, #ff4281, #ffec3d);
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  --spacing-3xl: 6rem;
  
  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 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: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;
  
  /* Borders and radius */
  --border-radius-sm: 0.375rem;
  --border-radius-md: 0.5rem;
  --border-radius-lg: 0.75rem;
  --border-radius-xl: 1rem;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);
  
  /* Transitions */
  --transition-fast: 0.15s ease-out;
  --transition-normal: 0.3s ease-out;
  --transition-slow: 0.5s ease-out;
}

/* Reset and base styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* Gradient text utility */
.gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Button components */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: var(--border-radius-md);
  font-family: var(--font-family);
  font-size: var(--font-size-sm);
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-normal);
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: 0 4px 14px rgba(0, 189, 214, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 189, 214, 0.4);
}

.btn-secondary {
  background: var(--color-bg-card);
  color: var(--color-text-primary);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-secondary);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-ghost:hover {
  color: var(--color-text-primary);
  border-color: rgba(255, 255, 255, 0.3);
  background: rgba(255, 255, 255, 0.05);
}

.btn-large {
  padding: 1rem 2rem;
  font-size: var(--font-size-base);
}

.btn-full {
  width: 100%;
  justify-content: center;
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  background: rgba(15, 15, 35, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  z-index: 1000;
  transition: all var(--transition-normal);
}

.navbar.scrolled {
  background: rgba(15, 15, 35, 0.98);
  box-shadow: var(--shadow-lg);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem var(--spacing-md);
  max-width: 1200px;
  margin: 0 auto;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--color-text-primary);
}

.logo-image {
  width: 150px;
  height: auto;
  border-radius: var(--border-radius-sm);
  transition: transform var(--transition-fast);
}

.nav-logo:hover .logo-image,
.footer-logo:hover .logo-image {
  transform: scale(1.05);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

.nav-link {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition-fast);
}

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

.nav-hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
  gap: 4px;
}

.nav-hamburger span {
  width: 24px;
  height: 2px;
  background: var(--color-text-primary);
  transition: all var(--transition-normal);
}

/* Hero Section */
.hero {
  padding: 8rem 0 4rem;
  background: radial-gradient(ellipse at top, rgba(0, 189, 214, 0.1), transparent 50%);
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
  min-height: 80vh;
}

.hero-title {
  font-size: var(--font-size-5xl);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
}

.hero-subtitle {
  font-size: var(--font-size-xl);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-xl);
  line-height: 1.6;
}

.hero-cta {
  display: flex;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}

.hero-stats {
  display: flex;
  gap: var(--spacing-xl);
}

.stat {
  text-align: center;
}

.stat-number {
  display: block;
  font-size: var(--font-size-2xl);
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

/* Hero Visual - App Preview */
.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.app-preview {
  position: relative;
  transform: perspective(1000px) rotateY(-15deg) rotateX(10deg);
  transition: transform var(--transition-slow);
}

.app-preview:hover {
  transform: perspective(1000px) rotateY(-10deg) rotateX(5deg);
}

.app-window {
  width: 500px;
  height: 350px;
  background: var(--color-bg-secondary);
  border-radius: var(--border-radius-xl);
  overflow: hidden;
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.3);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem;
  background: var(--color-bg-tertiary);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.window-controls {
  display: flex;
  gap: 8px;
}

.window-controls span {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.window-controls span:nth-child(1) { background: #ff5f57; }
.window-controls span:nth-child(2) { background: #ffbd2e; }
.window-controls span:nth-child(3) { background: #28ca42; }

.app-title {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text-primary);
}

.app-content {
  display: flex;
  height: calc(100% - 60px);
}

.sidebar {
  width: 200px;
  background: var(--color-bg-primary);
  padding: 1rem;
  border-right: 1px solid rgba(255, 255, 255, 0.1);
}

.search-bar {
  width: 100%;
  height: 32px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--border-radius-sm);
  margin-bottom: 1rem;
}

.nav-item {
  width: 100%;
  height: 32px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--border-radius-sm);
  margin-bottom: 8px;
}

.nav-item.active {
  background: var(--gradient-primary);
}

.main-content {
  flex: 1;
  padding: 1rem;
}

.content-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.title-bar {
  width: 200px;
  height: 24px;
  background: var(--gradient-primary);
  border-radius: var(--border-radius-sm);
}

.action-buttons {
  display: flex;
  gap: 8px;
}

.btn-sm {
  width: 60px;
  height: 24px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--border-radius-sm);
}

.content-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.content-card {
  height: 80px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--border-radius-md);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.floating-elements {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.floating-card {
  position: absolute;
  width: 80px;
  height: 60px;
  border-radius: var(--border-radius-md);
  opacity: 0.8;
  animation: float 6s ease-in-out infinite;
}

.card-1 {
  background: var(--gradient-primary);
  top: 20%;
  left: -10%;
  animation-delay: 0s;
}

.card-2 {
  background: var(--gradient-secondary);
  top: 60%;
  right: -10%;
  animation-delay: 2s;
}

.card-3 {
  background: var(--gradient-accent);
  bottom: 20%;
  left: -5%;
  animation-delay: 4s;
}

@keyframes float {
  0%, 100% { transform: translateY(0px) rotate(0deg); }
  50% { transform: translateY(-20px) rotate(5deg); }
}

/* Section styles */
.section-header {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
}

.section-title {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  line-height: 1.2;
}

.section-subtitle {
  font-size: var(--font-size-xl);
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* Features Section */
.features {
  padding: var(--spacing-3xl) 0;
  background: var(--color-bg-secondary);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--spacing-xl);
}

.feature-card {
  background: var(--color-bg-card);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--border-radius-xl);
  padding: var(--spacing-xl);
  transition: all var(--transition-normal);
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
  border-color: rgba(255, 255, 255, 0.2);
}

.feature-icon {
  width: 60px;
  height: 60px;
  border-radius: var(--border-radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-md);
  color: white;
}

.feature-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

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

/* Testimonials Section */
.testimonials {
  padding: var(--spacing-3xl) 0;
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-xl);
}

.testimonial-card {
  background: var(--color-bg-card);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--border-radius-xl);
  padding: var(--spacing-xl);
  transition: all var(--transition-normal);
}

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

.testimonial-content {
  margin-bottom: var(--spacing-lg);
}

.testimonial-content p {
  font-style: italic;
  color: var(--color-text-secondary);
  font-size: var(--font-size-lg);
  line-height: 1.6;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
}

.author-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 600;
}

.author-name {
  font-weight: 600;
  color: var(--color-text-primary);
}

.author-title {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.testimonial-rating {
  color: #fbbf24;
}

/* Pricing Section */
.pricing {
  padding: var(--spacing-3xl) 0;
  background: var(--color-bg-secondary);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-xl);
}

.pricing-card {
  background: var(--color-bg-card);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--border-radius-xl);
  padding: var(--spacing-xl);
  position: relative;
  transition: all var(--transition-normal);
}

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

.pricing-featured {
  border: 2px solid;
  border-image: var(--gradient-primary) 1;
  transform: scale(1.05);
}

.pricing-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gradient-primary);
  color: white;
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius-md);
  font-size: var(--font-size-sm);
  font-weight: 600;
}

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

.pricing-title {
  font-size: var(--font-size-2xl);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.pricing-price {
  display: flex;
  align-items: baseline;
  justify-content: center;
  margin-bottom: var(--spacing-sm);
}

.currency {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
}

.amount {
  font-size: var(--font-size-5xl);
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.period {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
}

.pricing-description {
  color: var(--color-text-secondary);
}

.pricing-features {
  list-style: none;
  margin-bottom: var(--spacing-xl);
}

.pricing-features li {
  padding: 0.5rem 0;
  color: var(--color-text-secondary);
}

.pricing-features li:first-child {
  padding-top: 0;
}

/* CTA Section */
.cta-section {
  padding: var(--spacing-3xl) 0;
  background: radial-gradient(ellipse at center, rgba(0, 189, 214, 0.1), transparent 70%);
}

.cta-content {
  text-align: center;
}

.cta-title {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  line-height: 1.2;
}

.cta-subtitle {
  font-size: var(--font-size-xl);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.cta-buttons {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  margin-bottom: var(--spacing-md);
}

.cta-note {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}

/* Footer */
.footer {
  background: var(--color-bg-secondary);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: var(--spacing-3xl) 0 var(--spacing-lg);
}

.footer-content {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--spacing-3xl);
  margin-bottom: var(--spacing-xl);
}

.footer-brand {
  max-width: 350px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--spacing-md);
}

.footer-logo span {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.footer-description {
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-xl);
}

.footer-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-md);
}

.footer-column ul {
  list-style: none;
}

.footer-column li {
  margin-bottom: var(--spacing-xs);
}

.footer-column a {
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--spacing-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--color-text-muted);
}

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

.footer-social a {
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

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

/* Responsive Design */
@media (max-width: 1024px) {
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--spacing-xl);
  }
  
  .app-preview {
    transform: none;
  }
  
  .app-window {
    max-width: 100%;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }
  
  .footer-links {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .nav-menu {
    display: none;
  }
  
  .nav-hamburger {
    display: flex;
  }
  
  .hero {
    padding: 6rem 0 2rem;
  }
  
  .hero-title {
    font-size: var(--font-size-3xl);
  }
  
  .hero-cta {
    flex-direction: column;
    align-items: center;
  }
  
  .hero-stats {
    justify-content: center;
    gap: var(--spacing-md);
  }
  
  .section-title {
    font-size: var(--font-size-3xl);
  }
  
  .features-grid,
  .testimonials-grid,
  .pricing-grid {
    grid-template-columns: 1fr;
  }
  
  .cta-buttons {
    flex-direction: column;
    align-items: center;
  }
  
  .footer-links {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: var(--spacing-md);
    text-align: center;
  }
  
  .app-window {
    width: 100%;
    height: 280px;
  }
  
  .floating-elements {
    display: none;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-sm);
  }
  
  .hero-title {
    font-size: var(--font-size-2xl);
  }
  
  .section-title {
    font-size: var(--font-size-2xl);
  }
  
  .cta-title {
    font-size: var(--font-size-2xl);
  }
  
  .btn-large {
    padding: 0.875rem 1.5rem;
    font-size: var(--font-size-sm);
  }
}

/* Animation classes for scroll-triggered animations */
[data-aos] {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

[data-aos].aos-animate {
  opacity: 1;
  transform: translateY(0);
}

/* Accessibility improvements */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  html {
    scroll-behavior: auto;
  }
}

/* Focus states for better accessibility */
.btn:focus,
.nav-link:focus,
.footer-column a:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --color-bg-card: rgba(255, 255, 255, 0.1);
    --color-text-secondary: rgba(255, 255, 255, 0.9);
  }
  
  .feature-card,
  .testimonial-card,
  .pricing-card {
    border-color: rgba(255, 255, 255, 0.3);
  }
}