/* Aurora Nexus - Aurora Borealis Color System */

/* ========================================
   CSS Custom Properties
   ======================================== */
:root {
  /* Brand Gradient */
  --aurora-gradient: linear-gradient(135deg, #06B6D4 0%, #8B5CF6 100%);
  --aurora-gradient-reverse: linear-gradient(135deg, #8B5CF6 0%, #06B6D4 100%);
  --aurora-gradient-vertical: linear-gradient(180deg, #06B6D4 0%, #8B5CF6 100%);
  --aurora-gradient-subtle: linear-gradient(135deg, rgba(6, 182, 212, 0.15) 0%, rgba(139, 92, 246, 0.15) 100%);
  --aurora-gradient-glow: linear-gradient(135deg, rgba(6, 182, 212, 0.4) 0%, rgba(139, 92, 246, 0.4) 100%);

  /* Primary (Violet) - Interactive Elements */
  --primary-50: #F5F3FF;
  --primary-100: #EDE9FE;
  --primary-200: #DDD6FE;
  --primary-300: #C4B5FD;
  --primary-400: #A78BFA;
  --primary-500: #8B5CF6;
  --primary-600: #7C3AED;
  --primary-700: #6D28D9;
  --primary-800: #5B21B6;
  --primary-900: #4C1D95;
  --primary-950: #2E1065;

  /* Accent (Cyan) - Secondary Highlights */
  --accent-50: #ECFEFF;
  --accent-100: #CFFAFE;
  --accent-200: #A5F3FC;
  --accent-300: #67E8F9;
  --accent-400: #22D3EE;
  --accent-500: #06B6D4;
  --accent-600: #0891B2;
  --accent-700: #0E7490;
  --accent-800: #155E75;
  --accent-900: #164E63;
  --accent-950: #083344;

  /* Neutral (Gunmetal Gray) */
  --neutral-0: #FFFFFF;
  --neutral-50: #F9FAFB;
  --neutral-100: #F3F4F6;
  --neutral-200: #E5E7EB;
  --neutral-300: #D1D5DB;
  --neutral-400: #9CA3AF;
  --neutral-500: #6B7280;
  --neutral-600: #4B5563;
  --neutral-700: #374151;
  --neutral-800: #1F2937;
  --neutral-900: #111827;
  --neutral-950: #0D1117;

  /* Semantic Colors */
  --danger-500: #EF4444;
  --danger-600: #DC2626;
  --success-500: #10B981;
  --success-600: #059669;
  --warning-500: #F59E0B;
  --warning-600: #D97706;

  /* Dark Mode Semantic Tokens */
  --background: #0D1117;
  --background-subtle: #111827;
  --background-muted: #1F2937;
  --foreground: #F9FAFB;
  --foreground-muted: #9CA3AF;
  --foreground-subtle: #6B7280;
  --border: #374151;
  --border-muted: #1F2937;
  --ring: #A78BFA;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5);
  --shadow-aurora: 0 4px 20px rgba(139, 92, 246, 0.3);
  --shadow-aurora-lg: 0 10px 40px rgba(139, 92, 246, 0.4);
  --shadow-glow-cyan: 0 0 30px rgba(6, 182, 212, 0.3);
  --shadow-glow-violet: 0 0 30px rgba(139, 92, 246, 0.3);

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  /* Spacing & Radius */
  --radius: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 24px;

  /* Transitions */
  --transition-fast: all 0.15s ease;
  --transition: all 0.3s ease;
  --transition-slow: all 0.5s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--foreground);
  background: var(--background);
  overflow-x: hidden;
}

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

a {
  color: var(--primary-400);
  text-decoration: none;
  transition: var(--transition-fast);
}

a:hover {
  color: var(--primary-300);
}

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

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(1.75rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 3vw, 1.75rem); }
h4 { font-size: 1.25rem; }

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

.text-gradient {
  background: var(--aurora-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ========================================
   Layout
   ======================================== */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* ========================================
   Header & Navigation
   ======================================== */
header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(13, 17, 23, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-muted);
  z-index: 1000;
  transition: var(--transition);
}

header.scrolled {
  background: rgba(13, 17, 23, 0.95);
  box-shadow: var(--shadow-lg);
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0;
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--foreground);
  display: flex;
  align-items: center;
  gap: 0.25rem;
  transition: var(--transition);
}

.logo:hover {
  color: var(--foreground);
}

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

.nav-links {
  display: flex;
  list-style: none;
  gap: 0.25rem;
  align-items: center;
}

.nav-links a {
  color: var(--foreground-muted);
  font-weight: 500;
  padding: 0.625rem 1rem;
  border-radius: var(--radius);
  transition: var(--transition-fast);
}

.nav-links a:hover {
  color: var(--foreground);
  background: rgba(255, 255, 255, 0.05);
}

.nav-links a.active {
  color: var(--primary-400);
}

.nav-links .btn {
  margin-left: 0.5rem;
}

/* Dropdown */
.dropdown {
  position: relative;
}

.dropdown-toggle {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
}

.dropdown-toggle::after {
  content: '';
  border: solid var(--foreground-muted);
  border-width: 0 2px 2px 0;
  display: inline-block;
  padding: 3px;
  transform: rotate(45deg);
  transition: var(--transition-fast);
  margin-top: -2px;
}

.dropdown:hover .dropdown-toggle::after {
  transform: rotate(-135deg);
  margin-top: 2px;
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 240px;
  background: var(--background-subtle);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 0.5rem;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: var(--transition-fast);
  box-shadow: var(--shadow-xl);
}

.dropdown:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(5px);
}

.dropdown-menu a {
  display: block;
  padding: 0.75rem 1rem;
  color: var(--foreground-muted);
  border-radius: var(--radius);
  transition: var(--transition-fast);
}

.dropdown-menu a:hover {
  background: var(--aurora-gradient-subtle);
  color: var(--foreground);
}

.dropdown-menu a.active {
  color: var(--primary-400);
}

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

.mobile-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--foreground);
  transition: var(--transition);
  border-radius: 2px;
}

/* ========================================
   Buttons
   ======================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--primary-500);
  color: var(--neutral-0);
}

.btn-primary:hover {
  background: var(--primary-600);
  color: var(--neutral-0);
  transform: translateY(-2px);
  box-shadow: var(--shadow-aurora);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-gradient {
  background: var(--aurora-gradient);
  color: var(--neutral-0);
}

.btn-gradient:hover {
  color: var(--neutral-0);
  transform: translateY(-2px);
  box-shadow: var(--shadow-aurora-lg);
}

.btn-secondary {
  background: transparent;
  color: var(--foreground);
  border: 2px solid var(--border);
}

.btn-secondary:hover {
  border-color: var(--primary-500);
  background: rgba(139, 92, 246, 0.1);
  color: var(--foreground);
}

.btn-ghost {
  background: transparent;
  color: var(--primary-400);
}

.btn-ghost:hover {
  background: rgba(139, 92, 246, 0.1);
}

.btn-large {
  padding: 1rem 2rem;
  font-size: 1.1rem;
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
  padding: 10rem 0 6rem;
  position: relative;
  overflow: hidden;
  min-height: 100vh;
  display: flex;
  align-items: center;
}

/* Aurora Background Effects */
.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background:
    radial-gradient(ellipse at 30% 20%, rgba(6, 182, 212, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse at 70% 60%, rgba(139, 92, 246, 0.12) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 80%, rgba(6, 182, 212, 0.08) 0%, transparent 40%);
  animation: aurora-shift 15s ease-in-out infinite;
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(circle at 80% 20%, rgba(139, 92, 246, 0.1) 0%, transparent 30%),
    radial-gradient(circle at 20% 80%, rgba(6, 182, 212, 0.1) 0%, transparent 30%);
  pointer-events: none;
}

@keyframes aurora-shift {
  0%, 100% { transform: translate(0, 0) rotate(0deg); }
  25% { transform: translate(2%, -2%) rotate(1deg); }
  50% { transform: translate(-1%, 2%) rotate(-1deg); }
  75% { transform: translate(-2%, -1%) rotate(0.5deg); }
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-text h1 {
  margin-bottom: 1.5rem;
  line-height: 1.1;
}

.hero-text p {
  font-size: 1.25rem;
  margin-bottom: 2rem;
  max-width: 540px;
}

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

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

.hero-graphic {
  width: 100%;
  max-width: 500px;
  aspect-ratio: 1;
  position: relative;
}

.hero-graphic .circle {
  position: absolute;
  border-radius: 50%;
  border: 1px solid;
  animation: pulse-glow 4s ease-in-out infinite;
}

.hero-graphic .circle:nth-child(1) {
  inset: 0;
  border-color: rgba(6, 182, 212, 0.3);
  animation-delay: 0s;
}

.hero-graphic .circle:nth-child(2) {
  inset: 15%;
  border-color: rgba(139, 92, 246, 0.3);
  animation-delay: 0.5s;
}

.hero-graphic .circle:nth-child(3) {
  inset: 30%;
  background: var(--aurora-gradient-subtle);
  border: none;
  animation-delay: 1s;
}

.hero-graphic .center-icon {
  position: absolute;
  inset: 35%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--background-subtle);
  border-radius: 50%;
  border: 2px solid rgba(139, 92, 246, 0.5);
  box-shadow: var(--shadow-aurora);
}

.hero-graphic .center-icon svg {
  width: 40%;
  height: 40%;
  color: var(--primary-400);
}

@keyframes pulse-glow {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.03); opacity: 0.7; }
}

/* Floating Particles */
.particles {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.particle {
  position: absolute;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  animation: float-particle 20s linear infinite;
}

.particle:nth-child(odd) {
  background: var(--accent-400);
}

.particle:nth-child(even) {
  background: var(--primary-400);
}

@keyframes float-particle {
  0% { transform: translateY(100vh) rotate(0deg); opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { transform: translateY(-100vh) rotate(720deg); opacity: 0; }
}

/* ========================================
   Sections
   ======================================== */
section {
  padding: 6rem 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 4rem;
}

.section-header h2 {
  margin-bottom: 1rem;
}

.section-header p {
  font-size: 1.1rem;
}

.section-label {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: var(--aurora-gradient-subtle);
  border: 1px solid rgba(139, 92, 246, 0.3);
  border-radius: 50px;
  color: var(--primary-400);
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
}

/* ========================================
   Cards
   ======================================== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.card {
  background: var(--background-subtle);
  border: 1px solid var(--border-muted);
  border-radius: var(--radius-xl);
  padding: 2rem;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--aurora-gradient);
  transform: scaleX(0);
  transform-origin: left;
  transition: var(--transition);
}

.card:hover {
  transform: translateY(-8px);
  border-color: var(--border);
  box-shadow: var(--shadow-xl);
}

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

.card-icon {
  width: 56px;
  height: 56px;
  background: var(--aurora-gradient);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  color: var(--neutral-0);
  transition: var(--transition);
}

.card:hover .card-icon {
  transform: scale(1.1);
  box-shadow: var(--shadow-aurora);
}

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

.card p {
  margin-bottom: 1.5rem;
  font-size: 0.95rem;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  color: var(--primary-400);
  transition: var(--transition-fast);
}

.card-link:hover {
  gap: 0.75rem;
  color: var(--primary-300);
}

/* ========================================
   Features Grid
   ======================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.feature-item {
  display: flex;
  gap: 1rem;
  padding: 1.5rem;
  background: var(--background-subtle);
  border: 1px solid var(--border-muted);
  border-radius: var(--radius-lg);
  transition: var(--transition);
}

.feature-item:hover {
  background: var(--aurora-gradient-subtle);
  border-color: rgba(139, 92, 246, 0.3);
  transform: translateX(4px);
}

.feature-icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  background: var(--aurora-gradient);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--neutral-0);
  font-weight: 700;
}

.feature-content h4 {
  margin-bottom: 0.25rem;
  font-size: 1.1rem;
}

.feature-content p {
  color: var(--foreground-muted);
  font-size: 0.9rem;
  margin-bottom: 0;
}

/* ========================================
   Stats Section
   ======================================== */
.stats-section {
  background: var(--background-subtle);
  border-top: 1px solid var(--border-muted);
  border-bottom: 1px solid var(--border-muted);
  position: relative;
  overflow: hidden;
}

.stats-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--aurora-gradient-subtle);
  opacity: 0.5;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 3rem;
  text-align: center;
  position: relative;
  z-index: 1;
}

.stat-item {
  padding: 1rem;
}

.stat-item h3 {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  margin-bottom: 0.5rem;
  background: var(--aurora-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-item p {
  color: var(--foreground-muted);
  font-size: 1rem;
  margin-bottom: 0;
}

/* ========================================
   CTA Section
   ======================================== */
.cta {
  background: var(--background-subtle);
  position: relative;
  overflow: hidden;
}

.cta::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 150%;
  height: 150%;
  background:
    radial-gradient(ellipse at center, rgba(139, 92, 246, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse at 30% 70%, rgba(6, 182, 212, 0.1) 0%, transparent 40%);
  transform: translate(-50%, -50%);
  pointer-events: none;
}

.cta-content {
  text-align: center;
  position: relative;
  z-index: 1;
  max-width: 700px;
  margin: 0 auto;
}

.cta h2 {
  margin-bottom: 1rem;
}

.cta p {
  font-size: 1.1rem;
  margin-bottom: 2rem;
}

/* ========================================
   Page Header
   ======================================== */
.page-header {
  padding: 10rem 0 4rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(ellipse at 50% 0%, rgba(6, 182, 212, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 50%, rgba(139, 92, 246, 0.1) 0%, transparent 40%);
  pointer-events: none;
}

.page-header h1 {
  position: relative;
  z-index: 1;
  margin-bottom: 1rem;
}

.page-header p {
  position: relative;
  z-index: 1;
  font-size: 1.25rem;
  max-width: 600px;
  margin: 0 auto;
}

/* ========================================
   Product Page
   ======================================== */
.product-hero {
  padding: 10rem 0 5rem;
  position: relative;
  overflow: hidden;
}

.product-hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(ellipse at 70% 20%, rgba(6, 182, 212, 0.15) 0%, transparent 40%),
    radial-gradient(ellipse at 30% 80%, rgba(139, 92, 246, 0.12) 0%, transparent 40%);
  pointer-events: none;
}

.product-hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  position: relative;
  z-index: 1;
}

.product-hero-text .section-label {
  margin-bottom: 1.5rem;
}

.product-hero-text h1 {
  margin-bottom: 1.5rem;
}

.product-hero-text p {
  font-size: 1.2rem;
  margin-bottom: 2rem;
}

.product-hero-visual {
  background: var(--background-subtle);
  border: 1px solid var(--border);
  border-radius: var(--radius-2xl);
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}

.product-hero-visual::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--aurora-gradient-subtle);
  opacity: 0.5;
}

.product-hero-visual .placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: 1;
}

.product-hero-visual .placeholder svg {
  width: 25%;
  height: 25%;
  color: var(--primary-400);
  opacity: 0.5;
}

/* ========================================
   Benefits Grid
   ======================================== */
.benefits-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.benefit-card {
  background: var(--background-subtle);
  border: 1px solid var(--border-muted);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: var(--transition);
}

.benefit-card:hover {
  border-color: var(--border);
  box-shadow: var(--shadow-lg);
}

.benefit-card h4 {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
  font-size: 1.1rem;
}

.benefit-card h4 .icon {
  color: var(--primary-400);
  flex-shrink: 0;
}

.benefit-card p {
  margin-bottom: 0;
  color: var(--foreground-muted);
  font-size: 0.95rem;
}

/* ========================================
   Contact Section
   ======================================== */
.contact-section {
  padding: 8rem 0;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 4rem;
}

.contact-info h2 {
  margin-bottom: 1rem;
}

.contact-info > p {
  margin-bottom: 2rem;
}

.contact-item {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.5rem;
  padding: 1.25rem;
  background: var(--background-subtle);
  border: 1px solid var(--border-muted);
  border-radius: var(--radius-lg);
  transition: var(--transition);
}

.contact-item:hover {
  border-color: var(--border);
}

.contact-item-icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  background: var(--aurora-gradient-subtle);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-400);
}

.contact-item-text h4 {
  margin-bottom: 0.25rem;
  font-size: 1rem;
}

.contact-item-text p {
  color: var(--foreground-muted);
  margin-bottom: 0;
  font-size: 0.9rem;
}

.contact-form {
  background: var(--background-subtle);
  padding: 2.5rem;
  border-radius: var(--radius-2xl);
  border: 1px solid var(--border-muted);
}

.contact-form h3 {
  margin-bottom: 1.5rem;
}

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

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: var(--foreground);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.875rem 1rem;
  background: var(--background);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 1rem;
  color: var(--foreground);
  transition: var(--transition-fast);
}

.form-group input:hover,
.form-group textarea:hover,
.form-group select:hover {
  border-color: var(--foreground-subtle);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary-500);
  box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.15);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--foreground-subtle);
}

.form-group textarea {
  resize: vertical;
  min-height: 150px;
}

.form-group select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%239CA3AF' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  background-size: 1rem;
}

.form-success {
  background: var(--aurora-gradient-subtle);
  border: 1px solid var(--accent-500);
  border-radius: var(--radius-lg);
  padding: 3rem;
  text-align: center;
}

.form-success h3 {
  color: var(--accent-400);
  margin-bottom: 1rem;
  font-size: 1.5rem;
}

.form-success p {
  color: var(--foreground-muted);
}

/* ========================================
   About Page
   ======================================== */
.about-hero {
  padding: 10rem 0 5rem;
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.about-text h1 {
  margin-bottom: 1.5rem;
}

.about-text p {
  font-size: 1.1rem;
}

.about-visual {
  background: var(--background-subtle);
  border: 1px solid var(--border);
  border-radius: var(--radius-2xl);
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.about-visual::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--aurora-gradient-subtle);
}

.about-visual svg {
  width: 30%;
  height: 30%;
  color: var(--primary-400);
  opacity: 0.4;
  position: relative;
  z-index: 1;
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.value-card {
  text-align: center;
  padding: 2rem;
  background: var(--background-subtle);
  border: 1px solid var(--border-muted);
  border-radius: var(--radius-xl);
  transition: var(--transition);
}

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

.value-icon {
  width: 80px;
  height: 80px;
  background: var(--aurora-gradient-subtle);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
  color: var(--primary-400);
  transition: var(--transition);
}

.value-card:hover .value-icon {
  background: var(--aurora-gradient);
  color: var(--neutral-0);
}

.value-card h3 {
  margin-bottom: 0.75rem;
}

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

/* ========================================
   Footer
   ======================================== */
footer {
  background: var(--background-subtle);
  border-top: 1px solid var(--border-muted);
  padding: 5rem 0 2rem;
  position: relative;
}

footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--aurora-gradient);
  opacity: 0.5;
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 4rem;
  margin-bottom: 4rem;
}

.footer-brand .logo {
  margin-bottom: 1rem;
}

.footer-brand p {
  color: var(--foreground-muted);
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
  max-width: 280px;
}

.footer-column h4 {
  color: var(--foreground);
  font-size: 1rem;
  margin-bottom: 1.5rem;
}

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

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

.footer-column ul a {
  color: var(--foreground-muted);
  font-size: 0.9rem;
  transition: var(--transition-fast);
}

.footer-column ul a:hover {
  color: var(--primary-400);
}

.footer-bottom {
  border-top: 1px solid var(--border-muted);
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.875rem;
  color: var(--foreground-muted);
}

.social-links {
  display: flex;
  gap: 0.75rem;
}

.social-links a {
  width: 40px;
  height: 40px;
  background: var(--background-muted);
  border: 1px solid var(--border-muted);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--foreground-muted);
  transition: var(--transition);
}

.social-links a:hover {
  background: var(--aurora-gradient);
  border-color: transparent;
  color: var(--neutral-0);
  transform: translateY(-2px);
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 1024px) {
  .hero-content,
  .product-hero-content,
  .about-content,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .footer-content {
    grid-template-columns: 1fr 1fr;
  }

  .hero-visual {
    order: -1;
  }

  .hero-graphic {
    max-width: 350px;
  }

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

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    height: -webkit-fill-available;
    background-color: #0D1117;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 2rem;
    gap: 1rem;
    z-index: 999;
    overflow-y: auto;
    box-sizing: border-box;
  }

  .nav-links.active {
    display: flex;
  }

  .nav-links li {
    display: block;
    width: 100%;
    text-align: center;
  }

  .nav-links a {
    display: block;
    font-size: 1.5rem;
    padding: 1rem;
    color: var(--foreground-muted);
  }

  .nav-links a:hover,
  .nav-links a.active {
    color: var(--foreground);
  }

  .nav-links .btn {
    display: inline-block;
    margin: 0.75rem 0;
    font-size: 1.25rem;
    padding: 1rem 2rem;
  }

  .dropdown {
    position: static;
  }

  .dropdown-toggle::after {
    display: none;
  }

  .dropdown-menu {
    position: static;
    background: transparent;
    border: none;
    box-shadow: none;
    opacity: 1;
    visibility: visible;
    transform: none;
    padding: 0.5rem 0;
    min-width: auto;
  }

  .dropdown-menu a {
    font-size: 1.25rem;
    padding: 0.75rem 1rem;
    color: var(--foreground-muted);
  }

  .mobile-toggle {
    display: flex;
    position: relative;
    z-index: 1001;
  }

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

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

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

  .hero {
    padding: 8rem 0 4rem;
    min-height: auto;
  }

  .hero-buttons {
    flex-direction: column;
  }

  section {
    padding: 4rem 0;
  }

  .card-grid,
  .features-grid {
    grid-template-columns: 1fr;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .footer-content {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }

  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 1rem;
  }

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

/* ========================================
   Animations & Effects
   ======================================== */
@keyframes fade-in {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slide-in-left {
  from { opacity: 0; transform: translateX(-30px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes slide-in-right {
  from { opacity: 0; transform: translateX(30px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes scale-in {
  from { opacity: 0; transform: scale(0.9); }
  to { opacity: 1; transform: scale(1); }
}

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

.animate-slide-left {
  animation: slide-in-left 0.6s ease forwards;
}

.animate-slide-right {
  animation: slide-in-right 0.6s ease forwards;
}

/* Stagger delays */
.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }
.delay-5 { animation-delay: 0.5s; }

/* Glow effects */
.glow-cyan {
  box-shadow: var(--shadow-glow-cyan);
}

.glow-violet {
  box-shadow: var(--shadow-glow-violet);
}

/* Gradient border utility */
.gradient-border {
  position: relative;
  background: var(--background-subtle);
  border-radius: var(--radius-lg);
}

.gradient-border::before {
  content: '';
  position: absolute;
  inset: -1px;
  background: var(--aurora-gradient);
  border-radius: inherit;
  z-index: -1;
  opacity: 0;
  transition: var(--transition);
}

.gradient-border:hover::before {
  opacity: 1;
}

/* ========================================
   Login Button
   ======================================== */
.nav-links .btn-login {
  padding: 0.5rem 1rem;
  font-size: 0.9rem;
  margin-left: 0;
}

/* ========================================
   Badges
   ======================================== */
.badge {
  display: inline-block;
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.25rem 0.5rem;
  background: var(--aurora-gradient);
  color: var(--neutral-0);
  border-radius: 4px;
  vertical-align: middle;
  margin-left: 0.5rem;
}

.badge-concept {
  background: var(--aurora-gradient-subtle);
  border: 1px solid rgba(139, 92, 246, 0.4);
  color: var(--primary-400);
}

.badge-development {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.15) 0%, rgba(6, 182, 212, 0.15) 100%);
  border: 1px solid rgba(16, 185, 129, 0.4);
  color: var(--success-500);
}

/* ========================================
   Legal Pages
   ======================================== */
.legal-content {
  padding: 6rem 0;
}

.legal-document {
  max-width: 800px;
  margin: 0 auto;
}

.legal-document h1 {
  margin-bottom: 0.5rem;
}

.legal-document .effective-date {
  color: var(--foreground-muted);
  font-size: 0.95rem;
  margin-bottom: 2rem;
}

.legal-document h2 {
  font-size: 1.5rem;
  margin-top: 2.5rem;
  margin-bottom: 1rem;
}

.legal-document h3 {
  font-size: 1.25rem;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}

.legal-document p {
  margin-bottom: 1rem;
  line-height: 1.8;
}

.legal-document ul,
.legal-document ol {
  margin-bottom: 1rem;
  padding-left: 1.5rem;
}

.legal-document li {
  margin-bottom: 0.5rem;
  color: var(--foreground-muted);
  line-height: 1.7;
}

.legal-document a {
  color: var(--primary-400);
}

.legal-document a:hover {
  color: var(--primary-300);
}