/* Apple-Inspired Design System */
:root {
  /* Colors - Apple-inspired palette */
  --color-primary: #007AFF;
  --color-primary-dark: #0056CC;
  --color-secondary: #5AC8FA;
  --color-accent: #FF3B30;
  --color-success: #00FF44;
  --color-warning: #FF9500;
  
  /* Neutrals */
  --color-white: #FFFFFF;
  --color-gray-50: #F9FAFB;
  --color-gray-100: #F3F4F6;
  --color-gray-200: #E5E7EB;
  --color-gray-300: #D1D5DB;
  --color-gray-400: #9CA3AF;
  --color-gray-500: #6B7280;
  --color-gray-600: #4B5563;
  --color-gray-700: #374151;
  --color-gray-800: #1F2937;
  --color-gray-900: #111827;
  --color-black: #000000;
  
  /* Dark mode colors */
  --color-dark-bg: #000000;
  --color-dark-surface: #1C1C1E;
  --color-dark-elevated: #2C2C2E;
  --color-dark-text: #FFFFFF;
  --color-dark-text-secondary: #98989D;
  
  /* Feature accent colors */
  --accent-primary: #6633FF;
  --accent-primary-dark: #5028CC;
  --accent-secondary: #5AC8FA;
  
  /* 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;
  --font-size-6xl: 3.75rem;
  --font-size-7xl: 4.5rem;
  
  /* Line heights */
  --line-height-tight: 1.25;
  --line-height-snug: 1.375;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.625;
  --line-height-loose: 2;
  
  /* Font weights */
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;
  --font-weight-black: 900;
  
  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;
  
  /* Border radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-3xl: 2rem;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  
  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Z-index */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

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

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-fixed);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  background: rgba(0, 0, 0, 0.72);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--space-4) var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-dark-text);
}

.logo-mark {
  width: 28px;
  height: 28px;
  color: var(--color-primary);
}

.logo-text {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  letter-spacing: -0.025em;
}

/* Hero Section */
.hero {
  padding: 140px 0 var(--space-32);
  position: relative;
  overflow: hidden;
}

.hero-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-6);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-20);
  align-items: center;
}

.hero-content {
  max-width: 600px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: var(--radius-full);
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: var(--space-8);
  backdrop-filter: blur(10px);
}

.badge-dot {
  width: 6px;
  height: 6px;
  background: var(--color-success) !important;
  border-radius: 50%;
  animation: badgePulse 2s infinite;
  box-shadow: 0 0 8px var(--color-success), 0 0 12px rgba(0, 255, 68, 0.4);
}

@keyframes badgePulse {
  0%, 100% { 
    opacity: 1; 
    transform: scale(1);
  }
  50% { 
    opacity: 0.6; 
    transform: scale(1.1);
  }
}

.hero-title {
  font-size: var(--font-size-6xl);
  font-weight: var(--font-weight-bold);
  letter-spacing: -0.025em;
  line-height: var(--line-height-tight);
  color: var(--color-dark-text);
  margin-bottom: var(--space-6);
}

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

.hero-description {
  font-size: var(--font-size-xl);
  line-height: var(--line-height-relaxed);
  color: var(--color-dark-text-secondary);
  margin-bottom: var(--space-10);
  max-width: 540px;
}

.hero-cta {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.form-group {
  display: flex;
  gap: var(--space-3);
  align-items: stretch;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-xl);
  padding: var(--space-2);
  backdrop-filter: blur(10px);
  transition: all var(--transition-normal);
}

.form-group:focus-within {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.1);
}

.email-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  padding: var(--space-4) var(--space-6);
  font-size: var(--font-size-base);
  color: var(--color-dark-text);
  border-radius: var(--radius-lg);
}

.email-input::placeholder {
  color: var(--color-dark-text-secondary);
}

.cta-button {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  background: var(--color-primary);
  color: var(--color-white);
  border: none;
  border-radius: var(--radius-lg);
  padding: var(--space-4) var(--space-6);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
  transition: all var(--transition-normal);
  white-space: nowrap;
}

.cta-button:hover {
  background: var(--color-primary-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

.arrow-icon {
  width: 16px;
  height: 16px;
  transition: transform var(--transition-normal);
}

.cta-button:hover .arrow-icon {
  transform: translateX(2px);
}

.form-caption {
  font-size: var(--font-size-sm);
  color: var(--color-dark-text-secondary);
  margin-top: var(--space-2);
}

/* Hero Visual */
.hero-visual {
  position: relative;
  height: 500px;
}

/* Document Library Visualization */
.document-library {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  background: linear-gradient(135deg, rgba(0, 122, 255, 0.15) 0%, rgba(90, 200, 250, 0.15) 100%);
  border: 2px solid rgba(0, 122, 255, 0.4);
  border-radius: var(--radius-3xl);
  backdrop-filter: blur(20px);
  overflow: hidden;
  box-shadow: 0 16px 64px rgba(0, 122, 255, 0.3), 0 8px 32px rgba(0, 0, 0, 0.4);
}

.library-header {
  padding: var(--space-4) var(--space-6);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(255, 255, 255, 0.02);
}

.library-title {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-dark-text);
  opacity: 0.9;
}

.library-count {
  font-size: var(--font-size-xs);
  color: var(--color-dark-text-secondary);
  opacity: 0.7;
}

.document-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
  padding: var(--space-6);
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  max-height: 420px;
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 255, 255, 0.3) transparent;
}

.document-grid::-webkit-scrollbar {
  width: 6px;
}

.document-grid::-webkit-scrollbar-track {
  background: transparent;
}

.document-grid::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.3);
  border-radius: 3px;
}

.document-grid::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.5);
}

.document-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: all var(--transition-normal);
  cursor: pointer;
  min-height: 340px;
}

.document-card:hover {
  transform: translateY(-2px);
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.15);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.document-preview {
  height: 180px;
  background: rgba(255, 255, 255, 0.95);
  margin: var(--space-3);
  border-radius: var(--radius-lg);
  padding: var(--space-3);
  position: relative;
  overflow: hidden;
}

.document-content {
  height: 100%;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.document-text {
  height: 100%;
  font-family: -apple-system, system-ui, sans-serif;
  font-size: 9px;
  line-height: 1.2;
  color: #333;
  overflow: hidden;
}

.document-text h4 {
  font-size: 10px;
  font-weight: 600;
  margin: 0 0 6px 0;
  color: #000;
}

.document-text p {
  margin: 0 0 4px 0;
  text-align: left;
}

.doc-header {
  height: 8px;
  background: rgba(0, 0, 0, 0.08);
  border-radius: 2px;
  margin-bottom: var(--space-1);
}

.doc-line {
  height: 4px;
  background: rgba(0, 0, 0, 0.06);
  border-radius: 2px;
}

.doc-line.short {
  width: 70%;
}

.doc-line.medium {
  width: 85%;
}

.document-info {
  padding: var(--space-4) var(--space-4) var(--space-5);
}

.document-title {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-dark-text);
  margin-bottom: var(--space-1);
  line-height: var(--line-height-tight);
}

.document-meta {
  font-size: var(--font-size-xs);
  color: var(--color-dark-text-secondary);
  margin-bottom: var(--space-3);
  opacity: 0.8;
}

.reading-progress {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.progress-bar {
  flex: 1;
  height: 3px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 2px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: var(--color-primary);
  border-radius: 2px;
  transition: width var(--transition-normal);
}

.progress-fill.completed {
  background: var(--color-success);
}

.progress-text {
  font-size: var(--font-size-xs);
  color: var(--color-dark-text-secondary);
  opacity: 0.7;
  white-space: nowrap;
}

.privacy-content .privacy-icon {
  width: 120px;
  height: 120px;
  margin: 0 auto var(--space-8);
  color: var(--color-success);
}

.privacy-content .privacy-icon svg {
  width: 100%;
  height: 100%;
}


/* Features Section */
.features {
  padding: var(--space-32) 0;
  background: rgba(255, 255, 255, 0.02);
}

.features-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.features-header {
  text-align: center;
  margin-bottom: var(--space-20);
}

.section-title {
  font-size: var(--font-size-5xl);
  font-weight: var(--font-weight-bold);
  letter-spacing: -0.025em;
  line-height: var(--line-height-tight);
  color: var(--color-dark-text);
  margin-bottom: var(--space-6);
}

.section-description {
  font-size: var(--font-size-xl);
  color: var(--color-dark-text-secondary);
  max-width: 600px;
  margin: 0 auto;
  line-height: var(--line-height-relaxed);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-12);
}

.feature-item {
  display: flex;
  gap: var(--space-8);
  align-items: flex-start;
}

.feature-visual {
  flex-shrink: 0;
}

.feature-icon-container {
  width: 60px;
  height: 60px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
}

.feature-icon {
  width: 24px;
  height: 24px;
}

.feature-content h3 {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-dark-text);
  margin-bottom: var(--space-3);
  letter-spacing: -0.025em;
}

.feature-content p {
  font-size: var(--font-size-lg);
  color: var(--color-dark-text-secondary);
  line-height: var(--line-height-relaxed);
}

/* Privacy Section */
.privacy {
  padding: var(--space-32) 0;
}

.privacy-container {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 var(--space-6);
  text-align: center;
}


.privacy-content h2 {
  font-size: var(--font-size-5xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-dark-text);
  margin-bottom: var(--space-6);
  letter-spacing: -0.025em;
}

.privacy-content p {
  font-size: var(--font-size-xl);
  color: var(--color-dark-text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-10);
}

.privacy-features {
  display: flex;
  justify-content: center;
  gap: var(--space-8);
  flex-wrap: wrap;
}

.privacy-feature {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-lg);
  color: var(--color-dark-text-secondary);
}

.feature-check {
  color: var(--color-success);
  font-weight: var(--font-weight-bold);
}

/* Feature Demo Modal */
.feature-demo-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(10px);
  z-index: 2000;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.feature-demo-modal.show {
  opacity: 1;
  visibility: visible;
}

.feature-demo-content {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.9);
  background: rgba(30, 30, 30, 0.95);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-3xl);
  padding: var(--space-8);
  max-width: 500px;
  width: 90%;
  backdrop-filter: blur(20px);
  transition: transform var(--transition-normal);
}

.feature-demo-modal.show .feature-demo-content {
  transform: translate(-50%, -50%) scale(1);
}

.demo-header h3 {
  color: var(--color-dark-text);
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-3);
}

.demo-header p {
  color: var(--color-dark-text-secondary);
  font-size: var(--font-size-base);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-6);
}

.demo-features {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
}

.demo-feature {
  color: var(--color-dark-text);
  font-size: var(--font-size-sm);
  padding: var(--space-3);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  transition: all var(--transition-normal);
}

.demo-feature:hover {
  background: rgba(255, 255, 255, 0.08);
  transform: translateX(4px);
}

.demo-cta {
  background: var(--color-primary);
  color: white;
  border: none;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
  transition: all var(--transition-normal);
  width: 100%;
}

.demo-cta:hover {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
}

.modal-close {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  background: none;
  border: none;
  color: var(--color-dark-text-secondary);
  font-size: var(--font-size-2xl);
  cursor: pointer;
  transition: color var(--transition-normal);
}

.modal-close:hover {
  color: var(--color-dark-text);
}

/* Modal */
.modal {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  display: none;
  align-items: center;
  justify-content: center;
  padding: var(--space-6);
}

.modal.show {
  display: flex;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(8px);
}

.modal-content {
  position: relative;
  background: var(--color-dark-surface);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-3xl);
  max-width: 480px;
  width: 100%;
  padding: var(--space-8);
  box-shadow: var(--shadow-2xl);
  transform: scale(0.95);
  opacity: 0;
  transition: all var(--transition-normal);
}

.modal.show .modal-content {
  transform: scale(1);
  opacity: 1;
}

.modal-header {
  text-align: center;
  margin-bottom: var(--space-6);
  position: relative;
}

.success-icon {
  width: 60px;
  height: 60px;
  margin: 0 auto var(--space-4);
  color: var(--color-success);
}

.modal-close {
  position: absolute;
  top: 0;
  right: 0;
  background: none;
  border: none;
  color: var(--color-dark-text-secondary);
  cursor: pointer;
  padding: var(--space-2);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.modal-close:hover {
  color: var(--color-dark-text);
  background: rgba(255, 255, 255, 0.1);
}

.modal-close svg {
  width: 20px;
  height: 20px;
}

.modal-header h3 {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-dark-text);
}

.modal-body p {
  font-size: var(--font-size-base);
  color: var(--color-dark-text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-6);
}

.modal-benefits {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.benefit {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--font-size-sm);
  color: var(--color-dark-text-secondary);
}

.benefit-icon {
  width: 16px;
  height: 16px;
  color: var(--color-primary);
}

/* Footer */
.footer {
  padding: var(--space-20) 0 var(--space-10);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-dark-text);
  font-weight: var(--font-weight-semibold);
}

.footer-logo .logo-mark {
  width: 24px;
  height: 24px;
  color: var(--color-primary);
}

.footer-text {
  font-size: var(--font-size-sm);
  color: var(--color-dark-text-secondary);
}

/* Responsive Design */
@media (max-width: 1024px) {
  .hero-container {
    grid-template-columns: 1fr;
    gap: var(--space-16);
    text-align: center;
  }
  
  .hero-visual {
    height: 400px;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
    gap: var(--space-10);
  }
  
  .privacy-features {
    flex-direction: column;
    align-items: center;
    gap: var(--space-4);
  }
}

@media (max-width: 768px) {
  .nav-container {
    padding: var(--space-3) var(--space-4);
  }
  
  .hero {
    padding: 120px 0 var(--space-24);
  }
  
  .hero-container {
    padding: 0 var(--space-4);
  }
  
  .hero-title {
    font-size: var(--font-size-4xl);
  }
  
  .hero-description {
    font-size: var(--font-size-lg);
  }
  
  .form-group {
    flex-direction: column;
    gap: var(--space-2);
  }

  .document-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-2);
    padding: var(--space-3);
    max-height: 350px;
  }

  .document-card {
    max-width: none;
    min-height: 180px;
  }

  .document-preview {
    height: 60px;
  }
  
  .features {
    padding: var(--space-24) 0;
  }
  
  .features-container {
    padding: 0 var(--space-4);
  }
  
  .section-title {
    font-size: var(--font-size-3xl);
  }
  
  .section-description {
    font-size: var(--font-size-lg);
  }
  
  .feature-item {
    flex-direction: column;
    text-align: center;
    gap: var(--space-4);
  }
  
  .privacy {
    padding: var(--space-24) 0;
  }
  
  .privacy-container {
    padding: 0 var(--space-4);
  }
  
  .privacy-content h2 {
    font-size: var(--font-size-3xl);
  }
  
  .footer-content {
    flex-direction: column;
    gap: var(--space-4);
    text-align: center;
  }
  
  .modal {
    padding: var(--space-4);
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: var(--font-size-3xl);
  }
  
  .section-title {
    font-size: var(--font-size-2xl);
  }
  
  .privacy-content h2 {
    font-size: var(--font-size-2xl);
  }
  
  .floating-card {
    width: 140px !important;
    padding: var(--space-3);
  }
  
  .card-1 {
    top: 10% !important;
    left: 2% !important;
  }
  
  .card-2 {
    top: 40% !important;
    right: 5% !important;
  }
  
  .card-3 {
    bottom: 10% !important;
    left: 15% !important;
  }
  
  .card-icon {
    width: 28px;
    height: 28px;
  }
  
  .card-icon::before {
    width: 16px !important;
    height: 16px !important;
  }
  
  .floating-card h3 {
    font-size: var(--font-size-base);
  }
  
  .floating-card p {
    font-size: var(--font-size-xs);
  }
}

/* Smooth interactions */
* {
  transition: color var(--transition-fast), background-color var(--transition-fast), border-color var(--transition-fast);
}

/* Selection styles */
::selection {
  background: rgba(0, 122, 255, 0.3);
  color: var(--color-white);
}

/* Focus styles */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ===============================
   APPLE-STYLE FEATURE SECTIONS
   =============================== */

/* Feature Navigation */
.feature-nav {
  position: fixed;
  top: 80px;
  left: 0;
  right: 0;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  z-index: var(--z-sticky);
  transform: translateY(-100%);
  opacity: 0;
  transition: all var(--transition-normal);
}

.feature-nav.visible {
  transform: translateY(0);
  opacity: 1;
}

.feature-nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.feature-nav-items {
  display: flex;
  gap: var(--space-8);
}

.feature-nav-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  transition: color var(--transition-fast);
  position: relative;
}

.feature-nav-item:hover {
  color: rgba(255, 255, 255, 0.9);
}

.feature-nav-item.active {
  color: var(--accent-primary);
}

.nav-indicator {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transition: all var(--transition-fast);
}

.feature-nav-item.active .nav-indicator {
  background: var(--accent-primary);
  transform: scale(1.2);
}

.scroll-progress {
  width: 200px;
  height: 2px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 1px;
  overflow: hidden;
}

.scroll-progress .progress-bar {
  height: 100%;
  background: transparent;
}

.scroll-progress .progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
  border-radius: 1px;
  transition: width 0.1s ease;
  width: 0%;
}

/* Feature Sections */
.feature-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: var(--space-32) 0;
  position: relative;
  overflow: hidden;
}

.feature-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-6);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}

.feature-content {
  opacity: 0.3;
  transform: translateY(30px);
  transition: all var(--transition-slow);
}

.feature-visual {
  opacity: 0.3;
  transform: translateY(15px);
  transition: all var(--transition-slow);
}

.feature-header {
  max-width: 480px;
}

.feature-title {
  font-size: var(--font-size-5xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-white);
  margin-bottom: var(--space-6);
  line-height: var(--line-height-tight);
}

.feature-description {
  font-size: var(--font-size-xl);
  color: rgba(255, 255, 255, 0.8);
  line-height: var(--line-height-relaxed);
}

/* AI Analysis Demo */
.analysis-demo {
  background: linear-gradient(135deg, rgba(0, 122, 255, 0.15) 0%, rgba(90, 200, 250, 0.15) 100%);
  border: 2px solid rgba(0, 122, 255, 0.4);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  backdrop-filter: blur(20px);
  box-shadow: 0 16px 64px rgba(0, 122, 255, 0.3), 0 8px 32px rgba(0, 0, 0, 0.4);
}

.document-analyzer {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

.analyzer-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.analyzer-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-white);
}

.processing-indicator {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.processing-dots {
  display: flex;
  gap: var(--space-1);
}

.processing-dots span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #60A5FA;
  opacity: 0;
  animation: processingPulse 1.5s infinite;
}

.processing-dots span:nth-child(2) {
  animation-delay: 0.3s;
}

.processing-dots span:nth-child(3) {
  animation-delay: 0.6s;
}

@keyframes processingPulse {
  0%, 80%, 100% { opacity: 0.3; transform: scale(0.8); }
  40% { opacity: 1; transform: scale(1.2); }
}

.analysis-results {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.analysis-item {
  opacity: 1;
  transform: translateX(0px);
  transition: all var(--transition-normal);
}

.analysis-label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: #60A5FA;
  margin-bottom: var(--space-2);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.analysis-content {
  font-size: var(--font-size-base);
  color: rgba(255, 255, 255, 0.9);
  line-height: var(--line-height-relaxed);
}

.analysis-tags {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.analysis-tags .tag {
  background: rgba(0, 122, 255, 0.3);
  color: #60A5FA;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  border: 1px solid rgba(0, 122, 255, 0.5);
}

/* Semantic Search Demo */
.search-demo {
  background: linear-gradient(135deg, rgba(0, 122, 255, 0.15) 0%, rgba(90, 200, 250, 0.15) 100%);
  border: 2px solid rgba(0, 122, 255, 0.4);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  backdrop-filter: blur(20px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

.search-interface {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
}

.search-bar {
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  margin-bottom: var(--space-6);
}

.search-bar input {
  flex: 1;
  background: none;
  border: none;
  color: var(--color-white);
  font-size: var(--font-size-base);
  outline: none;
}

.search-bar input::placeholder {
  color: rgba(255, 255, 255, 0.5);
}

.search-button {
  width: 24px;
  height: 24px;
  color: #60A5FA;
}

.search-results {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.search-result {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  opacity: 0.3;
  transform: translateY(15px);
  transition: all var(--transition-normal);
}

.result-title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-white);
  margin-bottom: var(--space-2);
}

.result-snippet {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.8);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-2);
}

.result-meta {
  font-size: var(--font-size-xs);
  color: #60A5FA;
  font-weight: var(--font-weight-medium);
}

/* Smart Organization Demo */
.organization-demo {
  background: linear-gradient(135deg, rgba(0, 122, 255, 0.15) 0%, rgba(90, 200, 250, 0.15) 100%);
  border: 2px solid rgba(0, 122, 255, 0.4);
  border-radius: var(--radius-2xl);
  padding: var(--space-10);
  backdrop-filter: blur(20px);
  box-shadow: 0 16px 64px rgba(0, 122, 255, 0.3), 0 8px 32px rgba(0, 0, 0, 0.4);
  overflow: visible;
}

.folder-structure {
  background: rgba(255, 255, 255, 0.15);
  border: 2px solid rgba(0, 122, 255, 0.3);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: 0 8px 32px rgba(0, 122, 255, 0.2);
}

.folder-header {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-white);
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.folder-tree {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.folder-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  opacity: 1;
  transform: translateX(0px);
  transition: all var(--transition-normal);
  position: relative;
}

.folder-item.organizing {
  border-color: #60A5FA;
  background: rgba(96, 165, 250, 0.1);
}

.folder-icon {
  font-size: var(--font-size-lg);
}

.folder-item span {
  font-size: var(--font-size-base);
  color: var(--color-white);
  font-weight: var(--font-weight-medium);
}

.organizing-indicator {
  position: absolute;
  right: var(--space-4);
  font-size: 8px;
  color: #60A5FA;
  font-weight: var(--font-weight-medium);
  background: rgba(0, 122, 255, 0.2);
  border: 1px solid rgba(96, 165, 250, 0.5);
  border-radius: 2px;
  padding: 2px 4px;
  backdrop-filter: blur(10px);
}

/* Note Annotations Demo */
.annotation-demo {
  background: linear-gradient(135deg, rgba(0, 122, 255, 0.15) 0%, rgba(90, 200, 250, 0.15) 100%);
  border: 2px solid rgba(0, 122, 255, 0.4);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  backdrop-filter: blur(20px);
  box-shadow: 0 16px 64px rgba(0, 122, 255, 0.3), 0 8px 32px rgba(0, 0, 0, 0.4);
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  min-height: 300px;
}

.document-excerpt {
  background: rgba(255, 255, 255, 0.15);
  border: 2px solid rgba(255, 255, 255, 0.4);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  position: relative;
  box-shadow: 0 16px 64px rgba(0, 122, 255, 0.3), 0 8px 32px rgba(0, 0, 0, 0.4);
}

.document-header {
  margin-bottom: var(--space-4);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding-bottom: var(--space-3);
}

.document-title {
  color: var(--color-white);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-1);
}

.document-meta {
  color: rgba(255, 255, 255, 0.6);
  font-size: var(--font-size-sm);
}

.note-indicator {
  display: inline-block;
  font-size: 14px;
  margin-left: var(--space-1);
  opacity: 0.8;
}

.document-excerpt p {
  font-size: var(--font-size-base);
  color: rgba(255, 255, 255, 0.9);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-3);
}

.highlighted-text {
  background: rgba(0, 122, 255, 0.4);
  border: 1px solid rgba(0, 122, 255, 0.8);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  color: rgba(255, 255, 255, 1);
  font-weight: var(--font-weight-medium);
  transition: all var(--transition-normal);
}

.annotation-suggestion {
  background: rgba(0, 122, 255, 0.1);
  border: 1px solid rgba(0, 122, 255, 0.3);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  opacity: 0;
  transform: translateY(20px);
  transition: all var(--transition-normal);
}

.suggestion-header {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: #93C5FD;
  margin-bottom: var(--space-2);
}

.suggestion-text {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: var(--space-3);
}

.add-annotation {
  background: var(--accent-primary);
  color: var(--color-white);
  border: none;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.add-annotation:hover {
  background: var(--accent-primary-dark);
}

.annotations-row {
  display: flex;
  gap: var(--space-4);
  justify-content: space-between;
}

.annotation-card {
  flex: 1;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(0, 122, 255, 0.3);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  text-align: center;
  transition: all var(--transition-normal);
}

.annotation-card:hover {
  background: rgba(0, 122, 255, 0.1);
  border-color: rgba(0, 122, 255, 0.5);
  transform: translateY(-2px);
}

.annotation-card .annotation-type {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  color: #60A5FA;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-2);
}

.annotation-card .annotation-text {
  font-size: var(--font-size-sm);
  color: var(--color-white);
  font-weight: var(--font-weight-medium);
  margin-bottom: var(--space-2);
  line-height: var(--line-height-tight);
}

.annotation-card .annotation-link {
  font-size: var(--font-size-xs);
  color: rgba(255, 255, 255, 0.7);
  font-weight: var(--font-weight-medium);
}

/* Responsive annotations */
@media (max-width: 768px) {
  .annotations-row {
    flex-direction: column;
    gap: var(--space-3);
  }
  
  .annotation-card {
    padding: var(--space-3);
  }
}

/* Old annotation styles removed - using new horizontal layout */

.confidence {
  font-size: var(--font-size-xs);
  color: #60A5FA;
  font-weight: var(--font-weight-medium);
}

/* Old annotation text and links styles removed */

/* Intelligent Tagging Demo */
.tagging-demo {
  background: linear-gradient(135deg, rgba(0, 122, 255, 0.15) 0%, rgba(90, 200, 250, 0.15) 100%);
  border: 2px solid rgba(0, 122, 255, 0.4);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  backdrop-filter: blur(20px);
  box-shadow: 0 16px 64px rgba(0, 122, 255, 0.3), 0 8px 32px rgba(0, 0, 0, 0.4);
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.tagging-demo .document-card {
  background: rgba(255, 255, 255, 0.15);
  border: 2px solid rgba(255, 255, 255, 0.4);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

.tagging-demo .document-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-white);
  margin-bottom: var(--space-4);
}

.auto-tags {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.tag-generation {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.generating-tag {
  background: rgba(0, 122, 255, 0.3);
  color: #93C5FD;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  border: 1px solid rgba(0, 122, 255, 0.5);
  opacity: 0.8;
  transition: all var(--transition-normal);
}

.generated-tag {
  background: rgba(0, 122, 255, 0.3);
  color: #93C5FD;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  border: 1px solid rgba(0, 122, 255, 0.5);
  opacity: 0.9;
  transform: scale(1);
  transition: all var(--transition-normal);
}

.tag-stats {
  font-size: var(--font-size-xs);
  color: #60A5FA;
  font-weight: var(--font-weight-medium);
}

.smart-collections {
  background: rgba(255, 255, 255, 0.15);
  border: 2px solid rgba(255, 255, 255, 0.4);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

.collection-title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-white);
  margin-bottom: var(--space-4);
}

.collection-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-3);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-2);
}

.collection-name {
  font-size: var(--font-size-sm);
  color: var(--color-white);
  font-weight: var(--font-weight-medium);
}

.collection-count {
  font-size: var(--font-size-xs);
  color: #60A5FA;
  font-weight: var(--font-weight-semibold);
}

/* Smart Connections Demo */
.connections-demo {
  background: linear-gradient(135deg, rgba(0, 122, 255, 0.15) 0%, rgba(90, 200, 250, 0.15) 100%);
  border: 2px solid rgba(0, 122, 255, 0.4);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  backdrop-filter: blur(20px);
  box-shadow: 0 16px 64px rgba(0, 122, 255, 0.3), 0 8px 32px rgba(0, 0, 0, 0.4);
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.knowledge-graph {
  position: relative;
  background: radial-gradient(circle at center, rgba(0, 122, 255, 0.15) 0%, rgba(255, 255, 255, 0.08) 70%);
  border: 1px solid rgba(0, 122, 255, 0.3);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  height: 300px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.graph-node {
  position: absolute;
  background: linear-gradient(135deg, rgba(0, 122, 255, 0.9) 0%, rgba(90, 200, 250, 0.7) 100%);
  border: 2px solid rgba(0, 122, 255, 0.8);
  border-radius: var(--radius-md);
  padding: var(--space-2) var(--space-3);
  color: var(--color-white);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  opacity: 0.95;
  transform: scale(0.7);
  transition: all var(--transition-normal);
  backdrop-filter: blur(15px);
  box-shadow: 0 6px 24px rgba(0, 122, 255, 0.3), 0 2px 6px rgba(0, 122, 255, 0.2);
  text-align: center;
  white-space: nowrap;
  z-index: 5;
}

.graph-node.central {
  background: linear-gradient(135deg, rgba(0, 122, 255, 1) 0%, rgba(90, 200, 250, 0.9) 100%);
  border: 3px solid rgba(255, 255, 255, 0.4);
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-sm);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.9);
  box-shadow: 0 8px 32px rgba(0, 122, 255, 0.5), 0 3px 12px rgba(0, 122, 255, 0.3), inset 0 1px 2px rgba(255, 255, 255, 0.2);
  z-index: 10;
}

.graph-node.connected:nth-child(2) {
  top: 15%;
  left: 10%;
}

.graph-node.connected:nth-child(3) {
  top: 15%;
  right: 10%;
}

.graph-node.connected:nth-child(4) {
  bottom: 10%;
  right: 25%;
  transform: scale(0.7);
}

.connection-lines {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}

.connection-lines line {
  stroke: rgba(0, 122, 255, 1);
  stroke-width: 3;
  stroke-dasharray: 0;
  stroke-dashoffset: 0;
  opacity: 1;
  transition: all var(--transition-slow);
  filter: drop-shadow(0 2px 6px rgba(0, 122, 255, 0.5));
}

.knowledge-graph:hover .connection-lines line {
  stroke: rgba(0, 122, 255, 1);
  stroke-width: 4;
  opacity: 1;
  filter: drop-shadow(0 3px 8px rgba(0, 122, 255, 0.7));
}

.knowledge-graph:hover .graph-node {
  transform: scale(0.8);
}

.knowledge-graph:hover .graph-node.central {
  transform: translate(-50%, -50%) scale(1);
}

.graph-node::before {
  content: '';
  position: absolute;
  top: -2px;
  left: -2px;
  right: -2px;
  bottom: -2px;
  background: linear-gradient(45deg, rgba(0, 122, 255, 0.6), rgba(90, 200, 250, 0.6), rgba(0, 122, 255, 0.6));
  border-radius: var(--radius-lg);
  z-index: -1;
  opacity: 0;
  transition: opacity var(--transition-normal);
  animation: pulse 3s ease-in-out infinite;
}

.knowledge-graph:hover .graph-node::before {
  opacity: 0.5;
}

@keyframes pulse {
  0%, 100% { opacity: 0; }
  50% { opacity: 0.3; }
}

.connection-insights {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.insight-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.insight-text {
  font-size: var(--font-size-base);
  color: rgba(255, 255, 255, 0.9);
  font-weight: var(--font-weight-medium);
}

/* Responsive Design for Feature Sections */
@media (max-width: 768px) {
  .feature-nav-items {
    gap: var(--space-4);
  }
  
  .feature-nav-item .nav-label {
    display: none;
  }
  
  .scroll-progress {
    width: 100px;
  }
  
  .feature-section {
    min-height: auto;
    padding: var(--space-20) 0;
  }
  
  .feature-container {
    grid-template-columns: 1fr;
    gap: var(--space-8);
    text-align: center;
  }
  
  .feature-title {
    font-size: var(--font-size-4xl);
  }
  
  .feature-description {
    font-size: var(--font-size-lg);
  }
  
  .analysis-demo,
  .search-demo,
  .organization-demo,
  .annotation-demo,
  .tagging-demo,
  .connections-demo {
    padding: var(--space-6);
  }
  
  .knowledge-graph {
    height: 250px;
  }
}

@media (max-width: 480px) {
  .feature-nav {
    top: 70px;
  }
  
  .feature-nav-container {
    padding: 0 var(--space-4);
    height: 50px;
  }
  
  .feature-nav-items {
    gap: var(--space-2);
  }
  
  .feature-section {
    padding: var(--space-16) 0;
  }
  
  .feature-container {
    padding: 0 var(--space-4);
    gap: var(--space-6);
  }
  
  .feature-title {
    font-size: var(--font-size-3xl);
  }
  
  .analysis-demo,
  .search-demo,
  .organization-demo,
  .annotation-demo,
  .tagging-demo,
  .connections-demo {
    padding: var(--space-4);
  }
  
  .knowledge-graph {
    height: 200px;
    padding: var(--space-4);
  }
  
  .graph-node {
    padding: var(--space-2);
    font-size: var(--font-size-xs);
  }
}

/* ========================================
   Bottom Email Section
   ======================================== */

.bottom-email-section {
  position: relative;
  padding: var(--space-20) 0;
  background: linear-gradient(135deg, 
    rgba(147, 51, 234, 0.1) 0%, 
    rgba(79, 70, 229, 0.08) 50%, 
    rgba(16, 185, 129, 0.1) 100%);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  overflow: hidden;
}

.bottom-email-section::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at center, 
    rgba(147, 51, 234, 0.03) 0%, 
    transparent 70%);
  animation: backgroundPulse 8s ease-in-out infinite;
}

.bottom-email-container {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 var(--space-6);
  position: relative;
  z-index: 2;
}

.bottom-email-content {
  text-align: center;
}

.bottom-email-title {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-dark-text);
  margin-bottom: var(--space-4);
  line-height: 1.2;
}

.bottom-email-description {
  font-size: var(--font-size-lg);
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: var(--space-8);
  line-height: 1.6;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.bottom-email-cta {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
}

.bottom-email-form {
  max-width: 500px;
  width: 100%;
}

/* Enhance existing form styles for bottom section */
.bottom-email-form .form-group {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

.bottom-email-form .form-group:focus-within {
  background: rgba(255, 255, 255, 0.12);
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.1), 
              0 8px 32px rgba(0, 0, 0, 0.3);
}

@keyframes backgroundPulse {
  0%, 100% { 
    opacity: 0.3;
    transform: scale(1);
  }
  50% { 
    opacity: 0.5;
    transform: scale(1.1);
  }
}

/* Responsive Design */
@media (max-width: 768px) {
  .bottom-email-section {
    padding: var(--space-16) 0;
  }
  
  .bottom-email-container {
    padding: 0 var(--space-4);
  }
  
  .bottom-email-title {
    font-size: var(--font-size-3xl);
  }
  
  .bottom-email-description {
    font-size: var(--font-size-base);
    margin-bottom: var(--space-6);
  }
  
  .bottom-email-form .form-group {
    flex-direction: column;
    gap: var(--space-3);
  }
  
  .bottom-email-form .cta-button {
    width: 100%;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .bottom-email-section {
    padding: var(--space-12) 0;
  }
  
  .bottom-email-title {
    font-size: var(--font-size-2xl);
  }
}