:root {
  --primary: #1e3a8a;
  --secondary: #059669;
  --accent: #ea580c;
  --neutral-50: #f8fafc;
  --neutral-500: #64748b;
  --neutral-800: #1e293b;
  --success: #10b981;
  --warning: #f59e0b;
  
  --container-max-width: 1200px;
  --spacing-xs: 8px;
  --spacing-sm: 16px;
  --spacing-md: 24px;
  --spacing-lg: 32px;
  --spacing-xl: 48px;
  --spacing-2xl: 64px;
  
  --border-radius: 8px;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
  
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Monaco', 'Cascadia Code', monospace;
  
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.375vw, 1rem);
  --text-base: clamp(1rem, 0.9rem + 0.5vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.625vw, 1.25rem);
  --text-xl: clamp(1.25rem, 1.1rem + 0.75vw, 1.5rem);
  --text-2xl: clamp(1.5rem, 1.3rem + 1vw, 2rem);
  --text-3xl: clamp(1.875rem, 1.6rem + 1.375vw, 2.5rem);
  --text-4xl: clamp(2.25rem, 1.9rem + 1.75vw, 3.5rem);
}

/* Dark theme variables */
[data-theme="dark"] {
  --primary: #60a5fa;
  --secondary: #34d399;
  --accent: #fbbf24;
  --neutral-50: #0f172a;
  --neutral-500: #94a3b8;
  --neutral-800: #f8fafc;
  --success: #34d399;
  --warning: #fbbf24;
  
  /* Dark theme specific backgrounds */
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-tertiary: #334155;
  --border-color: #475569;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 90px; /* Account for fixed header */
}

/* Smoother section transitions */
html, body {
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
}

@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--neutral-800);
  background: linear-gradient(135deg, var(--neutral-50) 0%, #ffffff 50%, var(--neutral-50) 100%);
  min-height: 100vh;
  position: relative;
  transition: background-color 0.3s ease, color 0.3s ease;
  overflow-x: hidden;
  overflow-y: auto;
}

/* Dark theme body styles */
[data-theme="dark"] body {
  background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 50%, var(--bg-primary) 100%);
  color: var(--neutral-800);
}

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

@media (max-width: 768px) {
  .container {
    padding: 0 var(--spacing-sm);
  }
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: var(--spacing-sm);
}

h1 { font-size: var(--text-4xl); }
h2 { font-size: var(--text-3xl); }
h3 { font-size: var(--text-2xl); }
h4 { font-size: var(--text-xl); }
h5 { font-size: var(--text-lg); }
h6 { font-size: var(--text-base); }

p {
  margin-bottom: var(--spacing-sm);
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--accent);
}

.btn {
  display: inline-flex;
  align-items: center;
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--text-sm);
  font-weight: 500;
  border: none;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
  gap: var(--spacing-xs);
}

.btn-primary {
  background: linear-gradient(145deg, var(--primary) 0%, #1e40af 100%);
  color: white;
  box-shadow: 0 4px 15px rgba(30, 58, 138, 0.3);
  position: relative;
  overflow: hidden;
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s;
}

.btn-primary:hover::before {
  left: 100%;
}

.btn-primary:hover {
  background: linear-gradient(145deg, #1e40af 0%, var(--primary) 100%);
  box-shadow: 0 8px 25px rgba(30, 58, 138, 0.4);
  transform: translateY(-2px);
}

.btn-secondary {
  background-color: var(--secondary);
  color: white;
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  background-color: #047857;
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.btn-outline::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 0;
  height: 100%;
  background: linear-gradient(145deg, var(--primary) 0%, #1e40af 100%);
  transition: width 0.3s ease;
  z-index: -1;
}

.btn-outline:hover::before {
  width: 100%;
}

.btn-outline:hover {
  color: white;
  border-color: var(--primary);
  transform: translateY(-1px);
  box-shadow: 0 4px 15px rgba(30, 58, 138, 0.2);
}

.grid {
  display: grid;
  gap: var(--spacing-md);
}

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

@media (max-width: 1024px) {
  .grid-cols-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .grid-cols-2,
  .grid-cols-3 { grid-template-columns: 1fr; }
}

.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

.items-center {
  align-items: center;
}

.justify-center {
  justify-content: center;
}

.justify-between {
  justify-content: space-between;
}

.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }

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

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }
.mb-2xl { margin-bottom: var(--spacing-2xl); }

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }
.mt-2xl { margin-top: var(--spacing-2xl); }

/* Simplified utility classes */
.section {
  padding: var(--spacing-2xl) 0;
  position: relative;
}

.card {
  background: white;
  border-radius: 12px;
  padding: var(--spacing-lg);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  border: 1px solid #e2e8f0;
  transition: all 0.2s ease;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.glass-effect {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.gradient-text {
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: 700;
}

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

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Simplified scroll animations for better performance */
.section,
.dashboard-card,
.feature-card,
.step-card {
  opacity: 1;
  transform: translateY(0);
}

/* Removed scroll progress indicator for better performance */

/* Professional loading animation */
body.loading {
  overflow: hidden;
}

body.loading::after {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--neutral-50) 0%, #ffffff 50%, var(--neutral-50) 100%);
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fadeOut 0.5s ease 0.3s forwards;
}

@keyframes fadeOut {
  to {
    opacity: 0;
    visibility: hidden;
  }
}

/* Enhanced hero section with parallax support */
.hero {
  position: relative;
  z-index: 1;
  background: linear-gradient(135deg, rgba(30, 58, 138, 0.05) 0%, transparent 50%, rgba(16, 185, 129, 0.05) 100%);
}

.py-sm { padding-top: var(--spacing-sm); padding-bottom: var(--spacing-sm); }
.py-md { padding-top: var(--spacing-md); padding-bottom: var(--spacing-md); }
.py-lg { padding-top: var(--spacing-lg); padding-bottom: var(--spacing-lg); }
.py-xl { padding-top: var(--spacing-xl); padding-bottom: var(--spacing-xl); }
.py-2xl { padding-top: var(--spacing-2xl); padding-bottom: var(--spacing-2xl); }

.px-sm { padding-left: var(--spacing-sm); padding-right: var(--spacing-sm); }
.px-md { padding-left: var(--spacing-md); padding-right: var(--spacing-md); }
.px-lg { padding-left: var(--spacing-lg); padding-right: var(--spacing-lg); }

.card {
  background: white;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-sm);
  padding: var(--spacing-md);
  transition: box-shadow 0.2s ease;
}

.card:hover {
  box-shadow: var(--shadow-md);
}

.hidden {
  display: none;
}

@media (max-width: 768px) {
  .hidden-mobile {
    display: none;
  }
}

@media (min-width: 769px) {
  .hidden-desktop {
    display: none;
  }
}

code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background-color: var(--neutral-500);
  color: white;
  padding: 2px 6px;
  border-radius: 4px;
}

pre {
  background-color: var(--neutral-800);
  color: var(--neutral-50);
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  line-height: 1.5;
}

pre code {
  background: none;
  padding: 0;
  color: inherit;
}

.section {
  padding: var(--spacing-2xl) 0;
}

@media (max-width: 768px) {
  .section {
    padding: var(--spacing-xl) 0;
  }
}