:root {
  /* Color System */
  --color-primary: #6A0DAD;
  --color-primary-light: #8A2BE2;
  --color-primary-dark: #4B0082;
  
  --color-secondary: #FFD700;
  --color-secondary-light: #FFEB3B;
  --color-secondary-dark: #FFC107;
  
  --color-accent: #20B2AA;
  --color-accent-light: #5DDED9;
  --color-accent-dark: #00958D;
  
  --color-success: #4CAF50;
  --color-warning: #FF9800;
  --color-error: #F44336;
  
  --color-background: #121212;
  --color-surface: #1E1E1E;
  --color-text: #FFFFFF;
  --color-text-secondary: rgba(255, 255, 255, 0.7);
  
  /* Typography */
  --font-heading: 'Poppins', sans-serif;
  --font-body: 'Open Sans', sans-serif;
  
  /* Spacing System (8px grid) */
  --space-0: 0;
  --space-1: 0.5rem;  /* 8px */
  --space-2: 1rem;    /* 16px */
  --space-3: 1.5rem;  /* 24px */
  --space-4: 2rem;    /* 32px */
  --space-5: 2.5rem;  /* 40px */
  --space-6: 3rem;    /* 48px */
  --space-7: 3.5rem;  /* 56px */
  --space-8: 4rem;    /* 64px */
  
  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 1rem;
  
  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.15);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.25);
  
  /* Animation */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* Reset & Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.5;
  color: var(--color-text);
  background-color: var(--color-background);
  overflow-x: hidden;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-2);
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  line-height: 1.2;
  font-weight: 700;
  margin-bottom: var(--space-2);
}

h1 {
  font-size: 3.5rem;
  font-weight: 800;
}

h2 {
  font-size: 2.5rem;
}

h3 {
  font-size: 1.75rem;
}

p {
  margin-bottom: var(--space-2);
}

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

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

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

.btn {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  background-color: var(--color-primary);
  color: white;
  border: none;
  border-radius: var(--radius-md);
  font-family: var(--font-heading);
  font-weight: 600;
  text-transform: uppercase;
  cursor: pointer;
  transition: all var(--transition-normal);
  text-align: center;
  box-shadow: var(--shadow-sm);
}

.btn:hover {
  background-color: var(--color-primary-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  color: white;
}

.section-title {
  text-align: center;
  margin-bottom: var(--space-5);
  position: relative;
  display: inline-block;
  left: 50%;
  transform: translateX(-50%);
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background: var(--color-secondary);
  border-radius: var(--radius-sm);
}

section {
  padding: var(--space-6) 0;
  position: relative;
}