/* Modern CSS Variables */
:root {
    --primary-blue: #2563eb;
    --primary-dark-blue: #1e40af;
    --secondary-blue: #3b82f6;
    --accent-blue: #60a5fa;
    --light-blue: #93c5fd;
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #2563eb 0%, #3b82f6 100%);
    --gradient-card: linear-gradient(135deg, #667eea15 0%, #764ba215 100%);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(37, 99, 235, 0.15);
    --shadow-lg: 0 8px 32px rgba(37, 99, 235, 0.2);
    --shadow-xl: 0 12px 48px rgba(37, 99, 235, 0.25);
    --border-radius: 16px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Smooth scroll behavior */
* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    background: linear-gradient(135deg, #f5f7fa 0%, #e3e8ef 100%);
    color: #1f2937;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}