/* CSS Variables - Design System */
:root {
    /* Colors */
    --color-primary: #E74C3C;        /* Red for CTAs */
    --color-text-dark: #2C3E50;      /* Main text */
    --color-text-light: #7F8C8D;     /* Secondary text */
    --color-background: #FFFFFF;      /* White background */
    --color-background-alt: #F8F9FA;  /* Light gray sections */
    --color-nav-hover: #5DADE2;       /* Navigation hover */
    --color-overlay: rgba(0,0,0,0.7); /* Image overlays */
    --color-overlay-light: rgba(0,0,0,0.4); /* Lighter overlay */
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-base: 16px;
    --font-size-sm: 0.875rem;
    --font-size-lg: 1.125rem;
    --font-size-h1: clamp(2.5rem, 5vw, 4rem);
    --font-size-h2: clamp(2rem, 4vw, 3rem);
    --font-size-h3: clamp(1.5rem, 3vw, 2rem);
    --font-size-h4: 1.25rem;
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --line-height: 1.6;
    --line-height-heading: 1.2;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
    --spacing-xxl: 6rem;
    
    /* Layout */
    --max-width: 1200px;
    --header-height: 80px;
    --header-height-mobile: 60px;
    
    /* Transitions */
    --transition-base: all 0.3s ease;
    --transition-fast: all 0.2s ease;
    
    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
}