/* Design tokens and CSS custom properties */
:root {
    /* Colors */
    --primary: #3498db;
    --primary-dark: #2980b9;
    --primary-glow: rgba(52, 152, 219, 0.3);
    
    --dark: #0a0e17;
    --dark-card: #111622;
    --surface: #1a1f2e;
    --border: #2a2f3e;
    
    --text-primary: #e8edf2;
    --text-secondary: #9aa4bf;
    --text-muted: #6c7a8a;
    
    --success: #27ae60;
    --warning: #f39c12;
    --error: #e74c3c;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.85rem;
    --font-size-base: 0.95rem;
    --font-size-lg: 1rem;
    --font-size-xl: 1.2rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.8rem;
    --font-size-4xl: 2.5rem;
    
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;
    
    --line-height-tight: 1.2;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;
    
    /* Borders */
    --border-radius-sm: 8px;
    --border-radius-md: 12px;
    --border-radius-lg: 24px;
    --border-radius-xl: 32px;
    --border-radius-full: 60px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 4px 15px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 15px 30px rgba(0, 0, 0, 0.3);
    --shadow-2xl: 0 15px 30px -10px rgba(0, 0, 0, 0.4);
    
    /* Transitions */
    --transition-fast: 0.15s ease-in-out;
    --transition-base: 0.2s ease-in-out;
    --transition-slow: 0.3s ease-in-out;
    
    /* Z-index */
    --z-header: 100;
    --z-modal: 1000;
    --z-tooltip: 1100;
    
    /* Layout */
    --max-width-container: 1400px;
    --breakpoint-mobile: 640px;
    --breakpoint-tablet: 768px;
    --breakpoint-desktop: 1024px;
}

@media (prefers-reduced-motion: reduce) {
    :root {
        --transition-fast: 0s;
        --transition-base: 0s;
        --transition-slow: 0s;
    }
}