/* CSS Custom Properties (Variables) */
:root {
    /* Colors */
    --color-white: #ffffff;
    --color-black: #000000;
    --color-gray-50: #fafafa;
    --color-gray-100: #f5f5f5;
    --color-gray-200: #e5e5e5;
    --color-gray-300: #ddd;
    --color-gray-400: #ccc;
    --color-gray-500: #999;
    --color-gray-600: #666;
    --color-gray-700: #555;
    --color-gray-800: #333;
    --color-gray-900: #f0f0f0;
    
    /* Brand Colors */
    --color-brand-primary: #59abb3;
    --color-brand-primary-hover: #4a9299;
    
    /* Status Colors */
    --color-success: #e8f5e8;
    --color-success-text: #2d5a2d;
    --color-info: #e3f2fd;
    --color-info-text: #1565c0;
    --color-warning: #fff3e0;
    --color-warning-text: #ef6c00;
    --color-danger: #ffebee;
    --color-danger-text: #c62828;
    
    /* Typography */
    --font-family-primary: Cereal, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    --font-size-xs: 11px;
    --font-size-sm: 12px;
    --font-size-base: 14px;
    --font-size-lg: 18px;
    --font-size-xl: 20px;
    --font-size-2xl: 28px;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --line-height-base: 1.6;
    
    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 12px;
    --spacing-lg: 16px;
    --spacing-xl: 20px;
    --spacing-2xl: 24px;
    --spacing-3xl: 32px;
    
    /* Border Radius */
    --border-radius-sm: 4px;
    --border-radius-md: 6px;
    --border-radius-lg: 8px;
    --border-radius-full: 50%;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 25px rgba(0, 0, 0, 0.15);
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.2s ease;
    --transition-slow: 0.3s ease;
    
    /* Breakpoints */
    --breakpoint-sm: 480px;
    --breakpoint-md: 768px;
    --breakpoint-lg: 1024px;
    --breakpoint-xl: 1280px;
}