:root {
    /* Brand Colors */
    --color-brand-primary: #0056b3;
    --color-brand-secondary: #f8f9fa;
    --color-brand-accent: #ffc107;
    --color-white: #ffffff;
    --color-background-secondary: #f8f9fa;

    /* Semantic Colors */
    --color-success: #28a745;
    --color-danger: #dc3545;
    --color-warning: #ffc107;
    --color-info: #17a2b8;

    /* Text Colors */
    --color-text: #333333;
    --color-text-light: #6c757d;
    --color-text-muted: #6c757d;
    --color-text-secondary: #6c757d;

    /* Borders */
    --color-border: #dee2e6;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 2rem;
    --spacing-xl: 4rem;
    --spacing-xxl: 6rem;
    --spacing-2xl: 6rem;
    --spacing-3xl: 8rem;

    /* Border Radius & Shadows */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --border-radius-sm: var(--radius-sm);
    --border-radius-md: var(--radius-md);
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-soft: 0 8px 16px rgba(0,0,0,0.06);
    --shadow-dramatic: 0 16px 32px rgba(0,0,0,0.08);

    /* Layout & Breakpoints */
    --container-width: 1200px;
    --header-height: 80px;
    --breakpoint-md: 768px;
    --breakpoint-lg: 1024px;
    --breakpoint-wide: 1280px;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;

    /* Z-index */
    --z-header: 1000;
    --z-modal: 2000;

    /* Typography */
    --font-family-base: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-size-base: 1rem;
    --font-size-sm: 0.9rem;
    --font-size-xs: 0.85rem;
    --font-size-h1: 2.5rem;
    --font-size-h2: 2rem;
    --font-size-h3: 1.5rem;
}