:root {
    --color-primary: #0d6efd;
    --color-secondary: #6c757d;
    --color-accent: #ff9900;
    --color-bg: #f8f9fa;
    --color-text: #212529;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --shadow-sm: 0 2px 6px rgba(0,0,0,.08);
    --shadow-md: 0 6px 18px rgba(0,0,0,.12);
    --transition-fast: .2s ease;
    --transition-base: .35s ease;
}