:root{--color-primary:#1976d2;--color-secondary:#f50057;--color-danger:#f44336;--color-success:#4caf50;--color-warning:#ff9800;--color-text:#333;--color-background:#fff;--spacing-small:5px;--spacing-medium:10px;--spacing-large:20px}@media (max-width:768px){body{margin:0;padding:0}}