:root {
    --cart-bg: #ffffff;
    --cart-surface: #f9fafb;
    --cart-text: #111827;
    --cart-muted: #6b7280;
    --cart-border: #e5e7eb;
    --cart-primary: #111827;
    --cart-primary-fg: #ffffff;
    --cart-accent: #2563eb;
    --cart-radius: 10px;
}