:root {
    --primary-color: #ef4444;
    /* red-500 */
    --primary-color-dark: #dc2626;
    /* red-600 */
    --primary-color-light: #f87171;
    /* red-400 */
    --primary-color-rgb: 239, 68, 68;
    --primary-shadow: rgba(239, 68, 68, 0.3);
}