#cart-empty-notice {
    position: fixed;
    z-index: 10000;
    right: 16px;
    bottom: 24px;
    left: 16px;
    display: flex;
    width: max-content;
    max-width: calc(100% - 32px);
    align-items: center;
    gap: 10px;
    margin: 0 auto;
    padding: 15px 20px;
    border-radius: 8px;
    background: #2563eb;
    color: white;
    box-shadow: 0 4px 12px rgba(0, 0, 0, .2);
    font: 500 14px/1.5 Inter, sans-serif;
    text-align: left;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: opacity 180ms ease, transform 180ms ease, visibility 180ms;
    pointer-events: none;
}
#cart-empty-notice svg { flex: 0 0 22px; }
#cart-empty-notice.is-visible { opacity: 1; visibility: visible; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) { #cart-empty-notice { transition: none; } }