#add-to-cart-button {
    margin-top: 10px;
    padding: 10px 20px;
    font-size: 16px;
    border: none;
    background: #28a745;
    color: white;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s ease;
}
#add-to-cart-button:hover {
    background: #218838;
}
#cart-controls {
    border-radius: 10px;
    background-color: #bbbbbb;
}
#cart {
    max-width: 700px;
    margin: 20px auto;
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 6px rgba(0,0,0,0.1);
    padding: 20px;
    position: sticky;
    top: 20px;
    width: 320px;
    max-height: calc(100vh - 40px);
    overflow-y: auto;
    margin: 0;
}
@media (max-width: 900px) {
    .page-layout {
        flex-direction: column;
    }
    #cart {
        position: static;
        width: 100%;
        max-height: none;
        margin-top: 20px;
    }
}
.cart-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}
.cart-items {
    list-style: none;
    padding: 0;
    margin: 0;
}
.cart-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0;
    border-bottom: 1px solid #eee;
}
.cart-item:last-child {
    border-bottom: none;
}
.cart-item-name {
    font-weight: 600;
}
.cart-item-id {
    font-size: 0.85rem;
    color: #777;
}
.cart-item-price {
    color: #0073e6;
    font-weight: 500;
}
.cart-item-qty {
    color: #555;
}
.cart-empty {
    text-align: center;
    color: #777;
}