.fixed-buttons {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    display: flex;
    justify-content: space-between;
    background: #fff;
    padding: 10px;
    box-shadow: 0 -2px 5px rgba(0, 0, 0, 0.2);
    z-index: 9999;
}

.add-to-cart, .buy-now {
    flex: 1;
    margin: 0 10px;
    padding: 10px;
    font-size: 16px;
    text-align: center;
    cursor: pointer;
    border: none;
    color: #fff;
}

.add-to-cart {
    background: #0071a1;
}

.buy-now {
    background: #ff5500;
}

.buy-now:disabled {
    background: #ccc;
    cursor: not-allowed;
}