.donation-notification {
    position: fixed;
    bottom: 20px;
    left: 20px;
    background: rgba(0, 0, 0, 0.9);
    color: #fff;
    padding: 12px 18px;
    border-radius: 14px;
    font-size: 0.9rem;
    display: none;
    z-index: 9999;
    box-shadow: 0 10px 30px rgba(0,0,0,0.45);
}
.donation-notification.show {
    display:block;
    animation: slideIn 0.35s ease-out, fadeOut 0.4s ease-in 4.2s forwards;
}
@keyframes slideIn {
    from{transform:translateY(20px);opacity:0;}
    to{transform:translateY(0);opacity:1;}
}
@keyframes fadeOut {
    to{transform:translateY(10px);opacity:0;}
}