.alert-box {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%) scale(0.8);
    padding: 14px 24px;
    border-radius: 10px;
    color: white;
    font-size: 17px;
    font-weight: 600;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
    opacity: 0;
    transition: all 0.35s ease;
    z-index: 9999;
    pointer-events: none;
}

.alert-show {
    opacity: 1;
    transform: translateX(-50%) scale(1);
}

.alert-success {
    background: #2ecc71;
}

.alert-error {
    background: #e74c3c;
}

.alert-info {
    background: #3498db;
}