.popup-alert {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    max-width: 400px;
    width: 90%;
    padding: 15px 20px;
    border-radius: 8px;
    box-shadow: 0 6px 15px rgba(0,0,0,0.2);
    font-weight: 500;
    z-index: 9999;
    display: flex;
    justify-content: space-between;
    align-items: center;
    animation: fadeIn 0.4s ease-out;
}

.popup-alert.success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.popup-alert.error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.popup-alert .close-btn {
    background: transparent;
    border: none;
    font-size: 18px;
    font-weight: bold;
    cursor: pointer;
    color: inherit;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}