/* استایل‌ها فقط یک بار تعریف شوند */
.message-container {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10000;
    display: flex;
    flex-direction: column;
    gap: 12px;
    width: 90%;
    max-width: 400px;
    pointer-events: none;
}

.message-item {
    pointer-events: auto;
    background-color: white;
    border-radius: 12px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    padding: 15px 30px;
    text-align: center;
    font-weight: bold;
    font-size: 16px;
    color: white;
    animation: slideDownSmooth 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 15px;
}

.message-item.success {
    background-color: #28a745;
}

.message-item.info {
    background-color: #17a2b8;
}

.message-item.error {
    background-color: #dc3545;
}

.message-item.warning {
    background-color: #ffc107;
    color: #333;
}

.message-item.default {
    background-color: #6c757d;
}

.close-btn {
    background: transparent;
    border: none;
    color: white;
    font-size: 20px;
    cursor: pointer;
    font-weight: bold;
    padding: 0 5px;
    line-height: 1;
}

.message-item.warning .close-btn {
    color: #333;
}

@keyframes slideDownSmooth {
    0% {
        opacity: 0;
        transform: translateY(-100px);
    }
    60% {
        opacity: 0.8;
        transform: translateY(10px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideUpSmooth {
    0% {
        opacity: 1;
        transform: translateY(0);
    }
    100% {
        opacity: 0;
        transform: translateY(-100px);
    }
}