.achievement-notification {
    position: fixed;
    top: 20px;
    right: 20px;
    width: 300px;
    padding: 20px;
    background: #2c3e50;
    color: white;
    border-radius: 10px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.3);
    z-index: 9999;
    display: flex;
    align-items: center;
    transition: transform 0.3s;
}

.achievement-icon {
    font-size: 48px;
    margin-right: 20px;
    animation: popIn 0.5s;
}

@keyframes popIn {
    0% {
        transform: scale(0);
    }
    60% {
        transform: scale(1.2);
    }
    100% {
        transform: scale(1);
    }
}

.achievement-content {
    flex: 1;
}

.achievement-name {
    margin: 0;
    font-size: 18px;
    font-weight: 600;
}

.achievement-desc {
    margin: 8px 0 0;
    font-size: 14px;
}