body { 
    font-family: 'Noto Sans JP', sans-serif; 
    background-color: #FFFBEB; 
}

/* Custom Alert Styles */
.custom-alert {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: white; 
    padding: 2rem;
    border-radius: 0.5rem;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
    z-index: 1000;
    text-align: center;
    width: 90%;
    max-width: 400px;
}

.custom-alert-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 999;
}

.custom-alert-button {
    margin-top: 1.5rem;
    background-color: #00A99D; 
    color: white; 
    font-weight: bold;
    padding: 0.75rem 1.5rem;
    border-radius: 0.375rem;
    transition: background-color 0.3s;
    cursor: pointer;
}

.custom-alert-button:hover {
    background-color: #008075; 
}

.hidden {
    display: none;
}