#erp_mentionbox {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 400px;
    max-width: 90vw;
    background: white;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    padding: 16px;
    z-index: 1000;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

#erp_mentionbox_title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 12px;
    color: #333;
}

#erp_mentionbox_title span {
    color: #666;
    font-weight: 400;
}

#erp_mentionbox_input textarea {
    width: 90%;
    padding: 10px 12px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 14px;
    margin-bottom: 12px;
}

#erp_mentionbox_input textarea:focus {
    outline: none;
    border-color: #4a90e2;
}

#erp_mentionbox_results {
    max-height: 300px;
    overflow-y: auto;
    margin-bottom: 12px;
}

.erp_mentionbox_result {
    padding: 8px 12px;
    cursor: pointer;
    border-radius: 4px;
}

.erp_mentionbox_result:hover {
    background: #f5f5f5;
}

#erp_mentionbox_footer {
    display: flex;
    justify-content: flex-end;
}

#erp_mentionbox_footer_cancel {
    color: #4a90e2;
    cursor: pointer;
    font-size: 14px;
    padding: 4px 8px;
}

#erp_mentionbox_footer_cancel:hover {
    text-decoration: underline;
}