.ms-options-wrap {
    position: relative;
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
}

.ms-options-wrap,
.ms-options-wrap * {
    box-sizing: border-box;
}

.ms-options-wrap > button:focus,
.ms-options-wrap > button {
    position: relative;
    width: 100%;
    text-align: left;
    border: 1px solid #aaa;
    background-color: #fff;
    padding: 10px 30px 10px 10px;
    margin-top: 1px;
    font-size: 14px;
    color: #333;
    outline-offset: -2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    border-radius: 4px;
    cursor: pointer;
}

.ms-options-wrap > button:after {
    content: '▼';
    position: absolute;
    top: 50%;
    right: 10px;
    transform: translateY(-50%);
    font-size: 12px;
    color: #666;
}

.ms-options-wrap > .ms-options {
    position: absolute;
    left: 0;
    width: 100%;
    margin-top: 1px;
    margin-bottom: 20px;
    background: white;
    z-index: 2000;
    border: 1px solid #aaa;
    border-radius: 4px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    overflow: hidden;
    visibility: hidden;
}

.ms-options-wrap > .ms-options > .ms-search {
    padding: 10px;
    border-bottom: 1px solid #eee;
}

.ms-options-wrap > .ms-options > .ms-search input {
    width: 100%;
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 4px;
    outline: none;
    font-size: 14px;
}

.ms-options-wrap > .ms-options > ul {
    grid-template-columns: auto;
    gap: 5px;
    padding: 10px;
    max-height: 400px;
    overflow-y: auto;
    margin: 0;
    list-style: none;
}

.ms-options-wrap > .ms-options > ul label {
    position: relative;
    display: flex;
    align-items: center;
    padding: 8px 8px 8px 30px;
    margin: 0;
    border: 1px solid transparent;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.2s ease;
}

.ms-options-wrap > .ms-options > ul label:hover {
    background-color: #f5f5f5;
    border-color: #ddd;
}

.ms-options-wrap > .ms-options > ul input[type="checkbox"] {
    position: absolute;
    left: 8px;
    top: 50%;
    transform: translateY(-50%);
    margin: 0;
    width: 16px;
    height: 16px;
}

.ms-options-wrap > .ms-options > ul li.selected label {
    background-color: #e8f0fe;
    border-color: #c6dafc;
    color: #1a73e8;
}

.ms-options-wrap > .ms-options .ms-selectall {
    display: block;
    padding: 10px;
    text-align: center;
    background-color: #f8f9fa;
    border-bottom: 1px solid #eee;
    font-size: 14px;
    color: #1a73e8;
    cursor: pointer;
    transition: background-color 0.2s ease;
}

.ms-options-wrap > .ms-options .ms-selectall:hover {
    background-color: #e8f0fe;
    text-decoration: none;
}

@media (max-width: 768px) {
    .ms-options-wrap > .ms-options > ul {
        grid-template-columns: auto;
    }
}

@media (max-width: 480px) {
    .ms-options-wrap > .ms-options > ul {
        grid-template-columns: auto;
    }
}