body {
    font-family: 'Arial', sans-serif;
    margin: 0;
    padding: 20px;
    background-color: #f5f5f5;
    color: #333;
}

h1 {
    color: #2c3e50;
    border-bottom: 2px solid #3498db;
    padding-bottom: 10px;
}

.controls {
    background-color: white;
    padding: 15px;
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    margin-bottom: 20px;
}

select, button {
    padding: 8px 12px;
    margin: 0 5px;
    border-radius: 4px;
    border: 1px solid #ddd;
    font-size: 14px;
}

button {
    background-color: #3498db;
    color: white;
    border: none;
    cursor: pointer;
    transition: background-color 0.3s;
}

button:hover {
    background-color: #2980b9;
}

.preview-section {
    background-color: white;
    padding: 15px;
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    margin-bottom: 20px;
}

.preview-controls {
    margin-bottom: 15px;
}

#previewContainer {
    border: 1px dashed #ccc;
    padding: 15px;
    min-height: 200px;
    background-color: #999999;
}

.button-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 0px;
    margin-top: 0px;
}

.button-preview {
    border: 0px solid #eee;
    padding: 0px;
    border-radius: 4px;
}

.button-state {
    padding: 0px;
    margin: 1px;
    text-align: center;
}

#loadingOverlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    color: white;
    font-size: 18px;
}

.label-preview {
    display: flex;
    flex-wrap: wrap;
}

.label-item {
    padding: 5px;
    border-bottom: 1px solid #eee;
}

select {
    padding: 8px;
    margin-right: 10px;
    cursor: pointer;
}