body, html {
    margin: 0;
    padding: 0;
    font-family: Arial, sans-serif;
    height: 100%;
}

#app {
    display: flex;
    flex-direction: column;
    height: 100%;
}

#toolbar {
    background-color: #f0f0f0;
    padding: 10px;
    display: flex;
    gap: 10px;
}

#mainContent {
    display: flex;
    flex: 1;
}

#componentList {
    width: 200px;
    background-color: #f9f9f9;
    padding: 10px;
    overflow-y: auto;
}

#editor {
    flex: 1;
    display: flex;
}

#codeEditor {
    width: 50%;
    display: flex;
    flex-direction: column;
}

#htmlEditor, #cssEditor, #jsEditor {
    height: 33.33%;
}

#previewPane {
    width: 50%;
    border-left: 1px solid #ccc;
    padding: 10px;
    overflow-y: auto;
}

.CodeMirror {
    height: 100%;
}

.component {
    background-color: #fff;
    border: 1px solid #ddd;
    padding: 10px;
    margin-bottom: 10px;
    cursor: move;
}

.editable {
    border: 1px dashed #999;
    padding: 5px;
    margin: 5px 0;
}

.editable:focus {
    outline: none;
    border-color: #0066cc;
}