* { box-sizing: border-box; }

body.dark {
    margin: 0;
    background: #0b0b0b;
    color: #fff;
    font-family: Arial, sans-serif;
}

.top-bar {
    height: 45px;
    background: #111;
    padding: 6px;
    display: flex;
    gap: 6px;
    border-bottom: 1px solid #222;
}

.top-bar input,
.top-bar button {
    background: #1c1c1c;
    color: #fff;
    border: 1px solid #333;
    padding: 5px 8px;
}

.toolbar {
    height: 40px;
    background: #181818;
    padding: 5px;
    display: flex;
    gap: 5px;
    border-bottom: 1px solid #222;
}

.toolbar button,
.toolbar select,
.toolbar input {
    background: #222;
    color: #fff;
    border: 1px solid #333;
    padding: 4px 6px;
}

.container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    height: calc(100vh - 85px);
}

.editor, .preview {
    height: 100%;
}

#htmlEditor {
    height: 100%;
}

.preview iframe {
    width: 100%;
    height: 100%;
    border: none;
    background: #fff;
}

.hidden {
    display: none;
}