/* Prevent body scrollbar — all scrolling happens inside panels */
html, body {
    overflow: hidden;
    height: 100%;
}

/* Prism's code-toolbar wrapper — participate in flex chain */
.code-toolbar {
    flex: 1 1 0;
    min-height: 0;
    display: flex;
    flex-direction: column;
}

/* Prism CodeBlock — fill remaining flex space, scroll internally */
pre[class*="language-"] {
    flex: 1 1 0;
    overflow: auto !important;
    min-height: 0;
    margin: 0;
}