.revisions-layout {
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: 1rem;
    min-height: 320px;
}
.revisions-list {
    border: 1px solid var(--border-color);
    border-radius: 6px;
    max-height: 380px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}
.revision-item-btn {
    text-align: left;
    padding: 0.6rem 0.75rem;
    border: none;
    border-bottom: 1px solid var(--border-color);
    background: transparent;
    color: var(--text-color);
    cursor: pointer;
}
.revision-item-btn:hover {
    background: var(--bg-secondary);
}
.revisions-preview {
    border: 1px solid var(--border-color);
    border-radius: 6px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}
.revisions-preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0.75rem;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-secondary);
    font-size: 0.85rem;
    font-weight: 600;
}
.revisions-preview-code {
    margin: 0;
    padding: 0.75rem;
    font-size: 0.8rem;
    max-height: 340px;
    overflow: auto;
    white-space: pre-wrap;
    word-break: break-word;
}