.diff-dropdown {
    position: relative;
    display: inline-block;
}

.diff-btn {
    background: var(--surface-hover);
    color: var(--text-primary);
    padding: 6px 14px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 15px;
    transition: background 0.2s ease;
}

.diff-btn:hover {
    background: var(--surface-elevated);
}

.diff-menu {
    display: none;
    position: absolute;
    top: 40px;
    left: 0;
    width: 140px;
    background: var(--surface-muted);
    border: 1px solid var(--surface-border);
    border-radius: 8px;
    padding: 6px 0;
    z-index: 9999;
    box-shadow: var(--shadow-elevated);
}

.diff-option {
    padding: 10px 14px;
    cursor: pointer;
    color: var(--text-primary);
    font-size: 14px;
    transition: background 0.18s ease;
}

.diff-option:hover {
    background: var(--surface-hover);
}