Maybe/app/views/budget_categories/index.html.erb

<%= content_for :header_nav do %>
  <%= render "budgets/budget_nav", budget: @budget %>
<% end %>

<%= content_for :previous_path, edit_budget_path(@budget) %>
<%= content_for :cancel_path, budget_path(@budget) %>

<div>
  <div class="space-y-6">
    <div class="text-center space-y-2">
      <h1 class="text-3xl text-gray-900 font-medium">Edit your category budgets</h1>
      <p class="text-gray-500 text-sm max-w-md mx-auto">
        Adjust category budgets to set spending limits. Unallocated funds will be automatically assigned as uncategorized.
      </p>
    </div>

    <div class="mx-auto max-w-lg">
      <% if @budget.family.categories.empty? %>
        <div class="bg-white shadow-xs border border-gray-200 rounded-lg p-4">
          <%= render "budget_categories/no_categories" %>
        </div>
      <% else %>
        <div class="max-w-md mx-auto">
          <%= render "budget_categories/allocation_progress", budget: @budget %>

          <div class="space-y-4 mb-4">
            <% BudgetCategory::Group.for(@budget_categories).sort_by(&:name).each do |group| %>
              <div class="space-y-4">
                <%= render "budget_categories/budget_category_form", budget_category: group.budget_category %>

                <div class="space-y-4">
                  <% group.budget_subcategories.each do |budget_subcategory| %>
                    <div class="w-full flex items-center gap-4">
                      <div class="ml-4 flex items-center justify-center text-gray-400">
                        <%= lucide_icon "corner-down-right", class: "w-5 h-5 shrink-0" %>
                      </div>

                      <%= render "budget_categories/budget_category_form", budget_category: budget_subcategory %>
                    </div>
                  <% end %>
                </div>
              </div>
            <% end %>

            <%= render "budget_categories/uncategorized_budget_category_form", budget: @budget %>
          </div>

          <% if @budget.allocations_valid? %>
            <%= link_to "Confirm",
                budget_path(@budget),
                class: "block btn btn--primary w-full text-center" %>
          <% else %>
            <span class="block btn btn--secondary w-full text-center text-gray-400 cursor-not-allowed">
              Confirm
            </span>
          <% end %>
        </div>
      <% end %>
    </div>
  </div>
</div>