{# Settings → Loss carryforwards section.

   Lists every relevant tax year (one row per year from earliest_trade+1
   through current_year+1, plus any years with a user override that fall
   outside that span). Source label distinguishes user override vs derived
   replay vs none.

   Read-only in this task — Edit / Reset to derived buttons land in Task 8
   (POST endpoints). They are rendered now but currently no-op until those
   handlers exist; HTMX swaps will 404 gracefully without breaking layout. #}

<section id="settings-carryforward" class="space-y-3 text-[13px]">
  <header>
    <h3 class="text-[14px] font-semibold m-0 mb-1">Loss carryforwards</h3>
    <p class="text-label-2 text-[12px] m-0">
      Federal-level. ST and LT tracked separately per §1212(b) cross-category netting.
    </p>
  </header>

  {% if not has_history and not rows %}
    <p class="text-label-2 text-[12px] m-0">
      No prior-year history found. If you have an unused capital-loss carryforward
      from a previous 1040 Schedule D, enter it manually below.
    </p>
  {% endif %}

  {% if rows %}
  <table class="w-full text-[12px]">
    <thead class="text-label-2">
      <tr class="border-b" style="border-color: var(--color-hairline);">
        <th class="text-left py-1 font-medium">Tax year (into)</th>
        <th class="text-right py-1 font-medium">ST carryforward</th>
        <th class="text-right py-1 font-medium">LT carryforward</th>
        <th class="text-left py-1 font-medium">Source</th>
        <th class="text-right py-1 font-medium">Actions</th>
      </tr>
    </thead>
    <tbody>
      {% for row in rows %}
      <tr class="border-b" style="border-color: var(--color-hairline);">
        <td class="py-1 font-mono">{{ row.year }}</td>
        <td class="py-1 text-right font-mono">${{ '{:,.2f}'.format(row.st) }}</td>
        <td class="py-1 text-right font-mono">${{ '{:,.2f}'.format(row.lt) }}</td>
        <td class="py-1">
          {% if row.source == 'user' %}
            <span class="px-1.5 py-0.5 rounded bg-surface text-text"
                  style="border:0.5px solid var(--color-hairline);">from override</span>
          {% elif row.source == 'derived' %}
            <span class="px-1.5 py-0.5 rounded bg-surface text-label-2"
                  style="border:0.5px solid var(--color-hairline);">derived from history</span>
          {% else %}
            <span class="text-label-3">none</span>
          {% endif %}
        </td>
        <td class="py-1 text-right">
          <button type="button"
                  hx-get="/settings/carryforward/edit?year={{ row.year }}"
                  hx-target="closest tr"
                  hx-swap="outerHTML"
                  class="text-text hover:underline">Edit</button>
          {% if row.source == 'user' %}
          <button type="button"
                  hx-post="/settings/carryforward/reset?year={{ row.year }}"
                  hx-target="#settings-carryforward"
                  hx-swap="outerHTML"
                  class="text-label-2 hover:underline ml-2">Reset to derived</button>
          {% endif %}
        </td>
      </tr>
      {% endfor %}
    </tbody>
  </table>
  {% endif %}

  <footer class="text-label-3 text-[11px] m-0">
    Source of truth: your 1040 Schedule D Capital Loss Carryover Worksheet
    (line 6 / 14). Derived values replay your imported trade history and apply
    §1212(b) cross-category netting and the §1211 $3,000 ordinary cap.
  </footer>
</section>