vault171/app/views/items/_list.html.erb

<div class="bg-white border border-gray-200 rounded-xl shadow-sm overflow-hidden">
  
  <!-- ========================================================================= -->
  <!-- 1. HANDY-ANSICHT: OPTIMIERTE INVENTAR-CARDS (md:hidden) -->
  <!-- ========================================================================= -->
  <div class="block md:hidden divide-y divide-gray-200 bg-white">
    <% items.each do |item| %>
      <div class="p-4 space-y-3 hover:bg-gray-50/50 transition">
        
        <!-- Zeile 1: Name, Kategorie & die markante Sticker-ID Plakette -->
        <div class="flex justify-between items-start gap-3">
          <div class="min-w-0">
            <h4 class="font-bold text-gray-900 text-sm leading-snug truncate"><%= item.name %></h4>
            <p class="text-xs text-gray-500 font-medium mt-0.5"><%= item.category.name %></p>
          </div>
          
          <!-- Rechte Box für ID und den optimal platzierten Preis direkt darunter -->
          <div class="flex flex-col items-end gap-1.5 shrink-0">
            <span class="inline-flex items-center font-mono font-black text-xs text-white bg-blue-600 px-2.5 py-1 rounded-md shadow-sm tracking-wider">
              #<%= item.sticker_id %>
            </span>
            <span class="text-xs font-bold text-gray-600 font-mono bg-gray-100 px-1.5 py-0.5 rounded">
              <%= number_to_currency(item.price, unit: "€", separator: ",", delimiter: ".", format: "%n %u") %>
            </span>
          </div>
        </div>

        <!-- Zeile 2: Technische Gerätedaten (SKU & Seriennummer) -->
        <div class="grid grid-cols-2 gap-3 bg-gray-50 p-2.5 rounded-lg text-xs font-mono text-gray-600">
          <div class="truncate">
            <span class="text-gray-400 font-sans block text-[10px] uppercase font-bold tracking-wider mb-0.5">SKU</span>
            <%= item.sku %>
          </div>
          <div class="truncate">
            <span class="text-gray-400 font-sans block text-[10px] uppercase font-bold tracking-wider mb-0.5">Seriennummer</span>
            <%= item.serial_number %>
          </div>
        </div>

        <!-- Zeile 3: Standort & Quick-Actions -->
        <div class="flex justify-between items-center pt-1">
          <!-- Standort-Badge -->
          <div class="text-xs">
            <% if item.user.present? %>
              <span class="inline-flex items-center gap-1 text-gray-900 font-semibold bg-green-50 text-green-800 px-2 py-1 rounded-md border border-green-200">
                👤 <%= item.user.name %>
              </span>
            <% elsif item.room.present? %>
              <span class="inline-flex items-center gap-1 text-gray-700 bg-blue-50 text-blue-800 px-2 py-1 rounded-md border border-blue-200">
                📍 <%= item.room.name %>
              </span>
            <% else %>
              <span class="inline-flex items-center gap-1 text-amber-800 bg-amber-50 px-2 py-1 rounded-md border border-amber-200 font-medium">
                📦 Hauptlager
              </span>
            <% end %>
          </div>

          <!-- Aktions-Icons -->
          <div class="flex items-center gap-1 shrink-0">
            <%= link_to item_path(item), class: "p-2 text-gray-500 hover:text-blue-600 hover:bg-blue-50 rounded-lg border border-gray-200 bg-white shadow-sm" do %>
              <svg class="h-4 w-4" fill="none" viewBox="0 0 24 24" stroke-width="2" stroke="currentColor"><path stroke-linecap="round" stroke-linejoin="round" d="M2.036 12.322a1.012 1.012 0 0 1 0-.639C3.423 7.51 7.36 4.5 12 4.5c4.638 0 8.573 3.007 9.963 7.178.07.207.07.431 0 .639C20.577 16.49 16.64 19.5 12 19.5c-4.638 0-8.573-3.007-9.963-7.178Z" /><path stroke-linecap="round" stroke-linejoin="round" d="M15 12a3 3 0 1 1-6 0 3 3 0 0 1 6 0Z" /></svg>
            <% end %>
            <%= link_to edit_item_path(item), class: "p-2 text-gray-500 hover:text-amber-600 hover:bg-amber-50 rounded-lg border border-gray-200 bg-white shadow-sm" do %>
              <svg class="h-4 w-4" fill="none" viewBox="0 0 24 24" stroke-width="2" stroke="currentColor"><path stroke-linecap="round" stroke-linejoin="round" d="m16.862 4.487 1.687-1.688a1.875 1.875 0 1 1 2.652 2.652L10.582 16.07a4.5 4.5 0 0 1-1.897 1.13L6 18l.8-2.685a4.5 4.5 0 0 1 1.13-1.897l8.932-8.931Zm0 0L19.5 7.125M18 14v4.75A2.25 2.25 0 0 1 15.75 21H5.25A2.25 2.25 0 0 1 3 18.75V8.25A2.25 2.25 0 0 1 5.25 6H10" /></svg>
            <% end %>
          </div>
        </div>

      </div>
    <% end %>
  </div>

  <!-- ========================================================================= -->
  <!-- 2. DESKTOP-ANSICHT: STICKY-TABELLE (hidden md:block) -->
  <!-- ========================================================================= -->
  <div class="hidden md:block overflow-x-auto max-h-[calc(100vh-12rem)]">
    <table class="min-w-full divide-y divide-gray-200 text-sm">
      <thead class="bg-gray-50 sticky top-0 z-20 shadow-[0_1px_0_0_rgba(229,231,235,1)]">
        <tr>
          <th scope="col" class="px-6 py-3 text-start font-semibold text-gray-500 uppercase tracking-wider">Artikel / Details</th>
          <th scope="col" class="px-6 py-3 text-start font-semibold text-gray-500 uppercase tracking-wider">Seriennummer (SN)</th>
          <th scope="col" class="px-6 py-3 text-start font-semibold text-gray-500 uppercase tracking-wider">Aktueller Standort / Inhaber</th>
          <th scope="col" class="px-6 py-3 text-start font-semibold text-gray-500 uppercase tracking-wider">Sticker-ID</th>
          <th scope="col" class="px-6 py-3 text-end font-semibold text-gray-500 uppercase tracking-wider">Wert</th>
          <th scope="col" class="px-6 py-3 text-end font-semibold text-gray-500 uppercase tracking-wider">Aktionen</th>
        </tr>
      </thead>
      <tbody class="divide-y divide-gray-200 bg-white">
        <% items.each do |item| %>
          <tr class="hover:bg-gray-50/50 transition">
            <td class="px-6 py-4 whitespace-nowrap">
              <div class="font-semibold text-gray-900"><%= item.name %></div>
              <div class="text-xs text-gray-400">SKU: <%= item.sku %> • <%= item.category.name %></div>
            </td>
            <td class="px-6 py-4 whitespace-nowrap font-mono text-xs text-gray-600"><%= item.serial_number %></td>
            <td class="px-6 py-4 whitespace-nowrap text-gray-700">
              <% if item.user.present? %>
                <span class="inline-flex items-center gap-1.5 text-gray-900 font-medium">👤 <%= item.user.name %></span>
              <% elsif item.room.present? %>
                <span class="inline-flex items-center gap-1.5 text-gray-600">📍 <%= item.room.name_with_building %></span>
              <% else %>
                <span class="inline-flex items-center py-0.5 px-2 rounded-full text-xs font-medium bg-amber-50 text-amber-800 border border-amber-200">📦 Im Hauptlager</span>
              <% end %>
            </td>
            
            <!-- STICKER-ID ALS BADGE (Jetzt auch in der Desktop-Tabelle markant) -->
            <td class="px-6 py-4 whitespace-nowrap">
              <span class="inline-flex items-center font-mono font-bold text-xs text-white bg-blue-600 px-2 py-0.5 rounded shadow-sm tracking-wider">
                #<%= item.sticker_id %>
              </span>
            </td>
            
            <td class="px-6 py-4 whitespace-nowrap text-end font-medium text-gray-900">
              <%= number_to_currency(item.price, unit: "€", separator: ",", delimiter: ".", format: "%n %u") %>
            </td>
            <td class="px-6 py-4 whitespace-nowrap text-end font-medium text-xs">
              <div class="flex items-center justify-end gap-2">
                <%= link_to item_path(item), class: "p-1.5 text-gray-500 hover:text-blue-600 hover:bg-blue-50 rounded-lg transition-colors border border-transparent hover:border-blue-100", title: "Details anzeigen" do %>
                  <svg class="h-4 w-4" fill="none" viewBox="0 0 24 24" stroke-width="1.5" stroke="currentColor"><path stroke-linecap="round" stroke-linejoin="round" d="M2.036 12.322a1.012 1.012 0 0 1 0-.639C3.423 7.51 7.36 4.5 12 4.5c4.638 0 8.573 3.007 9.963 7.178.07.207.07.431 0 .639C20.577 16.49 16.64 19.5 12 19.5c-4.638 0-8.573-3.007-9.963-7.178Z" /><path stroke-linecap="round" stroke-linejoin="round" d="M15 12a3 3 0 1 1-6 0 3 3 0 0 1 6 0Z" /></svg>
                <% end %>
                <%= link_to edit_item_path(item), class: "p-1.5 text-gray-500 hover:text-amber-600 hover:bg-amber-50 rounded-lg transition-colors border border-transparent hover:border-amber-100", title: "Artikel bearbeiten" do %>
                  <svg class="h-4 w-4" fill="none" viewBox="0 0 24 24" stroke-width="1.5" stroke="currentColor"><path stroke-linecap="round" stroke-linejoin="round" d="m16.862 4.487 1.687-1.688a1.875 1.875 0 1 1 2.652 2.652L10.582 16.07a4.5 4.5 0 0 1-1.897 1.13L6 18l.8-2.685a4.5 4.5 0 0 1 1.13-1.897l8.932-8.931Zm0 0L19.5 7.125M18 14v4.75A2.25 2.25 0 0 1 15.75 21H5.25A2.25 2.25 0 0 1 3 18.75V8.25A2.25 2.25 0 0 1 5.25 6H10" /></svg>
                <% end %>
              </div>
            </td>
          </tr>
        <% end %>
      </tbody>
    </table>
  </div>
</div>