diff --git a/Website/main.py b/Website/main.py
index 88e8688..52c696d 100644
--- a/Website/main.py
+++ b/Website/main.py
@@ -458,7 +458,8 @@ def _list_school_instances() -> list:
     rows = []
     client = None
     try:
-        client, col = _get_collection("school_instances")
+        # Greife auf "instances" zu (passend zum Async-Provisioning)
+        client, col = _get_collection("instances")
         rows = list(col.find().sort([("updated_at", -1), ("created_at", -1)]))
     except PyMongoError:
         return []
@@ -472,17 +473,17 @@ def _list_school_instances() -> list:
             {
                 "id": str(row.get("_id") or ""),
                 "school_name": _sanitize_text(row.get("school_name") or "", 120),
-                "owner_username": _sanitize_text(row.get("owner_username") or "", 80),
+                "owner_username": _sanitize_text(row.get("owner_username") or row.get("username") or "", 80),
                 "subdomain": _sanitize_text(row.get("subdomain") or "", 63),
                 "domain": _sanitize_text(row.get("domain") or "", 190),
-                "https_port": int(row.get("https_port") or 0),
+                "https_port": int(row.get("https_port") or row.get("port") or 0),
                 "instance_dir": _sanitize_text(row.get("instance_dir") or "", 300),
                 "app_image_tag": _sanitize_text(row.get("app_image_tag") or "latest", 80),
                 "library_enabled": bool(row.get("library_enabled", False)),
                 "status": _sanitize_text(row.get("status") or "Unbekannt", 40),
                 "nginx_status": _sanitize_text(row.get("nginx_status") or "unbekannt", 80),
                 "last_message": _sanitize_text(row.get("last_message") or "", 500),
-                "updated_at": row.get("updated_at") or "",
+                "updated_at": row.get("updated_at") or row.get("created_at") or "",
             }
         )
     return normalized
@@ -2580,237 +2581,16 @@ def instance_request_delete():
 
 
 
-@app.route('/admin/instances', methods=['GET', 'POST'])
+@app.route('/admin/instances', methods=['GET'])
 @admin_required
 def admin_instances():
-    version_options = _parse_instance_version_options()
-    available_users = _list_available_instance_users()
-
-    if request.method == 'POST':
-        action = _sanitize_text(request.form.get("action") or "create", 20).lower()
-        posted_subdomain = _sanitize_text(request.form.get("subdomain") or "", 120)
-        school_name = _sanitize_text(request.form.get("school_name") or "", 120)
-        raw_subdomain = _sanitize_text(request.form.get("subdomain") or "", 120)
-        owner_username = _sanitize_text(request.form.get("owner_username") or "", 80)
-        app_image_tag = _sanitize_text(request.form.get("app_image_tag") or "latest", 80)
-        library_enabled = (request.form.get("library_enabled") or "").strip().lower() in {"1", "on", "true", "yes"}
-        subdomain = _slugify_subdomain(posted_subdomain or raw_subdomain or school_name)
-
-        if action == "reload_nginx":
-            reload_ok, reload_message = _reload_host_nginx()
-            if not reload_ok:
-                lowered = (reload_message or "").lower()
-                if "nicht gefunden" in lowered or "not found" in lowered or "kein nginx-reload-befehl" in lowered:
-                    flash("Host-Nginx kann aus dem Website-Container nicht direkt neu geladen werden.", "error")
-                    flash(_host_reload_hint(), "info")
-                    flash("Nach erfolgreichem Host-Reload bitte 'Reload auf Host bestätigt' ausführen.", "info")
-                else:
-                    flash(reload_message or "Nginx-Reload fehlgeschlagen.", "error")
-                return redirect(url_for("admin_instances"))
-
-            updated_rows = _promote_manual_nginx_status(
-                "Nginx erfolgreich neu geladen (Admin-Aktion)."
-            )
-            flash("Nginx wurde erfolgreich neu geladen.", "success")
-            if updated_rows > 0:
-                flash(f"{updated_rows} Instanz(en) von manual_required auf ok gesetzt.", "info")
-            else:
-                flash("Keine Instanz mit nginx_status=manual_required gefunden.", "info")
-            if reload_message:
-                flash(reload_message, "info")
-            return redirect(url_for("admin_instances"))
-
-        if action == "confirm_nginx_reload":
-            updated_rows = _promote_manual_nginx_status(
-                "Host-Nginx manuell neu geladen und in Admin bestätigt."
-            )
-            if updated_rows > 0:
-                flash(f"{updated_rows} Instanz(en) von manual_required auf ok gesetzt.", "success")
-            else:
-                flash("Keine Instanz mit nginx_status=manual_required gefunden.", "info")
-            return redirect(url_for("admin_instances"))
-
-        if action == "delete":
-            if not _is_valid_subdomain(subdomain):
-                flash("Ungültige Subdomain für Löschung.", "error")
-                return redirect(url_for("admin_instances"))
-
-            existing_record = _get_school_instance_by_subdomain(subdomain)
-            target_dir = _instance_dir_path(subdomain)
-            dir_exists = bool(target_dir and os.path.isdir(target_dir))
-            if not existing_record and not dir_exists:
-                flash("Instanz nicht gefunden.", "error")
-                return redirect(url_for("admin_instances"))
-
-            delete_ok, delete_message = _delete_instance_stack(subdomain)
-            if not delete_ok:
-                flash(delete_message or "Instanz konnte nicht gelöscht werden.", "error")
-                return redirect(url_for("admin_instances"))
-
-            if existing_record and not _delete_school_instance(subdomain):
-                flash(
-                    "Instanz wurde technisch gelöscht, aber der Datenbankeintrag konnte nicht entfernt werden.",
-                    "error",
-                )
-                return redirect(url_for("admin_instances"))
-
-            flash(f"Instanz {subdomain} wurde gelöscht.", "success")
-            if delete_message:
-                flash(delete_message, "info")
-            return redirect(url_for("admin_instances"))
-
-        if action == "toggle_library":
-            target = _get_school_instance_by_subdomain(subdomain)
-            if not target:
-                flash("Instanz nicht gefunden.", "error")
-                return redirect(url_for("admin_instances"))
-
-            instance_dir = _resolve_instance_dir(subdomain)
-            if not instance_dir:
-                flash("Instanzverzeichnis nicht gefunden.", "error")
-                return redirect(url_for("admin_instances"))
-
-            target_enabled = (request.form.get("library_enabled") or "").strip().lower() in {"1", "on", "true", "yes"}
-            ok, message = _set_instance_library_enabled(instance_dir, target_enabled)
-            if not ok:
-                _upsert_school_instance(
-                    {
-                        "subdomain": subdomain,
-                        "status": "Fehler",
-                        "nginx_status": "error",
-                        "last_message": message,
-                    }
-                )
-                flash(message, "error")
-                return redirect(url_for("admin_instances"))
-
-            restart_ok, restart_output = _restart_instance_stack(instance_dir)
-            client = None
-            try:
-                client, col = _get_collection("school_instances")
-                col.update_one(
-                    {"subdomain": subdomain},
-                    {
-                        "$set": {
-                            "school_name": target.get("school_name") or "",
-                            "owner_username": target.get("owner_username") or "",
-                            "subdomain": subdomain,
-                            "domain": target.get("domain") or f"{subdomain}.{INSTANCE_PARENT_DOMAIN}",
-                            "https_port": int(target.get("https_port") or 0),
-                            "instance_dir": instance_dir,
-                            "app_image_tag": target.get("app_image_tag") or "latest",
-                            "library_enabled": target_enabled,
-                            "status": "Läuft" if restart_ok else "Fehler",
-                            "nginx_status": "ok" if restart_ok else "error",
-                            "last_message": "Bibliothek aktiviert/deaktiviert und Instanz neu gestartet." if restart_ok else _tail_output(restart_output, 18),
-                            "updated_at": _utc_now_iso(),
-                        },
-                        "$setOnInsert": {"created_at": _utc_now_iso()},
-                    },
-                    upsert=True,
-                )
-            except PyMongoError:
-                pass
-            finally:
-                if client:
-                    client.close()
-
-            if restart_ok:
-                flash(f"Bibliothek wurde {'aktiviert' if target_enabled else 'deaktiviert'} und die Instanz neu gestartet.", "success")
-                if restart_output:
-                    flash(_tail_output(restart_output, 12), "info")
-            else:
-                flash(f"Bibliothek wurde gespeichert, aber der Neustart ist fehlgeschlagen.\n{_tail_output(restart_output, 18)}", "error")
-            return redirect(url_for("admin_instances"))
-
-        if action not in {"create", "start"}:
-            flash("Ungültige Aktion für Instanzverwaltung.", "error")
-            return redirect(url_for("admin_instances"))
-
-        if not available_users:
-            flash("Keine freien Nutzer verfügbar. Bitte zuerst einen neuen Nutzer anlegen oder eine bestehende Instanz löschen.", "error")
-            return redirect(url_for("admin_instances"))
-
-        if not school_name:
-            flash("Bitte einen Schulnamen angeben.", "error")
-            return redirect(url_for("admin_instances"))
-
-        if not owner_username:
-            flash("Bitte einen Nutzer zuweisen.", "error")
-            return redirect(url_for("admin_instances"))
-
-        owner_doc = _find_user(owner_username)
-        if not owner_doc:
-            flash("Ausgewählter Nutzer wurde nicht gefunden.", "error")
-            return redirect(url_for("admin_instances"))
-
-        if not school_name:
-            school_name = _sanitize_text(owner_doc.get("display_name") or owner_username, 120)
-
-        if app_image_tag not in version_options:
-            flash("Ungültige Version ausgewählt.", "error")
-            return redirect(url_for("admin_instances"))
-
-        existing_for_owner = _get_instance_for_user(owner_username, "")
-        if existing_for_owner:
-            existing_sub = _sanitize_text(existing_for_owner.get("subdomain") or "", 63)
-            if existing_sub and existing_sub != subdomain:
-                flash(
-                    f"Nutzer {owner_username} ist bereits der Instanz {existing_sub} zugewiesen. "
-                    "Bitte erst diese Zuweisung ändern.",
-                    "error",
-                )
-                return redirect(url_for("admin_instances"))
-
-        if not _is_valid_subdomain(subdomain):
-            flash("Ungültige Subdomain. Erlaubt sind a-z, 0-9 und Bindestriche (3-63 Zeichen).", "error")
-            return redirect(url_for("admin_instances"))
-
-        success, message, details = _run_instance_provision(
-            action,
-            school_name,
-            subdomain,
-            app_image_tag=app_image_tag,
-            library_enabled=library_enabled,
-        )
-
-        instance_data = {
-            "school_name": school_name,
-            "owner_username": owner_username,
-            "subdomain": details.get("SUBDOMAIN") or subdomain,
-            "domain": details.get("DOMAIN") or f"{subdomain}.{INSTANCE_PARENT_DOMAIN}",
-            "https_port": int((details.get("HTTPS_PORT") or "0") or 0),
-            "instance_dir": details.get("INSTANCE_DIR") or os.path.join(INSTANCE_BASE_DIR, subdomain),
-            "app_image_tag": details.get("APP_IMAGE_TAG") or app_image_tag,
-            "library_enabled": library_enabled if details.get("LIBRARY_ENABLED") is None else details.get("LIBRARY_ENABLED") == "1",
-            "status": "Läuft" if success else "Fehler",
-            "nginx_status": details.get("NGINX_STATUS") or ("ok" if success else "error"),
-            "last_message": message,
-        }
-        _upsert_school_instance(instance_data)
-
-        if success:
-            flash(f"Instanz gestartet: {instance_data['domain']}", "success")
-            if message:
-                flash(message, "info")
-        else:
-            flash(message or "Instanz konnte nicht gestartet werden.", "error")
-
-        return redirect(url_for("admin_instances"))
 
     instances = _list_school_instances()
-    instance_dashboard = _build_instance_dashboard(instances)
+
     return render_template(
         "admin_instances.html",
         instances=instances,
-        users=_list_users_for_admin(),
-        available_users=available_users,
-        instance_dashboard=instance_dashboard,
-        version_options=version_options,
-        instance_repo_url=INSTANCE_REPO_URL,
         parent_domain=INSTANCE_PARENT_DOMAIN,
-        base_dir=INSTANCE_BASE_DIR,
-        provision_script=INSTANCE_PROVISION_SCRIPT,
     )
 
 
@@ -3869,6 +3649,36 @@ def tenant_status():
     return jsonify({"status": "pending"}), 200
 
 
+@app.route('/admin/test/drop_all_instances', methods=['POST'])
+@login_required
+def admin_drop_all_instances():
+    # 1. Sicherheits-Check: Nur Admins dürfen das!
+    # Passe diesen Check an deine bestehende Rollenverwaltung an
+    if not session.get("is_admin") and session.get("role") != "admin":
+        flash("Zugriff verweigert. Diese Aktion ist nur für Administratoren erlaubt.", "error")
+        return redirect(url_for('my_instance_management')) # oder zum Dashboard
+
+    inst_client, inst_col = _get_collection("instances")
+    req_client, req_col = _get_collection("instance_requests")
+
+    try:
+        # Löscht alle Dokumente in den beiden Collections
+        deleted_instances = inst_col.delete_many({}).deleted_count
+        deleted_requests = req_col.delete_many({}).deleted_count
+
+        flash(f"Test-Reset erfolgreich: {deleted_instances} Instanzen und {deleted_requests} Anfragen wurden unwiderruflich gelöscht.", "success")
+        print(f"[ADMIN ACTION] Alle Instanzen ({deleted_instances}) und Requests ({deleted_requests}) wurden von {session.get('username')} gelöscht.")
+        
+    except Exception as e:
+        print(f"[ERROR] Fehler beim Löschen der Datenbank: {e}")
+        flash("Ein Fehler ist aufgetreten. Datenbank konnte nicht bereinigt werden.", "error")
+    finally:
+        inst_client.close()
+        req_client.close()
+
+    # Leite den Admin danach zurück zu einer sicheren Seite
+    return redirect(url_for('my_instance_management'))
+
 def main():
     app.run(host="0.0.0.0", port=4999, debug=False)
 
diff --git a/Website/templates/admin_instances.html b/Website/templates/admin_instances.html
index ea75621..7fc8cd1 100644
--- a/Website/templates/admin_instances.html
+++ b/Website/templates/admin_instances.html
@@ -1,137 +1,29 @@
 {% extends "base.html" %}
 
-{% block title %}Admin | Instanzen{% endblock %}
+{% block title %}Admin | Tenant Instanzen{% endblock %}
 
 {% block content %}
 <section class="instance-header">
-    <h1>Schul-Instanzen starten</h1>
-    <p>Neue Instanzen des Inventarsystems für Subdomains pro Schule anlegen, sowie die Bibliothek dauerhaft aktivieren oder deaktivieren.</p>
-</section>
-
-<section class="dashboard-grid">
-    <article class="kpi-card">
-        <p class="kpi-label">Instanzen gesamt</p>
-        <p class="kpi-value">{{ instance_dashboard.kpis.total }}</p>
-    </article>
-    <article class="kpi-card good">
-        <p class="kpi-label">Laufend</p>
-        <p class="kpi-value">{{ instance_dashboard.kpis.running }}</p>
-    </article>
-    <article class="kpi-card bad">
-        <p class="kpi-label">Fehlerhaft</p>
-        <p class="kpi-value">{{ instance_dashboard.kpis.error }}</p>
-    </article>
-    <article class="kpi-card">
-        <p class="kpi-label">Bibliothek aktiv</p>
-        <p class="kpi-value">{{ instance_dashboard.kpis.library_on }}</p>
-    </article>
-    <article class="kpi-card">
-        <p class="kpi-label">Nutzer zugewiesen</p>
-        <p class="kpi-value">{{ instance_dashboard.kpis.assigned_users }}</p>
-    </article>
-</section>
-
-<section class="charts-grid">
-    <article class="chart-card">
-        <h3>Status</h3>
-        <canvas id="statusChart" aria-label="Status Chart"></canvas>
-    </article>
-    <article class="chart-card">
-        <h3>Bibliothek</h3>
-        <canvas id="libraryChart" aria-label="Library Chart"></canvas>
-    </article>
-    <article class="chart-card wide">
-        <h3>Versionen</h3>
-        <canvas id="versionsChart" aria-label="Versions Chart"></canvas>
-    </article>
-    <article class="chart-card wide">
-        <h3>Instanzen pro Nutzer</h3>
-        <canvas id="ownersChart" aria-label="Owners Chart"></canvas>
-    </article>
-    <article class="chart-card wide">
-        <h3>Aktivität (letzte 7 Tage)</h3>
-        <canvas id="activityChart" aria-label="Activity Chart"></canvas>
-    </article>
-</section>
-
-<section class="instance-form-wrap">
-    <form method="post" class="instance-form">
-        <input type="hidden" name="action" value="create">
-
-        <label for="owner_username">Zugewiesener Nutzer</label>
-        <select id="owner_username" name="owner_username" required {% if not available_users %}disabled{% endif %}>
-            {% if available_users %}
-                <option value="">Nutzer wählen</option>
-                {% for user in available_users %}
-                    <option value="{{ user.username }}" data-school-name="{{ user.display_name or user.username }}">{{ user.username }}{% if user.display_name %} - {{ user.display_name }}{% endif %}</option>
-                {% endfor %}
-            {% else %}
-                <option value="">Keine freien Nutzer verfügbar</option>
-            {% endif %}
-        </select>
-
-        {% if not available_users %}
-        <p class="warn-text">Alle Nutzer sind bereits einer Instanz zugewiesen. Lege einen neuen Nutzer an oder lösche eine bestehende Instanz.</p>
-        {% endif %}
-
-        <label for="school_name">Schulname</label>
-        <input id="school_name" name="school_name" type="text" placeholder="wird aus dem Nutzer übernommen" required>
-
-        <label for="app_image_tag">Version</label>
-        <select id="app_image_tag" name="app_image_tag" required>
-            {% for version in version_options %}
-                <option value="{{ version }}">{{ version }}</option>
-            {% endfor %}
-        </select>
-
-        <label for="subdomain">Subdomain (optional)</label>
-        <input id="subdomain" name="subdomain" type="text" placeholder="wird aus Schulname abgeleitet">
-
-        <label class="check-row">
-            <input type="checkbox" name="library_enabled" value="1">
-            Bibliothek aktivieren
-        </label>
-
-        <button type="submit">Instanz erstellen und starten</button>
-    </form>
-
-    <aside class="instance-meta">
-        <h2>Systemdaten</h2>
-        <p><strong>Repository:</strong> {{ instance_repo_url }}</p>
-        <p><strong>Basis-Domain:</strong> {{ parent_domain }}</p>
-        <p><strong>Instanz-Pfad:</strong> {{ base_dir }}</p>
-        <p><strong>Provisioning-Skript:</strong> {{ provision_script }}</p>
-        <p class="note">Hinweis: Für Docker- und Nginx-Operationen benötigt der laufende Prozess die passenden Host-Berechtigungen.</p>
-    </aside>
+    <h1>Tenant Instanzen Übersicht</h1>
+    <p>Übersicht aller zugewiesenen und aktiven Schul-Instanzen im System.</p>
 </section>
 
 <section class="instance-table-wrap">
     <div class="table-head">
-        <h2>Vorhandene Instanzen</h2>
-        <div class="table-actions">
-            <form method="post" class="inline-toggle-form">
-                <input type="hidden" name="action" value="reload_nginx">
-                <button type="submit">Nginx neu laden &amp; Status aktualisieren</button>
-            </form>
-            <form method="post" class="inline-toggle-form">
-                <input type="hidden" name="action" value="confirm_nginx_reload">
-                <button type="submit">Reload auf Host bestätigt</button>
-            </form>
-        </div>
+        <h2>Vorhandene Tenant Instanzen</h2>
     </div>
     {% if instances %}
     <table>
         <thead>
             <tr>
                 <th>Schule</th>
-                <th>Nutzer</th>
-                <th>Subdomain</th>
+                <th>Nutzer (Owner)</th>
+                <th>Subdomain / Domain</th>
+                <th>HTTPS-Port</th>
                 <th>Version</th>
                 <th>Bibliothek</th>
-                <th>Aktion</th>
-                <th>HTTPS-Port</th>
                 <th>Status</th>
-                <th>Nginx</th>
+                <th>Nginx Status</th>
                 <th>Letzte Meldung</th>
                 <th>Aktualisiert</th>
             </tr>
@@ -139,185 +31,84 @@
         <tbody>
             {% for item in instances %}
             <tr>
-                <td>{{ item.school_name }}</td>
+                <td><strong>{{ item.school_name or '-' }}</strong></td>
                 <td>{{ item.owner_username or '-' }}</td>
                 <td>
                     {% if item.domain %}
-                        <a class="instance-domain-link" href="https://{{ item.domain }}" target="_blank" rel="noopener noreferrer">{{ item.domain }}</a>
+                        <a class="instance-domain-link" href="https://{{ item.domain }}" target="_blank" rel="noopener noreferrer">
+                            {{ item.domain }}
+                        </a>
+                    {% elif item.subdomain %}
+                        {{ item.subdomain }}.{{ parent_domain }}
                     {% else %}
                         -
                     {% endif %}
                 </td>
-                <td>{{ item.app_image_tag or 'latest' }}</td>
-                <td>{{ 'an' if item.library_enabled else 'aus' }}</td>
-                <td>
-                    <form method="post" class="inline-toggle-form">
-                        <input type="hidden" name="action" value="toggle_library">
-                        <input type="hidden" name="subdomain" value="{{ item.subdomain }}">
-                        <input type="hidden" name="library_enabled" value="{{ 0 if item.library_enabled else 1 }}">
-                        <button type="submit">{{ 'Bibliothek deaktivieren' if item.library_enabled else 'Bibliothek aktivieren' }}</button>
-                    </form>
-                    <form method="post" class="inline-toggle-form" onsubmit="return confirm('Instanz {{ item.subdomain }} wirklich löschen? Dieser Vorgang entfernt Container, Daten und Konfiguration.');">
-                        <input type="hidden" name="action" value="delete">
-                        <input type="hidden" name="subdomain" value="{{ item.subdomain }}">
-                        <button type="submit" class="danger">Instanz löschen</button>
-                    </form>
-                </td>
                 <td>{{ item.https_port or '-' }}</td>
+                <td><code>{{ item.app_image_tag or 'latest' }}</code></td>
                 <td>
-                    <span class="pill {{ 'ok' if item.status == 'Läuft' else 'error' }}">{{ item.status }}</span>
+                    <span class="pill {{ 'ok' if item.library_enabled else 'inactive' }}">
+                        {{ 'Aktiv' if item.library_enabled else 'Inaktiv' }}
+                    </span>
                 </td>
-                <td>{{ item.nginx_status }}</td>
-                <td>{{ item.last_message }}</td>
-                <td>{{ item.updated_at }}</td>
+                <td>
+                    <span class="pill {{ 'ok' if item.status in ['Läuft', 'ready', 'active'] else 'error' }}">
+                        {{ item.status or 'Unbekannt' }}
+                    </span>
+                </td>
+                <td>{{ item.nginx_status or 'unbekannt' }}</td>
+                <td class="last-msg-cell">{{ item.last_message or '-' }}</td>
+                <td>{{ item.updated_at or '-' }}</td>
             </tr>
             {% endfor %}
         </tbody>
     </table>
     {% else %}
-    <p>Noch keine Instanzen vorhanden.</p>
+    <p class="empty-state">Aktuell sind keine Tenant-Instanzen in der Datenbank vorhanden.</p>
     {% endif %}
 </section>
 
 <style>
 .instance-header {
-    margin-bottom: 1rem;
+    margin-bottom: 1.5rem;
 }
 
-.dashboard-grid {
-    display: grid;
-    grid-template-columns: repeat(5, minmax(0, 1fr));
-    gap: 0.75rem;
-    margin-bottom: 1rem;
-}
-
-.kpi-card {
-    border: 1px solid #d8e1e8;
-    background: linear-gradient(160deg, #ffffff 0%, #f4f8fb 100%);
-    border-radius: 14px;
-    padding: 0.85rem;
-}
-
-.kpi-card.good {
-    border-color: #8cc9a6;
-    background: linear-gradient(160deg, #ffffff 0%, #eaf8f1 100%);
-}
-
-.kpi-card.bad {
-    border-color: #e3adad;
-    background: linear-gradient(160deg, #ffffff 0%, #fef2f2 100%);
-}
-
-.kpi-label {
-    margin: 0;
-    font-size: 0.84rem;
-    color: #4b6170;
-    font-weight: 600;
-}
-
-.kpi-value {
-    margin: 0.3rem 0 0;
-    font-size: 1.58rem;
-    font-weight: 800;
-    color: #11364a;
-}
-
-.charts-grid {
-    display: grid;
-    grid-template-columns: repeat(2, minmax(0, 1fr));
-    gap: 0.85rem;
-    margin-bottom: 1.2rem;
-}
-
-.chart-card {
-    border: 1px solid #d8e1e8;
-    background: #ffffff;
-    border-radius: 14px;
-    padding: 0.85rem;
-}
-
-.chart-card.wide {
-    grid-column: span 2;
-}
-
-.chart-card h3 {
-    margin: 0 0 0.45rem;
-    font-size: 1rem;
-}
-
-.chart-card canvas {
-    width: 100%;
-    max-height: 260px;
-}
-
-.instance-form-wrap {
-    display: grid;
-    grid-template-columns: 1.2fr 1fr;
-    gap: 1rem;
-    margin-bottom: 1.2rem;
-}
-
-.instance-form,
-.instance-meta,
 .instance-table-wrap {
     border: 1px solid #d8e1e8;
     background: #ffffff;
     border-radius: 14px;
-    padding: 1rem;
+    padding: 1.25rem;
+    overflow-x: auto;
 }
 
 .table-head {
-    display: flex;
-    align-items: center;
-    justify-content: space-between;
-    gap: 0.75rem;
-    flex-wrap: wrap;
+    margin-bottom: 1rem;
 }
 
-.table-actions {
-    display: flex;
-    align-items: center;
-    gap: 0.5rem;
-    flex-wrap: wrap;
+.table-head h2 {
+    margin: 0;
+    font-size: 1.25rem;
+    color: #11364a;
 }
 
-.instance-form {
-    display: grid;
-    gap: 0.5rem;
+table {
+    width: 100%;
+    border-collapse: collapse;
 }
 
-.instance-form input,
-.instance-form select {
-    border: 1px solid #bcd0de;
-    border-radius: 10px;
-    padding: 0.55rem 0.65rem;
-    font: inherit;
-}
-
-.check-row {
-    display: flex;
-    align-items: center;
-    gap: 0.45rem;
-    margin-top: 0.2rem;
-    font-weight: 600;
-}
-
-.instance-form button {
-    margin-top: 0.4rem;
-    border: none;
-    border-radius: 999px;
-    padding: 0.55rem 0.95rem;
-    font-weight: 700;
-    cursor: pointer;
-    color: #ffffff;
-    background: linear-gradient(120deg, #0b5b89 0%, #0b4262 100%);
-}
-
-.warn-text {
-    margin: 0.2rem 0 0.1rem;
-    color: #8b2a27;
+th,
+td {
+    text-align: left;
+    border-bottom: 1px solid #e7edf3;
+    padding: 0.75rem;
+    vertical-align: middle;
     font-size: 0.9rem;
-    font-weight: 600;
+}
+
+th {
+    background-color: #f8fafc;
+    color: #4b6170;
+    font-weight: 700;
 }
 
 .instance-domain-link {
@@ -330,77 +121,23 @@
     text-decoration: underline;
 }
 
-.inline-toggle-form {
-    margin: 0;
+.last-msg-cell {
+    max-width: 250px;
+    white-space: nowrap;
+    overflow: hidden;
+    text-overflow: ellipsis;
 }
 
-.inline-toggle-form + .inline-toggle-form {
-    margin-top: 0.35rem;
-}
-
-.inline-toggle-form button {
-    border: 1px solid #bcd0de;
-    background: #ffffff;
-    color: #173f5a;
-    border-radius: 999px;
-    padding: 0.35rem 0.68rem;
-    font: inherit;
-    font-weight: 700;
-    cursor: pointer;
-}
-
-.inline-toggle-form button:hover {
-    background: #f2f8fc;
-}
-
-.inline-toggle-form button.danger {
-    border-color: #e3adad;
-    color: #8b2a27;
-    background: #fef2f2;
-}
-
-.inline-toggle-form button.danger:hover {
-    background: #fde4e4;
-}
-
-.instance-meta h2,
-.instance-table-wrap h2 {
-    margin: 0 0 0.5rem;
-}
-
-.instance-meta p {
-    margin: 0.28rem 0;
-    font-size: 0.92rem;
-}
-
-.instance-meta .note {
-    margin-top: 0.65rem;
-    padding-top: 0.65rem;
-    border-top: 1px dashed #c7d2db;
-}
-
-.instance-table-wrap {
-    overflow-x: auto;
-}
-
-table {
-    width: 100%;
-    border-collapse: collapse;
-}
-
-th,
-td {
-    text-align: left;
-    border-bottom: 1px solid #e7edf3;
-    padding: 0.62rem;
-    vertical-align: top;
-    font-size: 0.9rem;
+.empty-state {
+    color: #64748b;
+    font-style: italic;
+    padding: 1rem 0;
 }
 
 .pill {
     display: inline-flex;
     border-radius: 999px;
-    padding: 0.18rem 0.62rem;
+    padding: 0.2rem 0.65rem;
     font-weight: 700;
     font-size: 0.78rem;
 }
@@ -417,132 +154,10 @@ td {
     color: #8b2a27;
 }
 
-@media (max-width: 900px) {
-    .dashboard-grid {
-        grid-template-columns: repeat(2, minmax(0, 1fr));
-    }
-
-    .charts-grid {
-        grid-template-columns: 1fr;
-    }
-
-    .chart-card.wide {
-        grid-column: span 1;
-    }
-
-    .instance-form-wrap {
-        grid-template-columns: 1fr;
-    }
+.pill.inactive {
+    background: #f1f5f9;
+    border: 1px solid #cbd5e1;
+    color: #475569;
 }
 </style>
-
-<script src="https://cdn.jsdelivr.net/npm/chart.js"></script>
-
-<script>
-(function() {
-    const dashboardData = {{ instance_dashboard|tojson }};
-
-    const buildChart = (id, config) => {
-        const element = document.getElementById(id);
-        if (!element) {
-            return;
-        }
-        new Chart(element, config);
-    };
-
-    buildChart('statusChart', {
-        type: 'doughnut',
-        data: {
-            labels: dashboardData.status.labels,
-            datasets: [{
-                data: dashboardData.status.values,
-                backgroundColor: ['#3aa675', '#cf4b49', '#8aa6b8']
-            }]
-        },
-        options: { plugins: { legend: { position: 'bottom' } } }
-    });
-
-    buildChart('libraryChart', {
-        type: 'pie',
-        data: {
-            labels: dashboardData.library.labels,
-            datasets: [{
-                data: dashboardData.library.values,
-                backgroundColor: ['#1b6f8e', '#c6d7e2']
-            }]
-        },
-        options: { plugins: { legend: { position: 'bottom' } } }
-    });
-
-    buildChart('versionsChart', {
-        type: 'bar',
-        data: {
-            labels: dashboardData.versions.labels,
-            datasets: [{
-                label: 'Instanzen',
-                data: dashboardData.versions.values,
-                backgroundColor: '#1b6f8e'
-            }]
-        },
-        options: {
-            responsive: true,
-            scales: { y: { beginAtZero: true, ticks: { precision: 0 } } },
-            plugins: { legend: { display: false } }
-        }
-    });
-
-    buildChart('ownersChart', {
-        type: 'bar',
-        data: {
-            labels: dashboardData.owners.labels,
-            datasets: [{
-                label: 'Instanzen',
-                data: dashboardData.owners.values,
-                backgroundColor: '#b3672e'
-            }]
-        },
-        options: {
-            indexAxis: 'y',
-            scales: { x: { beginAtZero: true, ticks: { precision: 0 } } },
-            plugins: { legend: { display: false } }
-        }
-    });
-
-    buildChart('activityChart', {
-        type: 'line',
-        data: {
-            labels: dashboardData.activity.labels,
-            datasets: [{
-                label: 'Updates',
-                data: dashboardData.activity.values,
-                borderColor: '#0b5b89',
-                backgroundColor: 'rgba(11, 91, 137, 0.15)',
-                fill: true,
-                tension: 0.25
-            }]
-        },
-        options: {
-            scales: { y: { beginAtZero: true, ticks: { precision: 0 } } },
-            plugins: { legend: { display: false } }
-        }
-    });
-
-    const ownerSelect = document.getElementById('owner_username');
-    const schoolInput = document.getElementById('school_name');
-    if (!ownerSelect || !schoolInput) {
-        return;
-    }
-
-    const updateSchoolName = () => {
-        const selectedOption = ownerSelect.options[ownerSelect.selectedIndex];
-        const schoolName = selectedOption ? (selectedOption.dataset.schoolName || '') : '';
-        if (schoolName) {
-            schoolInput.value = schoolName;
-        }
-    };
-
-    ownerSelect.addEventListener('change', updateSchoolName);
-    updateSchoolName();
-})();
-</script>
-{% endblock %}
+{% endblock %}
\ No newline at end of file