1.0

2026-09-07 13:00:59 +02:00
parent cbe4726c07
commit e0326285d3
12 changed files with 478 additions and 143 deletions
--- a/backend/public/admin/admin.css
+++ b/backend/public/admin/admin.css
@@ -1,6 +1,18 @@
 .inline-form { display: flex; gap: 0.6em; flex-wrap: wrap; margin-top: 0.6em; }
 .inline-form input { flex: 1; min-width: 220px; }

+.tab-nav {
+  display: flex; gap: 0.4em; padding: 0.6em 1.5em 0;
+  background: var(--paper-2); border-bottom: 2px solid var(--line);
+}
+.tab-link {
+  font-family: 'Nunito', sans-serif; font-weight: 700; text-decoration: none;
+  color: var(--ink-soft); padding: 0.6em 1.1em; border-radius: 10px 10px 0 0;
+  border: 2px solid transparent; border-bottom: none; margin-bottom: -2px;
+}
+.tab-link.active { background: var(--paper); border-color: var(--line); color: var(--rust); }
+.tab-link:hover:not(.active) { background: rgba(232,184,75,0.15); }
+
 .friend-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
@@ -18,6 +30,13 @@
 }
 .friend-card .tape { top: -10px; left: 50%; transform: translateX(-50%) rotate(-3deg); }

+.order-controls {
+  display: flex; align-items: center; justify-content: center; gap: 0.5em;
+  margin-bottom: 0.4em;
+}
+.order-controls button { font-size: 1rem; padding: 0.15em 0.5em; line-height: 1; }
+.order-num { font-family: 'Caveat', cursive; font-size: 1.2rem; color: var(--ink-soft); min-width: 1.4em; }
+
 .friend-thumb {
  width: 84px; height: 84px; border-radius: 50%;
  object-fit: cover; border: 4px solid #fff; box-shadow: var(--shadow);
--- a/backend/public/admin/admin.js
+++ b/backend/public/admin/admin.js
@@ -10,31 +10,15 @@ async function checkSession() {
  }
 }

+// Einstellungen werden im Hintergrund geladen (für den Freigabe-Link),
+// bearbeitet werden sie im separaten "Einstellungen"-Tab.
 async function loadSettings() {
  const res = await fetch('/api/settings');
  if (!res.ok) return;
  const data = await res.json();
-  settings = data.settings || { publicBaseUrl: '' };
-  document.getElementById('publicBaseUrl').value = settings.publicBaseUrl || '';
+  settings = data.settings || { publicBaseUrl: '', bookTitle: '' };
 }

-document.getElementById('saveSettingsBtn').addEventListener('click', async () => {
-  const publicBaseUrl = document.getElementById('publicBaseUrl').value.trim();
-  const res = await fetch('/api/settings', {
-    method: 'PUT',
-    headers: { 'Content-Type': 'application/json' },
-    body: JSON.stringify({ publicBaseUrl }),
-  });
-  const data = await res.json();
-  if (res.ok) {
-    settings = data.settings;
-    const msg = document.getElementById('settingsSaved');
-    msg.textContent = 'Gespeichert ✓';
-    msg.classList.add('show');
-    setTimeout(() => msg.classList.remove('show'), 1800);
-  }
-});
-
 function baseUrl() {
  return settings.publicBaseUrl && settings.publicBaseUrl.length
    ? settings.publicBaseUrl
@@ -55,7 +39,7 @@ function renderFriends() {
  grid.innerHTML = '';
  emptyMsg.style.display = friends.length ? 'none' : 'block';

-  friends.forEach((f) => {
+  friends.forEach((f, idx) => {
    const el = document.createElement('div');
    el.className = 'friend-card';
    const thumbHtml = f.profileImage
@@ -63,6 +47,11 @@ function renderFriends() {
      : `<div class="friend-thumb placeholder">${(f.name || '?')[0].toUpperCase()}</div>`;
    el.innerHTML = `
      <div class="tape"></div>
+      <div class="order-controls">
+        <button type="button" class="ghost" data-moveup="${f.id}" ${idx === 0 ? 'disabled' : ''} title="Nach vorn">↑</button>
+        <span class="order-num">${idx + 1}</span>
+        <button type="button" class="ghost" data-movedown="${f.id}" ${idx === friends.length - 1 ? 'disabled' : ''} title="Nach hinten">↓</button>
+      </div>
      ${thumbHtml}
      <h3>${escapeHtml(f.name)}</h3>
      <span class="badge ${f.shareEnabled ? 'on' : 'off'}">${f.shareEnabled ? 'Freigegeben' : 'Nicht freigegeben'}</span>
@@ -85,6 +74,27 @@ function renderFriends() {
  grid.querySelectorAll('[data-export]').forEach((btn) => {
    btn.addEventListener('click', () => window.location.href = `/api/friends/${btn.dataset.export}/export`);
  });
+  grid.querySelectorAll('[data-moveup]').forEach((btn) => {
+    btn.addEventListener('click', () => moveFriend(btn.dataset.moveup, -1));
+  });
+  grid.querySelectorAll('[data-movedown]').forEach((btn) => {
+    btn.addEventListener('click', () => moveFriend(btn.dataset.movedown, 1));
+  });
+}
+
+async function moveFriend(id, dir) {
+  const idx = friends.findIndex((f) => f.id === id);
+  const swapIdx = idx + dir;
+  if (idx === -1 || swapIdx < 0 || swapIdx >= friends.length) return;
+  const newOrder = [...friends];
+  [newOrder[idx], newOrder[swapIdx]] = [newOrder[swapIdx], newOrder[idx]];
+  const order = newOrder.map((f) => f.id);
+  const res = await fetch('/api/friends/reorder', {
+    method: 'POST',
+    headers: { 'Content-Type': 'application/json' },
+    body: JSON.stringify({ order }),
+  });
+  if (res.ok) loadFriends();
 }

 // wir brauchen den vollen Ordnernamen für Bild-URLs; da wir ihn nicht separat liefern,
@@ -190,56 +200,6 @@ document.getElementById('logoutBtn').addEventListener('click', async () => {
  window.location.href = '/';
 });

-// --- Sichern & Wiederherstellen ---
-function showTransferMsg(text, isError) {
-  const box = document.getElementById('transferMsg');
-  box.innerHTML = isError ? `<p class="error-msg">${text}</p>` : `<p class="saved-msg2 show">${text}</p>`;
-}
-
-document.getElementById('bookExportBtn').addEventListener('click', () => {
-  window.location.href = '/api/book/export';
-});
-
-document.getElementById('bookImportBtn').addEventListener('click', async () => {
-  const fileInput = document.getElementById('bookImportFile');
-  const file = fileInput.files[0];
-  if (!file) { showTransferMsg('Bitte zuerst eine ZIP-Datei auswählen.', true); return; }
-  const replaceAll = document.getElementById('bookImportReplace').checked;
-  if (replaceAll && !confirm('Wirklich ALLE bestehenden Freunde vor dem Import löschen?')) return;
-
-  const fd = new FormData();
-  fd.append('file', file);
-  fd.append('replaceAll', replaceAll ? 'true' : 'false');
-  showTransferMsg('Importiere...', false);
-  const res = await fetch('/api/book/import', { method: 'POST', body: fd });
-  const data = await res.json();
-  if (res.ok) {
-    showTransferMsg(`${data.imported.length} Freund(e) importiert: ${data.imported.join(', ') || '–'}`, false);
-    fileInput.value = '';
-    loadFriends();
-  } else {
-    showTransferMsg(data.error || 'Import fehlgeschlagen.', true);
-  }
-});
-
-document.getElementById('friendImportBtn').addEventListener('click', async () => {
-  const fileInput = document.getElementById('friendImportFile');
-  const file = fileInput.files[0];
-  if (!file) { showTransferMsg('Bitte zuerst eine ZIP-Datei auswählen.', true); return; }
-  const fd = new FormData();
-  fd.append('file', file);
-  showTransferMsg('Importiere...', false);
-  const res = await fetch('/api/friends/import', { method: 'POST', body: fd });
-  const data = await res.json();
-  if (res.ok) {
-    showTransferMsg(`"${data.friend.name}" wurde importiert.`, false);
-    fileInput.value = '';
-    loadFriends();
-  } else {
-    showTransferMsg(data.error || 'Import fehlgeschlagen.', true);
-  }
-});
-
 checkSession();
 loadSettings();
 loadFriends();
--- a/backend/public/admin/index.html
+++ b/backend/public/admin/index.html
@@ -16,19 +16,13 @@
    </div>
  </div>

-  <div class="container">
-    <section class="card" id="settingsCard">
-      <h2>Einstellungen</h2>
-      <label for="publicBaseUrl">Öffentliche URL (für Freigabe-Links hinter einem Reverse-Proxy)</label>
-      <div class="inline-form">
-        <input type="text" id="publicBaseUrl" placeholder="https://freundesbuch.example.com" />
-        <button type="button" id="saveSettingsBtn">Speichern</button>
-      </div>
-      <p class="muted" style="margin-top:0.4em;">Leer lassen, um automatisch die aktuell aufgerufene Adresse zu verwenden.</p>
-      <div id="settingsSaved" class="saved-msg2"></div>
-    </section>
+  <nav class="tab-nav">
+    <a href="/admin" class="tab-link active">👥 Freunde</a>
+    <a href="/admin/settings" class="tab-link">⚙️ Einstellungen &amp; Sichern</a>
+  </nav>

-    <section class="card" id="createCard" style="margin-top:1.4em;">
+  <div class="container">
+    <section class="card" id="createCard">
      <h2>Neuen Freund anlegen</h2>
      <form id="createForm" class="inline-form">
        <input type="text" id="newName" placeholder="Name des Freundes" required />
@@ -37,35 +31,9 @@
      <div id="createErr"></div>
    </section>

-    <section class="card" id="transferCard" style="margin-top:1.4em;">
-      <h2>Sichern &amp; Wiederherstellen</h2>
-      <div class="transfer-row">
-        <div>
-          <h3 style="font-size:1.2rem;">Ganzes Buch</h3>
-          <button type="button" id="bookExportBtn" class="secondary">⬇️ Buch exportieren (ZIP)</button>
-        </div>
-        <div>
-          <label for="bookImportFile">Buch importieren</label>
-          <input type="file" id="bookImportFile" accept=".zip" />
-          <label style="font-weight:normal; display:flex; align-items:center; gap:0.4em; margin-top:0.4em;">
-            <input type="checkbox" id="bookImportReplace" style="width:auto;" />
-            Bestehende Freunde vorher löschen
-          </label>
-          <button type="button" id="bookImportBtn" class="secondary" style="margin-top:0.4em;">⬆️ Importieren</button>
-        </div>
-      </div>
-      <hr style="border:none; border-top:1px solid var(--line); margin:1.2em 0;" />
-      <div>
-        <h3 style="font-size:1.2rem;">Einzelnen Freund importieren</h3>
-        <p class="muted">Legt einen neuen Freund aus einer zuvor exportierten ZIP-Datei an.</p>
-        <input type="file" id="friendImportFile" accept=".zip" />
-        <button type="button" id="friendImportBtn" class="secondary" style="margin-top:0.4em;">⬆️ Importieren</button>
-      </div>
-      <div id="transferMsg"></div>
-    </section>
-
    <section style="margin-top:2em;">
      <h2>Deine Freunde</h2>
+      <p class="muted">Die Reihenfolge hier bestimmt die Seitenfolge im Freundesbuch (nach dem Deckblatt). Mit den Pfeilen verschieben.</p>
      <div id="friendGrid" class="friend-grid"></div>
      <p id="emptyMsg" class="muted" style="display:none;">Noch keine Freunde angelegt – leg oben den ersten an!</p>
    </section>
--- a/backend/public/admin/settings.html
+++ b/backend/public/admin/settings.html
@@ -0,0 +1,68 @@
+<!DOCTYPE html>
+<html lang="de">
+<head>
+<meta charset="UTF-8" />
+<meta name="viewport" content="width=device-width, initial-scale=1" />
+<title>Freundesbuch – Einstellungen</title>
+<link rel="stylesheet" href="/assets/style.css" />
+<link rel="stylesheet" href="/admin/admin.css" />
+</head>
+<body>
+  <div class="top-bar card" style="border-radius:0;">
+    <h1 style="margin:0;">📖 Freundesbuch</h1>
+    <div style="display:flex; gap:0.6em; flex-wrap:wrap;">
+      <a class="btn" href="/book" target="_blank" rel="noopener">🎠 Freundesbuch anschauen</a>
+      <button class="secondary" id="logoutBtn">Abmelden</button>
+    </div>
+  </div>
+
+  <nav class="tab-nav">
+    <a href="/admin" class="tab-link">👥 Freunde</a>
+    <a href="/admin/settings" class="tab-link active">⚙️ Einstellungen &amp; Sichern</a>
+  </nav>
+
+  <div class="container">
+    <section class="card" id="settingsCard">
+      <h2>Einstellungen</h2>
+      <label for="bookTitle">Titel des Freundesbuchs (steht auf dem Deckblatt)</label>
+      <input type="text" id="bookTitle" placeholder="Unser Freundesbuch" style="margin-bottom:1em;" />
+      <label for="publicBaseUrl">Öffentliche URL (für Freigabe-Links hinter einem Reverse-Proxy)</label>
+      <div class="inline-form">
+        <input type="text" id="publicBaseUrl" placeholder="https://freundesbuch.example.com" />
+        <button type="button" id="saveSettingsBtn">Speichern</button>
+      </div>
+      <p class="muted" style="margin-top:0.4em;">Leer lassen, um automatisch die aktuell aufgerufene Adresse zu verwenden.</p>
+      <div id="settingsSaved" class="saved-msg2"></div>
+    </section>
+
+    <section class="card" id="transferCard" style="margin-top:1.4em;">
+      <h2>Sichern &amp; Wiederherstellen</h2>
+      <div class="transfer-row">
+        <div>
+          <h3 style="font-size:1.2rem;">Ganzes Buch</h3>
+          <button type="button" id="bookExportBtn" class="secondary">⬇️ Buch exportieren (ZIP)</button>
+        </div>
+        <div>
+          <label for="bookImportFile">Buch importieren</label>
+          <input type="file" id="bookImportFile" accept=".zip" />
+          <label style="font-weight:normal; display:flex; align-items:center; gap:0.4em; margin-top:0.4em;">
+            <input type="checkbox" id="bookImportReplace" style="width:auto;" />
+            Bestehende Freunde vorher löschen
+          </label>
+          <button type="button" id="bookImportBtn" class="secondary" style="margin-top:0.4em;">⬆️ Importieren</button>
+        </div>
+      </div>
+      <hr style="border:none; border-top:1px solid var(--line); margin:1.2em 0;" />
+      <div>
+        <h3 style="font-size:1.2rem;">Einzelnen Freund importieren</h3>
+        <p class="muted">Legt einen neuen Freund aus einer zuvor exportierten ZIP-Datei an.</p>
+        <input type="file" id="friendImportFile" accept=".zip" />
+        <button type="button" id="friendImportBtn" class="secondary" style="margin-top:0.4em;">⬆️ Importieren</button>
+      </div>
+      <div id="transferMsg"></div>
+    </section>
+  </div>
+
+<script src="/admin/settings.js"></script>
+</body>
+</html>
--- a/backend/public/admin/settings.js
+++ b/backend/public/admin/settings.js
@@ -0,0 +1,92 @@
+let settings = { publicBaseUrl: '', bookTitle: '' };
+
+async function checkSession() {
+  const res = await fetch('/api/session');
+  const data = await res.json();
+  if (data.role !== 'admin') {
+    window.location.href = '/';
+  }
+}
+
+async function loadSettings() {
+  const res = await fetch('/api/settings');
+  if (!res.ok) return;
+  const data = await res.json();
+  settings = data.settings || { publicBaseUrl: '', bookTitle: '' };
+  document.getElementById('publicBaseUrl').value = settings.publicBaseUrl || '';
+  document.getElementById('bookTitle').value = settings.bookTitle || '';
+}
+
+document.getElementById('saveSettingsBtn').addEventListener('click', async () => {
+  const publicBaseUrl = document.getElementById('publicBaseUrl').value.trim();
+  const bookTitle = document.getElementById('bookTitle').value.trim();
+  const res = await fetch('/api/settings', {
+    method: 'PUT',
+    headers: { 'Content-Type': 'application/json' },
+    body: JSON.stringify({ publicBaseUrl, bookTitle }),
+  });
+  const data = await res.json();
+  if (res.ok) {
+    settings = data.settings;
+    const msg = document.getElementById('settingsSaved');
+    msg.textContent = 'Gespeichert ✓';
+    msg.classList.add('show');
+    setTimeout(() => msg.classList.remove('show'), 1800);
+  }
+});
+
+document.getElementById('logoutBtn').addEventListener('click', async () => {
+  await fetch('/api/logout', { method: 'POST' });
+  window.location.href = '/';
+});
+
+// --- Sichern & Wiederherstellen ---
+function showTransferMsg(text, isError) {
+  const box = document.getElementById('transferMsg');
+  box.innerHTML = isError ? `<p class="error-msg">${text}</p>` : `<p class="saved-msg2 show">${text}</p>`;
+}
+
+document.getElementById('bookExportBtn').addEventListener('click', () => {
+  window.location.href = '/api/book/export';
+});
+
+document.getElementById('bookImportBtn').addEventListener('click', async () => {
+  const fileInput = document.getElementById('bookImportFile');
+  const file = fileInput.files[0];
+  if (!file) { showTransferMsg('Bitte zuerst eine ZIP-Datei auswählen.', true); return; }
+  const replaceAll = document.getElementById('bookImportReplace').checked;
+  if (replaceAll && !confirm('Wirklich ALLE bestehenden Freunde vor dem Import löschen?')) return;
+
+  const fd = new FormData();
+  fd.append('file', file);
+  fd.append('replaceAll', replaceAll ? 'true' : 'false');
+  showTransferMsg('Importiere...', false);
+  const res = await fetch('/api/book/import', { method: 'POST', body: fd });
+  const data = await res.json();
+  if (res.ok) {
+    showTransferMsg(`${data.imported.length} Freund(e) importiert: ${data.imported.join(', ') || '–'}`, false);
+    fileInput.value = '';
+  } else {
+    showTransferMsg(data.error || 'Import fehlgeschlagen.', true);
+  }
+});
+
+document.getElementById('friendImportBtn').addEventListener('click', async () => {
+  const fileInput = document.getElementById('friendImportFile');
+  const file = fileInput.files[0];
+  if (!file) { showTransferMsg('Bitte zuerst eine ZIP-Datei auswählen.', true); return; }
+  const fd = new FormData();
+  fd.append('file', file);
+  showTransferMsg('Importiere...', false);
+  const res = await fetch('/api/friends/import', { method: 'POST', body: fd });
+  const data = await res.json();
+  if (res.ok) {
+    showTransferMsg(`"${data.friend.name}" wurde importiert.`, false);
+    fileInput.value = '';
+  } else {
+    showTransferMsg(data.error || 'Import fehlgeschlagen.', true);
+  }
+});
+
+checkSession();
+loadSettings();
--- a/backend/public/book/book.css
+++ b/backend/public/book/book.css
@@ -51,3 +51,45 @@
 #pageIndicator { font-family: 'Caveat', cursive; font-size: 1.3rem; color: var(--ink-soft); }

 .empty-book { text-align: center; margin-top: 3em; }
+
+/* Deckblatt */
+.cover-page {
+  position: relative;
+  min-height: 640px;
+  border-radius: 18px;
+  background: var(--paper-2);
+  box-shadow: var(--shadow);
+  overflow: hidden;
+  border: 2px dashed var(--mustard);
+}
+.cover-stickers { position: absolute; inset: 0; }
+.cover-sticker {
+  position: absolute;
+  object-fit: cover;
+  aspect-ratio: 1 / 1;
+  border: 6px solid #fff;
+  border-radius: 8px;
+  box-shadow: 0 6px 16px rgba(0,0,0,0.22);
+}
+.cover-title-wrap {
+  position: relative;
+  z-index: 5;
+  text-align: center;
+  top: 42%;
+  transform: translateY(-50%);
+  padding: 0.6em 1.2em;
+}
+.cover-title {
+  display: inline-block;
+  font-size: 3.6rem;
+  background: rgba(255,253,247,0.92);
+  padding: 0.25em 0.7em;
+  border-radius: 12px;
+  box-shadow: 0 6px 18px rgba(0,0,0,0.18);
+  transform: rotate(-2deg);
+  max-width: 90%;
+}
+@media (max-width: 640px) {
+  .cover-page { min-height: 460px; }
+  .cover-title { font-size: 2.3rem; }
+}
--- a/backend/public/book/book.js
+++ b/backend/public/book/book.js
@@ -1,5 +1,6 @@
 let friends = [];
-let currentIndex = 0;
+let bookTitle = 'Unser Freundesbuch';
+let currentIndex = -1; // -1 = Deckblatt, 0..n-1 = Freunde

 const STECKBRIEF_LABELS = {
  spitzname: 'Spitzname',
@@ -17,6 +18,8 @@ const STECKBRIEF_LABELS = {
  sonstiges: 'Sonstiges',
 };

+const COVER_MAX_STICKERS = 24;
+
 function escapeHtml(str) {
  const div = document.createElement('div');
  div.textContent = str || '';
@@ -28,29 +31,86 @@ function randomRotation(seed) {
  return angles[seed % angles.length];
 }

-async function load() {
-  const res = await fetch('/api/book');
-  if (res.status === 401) { window.location.href = '/'; return; }
-  const data = await res.json();
-  friends = data.friends || [];
-  if (!friends.length) {
-    document.getElementById('bookRoot').innerHTML = `
-      <div class="empty-book">
-        <h2>Noch ist dieses Buch leer 📖</h2>
-        <p class="muted">Lege im Admin-Bereich Freunde an und teile den Link mit ihnen.</p>
-      </div>`;
-    return;
-  }
-  document.getElementById('bookNav').style.display = 'flex';
-  renderPage();
+// Einfacher, deterministischer Pseudo-Zufallsgenerator (gleiche Seed -> gleiches Ergebnis),
+// damit das Deckblatt bei jedem Aufruf ähnlich aussieht statt bei jedem Reload zu "springen".
+function seededRandom(seed) {
+  let t = (seed += 0x6d2b79f5);
+  t = Math.imul(t ^ (t >>> 15), t | 1);
+  t ^= t + Math.imul(t ^ (t >>> 7), t | 61);
+  return ((t ^ (t >>> 14)) >>> 0) / 4294967296;
 }

 function uploadUrl(folder, filename) {
  return `/uploads/${encodeURIComponent(folder)}/${encodeURIComponent(filename)}`;
 }

-function renderPage() {
-  const f = friends[currentIndex];
+async function load() {
+  const [bookRes, settingsRes] = await Promise.all([fetch('/api/book'), fetch('/api/settings')]);
+  if (bookRes.status === 401 || settingsRes.status === 401) { window.location.href = '/'; return; }
+  const bookData = await bookRes.json();
+  const settingsData = await settingsRes.json();
+  friends = bookData.friends || [];
+  bookTitle = (settingsData.settings && settingsData.settings.bookTitle) || 'Unser Freundesbuch';
+
+  document.getElementById('bookNav').style.display = 'flex';
+  renderPage();
+}
+
+// --- Deckblatt: Titel + "sticker-gebombte" Foto-Collage ---
+function collectStickerImages() {
+  const imgs = [];
+  friends.forEach((f) => {
+    if (f.profileImage) imgs.push({ folder: f.folderName, filename: f.profileImage });
+    (f.blocks || []).forEach((b) => {
+      if (b.type === 'image' && b.filename) imgs.push({ folder: f.folderName, filename: b.filename });
+      if (b.type === 'audio' && b.coverFilename) imgs.push({ folder: f.folderName, filename: b.coverFilename });
+    });
+  });
+  return imgs;
+}
+
+function renderCoverPage() {
+  const root = document.getElementById('bookRoot');
+  let imgs = collectStickerImages();
+
+  if (imgs.length > COVER_MAX_STICKERS) {
+    const step = imgs.length / COVER_MAX_STICKERS;
+    imgs = Array.from({ length: COVER_MAX_STICKERS }, (_, i) => imgs[Math.floor(i * step)]);
+  }
+
+  let stickersHtml = '';
+  if (imgs.length) {
+    const cols = Math.min(6, Math.max(3, Math.ceil(Math.sqrt(imgs.length * 1.6))));
+    const rows = Math.ceil(imgs.length / cols);
+    stickersHtml = imgs
+      .map((img, i) => {
+        const cellX = i % cols;
+        const cellY = Math.floor(i / cols);
+        const rx = seededRandom(i * 13 + 1);
+        const ry = seededRandom(i * 17 + 2);
+        const rr = seededRandom(i * 7 + 3);
+        const rs = seededRandom(i * 5 + 4);
+        const leftPct = ((cellX + 0.1 + rx * 0.8) / cols) * 100;
+        const topPct = ((cellY + 0.1 + ry * 0.8) / rows) * 100;
+        const rot = (rr * 50 - 25).toFixed(1);
+        const size = Math.round(85 + rs * 65);
+        return `<img class="cover-sticker" style="left:${leftPct}%; top:${topPct}%; width:${size}px; transform: rotate(${rot}deg);" src="${uploadUrl(img.folder, img.filename)}" />`;
+      })
+      .join('');
+  }
+
+  root.innerHTML = `
+    <div class="cover-page">
+      <div class="cover-stickers">${stickersHtml}</div>
+      <div class="cover-title-wrap">
+        <div class="tape" style="position:static; margin: 0 auto 0.4em; transform: rotate(-4deg);"></div>
+        <h1 class="cover-title">${escapeHtml(bookTitle)}</h1>
+      </div>
+    </div>
+  `;
+}
+
+function renderFriendPage(f) {
  const root = document.getElementById('bookRoot');

  const profileHtml = f.profileImage
@@ -77,7 +137,7 @@ function renderPage() {
        if (b.type === 'audio') {
          return `<div class="scrap-item audio-note" style="transform: rotate(${rot * 0.5}deg);">
            ${b.coverFilename ? `<img class="audio-cover" src="${uploadUrl(f.folderName, b.coverFilename)}" />` : ''}
-            <div>🎙️ ${b.caption ? escapeHtml(b.caption) : 'Sprachnachricht'}</div>
+            <div>🎙️${b.caption ? ' ' + escapeHtml(b.caption) : ''}</div>
            <audio controls src="${uploadUrl(f.folderName, b.filename)}"></audio>
          </div>`;
        }
@@ -104,14 +164,31 @@ function renderPage() {
      </div>
    </div>
  `;
+}

-  document.getElementById('pageIndicator').textContent = `Seite ${currentIndex + 1} von ${friends.length}`;
-  document.getElementById('prevBtn').disabled = currentIndex === 0;
-  document.getElementById('nextBtn').disabled = currentIndex === friends.length - 1;
+function renderPage() {
+  const root = document.getElementById('bookRoot');
+
+  if (currentIndex === -1) {
+    renderCoverPage();
+  } else if (!friends.length) {
+    root.innerHTML = `
+      <div class="empty-book">
+        <h2>Noch ist dieses Buch leer 📖</h2>
+        <p class="muted">Lege im Admin-Bereich Freunde an und teile den Link mit ihnen.</p>
+      </div>`;
+  } else {
+    renderFriendPage(friends[currentIndex]);
+  }
+
+  const indicator = document.getElementById('pageIndicator');
+  indicator.textContent = currentIndex === -1 ? 'Deckblatt' : `Seite ${currentIndex + 1} von ${friends.length}`;
+  document.getElementById('prevBtn').disabled = currentIndex === -1;
+  document.getElementById('nextBtn').disabled = currentIndex >= friends.length - 1;
 }

 document.getElementById('prevBtn').addEventListener('click', () => {
-  if (currentIndex > 0) { currentIndex--; renderPage(); window.scrollTo({ top: 0, behavior: 'smooth' }); }
+  if (currentIndex > -1) { currentIndex--; renderPage(); window.scrollTo({ top: 0, behavior: 'smooth' }); }
 });
 document.getElementById('nextBtn').addEventListener('click', () => {
  if (currentIndex < friends.length - 1) { currentIndex++; renderPage(); window.scrollTo({ top: 0, behavior: 'smooth' }); }