/* Baustelle PWA Hauptlogik. Alle Routen + Views in einer Datei. */

const main = () => document.getElementById('main');
const title = (s) => document.getElementById('page-title').textContent = s;

window.showToast = function (msg, kind) {
    const t = document.createElement('div');
    t.className = 'toast' + (kind ? ' ' + kind : '');
    t.textContent = msg;
    document.getElementById('toast-container').appendChild(t);
    setTimeout(() => t.remove(), 2800);
};

function showLoader(text) {
    main().innerHTML = '<div class="loader">' + (text || 'Lade…') + '</div>';
}

function setNav(visible, active) {
    const nav = document.getElementById('bottom-nav');
    nav.style.display = visible ? '' : 'none';
    nav.querySelectorAll('button').forEach(b => {
        b.classList.toggle('active', b.dataset.route === active);
    });
    // FAB folgt der Nav-Sichtbarkeit (auf Login verstecken, sonst überall erreichbar)
    const fab = document.getElementById('fab-new-order');
    if (fab) fab.hidden = !visible;
}

function setBack(visible, hash) {
    const btn = document.getElementById('back-btn');
    btn.style.display = visible ? '' : 'none';
    // Immer history.back() — offene Modals werden vom popstate-Handler geschlossen,
    // Hash-Routen per router.go() liegen als History-Einträge vor.
    btn.onclick = () => history.back();
}

/* ============================================================
 * Modal-Stack: Android-Back schließt oberstes Modal statt die App
 * Jedes Modal pusht beim Öffnen einen eigenen History-Eintrag.
 * popstate (Android-Back) pop-t den Stack und entfernt das Modal.
 * Programmatisches Schließen (closeModal) räumt synchron auf und
 * setzt ein Skip-Flag, damit der eigene history.back() kein
 * doppeltes Cleanup auslöst.
 * ============================================================ */
const modalStack = [];
let _skipNextPopstate = false;
let _lastBackAt = 0;

function pushModal(el, cleanup) {
    modalStack.push({ el, cleanup: cleanup || null });
    try {
        history.pushState({ _modal: true, _ts: Date.now() }, '', location.hash);
    } catch (e) { /* some browsers may block in strict sandboxes */ }
}

function closeModal(el) {
    const idx = modalStack.findIndex(m => m.el === el);
    if (idx === -1) {
        try { el.remove(); } catch {}
        return;
    }
    const entry = modalStack[idx];
    modalStack.splice(idx, 1);
    try { entry.el.remove(); } catch {}
    try { entry.cleanup && entry.cleanup(); } catch {}
    // Eigenen History-Eintrag wieder entfernen, ohne popstate-Recursion
    if (history.state && history.state._modal) {
        _skipNextPopstate = true;
        history.back();
    }
}

function isTopLevelHash(h) {
    const hh = (h || '').replace(/^#/, '').replace(/\/$/, '') || '/';
    return ['/', '/orders', '/today', '/customers', '/reports', '/settings'].includes(hh);
}

window.addEventListener('popstate', () => {
    if (_skipNextPopstate) { _skipNextPopstate = false; return; }
    if (modalStack.length > 0) {
        const top = modalStack.pop();
        try { top.el.remove(); } catch {}
        try { top.cleanup && top.cleanup(); } catch {}
        return;
    }
    if (isTopLevelHash(location.hash)) {
        const now = Date.now();
        if (now - _lastBackAt < 2000) return;
        _lastBackAt = now;
        try { history.pushState({}, '', location.hash); } catch {}
        showToast('Nochmal drücken zum Beenden');
    }
});

/* ============================================================
 * Share-Helper: teilt eine oder mehrere Dateien über Web Share API.
 *   shareFile(blob, filename, mime, title)               — einzelne Datei
 *   shareFiles([{blob,filename,mime}, …], title)         — mehrere Dateien
 * Fällt auf Toast zurück, wenn das Gerät kein Datei-Sharing unterstützt.
 * ============================================================ */
function _buildShareFile(blob, filename, mime) {
    const fname = filename || 'datei';
    // Name-Endung am MIME ausrichten, sonst lehnen manche Android-Apps ab
    let safeName = fname;
    const m = (mime || blob.type || '').toLowerCase();
    if (m === 'application/pdf' && !/\.pdf$/i.test(safeName)) safeName += '.pdf';
    return new File([blob], safeName, { type: mime || blob.type || 'application/octet-stream' });
}

async function shareFiles(items, titleHint) {
    const files = items.map(it => _buildShareFile(it.blob, it.filename, it.mime));
    try {
        if (!navigator.canShare || !navigator.share) {
            showToast('Teilen wird vom Browser nicht unterstützt', 'error');
            return false;
        }
        if (!navigator.canShare({ files })) {
            // Versuche einzeln — manche Geräte lehnen Batches bestimmter MIMEs ab
            if (files.length > 1) {
                showToast('Batch-Teilen wird nicht unterstützt — sende einzeln', 'error');
                return false;
            }
            showToast('Dieser Dateityp kann nicht geteilt werden', 'error');
            return false;
        }
        await navigator.share({
            files,
            title: titleHint || (files.length === 1 ? files[0].name : files.length + ' Dateien'),
            text: titleHint || '',
        });
        return true;
    } catch (e) {
        if (e && e.name !== 'AbortError') {
            console.warn('[Share]', e);
            showToast('Teilen fehlgeschlagen: ' + e.message, 'error');
        }
        return false;
    }
}

async function shareFile(blob, filename, mime, titleHint) {
    return shareFiles([{ blob, filename, mime }], titleHint);
}

/* ----- Auth-Check ----- */
async function ensureAuth() {
    const t = await api.getToken();
    if (!t) {
        router.go('#/login');
        return false;
    }
    return true;
}

/* ============================================================
 * ntfy-Benachrichtigungen (statt klassisches Web-Push)
 * ============================================================ */
let ntfyEventSource = null;
function stopNtfySubscription() {
    if (ntfyEventSource) {
        try { ntfyEventSource.close(); } catch (e) {}
        ntfyEventSource = null;
    }
}
function startNtfySubscription(server, topic) {
    stopNtfySubscription();
    if (!server || !topic) return;
    try {
        const url = server + '/' + encodeURIComponent(topic) + '/sse';
        ntfyEventSource = new EventSource(url);
        ntfyEventSource.onmessage = (e) => {
            try {
                const data = JSON.parse(e.data);
                if (data.event === 'message' && 'Notification' in window && Notification.permission === 'granted') {
                    const n = new Notification(data.title || 'Baustelle', {
                        body: data.message || '',
                        icon: './icons/icon-192.png',
                        badge: './icons/icon-192.png',
                        tag: 'baustelle-' + (data.id || Date.now()),
                    });
                    n.onclick = () => { window.focus(); n.close(); };
                }
            } catch (err) { /* ignore */ }
        };
        ntfyEventSource.onerror = () => {
            // Auto-Reconnect nach 10s
            setTimeout(() => startNtfySubscription(server, topic), 10000);
        };
    } catch (e) { console.warn('ntfy sub failed', e); }
}
// Beim App-Start automatisch subscriben, wenn Topic gesetzt
(async () => {
    try {
        const srv = await idb.get('ntfy_server');
        const topic = await idb.get('ntfy_topic');
        if (srv && topic && 'Notification' in window && Notification.permission === 'granted') {
            startNtfySubscription(srv, topic);
        }
    } catch (e) {}
})();

/* ============================================================
 * PIN-Schutz (optional, Settings → Sicherheit)
 * ============================================================ */
async function hashPin(pin) {
    const salt = crypto.getRandomValues(new Uint8Array(16));
    const saltStr = Array.from(salt).map(b => b.toString(16).padStart(2, '0')).join('');
    const enc = new TextEncoder();
    const data = enc.encode(saltStr + ':' + pin);
    const buf = await crypto.subtle.digest('SHA-256', data);
    const hash = Array.from(new Uint8Array(buf)).map(b => b.toString(16).padStart(2, '0')).join('');
    return { hash, salt: saltStr };
}
async function verifyPin(pin) {
    const salt = await idb.get('pin_salt');
    const stored = await idb.get('pin_hash');
    if (!salt || !stored) return false;
    const enc = new TextEncoder();
    const data = enc.encode(salt + ':' + pin);
    const buf = await crypto.subtle.digest('SHA-256', data);
    const hash = Array.from(new Uint8Array(buf)).map(b => b.toString(16).padStart(2, '0')).join('');
    return hash === stored;
}
function promptPin(title) {
    return new Promise((resolve) => {
        const modal = document.createElement('div');
        modal.className = 'fullscreen-modal pin-modal';
        modal.innerHTML = `
            <div class="pin-body">
                <div class="pin-icon">🔐</div>
                <div class="pin-title">${escapeHtml(title || 'PIN eingeben')}</div>
                <div class="pin-display"><span></span><span></span><span></span><span></span></div>
                <div class="pin-keypad"></div>
                <div class="pin-error" id="pin-error"></div>
            </div>
        `;
        const pad = modal.querySelector('.pin-keypad');
        const disp = modal.querySelectorAll('.pin-display span');
        let current = '';
        function render() {
            disp.forEach((el, i) => { el.classList.toggle('filled', i < current.length); });
        }
        function add(d) {
            if (current.length >= 4) return;
            current += d;
            render();
            if (current.length === 4) {
                setTimeout(() => { closeModal(modal); resolve(current); }, 150);
            }
        }
        function del() {
            current = current.slice(0, -1);
            render();
        }
        const keys = ['1','2','3','4','5','6','7','8','9','','0','←'];
        keys.forEach(k => {
            const b = document.createElement('button');
            b.className = 'pin-key';
            b.textContent = k;
            if (!k) { b.style.visibility = 'hidden'; }
            else if (k === '←') b.onclick = del;
            else b.onclick = () => add(k);
            pad.appendChild(b);
        });
        // Cancel-Button
        const cancel = document.createElement('button');
        cancel.className = 'pin-cancel';
        cancel.textContent = 'Abbrechen';
        cancel.onclick = () => { closeModal(modal); resolve(null); };
        modal.querySelector('.pin-body').appendChild(cancel);
        document.body.appendChild(modal);
        // Android-Back schließt Modal → Promise mit null auflösen
        // (doppeltes resolve ist per JS-Spec no-op, falls PIN bereits eingegeben war)
        pushModal(modal, () => resolve(null));
    });
}
async function promptNewPin() {
    const p1 = await promptPin('Neue 4-stellige PIN');
    if (!p1 || p1.length !== 4) return null;
    const p2 = await promptPin('PIN wiederholen');
    if (p2 !== p1) {
        alert('PINs stimmen nicht überein');
        return null;
    }
    return p1;
}

/**
 * Startet die App — fragt ggf. PIN ab bevor router läuft.
 */
window.appBoot = async function appBoot() {
    // JWT aktiv aus IndexedDB preloaden, bevor eine Route rennt.
    // Verhindert Race-Conditions, in denen ensureAuth() zu früh ein `null` bekommt
    // und nach Login-Screen redirectet, obwohl ein gültiges Token in IDB liegt.
    try {
        const t = await api.getToken();
        console.log('[boot] jwt vorhanden:', !!t);
    } catch (e) {
        console.warn('[boot] Token-Preload fehlgeschlagen', e);
    }

    // Bootstrap-Puffer: legt einen zusätzlichen History-Eintrag an, damit beim
    // ersten Android-Back der popstate-Handler greifen kann (Toast „Nochmal
    // drücken zum Beenden"), bevor die PWA wirklich verlassen wird.
    try {
        if (!history.state || !history.state._bootstrap) {
            history.pushState({ _bootstrap: true }, '', location.hash || '#/orders');
        }
    } catch {}

    // FAB: Click öffnet das Schnell-Auftrag-Modal
    const fab = document.getElementById('fab-new-order');
    if (fab && !fab.dataset.bound) {
        fab.dataset.bound = '1';
        fab.addEventListener('click', () => { openNewOrderModal(); });
    }

    const pinSet = await idb.get('pin_hash');
    if (!pinSet) return; // kein PIN-Schutz aktiv
    // Lockscreen: vollständiger Overlay bis richtige PIN
    document.getElementById('app').style.visibility = 'hidden';
    while (true) {
        const pin = await promptPin('PIN eingeben');
        if (pin && (await verifyPin(pin))) break;
        // Falsch → kurzes Feedback und nochmal
        showToast('Falsche PIN', 'error');
    }
    document.getElementById('app').style.visibility = '';
}


/* ====== ROUTES ====== */

router.on('/login', async () => {
    title('Anmelden');
    setNav(false);
    setBack(false);
    main().innerHTML = `
        <form class="login-form" id="login-form">
            <h2>🔧 Baustelle</h2>
            <input type="text" name="login" placeholder="Benutzername" autocomplete="username" required>
            <input type="password" name="password" placeholder="Passwort" autocomplete="current-password" required>
            <button type="submit" class="btn btn-large">Anmelden</button>
        </form>
    `;
    document.getElementById('login-form').addEventListener('submit', async (e) => {
        e.preventDefault();
        const fd = new FormData(e.target);
        try {
            await api.login(fd.get('login'), fd.get('password'));
            showToast('Erfolgreich angemeldet');
            router.go('#/orders');
        } catch (err) {
            showToast(err.message, 'error');
        }
    });
});

router.on('/today', async () => {
    if (!(await ensureAuth())) return;
    title('Heute');
    setNav(true, 'today');
    setBack(false);
    showLoader('Lade Aufträge…');

    try {
        // Wir nutzen einfach die offenen Aufträge und filtern clientseitig die von heute
        const data = await api.listOrders({ open: 1 });
        const today = new Date();
        today.setHours(0, 0, 0, 0);
        const tomorrow = new Date(today); tomorrow.setDate(tomorrow.getDate() + 1);
        const t_unix = today.getTime() / 1000;
        const tm_unix = tomorrow.getTime() / 1000;

        const todays = data.orders.filter(o => o.date >= t_unix && o.date < tm_unix);
        const open = data.orders.filter(o => o.date < t_unix);

        // Map-URL mit allen Adressen
        const allAddresses = [...todays, ...open.slice(0, 10)]
            .map(o => [o.customer.name, o.customer.address, o.customer.zip, o.customer.town].filter(Boolean).join(' '))
            .filter(Boolean);

        let html = '';
        if (todays.length) {
            const waypoints = todays.map(o => encodeURIComponent([o.customer.address, o.customer.zip, o.customer.town].filter(Boolean).join(' '))).join('/');
            html += `
                <div class="detail-section">
                    <h3>🚗 Route für heute (${todays.length})</h3>
                    <a class="btn" href="https://www.google.com/maps/dir/${waypoints}" target="_blank" style="text-decoration:none;text-align:center;">🗺 Alle in Google Maps öffnen</a>
                </div>
                <h4 style="opacity:0.7;margin:16px 0 8px;">Heute (${todays.length})</h4>
                ${renderOrderList(todays)}
            `;
        } else {
            html += '<div class="empty-state"><div class="icon">☀️</div>Keine Aufträge für heute geplant</div>';
        }
        if (open.length) {
            html += `<h4 style="opacity:0.7;margin:16px 0 8px;">Offen (${open.length})</h4>${renderOrderList(open.slice(0, 20))}`;
        }

        main().innerHTML = html;
        document.querySelectorAll('.order-card').forEach(c => {
            c.addEventListener('click', () => router.go('#/orders/' + c.dataset.id));
        });
    } catch (e) {
        main().innerHTML = '<div class="empty-state"><div class="icon">⚠️</div>' + e.message + '</div>';
    }
});

router.on('/orders', async () => {
    if (!(await ensureAuth())) return;
    title('Aufträge');
    setNav(true, 'orders');
    setBack(false);
    showLoader('Lade Aufträge…');

    // Filter-Status aus localStorage laden (persistiert)
    let showAllOrders = localStorage.getItem('pwa_show_all_orders') === '1';

    async function loadOrders(q = '') {
        const opts = q ? { q } : {};
        if (!showAllOrders) opts.open = 1;
        return api.listOrders(opts);
    }

    function bindOrderCards() {
        document.querySelectorAll('.order-card').forEach(c => {
            c.addEventListener('click', () => router.go('#/orders/' + c.dataset.id));
        });
    }

    try {
        const data = await loadOrders();
        if (!data.orders.length) {
            main().innerHTML = `
                <div class="search-bar">
                    <input type="search" id="order-search" placeholder="🔍 Suchen…">
                    <label class="filter-toggle"><input type="checkbox" id="show-all-toggle" ${showAllOrders ? 'checked' : ''}> Auch abgeschlossene</label>
                </div>
                <div class="empty-state"><div class="icon">📭</div>${showAllOrders ? 'Keine Aufträge gefunden' : 'Keine offenen Aufträge'}</div>
            `;
            document.getElementById('show-all-toggle').addEventListener('change', async (e) => {
                showAllOrders = e.target.checked;
                localStorage.setItem('pwa_show_all_orders', showAllOrders ? '1' : '0');
                showLoader('Lade Aufträge…');
                router.go('#/orders');
            });
            return;
        }
        const html = `
            <div class="search-bar">
                <input type="search" id="order-search" placeholder="🔍 Suchen…">
                <label class="filter-toggle"><input type="checkbox" id="show-all-toggle" ${showAllOrders ? 'checked' : ''}> Auch abgeschlossene</label>
            </div>
            <div id="order-list">${renderOrderList(data.orders)}</div>
        `;
        main().innerHTML = html;
        bindOrderCards();

        document.getElementById('order-search').addEventListener('input', async (e) => {
            const q = e.target.value;
            const d = await loadOrders(q);
            document.getElementById('order-list').innerHTML = renderOrderList(d.orders);
            bindOrderCards();
        });

        document.getElementById('show-all-toggle').addEventListener('change', async (e) => {
            showAllOrders = e.target.checked;
            localStorage.setItem('pwa_show_all_orders', showAllOrders ? '1' : '0');
            const q = document.getElementById('order-search').value;
            const d = await loadOrders(q);
            document.getElementById('order-list').innerHTML = renderOrderList(d.orders);
            bindOrderCards();
        });
    } catch (e) {
        main().innerHTML = '<div class="empty-state"><div class="icon">⚠️</div>' + e.message + '</div>';
    }
});

function renderOrderList(orders) {
    return orders.map(o => `
        <div class="order-card" data-id="${o.id}">
            <div class="ref">${escapeHtml(o.ref)}${o.ref_client ? ` <span class="ref-client">— ${escapeHtml(o.ref_client)}</span>` : ''}</div>
            <div class="name">${escapeHtml(o.customer.name || '')}</div>
            <div class="meta">
                <span>${escapeHtml((o.customer.zip || '') + ' ' + (o.customer.town || ''))}</span>
                ${o.bericht_count > 0 ? `<span class="badge">📑 ${o.bericht_count}</span>` : ''}
            </div>
        </div>
    `).join('');
}

router.on('/orders/:id', async (args) => {
    if (!(await ensureAuth())) return;
    setNav(true, 'orders');
    setBack(true, '#/orders');
    showLoader('Lade Auftrag…');

    try {
        const data = await api.getOrder(args.id);
        const photos = await api.listOrderPhotos(args.id).catch(() => ({ photos: [] }));
        title(data.order.ref);

        // Nach MIME-Type aufteilen
        const imagePhotos = photos.photos.filter(p => (p.mime || '').startsWith('image/'));
        const audioFiles = photos.photos.filter(p => (p.mime || '').startsWith('audio/') || /\.(webm|mp3|ogg|m4a|wav)$/i.test(p.filename));
        const otherDocs = photos.photos.filter(p =>
            !(p.mime || '').startsWith('image/') &&
            !(p.mime || '').startsWith('audio/') &&
            !/\.(webm|mp3|ogg|m4a|wav)$/i.test(p.filename));

        main().innerHTML = `
            <div class="detail-section">
                <h3>Kunde</h3>
                <p><strong>${escapeHtml(data.customer.name)}</strong></p>
                <p>${escapeHtml(data.customer.address || '')}</p>
                <p>${escapeHtml((data.customer.zip || '') + ' ' + (data.customer.town || ''))}</p>
                ${data.customer.phone ? `<p><a href="tel:${escapeHtml(data.customer.phone)}">📞 ${escapeHtml(data.customer.phone)}</a></p>` : ''}
            </div>

            ${data.order.auftragsbeschreibung ? `
            <div class="detail-section">
                <h3>Beschreibung</h3>
                <p>${escapeHtml(data.order.auftragsbeschreibung)}</p>
            </div>` : ''}

            <button class="btn btn-large" id="btn-take-photo">📷 Foto aufnehmen</button>
            <input type="file" id="camera-input" class="hidden-input" accept="image/*" capture="environment" multiple>
            <button class="btn btn-secondary" id="btn-pick-photo">📂 Aus Galerie wählen</button>
            <input type="file" id="gallery-input" class="hidden-input" accept="image/*" multiple>
            <button class="btn btn-secondary" id="btn-voice">🎙 Sprachnotiz aufnehmen</button>
            <button class="btn btn-secondary" id="btn-material">📦 Materialliste</button>
            <button class="btn btn-secondary" id="btn-new-report">📑 Neuen Bericht anlegen…</button>

            <div class="detail-section" style="margin-top:16px;">
                <div class="photo-section-head">
                    <h3 style="margin:0;">Hochgeladene Fotos (${imagePhotos.length})</h3>
                    ${imagePhotos.length ? '<button class="btn btn-small" id="btn-select-mode" title="Mehrfachauswahl">☑ Auswählen</button>' : ''}
                </div>
                <div class="photo-grid" id="photo-grid">
                    ${imagePhotos.map(p => `<div class="thumb" data-relpath="${escapeHtml(p.relpath)}"><div class="thumb-placeholder">⏳</div><div class="thumb-check">✓</div></div>`).join('')}
                </div>
            </div>
            ${audioFiles.length ? `
            <div class="detail-section">
                <h3>🎙 Sprachnotizen (${audioFiles.length})</h3>
                <div class="audio-list">
                    ${audioFiles.map(a => `<div class="audio-item" data-relpath="${escapeHtml(a.relpath)}" data-mime="${escapeHtml(a.mime || 'audio/webm')}">
                        <span class="audio-name">${escapeHtml(a.filename)}</span>
                        <button class="audio-play" title="Abspielen">▶</button>
                        <button class="audio-transcribe" title="Transkribieren (Whisper)">📝</button>
                    </div>`).join('')}
                </div>
            </div>` : ''}

            ${otherDocs.length ? `
            <div class="detail-section">
                <h3>Weitere Dokumente (${otherDocs.length})</h3>
                <div class="doc-list">
                    ${otherDocs.map(p => `<div class="doc-item" data-relpath="${escapeHtml(p.relpath)}" data-mime="${escapeHtml(p.mime || '')}" data-filename="${escapeHtml(p.filename)}">
                        <span class="doc-icon">${docIconFor(p.filename, p.mime)}</span>
                        <div class="doc-meta">
                            <div class="doc-name">${escapeHtml(p.filename)}</div>
                            <div class="doc-sub">${formatFileSize(p.size)}${p.date ? ' · ' + formatShortDate(p.date) : ''}</div>
                        </div>
                        <button class="doc-open" title="Öffnen">↗</button>
                    </div>`).join('')}
                </div>
            </div>` : ''}
        `;

        // Foto-Thumbnails: Tap = Vollbild-Modal (oder Auswahl im Select-Modus)
        const photoGrid = document.getElementById('photo-grid');
        photoGrid.querySelectorAll('.thumb').forEach(t => {
            t.addEventListener('click', () => {
                if (photoGrid.classList.contains('selecting')) {
                    t.classList.toggle('selected');
                    updateSelectBar();
                } else {
                    openPhotoModal(args.id, t.dataset.relpath);
                }
            });
        });

        // Mehrfachauswahl-Modus
        const selectBtn = document.getElementById('btn-select-mode');
        if (selectBtn) selectBtn.onclick = () => startSelectMode();

        function startSelectMode() {
            photoGrid.classList.add('selecting');
            renderSelectBar();
            updateSelectBar();
        }
        function endSelectMode() {
            photoGrid.classList.remove('selecting');
            photoGrid.querySelectorAll('.thumb.selected').forEach(x => x.classList.remove('selected'));
            const bar = document.getElementById('select-bar');
            if (bar) bar.remove();
        }
        function renderSelectBar() {
            if (document.getElementById('select-bar')) return;
            const bar = document.createElement('div');
            bar.id = 'select-bar';
            bar.className = 'select-bar';
            bar.innerHTML = `
                <button class="icon-btn" id="sb-cancel" title="Abbrechen">✕</button>
                <div class="sb-info" id="sb-info">0 ausgewählt</div>
                <button class="icon-btn" id="sb-all" title="Alle">◎</button>
                <button class="icon-btn" id="sb-share" title="Teilen" disabled>📤</button>
            `;
            document.body.appendChild(bar);
            bar.querySelector('#sb-cancel').onclick = endSelectMode;
            bar.querySelector('#sb-all').onclick = () => {
                const thumbs = photoGrid.querySelectorAll('.thumb[data-relpath]');
                const anyUn = Array.from(thumbs).some(t => !t.classList.contains('selected'));
                thumbs.forEach(t => t.classList.toggle('selected', anyUn));
                updateSelectBar();
            };
            bar.querySelector('#sb-share').onclick = () => shareSelected();
        }
        function updateSelectBar() {
            const n = photoGrid.querySelectorAll('.thumb.selected').length;
            const info = document.getElementById('sb-info');
            const share = document.getElementById('sb-share');
            if (info) info.textContent = n + ' ausgewählt';
            if (share) share.disabled = n === 0;
        }
        async function shareSelected() {
            const sel = Array.from(photoGrid.querySelectorAll('.thumb.selected'));
            if (!sel.length) return;
            showToast('Lade ' + sel.length + ' Foto' + (sel.length === 1 ? '' : 's') + '…');
            const items = [];
            for (const t of sel) {
                const rp = t.dataset.relpath;
                try {
                    const f = await api.getFileBlobUrl(rp);
                    if (f) items.push({ blob: f.blob, filename: rp.split('/').pop(), mime: f.mime });
                } catch (e) { console.warn('Share-Load', rp, e); }
            }
            if (!items.length) { showToast('Keine Dateien geladen', 'error'); return; }
            const ok = await shareFiles(items, 'Fotos vom Auftrag');
            if (ok) endSelectMode();
        }

        // Weitere Dokumente: Tap = Öffnen (PDF inline, sonst Download)
        document.querySelectorAll('.doc-list .doc-item').forEach(el => {
            el.addEventListener('click', async () => {
                const rel = el.dataset.relpath;
                const filename = el.dataset.filename;
                el.classList.add('loading');
                const res = await api.getFileBlobUrl(rel);
                el.classList.remove('loading');
                if (!res) { showToast('Datei konnte nicht geladen werden', 'error'); return; }
                openFileViewer(res, filename, rel);
            });
        });

        // Sprachnotiz
        document.getElementById('btn-voice').onclick = () => openVoiceModal(args.id);

        // Neuen Bericht anlegen
        document.getElementById('btn-new-report').onclick = () => openNewReportModal(args.id);

        // Materialliste
        document.getElementById('btn-material').onclick = () => openMaterialModal('order', args.id);

        // Transkribieren
        document.querySelectorAll('.audio-item .audio-transcribe').forEach(btn => {
            btn.addEventListener('click', async (e) => {
                const item = e.target.closest('.audio-item');
                const rel = item.dataset.relpath;
                btn.textContent = '⏳';
                try {
                    const r = await api.transcribeAudio(rel);
                    const text = r.text || '(leer)';
                    const existing = item.querySelector('.audio-transcript');
                    if (existing) existing.remove();
                    const box = document.createElement('div');
                    box.className = 'audio-transcript';
                    box.textContent = text;
                    item.appendChild(box);
                    btn.textContent = '📝';
                    showToast('✓ Transkribiert');
                } catch (err) {
                    btn.textContent = '📝';
                    showToast('Whisper-Fehler: ' + err.message, 'error');
                }
            });
        });

        // Audio-Files abspielen
        document.querySelectorAll('.audio-item .audio-play').forEach(btn => {
            btn.addEventListener('click', async (e) => {
                const item = e.target.closest('.audio-item');
                const rel = item.dataset.relpath;
                const mime = item.dataset.mime || 'audio/webm';
                // Existierenden Player toggeln
                let player = item.querySelector('audio');
                if (player) {
                    if (player.paused) player.play();
                    else player.pause();
                    return;
                }
                btn.textContent = '⏳';
                try {
                    const t = await api.getToken();
                    const params = new URLSearchParams({ relpath: rel, jwt: t });
                    const r = await fetch(window.location.origin + '/custom/bericht/api/photo.php?' + params.toString());
                    if (!r.ok) throw new Error('Load failed');
                    const blob = await r.blob();
                    const url = URL.createObjectURL(new Blob([blob], { type: mime }));
                    player = document.createElement('audio');
                    player.controls = true;
                    player.src = url;
                    player.style.width = '100%';
                    player.style.marginTop = '8px';
                    item.appendChild(player);
                    player.play();
                    btn.textContent = '⏸';
                    player.onplay = () => btn.textContent = '⏸';
                    player.onpause = () => btn.textContent = '▶';
                } catch (err) {
                    showToast('Audio laden fehlgeschlagen: ' + err.message, 'error');
                    btn.textContent = '▶';
                }
            });
        });

        loadThumbs();

        const camInput = document.getElementById('camera-input');
        const galInput = document.getElementById('gallery-input');
        document.getElementById('btn-take-photo').onclick = () => camInput.click();
        document.getElementById('btn-pick-photo').onclick = () => galInput.click();

        async function handleFiles(files) {
            for (const f of files) {
                await uploadPhoto(args.id, f);
            }
            // Nach Upload einfach die Route neu rendern — so werden Select-Mode,
            // Click-Handler und Thumbnails sauber neu aufgebaut.
            router.navigate();
        }
        camInput.addEventListener('change', () => handleFiles(camInput.files));
        galInput.addEventListener('change', () => handleFiles(galInput.files));
    } catch (e) {
        main().innerHTML = '<div class="empty-state"><div class="icon">⚠️</div>' + e.message + '</div>';
    }
});

async function uploadPhoto(orderId, file) {
    showToast('Optimiere & sende ' + file.name);
    const blob = await resizeImage(file, 2000);
    if (!navigator.onLine) {
        await offline.enqueuePhoto(orderId, blob, file.name);
        showToast('Offline — Foto in Queue', 'warn');
        return;
    }
    try {
        await api.uploadOrderPhoto(orderId, blob, file.name);
        showToast('✓ ' + file.name + ' hochgeladen');
    } catch (e) {
        await offline.enqueuePhoto(orderId, blob, file.name);
        showToast('Upload fehlgeschlagen — in Queue', 'error');
    }
}

async function resizeImage(file, maxSide) {
    return new Promise((resolve) => {
        const img = new Image();
        const url = URL.createObjectURL(file);
        img.onload = () => {
            URL.revokeObjectURL(url);
            const scale = Math.min(1, maxSide / Math.max(img.width, img.height));
            if (scale === 1) { resolve(file); return; }
            const c = document.createElement('canvas');
            c.width  = Math.round(img.width * scale);
            c.height = Math.round(img.height * scale);
            c.getContext('2d').drawImage(img, 0, 0, c.width, c.height);
            c.toBlob(b => resolve(b || file), 'image/jpeg', 0.85);
        };
        img.onerror = () => { URL.revokeObjectURL(url); resolve(file); };
        img.src = url;
    });
}

/**
 * Lädt alle sichtbaren Thumbnails im aktuellen Photo-Grid.
 * Nutzt /api/photo.php mit JWT (Header kann <img src> nicht schicken,
 * deshalb Blob-URLs).
 */
async function loadThumbs() {
    const thumbs = document.querySelectorAll('.photo-grid .thumb[data-relpath]');
    for (const t of thumbs) {
        const rel = t.dataset.relpath;
        try {
            // Erst Thumbnail versuchen (_small), bei Misserfolg das Original
            let url = await api.getPhotoBlobUrl(rel, 'small');
            if (!url) url = await api.getPhotoBlobUrl(rel);
            if (url) {
                t.innerHTML = '<img loading="lazy" src="' + url + '">';
            } else {
                t.innerHTML = '<div class="thumb-placeholder">❌</div>';
            }
        } catch (e) {
            t.innerHTML = '<div class="thumb-placeholder">❌</div>';
        }
    }
}

router.on('/customers', async () => {
    if (!(await ensureAuth())) return;
    title('Kunden');
    setNav(true, 'customers');
    setBack(false);
    showLoader('Lade Kunden…');

    try {
        const data = await api.listCustomers();
        if (!data.customers.length) {
            main().innerHTML = '<div class="empty-state"><div class="icon">👥</div>Keine Kunden</div>';
            return;
        }
        main().innerHTML = `
            <div class="search-bar"><input type="search" id="cust-search" placeholder="🔍 Kunde suchen…"></div>
            <div id="cust-list">${renderCustomerList(data.customers)}</div>
        `;
        bindCustomerCards();
        document.getElementById('cust-search').addEventListener('input', async (e) => {
            const d = await api.listCustomers({ q: e.target.value });
            document.getElementById('cust-list').innerHTML = renderCustomerList(d.customers);
            bindCustomerCards();
        });
    } catch (e) {
        main().innerHTML = '<div class="empty-state"><div class="icon">⚠️</div>' + e.message + '</div>';
    }
});

function renderCustomerList(list) {
    return list.map(c => `
        <div class="order-card customer-card" data-id="${c.id}">
            <div class="ref">${escapeHtml(c.name || '')}</div>
            <div class="name">${escapeHtml((c.zip || '') + ' ' + (c.town || '')).trim() || '—'}</div>
            <div class="meta">
                <span>${c.phone ? '📞 ' + escapeHtml(c.phone) : ''}</span>
                ${c.bericht_count > 0 ? `<span class="badge">📑 ${c.bericht_count}</span>` : ''}
            </div>
        </div>
    `).join('');
}

function bindCustomerCards() {
    document.querySelectorAll('.customer-card').forEach(c => {
        c.addEventListener('click', () => router.go('#/customers/' + c.dataset.id));
    });
}

router.on('/customers/:id', async (args) => {
    if (!(await ensureAuth())) return;
    setNav(true, 'customers');
    setBack(true, '#/customers');
    showLoader('Lade Kunde…');

    try {
        const data = await api.getCustomer(args.id);
        title(data.customer.name);

        const addr = [data.customer.address, (data.customer.zip || '') + ' ' + (data.customer.town || '')]
            .map(s => (s || '').trim()).filter(Boolean).join('\n');

        main().innerHTML = `
            <div class="detail-section">
                <h3>Stammdaten</h3>
                <p><strong>${escapeHtml(data.customer.name)}</strong></p>
                ${data.customer.code ? `<p class="label">Kundennr: ${escapeHtml(data.customer.code)}</p>` : ''}
                ${addr ? `<p>${escapeHtml(addr).replace(/\n/g, '<br>')}</p>` : ''}
                ${data.customer.phone ? `<p><a href="tel:${escapeHtml(data.customer.phone)}">📞 ${escapeHtml(data.customer.phone)}</a></p>` : ''}
                ${data.customer.email ? `<p><a href="mailto:${escapeHtml(data.customer.email)}">✉ ${escapeHtml(data.customer.email)}</a></p>` : ''}
                ${data.customer.siret || data.customer.vat ? `<p class="label">USt-ID: ${escapeHtml(data.customer.vat || '')}</p>` : ''}
                <div class="customer-actions">
                    ${data.customer.address || data.customer.town ? `<a class="btn btn-secondary" href="https://www.google.com/maps/search/?api=1&query=${encodeURIComponent(data.customer.name + ' ' + (data.customer.address||'') + ' ' + (data.customer.zip||'') + ' ' + (data.customer.town||''))}" target="_blank">🗺 Route</a>` : ''}
                </div>
            </div>

            ${data.orders.length ? `
            <div class="detail-section">
                <h3>Aufträge (${data.orders.length})</h3>
                ${data.orders.map(o => `
                    <div class="mini-card" data-order-id="${o.id}">
                        <div class="mini-ref">${escapeHtml(o.ref)}</div>
                        <div class="mini-meta">${formatDate(o.date)} · ${formatEur(o.total)}${o.bericht_count > 0 ? ' · 📑 ' + o.bericht_count : ''}</div>
                    </div>
                `).join('')}
            </div>` : ''}

            ${data.reports.length ? `
            <div class="detail-section">
                <h3>Berichte (${data.reports.length})</h3>
                ${data.reports.map(r => `
                    <div class="mini-card" data-report-id="${r.id}">
                        <div class="mini-ref">${escapeHtml(r.ref)} <span class="${r.status === 1 ? 'status-final' : 'status-draft'}">${r.status === 1 ? 'Final' : 'Entwurf'}</span></div>
                        <div class="mini-meta">${escapeHtml(r.titel || '')} · ${formatDate(r.datec)}</div>
                    </div>
                `).join('')}
            </div>` : ''}

            ${data.invoices.length ? `
            <div class="detail-section">
                <h3>Rechnungen (${data.invoices.length})</h3>
                ${data.invoices.map(i => `
                    <div class="mini-card">
                        <div class="mini-ref">${escapeHtml(i.ref)}</div>
                        <div class="mini-meta">${formatDate(i.date)} · ${formatEur(i.total)}</div>
                    </div>
                `).join('')}
            </div>` : ''}
        `;

        document.querySelectorAll('.mini-card[data-order-id]').forEach(el => {
            el.addEventListener('click', () => router.go('#/orders/' + el.dataset.orderId));
        });
        document.querySelectorAll('.mini-card[data-report-id]').forEach(el => {
            el.addEventListener('click', () => router.go('#/reports/' + el.dataset.reportId));
        });
    } catch (e) {
        main().innerHTML = '<div class="empty-state"><div class="icon">⚠️</div>' + e.message + '</div>';
    }
});

function formatDate(unix) {
    if (!unix) return '—';
    const d = new Date(unix * 1000);
    return d.toLocaleDateString('de-DE', { year: 'numeric', month: '2-digit', day: '2-digit' });
}
function formatEur(v) {
    if (v == null) return '';
    return new Intl.NumberFormat('de-DE', { style: 'currency', currency: 'EUR' }).format(v);
}

router.on('/reports', async () => {
    if (!(await ensureAuth())) return;
    title('Berichte');
    setNav(true, 'reports');
    setBack(false);
    showLoader('Lade Berichte…');
    try {
        const data = await api.listReports();
        if (!data.reports.length) {
            main().innerHTML = '<div class="empty-state"><div class="icon">📑</div>Noch keine Berichte</div>';
            return;
        }
        main().innerHTML = data.reports.map(r => {
            const statusLabel = r.status === 1 ? 'Final' : 'Entwurf';
            const statusClass = r.status === 1 ? 'status-final' : 'status-draft';
            const sourceIcon = r.element_type === 'order' ? '🛒' : (r.element_type === 'invoice' ? '📄' : '📋');
            return `
            <div class="order-card" data-id="${r.id}">
                <div class="ref">${escapeHtml(r.ref)} <span class="${statusClass}">${statusLabel}</span></div>
                <div class="name">${escapeHtml(r.titel || '')}</div>
                <div class="meta">
                    <span>${sourceIcon} ${escapeHtml(r.parent_ref || '')}</span>
                    <span class="badge">${r.page_count} Seite${r.page_count === 1 ? '' : 'n'}</span>
                </div>
            </div>`;
        }).join('');
        document.querySelectorAll('.order-card').forEach(c => {
            c.addEventListener('click', () => router.go('#/reports/' + c.dataset.id));
        });
    } catch (e) {
        main().innerHTML = '<div class="empty-state"><div class="icon">⚠️</div>' + e.message + '</div>';
    }
});

router.on('/reports/:id', async (args) => {
    if (!(await ensureAuth())) return;
    setNav(true, 'reports');
    setBack(true, '#/reports');
    showLoader('Lade Bericht…');

    try {
        const data = await api.getReport(args.id);
        title(data.report.ref);

        const statusLabel = data.report.status === 1 ? 'Final' : 'Entwurf';
        const hasPages = data.pages.length > 0;
        const finalizeLabel = data.report.status === 1 ? '🔄 PDF neu erzeugen' : '📑 Bericht finalisieren (PDF)';

        main().innerHTML = `
            <div class="detail-section">
                <h3>Bericht</h3>
                <p><strong>${escapeHtml(data.report.titel || data.report.ref)}</strong></p>
                <p class="label">Auftrag: ${escapeHtml(data.report.auftragsnummer || '—')}</p>
                <p class="label">Format: ${escapeHtml(data.report.page_format || 'A4')} ${data.report.page_orientation === 'L' ? 'Quer' : 'Hoch'}</p>
                <p class="label">Seiten: ${data.pages.length}</p>
                <p class="label">Status: <strong>${statusLabel}</strong></p>
            </div>

            ${hasPages ? `
            <div class="photo-grid" id="report-pages">
                ${data.pages.map((p, i) => `
                    <div class="thumb report-page-thumb" data-relpath="${escapeHtml(p.source_path)}" data-page-id="${p.id}" data-note="${escapeHtml(p.note || '')}" data-title="${escapeHtml(p.title || '')}">
                        <div class="thumb-placeholder">⏳</div>
                        <div class="page-num">${i + 1}</div>
                        ${p.title ? `<div class="page-title-badge">${escapeHtml(p.title)}</div>` : ''}
                    </div>
                `).join('')}
            </div>` : '<div class="empty-state"><div class="icon">📭</div>Dieser Bericht hat noch keine Seiten. Fotos aufnehmen, um Seiten hinzuzufügen.</div>'}

            <button class="btn btn-large" id="btn-finalize" ${hasPages ? '' : 'disabled'}>${finalizeLabel}</button>
            ${hasPages ? '<button class="btn btn-secondary" id="btn-view-pdf">👁 PDF-Vorschau</button>' : ''}
            <button class="btn btn-secondary" id="btn-signature">✍️ Kunden-Unterschrift hinzufügen</button>
            <button class="btn btn-secondary" id="btn-open-editor">✏️ Im Desktop-Editor öffnen</button>
            <button class="btn btn-danger" id="btn-delete-report">Bericht löschen</button>
        `;

        loadThumbs();

        // Tap = Aktionen, Long-Press = Drag-Sort
        bindReportPageInteractions(args.id);

        // PDF-Vorschau
        const pdfBtn = document.getElementById('btn-view-pdf');
        if (pdfBtn) pdfBtn.onclick = async () => {
            showToast('PDF wird geladen…');
            const url = await api.getPdfBlobUrl(args.id);
            if (!url) { showToast('PDF konnte nicht geladen werden', 'error'); return; }
            const fname = (data.report && data.report.ref ? data.report.ref : ('bericht-' + args.id)) + '.pdf';
            openPdfModal(url, fname);
        };

        // Unterschrift
        document.getElementById('btn-signature').onclick = () => openSignatureModal(args.id);

        const finalizeBtn = document.getElementById('btn-finalize');
        if (finalizeBtn) {
            finalizeBtn.onclick = async () => {
                if (!hasPages) { showToast('Bericht hat keine Seiten', 'warn'); return; }
                if (!confirm(data.report.status === 1
                    ? 'PDF neu erzeugen und unter den verknüpften Dokumenten ablegen?'
                    : 'Bericht jetzt finalisieren und PDF erzeugen?')) return;
                showToast('PDF wird erzeugt…');
                try {
                    const r = await api.finalizeReport(args.id);
                    showToast('✓ PDF erstellt: ' + r.filename);
                    setTimeout(() => router.go('#/reports/' + args.id), 800);
                } catch (e) {
                    showToast('Fehler: ' + e.message, 'error');
                }
            };
        }
        document.getElementById('btn-open-editor').onclick = () => {
            window.open(window.location.origin + '/custom/bericht/bericht_card.php?berichtid=' + args.id, '_blank');
        };

        document.getElementById('btn-delete-report').onclick = () => {
            const modal = document.createElement('div');
            modal.className = 'fullscreen-modal';
            modal.innerHTML = `
                <div class="modal-header">
                    <h2>Bericht löschen</h2>
                    <button class="close-btn" id="dr-cancel">&times;</button>
                </div>
                <div class="modal-body" style="padding:20px;text-align:center;">
                    <p style="font-size:16px;margin:16px 0;">Bericht <strong>${escapeHtml(data.report.ref)}</strong> mit ${data.pages.length} Seite${data.pages.length === 1 ? '' : 'n'} wirklich löschen?</p>
                    <p style="opacity:0.6;font-size:13px;">Alle Seiten und Annotationen werden unwiderruflich entfernt.</p>
                    <div style="display:flex;gap:12px;justify-content:center;margin-top:24px;">
                        <button class="btn btn-secondary" id="dr-no">Abbrechen</button>
                        <button class="btn btn-danger" id="dr-yes">Endgültig löschen</button>
                    </div>
                </div>
            `;
            document.body.appendChild(modal);
            pushModal(modal);
            modal.querySelector('#dr-cancel').onclick = () => closeModal(modal);
            modal.querySelector('#dr-no').onclick = () => closeModal(modal);
            modal.querySelector('#dr-yes').onclick = async () => {
                try {
                    await api.deleteReport(args.id);
                    closeModal(modal);
                    showToast('Bericht gelöscht');
                    router.go('#/reports');
                } catch (e) {
                    showToast('Fehler: ' + e.message, 'error');
                }
            };
        };
    } catch (e) {
        main().innerHTML = '<div class="empty-state"><div class="icon">⚠️</div>' + e.message + '</div>';
    }
});

router.on('/settings', async () => {
    if (!(await ensureAuth())) return;
    title('Einstellungen');
    setNav(true, 'settings');
    setBack(false);

    const user = await idb.get('user') || {};
    const pinEnabled = !!(await idb.get('pin_hash'));
    const ntfyTopic = await idb.get('ntfy_topic') || '';
    const ntfyServer = await idb.get('ntfy_server') || 'https://notify.data-it-solution.de';

    main().innerHTML = `
        <div class="detail-section">
            <h3>Konto</h3>
            <p><strong>${escapeHtml(user.name || user.login || 'Unbekannt')}</strong></p>
            <p class="label">${escapeHtml(user.login || '')}</p>
        </div>

        <div class="detail-section">
            <h3>🔔 Benachrichtigungen</h3>
            <p class="label">Per ntfy-Topic. Wenn gesetzt, zeigt die App Notifications bei neuen Nachrichten (z. B. neue Aufträge, Team-Pings).</p>
            <input type="text" id="ntfy-server" placeholder="https://notify.data-it-solution.de" value="${escapeHtml(ntfyServer)}" style="width:100%;padding:10px;background:#2a2a30;color:#fff;border:1px solid #444;border-radius:6px;box-sizing:border-box;margin-bottom:6px;">
            <input type="text" id="ntfy-topic" placeholder="z. B. baustelle-eddy" value="${escapeHtml(ntfyTopic)}" style="width:100%;padding:10px;background:#2a2a30;color:#fff;border:1px solid #444;border-radius:6px;box-sizing:border-box;">
            <button class="btn btn-secondary" id="btn-ntfy-save" style="margin-top:6px;">💾 Speichern & Abonnieren</button>
            <button class="btn btn-secondary" id="btn-ntfy-test">🔔 Test-Nachricht senden</button>
            <p class="label" id="ntfy-status"></p>
        </div>

        <div class="detail-section">
            <h3>Sicherheit</h3>
            <p class="label">PIN-Schutz beim App-Start — nützlich falls das Handy verloren geht.</p>
            <label class="toggle-row">
                <input type="checkbox" id="pin-toggle" ${pinEnabled ? 'checked' : ''}>
                <span>PIN beim Öffnen abfragen</span>
            </label>
            ${pinEnabled ? '<button class="btn btn-secondary" id="btn-pin-change">🔑 PIN ändern</button>' : ''}
        </div>

        <button class="btn btn-secondary" id="btn-sync">🔄 Offline-Queue synchronisieren</button>
        <button class="btn btn-secondary" id="btn-logout">🚪 Abmelden</button>
        <p class="label" style="text-align:center;margin-top:24px;">Baustelle PWA v1.0</p>
    `;
    document.getElementById('btn-sync').onclick = async () => {
        await offline.syncQueue();
        showToast('Sync ausgelöst');
    };
    document.getElementById('btn-logout').onclick = async () => {
        await api.logout();
        await idb.del('pin_hash');
        await idb.del('pin_salt');
        router.go('#/login');
    };
    // ntfy-Settings
    document.getElementById('btn-ntfy-save').onclick = async () => {
        const srv = document.getElementById('ntfy-server').value.trim().replace(/\/$/, '');
        const topic = document.getElementById('ntfy-topic').value.trim();
        await idb.set('ntfy_server', srv);
        await idb.set('ntfy_topic', topic);
        if (topic && 'Notification' in window) {
            if (Notification.permission !== 'granted') {
                const perm = await Notification.requestPermission();
                if (perm !== 'granted') {
                    document.getElementById('ntfy-status').textContent = 'Benachrichtigungen abgelehnt — keine Notifications';
                    return;
                }
            }
            startNtfySubscription(srv, topic);
            document.getElementById('ntfy-status').textContent = '✓ Abonniert: ' + topic;
            showToast('✓ Benachrichtigungen aktiviert');
        } else {
            stopNtfySubscription();
            document.getElementById('ntfy-status').textContent = 'Kein Topic gesetzt';
        }
    };
    document.getElementById('btn-ntfy-test').onclick = async () => {
        const srv = document.getElementById('ntfy-server').value.trim().replace(/\/$/, '');
        const topic = document.getElementById('ntfy-topic').value.trim();
        if (!srv || !topic) { showToast('Server + Topic eingeben', 'error'); return; }
        try {
            await fetch(srv + '/' + topic, {
                method: 'POST',
                headers: { 'Title': 'Baustelle', 'Tags': 'construction_worker' },
                body: 'Test-Nachricht ' + new Date().toLocaleTimeString('de-DE'),
            });
            showToast('✓ Gesendet');
        } catch (e) { showToast('Fehler: ' + e.message, 'error'); }
    };

    document.getElementById('pin-toggle').addEventListener('change', async (e) => {
        if (e.target.checked) {
            // PIN setzen
            const pin = await promptNewPin();
            if (!pin) { e.target.checked = false; return; }
            const { hash, salt } = await hashPin(pin);
            await idb.set('pin_salt', salt);
            await idb.set('pin_hash', hash);
            showToast('✓ PIN gesetzt');
            router.navigate();
        } else {
            if (!confirm('PIN-Schutz wirklich deaktivieren?')) {
                e.target.checked = true;
                return;
            }
            await idb.del('pin_hash');
            await idb.del('pin_salt');
            showToast('PIN-Schutz aus');
            router.navigate();
        }
    });
    const changeBtn = document.getElementById('btn-pin-change');
    if (changeBtn) changeBtn.onclick = async () => {
        const old = await promptPin('Aktuelle PIN eingeben');
        if (!old) return;
        if (!(await verifyPin(old))) { showToast('Falsche PIN', 'error'); return; }
        const neu = await promptNewPin();
        if (!neu) return;
        const { hash, salt } = await hashPin(neu);
        await idb.set('pin_salt', salt);
        await idb.set('pin_hash', hash);
        showToast('✓ PIN geändert');
    };
});

/* Bottom nav + Hilfe-Button */
document.addEventListener('DOMContentLoaded', () => {
    document.querySelectorAll('#bottom-nav button').forEach(b => {
        b.addEventListener('click', () => router.go('#/' + b.dataset.route));
    });
    const helpBtn = document.getElementById('help-btn');
    if (helpBtn) helpBtn.addEventListener('click', openHelpModal);
});

/**
 * Bindet Tap + Long-Press-Drag an alle .report-page-thumb des Bericht-Details.
 */
function bindReportPageInteractions(reportId) {
    const grid = document.getElementById('report-pages');
    if (!grid) return;
    const thumbs = Array.from(grid.querySelectorAll('.report-page-thumb'));

    let longPressTimer = null;
    let dragging = null;
    let touchStart = null;

    thumbs.forEach(t => {
        // Click/Tap → Aktion-Modal (nur wenn nicht gedraggt wurde)
        t.addEventListener('click', (e) => {
            if (dragging) { e.preventDefault(); return; }
            openPageActionsModal(reportId, t.dataset.pageId, t.dataset.relpath, t.dataset.note || '', t.dataset.title || '');
        });

        // Long-Press → Drag-Modus
        const startLongPress = (e) => {
            touchStart = e.touches ? { x: e.touches[0].clientX, y: e.touches[0].clientY } : null;
            longPressTimer = setTimeout(() => {
                dragging = t;
                t.classList.add('dragging');
                showToast('Seite verschieben — ziehen und loslassen');
                if (navigator.vibrate) navigator.vibrate(50);
            }, 500);
        };
        const cancelLongPress = () => {
            if (longPressTimer) { clearTimeout(longPressTimer); longPressTimer = null; }
        };

        t.addEventListener('touchstart', startLongPress, { passive: true });
        t.addEventListener('touchmove', (e) => {
            if (!dragging && touchStart) {
                const dx = e.touches[0].clientX - touchStart.x;
                const dy = e.touches[0].clientY - touchStart.y;
                if (Math.abs(dx) > 8 || Math.abs(dy) > 8) cancelLongPress();
            }
            if (dragging) {
                e.preventDefault();
                // Welcher Thumb liegt unter dem Finger?
                const tx = e.touches[0].clientX;
                const ty = e.touches[0].clientY;
                const below = document.elementFromPoint(tx, ty);
                const target = below ? below.closest('.report-page-thumb') : null;
                if (target && target !== dragging) {
                    const rect = target.getBoundingClientRect();
                    const middle = rect.left + rect.width / 2;
                    if (tx < middle) grid.insertBefore(dragging, target);
                    else grid.insertBefore(dragging, target.nextSibling);
                }
            }
        }, { passive: false });
        t.addEventListener('touchend', async () => {
            cancelLongPress();
            if (dragging) {
                dragging.classList.remove('dragging');
                const ids = Array.from(grid.querySelectorAll('.report-page-thumb')).map(x => x.dataset.pageId);
                try {
                    await api.reorderPages(ids);
                    showToast('✓ Reihenfolge gespeichert');
                    // Page-Nummer-Badges neu setzen
                    Array.from(grid.querySelectorAll('.report-page-thumb')).forEach((el, i) => {
                        const num = el.querySelector('.page-num');
                        if (num) num.textContent = (i + 1);
                    });
                } catch (e) { showToast('Fehler: ' + e.message, 'error'); }
                dragging = null;
            }
            touchStart = null;
        });
        t.addEventListener('touchcancel', () => { cancelLongPress(); dragging = null; touchStart = null; });
    });
}

/* ============================================================
 * MATERIALLISTE MODAL
 * ============================================================ */
async function openMaterialModal(elementType, elementId) {
    const modal = document.createElement('div');
    modal.className = 'fullscreen-modal';
    modal.innerHTML = `
        <div class="fs-header">
            <button class="icon-btn" id="mt-close">✕</button>
            <div class="fs-title">📦 Materialliste</div>
            <span></span>
        </div>
        <div class="fs-body" style="flex-direction:column;gap:12px;padding:16px;align-items:stretch;overflow-y:auto;">
            <div class="detail-section" style="margin:0;">
                <h3>Neues Material</h3>
                <input type="text" id="mt-label" placeholder="Artikel / Bezeichnung" style="width:100%;padding:12px;background:#2a2a30;color:#fff;border:1px solid #444;border-radius:6px;box-sizing:border-box;margin-bottom:6px;">
                <div style="display:flex;gap:8px;">
                    <input type="number" step="0.01" id="mt-qty" value="1" style="flex:1;padding:12px;background:#2a2a30;color:#fff;border:1px solid #444;border-radius:6px;">
                    <select id="mt-unit" style="flex:1;padding:12px;background:#2a2a30;color:#fff;border:1px solid #444;border-radius:6px;">
                        <option>Stk</option><option>m</option><option>m²</option><option>kg</option>
                        <option>l</option><option>Set</option><option>Pa</option><option>h</option>
                    </select>
                </div>
                <input type="text" id="mt-note" placeholder="Notiz (optional)" style="width:100%;padding:12px;background:#2a2a30;color:#fff;border:1px solid #444;border-radius:6px;box-sizing:border-box;margin-top:6px;">
                <button class="btn" id="mt-add" style="margin-top:8px;">+ Hinzufügen</button>
            </div>
            <div class="detail-section" style="margin:0;">
                <h3>Erfasst</h3>
                <div id="mt-list"><div class="loader">Lade…</div></div>
            </div>
        </div>
    `;
    document.body.appendChild(modal);
    pushModal(modal);

    modal.querySelector('#mt-close').onclick = () => closeModal(modal);

    async function reload() {
        try {
            const d = await api.listMaterials(elementType, elementId);
            const listEl = modal.querySelector('#mt-list');
            if (!d.materials.length) {
                listEl.innerHTML = '<div class="opacitymedium">Noch keine Einträge</div>';
                return;
            }
            listEl.innerHTML = d.materials.map(m => `
                <div class="mini-card" data-id="${m.id}" style="display:flex;align-items:center;gap:8px;">
                    <div style="flex:1;">
                        <div class="mini-ref">${escapeHtml(m.label)}</div>
                        <div class="mini-meta">${m.qty} ${escapeHtml(m.unit)}${m.note ? ' · ' + escapeHtml(m.note) : ''}</div>
                    </div>
                    <button class="mt-del" title="Löschen" style="background:rgba(217,83,79,0.2);color:#d9534f;border:none;border-radius:6px;padding:8px 12px;cursor:pointer;">🗑️</button>
                </div>
            `).join('');
            listEl.querySelectorAll('.mt-del').forEach(btn => {
                btn.addEventListener('click', async (e) => {
                    const card = e.target.closest('.mini-card');
                    const id = card.dataset.id;
                    if (!confirm('Eintrag löschen?')) return;
                    await api.deleteMaterial(id);
                    reload();
                });
            });
        } catch (e) {
            modal.querySelector('#mt-list').innerHTML = '<div class="opacitymedium">Fehler: ' + escapeHtml(e.message) + '</div>';
        }
    }
    reload();

    modal.querySelector('#mt-add').onclick = async () => {
        const label = modal.querySelector('#mt-label').value.trim();
        if (!label) { showToast('Bezeichnung eingeben', 'error'); return; }
        const qty = parseFloat(modal.querySelector('#mt-qty').value) || 1;
        const unit = modal.querySelector('#mt-unit').value;
        const note = modal.querySelector('#mt-note').value.trim();
        try {
            await api.addMaterial(elementType, elementId, { label, qty, unit, note });
            modal.querySelector('#mt-label').value = '';
            modal.querySelector('#mt-qty').value = '1';
            modal.querySelector('#mt-note').value = '';
            showToast('✓ Hinzugefügt');
            reload();
        } catch (e) { showToast('Fehler: ' + e.message, 'error'); }
    };
}

/* ============================================================
 * NEW REPORT MODAL (Schnell-Bericht mit Meta + Vorlage + ODT)
 * ============================================================ */
async function openNewReportModal(orderId) {
    // Templates parallel laden
    let tpls = [], odts = [];
    try { tpls = (await api.listTemplates()).templates || []; } catch (e) {}
    try { odts = (await api.listOdtTemplates()).templates || []; } catch (e) {}

    const modal = document.createElement('div');
    modal.className = 'fullscreen-modal';
    modal.innerHTML = `
        <div class="fs-header">
            <button class="icon-btn" id="nr-close">✕</button>
            <div class="fs-title">📑 Neuer Bericht</div>
            <button class="icon-btn" id="nr-save" title="Anlegen">✓</button>
        </div>
        <div class="fs-body" style="flex-direction:column;gap:12px;padding:16px;align-items:stretch;">
            <label class="label">Titel</label>
            <input type="text" id="nr-titel" placeholder="z. B. Wallbox-Installation" style="padding:12px;background:#2a2a30;color:#fff;border:1px solid #444;border-radius:6px;">

            ${tpls.length ? `
            <label class="label">Aus Vorlage erstellen (optional)</label>
            <select id="nr-template" style="padding:12px;background:#2a2a30;color:#fff;border:1px solid #444;border-radius:6px;">
                <option value="0">— Leerer Bericht —</option>
                ${tpls.map(t => `<option value="${t.id}">📋 ${escapeHtml(t.label)} (${t.page_count} Seiten)</option>`).join('')}
            </select>` : ''}

            <label class="label">Format</label>
            <div style="display:flex;gap:8px;">
                <select id="nr-format" style="flex:1;padding:12px;background:#2a2a30;color:#fff;border:1px solid #444;border-radius:6px;">
                    <option value="A4">A4</option>
                    <option value="A3">A3</option>
                    <option value="A5">A5</option>
                    <option value="Letter">Letter</option>
                </select>
                <select id="nr-orient" style="flex:1;padding:12px;background:#2a2a30;color:#fff;border:1px solid #444;border-radius:6px;">
                    <option value="P">Hochformat</option>
                    <option value="L">Querformat</option>
                </select>
            </div>

            ${odts.length ? `
            <label class="label">Deckblatt-Vorlage (ODT)</label>
            <select id="nr-odt" style="padding:12px;background:#2a2a30;color:#fff;border:1px solid #444;border-radius:6px;">
                <option value="">— Kein Deckblatt —</option>
                ${odts.map(o => `<option value="${escapeHtml(o.filename)}">${escapeHtml(o.label)}</option>`).join('')}
            </select>` : ''}
        </div>
    `;
    document.body.appendChild(modal);
    pushModal(modal);

    // ODT-Default vorauswählen
    try {
        const odtData = await api.listOdtTemplates();
        if (odtData.default) {
            const sel = modal.querySelector('#nr-odt');
            if (sel) sel.value = odtData.default;
        }
    } catch (e) {}

    modal.querySelector('#nr-close').onclick = () => closeModal(modal);
    modal.querySelector('#nr-save').onclick = async () => {
        const titel = modal.querySelector('#nr-titel').value.trim();
        const tplSel = modal.querySelector('#nr-template');
        const tpl = tplSel ? parseInt(tplSel.value, 10) : 0;
        const format = modal.querySelector('#nr-format').value;
        const orient = modal.querySelector('#nr-orient').value;
        const odtSel = modal.querySelector('#nr-odt');
        const odt = odtSel ? odtSel.value : '';
        showToast('Lege Bericht an…');
        try {
            const res = await api.createReport({
                element_type: 'order',
                element_id: parseInt(orderId, 10),
                titel: titel,
                template_id: tpl,
                page_format: format,
                page_orientation: orient,
                template_odt: odt,
            });
            showToast('✓ Bericht angelegt');
            closeModal(modal);
            router.go('#/reports/' + res.bericht_id);
        } catch (e) {
            showToast('Fehler: ' + e.message, 'error');
        }
    };
}

/* ============================================================
 * NEUER AUFTRAG MODAL (Schnell-Erfassung vom FAB)
 * ============================================================ */
async function openNewOrderModal() {
    if (!(await ensureAuth())) return;

    const modal = document.createElement('div');
    modal.className = 'fullscreen-modal';
    modal.innerHTML = `
        <div class="fs-header">
            <button class="icon-btn" id="no-close" aria-label="Schliessen">✕</button>
            <div class="fs-title">➕ Neuer Auftrag</div>
            <button class="icon-btn" id="no-save" title="Anlegen & Fotos machen" disabled>✓</button>
        </div>
        <div class="fs-body" style="flex-direction:column;gap:10px;padding:16px;align-items:stretch;">
            <div id="no-step-customer">
                <label class="label">Kunde wählen</label>
                <input type="search" id="no-customer-search" class="new-order-customer-search" placeholder="🔍 Name, Ort…" autocomplete="off">
                <div id="no-customer-list" class="new-order-customer-list"></div>
            </div>

            <div id="no-step-details" hidden>
                <div class="new-order-customer-row">
                    <div style="flex:1">
                        <div class="nc-name" id="no-soc-name"></div>
                        <div class="nc-meta" id="no-soc-meta"></div>
                    </div>
                    <button class="nc-change" id="no-change-customer">Ändern</button>
                </div>
                <div class="new-order-defaults" id="no-defaults"></div>

                <label class="label">Titel / Kurzbeschreibung</label>
                <input type="text" id="no-title" placeholder="z. B. Wallbox-Installation" style="padding:12px;background:#2a2a30;color:#fff;border:1px solid #444;border-radius:6px;">

                <label class="label">Kunden-Referenz (optional)</label>
                <input type="text" id="no-refclient" placeholder="z. B. Angebot Nr. 123" style="padding:12px;background:#2a2a30;color:#fff;border:1px solid #444;border-radius:6px;">
            </div>
        </div>
    `;
    document.body.appendChild(modal);
    pushModal(modal);

    const closeBtn   = modal.querySelector('#no-close');
    const saveBtn    = modal.querySelector('#no-save');
    const searchIn   = modal.querySelector('#no-customer-search');
    const listEl     = modal.querySelector('#no-customer-list');
    const stepCust   = modal.querySelector('#no-step-customer');
    const stepDet    = modal.querySelector('#no-step-details');
    const socName    = modal.querySelector('#no-soc-name');
    const socMeta    = modal.querySelector('#no-soc-meta');
    const defaultsEl = modal.querySelector('#no-defaults');
    const titleIn    = modal.querySelector('#no-title');
    const refIn      = modal.querySelector('#no-refclient');
    const changeBtn  = modal.querySelector('#no-change-customer');

    let selectedCustomer = null;

    closeBtn.onclick = () => closeModal(modal);

    /* ---- Letzte Kunden als Quick-Pick ---- */
    async function renderRecent() {
        const recent = (await idb.get('recent_customers')) || [];
        if (!recent.length) {
            listEl.innerHTML = '<div class="new-order-empty">Tippe zum Suchen…</div>';
            return;
        }
        listEl.innerHTML = '<div style="padding:8px 12px;color:#888;font-size:12px;">Zuletzt verwendet</div>' +
            recent.map(c => `
                <div class="nc-item recent" data-id="${c.id}">
                    <div>${escapeHtml(c.name)}</div>
                    <div class="nc-sub">${escapeHtml((c.zip || '') + ' ' + (c.town || ''))}</div>
                </div>
            `).join('');
    }
    await renderRecent();

    /* ---- Suche mit Debounce ---- */
    let searchTimer = null;
    searchIn.addEventListener('input', () => {
        clearTimeout(searchTimer);
        const q = searchIn.value.trim();
        if (!q) { renderRecent(); return; }
        searchTimer = setTimeout(async () => {
            try {
                const data = await api.listCustomers({ q });
                const items = (data.customers || []).slice(0, 30);
                if (!items.length) {
                    listEl.innerHTML = '<div class="new-order-empty">Keine Treffer</div>';
                    return;
                }
                listEl.innerHTML = items.map(c => `
                    <div class="nc-item" data-id="${c.id}">
                        <div>${escapeHtml(c.name)}</div>
                        <div class="nc-sub">${escapeHtml((c.zip || '') + ' ' + (c.town || ''))}</div>
                    </div>
                `).join('');
            } catch (e) {
                listEl.innerHTML = '<div class="new-order-empty">Fehler: ' + escapeHtml(e.message) + '</div>';
            }
        }, 300);
    });

    /* ---- Kunden-Klick: Details laden, Wechsel zum zweiten Schritt ---- */
    listEl.addEventListener('click', async (e) => {
        const item = e.target.closest('.nc-item');
        if (!item) return;
        const id = parseInt(item.dataset.id, 10);
        if (!id) return;

        showToast('Lade Kundendaten…');
        try {
            const res = await api.getCustomer(id);
            const c = res.customer || res;
            selectedCustomer = c;

            socName.textContent = c.name || '';
            socMeta.textContent = [c.address, ((c.zip || '') + ' ' + (c.town || '')).trim()].filter(Boolean).join(' · ');

            const defs = [];
            if (c.cond_reglement_label) defs.push('💳 ' + c.cond_reglement_label);
            if (c.mode_reglement_label) defs.push('🏦 ' + c.mode_reglement_label);
            if (!defs.length) defs.push('Keine speziellen Defaults hinterlegt');
            defaultsEl.innerHTML = 'Übernommen: ' + escapeHtml(defs.join(' · '));

            stepCust.hidden = true;
            stepDet.hidden = false;
            saveBtn.disabled = false;
            titleIn.focus();
        } catch (err) {
            showToast('Fehler: ' + err.message, 'error');
        }
    });

    changeBtn.onclick = () => {
        selectedCustomer = null;
        stepDet.hidden = true;
        stepCust.hidden = false;
        saveBtn.disabled = true;
        searchIn.focus();
    };

    /* ---- Anlegen ---- */
    saveBtn.onclick = async () => {
        if (!selectedCustomer) { showToast('Bitte zuerst Kunde wählen', 'error'); return; }
        const title = titleIn.value.trim();
        if (!title) { showToast('Titel ist Pflicht', 'error'); titleIn.focus(); return; }

        saveBtn.disabled = true;
        showToast('Lege Auftrag an…');
        try {
            const res = await api.createOrder({
                socid: selectedCustomer.id,
                title: title,
                ref_client: refIn.value.trim(),
            });
            // Recent-Liste in IDB aktualisieren (letzte 5)
            try {
                const recent = (await idb.get('recent_customers')) || [];
                const filtered = recent.filter(c => c.id !== selectedCustomer.id);
                filtered.unshift({
                    id: selectedCustomer.id,
                    name: selectedCustomer.name,
                    zip: selectedCustomer.zip,
                    town: selectedCustomer.town,
                });
                await idb.set('recent_customers', filtered.slice(0, 5));
            } catch (e) {}

            showToast('✓ Auftrag ' + (res.order.ref || '') + ' angelegt');
            closeModal(modal);
            router.go('#/orders/' + res.order.id);
        } catch (e) {
            showToast('Fehler: ' + e.message, 'error');
            saveBtn.disabled = false;
        }
    };
}

/* ============================================================
 * SEITEN-AKTIONEN MODAL (Notiz, Löschen, Vollbild)
 * ============================================================ */
async function openPageActionsModal(berichtId, pageId, relpath, note, title) {
    const url = await api.getPhotoBlobUrl(relpath);
    const modal = document.createElement('div');
    modal.className = 'fullscreen-modal';
    modal.innerHTML = `
        <div class="fs-header">
            <button class="icon-btn" id="pa-close">✕</button>
            <div class="fs-title">Seite bearbeiten</div>
            <button class="icon-btn" id="pa-delete" title="Seite löschen">🗑️</button>
        </div>
        <div class="fs-body" style="flex-direction:column;gap:12px;padding:16px;">
            ${url ? `<img src="${url}" style="max-height:40vh;">` : '<div class="thumb-placeholder">⚠</div>'}
            <label class="label" style="align-self:flex-start;">Titel / Zwischentitel (groß oben auf der Seite):</label>
            <input type="text" id="pa-title" placeholder="z. B. 'Vor Beginn der Arbeiten'" value="${escapeHtml(title || '')}" style="width:100%;padding:10px;background:#2a2a30;color:#fff;border:1px solid #444;border-radius:6px;box-sizing:border-box;">
            <label class="label" style="align-self:flex-start;">Notiz zur Seite (unten auf der Seite):</label>
            <textarea id="pa-note" rows="3" style="width:100%;background:#2a2a30;color:#fff;border:1px solid #444;border-radius:6px;padding:10px;font-size:14px;box-sizing:border-box;">${escapeHtml(note || '')}</textarea>
            <button class="btn" id="pa-save">💾 Speichern</button>
        </div>
    `;
    document.body.appendChild(modal);
    pushModal(modal);

    modal.querySelector('#pa-close').onclick = () => closeModal(modal);
    modal.querySelector('#pa-save').onclick = async () => {
        try {
            const note = modal.querySelector('#pa-note').value;
            const title = modal.querySelector('#pa-title').value;
            await api.request('/pages.php?id=' + pageId, {
                method: 'POST',
                body: JSON.stringify({ note, title }),
            });
            showToast('✓ Gespeichert');
            closeModal(modal);
            router.navigate();
        } catch (e) {
            // Fallback falls api.request nicht exposed ist
            try {
                await api.updatePageNote(pageId, modal.querySelector('#pa-note').value);
                showToast('✓ Notiz gespeichert');
                closeModal(modal);
                router.navigate();
            } catch (er) { showToast('Fehler: ' + er.message, 'error'); }
        }
    };
    modal.querySelector('#pa-delete').onclick = async () => {
        if (!confirm('Diese Seite aus dem Bericht entfernen?')) return;
        try {
            await api.deletePage(pageId);
            showToast('✓ Seite entfernt');
            closeModal(modal);
            router.navigate();
        } catch (e) { showToast('Löschen fehlgeschlagen: ' + e.message, 'error'); }
    };
}

/* ============================================================
 * PDF-VORSCHAU MODAL
 * ============================================================ */
function openPdfModal(blobUrl, filename) {
    const fname = filename || 'bericht.pdf';
    const modal = document.createElement('div');
    modal.className = 'fullscreen-modal';
    modal.innerHTML = `
        <div class="fs-header">
            <button class="icon-btn" id="pdf-close">✕</button>
            <div class="fs-title">📑 PDF-Vorschau</div>
            <button class="icon-btn" id="pdf-share" title="Teilen">📤</button>
            <a class="icon-btn" id="pdf-download" href="${blobUrl}" download="${escapeHtml(fname)}" title="Download">⬇</a>
        </div>
        <div class="fs-body" style="padding:0;">
            <iframe src="${blobUrl}" style="width:100%;height:100%;border:none;background:#444;"></iframe>
        </div>
    `;
    document.body.appendChild(modal);
    pushModal(modal, () => { try { URL.revokeObjectURL(blobUrl); } catch {} });
    modal.querySelector('#pdf-close').onclick = () => closeModal(modal);
    modal.querySelector('#pdf-share').onclick = async () => {
        try {
            const r = await fetch(blobUrl);
            const blob = await r.blob();
            await shareFile(blob, fname, 'application/pdf', fname);
        } catch (e) { showToast('Teilen fehlgeschlagen: ' + e.message, 'error'); }
    };
}

/* ============================================================
 * UNTERSCHRIFT MODAL (Touch-Signatur)
 * ============================================================ */
function openSignatureModal(berichtId) {
    const modal = document.createElement('div');
    modal.className = 'fullscreen-modal signature-modal';
    modal.innerHTML = `
        <div class="fs-header">
            <button class="icon-btn" id="sig-close">✕</button>
            <div class="fs-title">✍️ Kunden-Unterschrift</div>
            <button class="icon-btn" id="sig-save" title="Speichern">✓</button>
        </div>
        <div class="signature-meta">
            <input type="text" id="sig-name" placeholder="Name des Unterzeichners (Pflicht)" autocomplete="name">
            <label class="sig-gps-label">
                <input type="checkbox" id="sig-gps" checked>
                📍 GPS-Position aufnehmen
            </label>
            <div class="sig-legal">Mit der Unterschrift bestätige ich die ordnungsgemäße Ausführung der dokumentierten Arbeiten. Server-Zeitstempel, GPS-Koordinaten und ein SHA-256-Integritäts-Hash werden zusammen mit der Unterschrift gespeichert.</div>
        </div>
        <div class="signature-toolbar">
            <button id="sig-clear">🗑 Leeren</button>
            <span class="sig-hint">Mit dem Finger unterschreiben</span>
        </div>
        <div class="signature-body">
            <canvas id="sig-canvas"></canvas>
        </div>
    `;
    document.body.appendChild(modal);
    pushModal(modal, () => { try { window.removeEventListener('resize', fitCanvas); } catch {} });

    const canvas = modal.querySelector('#sig-canvas');
    const ctx = canvas.getContext('2d');

    function fitCanvas() {
        const body = modal.querySelector('.signature-body');
        const rect = body.getBoundingClientRect();
        canvas.width = Math.max(600, Math.floor(rect.width * 2));
        canvas.height = Math.max(300, Math.floor(rect.height * 2));
        canvas.style.width = rect.width + 'px';
        canvas.style.height = rect.height + 'px';
        ctx.fillStyle = '#fff';
        ctx.fillRect(0, 0, canvas.width, canvas.height);
        ctx.strokeStyle = '#000';
        ctx.lineWidth = 4;
        ctx.lineCap = 'round';
        ctx.lineJoin = 'round';
    }
    fitCanvas();
    window.addEventListener('resize', fitCanvas);

    let drawing = false;
    function pos(e) {
        const r = canvas.getBoundingClientRect();
        const sx = canvas.width / r.width;
        const sy = canvas.height / r.height;
        const t = e.touches ? e.touches[0] : e;
        return { x: (t.clientX - r.left) * sx, y: (t.clientY - r.top) * sy };
    }
    function start(e) { e.preventDefault(); drawing = true; const p = pos(e); ctx.beginPath(); ctx.moveTo(p.x, p.y); }
    function move(e) { if (!drawing) return; e.preventDefault(); const p = pos(e); ctx.lineTo(p.x, p.y); ctx.stroke(); }
    function end() { drawing = false; }
    canvas.addEventListener('mousedown', start);
    canvas.addEventListener('mousemove', move);
    canvas.addEventListener('mouseup', end);
    canvas.addEventListener('mouseleave', end);
    canvas.addEventListener('touchstart', start, { passive: false });
    canvas.addEventListener('touchmove', move, { passive: false });
    canvas.addEventListener('touchend', end);

    modal.querySelector('#sig-clear').onclick = fitCanvas;
    modal.querySelector('#sig-close').onclick = () => closeModal(modal);
    modal.querySelector('#sig-save').onclick = async () => {
        const signer = modal.querySelector('#sig-name').value.trim();
        if (!signer) {
            showToast('Bitte Namen des Unterzeichners eingeben', 'error');
            modal.querySelector('#sig-name').focus();
            return;
        }
        // GPS holen wenn aktiviert
        let gps = null;
        if (modal.querySelector('#sig-gps').checked && 'geolocation' in navigator) {
            showToast('Hole GPS-Position…');
            try {
                const pos = await new Promise((res, rej) => {
                    navigator.geolocation.getCurrentPosition(res, rej, { timeout: 8000, enableHighAccuracy: true });
                });
                gps = { lat: pos.coords.latitude, lon: pos.coords.longitude };
            } catch (e) {
                console.warn('GPS failed', e);
            }
        }
        showToast('Speichere Unterschrift…');
        canvas.toBlob(async (blob) => {
            try {
                const opts = { signer_name: signer };
                if (gps) { opts.gps_lat = gps.lat; opts.gps_lon = gps.lon; }
                await api.uploadSignature(berichtId, blob, opts);
                showToast('✓ Unterschrift hinzugefügt');
                closeModal(modal);
                router.navigate();
            } catch (e) { showToast('Fehler: ' + e.message, 'error'); }
        }, 'image/png');
    };
}

function openHelpModal() {
    const modal = document.createElement('div');
    modal.className = 'fullscreen-modal help-modal';
    modal.innerHTML = `
        <div class="fs-header">
            <button class="icon-btn" id="help-close">✕</button>
            <div class="fs-title">❓ Hilfe / Anleitung</div>
            <span></span>
        </div>
        <div class="help-body">
            <h2>📋 So funktioniert die Baustelle-App</h2>

            <section>
                <h3>1. Aufträge finden</h3>
                <p>Im Reiter <strong>Aufträge</strong> siehst du alle offenen Aufträge, die dir zugewiesen sind.
                Oben kannst du per Suchfeld nach Auftragsnummer oder Kundenname filtern.</p>
                <p>Auf einen Auftrag tippen → Detail-Ansicht mit Kunde, Adresse, Telefon.</p>
            </section>

            <section>
                <h3>2. Fotos aufnehmen</h3>
                <p>Im Auftrag-Detail:</p>
                <ul>
                    <li><strong>📷 Foto aufnehmen</strong> — öffnet direkt die Kamera</li>
                    <li><strong>📂 Aus Galerie wählen</strong> — mehrere Bilder auf einmal möglich</li>
                </ul>
                <p>Die Bilder werden automatisch auf 2000px verkleinert und hochgeladen.
                Sie landen in einem <strong>Entwurf-Bericht</strong>, der automatisch zum Auftrag angelegt wird.</p>
                <p class="tip">💡 Alle weiteren Fotos werden an denselben Entwurf angehängt —
                du hast also einen Bericht mit mehreren Seiten, bis du ihn finalisierst.</p>
            </section>

            <section>
                <h3>3. Fotos bearbeiten (Skizzen)</h3>
                <p>Tippe auf ein hochgeladenes Foto im Grid → <strong>Vollbild-Ansicht</strong>.</p>
                <ul>
                    <li><strong>✏️ (oben)</strong> öffnet den Skizzen-Editor</li>
                    <li><strong>🗑️ (oben)</strong> löscht das Foto</li>
                </ul>
                <p>Im Skizzen-Editor:</p>
                <ul>
                    <li>✏️ Stift (Freihand)</li>
                    <li>↗ Pfeil mit Spitze (von Start bis Ende ziehen)</li>
                    <li>▭ Rechteck</li>
                    <li>○ Ellipse</li>
                    <li>Farbe + Linienstärke rechts daneben</li>
                    <li>↶ Undo / 🗑 Alles zurücksetzen</li>
                </ul>
                <p>Oben rechts <strong>✓</strong> → Skizze wird als eigenständige neue Bericht-Seite gespeichert.
                Das Original-Foto bleibt unverändert.</p>
            </section>

            <section>
                <h3>4. Sprachnotizen</h3>
                <p><strong>🎙 Sprachnotiz aufnehmen</strong> im Auftrag-Detail:</p>
                <ul>
                    <li>Aufnahme starten, reden</li>
                    <li>Stopp → Vorhören</li>
                    <li>Senden → Audio landet im Auftrags-Anhang</li>
                </ul>
                <p>Unter der Foto-Liste erscheint eine eigene Sektion „🎙 Sprachnotizen" mit Play-Button je Eintrag.</p>
            </section>

            <section>
                <h3>5. Berichte finalisieren</h3>
                <p>Im Reiter <strong>Berichte</strong> siehst du alle deine Berichte mit Status.</p>
                <ul>
                    <li><span class="status-draft">Entwurf</span> — kannst du noch erweitern</li>
                    <li><span class="status-final">Final</span> — PDF wurde erzeugt, der Bericht ist eingefroren</li>
                </ul>
                <p>Bericht öffnen → <strong>📑 Bericht finalisieren</strong> → erzeugt das PDF und legt es
                unter „Verknüpfte Dokumente" des Auftrags ab. In Dolibarr siehst du den Bericht dann direkt beim Auftrag.</p>
                <p class="tip">💡 Wenn du nach dem Finalisieren neue Fotos machst, wird automatisch ein
                <strong>neuer</strong> Entwurf angelegt. Der finalisierte bleibt unberührt.</p>
            </section>

            <section>
                <h3>6. Offline arbeiten</h3>
                <p>Die App funktioniert auch ohne Internet:</p>
                <ul>
                    <li>Fotos werden in einer lokalen Warteschlange gespeichert</li>
                    <li>Sobald wieder Empfang da ist, werden sie automatisch hochgeladen</li>
                    <li>Oben rechts siehst du den Status: <span class="status-badge-help">🟢 online</span>,
                        <span class="status-badge-help">🟡 N</span> (N Uploads werden synchronisiert),
                        <span class="status-badge-help">🔴 N</span> (offline, N warten)</li>
                </ul>
            </section>

            <section>
                <h3>7. Auf dem Handy installieren</h3>
                <p>So wird die PWA zur echten App:</p>
                <ul>
                    <li><strong>Android/Chrome:</strong> Menü → „Zum Startbildschirm hinzufügen"</li>
                    <li><strong>iPhone/Safari:</strong> Teilen-Symbol → „Zum Home-Bildschirm"</li>
                </ul>
                <p>Danach startet sie wie eine normale App, ohne Browser-Leiste.</p>
            </section>

            <section>
                <h3>8. Einstellungen</h3>
                <p>Im Reiter <strong>⚙️</strong>:</p>
                <ul>
                    <li>🔄 Offline-Queue manuell synchronisieren</li>
                    <li>🚪 Abmelden</li>
                </ul>
            </section>

            <div class="help-footer">
                <p>Baustelle PWA v1.0 · Fragen? → Eddy</p>
            </div>
        </div>
    `;
    document.body.appendChild(modal);
    pushModal(modal);
    modal.querySelector('#help-close').onclick = () => closeModal(modal);
}

function escapeHtml(s) {
    return String(s ?? '').replace(/[&<>"']/g, c => ({'&':'&amp;','<':'&lt;','>':'&gt;','"':'&quot;',"'":'&#39;'}[c]));
}

function docIconFor(filename, mime) {
    const ext = (filename || '').split('.').pop().toLowerCase();
    if ((mime || '').includes('pdf') || ext === 'pdf') return '📕';
    if (['doc','docx','odt','rtf'].includes(ext)) return '📝';
    if (['xls','xlsx','ods','csv'].includes(ext)) return '📊';
    if (['ppt','pptx','odp'].includes(ext)) return '📽';
    if (['zip','rar','7z','tar','gz'].includes(ext)) return '🗜';
    if (['txt','log','md'].includes(ext)) return '📃';
    return '📄';
}

function formatFileSize(bytes) {
    const n = Number(bytes) || 0;
    if (n < 1024) return n + ' B';
    if (n < 1024 * 1024) return (n / 1024).toFixed(0) + ' KB';
    return (n / 1024 / 1024).toFixed(1) + ' MB';
}

function formatShortDate(ts) {
    const d = new Date(Number(ts) * 1000);
    if (isNaN(d.getTime())) return '';
    return d.toLocaleDateString('de-DE', { day: '2-digit', month: '2-digit', year: '2-digit' });
}

function openFileViewer({ url, blob, mime }, filename, relpath) {
    const isImage = (mime || '').startsWith('image/');
    const isPdf = (mime || '').includes('pdf') || /\.pdf$/i.test(filename);

    console.log('[FILE] openFileViewer:', {filename, mime, isPdf, pdfjs: typeof pdfjs, blobSize: blob.size});

    if (isPdf && typeof pdfjs !== 'undefined') {
        console.log('[FILE] → PDF-Viewer aufrufen');
        openPdfViewer(blob, filename, relpath);
        return;
    }

    if (isPdf && typeof pdfjs === 'undefined') {
        console.warn('[FILE] PDF.js ist NICHT geladen!');
        showToast('⚠️ PDF.js nicht verfügbar, Download stattdessen', 'error');
    }

    if (!isImage) {
        // Alles außer Bildern + PDFs: Download
        console.log('[FILE] → Download-Fallback');
        const a = document.createElement('a');
        a.href = url;
        a.download = filename || 'download';
        document.body.appendChild(a);
        a.click();
        a.remove();
        setTimeout(() => URL.revokeObjectURL(url), 10000);
        showToast('⬇ ' + escapeHtml(filename || 'Datei') + ' wird heruntergeladen');
        return;
    }

    const modal = document.createElement('div');
    modal.className = 'fullscreen-modal doc-viewer-modal';
    modal.innerHTML = `
        <div class="fs-header">
            <button class="icon-btn" id="dv-close">✕</button>
            <div class="fs-title">${escapeHtml(filename || '')}</div>
            <button class="icon-btn" id="dv-share" title="Teilen">📤</button>
        </div>
        <div class="dv-body">
            <img src="${url}" style="max-width:100%;max-height:100%;object-fit:contain;">
        </div>
    `;
    document.body.appendChild(modal);
    pushModal(modal, () => { try { URL.revokeObjectURL(url); } catch {} });
    modal.querySelector('#dv-close').onclick = () => closeModal(modal);
    modal.querySelector('#dv-share').onclick = () => {
        shareFile(blob, filename || 'datei', mime || blob.type, filename);
    };
}

async function openPdfViewer(blob, filename, relpath) {
    console.log('[PDF] Opening:', filename, 'size:', blob.size, 'type:', blob.type);

    if (blob.size === 0) {
        showToast('❌ PDF-Datei ist leer oder nicht gefunden', 'error');
        return;
    }

    const modal = document.createElement('div');
    modal.className = 'fullscreen-modal pdf-viewer-modal';
    modal.innerHTML = `
        <div class="fs-header">
            <button class="icon-btn" id="pdf-prev" title="← Seite zurück">‹</button>
            <div class="pdf-page-info" id="pdf-page-info">⏳</div>
            <button class="icon-btn" id="pdf-next" title="Seite vor →">›</button>
            <div class="fs-title">${escapeHtml(filename || '')}</div>
            <button class="icon-btn" id="pdf-close">✕</button>
            <button class="icon-btn" id="pdf-share" title="Teilen">📤</button>
            <button class="icon-btn" id="pdf-download" title="Download">⬇</button>
        </div>
        <div class="pdf-body" id="pdf-body">
            <canvas id="pdf-canvas"></canvas>
        </div>
    `;
    document.body.appendChild(modal);
    pushModal(modal);

    const canvas = modal.querySelector('#pdf-canvas');
    const ctx = canvas.getContext('2d');
    const pageInfo = modal.querySelector('#pdf-page-info');
    let pdf, currentPage = 1;

    try {
        const arrayBuffer = await blob.arrayBuffer();
        console.log('[PDF] ArrayBuffer size:', arrayBuffer.byteLength);

        if (arrayBuffer.byteLength === 0) {
            throw new Error('PDF-Datei ist leer');
        }

        pdf = await pdfjs.getDocument(new Uint8Array(arrayBuffer)).promise;
        console.log('[PDF] Loaded:', pdf.numPages, 'pages');
        pageInfo.textContent = `1 / ${pdf.numPages}`;

        async function renderPage(num) {
            if (num < 1 || num > pdf.numPages) return;
            currentPage = num;
            try {
                const page = await pdf.getPage(num);
                const viewport = page.getViewport({ scale: window.devicePixelRatio });
                canvas.width = viewport.width;
                canvas.height = viewport.height;
                await page.render({ canvasContext: ctx, viewport }).promise;
                pageInfo.textContent = `${num} / ${pdf.numPages}`;
            } catch (e) {
                console.error('[PDF] Render error on page', num, e);
                pageInfo.textContent = `❌ Seite ${num} Fehler`;
            }
        }

        await renderPage(1);
        modal.querySelector('#pdf-prev').onclick = () => renderPage(currentPage - 1);
        modal.querySelector('#pdf-next').onclick = () => renderPage(currentPage + 1);
        modal.querySelector('#pdf-download').onclick = async () => {
            const t = await api.getToken();
            const params = new URLSearchParams({ relpath, jwt: t, download: 1 });
            window.location.href = window.location.origin + '/custom/bericht/api/photo.php?' + params.toString();
        };
        modal.querySelector('#pdf-share').onclick = () => {
            shareFile(blob, filename || 'dokument.pdf', 'application/pdf', filename);
        };
        modal.querySelector('#pdf-prev').disabled = false;
        modal.querySelector('#pdf-next').disabled = pdf.numPages === 1;
    } catch (err) {
        pageInfo.textContent = '❌ ' + (err.message || 'PDF-Fehler');
        console.error('[PDF] Load error:', err);
        showToast('PDF-Fehler: ' + err.message, 'error');
    }

    modal.querySelector('#pdf-close').onclick = () => {
        closeModal(modal);
    };
}

/* ============================================================
 * PHOTO VOLLBILD MODAL MIT ZOOM + SWIPE + SKIZZEN-EDITOR
 * ============================================================ */
async function openPhotoModal(orderId, relpath) {
    // Alle Bilder im Grid sammeln für Navigation
    const allThumbs = Array.from(document.querySelectorAll('#photo-grid .thumb[data-relpath]'));
    const allRelpaths = allThumbs.map(t => t.dataset.relpath);
    let currentIndex = allRelpaths.indexOf(relpath);
    if (currentIndex < 0) currentIndex = 0;

    // Zoom/Pan State
    let zoom = 1, panX = 0, panY = 0;
    let currentUrl = null;
    const touchState = { startX: 0, startY: 0, startDist: 0, startZoom: 1, startPanX: 0, startPanY: 0, isDragging: false, isPinching: false, lastTap: 0 };

    const modal = document.createElement('div');
    modal.className = 'fullscreen-modal photo-viewer-modal';
    modal.innerHTML = `
        <div class="fs-header">
            <button class="icon-btn" id="fs-close">✕</button>
            <div class="fs-title" id="pv-title"></div>
            <div class="pv-counter" id="pv-counter"></div>
            <button class="icon-btn" id="fs-share" title="Teilen">📤</button>
            <button class="icon-btn" id="fs-sketch" title="Zeichnen">✏️</button>
            <button class="icon-btn" id="fs-delete" title="Löschen">🗑️</button>
        </div>
        <div class="pv-body" id="pv-body">
            <img id="pv-image" src="" draggable="false">
        </div>
        <button class="pv-nav pv-prev" id="pv-prev">‹</button>
        <button class="pv-nav pv-next" id="pv-next">›</button>
        <div class="pv-zoom-btns">
            <button id="pv-zout">−</button>
            <button id="pv-zreset">⟳</button>
            <button id="pv-zin">+</button>
        </div>
    `;
    document.body.appendChild(modal);
    pushModal(modal, () => { try { document.removeEventListener('keydown', keyHandler); } catch {} });

    const img = modal.querySelector('#pv-image');
    const body = modal.querySelector('#pv-body');
    const titleEl = modal.querySelector('#pv-title');
    const counter = modal.querySelector('#pv-counter');
    const prevBtn = modal.querySelector('#pv-prev');
    const nextBtn = modal.querySelector('#pv-next');

    function resetZoom() { zoom = 1; panX = 0; panY = 0; applyTransform(); }
    function applyTransform() { img.style.transform = `translate(${panX}px, ${panY}px) scale(${zoom})`; }
    function setZoom(z) {
        zoom = Math.max(0.5, Math.min(5, z));
        constrainPan();
        applyTransform();
    }
    function constrainPan() {
        if (zoom <= 1) { panX = 0; panY = 0; return; }
        const rect = body.getBoundingClientRect();
        const maxX = Math.max(0, (img.naturalWidth * zoom - rect.width) / 2);
        const maxY = Math.max(0, (img.naturalHeight * zoom - rect.height) / 2);
        panX = Math.max(-maxX, Math.min(maxX, panX));
        panY = Math.max(-maxY, Math.min(maxY, panY));
    }

    async function loadImage(idx) {
        if (idx < 0 || idx >= allRelpaths.length) return;
        currentIndex = idx;
        const rp = allRelpaths[idx];
        titleEl.textContent = rp.split('/').pop();
        counter.textContent = `${idx + 1} / ${allRelpaths.length}`;
        prevBtn.disabled = idx === 0;
        nextBtn.disabled = idx === allRelpaths.length - 1;
        prevBtn.style.display = nextBtn.style.display = allRelpaths.length > 1 ? '' : 'none';

        img.style.opacity = '0.3';
        const url = await api.getPhotoBlobUrl(rp);
        if (url) {
            currentUrl = url;
            img.src = url;
            img.onload = () => { img.style.opacity = '1'; };
        }
        resetZoom();
    }

    function close() { closeModal(modal); }
    function goPrev() { if (currentIndex > 0) loadImage(currentIndex - 1); }
    function goNext() { if (currentIndex < allRelpaths.length - 1) loadImage(currentIndex + 1); }

    // Events
    modal.querySelector('#fs-close').onclick = close;
    prevBtn.onclick = (e) => { e.stopPropagation(); goPrev(); };
    nextBtn.onclick = (e) => { e.stopPropagation(); goNext(); };
    modal.querySelector('#pv-zin').onclick = () => setZoom(zoom + 0.5);
    modal.querySelector('#pv-zout').onclick = () => setZoom(zoom - 0.5);
    modal.querySelector('#pv-zreset').onclick = resetZoom;

    modal.querySelector('#fs-delete').onclick = async () => {
        if (!confirm('Foto wirklich löschen?')) return;
        try {
            await api.deletePhoto(allRelpaths[currentIndex]);
            showToast('✓ Gelöscht');
            close();
            router.navigate();
        } catch (e) { showToast('Löschen fehlgeschlagen: ' + e.message, 'error'); }
    };
    modal.querySelector('#fs-sketch').onclick = () => {
        close();
        openSketchEditor(orderId, currentUrl, allRelpaths[currentIndex]);
    };
    modal.querySelector('#fs-share').onclick = async () => {
        const rp = allRelpaths[currentIndex];
        showToast('Lade Foto…');
        try {
            const f = await api.getFileBlobUrl(rp);
            if (!f) { showToast('Foto konnte nicht geladen werden', 'error'); return; }
            await shareFile(f.blob, rp.split('/').pop(), f.mime, 'Foto vom Auftrag');
        } catch (e) { showToast('Fehler: ' + e.message, 'error'); }
    };

    // Doppelklick = Zoom Toggle
    img.addEventListener('dblclick', (e) => {
        e.preventDefault();
        if (zoom > 1) resetZoom(); else setZoom(2.5);
    });

    // Touch: Pinch-to-Zoom + Swipe + Pan
    body.addEventListener('touchstart', (e) => {
        if (e.touches.length === 1) {
            const t = e.touches[0];
            touchState.startX = t.clientX;
            touchState.startY = t.clientY;
            touchState.startPanX = panX;
            touchState.startPanY = panY;
            touchState.isDragging = true;
            touchState.isPinching = false;
            const now = Date.now();
            if (now - touchState.lastTap < 300) {
                if (zoom > 1) resetZoom(); else setZoom(2.5);
                touchState.lastTap = 0;
            } else {
                touchState.lastTap = now;
            }
        } else if (e.touches.length === 2) {
            e.preventDefault();
            touchState.isPinching = true;
            touchState.isDragging = false;
            touchState.startDist = Math.hypot(e.touches[0].clientX - e.touches[1].clientX, e.touches[0].clientY - e.touches[1].clientY);
            touchState.startZoom = zoom;
        }
    }, { passive: false });

    body.addEventListener('touchmove', (e) => {
        if (touchState.isPinching && e.touches.length === 2) {
            e.preventDefault();
            const dist = Math.hypot(e.touches[0].clientX - e.touches[1].clientX, e.touches[0].clientY - e.touches[1].clientY);
            setZoom(touchState.startZoom * (dist / touchState.startDist));
        } else if (touchState.isDragging && e.touches.length === 1) {
            const t = e.touches[0];
            const dx = t.clientX - touchState.startX;
            const dy = t.clientY - touchState.startY;
            if (zoom > 1) {
                e.preventDefault();
                panX = touchState.startPanX + dx;
                panY = touchState.startPanY + dy;
                constrainPan();
                applyTransform();
            }
        }
    }, { passive: false });

    body.addEventListener('touchend', (e) => {
        if (touchState.isDragging && zoom <= 1 && e.changedTouches.length > 0) {
            const t = e.changedTouches[0];
            const dx = t.clientX - touchState.startX;
            if (Math.abs(dx) > 50) {
                if (dx > 0) goPrev(); else goNext();
            }
        }
        touchState.isDragging = false;
        touchState.isPinching = false;
    });

    // Tastatur
    const keyHandler = (e) => {
        if (e.key === 'Escape') close();
        if (e.key === 'ArrowLeft') goPrev();
        if (e.key === 'ArrowRight') goNext();
    };
    document.addEventListener('keydown', keyHandler);

    // Erstes Bild laden
    await loadImage(currentIndex);
}

async function openVoiceModal(orderId) {
    const modal = document.createElement('div');
    modal.className = 'fullscreen-modal voice-modal';
    modal.innerHTML = `
        <div class="fs-header">
            <button class="icon-btn" id="v-close">✕</button>
            <div class="fs-title">🎙 Sprachnotiz</div>
            <span></span>
        </div>
        <div class="voice-body">
            <div class="voice-indicator" id="v-indicator">●</div>
            <div class="voice-time" id="v-time">00:00</div>
            <button class="btn btn-large" id="v-start">Aufnahme starten</button>
            <button class="btn btn-secondary" id="v-stop" style="display:none">Stopp</button>
            <button class="btn" id="v-send" style="display:none">Senden</button>
            <audio id="v-preview" controls style="display:none;width:100%;margin-top:12px;"></audio>
        </div>
    `;
    document.body.appendChild(modal);

    let mediaRecorder = null;
    let chunks = [];
    let timer = null;
    let startTime = 0;
    let audioBlob = null;

    pushModal(modal, () => {
        try { if (mediaRecorder && mediaRecorder.state === 'recording') mediaRecorder.stop(); } catch {}
        try { if (timer) clearInterval(timer); } catch {}
    });

    const startBtn = modal.querySelector('#v-start');
    const stopBtn  = modal.querySelector('#v-stop');
    const sendBtn  = modal.querySelector('#v-send');
    const indicator = modal.querySelector('#v-indicator');
    const timeEl = modal.querySelector('#v-time');
    const preview = modal.querySelector('#v-preview');

    modal.querySelector('#v-close').onclick = () => closeModal(modal);

    startBtn.onclick = async () => {
        try {
            const stream = await navigator.mediaDevices.getUserMedia({ audio: true });
            chunks = [];
            mediaRecorder = new MediaRecorder(stream);
            mediaRecorder.ondataavailable = e => chunks.push(e.data);
            mediaRecorder.onstop = () => {
                stream.getTracks().forEach(t => t.stop());
                audioBlob = new Blob(chunks, { type: mediaRecorder.mimeType || 'audio/webm' });
                preview.src = URL.createObjectURL(audioBlob);
                preview.style.display = '';
                sendBtn.style.display = '';
                indicator.classList.remove('recording');
            };
            mediaRecorder.start();
            startTime = Date.now();
            indicator.classList.add('recording');
            startBtn.style.display = 'none';
            stopBtn.style.display = '';
            timer = setInterval(() => {
                const s = Math.floor((Date.now() - startTime) / 1000);
                timeEl.textContent = String(Math.floor(s / 60)).padStart(2, '0') + ':' + String(s % 60).padStart(2, '0');
            }, 500);
        } catch (e) {
            showToast('Mikrofon-Zugriff verweigert', 'error');
        }
    };

    stopBtn.onclick = () => {
        if (mediaRecorder && mediaRecorder.state === 'recording') mediaRecorder.stop();
        if (timer) clearInterval(timer);
        stopBtn.style.display = 'none';
    };

    sendBtn.onclick = async () => {
        if (!audioBlob) return;
        sendBtn.disabled = true;
        try {
            await api.uploadVoiceNote(orderId, audioBlob, 'voice_' + Date.now() + '.webm');
            showToast('✓ Sprachnotiz hochgeladen');
            closeModal(modal);
        } catch (e) {
            showToast('Upload fehlgeschlagen: ' + e.message, 'error');
            sendBtn.disabled = false;
        }
    };
}

/* ============================================================
 * SKIZZEN-EDITOR (Touch-fähig, einfache Vektor-Zeichnung)
 * ============================================================ */
async function openSketchEditor(orderId, imageUrl, sourceRelpath) {
    const modal = document.createElement('div');
    modal.className = 'fullscreen-modal sketch-modal';
    modal.innerHTML = `
        <div class="fs-header">
            <button class="icon-btn" id="sk-close">✕</button>
            <div class="fs-title">✏️ Skizze</div>
            <button class="icon-btn" id="sk-save" title="Speichern">✓</button>
        </div>
        <div class="sketch-toolbar">
            <button class="sk-tool active" data-tool="pen" title="Stift">✏️</button>
            <button class="sk-tool" data-tool="arrow" title="Pfeil">↗</button>
            <button class="sk-tool" data-tool="rect" title="Rechteck">▭</button>
            <button class="sk-tool" data-tool="circle" title="Kreis">○</button>
            <span class="sep"></span>
            <button class="sk-tool" data-tool="stamp" data-stamp="⚠" title="Achtung">⚠</button>
            <button class="sk-tool" data-tool="stamp" data-stamp="✓" title="OK">✓</button>
            <button class="sk-tool" data-tool="stamp" data-stamp="✗" title="Mangel">✗</button>
            <button class="sk-tool" data-tool="stamp" data-stamp="🔧" title="Reparatur">🔧</button>
            <span class="sep"></span>
            <button class="sk-tool" data-tool="calibrate" title="Mess-Skala kalibrieren (2 Punkte + Länge)">📏⚙</button>
            <button class="sk-tool" data-tool="measure" title="Messen (nach Kalibrierung)">📏</button>
            <span class="sep"></span>
            <input type="color" id="sk-color" value="#ff0000">
            <input type="range" id="sk-width" min="2" max="20" value="5">
            <span class="sep"></span>
            <button id="sk-undo" title="Rückgängig">↶</button>
            <button id="sk-clear" title="Alles löschen">🗑</button>
        </div>
        <div class="sketch-body">
            <canvas id="sk-canvas"></canvas>
        </div>
    `;
    document.body.appendChild(modal);
    pushModal(modal, () => { try { window.removeEventListener('resize', fitCanvasToScreen); } catch {} });

    const canvas = modal.querySelector('#sk-canvas');
    const ctx = canvas.getContext('2d');

    // Bild laden
    const img = new Image();
    img.crossOrigin = 'anonymous';
    img.src = imageUrl;
    await new Promise(res => { img.onload = res; });

    // Canvas auf Bildgröße (max 1600px)
    const maxSide = 1600;
    const scale = Math.min(1, maxSide / Math.max(img.width, img.height));
    canvas.width = img.width * scale;
    canvas.height = img.height * scale;
    ctx.drawImage(img, 0, 0, canvas.width, canvas.height);

    // Canvas-Display: in den Container einpassen
    function fitCanvasToScreen() {
        const body = modal.querySelector('.sketch-body');
        const rect = body.getBoundingClientRect();
        const s = Math.min(rect.width / canvas.width, rect.height / canvas.height);
        canvas.style.width = (canvas.width * s) + 'px';
        canvas.style.height = (canvas.height * s) + 'px';
    }
    fitCanvasToScreen();
    window.addEventListener('resize', fitCanvasToScreen);

    // State
    let tool = 'pen';
    let stampChar = null;
    let color = '#ff0000';
    let lineWidth = 5;
    let drawing = false;
    let startX = 0, startY = 0;
    const history = [canvas.toDataURL()];
    // Mess-Skala: pixelsPerUnit + unit (z. B. 32.5 px/cm)
    let calibration = null;   // { pxPerUnit: number, unit: 'cm'|'m'|'mm' }
    let calibStep = 0;        // 0 = nicht im Prozess, 1 = warte auf zweiten Punkt

    function pushHistory() {
        history.push(canvas.toDataURL());
        if (history.length > 20) history.shift();
    }
    async function restoreSnapshot(dataUrl) {
        return new Promise(res => {
            const i = new Image();
            i.onload = () => { ctx.clearRect(0, 0, canvas.width, canvas.height); ctx.drawImage(i, 0, 0); res(); };
            i.src = dataUrl;
        });
    }

    modal.querySelectorAll('.sk-tool').forEach(b => {
        b.addEventListener('click', () => {
            modal.querySelectorAll('.sk-tool').forEach(x => x.classList.remove('active'));
            b.classList.add('active');
            tool = b.dataset.tool;
            stampChar = b.dataset.stamp || null;
        });
    });
    modal.querySelector('#sk-color').oninput = e => { color = e.target.value; };
    modal.querySelector('#sk-width').oninput = e => { lineWidth = parseInt(e.target.value, 10); };

    modal.querySelector('#sk-undo').onclick = async () => {
        if (history.length > 1) {
            history.pop();
            await restoreSnapshot(history[history.length - 1]);
        }
    };
    modal.querySelector('#sk-clear').onclick = async () => {
        await restoreSnapshot(history[0]);
        history.length = 1;
    };

    function getPos(e) {
        const rect = canvas.getBoundingClientRect();
        const scaleX = canvas.width / rect.width;
        const scaleY = canvas.height / rect.height;
        const t = e.touches ? e.touches[0] : e;
        return { x: (t.clientX - rect.left) * scaleX, y: (t.clientY - rect.top) * scaleY };
    }

    let snapshotBeforeShape = null;

    function startDraw(e) {
        e.preventDefault();
        const p = getPos(e);
        startX = p.x; startY = p.y;

        // Stamps sind ein Single-Click-Tool (kein Drag)
        if (tool === 'stamp' && stampChar) {
            ctx.fillStyle = color;
            ctx.strokeStyle = '#fff';
            ctx.lineWidth = 4;
            ctx.font = 'bold 96px -apple-system, sans-serif';
            ctx.textAlign = 'center';
            ctx.textBaseline = 'middle';
            ctx.strokeText(stampChar, p.x, p.y);
            ctx.fillText(stampChar, p.x, p.y);
            pushHistory();
            return;
        }

        // Calibrate: Drag-Line zwischen zwei Punkten, dann Länge eingeben
        if (tool === 'calibrate' || tool === 'measure') {
            drawing = true;
            snapshotBeforeShape = canvas.toDataURL();
            ctx.strokeStyle = (tool === 'calibrate') ? '#f0ad4e' : '#5cb85c';
            ctx.fillStyle   = ctx.strokeStyle;
            ctx.lineWidth = Math.max(3, lineWidth);
            ctx.lineCap = 'round';
            ctx.lineJoin = 'round';
            return;
        }

        drawing = true;
        ctx.strokeStyle = color;
        ctx.fillStyle = color;
        ctx.lineWidth = lineWidth;
        ctx.lineCap = 'round';
        ctx.lineJoin = 'round';
        if (tool === 'pen') {
            ctx.beginPath();
            ctx.moveTo(startX, startY);
        } else {
            snapshotBeforeShape = canvas.toDataURL();
        }
    }

    function moveDraw(e) {
        if (!drawing) return;
        e.preventDefault();
        const p = getPos(e);
        lastMoveX = p.x; lastMoveY = p.y;

        if (tool === 'calibrate' || tool === 'measure') {
            restoreSnapshot(snapshotBeforeShape).then(() => {
                const col = (tool === 'calibrate') ? '#f0ad4e' : '#5cb85c';
                ctx.strokeStyle = col;
                ctx.fillStyle = col;
                ctx.lineWidth = Math.max(3, lineWidth);
                ctx.lineCap = 'round';
                // Mess-Linie
                ctx.beginPath();
                ctx.moveTo(startX, startY);
                ctx.lineTo(p.x, p.y);
                ctx.stroke();
                // End-Punkte als kleine Kreuze
                drawCross(ctx, startX, startY, 10);
                drawCross(ctx, p.x, p.y, 10);
                // Live-Distanz bei measure
                if (tool === 'measure' && calibration) {
                    const dx = p.x - startX, dy = p.y - startY;
                    const dist_px = Math.sqrt(dx * dx + dy * dy);
                    const real = (dist_px / calibration.pxPerUnit);
                    const mid_x = (startX + p.x) / 2;
                    const mid_y = (startY + p.y) / 2 - 15;
                    drawDistanceLabel(ctx, mid_x, mid_y, real, calibration.unit);
                }
            });
            return;
        }

        if (tool === 'pen') {
            ctx.lineTo(p.x, p.y);
            ctx.stroke();
        } else if (snapshotBeforeShape) {
            // Shape-Tools: vor jedem Draw den Snapshot wiederherstellen und neu zeichnen
            restoreSnapshot(snapshotBeforeShape).then(() => {
                ctx.strokeStyle = color;
                ctx.fillStyle = color;
                ctx.lineWidth = lineWidth;
                ctx.lineCap = 'round';
                ctx.lineJoin = 'round';
                if (tool === 'rect') {
                    ctx.strokeRect(startX, startY, p.x - startX, p.y - startY);
                } else if (tool === 'circle') {
                    const rx = Math.abs(p.x - startX) / 2;
                    const ry = Math.abs(p.y - startY) / 2;
                    const cx = (startX + p.x) / 2;
                    const cy = (startY + p.y) / 2;
                    ctx.beginPath();
                    ctx.ellipse(cx, cy, rx, ry, 0, 0, 2 * Math.PI);
                    ctx.stroke();
                } else if (tool === 'arrow') {
                    ctx.beginPath();
                    ctx.moveTo(startX, startY);
                    ctx.lineTo(p.x, p.y);
                    ctx.stroke();
                    // Pfeilspitze
                    const angle = Math.atan2(p.y - startY, p.x - startX);
                    const head = Math.max(12, lineWidth * 3);
                    ctx.beginPath();
                    ctx.moveTo(p.x, p.y);
                    ctx.lineTo(p.x - head * Math.cos(angle - Math.PI / 6), p.y - head * Math.sin(angle - Math.PI / 6));
                    ctx.lineTo(p.x - head * Math.cos(angle + Math.PI / 6), p.y - head * Math.sin(angle + Math.PI / 6));
                    ctx.closePath();
                    ctx.fill();
                }
            });
        }
    }

    async function endDraw(e) {
        if (!drawing) return;
        drawing = false;
        const tool_now = tool;

        if (tool_now === 'calibrate') {
            // Länge vom User abfragen
            const p = e && (e.changedTouches ? { x: e.changedTouches[0].clientX, y: e.changedTouches[0].clientY } : { x: e.clientX, y: e.clientY });
            // fallback: aktuelle endposition haben wir nicht mehr exakt — wir nutzen die letzte gezeichnete position
            const dx_px = lastMoveX - startX, dy_px = lastMoveY - startY;
            const dist_px = Math.sqrt(dx_px * dx_px + dy_px * dy_px);
            if (dist_px < 5) { // zu kurz
                await restoreSnapshot(snapshotBeforeShape);
                snapshotBeforeShape = null;
                showToast('Zu kurz — 2 Punkte mit Abstand wählen', 'error');
                return;
            }
            const input = prompt('Reale Länge dieser Strecke:\nFormat: Zahl + Einheit (z. B. "50 cm", "1.5 m", "250 mm")');
            if (!input) {
                await restoreSnapshot(snapshotBeforeShape);
                snapshotBeforeShape = null;
                return;
            }
            const m = input.match(/^\s*([0-9]+(?:[.,][0-9]+)?)\s*(mm|cm|m)?\s*$/i);
            if (!m) {
                await restoreSnapshot(snapshotBeforeShape);
                snapshotBeforeShape = null;
                alert('Ungültiges Format. Beispiel: 1.5 m');
                return;
            }
            const val = parseFloat(m[1].replace(',', '.'));
            const unit = (m[2] || 'cm').toLowerCase();
            // Umrechnung auf mm intern? Nein: pxPerUnit in der eingegebenen Einheit halten
            calibration = { pxPerUnit: dist_px / val, unit };
            showToast('✓ Kalibriert: ' + val + ' ' + unit + ' = ' + dist_px.toFixed(0) + ' px');
            // Kalibrierungslinie entfernen (zeichnen war nur Helper)
            await restoreSnapshot(snapshotBeforeShape);
            snapshotBeforeShape = null;
            // Automatisch auf Measure-Tool wechseln
            const mt = document.querySelector('.sk-tool[data-tool="measure"]');
            if (mt) mt.click();
            return;
        }

        if (tool_now === 'measure') {
            if (!calibration) {
                await restoreSnapshot(snapshotBeforeShape);
                snapshotBeforeShape = null;
                alert('Zuerst kalibrieren! Tap auf 📏⚙, zwei Punkte mit bekannter Länge wählen.');
                return;
            }
            // Die letzte Preview-Zeichnung ist jetzt schon auf dem Canvas — das ist unser finales Ergebnis
            snapshotBeforeShape = null;
            pushHistory();
            return;
        }

        snapshotBeforeShape = null;
        pushHistory();
    }

    // Track der letzten Move-Position für calibrate-endDraw
    let lastMoveX = 0, lastMoveY = 0;

    function drawCross(ctx, x, y, size) {
        ctx.save();
        ctx.beginPath();
        ctx.moveTo(x - size / 2, y);
        ctx.lineTo(x + size / 2, y);
        ctx.moveTo(x, y - size / 2);
        ctx.lineTo(x, y + size / 2);
        ctx.stroke();
        ctx.restore();
    }

    function drawDistanceLabel(ctx, x, y, value, unit) {
        const text = value.toFixed(2) + ' ' + unit;
        ctx.save();
        ctx.font = 'bold 28px -apple-system, sans-serif';
        const w = ctx.measureText(text).width + 16;
        const h = 36;
        ctx.fillStyle = 'rgba(0,0,0,0.75)';
        ctx.fillRect(x - w / 2, y - h / 2, w, h);
        ctx.fillStyle = '#5cb85c';
        ctx.textAlign = 'center';
        ctx.textBaseline = 'middle';
        ctx.fillText(text, x, y);
        ctx.restore();
    }

    canvas.addEventListener('mousedown', startDraw);
    canvas.addEventListener('mousemove', moveDraw);
    canvas.addEventListener('mouseup', endDraw);
    canvas.addEventListener('mouseleave', endDraw);
    canvas.addEventListener('touchstart', startDraw, { passive: false });
    canvas.addEventListener('touchmove', moveDraw, { passive: false });
    canvas.addEventListener('touchend', endDraw);

    modal.querySelector('#sk-close').onclick = () => closeModal(modal);

    modal.querySelector('#sk-save').onclick = async () => {
        showToast('Speichere Skizze…');
        canvas.toBlob(async (blob) => {
            try {
                await api.uploadAnnotatedPhoto(orderId, blob, 'sketch_' + Date.now() + '.jpg');
                showToast('✓ Skizze gespeichert');
                closeModal(modal);
                router.navigate();
            } catch (e) {
                showToast('Upload fehlgeschlagen: ' + e.message, 'error');
            }
        }, 'image/jpeg', 0.9);
    };
}