Initial portal commit: landing + 9 AI-powered apps

Apps: - dwg-rooms: extract room numbers from DWG/DXF - dwg-counting: count symbols in PDF drawings (OpenCV template matching) - contract-check: review PDF contracts against a checklist (Claude vision + Tesseract OCR fallback) - email-drafter: bullet notes → polished Czech/English business emails - invoice-extractor: PDF/image invoice → structured data → Excel - translator: Czech-first translator across 19 languages with tone control - vv-check: find inconsistent unit prices across VV sheets in one workbook - vv-compare: diff original vs new VV files (changes / added / removed) - feature-request: portal users submit ideas + sample files Infrastructure: - LiteLLM gateway with per-app virtual keys + budgets - Langfuse observability - Geist font, shared theme, cross-subdomain back link + theme sync via cookie/URL - Caddy reverse proxy on *.klas.chat
2026-05-13 15:25:04 +02:00
commit 48cef99257
139 changed files with 20171 additions and 0 deletions
--- a/vv-compare/Dockerfile
+++ b/vv-compare/Dockerfile
@@ -0,0 +1,8 @@
+FROM python:3.12-slim
+WORKDIR /app
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+COPY . .
+RUN mkdir -p /tmp/vv-compare
+EXPOSE 8000
+CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "8000"]
--- a/vv-compare/docker-compose.yml
+++ b/vv-compare/docker-compose.yml
@@ -0,0 +1,18 @@
+services:
+  vv-compare:
+    build: .
+    container_name: vv-compare
+    restart: unless-stopped
+    ports:
+      - "127.0.0.1:3034:8000"
+    networks:
+      - localai
+    volumes:
+      - vv-compare-data:/tmp/vv-compare
+
+volumes:
+  vv-compare-data:
+
+networks:
+  localai:
+    external: true
--- a/vv-compare/main.py
+++ b/vv-compare/main.py
@@ -0,0 +1,90 @@
+"""FastAPI: two Excel VVs (original + new) → comparison report Excel."""
+import logging
+import os
+import uuid
+from pathlib import Path
+
+from fastapi import FastAPI, File, HTTPException, UploadFile
+from fastapi.middleware.cors import CORSMiddleware
+from fastapi.responses import FileResponse
+from fastapi.staticfiles import StaticFiles
+
+from vv_compare import compare, write_compare_report
+
+logging.basicConfig(level=logging.INFO)
+logger = logging.getLogger(__name__)
+
+app = FastAPI(title="VV Compare")
+app.add_middleware(CORSMiddleware, allow_origins=["*"],
+                   allow_methods=["*"], allow_headers=["*"])
+
+WORK_DIR = Path(os.getenv("WORK_DIR", "/tmp/vv-compare"))
+WORK_DIR.mkdir(parents=True, exist_ok=True)
+
+jobs: dict[str, dict] = {}
+
+
+@app.get("/")
+async def root():
+    return FileResponse("static/index.html")
+
+
+@app.post("/api/compare")
+async def do_compare(
+    original: UploadFile = File(...),
+    new: UploadFile = File(...),
+):
+    for f in (original, new):
+        suffix = Path(f.filename or "").suffix.lower()
+        if suffix not in (".xlsx", ".xlsm"):
+            raise HTTPException(400, "Podporované formáty: .xlsx, .xlsm")
+
+    job_id = str(uuid.uuid4())
+    job_dir = WORK_DIR / job_id
+    job_dir.mkdir()
+    orig_path = job_dir / f"original{Path(original.filename).suffix}"
+    new_path = job_dir / f"new{Path(new.filename).suffix}"
+    orig_path.write_bytes(await original.read())
+    new_path.write_bytes(await new.read())
+    logger.info("Job %s: original=%s, new=%s", job_id, original.filename, new.filename)
+
+    try:
+        result = compare(orig_path, new_path)
+    except Exception as exc:
+        logger.exception("Compare failed")
+        raise HTTPException(500, f"Porovnání selhalo: {exc}")
+
+    jobs[job_id] = {
+        "original_filename": original.filename,
+        "new_filename": new.filename,
+        "job_dir": str(job_dir),
+        "result": result,
+    }
+    return {"job_id": job_id, "result": result}
+
+
+@app.get("/api/report/{job_id}")
+async def report(job_id: str):
+    if job_id not in jobs:
+        raise HTTPException(404, "Úloha nenalezena")
+    job = jobs[job_id]
+    out_path = Path(job["job_dir"]) / "report.xlsx"
+    write_compare_report(
+        job["result"],
+        job.get("original_filename") or "puvodni.xlsx",
+        job.get("new_filename") or "novy.xlsx",
+        out_path,
+    )
+    return FileResponse(
+        str(out_path),
+        media_type="application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
+        filename="Porovnani_VV_puvodni_vs_novy.xlsx",
+    )
+
+
+@app.get("/health")
+async def health():
+    return {"status": "ok"}
+
+
+app.mount("/static", StaticFiles(directory="static"), name="static")
--- a/vv-compare/requirements.txt
+++ b/vv-compare/requirements.txt
@@ -0,0 +1,4 @@
+fastapi>=0.115
+uvicorn[standard]>=0.30
+openpyxl>=3.1
+python-multipart>=0.0.9
--- a/vv-compare/static/app.js
+++ b/vv-compare/static/app.js
@@ -0,0 +1,130 @@
+// VV compare frontend
+(() => {
+  const $ = (id) => document.getElementById(id);
+  const sections = {
+    upload: $("s-upload"),
+    processing: $("s-processing"),
+    result: $("s-result"),
+  };
+  const show = (n) => {
+    for (const [k, el] of Object.entries(sections)) el.classList.toggle("hidden", k !== n);
+  };
+
+  let state = { jobId: null, result: null, origFile: null, newFile: null };
+
+  function attachDrop(zoneId, inputId, textId, which) {
+    const zone = $(zoneId);
+    const input = $(inputId);
+    const text = $(textId);
+    zone.addEventListener("click", () => input.click());
+    input.addEventListener("change", (e) => {
+      if (e.target.files[0]) setFile(which, e.target.files[0], zone, text);
+    });
+    ["dragenter", "dragover"].forEach((ev) =>
+      zone.addEventListener(ev, (e) => { e.preventDefault(); zone.classList.add("drag-over"); }));
+    ["dragleave", "drop"].forEach((ev) =>
+      zone.addEventListener(ev, (e) => { e.preventDefault(); zone.classList.remove("drag-over"); }));
+    zone.addEventListener("drop", (e) => {
+      if (e.dataTransfer.files[0]) setFile(which, e.dataTransfer.files[0], zone, text);
+    });
+  }
+
+  function setFile(which, file, zone, textEl) {
+    if (which === "orig") state.origFile = file;
+    else state.newFile = file;
+    zone.classList.add("has-file");
+    const size = file.size > 1024 * 1024
+      ? `${(file.size / 1024 / 1024).toFixed(1)} MB`
+      : `${(file.size / 1024).toFixed(0)} kB`;
+    textEl.innerHTML = `<strong>${escapeHtml(file.name)}</strong><br><span style="color:var(--text-tertiary);font-size:12px">${size}</span>`;
+    updateRunBtn();
+  }
+
+  attachDrop("drop-original", "orig-input", "orig-text", "orig");
+  attachDrop("drop-new", "new-input", "new-text", "new");
+
+  function updateRunBtn() {
+    const btn = $("compare-btn");
+    const hint = $("compare-hint");
+    if (!state.origFile && !state.newFile) {
+      btn.disabled = true; hint.textContent = "Nahrajte oba soubory.";
+    } else if (!state.origFile) {
+      btn.disabled = true; hint.textContent = "Chybí původní VV.";
+    } else if (!state.newFile) {
+      btn.disabled = true; hint.textContent = "Chybí nový VV.";
+    } else {
+      btn.disabled = false; hint.textContent = "Připraveno k porovnání.";
+    }
+  }
+
+  $("compare-btn").addEventListener("click", async () => {
+    if (!state.origFile || !state.newFile) return;
+    show("processing");
+    try {
+      const fd = new FormData();
+      fd.append("original", state.origFile);
+      fd.append("new", state.newFile);
+      const r = await fetch("/api/compare", { method: "POST", body: fd });
+      if (!r.ok) throw new Error((await r.json()).detail || r.statusText);
+      const json = await r.json();
+      state.jobId = json.job_id;
+      state.result = json.result;
+      renderResult();
+      show("result");
+    } catch (err) {
+      alert("Chyba: " + err.message);
+      show("upload");
+    }
+  });
+
+  function renderResult() {
+    const r = state.result;
+    const c = r.changes.length, a = r.added.length, d = r.removed.length;
+    $("cnt-changed").textContent = c;
+    $("cnt-added").textContent = a;
+    $("cnt-removed").textContent = d;
+    $("results-meta").textContent =
+      `Porovnání ${r.per_sheet.length} listů — ${c + a + d} celkových rozdílů.`;
+
+    const psHtml = r.per_sheet.map((ps) => `
+      <tr>
+        <td>${escapeHtml(ps.sheet)}</td>
+        <td>${escapeHtml(ps.hala || "")}</td>
+        <td class="num">${ps.orig_count}</td>
+        <td class="num">${ps.new_count}</td>
+        <td class="num"><span class="pill ${ps.changes ? "changed" : "zero"}">${ps.changes}</span></td>
+        <td class="num"><span class="pill ${ps.added ? "added" : "zero"}">${ps.added}</span></td>
+        <td class="num"><span class="pill ${ps.removed ? "removed" : "zero"}">${ps.removed}</span></td>
+      </tr>`).join("");
+    $("per-sheet").innerHTML = r.per_sheet.length ? `
+      <table>
+        <thead>
+          <tr>
+            <th>List</th><th>Hala</th>
+            <th>Pol. původní</th><th>Pol. nový</th>
+            <th>Změněné</th><th>Přidané</th><th>Odebrané</th>
+          </tr>
+        </thead>
+        <tbody>${psHtml}</tbody>
+      </table>` : `<p style="color:var(--text-tertiary)">Nepodařilo se najít listy VV v žádném ze souborů.</p>`;
+  }
+
+  $("download-btn").addEventListener("click", () => {
+    if (state.jobId) window.location.href = `/api/report/${state.jobId}`;
+  });
+  $("restart-btn").addEventListener("click", () => {
+    state = { jobId: null, result: null, origFile: null, newFile: null };
+    $("orig-input").value = ""; $("new-input").value = "";
+    $("drop-original").classList.remove("has-file");
+    $("drop-new").classList.remove("has-file");
+    $("orig-text").textContent = "Přetáhněte soubor sem nebo klikněte";
+    $("new-text").textContent = "Přetáhněte soubor sem nebo klikněte";
+    updateRunBtn();
+    show("upload");
+  });
+
+  function escapeHtml(s) {
+    return String(s ?? "").replace(/[&<>"']/g, (c) =>
+      ({"&":"&amp;","<":"&lt;",">":"&gt;",'"':"&quot;","'":"&#39;"}[c]));
+  }
+})();
--- a/vv-compare/static/extra.css
+++ b/vv-compare/static/extra.css
@@ -0,0 +1,149 @@
+/* VV compare specific */
+
+.processing-sub {
+  font-size: 13px;
+  color: var(--text-tertiary);
+  margin: 8px auto 0;
+  max-width: 400px;
+}
+
+.dual-drop {
+  display: flex;
+  align-items: stretch;
+  gap: 14px;
+  margin-bottom: 18px;
+}
+.drop-half { flex: 1; display: flex; flex-direction: column; gap: 6px; }
+.drop-label {
+  font-size: 11px;
+  font-weight: 600;
+  text-transform: uppercase;
+  letter-spacing: 0.06em;
+  color: var(--text-tertiary);
+  padding-left: 4px;
+}
+.drop-zone-mini {
+  flex: 1;
+  border: 1.5px dashed var(--border-strong);
+  border-radius: var(--radius-lg);
+  background: var(--bg-secondary);
+  padding: 32px 18px;
+  text-align: center;
+  cursor: pointer;
+  transition: border-color .15s, background .15s;
+  min-height: 140px;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+}
+.drop-zone-mini:hover { border-color: var(--primary); }
+.drop-zone-mini.drag-over { border-color: var(--primary); background: color-mix(in srgb, var(--primary) 5%, var(--bg-secondary)); }
+.drop-zone-mini.has-file {
+  border-style: solid;
+  border-color: var(--primary);
+  background: color-mix(in srgb, var(--primary) 4%, var(--bg-secondary));
+}
+.drop-arrow {
+  align-self: center;
+  font-size: 22px;
+  color: var(--text-quaternary);
+  font-weight: 200;
+  padding: 0 4px;
+}
+@media (max-width: 640px) {
+  .dual-drop { flex-direction: column; }
+  .drop-arrow { transform: rotate(90deg); padding: 4px 0; }
+}
+
+.run-row {
+  display: flex; align-items: center; gap: 14px;
+  padding-top: 16px; border-top: 1px solid var(--border-default);
+  flex-wrap: wrap;
+}
+.btn-lg { padding: 12px 26px; font-size: 14px; font-weight: 600; }
+.run-hint { font-size: 13px; color: var(--text-tertiary); }
+
+.recap-cards {
+  display: grid;
+  grid-template-columns: repeat(3, 1fr);
+  gap: 14px;
+  margin: 16px 0 22px;
+}
+.recap-card {
+  background: var(--card);
+  border: 1px solid var(--border-default);
+  border-radius: var(--radius-lg);
+  padding: 18px 22px;
+  border-left: 4px solid #94a3b8;
+}
+.recap-card.recap-changed { border-left-color: #f59e0b; }
+.recap-card.recap-added   { border-left-color: #22c55e; }
+.recap-card.recap-removed { border-left-color: #ef4444; }
+.recap-label {
+  font-size: 11px;
+  font-weight: 600;
+  text-transform: uppercase;
+  letter-spacing: 0.06em;
+  color: var(--text-tertiary);
+  margin-bottom: 6px;
+}
+.recap-value {
+  font-size: 32px;
+  font-weight: 600;
+  color: var(--text-primary);
+  font-variant-numeric: tabular-nums;
+  line-height: 1;
+}
+
+.per-sheet {
+  background: var(--card);
+  border: 1px solid var(--border-default);
+  border-radius: var(--radius-lg);
+  padding: 16px 18px;
+  overflow-x: auto;
+}
+.per-sheet table { width: 100%; border-collapse: collapse; font-size: 13px; }
+.per-sheet th, .per-sheet td {
+  padding: 8px 10px;
+  border-bottom: 1px solid var(--border-default);
+  text-align: left;
+}
+.per-sheet th {
+  font-size: 11px;
+  font-weight: 600;
+  text-transform: uppercase;
+  letter-spacing: 0.04em;
+  color: var(--text-tertiary);
+  background: var(--bg-secondary);
+}
+.per-sheet td.num { text-align: right; font-variant-numeric: tabular-nums; }
+.per-sheet .pill {
+  display: inline-block;
+  padding: 1px 7px;
+  border-radius: 999px;
+  font-weight: 600;
+  font-variant-numeric: tabular-nums;
+}
+.per-sheet .pill.changed { background: rgba(245,158,11,0.15); color: #b45309; }
+.per-sheet .pill.added   { background: rgba(34,197,94,0.15); color: #15803d; }
+.per-sheet .pill.removed { background: rgba(239,68,68,0.15); color: #b91c1c; }
+.per-sheet .pill.zero    { background: var(--bg-tertiary); color: var(--text-quaternary); }
+
+/* Back link */
+.back-link {
+  display: inline-flex; align-items: center; gap: 6px;
+  padding: 6px 12px 6px 10px; border-radius: 8px;
+  font-size: 13px; font-weight: 500; color: var(--text-tertiary);
+  text-decoration: none; border: 0.5px solid var(--border-default);
+  background: var(--bg-primary); flex-shrink: 0;
+  transition: color .15s, border-color .15s, background .15s;
+}
+.back-link:hover {
+  color: var(--primary); border-color: var(--primary);
+  background: color-mix(in srgb, var(--primary) 6%, var(--bg-primary));
+}
+.back-link svg { opacity: 0.8; }
+@media (max-width: 640px) {
+  .back-link span { display: none; }
+  .back-link { padding: 6px; }
+}
--- a/vv-compare/static/index.html
+++ b/vv-compare/static/index.html
@@ -0,0 +1,131 @@
+<!DOCTYPE html>
+<html lang="cs">
+<head>
+  <meta charset="UTF-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1.0">
+  <title>Porovnání VV | Colsys AI</title>
+  <link rel="preconnect" href="https://fonts.googleapis.com">
+  <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
+  <link rel="stylesheet" href="https://fonts.googleapis.com/css2?family=Geist:wght@400;500;600;700&display=swap">
+  <link rel="stylesheet" href="/static/styles.css">
+  <link rel="stylesheet" href="/static/extra.css">
+  <script>
+    (function () {
+      var t = null;
+      try { var p = new URL(window.location.href).searchParams.get("theme");
+            if (p === "dark" || p === "light") t = p; } catch (e) {}
+      if (!t) { try { t = localStorage.getItem("app_theme"); } catch (e) {} }
+      if (!t) { var m = document.cookie.match(/(?:^|;\s*)portal_theme=([^;]+)/);
+                if (m) t = decodeURIComponent(m[1]); }
+      if (t === "dark" || t === "light") {
+        document.documentElement.classList.add(t);
+        try { localStorage.setItem("app_theme", t); } catch (e) {}
+      }
+    })();
+  </script>
+</head>
+<body>
+
+<header class="header">
+  <div class="header-inner">
+    <a href="https://ai.klas.chat" class="brand">
+      <span class="brand-icon">C</span>
+      <span class="brand-name">Colsys <span class="brand-ai">AI</span></span>
+    </a>
+    <span class="header-crumb">Porovnání VV</span>
+    <a href="https://ai.klas.chat" class="back-link" title="Zpět na portál">
+      <svg width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.5" stroke-linecap="round" stroke-linejoin="round">
+        <path d="m15 18-6-6 6-6"/>
+      </svg>
+      <span>Zpět na portál</span>
+    </a>
+  </div>
+</header>
+
+<main class="main">
+
+  <section id="s-upload">
+    <div class="section-intro">
+      <h1 class="section-title">Porovnání výkazu výměr (původní vs nový)</h1>
+      <p class="section-desc">
+        Nahrajte dva soubory MaR VV — původní a nový. Aplikace najde
+        změny ve výměrách, MJ, přidané a odebrané položky a vytvoří
+        souhrnný Excel report.
+      </p>
+    </div>
+
+    <div class="dual-drop">
+      <div class="drop-half">
+        <div class="drop-label">PŮVODNÍ VV</div>
+        <div class="drop-zone-mini" id="drop-original">
+          <p class="drop-text" id="orig-text">Přetáhněte soubor sem nebo klikněte</p>
+          <input type="file" id="orig-input" accept=".xlsx,.xlsm" style="display:none">
+        </div>
+      </div>
+      <div class="drop-arrow">→</div>
+      <div class="drop-half">
+        <div class="drop-label">NOVÝ VV</div>
+        <div class="drop-zone-mini" id="drop-new">
+          <p class="drop-text" id="new-text">Přetáhněte soubor sem nebo klikněte</p>
+          <input type="file" id="new-input" accept=".xlsx,.xlsm" style="display:none">
+        </div>
+      </div>
+    </div>
+
+    <div class="run-row">
+      <button class="btn btn-primary btn-lg" id="compare-btn" type="button" disabled>
+        Porovnat
+      </button>
+      <span class="run-hint" id="compare-hint">Nahrajte oba soubory.</span>
+    </div>
+  </section>
+
+  <section id="s-processing" class="hidden">
+    <div class="processing-card">
+      <div class="spinner"></div>
+      <h2 class="processing-title">Porovnávám soubory…</h2>
+      <p class="processing-sub">Načítám oba sešity, párkuji listy a hledám změněné, přidané a odebrané položky. Při rozsáhlejších výkazech to může trvat půl minuty i déle — vyčkejte, nezavírejte stránku.</p>
+    </div>
+  </section>
+
+  <section id="s-result" class="hidden">
+    <div class="results-header">
+      <div>
+        <h2 class="results-title">Výsledek porovnání</h2>
+        <p class="results-meta" id="results-meta"></p>
+      </div>
+      <div class="results-actions">
+        <button class="btn btn-secondary" id="restart-btn" type="button">Nové porovnání</button>
+        <button class="btn btn-primary" id="download-btn" type="button">
+          <svg class="btn-icon" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
+            <path stroke-linecap="round" stroke-linejoin="round" d="M12 4.5v12m0 0-3.75-3.75M12 16.5l3.75-3.75M4.5 19.5h15"/>
+          </svg>
+          Stáhnout report Excel
+        </button>
+      </div>
+    </div>
+
+    <div class="recap-cards">
+      <div class="recap-card recap-changed">
+        <div class="recap-label">Změněné</div>
+        <div class="recap-value" id="cnt-changed">0</div>
+      </div>
+      <div class="recap-card recap-added">
+        <div class="recap-label">Přidané</div>
+        <div class="recap-value" id="cnt-added">0</div>
+      </div>
+      <div class="recap-card recap-removed">
+        <div class="recap-label">Odebrané</div>
+        <div class="recap-value" id="cnt-removed">0</div>
+      </div>
+    </div>
+
+    <div class="per-sheet" id="per-sheet"></div>
+
+  </section>
+
+</main>
+
+<script src="/static/app.js"></script>
+</body>
+</html>
--- a/vv-compare/static/styles.css
+++ b/vv-compare/static/styles.css
@@ -0,0 +1,461 @@
+*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
+
+:root {
+  --bg-primary: #ffffff;
+  --bg-secondary: #f9fafb;
+  --bg-tertiary: #f2f4f7;
+  --text-primary: #101828;
+  --text-secondary: #354052;
+  --text-tertiary: #676f83;
+  --text-quaternary: #98a2b2;
+  --border-default: rgb(16 24 40 / 0.08);
+  --border-strong: #d0d5dc;
+  --border-subtle: rgb(16 24 40 / 0.04);
+  --card: #ffffff;
+  --primary: #155aef;
+  --primary-hover: #004aeb;
+  --accent-indigo: #444ce7;
+  --shadow-card: 0 1px 2px rgb(16 24 40 / 0.05);
+  --radius-md: 8px;
+  --radius-lg: 12px;
+}
+
+/* Dark theme — applies when (a) user OS prefers dark and no .light override,
+   or (b) :root has explicit .dark class (set by portal_theme cookie). */
+@media (prefers-color-scheme: dark) {
+  :root:not(.light) {
+    --bg-primary: #14181f;
+    --bg-secondary: #1a1f29;
+    --bg-tertiary: #232936;
+    --text-primary: #f5f7fa;
+    --text-secondary: #c8ccd5;
+    --text-tertiary: #98a2b2;
+    --text-quaternary: #676f83;
+    --border-default: rgb(255 255 255 / 0.08);
+    --border-strong: #354052;
+    --border-subtle: rgb(255 255 255 / 0.04);
+    --card: #1a1f29;
+  }
+}
+:root.dark {
+  --bg-primary: #14181f;
+  --bg-secondary: #1a1f29;
+  --bg-tertiary: #232936;
+  --text-primary: #f5f7fa;
+  --text-secondary: #c8ccd5;
+  --text-tertiary: #98a2b2;
+  --text-quaternary: #676f83;
+  --border-default: rgb(255 255 255 / 0.08);
+  --border-strong: #354052;
+  --border-subtle: rgb(255 255 255 / 0.04);
+  --card: #1a1f29;
+}
+
+body {
+  font-family: "Geist", ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
+  background: var(--bg-secondary);
+  color: var(--text-primary);
+  min-height: 100vh;
+  font-size: 14px;
+  line-height: 1.5;
+  -webkit-font-smoothing: antialiased;
+  -moz-osx-font-smoothing: grayscale;
+}
+
+/* ── Header ─────────────────────────────────────── */
+.header {
+  position: sticky;
+  top: 0;
+  z-index: 30;
+  border-bottom: 0.5px solid var(--border-default);
+  background: color-mix(in srgb, var(--bg-secondary) 82%, transparent);
+  backdrop-filter: blur(8px);
+}
+.header-inner {
+  max-width: 1280px;   /* match portal max-w-7xl so brand doesn't shift */
+  margin: 0 auto;
+  height: 56px;        /* portal uses h-14 */
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  padding: 0 16px;     /* portal px-4 */
+  gap: 16px;
+}
+@media (min-width: 640px) {
+  .header-inner { padding: 0 32px; }  /* portal sm:px-8 */
+}
+.brand {
+  display: flex;
+  align-items: center;
+  gap: 10px;
+  text-decoration: none;
+  flex-shrink: 0;
+}
+.brand-icon {
+  width: 28px;
+  height: 28px;
+  border-radius: 8px;
+  background: linear-gradient(135deg, var(--primary) 0%, var(--accent-indigo) 100%);
+  box-shadow: 0 1px 2px rgb(16 24 40 / 0.06), inset 0 1px 0 rgb(255 255 255 / 0.18);
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  font-weight: 700;
+  font-size: 12px;
+  letter-spacing: -0.04em;
+  color: white;
+}
+.brand-name {
+  font-size: 14px;       /* tailwind text-sm */
+  font-weight: 600;
+  letter-spacing: -0.025em;  /* tailwind tracking-tight */
+  color: var(--text-primary);
+}
+.brand-ai { color: var(--primary); }
+.header-crumb {
+  font-size: 13px;
+  color: var(--text-tertiary);
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: ellipsis;
+}
+
+/* ── Main ────────────────────────────────────────── */
+.main {
+  max-width: 900px;
+  margin: 0 auto;
+  padding: 40px 24px 80px;
+  display: flex;
+  flex-direction: column;
+  gap: 32px;
+}
+@media (max-width: 640px) {
+  .header-inner { padding: 0 16px; }
+  .main { padding: 24px 16px 60px; }
+}
+
+/* ── Section intro ───────────────────────────────── */
+.section-intro { margin-bottom: 24px; }
+.section-title {
+  font-size: 22px;
+  font-weight: 600;
+  letter-spacing: -0.02em;
+  margin-bottom: 8px;
+}
+.section-desc {
+  color: var(--text-tertiary);
+  max-width: 580px;
+  font-size: 14px;
+  line-height: 1.6;
+}
+
+/* ── Examples panel ──────────────────────────────── */
+.examples-panel {
+  border: 1px solid var(--border-default);
+  border-radius: var(--radius-lg);
+  background: var(--card);
+  box-shadow: var(--shadow-card);
+  padding: 16px;
+  margin-bottom: 16px;
+}
+.examples-header {
+  display: flex;
+  flex-direction: column;
+  gap: 3px;
+  margin-bottom: 12px;
+}
+.examples-title {
+  font-size: 13px;
+  font-weight: 600;
+  color: var(--text-secondary);
+}
+.examples-subtitle {
+  font-size: 12px;
+  color: var(--text-tertiary);
+  line-height: 1.5;
+}
+.examples-list {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 6px;
+  min-height: 28px;
+  margin-bottom: 10px;
+}
+.examples-list:empty::before {
+  content: "Zatím žádné vzory — přidejte alespoň jeden níže";
+  font-size: 12px;
+  color: var(--text-quaternary);
+  font-style: italic;
+  padding: 6px 0;
+}
+.example-chip {
+  display: inline-flex;
+  align-items: center;
+  gap: 6px;
+  background: color-mix(in srgb, var(--primary) 10%, var(--bg-primary));
+  border: 1px solid color-mix(in srgb, var(--primary) 30%, transparent);
+  color: var(--text-primary);
+  padding: 4px 4px 4px 10px;
+  border-radius: 999px;
+  font-size: 12px;
+  font-family: ui-monospace, monospace;
+}
+.example-chip-remove {
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  width: 18px;
+  height: 18px;
+  border-radius: 50%;
+  background: transparent;
+  border: none;
+  cursor: pointer;
+  color: var(--text-tertiary);
+  padding: 0;
+  transition: background 0.1s, color 0.1s;
+}
+.example-chip-remove:hover {
+  background: color-mix(in srgb, var(--primary) 18%, transparent);
+  color: var(--text-primary);
+}
+.example-chip-remove svg {
+  width: 12px;
+  height: 12px;
+}
+.examples-input-row {
+  display: flex;
+  gap: 8px;
+}
+.example-input {
+  flex: 1;
+  font-family: ui-monospace, monospace;
+  font-size: 13px;
+  padding: 8px 12px;
+  border: 1px solid var(--border-strong);
+  border-radius: var(--radius-md);
+  background: var(--bg-primary);
+  color: var(--text-primary);
+  min-width: 0;
+}
+.example-input:focus {
+  outline: none;
+  border-color: var(--primary);
+  box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 18%, transparent);
+}
+.example-add-btn {
+  flex-shrink: 0;
+}
+
+/* ── Drop zone ───────────────────────────────────── */
+.drop-zone {
+  border: 1.5px dashed var(--border-strong);
+  border-radius: var(--radius-lg);
+  background: var(--card);
+  padding: 56px 32px;
+  text-align: center;
+  cursor: pointer;
+  transition: border-color 0.15s, background 0.15s;
+  box-shadow: var(--shadow-card);
+}
+.drop-zone:hover, .drop-zone.drag-over {
+  border-color: var(--primary);
+  background: color-mix(in srgb, var(--primary) 4%, var(--card));
+}
+.drop-icon {
+  width: 44px;
+  height: 44px;
+  color: var(--text-quaternary);
+  margin: 0 auto 18px;
+  display: block;
+  transition: color 0.15s;
+}
+.drop-zone:hover .drop-icon, .drop-zone.drag-over .drop-icon {
+  color: var(--primary);
+}
+.drop-text {
+  font-size: 15px;
+  font-weight: 500;
+  color: var(--text-secondary);
+  margin-bottom: 6px;
+}
+.drop-or {
+  font-size: 13px;
+  color: var(--text-quaternary);
+  margin-bottom: 14px;
+}
+.drop-formats {
+  font-size: 12px;
+  color: var(--text-quaternary);
+  margin-top: 14px;
+}
+
+/* ── Buttons ─────────────────────────────────────── */
+.btn {
+  display: inline-flex;
+  align-items: center;
+  gap: 6px;
+  padding: 8px 16px;
+  border-radius: var(--radius-md);
+  font-size: 13px;
+  font-weight: 500;
+  cursor: pointer;
+  border: none;
+  transition: background 0.15s, box-shadow 0.15s;
+  line-height: 1;
+}
+.btn-primary {
+  background: var(--primary);
+  color: #fff;
+  box-shadow: 0 1px 2px rgb(21 90 239 / 0.25);
+}
+.btn-primary:hover { background: var(--primary-hover); }
+.btn-primary:disabled { opacity: 0.5; cursor: default; }
+.btn-secondary {
+  background: var(--bg-tertiary);
+  color: var(--text-secondary);
+  border: 1px solid var(--border-strong);
+}
+.btn-secondary:hover { background: var(--border-strong); }
+.btn-icon { width: 15px; height: 15px; flex-shrink: 0; }
+
+/* ── Processing card ─────────────────────────────── */
+.processing-card {
+  background: var(--card);
+  border: 1px solid var(--border-default);
+  border-radius: var(--radius-lg);
+  padding: 56px 32px;
+  text-align: center;
+  box-shadow: var(--shadow-card);
+}
+.spinner {
+  width: 36px;
+  height: 36px;
+  border: 3px solid var(--border-strong);
+  border-top-color: var(--primary);
+  border-radius: 50%;
+  animation: spin 0.75s linear infinite;
+  margin: 0 auto 22px;
+}
+@keyframes spin { to { transform: rotate(360deg); } }
+.processing-title {
+  font-size: 16px;
+  font-weight: 600;
+  margin-bottom: 20px;
+  color: var(--text-primary);
+}
+.steps-list {
+  display: flex;
+  flex-direction: column;
+  gap: 8px;
+  max-width: 320px;
+  margin: 0 auto;
+  text-align: left;
+}
+.step-item {
+  display: flex;
+  align-items: center;
+  gap: 10px;
+  font-size: 13px;
+  color: var(--text-tertiary);
+  padding: 8px 12px;
+  border-radius: var(--radius-md);
+  background: var(--bg-tertiary);
+}
+.step-item.active {
+  color: var(--primary);
+  background: color-mix(in srgb, var(--primary) 8%, var(--bg-primary));
+}
+.step-item.done { color: #17b26a; }
+.step-item.error { color: #d92d20; background: #fef3f2; }
+.step-dot {
+  width: 8px; height: 8px;
+  border-radius: 50%;
+  background: currentColor;
+  flex-shrink: 0;
+}
+
+/* ── Results ─────────────────────────────────────── */
+.results-header {
+  display: flex;
+  align-items: flex-start;
+  justify-content: space-between;
+  gap: 16px;
+  flex-wrap: wrap;
+}
+.results-title {
+  font-size: 18px;
+  font-weight: 600;
+  letter-spacing: -0.015em;
+  margin-bottom: 4px;
+}
+.results-meta {
+  font-size: 13px;
+  color: var(--text-tertiary);
+}
+.results-actions { display: flex; gap: 8px; flex-wrap: wrap; }
+
+/* ── Table ───────────────────────────────────────── */
+.table-wrap {
+  border: 1px solid var(--border-default);
+  border-radius: var(--radius-lg);
+  overflow: hidden;
+  box-shadow: var(--shadow-card);
+  background: var(--card);
+  overflow-x: auto;
+}
+table {
+  width: 100%;
+  border-collapse: collapse;
+  font-size: 13px;
+  min-width: 500px;
+}
+thead {
+  background: var(--bg-tertiary);
+  border-bottom: 1px solid var(--border-default);
+}
+th {
+  padding: 10px 14px;
+  text-align: left;
+  font-size: 11px;
+  font-weight: 600;
+  text-transform: uppercase;
+  letter-spacing: 0.05em;
+  color: var(--text-tertiary);
+  white-space: nowrap;
+}
+td {
+  padding: 8px 14px;
+  border-bottom: 1px solid var(--border-subtle);
+  color: var(--text-primary);
+  vertical-align: middle;
+}
+tr:last-child td { border-bottom: none; }
+tr:nth-child(even) td { background: var(--bg-secondary); }
+td[contenteditable]:focus {
+  outline: none;
+  background: color-mix(in srgb, var(--primary) 6%, var(--bg-primary));
+  box-shadow: inset 0 0 0 1.5px var(--primary);
+  border-radius: 3px;
+}
+
+.badge {
+  display: inline-block;
+  padding: 2px 8px;
+  border-radius: 99px;
+  font-size: 11px;
+  font-weight: 500;
+}
+.badge-rule { background: #d1e0ff; color: #004aeb; }
+.badge-llm  { background: #d1fae5; color: #065f46; }
+@media (prefers-color-scheme: dark) {
+  .badge-rule { background: #1e3a8a; color: #93c5fd; }
+  .badge-llm  { background: #064e3b; color: #6ee7b7; }
+}
+
+.table-hint {
+  font-size: 12px;
+  color: var(--text-quaternary);
+  margin-top: 8px;
+}
+
+.hidden { display: none !important; }
--- a/vv-compare/vv_compare.py
+++ b/vv-compare/vv_compare.py
@@ -0,0 +1,507 @@
+"""Compare original vs new VV (Výkaz Výměr) Excel files.
+
+Produces a 4-sheet report:
+  - Souhrn   — overview table with per-sheet counts + grand totals
+  - Změny    — items present in both but with different quantity / MJ
+  - Přidané  — items in new but not in original
+  - Odebrané — items in original but not in new
+
+Following Jirka's spec exactly: section rows are skipped, change = qty/MJ
+diff only (NOT price), heavy use of colour-coding.
+"""
+import logging
+import re
+from collections import defaultdict
+from pathlib import Path
+
+import openpyxl
+from openpyxl.styles import Alignment, Border, Font, PatternFill, Side
+from openpyxl.utils import get_column_letter
+from openpyxl.workbook import Workbook
+
+logger = logging.getLogger(__name__)
+
+HEADER_HINTS = {
+    "por":   ["poř.", "por.", "pořadí", "č.", "č"],
+    "kod":   ["kód", "kod"],
+    "popis": ["popis", "název", "název položky"],
+    "mj":    ["mj", "j.j.", "jednotka"],
+    "vymera": ["výměra", "vymera", "množství", "mnozstvi"],
+    "cena_jed": ["jednotková cena", "jednotkova cena", "j. cena", "j.cena",
+                 "jed. cena", "cena/jed", "cena j.", "cena za jednotku"],
+    "cena_tot": ["cena celkem", "celkem", "cena"],
+}
+
+# Colors per spec
+BLUE = "1F4E78"
+WHITE = "FFFFFF"
+GRAY = "F2F2F2"
+YELLOW = "FFF2CC"      # changes
+GREEN_BG = "D9EAD3"    # added
+RED_BG = "F4CCCC"      # removed
+GREEN_DIFF = "E4F0DC"  # positive qty diff
+RED_DIFF = "FCE4E4"    # negative qty diff
+DARK_GREEN = "006100"
+DARK_RED = "C00000"
+GRAY_TEXT = "595959"
+BORDER_GRAY = "BFBFBF"
+
+THIN = Side(style="thin", color=BORDER_GRAY)
+BORDER = Border(left=THIN, right=THIN, top=THIN, bottom=THIN)
+
+
+def normalise(text) -> str:
+    if text is None:
+        return ""
+    return re.sub(r"\s+", " ", str(text).strip())
+
+
+def _to_float(v):
+    if v is None or v == "":
+        return None
+    try:
+        return float(v)
+    except (ValueError, TypeError):
+        return None
+
+
+def find_header(ws) -> dict | None:
+    """Return header column mapping or None if no VV-like header found."""
+    for row_idx in range(1, min(13, ws.max_row + 1)):
+        matched = {}
+        for col_idx in range(1, min(15, ws.max_column + 1)):
+            val = normalise(ws.cell(row=row_idx, column=col_idx).value).lower()
+            for role, hints in HEADER_HINTS.items():
+                if role in matched:
+                    continue
+                if any(val == h or val.startswith(h) for h in hints):
+                    matched[role] = col_idx
+                    break
+        if "popis" in matched and "vymera" in matched and "mj" in matched:
+            matched["_header_row"] = row_idx
+            return matched
+    return None
+
+
+def extract_items(ws, header: dict) -> tuple[list[dict], str | None]:
+    """Return (items, hala_name)."""
+    header_row = header["_header_row"]
+    # Hall/object name: row 4 col C per spec, but be flexible
+    hala = None
+    for r in range(1, header_row):
+        for c in range(1, min(8, ws.max_column + 1)):
+            v = ws.cell(row=r, column=c).value
+            if v and isinstance(v, str) and 5 < len(v) < 200 \
+                    and "vykaz" not in v.lower() and "výkaz" not in v.lower():
+                hala = v.strip()
+                break
+        if hala:
+            break
+
+    items = []
+    current_section = None
+    popis_col = header["popis"]
+    mj_col = header["mj"]
+    vymera_col = header["vymera"]
+    cena_jed_col = header.get("cena_jed")
+    cena_tot_col = header.get("cena_tot")
+    kod_col = header.get("kod")
+
+    for r in range(header_row + 1, ws.max_row + 1):
+        popis = ws.cell(row=r, column=popis_col).value
+        if popis is None or not str(popis).strip():
+            continue
+        popis_text = str(popis).strip()
+        mj_val = ws.cell(row=r, column=mj_col).value
+        # Detect section row: empty MJ + description contains ":"
+        if (not mj_val or not str(mj_val).strip()) and ":" in popis_text \
+                and len(popis_text) < 100:
+            current_section = popis_text
+            continue
+        vymera = _to_float(ws.cell(row=r, column=vymera_col).value)
+        # Skip rows without quantity (probably subtotals)
+        if vymera is None:
+            continue
+        items.append({
+            "row": r,
+            "section": current_section,
+            "kod": ws.cell(row=r, column=kod_col).value if kod_col else None,
+            "description": popis_text,
+            "description_norm": normalise(popis_text),
+            "mj": str(mj_val).strip() if mj_val else "",
+            "vymera": vymera,
+            "cena_jed": _to_float(ws.cell(row=r, column=cena_jed_col).value) if cena_jed_col else None,
+            "cena_tot": _to_float(ws.cell(row=r, column=cena_tot_col).value) if cena_tot_col else None,
+        })
+    return items, hala
+
+
+def analyse_workbook(path: Path) -> dict:
+    """Return {sheet_name: {items, hala, header_found}}."""
+    wb = openpyxl.load_workbook(path, data_only=True)
+    out = {}
+    for ws in wb.worksheets:
+        header = find_header(ws)
+        if not header:
+            continue
+        items, hala = extract_items(ws, header)
+        if not items:
+            continue
+        out[ws.title] = {"items": items, "hala": hala, "header": header}
+    wb.close()
+    return out
+
+
+def compare(orig_path: Path, new_path: Path) -> dict:
+    orig_sheets = analyse_workbook(orig_path)
+    new_sheets = analyse_workbook(new_path)
+
+    # Match sheets by exact name first; fall back to position-based match for unmatched.
+    matched_pairs: list[tuple[str | None, str | None]] = []
+    orig_used: set[str] = set()
+    new_used: set[str] = set()
+    for name in orig_sheets:
+        if name in new_sheets:
+            matched_pairs.append((name, name))
+            orig_used.add(name)
+            new_used.add(name)
+    remaining_orig = [s for s in orig_sheets if s not in orig_used]
+    remaining_new = [s for s in new_sheets if s not in new_used]
+    # Position match by order of declaration
+    for o, n in zip(remaining_orig, remaining_new):
+        matched_pairs.append((o, n))
+    # Orphans (only orig)
+    for o in remaining_orig[len(remaining_new):]:
+        matched_pairs.append((o, None))
+    for n in remaining_new[len(remaining_orig):]:
+        matched_pairs.append((None, n))
+
+    per_sheet = []
+    all_changes = []
+    all_added = []
+    all_removed = []
+
+    for orig_name, new_name in matched_pairs:
+        orig_items = orig_sheets.get(orig_name, {}).get("items", []) if orig_name else []
+        new_items  = new_sheets.get(new_name, {}).get("items", []) if new_name else []
+        hala = (new_sheets.get(new_name, {}).get("hala") if new_name else None) \
+            or (orig_sheets.get(orig_name, {}).get("hala") if orig_name else None) \
+            or ""
+        sheet_label = new_name or orig_name or ""
+
+        # Pair items by (section, description_norm)
+        orig_index = defaultdict(list)
+        for it in orig_items:
+            orig_index[(it["section"] or "", it["description_norm"])].append(it)
+        new_index = defaultdict(list)
+        for it in new_items:
+            new_index[(it["section"] or "", it["description_norm"])].append(it)
+
+        changes = []
+        added = []
+        removed = []
+
+        # Items present in both
+        for key, new_list in new_index.items():
+            orig_list = orig_index.get(key, [])
+            if not orig_list:
+                for it in new_list:
+                    added.append({
+                        "sheet": sheet_label, "hala": hala,
+                        "section": key[0], "description": it["description"],
+                        "mj": it["mj"], "vymera": it["vymera"],
+                        "cena_jed": it["cena_jed"], "cena_tot": it["cena_tot"],
+                    })
+                continue
+            # Compare in pairs (one-to-one by index)
+            for idx, new_it in enumerate(new_list):
+                if idx >= len(orig_list):
+                    # Duplicate added entry
+                    added.append({
+                        "sheet": sheet_label, "hala": hala,
+                        "section": key[0], "description": new_it["description"],
+                        "mj": new_it["mj"], "vymera": new_it["vymera"],
+                        "cena_jed": new_it["cena_jed"], "cena_tot": new_it["cena_tot"],
+                    })
+                    continue
+                orig_it = orig_list[idx]
+                qty_diff = (new_it["vymera"] or 0) - (orig_it["vymera"] or 0)
+                mj_diff = orig_it["mj"] != new_it["mj"]
+                if abs(qty_diff) > 1e-9 or mj_diff:
+                    changes.append({
+                        "sheet": sheet_label, "hala": hala,
+                        "section": key[0], "description": new_it["description"],
+                        "mj_orig": orig_it["mj"], "mj_new": new_it["mj"],
+                        "vymera_orig": orig_it["vymera"], "vymera_new": new_it["vymera"],
+                        "vymera_diff": qty_diff,
+                        "cena_jed_orig": orig_it["cena_jed"],
+                        "cena_orig": orig_it["cena_tot"],
+                        "cena_new": new_it["cena_tot"],
+                    })
+        # Items only in original
+        for key, orig_list in orig_index.items():
+            if key in new_index:
+                # Handle leftover originals (orig had more duplicates than new)
+                used = min(len(new_index[key]), len(orig_list))
+                for it in orig_list[used:]:
+                    removed.append({
+                        "sheet": sheet_label, "hala": hala,
+                        "section": key[0], "description": it["description"],
+                        "mj": it["mj"], "vymera": it["vymera"],
+                        "cena_jed": it["cena_jed"], "cena_tot": it["cena_tot"],
+                    })
+                continue
+            for it in orig_list:
+                removed.append({
+                    "sheet": sheet_label, "hala": hala,
+                    "section": key[0], "description": it["description"],
+                    "mj": it["mj"], "vymera": it["vymera"],
+                    "cena_jed": it["cena_jed"], "cena_tot": it["cena_tot"],
+                })
+
+        per_sheet.append({
+            "sheet": sheet_label,
+            "hala": hala,
+            "orig_count": len(orig_items),
+            "new_count": len(new_items),
+            "changes": len(changes),
+            "added": len(added),
+            "removed": len(removed),
+        })
+        all_changes.extend(changes)
+        all_added.extend(added)
+        all_removed.extend(removed)
+
+    return {
+        "per_sheet": per_sheet,
+        "changes": all_changes,
+        "added": all_added,
+        "removed": all_removed,
+    }
+
+
+# ── Excel report writer (4 sheets per spec) ───────────────────
+
+NUM_QTY = '#,##0.##;[Red]-#,##0.##;"-"'
+NUM_CZK = '#,##0.00 "Kč";[Red]-#,##0.00 "Kč";"-"'
+
+
+def _title(ws, text: str, subtitle: str = ""):
+    cell = ws.cell(row=1, column=1, value=text)
+    cell.font = Font(name="Arial", bold=True, size=14, color=BLUE)
+    ws.merge_cells(start_row=1, start_column=1, end_row=1, end_column=12)
+    if subtitle:
+        sub = ws.cell(row=2, column=1, value=subtitle)
+        sub.font = Font(name="Arial", italic=True, size=10, color=GRAY_TEXT)
+        ws.merge_cells(start_row=2, start_column=1, end_row=2, end_column=12)
+
+
+def _hdr_cell(cell):
+    cell.font = Font(name="Arial", bold=True, size=11, color=WHITE)
+    cell.fill = PatternFill("solid", fgColor=BLUE)
+    cell.alignment = Alignment(horizontal="center", vertical="center", wrap_text=True)
+    cell.border = BORDER
+
+
+def _body_cell(cell, num_format: str | None = None, fill: str | None = None,
+               bold: bool = False, color: str | None = None,
+               horizontal: str | None = None):
+    cell.font = Font(name="Arial", size=10, bold=bold,
+                     color=color or "000000")
+    cell.border = BORDER
+    if fill:
+        cell.fill = PatternFill("solid", fgColor=fill)
+    if num_format:
+        cell.number_format = num_format
+    cell.alignment = Alignment(horizontal=horizontal or "left",
+                               vertical="top",
+                               wrap_text=True)
+
+
+def write_compare_report(result: dict, orig_filename: str, new_filename: str,
+                         out_path: Path) -> Path:
+    wb = Workbook()
+
+    # ── 1. Souhrn ─────────────────────────────────────────
+    ws = wb.active
+    ws.title = "Souhrn"
+    _title(ws, "Porovnání výkazu výměr",
+           f"Původní: {orig_filename} · Nový: {new_filename}")
+
+    headers = ["List", "Hala / objekt", "Počet pol. (původní)", "Počet pol. (nový)",
+               "Změněné položky", "Přidané položky", "Odebrané položky"]
+    for c, h in enumerate(headers, 1):
+        _hdr_cell(ws.cell(row=4, column=c, value=h))
+    r = 5
+    for ps in result["per_sheet"]:
+        ws.cell(row=r, column=1, value=ps["sheet"])
+        ws.cell(row=r, column=2, value=ps["hala"])
+        ws.cell(row=r, column=3, value=ps["orig_count"])
+        ws.cell(row=r, column=4, value=ps["new_count"])
+        ws.cell(row=r, column=5, value=ps["changes"])
+        ws.cell(row=r, column=6, value=ps["added"])
+        ws.cell(row=r, column=7, value=ps["removed"])
+        for c in range(1, 8):
+            _body_cell(ws.cell(row=r, column=c))
+        # Colored highlights when > 0
+        if ps["changes"]:
+            _body_cell(ws.cell(row=r, column=5), fill=YELLOW, bold=True,
+                       horizontal="right")
+        if ps["added"]:
+            _body_cell(ws.cell(row=r, column=6), fill=GREEN_BG, bold=True,
+                       color=DARK_GREEN, horizontal="right")
+        if ps["removed"]:
+            _body_cell(ws.cell(row=r, column=7), fill=RED_BG, bold=True,
+                       color=DARK_RED, horizontal="right")
+        r += 1
+    # CELKEM row
+    if result["per_sheet"]:
+        first_data_row = 5
+        last_data_row = r - 1
+        ws.cell(row=r, column=1, value="CELKEM")
+        for c in range(3, 8):
+            col_letter = get_column_letter(c)
+            ws.cell(row=r, column=c,
+                    value=f"=SUM({col_letter}{first_data_row}:{col_letter}{last_data_row})")
+        for c in range(1, 8):
+            _body_cell(ws.cell(row=r, column=c),
+                       fill=GRAY, bold=True,
+                       horizontal=("right" if c >= 3 else "left"))
+        r += 1
+
+    # Recap box
+    r += 1
+    ws.cell(row=r, column=1, value="Rekapitulace změn (celkem)").font = \
+        Font(name="Arial", bold=True, size=12, color=BLUE)
+    r += 1
+    for label, cnt, fill, color in [
+        ("Změněné", len(result["changes"]), YELLOW, None),
+        ("Přidané", len(result["added"]), GREEN_BG, DARK_GREEN),
+        ("Odebrané", len(result["removed"]), RED_BG, DARK_RED),
+    ]:
+        _body_cell(ws.cell(row=r, column=1, value=label), bold=True)
+        _body_cell(ws.cell(row=r, column=2, value=cnt),
+                   fill=fill, bold=True, color=color, horizontal="right")
+        r += 1
+
+    r += 1
+    note = ws.cell(row=r, column=1,
+                   value=("Za „změnu\" je považován pouze rozdíl ve výměře nebo MJ. "
+                          "Cenové rozdíly se ignorují, protože nový VV obvykle ceny "
+                          "neobsahuje."))
+    note.font = Font(name="Arial", italic=True, size=9, color=GRAY_TEXT)
+    note.alignment = Alignment(wrap_text=True)
+    ws.merge_cells(start_row=r, start_column=1, end_row=r, end_column=7)
+
+    for c, w in {1: 22, 2: 30, 3: 18, 4: 18, 5: 18, 6: 18, 7: 18}.items():
+        ws.column_dimensions[get_column_letter(c)].width = w
+    ws.row_dimensions[4].height = 32
+
+    # ── 2. Změny ─────────────────────────────────────────
+    ws = wb.create_sheet("Změny")
+    _title(ws, "Změněné položky (rozdíl ve výměře nebo MJ)")
+    cols = ["List", "Hala", "Sekce", "Popis položky",
+            "MJ orig.", "MJ nová", "Výměra orig.", "Výměra nová", "Rozdíl výměra",
+            "Jed. cena orig.", "Cena orig.", "Cena nová"]
+    for c, h in enumerate(cols, 1):
+        _hdr_cell(ws.cell(row=4, column=c, value=h))
+    r = 5
+    for ch in result["changes"]:
+        ws.cell(row=r, column=1, value=ch["sheet"])
+        ws.cell(row=r, column=2, value=ch["hala"])
+        ws.cell(row=r, column=3, value=ch["section"])
+        ws.cell(row=r, column=4, value=ch["description"])
+        ws.cell(row=r, column=5, value=ch["mj_orig"])
+        ws.cell(row=r, column=6, value=ch["mj_new"])
+        ws.cell(row=r, column=7, value=ch["vymera_orig"])
+        ws.cell(row=r, column=8, value=ch["vymera_new"])
+        ws.cell(row=r, column=9, value=ch["vymera_diff"])
+        ws.cell(row=r, column=10, value=ch["cena_jed_orig"])
+        ws.cell(row=r, column=11, value=ch["cena_orig"])
+        ws.cell(row=r, column=12, value=ch["cena_new"])
+        for c in range(1, 13):
+            _body_cell(ws.cell(row=r, column=c))
+        # Number formats
+        for c in (7, 8, 9):
+            ws.cell(row=r, column=c).number_format = NUM_QTY
+            ws.cell(row=r, column=c).alignment = Alignment(horizontal="right", vertical="top")
+        for c in (10, 11, 12):
+            ws.cell(row=r, column=c).number_format = NUM_CZK
+            ws.cell(row=r, column=c).alignment = Alignment(horizontal="right", vertical="top")
+        # Highlight diff cell
+        diff_fill = GREEN_DIFF if ch["vymera_diff"] > 0 else RED_DIFF
+        _body_cell(ws.cell(row=r, column=9), fill=diff_fill, bold=True,
+                   num_format=NUM_QTY, horizontal="right")
+        r += 1
+
+    widths = {1: 14, 2: 22, 3: 22, 4: 50, 5: 10, 6: 10, 7: 14, 8: 14, 9: 14, 10: 14, 11: 14, 12: 14}
+    for c, w in widths.items():
+        ws.column_dimensions[get_column_letter(c)].width = w
+    ws.freeze_panes = "A5"
+    ws.auto_filter.ref = f"A4:L{max(5, r - 1)}"
+    ws.row_dimensions[4].height = 32
+
+    # ── 3. Přidané ─────────────────────────────────────────
+    ws = wb.create_sheet("Přidané")
+    _title(ws, "Přidané položky (jsou v novém VV, nebyly v původním)")
+    add_cols = ["List", "Hala", "Sekce", "Popis položky", "MJ", "Výměra",
+                "Jed. cena", "Cena"]
+    for c, h in enumerate(add_cols, 1):
+        _hdr_cell(ws.cell(row=4, column=c, value=h))
+    r = 5
+    for it in result["added"]:
+        vals = [it["sheet"], it["hala"], it["section"], it["description"],
+                it["mj"], it["vymera"], it["cena_jed"], it["cena_tot"]]
+        for c, v in enumerate(vals, 1):
+            _body_cell(ws.cell(row=r, column=c, value=v),
+                       fill=GREEN_BG, color=DARK_GREEN)
+        ws.cell(row=r, column=6).number_format = NUM_QTY
+        ws.cell(row=r, column=6).alignment = Alignment(horizontal="right", vertical="top")
+        ws.cell(row=r, column=7).number_format = NUM_CZK
+        ws.cell(row=r, column=7).alignment = Alignment(horizontal="right", vertical="top")
+        ws.cell(row=r, column=8).number_format = NUM_CZK
+        ws.cell(row=r, column=8).alignment = Alignment(horizontal="right", vertical="top")
+        r += 1
+    for c, w in {1: 14, 2: 22, 3: 22, 4: 50, 5: 10, 6: 14, 7: 14, 8: 14}.items():
+        ws.column_dimensions[get_column_letter(c)].width = w
+    ws.freeze_panes = "A5"
+    ws.auto_filter.ref = f"A4:H{max(5, r - 1)}"
+    ws.row_dimensions[4].height = 32
+
+    # ── 4. Odebrané ─────────────────────────────────────────
+    ws = wb.create_sheet("Odebrané")
+    _title(ws, "Odebrané položky (byly v původním VV, v novém nejsou)")
+    for c, h in enumerate(add_cols, 1):
+        _hdr_cell(ws.cell(row=4, column=c, value=h))
+    r = 5
+    first_data_row = r
+    for it in result["removed"]:
+        vals = [it["sheet"], it["hala"], it["section"], it["description"],
+                it["mj"], it["vymera"], it["cena_jed"], it["cena_tot"]]
+        for c, v in enumerate(vals, 1):
+            _body_cell(ws.cell(row=r, column=c, value=v),
+                       fill=RED_BG, color=DARK_RED)
+        ws.cell(row=r, column=6).number_format = NUM_QTY
+        ws.cell(row=r, column=6).alignment = Alignment(horizontal="right", vertical="top")
+        ws.cell(row=r, column=7).number_format = NUM_CZK
+        ws.cell(row=r, column=7).alignment = Alignment(horizontal="right", vertical="top")
+        ws.cell(row=r, column=8).number_format = NUM_CZK
+        ws.cell(row=r, column=8).alignment = Alignment(horizontal="right", vertical="top")
+        r += 1
+    last_data_row = r - 1
+    if last_data_row >= first_data_row:
+        # Sum cena_tot column
+        ws.cell(row=r, column=1, value="Součet")
+        ws.cell(row=r, column=8,
+                value=f"=SUM(H{first_data_row}:H{last_data_row})")
+        for c in range(1, 9):
+            _body_cell(ws.cell(row=r, column=c), fill=GRAY, bold=True,
+                       horizontal=("right" if c == 8 else "left"))
+        ws.cell(row=r, column=8).number_format = NUM_CZK
+    for c, w in {1: 14, 2: 22, 3: 22, 4: 50, 5: 10, 6: 14, 7: 14, 8: 14}.items():
+        ws.column_dimensions[get_column_letter(c)].width = w
+    ws.freeze_panes = "A5"
+    ws.row_dimensions[4].height = 32
+
+    wb.save(str(out_path))
+    return out_path