Add invoice template editor

frontend/src/App.tsx

@@ -13,6 +13,7 @@ import SearchPage from "./pages/SearchPage";
 import SearchFarmerPage from "./pages/SearchFarmerPage";
 import SearchCalendarPage from "./pages/SearchCalendarPage";
 import UserManagementPage from "./pages/UserManagementPage";
+import InvoiceTemplatePage from "./pages/InvoiceTemplatePage";
 
 function ProtectedRoutes() {
   const { user, ready } = useSession();
@@ -35,6 +36,7 @@ function ProtectedRoutes() {
         <Route path="/samples/:sampleId/anamnesis" element={<AnamnesisPage />} />
         <Route path="/samples/:sampleId/antibiogram" element={<AntibiogramPage />} />
         <Route path="/samples/:sampleId/therapy" element={<TherapyPage />} />
+        <Route path="/invoice-template" element={<InvoiceTemplatePage />} />
         <Route path="/admin" element={<Navigate to={isAdmin ? "/admin/landwirte" : "/admin/benutzer"} replace />} />
         <Route path="/admin/benutzer" element={<UserManagementPage />} />
         <Route path="/admin/landwirte" element={<AdministrationPage />} />

frontend/src/layout/AppShell.tsx

@@ -5,6 +5,7 @@ const PAGE_TITLES: Record<string, string> = {
   "/home": "Startseite",
   "/samples/new": "Neuanlage einer Probe",
   "/portal": "MUH-Portal",
+  "/invoice-template": "Rechnungstemplate",
 };
 
 function resolvePageTitle(pathname: string) {
@@ -79,6 +80,9 @@ export default function AppShell() {
               <div className="nav-group">
                 <div className="nav-group__label">Verwaltung</div>
                 <div className="nav-subnav">
+                  <NavLink to="/invoice-template" className={({ isActive }) => `nav-sublink ${isActive ? "is-active" : ""}`}>
+                    Rechnungstemplate
+                  </NavLink>
                   <NavLink to="/admin/landwirte" className={({ isActive }) => `nav-sublink ${isActive ? "is-active" : ""}`}>
                     Landwirte
                   </NavLink>

frontend/src/lib/storage.ts

@@ -1,2 +1,3 @@
 export const USER_STORAGE_KEY = "muh.current-user";
 export const AUTH_TOKEN_STORAGE_KEY = "muh.auth-token";
+export const INVOICE_TEMPLATE_STORAGE_KEY = "muh.invoice-template";

frontend/src/styles/global.css

@@ -741,7 +741,314 @@ a {
   justify-content: flex-end;
 }
 
+.invoice-template-page {
+  min-height: 0;
+  overflow: hidden;
+}
+
+.invoice-template-page__card {
+  display: grid;
+  grid-template-rows: auto minmax(0, 1fr);
+  height: 100%;
+  padding: 20px;
+  overflow: hidden;
+}
+
+.invoice-template-page__card .section-card__header {
+  margin-bottom: 12px;
+}
+
+.invoice-template-page__card .page-actions {
+  margin-top: 0;
+}
+
+.invoice-template {
+  display: grid;
+  grid-template-columns: minmax(230px, 280px) minmax(0, 1fr) minmax(260px, 320px);
+  gap: 24px;
+  align-items: start;
+  min-height: 0;
+  height: 100%;
+  overflow: hidden;
+}
+
+.invoice-template__panel,
+.invoice-template__canvas-column {
+  display: grid;
+  grid-template-rows: auto minmax(0, 1fr);
+  gap: 18px;
+  min-height: 0;
+}
+
+.invoice-template__panel {
+  position: sticky;
+  top: 18px;
+  overflow: hidden;
+}
+
+.invoice-template__panel-header,
+.invoice-template__canvas-header {
+  display: flex;
+  align-items: end;
+  justify-content: space-between;
+  gap: 16px;
+}
+
+.invoice-template__panel-header h4,
+.invoice-template__canvas-header h4 {
+  margin: 0;
+}
+
+.invoice-template__panel-note {
+  color: var(--muted);
+  font-size: 0.82rem;
+  text-align: right;
+}
+
+.invoice-template__palette {
+  display: grid;
+  gap: 10px;
+  grid-template-columns: repeat(2, minmax(0, 1fr));
+  min-height: 0;
+  overflow-y: auto;
+  padding-right: 6px;
+  align-content: start;
+  scrollbar-gutter: stable;
+}
+
+.invoice-template__tile {
+  display: grid;
+  gap: 6px;
+  padding: 12px 14px;
+  border: 1px solid rgba(37, 49, 58, 0.1);
+  border-radius: 18px;
+  background: rgba(255, 255, 255, 0.72);
+  text-align: left;
+  cursor: grab;
+  transition: transform 150ms ease, box-shadow 150ms ease, border-color 150ms ease;
+}
+
+.invoice-template__tile:hover {
+  transform: translateY(-1px);
+  box-shadow: 0 18px 36px rgba(54, 44, 27, 0.1);
+  border-color: rgba(17, 109, 99, 0.22);
+}
+
+.invoice-template__tile strong,
+.invoice-template__tile span,
+.invoice-template__tile small {
+  display: block;
+}
+
+.invoice-template__tile span {
+  color: var(--text);
+  font-size: 0.84rem;
+  line-height: 1.3;
+  word-break: break-word;
+}
+
+.invoice-template__tile small {
+  color: var(--muted);
+  font-size: 0.8rem;
+  line-height: 1.5;
+}
+
+.invoice-template__canvas-shell {
+  display: flex;
+  justify-content: center;
+  align-items: flex-start;
+  height: 100%;
+  min-height: 0;
+  overflow: hidden;
+  padding: 0 0 8px;
+  box-sizing: border-box;
+}
+
+.invoice-template__canvas-stage {
+  position: relative;
+  flex: 0 0 auto;
+  overflow: visible;
+}
+
+.invoice-template__canvas {
+  position: relative;
+  width: 794px;
+  min-width: 794px;
+  height: 1123px;
+  border: 1px dashed rgba(17, 109, 99, 0.22);
+  border-radius: 32px;
+  background:
+    linear-gradient(180deg, rgba(17, 109, 99, 0.03), transparent 18%),
+    linear-gradient(transparent 31px, rgba(37, 49, 58, 0.05) 32px),
+    linear-gradient(90deg, transparent 31px, rgba(37, 49, 58, 0.05) 32px),
+    #fffdf9;
+  background-size: auto, 32px 32px, 32px 32px, auto;
+  box-shadow: 0 32px 60px rgba(54, 44, 27, 0.12);
+  overflow: hidden;
+  transform-origin: top left;
+  will-change: transform;
+}
+
+.invoice-template__canvas.is-active {
+  border-color: rgba(17, 109, 99, 0.48);
+  box-shadow: 0 32px 60px rgba(54, 44, 27, 0.12), 0 0 0 6px rgba(17, 109, 99, 0.08);
+}
+
+.invoice-template__canvas::before {
+  content: "";
+  position: absolute;
+  inset: 28px;
+  border: 1px solid rgba(37, 49, 58, 0.05);
+  border-radius: 20px;
+  pointer-events: none;
+}
+
+.invoice-template__canvas-empty {
+  display: grid;
+  place-items: center;
+  height: 100%;
+  padding: 48px;
+  color: var(--muted);
+  text-align: center;
+  line-height: 1.7;
+}
+
+.invoice-template__canvas-element {
+  position: absolute;
+  display: grid;
+  gap: 0;
+  padding: 4px 5px;
+  border: 1px solid transparent;
+  border-radius: 16px;
+  background: transparent;
+  color: var(--text);
+  cursor: move;
+  box-shadow: none;
+  user-select: none;
+}
+
+.invoice-template__canvas-element:hover,
+.invoice-template__canvas-element.is-selected {
+  border-color: rgba(17, 109, 99, 0.28);
+  background: rgba(17, 109, 99, 0.08);
+}
+
+.invoice-template__canvas-element.is-dragging {
+  cursor: grabbing;
+  z-index: 2;
+}
+
+.invoice-template__canvas-element-text {
+  display: block;
+  line-height: 1.35;
+  white-space: pre-wrap;
+  word-break: break-word;
+}
+
+.invoice-template__inspector {
+  display: grid;
+  gap: 12px;
+  min-height: 0;
+  overflow-y: auto;
+  padding-right: 6px;
+  align-content: start;
+  scrollbar-gutter: stable;
+}
+
+.invoice-template__inspector-actions {
+  display: flex;
+  justify-content: flex-end;
+}
+
+.invoice-template-page .field-grid {
+  gap: 12px;
+}
+
+.invoice-template-page .field input,
+.invoice-template-page .field select,
+.invoice-template-page .field textarea {
+  padding: 10px 12px;
+}
+
+.invoice-template-page .field textarea {
+  min-height: 88px;
+}
+
+.dialog-backdrop {
+  position: fixed;
+  inset: 0;
+  display: grid;
+  place-items: center;
+  padding: 28px;
+  background: rgba(29, 36, 40, 0.42);
+  backdrop-filter: blur(8px);
+  z-index: 50;
+}
+
+.dialog {
+  display: grid;
+  gap: 18px;
+  width: min(1120px, 100%);
+  max-height: calc(100vh - 56px);
+  padding: 24px;
+  border: 1px solid rgba(255, 255, 255, 0.42);
+  border-radius: var(--radius-xl);
+  background: rgba(255, 248, 240, 0.96);
+  box-shadow: var(--shadow);
+}
+
+.dialog--wide {
+  width: min(1180px, 100%);
+}
+
+.dialog__header {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 18px;
+}
+
+.dialog__header h4 {
+  margin: 0;
+}
+
+.dialog__actions {
+  display: flex;
+  gap: 12px;
+  flex-wrap: wrap;
+  justify-content: flex-end;
+}
+
+.dialog__actions a {
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  text-decoration: none;
+}
+
+.dialog__body {
+  min-height: 0;
+}
+
+.dialog__body--pdf {
+  height: min(80vh, 900px);
+}
+
+.dialog__frame {
+  width: 100%;
+  height: 100%;
+  border: none;
+  border-radius: 20px;
+  background: white;
+}
+
 @media (max-width: 1200px) {
+  .invoice-template-page,
+  .invoice-template-page__card {
+    height: auto;
+    overflow: visible;
+  }
+
   .app-shell {
     grid-template-columns: 240px minmax(0, 1fr);
   }
@@ -753,10 +1060,25 @@ a {
   .portal-grid,
   .form-grid,
   .field-grid,
-  .metrics-grid {
+  .metrics-grid,
+  .invoice-template {
     grid-template-columns: 1fr;
   }
 
+  .invoice-template__panel {
+    position: static;
+  }
+
+  .invoice-template__palette,
+  .invoice-template__inspector {
+    overflow: visible;
+    padding-right: 0;
+  }
+
+  .invoice-template__palette {
+    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
+  }
+
   .quarter-grid {
     grid-template-columns: repeat(2, minmax(0, 1fr));
   }
@@ -786,4 +1108,27 @@ a {
   .quarter-grid {
     grid-template-columns: 1fr;
   }
+
+  .invoice-template__canvas-shell {
+    margin-inline: 0;
+    padding-inline: 0;
+    overflow: hidden;
+  }
+
+  .dialog-backdrop {
+    padding: 16px;
+  }
+
+  .dialog {
+    padding: 18px;
+  }
+
+  .dialog__header {
+    align-items: flex-start;
+    flex-direction: column;
+  }
+
+  .dialog__body--pdf {
+    height: 72vh;
+  }
 }