Payment details integration

src/backend/app/main.py

@@ -37,11 +37,14 @@ from .services.order_file_service import (
     delete_order_config,
     delete_order_description,
     delete_order_images,
+    delete_order_payment,
     delete_order_templates,
     load_order_config,
+    load_order_payment,
     load_order_templates,
     save_order_config,
     save_order_description,
+    save_order_payment,
     save_order_templates,
     save_uploaded_image,
 )
@@ -128,6 +131,12 @@ class OrderTemplates(BaseModel):
     print: dict[str, Any] = Field(default_factory=dict)
 
 
+class OrderPaymentDetails(BaseModel):
+    """Payment methods shown to participants (validated by the frontend)."""
+    model_config = {"extra": "allow"}
+    methods: list[dict[str, Any]] = Field(default_factory=list)
+
+
 class UserProfileUpdateRequest(BaseModel):
     email: str = Field(min_length=3, max_length=320)
 
@@ -783,6 +792,7 @@ def delete_order(order_id: str, user_id: str = Depends(get_existing_user_id)) ->
     delete_order_description(admin_token)
     delete_order_config(admin_token)
     delete_order_templates(admin_token)
+    delete_order_payment(admin_token)
     delete_order_images(admin_token, order["image_url"])
 
     return {"deleted": True}
@@ -1236,3 +1246,29 @@ def admin_update_order_templates(
     save_order_templates(admin_token, templates_dict)
 
     return templates_dict
+
+
+@app.get("/api/orders/{order_id}/payment")
+def get_order_payment(order_id: str) -> dict[str, Any]:
+    """Get order payment details for participants (public endpoint)."""
+    order = ensure_order_exists(order_id)
+    return load_order_payment(order["admin_token"])
+
+
+@app.put("/api/orders/{order_id}/admin/payment")
+def admin_update_order_payment(
+    order_id: str,
+    payload: OrderPaymentDetails,
+    user_id: str = Depends(get_existing_user_id),
+) -> dict[str, Any]:
+    """Update order payment details."""
+    clean_id = clean_user_id(user_id)
+
+    with get_connection() as conn:
+        auth = ensure_owner_access(conn, clean_id, order_id)
+        admin_token = auth["admin_token"]
+
+    payment_dict = payload.model_dump()
+    save_order_payment(admin_token, payment_dict)
+
+    return payment_dict

src/backend/app/services/order_file_service.py

@@ -11,11 +11,13 @@ IMAGES_DIR = BASE_DIR / "data" / "images"
 CONFIGS_DIR = BASE_DIR / "data" / "configs"
 DESCRIPTIONS_DIR = BASE_DIR / "data" / "descriptions"
 TEMPLATES_DIR = BASE_DIR / "data" / "templates"
+PAYMENTS_DIR = BASE_DIR / "data" / "payments"
 
 IMAGES_DIR.mkdir(parents=True, exist_ok=True)
 CONFIGS_DIR.mkdir(parents=True, exist_ok=True)
 DESCRIPTIONS_DIR.mkdir(parents=True, exist_ok=True)
 TEMPLATES_DIR.mkdir(parents=True, exist_ok=True)
+PAYMENTS_DIR.mkdir(parents=True, exist_ok=True)
 
 
 def load_order_config(admin_token: str) -> dict[str, Any]:
@@ -111,6 +113,37 @@ def delete_order_templates(admin_token: str) -> None:
         pass
 
 
+def load_order_payment(admin_token: str) -> dict[str, Any]:
+    payment_path = PAYMENTS_DIR / f"{admin_token}.json"
+    if not payment_path.exists():
+        return {}
+
+    try:
+        with payment_path.open("r", encoding="utf-8") as file:
+            loaded = json.load(file)
+            return loaded if isinstance(loaded, dict) else {}
+    except Exception:
+        return {}
+
+
+def save_order_payment(admin_token: str, payment: dict[str, Any]) -> None:
+    payment_path = PAYMENTS_DIR / f"{admin_token}.json"
+    try:
+        with payment_path.open("w", encoding="utf-8") as file:
+            json.dump(payment, file, indent=2, ensure_ascii=False)
+    except Exception as exc:
+        raise HTTPException(status_code=500, detail=f"Failed to save payment details: {str(exc)}")
+
+
+def delete_order_payment(admin_token: str) -> None:
+    payment_path = PAYMENTS_DIR / f"{admin_token}.json"
+    try:
+        if payment_path.exists():
+            payment_path.unlink()
+    except Exception:
+        pass
+
+
 def delete_order_images(admin_token: str, image_url: str | None) -> None:
     try:
         if image_url and not image_url.startswith("http"):

src/frontend/src/components/forms/MenuConfigImportExport.tsx

@@ -3,12 +3,13 @@ import { Button, message, Space } from "antd";
 import { ExportOutlined, ImportOutlined } from "@ant-design/icons";
 import type { OrderFormConfig } from "./OrderFormConfigBuilder";
 import ExportSelectionModal, { type ExportSelectionState } from "../modals/ExportSelectionModal";
-import type { OrderTemplates } from "../../lib/types";
+import type { OrderPaymentDetails, OrderTemplates } from "../../lib/types";
 
 type MenuConfigImportExportProps = {
   config?: OrderFormConfig | null;
   description?: string;
   templates?: OrderTemplates | null;
+  payment?: OrderPaymentDetails | null;
   onImportConfig?: (config: OrderFormConfig) => void | Promise<void>;
   showImport?: boolean;
   showExport?: boolean;
@@ -28,6 +29,7 @@ export default function MenuConfigImportExport({
   config,
   description,
   templates,
+  payment,
   onImportConfig,
   showImport = true,
   showExport = true,
@@ -41,6 +43,7 @@ export default function MenuConfigImportExport({
     menu: true,
     description: true,
     templates: true,
+    payment: true,
   });
 
   const handleImportJson = (event: React.ChangeEvent<HTMLInputElement>) => {
@@ -90,7 +93,14 @@ export default function MenuConfigImportExport({
 
   const handleExportJson = () => {
     const exportTemplates = !!templates && exportSelection.templates;
-    if (!exportSelection.title && !exportSelection.menu && !exportSelection.description && !exportTemplates) {
+    const exportPayment = !!payment && exportSelection.payment;
+    if (
+      !exportSelection.title &&
+      !exportSelection.menu &&
+      !exportSelection.description &&
+      !exportTemplates &&
+      !exportPayment
+    ) {
       message.warning("Select at least one section to export");
       return;
     }
@@ -100,6 +110,7 @@ export default function MenuConfigImportExport({
       description?: string;
       menu?: OrderFormConfig;
       templates?: OrderTemplates;
+      payment?: OrderPaymentDetails;
     } = {};
 
     if (exportSelection.title) {
@@ -118,6 +129,10 @@ export default function MenuConfigImportExport({
       payload.templates = templates;
     }
 
+    if (exportPayment) {
+      payload.payment = payment;
+    }
+
     const safeBase = String(fileNameBase || "order")
       .trim()
       .replace(/\s+/g, "-")
@@ -176,6 +191,7 @@ export default function MenuConfigImportExport({
           { key: "menu", label: "Menu" },
           { key: "description", label: "Description" },
           ...(templates ? [{ key: "templates", label: "Templates" }] : []),
+          ...(payment ? [{ key: "payment", label: "Payment details" }] : []),
         ]}
         selected={exportSelection}
         onCancel={() => setIsExportModalOpen(false)}

src/frontend/src/components/forms/OrderTemplatesEditor.tsx

@@ -114,7 +114,7 @@ function PlaceholderHelp({ items }: { items: Array<{ key: string; description: s
   );
 }
 
-function LabelWithPlaceholders({
+export function LabelWithPlaceholders({
   label,
   items,
 }: {

src/frontend/src/components/forms/PaymentDetailsEditor.tsx

@@ -0,0 +1,254 @@
+import React, { useEffect, useMemo, useState } from "react";
+import {
+  ArrowDownOutlined,
+  ArrowUpOutlined,
+  DeleteOutlined,
+  DownOutlined,
+  PlusOutlined,
+  SaveOutlined,
+  UndoOutlined,
+} from "@ant-design/icons";
+import { Alert, Button, Col, Collapse, Dropdown, Empty, Flex, Form, Input, Row, Space, Typography } from "antd";
+import { LabelWithPlaceholders } from "./OrderTemplatesEditor";
+import { PaymentDisclaimer, PaymentMethodDetails } from "../orders/PaymentDetailsCard";
+import {
+  PAYMENT_PROVIDER_LABELS,
+  PAYMENT_REFERENCE_PLACEHOLDERS,
+  createPaymentMethod,
+  getPaymentMethodTitle,
+  isValidIban,
+  type PaymentContext,
+} from "../../lib/paymentDetails";
+import type { OrderPaymentDetails, PaymentMethod, PaymentProviderType } from "../../lib/types";
+
+const { Text } = Typography;
+
+// Previews use a sample participant so the QR code shows a realistic pre-filled amount.
+const SAMPLE_AMOUNT = 12.5;
+const SAMPLE_EMAIL = "jane.doe@example.com";
+
+function MethodFields({
+  method,
+  onChange,
+}: {
+  method: PaymentMethod;
+  onChange: (changes: Partial<PaymentMethod>) => void;
+}) {
+  const ibanInvalid = !!method.iban.trim() && !isValidIban(method.iban);
+
+  return (
+    <>
+      <Form.Item label="Title" required={method.type === "custom"}>
+        <Input
+          value={method.title}
+          placeholder={PAYMENT_PROVIDER_LABELS[method.type]}
+          onChange={(event) => onChange({ title: event.target.value })}
+        />
+      </Form.Item>
+
+      {method.type === "sepa" && (
+        <>
+          <Form.Item label="Account holder" required>
+            <Input value={method.recipient} onChange={(event) => onChange({ recipient: event.target.value })} />
+          </Form.Item>
+          <Row gutter={12}>
+            <Col xs={24} md={16}>
+              <Form.Item
+                label="IBAN"
+                required
+                validateStatus={ibanInvalid ? "warning" : undefined}
+                help={ibanInvalid ? "This IBAN doesn't look valid" : undefined}
+              >
+                <Input value={method.iban} onChange={(event) => onChange({ iban: event.target.value })} />
+              </Form.Item>
+            </Col>
+            <Col xs={24} md={8}>
+              <Form.Item label="BIC (optional)">
+                <Input value={method.bic} onChange={(event) => onChange({ bic: event.target.value })} />
+              </Form.Item>
+            </Col>
+          </Row>
+        </>
+      )}
+
+      {method.type === "paypal" && (
+        <Form.Item label="PayPal.me username" required>
+          <Input
+            addonBefore="paypal.me/"
+            value={method.username}
+            onChange={(event) => onChange({ username: event.target.value })}
+          />
+        </Form.Item>
+      )}
+
+      <Form.Item
+        label={
+          <LabelWithPlaceholders
+            label={method.type === "paypal" ? "Note" : "Reference"}
+            items={PAYMENT_REFERENCE_PLACEHOLDERS}
+          />
+        }
+        extra={method.type === "sepa" ? "Pre-filled as remittance information (max. 140 characters)." : undefined}
+      >
+        <Input
+          value={method.reference}
+          placeholder="Order {date}"
+          onChange={(event) => onChange({ reference: event.target.value })}
+        />
+      </Form.Item>
+
+      <Form.Item label="Description" required={method.type === "custom"}>
+        <Input.TextArea
+          autoSize={{ minRows: 3, maxRows: 12 }}
+          value={method.description}
+          placeholder="You can use markdown to format the description."
+          onChange={(event) => onChange({ description: event.target.value })}
+        />
+      </Form.Item>
+    </>
+  );
+}
+
+export default function PaymentDetailsEditor({
+  payment,
+  previewContext,
+  onSave,
+}: {
+  payment: OrderPaymentDetails;
+  previewContext: Omit<PaymentContext, "amount" | "email">;
+  onSave: (payment: OrderPaymentDetails) => Promise<void>;
+}) {
+  const [draft, setDraft] = useState<OrderPaymentDetails>(payment);
+  const [saving, setSaving] = useState(false);
+  const [activePanels, setActivePanels] = useState<string[]>([]);
+
+  useEffect(() => {
+    setDraft(payment);
+  }, [payment]);
+
+  const isDirty = useMemo(() => JSON.stringify(draft) !== JSON.stringify(payment), [draft, payment]);
+  const sampleContext: PaymentContext = { ...previewContext, email: SAMPLE_EMAIL, amount: SAMPLE_AMOUNT };
+
+  const setMethods = (update: (methods: PaymentMethod[]) => PaymentMethod[]) =>
+    setDraft((previous) => ({ ...previous, methods: update(previous.methods) }));
+  const updateMethod = (id: string, changes: Partial<PaymentMethod>) =>
+    setMethods((methods) => methods.map((method) => (method.id === id ? { ...method, ...changes } : method)));
+  const moveMethod = (index: number, offset: number) =>
+    setMethods((methods) => {
+      const next = [...methods];
+      const [moved] = next.splice(index, 1);
+      next.splice(index + offset, 0, moved);
+      return next;
+    });
+  const addMethod = (type: PaymentProviderType) => {
+    const method = createPaymentMethod(type);
+    setMethods((methods) => [...methods, method]);
+    setActivePanels((previous) => [...previous, method.id]);
+  };
+
+  const handleSave = async () => {
+    setSaving(true);
+    try {
+      await onSave(draft);
+    } finally {
+      setSaving(false);
+    }
+  };
+
+  return (
+    <Form layout="vertical">
+      <Space direction="vertical" size={16} style={{ width: "100%" }}>
+        <Alert
+          type="info"
+          showIcon
+          message="Payment methods are shown to participants next to the order description. SEPA and PayPal methods get a QR code pre-filled with the participant's estimated total and the reference."
+        />
+
+        {draft.methods.length === 0 ? (
+          <Empty image={Empty.PRESENTED_IMAGE_SIMPLE} description="No payment methods configured" />
+        ) : (
+          <Collapse
+            activeKey={activePanels}
+            onChange={(keys) => setActivePanels(Array.isArray(keys) ? keys : [keys])}
+            items={draft.methods.map((method, index) => ({
+              key: method.id,
+              label: (
+                <Space size={8}>
+                  {getPaymentMethodTitle(method)}
+                  {method.title.trim() && method.type !== "custom" && (
+                    <Text type="secondary">{PAYMENT_PROVIDER_LABELS[method.type]}</Text>
+                  )}
+                </Space>
+              ),
+              extra: (
+                <Space size={0} onClick={(event) => event.stopPropagation()}>
+                  <Button
+                    type="text"
+                    size="small"
+                    icon={<ArrowUpOutlined />}
+                    disabled={index === 0}
+                    onClick={() => moveMethod(index, -1)}
+                  />
+                  <Button
+                    type="text"
+                    size="small"
+                    icon={<ArrowDownOutlined />}
+                    disabled={index === draft.methods.length - 1}
+                    onClick={() => moveMethod(index, 1)}
+                  />
+                  <Button
+                    type="text"
+                    size="small"
+                    danger
+                    icon={<DeleteOutlined />}
+                    onClick={() => setMethods((methods) => methods.filter((entry) => entry.id !== method.id))}
+                  />
+                </Space>
+              ),
+              children: (
+                <Row gutter={24}>
+                  <Col xs={24} lg={14}>
+                    <MethodFields method={method} onChange={(changes) => updateMethod(method.id, changes)} />
+                  </Col>
+                  <Col xs={24} lg={10}>
+                    <Text type="secondary" style={{ display: "block", marginBottom: 8 }}>
+                      Preview for a participant with an estimated total of €{SAMPLE_AMOUNT.toFixed(2)}
+                    </Text>
+                    <Space direction="vertical" size={8} style={{ width: "100%" }}>
+                      <PaymentMethodDetails method={method} context={sampleContext} />
+                      <PaymentDisclaimer />
+                    </Space>
+                  </Col>
+                </Row>
+              ),
+            }))}
+          />
+        )}
+
+        <Flex justify="space-between" wrap="wrap" gap={8}>
+          <Dropdown
+            menu={{
+              items: (Object.keys(PAYMENT_PROVIDER_LABELS) as PaymentProviderType[]).map((type) => ({
+                key: type,
+                label: PAYMENT_PROVIDER_LABELS[type],
+              })),
+              onClick: ({ key }) => addMethod(key as PaymentProviderType),
+            }}
+          >
+            <Button icon={<PlusOutlined />}>
+              Add payment method <DownOutlined />
+            </Button>
+          </Dropdown>
+          <Space>
+            <Button icon={<UndoOutlined />} disabled={!isDirty || saving} onClick={() => setDraft(payment)}>
+              Reset
+            </Button>
+            <Button type="primary" icon={<SaveOutlined />} disabled={!isDirty} loading={saving} onClick={handleSave}>
+              Save payment details
+            </Button>
+          </Space>
+        </Flex>
+      </Space>
+    </Form>
+  );
+}

src/frontend/src/components/orders/PaymentDetailsCard.tsx

@@ -0,0 +1,186 @@
+import React from "react";
+import { Button, Card, Collapse, Empty, Flex, QRCode, Space, Typography, theme } from "antd";
+import { ExportOutlined, InfoCircleOutlined } from "@ant-design/icons";
+import { markdownToHtml } from "../../lib/markdown";
+import {
+  PAYMENT_ESTIMATE_DISCLAIMER,
+  PAYMENT_PROVIDER_LABELS,
+  buildPaymentQrValue,
+  buildPaypalUrl,
+  cleanIban,
+  cleanPaypalUsername,
+  formatAmount,
+  formatIban,
+  getPaymentMethodTitle,
+  renderPaymentReference,
+  type PaymentContext,
+} from "../../lib/paymentDetails";
+import type { OrderPaymentDetails, PaymentMethod } from "../../lib/types";
+
+const { Text } = Typography;
+
+const hintStyle: React.CSSProperties = { fontSize: 12, lineHeight: 1.4 };
+
+// Label above value, so long custom values wrap within their own block instead of around the label.
+function DetailLine({ label, value, copyValue }: { label: string; value: string; copyValue?: string }) {
+  if (!value) {
+    return null;
+  }
+
+  return (
+    <Flex vertical>
+      <Text type="secondary" style={hintStyle}>
+        {label}
+      </Text>
+      <Text copyable={{ text: copyValue ?? value }} style={{ overflowWrap: "anywhere" }}>
+        {value}
+      </Text>
+    </Flex>
+  );
+}
+
+export function PaymentDisclaimer() {
+  return (
+    <Text type="secondary" style={{ ...hintStyle, display: "block" }} ellipsis={{ tooltip: PAYMENT_ESTIMATE_DISCLAIMER }}>
+      <InfoCircleOutlined /> {PAYMENT_ESTIMATE_DISCLAIMER}
+    </Text>
+  );
+}
+
+export function PaymentMethodDetails({ method, context }: { method: PaymentMethod; context: PaymentContext }) {
+  const qrValue = buildPaymentQrValue(method, context);
+  const reference = renderPaymentReference(method.reference, context);
+  const amount = context.amount !== null && context.amount > 0 ? `€${formatAmount(context.amount)}` : "";
+  const paypalUrl = method.type === "paypal" ? buildPaypalUrl(method.username, context.amount) : "";
+
+  return (
+    <Space direction="vertical" style={{ width: "100%" }} size={12}>
+      <Flex gap={16} wrap="wrap" align="flex-start" justify="center">
+        {qrValue && (
+          // Fixed black-on-white so banking apps can scan it in dark mode too.
+          <QRCode value={qrValue} errorLevel="M" size={168} color="#000000" bgColor="#ffffff" />
+        )}
+        <Space direction="vertical" size={8} style={{ flex: "1 1 180px", minWidth: 0 }}>
+          {method.type === "sepa" && (
+            <>
+              <DetailLine label="Recipient" value={method.recipient.trim()} />
+              <DetailLine label="IBAN" value={formatIban(method.iban)} copyValue={cleanIban(method.iban)} />
+              <DetailLine label="BIC" value={method.bic.trim()} />
+            </>
+          )}
+          {method.type === "paypal" && (
+            <DetailLine label="PayPal" value={cleanPaypalUsername(method.username)} copyValue={paypalUrl} />
+          )}
+          <DetailLine label="Amount" value={amount} copyValue={formatAmount(context.amount)} />
+          <DetailLine label={method.type === "paypal" ? "Note" : "Reference"} value={reference} />
+          {method.type === "sepa" && qrValue && (
+            <Text type="secondary" style={hintStyle}>
+              Scan the code with your banking app to pre-fill the transfer.
+            </Text>
+          )}
+          {paypalUrl && (
+            <Space direction="vertical" size={4}>
+              {reference && (
+                <Text type="secondary" style={hintStyle}>
+                  PayPal links can't carry a note, please add the note above manually.
+                </Text>
+              )}
+              <Button size="small" icon={<ExportOutlined />} href={paypalUrl} target="_blank" rel="noopener noreferrer">
+                Open PayPal
+              </Button>
+            </Space>
+          )}
+        </Space>
+      </Flex>
+
+      {!!method.description.trim() && (
+        <Typography.Paragraph style={{ marginBottom: 0, overflowWrap: "anywhere" }}>
+          <span dangerouslySetInnerHTML={{ __html: markdownToHtml(method.description) }} />
+        </Typography.Paragraph>
+      )}
+    </Space>
+  );
+}
+
+// Custom titles can be long: keep the header to one ellipsized line plus the provider underneath.
+function PaymentMethodLabel({ method }: { method: PaymentMethod }) {
+  const title = getPaymentMethodTitle(method);
+  const showProvider = !!method.title.trim() && method.type !== "custom";
+
+  return (
+    <Flex vertical style={{ minWidth: 0 }}>
+      <Text strong ellipsis={{ tooltip: title }}>
+        {title}
+      </Text>
+      {showProvider && (
+        <Text type="secondary" style={hintStyle} ellipsis>
+          {PAYMENT_PROVIDER_LABELS[method.type]}
+        </Text>
+      )}
+    </Flex>
+  );
+}
+
+// "embedded" drops the accordion's own frame so it can share the border of a padding-less card.
+export function PaymentMethodsAccordion({
+  methods,
+  context,
+  embedded = false,
+}: {
+  methods: PaymentMethod[];
+  context: PaymentContext;
+  embedded?: boolean;
+}) {
+  const { token } = theme.useToken();
+  const accordion = (
+    <Collapse
+      accordion
+      bordered={!embedded}
+      style={embedded ? { background: "transparent", borderRadius: 0 } : undefined}
+      defaultActiveKey={methods[0]?.id}
+      items={methods.map((method) => ({
+        key: method.id,
+        label: <PaymentMethodLabel method={method} />,
+        children: <PaymentMethodDetails method={method} context={context} />,
+      }))}
+    />
+  );
+
+  if (embedded) {
+    return (
+      <>
+        {accordion}
+        <div style={{ padding: "8px 16px", borderTop: `1px solid ${token.colorBorder}` }}>
+          <PaymentDisclaimer />
+        </div>
+      </>
+    );
+  }
+
+  return (
+    <Space direction="vertical" size={8} style={{ width: "100%" }}>
+      {accordion}
+      <PaymentDisclaimer />
+    </Space>
+  );
+}
+
+export default function PaymentDetailsCard({
+  payment,
+  context,
+  style,
+}: {
+  payment: OrderPaymentDetails;
+  context: PaymentContext;
+  style?: React.CSSProperties;
+}) {
+  return (
+    <Card title="Payment" style={style} styles={{ body: payment.methods.length > 0 ? { padding: 0 } : undefined }}>
+      {payment.methods.length > 0 ? (
+        <PaymentMethodsAccordion methods={payment.methods} context={context} embedded />
+      ) : (
+        <Empty image={Empty.PRESENTED_IMAGE_SIMPLE} description="No payment details provided" />
+      )}
+    </Card>
+  );
+}

src/frontend/src/components/orders/ReadOnlyOrderOverviewCard.tsx

@@ -1,13 +1,21 @@
 import React from "react";
 import { Card, Col, Empty, Flex, Image, Row, Space, Tabs, Typography } from "antd";
+import type { TabsProps } from "antd";
+import {
+  FileTextOutlined,
+  SnippetsOutlined,
+  UnorderedListOutlined,
+  WalletOutlined,
+} from "@ant-design/icons";
 import { markdownToHtml } from "../../lib/markdown";
 import MenuConfigImportExport from "../forms/MenuConfigImportExport";
 import OrderFormConfigBuilder, {
   OrderFormConfig,
 } from "../forms/OrderFormConfigBuilder";
 import OrderTemplatesEditor from "../forms/OrderTemplatesEditor";
+import PaymentDetailsEditor from "../forms/PaymentDetailsEditor";
 import type { TemplateContext } from "../../lib/orderTemplating";
-import type { OrderTemplates } from "../../lib/types";
+import type { OrderPaymentDetails, OrderTemplates } from "../../lib/types";
 
 type Order = {
   id?: string;
@@ -51,6 +59,12 @@ export default function ReadOnlyOrderOverviewCard({
   templates,
   templatePreviewContext,
   onSaveTemplates,
+  payment,
+  onSavePayment,
+  extraTabs = [],
+  activeTabKey,
+  onTabChange,
+  id,
 }: {
   order: Order | null;
   config?: OrderFormConfig | null;
@@ -58,6 +72,12 @@ export default function ReadOnlyOrderOverviewCard({
   templates?: OrderTemplates | null;
   templatePreviewContext?: TemplateContext | null;
   onSaveTemplates?: (templates: OrderTemplates) => Promise<void>;
+  payment?: OrderPaymentDetails | null;
+  onSavePayment?: (payment: OrderPaymentDetails) => Promise<void>;
+  extraTabs?: NonNullable<TabsProps["items"]>;
+  activeTabKey?: string;
+  onTabChange?: (key: string) => void;
+  id?: string;
 }) {
   if (!order) {
     return null;
@@ -73,6 +93,7 @@ export default function ReadOnlyOrderOverviewCard({
 
   return (
     <Card
+      id={id}
       title={
         <Flex vertical gap={0}>
           {order.title}
@@ -87,6 +108,7 @@ export default function ReadOnlyOrderOverviewCard({
           config={currentConfig}
           description={currentDescription}
           templates={templates}
+          payment={payment}
           showImport={false}
           onImportConfig={onImportConfig}
           fileNameBase={order.title || "order"}
@@ -95,10 +117,13 @@ export default function ReadOnlyOrderOverviewCard({
     >
       <Tabs
         defaultActiveKey="description"
+        activeKey={activeTabKey}
+        onChange={onTabChange}
         items={[
           {
             key: "description",
             label: "Description",
+            icon: <FileTextOutlined />,
             children: (
               <Row gutter={16}>
                 <Col xs={24} md={order.image_url ? 14 : 24}>
@@ -147,6 +172,7 @@ export default function ReadOnlyOrderOverviewCard({
           {
             key: "menu",
             label: "Menu",
+            icon: <UnorderedListOutlined />,
             children: (
               <OrderFormConfigBuilder
                 editable={false}
@@ -163,6 +189,7 @@ export default function ReadOnlyOrderOverviewCard({
                 {
                   key: "templates",
                   label: "Templates",
+                  icon: <SnippetsOutlined />,
                   children: (
                     <OrderTemplatesEditor
                       templates={templates}
@@ -174,6 +201,23 @@ export default function ReadOnlyOrderOverviewCard({
                 },
               ]
             : []),
+          ...(payment && onSavePayment
+            ? [
+                {
+                  key: "payment",
+                  label: "Payment",
+                  icon: <WalletOutlined />,
+                  children: (
+                    <PaymentDetailsEditor
+                      payment={payment}
+                      previewContext={{ title: order.title || "", orderDate: order.created_at || null }}
+                      onSave={onSavePayment}
+                    />
+                  ),
+                },
+              ]
+            : []),
+          ...extraTabs,
         ]}
       ></Tabs>
     </Card>

src/frontend/src/hooks/useMediaQuery.ts

@@ -0,0 +1,14 @@
+import { useCallback, useSyncExternalStore } from "react";
+
+export function useMediaQuery(query: string): boolean {
+  const subscribe = useCallback(
+    (onChange: () => void) => {
+      const mediaQuery = window.matchMedia(query);
+      mediaQuery.addEventListener("change", onChange);
+      return () => mediaQuery.removeEventListener("change", onChange);
+    },
+    [query],
+  );
+
+  return useSyncExternalStore(subscribe, () => window.matchMedia(query).matches);
+}

src/frontend/src/lib/paymentDetails.ts

@@ -0,0 +1,178 @@
+import type { OrderPaymentDetails, PaymentMethod, PaymentProviderType } from "./types";
+
+export const PAYMENT_PROVIDER_LABELS: Record<PaymentProviderType, string> = {
+  sepa: "SEPA bank transfer",
+  paypal: "PayPal",
+  custom: "Custom",
+};
+
+export const DEFAULT_PAYMENT_REFERENCE = "{title} {date}";
+
+export const PAYMENT_REFERENCE_PLACEHOLDERS = [
+  { key: "{title}", description: "Order title" },
+  { key: "{date}", description: "Date the order was created" },
+  { key: "{email}", description: "Participant's email (empty if unknown)" },
+  { key: "{total}", description: "Participant's estimated total, e.g. 12.50" },
+];
+
+export const PAYMENT_ESTIMATE_DISCLAIMER =
+  "All amounts are non-binding estimates based on the listed menu prices. Errors and omissions excepted; " +
+  "the final amount may differ and remains subject to change, e.g. due to pricing errors, substitutions or fees.";
+
+// EPC QR codes (GiroCode) limit these fields; longer values make the code unreadable for banking apps.
+const EPC_NAME_MAX = 70;
+const EPC_REMITTANCE_MAX = 140;
+
+export type PaymentContext = {
+  title: string;
+  orderDate: string | null;
+  email: string | null;
+  amount: number | null;
+};
+
+const PROVIDER_TYPES = Object.keys(PAYMENT_PROVIDER_LABELS) as PaymentProviderType[];
+
+function asString(value: unknown): string {
+  return typeof value === "string" ? value : "";
+}
+
+export function createPaymentMethod(type: PaymentProviderType): PaymentMethod {
+  return {
+    id: `${type}-${Date.now().toString(36)}-${Math.random().toString(36).slice(2, 7)}`,
+    type,
+    title: "",
+    recipient: "",
+    iban: "",
+    bic: "",
+    username: "",
+    reference: type === "custom" ? "" : DEFAULT_PAYMENT_REFERENCE,
+    description: "",
+  };
+}
+
+export function normalizePaymentDetails(raw: unknown): OrderPaymentDetails {
+  const rawMethods = (raw as { methods?: unknown } | null)?.methods;
+  const methods = (Array.isArray(rawMethods) ? rawMethods : [])
+    .filter((entry): entry is Record<string, unknown> => !!entry && typeof entry === "object")
+    .filter((entry) => PROVIDER_TYPES.includes(entry.type as PaymentProviderType))
+    .map((entry) => {
+      const base = createPaymentMethod(entry.type as PaymentProviderType);
+      return {
+        ...base,
+        id: asString(entry.id) || base.id,
+        title: asString(entry.title),
+        recipient: asString(entry.recipient),
+        iban: asString(entry.iban),
+        bic: asString(entry.bic),
+        username: asString(entry.username),
+        reference: typeof entry.reference === "string" ? entry.reference : base.reference,
+        description: asString(entry.description),
+      };
+    });
+
+  return { methods };
+}
+
+export function getPaymentMethodTitle(method: PaymentMethod): string {
+  return method.title.trim() || PAYMENT_PROVIDER_LABELS[method.type];
+}
+
+export function formatAmount(amount: number | null): string {
+  return amount === null ? "" : amount.toFixed(2);
+}
+
+function formatOrderDate(value: string | null): string {
+  const date = value ? new Date(value) : new Date();
+  return Number.isNaN(date.getTime()) ? String(value) : date.toLocaleDateString();
+}
+
+export function renderPaymentReference(template: string, context: PaymentContext): string {
+  return template
+    .replace(/\{([a-z_]+)\}/gi, (match, key: string) => {
+      switch (key.toLowerCase()) {
+        case "title": return context.title;
+        case "date": return formatOrderDate(context.orderDate);
+        case "email": return context.email || "";
+        case "total": return formatAmount(context.amount);
+        default: return match;
+      }
+    })
+    .replace(/\s+/g, " ")
+    .trim();
+}
+
+export function cleanIban(iban: string): string {
+  return iban.replace(/\s+/g, "").toUpperCase();
+}
+
+export function formatIban(iban: string): string {
+  return cleanIban(iban).replace(/(.{4})/g, "$1 ").trim();
+}
+
+export function isValidIban(iban: string): boolean {
+  const clean = cleanIban(iban);
+  if (!/^[A-Z]{2}\d{2}[A-Z0-9]{10,30}$/.test(clean)) {
+    return false;
+  }
+
+  // ISO 13616 mod-97 check, computed in chunks to stay within number precision.
+  const rearranged = clean.slice(4) + clean.slice(0, 4);
+  const digits = rearranged.replace(/[A-Z]/g, (letter) => String(letter.charCodeAt(0) - 55));
+  let remainder = 0;
+  for (let i = 0; i < digits.length; i += 7) {
+    remainder = Number(String(remainder) + digits.slice(i, i + 7)) % 97;
+  }
+  return remainder === 1;
+}
+
+export function cleanPaypalUsername(username: string): string {
+  return username
+    .trim()
+    .replace(/^https?:\/\//i, "")
+    .replace(/^(www\.)?(paypal\.me|paypal\.com\/paypalme)\//i, "")
+    .replace(/^@/, "")
+    .replace(/\/.*$/, "");
+}
+
+export function buildPaypalUrl(username: string, amount: number | null): string {
+  const clean = cleanPaypalUsername(username);
+  if (!clean) {
+    return "";
+  }
+
+  const amountPart = amount !== null && amount > 0 ? `/${formatAmount(amount)}EUR` : "";
+  return `https://paypal.me/${encodeURIComponent(clean)}${amountPart}`;
+}
+
+// EPC069-12 "BCD" payload, understood by most European banking apps (GiroCode / SEPA QR).
+export function buildEpcPayload(method: PaymentMethod, reference: string, amount: number | null): string {
+  const iban = cleanIban(method.iban);
+  const recipient = method.recipient.trim();
+  if (!iban || !recipient) {
+    return "";
+  }
+
+  const lines = [
+    "BCD",
+    "002",
+    "1",
+    "SCT",
+    method.bic.replace(/\s+/g, "").toUpperCase(),
+    recipient.slice(0, EPC_NAME_MAX),
+    iban,
+    amount !== null && amount > 0 ? `EUR${formatAmount(amount)}` : "",
+    "",
+    "",
+    reference.slice(0, EPC_REMITTANCE_MAX),
+  ];
+  return lines.join("\n").replace(/\n+$/, "");
+}
+
+export function buildPaymentQrValue(method: PaymentMethod, context: PaymentContext): string {
+  const reference = renderPaymentReference(method.reference, context);
+  switch (method.type) {
+    case "sepa": return buildEpcPayload(method, reference, context.amount);
+    case "paypal": return buildPaypalUrl(method.username, context.amount);
+    default: return "";
+  }
+}

src/frontend/src/lib/services/ordersService.ts

@@ -3,6 +3,7 @@ import type {
   Order,
   OrderFormConfig,
   OrderTemplates,
+  OrderPaymentDetails,
   GetAdminViewResponse,
   OrderAccessInfo,
   GetOrdersResponse,
@@ -66,6 +67,13 @@ export const ordersService = {
       method: "PUT",
       body: JSON.stringify(templates),
     }),
+  getPayment: (orderId: string) =>
+    apiFetch<Partial<OrderPaymentDetails>>(`/api/orders/${orderId}/payment`),
+  updatePayment: (orderId: string, payment: OrderPaymentDetails) =>
+    apiFetch<OrderPaymentDetails>(`/api/orders/${orderId}/admin/payment`, {
+      method: "PUT",
+      body: JSON.stringify(payment),
+    }),
   uploadImage: (orderId: string, file: File) => {
     const formData = new FormData();
     formData.append("file", file);

src/frontend/src/lib/types.ts

@@ -123,6 +123,27 @@ export type OrderTemplates = {
   print: PrintTemplateSettings;
 };
 
+/* ==================== Payment Details ==================== */
+
+export type PaymentProviderType = "sepa" | "paypal" | "custom";
+
+// One flat shape for all providers; fields that don't apply to a provider are ignored.
+export type PaymentMethod = {
+  id: string;
+  type: PaymentProviderType;
+  title: string;
+  recipient: string;
+  iban: string;
+  bic: string;
+  username: string;
+  reference: string;
+  description: string;
+};
+
+export type OrderPaymentDetails = {
+  methods: PaymentMethod[];
+};
+
 export type OrderBase = {
   id: string;
   admin_token: string;

src/frontend/src/views/AdminView.tsx

@@ -13,6 +13,7 @@ import type {
   GetAdminViewResponse,
   Order,
   OrderFormConfig,
+  OrderPaymentDetails,
   OrderTemplates,
   Submission,
   SubmissionSortBy,
@@ -32,6 +33,7 @@ import {
   type PrintTable,
   type TemplateContext,
 } from "../lib/orderTemplating";
+import { normalizePaymentDetails } from "../lib/paymentDetails";
 import AdminParticipantShareAlert from "../components/views/AdminParticipantShareAlert";
 import AdminSubmissionsCard from "../components/views/AdminSubmissionsCard";
 import AdminControlCenterCard from "../components/views/AdminControlCenterCard";
@@ -42,6 +44,7 @@ type AdminViewData = Order & {
   submissions: Submission[];
   config: OrderFormConfig;
   templates: OrderTemplates;
+  payment: OrderPaymentDetails;
   creator_email?: string | null;
 };
 
@@ -68,10 +71,11 @@ export default function AdminView({ orderId }: { orderId: string }) {
 
   const loadAdminData = useCallback(
     async (): Promise<AdminViewData> => {
-      const [adminPayload, configPayload, templatesPayload] = await Promise.all([
+      const [adminPayload, configPayload, templatesPayload, paymentPayload] = await Promise.all([
         apiService.orders.getAdminView(orderId),
         apiService.orders.getConfig(orderId).catch(() => ({ categories: [] })),
         apiService.orders.getTemplates(orderId).catch(() => null),
+        apiService.orders.getPayment(orderId).catch(() => null),
       ]);
 
       const typedPayload = adminPayload as GetAdminViewResponse;
@@ -88,6 +92,7 @@ export default function AdminView({ orderId }: { orderId: string }) {
             : [],
         },
         templates: normalizeOrderTemplates(templatesPayload),
+        payment: normalizePaymentDetails(paymentPayload),
       };
     },
     [orderId],
@@ -240,6 +245,18 @@ export default function AdminView({ orderId }: { orderId: string }) {
     }
   };
 
+  const handleSavePayment = async (nextPayment: OrderPaymentDetails) => {
+    try {
+      const saved = await apiService.orders.updatePayment(orderId, nextPayment);
+      setData((previous: AdminViewData | null) =>
+        previous ? { ...previous, payment: normalizePaymentDetails(saved) } : previous,
+      );
+      message.success("Payment details saved");
+    } catch (error: any) {
+      message.error(error.message);
+    }
+  };
+
   const refreshSubmissions = useCallback(async () => {
     try {
       const adminPayload = await apiService.orders.getAdminView(orderId);
@@ -387,6 +404,8 @@ export default function AdminView({ orderId }: { orderId: string }) {
         templates={data?.templates}
         templatePreviewContext={templateContext}
         onSaveTemplates={handleSaveTemplates}
+        payment={data?.payment}
+        onSavePayment={handleSavePayment}
       />
 
       <AdminControlCenterCard

src/frontend/src/views/CreateOrderView.tsx

@@ -20,8 +20,9 @@ import type { UploadFile, UploadProps } from "antd";
 import { apiService } from "../lib/services";
 import { navigateTo } from "../lib/routing";
 import { ORDER_FORMAT_VALUE_PLACEHOLDER } from "../lib/orderFormatting";
-import type { OrderFormConfig, OrderTemplates } from "../lib/types";
+import type { OrderFormConfig, OrderPaymentDetails, OrderTemplates } from "../lib/types";
 import { normalizeOrderTemplates } from "../lib/orderTemplating";
+import { normalizePaymentDetails } from "../lib/paymentDetails";
 import OrderFormConfigBuilder from "../components/forms/OrderFormConfigBuilder";
 import CreateOrderHeaderActions from "../components/views/CreateOrderHeaderActions";
 import ExportSelectionModal, { type ExportSelectionState } from "../components/modals/ExportSelectionModal";
@@ -132,12 +133,14 @@ export default function CreateOrderView() {
   const [formConfig, setFormConfig] = useState<OrderFormConfig>(DEFAULT_CONFIG);
   // Templates are edited in the admin view; here they are only carried over from an import.
   const [importedTemplates, setImportedTemplates] = useState<OrderTemplates | null>(null);
+  const [importedPayment, setImportedPayment] = useState<OrderPaymentDetails | null>(null);
   const [isExportModalOpen, setIsExportModalOpen] = useState(false);
   const [exportOptions, setExportOptions] = useState<ExportSelectionState>({
     title: true,
     description: true,
     menu: true,
     templates: true,
+    payment: true,
   });
   const importFileInputRef = useRef<HTMLInputElement>(null);
 
@@ -227,9 +230,20 @@ export default function CreateOrderView() {
         }
       }
 
+      if (importedPayment) {
+        try {
+          await apiService.orders.updatePayment(order.id, importedPayment);
+        } catch (error: any) {
+          message.warning(
+            "Order created but payment details save failed: " + error.message,
+          );
+        }
+      }
+
       setImageFileList([]);
       setFormConfig(DEFAULT_CONFIG);
       setImportedTemplates(null);
+      setImportedPayment(null);
 
       navigateTo(`/order/${order.id}/admin`);
     } catch (error: any) {
@@ -290,6 +304,7 @@ export default function CreateOrderView() {
           description?: unknown;
           menu?: unknown;
           templates?: unknown;
+          payment?: unknown;
         };
 
         const importedSections: string[] = [];
@@ -323,6 +338,11 @@ export default function CreateOrderView() {
           importedSections.push("templates");
         }
 
+        if (Object.prototype.hasOwnProperty.call(parsed, "payment")) {
+          setImportedPayment(normalizePaymentDetails(parsed.payment));
+          importedSections.push("payment details");
+        }
+
         if (importedSections.length === 0) {
           message.warning("No supported sections found in import file");
           return;
@@ -347,6 +367,7 @@ export default function CreateOrderView() {
       description?: string;
       menu?: OrderFormConfig;
       templates?: OrderTemplates;
+      payment?: OrderPaymentDetails;
     } = {};
 
     if (exportOptions.title) {
@@ -365,6 +386,10 @@ export default function CreateOrderView() {
       payload.templates = importedTemplates;
     }
 
+    if (importedPayment && exportOptions.payment) {
+      payload.payment = importedPayment;
+    }
+
     if (Object.keys(payload).length === 0) {
       message.warning("Select at least one section to export");
       return;
@@ -511,6 +536,7 @@ export default function CreateOrderView() {
           { key: "description", label: "Description" },
           { key: "menu", label: "Menu" },
           ...(importedTemplates ? [{ key: "templates", label: "Templates" }] : []),
+          ...(importedPayment ? [{ key: "payment", label: "Payment details" }] : []),
         ]}
         selected={exportOptions}
         onCancel={() => setIsExportModalOpen(false)}

src/frontend/src/views/ParticipantView.tsx

@@ -1,5 +1,5 @@
 import React, { useCallback, useEffect, useMemo, useState } from "react";
-import { DeleteOutlined, SaveOutlined } from "@ant-design/icons";
+import { DeleteOutlined, SaveOutlined, WalletOutlined } from "@ant-design/icons";
 import {
   Alert,
   Button,
@@ -19,6 +19,9 @@ import { navigateTo } from "../lib/routing";
 import { apiService } from "../lib/services";
 import LoadingSkeleton from "../components/utils/LoadingSkeleton";
 import ReadOnlyOrderOverviewCard from "../components/orders/ReadOnlyOrderOverviewCard";
+import PaymentDetailsCard, { PaymentMethodsAccordion } from "../components/orders/PaymentDetailsCard";
+import { normalizePaymentDetails, type PaymentContext } from "../lib/paymentDetails";
+import { useMediaQuery } from "../hooks/useMediaQuery";
 import {
   buildFormattedOrderString,
   calculateEstimatedOrderTotal,
@@ -30,6 +33,7 @@ import type {
   OrderFormConfig,
   Order,
   OrderAccessInfo,
+  OrderPaymentDetails,
   Submission,
 } from "../lib/types";
 import ParticipantCategoryFields from "../components/views/ParticipantCategoryFields";
@@ -38,6 +42,13 @@ import ParticipantDraftSummaryAlert from "../components/views/ParticipantDraftSu
 
 const { Text, Link } = Typography;
 
+// The main column is 980px wide and centered; the payment sidebar only attaches
+// to its right edge when the gutter can hold it, otherwise it becomes a tab.
+const PAYMENT_SIDEBAR_WIDTH = 320;
+const PAYMENT_SIDEBAR_GAP = 16;
+const PAYMENT_SIDEBAR_QUERY = "(min-width: 1700px)";
+const OVERVIEW_CARD_ID = "order-overview";
+
 type SubmissionValues = {
   choices: NormalizedOrderSelections;
 };
@@ -79,6 +90,7 @@ function toFormValues(
 type ParticipantLoadData = {
   order: Order;
   config: OrderFormConfig;
+  payment: OrderPaymentDetails;
 };
 
 export default function ParticipantView({ orderId }: { orderId: string }) {
@@ -94,12 +106,13 @@ export default function ParticipantView({ orderId }: { orderId: string }) {
 
   const loadParticipantData =
     useCallback(async (): Promise<ParticipantLoadData> => {
-      const [order, config] = await Promise.all([
+      const [order, config, payment] = await Promise.all([
         apiService.orders.get(orderId),
         apiService.orders.getConfig(orderId).catch(() => ({ categories: [] })),
+        apiService.orders.getPayment(orderId).catch(() => null),
       ]);
 
-      return { order, config };
+      return { order, config, payment: normalizePaymentDetails(payment) };
     }, [orderId]);
 
   const {
@@ -167,13 +180,14 @@ export default function ParticipantView({ orderId }: { orderId: string }) {
     () => buildFormattedOrderString(normalizedSavedValues, config),
     [normalizedSavedValues, config],
   );
-  const savedEstimatedTotal = useMemo(
-    () =>
-      formatEstimatedTotal(
-        calculateEstimatedOrderTotal(normalizedSavedValues, config),
-      ),
+  const savedEstimatedAmount = useMemo(
+    () => calculateEstimatedOrderTotal(normalizedSavedValues, config),
     [normalizedSavedValues, config],
   );
+  const savedEstimatedTotal = formatEstimatedTotal(savedEstimatedAmount);
+  const paymentMethods = data?.payment.methods || [];
+  const showPaymentSidebar = useMediaQuery(PAYMENT_SIDEBAR_QUERY);
+  const [overviewTab, setOverviewTab] = useState("description");
   const hasActiveChanges =
     !!existingSubmission &&
     serializeSelections(normalizedDraftValues) !==
@@ -400,6 +414,34 @@ export default function ParticipantView({ orderId }: { orderId: string }) {
     return <LoadingSkeleton rows={5} sections={2} />;
   }
 
+  const paymentContext: PaymentContext = {
+    title: liveOrder?.title || "",
+    orderDate: liveOrder?.created_at || null,
+    email: existingSubmission?.email || null,
+    amount: existingSubmission ? savedEstimatedAmount : null,
+  };
+  const hasPayment = paymentMethods.length > 0;
+  const paymentTabs =
+    hasPayment && !showPaymentSidebar
+      ? [
+          {
+            key: "payment",
+            label: "Payment",
+            icon: <WalletOutlined />,
+            children: <PaymentMethodsAccordion methods={paymentMethods} context={paymentContext} />,
+          },
+        ]
+      : [];
+  // The payment tab disappears when the sidebar takes over; fall back to the description.
+  const activeOverviewTab =
+    overviewTab === "payment" && paymentTabs.length === 0 ? "description" : overviewTab;
+  const showPaymentPrompt = hasPayment && !showPaymentSidebar && !!existingSubmission;
+
+  const openPaymentTab = () => {
+    setOverviewTab("payment");
+    document.getElementById(OVERVIEW_CARD_ID)?.scrollIntoView({ behavior: "smooth", block: "start" });
+  };
+
   const canShowSubmittedResult =
     !!existingSubmission && !isEditingSubmittedOrder;
   const showSummaryView = isClosed || canShowSubmittedResult;
@@ -413,148 +455,192 @@ export default function ParticipantView({ orderId }: { orderId: string }) {
       loadingRows={5}
       loadingSections={2}
     >
-      <Space direction="vertical" style={{ width: "100%" }} size={16}>
-        {orderAccess?.is_owner && (
-          <Alert
-            type="info"
-            showIcon
-            message={
-              <Text>
-                {"You're the owner of this order! "}
-                <Link
-                  href={`/order/${orderId}/admin`}
-                  onClick={(event) => {
-                    event.preventDefault();
-                    navigateTo(`/order/${orderId}/admin`);
-                  }}
-                >
-                  Manage order
-                </Link>
-              </Text>
-            }
+      <div style={{ position: "relative" }}>
+        <Space direction="vertical" style={{ width: "100%" }} size={16}>
+          {orderAccess?.is_owner && (
+            <Alert
+              type="info"
+              showIcon
+              message={
+                <Text>
+                  {"You're the owner of this order! "}
+                  <Link
+                    href={`/order/${orderId}/admin`}
+                    onClick={(event) => {
+                      event.preventDefault();
+                      navigateTo(`/order/${orderId}/admin`);
+                    }}
+                  >
+                    Manage order
+                  </Link>
+                </Text>
+              }
+            />
+          )}
+
+          {isClosed && (
+            <Alert
+              type="warning"
+              showIcon
+              message="This order is closed. Submissions can no longer be changed."
+            />
+          )}
+
+          <ReadOnlyOrderOverviewCard
+            id={OVERVIEW_CARD_ID}
+            order={liveOrder}
+            config={config}
+            extraTabs={paymentTabs}
+            activeTabKey={activeOverviewTab}
+            onTabChange={setOverviewTab}
           />
-        )}
 
-        {isClosed && (
-          <Alert
-            type="warning"
-            showIcon
-            message="This order is closed. Submissions can no longer be changed."
-          />
-        )}
-
-        <ReadOnlyOrderOverviewCard order={liveOrder} config={config} />
-
-        <Card
-          title="Your order"
-          extra={
-            existingSubmission && !isClosed ? (
-              canShowSubmittedResult ? (
-                <Button
-                  type="primary"
-                  onClick={() => setIsEditingSubmittedOrder(true)}
-                >
-                  Manage order
-                </Button>
-              ) : (
-                <Button
-                  onClick={() => {
-                    setIsEditingSubmittedOrder(false);
-                    form.resetFields();
-                  }}
-                >
-                  Back to Summary
-                </Button>
-              )
-            ) : null
-          }
-        >
-          <Space direction="vertical" style={{ width: "100%" }}>
-            {showSummaryView ? (
-              <ParticipantSubmissionSummary
-                submission={existingSubmission}
-                savedOrderString={savedOrderString}
-                savedEstimatedTotal={savedEstimatedTotal}
-                isClosed={isClosed}
-              />
-            ) : (
-              <Form form={form} layout="vertical" onFinish={onFinish}>
-                {config.categories.length === 0 ? (
-                  <Alert
-                    type="info"
-                    showIcon
-                    message="No form configuration available for this order."
-                    style={{ marginBottom: 8 }}
-                  />
+          <Card
+            title="Your order"
+            extra={
+              existingSubmission && !isClosed ? (
+                canShowSubmittedResult ? (
+                  <Button
+                    type="primary"
+                    onClick={() => setIsEditingSubmittedOrder(true)}
+                  >
+                    Manage order
+                  </Button>
                 ) : (
-                  <Row gutter={12}>
-                    <ParticipantCategoryFields
-                      categories={config.categories}
-                      isClosed={isClosed}
+                  <Button
+                    onClick={() => {
+                      setIsEditingSubmittedOrder(false);
+                      form.resetFields();
+                    }}
+                  >
+                    Back to Summary
+                  </Button>
+                )
+              ) : null
+            }
+          >
+            <Space direction="vertical" style={{ width: "100%" }}>
+              {showSummaryView && (
+                <ParticipantSubmissionSummary
+                  submission={existingSubmission}
+                  savedOrderString={savedOrderString}
+                  savedEstimatedTotal={savedEstimatedTotal}
+                  isClosed={isClosed}
+                />
+              )}
+              {showSummaryView && showPaymentPrompt && (
+                <Alert
+                  type="info"
+                  showIcon
+                  icon={<WalletOutlined />}
+                  message={
+                    savedEstimatedTotal
+                      ? `Your estimated total is ${savedEstimatedTotal}`
+                      : "Payment details are available for this order"
+                  }
+                  action={
+                    <Button size="small" type="primary" onClick={openPaymentTab}>
+                      How to pay
+                    </Button>
+                  }
+                />
+              )}
+              {!showSummaryView && (
+                <Form form={form} layout="vertical" onFinish={onFinish}>
+                  {config.categories.length === 0 ? (
+                    <Alert
+                      type="info"
+                      showIcon
+                      message="No form configuration available for this order."
+                      style={{ marginBottom: 8 }}
                     />
-                  </Row>
-                )}
+                  ) : (
+                    <Row gutter={12}>
+                      <ParticipantCategoryFields
+                        categories={config.categories}
+                        isClosed={isClosed}
+                      />
+                    </Row>
+                  )}
 
-                {config.categories.length > 0 && (
-                  <>
-                    <ParticipantDraftSummaryAlert
-                      hasExistingSubmission={!!existingSubmission}
-                      hasActiveChanges={hasActiveChanges}
-                      savedOrderString={savedOrderString}
-                      savedEstimatedTotal={savedEstimatedTotal}
-                      draftOrderString={draftOrderString}
-                      draftEstimatedTotal={draftEstimatedTotal}
-                    />
+                  {config.categories.length > 0 && (
+                    <>
+                      <ParticipantDraftSummaryAlert
+                        hasExistingSubmission={!!existingSubmission}
+                        hasActiveChanges={hasActiveChanges}
+                        savedOrderString={savedOrderString}
+                        savedEstimatedTotal={savedEstimatedTotal}
+                        draftOrderString={draftOrderString}
+                        draftEstimatedTotal={draftEstimatedTotal}
+                      />
 
-                    <Space>
-                      <Tooltip
-                        title={
-                          existingSubmission
-                            ? "Save updates to your submission"
-                            : "Submit your order"
-                        }
-                      >
-                        <Button
-                          type="primary"
-                          htmlType="submit"
-                          icon={<SaveOutlined />}
-                          loading={submitting}
-                          disabled={isClosed}
+                      <Space>
+                        <Tooltip
+                          title={
+                            existingSubmission
+                              ? "Save updates to your submission"
+                              : "Submit your order"
+                          }
                         >
-                          {existingSubmission ? "Update" : "Submit"}
-                        </Button>
-                      </Tooltip>
+                          <Button
+                            type="primary"
+                            htmlType="submit"
+                            icon={<SaveOutlined />}
+                            loading={submitting}
+                            disabled={isClosed}
+                          >
+                            {existingSubmission ? "Update" : "Submit"}
+                          </Button>
+                        </Tooltip>
 
-                      {existingSubmission && (
-                        <Popconfirm
-                          title="Delete your current submission?"
-                          description="This action cannot be undone."
-                          okText="Delete"
-                          cancelText="Cancel"
-                          okButtonProps={{ danger: true }}
-                          onConfirm={deleteSubmission}
-                          disabled={isClosed}
-                        >
-                          <Tooltip title="Delete your current submission">
-                            <Button
-                              danger
-                              icon={<DeleteOutlined />}
-                              loading={submitting}
-                              disabled={isClosed}
-                            >
-                              Delete
-                            </Button>
-                          </Tooltip>
-                        </Popconfirm>
-                      )}
-                    </Space>
-                  </>
-                )}
-              </Form>
-            )}
-          </Space>
-        </Card>
-      </Space>
+                        {existingSubmission && (
+                          <Popconfirm
+                            title="Delete your current submission?"
+                            description="This action cannot be undone."
+                            okText="Delete"
+                            cancelText="Cancel"
+                            okButtonProps={{ danger: true }}
+                            onConfirm={deleteSubmission}
+                            disabled={isClosed}
+                          >
+                            <Tooltip title="Delete your current submission">
+                              <Button
+                                danger
+                                icon={<DeleteOutlined />}
+                                loading={submitting}
+                                disabled={isClosed}
+                              >
+                                Delete
+                              </Button>
+                            </Tooltip>
+                          </Popconfirm>
+                        )}
+                      </Space>
+                    </>
+                  )}
+                </Form>
+              )}
+            </Space>
+          </Card>
+        </Space>
+        {hasPayment && showPaymentSidebar && (
+          <aside
+            style={{
+              position: "absolute",
+              top: 0,
+              bottom: 0,
+              left: `calc(100% + ${PAYMENT_SIDEBAR_GAP}px)`,
+              width: PAYMENT_SIDEBAR_WIDTH,
+            }}
+          >
+            <PaymentDetailsCard
+              payment={{ methods: paymentMethods }}
+              context={paymentContext}
+              style={{ position: "sticky", top: 24, maxHeight: "calc(100vh - 48px)", overflowY: "auto" }}
+            />
+          </aside>
+        )}
+      </div>
     </AsyncContent>
   );
 }