update: add a welcome dialog to the app

webapp/app.ironcalc.com/frontend/src/components/WelcomeDialog/WelcomeDialog.tsx

@@ -0,0 +1,211 @@
+import { Dialog, styled } from "@mui/material";
+import { House, Table, TicketsPlane, X } from "lucide-react";
+import { useState } from "react";
+import TemplatesListItem from "./TemplatesListItem";
+import IronCalcIcon from "./ironcalc_icon_white.svg";
+
+function WelcomeDialog(properties: {
+  onClose: () => void;
+}) {
+  const [selectedTemplate, setSelectedTemplate] = useState<string | null>(
+    "blank",
+  );
+
+  const handleClose = () => {
+    properties.onClose();
+  };
+
+  const handleTemplateSelect = (templateId: string) => {
+    setSelectedTemplate(templateId);
+  };
+
+  return (
+    <DialogWrapper open={true} onClose={() => {}}>
+      <DialogHeader>
+        <DialogHeaderTitleWrapper>
+          <DialogHeaderLogoWrapper>
+            <DialogHeaderLogo src={IronCalcIcon} />
+          </DialogHeaderLogoWrapper>
+          <DialogHeaderTitle>Welcome to IronCalc</DialogHeaderTitle>
+          <DialogHeaderTitleSubtitle>
+            Start with a blank workbook or a ready-made template.
+          </DialogHeaderTitleSubtitle>
+        </DialogHeaderTitleWrapper>
+        <Cross
+          onClick={handleClose}
+          title="Close Dialog"
+          tabIndex={0}
+          onKeyDown={(event) => event.key === "Enter" && properties.onClose()}
+        >
+          <X />
+        </Cross>
+      </DialogHeader>
+      <DialogContent>
+        <ListTitle>New</ListTitle>
+        <TemplatesListWrapper>
+          <TemplatesListItem
+            title="Blank workbook"
+            description="Create from scratch or upload your own file."
+            icon={<Table />}
+            iconColor="#F2994A"
+            active={selectedTemplate === "blank"}
+            onClick={() => handleTemplateSelect("blank")}
+          />
+        </TemplatesListWrapper>
+        <ListTitle>Templates</ListTitle>
+        <TemplatesListWrapper>
+          <TemplatesListItem
+            title="Mortgage calculator"
+            description="Estimate payments, interest, and overall cost."
+            icon={<House />}
+            iconColor="#2F80ED"
+            active={selectedTemplate === "mortgage"}
+            onClick={() => handleTemplateSelect("mortgage")}
+          />
+          <TemplatesListItem
+            title="Travel expenses tracker"
+            description="Track trip costs and stay on budget."
+            icon={<TicketsPlane />}
+            iconColor="#EB5757"
+            active={selectedTemplate === "travel"}
+            onClick={() => handleTemplateSelect("travel")}
+          />
+        </TemplatesListWrapper>
+      </DialogContent>
+      <DialogFooter>
+        <DialogFooterButton>Create workbook</DialogFooterButton>
+      </DialogFooter>
+    </DialogWrapper>
+  );
+}
+
+const DialogWrapper = styled(Dialog)`
+  font-family: Inter;
+  .MuiDialog-paper {
+    width: 440px;
+    border-radius: 12px;
+    margin: 16px;
+    border: 1px solid #e0e0e0;;
+  }
+  .MuiBackdrop-root {
+    background-color: rgba(0, 0, 0, 0.4);
+  }
+`;
+
+const DialogHeader = styled("div")`
+  display: flex;
+  flex-direction: row;
+  align-items: flex-start;
+  border-bottom: 1px solid #e0e0e0;
+  padding: 16px;
+  font-family: Inter;
+`;
+
+const DialogHeaderTitleWrapper = styled("span")`
+  display: flex;
+  flex-direction: column;
+  align-items: flex-start;
+  font-size: 14px;
+  font-weight: 500;
+  padding: 4px 0px;
+  gap: 4px;
+  width: 100%;
+`;
+
+const DialogHeaderTitle = styled("span")`
+  font-weight: 700;
+`;
+
+const DialogHeaderTitleSubtitle = styled("span")`
+  font-size: 12px;
+  color: #757575;
+`;
+
+const DialogHeaderLogoWrapper = styled("div")`
+  display: flex;
+  flex-direction: row;
+  align-items: center;
+  justify-content: center;
+  max-width: 20px;
+  max-height: 20px;
+  background-color: #F2994A;
+  padding: 10px;
+  margin-bottom: 12px;
+  border-radius: 6px;
+  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
+  transform: rotate(-8deg);
+  user-select: none;
+  -webkit-user-select: none;
+  -moz-user-select: none;
+  -ms-user-select: none;
+`;
+
+const DialogHeaderLogo = styled("img")`
+  width: 18px;
+  height: auto;
+`;
+
+const Cross = styled("div")`
+  &:hover {
+    background-color: #f5f5f5;
+  }
+  display: flex;
+  border-radius: 4px;
+  min-height: 24px;
+  min-width: 24px;
+  cursor: pointer;
+  align-items: center;
+  justify-content: center;
+  svg {
+    width: 16px;
+    height: 16px;
+    stroke-width: 1.5;
+  }
+`;
+
+const DialogContent = styled("div")`
+  display: flex;
+  flex-direction: column;
+  gap: 12px;
+  padding: 16px;
+  max-height: 300px;
+  overflow: hidden;
+  overflow-y: auto;
+`;
+
+const ListTitle = styled("div")`
+  font-size: 12px;
+  font-weight: 600;
+  color: #424242;
+`;
+
+const TemplatesListWrapper = styled("div")`
+  display: flex;
+  flex-direction: column;
+  gap: 10px;
+`;
+
+const DialogFooter = styled("div")`
+  border-top: 1px solid #e0e0e0;
+  padding: 16px;
+`;
+
+const DialogFooterButton = styled("button")`
+  background-color: #F2994A;
+  border: none;
+  color: #FFF;
+  padding: 12px;
+  border-radius: 4px;
+  cursor: pointer;
+  width: 100%;
+  font-size: 12px;
+  font-family: Inter;
+  &:hover {
+    background-color: #D68742;
+  }
+  &:active {
+    background-color: #D68742;
+  }
+`;
+
+export default WelcomeDialog;