admin onboarding (#4863)

# Description of Changes

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Please provide a summary of the changes, including:

- What was changed
- Why the change was made
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Closes #(issue_number)
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---

## Checklist

### General

- [ ] I have read the [Contribution
Guidelines](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/CONTRIBUTING.md)
- [ ] I have read the [Stirling-PDF Developer
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/DeveloperGuide.md)
(if applicable)
- [ ] I have read the [How to add new languages to
Stirling-PDF](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/HowToAddNewLanguage.md)
(if applicable)
- [ ] I have performed a self-review of my own code
- [ ] My changes generate no new warnings

### Documentation

- [ ] I have updated relevant docs on [Stirling-PDF's doc
repo](https://github.com/Stirling-Tools/Stirling-Tools.github.io/blob/main/docs/)
(if functionality has heavily changed)
- [ ] I have read the section [Add New Translation
Tags](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/HowToAddNewLanguage.md#add-new-translation-tags)
(for new translation tags only)

### Translations (if applicable)

- [ ] I ran
[`scripts/counter_translation.py`](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/docs/counter_translation.md)

### UI Changes (if applicable)

- [ ] Screenshots or videos demonstrating the UI changes are attached
(e.g., as comments or direct attachments in the PR)

### Testing (if applicable)

- [ ] I have tested my changes locally. Refer to the [Testing
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/DeveloperGuide.md#6-testing)
for more details.

---------

Co-authored-by: EthanHealy01 <[email protected]>

frontend/src/core/components/onboarding/OnboardingTour.css

@@ -6,3 +6,28 @@
   ry: 8px;
   filter: drop-shadow(0 0 10px var(--mantine-primary-color-filled));
 }
+
+/* Add glowing border to navigation items during admin tour */
+.modal-nav-item.tour-nav-glow {
+  position: relative;
+  box-shadow:
+    0 0 0 2px var(--mantine-primary-color-filled),
+    0 0 15px var(--mantine-primary-color-filled),
+    inset 0 0 15px rgba(59, 130, 246, 0.1);
+  border-radius: 8px;
+}
+
+@keyframes pulse-glow {
+  0%, 100% {
+    box-shadow:
+      0 0 0 3px var(--mantine-primary-color-filled),
+      0 0 20px var(--mantine-primary-color-filled),
+      inset 0 0 20px rgba(59, 130, 246, 0.1);
+  }
+  50% {
+    box-shadow:
+      0 0 0 3px var(--mantine-primary-color-filled),
+      0 0 30px var(--mantine-primary-color-filled),
+      inset 0 0 30px rgba(59, 130, 246, 0.2);
+  }
+}