Adjust admin users page layout

- Increased container max-width from 1200px to 1400px for wider user list
- Reduced modal max-height from 90vh to 70vh for better fit and scrollability

templates/admin/users.html

@@ -4,7 +4,7 @@
 
 {% block head %}
 <style>
-    .container { max-width: 1200px; margin: 2rem auto; padding: 0 2rem; }
+    .container { max-width: 1400px; margin: 2rem auto; padding: 0 2rem; }
     .admin-card { background: white; padding: 2rem; border-radius: 12px; box-shadow: 0 2px 10px rgba(0,0,0,0.05); margin-bottom: 2rem; }
     .card-header { margin-bottom: 1.5rem; }
     .card-header h3 { margin: 0; color: #1e293b; }
@@ -33,7 +33,7 @@
     /* Modal Styles */
     .modal { display: none; position: fixed; z-index: 1000; left: 0; top: 0; width: 100%; height: 100%; background-color: rgba(0,0,0,0.5); }
     .modal.show { display: flex; align-items: center; justify-content: center; }
-    .modal-content { background-color: white; margin: 0; padding: 0; width: 90%; max-width: 600px; border-radius: 12px; box-shadow: 0 10px 30px rgba(0,0,0,0.3); max-height: 90vh; overflow: hidden; display: flex; flex-direction: column; }
+    .modal-content { background-color: white; margin: 0; padding: 0; width: 90%; max-width: 600px; border-radius: 12px; box-shadow: 0 10px 30px rgba(0,0,0,0.3); max-height: 70vh; overflow: hidden; display: flex; flex-direction: column; }
     .modal-header { padding: 1rem 2rem; border-bottom: 1px solid #e5e7eb; display: flex; justify-content: space-between; align-items: center; flex-shrink: 0; }
     .modal-body { padding: 2rem; overflow-y: auto; flex: 1; }
     .modal-footer { padding: 1rem 2rem; border-top: 1px solid #e5e7eb; text-align: right; flex-shrink: 0; }