fix(admin): tighten sidebar and content spacing

src/static/admin/css/mostovik-admin-theme.css

@@ -87,6 +87,7 @@ body,
     radial-gradient(circle at top, rgba(73, 208, 200, 0.1), transparent 34%);
   border-right: 1px solid rgba(73, 208, 200, 0.1);
   box-shadow: inset -1px 0 0 rgba(255, 255, 255, 0.03);
+  overflow-x: hidden;
 }
 
 .brand-link {
@@ -101,7 +102,7 @@ body,
 }
 
 .nav-sidebar > .nav-item > .nav-link {
-  margin: 0.18rem 0.55rem;
+  margin: 0 0 0.4rem;
   border-radius: 14px;
   color: var(--mx-text-muted);
   transition: background-color 0.18s ease, color 0.18s ease, transform 0.18s ease;
@@ -125,6 +126,21 @@ body,
     0 8px 18px rgba(6, 18, 22, 0.28);
 }
 
+#jazzy-sidebar .sidebar {
+  padding: 0.85rem 0.75rem 1rem;
+}
+
+#jazzy-sidebar .user-panel {
+  margin-left: 0;
+  margin-right: 0;
+  padding-left: 0.25rem;
+  padding-right: 0.25rem;
+}
+
+#jazzy-sidebar .nav-sidebar {
+  padding-right: 0.1rem;
+}
+
 .nav-sidebar .nav-header {
   color: var(--mx-text-dim);
   font-size: 0.7rem;
@@ -137,6 +153,15 @@ body,
   background-color: transparent;
 }
 
+.content-wrapper > .content {
+  padding: 1rem 1.1rem 1.4rem 1.15rem;
+}
+
+.content-wrapper > .content > .container-fluid {
+  padding-left: 0.35rem;
+  padding-right: 1rem;
+}
+
 .content-header h1 {
   font-weight: 700;
   letter-spacing: 0.01em;
@@ -505,6 +530,7 @@ code {
 
 .dashboard .admin-dashboard-grid {
   row-gap: 1rem;
+  padding-right: 0.35rem;
 }
 
 .dashboard .card,
@@ -546,6 +572,15 @@ code {
 }
 
 @media (max-width: 991.98px) {
+  .content-wrapper > .content {
+    padding: 0.85rem 0.7rem 1.1rem;
+  }
+
+  .content-wrapper > .content > .container-fluid {
+    padding-left: 0.1rem;
+    padding-right: 0.1rem;
+  }
+
   .main-header.navbar {
     flex-wrap: wrap;
     row-gap: 0.5rem;