refactor: minor style updates for the AI Assistant UI

Author: AndrewKushnir

report-app/src/app/shared/ai-assistant/ai-assistant.scss

@@ -7,7 +7,7 @@
   width: 500px;
   height: 650px;
   border-radius: 12px;
-  box-shadow: var(--shadow);
+  box-shadow: var(--overlay-shadow);
   background-color: var(--card-bg-color);
   overflow: hidden;
   display: flex;
@@ -38,7 +38,6 @@
 
   .header-title {
     display: flex;
-    flex-direction: column;
     gap: 8px;
     flex: 1;
     min-width: 0;
@@ -52,7 +51,7 @@
 
   h2 {
     margin: 0;
-    font-size: 1em;
+    font-size: 1.2em;
     color: var(--text-primary);
   }
 
@@ -158,7 +157,7 @@
     font-family: inherit;
     font-size: 1em;
     line-height: 1.4;
-    max-height: 100px;
+    height: 45px;
 
     &:focus {
       outline: none;

report-app/src/styles.scss

@@ -45,6 +45,7 @@
     0 4px 6px -1px rgb(0 0 0 / 0.05), 0 2px 4px -2px rgb(0 0 0 / 0.05),
     0 4px 6px -1px rgb(0 0 0 / 0.2), 0 2px 4px -2px rgb(0 0 0 / 0.2)
   );
+  --overlay-shadow: 0 3px 10px rgba(0, 0, 0, 0.15);
   --transition-speed: 0.2s;
   --main-container-width: 1200px;
   --control-height: 36px;