Refactor financial chart implementation

css/style.css

@@ -24,25 +24,9 @@ button {
   cursor: pointer;
 }
 
-.app-header {
-  min-height: 76px;
-  padding: 16px 28px;
-  display: flex;
-  align-items: center;
-  justify-content: space-between;
-  gap: 24px;
-  background: var(--surface);
-  border-bottom: 1px solid var(--line);
-}
-
-.app-brand h1,
-.app-brand p,
 .card-title,
 .sidebar-title { margin: 0; }
 
-.app-brand h1 { font-size: 21px; font-weight: 600; }
-.app-brand p { margin-top: 4px; color: var(--muted); font-size: 13px; }
-
 .reload-button,
 .export-button {
   padding: 7px 13px;
@@ -53,12 +37,24 @@ button {
 }
 
 .reload-button {
+  position: fixed;
+  top: 16px;
+  right: 18px;
+  z-index: 10;
+  width: 36px;
+  height: 36px;
+  padding: 0;
+  display: grid;
+  place-items: center;
   color: #fff;
   background: var(--accent);
   border-color: var(--accent);
+  border-radius: 50%;
+  font-size: 22px;
+  line-height: 1;
 }
 
-.reload-button:hover { opacity: .88; }
+.reload-button:hover { opacity: .88; transform: rotate(-45deg); }
 .export-button:hover { color: var(--accent); border-color: var(--accent); }
 
 .app-layout {
@@ -67,7 +63,7 @@ button {
   gap: 24px;
   max-width: 1600px;
   margin: 0 auto;
-  padding: 28px 24px 64px;
+  padding: 20px 24px 64px;
 }
 
 .sidebar {
@@ -201,9 +197,7 @@ button {
   .chart-sidebar { display: none; }
 }
 
-@media (max-width: 720px) {
-  .app-header { padding: 14px 16px; }
-  .app-brand p { display: none; }
+@media (max-width: 880px) {
   .app-layout { display: block; padding: 16px 12px 40px; }
   .sidebar { position: static; margin-bottom: 12px; }
   .company-sidebar { padding: 7px; }