Redesign and translate grid controls

src/app/globals.css

@@ -115,24 +115,62 @@ body {
   margin-top: 2rem;
   border: 1px solid #cfd7e5;
   background: #fff;
-  border-radius: 4px;
+  border-radius: 5px;
   box-shadow: 0 6px 16px rgba(0, 0, 0, 0.12);
-  padding: 0.45rem;
-  width: 300px;
+  padding: 0.55rem;
+  width: 340px;
+  color: #1f2937;
+  text-align: left;
 }
 
-.column-settings-actions {
+.column-settings-title-row,
+.column-settings-footer {
   display: flex;
-  justify-content: flex-end;
-  margin-bottom: 0.35rem;
+  align-items: center;
+  justify-content: space-between;
+  gap: 0.4rem;
+}
+
+.column-settings-title-row {
+  margin-bottom: 0.25rem;
+  font-size: 0.82rem;
+}
+
+.column-settings-close {
+  border: 0 !important;
+  background: transparent !important;
+  color: #4b5563;
+  padding: 0.05rem 0.2rem !important;
+  font-size: 1rem !important;
+  line-height: 1;
+  cursor: pointer;
+}
+
+.column-settings-explanation {
+  margin-bottom: 0.4rem;
+  color: #4b5563;
+  font-size: 0.72rem;
+  line-height: 1.3;
+}
+
+.column-settings-search {
+  width: 100%;
+  margin-bottom: 0.4rem;
+  border: 1px solid #c4cddc;
+  border-radius: 4px;
+  padding: 0.3rem 0.4rem;
+  font-size: 0.76rem;
 }
 
 .column-settings-list {
   display: flex;
   flex-direction: column;
-  gap: 0.25rem;
-  max-height: 340px;
+  gap: 0.15rem;
+  max-height: 300px;
   overflow: auto;
+  border: 1px solid #e1e6ef;
+  border-radius: 4px;
+  padding: 0.25rem;
 }
 
 .column-settings-item {
@@ -142,7 +180,12 @@ body {
   gap: 0.4rem;
   border: 1px solid transparent;
   border-radius: 4px;
-  padding: 0.2rem 0.25rem;
+  padding: 0.1rem;
+}
+
+.column-settings-item.selected {
+  border-color: #bfdbfe;
+  background: #eff6ff;
 }
 
 .column-settings-item.dragging {
@@ -158,11 +201,32 @@ body {
   background: #f7fafc;
 }
 
-.column-settings-item label {
+.column-visibility-button {
   display: flex;
-  gap: 0.3rem;
   align-items: center;
+  gap: 0.35rem;
+  flex: 1;
+  min-width: 0;
+  border: 0 !important;
+  background: transparent !important;
+  padding: 0.2rem 0.25rem !important;
+  color: inherit;
+  text-align: left;
   font-size: 0.8rem;
+  cursor: pointer;
+}
+
+.column-visibility-button:disabled {
+  cursor: default;
+}
+
+.selection-marker {
+  display: inline-flex;
+  flex: 0 0 1rem;
+  align-items: center;
+  justify-content: center;
+  color: #1d4ed8;
+  font-weight: 700;
 }
 
 .column-settings-order {
@@ -189,6 +253,23 @@ body {
   scrollbar-gutter: stable;
 }
 
+.column-settings-empty {
+  padding: 0.55rem 0.35rem;
+  color: #6b7280;
+  font-size: 0.76rem;
+}
+
+.column-settings-footer {
+  justify-content: flex-end;
+  margin-top: 0.45rem;
+}
+
+.column-settings-footer button.primary {
+  border-color: #2563eb;
+  background: #2563eb;
+  color: #fff;
+}
+
 .tree-editor-layout {
   display: grid;
   grid-template-columns: minmax(240px, 320px) minmax(0, 1fr);
@@ -300,7 +381,6 @@ body {
   gap: 0.3rem;
 }
 
-.tree-grid .header-sort-btn,
 .tree-grid .header-filter-btn {
   border: 1px solid #c4cddc;
   background: #fff;
@@ -310,7 +390,28 @@ body {
 }
 
 .tree-grid .header-sort-btn {
+  display: inline-flex;
+  align-items: center;
+  gap: 0.25rem;
+  border: 0;
+  background: transparent;
+  padding: 0;
+  color: #1f2937;
+  font: inherit;
+  font-size: 0.78rem;
+  font-weight: 600;
   text-align: left;
+  cursor: pointer;
+}
+
+.tree-grid .header-sort-btn:hover span:first-child,
+.tree-grid .header-sort-btn:focus-visible span:first-child {
+  text-decoration: underline;
+}
+
+.tree-grid .sort-indicator {
+  color: #2563eb;
+  font-size: 0.85rem;
 }
 
 .tree-grid .header-filter-btn.active {
@@ -407,9 +508,26 @@ body {
 .tree-grid .header-filter-item {
   display: flex;
   align-items: center;
-  gap: 0.25rem;
+  gap: 0.35rem;
+  width: 100%;
+  border: 1px solid transparent;
+  border-radius: 3px;
+  background: transparent;
+  padding: 0.25rem 0.3rem;
+  color: #1f2937;
   font-weight: 400;
   font-size: 0.75rem;
+  text-align: left;
+  cursor: pointer;
+}
+
+.tree-grid .header-filter-item:hover {
+  background: #f3f4f6;
+}
+
+.tree-grid .header-filter-item.selected {
+  border-color: #bfdbfe;
+  background: #eff6ff;
 }
 
 .tree-grid .header-filter-empty {