fix(UI): улучшен hover на кнопках и читаемость bulk actions

frontend/src/ServerManager.jsx

@@ -718,20 +718,20 @@ function ServerManager() {
                   <div className="d-flex align-items-center gap-2">
                     {/* Select all */}
                     <button
-                      className="btn btn-ghost-secondary btn-sm d-flex align-items-center"
+                      className="btn btn-outline-secondary btn-sm d-flex align-items-center"
                       onClick={selectAllServers}
                     >
                       {selectedServers.size === filteredServers.length && filteredServers.length > 0 ? (
                         <IconSquareCheck size={16} className="me-1 text-primary" />
                       ) : (
-                        <IconSquare size={16} className="me-1" />
+                        <IconSquare size={16} className="me-1 text-muted" />
                       )}
                       Выбрать все
                     </button>
 
                     {/* Sort dropdown */}
                     <div className="dropdown">
-                      <button className="btn btn-ghost-secondary btn-sm dropdown-toggle" type="button" data-bs-toggle="dropdown">
+                      <button className="btn btn-outline-secondary btn-sm dropdown-toggle" type="button" data-bs-toggle="dropdown">
                         Сортировка: {sortField}
                       </button>
                       <div className="dropdown-menu">

frontend/src/components/server/ServerBulkActions.jsx

@@ -32,8 +32,8 @@ export default function ServerBulkActions({
       <div className="d-flex align-items-center justify-content-between gap-3">
         {/* Счётчик выбранных */}
         <div className="d-flex align-items-center gap-2">
-          <span className="badge bg-primary fs-6">{selectedCount}</span>
-          <span className="text-white-50">выбрано</span>
+          <span className="badge bg-blue fs-6">{selectedCount}</span>
+          <span className="text-white fw-normal">серверов выбрано</span>
         </div>
 
         {/* Действия */}