Manage Administrator UI + backend implemented.

src/main/java/org/to/telegramfinalproject/Database/GroupDatabase.java

@@ -758,4 +758,27 @@ public class GroupDatabase {
         return result;
     }
 
+    public static JSONObject getAdminPermissions(UUID groupId, UUID adminId) throws SQLException {
+        String sql = """
+        SELECT permissions
+        FROM group_members
+        WHERE group_id = ? AND user_id = ? AND role = 'admin'
+    """;
+
+        try (Connection conn = ConnectionDb.connect();
+             PreparedStatement ps = conn.prepareStatement(sql)) {
+            ps.setObject(1, groupId);
+            ps.setObject(2, adminId);
+
+            ResultSet rs = ps.executeQuery();
+            if (rs.next()) {
+                String jsonStr = rs.getString("permissions");
+                if (jsonStr != null && !jsonStr.isBlank()) {
+                    return new JSONObject(jsonStr);
+                }
+            }
+        }
+        return null; // not found or no permissions
+    }
+
 }

src/main/java/org/to/telegramfinalproject/Server/ClientHandler.java

@@ -3029,6 +3029,38 @@ public class ClientHandler implements Runnable {
                         break;
                     }
 
+                    case "get_group_admin_permissions": {
+                        if (currentUser == null) {
+                            response = new ResponseModel("error", "Unauthorized. Please login first.");
+                            break;
+                        }
+
+                        try {
+                            UUID groupId = UUID.fromString(requestJson.getString("group_id"));
+                            UUID adminId = UUID.fromString(requestJson.getString("admin_id"));
+
+                            // Only owner/admins can view
+                            String myRole = GroupDatabase.getGroupRole(groupId, currentUser.getInternal_uuid());
+                            if (!"owner".equalsIgnoreCase(myRole) && !"admin".equalsIgnoreCase(myRole)) {
+                                response = new ResponseModel("error", "You are not authorized to view admin permissions.");
+                                break;
+                            }
+
+                            JSONObject perms = GroupDatabase.getAdminPermissions(groupId, adminId);
+
+                            if (perms != null) {
+                                JSONObject data = new JSONObject().put("permissions", perms);
+                                response = new ResponseModel("success", "Permissions fetched successfully.", data);
+                            } else {
+                                response = new ResponseModel("error", "Admin permissions not found.");
+                            }
+
+                        } catch (Exception e) {
+                            response = new ResponseModel("error", "Error fetching admin permissions: " + e.getMessage());
+                        }
+                        break;
+                    }
+
 
                     default:
                         response = new ResponseModel("error", "Unknown action: " + action);

src/main/java/org/to/telegramfinalproject/UI/AddAdminsController.java

@@ -0,0 +1,125 @@
+package org.to.telegramfinalproject.UI;
+
+import javafx.fxml.FXML;
+import javafx.fxml.FXMLLoader;
+import javafx.geometry.Pos;
+import javafx.scene.Node;
+import javafx.scene.control.*;
+import javafx.scene.image.Image;
+import javafx.scene.image.ImageView;
+import javafx.scene.layout.*;
+import org.json.JSONArray;
+import org.json.JSONObject;
+import org.to.telegramfinalproject.Client.ActionHandler;
+import org.to.telegramfinalproject.Client.AvatarLocalResolver;
+
+import java.io.IOException;
+import java.util.UUID;
+
+public class AddAdminsController {
+
+    @FXML private VBox addAdminsCard;
+    @FXML private Pane overlayBackground;
+    @FXML private Button closeButton;
+    @FXML private Button closeFooterButton;
+    @FXML private ScrollPane membersScroll;
+    @FXML private VBox membersList;
+
+    private String groupId;
+
+    @FXML
+    private void initialize() {
+        closeButton.setOnAction(e -> MainController.getInstance().closeOverlay(addAdminsCard.getParent()));
+        closeFooterButton.setOnAction(e -> MainController.getInstance().closeOverlay(addAdminsCard.getParent()));
+        overlayBackground.setOnMouseClicked(e -> MainController.getInstance().closeOverlay(addAdminsCard.getParent()));
+
+        // Smooth scroll feel
+        membersScroll.getStylesheets().add(getClass().getResource("/org/to/telegramfinalproject/CSS/scrollpane.css").toExternalForm());
+        membersScroll.setPannable(true);
+        membersScroll.setFitToWidth(true);
+        membersScroll.setFitToHeight(false);
+        membersScroll.getContent().setOnScroll(event -> {
+            double deltaY = event.getDeltaY() * 0.003;
+            membersScroll.setVvalue(membersScroll.getVvalue() - deltaY);
+        });
+    }
+
+    public void setGroupData(String groupId, JSONArray members) {
+        this.groupId = groupId;
+        membersList.getChildren().clear();
+
+        for (int i = 0; i < members.length(); i++) {
+            JSONObject m = members.getJSONObject(i);
+
+            String role = m.optString("role", "member");
+            if ("owner".equalsIgnoreCase(role) || "admin".equalsIgnoreCase(role)) {
+                continue; // skip existing admins/owner
+            }
+
+            addMemberRow(m);
+        }
+    }
+
+    private void addMemberRow(JSONObject m) {
+        HBox row = new HBox(10);
+        row.getStyleClass().add("member-row");
+        row.setAlignment(Pos.CENTER_LEFT);
+
+        // Avatar
+        ImageView avatar = new ImageView();
+        avatar.setFitWidth(36);
+        avatar.setFitHeight(36);
+        avatar.setPreserveRatio(true);
+
+        String imgUrl = m.optString("image_url", "");
+        if (!imgUrl.isBlank()) {
+            Image img = AvatarLocalResolver.load(imgUrl);
+            if (img != null) avatar.setImage(img);
+        } else {
+            avatar.setImage(new Image(getClass().getResourceAsStream(
+                    "/org/to/telegramfinalproject/Avatars/default_user_profile.png"
+            )));
+        }
+
+        // Name + Status
+        VBox details = new VBox(2);
+        Label name = new Label(m.optString("profile_name", "Unknown"));
+        name.getStyleClass().add("member-name");
+
+        Label status = new Label(m.optBoolean("is_online", false) ? "online" : "last seen recently");
+        status.getStyleClass().add("member-status");
+
+        details.getChildren().addAll(name, status);
+
+        Region spacer = new Region();
+        HBox.setHgrow(spacer, Priority.ALWAYS);
+
+        Button promoteBtn = new Button("Promote");
+        promoteBtn.getStyleClass().add("link-btn");
+        promoteBtn.setOnAction(e -> promoteToAdmin(m.optString("internal_uuid"), row));
+
+        row.getChildren().addAll(avatar, details, spacer, promoteBtn);
+        membersList.getChildren().add(row);
+    }
+
+    private void promoteToAdmin(String internalUuid, HBox row) {
+        try {
+            FXMLLoader loader = new FXMLLoader(getClass().getResource(
+                    "/org/to/telegramfinalproject/Fxml/set_group_admin_permissions.fxml"));
+            Node overlay = loader.load();
+
+            SetGroupAdminPermissionsController controller = loader.getController();
+            controller.setTarget(UUID.fromString(groupId), UUID.fromString(internalUuid), false);
+
+            // Pass a callback to remove row if promotion succeeds
+            controller.setOnSuccess(() -> membersList.getChildren().remove(row));
+
+            MainController.getInstance().showOverlay(overlay);
+        } catch (IOException e) {
+            e.printStackTrace();
+            MainController.getInstance().showAlert(
+                    "Error", "Could not load permissions scene.", Alert.AlertType.ERROR
+            );
+        }
+    }
+}

src/main/java/org/to/telegramfinalproject/UI/ManageAdminsController.java

@@ -0,0 +1,228 @@
+package org.to.telegramfinalproject.UI;
+
+import javafx.application.Platform;
+import javafx.fxml.FXML;
+import javafx.fxml.FXMLLoader;
+import javafx.geometry.Pos;
+import javafx.scene.Node;
+import javafx.scene.control.*;
+import javafx.scene.image.Image;
+import javafx.scene.image.ImageView;
+import javafx.scene.layout.*;
+import org.json.JSONArray;
+import org.json.JSONObject;
+import org.to.telegramfinalproject.Client.ActionHandler;
+import org.to.telegramfinalproject.Client.AvatarLocalResolver;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.UUID;
+
+public class ManageAdminsController {
+
+    @FXML private VBox adminsCard;
+    @FXML private Pane overlayBackground;
+    @FXML private Button closeButton;
+    @FXML private Button closeFooterButton;
+    @FXML private Button addAdminButton;
+
+    @FXML private ScrollPane adminsScroll;
+    @FXML private VBox adminsList;
+
+    private String groupId;
+
+    @FXML
+    private void initialize() {
+        closeButton.setOnAction(e -> MainController.getInstance().closeOverlay(adminsCard.getParent()));
+        closeFooterButton.setOnAction(e -> MainController.getInstance().closeOverlay(adminsCard.getParent()));
+        overlayBackground.setOnMouseClicked(e -> MainController.getInstance().closeOverlay(adminsCard.getParent()));
+
+        addAdminButton.setOnAction(e -> openAddAdminOverlay());
+
+        // Smooth scroll feel
+        adminsScroll.getStylesheets().add(getClass().getResource("/org/to/telegramfinalproject/CSS/scrollpane.css").toExternalForm());
+        adminsScroll.setPannable(true);
+        adminsScroll.setFitToWidth(true);
+        adminsScroll.setFitToHeight(false);
+        adminsScroll.getContent().setOnScroll(event -> {
+            double deltaY = event.getDeltaY() * 0.003;
+            adminsScroll.setVvalue(adminsScroll.getVvalue() - deltaY);
+        });
+    }
+
+    public void setGroupData(String groupId, JSONArray admins) {
+        this.groupId = groupId;
+
+        adminsList.getChildren().clear();
+
+        // Convert to list for sorting
+        List<JSONObject> adminList = new ArrayList<>();
+        for (int i = 0; i < admins.length(); i++) {
+            adminList.add(admins.getJSONObject(i));
+        }
+
+        // Sort: owner first, then admins
+        adminList.sort((a, b) -> {
+            String roleA = a.optString("role", "member");
+            String roleB = b.optString("role", "member");
+            if ("owner".equalsIgnoreCase(roleA) && !"owner".equalsIgnoreCase(roleB)) return -1;
+            if ("owner".equalsIgnoreCase(roleB) && !"owner".equalsIgnoreCase(roleA)) return 1;
+            return 0; // keep relative order for admins
+        });
+
+        // Add rows
+        for (JSONObject a : adminList) {
+            addAdminRow(a);
+        }
+    }
+
+    private void addAdminRow(JSONObject a) {
+        HBox row = new HBox(10);
+        row.getStyleClass().add("member-row");
+        row.setAlignment(Pos.CENTER_LEFT);
+
+        // Avatar
+        ImageView avatar = new ImageView();
+        avatar.setFitWidth(36);
+        avatar.setFitHeight(36);
+        avatar.setPreserveRatio(true);
+
+        String imgUrl = a.optString("image_url", "");
+        if (!imgUrl.isBlank()) {
+            Image img = AvatarLocalResolver.load(imgUrl);
+            if (img != null) avatar.setImage(img);
+        } else {
+            avatar.setImage(new Image(getClass().getResourceAsStream(
+                    "/org/to/telegramfinalproject/Avatars/default_user_profile.png"
+            )));
+        }
+
+        // Name + Status
+        VBox details = new VBox(2);
+        Label name = new Label(a.optString("profile_name", "Unknown"));
+        name.getStyleClass().add("member-name");
+
+        Label status = new Label(
+                a.optBoolean("is_online", false) ? "online"
+                        : "last seen recently"
+        );
+        status.getStyleClass().add("member-status");
+
+        details.getChildren().addAll(name, status);
+
+        Region spacer = new Region();
+        HBox.setHgrow(spacer, Priority.ALWAYS);
+
+        row.getChildren().addAll(avatar, details, spacer);
+
+        // Remove admin (cannot remove owner)
+        String role = a.optString("role", "admin");
+        if (!"owner".equalsIgnoreCase(role)) {
+            Button removeBtn = new Button("Remove");
+            removeBtn.getStyleClass().add("link-btn");
+            removeBtn.setOnAction(e -> removeAdmin(a.optString("user_id"), row));
+            row.getChildren().add(removeBtn);
+        }
+
+        adminsList.getChildren().add(row);
+
+        // User clicks on a admin --> open set admin permission's scene
+        row.setOnMouseClicked(e -> {
+            if (!"owner".equalsIgnoreCase(role)) {
+                try {
+                    // request current permissions from server
+                    JSONObject req = new JSONObject()
+                            .put("action", "get_group_admin_permissions")
+                            .put("group_id", groupId)
+                            .put("admin_id", a.optString("user_id"));
+
+                    JSONObject resp = ActionHandler.sendWithResponse(req);
+                    JSONObject oldPerms = (resp != null) ? resp.optJSONObject("permissions") : null;
+
+                    FXMLLoader loader = new FXMLLoader(getClass().getResource(
+                            "/org/to/telegramfinalproject/Fxml/set_group_admin_permissions.fxml"));
+                    Node overlay = loader.load();
+
+                    SetGroupAdminPermissionsController controller = loader.getController();
+                    controller.setTarget(
+                            UUID.fromString(groupId),
+                            UUID.fromString(a.optString("user_id")),
+                            true,
+                            oldPerms
+                    );
+
+                    MainController.getInstance().showOverlay(overlay);
+                } catch (IOException ex) {
+                    ex.printStackTrace();
+                    MainController.getInstance().showAlert("Error", "Could not open permissions scene.", Alert.AlertType.ERROR);
+                }
+            }
+        });
+    }
+
+    private void removeAdmin(String userId, HBox row) {
+        JSONObject req = new JSONObject()
+                .put("action", "remove_admin_from_group")
+                .put("group_id", groupId)
+                .put("target_user_id", userId);
+
+        System.out.println("Sending remove_admin_from_group request: " + req.toString(2));
+
+        row.setDisable(true);
+
+        new Thread(() -> {
+            JSONObject resp = ActionHandler.sendWithResponse(req);
+            if (resp != null && "success".equalsIgnoreCase(resp.optString("status"))) {
+                Platform.runLater(() -> adminsList.getChildren().remove(row));
+            } else {
+                Platform.runLater(() -> {
+                    row.setDisable(false);
+                    Alert a = new Alert(Alert.AlertType.ERROR,
+                            resp != null ? resp.optString("message", "Failed to remove admin.") : "No response from server.",
+                            ButtonType.OK);
+                    a.show();
+                });
+            }
+        }).start();
+    }
+
+    private void openAddAdminOverlay() {
+        try {
+            // === Query the server for full members list ===
+            JSONObject req = new JSONObject()
+                    .put("action", "view_group_members")
+                    .put("group_id", groupId);
+
+            JSONObject resp = ActionHandler.sendWithResponse(req);
+
+            if (resp == null || !"success".equalsIgnoreCase(resp.optString("status"))) {
+                MainController.getInstance().showAlert(
+                        "Error",
+                        "Could not fetch members.",
+                        Alert.AlertType.ERROR
+                );
+                return;
+            }
+
+            JSONObject data = resp.optJSONObject("data");
+            JSONArray members = (data != null) ? data.optJSONArray("members") : new JSONArray();
+
+            // === Load Add Admins FXML ===
+            FXMLLoader loader = new FXMLLoader(getClass().getResource(
+                    "/org/to/telegramfinalproject/Fxml/add_admins.fxml"));
+            Node overlay = loader.load();
+
+            AddAdminsController controller = loader.getController();
+            controller.setGroupData(groupId, members);  // send raw members, filtering is done in AddAdminsController
+
+            MainController.getInstance().showOverlay(overlay);
+
+        } catch (IOException e) {
+            e.printStackTrace();
+            MainController.getInstance().showAlert(
+                    "Error", "Could not load Add Admins scene.", Alert.AlertType.ERROR
+            );
+        }
+    }
+}

src/main/java/org/to/telegramfinalproject/UI/ManageGroupController.java

@@ -8,12 +8,14 @@ import javafx.scene.image.Image;
 import javafx.scene.image.ImageView;
 import javafx.scene.layout.*;
 import javafx.stage.FileChooser;
+import org.json.JSONArray;
 import org.json.JSONObject;
 import org.to.telegramfinalproject.Client.ActionHandler;
 
 import java.io.File;
 import java.io.IOException;
 import java.util.Objects;
+import java.util.UUID;
 
 public class ManageGroupController {
 
@@ -44,18 +46,34 @@ public class ManageGroupController {
         changePicButton.setOnAction(e -> choosePicture());
         saveButton.setOnAction(e -> saveChanges());
 
-        manageAdminsButton.setOnAction(e -> openManageAdminsScene());
+        manageAdminsButton.setOnAction(e -> openManageAdminsScene(data));
         manageMembersButton.setOnAction(e -> openManageMembersScene(data));
     }
 
-    private void openManageAdminsScene() {
+    private void openManageAdminsScene(JSONObject data) {
         try {
             FXMLLoader loader = new FXMLLoader(getClass().getResource(
                     "/org/to/telegramfinalproject/Fxml/manage_admins.fxml"));
             Node overlay = loader.load();
 
-//            ManageAdminsController controller = loader.getController();
+            ManageAdminsController controller = loader.getController();
-//            controller.setGroupId(UUID.fromString(groupId));
+
+            String gid = data.optString("internal_uuid");
+            JSONArray members = data.optJSONArray("members");
+            JSONArray admins = new JSONArray();
+
+            // filter only admins
+            if (members != null) {
+                for (int i = 0; i < members.length(); i++) {
+                    JSONObject m = members.getJSONObject(i);
+                    String role = m.optString("role", "member");
+                    if ("admin".equalsIgnoreCase(role) || "owner".equalsIgnoreCase(role)) {
+                        admins.put(m);
+                    }
+                }
+            }
+
+            controller.setGroupData(gid, admins);
 
             MainController.getInstance().showOverlay(overlay);
         } catch (IOException e) {
@@ -101,8 +119,8 @@ public class ManageGroupController {
             groupImage.setImage(new Image(originalImageUrl, true));
         }
 
-        adminCount.setText(String.valueOf(countRole(data, "admin")));
+        adminCount.setText(String.valueOf(countRole(data, "admin") + 1));
-        memberCount.setText(String.valueOf(countRole(data, "member")));
+        memberCount.setText(String.valueOf(countRole(data, "member") + Integer.parseInt(adminCount.getText())));
     }
 
     private int countRole(JSONObject groupData, String role) {
@@ -112,7 +130,7 @@ public class ManageGroupController {
         for (int i = 0; i < arr.length(); i++) {
             if (role.equalsIgnoreCase(arr.getJSONObject(i).optString("role"))) count++;
         }
-        return count + 1;
+        return count;
     }
 
     private void choosePicture() {

src/main/java/org/to/telegramfinalproject/UI/SetGroupAdminPermissionsController.java

@@ -0,0 +1,148 @@
+package org.to.telegramfinalproject.UI;
+
+import javafx.application.Platform;
+import javafx.fxml.FXML;
+import javafx.scene.control.*;
+import javafx.scene.layout.Pane;
+import javafx.scene.layout.VBox;
+import org.json.JSONObject;
+import org.to.telegramfinalproject.Client.ActionHandler;
+
+import java.util.UUID;
+
+public class SetGroupAdminPermissionsController {
+
+    @FXML private VBox permissionsCard;
+    @FXML private Pane overlayBackground;
+    @FXML private Button closeButton;
+    @FXML private Button cancelButton;
+    @FXML private Button saveButton;
+
+    @FXML private CheckBox canAddMember;
+    @FXML private CheckBox canRemoveMember;
+    @FXML private CheckBox canAddAdmin;
+    @FXML private CheckBox canRemoveAdmin;
+    @FXML private CheckBox canEditGroup;
+
+    private UUID groupId;
+    private UUID userId;
+    private Runnable onSuccess;
+
+    private JSONObject oldPermissions; // store existing permissions
+    private boolean isEditMode = false; // true if editing existing admin
+
+    public void setTarget(UUID groupId, UUID userId, boolean isEditMode) {
+        this.groupId = groupId;
+        this.userId = userId;
+        this.isEditMode = isEditMode;
+
+        if (isEditMode) {
+            loadCurrentPermissions();
+        }
+    }
+
+    public void setTarget(UUID groupId, UUID userId, boolean isEditMode, JSONObject oldPermissions) {
+        this.groupId = groupId;
+        this.userId = userId;
+        this.isEditMode = isEditMode;
+        this.oldPermissions = oldPermissions;
+    }
+
+    public void setOnSuccess(Runnable r) {
+        this.onSuccess = r;
+    }
+
+    @FXML
+    private void initialize() {
+        closeButton.setOnAction(e -> MainController.getInstance().closeOverlay(permissionsCard.getParent()));
+        cancelButton.setOnAction(e -> MainController.getInstance().closeOverlay(permissionsCard.getParent()));
+        overlayBackground.setOnMouseClicked(e -> MainController.getInstance().closeOverlay(permissionsCard.getParent()));
+
+        saveButton.setOnAction(e -> savePermissions());
+
+        // Register for dark mode updates
+        Platform.runLater(() -> {
+            if (permissionsCard.getScene() != null) {
+                ThemeManager.getInstance().registerScene(permissionsCard.getScene());
+            }
+        });
+    }
+
+    private void loadCurrentPermissions() {
+        JSONObject req = new JSONObject()
+                .put("action", "get_group_admin_permissions")
+                .put("group_id", groupId.toString())
+                .put("admin_id", userId.toString());
+
+        JSONObject resp = ActionHandler.sendWithResponse(req);
+        System.out.println("Permissions response: " + resp); // full server response
+
+        if (resp != null && "success".equalsIgnoreCase(resp.optString("status"))) {
+            // "data" is an object containing { "permissions": { ... } }
+            JSONObject data = resp.optJSONObject("data");
+            System.out.println("Data object: " + data);
+
+            if (data != null) {
+                JSONObject perms = data.optJSONObject("permissions");
+                System.out.println("Extracted permissions object: " + perms);
+
+                if (perms != null) {
+                    oldPermissions = perms;
+
+                    // Update checkboxes safely on FX thread
+                    Platform.runLater(() -> {
+                        canAddMember.setSelected(perms.optBoolean("can_add_member", false));
+                        canRemoveMember.setSelected(perms.optBoolean("can_remove_member", false));
+                        canAddAdmin.setSelected(perms.optBoolean("can_add_admin", false));
+                        canRemoveAdmin.setSelected(perms.optBoolean("can_remove_admin", false));
+                        canEditGroup.setSelected(perms.optBoolean("can_edit_group", false));
+                    });
+                } else {
+                    System.out.println("⚠️ Permissions object was null inside data.");
+                }
+            } else {
+                System.out.println("⚠️ Data object was null in response.");
+            }
+        } else {
+            System.out.println("⚠️ Response was null or status != success");
+        }
+    }
+
+    private void savePermissions() {
+        JSONObject newPermissions = new JSONObject()
+                .put("can_add_member", canAddMember.isSelected())
+                .put("can_remove_member", canRemoveMember.isSelected())
+                .put("can_add_admin", canAddAdmin.isSelected())
+                .put("can_remove_admin", canRemoveAdmin.isSelected())
+                .put("can_edit_group", canEditGroup.isSelected());
+
+        JSONObject req;
+        if (isEditMode) {
+            // --- Editing existing admin permissions ---
+            req = new JSONObject()
+                    .put("action", "edit_admin_permissions")
+                    .put("chat_id", groupId.toString())
+                    .put("chat_type", "group") // since this controller is only for groups
+                    .put("admin_id", userId.toString())
+                    .put("permissions", newPermissions);
+        } else {
+            // --- Adding a new admin ---
+            req = new JSONObject()
+                    .put("action", "add_admin_to_group")
+                    .put("group_id", groupId.toString())
+                    .put("user_id", userId.toString())
+                    .put("permissions", newPermissions);
+        }
+
+        JSONObject resp = ActionHandler.sendWithResponse(req);
+        if (resp != null && "success".equalsIgnoreCase(resp.optString("status"))) {
+            MainController.getInstance().closeOverlay(permissionsCard.getParent());
+            if (onSuccess != null) onSuccess.run(); // update UI after success
+        } else {
+            Alert a = new Alert(Alert.AlertType.ERROR,
+                    resp != null ? resp.optString("message") : "Failed to save admin permissions.",
+                    ButtonType.OK);
+            a.show();
+        }
+    }
+}

src/main/resources/org/to/telegramfinalproject/CSS/dark_theme.css

@@ -1337,7 +1337,7 @@
     -fx-text-fill: #ffffff;
     -fx-padding: 4 0 2 0;
     -fx-border-color: #333;
-    -fx-border-width: 0 0 1 0;
+    -fx-border-width: 0 0 0 0;
 }
 
 .tf-item-title {
@@ -1364,3 +1364,49 @@
     -fx-text-fill: #ffb74d;
     -fx-background-color: #e65100;
 }
+
+/* Permissions card checkboxes */
+.check-box {
+    -fx-font-size: 13px;
+    -fx-text-fill: -fx-text-base-color;
+}
+
+/* === Permissions overlay === */
+.permissions-card {
+    -fx-background-color: #1f1f1f;
+    -fx-background-radius: 12;
+    -fx-padding: 16;
+}
+
+/* Checkboxes */
+.permissions-card .check-box {
+    -fx-text-fill: #e0e0e0;
+}
+
+.permissions-card .check-box:selected .box {
+    -fx-background-color: #3390ec;
+    -fx-border-color: #3390ec;
+}
+
+.permissions-card .check-box .box {
+    -fx-background-color: #2c2c2c;
+    -fx-border-color: #555;
+    -fx-border-radius: 4;
+}
+
+/* Buttons */
+.permissions-card .button {
+    -fx-font-size: 13px;
+    -fx-background-radius: 6;
+}
+
+.permissions-card .button.primary-btn {
+    -fx-background-color: #3390ec;
+    -fx-text-fill: white;
+}
+
+.permissions-card .button.secondary-btn {
+    -fx-background-color: transparent;
+    -fx-border-color: #555;
+    -fx-text-fill: #aaa;
+}

src/main/resources/org/to/telegramfinalproject/CSS/light_theme.css

@@ -1315,7 +1315,7 @@
     -fx-text-fill: #2c2c2c;
     -fx-padding: 4 0 2 0;
     -fx-border-color: #ddd;
-    -fx-border-width: 0 0 1 0;
+    -fx-border-width: 0 0 0 0;
 }
 
 .tf-item-title {
@@ -1341,3 +1341,49 @@
     -fx-text-fill: #e65100;
     -fx-background-color: #fff3e0;
 }
+
+/* Permissions card checkboxes */
+.check-box {
+    -fx-font-size: 13px;
+    -fx-text-fill: -fx-text-base-color;
+}
+
+/* === Permissions overlay === */
+.permissions-card {
+    -fx-background-color: white;
+    -fx-background-radius: 12;
+    -fx-padding: 16;
+}
+
+/* Checkboxes */
+.permissions-card .check-box {
+    -fx-text-fill: #222;
+}
+
+.permissions-card .check-box:selected .box {
+    -fx-background-color: #3390ec; /* blue tick */
+    -fx-border-color: #3390ec;
+}
+
+.permissions-card .check-box .box {
+    -fx-background-color: white;
+    -fx-border-color: #ccc;
+    -fx-border-radius: 4;
+}
+
+/* Buttons */
+.permissions-card .button {
+    -fx-font-size: 13px;
+    -fx-background-radius: 6;
+}
+
+.permissions-card .button.primary-btn {
+    -fx-background-color: #3390ec;
+    -fx-text-fill: white;
+}
+
+.permissions-card .button.secondary-btn {
+    -fx-background-color: transparent;
+    -fx-border-color: #ccc;
+    -fx-text-fill: #222;
+}

src/main/resources/org/to/telegramfinalproject/Fxml/add_admins.fxml

@@ -0,0 +1,48 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<?import javafx.scene.layout.*?>
+<?import javafx.scene.control.*?>
+<?import javafx.scene.image.ImageView?>
+<?import javafx.geometry.Insets?>
+
+<StackPane xmlns:fx="http://javafx.com/fxml"
+           fx:controller="org.to.telegramfinalproject.UI.AddAdminsController"
+           styleClass="overlay-root">
+
+    <!-- Background -->
+    <Pane fx:id="overlayBackground" styleClass="overlay-background"/>
+
+    <!-- Card -->
+    <VBox fx:id="addAdminsCard" styleClass="profile-card" spacing="12"
+          prefWidth="340" maxWidth="340"
+          prefHeight="480" maxHeight="480">
+
+        <!-- Header -->
+        <HBox alignment="CENTER_LEFT" spacing="10">
+            <Label text="Add Admins" styleClass="profile-title" HBox.hgrow="ALWAYS"/>
+            <Pane HBox.hgrow="ALWAYS"/>
+            <Button fx:id="closeButton" styleClass="icon-button" text="✕"/>
+        </HBox>
+
+        <Separator styleClass="section-separator"/>
+
+        <!-- Members list -->
+        <ScrollPane fx:id="membersScroll" fitToWidth="true" VBox.vgrow="ALWAYS"
+                    styleClass="member-scroll">
+            <content>
+                <VBox fx:id="membersList" spacing="10">
+                    <padding>
+                        <Insets top="10" right="10" bottom="10" left="10"/>
+                    </padding>
+                </VBox>
+            </content>
+        </ScrollPane>
+
+        <Separator styleClass="section-separator"/>
+
+        <!-- Footer -->
+        <HBox spacing="10" alignment="CENTER_RIGHT">
+            <Button fx:id="closeFooterButton" text="Close" styleClass="secondary-btn"/>
+        </HBox>
+    </VBox>
+</StackPane>

src/main/resources/org/to/telegramfinalproject/Fxml/manage_admins.fxml

@@ -0,0 +1,43 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<?import javafx.scene.layout.*?>
+<?import javafx.scene.control.*?>
+<?import javafx.scene.image.ImageView?>
+
+<StackPane xmlns:fx="http://javafx.com/fxml"
+           fx:controller="org.to.telegramfinalproject.UI.ManageAdminsController"
+           styleClass="overlay-root">
+
+    <!-- Background -->
+    <Pane fx:id="overlayBackground" styleClass="overlay-background"/>
+
+    <!-- Card -->
+    <VBox fx:id="adminsCard" styleClass="profile-card" spacing="12"
+          prefWidth="360" maxWidth="360"
+          prefHeight="500" maxHeight="500">
+
+        <!-- Header -->
+        <HBox alignment="CENTER_LEFT" spacing="10">
+            <Label text="Administrators" styleClass="profile-title" HBox.hgrow="ALWAYS"/>
+            <Pane HBox.hgrow="ALWAYS"/>
+            <Button fx:id="closeButton" styleClass="icon-button" text="✕"/>
+        </HBox>
+
+        <Separator styleClass="section-separator"/>
+
+        <!-- Scroll list -->
+        <ScrollPane fx:id="adminsScroll" fitToWidth="true" styleClass="member-scroll" VBox.vgrow="ALWAYS">
+            <content>
+                <VBox fx:id="adminsList" spacing="10"/>
+            </content>
+        </ScrollPane>
+
+        <Separator styleClass="section-separator"/>
+
+        <!-- Footer -->
+        <HBox spacing="10" alignment="CENTER_RIGHT">
+            <Button fx:id="addAdminButton" text="Add admin" styleClass="secondary-btn" HBox.hgrow="ALWAYS"/>
+            <Button fx:id="closeFooterButton" text="Close" styleClass="primary-btn"/>
+        </HBox>
+    </VBox>
+</StackPane>

src/main/resources/org/to/telegramfinalproject/Fxml/set_group_admin_permissions.fxml

@@ -0,0 +1,46 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<?import javafx.scene.layout.*?>
+<?import javafx.scene.control.*?>
+
+<StackPane xmlns:fx="http://javafx.com/fxml"
+           fx:controller="org.to.telegramfinalproject.UI.SetGroupAdminPermissionsController"
+           styleClass="overlay-root">
+
+    <!-- Background -->
+    <Pane fx:id="overlayBackground" styleClass="overlay-background"/>
+
+    <!-- Card -->
+    <VBox fx:id="permissionsCard" styleClass="profile-card" spacing="16"
+          prefWidth="320" maxWidth="320"
+          prefHeight="350" maxHeight="350">
+
+        <!-- Header -->
+        <HBox alignment="CENTER_LEFT" spacing="10">
+            <Label text="Set Admin Permissions" styleClass="profile-title" HBox.hgrow="ALWAYS"/>
+            <Pane HBox.hgrow="ALWAYS"/>
+            <Button fx:id="closeButton" styleClass="icon-button" text="✕"/>
+        </HBox>
+
+        <Separator/>
+
+        <!-- Permissions list -->
+        <VBox spacing="8">
+            <CheckBox fx:id="canAddMember" text="Can add members"/>
+            <CheckBox fx:id="canRemoveMember" text="Can remove members"/>
+            <CheckBox fx:id="canAddAdmin" text="Can add admins"/>
+            <CheckBox fx:id="canRemoveAdmin" text="Can remove admins"/>
+            <CheckBox fx:id="canEditGroup" text="Can edit group"/>
+        </VBox>
+
+        <Pane VBox.vgrow="ALWAYS"/>
+
+        <Separator/>
+
+        <!-- Footer -->
+        <HBox alignment="CENTER_RIGHT" spacing="10">
+            <Button fx:id="cancelButton" text="Cancel" styleClass="secondary-btn"/>
+            <Button fx:id="saveButton" text="Save" styleClass="primary-btn"/>
+        </HBox>
+    </VBox>
+</StackPane>