using UnityEngine;
using UnityEngine.UIElements;
using UnityEngine.Audio;
using UnityEngine.InputSystem;
using System.Collections.Generic;
using System.Linq;
using System;
using System.Threading.Tasks;
using OnlyScove.Scripts;
using Hallucinate.Audio;
using PrimeTween;

namespace Hallucinate.UI
{
    public class SettingsController : BaseUIController
    {
        private VisualElement _sidebar;
        private VisualElement _tabsColumn;
        private Label _tabTitle;
        private ScrollView _content;
        private Dictionary<string, Button> _tabButtons = new Dictionary<string, Button>();
        private string _activeTab = "GENERAL";

        private Tween _hoverTimer;
        private bool _isExpanded;

        // Osu Style Scroll Tracking
        private readonly Dictionary<string, VisualElement> _sectionHeaders = new Dictionary<string, VisualElement>();
        private bool _isManualScrolling;

        // Advanced Mouse Metrics
        private Label _mouseMetricsLabel;

        // FPS State
        private bool _fpsVisible;

        // Hover Tracking for Arrow Key Slider Control
        private Slider _hoveredSlider;
        private Action<float> _hoveredOnChanged;
        private float _sliderMin, _sliderMax;

        // Audio Slider Tracking for Sync
        private readonly Dictionary<string, (Slider slider, TextField input)> _audioSliders = new Dictionary<string, (Slider slider, TextField input)>();

        // Osu-style Volume Overlay
        private VisualElement _volumeContainer;
        private VisualElement _masterRing;
        private Label _masterVolLabel;
        private Dictionary<string, (VisualElement ring, Label label)> _subRings = new Dictionary<string, (VisualElement, Label)>();
        private string _hoveredSubVolume = null;
        private float _masterVol = 80f;
        private int _overlayActiveCount = 0;

        public override void Initialize(VisualElement uxmlRoot, UIManager manager)
        {
            base.Initialize(uxmlRoot, manager);

            _sidebar = root.Q<VisualElement>("Sidebar");
            _tabsColumn = root.Q<VisualElement>("TabsColumn");
            _tabTitle = root.Q<Label>("TabTitle");
            _content = root.Q<ScrollView>("SettingsContent");

            // Smart Sidebar Hover Logic
            _tabsColumn.RegisterCallback<PointerEnterEvent>(OnSidebarPointerEnter);
            _tabsColumn.RegisterCallback<PointerLeaveEvent>(OnSidebarPointerLeave);

            // Scroll Tracking cho Osu Style
            _content.verticalScroller.valueChanged += OnScrollValueChanged;

            // Đăng ký sự kiện đổi ngôn ngữ
            if (LocalizationManager.Instance != null)
            {
                LocalizationManager.Instance.OnLanguageChanged += OnLanguageChanged;
            }

            // Global Volume Catch
            uiManager.Root.RegisterCallback<WheelEvent>(OnMouseWheel, TrickleDown.TrickleDown);
            SetupHierarchicalVolumeOverlay();

            root.RegisterCallback<PointerDownEvent>(evt => {
                if (evt.target == root) uiManager.ToggleSettings();
            });

            root.RegisterCallback<KeyDownEvent>(OnKeyDown);

            SetupTab("GeneralTab", "GENERAL");
            SetupTab("VideoTab", "VIDEO");
            SetupTab("SoundTab", "SOUND");
            SetupTab("ControlTab", "CONTROL");

            var closeBtn = root.Q<Button>("CloseSettingsBtn");
            if (closeBtn != null) closeBtn.clicked += () => uiManager.ToggleSettings();

            _masterVol = PlayerPrefs.GetFloat("MasterVolume", 80f);
            
            // Render ban đầu
            RefreshUI();
            ApplyVideoSettings();
        }

        private void OnLanguageChanged()
        {
            // Lưu lại vị trí cuộn hiện tại
            float currentScroll = _content.scrollOffset.y;
            RefreshUI();
            // Khôi phục vị trí cuộn sau một frame để layout kịp cập nhật
            _content.schedule.Execute(() => _content.scrollOffset = new Vector2(0, currentScroll)).StartingIn(10);
        }

        private void RefreshUI()
        {
            RenderAllSettings();
            UpdateTabLabels();
            HighlightTab(_activeTab);
        }

        private void UpdateTabLabels()
        {
            foreach (var kvp in _tabButtons)
            {
                var label = kvp.Value.Q<Label>(className: "tab-label");
                if (label != null) label.text = GetT(kvp.Key);
            }
        }

        private string GetT(string key) => LocalizationManager.Instance != null ? LocalizationManager.Instance.GetLocalizedString(key) : key;

        private void OnSidebarPointerEnter(PointerEnterEvent evt)
        {
            _hoverTimer.Stop();
            ExpandSidebar();
        }

        private void OnSidebarPointerLeave(PointerLeaveEvent evt)
        {
            _hoverTimer.Stop();
            CollapseSidebar();
        }

        private void ExpandSidebar()
        {
            if (_isExpanded) return;
            _isExpanded = true;
            _tabsColumn.AddToClassList("sidebar-expanded");
            Tween.Custom(_tabsColumn.resolvedStyle.width, 240f, duration: 0.5f, ease: Ease.OutQuart, onValueChange: val => _tabsColumn.style.width = val);
        }

        private void CollapseSidebar()
        {
            if (!_isExpanded) return;
            _isExpanded = false;
            _tabsColumn.RemoveFromClassList("sidebar-expanded");
            Tween.Custom(_tabsColumn.resolvedStyle.width, 80f, duration: 0.45f, ease: Ease.OutQuart, onValueChange: val => _tabsColumn.style.width = val);
        }

        private void RenderAllSettings()
        {
            _content.Clear();
            _sectionHeaders.Clear();

            RenderGeneralTab();
            RenderVideoTab();
            RenderSoundTab();
            RenderControlTab();
            
            // Thêm khoảng trống cuối để cuộn thoải mái
            var spacer = new VisualElement { style = { height = 200 } };
            _content.Add(spacer);
        }

        private void SetupTab(string btnName, string tabId)
        {
            var btn = root.Q<Button>(btnName);
            if (btn != null) 
            { 
                _tabButtons[tabId] = btn; 
                btn.clicked += () => ScrollToSection(tabId); 
            }
        }

        private void ScrollToSection(string tabId)
        {
            if (!_sectionHeaders.TryGetValue(tabId, out var header)) return;
            
            _isManualScrolling = true;
            HighlightTab(tabId);

            float targetY = header.layout.y;
            Tween.Custom(_content.scrollOffset.y, targetY, duration: 0.5f, ease: Ease.OutQuart, onValueChange: val => {
                _content.scrollOffset = new Vector2(0, val);
            }).OnComplete(() => _isManualScrolling = false);
        }

        private void OnScrollValueChanged(float val)
        {
            if (_isManualScrolling) return;

            string currentActive = "GENERAL";
            float minDistance = float.MaxValue;

            foreach (var kvp in _sectionHeaders)
            {
                float dist = Math.Abs(kvp.Value.worldBound.y - _content.worldBound.y);
                if (dist < minDistance)
                {
                    minDistance = dist;
                    currentActive = kvp.Key;
                }
            }

            if (_activeTab != currentActive) HighlightTab(currentActive);
        }

        private void HighlightTab(string tabId)
        {
            _activeTab = tabId;
            _tabTitle.text = GetT(tabId);
            foreach (var kvp in _tabButtons)
            {
                if (kvp.Key == tabId) kvp.Value.AddToClassList("active-tab");
                else kvp.Value.RemoveFromClassList("active-tab");
            }
        }

        private void RenderGeneralTab()
        {
            var header = CreateSection("GENERAL");
            _sectionHeaders["GENERAL"] = header;
            _content.Add(header);
            
            _content.Add(CreateSubSection("ACCOUNT"));
            var userRow = new VisualElement { style = { flexDirection = FlexDirection.Row, alignItems = Align.Center, marginBottom = 10 } };
            var loggedInLabel = new Label(GetT("LOGGED_IN_AS")); loggedInLabel.AddToClassList("text-body");
            userRow.Add(loggedInLabel);
            userRow.Add(new Label(PlayerPrefs.GetString("Username", "Guest")) { style = { color = Color.cyan, marginLeft = 5, unityFontStyleAndWeight = FontStyle.Bold } });
            _content.Add(userRow);

            _content.Add(CreateSubSection("LANGUAGE"));
            var langDropdown = new DropdownField(new List<string> { "English", "Tiếng Việt" }, LocalizationManager.Instance?.CurrentLanguage == "vi" ? 1 : 0);
            langDropdown.AddToClassList("custom-dropdown");
            langDropdown.RegisterValueChangedCallback(evt => {
                LocalizationManager.Instance?.LoadLanguage(evt.newValue == "Tiếng Việt" ? "vi" : "en");
            });
            _content.Add(langDropdown);

            _content.Add(CreateSubSection("UPDATES"));
            var versionBox = new VisualElement { style = { flexDirection = FlexDirection.Row, alignItems = Align.Center } };
            var versionLabel = new Label($"{GetT("VERSION")} {Application.version}"); versionLabel.AddToClassList("text-body");
            versionBox.Add(versionLabel);
            var checkBtn = new Button { text = GetT("CHECK_FOR_UPDATES") }; checkBtn.AddToClassList("button-spring");
            checkBtn.clicked += () => checkBtn.text = GetT("UP_TO_DATE");
            versionBox.Add(checkBtn);
            _content.Add(versionBox);

            _content.Add(CreateSubSection("CURSOR_MOUSE"));
            _content.Add(CreateSliderWithInput(GetT("CURSOR_SIZE"), 10, 150, PlayerPrefs.GetFloat("CursorSize", 40), val => uiManager.SetCursorSize(val)));
            var trailToggle = new Toggle(GetT("ENABLE_TRAIL")) { value = PlayerPrefs.GetInt("CursorTrail", 1) == 1 };
            trailToggle.RegisterValueChangedCallback(evt => uiManager.SetCursorTrail(evt.newValue));
            _content.Add(trailToggle);
            var rippleToggle = new Toggle(GetT("ENABLE_RIPPLES")) { value = PlayerPrefs.GetInt("CursorRipples", 1) == 1 };
            rippleToggle.RegisterValueChangedCallback(evt => uiManager.SetCursorRipples(evt.newValue));
            _content.Add(rippleToggle);
            _content.Add(CreateSliderWithInput(GetT("SENSITIVITY"), 0.1f, 5.0f, PlayerPrefs.GetFloat("MouseSensitivity", 1.0f), val => uiManager.SetMouseSensitivity(val)));
            _mouseMetricsLabel = new Label($"{GetT("MOUSE_LATENCY")} report: 0/sec latency: 0ms") { style = { fontSize = 11, color = Color.gray, marginTop = 5 } };
            _content.Add(_mouseMetricsLabel);
        }

        private void RenderVideoTab()
        {
            var header = CreateSection("VIDEO");
            _sectionHeaders["VIDEO"] = header;
            _content.Add(header);

            _content.Add(CreateSubSection("RENDERER"));
            var frameLimit = new DropdownField(GetT("FRAME_LIMITER"), new List<string> { "VSync", "Power Saving", "Optimal", "Unlimited" }, PlayerPrefs.GetInt("FrameLimiter", 2));
            frameLimit.RegisterValueChangedCallback(evt => ApplyFrameLimit(frameLimit.index));
            _content.Add(frameLimit);
            var fpsToggle = new Toggle(GetT("SHOW_FPS")) { value = _fpsVisible };
            fpsToggle.RegisterValueChangedCallback(evt => { _fpsVisible = evt.newValue; PlayerPrefs.SetInt("ShowFPS", _fpsVisible ? 1 : 0); PerformanceOverlay.SetVisible(_fpsVisible); });
            _content.Add(fpsToggle);
            
            _content.Add(CreateSubSection("LAYOUT"));
            Resolution native = Screen.currentResolution;
            var resList = Screen.resolutions.Select(r => $"{r.width}x{r.height}").Distinct().Select(s => s == $"{native.width}x{native.height}" ? s + " (native)" : s).ToList();
            string currentResStr = $"{Screen.width}x{Screen.height}";
            int currentResIdx = resList.FindIndex(s => s.StartsWith(currentResStr));
            if (currentResIdx == -1) currentResIdx = resList.FindIndex(s => s.Contains("native"));
            var resDropdown = new DropdownField(GetT("RESOLUTION"), resList, currentResIdx);
            resDropdown.RegisterValueChangedCallback(evt => {
                string[] parts = evt.newValue.Split(' ')[0].Split('x');
                int w = int.Parse(parts[0]), h = int.Parse(parts[1]);
                Screen.SetResolution(w, h, Screen.fullScreen);
                PlayerPrefs.SetInt("ScreenWidth", w); PlayerPrefs.SetInt("ScreenHeight", h);
            });
            _content.Add(resDropdown);
            var fullToggle = new Toggle(GetT("FULLSCREEN")) { value = Screen.fullScreen };
            fullToggle.RegisterValueChangedCallback(evt => { Screen.fullScreen = evt.newValue; PlayerPrefs.SetInt("Fullscreen", evt.newValue ? 1 : 0); });
            _content.Add(fullToggle);
            _content.Add(CreateSliderWithInput(GetT("BACKGROUND_DIM"), 0, 100, PlayerPrefs.GetFloat("BackgroundDim", 50), val => ApplyBackgroundDim(val)));
            _content.Add(CreateSliderWithInput(GetT("UI_SCALE"), 0.5f, 2.0f, PlayerPrefs.GetFloat("UIScale", 1.0f), val => uiManager.SetUIScale(val)));
        }

        private void RenderSoundTab()
        {
            var header = CreateSection("SOUND");
            _sectionHeaders["SOUND"] = header;
            _content.Add(header);

            _audioSliders.Clear();
            _content.Add(CreateSubSection("AUDIO_VOLUMES"));
            _content.Add(CreateAudioSlider(GetT("MASTER"), "MasterVolume"));
            _content.Add(CreateAudioSlider(GetT("MUSIC"), "MusicVolume"));
            _content.Add(CreateAudioSlider(GetT("VFX"), "VFXVolume"));
            _content.Add(CreateAudioSlider(GetT("PLAYER"), "PlayerVolume"));
            _content.Add(CreateAudioSlider(GetT("UI"), "UIVolume"));
            _content.Add(new Label(GetT("SCROLL_HINT")) { style = { marginTop = 20, color = Color.gray, fontSize = 12 } });
        }

        private void RenderControlTab()
        {
            var header = CreateSection("CONTROL");
            _sectionHeaders["CONTROL"] = header;
            _content.Add(header);

            _content.Add(CreateSubSection("KEY_BINDINGS"));
            if (uiManager.InputReader?.InputActions == null) return;
            foreach (var map in uiManager.InputReader.InputActions.actionMaps)
            {
                var mapHeader = new Label(map.name.ToUpper()) { style = { fontSize = 14, unityFontStyleAndWeight = FontStyle.Bold, color = Color.cyan, marginTop = 15, marginBottom = 5 } };
                _content.Add(mapHeader);
                foreach (var action in map.actions)
                {
                    if (action.name == "Look" || action.name == "Scroll" || action.name == "Navigate" || action.name == "Point" || action.name == "Click") continue;
                    if (action.bindings.Any(b => b.isComposite))
                    {
                        for (int i = 0; i < action.bindings.Count; i++)
                            if (action.bindings[i].isPartOfComposite && action.bindings[i].groups.Contains("Keyboard&Mouse"))
                                _content.Add(CreateRebindRow(action, i, $"{action.name} {action.bindings[i].name}".ToUpper()));
                    }
                    else
                    {
                        int idx = action.bindings.ToList().FindIndex(b => b.groups.Contains("Keyboard&Mouse"));
                        if (idx != -1) _content.Add(CreateRebindRow(action, idx, action.name.ToUpper()));
                    }
                }
            }
            var resetBtn = new Button { text = GetT("RESET_ALL") }; resetBtn.AddToClassList("button-spring"); resetBtn.style.marginTop = 30; resetBtn.style.alignSelf = Align.Center;
            resetBtn.clicked += () => { uiManager.InputReader.ResetBindings(); RefreshUI(); };
            _content.Add(resetBtn);
        }

        private void ApplyVideoSettings()
        {
            int frameLimitIdx = PlayerPrefs.GetInt("FrameLimiter", 2);
            ApplyFrameLimit(frameLimitIdx);
            _fpsVisible = PlayerPrefs.GetInt("ShowFPS", 0) == 1;
            PerformanceOverlay.SetVisible(_fpsVisible);
            float dim = PlayerPrefs.GetFloat("BackgroundDim", 50f);
            ApplyBackgroundDim(dim);
        }

        private void ApplyFrameLimit(int index)
        {
            switch (index)
            {
                case 0: QualitySettings.vSyncCount = 1; Application.targetFrameRate = -1; break;
                case 1: QualitySettings.vSyncCount = 0; Application.targetFrameRate = 60; break;
                case 2: QualitySettings.vSyncCount = 0; Application.targetFrameRate = 144; break;
                case 3: QualitySettings.vSyncCount = 0; Application.targetFrameRate = 999; break;
            }
            PlayerPrefs.SetInt("FrameLimiter", index);
        }

        private void ApplyBackgroundDim(float value)
        {
            PlayerPrefs.SetFloat("BackgroundDim", value);
            var dimOverlay = uiManager.Root.Q<VisualElement>("BackgroundDimOverlay");
            if (dimOverlay != null) dimOverlay.style.backgroundColor = new Color(0, 0, 0, value / 100f);
        }

        private void SetupHierarchicalVolumeOverlay()
        {
            _volumeContainer = new VisualElement { name = "GlobalVolumeOverlay" };
            _volumeContainer.style.position = Position.Absolute;
            _volumeContainer.style.right = 50; _volumeContainer.style.bottom = 50;
            _volumeContainer.style.width = 300; _volumeContainer.style.height = 300;
            _volumeContainer.style.display = DisplayStyle.None;
            _volumeContainer.pickingMode = PickingMode.Ignore;
            uiManager.Root.Add(_volumeContainer);

            _masterRing = CreateRing("Master", 120, cyan: true);
            _masterRing.style.right = 0; _masterRing.style.bottom = 0;
            _masterVolLabel = _masterRing.Q<Label>();
            _volumeContainer.Add(_masterRing);

            string[] subs = { "MusicVolume", "VFXVolume", "PlayerVolume", "UIVolume" };
            string[] shortNames = { "MUS", "VFX", "PLY", "UI" };
            for (int i = 0; i < subs.Length; i++)
            {
                var ring = CreateRing(shortNames[i], 70, false);
                float angle = (i * 30f) * Mathf.Deg2Rad; 
                float radius = 140f;
                ring.style.right = 25 + Mathf.Sin(angle) * radius;
                ring.style.bottom = 25 + Mathf.Cos(angle) * radius;
                string key = subs[i];
                ring.RegisterCallback<PointerEnterEvent>(evt => _hoveredSubVolume = key);
                ring.RegisterCallback<PointerLeaveEvent>(evt => { if (_hoveredSubVolume == key) _hoveredSubVolume = null; });
                ring.pickingMode = PickingMode.Position;
                _subRings[key] = (ring, ring.Q<Label>());
                _volumeContainer.Add(ring);
            }
        }

        private VisualElement CreateRing(string text, float size, bool cyan)
        {
            var ring = new VisualElement();
            ring.style.width = size; ring.style.height = size;
            ring.style.backgroundColor = new Color(0, 0, 0, 0.85f);
            var radius = size / 2;
            ring.style.borderTopLeftRadius = radius; ring.style.borderTopRightRadius = radius;
            ring.style.borderBottomLeftRadius = radius; ring.style.borderBottomRightRadius = radius;
            ring.style.borderTopWidth = 3; ring.style.borderBottomWidth = 3;
            ring.style.borderLeftWidth = 3; ring.style.borderRightWidth = 3;
            ring.style.borderTopColor = ring.style.borderBottomColor = ring.style.borderLeftColor = ring.style.borderRightColor = cyan ? Color.cyan : new Color(0.7f, 0.7f, 0.7f);
            ring.style.justifyContent = Justify.Center; ring.style.alignItems = Align.Center;
            ring.style.position = Position.Absolute;
            var label = new Label("80%");
            label.style.color = Color.white; label.style.fontSize = size * 0.25f;
            label.style.unityFontStyleAndWeight = FontStyle.Bold;
            ring.Add(label);
            var title = new Label(text);
            title.style.color = Color.gray; title.style.fontSize = size * 0.15f;
            title.style.position = Position.Absolute; title.style.bottom = size * 0.15f;
            ring.Add(title);
            return ring;
        }

        private void OnMouseWheel(WheelEvent evt)
        {
            var mainMenuRoot = uiManager.Root.Q<VisualElement>("MainMenuRoot");
            bool isMainMenuVisible = mainMenuRoot != null && mainMenuRoot.style.display == DisplayStyle.Flex;
            if (!uiManager.IsSettingsOpen && isMainMenuVisible) return;
            VisualElement target = evt.target as VisualElement;
            bool isDirectUIInteraction = _hoveredSubVolume != null || (_hoveredSlider != null && _activeTab == "SOUND");
            if (!isDirectUIInteraction && target != null)
            {
                if (target is ScrollView || target.GetFirstAncestorOfType<ScrollView>() != null) return; 
            }
            _overlayActiveCount++;
            ShowVolumeOverlay();
            if (_hoveredSubVolume != null) UpdateSubVolume(_hoveredSubVolume, -evt.delta.y * 2f);
            else if (_hoveredSlider != null && _activeTab == "SOUND")
            {
                float step = (_sliderMax - _sliderMin) / 100f; 
                float newVal = Mathf.Clamp(_hoveredSlider.value - (evt.delta.y * step * 5f), _sliderMin, _sliderMax);
                _hoveredSlider.value = newVal;
                _hoveredOnChanged?.Invoke(newVal);
            }
            else UpdateMasterVolume(-evt.delta.y * 2f);
            evt.StopPropagation();
        }

        private void UpdateMasterVolume(float delta) => UpdateVolume("MasterVolume", _masterVol + delta);

        private void UpdateSubVolume(string key, float delta) => UpdateVolume(key, PlayerPrefs.GetFloat(key, 80f) + delta);

        private void UpdateVolume(string key, float volume, bool updateSlider = true)
        {
            volume = Mathf.Clamp(volume, 0f, 100f);
            PlayerPrefs.SetFloat(key, volume);
            AudioManager.Instance?.SetVolume(key, volume);

            if (key == "MasterVolume")
            {
                _masterVol = volume;
                if (_masterVolLabel != null) _masterVolLabel.text = $"{Mathf.RoundToInt(volume)}%";
            }
            else
            {
                if (_subRings.TryGetValue(key, out var data)) data.label.text = $"{Mathf.RoundToInt(volume)}%";
            }

            if (updateSlider && _audioSliders.TryGetValue(key, out var sliderData))
            {
                sliderData.slider.SetValueWithoutNotify(volume);
                sliderData.input.value = volume.ToString("F1");
            }
        }

        private async void ShowVolumeOverlay()
        {
            _volumeContainer.BringToFront();
            uiManager.Root.Q<VisualElement>("CursorLayer")?.BringToFront();
            _volumeContainer.style.display = DisplayStyle.Flex;
            _volumeContainer.style.opacity = 1f;
            foreach (var kvp in _subRings) kvp.Value.label.text = $"{Mathf.RoundToInt(PlayerPrefs.GetFloat(kvp.Key, 80f))}%";
            _masterVolLabel.text = $"{Mathf.RoundToInt(_masterVol)}%";
            int currentId = _overlayActiveCount;
            await Task.Delay(3000);
            if (currentId == _overlayActiveCount && _hoveredSubVolume == null)
            {
                Tween.Custom(1f, 0f, duration: 0.5f, onValueChange: val => _volumeContainer.style.opacity = val)
                    .OnComplete(() => { if (_volumeContainer.style.opacity == 0f) _volumeContainer.style.display = DisplayStyle.None; });
            }
        }

        private VisualElement CreateSection(string title) 
        { 
            var label = new Label(GetT(title)); 
            label.AddToClassList("text-heading"); 
            label.style.marginTop = 60; 
            label.style.borderBottomWidth = 2;
            label.style.borderBottomColor = Color.cyan;
            label.style.paddingBottom = 10;
            return label; 
        }

        private VisualElement CreateSubSection(string title) 
        { 
            var label = new Label(GetT(title)); 
            label.AddToClassList("setting-section-header"); 
            label.style.marginTop = 20; 
            return label; 
        }

        private VisualElement CreateSliderWithInput(string labelText, float min, float max, float startVal, Action<float> OnValueChanged, string audioKey = null)
        {
            var row = new VisualElement { style = { flexDirection = FlexDirection.Row, alignItems = Align.Center, marginTop = 5, marginBottom = 5 } };
            var label = new Label(labelText) { style = { width = Length.Percent(35) } }; label.AddToClassList("text-body");
            var slider = new Slider(min, max) { value = startVal, style = { flexGrow = 1 } };
            var input = new TextField { value = startVal.ToString("F1"), style = { width = 50, marginLeft = 10 } }; input.AddToClassList("input-field");
            
            if (audioKey != null) _audioSliders[audioKey] = (slider, input);

            slider.RegisterCallback<PointerEnterEvent>(evt => { _hoveredSlider = slider; _hoveredOnChanged = OnValueChanged; _sliderMin = min; _sliderMax = max; });
            slider.RegisterCallback<PointerLeaveEvent>(evt => { if (_hoveredSlider == slider) { _hoveredSlider = null; _hoveredOnChanged = null; } });
            slider.RegisterValueChangedCallback(evt => { float val = Mathf.Round(evt.newValue * 10f) / 10f; if (input.panel?.focusController?.focusedElement != input.ElementAt(0)) input.value = val.ToString("F1"); OnValueChanged?.Invoke(val); });
            input.RegisterValueChangedCallback(evt => { if (float.TryParse(evt.newValue, out float val)) { slider.value = Mathf.Clamp(val, min, max); OnValueChanged?.Invoke(slider.value); } });
            row.Add(label); row.Add(slider); row.Add(input); return row;
        }

        private VisualElement CreateAudioSlider(string label, string prefKey)
        {
            var sliderRow = CreateSliderWithInput(label, 0, 100, PlayerPrefs.GetFloat(prefKey, 80), val => {
                UpdateVolume(prefKey, val, false);
            }, prefKey);
            sliderRow.RegisterCallback<WheelEvent>(evt => {
                UpdateVolume(prefKey, PlayerPrefs.GetFloat(prefKey, 80f) - (evt.delta.y * 2f));
            });
            return sliderRow;
        }

        private VisualElement CreateRebindRow(UnityEngine.InputSystem.InputAction action, int bindingIndex, string labelText)
        {
            var row = new VisualElement(); row.AddToClassList("rebind-row"); row.style.flexDirection = FlexDirection.Row; row.style.justifyContent = Justify.SpaceBetween; row.style.alignItems = Align.Center; row.style.paddingTop = row.style.paddingBottom = 10; row.style.borderBottomWidth = 1; row.style.borderBottomColor = new Color(1, 1, 1, 0.1f);
            var label = new Label(labelText); label.AddToClassList("rebind-label"); label.style.color = Color.white; row.Add(label);
            var btn = new Button { text = action.GetBindingDisplayString(bindingIndex).ToUpper() }; btn.AddToClassList("rebind-button"); btn.style.width = 150;
            btn.clicked += () => StartRebinding(action, bindingIndex, btn); row.Add(btn);
            return row;
        }

        private void StartRebinding(UnityEngine.InputSystem.InputAction action, int bindingIndex, Button btn)
        {
            btn.text = "> <"; btn.style.color = Color.yellow; action.actionMap.Disable();
            var op = action.PerformInteractiveRebinding(bindingIndex).WithControlsExcluding("<Mouse>/position").WithControlsExcluding("<Mouse>/delta").WithControlsExcluding("<Keyboard>/escape").OnMatchWaitForAnother(0.1f)
                .OnComplete(operation => { btn.text = action.GetBindingDisplayString(bindingIndex).ToUpper(); btn.style.color = Color.white; operation.Dispose(); action.actionMap.Enable(); uiManager.InputReader.SaveBindings(); })
                .OnCancel(operation => { btn.text = action.GetBindingDisplayString(bindingIndex).ToUpper(); btn.style.color = Color.white; operation.Dispose(); action.actionMap.Enable(); });
            op.Start();
        }

        private void OnKeyDown(KeyDownEvent evt)
        {
            if (_hoveredSlider == null) return;
            float step = (_sliderMax - _sliderMin) / 100f; 
            if (evt.keyCode == KeyCode.LeftArrow) _hoveredSlider.value -= step;
            if (evt.keyCode == KeyCode.RightArrow) _hoveredSlider.value += step;
        }

        public override void Update()
        {
            if (_mouseMetricsLabel != null && _mouseMetricsLabel.panel != null)
            {
                var (polling, latency) = MouseMetricsHelper.GetMetrics();
                _mouseMetricsLabel.text = $"{GetT("MOUSE_LATENCY")} report: {polling}/sec latency: {latency:F0}ms";
            }
        }

        public override async Task PlayTransitionIn()
        {
            root.style.display = DisplayStyle.Flex;
            _sidebar.style.translate = new StyleTranslate(new Translate(Length.Percent(-100), 0));
            await Tween.Custom(-100f, 0f, duration: 0.4f, ease: Ease.OutQuad, onValueChange: val => _sidebar.style.translate = new StyleTranslate(new Translate(Length.Percent(val), 0)));
        }

        public override async Task PlayTransitionOut()
        {
            await Tween.Custom(0f, -100f, duration: 0.3f, ease: Ease.InQuad, onValueChange: val => _sidebar.style.translate = new StyleTranslate(new Translate(Length.Percent(val), 0)));
            Hide();
        }

        private void OnDestroy()
        {
            if (LocalizationManager.Instance != null)
            {
                LocalizationManager.Instance.OnLanguageChanged -= OnLanguageChanged;
            }
        }
    }
}