using System.Collections.Generic;
using UnityEngine;

namespace MSCO
{
    /// <summary>
    /// Multiplayer-Launcher im Hauptmenü (dunkles Design mit Seitenleiste, Statusleiste
    /// und Minimieren). Seiten: P2P (Spieler hostet selbst) und Server Browser (Platzhalter,
    /// dort kommt später auch Direct Connect zu dedizierten Servern hin).
    /// </summary>
    public class LobbyUI
    {
        enum Page { P2P, ServerBrowser }

        const float Width = 760f;
        const float Height = 460f;
        const float SidebarWidth = 190f;
        const float StatusHeight = 36f;


        static readonly Color Background = Hex(0x17, 0x17, 0x1b);
        static readonly Color Sidebar = Hex(0x0f, 0x0f, 0x12);
        static readonly Color Field = Hex(0x24, 0x24, 0x2a);
        static readonly Color FieldFocus = Hex(0x2e, 0x2e, 0x36);
        static readonly Color Accent = Hex(0xf2, 0x6b, 0x1d);
        static readonly Color AccentHover = Hex(0xff, 0x82, 0x3a);
        static readonly Color Secondary = Hex(0x2c, 0x2c, 0x33);
        static readonly Color SecondaryHover = Hex(0x3a, 0x3a, 0x43);
        static readonly Color Muted = Hex(0x8e, 0x8e, 0x99);
        static readonly Color Online = Hex(0x3d, 0xd6, 0x8c);
        static readonly Color Pending = Hex(0xf2, 0xc2, 0x1d);

        Page page = Page.P2P;
        bool minimized;
        Vector2 playerScroll;
        Vector2 serverScroll;
        bool browserLoaded;
        string selectedServer;        // "adresse:port" des geöffneten Server-Profils
        string searchInput = "";
        bool showSteam = true, showNonSteam = true, hideFull;
        string nameInput;
        string directInput;
        const string PrefDirect = "MSCO_LastServer";

        bool stylesReady;
        Texture2D texBackground, texSidebar, texAccent, texOnline, texPending, texMuted, texRow;
        List<ServerListEntry> shownAll, shownServers; // Stand des letzten Layout-Durchgangs
        string layoutError;
        GUIStyle windowBox, sidebarBox, rowBox, accentBox, pillStyle, pillMutedStyle, chipOnStyle, chipOffStyle;
        GUIStyle logoStyle, taglineStyle, navStyle, navActiveStyle, titleStyle, textStyle, captionStyle,
                 fieldStyle, primaryStyle, secondaryStyle, statusStyle, tabStyle, headerCellStyle,
                 rowNameStyle, rowTagStyle, badgeStyle, toggleStyle, placeholderStyle;

        /// <summary>Fläche, die das Fenster gerade belegt (GUI-Koordinaten, oben = 0).</summary>
        public Rect ScreenRect { get; private set; }

        /// <summary>Fenster offen (nicht minimiert) - dann ist das Spielmenü dahinter gesperrt.</summary>
        public bool IsOpen { get { return !minimized; } }

        /// <summary>Ist die Maus gerade über dem Fenster bzw. der eingeklappten Leiste?</summary>
        public bool ContainsMouse()
        {
            Vector3 m = Input.mousePosition;
            return ScreenRect.Contains(new Vector2(m.x, Screen.height - m.y));
        }

        public void Draw(MultiplayerManager mp)
        {
            EnsureStyles();
            bool pendingJoin = mp.PendingJoinHost != null && !mp.IsInSession;
            bool versionWarning = mp.PendingVersionWarning != null && !mp.IsInSession;
            if (pendingJoin || versionWarning) minimized = false; // JOIN-Link / Warnung: Fenster zeigen
            if (minimized) { DrawMinimized(mp); return; }

            var window = new Rect((Screen.width - Width) / 2f, (Screen.height - Height) / 2f, Width, Height);
            ScreenRect = window;
            GUI.Box(window, GUIContent.none, windowBox);

            DrawSidebar(new Rect(window.x, window.y, SidebarWidth, Height - StatusHeight));

            var content = new Rect(window.x + SidebarWidth + 32, window.y + 28,
                                   Width - SidebarWidth - 64, Height - StatusHeight - 52);
            GUILayout.BeginArea(content);
            if (versionWarning) DrawVersionWarning(mp);
            else if (pendingJoin) DrawJoinConfirm(mp);
            else if (mp.IsInSession) DrawSession(mp);
            else if (page == Page.P2P) DrawP2P(mp);
            else DrawServerBrowser(mp);
            GUILayout.EndArea();

            DrawStatusBar(mp, new Rect(window.x, window.yMax - StatusHeight, Width, StatusHeight));
        }

        // ---------------------------------------------------------------- Bereiche

        void DrawSidebar(Rect r)
        {
            GUI.Box(r, GUIContent.none, sidebarBox);
            // Logo + Schriftzug
            Texture2D logo = Branding.LogoTexture;
            float textX = r.x + 22;
            if (logo != null)
            {
                GUI.DrawTexture(new Rect(r.x + 20, r.y + 20, 44, 44), logo);
                textX = r.x + 72;
            }
            GUI.Label(new Rect(textX, r.y + 24, r.xMax - textX, 40), "MSCO", logoStyle);
            GUI.Label(new Rect(r.x + 22, r.y + 70, r.width - 30, 20), "MY SUMMER CAR ONLINE", taglineStyle);

            float y = r.y + 110;
            if (NavButton(new Rect(r.x, y, r.width, 42), "P2P", page == Page.P2P)) page = Page.P2P;
            y += 44;
            if (NavButton(new Rect(r.x, y, r.width, 42), "Server Browser", page == Page.ServerBrowser)) page = Page.ServerBrowser;

            GUI.Label(new Rect(r.x + 24, r.yMax - 30, r.width - 48, 20), "v" + MSCO.ModVersion, taglineStyle);
        }

        bool NavButton(Rect r, string text, bool active)
        {
            if (active) GUI.Box(new Rect(r.x + 4, r.y + 8, 4, r.height - 16), GUIContent.none, accentBox); // Akzentbalken links
            return GUI.Button(r, text, active ? navActiveStyle : navStyle);
        }

        void DrawP2P(MultiplayerManager mp)
        {
            GUILayout.Label("P2P", titleStyle);
            GUILayout.Label("Host a game from your own save and invite up to " + (MultiplayerManager.MaxPlayers - 1) +
                            " friends through Steam.", textStyle);
            GUILayout.Space(18);

            if (mp.SteamAvailable)
            {
                if (GUILayout.Button("HOST GAME", primaryStyle, GUILayout.Height(46), GUILayout.Width(250)))
                    mp.HostSteam();
                GUILayout.Space(14);
                GUILayout.Label("To join a friend: accept their invite in Steam, or right-click them in your " +
                                "Steam friends list and choose \"Join Game\".", textStyle);
            }
            else
            {
                GUILayout.Label("Steam is not running - start the game through Steam to host or join.", textStyle);
            }
        }

        void DrawServerBrowser(MultiplayerManager mp)
        {
            ServerBrowser browser = mp.Browser;
            // Beim ersten Öffnen laden, danach automatisch alle 15 s (Spielerzahl, Ping, neue Server)
            if (!browserLoaded || (!browser.Loading && Time.realtimeSinceStartup - browser.LastRefresh > ServerBrowser.AutoRefreshSeconds))
            {
                browserLoaded = true;
                browser.Refresh(mp);
            }

            // Server, die auf die direkte Abfrage nicht antworten (z.B. gerade geschlossen), gar nicht zeigen
            // Unity-GUI läuft in mehreren Durchgängen (Layout, Klick, Zeichnen). Die Liste nur im Layout-Durchgang
            // übernehmen - ändert sie sich dazwischen (Aktualisierung im Hintergrund), bricht das Layout sonst ab
            if (shownAll == null || Event.current.type == EventType.Layout)
                shownAll = browser.Servers.FindAll(s => !s.Offline);
            List<ServerListEntry> all = shownAll;

            // Server-Profil (Klick auf einen Server)
            if (selectedServer != null)
            {
                ServerListEntry selected = all.Find(s => s.Address + ":" + s.Port == selectedServer);
                DrawServerProfile(mp, selected);
                return;
            }

            GUILayout.BeginHorizontal();
            // Titel darf nicht vom REFRESH-Button zusammengedrückt werden (sonst Zeilenumbruch)
            GUILayout.Label("Server Browser", titleStyle, GUILayout.ExpandWidth(true));
            if (GUILayout.Button(browser.Loading ? "LOADING..." : "REFRESH", tabStyle, GUILayout.Height(28), GUILayout.Width(110)))
                browser.Refresh(mp);
            GUILayout.EndHorizontal();

            // Suche + Filter
            GUILayout.BeginHorizontal();
            searchInput = GUILayout.TextField(searchInput, 40, fieldStyle, GUILayout.Height(26), GUILayout.Width(170));
            if (string.IsNullOrEmpty(searchInput))
            {
                Rect field = GUILayoutUtility.GetLastRect();
                GUI.Label(new Rect(field.x + 10, field.y, field.width, field.height), "Search...", placeholderStyle);
            }
            GUILayout.Space(12);
            showSteam = Chip(showSteam, "STEAM");
            GUILayout.Space(6);
            showNonSteam = Chip(showNonSteam, "NON-STEAM");
            GUILayout.Space(6);
            hideFull = Chip(hideFull, "HIDE FULL");
            GUILayout.EndHorizontal();
            GUILayout.Space(6);

            string search = (searchInput ?? "").Trim().ToLower();
            if (shownServers == null || Event.current.type == EventType.Layout)
                shownServers = all.FindAll(s =>
                    (s.RequireSteam ? showSteam : showNonSteam) &&
                    (!hideFull || s.Players < s.MaxPlayers) &&
                    (search.Length == 0 || (s.Name ?? "").ToLower().Contains(search) || (s.Owner ?? "").ToLower().Contains(search)));
            List<ServerListEntry> servers = shownServers;
            string shownError = Event.current.type == EventType.Layout ? (layoutError = browser.Error) : layoutError;

            // Tabellenkopf
            Rect header = GUILayoutUtility.GetRect(10, 26, GUILayout.ExpandWidth(true));
            GUI.Box(header, GUIContent.none, rowBox);
            GUI.Label(new Rect(header.x + 12, header.y, header.width * 0.48f, header.height), "SERVER NAME", headerCellStyle);
            GUI.Label(new Rect(header.x + header.width * 0.5f, header.y, 70, header.height), "PLAYERS", headerCellStyle);
            GUI.Label(new Rect(header.x + header.width * 0.62f, header.y, 70, header.height), "TYPE", headerCellStyle);
            GUI.Label(new Rect(header.x + header.width * 0.76f, header.y, 50, header.height), "PING", headerCellStyle);

            serverScroll = GUILayout.BeginScrollView(serverScroll, GUILayout.Height(140));
            if (shownError != null) GUILayout.Label(shownError, textStyle);
            if (servers.Count == 0)
                GUILayout.Label(browser.Loading ? "Loading servers..." : all.Count > 0 ? "No servers match your filters." : "No servers online right now.", textStyle);
            foreach (ServerListEntry s in servers)
            {
                Rect row = GUILayoutUtility.GetRect(10, 34, GUILayout.ExpandWidth(true));
                GUI.Box(new Rect(row.x, row.y + 2, row.width, row.height - 4), GUIContent.none, rowBox);

                // Klick auf die Zeile öffnet das Server-Profil (dort wird verbunden)
                if (GUI.Button(new Rect(row.x, row.y, row.width, row.height), GUIContent.none, GUIStyle.none))
                    selectedServer = s.Address + ":" + s.Port;

                GUI.DrawTexture(new Rect(row.x + 10, row.y + 13, 8, 8), s.Ping < 0 ? texPending : texOnline);
                float nameX = row.x + 26;
                if (s.IsLocal)
                {
                    // Server auf diesem PC (localhost)
                    nameX += Pill(nameX, row, "LOCAL", pillStyle);
                }
                if (!string.IsNullOrEmpty(s.Version) && s.Version != MSCO.ModVersion)
                {
                    nameX += Pill(nameX, row, "v" + s.Version, pillStyle); // abweichende Version
                }
                GUI.Label(new Rect(nameX, row.y, row.x + row.width * 0.49f - nameX, row.height), s.Name, rowNameStyle);
                GUI.Label(new Rect(row.x + row.width * 0.5f, row.y, 70, row.height), s.Players + "/" + s.MaxPlayers, rowNameStyle);
                Pill(row.x + row.width * 0.62f, row, s.RequireSteam ? "STEAM" : "NO STEAM", s.RequireSteam ? pillStyle : pillMutedStyle);
                GUI.Label(new Rect(row.x + row.width * 0.76f, row.y, 50, row.height), s.Ping < 0 ? "..." : s.Ping + " ms", rowNameStyle);
                GUI.Label(new Rect(row.xMax - 30, row.y, 20, row.height), "›", headerCellStyle); // Hinweis: Profil öffnen
            }
            GUILayout.EndScrollView();

            GUILayout.FlexibleSpace();
            GUILayout.BeginHorizontal();
            if (!mp.SteamAvailable)
            {
                // Ohne Steam: eigener Name (nur für Non-Steam-Server)
                GUILayout.BeginVertical(GUILayout.Width(150));
                GUILayout.Label("YOUR NAME", captionStyle);
                DrawNameField(mp, 150);
                GUILayout.EndVertical();
                GUILayout.Space(10);
            }
            GUILayout.BeginVertical();
            GUILayout.Label("DIRECT CONNECT", captionStyle);
            GUILayout.BeginHorizontal();
            directInput = GUILayout.TextField(directInput, fieldStyle, GUILayout.Height(34));
            GUILayout.Space(10);
            if (GUILayout.Button("CONNECT", primaryStyle, GUILayout.Height(34), GUILayout.Width(110)))
            {
                string host;
                int port;
                if (ServerBrowser.TryParseAddress(directInput, out host, out port))
                {
                    PlayerPrefs.SetString(PrefDirect, directInput.Trim());
                    mp.JoinServer(host, port);
                }
            }
            GUILayout.EndHorizontal();
            GUILayout.EndVertical();
            GUILayout.EndHorizontal();
        }

        static bool CanJoin(MultiplayerManager mp, ServerListEntry s)
        {
            return s.Players < s.MaxPlayers && (!s.RequireSteam || mp.SteamAvailable);
        }

        void DrawNameField(MultiplayerManager mp, float width)
        {
            if (nameInput == null) nameInput = mp.PlayerName;
            string edited = GUILayout.TextField(nameInput, 24, fieldStyle, GUILayout.Height(34), GUILayout.Width(width));
            if (edited != nameInput)
            {
                nameInput = edited;
                if (edited.Trim().Length > 0) mp.PlayerName = edited.Trim();
            }
        }

        /// <summary>Server-Profil: wem der Server gehört, Version, Spieler, Laufzeit ...</summary>
        void DrawServerProfile(MultiplayerManager mp, ServerListEntry s)
        {
            if (GUILayout.Button("◂  BACK", tabStyle, GUILayout.Height(26), GUILayout.Width(90)))
            {
                selectedServer = null;
                return;
            }
            GUILayout.Space(6);

            if (s == null)
            {
                GUILayout.Label("Server offline", titleStyle);
                GUILayout.Label("This server does not respond anymore.", textStyle);
                return;
            }

            GUILayout.Label(s.Name, titleStyle);
            GUILayout.BeginHorizontal();
            GUILayout.Label(s.RequireSteam ? "STEAM" : "NON-STEAM", badgeStyle, GUILayout.ExpandWidth(false));
            if (s.IsLocal) { GUILayout.Space(10); GUILayout.Label("LOCAL", badgeStyle, GUILayout.ExpandWidth(false)); }
            GUILayout.FlexibleSpace();
            GUILayout.EndHorizontal();
            if (!string.IsNullOrEmpty(s.Description)) GUILayout.Label(s.Description, textStyle);
            GUILayout.Space(10);

            bool versionOk = s.Version == MSCO.ModVersion;
            GUILayout.BeginHorizontal();
            GUILayout.BeginVertical(GUILayout.Width(250));
            InfoRow("HOSTED BY", string.IsNullOrEmpty(s.Owner) ? "unknown" : s.Owner, rowNameStyle);
            InfoRow("VERSION", "v" + s.Version + (versionOk ? "" : "  (you: v" + MSCO.ModVersion + ")"), versionOk ? rowNameStyle : badgeStyle);
            InfoRow("STEAM", s.RequireSteam ? "Required" : "Not required", rowNameStyle);
            InfoRow("ONLINE FOR", s.UptimeSeconds >= 0 ? FormatUptime(s.UptimeSeconds) : "-", rowNameStyle);
            GUILayout.EndVertical();
            GUILayout.BeginVertical();
            InfoRow("PLAYERS", s.Players + " / " + s.MaxPlayers, rowNameStyle);
            InfoRow("PING", s.Ping < 0 ? "-" : s.Ping + " ms", rowNameStyle);
            InfoRow("ADDRESS", s.Address + ":" + s.Port, rowNameStyle);
            GUILayout.EndVertical();
            GUILayout.EndHorizontal();

            // Spielerliste
            if (s.PlayerNames != null && s.PlayerNames.Count > 0)
            {
                GUILayout.Space(4);
                GUILayout.Label("ONLINE", captionStyle);
                GUILayout.Label(string.Join(",  ", s.PlayerNames.ToArray()), textStyle);
            }

            GUILayout.FlexibleSpace();
            GUILayout.BeginHorizontal();
            GUI.enabled = CanJoin(mp, s);
            if (GUILayout.Button(s.Players >= s.MaxPlayers ? "SERVER FULL" : "JOIN SERVER", primaryStyle, GUILayout.Height(42), GUILayout.Width(190)))
                mp.JoinServer(s.Address, s.Port, s.Name, s.MaxPlayers);
            GUI.enabled = true;
            GUILayout.Space(12);
            if (s.RequireSteam && !mp.SteamAvailable)
                GUILayout.Label("This server requires Steam.", textStyle);
            else if (!mp.SteamAvailable)
            {
                GUILayout.Label("NAME", captionStyle, GUILayout.Width(42));
                DrawNameField(mp, 150);
            }
            GUILayout.EndHorizontal();
        }

        /// <summary>Kleines abgerundetes Abzeichen, so breit wie sein Text. Gibt die belegte Breite zurück.</summary>
        static float Pill(float x, Rect row, string text, GUIStyle style)
        {
            Vector2 size = style.CalcSize(new GUIContent(text));
            GUI.Label(new Rect(x, row.y + (row.height - 18) / 2f, size.x, 18), text, style);
            return size.x + 8;
        }

        /// <summary>Filter-Chip (an = orange umrandet), ersetzt die Unity-Häkchen.</summary>
        bool Chip(bool on, string text)
        {
            if (GUILayout.Button(text, on ? chipOnStyle : chipOffStyle, GUILayout.Height(26), GUILayout.ExpandWidth(false))) on = !on;
            return on;
        }

        void InfoRow(string caption, string value, GUIStyle valueStyle)
        {
            GUILayout.Label(caption, captionStyle);
            GUILayout.Label(value, valueStyle);
            GUILayout.Space(2);
        }

        static string FormatUptime(int seconds)
        {
            int days = seconds / 86400, hours = seconds / 3600 % 24, minutes = seconds / 60 % 60;
            if (days > 0) return days + "d " + hours + "h";
            if (hours > 0) return hours + "h " + minutes + "m";
            return Mathf.Max(1, minutes) + " min";
        }

        /// <summary>Server hat eine andere Version: warnen, Verbinden nur auf Wunsch.</summary>
        void DrawVersionWarning(MultiplayerManager mp)
        {
            MultiplayerManager.VersionWarning w = mp.PendingVersionWarning;
            GUILayout.Label("Version mismatch", titleStyle);
            GUILayout.Label("This server runs a different MSCO version than you. You can still join, but things may not " +
                            "sync correctly (players, items, cars). For the best experience use the same version.", textStyle);
            GUILayout.Space(16);

            GUILayout.Label("SERVER", captionStyle);
            GUILayout.Label(w.Name + "  (" + w.Host + ":" + w.Port + ")", rowNameStyle);
            GUILayout.Space(8);
            GUILayout.Label("VERSIONS", captionStyle);
            GUILayout.Label("Server v" + w.ServerVersion + "   -   You v" + MSCO.ModVersion, rowTagStyle);
            GUILayout.Space(22);

            GUILayout.BeginHorizontal();
            if (GUILayout.Button("JOIN ANYWAY", primaryStyle, GUILayout.Height(42), GUILayout.Width(170)))
                mp.ConfirmVersionWarning();
            GUILayout.Space(10);
            if (GUILayout.Button("CANCEL", secondaryStyle, GUILayout.Height(42), GUILayout.Width(170)))
                mp.CancelVersionWarning();
            GUILayout.EndHorizontal();
        }

        /// <summary>Nachfrage nach einem JOIN-Link der Website (keine Webseite soll einen ungefragt verbinden).</summary>
        void DrawJoinConfirm(MultiplayerManager mp)
        {
            GUILayout.Label("Join server?", titleStyle);
            GUILayout.Label("You opened a join link from the server list.", textStyle);
            GUILayout.Space(18);

            GUILayout.Label("SERVER ADDRESS", captionStyle);
            GUILayout.Label(mp.PendingJoinHost + ":" + mp.PendingJoinPort, rowNameStyle);
            GUILayout.Space(24);

            if (!mp.SteamAvailable)
                GUILayout.Label("Steam is required to join servers - start the game through Steam.", textStyle);

            GUILayout.BeginHorizontal();
            GUI.enabled = mp.SteamAvailable;
            if (GUILayout.Button("JOIN", primaryStyle, GUILayout.Height(42), GUILayout.Width(170)))
                mp.ConfirmPendingJoin();
            GUI.enabled = true;
            GUILayout.Space(10);
            if (GUILayout.Button("CANCEL", secondaryStyle, GUILayout.Height(42), GUILayout.Width(170)))
                mp.CancelPendingJoin();
            GUILayout.EndHorizontal();
        }

        void DrawSession(MultiplayerManager mp)
        {
            GUILayout.Label(mp.IsHost ? "Hosting" : "Connected", titleStyle);
            GUILayout.Label(mp.IsHost
                ? "Your game is open. Start when everyone has joined."
                : "Waiting for the host to start the game.", textStyle);
            GUILayout.Space(16);

            GUILayout.Label("PLAYERS  " + mp.Players.Count + "/" + MultiplayerManager.MaxPlayers, captionStyle);
            playerScroll = GUILayout.BeginScrollView(playerScroll, GUILayout.Height(170));
            foreach (PlayerInfo p in mp.Players)
            {
                Rect row = GUILayoutUtility.GetRect(10, 32, GUILayout.ExpandWidth(true));
                GUI.Box(new Rect(row.x, row.y, row.width, row.height - 4), GUIContent.none, rowBox);
                GUI.DrawTexture(new Rect(row.x + 12, row.y + 11, 8, 8), texOnline);
                GUI.Label(new Rect(row.x + 30, row.y, row.width - 150, row.height - 2), p.Name, rowNameStyle);
                string tag = p.Id == NetSession.HostId ? "HOST" : "";
                if (p.IsLocal) tag = tag.Length > 0 ? tag + " · YOU" : "YOU";
                GUI.Label(new Rect(row.xMax - 120, row.y, 110, row.height - 2), tag, rowTagStyle);
            }
            GUILayout.EndScrollView();
            GUILayout.Space(14);

            GUILayout.BeginHorizontal();
            if (mp.IsHost)
            {
                if (GUILayout.Button("START GAME", primaryStyle, GUILayout.Height(42), GUILayout.Width(150)))
                    mp.StartHostGame();
                GUILayout.Space(10);
                if (mp.IsSteamSession && mp.Players.Count < MultiplayerManager.MaxPlayers &&
                    GUILayout.Button("INVITE FRIENDS", secondaryStyle, GUILayout.Height(42), GUILayout.Width(150)))
                    mp.InviteFriends();
                GUILayout.Space(10);
            }
            if (GUILayout.Button("DISCONNECT", secondaryStyle, GUILayout.Height(42), GUILayout.Width(150)))
                mp.Disconnect();
            GUILayout.EndHorizontal();
        }

        void DrawStatusBar(MultiplayerManager mp, Rect r)
        {
            GUI.Box(r, GUIContent.none, sidebarBox);
            Texture2D dot = mp.IsPeerReady ? texOnline : mp.IsInSession ? texPending : texMuted;
            GUI.DrawTexture(new Rect(r.x + 18, r.y + (r.height - 8) / 2f, 8, 8), dot);
            GUI.Label(new Rect(r.x + 36, r.y, r.width - 180, r.height), mp.Status, statusStyle);
            if (GUI.Button(new Rect(r.xMax - 118, r.y + 6, 106, r.height - 12), "MINIMIZE", tabStyle))
                minimized = true;
        }

        void DrawMinimized(MultiplayerManager mp)
        {
            var r = new Rect((Screen.width - 220) / 2f, 0, 220, 30);
            ScreenRect = r;
            GUI.Box(r, GUIContent.none, sidebarBox);
            GUI.Box(new Rect(r.x + 10, r.yMax - 3, r.width - 20, 3), GUIContent.none, accentBox);
            Texture2D dot = mp.IsPeerReady ? texOnline : mp.IsInSession ? texPending : texMuted;
            Texture2D logo = Branding.LogoTexture;
            if (logo != null) GUI.DrawTexture(new Rect(r.x + 8, r.y + 4, 22, 22), logo);
            GUI.DrawTexture(new Rect(r.x + 36, r.y + 11, 8, 8), dot);
            if (GUI.Button(new Rect(r.x + 48, r.y, r.width - 48, r.height), "MSCO MULTIPLAYER  ▾", tabStyle))
                minimized = false;
        }

        // ---------------------------------------------------------------- Hilfen

        void EnsureStyles()
        {
            if (stylesReady && texBackground != null) return;

            // PlayerPrefs erst hier lesen (nicht im Konstruktor erlaubt)
            directInput = PlayerPrefs.GetString(PrefDirect, "");

            texBackground = Solid(Background);
            texSidebar = Solid(Sidebar);
            texAccent = Solid(Accent);
            texOnline = UiTheme.Rounded(Online, 4);   // runde Status-Punkte
            texPending = UiTheme.Rounded(Pending, 4);
            texMuted = UiTheme.Rounded(Muted, 4);
            texRow = Solid(Field);
            windowBox = UiTheme.Panel9(Background, 10);
            sidebarBox = UiTheme.Panel9(Sidebar, 10);
            rowBox = UiTheme.Panel9(Field, UiTheme.Radius);
            accentBox = UiTheme.Panel9(Accent, 1);

            pillStyle = UiTheme.Panel9(new Color(Accent.r, Accent.g, Accent.b, 0.18f), 4);
            pillStyle.normal.textColor = Accent;
            pillStyle.fontSize = 10;
            pillStyle.fontStyle = FontStyle.Bold;
            pillStyle.alignment = TextAnchor.MiddleCenter;
            pillStyle.padding = new RectOffset(7, 7, 0, 0);
            pillStyle.wordWrap = false;
            pillMutedStyle = new GUIStyle(pillStyle);
            pillMutedStyle.normal.background = UiTheme.Rounded(new Color(1f, 1f, 1f, 0.08f), 4);
            pillMutedStyle.normal.textColor = Muted;

            chipOnStyle = Button(new Color(Accent.r, Accent.g, Accent.b, 0.22f), new Color(Accent.r, Accent.g, Accent.b, 0.32f), AccentHover, 11, FontStyle.Bold);
            chipOffStyle = Button(Field, FieldFocus, Muted, 11, FontStyle.Bold);
            chipOnStyle.padding = chipOffStyle.padding = new RectOffset(12, 12, 0, 0);

            logoStyle = Label(28, Color.white, FontStyle.Bold);
            taglineStyle = Label(10, Muted, FontStyle.Bold);
            titleStyle = Label(24, Color.white, FontStyle.Bold);
            textStyle = Label(13, Muted, FontStyle.Normal);
            textStyle.wordWrap = true;
            captionStyle = Label(11, Muted, FontStyle.Bold);
            captionStyle.margin.bottom = 6;
            statusStyle = Label(12, Color.white, FontStyle.Normal);
            statusStyle.alignment = TextAnchor.MiddleLeft;
            headerCellStyle = Label(11, Muted, FontStyle.Bold);
            headerCellStyle.alignment = TextAnchor.MiddleLeft;
            rowNameStyle = Label(14, Color.white, FontStyle.Normal);
            rowNameStyle.alignment = TextAnchor.MiddleLeft;
            rowTagStyle = Label(11, Accent, FontStyle.Bold);
            rowTagStyle.alignment = TextAnchor.MiddleRight;
            badgeStyle = new GUIStyle(rowTagStyle);
            badgeStyle.alignment = TextAnchor.MiddleLeft;
            badgeStyle.padding = new RectOffset(6, 6, 2, 2);
            placeholderStyle = Label(13, Muted, FontStyle.Italic);
            placeholderStyle.alignment = TextAnchor.MiddleLeft;
            toggleStyle = new GUIStyle(GUI.skin.toggle);
            toggleStyle.normal.textColor = toggleStyle.onNormal.textColor = toggleStyle.hover.textColor = toggleStyle.onHover.textColor = Color.white;
            toggleStyle.fontSize = 11;
            toggleStyle.fontStyle = FontStyle.Bold;

            navStyle = Button(Sidebar, Secondary, Muted, 14, FontStyle.Normal);
            navStyle.alignment = TextAnchor.MiddleLeft;
            navStyle.padding = new RectOffset(26, 10, 0, 0);
            navActiveStyle = Button(Secondary, Secondary, Color.white, 14, FontStyle.Bold);
            navActiveStyle.alignment = TextAnchor.MiddleLeft;
            navActiveStyle.padding = new RectOffset(26, 10, 0, 0);

            primaryStyle = Button(Accent, AccentHover, Color.white, 14, FontStyle.Bold);
            secondaryStyle = Button(Secondary, SecondaryHover, Color.white, 14, FontStyle.Bold);
            tabStyle = Button(Sidebar, Secondary, Muted, 11, FontStyle.Bold);

            fieldStyle = UiTheme.Field(14);

            stylesReady = true;
        }

        static GUIStyle Label(int size, Color color, FontStyle font)
        {
            var s = new GUIStyle(GUI.skin.label);
            s.fontSize = size;
            s.fontStyle = font;
            s.normal.textColor = color;
            return s;
        }

        static GUIStyle Button(Color normal, Color hover, Color text, int size, FontStyle font)
        {
            var s = new GUIStyle(GUI.skin.button);
            // abgerundete Ecken (9-Slice), siehe UiTheme
            s.normal.background = UiTheme.Rounded(normal);
            s.hover.background = UiTheme.Rounded(hover);
            s.active.background = UiTheme.Rounded(hover);
            s.focused.background = UiTheme.Rounded(normal);
            s.normal.textColor = s.hover.textColor = s.active.textColor = s.focused.textColor = text;
            s.border = new RectOffset(UiTheme.Radius + 2, UiTheme.Radius + 2, UiTheme.Radius + 2, UiTheme.Radius + 2);
            s.fontSize = size;
            s.fontStyle = font;
            return s;
        }

        static Texture2D Solid(Color color)
        {
            var tex = new Texture2D(1, 1);
            tex.SetPixel(0, 0, color);
            tex.Apply();
            tex.hideFlags = HideFlags.HideAndDontSave;
            return tex;
        }

        static Color Hex(int r, int g, int b)
        {
            return new Color(r / 255f, g / 255f, b / 255f, 1f);
        }
    }
}