Dreadcast Dynamic Messages V1

Messagerie dynamique

Fra 11.04.2025. Se den seneste versjonen.

// ==UserScript==
// @name           Dreadcast Dynamic Messages V1
// @namespace      http://tampermonkey.net/
// @version        1.0.1
// @description    Messagerie dynamique
// @author         Laïn
// @match          https://www.dreadcast.net/Main*
// @grant          GM_addStyle
// @grant          GM_xmlhttpRequest
// @grant          unsafeWindow
// @grant          GM_info
// ==/UserScript==


(function() {
    'use strict';


    // --- Global Variables & Constants ---
    let MY_NAME = null;
    const ACTIVE_CONVERSATIONS = {}; // Stores { customWindow, originalWindow, latestMessageId, oldestMessageId, allMessagesLoaded, isLoadingOlder, participants, hasUnreadNotification, muteTimerIntervalId }
    let openingMutedOverride = null;
    let openingMutedOverrideTimer = null;
    const INITIAL_LOAD_COUNT = 20;
    const LOAD_MORE_COUNT = 25;
    // Click simulation delays
    const REFIND_DELAY = 50;
    const UI_CLICK_DELAY = 50;
    const UI_WAIT_DELAY = 100;
    const WAIT_FOR_ELEMENT_TIMEOUT = 1500;
    const NOTIFICATION_SOUND_URL = 'https://opengameart.org/sites/default/files/audio_preview/GUI%20Sound%20Effects_031.mp3.ogg';
    const UNOPENED_NOTIFICATION_SOUND_URL = 'https://orangefreesounds.com/wp-content/uploads/2020/10/Simple-notification-alert.mp3';

    // --- Version Info ---
    const SCRIPT_VERSION = '0.9.9-global-mute'; // <<< UPDATED version number

    // --- UI Constants ---
    const MIN_WINDOW_WIDTH = 300;
    const MIN_WINDOW_HEIGHT = 200;
    const DEFAULT_THEME_COLOR = '#0b5a9c';
    const GLOBAL_THEME_STORAGE_KEY = 'dmm_theme_color_v1';
    const CONVERSATION_COLORS_STORAGE_KEY = 'dmm_conversation_colors_v2';
    // Notification Colors
    const UNREAD_NOTIFICATION_COLOR = '#cca300';
    const UNREAD_TEXT_COLOR = '#101010';
    const UNREAD_BORDER_COLOR = '#b0891a';
    // Sidebar Mute Highlight Color
    const SIDEBAR_MUTED_COLOR = '#ff6666'; // A noticeable red/pink

    // --- Global Sound Mute State --- <<< NEW >>>
    let isGloballyMuted = false;
    const GLOBAL_SOUND_MUTE_STORAGE_KEY = 'dmm_global_sound_mute_v1';
    const GLOBAL_MUTE_BUTTON_ID = 'dmm-global-mute-button';

    // --- Mute Constants & Storage (v3 - Timed Mutes + Selected Duration) ---
    const MUTED_CONVERSATIONS_STORAGE_KEY_V3 = 'dmm_muted_conversations_v3'; // New key for new format
    const MUTE_DURATIONS = { // milliseconds, null for forever, 0 for unmute
        UNMUTE: 0,
        TWO_MINUTES: 2 * 60 * 1000,
        FIFTEEN_MINUTES: 15 * 60 * 1000,
        ONE_HOUR: 60 * 60 * 1000,
        FOREVER: null
    };

    // --- Global Sound Mute Utilities --- <<< NEW >>>
    function loadGlobalMuteState() {
        try {
            const storedValue = localStorage.getItem(GLOBAL_SOUND_MUTE_STORAGE_KEY);
            isGloballyMuted = storedValue === 'true'; // localStorage stores strings
            // console.log(`DMM Global Mute: Initial state loaded: ${isGloballyMuted}`);
        } catch (e) {
            console.error("DMM Global Mute: Failed to load state from localStorage.", e);
            isGloballyMuted = false; // Default to unmuted on error
        }
    }

    function saveGlobalMuteState() {
        try {
            localStorage.setItem(GLOBAL_SOUND_MUTE_STORAGE_KEY, String(isGloballyMuted));
            // console.log(`DMM Global Mute: State saved: ${isGloballyMuted}`);
        } catch (e) {
            console.error("DMM Global Mute: Failed to save state to localStorage.", e);
        }
    }

    function updateGlobalMuteButtonAppearance() {
        const button = document.getElementById(GLOBAL_MUTE_BUTTON_ID);
        if (button) {
            if (isGloballyMuted) {
                button.textContent = '🔇'; // Muted icon
                button.title = 'Activer les sons du script DMM';
                button.style.textDecoration = 'line-through';
                button.style.opacity = '0.7';
                button.style.fontSize = '1.5em'; // 50% larger
            } else {
                button.textContent = '🔈'; // Unmuted icon
                button.title = 'Couper les sons du script DMM';
                button.style.textDecoration = 'none';
                button.style.opacity = '1';
                button.style.fontSize = '1.5em'; // 50% larger
            }
        }
    }

    async function createGlobalMuteButton() {
        try {
            const newsDiv = await waitForElement('.news', 5000); // Wait for the news div
            if (!newsDiv || document.getElementById(GLOBAL_MUTE_BUTTON_ID)) {
                if (!newsDiv) console.warn("DMM Global Mute: '.news' div not found to attach button.");
                return; // Don't add if already exists or target not found
            }

            const muteButton = document.createElement('span'); // Using span for inline flow
            muteButton.id = GLOBAL_MUTE_BUTTON_ID;
            muteButton.style.cursor = 'pointer';
            muteButton.style.marginLeft = '10px'; // Space after news link
            muteButton.style.fontSize = '1em'; // Adjust size if needed
            muteButton.style.verticalAlign = 'middle'; // Align with text
            muteButton.style.zIndex = '9999999999'; // Very high z-index as requested
            muteButton.style.position = 'relative'; // Needed for z-index to reliably apply vs static elements

            muteButton.addEventListener('click', () => {
                isGloballyMuted = !isGloballyMuted;
                saveGlobalMuteState();
                updateGlobalMuteButtonAppearance();
                console.log(`DMM Global Mute: Toggled to ${isGloballyMuted}`);
            });

            // Insert the button after the news div
            newsDiv.insertAdjacentElement('afterend', muteButton);

            // Set initial appearance based on loaded state
            updateGlobalMuteButtonAppearance();

            console.log("DMM Global Mute: Button created and attached.");

        } catch (error) {
            console.error("DMM Global Mute: Error creating or attaching global mute button:", error);
        }
    }
    // --- End Global Sound Mute Utilities ---


    function getMutedData() {
        try {
            // Prioritize V3, fallback to V2 for migration (optional, simpler to just use V3)
            let stored = localStorage.getItem(MUTED_CONVERSATIONS_STORAGE_KEY_V3);
            if (!stored) {
                 // Optional: Add migration logic here if needed from V2
                 // For simplicity, we'll just start fresh with V3
                 stored = '{}'; // Start with empty V3 data
                 // console.log("DMM Mute: Initializing V3 mute storage."); // Less verbose
            }

            const parsed = JSON.parse(stored);
            // Basic validation: ensure it's an object
            return (typeof parsed === 'object' && parsed !== null && !Array.isArray(parsed)) ? parsed : {};
        } catch (e) {
            console.error("DMM: Failed to parse muted conversation data (v3) from localStorage.", e);
            return {}; // Return empty object on error
        }
    }

    function saveMutedData(muteDataObject) {
        if (typeof muteDataObject !== 'object' || muteDataObject === null || Array.isArray(muteDataObject)) {
             console.error("DMM SaveMutedData: Attempted to save non-object:", muteDataObject);
             return;
        }
        try {
            localStorage.setItem(MUTED_CONVERSATIONS_STORAGE_KEY_V3, JSON.stringify(muteDataObject));
        } catch (e) {
            console.error("DMM: Failed to save muted conversation data (v3) to localStorage.", e);
        }
    }

    // Checks if a conversation is *currently* muted, cleans up expired entries AND updates sidebar UI
    function isConversationMuted(conversationId) {
        const idStr = String(conversationId);
        if (!idStr) return false;

        let mutedData = getMutedData();
        const entry = mutedData[idStr];
        let isCurrentlyMuted = false;
        let dataNeedsSaving = false;
        let needsSidebarUpdate = false; // Flag

        if (entry && typeof entry === 'object') {
            const endTime = entry.muteEndTime;
            if (endTime === null) { // Permanent mute
                isCurrentlyMuted = true;
            } else if (typeof endTime === 'number' && endTime > 0) {
                if (Date.now() < endTime) { // Timed mute still active
                    isCurrentlyMuted = true;
                } else {
                    // Mute expired! Clean up.
                    // console.log(`%cDMM Mute Check: Mute expired for ${idStr}. Removing entry.`, "color: gray;"); // Less verbose
                    delete mutedData[idStr];
                    dataNeedsSaving = true;
                    isCurrentlyMuted = false;
                    needsSidebarUpdate = true; // Trigger sidebar update on expiry
                }
            } else {
                // Invalid entry (missing endTime or invalid type), clean up
                console.warn(`DMM Mute Check: Found invalid mute entry format for ${idStr}. Removing.`, entry);
                delete mutedData[idStr];
                dataNeedsSaving = true;
                isCurrentlyMuted = false;
                needsSidebarUpdate = true; // Trigger sidebar update on cleanup
            }
        } else {
             // No entry or invalid entry type
             if (entry) { // If entry existed but was invalid type
                 console.warn(`DMM Mute Check: Found invalid mute entry type for ${idStr}. Removing.`, entry);
                 delete mutedData[idStr];
                 dataNeedsSaving = true;
                 needsSidebarUpdate = true; // Trigger sidebar update on cleanup
             }
             isCurrentlyMuted = false;
        }

        if (dataNeedsSaving) {
            saveMutedData(mutedData);
        }

        if (needsSidebarUpdate) { // NEW: Update sidebar if status changed due to expiry/cleanup
            updateSidebarMuteStatus(idStr);
        }

        return isCurrentlyMuted;
    }

    // Gets the current mute end time (null for permanent, 0 if not muted/expired, timestamp otherwise)
    function getConversationMuteEndTime(conversationId) {
         const idStr = String(conversationId);
         if (!idStr) return 0; // Treat as not muted

         let mutedData = getMutedData();
         const entry = mutedData[idStr];

         if (entry && typeof entry === 'object') {
             const endTime = entry.muteEndTime;
             if (endTime === null) {
                 return null; // Permanent
             } else if (typeof endTime === 'number' && endTime > 0) {
                 if (Date.now() < endTime) {
                     return endTime; // Active timed mute
                 } else {
                     // Expired, trigger potential cleanup and return 0
                      isConversationMuted(idStr); // Trigger cleanup side-effect (which now also updates sidebar)
                      return 0; // Treat as not muted
                 }
             }
         }
         // No valid entry or expired
         return 0; // Treat as not muted
    }

    // Gets the originally selected mute duration (used for checkmarks)
    function getConversationMuteSelectedDuration(conversationId) {
        const idStr = String(conversationId);
        if (!idStr) return MUTE_DURATIONS.UNMUTE; // Treat as unmuted

        const mutedData = getMutedData();
        const entry = mutedData[idStr];

        // First, check if it's *currently* muted at all
        if (!isConversationMuted(idStr)) {
            return MUTE_DURATIONS.UNMUTE; // Return Unmute duration if not currently muted
        }

        // If muted, retrieve the stored selected duration
        if (entry && typeof entry === 'object' && (typeof entry.selectedDuration === 'number' || entry.selectedDuration === null)) {
            return entry.selectedDuration;
        }

        // Fallback if data is somehow inconsistent (shouldn't happen with proper saving)
        console.warn(`DMM getSelectedDuration: Mute entry exists for ${idStr} but selectedDuration is missing/invalid.`, entry);
        // Try to infer based on endTime
        const endTime = entry?.muteEndTime;
        if (endTime === null) return MUTE_DURATIONS.FOREVER;
        // Cannot reliably infer timed duration, default to Unmute status display
        return MUTE_DURATIONS.UNMUTE;
    }


    // Sets mute status AND updates sidebar UI
    function setConversationMuted(conversationId, durationMs) {
        const idStr = String(conversationId);
        if (!idStr) return;

        let mutedData = getMutedData();
        let needsSave = false;
        const wasPreviouslyMuted = isConversationMuted(idStr); // Check *before* changing

        if (durationMs === MUTE_DURATIONS.UNMUTE) { // Unmute
            if (mutedData[idStr]) {
                delete mutedData[idStr];
                needsSave = true;
                console.log(`%cDMM Mute Set: Unmuted conversation ${idStr}.`, "color: green;");
            }
        } else if (durationMs === MUTE_DURATIONS.FOREVER) { // Mute forever
             if (!mutedData[idStr] || mutedData[idStr]?.muteEndTime !== null || mutedData[idStr]?.selectedDuration !== durationMs) {
                mutedData[idStr] = { muteEndTime: null, selectedDuration: MUTE_DURATIONS.FOREVER }; // Store duration
                needsSave = true;
                console.log(`%cDMM Mute Set: Muted conversation ${idStr} FOREVER.`, "color: orange;");
             }
        } else if (typeof durationMs === 'number' && durationMs > 0) { // Timed mute
            const endTime = Date.now() + durationMs;
            // Update only if end time or selected duration changes
            if (!mutedData[idStr] || mutedData[idStr]?.muteEndTime !== endTime || mutedData[idStr]?.selectedDuration !== durationMs) {
                mutedData[idStr] = { muteEndTime: endTime, selectedDuration: durationMs }; // Store duration
                needsSave = true;
                const durationMinutes = durationMs / (60 * 1000);
                console.log(`%cDMM Mute Set: Muted conversation ${idStr} for ${durationMinutes} minutes (until ${new Date(endTime).toLocaleTimeString()}).`, "color: orange;");
            }
        } else {
             console.warn(`DMM Mute Set: Invalid duration provided for ${idStr}:`, durationMs);
        }

        if (needsSave) {
             saveMutedData(mutedData);
        }

        const isNowMuted = isConversationMuted(idStr); // Check *after* changing

        // --- Trigger UI Updates ---
        // 1. Update DMM Window (Header, Menu Checkmarks/Timers, Theme)
        const convData = ACTIVE_CONVERSATIONS[idStr];
        if (convData?.customWindow && document.body.contains(convData.customWindow)) {
             updateHeaderMuteStatus(convData.customWindow, idStr);
             updateMuteOptionsUI(convData.customWindow, idStr); // <<< This now updates timer too
             applyCurrentTheme(convData.customWindow, idStr);
        }

        // 2. Update Sidebar List Item (if status changed)
        if (wasPreviouslyMuted !== isNowMuted || needsSave) { // Update if status flipped or if save happened (covers initial mute)
             updateSidebarMuteStatus(idStr);
        }
    }
    // --- End Mute Utilities (v3 + Sidebar Update Trigger) ---

    // --- Sidebar Mute UI Update Functions ---
    /**
     * Updates the visual style of a conversation item in the main message list (#liste_messages)
     * based on its current mute status.
     * @param {string} conversationId The ID of the conversation.
     */
    function updateSidebarMuteStatus(conversationId) {
        const listItem = document.getElementById(`message_${conversationId}`);
        if (!listItem) {
            // console.log(`DMM updateSidebarMuteStatus: LI #message_${conversationId} not found in DOM.`);
            return; // Element not visible (e.g., different folder) or doesn't exist
        }

        const titleElement = listItem.querySelector('.message_titre');
        if (!titleElement) {
            console.warn(`DMM updateSidebarMuteStatus: .message_titre not found within #message_${conversationId}`);
            return;
        }

        const currentlyMuted = isConversationMuted(conversationId); // Use the function that handles expiry checks

        if (currentlyMuted) {
            listItem.classList.add('dmm-muted-sidebar-item');
        } else {
            listItem.classList.remove('dmm-muted-sidebar-item');
        }
    }

    /**
     * Scans all visible message list items in the sidebar and updates their mute status highlighting.
     * Should be called on initial load and when the list content changes significantly.
     */
    function scanAndUpdateSidebarMutes() {
        const messageListItems = document.querySelectorAll('#liste_messages li.message[id^="message_"]');
        // console.log(`%cDMM scanAndUpdateSidebarMutes: Found ${messageListItems.length} items to check.`, "color: gray");
        messageListItems.forEach(item => {
            const conversationId = item.id.replace('message_', '');
            if (conversationId) {
                updateSidebarMuteStatus(conversationId);
            }
        });
    }
    // --- End Sidebar Mute UI Update Functions ---


    // --- Mute UI Update Functions ---
    /**
     * Updates the mute status display in the chat window header.
     * @param {HTMLElement} chatWindow - The custom chat window element.
     * @param {string} conversationId - The ID of the conversation.
     */
    function updateHeaderMuteStatus(chatWindow, conversationId) {
        if (!chatWindow || !document.body.contains(chatWindow)) return;

        const muteStatusDisplay = chatWindow.querySelector('.custom-chat-head .mute-status-display');
        if (!muteStatusDisplay) return;

        const endTime = getConversationMuteEndTime(conversationId); // null (forever), 0 (unmuted), or timestamp

        if (endTime === null) { // Permanent mute
            muteStatusDisplay.textContent = '🔈 Muted';
            muteStatusDisplay.style.display = 'inline-block';
            muteStatusDisplay.title = 'Cette conversation est muette de façon permanente.';
        } else if (endTime > 0) { // Timed mute active (endTime is a future timestamp)
            const now = Date.now();
            if (endTime > now) {
                const remainingSeconds = Math.round((endTime - now) / 1000);
                const remainingMinutes = Math.ceil(remainingSeconds / 60);

                if (remainingMinutes > 1) {
                    muteStatusDisplay.textContent = `🔈 ${remainingMinutes} min`;
                    muteStatusDisplay.title = `Muet pour encore ${remainingMinutes} minutes (jusqu'à ${new Date(endTime).toLocaleTimeString()}).`;
                } else if (remainingSeconds > 0) {
                    muteStatusDisplay.textContent = '🔈 <1 min';
                    muteStatusDisplay.title = `Muet pour moins d'une minute (jusqu'à ${new Date(endTime).toLocaleTimeString()}).`;
                } else {
                    // Should technically be caught by getConversationMuteEndTime returning 0, but safe fallback
                    muteStatusDisplay.style.display = 'none';
                    muteStatusDisplay.textContent = '';
                    muteStatusDisplay.title = '';
                }
                 muteStatusDisplay.style.display = 'inline-block';
            } else {
                // Mute just expired, hide display (isConversationMuted will handle cleanup later)
                muteStatusDisplay.style.display = 'none';
                muteStatusDisplay.textContent = '';
                muteStatusDisplay.title = '';
            }
        } else { // Not muted (endTime is 0 or invalid)
            muteStatusDisplay.style.display = 'none';
            muteStatusDisplay.textContent = '';
            muteStatusDisplay.title = '';
        }
    }

    /**
     * Updates the checkmarks, styles, and timer display for mute options in the menu.
     * @param {HTMLElement} chatWindow - The custom chat window element containing the menu.
     * @param {string} conversationId - The ID of the conversation.
     */
    function updateMuteOptionsUI(chatWindow, conversationId) { // <<< MODIFIED >>>
        if (!chatWindow || !document.body.contains(chatWindow)) return;

        const muteOptionsContainer = chatWindow.querySelector('.more-opts-menu .mute-options-container');
        if (!muteOptionsContainer) return;

        const currentEndTime = getConversationMuteEndTime(conversationId); // null (forever), 0 (unmuted), or timestamp
        const currentlySelectedDuration = getConversationMuteSelectedDuration(conversationId); // 0, null, or duration ms
        const isTimedMuteActive = typeof currentEndTime === 'number' && currentEndTime > 0;

        muteOptionsContainer.querySelectorAll('.mute-option-item').forEach(item => {
            const checkmark = item.querySelector('.checkmark');
            const textSpan = item.querySelector('.item-text'); // Get the text span
            if (!checkmark || !textSpan) return;

            const itemDurationStr = item.dataset.duration;
            let itemDuration;
            if (itemDurationStr === 'null') itemDuration = null;
            else itemDuration = parseInt(itemDurationStr, 10);

            // --- Restore Original Label ---
            // Store original label if not already stored
            if (!item.dataset.originalLabel) {
                item.dataset.originalLabel = textSpan.textContent;
            }
            // Always reset to original label before adding timer or checkmark styling
            textSpan.textContent = item.dataset.originalLabel;

            // --- Reset styles ---
            checkmark.style.display = 'none';
            item.style.fontWeight = 'normal'; // Reset font weight

            // --- Check if this item matches the currently active selection ---
            if (itemDuration === currentlySelectedDuration) {
                checkmark.style.display = 'inline'; // Show checkmark
                item.style.fontWeight = 'bold'; // Optional: make selected bold

                // --- Add Timer Display if this is the ACTIVE TIMED mute ---
                if (isTimedMuteActive && itemDuration === currentlySelectedDuration && typeof itemDuration === 'number' && itemDuration > 0) {
                     const remainingMs = currentEndTime - Date.now();
                     const formattedTime = formatRemainingTime(remainingMs);
                     if (formattedTime) {
                         // Append timer to the (restored) original label
                         textSpan.textContent += ` (${formattedTime})`;
                         item.title = `${item.dataset.originalLabel} (Fin: ${new Date(currentEndTime).toLocaleTimeString()})`; // Update title too
                     } else {
                         // Mute expired just now? Reset title
                         item.title = item.dataset.originalLabel;
                     }
                } else {
                     // Reset title if it's not the active timed mute
                     item.title = item.dataset.originalLabel;
                 }
            } else {
                // Reset title if it's not selected at all
                 item.title = item.dataset.originalLabel;
            }
        }); // --- End forEach item ---

        // Dim "Unmute" if already unmuted
        const unmuteItem = muteOptionsContainer.querySelector('.mute-option-item[data-duration="0"]');
        if (unmuteItem) {
            const isCurrentlyUnmuted = (currentEndTime === 0);
            unmuteItem.style.opacity = isCurrentlyUnmuted ? '0.6' : '1';
            unmuteItem.style.cursor = isCurrentlyUnmuted ? 'default' : 'pointer';

            // Ensure checkmark and bold are correctly applied if Unmute is the "selected" state
             if (isCurrentlyUnmuted && currentlySelectedDuration === MUTE_DURATIONS.UNMUTE) {
                 const unmuteCheckmark = unmuteItem.querySelector('.checkmark');
                 if (unmuteCheckmark) unmuteCheckmark.style.display = 'inline';
                 unmuteItem.style.fontWeight = 'bold'; // Also bold if selected
             }
        }
    } // --- End updateMuteOptionsUI ---
    // --- End Mute UI Update Functions ---


    // --- Observers ---
    let mainObserver = null; // Observes body for added original message windows
    let sidebarObserver = null; // Observes the #liste_messages content UL for changes
    let sidebarScanDebounceTimer = null; // Timer for debouncing sidebar scans

    // --- Utility Functions ---
    function getMyCharacterName() {
        const nameElement = document.getElementById('txt_pseudo');
        if (nameElement) return nameElement.textContent.trim();
        console.error("DMM: #txt_pseudo not found?");
        return null;
    }

    function waitForElement(selector, timeout = WAIT_FOR_ELEMENT_TIMEOUT, container = document) {
        return new Promise((resolve, reject) => {
            const startTime = Date.now();
            const interval = setInterval(() => {
                try {
                    const element = container.querySelector(selector);
                    // Check visibility more robustly
                    if (element && document.body.contains(element) && element.offsetParent !== null && getComputedStyle(element).visibility !== 'hidden' && getComputedStyle(element).display !== 'none') {
                        clearInterval(interval);
                        resolve(element);
                    } else if (Date.now() - startTime > timeout) {
                        clearInterval(interval);
                        reject(new Error(`Element ${selector} not found or not visible within ${timeout}ms`));
                    }
                } catch (e) {
                    clearInterval(interval);
                    console.error(`DMM waitForElement: Error during querySelector for "${selector}"`, e);
                    reject(new Error(`Error finding element ${selector}: ${e.message}`));
                }
            }, 50);
        });
    }

    /**
     * Formats remaining milliseconds into a user-friendly string.
     * @param {number} ms - Milliseconds remaining.
     * @returns {string} Formatted time string (e.g., "15 min left", "<1 min left").
     */
    function formatRemainingTime(ms) { // <<< NEW HELPER >>>
        if (ms <= 0) return ""; // No time left or invalid input

        const totalSeconds = Math.round(ms / 1000);
        const minutes = Math.floor(totalSeconds / 60);
        // const seconds = totalSeconds % 60; // Not using seconds for now

        if (minutes >= 1) {
            return `${minutes} min`;
        } else if (totalSeconds > 0) {
            return "<1 min";
        } else {
            return ""; // Should already be caught by ms <= 0, but safe fallback
        }
    }

    function bringWindowToFront(window) {
        // Get all DMM windows
        const allWindows = document.querySelectorAll('.custom-chat-window');
        let maxZ = 999999; // Base z-index

        // Find highest current z-index
        allWindows.forEach(w => {
            const z = parseInt(getComputedStyle(w).zIndex) || 0;
            maxZ = Math.max(maxZ, z);
        });

        // Set the clicked window higher than all others
        window.style.zIndex = (maxZ + 1).toString();
    }


    // --- Theme Color Management ---
    function getSavedGlobalThemeColor() {
        return localStorage.getItem(GLOBAL_THEME_STORAGE_KEY) || DEFAULT_THEME_COLOR;
    }
    function getConversationColors() {
        try {
            const stored = localStorage.getItem(CONVERSATION_COLORS_STORAGE_KEY);
            return stored ? JSON.parse(stored) : {};
        } catch (e) {
            console.error("DMM: Failed to parse conversation colors from localStorage.", e);
            return {};
        }
    }
    function saveConversationColors(allColors) {
        try {
            localStorage.setItem(CONVERSATION_COLORS_STORAGE_KEY, JSON.stringify(allColors));
        } catch (e) {
            console.error("DMM: Failed to save conversation colors to localStorage.", e);
        }
    }
    function getConversationSetting(conversationId) {
        const allColors = getConversationColors();
        const setting = allColors[conversationId];
        if (setting && typeof setting === 'object' && typeof setting.enabled === 'boolean' && typeof setting.color === 'string') {
            return setting;
        }
        return { enabled: false, color: DEFAULT_THEME_COLOR };
    }
    function setConversationSetting(conversationId, setting) {
        if (typeof setting !== 'object' || typeof setting.enabled !== 'boolean' || typeof setting.color !== 'string') {
            console.warn(`DMM: Invalid setting provided for conversation ${conversationId}:`, setting);
            return;
        }
        const allColors = getConversationColors();
        allColors[conversationId] = setting;
        saveConversationColors(allColors);
    }
    function applyCurrentTheme(chatWindow, conversationId) {
        if (!chatWindow || !conversationId) return;
        const specificSetting = getConversationSetting(conversationId);
        const globalColor = getSavedGlobalThemeColor();
        const effectiveColor = specificSetting.enabled ? specificSetting.color : globalColor;

        // Apply standard theme colors
        chatWindow.style.setProperty('--dmm-primary-color', effectiveColor);
        chatWindow.style.setProperty('--dmm-header-bg', `color-mix(in srgb, ${effectiveColor} 70%, #080808)`);
        chatWindow.style.setProperty('--dmm-button-hover-bg', `color-mix(in srgb, ${effectiveColor} 85%, #ffffff)`);
        chatWindow.style.setProperty('--dmm-bubble-timestamp', `color-mix(in srgb, ${effectiveColor} 40%, #ffffff)`);
        chatWindow.style.setProperty('--dmm-border-color', effectiveColor);
        chatWindow.style.setProperty('--dmm-menu-hover-bg', effectiveColor);
        chatWindow.style.setProperty('--dmm-resize-border', `color-mix(in srgb, ${effectiveColor} 50%, #667788)`);

        // Re-apply notification style if needed (theme change shouldn't clear it)
        const convData = ACTIVE_CONVERSATIONS[conversationId];
        const isMuted = isConversationMuted(conversationId);
        if (convData?.hasUnreadNotification && !isMuted) {
             chatWindow.classList.add('has-unread-notification');
        } else {
             chatWindow.classList.remove('has-unread-notification');
        }
    }
    function saveGlobalThemeColor(newColor) {
        localStorage.setItem(GLOBAL_THEME_STORAGE_KEY, newColor);
        for (const [convId, convData] of Object.entries(ACTIVE_CONVERSATIONS)) {
            if (convData.customWindow && document.body.contains(convData.customWindow)) {
                applyCurrentTheme(convData.customWindow, convId);
            }
        }
    }


    // --- Styles ---
     function addChatStyles() {
         GM_addStyle(`
             /* Styles pour la fenêtre de chat personnalisée */
             .custom-chat-window {
                 --dmm-primary-color: ${DEFAULT_THEME_COLOR}; /* Fallback */
                 --dmm-header-bg: color-mix(in srgb, var(--dmm-primary-color) 70%, #080808);
                 --dmm-button-hover-bg: color-mix(in srgb, var(--dmm-primary-color) 85%, #ffffff);
                 --dmm-bubble-timestamp: color-mix(in srgb, var(--dmm-primary-color) 40%, #ffffff);
                 --dmm-border-color: var(--dmm-primary-color);
                 --dmm-menu-hover-bg: var(--dmm-primary-color);
                 --dmm-resize-border: color-mix(in srgb, var(--dmm-primary-color) 50%, #667788);
                 position: fixed; z-index: 999999; width: 450px; height: 600px;
                 max-height: 95vh; max-width: 95vw; min-width: ${MIN_WINDOW_WIDTH}px; min-height: ${MIN_WINDOW_HEIGHT}px;
                 border: 1px solid var(--dmm-border-color); background-color: #101010; color: #e0e0e0;
                 border-radius: 5px; box-shadow: 0 0 15px color-mix(in srgb, var(--dmm-primary-color) 30%, transparent);
                 display: flex; flex-direction: column; top: 100px; left: calc(50% - 225px);
                 overflow: hidden; transition: max-height 0.3s ease-out, border-color 0.3s ease-in-out, box-shadow 0.3s ease-in-out; /* Added transitions */
             }
             .custom-chat-head {
                 background-color: var(--dmm-header-bg); color: #fff; padding: 6px 10px; font-weight: bold;
                 border-bottom: 1px solid var(--dmm-border-color); cursor: move; display: flex;
                 justify-content: space-between; align-items: center; border-radius: 5px 5px 0 0;
                 flex-shrink: 0; position: relative;
                 transition: background-color 0.3s ease-in-out, color 0.3s ease-in-out, border-bottom-color 0.3s ease-in-out; /* Add transition for smooth color change */
             }
             /* Style for Unread Notification */
             .custom-chat-window.has-unread-notification {
                border-color: ${UNREAD_BORDER_COLOR}; /* Change main border */
                box-shadow: 0 0 15px color-mix(in srgb, ${UNREAD_NOTIFICATION_COLOR} 40%, transparent); /* Change shadow color */
             }
             .custom-chat-window.has-unread-notification .custom-chat-head {
                 background-color: ${UNREAD_NOTIFICATION_COLOR};
                 color: ${UNREAD_TEXT_COLOR};
                 border-bottom-color: ${UNREAD_BORDER_COLOR};
             }
             .custom-chat-window.has-unread-notification .custom-chat-head .title {
                 color: ${UNREAD_TEXT_COLOR}; /* Ensure title text is dark */
             }
             .custom-chat-window.has-unread-notification .custom-chat-head .controls span {
                 color: #333; /* Darker control icons on yellow */
             }
             .custom-chat-window.has-unread-notification .custom-chat-head .controls span:hover {
                 color: #000; /* Black on hover */
             }
             /* End Unread Notification */

             .custom-chat-head .title { flex-grow: 1; padding-right: 10px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

             /* Styles for Header Mute Status */
             .custom-chat-head .mute-status-display {
                 font-size: 0.9em;
                 color: #ffcc66; /* Light orange/yellow */
                 margin-left: 10px; /* Space after title */
                 font-weight: normal;
                 display: none; /* Hidden by default */
                 vertical-align: middle; /* Align with title text */
                 white-space: nowrap; /* Prevent wrapping */
             }
             /* Unread notification state override for mute status */
              .custom-chat-window.has-unread-notification .custom-chat-head .mute-status-display {
                  color: var(--dmm-primary-color); /* Use theme color on yellow bg for contrast */
              }

             .custom-chat-head .controls { display: flex; align-items: center; flex-shrink: 0; white-space: nowrap; }
             .custom-chat-head .controls span { cursor: pointer; padding: 0 5px; font-size: 1.2em; font-family: Arial, sans-serif; font-weight: bold; user-select: none; line-height: 1; transition: color 0.2s ease; }
             .custom-chat-head .controls span:hover { color: #ffdddd; }
             .custom-chat-content { flex-grow: 1; overflow-y: auto; padding: 10px; background-color: #1a1a1a; display: flex; flex-direction: column; gap: 5px; transition: opacity 0.2s ease-out; }
             .custom-chat-content.loading::after { content: "Chargement des messages..."; display: block; text-align: center; padding: 20px; color: #ccc; font-style: italic; }
             .load-more-container { text-align: center; padding: 8px; border-bottom: 1px solid #2a2a2a; margin-bottom: 5px; flex-shrink: 0; }
             .load-more-link { color: #87ceeb; cursor: pointer; text-decoration: underline; font-size: 0.9em; }
             .load-more-link:hover { color: #aaeebb; }
             .load-more-link.loading { color: #aaa; cursor: default; text-decoration: none; }
             .load-more-link.loading::before { content: "Chargement... "; }
             .chat-bubble { max-width: 80%; padding: 8px 14px; border-radius: 18px; margin-bottom: 4px; line-height: 1.4; word-wrap: break-word; position: relative; }
             .bubble-content { white-space: pre-wrap; }
             .my-bubble { background-color: var(--dmm-primary-color); color: #ffffff; align-self: flex-end; border-bottom-right-radius: 5px; transition: background-color 0.3s ease-in-out; }
             .their-bubble { background-color: #3a3a3a; color: #e0e0e0; align-self: flex-start; border-bottom-left-radius: 5px; }
             .bubble-sender-name { font-size: 0.8em; font-weight: bold; color: #87ceeb; margin-bottom: 3px; }
             .bubble-timestamp { font-size: 0.7em; color: #a0a0a0; display: block; text-align: right; margin-top: 4px; clear: both; }
             .my-bubble .bubble-timestamp { color: var(--dmm-bubble-timestamp); transition: color 0.3s ease-in-out;}
             .custom-chat-reply { padding: 8px; border-top: 1px solid var(--dmm-border-color); background-color: #101010; display: flex; gap: 5px; flex-shrink: 0; transition: opacity 0.2s ease-out, border-color 0.3s ease-in-out; }
             .custom-chat-reply textarea { flex-grow: 1; height: 50px; min-height: 30px; max-height: 150px; padding: 5px; border: 1px solid #333; background-color: #222; color: #ddd; resize: vertical; font-family: inherit; font-size: 0.9em; }
             .custom-chat-reply button { padding: 10px 15px; background-color: var(--dmm-primary-color); color: white; border: none; border-radius: 3px; cursor: pointer; font-weight: bold; align-self: center; transition: background-color 0.2s ease; }
             .custom-chat-reply button:hover { background-color: var(--dmm-button-hover-bg); }
             .custom-chat-reply button:disabled { background-color: #555; cursor: not-allowed; }
             .hidden-original-databox { position: absolute !important; top: -9999px !important; left: -9999px !important; opacity: 0 !important; pointer-events: none !important; z-index: -1 !important; width: 1px !important; height: 1px !important; overflow: hidden !important; }
             .custom-chat-window.collapsed { max-height: 35px !important; min-height: 35px !important; height: 35px !important; }
             .custom-chat-window.collapsed .custom-chat-content,
             .custom-chat-window.collapsed .custom-chat-reply,
             .custom-chat-window.collapsed .participants-panel,
             .custom-chat-window.collapsed .color-picker-panel,
             .custom-chat-window.collapsed .more-opts-menu,
             .custom-chat-window.collapsed .resize-handle,
             .custom-chat-window.collapsed .mute-status-display { display: none; } /* Hide mute status when collapsed */
             .custom-chat-window.collapsed .custom-chat-head { border-radius: 5px; }
             .custom-chat-head .controls .theme-btn { padding: 0 8px; font-size: 1.1em; margin-right: 5px; font-family: 'Segoe UI Symbol', Arial, sans-serif; }
             .custom-chat-head .controls .participants-btn { padding: 0 8px; font-size: 1.2em; margin-right: 5px; font-family: 'Segoe UI Symbol', Arial, sans-serif; }
             .custom-chat-head .controls .more-opts-btn { padding: 0 8px; font-size: 1.4em; font-weight: bold; margin-right: 5px; font-family: 'Segoe UI Symbol', Arial, sans-serif; }
             .custom-chat-window .more-opts-menu { position: absolute; top: 35px; right: 5px; background-color: #2a2a2a; border: 1px solid var(--dmm-border-color); border-radius: 4px; box-shadow: 0 2px 5px rgba(0, 0, 0, 0.5); z-index: 1000001; min-width: 150px; padding: 5px 0; display: none; transition: border-color 0.3s ease-in-out; }
             .custom-chat-window .color-picker-panel { position: absolute; top: 35px; right: 5px; background-color: #2a2a2a; border: 1px solid var(--dmm-border-color); border-radius: 4px; box-shadow: 0 2px 5px rgba(0, 0, 0, 0.5); z-index: 1000001; padding: 10px; display: none; text-align: center; transition: border-color 0.3s ease-in-out; }
             .custom-chat-window .color-picker-panel label { display: block; margin-bottom: 5px; font-size: 0.9em; color: #ccc; }
             .custom-chat-window .color-picker-panel input[type="color"] { cursor: pointer; border: 1px solid #555; width: 50px; height: 30px; padding: 0; background-color: #333; }
             .custom-chat-window .color-picker-panel .reset-color-btn {
                 cursor: pointer;
                 margin-left: 8px;
                 padding-bottom: 15px;
                 font-size: 1em;
                 vertical-align: middle;
                 opacity: 0.8;
             }
             .custom-chat-window .color-picker-panel .reset-color-btn:hover {
                 opacity: 1;
             }
             .custom-chat-window .more-opts-menu .menu-item { padding: 8px 15px; color: #e0e0e0; cursor: pointer; font-size: 0.9em; white-space: nowrap; }
             .custom-chat-window .more-opts-menu .menu-item:hover { background-color: var(--dmm-menu-hover-bg); color: #ffffff; }
             .custom-chat-window .more-opts-menu hr { border: none; border-top: 1px solid #444; margin: 5px 0; }
             /* Style for settings items (color) */
             .custom-chat-window .more-opts-menu .convo-settings-item { display: flex; align-items: center; justify-content: space-between; padding: 6px 15px; font-size: 0.9em; color: #ccc; }
             .custom-chat-window .more-opts-menu .convo-settings-item label { margin-right: 8px; white-space: nowrap; cursor: pointer; }
             .custom-chat-window .more-opts-menu .convo-settings-item input[type="checkbox"] { margin-right: 5px; cursor: pointer; vertical-align: middle; }
             .custom-chat-window .more-opts-menu .convo-settings-item input[type="color"] { cursor: pointer; border: 1px solid #555; width: 35px; height: 20px; padding: 0; background-color: #333; vertical-align: middle; }
             .custom-chat-window .more-opts-menu .convo-settings-item input[type="color"]:disabled { cursor: not-allowed; opacity: 0.5; }

             /* Mute options styling (with checkmark) */
             .custom-chat-window .more-opts-menu .mute-option-item {
                 display: flex; /* Use flexbox for easy alignment */
                 align-items: center;
                 /* Reuse base menu-item padding etc. */
             }
             .custom-chat-window .more-opts-menu .mute-option-item .checkmark {
                 display: none; /* Hidden by default */
                 margin-right: 8px; /* Space between checkmark and text */
                 color: #66ff66; /* Green checkmark */
                 font-weight: bold;
                 font-size: 1.1em;
                 line-height: 1; /* Ensure alignment */
             }
             .custom-chat-window .more-opts-menu .mute-option-item .item-text {
                 flex-grow: 1; /* Allow text to take remaining space */
                 /* Style for timer text within the label */
                 color: #e0e0e0; /* Ensure consistent color */
             }
             /* Style for the timer part specifically if needed (e.g., slightly dimmer) */
             .custom-chat-window .more-opts-menu .mute-option-item .item-text span {
                 /* Example: Make timer slightly dimmer */
                 /* color: #bbb; */
                 /* font-style: italic; */
             }


             /* Participants Panel */
             .participants-panel { position: absolute; top: 0; right: -250px; width: 250px; height: 100%; background-color: rgba(31, 31, 31, 0.95); border-left: 1px solid var(--dmm-border-color); box-shadow: -2px 0 5px rgba(0, 0, 0, 0.4); z-index: 999998; display: flex; flex-direction: column; transition: right 0.3s ease-in-out, border-color 0.3s ease-in-out; overflow: hidden; }
             .participants-panel.active { right: 0; }
             .participants-panel-header { padding: 8px 12px; font-weight: bold; color: #fff; background-color: var(--dmm-header-bg); border-bottom: 1px solid var(--dmm-border-color); flex-shrink: 0; display: flex; justify-content: space-between; align-items: center; transition: background-color 0.3s ease-in-out, border-color 0.3s ease-in-out; }
             .participants-panel-header .close-panel-btn { font-size: 1.2em; cursor: pointer; padding: 0 5px; }
             .participants-panel-list { padding: 10px; overflow-y: auto; flex-grow: 1; color: #ccc; font-size: 0.9em; line-height: 1.4; }
             .participants-panel-list p { margin: 0; padding: 0; word-break: break-word; }
             .resize-handle { position: absolute; bottom: 0; right: 0; width: 15px; height: 15px; background-color: transparent; border-bottom: 2px solid var(--dmm-resize-border); border-right: 2px solid var(--dmm-resize-border); cursor: nwse-resize; z-index: 1000000; transition: border-color 0.3s ease-in-out; }
             .custom-chat-window.has-unread-notification .resize-handle { /* Optional: Change resize handle color too */
                 border-color: color-mix(in srgb, ${UNREAD_BORDER_COLOR} 50%, #667788);
             }

            /* Sidebar Mute Highlight */
            #liste_messages li.message.dmm-muted-sidebar-item .message_titre {
                color: ${SIDEBAR_MUTED_COLOR} !important; /* Use important to override potential inline styles */
                font-weight: bold; /* Optional: make it bolder */
            }
            #liste_messages li.message.dmm-muted-sidebar-item:hover .message_titre {
                /* Optional: Style on hover if needed */
                 text-decoration: line-through;
            }
            /* Ensure normal color when class is removed */
            #liste_messages li.message:not(.dmm-muted-sidebar-item) .message_titre {
                color: inherit !important; /* Revert to default color */
                font-weight: normal;
                text-decoration: none;
            }

         `);
     }


    // --- Dragging/Resizing ---
    function makeDraggable(element) {
        let pos1 = 0, pos2 = 0, pos3 = 0, pos4 = 0;
        const h = element.querySelector(".custom-chat-head");
        if (h) { h.onmousedown = dragMouseDown; }
        else { element.onmousedown = dragMouseDown; }
        function dragMouseDown(e) {
            // Prevent drag if clicking on controls, menus, panels, or resize handle
            if (e.target.closest('.controls span') || e.target.closest('.more-opts-menu') || e.target.closest('.participants-panel') || e.target.closest('.color-picker-panel') || e.target.classList.contains('resize-handle')) return;
            e = e || window.event;
            pos3 = e.clientX; pos4 = e.clientY;
            document.onmouseup = closeDragElement;
            document.onmousemove = elementDrag;
        }
        function elementDrag(e) {
            e = e || window.event;
            e.preventDefault();
            pos1 = pos3 - e.clientX; pos2 = pos4 - e.clientY;
            pos3 = e.clientX; pos4 = e.clientY;
            element.style.top = Math.max(0, (element.offsetTop - pos2)) + "px";
            element.style.left = (element.offsetLeft - pos1) + "px";
        }
        function closeDragElement() {
            document.onmouseup = null; document.onmousemove = null;
        }
    }
    function makeResizable(element, handle) {
        let startX, startY, startWidth, startHeight;
        handle.addEventListener('mousedown', function(e) {
            e.preventDefault();
            startX = e.clientX; startY = e.clientY;
            const computedStyle = document.defaultView.getComputedStyle(element);
            startWidth = parseInt(computedStyle.width, 10);
            startHeight = parseInt(computedStyle.height, 10);
            document.addEventListener('mousemove', doDrag, false);
            document.addEventListener('mouseup', stopDrag, false);
        }, false);
        function doDrag(e) {
            let newWidth = startWidth + e.clientX - startX;
            let newHeight = startHeight + e.clientY - startY;
            newWidth = Math.max(MIN_WINDOW_WIDTH, newWidth);
            newHeight = Math.max(MIN_WINDOW_HEIGHT, newHeight);
            newWidth = Math.min(window.innerWidth - element.offsetLeft - 5, newWidth); // Prevent dragging off-screen right
            newHeight = Math.min(window.innerHeight - element.offsetTop - 5, newHeight); // Prevent dragging off-screen bottom
            element.style.width = newWidth + 'px';
            element.style.height = newHeight + 'px';
        }
        function stopDrag() {
            document.removeEventListener('mousemove', doDrag, false);
            document.removeEventListener('mouseup', stopDrag, false);
        }
    }


    // --- Message Parsing and Fetching ---
    function parseMessageElement(element) {
        const id = element.id.replace('convers_', ''); // Used for *content fetching*, not the LI ID
        const timestamp = element.querySelector('.ligne1')?.textContent.trim();
        const senderLine = element.querySelector('.ligne2')?.textContent.trim();
        const senderMatch = senderLine?.match(/Message de (.*)/);
        const sender = senderMatch ? senderMatch[1] : '?';
        if (!id || !timestamp || !senderLine) {
            // console.warn("DMM parseMessageElement: Failed to parse element", element);
            return null;
        }
        return { id, timestamp, sender }; // 'id' here is the internal message_id for content
    }
    function fetchMessageContent(messageId, conversationId, callback) {
        GM_xmlhttpRequest({
            method: "GET",
            url: `https://www.dreadcast.net/Menu/Messaging/action=ReadMessage&id_message=${messageId}&id_conversation=${conversationId}`,
            timeout: 15000,
            onload: function(r) {
                if (r.status === 200 && r.responseText) {
                    try {
                        let p = new DOMParser(), x = p.parseFromString(r.responseText, "text/xml"), m = x.querySelector("message");
                        const content = m ? (m.textContent || m.innerHTML).trim() : "Erreur: Contenu message vide";
                        callback(content);
                    } catch (e) { console.error(`%cDMM fetchMessageContent[${conversationId}]: Parse XML error for msg ${messageId}`, "color: red", e); callback("Erreur: Parse XML"); }
                } else { console.warn(`%cDMM fetchMessageContent[${conversationId}]: Load error for msg ${messageId}, Status: ${r.status}`, "color: red"); callback(`Erreur: Load ${r.status}`); }
            },
            onerror: function(e) { console.error(`%cDMM fetchMessageContent[${conversationId}]: Network error for msg ${messageId}`, "color: red", e); callback("Erreur: Réseau"); },
            ontimeout: function() { console.warn(`%cDMM fetchMessageContent[${conversationId}]: Timeout for msg ${messageId}`, "color: red"); callback("Erreur: Timeout"); }
        });
    }
    async function parseAndFetchInitialMessages(originalWindow, conversationId) {
        const logPrefix = `DMM PFIM (${conversationId}):`;
        const defaultResult = { messages: [], participants: [], totalMessages: 0, latestId: null, oldestId: null, allLoaded: true };
        const conversationZone = originalWindow.querySelector('.zone_conversation');
        if (!conversationZone) { console.warn(`${logPrefix} No .zone_conversation found.`); return defaultResult; }
        let participants = [];
        try {
            const participantsTitleDiv = Array.from(conversationZone.querySelectorAll('div')).find(div => div.textContent.includes('Participants'));
            if (participantsTitleDiv) {
                let currentElement = participantsTitleDiv.nextElementSibling;
                let participantsString = '';
                // Find the <p> tag containing participant names, skipping over potential <br> or other tags.
                while(currentElement && currentElement.tagName !== 'P') {
                    currentElement = currentElement.nextElementSibling;
                }
                 // Check if we found the P tag and make sure it doesn't contain a message link (edge case)
                 if (currentElement && currentElement.tagName === 'P' && !currentElement.querySelector('.link.conversation')) {
                    participantsString = currentElement.textContent.trim();
                }
                if (participantsString) { participants = participantsString.split(',').map(name => name.trim()).filter(name => name.length > 0); }
                // else { console.warn(`${logPrefix} Participants list <p> tag not found or empty near title.`); }
            } // else { console.warn(`${logPrefix} Participants title div not found.`); }
        } catch (e) { console.warn(`${logPrefix} Failed to parse participants list`, e); }


        // Find elements with 'convers_' ID inside the zone_conversation to parse message details
        const allElements = Array.from(conversationZone.querySelectorAll('.link.conversation[id^="convers_"]'));
        const total = allElements.length;
        if (total === 0) { defaultResult.participants = participants; return defaultResult; }

        const fetchElements = allElements.slice(0, INITIAL_LOAD_COUNT);
        let fetchedData = [];
        let fetchPromises = [];
        for (const el of fetchElements) {
            const parsed = parseMessageElement(el); // Parse elements with 'convers_' ID
            if (parsed) {
                let msgData = { ...parsed, content: null }; // msgData.id is the message_id (from convers_ID)
                fetchedData.push(msgData);
                fetchPromises.push(new Promise((resolve) => {
                    fetchMessageContent(msgData.id, conversationId, (content) => { // Use msgData.id here
                        const targetMsg = fetchedData.find(m => m.id === msgData.id);
                        if (targetMsg) targetMsg.content = content;
                        resolve();
                    });
                }));
            }
        }
        try {
            if (fetchPromises.length > 0) await Promise.all(fetchPromises);
            fetchedData.reverse(); // Display oldest first within the initial batch
            const latestId = fetchedData.length > 0 ? fetchedData[fetchedData.length - 1].id : null;
            const oldestId = fetchedData.length > 0 ? fetchedData[0].id : null;
            const allLoaded = total <= INITIAL_LOAD_COUNT;
            const result = { messages: fetchedData, participants: participants, totalMessages: total, latestId: latestId, oldestId: oldestId, allLoaded: allLoaded };
            return result;
        } catch (error) {
            console.error(`${logPrefix} Error during Promise.all or processing:`, error);
            defaultResult.participants = participants;
            return defaultResult;
        }
    }


    // --- UI Building and Manipulation ---

    /**
     * Adds a message bubble to the chat window.
     * @param {object} msgData - The message data { id, timestamp, sender, content }. id is message_id.
     * @param {HTMLElement} container - The DOM element to add the bubble to (.custom-chat-content).
     * @param {string} conversationId - The ID of the conversation.
     * @param {boolean} [prepend=false] - True if the bubble should be added to the top (loading older).
     * @param {boolean} [isInitialLoad=false] - True if this bubble is being added during the initial window build.
     * @returns {string|null} The ID of the added message, or null if not added.
     */
    function addBubble(msgData, container, conversationId, prepend = false, isInitialLoad = false) {
        if (!MY_NAME || !container) {
            console.warn(`DMM addBubble: MY_NAME (${MY_NAME}) or container invalid. Cannot add bubble.`, msgData);
            return null;
        }
        const isMine = msgData.sender === MY_NAME;


        if (msgData.id) {
            const existingById = container.querySelector(`.chat-bubble[data-message-id="${msgData.id}"]`);
            if (existingById) {
                // console.log(`%cDMM addBubble: Preventing duplicate add for ID ${msgData.id}`, "color: gray");
                return null; // Return null to indicate it wasn't added
            }
        }

        const bubble = document.createElement('div');
        bubble.classList.add('chat-bubble');
        if (msgData.id) bubble.dataset.messageId = msgData.id; // Store message_id
        bubble.classList.add(isMine ? 'my-bubble' : 'their-bubble');

        if (!isMine) {
            const n = document.createElement('div');
            n.classList.add('bubble-sender-name');
            n.textContent = msgData.sender;
            bubble.appendChild(n);
        }

        const c = document.createElement('div');
        c.classList.add('bubble-content');
        const tempDiv = document.createElement('div');
        tempDiv.textContent = msgData.content || "..."; // Set text content safely
        c.innerHTML = tempDiv.innerHTML.replace(/\n/g, '<br>'); // Convert newlines to <br>
        bubble.appendChild(c);

        if (msgData.timestamp) {
            const t = document.createElement('span');
            t.classList.add('bubble-timestamp');
            t.textContent = msgData.timestamp;
            bubble.appendChild(t);
        }

        const isScrolledToBottom = Math.abs(container.scrollHeight - container.clientHeight - container.scrollTop) < 50;
        const shouldScrollDown = !prepend && (isScrolledToBottom || isMine);

        if (prepend) {
            const loadMoreElem = container.querySelector('.load-more-container');
            if (loadMoreElem) {
                loadMoreElem.insertAdjacentElement('afterend', bubble);
            } else {
                container.insertBefore(bubble, container.firstChild);
            }
        } else {
            container.appendChild(bubble);
        }

        // --- Play Sound & Set Notification State --- //
        if (!isMine && !prepend && !isInitialLoad) {
            const isConvoMuted = isConversationMuted(conversationId); // Conversation specific mute

            // Check BOTH conversation mute AND global mute <<< MODIFIED >>>
            if (!isConvoMuted && !isGloballyMuted) {
                // Sound
                try {
                    const audio = new Audio(NOTIFICATION_SOUND_URL);
                    audio.play().catch(e => {
                        console.warn("DMM: Open window audio playback failed (interaction might be required for sound):", e.name, e.message);
                    });
                } catch (e) {
                    console.error("DMM: Error creating or playing open window notification sound:", e);
                }

                // Visual Notification State (only if conversation is not muted)
                const convData = ACTIVE_CONVERSATIONS[conversationId];
                const chatWindow = container.closest('.custom-chat-window');
                 if (convData && chatWindow && !chatWindow.classList.contains('has-unread-notification')) {
                     convData.hasUnreadNotification = true;
                     chatWindow.classList.add('has-unread-notification');
                 }

            } else if (isConvoMuted) {
                 // Still handle visual notification if window is open and conversation is muted (no sound)
                 const convData = ACTIVE_CONVERSATIONS[conversationId];
                 const chatWindow = container.closest('.custom-chat-window');
                 if (convData && chatWindow && !chatWindow.classList.contains('has-unread-notification')) {
                    // We might still want to visually indicate a new message arrived, even if muted.
                    // If you DON'T want the yellow highlight for muted convos, remove this part.
                    // For now, let's keep it, as the yellow indicates 'unread' visually.
                    convData.hasUnreadNotification = true;
                    chatWindow.classList.add('has-unread-notification');
                 }
                 // console.log(`%cDMM addBubble: Skipped sound for MUTED conversation ${conversationId}`, "color: gray;");
             } else if (isGloballyMuted) {
                 // Globally muted - No sound, but still handle visual notification if window is open
                 const convData = ACTIVE_CONVERSATIONS[conversationId];
                 const chatWindow = container.closest('.custom-chat-window');
                 if (convData && chatWindow && !chatWindow.classList.contains('has-unread-notification')) {
                    convData.hasUnreadNotification = true;
                    chatWindow.classList.add('has-unread-notification');
                 }
                 // console.log(`%cDMM addBubble: Skipped sound due to GLOBAL mute for conversation ${conversationId}`, "color: gray;");
             }
        }


        if (shouldScrollDown) {
            requestAnimationFrame(() => {
                if (container && container.isConnected) {
                    container.scrollTop = container.scrollHeight;
                }
            });
        }
        return msgData.id; // Return the message_id of the added bubble
    } // --- END of addBubble function ---


    function buildInitialChatUI(messages, container, conversationId, allMessagesLoaded) {
        container.innerHTML = '';
        container.classList.remove('loading');
        if (!MY_NAME) {
            container.innerHTML = "<p style='color:red;'>Erreur: Nom utilisateur non trouvé.</p>";
            return { latestId: null, oldestId: null };
        }
        if (!allMessagesLoaded) {
            addLoadMoreLink(container, conversationId);
        }
        let firstId = null; // Oldest message_id in this batch
        let lastId = null; // Latest message_id in this batch
        messages.forEach(msg => {
            // Pass 'true' for the new isInitialLoad parameter
            const addedId = addBubble(msg, container, conversationId, false, true); // isInitialLoad=true here
            if (addedId) { // addedId is the message_id
                const addedIdNum = parseInt(addedId);
                if (!firstId || (addedIdNum < parseInt(firstId))) { firstId = addedId; }
                if (!lastId || (addedIdNum > parseInt(lastId))) { lastId = addedId; }
            }
        });
        // Scroll to bottom after initial build
        setTimeout(() => { if (container && container.isConnected) container.scrollTop = container.scrollHeight; }, 100);
        return { latestId: lastId, oldestId: firstId }; // Return message_ids
    }


    function addLoadMoreLink(container, conversationId) {
        if (container.querySelector('.load-more-container')) return; // Avoid adding multiple links
        const loadMoreContainer = document.createElement('div');
        loadMoreContainer.classList.add('load-more-container');
        const loadMoreLink = document.createElement('a');
        loadMoreLink.classList.add('load-more-link');
        loadMoreLink.textContent = 'Afficher les messages précédents';
        loadMoreLink.href = '#';
        loadMoreLink.onclick = (e) => {
            e.preventDefault();
            const cData = ACTIVE_CONVERSATIONS[conversationId];
            if (cData && !cData.isLoadingOlder) {
                loadOlderMessages(conversationId, loadMoreLink);
            }
        };
        loadMoreContainer.appendChild(loadMoreLink);
        container.insertBefore(loadMoreContainer, container.firstChild);
    }


    async function loadOlderMessages(conversationId, linkElement) {
        const cData = ACTIVE_CONVERSATIONS[conversationId];
        const container = cData?.customWindow?.querySelector('.custom-chat-content');
        if (!cData || !container || cData.isLoadingOlder || cData.allMessagesLoaded) {
            if (cData?.allMessagesLoaded && linkElement?.parentElement) linkElement.parentElement.remove(); // Clean up link if already loaded
            return;
        }
        cData.isLoadingOlder = true;
        linkElement.classList.add('loading');
        linkElement.textContent = ''; // Clear text while loading


        try {
             // Fetch the full conversation page HTML to get all message elements
             const response = await new Promise((resolve, reject) => {
                 GM_xmlhttpRequest({
                     method: "GET", url: `https://www.dreadcast.net/Menu/Messaging/action=OpenMessage&id_conversation=${conversationId}`, timeout: 15000,
                     onload: (res) => { if (res.status === 200 && res.responseText) resolve(res.responseText); else reject(`HTTP Status ${res.status}`); },
                     onerror: (err) => reject("Network Error"), ontimeout: () => reject("Timeout")
                 });
             });

             const parser = new DOMParser();
             const doc = parser.parseFromString(response, 'text/html');
             const messageList = doc.querySelector('.zone_conversation');
             if (!messageList) throw new Error("Could not find .zone_conversation in older messages response.");

             // Get all message links (convers_...) from the fetched HTML
             const allElements = Array.from(messageList.querySelectorAll('.link.conversation[id^="convers_"]'));
             const currentOldestId = cData.oldestMessageId; // This is a message_id
             let olderElementsToLoad = [];

             // Find the index of the *element* corresponding to the current oldest message ID
             const currentOldestIndex = allElements.findIndex(el => el.id.replace('convers_', '') === currentOldestId);

             if (currentOldestIndex !== -1 && currentOldestId) {
                 // Find elements *before* the current oldest one in the full list (since list is newest first)
                 const startIndex = currentOldestIndex + 1;
                 const endIndex = Math.min(startIndex + LOAD_MORE_COUNT, allElements.length);
                 olderElementsToLoad = allElements.slice(startIndex, endIndex);
                 // console.log(`DMM LoadOlder: Found current oldest index ${currentOldestIndex}. Slicing from ${startIndex} to ${endIndex} (total ${allElements.length})`);
             } else if (currentOldestId) {
                  console.warn(`DMM LoadOlder: Could not find index for current oldest message ID ${currentOldestId}. List might have changed?`);
                  linkElement.textContent = 'Erreur index'; linkElement.style.color = '#aaa'; linkElement.onclick = (e) => e.preventDefault();
                  cData.isLoadingOlder = false; // Unlock
                  return;
             } else {
                 // This case should ideally not happen if initial load worked, but handle it.
                 console.warn(`DMM LoadOlder: Cannot load older - current oldest message ID is null.`);
                 cData.allMessagesLoaded = true; // Assume loaded if we have no starting point
                 if(linkElement.parentElement) linkElement.parentElement.remove();
                 cData.isLoadingOlder = false; // Unlock
                 return;
             }


             if (olderElementsToLoad.length > 0) {
                 let fetchedData = []; let fetchPromises = [];
                 for (const el of olderElementsToLoad) {
                     const parsed = parseMessageElement(el); // Parse the 'convers_' element
                     // Ensure we don't re-add a bubble that might already exist somehow (defensive check)
                     if (parsed && !container.querySelector(`.chat-bubble[data-message-id="${parsed.id}"]`)) {
                         let msgData = { ...parsed, content: null }; // msgData.id is message_id
                         fetchedData.push(msgData);
                         fetchPromises.push(new Promise((resolve) => {
                             fetchMessageContent(msgData.id, conversationId, (content) => { // Use message_id
                                 const targetMsg = fetchedData.find(m => m.id === msgData.id);
                                 if (targetMsg) targetMsg.content = content; resolve();
                             });
                         }));
                     }
                 }

                 if (fetchPromises.length > 0) await Promise.all(fetchPromises);

                 fetchedData.reverse(); // Reverse so oldest fetched appears first (top) in the UI

                 const oldScrollHeight = container.scrollHeight; const oldScrollTop = container.scrollTop;

                 let newOldestId = cData.oldestMessageId; // Start with current oldest message_id
                 fetchedData.forEach(msg => {
                     // Pass 'false' for the isInitialLoad parameter when loading older
                     const prependedId = addBubble(msg, container, conversationId, true, false); // prepend=true, isInitialLoad=false; prependedId is message_id
                     // Update the overall oldest message ID if the prepended one is older
                     if (prependedId && (!newOldestId || (parseInt(prependedId) < parseInt(newOldestId)))) {
                         newOldestId = prependedId;
                     }
                 });

                 // Restore scroll position relative to the old top content
                 if(fetchedData.length > 0) {
                      const newScrollHeight = container.scrollHeight;
                      container.scrollTop = oldScrollTop + (newScrollHeight - oldScrollHeight);
                 }

                 cData.oldestMessageId = newOldestId; // Update the tracked oldest message ID

                 // Check if we've reached the end of the conversation history
                 const endReached = (currentOldestIndex + 1 + olderElementsToLoad.length) >= allElements.length;
                 if (endReached || olderElementsToLoad.length < LOAD_MORE_COUNT) {
                     cData.allMessagesLoaded = true;
                     if (linkElement.parentElement) linkElement.parentElement.remove(); // Remove the link
                 }
             } else if (!cData.allMessagesLoaded && currentOldestId) {
                 // If no elements were found to load, but we thought there were more
                 // console.log(`DMM LoadOlder: No older elements found after index ${currentOldestIndex}. Marking as fully loaded.`);
                 cData.allMessagesLoaded = true;
                 if (linkElement.parentElement) linkElement.parentElement.remove();
             }

        } catch (error) {
             console.error(`DMM: Error loading older messages for ${conversationId}:`, error);
             linkElement.textContent = 'Erreur chargement'; linkElement.style.color = 'red';
             linkElement.style.cursor = 'default'; linkElement.onclick = (e) => e.preventDefault(); // Prevent retries on error
        } finally {
             cData.isLoadingOlder = false;
             // Restore link text if still loading and no error occurred and not fully loaded
             if (!cData.allMessagesLoaded && linkElement.classList.contains('loading') && !linkElement.textContent.includes('Erreur')) {
                 linkElement.classList.remove('loading');
                 linkElement.textContent = 'Afficher les messages précédents';
             } else if (cData.allMessagesLoaded && linkElement.parentElement) {
                 // Ensure link is removed if finally block confirms all loaded
                 linkElement.parentElement.remove();
             }
        }
    }


    let closeChatWindow = (conversationId, options = { removeOriginal: true }) => {
        // Ensure timer clearing happens *before* data deletion
        const cData = ACTIVE_CONVERSATIONS[conversationId]; // Get data first
        if (cData?.muteTimerIntervalId) {
            clearInterval(cData.muteTimerIntervalId);
            // console.log(`%cDMM Mute Timer: Cleared interval ${cData.muteTimerIntervalId} on window close for ${conversationId}`, "color: gray");
        }

        const customWindowId = `custom-chat-${conversationId}`;
        const chatWindow = document.getElementById(customWindowId);
        if (chatWindow) { chatWindow.remove(); }

        if (cData) { // Check if data existed (might have already been partially cleaned)
            const oRef = cData.originalWindow;
             // Only remove original if requested AND it wasn't specifically revealed for 'invite' action
             const shouldRemove = options.removeOriginal && oRef?.dataset.modernized !== 'revealed_for_invite';
            if (shouldRemove && oRef?.parentNode) {
                try { oRef.remove(); } catch (e) { console.warn(`DMM: Error removing original window ${conversationId} on close:`, e); }
            }
            delete ACTIVE_CONVERSATIONS[conversationId]; // Delete data *after* using it
             // console.log(`DMM: Closed window and deleted data for conversation ${conversationId}. Original removed: ${shouldRemove}`);
        }
    };


    function populateConversationSettingsUI(conversationId, checkbox, colorInput) {
        const setting = getConversationSetting(conversationId);
        checkbox.checked = setting.enabled;
        colorInput.value = setting.enabled ? setting.color : getSavedGlobalThemeColor(); // Show global if disabled
        colorInput.disabled = !setting.enabled;
    }


     function createCustomWindow(conversationId, otherParticipantName_UNUSED, initialResult, originalWindowRef) {
         const { messages, participants, totalMessages, latestId: initialLatestId, oldestId: initialOldestId, allLoaded } = initialResult;
         const windowId = `custom-chat-${conversationId}`;
         if (document.getElementById(windowId)) {
             // If DMM window already exists, just update the original ref and hide the new one.
             const existingData = ACTIVE_CONVERSATIONS[conversationId];
             if (existingData) {
                 existingData.originalWindow = originalWindowRef;
             }
             if (originalWindowRef?.parentNode) {
                 originalWindowRef.classList.add('hidden-original-databox'); // Hide the duplicate original
                 originalWindowRef.dataset.modernized = 'replaced'; // Mark as handled
             }
             console.warn(`DMM: createCustomWindow called for existing ID ${conversationId}. Updated original ref.`);
             const existingWindow = document.getElementById(windowId);
             if(existingWindow) {
                 bringWindowToFront(existingWindow); // Use new function instead of direct z-index
                 const txtArea = existingWindow.querySelector('.custom-chat-reply textarea');
                 if (txtArea) txtArea.focus();
             }
            return; // Don't create a new window
         }


         // --- Create Window Structure ---
         const chatWindow = document.createElement('div');
         chatWindow.id = windowId;
         chatWindow.classList.add('custom-chat-window');
         chatWindow.style.zIndex = '999999'; // Set initial z-index
         applyCurrentTheme(chatWindow, conversationId);

         // Add click handler to bring window to front
         chatWindow.addEventListener('mousedown', function(e) {
             // Don't change z-index if clicking close button or menu items
             if (!e.target.closest('.controls span') &&
                 !e.target.closest('.more-opts-menu') &&
                 !e.target.closest('.participants-panel') &&
                 !e.target.closest('.color-picker-panel')) {
                 bringWindowToFront(chatWindow);
             }
         });

         const head = document.createElement('div'); head.classList.add('custom-chat-head'); let actualTitleText = `Conversation ${conversationId}`; const originalTitleElement = originalWindowRef?.querySelector('.head .title'); if (originalTitleElement) { actualTitleText = originalTitleElement.textContent.trim(); } else { actualTitleText = `Messages ${conversationId}`; } const title = document.createElement('span'); title.classList.add('title'); title.textContent = actualTitleText; title.title = actualTitleText;

         // Add Mute Status Display
         const muteStatusDisplay = document.createElement('span');
         muteStatusDisplay.classList.add('mute-status-display');
         title.insertAdjacentElement('afterend', muteStatusDisplay); // Insert after title

         const controls = document.createElement('div'); controls.classList.add('controls'); const themeBtn = document.createElement('span'); themeBtn.classList.add('theme-btn'); themeBtn.innerHTML = '🎨'; themeBtn.title = 'Changer la couleur GLOBALE du thème'; controls.appendChild(themeBtn); const participantsBtn = document.createElement('span'); participantsBtn.classList.add('participants-btn'); participantsBtn.innerHTML = '👥'; participantsBtn.title = 'Afficher les participants'; controls.appendChild(participantsBtn); const moreOptsBtn = document.createElement('span'); moreOptsBtn.classList.add('more-opts-btn'); moreOptsBtn.innerHTML = '⋮'; moreOptsBtn.title = "Plus d'options"; controls.appendChild(moreOptsBtn); const closeBtn = document.createElement('span'); closeBtn.innerHTML = '×'; closeBtn.title = 'Fermer'; controls.appendChild(closeBtn); head.appendChild(title); head.appendChild(controls); chatWindow.appendChild(head);

         const content = document.createElement('div'); content.classList.add('custom-chat-content', 'loading'); chatWindow.appendChild(content);

         const replyDiv = document.createElement('div'); replyDiv.classList.add('custom-chat-reply'); const textarea = document.createElement('textarea'); textarea.placeholder = 'Écrire un message...'; textarea.setAttribute('aria-label', 'Message reply input'); const sendButton = document.createElement('button'); sendButton.textContent = 'Envoyer'; replyDiv.appendChild(textarea); replyDiv.appendChild(sendButton); chatWindow.appendChild(replyDiv);

         // --- More Options Menu Structure ---
         const moreOptionsMenu = document.createElement('div'); moreOptionsMenu.classList.add('more-opts-menu');
         const inviteItem = document.createElement('div'); inviteItem.classList.add('menu-item'); inviteItem.textContent = 'Inviter'; inviteItem.dataset.action = 'invite'; moreOptionsMenu.appendChild(inviteItem);
         const markUnreadItem = document.createElement('div'); markUnreadItem.classList.add('menu-item'); markUnreadItem.textContent = 'Marquer non lu'; markUnreadItem.dataset.action = 'mark_unread'; moreOptionsMenu.appendChild(markUnreadItem);
         const deleteItem = document.createElement('div'); deleteItem.classList.add('menu-item'); deleteItem.textContent = 'Supprimer'; deleteItem.dataset.action = 'delete'; moreOptionsMenu.appendChild(deleteItem);
         const settingsHr = document.createElement('hr'); moreOptionsMenu.appendChild(settingsHr);

         // Specific Color Setting
         const convoSettingsWrapper = document.createElement('div'); convoSettingsWrapper.classList.add('convo-settings-item');
         const specificColorLabel = document.createElement('label'); specificColorLabel.textContent = 'Couleur Spécifique:'; specificColorLabel.htmlFor = `dmm-specific-cb-${conversationId}`;
         const specificColorCheckbox = document.createElement('input'); specificColorCheckbox.type = 'checkbox'; specificColorCheckbox.id = `dmm-specific-cb-${conversationId}`; specificColorCheckbox.title = 'Activer une couleur unique pour cette conversation';
         const specificColorInput = document.createElement('input'); specificColorInput.type = 'color'; specificColorInput.id = `dmm-specific-color-${conversationId}`; specificColorInput.title = 'Choisir la couleur spécifique pour cette conversation';
         convoSettingsWrapper.appendChild(specificColorLabel);
         convoSettingsWrapper.appendChild(specificColorCheckbox);
         convoSettingsWrapper.appendChild(specificColorInput);
         moreOptionsMenu.appendChild(convoSettingsWrapper);

         // --- Mute Options ---
         const muteOptionsTitle = document.createElement('div');
         muteOptionsTitle.textContent = 'Mute Options:';
         muteOptionsTitle.style.padding = '6px 15px 3px'; // Style as a title
         muteOptionsTitle.style.fontSize = '0.8em';
         muteOptionsTitle.style.color = '#aaa';
         muteOptionsTitle.style.fontWeight = 'bold';
         moreOptionsMenu.appendChild(muteOptionsTitle);

         const muteOptionsContainer = document.createElement('div');
         muteOptionsContainer.classList.add('mute-options-container'); // Add a class for styling/selection
         moreOptionsMenu.appendChild(muteOptionsContainer);

         // Define options
         const muteChoices = [
             { label: 'Unmute', duration: MUTE_DURATIONS.UNMUTE },
             { label: 'Mute 2 min', duration: MUTE_DURATIONS.TWO_MINUTES },
             { label: 'Mute 15 min', duration: MUTE_DURATIONS.FIFTEEN_MINUTES },
             { label: 'Mute 1 hour', duration: MUTE_DURATIONS.ONE_HOUR },
             { label: 'Mute Forever', duration: MUTE_DURATIONS.FOREVER }
         ];

         // Create mute option items with checkmarks
         muteChoices.forEach(choice => {
             const item = document.createElement('div');
             item.classList.add('menu-item', 'mute-option-item'); // Add class for click listener

             const checkmarkSpan = document.createElement('span');
             checkmarkSpan.classList.add('checkmark');
             checkmarkSpan.innerHTML = '✓';
             item.appendChild(checkmarkSpan);

             const textSpan = document.createElement('span');
             textSpan.classList.add('item-text');
             textSpan.textContent = choice.label; // Set initial label
             item.appendChild(textSpan);

             item.dataset.duration = choice.duration === null ? 'null' : String(choice.duration); // Store duration
             item.dataset.originalLabel = choice.label; // Store original label for timer reset
             item.title = `${choice.label}`; // Initial title
             muteOptionsContainer.appendChild(item);
         });
         // --- Fin Mute Options ---

         chatWindow.appendChild(moreOptionsMenu); // Add the completed menu

         // --- Other Panels ---
         const participantsPanel = document.createElement('div'); participantsPanel.classList.add('participants-panel'); const panelHeader = document.createElement('div'); panelHeader.classList.add('participants-panel-header'); panelHeader.textContent = 'Participants'; const closePanelBtn = document.createElement('span'); closePanelBtn.classList.add('close-panel-btn'); closePanelBtn.innerHTML = '×'; closePanelBtn.title = 'Fermer'; panelHeader.appendChild(closePanelBtn); participantsPanel.appendChild(panelHeader); const participantsListDiv = document.createElement('div'); participantsListDiv.classList.add('participants-panel-list'); participantsPanel.appendChild(participantsListDiv); chatWindow.appendChild(participantsPanel);

         const colorPickerPanel = document.createElement('div');
         colorPickerPanel.classList.add('color-picker-panel');
         const colorLabel = document.createElement('label');
         colorLabel.textContent = 'Couleur Globale :';
         colorPickerPanel.appendChild(colorLabel);
         const colorInput = document.createElement('input');
         colorInput.type = 'color';
         colorInput.value = getSavedGlobalThemeColor();
         const resetColorBtn = document.createElement('span'); // Add reset button
         resetColorBtn.textContent = '❌';
         resetColorBtn.title = 'Rétablir la couleur par défaut';
         resetColorBtn.classList.add('reset-color-btn');
         colorPickerPanel.appendChild(colorInput);
         colorPickerPanel.appendChild(resetColorBtn); // Add reset button
         chatWindow.appendChild(colorPickerPanel);

         const resizeHandle = document.createElement('div');
         resizeHandle.classList.add('resize-handle');
         resizeHandle.title = 'Redimensionner';
         chatWindow.appendChild(resizeHandle);

         // --- Event Listeners & State ---
         let clickOutsideMenuHandler = null; let clickOutsidePanelHandler = null; let clickOutsideColorPickerHandler = null;

         // Function and Listeners to Clear Notification
         const clearNotification = () => {
             const convData = ACTIVE_CONVERSATIONS[conversationId];
             if (convData && convData.hasUnreadNotification) {
                  const isMuted = isConversationMuted(conversationId);
                  if (!isMuted) {
                      convData.hasUnreadNotification = false;
                      chatWindow.classList.remove('has-unread-notification');
                      // console.log(`%cDMM: Cleared unread notification for ${conversationId} via interaction.`, "color: green");
                  } else {
                      convData.hasUnreadNotification = false; // Still clear the flag even if muted
                      // console.log(`%cDMM: Cleared hasUnreadNotification flag for MUTED conversation ${conversationId} via interaction.`, "color: gray");
                  }
             }
         };
         chatWindow.addEventListener('mousedown', clearNotification, true);
         chatWindow.addEventListener('focusin', clearNotification);


         const closeThisChatWindow = (options = { removeOriginal: true }) => {
             chatWindow.removeEventListener('mousedown', clearNotification, true);
             chatWindow.removeEventListener('focusin', clearNotification);

             // Call original close function - this handles interval clearing and data deletion now
             closeChatWindow(conversationId, options);

             // Cleanup click handlers
             if (clickOutsideMenuHandler) { document.removeEventListener('click', clickOutsideMenuHandler, true); clickOutsideMenuHandler = null; }
             if (clickOutsidePanelHandler) { document.removeEventListener('click', clickOutsidePanelHandler, true); clickOutsidePanelHandler = null; }
             if (clickOutsideColorPickerHandler) { document.removeEventListener('click', clickOutsideColorPickerHandler, true); clickOutsideColorPickerHandler = null; }
         };

         const closeOtherPopups = (except) => { if (except !== 'menu' && moreOptionsMenu.style.display === 'block') { moreOptionsMenu.style.display = 'none'; if (clickOutsideMenuHandler) document.removeEventListener('click', clickOutsideMenuHandler, true); clickOutsideMenuHandler = null; } if (except !== 'panel' && participantsPanel.classList.contains('active')) { participantsPanel.classList.remove('active'); if (clickOutsidePanelHandler) document.removeEventListener('click', clickOutsidePanelHandler, true); clickOutsidePanelHandler = null; } if (except !== 'color' && colorPickerPanel.style.display === 'block') { colorPickerPanel.style.display = 'none'; if (clickOutsideColorPickerHandler) document.removeEventListener('click', clickOutsideColorPickerHandler, true); clickOutsideColorPickerHandler = null; } };

         closeBtn.onclick = () => closeThisChatWindow({ removeOriginal: true });

         sendButton.onclick = () => { // No changes needed here for mute highlight
             const messageText = textarea.value.trim();
             const cData = ACTIVE_CONVERSATIONS[conversationId];
             if (!messageText || sendButton.disabled) { if (!messageText) textarea.focus(); return; }
             if (!cData) { console.error(`DMM SendError[${conversationId}]: Conversation data not found!`); alert("Erreur critique DMM: Données de conversation manquantes."); return; }

             const currentOriginalWindow = cData.originalWindow;
             if (!currentOriginalWindow || !document.body.contains(currentOriginalWindow) || !currentOriginalWindow.querySelector('.zone_reponse textarea[name=nm_texte]') || !currentOriginalWindow.querySelector('.zone_reponse .btnTxt[onclick*="sendMessage"]')) {
                 console.error(`DMM SendError[${conversationId}]: Original window reference lost, detached, or incomplete. Refresh might be needed.`);
                 alert("Erreur DMM: Référence à la fenêtre originale perdue ou invalide. La page pourrait nécessiter un rafraîchissement ou la réouverture de la conversation.");
                 sendButton.disabled = true;
                 sendButton.textContent = 'Erreur Orig.';
                 return;
             }
             sendButton.disabled = true;
             const originalButtonText = sendButton.textContent;
             sendButton.textContent = 'Envoi...';
             let sendAttemptError = null;
             let originalClickSuccess = false;
             const originalTextarea = currentOriginalWindow.querySelector('.zone_reponse textarea[name=nm_texte]');
             const originalSendButton = currentOriginalWindow.querySelector('.zone_reponse .btnTxt[onclick*="sendMessage"]');

             if (originalTextarea && originalSendButton) {
                 try {
                     originalTextarea.value = messageText;
                     originalSendButton.click();
                     originalClickSuccess = true;
                     textarea.value = '';
                 } catch (e) { sendAttemptError = e; console.error(`%cDMM SendError[${conversationId}]: Error clicking original send button.`, "color: red", e); sendButton.textContent = 'Erreur Envoi'; }
             } else { sendAttemptError = new Error("Could not find original send elements just before use."); console.error(`%cDMM SendError[${conversationId}]: ${sendAttemptError.message}`, "color: red"); sendButton.textContent = 'Erreur Config'; }

             if (originalClickSuccess) {
                 GM_xmlhttpRequest({
                     method: "GET", url: `https://www.dreadcast.net/Menu/Messaging/action=OpenMessage&id_conversation=${conversationId}`, timeout: 10000,
                     onload: function(response) {
                         const currentSendButton = document.querySelector(`#custom-chat-${conversationId} .custom-chat-reply button`);
                         if (response.status === 200 && response.responseText) {
                             try {
                                 const latestCData = ACTIVE_CONVERSATIONS[conversationId];
                                 if (latestCData && latestCData.customWindow && document.body.contains(latestCData.customWindow)) {
                                     handleOpenMessageResponse(conversationId, response.responseText);
                                 }
                                 if (currentSendButton) { currentSendButton.textContent = originalButtonText; currentSendButton.disabled = false; }
                             } catch (handlerError) { console.error(`%cDMM SendError[${conversationId}]: Error in handleOpenMessageResponse after immediate fetch.`, "color: red", handlerError); if (currentSendButton) { currentSendButton.textContent = 'Erreur MàJ'; setTimeout(() => { const btn = document.querySelector(`#custom-chat-${conversationId} .custom-chat-reply button`); if (btn) { btn.disabled = false; btn.textContent = originalButtonText; } }, 2000); } }
                         } else { console.warn(`%cDMM Send[${conversationId}]: Immediate OpenMessage failed. Status: ${response.status}. UI will update later via /Check.`, "color: orange"); sendAttemptError = new Error(`Immediate OpenMessage fetch failed with status ${response.status}`); if (currentSendButton) { currentSendButton.textContent = 'MàJ différée'; setTimeout(() => { const btn = document.querySelector(`#custom-chat-${conversationId} .custom-chat-reply button`); if (btn) { btn.disabled = false; btn.textContent = originalButtonText; } }, 2500); } }
                     },
                     onerror: function(error) { console.error(`%cDMM SendError[${conversationId}]: Network error during immediate OpenMessage fetch.`, "color: red", error); sendAttemptError = new Error("Network error during immediate update fetch."); const currentSendButton = document.querySelector(`#custom-chat-${conversationId} .custom-chat-reply button`); if (currentSendButton) { currentSendButton.textContent = 'Erreur Réseau MàJ'; setTimeout(() => { const btn = document.querySelector(`#custom-chat-${conversationId} .custom-chat-reply button`); if (btn) { btn.disabled = false; btn.textContent = originalButtonText; } }, 2500); } },
                     ontimeout: function() { console.warn(`%cDMM Send[${conversationId}]: Timeout during immediate OpenMessage fetch. UI will update later.`, "color: orange"); sendAttemptError = new Error("Timeout during immediate update fetch."); const currentSendButton = document.querySelector(`#custom-chat-${conversationId} .custom-chat-reply button`); if (currentSendButton) { currentSendButton.textContent = 'Timeout MàJ'; setTimeout(() => { const btn = document.querySelector(`#custom-chat-${conversationId} .custom-chat-reply button`); if (btn) { btn.disabled = false; btn.textContent = originalButtonText; } }, 2500); } }
                 });
             } else { setTimeout(() => { const currentSendButton = document.querySelector(`#custom-chat-${conversationId} .custom-chat-reply button`); if (currentSendButton) { currentSendButton.disabled = false; currentSendButton.textContent = originalButtonText; } if (sendAttemptError && !originalClickSuccess) { alert(`Erreur DMM: Échec de l'envoi initial du message.\n${sendAttemptError.message}`); } }, 1500); }
         };

         textarea.addEventListener('keypress', function(e) { if (e.key === 'Enter' && !e.shiftKey) { e.preventDefault(); sendButton.click(); } });

         // --- Other UI Handlers (Popups, Theme, Participants, Options, Resize, Drag) ---
         clickOutsideColorPickerHandler = (event) => { if (!colorPickerPanel.contains(event.target) && !themeBtn.contains(event.target)) { closeOtherPopups('none'); } };
         themeBtn.addEventListener('click', (event) => { event.stopPropagation(); const isDisplayed = colorPickerPanel.style.display === 'block'; closeOtherPopups(isDisplayed ? 'none' : 'color'); colorInput.value = getSavedGlobalThemeColor(); colorPickerPanel.style.display = isDisplayed ? 'none' : 'block'; if (!isDisplayed) { setTimeout(() => { document.addEventListener('click', clickOutsideColorPickerHandler, true); }, 0); } else { if (clickOutsideColorPickerHandler) { document.removeEventListener('click', clickOutsideColorPickerHandler, true); clickOutsideColorPickerHandler = null; } } });
         colorInput.addEventListener('input', (event) => { saveGlobalThemeColor(event.target.value); });
         resetColorBtn.addEventListener('click', () => {
             colorInput.value = DEFAULT_THEME_COLOR;
             saveGlobalThemeColor(DEFAULT_THEME_COLOR);
         });

         clickOutsideMenuHandler = (event) => { if (!moreOptionsMenu.contains(event.target) && !moreOptsBtn.contains(event.target)) { closeOtherPopups('none'); } };

         moreOptsBtn.addEventListener('click', (event) => {
            event.stopPropagation();
            const isDisplayed = moreOptionsMenu.style.display === 'block';
            closeOtherPopups(isDisplayed ? 'none' : 'menu');
            if (!isDisplayed) {
                // Update BOTH settings and mute UI when menu opens
                populateConversationSettingsUI(conversationId, specificColorCheckbox, specificColorInput);
                updateMuteOptionsUI(chatWindow, conversationId); // Pass chatWindow reference - THIS NOW UPDATES TIMER TOO
            }
            moreOptionsMenu.style.display = isDisplayed ? 'none' : 'block';
            if (!isDisplayed) {
                setTimeout(() => { document.addEventListener('click', clickOutsideMenuHandler, true); }, 0);
            } else {
                if (clickOutsideMenuHandler) {
                    document.removeEventListener('click', clickOutsideMenuHandler, true);
                    clickOutsideMenuHandler = null;
                }
            }
         });

         moreOptionsMenu.addEventListener('click', (event) => { // Handle menu item clicks
             const menuItem = event.target.closest('.menu-item:not(.convo-settings-item):not(.mute-option-item)'); // Exclude settings & mute items
             const settingsItem = event.target.closest('.convo-settings-item');
             const muteOptionItem = event.target.closest('.mute-option-item'); // Get mute item

             if (menuItem) { // Handle standard actions (invite, delete, etc.)
                 const action = menuItem.dataset.action;
                 closeOtherPopups('none');
                 try {
                     const cData = ACTIVE_CONVERSATIONS[conversationId];
                     const currentOriginalWindow = cData?.originalWindow;
                     const messagerie = unsafeWindow?.nav?.getMessagerie();
                     if (!messagerie && (action === 'mark_unread' || action === 'delete')) { console.error("DMM Error: unsafeWindow.nav.getMessagerie() is not accessible!"); alert("Erreur: Fonctionnalité de messagerie non trouvée."); return; }

                     if (action === 'invite') {
                         if (currentOriginalWindow && document.body.contains(currentOriginalWindow) && typeof unsafeWindow?.$ === 'function') {
                             try {
                                 const originalWindowId = `#${currentOriginalWindow.id}`;
                                 currentOriginalWindow.classList.remove('hidden-original-databox');
                                 currentOriginalWindow.style.opacity = ''; currentOriginalWindow.style.pointerEvents = '';
                                 currentOriginalWindow.style.zIndex = '9999'; currentOriginalWindow.style.top = ''; currentOriginalWindow.style.left = '';
                                 currentOriginalWindow.dataset.modernized = 'revealed_for_invite';
                                 unsafeWindow.$(`${originalWindowId} .contenu`).animate({height: '140px'}, 'fast');
                                 const $zoneReponse = unsafeWindow.$(`${originalWindowId} .zone_reponse`);
                                 $zoneReponse.slideDown('fast');
                                 unsafeWindow.$(`${originalWindowId} .autres_actions`).addClass('small');
                                 $zoneReponse.find('.cible').slideDown('fast');
                                 closeThisChatWindow({ removeOriginal: false });
                                 setTimeout(() => { const targetTextarea = currentOriginalWindow.querySelector('.zone_reponse textarea[name="nm_texte"]'); if(targetTextarea) targetTextarea.focus(); }, 400);
                             } catch (e) { console.error(`DMM: Error executing Invite action jQuery...`, e); alert("Erreur lors de la préparation de l'invitation."); closeThisChatWindow({ removeOriginal: true }); }
                         } else { console.error("DMM Error: Cannot perform Invite - original window ref missing or jQuery not available."); alert("Erreur: Impossible d'exécuter l'action 'Inviter'."); closeThisChatWindow({ removeOriginal: true }); }
                     } else if (action === 'mark_unread') {
                         messagerie.notReadMessage(conversationId);
                         setTimeout(() => closeThisChatWindow({ removeOriginal: true }), 100);
                     } else if (action === 'delete') {
                         messagerie.deleteMessage(conversationId);
                         setTimeout(() => closeThisChatWindow({ removeOriginal: true }), 100);
                     }
                 } catch (e) { console.error(`DMM Error executing action '${action}'...`, e); alert(`Une erreur est survenue lors de l'action ${action}`); }

             } else if (muteOptionItem) { // Handle Mute Option Click
                 const durationStr = muteOptionItem.dataset.duration;
                 let durationMs;
                 if (durationStr === 'null') durationMs = null;
                 else durationMs = parseInt(durationStr, 10);

                 if (typeof durationMs === 'number' || durationMs === null) {
                    // Don't allow clicking "Unmute" if already unmuted
                    const currentEndTime = getConversationMuteEndTime(conversationId);
                    if (durationMs === MUTE_DURATIONS.UNMUTE && currentEndTime === 0) {
                       // Already unmuted, do nothing
                    } else {
                       setConversationMuted(conversationId, durationMs); // This now handles all UI updates (window+sidebar)
                       // closeOtherPopups('none'); // Optionally close menu
                    }
                 } else {
                    console.warn("DMM: Invalid duration found on mute option item:", durationStr);
                 }

             } else if (settingsItem) { // Handle Color Settings Click
                 // Check if the click was directly on an input or its label
                 if (event.target.tagName === 'INPUT' && (event.target.type === 'checkbox' || event.target.type === 'color')) {
                     // Let the specific input's event listener handle it
                 } else if (event.target.tagName === 'LABEL') {
                     const inputId = event.target.htmlFor;
                     const inputElement = document.getElementById(inputId);
                     if (inputElement && inputElement.type === 'checkbox') {
                         inputElement.click();
                     }
                 }
             }
         });

         specificColorCheckbox.addEventListener('change', (event) => { const isEnabled = event.target.checked; const currentColor = specificColorInput.value; specificColorInput.disabled = !isEnabled; setConversationSetting(conversationId, { enabled: isEnabled, color: currentColor }); applyCurrentTheme(chatWindow, conversationId); });
         specificColorInput.addEventListener('input', (event) => { const newColor = event.target.value; if (!specificColorInput.disabled) { setConversationSetting(conversationId, { enabled: true, color: newColor }); applyCurrentTheme(chatWindow, conversationId); } });

         clickOutsidePanelHandler = (event) => { if (!participantsPanel.contains(event.target) && !participantsBtn.contains(event.target)) { closeOtherPopups('none'); } };
         participantsBtn.addEventListener('click', (event) => { event.stopPropagation(); const cData = ACTIVE_CONVERSATIONS[conversationId]; if (!cData) return; const isActive = participantsPanel.classList.contains('active'); closeOtherPopups(isActive ? 'none' : 'panel'); const listHtml = cData.participants.length > 0 ? cData.participants.join('<br>') : '<p style="color:#888;font-style:italic;">Aucun participant trouvé.</p>'; participantsListDiv.innerHTML = listHtml; participantsPanel.classList.toggle('active'); if (!isActive) { setTimeout(() => { document.addEventListener('click', clickOutsidePanelHandler, true); }, 0); } else { if (clickOutsidePanelHandler) { document.removeEventListener('click', clickOutsidePanelHandler, true); clickOutsidePanelHandler = null; } } });
         closePanelBtn.addEventListener('click', () => { closeOtherPopups('none'); });
         head.addEventListener('dblclick', (e) => { if (e.target.closest('.controls span') || e.target.closest('.participants-panel') || e.target.closest('.color-picker-panel') || e.target.closest('.more-opts-menu') || e.target.classList.contains('resize-handle') || e.target.classList.contains('mute-status-display')) return; const isCollapsed = chatWindow.classList.toggle('collapsed'); if (isCollapsed) { closeOtherPopups('none'); } });

         // --- Add to DOM and make interactive ---
         document.body.appendChild(chatWindow);
         makeDraggable(chatWindow);
         makeResizable(chatWindow, resizeHandle);

         // --- Build initial content ---
         const { latestId, oldestId } = buildInitialChatUI(messages, content, conversationId, allLoaded);

         // --- Setup Mute Timer Interval ---
         const muteTimerIntervalId = setInterval(() => {
             const currentConvData = ACTIVE_CONVERSATIONS[conversationId];
             // Check if window still exists before updating
             if (currentConvData?.customWindow && document.body.contains(currentConvData.customWindow)) {
                 // Update header inside the DMM window
                 updateHeaderMuteStatus(currentConvData.customWindow, conversationId);
                 // Check if mute expired using the main function (which updates sidebar if needed)
                 isConversationMuted(conversationId);
                 // Update menu timer display ONLY IF menu is currently open
                 const currentMenu = currentConvData.customWindow.querySelector('.more-opts-menu');
                 if (currentMenu && currentMenu.style.display === 'block') {
                     updateMuteOptionsUI(currentConvData.customWindow, conversationId);
                 }
             } else {
                 // Window is gone, clear the interval (check existence before clearing)
                 const intervalIdToClear = ACTIVE_CONVERSATIONS[conversationId]?.muteTimerIntervalId;
                 if (intervalIdToClear) {
                     clearInterval(intervalIdToClear);
                     if (ACTIVE_CONVERSATIONS[conversationId]) { // Check again before deleting prop
                         delete ACTIVE_CONVERSATIONS[conversationId].muteTimerIntervalId;
                     }
                     // console.log(`%cDMM Mute Timer: Cleared interval ${intervalIdToClear} for closed/missing window ${conversationId}`, "color: gray");
                 }
             }
         }, 20000); // Update every 20 seconds

         // --- Store conversation data ---
         ACTIVE_CONVERSATIONS[conversationId] = {
             customWindow: chatWindow,
             originalWindow: originalWindowRef,
             latestMessageId: latestId ?? initialLatestId, // message_id
             oldestMessageId: oldestId ?? initialOldestId, // message_id
             allMessagesLoaded: allLoaded,
             isLoadingOlder: false,
             participants: participants,
             hasUnreadNotification: false,
             muteTimerIntervalId: muteTimerIntervalId // Store the interval ID
         };

         // --- Initial Mute State UI Update ---
         updateHeaderMuteStatus(chatWindow, conversationId);
         updateMuteOptionsUI(chatWindow, conversationId); // Initial checkmark/timer update
         // updateSidebarMuteStatus(conversationId); // No need to call here, scanAndUpdateSidebarMutes runs on init/update

         // --- Final focus ---
         setTimeout(() => textarea.focus(), 200);

     } // --- END of createCustomWindow function ---


    // --- Click Simulation Functions ---
    function simulateClick(element) {
        return new Promise(resolve => {
            if (!element || !document.body.contains(element)) {
                console.warn("DMM simulateClick (.click()): Null or detached element"); resolve(false); return;
            }
            try { element.click(); resolve(true); }
            catch (e) { console.error(`DMM simulateClick (.click()): Error calling .click() on`, element, e); resolve(false); }
        });
    }
    async function initiateDoubleClick(selector, container = document) {
        const logPrefix = `DMM initiateDoubleClick (.click() x2) (${selector}):`;
        let element = null;
        try {
            element = container.querySelector(selector);
            if (!element || !document.body.contains(element)) { console.warn(`${logPrefix} Initial element not found or not in document.`); return false; }
            element.click(); // First click
            await new Promise(r => setTimeout(r, REFIND_DELAY));
            element = null; // Reset before re-find
            element = container.querySelector(selector); // RE-FIND ELEMENT
            if (!element || !document.body.contains(element)) { console.warn(`${logPrefix} Element could not be re-found after delay.`); return false; }
            element.click(); // Second click
            // console.log(`%c${logPrefix} Double .click() sequence completed.`, "color: green");
            return true;
        } catch (error) { console.error(`${logPrefix} Error during double .click() simulation:`, error); return false; }
    }


    // --- Core Logic Handlers ---

    async function handleNewMessageEvent(conversationId, folderId) {
        const MAX_ATTEMPTS = 5;
        const RETRY_DELAY = 100;
        const logPrefix = `DMM /Check Sim Handler [${conversationId}/${folderId}]:`;
        // const conversationData = ACTIVE_CONVERSATIONS[conversationId]; // Keep for potential future use, but check isn't needed here anymore
        let menuWasOpenedByScriptOnSuccessfulAttempt = false;
        let overallSuccess = false;

        for (let attempt = 1; attempt <= MAX_ATTEMPTS; attempt++) {
            // console.log(`%c${logPrefix} Attempt ${attempt}/${MAX_ATTEMPTS}...`, "color: #4682B4; font-weight: bold;");
            let currentAttemptMenuOpened = false;

            try {
                // --- Step 1: Ensure Main Message Menu is Visible ---
                const messageListContainer = document.getElementById('liste_messages');
                const mainMenuButton = document.getElementById('display_messagerie');
                const isListVisibleCheck = () => messageListContainer && document.body.contains(messageListContainer) && messageListContainer.offsetParent !== null && getComputedStyle(messageListContainer).visibility !== 'hidden' && getComputedStyle(messageListContainer).display !== 'none';

                if (!isListVisibleCheck()) {
                    if (!mainMenuButton) {
                        console.error(`${logPrefix} Attempt ${attempt}: Message list not visible and #display_messagerie not found! Aborting attempts.`);
                        return;
                    }
                    // console.log(`%c${logPrefix} Attempt ${attempt}: Main message list not visible. Clicking #display_messagerie...`, "color: #4682B4");
                    currentAttemptMenuOpened = true;
                    await new Promise(r => setTimeout(r, UI_CLICK_DELAY));
                    const click1Success = await simulateClick(mainMenuButton);
                    if (!click1Success) {
                        console.warn(`${logPrefix} Attempt ${attempt}: Failed to simulate click on #display_messagerie. Retrying...`);
                        await new Promise(r => setTimeout(r, RETRY_DELAY));
                        continue;
                    }
                    await new Promise(r => setTimeout(r, UI_WAIT_DELAY));
                    try {
                        await waitForElement('#liste_messages');
                        // console.log(`%c${logPrefix} Attempt ${attempt}: Main message list should now be visible.`, "color: #4682B4");
                    } catch (waitError) {
                        console.warn(`${logPrefix} Attempt ${attempt}: Main message list (#liste_messages) did not become visible after click. Retrying...`, waitError?.message || waitError);
                        await new Promise(r => setTimeout(r, RETRY_DELAY));
                        continue;
                    }
                }

                // --- Step 2: Ensure Correct Folder List is Visible ---
                const folderListULSelector = '#liste_messages ul#folder_list';
                let folderListUL = document.querySelector(folderListULSelector);
                const isFolderListVisibleCheck = () => folderListUL && folderListUL.offsetParent !== null && getComputedStyle(folderListUL).display !== 'none';
                if (!isFolderListVisibleCheck() && folderListUL) {
                     folderListUL.style.display = 'block'; // Force visible if needed
                     await new Promise(r => setTimeout(r, UI_WAIT_DELAY / 2));
                } else if (!folderListUL) {
                     console.error(`${logPrefix} Attempt ${attempt}: Folder list UL element ('${folderListULSelector}') not found! Retrying...`);
                     await new Promise(r => setTimeout(r, RETRY_DELAY));
                     continue;
                 }

                // --- Step 3: Click Target Folder LI ---
                folderListUL = document.querySelector(folderListULSelector); // Re-select
                const targetFolderLiSelector = `li#folder_${folderId}`;
                if (!folderListUL || !document.body.contains(folderListUL)) {
                    console.warn(`${logPrefix} Attempt ${attempt}: Cannot find folder list UL ('${folderListULSelector}') or it's detached before clicking folder LI. Retrying...`);
                    await new Promise(r => setTimeout(r, RETRY_DELAY));
                    continue;
                }

                let targetFolderLi = null;
                try {
                    targetFolderLi = await waitForElement(targetFolderLiSelector, WAIT_FOR_ELEMENT_TIMEOUT, folderListUL);
                } catch (findError) {
                    console.warn(`${logPrefix} Attempt ${attempt}: Failed to find target folder LI '${targetFolderLiSelector}'. Retrying...`, findError?.message || findError);
                    await new Promise(r => setTimeout(r, RETRY_DELAY));
                    continue;
                }

                // Click the folder ONLY if it's not already the active one
                const currentFolderSpan = document.querySelector('#current_folder');
                const currentFolderId = currentFolderSpan?.dataset?.id;
                let folderClicked = false;
                if(currentFolderId !== folderId) {
                    // console.log(`%c${logPrefix} Attempt ${attempt}: Found folder LI ${folderId}. Clicking...`, "color: #4682B4");
                    await new Promise(r => setTimeout(r, UI_CLICK_DELAY));
                    const click3Success = await simulateClick(targetFolderLi);
                    if(!click3Success) {
                         console.warn(`${logPrefix} Attempt ${attempt}: Failed to simulate click on target folder LI ${folderId}. Retrying...`);
                         await new Promise(r => setTimeout(r, RETRY_DELAY));
                         continue;
                    }
                    folderClicked = true;
                    // Wait longer if we clicked the folder, as it triggers an XHR load
                    await new Promise(r => setTimeout(r, UI_WAIT_DELAY * 1.5)); // Increased wait
                } // else { console.log(`%c${logPrefix} Attempt ${attempt}: Target folder ${folderId} already selected.`, "color: #4682B4"); }

                // --- Step 4: Find and Double-Click the Message LI ---
                // Target the specific message LI within the main list container
                const messageListContentUL = document.querySelector('#liste_messages .content ul');
                if (!messageListContentUL || !document.body.contains(messageListContentUL)) {
                    console.warn(`${logPrefix} Attempt ${attempt}: Cannot find #liste_messages .content ul container before message LI click. Retrying...`);
                    await new Promise(r => setTimeout(r, RETRY_DELAY));
                    continue;
                }
                const targetMessageSelector = `li#message_${conversationId}`;
                // console.log(`%c${logPrefix} Attempt ${attempt}: Waiting for message LI '${targetMessageSelector}' within .content ul...`, "color: #4682B4");

                let targetMessageLi = null;
                try {
                    // Wait longer if the folder was just clicked
                    targetMessageLi = await waitForElement(targetMessageSelector, WAIT_FOR_ELEMENT_TIMEOUT * (folderClicked ? 3 : 2) , messageListContentUL);
                } catch (findMsgError) {
                    console.warn(`${logPrefix} Attempt ${attempt}: Failed to find target message LI '${targetMessageSelector}' after folder interaction. Retrying...`, findMsgError?.message || findMsgError);
                    await new Promise(r => setTimeout(r, RETRY_DELAY));
                    continue;
                }

                // console.log(`%c${logPrefix} Attempt ${attempt}: Found message LI ${conversationId}. Initiating double-click...`, "color: #008080; font-weight: bold;");
                // Use the messageListContentUL as the container for the double-click simulation
                const success = await initiateDoubleClick(targetMessageSelector, messageListContentUL);

                if (success) {
                    console.log(`%c${logPrefix} Attempt ${attempt} SUCCEEDED. Double-click initiated for ${targetMessageSelector}.`, "color: green; font-weight: bold;");
                    overallSuccess = true;
                    menuWasOpenedByScriptOnSuccessfulAttempt = currentAttemptMenuOpened;
                    break; // Exit the retry loop
                } else {
                    console.warn(`${logPrefix} Attempt ${attempt}: Double-click simulation FAILED for ${targetMessageSelector}. Retrying...`);
                    await new Promise(r => setTimeout(r, RETRY_DELAY));
                    continue;
                }

            } catch (error) {
                console.error(`${logPrefix} Attempt ${attempt}: Error during UI simulation steps. Retrying...`, error);
                await new Promise(r => setTimeout(r, RETRY_DELAY));
                continue;
            }
        } // --- END of for loop (attempts) ---

        if (!overallSuccess) {
             console.error(`${logPrefix} All ${MAX_ATTEMPTS} attempts failed to complete the UI simulation.`);
        }

        // --- Auto-close Menu ---
        if (overallSuccess && menuWasOpenedByScriptOnSuccessfulAttempt) {
            // console.log(`%c${logPrefix} FINALLY: Successful attempt opened the menu. Waiting briefly before attempting to close...`, "color: #4682B4");
            await new Promise(r => setTimeout(r, 150)); // Short delay

            const finalMenuButton = document.getElementById('display_messagerie');
            const finalList = document.getElementById('liste_messages');
            const finalIsListVisibleCheck = () => finalList && document.body.contains(finalList) && finalList.offsetParent !== null && getComputedStyle(finalList).visibility !== 'hidden' && getComputedStyle(finalList).display !== 'none';

            if (finalMenuButton && finalIsListVisibleCheck()) {
                 // console.log(`%c${logPrefix} FINALLY: List is still visible, attempting close click.`, "color: #4682B4");
                 await simulateClick(finalMenuButton);
                 // console.log(`%c${logPrefix} FINALLY: Clicked #display_messagerie to close menu.`, "color: #4682B4");
            } // else: Menu already closed or button missing
        }
        // console.log(`%c${logPrefix} Processing finished. Overall Success: ${overallSuccess}`, "color: #4682B4; font-weight: bold;");

    } // --- END of handleNewMessageEvent ---


    function handleOpenMessageResponse(conversationId, responseText) {
        const conversationData = ACTIVE_CONVERSATIONS[conversationId];
        const isConvoMuted = isConversationMuted(conversationId); // Check conversation-specific mute status

        // Check if window exists OR if it's a user override scenario (where window *should* exist soon)
        const dmmWindowExists = conversationData && conversationData.customWindow && document.body.contains(conversationData.customWindow);
        const isUserOverride = openingMutedOverride === conversationId; // Check if this ID is being overridden

        // If conversation muted AND the DMM window doesn't exist AND it's NOT a user override, suppress the update.
        if (isConvoMuted && !dmmWindowExists && !isUserOverride) {
            // console.log(`%cDMM OpenMessage Handler: Suppressing update for MUTED conversation ${conversationId} (no window, no override).`, "color: gray;");
            return;
        }

        // If window doesn't exist and it's *not* a user override case waiting for the window, abort.
        if (!dmmWindowExists && !isUserOverride) {
            // console.log(`%cDMM OpenMessage Handler: DMM window for ${conversationId} not active/attached (and not a pending override). Aborting UI update.`, "color: gray");
            return;
        }
        // At this point, either the window exists, or we expect it to exist shortly due to user override.

        const customContentArea = conversationData?.customWindow?.querySelector('.custom-chat-content');
        // If the window doesn't exist *yet* due to override, customContentArea will be null. This is handled below.
        if (!isUserOverride && !customContentArea) {
            console.warn(`%cDMM OpenMessage Handler[${conversationId}]: Content area not found for UI update (window exists but content area missing?).`, "color: red");
            return;
        }

        const currentLatestKnownId = conversationData?.latestMessageId; // This is message_id

        try {
            const parser = new DOMParser();
            const doc = parser.parseFromString(responseText, 'text/html');
            const latestConvList = doc.querySelector('.zone_conversation');
            if (!latestConvList) { console.warn(`%cDMM OpenMessage Handler[${conversationId}]: Could not find .zone_conversation in intercepted response. Cannot update messages.`, "color: orange"); return; }

            // Parse elements with 'convers_' ID from the response
            const serverElements = Array.from(latestConvList.querySelectorAll('.link.conversation[id^="convers_"]'));
            if (serverElements.length === 0) { /*console.log(`%cDMM OpenMessage Handler[${conversationId}]: No message elements found in response.`, "color: gray");*/ return; }

            let elementsToProcess = [];
            let highestServerId = null; // Highest message_id from server
            let highestServerIdNum = 0;

            serverElements.forEach(el => {
                const parsed = parseMessageElement(el); // Get { id, timestamp, sender } where id is message_id
                if (parsed) {
                    const elIdNum = parseInt(parsed.id);
                    if (!highestServerId || elIdNum > highestServerIdNum) { highestServerId = parsed.id; highestServerIdNum = elIdNum; }

                    // Check against existing content area *only if it exists*
                    const alreadyExists = customContentArea ? customContentArea.querySelector(`.chat-bubble[data-message-id="${parsed.id}"]`) : false;
                    // Compare message_id numbers
                    const isNewer = !currentLatestKnownId || elIdNum > parseInt(currentLatestKnownId);

                    if (!alreadyExists && isNewer) { elementsToProcess.push(el); } // Store the element to fetch content later
                }
            });

            // console.log(`%cDMM OpenMessage Handler[${conversationId}]: Server highest MsgID: ${highestServerId}. Client latest MsgID: ${currentLatestKnownId ?? 'None'}. Found ${elementsToProcess.length} potential new message(s) to add. Muted: ${isConvoMuted}, Override Pending: ${isUserOverride}`, "color: blue");

            if (elementsToProcess.length > 0) {
                elementsToProcess.reverse(); // Process oldest new message first

                let newlyProcessedRealIds = []; // Store message_ids added
                let fetchPromises = elementsToProcess.map(element => {
                    return new Promise(async (resolve) => {
                        const parsed = parseMessageElement(element); // Parse again to get message_id etc.
                        if (parsed) {
                            // Wait briefly if it's an override, allowing createCustomWindow to potentially finish first
                            if (isUserOverride) await new Promise(r => setTimeout(r, 50));

                            // Re-check DMM window/content area status right before fetching content
                            const finalConvDataCheck = ACTIVE_CONVERSATIONS[conversationId];
                            const finalContentAreaCheck = finalConvDataCheck?.customWindow?.querySelector('.custom-chat-content');

                            // If window/content area still doesn't exist (even after potential override delay), skip adding bubble
                            if (!finalConvDataCheck || !finalConvDataCheck.customWindow || !document.body.contains(finalConvDataCheck.customWindow) || !finalContentAreaCheck) {
                                // console.log(`%cDMM OpenMessage Handler [${conversationId}]: Window/Content disappeared before fetching msg ${parsed.id}. Aborting add.`, "color: orange");
                                resolve(); return;
                            }
                            // Final duplicate check within the confirmed content area using message_id
                            if (finalContentAreaCheck.querySelector(`.chat-bubble[data-message-id="${parsed.id}"]`)) {
                                // console.log(`%cDMM OpenMessage Handler [${conversationId}]: Duplicate msg ${parsed.id} detected before addBubble. Skipping.`, "color: gray");
                                resolve(); return;
                            }

                            fetchMessageContent(parsed.id, conversationId, (content) => { // Use message_id to fetch
                                // Check window status *again* after async fetch returns
                                const finalConvData = ACTIVE_CONVERSATIONS[conversationId];
                                if (!finalConvData || !finalConvData.customWindow || !document.body.contains(finalConvData.customWindow)) { resolve(); return; }
                                const finalContentArea = finalConvData.customWindow.querySelector('.custom-chat-content');
                                if (!finalContentArea) { resolve(); return; }
                                // Check duplicate again *after* fetch, *before* adding
                                if (finalContentArea.querySelector(`.chat-bubble[data-message-id="${parsed.id}"]`)) {
                                     // console.log(`%cDMM OpenMessage Handler [${conversationId}]: Duplicate msg ${parsed.id} detected AFTER fetch. Skipping add.`, "color: gray");
                                     resolve(); return;
                                }

                                const msgData = { ...parsed, content: content };
                                const processedId = addBubble(msgData, finalContentArea, conversationId, false, false); // isInitialLoad=false here; processedId is message_id
                                if (processedId) newlyProcessedRealIds.push(processedId);
                                resolve();
                            });
                        } else { resolve(); }
                    });
                }); // End map

                Promise.all(fetchPromises).then(() => {
                    // Final check after all bubbles *should* have been added
                    const postProcessConvData = ACTIVE_CONVERSATIONS[conversationId];
                    if (!postProcessConvData || !postProcessConvData.customWindow || !document.body.contains(postProcessConvData.customWindow)) { return; }

                    let overallLatestId = postProcessConvData.latestMessageId; // message_id
                    let didUpdateLatest = false;
                    try {
                        newlyProcessedRealIds.forEach(processedId => { // processedId is message_id
                            if (!processedId) return;
                            const processedIdNum = parseInt(processedId);
                            const currentLatestNum = overallLatestId ? parseInt(overallLatestId) : 0;
                            if (processedIdNum > currentLatestNum) { overallLatestId = processedId; didUpdateLatest = true; }
                        });
                        if (didUpdateLatest) {
                            postProcessConvData.latestMessageId = overallLatestId;
                            // console.log(`%cDMM OpenMessage Handler[${conversationId}]: Successfully processed ${newlyProcessedRealIds.length} message(s). Updated latest message ID to ${postProcessConvData.latestMessageId}`, "color: green");
                        }
                    } catch (idUpdateError) { console.error(`%cDMM OpenMessage Handler[${conversationId}]: Error updating latestMessageId after processing!`, "color: red", idUpdateError); }
                }).catch(error => { console.error(`%cDMM OpenMessage Handler[${conversationId}]: Error in Promise.all for new message fetches:`, "color: red", error); });
            } else if (highestServerId && currentLatestKnownId && parseInt(highestServerId) > parseInt(currentLatestKnownId)) {
                 // Update latest ID even if no new bubbles were added (they might have been added by another means or filtered)
                 const convDataForIdUpdate = ACTIVE_CONVERSATIONS[conversationId];
                 if (convDataForIdUpdate) { // Ensure data still exists
                    // console.log(`%cDMM OpenMessage Handler[${conversationId}]: Server latest message ID ${highestServerId} > Client ${currentLatestKnownId}, but no new elements added. Updating client latest message ID.`, "color: blue");
                    convDataForIdUpdate.latestMessageId = highestServerId;
                 }
             }
        } catch (e) {
            console.error(`%cDMM OpenMessage Handler[${conversationId}]: General error processing intercepted response:`, "color: red", e);
        }
    } // --- END of handleOpenMessageResponse ---


    // --- Click Handling on Sidebar ---
    function handleMessageListClick(event) {
        if (!event.isTrusted) return; // Ignore simulated clicks

        const messageLi = event.target.closest('li.message[id^="message_"]');
        if (!messageLi) return; // Click wasn't on a message LI element

        const conversationId = messageLi.id.replace('message_', '');

        // Mute Handling Logic
        const isMuted = isConversationMuted(conversationId);
        if (isMuted) {
            console.log(`%cDMM ClickIntercept: User click detected on sidebar for MUTED convo ${conversationId}. OVERRIDING mute for this open.`, "color: #8A2BE2;"); // Purple

            // Set the override flag
            openingMutedOverride = conversationId;
            // Clear previous timer if any
            if (openingMutedOverrideTimer) clearTimeout(openingMutedOverrideTimer);
            // Set a timer to clear the flag shortly after, in case observer is slow or DC action fails
            openingMutedOverrideTimer = setTimeout(() => {
                if (openingMutedOverride === conversationId) { // Ensure it wasn't changed by another click
                    // console.log(`%cDMM ClickIntercept: Clearing mute override flag for ${conversationId} after timeout.`, "color: gray;");
                    openingMutedOverride = null;
                }
                openingMutedOverrideTimer = null;
            }, 500); // 500ms should be enough for DC to add the window and observer to react

            // *** DO NOT preventDefault() or stopPropagation() here! ***
            // Let the original Dreadcast click handler proceed to open the db_message window.
            // The mainObserverCallback will handle the override.
            return; // Stop further processing *within this DMM handler*
        }
        // End Mute Handling


        // --- If NOT muted, proceed with existing logic ---
        const customWindowId = `custom-chat-${conversationId}`;
        const existingData = ACTIVE_CONVERSATIONS[conversationId];
        const customWindowElement = document.getElementById(customWindowId);

        if (existingData && customWindowElement && existingData.customWindow === customWindowElement && document.body.contains(customWindowElement)) {
            // console.log(`%cDMM ClickIntercept: User click detected on sidebar for OPEN (and not muted) DMM convo ${conversationId}. DMM PREVENTING default Dreadcast action.`, "color: blue");
            event.preventDefault(); // Stop Dreadcast from opening its own window
            event.stopPropagation(); // Stop event from bubbling further

            bringWindowToFront(customWindowElement); // Use new function to bring window to front
            if (customWindowElement.classList.contains('collapsed')) { customWindowElement.classList.remove('collapsed'); } // Uncollapse
            const textarea = customWindowElement.querySelector('.custom-chat-reply textarea');
            if (textarea) setTimeout(() => textarea.focus(), 50); // Focus after a tiny delay
            return; // Stop further processing by this handler
        }

        // If an original window was previously revealed for 'invite' and is still in the DOM...
        const revealedOriginal = document.querySelector(`#db_message_${conversationId}[data-modernized="revealed_for_invite"]`);
        if (revealedOriginal && document.body.contains(revealedOriginal)) {
            // console.log(`DMM ClickIntercept: User click on message_${conversationId} while original was revealed. Hiding original before allowing default action.`);
            revealedOriginal.classList.add('hidden-original-databox'); // Re-hide the original
            revealedOriginal.dataset.modernized = ''; // Clear the state
        } // else: No DMM window open, or original not revealed. Allow default Dreadcast action.
    } // --- END of handleMessageListClick ---

    function setupClickListener() {
        const stableParent = document.getElementById('liste_messages');
        if (stableParent) {
            stableParent.removeEventListener('click', handleMessageListClick, true); // Remove first
            stableParent.addEventListener('click', handleMessageListClick, true); // Add listener (capture phase)
            console.log("DMM: Sidebar click listener attached (capture phase).");
        } else {
            console.error("DMM: CRITICAL - #liste_messages not found for click listener. Retrying...");
            setTimeout(setupClickListener, 2000);
        }
    }


    // --- Main Observer Callback (Detects added original windows) ---
    const mainObserverCallback = async (mutationsList) => {
        for (const mutation of mutationsList) {
            if (mutation.type === 'childList') {
                for (const node of mutation.addedNodes) {
                    // Check if the added node is an original Dreadcast message window
                    if (node.nodeType === Node.ELEMENT_NODE && node.id?.startsWith('db_message_')) {
                        const originalWindow = node;
                        const conversationId = originalWindow.id.replace('db_message_', '');

                        // Mute Check Logic
                        const isMuted = isConversationMuted(conversationId);
                        let skipMuteRemoval = false; // Flag to allow modernization even if muted

                        if (isMuted) {
                            // Check if this opening was triggered by user override click
                            if (openingMutedOverride === conversationId) {
                                console.log(`%cDMM MainObserver: Muted window ${conversationId} detected, but user override flag is set. Allowing modernization.`, "color: #8A2BE2;");
                                skipMuteRemoval = true; // Allow modernization
                                openingMutedOverride = null; // Consume the flag
                                if(openingMutedOverrideTimer) clearTimeout(openingMutedOverrideTimer); // Clear timer early
                                openingMutedOverrideTimer = null;
                            } else {
                                // Muted and NOT a user override click (e.g., from /Check simulation)
                                // Check if it hasn't ALREADY been marked/removed to avoid loops
                                if (originalWindow.dataset.modernized !== 'muted_removed') {
                                    console.log(`%cDMM MainObserver: Detected original window ${originalWindow.id} for MUTED conversation (no override). Removing it immediately.`, "color: #DAA520;");
                                    originalWindow.dataset.modernized = 'muted_removed'; // Mark state FIRST
                                    try {
                                        // Add an extra check to ensure it's still in the DOM
                                        if (originalWindow.parentNode) {
                                            originalWindow.remove();
                                        } else {
                                            // console.log(`%cDMM MainObserver: Muted window ${originalWindow.id} was already removed from DOM before explicit removal.`, "color: gray;");
                                        }
                                    } catch (removeError) {
                                        console.warn(`DMM MainObserver: Error removing muted original window ${originalWindow.id}:`, removeError);
                                    }
                                }
                                continue; // <<< IMPORTANT: Stop processing this node further if muted and not overridden
                            }
                        }
                        // End Mute Check Logic


                        // Skip if already handled/marked (unless overridden)
                        if (['processing', 'replaced', 'error', 'revealed_for_invite', 'muted_removed'].includes(originalWindow.dataset.modernized) && !skipMuteRemoval) {
                             // console.log(`DMM MainObserver: Skipping node ${originalWindow.id} with state: ${originalWindow.dataset.modernized}`);
                             continue;
                        }

                        // --- Proceed with modernization if not muted OR if mute was overridden ---
                        const existingDMMData = ACTIVE_CONVERSATIONS[conversationId];
                        const existingDMMWindow = document.getElementById(`custom-chat-${conversationId}`);

                        if (existingDMMData && existingDMMWindow && document.body.contains(existingDMMWindow)) {
                            // Update reference and hide original if DMM window already exists
                            // console.log(`DMM MainObserver: Detected original window ${originalWindow.id} for existing DMM window. Updating reference and hiding original.`);
                            existingDMMData.originalWindow = originalWindow;
                            originalWindow.classList.add('hidden-original-databox');
                            originalWindow.dataset.modernized = 'replaced';
                        } else {
                            // This is a NEW conversation window to modernize
                            originalWindow.dataset.modernized = 'processing';
                            // console.log(`%cDMM MainObserver: Detected new original window ${originalWindow.id} (Muted: ${isMuted}, Overridden: ${skipMuteRemoval}). Modernizing...`, "color: purple");
                            originalWindow.classList.add('hidden-original-databox'); // Hide it

                            if (!MY_NAME) MY_NAME = getMyCharacterName();
                            if (!MY_NAME) {
                                console.error("DMM CRITICAL: Failed to get character name when modernizing window!");
                                alert("Erreur critique DMM: Impossible d'obtenir le nom du personnage. Impossible d'ouvrir la fenêtre de message DMM.");
                                originalWindow.classList.remove('hidden-original-databox');
                                originalWindow.style.opacity = '0.7'; originalWindow.style.border = '2px dashed red'; originalWindow.style.pointerEvents = 'auto';
                                originalWindow.dataset.modernized = 'error';
                                continue; // Stop processing this node
                            }

                            // Fetch initial messages and create the DMM window
                            try {
                                const initialResult = await parseAndFetchInitialMessages(originalWindow, conversationId);
                                if (!initialResult || typeof initialResult !== 'object') { throw new Error(`parseAndFetchInitialMessages returned invalid result for ${conversationId}`); }
                                createCustomWindow(conversationId, null, initialResult, originalWindow);
                                originalWindow.dataset.modernized = 'replaced'; // Mark as replaced *after* successful creation
                                // console.log(`%cDMM MainObserver: Successfully modernized ${originalWindow.id}`, "color: purple");
                            } catch (error) {
                                console.error(`DMM MainObserver: Failed to process and modernize conversation ${conversationId}:`, error);
                                alert(`DMM Erreur: Impossible de charger la conversation ${conversationId}. La fenêtre originale reste visible (avec bordure rouge).`);
                                delete ACTIVE_CONVERSATIONS[conversationId]; // Clean up potentially partial data
                                originalWindow.classList.remove('hidden-original-databox');
                                originalWindow.style.opacity = '0.7'; originalWindow.style.border = '2px dashed red'; originalWindow.style.pointerEvents = 'auto';
                                originalWindow.dataset.modernized = 'error';
                            }
                        }
                    } // Fin if node.id startsWith db_message_
                } // Fin boucle addedNodes
            } // Fin if mutation.type childList
        } // Fin boucle mutationsList
    }; // --- END of mainObserverCallback ---

    // --- Sidebar Observer Callback (Detects changes in message list UL) ---
    const sidebarObserverCallback = (mutationsList) => {
        let listChanged = false;
        let contentChanged = false;

        for (const mutation of mutationsList) {
            // Check for both content UL changes and folder switches
            if (mutation.type === 'childList') {
                // Check added/removed nodes
                const changedNodes = [...mutation.addedNodes, ...mutation.removedNodes];
                for (const node of changedNodes) {
                    if (node.nodeType === Node.ELEMENT_NODE) {
                        // Check for direct message items
                        if (node.matches?.('li.message[id^="message_"]')) {
                            listChanged = true;
                            break;
                        }
                        // Check for content container changes (folder switch)
                        if (node.matches?.('.content')) {
                            contentChanged = true;
                            break;
                        }
                        // Check for UL replacement
                        if (node.tagName === 'UL') {
                            contentChanged = true;
                            break;
                        }
                    }
                }
            }
            if (listChanged || contentChanged) break;
        }

        // Handle the changes
        if (listChanged || contentChanged) {
            // Clear any pending scan
            if (sidebarScanDebounceTimer) {
                clearTimeout(sidebarScanDebounceTimer);
            }

            // Set different delays based on change type
            const delay = contentChanged ? 500 : 300; // Longer delay for folder switches

            sidebarScanDebounceTimer = setTimeout(() => {
                scanAndUpdateSidebarMutes();
                sidebarScanDebounceTimer = null;
            }, delay);
        }
    };

    // --- Script Initialization ---
    console.log(`DMM: Dreadcast Dynamic Messages script v${SCRIPT_VERSION} starting...`);
    addChatStyles();

    async function initializeScript() { // Make async to await element
        const essentialElements = [
             document.body,
             document.getElementById('zone_messagerie'),
             document.getElementById('txt_pseudo'),
             document.getElementById('liste_messages') // Ensure message list exists for listener/observer
        ];

        if (essentialElements.every(el => el)) {
            console.log("DMM: Essential elements found.");
            if (!MY_NAME) MY_NAME = getMyCharacterName();
            if (!MY_NAME) { console.error("DMM: Failed to get character name on init! Aborting."); return; }

            // --- Load Global Mute State --- <<< NEW >>>
            loadGlobalMuteState();

            // --- Create Global Mute Button --- <<< NEW >>>
            createGlobalMuteButton(); // Async, will attach when ready

            // --- Setup XHR Wrapper --- // (Logic for /Check and OpenMessage remains the same)
            if (!unsafeWindow._original_XMLHttpRequest_open && !unsafeWindow._original_XMLHttpRequest_send) {
                console.log("DMM: Applying XMLHttpRequest wrappers for /Check and OpenMessage interception...");
                const origOpen = unsafeWindow.XMLHttpRequest.prototype.open;
                const origSend = unsafeWindow.XMLHttpRequest.prototype.send;
                let requestCounter = 0;

                unsafeWindow.XMLHttpRequest.prototype.open = function(method, url) {
                    this._requestMethod = method; this._requestURL = url; this._requestId = requestCounter++;
                    // console.log(`DMM XHR Open [${this._requestId}]: ${method} ${url}`);
                    return origOpen.apply(this, arguments);
                };

                unsafeWindow.XMLHttpRequest.prototype.send = function() {
                    const xhr = this;
                    const reqId = xhr._requestId; const targetUrl = xhr._requestURL;

                    const dmmReadyStateHandler = function() {
                        const rsUrl = xhr._requestURL; // Use the stored URL
                        if (xhr.readyState === 4) {
                            // console.log(`DMM XHR Done [${reqId}]: State 4 for ${rsUrl}, Status: ${xhr.status}`);
                            const currentStatus = xhr.status; let currentResponseText = null;
                            try { currentResponseText = xhr.responseText; } catch(e) { /* Ignore responseText access errors */ }

                            // --- Handle /Check ---
                            if (rsUrl && typeof rsUrl === 'string' && rsUrl.includes('/Check')) {
                                if (currentStatus === 200 && currentResponseText) {
                                    let match = null;
                                    try {
                                        // Regex to find nouveau_message event
                                        match = currentResponseText.match(/<evenement\s+type="nouveau_message">.*?<folder_(\d+)\s+quantite="\d+"\s+id_conversation="(\d+)"\s*\/?>.*?<\/evenement>/s);
                                    } catch (regexError) { console.error('DMM: Error during /Check regex matching!', regexError); }

                                    if (match && match[1] && match[2]) {
                                        const folderId = match[1];
                                        const conversationId = match[2];
                                        const isConvoMuted = isConversationMuted(conversationId); // Conversation specific mute

                                        // console.log(`%cDMM XHR /Check Match [${reqId}]: nouveau_message! Convo: ${conversationId}, Folder: ${folderId}, Muted: ${isConvoMuted}`, "color: orange");

                                        const conversationData = ACTIVE_CONVERSATIONS[conversationId];
                                        const isWindowOpen = conversationData && conversationData.customWindow && document.body.contains(conversationData.customWindow);

                                        if (isWindowOpen) {
                                            // DMM Window IS OPEN: Always trigger simulation to update content.
                                            // console.log(`%cDMM /Check: Window for ${conversationId} is OPEN. Triggering UI update simulation. (ConvoMuted: ${isConvoMuted}, GlobalMuted: ${isGloballyMuted})`, "color: blue");
                                            try {
                                                setTimeout(() => handleNewMessageEvent(conversationId, folderId), 0);
                                            } catch (e) { console.error(`DMM ERROR: Exception queueing handleNewMessageEvent for OPEN window ${conversationId}`, e); }
                                        } else {
                                            // DMM Window IS CLOSED:
                                            if (isConvoMuted) {
                                                // CONVO MUTED and CLOSED: Trigger simulation to mark as read silently. NO sound.
                                                // console.log(`%cDMM /Check: Window for ${conversationId} is CLOSED & CONVO MUTED. Triggering SILENT UI simulation.`, "color: #DAA520;");
                                                try {
                                                    setTimeout(() => handleNewMessageEvent(conversationId, folderId), 0);
                                                } catch (e) { console.error(`DMM ERROR: Exception queueing handleNewMessageEvent for CONVO MUTED/CLOSED window ${conversationId}`, e); }
                                            } else if (isGloballyMuted) {
                                                // GLOBALLY MUTED and CLOSED: Trigger simulation to mark as read silently. NO sound.
                                                // console.log(`%cDMM /Check: Window for ${conversationId} is CLOSED & GLOBALLY MUTED. Triggering SILENT UI simulation.`, "color: #DAA520;");
                                                try {
                                                    setTimeout(() => handleNewMessageEvent(conversationId, folderId), 0);
                                                } catch (e) { console.error(`DMM ERROR: Exception queueing handleNewMessageEvent for GLOBALLY MUTED/CLOSED window ${conversationId}`, e); }
                                            } else {
                                                // NOT muted (neither convo nor global) and CLOSED: Play "unopened" sound. DO NOT simulate click.
                                                // console.log(`%cDMM /Check: Window for ${conversationId} is CLOSED & NOT muted (convo or global). Playing UNOPENED notification sound.`, "color: #FF8C00");
                                                try {
                                                    const audio = new Audio(UNOPENED_NOTIFICATION_SOUND_URL);
                                                    audio.play().catch(e => { console.warn(`DMM: Unopened notification sound playback failed:`, e.name, e.message); });
                                                } catch (e) { console.error("DMM: Error creating/playing unopened notification sound:", e); }
                                                // No handleNewMessageEvent call here. Let user click.
                                            }
                                        }
                                        // <<< NEW >>> Update sidebar highlighting potentially needed after /Check handles marking read
                                        // Use a small delay to allow potential UI updates from handleNewMessageEvent to settle
                                        setTimeout(() => updateSidebarMuteStatus(conversationId), 150);
                                    } // end if match
                                } // end if status 200
                            } // end if /Check

                            // --- Handle OpenMessage ---
                            else if (rsUrl && typeof rsUrl === 'string' && rsUrl.includes('action=OpenMessage&id_conversation=')) {
                                if (currentStatus === 200 && currentResponseText) {
                                    const conversationIdMatch = rsUrl.match(/id_conversation=(\d+)/);
                                    if (conversationIdMatch && conversationIdMatch[1]) {
                                        const conversationId = conversationIdMatch[1];
                                        // console.log(`%cDMM XHR OpenMessage Resp [${reqId}]: Intercepted successful response for ${conversationId}. Processing...`, "color: #8A2BE2");
                                        try { setTimeout(() => handleOpenMessageResponse(conversationId, currentResponseText), 0); }
                                        catch (e) { console.error(`DMM ERROR: Exception queueing handleOpenMessageResponse for ${conversationId}`, e); }
                                    }
                                } else { /* console.warn(`DMM XHR OpenMessage Resp [${reqId}]: Intercepted non-200 status: ${currentStatus} for ${rsUrl}`); */ }
                            }

                             try { xhr.removeEventListener('readystatechange', dmmReadyStateHandler); } catch(removeError) { /* ignore */ }
                        } // end if readyState 4
                    }; // --- END of dmmReadyStateHandler ---

                    try { xhr.addEventListener('readystatechange', dmmReadyStateHandler); }
                    catch(addListenerError) { console.error(`DMM: FAILED to add readystatechange listener for ${targetUrl}!`, addListenerError); }

                    // Ensure originals are stored correctly if multiple XHRs happen quickly
                    if(!unsafeWindow._original_XMLHttpRequest_open) unsafeWindow._original_XMLHttpRequest_open = origOpen;
                    if(!unsafeWindow._original_XMLHttpRequest_send) unsafeWindow._original_XMLHttpRequest_send = origSend;

                    return origSend.apply(this, arguments);
                }; // --- END of send override ---
                console.log("DMM: XHR wrappers applied.");
            } else {
                console.log("DMM: XHR wrappers appear to be already applied. Skipping re-application.");
            }
            // --- End XHR Wrapper Setup ---

            // Initialize Main Observer
            if (!mainObserver) {
                mainObserver = new MutationObserver(mainObserverCallback);
                mainObserver.observe(document.body, { childList: true, subtree: true });
                console.log("DMM: Main observer initialized.");
            }

            // Initialize Sidebar Observer (modified to be more thorough)
            if (!sidebarObserver) {
                // Try to observe the entire message list container for better coverage
                const messageList = document.getElementById('liste_messages');
                if (messageList) {
                    sidebarObserver = new MutationObserver(sidebarObserverCallback);
                    sidebarObserver.observe(messageList, {
                        childList: true,
                        subtree: true,
                        attributes: false,
                        characterData: false
                    });
                    console.log("DMM: Enhanced sidebar observer initialized.");

                    // Initial scan
                    scanAndUpdateSidebarMutes();
                } else {
                    console.error("DMM: Could not find #liste_messages to observe sidebar changes!");
                }
            }

            // Setup Click Listener for the sidebar
            setupClickListener();

            // Initial scan of sidebar items for mute status
            scanAndUpdateSidebarMutes();

            console.log("DMM: Initialization complete.");
        } else {
            console.log("DMM: Waiting for essential elements... Retrying init.");
            const missing = essentialElements.map((el, i) => el ? '' : ['body', '#zone_messagerie', '#txt_pseudo', '#liste_messages'][i]).filter(Boolean);
            console.log("DMM: Missing elements:", missing.join(', '));
            setTimeout(initializeScript, 500); // Retry
        }
    } // --- END of initializeScript ---


    // --- Start Initialization ---
    if (document.readyState === 'loading') {
        window.addEventListener('DOMContentLoaded', initializeScript);
    } else {
        initializeScript(); // DOM is already ready
    }


    // --- Cleanup on page unload ---
     window.addEventListener('beforeunload', () => {
         console.log("DMM: Unloading script and cleaning up...");
         if (mainObserver) mainObserver.disconnect(); mainObserver = null;
         if (sidebarObserver) sidebarObserver.disconnect(); sidebarObserver = null;
         if (sidebarScanDebounceTimer) clearTimeout(sidebarScanDebounceTimer); sidebarScanDebounceTimer = null;
         if (openingMutedOverrideTimer) clearTimeout(openingMutedOverrideTimer); openingMutedOverrideTimer = null;

         // Clear all mute timers BEFORE deleting conversation data
         Object.keys(ACTIVE_CONVERSATIONS).forEach(convId => {
            const cData = ACTIVE_CONVERSATIONS[convId];
            if(cData?.muteTimerIntervalId) {
                clearInterval(cData.muteTimerIntervalId);
            }
         });

         // Now close windows and delete data
         Object.keys(ACTIVE_CONVERSATIONS).forEach(convId => {
             try { closeChatWindow(convId, { removeOriginal: true }); }
             catch(e) { console.warn("DMM: Error during unload window cleanup for convId:", convId, e); }
         });
         // Explicitly clear the object just in case closeChatWindow had issues
         for (let key in ACTIVE_CONVERSATIONS) { delete ACTIVE_CONVERSATIONS[key]; }


         const listenerTarget = document.getElementById('liste_messages');
         if (listenerTarget) { try { listenerTarget.removeEventListener('click', handleMessageListClick, true); } catch(e){} }

         // <<< NEW >>> Remove global mute button listener if needed (though often not strictly necessary on unload)
         const globalMuteButton = document.getElementById(GLOBAL_MUTE_BUTTON_ID);
         // Basic check: if it still exists, remove it (or its listener)
         if(globalMuteButton && globalMuteButton.parentNode) {
            try { globalMuteButton.remove(); } catch(e) {}
         }

         try {
              const win = unsafeWindow;
              if (win._original_XMLHttpRequest_open) { win.XMLHttpRequest.prototype.open = win._original_XMLHttpRequest_open; delete win._original_XMLHttpRequest_open; }
              if (win._original_XMLHttpRequest_send) { win.XMLHttpRequest.prototype.send = win._original_XMLHttpRequest_send; delete win._original_XMLHttpRequest_send; }
         } catch (e) { console.error("DMM: Error restoring original XMLHttpRequest methods:", e); }

         console.log("DMM: Cleanup complete.");
     });

})();