QOLBox

Fullscreen hitbox.io, reserve spots for full lobbies, tab indicator when your game starts, Esc chat cancel, persistent audio controls, and a first-start setup menu for choosing QOLBox features.

スクリプトをインストールするには、Tampermonkey, GreasemonkeyViolentmonkey のような拡張機能のインストールが必要です。

You will need to install an extension such as Tampermonkey to install this script.

スクリプトをインストールするには、TampermonkeyViolentmonkey のような拡張機能のインストールが必要です。

スクリプトをインストールするには、TampermonkeyUserscripts のような拡張機能のインストールが必要です。

このスクリプトをインストールするには、Tampermonkeyなどの拡張機能をインストールする必要があります。

このスクリプトをインストールするには、ユーザースクリプト管理ツールの拡張機能をインストールする必要があります。

(ユーザースクリプト管理ツールは設定済みなのでインストール!)

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このスタイルをインストールするには、Stylusなどの拡張機能をインストールする必要があります。

このスタイルをインストールするには、Stylus などの拡張機能をインストールする必要があります。

このスタイルをインストールするには、Stylus tなどの拡張機能をインストールする必要があります。

このスタイルをインストールするには、ユーザースタイル管理用の拡張機能をインストールする必要があります。

このスタイルをインストールするには、ユーザースタイル管理用の拡張機能をインストールする必要があります。

このスタイルをインストールするには、ユーザースタイル管理用の拡張機能をインストールする必要があります。

(ユーザースタイル管理ツールは設定済みなのでインストール!)

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このスクリプトの質問や評価の投稿はこちら通報はこちらへお寄せください
// ==UserScript==
// @name         QOLBox
// @namespace    Violentmonkey Scripts
// @author       gpt-5.4 and gpt-5.5
// @version      1.5.1
// @description  Fullscreen hitbox.io, reserve spots for full lobbies, tab indicator when your game starts, Esc chat cancel, persistent audio controls, and a first-start setup menu for choosing QOLBox features.
// @license      ISC
// @match        https://hitbox.io/
// @match        https://www.hitbox.io/
// @match        https://hitbox.io/game2.html*
// @match        https://www.hitbox.io/game2.html*
// @run-at       document-start
// @inject-into  page
// @grant        none
// ==/UserScript==

(function () {
  'use strict';

  const GAME_VOLUME_KEY = 'vm.hitbox.volumePercent';
  const JUKEBOX_STATE_KEY = 'vm.hitbox.jukeboxState';
  const FEATURE_SETTINGS_KEY = 'vm.hitbox.qolboxFeatures';
  const ONBOARDING_COMPLETE_KEY = 'vm.hitbox.qolboxOnboardingComplete';

  const STEP_PERCENT = 5;
  const KEYBOARD_PAGE_STEP_MULTIPLIER = 4;
  const DEFAULT_GAME_PERCENT = 100;
  const DEFAULT_JUKEBOX_PERCENT = 50;
  const DESKTOP_LOBBY_CHAT_PROMPT = 'Press enter to send a message';
  const TOUCH_LOBBY_CHAT_PROMPT = 'Tap here to send a message';
  const GAME_CURVE_EXPONENT = 2;
  const JUKEBOX_CURVE_EXPONENT = 2;
  const GLOBAL_STYLE_ID = 'qolbox-style';
  const MENU_KEY_LABEL = 'F8';
  const MENU_KEY = 'F8';
  const QOLBOX_MENU_ID = 'qolboxOnboardingMenu';
  const QOLBOX_MENU_ROOT_CLASS = 'qolbox-menu-open';
  const FEATURE_FULLSCREEN = 'fullscreen';
  const FEATURE_AUDIO = 'audio';
  const FEATURE_RESERVE = 'reserve';
  const FEATURE_CHAT = 'chat';
  const FEATURE_GAME_START_ALERT = 'gameStartAlert';
  const FEATURE_DEFINITIONS = [
    {
      key: FEATURE_FULLSCREEN,
      title: 'Fullscreen Layout',
      shortTitle: 'Fullscreen',
      summary: 'Center and scale hitbox.io so the play area uses the browser window cleanly.',
    },
    {
      key: FEATURE_AUDIO,
      title: 'Audio Controls',
      shortTitle: 'Audio',
      summary: 'Remember volume choices, make the sliders easier to adjust, and keep jukebox mute behavior stable.',
    },
    {
      key: FEATURE_RESERVE,
      title: 'Reserve Spots',
      shortTitle: 'Reserve',
      summary: 'Wait for a spot in full custom lobbies instead of immediately giving up on room_full.',
    },
    {
      key: FEATURE_CHAT,
      title: 'Chat Cancel',
      shortTitle: 'Chat',
      summary: 'Press Esc while typing to discard the draft and return to the game without sending anything.',
    },
    {
      key: FEATURE_GAME_START_ALERT,
      title: 'Away Game Alert',
      shortTitle: 'Game Alert',
      summary: 'Flash the tab title and favicon when a lobby game starts while you are away and playing.',
    },
  ];

  const FALLBACK_BASE_WIDTH = 800;
  const FALLBACK_BASE_HEIGHT = 500;
  const MENU_FRAME_PADDING_PX = 0;
  const GAMEPLAY_SAFE_TOP_PX = 0;
  const GAMEPLAY_SAFE_BOTTOM_PX = 0;
  const GAMEPLAY_SAFE_SIDE_PX = 0;
  const SCORE_ROW_FALLBACK_RGB = { red: 225, green: 21, blue: 0 };
  const TEAM_SCORE_COLORS = new Map([
    [2, { red: 225, green: 21, blue: 0 }],
    [3, { red: 0, green: 117, blue: 225 }],
  ]);
  const FULLSCREEN_GAMEPLAY_LAYER_SELECTOR = '#pixiContainer, #singlePlayer, .singlePlayer';
  const FULLSCREEN_EDITOR_LAYER_SELECTOR = '#editorContainer';
  const FULLSCREEN_MENU_LAYER_SELECTOR = '.replayViewer';
  const CHAT_INPUT_SELECTOR = '.inGameChat .input, .lobbyContainer .chatBox .input';
  const FULLSCREEN_PLAY_LAYER_SELECTOR = [
    FULLSCREEN_GAMEPLAY_LAYER_SELECTOR,
    FULLSCREEN_EDITOR_LAYER_SELECTOR,
  ].join(', ');
  const FULLSCREEN_RENDER_LAYER_SELECTOR = [
    FULLSCREEN_PLAY_LAYER_SELECTOR,
    FULLSCREEN_MENU_LAYER_SELECTOR,
  ].join(', ');
  const FULLSCREEN_RENDER_CANVAS_SELECTORS = [
    '#pixiContainer canvas',
    '#singlePlayer canvas',
    '.singlePlayer canvas',
    '#editorContainer > canvas',
    '.replayViewer canvas',
  ];
  const FULLSCREEN_RENDER_CANVAS_SELECTOR = FULLSCREEN_RENDER_CANVAS_SELECTORS.join(', ');
  const FULLSCREEN_RENDER_CANVAS_FOCUS_SELECTOR = FULLSCREEN_RENDER_CANVAS_SELECTORS
    .flatMap(selector => [`${selector}:focus`, `${selector}:focus-visible`])
    .join(', ');
  const FULLSCREEN_LAYOUT_TARGET_SELECTOR = [
    '#appContainer',
    '#relativeContainer',
    '#backgroundImage',
    FULLSCREEN_RENDER_LAYER_SELECTOR,
    FULLSCREEN_RENDER_CANVAS_SELECTOR,
    '.inGameCSS',
    '.scores',
    '.spectateControls',
  ].join(', ');
  const FEATURE_PATCH_TARGET_SELECTOR = [
    CHAT_INPUT_SELECTOR,
    '.items.left',
    '.items.left .item',
    '.jukebox',
    '.jukebox .knob.volumeContainer',
    '#ytContainer',
    '#ytContainer iframe',
    '.roomListContainer',
    '.roomListContainer .scrollBox tr',
    '.roomListContainer .bottomButton.right',
    '.passwordWindowContainer',
    '.connectingWindowContainer',
    '.lobbyContainer',
  ].join(', ');
  const FULLSCREEN_SETTLE_PASSES = 4;
  const FULLSCREEN_NATIVE_LAYOUT_WAIT_MS = 2500;
  const RESIZE_SETTLE_PASSES = 2;

  const JUKEBOX_MIN_ANGLE = -40;
  const JUKEBOX_MAX_ANGLE = 220;
  const JUKEBOX_ARC_CENTER = 14;
  const JUKEBOX_ARC_RADIUS = 12;
  const JUKEBOX_WHEEL_STEP = 5;
  const JUKEBOX_DRAG_SENSITIVITY = 1;
  const JUKEBOX_ANGLE_EPSILON = 1e-6;
  const YOUTUBE_HOOK_RETRY_DELAY_MS = 250;
  const YOUTUBE_HOOK_MAX_RETRIES = 120;
  const RESERVE_BUTTON_TEXT = 'RESERVE';
  const JOIN_BUTTON_TEXT = 'JOIN';
  const RESERVE_WAIT_TITLE_TEXT = 'Waiting for a Spot';
  const RESERVE_WAIT_TEXT = 'Waiting for someone to leave...';
  const RESERVE_STATUS_FALLBACK_TEXT = 'Connecting...';
  const RESERVE_UNAVAILABLE_TITLE_TEXT = 'Lobby Not Available';
  const RESERVE_ONE_PERSON_TEXT = 'This lobby only allows one person, so there is no spot to reserve.';
  const RESERVE_RETRY_DELAY_MS = 2500;
  const RESERVE_COUNTDOWN_UPDATE_MS = 100;
  const RESERVE_RETRY_AUDIO_SUPPRESS_MS = 900;
  const RESERVE_JOINED_ROOM_FULL_SUPPRESS_MS = 12000;
  const RESERVE_ROOM_FULL_PATTERN = /room[_ ]?full|room is full/i;
  const RESERVE_ROOM_CLOSED_PATTERN = /room[_ ]?not[_ ]?found|room has just closed/i;
  const RESERVE_WRONG_PASSWORD_PATTERN = /wrong[_ ]?password|password incorrect|incorrect password/i;
  const GAME_START_TITLE_PREFIX = '[GAME STARTED] ';
  const GAME_PULLED_TITLE_PREFIX = '[PULLED INTO GAME] ';
  const GAME_START_TITLE_PREFIXES = [GAME_START_TITLE_PREFIX, GAME_PULLED_TITLE_PREFIX];
  const GAME_START_INDICATOR_DELAY_MS = 1200;
  const GAME_START_WATCH_INTERVAL_MS = 750;
  const GAME_START_FLASH_INTERVAL_MS = 700;
  const GAME_START_END_WATCH_INTERVAL_MS = 1000;
  const GAME_START_FAVICON_HREF =
    'data:image/svg+xml,%3Csvg xmlns=%22http://www.w3.org/2000/svg%22 viewBox=%220 0 64 64%22%3E%3Crect width=%2264%22 height=%2264%22 rx=%2212%22 fill=%22%23f5c542%22/%3E%3Cpath d=%22M32 10 56 54H8Z%22 fill=%22%23111111%22/%3E%3Crect x=%2229%22 y=%2223%22 width=%226%22 height=%2217%22 rx=%223%22 fill=%22%23f5c542%22/%3E%3Ccircle cx=%2232%22 cy=%2247%22 r=%223%22 fill=%22%23f5c542%22/%3E%3C/svg%3E';
  const IS_QOLBOX_GAME_PAGE = /\/game2\.html$/i.test(window.location.pathname);

  if (!IS_QOLBOX_GAME_PAGE) {
    installTopLevelGameStartRelay();
    return;
  }

  let featureSettings = loadFeatureSettings();
  let onboardingComplete = loadOnboardingComplete();
  let onboardingStepIndex = 0;
  let qolboxMenuMode = 'closed';
  let qolboxMenuHooksInstalled = false;
  let gamePercent = loadGamePercent();
  let currentGameMenuItem = null;
  let originalHowlVolume = null;
  let originalHowlPlay = null;
  let settingGameVolumeInternally = false;

  let jukeboxState = loadJukeboxState();
  let currentJukeboxMenuItem = null;
  let activeKnobDrag = null;
  let trackedPlayers = new Set();
  let youTubeHookInstalled = false;
  let youTubeHookRetryTimer = 0;
  let youTubeHookRetryCount = 0;
  let youTubeReadyCallbackHookInstalled = false;
  let fullscreenHooksInstalled = false;
  let lastFullscreenSignature = '';
  let scheduledWorkRaf = 0;
  let scheduledWorkForce = false;
  let scheduledWorkFeatures = false;
  let scheduledWorkPasses = 0;
  let fullscreenMutationObserver = null;
  let fullscreenResizeObserver = null;
  let fullscreenStyleSnapshots = new WeakMap();
  let fullscreenNativeLayoutWaitStartedAt = 0;
  let observedResizeTargets = new WeakSet();
  let gameReadyHookInstalled = false;
  let chatEscapeHooksInstalled = false;
  let tabFocusHooksInstalled = false;
  let reserveSocketHookInstalled = false;
  let reserveFeatureDomPatched = false;
  let reserveSelectedRoomRow = null;
  let reserveSelectedRoomSignature = '';
  let reserveSelectedRoomWasFull = false;
  let reserveSelectedRoomWasUnavailable = false;
  let reservePasswordPromptPending = false;
  let reserveCapturedJoin = null;
  let reserveStatusWatchTimer = 0;
  let reserveCountdownTimer = 0;
  let reserveRetryAudioSuppressUntil = 0;
  let reserveJoinedRoomFullSuppressUntil = 0;
  let reserveState = null;
  let suppressEscapeKeyUntil = 0;
  let lobbyMusicPatchInstalled = false;
  let gameStartIndicatorHooksInstalled = false;
  let gameStartSessionHookTarget = null;
  let gameStartIndicatorActive = false;
  let gameStartIndicatorTimer = 0;
  let gameStartWatchTimer = 0;
  let gameStartEndWatchTimer = 0;
  let gameStartIndicatorFlashTimer = 0;
  let gameStartIndicatorFlashOn = false;
  let gameStartIndicatorFaviconLink = null;
  let gameStartOriginalFavicon = null;
  let gameStartOriginalTitle = '';
  let gameStartWasPlayingWhenUnfocused = false;
  let gameStartWasInLobbyWhenUnfocused = false;
  let gameStartIndicatorReason = 'started';
  let gameStartPageFocused = true;

  function clampPercent(value, fallback = 0) {
    if (value === null || value === undefined || (typeof value === 'string' && value.trim() === '')) {
      return fallback;
    }

    const numericValue = Number(value);
    if (!Number.isFinite(numericValue)) {
      return fallback;
    }

    return Math.max(0, Math.min(100, Math.round(numericValue / STEP_PERCENT) * STEP_PERCENT));
  }

  function clampJukeboxPercent(value) {
    if (value === null || value === undefined || (typeof value === 'string' && value.trim() === '')) {
      return DEFAULT_JUKEBOX_PERCENT;
    }

    const numericValue = Number(value);
    if (!Number.isFinite(numericValue)) {
      return DEFAULT_JUKEBOX_PERCENT;
    }

    return Math.max(0, Math.min(100, Math.round(numericValue)));
  }

  function loadGamePercent() {
    try {
      return clampPercent(localStorage.getItem(GAME_VOLUME_KEY), DEFAULT_GAME_PERCENT);
    } catch {
      return DEFAULT_GAME_PERCENT;
    }
  }

  function saveGamePercent() {
    try {
      localStorage.setItem(GAME_VOLUME_KEY, String(gamePercent));
    } catch {
      // Ignore storage failures.
    }
  }

  function loadJukeboxState() {
    const fallback = { percent: null, muted: false };

    try {
      const rawState = localStorage.getItem(JUKEBOX_STATE_KEY);
      if (!rawState) {
        return fallback;
      }

      const parsed = JSON.parse(rawState);
      return {
        percent:
          parsed && parsed.percent !== null && parsed.percent !== undefined
            ? clampJukeboxPercent(parsed.percent)
            : null,
        muted: Boolean(parsed && parsed.muted),
      };
    } catch {
      return fallback;
    }
  }

  function saveJukeboxState() {
    try {
      localStorage.setItem(JUKEBOX_STATE_KEY, JSON.stringify(jukeboxState));
    } catch {
      // Ignore storage failures.
    }
  }

  function getDefaultFeatureSettings() {
    const defaults = {};
    for (const feature of FEATURE_DEFINITIONS) {
      defaults[feature.key] = true;
    }
    return defaults;
  }

  function loadFeatureSettings() {
    const defaults = getDefaultFeatureSettings();

    try {
      const rawSettings = localStorage.getItem(FEATURE_SETTINGS_KEY);
      if (!rawSettings) {
        return defaults;
      }

      const parsedSettings = JSON.parse(rawSettings);
      if (!parsedSettings || typeof parsedSettings !== 'object') {
        return defaults;
      }

      for (const feature of FEATURE_DEFINITIONS) {
        if (Object.prototype.hasOwnProperty.call(parsedSettings, feature.key)) {
          defaults[feature.key] = parsedSettings[feature.key] !== false;
        }
      }
    } catch {
      // Defaults keep the script usable when storage is unavailable.
    }

    return defaults;
  }

  function saveFeatureSettings() {
    try {
      localStorage.setItem(FEATURE_SETTINGS_KEY, JSON.stringify(featureSettings));
    } catch {
      // Ignore storage failures.
    }
  }

  function loadOnboardingComplete() {
    try {
      return localStorage.getItem(ONBOARDING_COMPLETE_KEY) === 'true';
    } catch {
      return false;
    }
  }

  function saveOnboardingComplete() {
    try {
      localStorage.setItem(ONBOARDING_COMPLETE_KEY, 'true');
    } catch {
      // Ignore storage failures.
    }
  }

  function isKnownFeature(featureKey) {
    return FEATURE_DEFINITIONS.some(feature => feature.key === featureKey);
  }

  function isFeatureEnabled(featureKey) {
    return featureSettings[featureKey] !== false;
  }

  function shouldRunFeature(featureKey) {
    return onboardingComplete && isFeatureEnabled(featureKey);
  }

  function percentToGameScalar(percent) {
    return Math.pow(clampPercent(percent, DEFAULT_GAME_PERCENT) / 100, GAME_CURVE_EXPONENT);
  }

  function percentToJukeboxVolume(percent) {
    return Math.round(Math.pow(clampJukeboxPercent(percent) / 100, JUKEBOX_CURVE_EXPONENT) * 100);
  }

  function percentToJukeboxAngle(percent) {
    const normalized = clampJukeboxPercent(percent) / 100;
    return JUKEBOX_MIN_ANGLE + (JUKEBOX_MAX_ANGLE - JUKEBOX_MIN_ANGLE) * normalized;
  }

  function getKeyboardPercentTarget(event, currentPercent, stepPercent) {
    if (!event || event.altKey || event.ctrlKey || event.metaKey) {
      return null;
    }

    const current = Number.isFinite(Number(currentPercent)) ? Number(currentPercent) : 0;
    const step = Math.max(1, Number(stepPercent) || 1);

    switch (event.key) {
      case 'ArrowUp':
      case 'ArrowRight':
        return current + step;
      case 'ArrowDown':
      case 'ArrowLeft':
        return current - step;
      case 'PageUp':
        return current + step * KEYBOARD_PAGE_STEP_MULTIPLIER;
      case 'PageDown':
        return current - step * KEYBOARD_PAGE_STEP_MULTIPLIER;
      case 'Home':
        return 0;
      case 'End':
        return 100;
      default:
        return null;
    }
  }

  function angleToJukeboxPercent(angle) {
    const numericAngle = Number(angle);
    if (!Number.isFinite(numericAngle)) {
      return DEFAULT_JUKEBOX_PERCENT;
    }

    const normalizedAngle = normalizeJukeboxAngle(numericAngle);
    const normalized =
      (Math.min(JUKEBOX_MAX_ANGLE, Math.max(JUKEBOX_MIN_ANGLE, normalizedAngle)) - JUKEBOX_MIN_ANGLE) /
      (JUKEBOX_MAX_ANGLE - JUKEBOX_MIN_ANGLE);
    return clampJukeboxPercent(normalized * 100);
  }

  function normalizeJukeboxAngle(angle) {
    const numericAngle = Number(angle);
    if (!Number.isFinite(numericAngle)) {
      return percentToJukeboxAngle(DEFAULT_JUKEBOX_PERCENT);
    }

    const candidates = [numericAngle, numericAngle + 360, numericAngle - 360];
    for (const candidate of candidates) {
      if (
        candidate >= JUKEBOX_MIN_ANGLE - JUKEBOX_ANGLE_EPSILON &&
        candidate <= JUKEBOX_MAX_ANGLE + JUKEBOX_ANGLE_EPSILON
      ) {
        return Math.max(JUKEBOX_MIN_ANGLE, Math.min(JUKEBOX_MAX_ANGLE, candidate));
      }
    }

    return Math.max(JUKEBOX_MIN_ANGLE, Math.min(JUKEBOX_MAX_ANGLE, numericAngle));
  }

  function parseJukeboxAngleFromTransform(transform) {
    if (typeof transform !== 'string' || transform === '' || transform === 'none') {
      return null;
    }

    const rotateMatch = transform.match(/rotate\(\s*(-?\d+(?:\.\d+)?)deg\s*\)/i);
    if (rotateMatch) {
      return normalizeJukeboxAngle(Number(rotateMatch[1]));
    }

    const matrixMatch = transform.match(/^matrix\(([^)]+)\)$/i);
    if (matrixMatch) {
      const values = matrixMatch[1].split(',').map(value => Number(value.trim()));
      if (values.length >= 4 && values.every(Number.isFinite)) {
        return normalizeJukeboxAngle((Math.atan2(values[1], values[0]) * 180) / Math.PI);
      }
    }

    const matrix3dMatch = transform.match(/^matrix3d\(([^)]+)\)$/i);
    if (matrix3dMatch) {
      const values = matrix3dMatch[1].split(',').map(value => Number(value.trim()));
      if (values.length >= 16 && values.every(Number.isFinite)) {
        return normalizeJukeboxAngle((Math.atan2(values[1], values[0]) * 180) / Math.PI);
      }
    }

    return null;
  }

  function polarToArcPoint(angle) {
    const radians = ((angle + 180) * Math.PI) / 180;
    return {
      x: JUKEBOX_ARC_CENTER + JUKEBOX_ARC_RADIUS * Math.cos(radians),
      y: JUKEBOX_ARC_CENTER + JUKEBOX_ARC_RADIUS * Math.sin(radians),
    };
  }

  function getFeatureRootClass(featureKey) {
    return `qolbox-feature-${featureKey}`;
  }

  function applyFeatureRootClasses() {
    const root = document.documentElement;
    if (!root || !root.classList) {
      return;
    }

    for (const feature of FEATURE_DEFINITIONS) {
      root.classList.toggle(getFeatureRootClass(feature.key), shouldRunFeature(feature.key));
    }

    root.classList.toggle(QOLBOX_MENU_ROOT_CLASS, qolboxMenuMode !== 'closed');
  }

  function prefixSelectorList(prefix, selectorList) {
    return selectorList
      .split(',')
      .map(selector => `${prefix} ${selector.trim()}`)
      .join(',\n      ');
  }

  function ensureGlobalStyle() {
    if (document.getElementById(GLOBAL_STYLE_ID)) {
      return true;
    }

    const styleHost = document.head || document.documentElement;
    if (!styleHost) {
      return false;
    }

    const style = document.createElement('style');
    style.id = GLOBAL_STYLE_ID;
    style.textContent = `
      html.qolbox-feature-fullscreen,
      html.qolbox-feature-fullscreen body {
        width: 100vw !important;
        height: 100vh !important;
        margin: 0 !important;
        overflow: hidden !important;
        background: #0a0a0a !important;
      }

      html.qolbox-feature-fullscreen #appContainer,
      html.qolbox-feature-fullscreen #relativeContainer {
        margin: 0 !important;
        max-width: none !important;
        max-height: none !important;
        border: 0 !important;
      }

      html.qolbox-feature-fullscreen #backgroundImage,
      html.qolbox-feature-fullscreen .mainMenuFancy {
        position: fixed !important;
        left: 0 !important;
        top: 0 !important;
        right: auto !important;
        bottom: auto !important;
        width: 100vw !important;
        height: 100vh !important;
        max-width: none !important;
        max-height: none !important;
      }

      ${prefixSelectorList('html.qolbox-feature-fullscreen', FULLSCREEN_RENDER_LAYER_SELECTOR)} {
        position: absolute !important;
        margin: 0 !important;
        max-width: none !important;
        max-height: none !important;
        overflow: hidden !important;
        transform: none !important;
      }

      html.qolbox-feature-fullscreen #editorContainer {
        overflow: visible !important;
        transform-origin: top left !important;
      }

      ${prefixSelectorList('html.qolbox-feature-fullscreen', FULLSCREEN_RENDER_CANVAS_SELECTOR)} {
        display: block !important;
        max-width: none !important;
        max-height: none !important;
        transform: none !important;
      }

      /* Keep game keyboard focus after chat closes without drawing a browser focus ring over the playfield. */
      ${prefixSelectorList('html.qolbox-feature-chat', FULLSCREEN_RENDER_CANVAS_FOCUS_SELECTOR)} {
        outline: 0 !important;
        outline-color: transparent !important;
        outline-style: none !important;
        outline-width: 0 !important;
      }

      html.qolbox-feature-fullscreen .scores {
        display: none !important;
      }

      html.qolbox-feature-fullscreen .scores .title {
        background-color: rgb(56, 56, 56) !important;
      }

      html.qolbox-feature-fullscreen .scores .title,
      html.qolbox-feature-fullscreen .scores .entryContainer,
      html.qolbox-feature-fullscreen .scores .entryContainer .number,
      html.qolbox-feature-fullscreen .scores .entryContainer .name {
        vertical-align: middle !important;
      }

      html.qolbox-feature-fullscreen #email,
      html.qolbox-feature-fullscreen #songcredit,
      html.qolbox-feature-fullscreen #betaLink {
        display: none !important;
      }

      html.qolbox-feature-reserve body.qolbox-reserve-active .connectingWindowContainer:not(.qolboxReserveWindowContainer) {
        display: none !important;
      }

      .qolboxReserveWindowContainer {
        display: none;
        z-index: 10000;
      }

      html.qolbox-feature-reserve body.qolbox-reserve-active .qolboxReserveWindowContainer {
        display: block !important;
      }

      html.qolbox-feature-reserve .roomListContainer .bottomButton.right.qolboxReserveUnavailable {
        cursor: not-allowed !important;
        filter: grayscale(1) saturate(0.35) !important;
        opacity: 0.48 !important;
      }

      .qolboxReserveWindowContainer .qolboxReserveContent {
        align-items: center;
        bottom: 48px;
        display: flex;
        flex-direction: column;
        gap: 4px;
        justify-content: center;
        left: 16px;
        pointer-events: none;
        position: absolute;
        right: 16px;
        text-align: center;
        top: 50px;
      }

      .qolboxReserveWindowContainer .connectingWindow .spinner {
        bottom: auto !important;
        flex: 0 0 auto;
        left: auto !important;
        margin: 0 auto;
        order: 2;
        position: static !important;
        right: auto !important;
        top: auto !important;
      }

      .qolboxReserveWindowContainer .qolboxReserveStatus,
      .qolboxReserveWindowContainer .qolboxReserveCountdown,
      .qolboxReserveWindowContainer .qolboxReserveMessage {
        width: 100%;
      }

      .qolboxReserveWindowContainer .qolboxReserveStatus {
        color: rgb(205, 210, 218);
        font-size: 11px;
        line-height: 14px;
        min-height: 14px;
        order: 1;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
      }

      .qolboxReserveWindowContainer .qolboxReserveCountdown {
        color: rgb(242, 242, 242);
        font-size: 13px;
        line-height: 16px;
        min-height: 16px;
        order: 3;
        white-space: nowrap;
      }

      .qolboxReserveWindowContainer .qolboxReserveMessage {
        color: rgb(242, 242, 242);
        font-size: 13px;
        line-height: 16px;
        order: 1;
        white-space: normal;
      }

      .qolboxMenuOverlay {
        align-items: center;
        background: rgba(0, 0, 0, 0.72);
        box-sizing: border-box;
        display: flex;
        font-family: inherit;
        inset: 0;
        justify-content: center;
        opacity: 0;
        padding: 10px;
        pointer-events: none;
        position: fixed;
        z-index: 2147483647;
      }

      html.qolbox-menu-open .qolboxMenuOverlay {
        opacity: 1;
        pointer-events: auto;
      }

      .qolboxMenuPanel {
        background: rgba(22, 24, 28, 0.98);
        border: 2px solid rgb(69, 75, 86);
        border-radius: 4px;
        box-shadow: 0 8px 28px rgba(0, 0, 0, 0.55);
        box-sizing: border-box;
        color: #f4f4f4;
        display: flex;
        flex-direction: column;
        max-height: calc(100vh - 20px);
        max-width: min(430px, calc(100vw - 20px));
        overflow: hidden;
        width: 430px;
      }

      .qolboxMenuTopBar {
        background: rgb(56, 56, 56);
        border-bottom: 2px solid rgb(14, 16, 20);
        box-sizing: border-box;
        color: #f5c542;
        font-size: 14px;
        font-weight: 700;
        line-height: 18px;
        min-height: 32px;
        padding: 7px 12px;
        text-align: center;
      }

      .qolboxMenuBody {
        box-sizing: border-box;
        display: flex;
        flex: 1 1 auto;
        flex-direction: column;
        gap: 8px;
        min-height: 0;
        overflow: auto;
        padding: 12px;
      }

      .qolboxMenuTitle {
        color: #ffffff;
        font-size: 18px;
        font-weight: 700;
        letter-spacing: 0;
        line-height: 22px;
        margin: 0;
      }

      .qolboxMenuText {
        color: #d7dbe1;
        font-size: 12px;
        line-height: 16px;
        margin: 0;
      }

      .qolboxMenuProgress {
        align-items: center;
        display: flex;
        gap: 4px;
        margin-top: 2px;
      }

      .qolboxMenuDot {
        background: rgba(255, 255, 255, 0.25);
        border-radius: 999px;
        height: 5px;
        width: 12px;
      }

      .qolboxMenuDot.active {
        background: #f5c542;
      }

      .qolboxMenuToggleGroup {
        background: rgb(31, 34, 39);
        border: 1px solid rgb(72, 78, 89);
        border-radius: 3px;
        display: grid;
        grid-template-columns: 1fr 1fr;
        overflow: hidden;
      }

      .qolboxMenuButton,
      .qolboxMenuToggle {
        appearance: none;
        border: 0;
        box-sizing: border-box;
        cursor: pointer;
        font-family: inherit;
        font-size: 12px;
        font-weight: 700;
        letter-spacing: 0;
        line-height: 14px;
        min-height: 28px;
      }

      .qolboxMenuToggle {
        background: transparent;
        color: #cfd3da;
      }

      .qolboxMenuToggle + .qolboxMenuToggle {
        border-left: 1px solid rgba(255, 255, 255, 0.14);
      }

      .qolboxMenuToggle.active {
        background: #f5c542;
        color: #111111;
      }

      .qolboxMenuActions {
        display: flex;
        gap: 6px;
        justify-content: flex-end;
        margin-top: 4px;
      }

      .qolboxMenuButton {
        background: rgb(47, 51, 58);
        border: 1px solid rgb(92, 98, 108);
        border-radius: 3px;
        color: #f4f4f4;
        padding: 0 12px;
      }

      .qolboxMenuButton.primary {
        background: #f5c542;
        color: #111111;
      }

      .qolboxMenuButton:disabled {
        cursor: default;
        opacity: 0.45;
      }

      .qolboxMenuSettingsList {
        display: grid;
        gap: 6px;
      }

      .qolboxMenuFeatureRow {
        align-items: center;
        border-bottom: 1px solid rgba(255, 255, 255, 0.09);
        display: grid;
        gap: 8px;
        grid-template-columns: minmax(0, 1fr) 108px;
        padding: 0 0 6px;
      }

      .qolboxMenuFeatureName {
        color: #ffffff;
        font-size: 12px;
        font-weight: 700;
        line-height: 15px;
      }

      .qolboxMenuFeatureSummary {
        color: #c4c9d1;
        font-size: 10px;
        line-height: 13px;
        margin-top: 1px;
      }

      .qolboxMenuKeybind {
        background: rgb(47, 51, 58);
        border: 1px solid rgb(92, 98, 108);
        border-radius: 3px;
        color: #ffffff;
        display: inline-block;
        font-size: 12px;
        font-weight: 700;
        line-height: 16px;
        padding: 1px 6px;
      }

      @media (max-height: 620px) {
        .qolboxMenuBody {
          gap: 6px;
          padding: 9px;
        }
      }

      @media (prefers-reduced-motion: reduce) {
        .qolboxMenuOverlay {
          transition: none;
        }
      }
    `;

    styleHost.appendChild(style);
    return true;
  }

  function rememberFullscreenStyle(element, property) {
    if (!element || !element.style) {
      return;
    }

    let snapshot = fullscreenStyleSnapshots.get(element);
    if (!snapshot) {
      snapshot = new Map();
      fullscreenStyleSnapshots.set(element, snapshot);
    }

    if (snapshot.has(property)) {
      return;
    }

    const value = element.style.getPropertyValue(property);
    const priority = element.style.getPropertyPriority(property);
    snapshot.set(property, {
      priority,
      value,
      hadValue: value !== '' || priority !== '',
    });
  }

  function setImportantStyle(element, property, value) {
    if (!element || !element.style) {
      return;
    }

    rememberFullscreenStyle(element, property);
    element.style.setProperty(property, value, 'important');
  }

  function restoreFullscreenStyles(element, properties) {
    if (!element || !element.style) {
      return;
    }

    const snapshot = fullscreenStyleSnapshots.get(element);
    for (const property of properties) {
      const original = snapshot && snapshot.get(property);
      if (original && original.hadValue) {
        element.style.setProperty(property, original.value, original.priority);
      } else {
        element.style.removeProperty(property);
      }
    }
  }

  function hasNativeLayoutSeed() {
    const appContainer = document.getElementById('appContainer');
    const relativeContainer = document.getElementById('relativeContainer');
    return Boolean(
      appContainer &&
        relativeContainer &&
        appContainer.style.width &&
        appContainer.style.height &&
        relativeContainer.style.width &&
        relativeContainer.style.height
    );
  }

  function shouldWaitForNativeLayoutSeed() {
    if (hasNativeLayoutSeed()) {
      fullscreenNativeLayoutWaitStartedAt = 0;
      return false;
    }

    if (!document.getElementById('appContainer') || !document.getElementById('relativeContainer')) {
      return false;
    }

    if (!fullscreenNativeLayoutWaitStartedAt) {
      fullscreenNativeLayoutWaitStartedAt = Date.now();
    }

    return Date.now() - fullscreenNativeLayoutWaitStartedAt < FULLSCREEN_NATIVE_LAYOUT_WAIT_MS;
  }

  function restoreNativeLayoutSizeFallback() {
    const canvas = getActiveRenderCanvas();
    const backingWidth = Number(canvas && canvas.width);
    const backingHeight = Number(canvas && canvas.height);
    const pixelRatio = Math.max(1, Number(window.devicePixelRatio) || 1);
    const width = backingWidth / pixelRatio;
    const height = backingHeight / pixelRatio;

    if (
      !Number.isFinite(width) ||
      !Number.isFinite(height) ||
      width <= 0 ||
      height <= 0 ||
      width >= window.innerWidth * 0.98 ||
      height >= window.innerHeight * 0.98
    ) {
      return;
    }

    const containerWidthPx = `${Math.floor(width)}px`;
    const containerHeightPx = `${Math.floor(height)}px`;
    const canvasWidthPx = `${Math.round(width * 10) / 10}px`;
    const canvasHeightPx = `${Math.round(height * 10) / 10}px`;
    for (const element of [
      document.getElementById('appContainer'),
      document.getElementById('relativeContainer'),
    ]) {
      if (!element || !element.style || element.style.width || element.style.height) {
        continue;
      }

      element.style.width = containerWidthPx;
      element.style.height = containerHeightPx;
    }

    if (canvas && canvas.style && !canvas.style.width && !canvas.style.height) {
      canvas.style.width = canvasWidthPx;
      canvas.style.height = canvasHeightPx;
    }
  }

  function clearFullscreenLayoutStyles() {
    lastFullscreenSignature = '';

    restoreFullscreenStyles(document.documentElement, ['overflow']);
    restoreFullscreenStyles(document.body, ['overflow', 'margin', 'background-color']);

    restoreFullscreenStyles(document.getElementById('appContainer'), [
      'position',
      'left',
      'top',
      'right',
      'bottom',
      'margin',
      'width',
      'height',
      'max-width',
      'max-height',
      'border',
      'overflow',
    ]);
    restoreFullscreenStyles(document.getElementById('relativeContainer'), [
      'position',
      'left',
      'top',
      'right',
      'bottom',
      'margin',
      'width',
      'height',
      'overflow',
    ]);
    restoreFullscreenStyles(document.getElementById('backgroundImage'), [
      'position',
      'left',
      'top',
      'right',
      'bottom',
      'width',
      'height',
    ]);

    const frameProperties = [
      'position',
      'left',
      'top',
      'right',
      'bottom',
      'margin',
      'width',
      'height',
      'max-width',
      'max-height',
      'overflow',
      'transform',
      'transform-origin',
      'zoom',
    ];
    for (const element of document.querySelectorAll(FULLSCREEN_RENDER_LAYER_SELECTOR)) {
      restoreFullscreenStyles(element, frameProperties);
      delete element.dataset.qolboxEditorNativeWidth;
      delete element.dataset.qolboxEditorNativeHeight;
      delete element.dataset.qolboxEditorScale;
    }

    for (const canvas of document.querySelectorAll(FULLSCREEN_RENDER_CANVAS_SELECTOR)) {
      restoreFullscreenStyles(canvas, frameProperties);
    }

    for (const overlay of document.querySelectorAll('.inGameCSS')) {
      restoreFullscreenStyles(overlay, ['zoom', 'transform-origin']);
    }

    for (const scorePanel of document.querySelectorAll('.scores')) {
      resetScorePanelLayout(scorePanel);
      restoreFullscreenStyles(scorePanel, ['display']);
    }

    for (const scoreRow of document.querySelectorAll('.scores .entryContainer')) {
      restoreFullscreenStyles(scoreRow, ['background-color']);
    }

    for (const spectateControls of document.querySelectorAll('.spectateControls')) {
      resetSpectateControlsLayout(spectateControls);
    }

    restoreNativeFullscreenPatch();
    restoreNativeLayoutSizeFallback();
    fullscreenStyleSnapshots = new WeakMap();
  }

  function getViewportSize() {
    return {
      width: Math.max(window.innerWidth, document.documentElement.clientWidth || 0),
      height: Math.max(window.innerHeight, document.documentElement.clientHeight || 0),
    };
  }

  function getBaseGameSize() {
    const game = window.a8;
    const width = Number(game && game.Xg);
    const height = Number(game && game.Zg);

    return {
      width: Number.isFinite(width) && width > 0 ? width : FALLBACK_BASE_WIDTH,
      height: Number.isFinite(height) && height > 0 ? height : FALLBACK_BASE_HEIGHT,
    };
  }

  function isElementVisible(element) {
    if (!element || !element.isConnected) {
      return false;
    }

    const style = window.getComputedStyle(element);
    if (style.display === 'none' || style.visibility === 'hidden') {
      return false;
    }

    const rect = element.getBoundingClientRect();
    return rect.width > 0 && rect.height > 0;
  }

  function isEditorLayer(element) {
    return Boolean(element && element.id === 'editorContainer');
  }

  function isEditorCanvas(element) {
    return Boolean(
      element &&
        element.tagName === 'CANVAS' &&
        element.parentElement &&
        element.parentElement.id === 'editorContainer'
    );
  }

  function hasVisibleLayer(selector) {
    for (const layer of document.querySelectorAll(selector)) {
      if (isElementVisible(layer)) {
        return true;
      }
    }

    return false;
  }

  function hasReserveSuccessfulJoinLayer() {
    return hasVisibleLayer('.lobbyContainer') || hasVisibleLayer(FULLSCREEN_GAMEPLAY_LAYER_SELECTOR);
  }

  function escapeMenuText(value) {
    return String(value)
      .replace(/&/g, '&amp;')
      .replace(/</g, '&lt;')
      .replace(/>/g, '&gt;')
      .replace(/"/g, '&quot;');
  }

  function getOnboardingSteps() {
    return [
      {
        type: 'intro',
        title: 'Welcome to QOLBox',
        text:
          'QOLBox makes hitbox.io feel less cramped and less repetitive, with fullscreen layout, lobby quality-of-life fixes, audio controls, and alerts for moments that need your attention.',
      },
      ...FEATURE_DEFINITIONS.map(feature => ({
        type: 'feature',
        featureKey: feature.key,
        title: feature.title,
        text: feature.summary,
      })),
      {
        type: 'finish',
        title: 'Open QOLBox anytime',
        text:
          `Press ${MENU_KEY_LABEL} to open the QOLBox menu later. The menu lets you turn these features on or off whenever you want.`,
      },
    ];
  }

  function getMenuToggleMarkup(featureKey) {
    const enabled = isFeatureEnabled(featureKey);
    return `
      <div class="qolboxMenuToggleGroup" role="group" aria-label="${escapeMenuText(featureKey)} setting">
        <button class="qolboxMenuToggle${enabled ? ' active' : ''}" data-qolbox-action="set-feature" data-feature="${escapeMenuText(featureKey)}" data-enabled="true" aria-pressed="${enabled ? 'true' : 'false'}">Enabled</button>
        <button class="qolboxMenuToggle${enabled ? '' : ' active'}" data-qolbox-action="set-feature" data-feature="${escapeMenuText(featureKey)}" data-enabled="false" aria-pressed="${enabled ? 'false' : 'true'}">Off</button>
      </div>
    `;
  }

  function getOnboardingStepMarkup() {
    const steps = getOnboardingSteps();
    const step = steps[Math.max(0, Math.min(onboardingStepIndex, steps.length - 1))];
    const isFeatureStep = step.type === 'feature';
    const isFirstStep = onboardingStepIndex === 0;
    const isFinalStep = onboardingStepIndex === steps.length - 1;
    const progress = steps
      .map((_, index) => `<span class="qolboxMenuDot${index === onboardingStepIndex ? ' active' : ''}"></span>`)
      .join('');

    return `
      <div class="qolboxMenuTopBar">QOLBox Setup</div>
      <div class="qolboxMenuBody">
        <h1 class="qolboxMenuTitle">${escapeMenuText(step.title)}</h1>
        <p class="qolboxMenuText">${escapeMenuText(step.text)}</p>
        ${isFeatureStep ? getMenuToggleMarkup(step.featureKey) : ''}
        <div class="qolboxMenuProgress" aria-hidden="true">${progress}</div>
        <div class="qolboxMenuActions">
          ${
            isFirstStep
              ? '<button class="qolboxMenuButton" data-qolbox-action="skip-onboarding">Skip</button>'
              : '<button class="qolboxMenuButton" data-qolbox-action="back">Back</button>'
          }
          <button class="qolboxMenuButton primary" data-qolbox-action="${isFinalStep ? 'finish-onboarding' : 'next'}">${isFinalStep ? 'Finish' : 'Next'}</button>
        </div>
      </div>
    `;
  }

  function getSettingsMenuMarkup() {
    const rows = FEATURE_DEFINITIONS.map(feature => {
      return `
        <div class="qolboxMenuFeatureRow">
          <div>
            <div class="qolboxMenuFeatureName">${escapeMenuText(feature.title)}</div>
            <div class="qolboxMenuFeatureSummary">${escapeMenuText(feature.summary)}</div>
          </div>
          ${getMenuToggleMarkup(feature.key)}
        </div>
      `;
    }).join('');

    return `
      <div class="qolboxMenuTopBar">QOLBox Menu</div>
      <div class="qolboxMenuBody">
        <h1 class="qolboxMenuTitle">Feature Settings</h1>
        <p class="qolboxMenuText">Press <span class="qolboxMenuKeybind">${MENU_KEY_LABEL}</span> anytime to reopen this menu.</p>
        <div class="qolboxMenuSettingsList">${rows}</div>
        <div class="qolboxMenuActions">
          <button class="qolboxMenuButton primary" data-qolbox-action="close-menu">Done</button>
        </div>
      </div>
    `;
  }

  function renderQolboxMenu() {
    const menu = document.getElementById(QOLBOX_MENU_ID);
    const panel = menu && menu.querySelector('.qolboxMenuPanel');
    if (!panel) {
      return;
    }

    panel.innerHTML = qolboxMenuMode === 'settings' ? getSettingsMenuMarkup() : getOnboardingStepMarkup();

    window.setTimeout(() => {
      const focusTarget = panel.querySelector('.qolboxMenuButton.primary, .qolboxMenuToggle.active, .qolboxMenuButton');
      focusElementWithoutScroll(focusTarget);
    }, 0);
  }

  function ensureQolboxMenu() {
    let menu = document.getElementById(QOLBOX_MENU_ID);
    if (menu) {
      return menu;
    }

    const host = document.body || document.documentElement;
    if (!host) {
      return null;
    }

    menu = document.createElement('div');
    menu.id = QOLBOX_MENU_ID;
    menu.className = 'qolboxMenuOverlay';
    menu.setAttribute('role', 'dialog');
    menu.setAttribute('aria-modal', 'true');
    menu.innerHTML = '<div class="qolboxMenuPanel"></div>';
    menu.addEventListener('pointerdown', stopQolboxMenuPointerEvent, true);
    menu.addEventListener('mousedown', stopQolboxMenuPointerEvent, true);
    menu.addEventListener('mouseup', stopQolboxMenuPointerEvent, true);
    menu.addEventListener('wheel', stopQolboxMenuPointerEvent, { capture: true, passive: true });
    menu.addEventListener('click', handleQolboxMenuClick, true);
    host.appendChild(menu);
    return menu;
  }

  function openQolboxMenu(mode = 'settings') {
    ensureGlobalStyle();
    if (!ensureQolboxMenu()) {
      return;
    }

    qolboxMenuMode = mode;
    if (mode === 'onboarding') {
      onboardingStepIndex = 0;
    }

    applyFeatureRootClasses();
    renderQolboxMenu();
  }

  function closeQolboxMenu() {
    qolboxMenuMode = 'closed';
    applyFeatureRootClasses();
  }

  function disableFeatureSideEffects(featureKey) {
    switch (featureKey) {
      case FEATURE_RESERVE:
        if (reserveState) {
          stopReserveSpot({ hideNative: false });
        }
        reservePasswordPromptPending = false;
        syncReserveJoinButtonLabel();
        break;
      case FEATURE_GAME_START_ALERT:
        gameStartWasPlayingWhenUnfocused = false;
        gameStartWasInLobbyWhenUnfocused = false;
        clearGameStartWatchTimer();
        clearGameStartIndicator();
        break;
      case FEATURE_AUDIO:
        if (currentJukeboxMenuItem && currentJukeboxMenuItem.isConnected) {
          currentJukeboxMenuItem.remove();
        }
        currentJukeboxMenuItem = null;
        applyGameVolume();
        break;
      case FEATURE_FULLSCREEN:
        clearFullscreenLayoutStyles();
        break;
      default:
        break;
    }
  }

  function setFeatureEnabled(featureKey, enabled) {
    if (!isKnownFeature(featureKey)) {
      return;
    }

    featureSettings[featureKey] = Boolean(enabled);
    saveFeatureSettings();
    applyFeatureRootClasses();

    if (!shouldRunFeature(featureKey)) {
      disableFeatureSideEffects(featureKey);
    }

    if (onboardingComplete) {
      applyPersistentFeatures();
      scheduleUiWork({ force: true, features: true, passes: RESIZE_SETTLE_PASSES });
    }

    renderQolboxMenu();
  }

  function completeOnboarding() {
    onboardingComplete = true;
    saveOnboardingComplete();
    closeQolboxMenu();
    applyFeatureRootClasses();
    applyPersistentFeatures();
    scheduleUiWork({ force: true, features: true, passes: FULLSCREEN_SETTLE_PASSES });
  }

  function handleQolboxMenuClick(event) {
    if (qolboxMenuMode !== 'closed') {
      event.stopPropagation();
    }

    const actionElement =
      event.target instanceof Element ? event.target.closest('[data-qolbox-action]') : null;
    if (!actionElement) {
      return;
    }

    const action = actionElement.dataset.qolboxAction;
    event.preventDefault();
    event.stopImmediatePropagation();

    switch (action) {
      case 'set-feature':
        setFeatureEnabled(actionElement.dataset.feature, actionElement.dataset.enabled === 'true');
        break;
      case 'next':
        onboardingStepIndex = Math.min(onboardingStepIndex + 1, getOnboardingSteps().length - 1);
        renderQolboxMenu();
        break;
      case 'back':
        onboardingStepIndex = Math.max(0, onboardingStepIndex - 1);
        renderQolboxMenu();
        break;
      case 'skip-onboarding':
      case 'finish-onboarding':
        completeOnboarding();
        break;
      case 'close-menu':
        closeQolboxMenu();
        break;
      default:
        break;
    }
  }

  function stopQolboxMenuPointerEvent(event) {
    if (qolboxMenuMode !== 'closed') {
      event.stopPropagation();
    }
  }

  function handleQolboxMenuKey(event) {
    if (qolboxMenuMode !== 'closed' && isEscapeKey(event)) {
      event.preventDefault();
      event.stopImmediatePropagation();

      if (qolboxMenuMode === 'settings') {
        closeQolboxMenu();
      }

      return;
    }

    if (!event || event.altKey || event.ctrlKey || event.metaKey || event.shiftKey) {
      return;
    }

    if (event.key !== MENU_KEY && event.code !== MENU_KEY) {
      return;
    }

    event.preventDefault();
    event.stopImmediatePropagation();

    if (qolboxMenuMode === 'settings') {
      closeQolboxMenu();
      return;
    }

    if (qolboxMenuMode === 'onboarding') {
      return;
    }

    openQolboxMenu(onboardingComplete ? 'settings' : 'onboarding');
  }

  function installQolboxMenuHooks() {
    if (qolboxMenuHooksInstalled) {
      return;
    }

    qolboxMenuHooksInstalled = true;
    window.addEventListener('keydown', handleQolboxMenuKey, true);
    document.addEventListener('keydown', handleQolboxMenuKey, true);
  }

  function showFirstBootOnboarding() {
    if (onboardingComplete || qolboxMenuMode !== 'closed') {
      return;
    }

    openQolboxMenu('onboarding');
  }

  function scheduleFirstBootOnboarding() {
    if (onboardingComplete) {
      return;
    }

    const show = () => window.setTimeout(showFirstBootOnboarding, 0);
    if (document.readyState === 'loading') {
      document.addEventListener('DOMContentLoaded', show, { once: true });
    } else {
      show();
    }
  }

  function cloneReserveJoinValue(value) {
    try {
      return JSON.parse(JSON.stringify(value));
    } catch {
      return value;
    }
  }

  function isReserveJoinPayload(value) {
    return Boolean(
      value &&
        typeof value === 'object' &&
        (typeof value.joinID === 'string' ||
          (Object.prototype.hasOwnProperty.call(value, 'playerName') &&
            Object.prototype.hasOwnProperty.call(value, 'peerID') &&
            Object.prototype.hasOwnProperty.call(value, 'password')))
    );
  }

  function getReserveJoinPayload(args) {
    return args.find(isReserveJoinPayload) || null;
  }

  function captureReserveJoin(socket, eventName, args) {
    if (!shouldRunFeature(FEATURE_RESERVE)) {
      return;
    }

    const payload = getReserveJoinPayload(args);
    const autoJoin = window.autoJoin;
    reserveCapturedJoin = {
      socket,
      eventName,
      args: args.map(cloneReserveJoinValue),
      autoReserve: Boolean(
        payload &&
          autoJoin &&
          typeof autoJoin === 'object' &&
          payload.joinID === autoJoin.address &&
          payload.password === autoJoin.passbypass
      ),
      time: Date.now(),
    };

    if (reserveState && reserveState.active) {
      reserveState.capturedJoin = reserveCapturedJoin;
    }

    scheduleReserveStatusWatch();
  }

  function shouldContinueReserveStatusWatch() {
    if (reserveState && reserveState.active) {
      return true;
    }

    if (isReserveJoinedRoomFullSuppressed()) {
      return true;
    }

    return Boolean(reserveCapturedJoin && Date.now() - reserveCapturedJoin.time < 30000 && !hasReserveSuccessfulJoinLayer());
  }

  function scheduleReserveStatusWatch(delay = 250) {
    if (reserveStatusWatchTimer) {
      return;
    }

    reserveStatusWatchTimer = window.setTimeout(() => {
      reserveStatusWatchTimer = 0;
      handleReserveConnectingState();

      if (shouldContinueReserveStatusWatch()) {
        scheduleReserveStatusWatch(delay);
      }
    }, delay);
  }

  function handleGameStartAfterNativeEvent(wasPlayingMatch, wasPlayableLobby) {
    if (!wasPlayingMatch && wasPlayableLobby && !isGameStartPageFocused() && isPlayingMatch()) {
      clearGameStartWatchTimer();
      clearGameStartIndicatorTimer();
      showGameStartIndicator('started');
      return;
    }

    updateGameStartIndicator();
  }

  function installReserveSocketCaptureHook() {
    if (reserveSocketHookInstalled) {
      return;
    }

    reserveSocketHookInstalled = true;

    const patchSocket = socket => {
      if (!socket) {
        return socket;
      }

      if (socket.__qolboxReservePatched || typeof socket.emit !== 'function') {
        return socket;
      }

      const nativeEmit = socket.emit;
      socket.emit = function wrappedReserveEmit(eventName, ...args) {
        if (getReserveJoinPayload(args)) {
          captureReserveJoin(this, eventName, args);
        }

        return nativeEmit.call(this, eventName, ...args);
      };
      socket.__qolboxReservePatched = true;
      socket.__qolboxReserveOriginalEmit = nativeEmit;
      return socket;
    };

    const patchSocketPrototype = ioFactory => {
      const prototype = ioFactory && ioFactory.Socket && ioFactory.Socket.prototype;
      if (!prototype) {
        return;
      }

      if (prototype.__qolboxReservePatched || typeof prototype.emit !== 'function') {
        return;
      }

      const nativeEmit = prototype.emit;
      prototype.emit = function wrappedReservePrototypeEmit(eventName, ...args) {
        if (getReserveJoinPayload(args)) {
          captureReserveJoin(this, eventName, args);
        }

        return nativeEmit.call(this, eventName, ...args);
      };
      prototype.__qolboxReservePatched = true;
      prototype.__qolboxReserveOriginalEmit = nativeEmit;
    };

    const patchIo = ioFactory => {
      if (typeof ioFactory !== 'function' || ioFactory.__qolboxReservePatched) {
        patchSocketPrototype(ioFactory);
        return ioFactory;
      }

      const wrappedIo = function wrappedReserveIo(...args) {
        return patchSocket(ioFactory.apply(this, args));
      };

      try {
        Object.setPrototypeOf(wrappedIo, Object.getPrototypeOf(ioFactory));
      } catch {
        // Keep the wrapped factory usable even if the browser refuses prototype changes.
      }

      for (const key of Reflect.ownKeys(ioFactory)) {
        try {
          wrappedIo[key] = ioFactory[key];
        } catch {
          // Some function properties are read-only in older browsers.
        }
      }

      wrappedIo.__qolboxReservePatched = true;
      wrappedIo.__qolboxReserveOriginal = ioFactory;
      patchSocketPrototype(wrappedIo);
      return wrappedIo;
    };

    try {
      let ioValue = window.io;
      Object.defineProperty(window, 'io', {
        configurable: true,
        enumerable: true,
        get() {
          return ioValue;
        },
        set(value) {
          ioValue = patchIo(value);
        },
      });

      if (ioValue) {
        window.io = ioValue;
      }
    } catch {
      if (window.io) {
        window.io = patchIo(window.io);
      }
    }
  }

  function getReserveJoinButton() {
    const button = document.querySelector('.roomListContainer .bottomButton.right');
    return isElementVisible(button) ? button : null;
  }

  function getReserveRowFromTarget(target) {
    return target instanceof Element ? target.closest('.roomListContainer .scrollBox tr') : null;
  }

  function getReserveRoomSignature(row) {
    if (!row || !row.cells || !row.cells[0]) {
      return '';
    }

    const roomName = row.cells[0].textContent.trim();
    const lockState = isReservePasswordRoom(row) ? 'locked' : 'open';
    return `${roomName}\n${lockState}`;
  }

  function findReserveRoomBySignature(signature = reserveSelectedRoomSignature) {
    if (!signature) {
      return null;
    }

    return (
      [...document.querySelectorAll('.roomListContainer .scrollBox tr')].find(row => {
        return row.isConnected && getReserveRoomSignature(row) === signature;
      }) || null
    );
  }

  function parseReserveRoomPlayers(row) {
    if (!row || !row.cells || row.cells.length < 2) {
      return null;
    }

    const match = row.cells[1].textContent.trim().match(/^(\d+)\s*\/\s*(\d+)$/);
    if (!match) {
      return null;
    }

    return {
      current: Number(match[1]),
      max: Number(match[2]),
    };
  }

  function isReserveRoomFull(row) {
    const players = parseReserveRoomPlayers(row);
    return Boolean(players && players.max > 0 && players.current >= players.max);
  }

  function isReserveOnePersonRoom(row) {
    const players = parseReserveRoomPlayers(row);
    return Boolean(players && players.max === 1);
  }

  function isReserveUnavailableRoom(row) {
    return Boolean(isReserveRoomFull(row) && isReserveOnePersonRoom(row));
  }

  function isReserveAutoJoinOnePersonRoom() {
    const autoJoin = window.autoJoin;
    if (!autoJoin || typeof autoJoin !== 'object') {
      return false;
    }

    // Current direct-link metadata omits max players, so avoid guessing from a generic room_full error.
    const maxPlayers = Number(autoJoin.maxPlayers || autoJoin.maxplayers || autoJoin.max);
    return Number.isFinite(maxPlayers) && maxPlayers === 1;
  }

  function isReservePasswordRoom(row) {
    return Boolean(row && row.querySelector('img[src*="lock"]'));
  }

  function rememberReserveSelectedRoom(row) {
    if (!row || !row.isConnected) {
      return null;
    }

    reserveSelectedRoomRow = row;
    reserveSelectedRoomSignature = getReserveRoomSignature(row);
    reserveSelectedRoomWasFull = isReserveRoomFull(row);
    reserveSelectedRoomWasUnavailable = isReserveUnavailableRoom(row);
    return row;
  }

  function getReserveSelectedRoomRow() {
    const selected = document.querySelector('.roomListContainer .scrollBox tr.SELECTED');
    if (selected && selected.isConnected) {
      return rememberReserveSelectedRoom(selected);
    }

    if (reserveSelectedRoomRow && reserveSelectedRoomRow.isConnected) {
      return rememberReserveSelectedRoom(reserveSelectedRoomRow);
    }

    const matchingRow = findReserveRoomBySignature();
    if (matchingRow) {
      return rememberReserveSelectedRoom(matchingRow);
    }

    return null;
  }

  function getReserveSelectedRoomState() {
    const row = getReserveSelectedRoomRow();
    if (row) {
      return {
        row,
        full: isReserveRoomFull(row),
        unavailable: isReserveUnavailableRoom(row),
      };
    }

    return {
      row: null,
      full: reserveSelectedRoomWasFull,
      unavailable: reserveSelectedRoomWasUnavailable,
    };
  }

  function syncReserveJoinButtonLabel() {
    const button = getReserveJoinButton();
    if (!button) {
      return;
    }

    if (!shouldRunFeature(FEATURE_RESERVE)) {
      button.dataset.qolboxReserveFull = 'false';
      button.dataset.qolboxReserveUnavailable = 'false';
      button.classList.remove('qolboxReserveUnavailable');
      button.removeAttribute('aria-disabled');
      if (button.textContent.trim() === RESERVE_BUTTON_TEXT) {
        button.textContent = JOIN_BUTTON_TEXT;
      }
      return;
    }

    const selectedState = getReserveSelectedRoomState();
    const shouldReserve = selectedState.full || selectedState.unavailable;
    const isUnavailable = selectedState.unavailable;
    const nextText = shouldReserve ? RESERVE_BUTTON_TEXT : JOIN_BUTTON_TEXT;

    if (button.textContent.trim() !== nextText) {
      button.textContent = nextText;
    }

    button.dataset.qolboxReserveFull = shouldReserve ? 'true' : 'false';
    button.dataset.qolboxReserveUnavailable = isUnavailable ? 'true' : 'false';
    button.classList.toggle('qolboxReserveUnavailable', isUnavailable);
    button.setAttribute('aria-disabled', isUnavailable ? 'true' : 'false');
  }

  function syncReservePasswordPrompt() {
    if (!shouldRunFeature(FEATURE_RESERVE)) {
      reservePasswordPromptPending = false;
      return;
    }

    const container = document.querySelector('.passwordWindowContainer');
    const joinButton = container && container.querySelector('.joinButton');

    if (!isElementVisible(container) || !joinButton) {
      reservePasswordPromptPending = false;
      return;
    }

    if (reservePasswordPromptPending && joinButton.textContent.trim() !== RESERVE_BUTTON_TEXT) {
      joinButton.textContent = RESERVE_BUTTON_TEXT;
    }
  }

  function ensureReserveWaitingWindow() {
    let container = document.getElementById('qolboxReserveWindow');
    if (container) {
      return container;
    }

    container = document.createElement('div');
    container.id = 'qolboxReserveWindow';
    container.className = 'connectingWindowContainer qolboxReserveWindowContainer';
    container.innerHTML = `
      <div class="behindBlocker"></div>
      <div class="connectingWindow">
        <div class="topBar"></div>
        <div class="qolboxReserveContent">
          <div class="spinner" aria-hidden="true"></div>
          <div class="qolboxReserveStatus"></div>
          <div class="qolboxReserveCountdown"></div>
          <div class="qolboxReserveMessage"></div>
        </div>
        <div class="cancelButton">CANCEL</div>
      </div>
    `;

    const cancelButton = container.querySelector('.cancelButton');
    cancelButton.addEventListener('click', () => {
      cancelReserveSpot();
    });

    (document.getElementById('appContainer') || document.body || document.documentElement).appendChild(container);
    return container;
  }

  function getReserveStatusLines() {
    return getNativeConnectingWindows()
      .flatMap(windowElement => {
        const textElement = windowElement.querySelector('.textBox') || windowElement;
        return (textElement.textContent || '').split(/\r?\n/);
      })
      .map(line => line.replace(/\s+/g, ' ').trim())
      .filter(line => {
        return (
          line &&
          !RESERVE_ROOM_FULL_PATTERN.test(line) &&
          !RESERVE_ROOM_CLOSED_PATTERN.test(line) &&
          !RESERVE_WRONG_PASSWORD_PATTERN.test(line) &&
          !/^cancel$/i.test(line) &&
          line !== RESERVE_WAIT_TEXT
        );
      });
  }

  function getReserveNativeMessage(pattern) {
    return (
      getNativeConnectingWindows()
        .flatMap(windowElement => {
          const textElement = windowElement.querySelector('.textBox') || windowElement;
          return (textElement.textContent || '').split(/\r?\n/);
        })
        .map(line => line.replace(/\s+/g, ' ').trim())
        .find(line => line && pattern.test(line)) || ''
    );
  }

  function getReserveStatusText() {
    const statusText = getReserveStatusLines().slice(-2).join(' - ');
    if (statusText) {
      if (reserveState) {
        reserveState.lastStatusText = statusText;
      }

      return statusText;
    }

    return (reserveState && reserveState.lastStatusText) || RESERVE_STATUS_FALLBACK_TEXT;
  }

  function getReserveCountdownText() {
    const nextRetryAt = reserveState && reserveState.nextRetryAt;
    const remainingMs = nextRetryAt ? Math.max(0, nextRetryAt - Date.now()) : RESERVE_RETRY_DELAY_MS;
    return `Retrying in ${(remainingMs / 1000).toFixed(1)} seconds...`;
  }

  function updateReserveWaitingWindow() {
    const container = ensureReserveWaitingWindow();
    const title = container.querySelector('.topBar');
    const spinner = container.querySelector('.spinner');
    const status = container.querySelector('.qolboxReserveStatus');
    const countdown = container.querySelector('.qolboxReserveCountdown');
    const message = container.querySelector('.qolboxReserveMessage');
    const isTerminalMessage = Boolean(reserveState && (reserveState.unavailable || reserveState.terminal));
    const isUnavailable = Boolean(reserveState && reserveState.unavailable);

    if (title) {
      title.textContent = isUnavailable ? RESERVE_UNAVAILABLE_TITLE_TEXT : RESERVE_WAIT_TITLE_TEXT;
    }

    if (spinner) {
      spinner.hidden = isTerminalMessage;
    }

    if (status) {
      status.hidden = isTerminalMessage;
      status.textContent = isTerminalMessage ? '' : getReserveStatusText();
    }

    if (countdown) {
      countdown.hidden = isTerminalMessage;
      countdown.textContent = isTerminalMessage ? '' : getReserveCountdownText();
    }

    if (message) {
      message.hidden = !isTerminalMessage;
      message.textContent = isTerminalMessage ? (reserveState.message || RESERVE_ONE_PERSON_TEXT) : '';
    }
  }

  function getNativeConnectingWindows() {
    return [...document.querySelectorAll('.connectingWindowContainer:not(.qolboxReserveWindowContainer)')];
  }

  function getNativeConnectingText() {
    return getNativeConnectingWindows()
      .map(windowElement => windowElement.textContent || '')
      .join('\n');
  }

  function hideNativeConnectingWindows() {
    for (const windowElement of getNativeConnectingWindows()) {
      windowElement.style.display = 'none';
    }
  }

  function isReserveJoinedRoomFullSuppressed() {
    return Date.now() < reserveJoinedRoomFullSuppressUntil;
  }

  function suppressReserveRoomFullAfterJoin() {
    reserveJoinedRoomFullSuppressUntil = Date.now() + RESERVE_JOINED_ROOM_FULL_SUPPRESS_MS;
  }

  function stopReserveAfterSuccessfulJoin() {
    suppressReserveRoomFullAfterJoin();
    stopReserveSpot({ hideNative: true });
    scheduleReserveStatusWatch();
  }

  function clearReserveCountdownTimer() {
    if (reserveCountdownTimer) {
      window.clearTimeout(reserveCountdownTimer);
      reserveCountdownTimer = 0;
    }
  }

  function scheduleReserveCountdownUpdate() {
    if (reserveCountdownTimer || !reserveState || !reserveState.active) {
      return;
    }

    reserveCountdownTimer = window.setTimeout(() => {
      reserveCountdownTimer = 0;

      if (!reserveState || !reserveState.active) {
        return;
      }

      updateReserveWaitingWindow();
      scheduleReserveCountdownUpdate();
    }, RESERVE_COUNTDOWN_UPDATE_MS);
  }

  function setReserveWaitingVisible(visible) {
    if (document.body) {
      document.body.classList.toggle('qolbox-reserve-active', visible);
    }

    const container = ensureReserveWaitingWindow();
    container.style.display = visible ? 'block' : 'none';
  }

  function clearReserveVisibleRoomSelection() {
    for (const row of document.querySelectorAll('.roomListContainer .scrollBox tr.SELECTED')) {
      row.classList.remove('SELECTED');
    }

    syncReserveJoinButtonLabel();
  }

  function startReserveSpot(reason) {
    if (!shouldRunFeature(FEATURE_RESERVE)) {
      return;
    }

    if (!reserveState || !reserveState.active) {
      reserveState = {
        active: true,
        unavailable: false,
        reason,
        retryTimer: 0,
        nextRetryAt: 0,
        retries: 0,
        capturedJoin: reserveCapturedJoin,
        lastStatusText: '',
      };
    } else {
      reserveState.reason = reserveState.reason || reason;
      reserveState.capturedJoin = reserveState.capturedJoin || reserveCapturedJoin;
      reserveState.unavailable = false;
    }

    updateReserveWaitingWindow();
    setReserveWaitingVisible(true);
    scheduleReserveStatusWatch();
    scheduleReserveCountdownUpdate();
  }

  function stopReserveSpot({ hideNative = false, clearCaptured = true, clearSelection = false } = {}) {
    if (reserveState && reserveState.retryTimer) {
      window.clearTimeout(reserveState.retryTimer);
    }

    if (reserveStatusWatchTimer) {
      window.clearTimeout(reserveStatusWatchTimer);
      reserveStatusWatchTimer = 0;
    }

    clearReserveCountdownTimer();

    if (clearCaptured) {
      reserveCapturedJoin = null;
    }

    reserveState = null;
    reservePasswordPromptPending = false;
    setReserveWaitingVisible(false);

    if (hideNative) {
      hideNativeConnectingWindows();
    }

    if (clearSelection) {
      clearReserveVisibleRoomSelection();
    } else {
      syncReserveJoinButtonLabel();
    }
  }

  function showReserveOnePersonUnavailable(row = null) {
    if (!shouldRunFeature(FEATURE_RESERVE)) {
      return;
    }

    if (row) {
      rememberReserveSelectedRoom(row);
    }

    if (reserveState && reserveState.retryTimer) {
      window.clearTimeout(reserveState.retryTimer);
    }

    if (reserveStatusWatchTimer) {
      window.clearTimeout(reserveStatusWatchTimer);
      reserveStatusWatchTimer = 0;
    }

    clearReserveCountdownTimer();
    reserveCapturedJoin = null;
    reservePasswordPromptPending = false;
    reserveState = {
      active: false,
      unavailable: true,
      reason: 'one-person-room',
      message: RESERVE_ONE_PERSON_TEXT,
    };

    updateReserveWaitingWindow();
    setReserveWaitingVisible(true);
    syncReserveJoinButtonLabel();
  }

  function showReserveTerminalMessage(reason, message) {
    if (!shouldRunFeature(FEATURE_RESERVE)) {
      return;
    }

    if (reserveState && reserveState.retryTimer) {
      window.clearTimeout(reserveState.retryTimer);
    }

    if (reserveStatusWatchTimer) {
      window.clearTimeout(reserveStatusWatchTimer);
      reserveStatusWatchTimer = 0;
    }

    clearReserveCountdownTimer();
    reserveCapturedJoin = null;
    reservePasswordPromptPending = false;
    reserveState = {
      active: false,
      unavailable: false,
      terminal: true,
      reason,
      message: message || RESERVE_STATUS_FALLBACK_TEXT,
    };

    updateReserveWaitingWindow();
    setReserveWaitingVisible(true);
    hideNativeConnectingWindows();
    syncReserveJoinButtonLabel();
  }

  function cancelReserveSpot() {
    if (reserveState && reserveState.unavailable) {
      stopReserveSpot({ clearSelection: true });
      return;
    }

    const cancelButton = getNativeConnectingWindows()
      .map(windowElement => windowElement.querySelector('.cancelButton'))
      .find(Boolean);

    if (cancelButton) {
      cancelButton.click();
    }

    stopReserveSpot();
  }

  function emitReserveJoinAttempt() {
    const captured = (reserveState && reserveState.capturedJoin) || reserveCapturedJoin;
    if (!captured || !captured.socket || typeof captured.socket.emit !== 'function') {
      return false;
    }

    if (!captured.socket.connected && typeof captured.socket.connect === 'function') {
      try {
        captured.socket.connect();
      } catch {
        return false;
      }
    }

    try {
      reserveRetryAudioSuppressUntil = Date.now() + RESERVE_RETRY_AUDIO_SUPPRESS_MS;
      captured.socket.emit(captured.eventName, ...captured.args.map(cloneReserveJoinValue));
      return true;
    } catch {
      return false;
    }
  }

  function scheduleReserveRetry() {
    if (!shouldRunFeature(FEATURE_RESERVE) || !reserveState || !reserveState.active || reserveState.retryTimer) {
      return;
    }

    reserveState.nextRetryAt = Date.now() + RESERVE_RETRY_DELAY_MS;
    updateReserveWaitingWindow();
    scheduleReserveCountdownUpdate();

    reserveState.retryTimer = window.setTimeout(() => {
      if (!reserveState || !reserveState.active) {
        return;
      }

      reserveState.retryTimer = 0;
      reserveState.nextRetryAt = 0;
      updateReserveWaitingWindow();

      if (hasReserveSuccessfulJoinLayer()) {
        stopReserveAfterSuccessfulJoin();
        return;
      }

      if (emitReserveJoinAttempt()) {
        reserveState.retries += 1;
      }

      scheduleReserveRetry();
    }, RESERVE_RETRY_DELAY_MS);
  }

  function handleReserveConnectingState() {
    if (!shouldRunFeature(FEATURE_RESERVE)) {
      if (reserveState) {
        stopReserveSpot();
      }
      return;
    }

    const nativeText = getNativeConnectingText();

    if (
      isReserveJoinedRoomFullSuppressed() &&
      hasReserveSuccessfulJoinLayer() &&
      RESERVE_ROOM_FULL_PATTERN.test(nativeText)
    ) {
      hideNativeConnectingWindows();
      return;
    }

    if (reserveState && reserveState.active && hasReserveSuccessfulJoinLayer()) {
      stopReserveAfterSuccessfulJoin();
      return;
    }

    if (reserveState && reserveState.active && RESERVE_ROOM_CLOSED_PATTERN.test(nativeText)) {
      stopReserveSpot();
      return;
    }

    if (reserveState && reserveState.active && RESERVE_WRONG_PASSWORD_PATTERN.test(nativeText)) {
      showReserveTerminalMessage('wrong-password', getReserveNativeMessage(RESERVE_WRONG_PASSWORD_PATTERN));
      return;
    }

    const canAutoReserve = Boolean((reserveState && reserveState.active) || (reserveCapturedJoin && reserveCapturedJoin.autoReserve));
    if (RESERVE_ROOM_FULL_PATTERN.test(nativeText) && canAutoReserve) {
      if (isReserveAutoJoinOnePersonRoom()) {
        showReserveOnePersonUnavailable();
        hideNativeConnectingWindows();
        return;
      }

      startReserveSpot('room-full');
      scheduleReserveRetry();
    }
  }

  function handleReserveRoomListClick(event) {
    if (!shouldRunFeature(FEATURE_RESERVE)) {
      return;
    }

    const row = getReserveRowFromTarget(event.target);
    const joinButton =
      event.target instanceof Element ? event.target.closest('.roomListContainer .bottomButton.right') : null;

    if (row) {
      rememberReserveSelectedRoom(row);
      window.setTimeout(syncReserveJoinButtonLabel, 0);

      if (isReserveUnavailableRoom(row)) {
        showReserveOnePersonUnavailable(row);

        if (joinButton) {
          event.preventDefault();
          event.stopImmediatePropagation();
        }
      }
    }

    if (!joinButton) {
      return;
    }

    const selectedState = getReserveSelectedRoomState();
    const selectedRow = selectedState.row;
    if (selectedState.unavailable) {
      event.preventDefault();
      event.stopImmediatePropagation();
      showReserveOnePersonUnavailable(selectedRow);
      return;
    }

    if (!selectedState.full) {
      reservePasswordPromptPending = false;
      return;
    }

    if (isReservePasswordRoom(selectedRow)) {
      reservePasswordPromptPending = true;
      window.setTimeout(syncReservePasswordPrompt, 0);
      return;
    }

    startReserveSpot('room-list');
  }

  function handleReserveRoomListDoubleClick(event) {
    if (!shouldRunFeature(FEATURE_RESERVE)) {
      return;
    }

    const row = getReserveRowFromTarget(event.target);
    if (!isReserveRoomFull(row)) {
      return;
    }

    rememberReserveSelectedRoom(row);

    if (isReserveUnavailableRoom(row)) {
      event.preventDefault();
      event.stopImmediatePropagation();
      showReserveOnePersonUnavailable(row);
      return;
    }

    if (isReservePasswordRoom(row)) {
      reservePasswordPromptPending = true;
      window.setTimeout(syncReservePasswordPrompt, 0);
      return;
    }

    startReserveSpot('room-list');
  }

  function handleReservePasswordSubmit(event) {
    if (!shouldRunFeature(FEATURE_RESERVE)) {
      return;
    }

    const submitButton = event.target instanceof Element ? event.target.closest('.passwordWindowContainer .joinButton') : null;
    if (!submitButton || !reservePasswordPromptPending) {
      return;
    }

    if (isReserveUnavailableRoom(getReserveSelectedRoomRow())) {
      event.preventDefault();
      event.stopImmediatePropagation();
      reservePasswordPromptPending = false;
      showReserveOnePersonUnavailable(getReserveSelectedRoomRow());
      return;
    }

    reservePasswordPromptPending = false;
    startReserveSpot('password-room');
  }

  function handleReservePasswordKey(event) {
    if (!shouldRunFeature(FEATURE_RESERVE)) {
      return;
    }

    if (event.key !== 'Enter' || !reservePasswordPromptPending || !isElementVisible(document.querySelector('.passwordWindowContainer'))) {
      return;
    }

    if (isReserveUnavailableRoom(getReserveSelectedRoomRow())) {
      event.preventDefault();
      event.stopImmediatePropagation();
      reservePasswordPromptPending = false;
      showReserveOnePersonUnavailable(getReserveSelectedRoomRow());
      return;
    }

    reservePasswordPromptPending = false;
    startReserveSpot('password-room');
  }

  function patchReserveSpotFeature() {
    if (!shouldRunFeature(FEATURE_RESERVE)) {
      syncReserveJoinButtonLabel();
      return;
    }

    installReserveSocketCaptureHook();
    syncReserveJoinButtonLabel();
    syncReservePasswordPrompt();
    handleReserveConnectingState();

    if (reserveFeatureDomPatched) {
      return;
    }

    reserveFeatureDomPatched = true;
    document.addEventListener('click', handleReserveRoomListClick, true);
    document.addEventListener('dblclick', handleReserveRoomListDoubleClick, true);
    document.addEventListener('click', handleReservePasswordSubmit, true);
    window.addEventListener('keyup', handleReservePasswordKey, true);
  }

  function isMenuGameplayOverlap() {
    return hasVisibleLayer(FULLSCREEN_MENU_LAYER_SELECTOR) && hasVisibleLayer(FULLSCREEN_PLAY_LAYER_SELECTOR);
  }

  function isPageFocused() {
    return !document.hidden && (!document.hasFocus || document.hasFocus());
  }

  function isGameStartPageFocused() {
    return gameStartPageFocused && isPageFocused();
  }

  function installTopLevelGameStartRelay() {
    if (window.top !== window || window.__qolboxGameStartRelayInstalled) {
      return;
    }

    window.__qolboxGameStartRelayInstalled = true;
    let relayActive = false;
    let relayOriginalTitle = '';
    let relayOriginalFavicon = null;
    let relayFaviconLink = null;

    function saveRelayState() {
      if (relayActive) {
        return;
      }

      const link = document.querySelector('link[rel~="icon"]');
      relayOriginalTitle = stripGameStartTitlePrefix(document.title || '');
      relayOriginalFavicon = link
        ? {
            href: link.getAttribute('href'),
            link,
            type: link.getAttribute('type'),
          }
        : { href: null, link: null, type: null };
      relayFaviconLink = link || document.createElement('link');

      if (!link) {
        relayFaviconLink.rel = 'icon';
        (document.head || document.documentElement).appendChild(relayFaviconLink);
      }

      relayActive = true;
    }

    function setRelayFavicon(active) {
      saveRelayState();

      if (!relayFaviconLink) {
        return;
      }

      if (active) {
        relayFaviconLink.setAttribute('href', GAME_START_FAVICON_HREF);
        relayFaviconLink.setAttribute('type', 'image/svg+xml');
        return;
      }

      if (relayOriginalFavicon && relayOriginalFavicon.href) {
        relayFaviconLink.setAttribute('href', relayOriginalFavicon.href);
      } else {
        relayFaviconLink.removeAttribute('href');
      }

      if (relayOriginalFavicon && relayOriginalFavicon.type) {
        relayFaviconLink.setAttribute('type', relayOriginalFavicon.type);
      } else {
        relayFaviconLink.removeAttribute('type');
      }
    }

    function clearRelayState() {
      if (!relayActive) {
        return;
      }

      document.title = relayOriginalTitle;

      if (relayOriginalFavicon && relayFaviconLink) {
        if (!relayOriginalFavicon.link) {
          relayFaviconLink.remove();
        } else {
          setRelayFavicon(false);
        }
      }

      relayActive = false;
      relayOriginalTitle = '';
      relayOriginalFavicon = null;
      relayFaviconLink = null;
    }

    window.addEventListener(
      'message',
      event => {
        if (!/^https:\/\/(www\.)?hitbox\.io$/i.test(event.origin)) {
          return;
        }

        const data = event.data;
        if (!data || data.source !== 'QOLBox' || data.feature !== 'gameStartIndicator') {
          return;
        }

        if (data.action === 'title') {
          saveRelayState();
          document.title = String(data.title || relayOriginalTitle);
        } else if (data.action === 'favicon') {
          setRelayFavicon(Boolean(data.active));
        } else if (data.action === 'clear') {
          clearRelayState();
        }
      },
      true
    );
  }

  function getMultiplayerSession() {
    return window.multiplayerSession && typeof window.multiplayerSession === 'object'
      ? window.multiplayerSession
      : null;
  }

  function getSessionPlayer(session = getMultiplayerSession()) {
    const gameState = session && session.JD;
    const players = gameState && gameState.Pi;
    const playerId = gameState && gameState.vL;

    if (!players || playerId === null || playerId === undefined) {
      return null;
    }

    return players[playerId] || (typeof players.get === 'function' ? players.get(playerId) : null);
  }

  function isCurrentPlayerSpectating(session = getMultiplayerSession()) {
    const player = getSessionPlayer(session);
    const team = Number(player && player.N);
    if (Number.isFinite(team)) {
      return team === 0;
    }

    return hasVisibleLayer('.spectateControls');
  }

  function isSessionLobbyActive(session = getMultiplayerSession()) {
    return Boolean(session && session.TJ && session.TJ.NS && !(session.KR && session.KR.SL));
  }

  function isSessionMatchActive(session = getMultiplayerSession()) {
    return Boolean(session && session.KR && session.KR.SL);
  }

  function isPlayableLobby() {
    const session = getMultiplayerSession();

    if (isSessionMatchActive(session)) {
      return false;
    }

    if (isSessionLobbyActive(session)) {
      return !isCurrentPlayerSpectating(session);
    }

    return (
      hasVisibleLayer('.lobbyContainer') &&
      !hasVisibleLayer('.spectateControls')
    );
  }

  function isPlayingMatch() {
    const session = getMultiplayerSession();

    if (isSessionMatchActive(session)) {
      return !isCurrentPlayerSpectating(session);
    }

    return (
      hasVisibleLayer(FULLSCREEN_GAMEPLAY_LAYER_SELECTOR) &&
      !hasVisibleLayer('.spectateControls')
    );
  }

  function getGameStartTitlePrefix(reason) {
    switch (reason) {
      case 'pulled':
        return GAME_PULLED_TITLE_PREFIX;
      case 'started':
      default:
        return GAME_START_TITLE_PREFIX;
    }
  }

  function getPolledGameStartReason() {
    return gameStartWasInLobbyWhenUnfocused ? 'started' : 'pulled';
  }

  function clearGameStartIndicatorTimer() {
    if (gameStartIndicatorTimer) {
      window.clearTimeout(gameStartIndicatorTimer);
      gameStartIndicatorTimer = 0;
    }
  }

  function clearGameStartWatchTimer() {
    if (gameStartWatchTimer) {
      window.clearTimeout(gameStartWatchTimer);
      gameStartWatchTimer = 0;
    }
  }

  function clearGameStartEndWatchTimer() {
    if (gameStartEndWatchTimer) {
      window.clearTimeout(gameStartEndWatchTimer);
      gameStartEndWatchTimer = 0;
    }
  }

  function clearGameStartFlashTimer() {
    if (gameStartIndicatorFlashTimer) {
      window.clearTimeout(gameStartIndicatorFlashTimer);
      gameStartIndicatorFlashTimer = 0;
    }
  }

  function getFaviconLink() {
    const targetDocument = getGameStartIndicatorDocument();
    return targetDocument.querySelector('link[rel~="icon"]');
  }

  function getGameStartIndicatorDocument() {
    try {
      return window.top && window.top.document ? window.top.document : document;
    } catch {
      return document;
    }
  }

  function shouldPostGameStartIndicatorToTop() {
    if (!window.top || window.top === window) {
      return false;
    }

    try {
      return !window.top.document;
    } catch {
      return true;
    }
  }

  function postGameStartIndicatorToTop(payload) {
    if (!shouldPostGameStartIndicatorToTop()) {
      return;
    }

    try {
      window.top.postMessage(
        {
          ...payload,
          feature: 'gameStartIndicator',
          source: 'QOLBox',
        },
        '*'
      );
    } catch {
      // Cross-origin title relay is best-effort.
    }
  }

  function saveGameStartFavicon() {
    if (gameStartOriginalFavicon) {
      return;
    }

    const targetDocument = getGameStartIndicatorDocument();
    const link = getFaviconLink();
    gameStartOriginalFavicon = link
      ? {
          href: link.getAttribute('href'),
          link,
          type: link.getAttribute('type'),
        }
      : { href: null, link: null, type: null };
    gameStartIndicatorFaviconLink = link || targetDocument.createElement('link');

    if (!link) {
      gameStartIndicatorFaviconLink.rel = 'icon';
      (targetDocument.head || targetDocument.documentElement).appendChild(gameStartIndicatorFaviconLink);
    }
  }

  function setGameStartFavicon(active) {
    saveGameStartFavicon();

    if (!gameStartIndicatorFaviconLink) {
      return;
    }

    if (active) {
      gameStartIndicatorFaviconLink.setAttribute('href', GAME_START_FAVICON_HREF);
      gameStartIndicatorFaviconLink.setAttribute('type', 'image/svg+xml');
      postGameStartIndicatorToTop({ action: 'favicon', active: true });
      return;
    }

    if (gameStartOriginalFavicon && gameStartOriginalFavicon.href) {
      gameStartIndicatorFaviconLink.setAttribute('href', gameStartOriginalFavicon.href);
    } else {
      gameStartIndicatorFaviconLink.removeAttribute('href');
    }

    if (gameStartOriginalFavicon && gameStartOriginalFavicon.type) {
      gameStartIndicatorFaviconLink.setAttribute('type', gameStartOriginalFavicon.type);
    } else {
      gameStartIndicatorFaviconLink.removeAttribute('type');
    }

    postGameStartIndicatorToTop({ action: 'favicon', active: false });
  }

  function restoreGameStartFavicon() {
    if (!gameStartOriginalFavicon || !gameStartIndicatorFaviconLink) {
      return;
    }

    if (!gameStartOriginalFavicon.link) {
      gameStartIndicatorFaviconLink.remove();
    } else {
      setGameStartFavicon(false);
    }

    gameStartIndicatorFaviconLink = null;
    gameStartOriginalFavicon = null;
  }

  function stripGameStartTitlePrefix(title) {
    for (const prefix of GAME_START_TITLE_PREFIXES) {
      if (title && title.startsWith(prefix)) {
        return title.slice(prefix.length);
      }
    }

    return title;
  }

  function getGameStartTitle() {
    return getGameStartIndicatorDocument().title || '';
  }

  function setGameStartTitle(title) {
    getGameStartIndicatorDocument().title = title;
    postGameStartIndicatorToTop({ action: 'title', title });
  }

  function flashGameStartIndicator() {
    if (!gameStartIndicatorActive) {
      return;
    }

    gameStartIndicatorFlashOn = !gameStartIndicatorFlashOn;
    setGameStartTitle(`${getGameStartTitlePrefix(gameStartIndicatorReason)}${gameStartOriginalTitle}`);
    setGameStartFavicon(gameStartIndicatorFlashOn);
    gameStartIndicatorFlashTimer = window.setTimeout(flashGameStartIndicator, GAME_START_FLASH_INTERVAL_MS);
  }

  function scheduleGameStartEndWatch() {
    if (!gameStartIndicatorActive || gameStartEndWatchTimer) {
      return;
    }

    gameStartEndWatchTimer = window.setTimeout(() => {
      gameStartEndWatchTimer = 0;

      if (!gameStartIndicatorActive) {
        return;
      }

      if (!isPlayingMatch()) {
        gameStartWasPlayingWhenUnfocused = false;
        gameStartWasInLobbyWhenUnfocused = isPlayableLobby();
        clearGameStartIndicator();

        if (!isGameStartPageFocused()) {
          scheduleGameStartWatch();
        }

        return;
      }

      scheduleGameStartEndWatch();
    }, GAME_START_END_WATCH_INTERVAL_MS);
  }

  function showGameStartIndicator(reason = 'started') {
    if (!shouldRunFeature(FEATURE_GAME_START_ALERT)) {
      return;
    }

    if (gameStartIndicatorActive) {
      scheduleGameStartEndWatch();
      return;
    }

    gameStartIndicatorReason = reason;
    gameStartOriginalTitle = stripGameStartTitlePrefix(getGameStartTitle());
    gameStartIndicatorActive = true;
    gameStartIndicatorFlashOn = false;
    clearGameStartFlashTimer();
    flashGameStartIndicator();
    scheduleGameStartEndWatch();
  }

  function clearGameStartIndicator() {
    clearGameStartIndicatorTimer();
    clearGameStartEndWatchTimer();
    clearGameStartFlashTimer();

    if (!gameStartIndicatorActive) {
      return;
    }

    setGameStartTitle(gameStartOriginalTitle);
    restoreGameStartFavicon();
    postGameStartIndicatorToTop({ action: 'clear' });
    gameStartOriginalTitle = '';
    gameStartIndicatorFlashOn = false;
    gameStartIndicatorReason = 'started';
    gameStartIndicatorActive = false;
  }

  function scheduleGameStartIndicator(reason = 'pulled') {
    if (!shouldRunFeature(FEATURE_GAME_START_ALERT) || gameStartIndicatorTimer || isGameStartPageFocused()) {
      return;
    }

    clearGameStartWatchTimer();
    gameStartIndicatorReason = reason;
    gameStartIndicatorTimer = window.setTimeout(() => {
      gameStartIndicatorTimer = 0;

      if (!isGameStartPageFocused() && !gameStartWasPlayingWhenUnfocused && isPlayingMatch() && !isPlayableLobby()) {
        showGameStartIndicator(gameStartIndicatorReason);
      }
    }, GAME_START_INDICATOR_DELAY_MS);
  }

  function scheduleGameStartWatch() {
    if (
      !shouldRunFeature(FEATURE_GAME_START_ALERT) ||
      gameStartWatchTimer ||
      isGameStartPageFocused() ||
      gameStartIndicatorActive
    ) {
      return;
    }

    gameStartWatchTimer = window.setTimeout(() => {
      gameStartWatchTimer = 0;
      updateGameStartIndicator();

      if (!gameStartIndicatorActive && !isGameStartPageFocused()) {
        scheduleGameStartWatch();
      }
    }, GAME_START_WATCH_INTERVAL_MS);
  }

  function updateGameStartIndicator() {
    if (!shouldRunFeature(FEATURE_GAME_START_ALERT)) {
      gameStartWasPlayingWhenUnfocused = false;
      clearGameStartWatchTimer();
      clearGameStartIndicator();
      return;
    }

    const playingMatch = isPlayingMatch();
    const playableLobby = isPlayableLobby();
    patchMultiplayerSessionGameStartHooks();

    if (isGameStartPageFocused()) {
      gameStartWasPlayingWhenUnfocused = playingMatch;
      gameStartWasInLobbyWhenUnfocused = false;
      return;
    }

    if (playableLobby) {
      gameStartWasPlayingWhenUnfocused = false;
      gameStartWasInLobbyWhenUnfocused = true;
      scheduleGameStartWatch();
      return;
    }

    if (!gameStartWasPlayingWhenUnfocused && playingMatch) {
      scheduleGameStartIndicator(getPolledGameStartReason());
      return;
    }

    if (!playingMatch) {
      gameStartWasPlayingWhenUnfocused = false;
      gameStartWasInLobbyWhenUnfocused = false;
      clearGameStartWatchTimer();
      clearGameStartIndicator();
      scheduleGameStartWatch();
    }
  }

  function patchMultiplayerSessionGameStartHooks(session = getMultiplayerSession()) {
    if (!shouldRunFeature(FEATURE_GAME_START_ALERT) || !session) {
      return;
    }

    if (
      session === gameStartSessionHookTarget &&
      ['KJ', 'ZJ'].every(methodName => typeof session[methodName] !== 'function' || session[methodName].__qolboxWrapped)
    ) {
      return;
    }

    let foundStartHandler = false;

    // Current hitbox.io game-start handlers in the live bundle.
    for (const methodName of ['KJ', 'ZJ']) {
      if (typeof session[methodName] !== 'function') {
        continue;
      }

      foundStartHandler = true;

      if (session[methodName].__qolboxWrapped) {
        continue;
      }

      const originalMethod = session[methodName];
      const wrappedMethod = function wrappedGameStartSessionMethod(...args) {
        const wasPlayingMatch = isPlayingMatch();
        const wasPlayableLobby = isPlayableLobby();
        let result;

        try {
          result = originalMethod.apply(this, args);
        } finally {
          handleGameStartAfterNativeEvent(wasPlayingMatch, wasPlayableLobby);
        }

        return result;
      };

      wrappedMethod.__qolboxWrapped = true;
      wrappedMethod.__qolboxOriginal = originalMethod;
      session[methodName] = wrappedMethod;
    }

    if (foundStartHandler) {
      gameStartSessionHookTarget = session;
    }
  }

  function handleGameStartIndicatorReturn() {
    if (!shouldRunFeature(FEATURE_GAME_START_ALERT)) {
      clearGameStartIndicator();
      return;
    }

    gameStartPageFocused = true;
    clearGameStartWatchTimer();
    clearGameStartIndicator();
    gameStartWasPlayingWhenUnfocused = isPlayingMatch();
    gameStartWasInLobbyWhenUnfocused = false;
  }

  function handleGameStartInteractionFocus() {
    if (shouldRunFeature(FEATURE_GAME_START_ALERT) && !document.hidden) {
      gameStartPageFocused = true;
      gameStartWasPlayingWhenUnfocused = isPlayingMatch();
      gameStartWasInLobbyWhenUnfocused = false;
    }
  }

  function installGameStartIndicatorHooks() {
    if (gameStartIndicatorHooksInstalled) {
      return;
    }

    gameStartIndicatorHooksInstalled = true;
    gameStartPageFocused = isPageFocused();
    document.addEventListener('pointerdown', handleGameStartInteractionFocus, true);
    document.addEventListener('mousedown', handleGameStartInteractionFocus, true);
    document.addEventListener('click', handleGameStartInteractionFocus, true);
    document.addEventListener('keydown', handleGameStartInteractionFocus, true);
    window.addEventListener('focus', handleGameStartIndicatorReturn, true);
    window.addEventListener(
      'blur',
      () => {
        if (!shouldRunFeature(FEATURE_GAME_START_ALERT)) {
          return;
        }

        gameStartPageFocused = false;
        patchMultiplayerSessionGameStartHooks();
        gameStartWasPlayingWhenUnfocused = isPlayingMatch();
        gameStartWasInLobbyWhenUnfocused = !gameStartWasPlayingWhenUnfocused && isPlayableLobby();
        scheduleGameStartWatch();
      },
      true
    );
    document.addEventListener(
      'visibilitychange',
      () => {
        if (!shouldRunFeature(FEATURE_GAME_START_ALERT)) {
          return;
        }

        if (document.hidden) {
          gameStartPageFocused = false;
          patchMultiplayerSessionGameStartHooks();
          gameStartWasPlayingWhenUnfocused = isPlayingMatch();
          gameStartWasInLobbyWhenUnfocused = !gameStartWasPlayingWhenUnfocused && isPlayableLobby();
          scheduleGameStartWatch();
        } else {
          handleGameStartIndicatorReturn();
        }
      },
      true
    );
  }

  function getActiveRenderMode() {
    // During the handoff into a match both layers can exist briefly.
    // Keep using the menu frame until the replay/menu layer is actually gone.
    if (hasVisibleLayer(FULLSCREEN_MENU_LAYER_SELECTOR)) {
      return 'menu';
    }

    if (hasVisibleLayer(FULLSCREEN_EDITOR_LAYER_SELECTOR)) {
      return 'editor';
    }

    if (hasVisibleLayer(FULLSCREEN_GAMEPLAY_LAYER_SELECTOR)) {
      return 'gameplay';
    }

    return 'menu';
  }

  function isEscapeKey(event) {
    return Boolean(event && (event.key === 'Escape' || event.key === 'Esc' || event.code === 'Escape'));
  }

  function isTabKey(event) {
    return Boolean(event && (event.key === 'Tab' || event.code === 'Tab'));
  }

  function isChatInput(element) {
    return Boolean(element instanceof Element && element.matches(CHAT_INPUT_SELECTOR));
  }

  function isLobbyChatInput(element) {
    return Boolean(element instanceof Element && element.matches('.lobbyContainer .chatBox .input'));
  }

  function getActiveChatInput(target = document.activeElement) {
    if (isChatInput(target)) {
      return target;
    }

    if (target instanceof Element) {
      const closestChatInput = target.closest(CHAT_INPUT_SELECTOR);
      if (isChatInput(closestChatInput)) {
        return closestChatInput;
      }
    }

    return document.querySelector('.inGameChat .input:focus, .lobbyContainer .chatBox .input:focus');
  }

  function focusElementWithoutScroll(element) {
    if (!element || typeof element.focus !== 'function') {
      return;
    }

    try {
      element.focus({ preventScroll: true });
    } catch {
      element.focus();
    }
  }

  function keepOutOfBrowserTabOrder(element) {
    if (element) {
      element.tabIndex = -1;
    }
  }

  function keepInBrowserTabOrder(element) {
    if (element) {
      element.tabIndex = 0;
    }
  }

  function resetBrowserScroll() {
    try {
      window.scrollTo(0, 0);
    } catch {
      // Ignore scroll failures in older userscript engines.
    }

    document.documentElement.scrollTop = 0;
    document.body.scrollTop = 0;
  }

  function setJukeboxBottom(jukebox, bottom) {
    if (jukebox) {
      jukebox.style.bottom = bottom;
    }
  }

  function focusActiveRenderCanvas() {
    const canvas = getActiveRenderCanvas();
    if (!canvas) {
      return;
    }

    if (!canvas.hasAttribute('tabindex')) {
      canvas.tabIndex = -1;
    }

    focusElementWithoutScroll(canvas);
  }

  function restoreLobbyChatPrompt(input) {
    if (!isLobbyChatInput(input)) {
      return;
    }

    const chatBox = input.closest('.lobbyContainer .chatBox');
    const instruction = chatBox && chatBox.querySelector('.lowerInstruction');
    if (instruction) {
      instruction.style.visibility = 'inherit';

      if (!(instruction.textContent || '').trim()) {
        instruction.textContent =
          window.a8 && window.a8.xm ? TOUCH_LOBBY_CHAT_PROMPT : DESKTOP_LOBBY_CHAT_PROMPT;
      }
    }

    if (!window.a8 || !window.a8.xm) {
      input.style.pointerEvents = 'none';
    }
  }

  function closeChatInput(input) {
    if (!shouldRunFeature(FEATURE_CHAT)) {
      return false;
    }

    if (!isChatInput(input)) {
      return false;
    }

    const closingLobbyChat = isLobbyChatInput(input);
    input.value = '';
    input.dispatchEvent(new Event('input', { bubbles: true }));
    input.blur();
    input.classList.remove('bgActive');

    if (closingLobbyChat) {
      restoreLobbyChatPrompt(input);
    } else {
      focusActiveRenderCanvas();
    }

    return true;
  }

  function handleChatEscape(event) {
    if (!shouldRunFeature(FEATURE_CHAT) || !isEscapeKey(event)) {
      return;
    }

    const input = getActiveChatInput(event.target);
    const suppressingKeyup = event.type === 'keyup' && Date.now() < suppressEscapeKeyUntil;
    if (!input && !suppressingKeyup) {
      return;
    }

    event.preventDefault();
    event.stopPropagation();
    event.stopImmediatePropagation();

    if (event.type === 'keydown' && input) {
      suppressEscapeKeyUntil = Date.now() + 500;
      closeChatInput(input);
    }
  }

  function installChatEscapeHooks() {
    if (chatEscapeHooksInstalled) {
      return;
    }

    chatEscapeHooksInstalled = true;
    window.addEventListener('keydown', handleChatEscape, true);
    window.addEventListener('keyup', handleChatEscape, true);
    document.addEventListener('keydown', handleChatEscape, true);
    document.addEventListener('keyup', handleChatEscape, true);
  }

  function patchChatTabOrder() {
    if (!shouldRunFeature(FEATURE_CHAT)) {
      return;
    }

    // Browser Tab focus bypasses the game's native chat-open path; Enter still focuses chat normally.
    for (const input of document.querySelectorAll(CHAT_INPUT_SELECTOR)) {
      keepOutOfBrowserTabOrder(input);
    }
  }

  function openJukeboxFromKeyboardFocus(jukebox) {
    if (!shouldRunFeature(FEATURE_AUDIO) || !jukebox) {
      return;
    }

    resetBrowserScroll();
    setJukeboxBottom(jukebox, '0px');

    if (typeof jukebox.onmouseenter === 'function') {
      jukebox.onmouseenter();
    } else {
      setJukeboxBottom(jukebox, '0px');
    }

    scheduleUiWork({ force: true, passes: RESIZE_SETTLE_PASSES });
  }

  function closeJukeboxFromKeyboardFocus(jukebox, nextFocusTarget) {
    if (
      !shouldRunFeature(FEATURE_AUDIO) ||
      !jukebox ||
      (nextFocusTarget instanceof Element && jukebox.contains(nextFocusTarget)) ||
      jukebox.matches(':hover')
    ) {
      return;
    }

    if (typeof jukebox.onmouseleave === 'function') {
      jukebox.onmouseleave();
    } else {
      setJukeboxBottom(jukebox, '-50px');
    }
  }

  function focusJukeboxKnobFromTab(knob) {
    if (!shouldRunFeature(FEATURE_AUDIO)) {
      return false;
    }

    const jukebox = knob && knob.closest('.jukebox');
    if (!jukebox) {
      return false;
    }

    openJukeboxFromKeyboardFocus(jukebox);
    focusElementWithoutScroll(knob);
    resetBrowserScroll();
    return true;
  }

  function isGameplayTabFocusContext(target, knob) {
    const activeCanvas = getActiveRenderCanvas();
    return (
      target === window ||
      target === document ||
      target === document.body ||
      target === document.documentElement ||
      target === activeCanvas ||
      target === knob
    );
  }

  function handleGameplayTabFocus(event) {
    if (
      !shouldRunFeature(FEATURE_AUDIO) ||
      !isTabKey(event) ||
      event.altKey ||
      event.ctrlKey ||
      event.metaKey ||
      isChatInput(event.target) ||
      getActiveRenderMode() !== 'gameplay'
    ) {
      return;
    }

    const knob = findJukeboxKnob();
    const jukebox = knob && knob.closest('.jukebox');
    if (!knob || !jukebox || !isElementVisible(jukebox) || !isGameplayTabFocusContext(event.target, knob)) {
      return;
    }

    event.preventDefault();

    if (document.activeElement === knob) {
      focusActiveRenderCanvas();
      closeJukeboxFromKeyboardFocus(jukebox, document.activeElement);
      return;
    }

    focusJukeboxKnobFromTab(knob);
  }

  function installTabFocusHooks() {
    if (tabFocusHooksInstalled) {
      return;
    }

    tabFocusHooksInstalled = true;
    window.addEventListener('keydown', handleGameplayTabFocus, true);
  }

  function patchJukeboxKeyboardFocus(knob) {
    if (!shouldRunFeature(FEATURE_AUDIO)) {
      return;
    }

    const jukebox = knob && knob.closest('.jukebox');
    if (!jukebox || jukebox.dataset.qolboxKeyboardFocusPatched) {
      return;
    }

    jukebox.dataset.qolboxKeyboardFocusPatched = 'true';
    jukebox.addEventListener('focusin', () => openJukeboxFromKeyboardFocus(jukebox), true);
    jukebox.addEventListener(
      'focusout',
      event => closeJukeboxFromKeyboardFocus(jukebox, event.relatedTarget),
      true
    );
  }

  function getLobbyMusicController() {
    const game = window.a8;
    return game && game.cR && typeof game.cR === 'object' ? game.cR : null;
  }

  function isLobbyMusicAllowed() {
    return !shouldRunFeature(FEATURE_AUDIO) || !hasVisibleLayer(FULLSCREEN_PLAY_LAYER_SELECTOR);
  }

  function stopLobbyMusicIfNeeded() {
    if (!shouldRunFeature(FEATURE_AUDIO) || isLobbyMusicAllowed()) {
      return;
    }

    const controller = getLobbyMusicController();
    if (!controller || typeof controller.stop !== 'function') {
      return;
    }

    try {
      controller.stop();
    } catch {
      // Ignore half-initialized audio controllers while the game is transitioning.
    }
  }

  function patchLobbyMusicController() {
    if (!shouldRunFeature(FEATURE_AUDIO) && !lobbyMusicPatchInstalled) {
      return false;
    }

    const controller = getLobbyMusicController();
    if (!controller || typeof controller.start !== 'function') {
      return false;
    }

    if (!lobbyMusicPatchInstalled || !controller.start.__qolboxWrapped) {
      const originalStart = controller.start;
      const wrappedStart = function (...args) {
        if (isLobbyMusicAllowed()) {
          return originalStart.apply(this, args);
        }

        if (typeof this.stop === 'function') {
          try {
            this.stop();
          } catch {
            // Ignore stop failures from partially initialized lobby music.
          }
        }

        return undefined;
      };

      wrappedStart.__qolboxWrapped = true;
      wrappedStart.__qolboxOriginal = originalStart;
      controller.start = wrappedStart;
      lobbyMusicPatchInstalled = true;
    }

    stopLobbyMusicIfNeeded();
    return true;
  }

  function getModeInsets(mode, viewport) {
    if (mode === 'gameplay' || mode === 'editor') {
      return {
        left: GAMEPLAY_SAFE_SIDE_PX,
        right: GAMEPLAY_SAFE_SIDE_PX,
        top: GAMEPLAY_SAFE_TOP_PX,
        bottom: GAMEPLAY_SAFE_BOTTOM_PX,
      };
    }

    return {
      left: MENU_FRAME_PADDING_PX,
      right: MENU_FRAME_PADDING_PX,
      top: MENU_FRAME_PADDING_PX,
      bottom: MENU_FRAME_PADDING_PX,
    };
  }

  function getFullscreenDimensions(viewport = getViewportSize(), mode = getActiveRenderMode()) {
    const base = getBaseGameSize();
    const insets = getModeInsets(mode, viewport);
    const availableWidth = Math.max(1, viewport.width - insets.left - insets.right);
    const availableHeight = Math.max(1, viewport.height - insets.top - insets.bottom);
    const scale = Math.max(0.01, Math.min(availableWidth / base.width, availableHeight / base.height));
    const width = Math.max(1, Math.round(base.width * scale));
    const height = Math.max(1, Math.round(base.height * scale));
    const left = insets.left + Math.max(0, Math.floor((availableWidth - width) / 2));
    const top = insets.top + Math.max(0, Math.floor((availableHeight - height) / 2));

    return {
      viewportWidth: viewport.width,
      viewportHeight: viewport.height,
      baseWidth: base.width,
      baseHeight: base.height,
      width,
      height,
      scale,
      left,
      top,
      shellLeft: 0,
      shellTop: 0,
      shellWidth: viewport.width,
      shellHeight: viewport.height,
      insets,
      mode,
    };
  }

  function getNativeUiZoom(dimensions = getFullscreenDimensions()) {
    return Math.min(1, dimensions.width / 1400);
  }

  function getPinnedFullscreenDimensions(game = window.a8) {
    return (game && game.__qolboxPinnedDimensions) || getFullscreenDimensions();
  }

  function getRelativeContainerBounds(dimensions = getFullscreenDimensions()) {
    return {
      left: dimensions.left,
      top: dimensions.top,
      width: dimensions.width,
      height: dimensions.height,
    };
  }

  function getExpectedBackingSize(dimensions = getFullscreenDimensions()) {
    const pixelRatio = Math.max(1, Number(window.devicePixelRatio) || 1);
    return {
      width: Math.max(1, Math.round(dimensions.width * pixelRatio)),
      height: Math.max(1, Math.round(dimensions.height * pixelRatio)),
    };
  }

  function isLoadingScreenVisible() {
    const loading = document.getElementById('ccLoading');
    if (!loading || !loading.isConnected) {
      return false;
    }

    const style = window.getComputedStyle(loading);
    return style.display !== 'none' && style.visibility !== 'hidden' && style.opacity !== '0';
  }

  function resetScorePanelLayout(scorePanel) {
    for (const property of [
      'position',
      'left',
      'top',
      'right',
      'bottom',
      'transform',
      'text-align',
      'margin-top',
      'z-index',
    ]) {
      scorePanel.style.removeProperty(property);
    }
  }

  function resetSpectateControlsLayout(spectateControls) {
    for (const property of ['position', 'left', 'right', 'top', 'bottom', 'transform', 'margin', 'z-index']) {
      spectateControls.style.removeProperty(property);
    }
  }

  function parseCssRgbColor(value) {
    if (typeof value !== 'string') {
      return null;
    }

    const match = value.match(
      /^rgba?\(\s*(\d+(?:\.\d+)?)\s*,\s*(\d+(?:\.\d+)?)\s*,\s*(\d+(?:\.\d+)?)(?:\s*,\s*(\d+(?:\.\d+)?))?\s*\)$/i
    );
    if (!match) {
      return null;
    }

    return {
      red: Math.max(0, Math.min(255, Math.round(Number(match[1])))),
      green: Math.max(0, Math.min(255, Math.round(Number(match[2])))),
      blue: Math.max(0, Math.min(255, Math.round(Number(match[3])))),
      alpha: match[4] === undefined ? 1 : Math.max(0, Math.min(1, Number(match[4]))),
    };
  }

  function parseNumericRgbColor(value) {
    const color = Number(value);
    if (!Number.isFinite(color) || color < 0 || color > 0xffffff) {
      return null;
    }

    return {
      red: (color >> 16) & 255,
      green: (color >> 8) & 255,
      blue: color & 255,
      alpha: 1,
    };
  }

  function parseHexRgbColor(value) {
    if (typeof value !== 'string') {
      return null;
    }

    const normalized = value.trim().replace(/^#|^0x/i, '');
    if (!/^[0-9a-f]{6}$/i.test(normalized)) {
      return null;
    }

    return parseNumericRgbColor(Number.parseInt(normalized, 16));
  }

  function colorsMatch(left, right) {
    return Boolean(
      left &&
        right &&
        left.red === right.red &&
        left.green === right.green &&
        left.blue === right.blue
    );
  }

  function isFallbackScoreRowColor(color) {
    return colorsMatch(color, SCORE_ROW_FALLBACK_RGB);
  }

  function getPlayerScoreColor(player) {
    if (!player || typeof player !== 'object') {
      return null;
    }

    for (const [key, value] of Object.entries(player)) {
      if (!/(colou?r|color|fill|tint)/i.test(key)) {
        continue;
      }

      const parsed =
        typeof value === 'number'
          ? parseNumericRgbColor(value)
          : parseCssRgbColor(value) || parseHexRgbColor(value);
      if (parsed) {
        return parsed;
      }
    }

    return TEAM_SCORE_COLORS.get(Number(player.N)) || null;
  }

  function getPlayerDisplayName(player) {
    if (!player || typeof player !== 'object') {
      return '';
    }

    for (const key of ['name', 'Nm', 'username', 'playerName']) {
      const value = player[key];
      if (typeof value === 'string' && value.trim()) {
        return value.trim();
      }
    }

    return '';
  }

  function normalizeScoreName(value) {
    return String(value || '')
      .replace(/\s+/g, ' ')
      .trim()
      .toLowerCase();
  }

  function getScoreRowName(row) {
    const nameElement = row && row.querySelector && row.querySelector('.name');
    return normalizeScoreName(nameElement ? nameElement.textContent : row && row.textContent);
  }

  function getScorePlayers() {
    const session = getMultiplayerSession();
    const players = session && session.KR && session.KR.uL ? session.KR.uL.Ho : null;
    return Array.isArray(players) ? players.filter(Boolean) : [];
  }

  function syncScoreRowsFromPlayers(scorePanel) {
    const rows = Array.from(scorePanel.querySelectorAll('.entryContainer'));
    const players = getScorePlayers();
    if (!rows.length || !players.length) {
      return false;
    }

    const playersByName = new Map();
    for (const player of players) {
      const name = normalizeScoreName(getPlayerDisplayName(player));
      if (name) {
        playersByName.set(name, player);
      }
    }

    let changed = false;
    rows.forEach((row, index) => {
      const inlineColor = parseCssRgbColor(row.style.backgroundColor);
      const computedColor = parseCssRgbColor(window.getComputedStyle(row).backgroundColor);
      const player = playersByName.get(getScoreRowName(row)) || players[index];
      const playerColor = getPlayerScoreColor(player);

      if (!playerColor || (inlineColor && !isFallbackScoreRowColor(inlineColor))) {
        return;
      }

      if (!inlineColor && computedColor && !isFallbackScoreRowColor(computedColor)) {
        return;
      }

      setImportantStyle(row, 'background-color', `rgb(${playerColor.red}, ${playerColor.green}, ${playerColor.blue})`);
      changed = true;
    });

    return changed;
  }

  function makeScoreRowsOpaque(scorePanel) {
    for (const row of scorePanel.querySelectorAll('.entryContainer')) {
      const inlineColor = parseCssRgbColor(row.style.backgroundColor);
      const computedColor = parseCssRgbColor(window.getComputedStyle(row).backgroundColor);
      const parsedColor = inlineColor || computedColor;
      if (!parsedColor || parsedColor.alpha >= 1) {
        continue;
      }

      // The vanilla CSS fallback is red; locking that in before the game fills player colors makes every pill red.
      if (!inlineColor && isFallbackScoreRowColor(parsedColor)) {
        continue;
      }

      setImportantStyle(
        row,
        'background-color',
        `rgb(${parsedColor.red}, ${parsedColor.green}, ${parsedColor.blue})`
      );
    }
  }

  function layoutRelativeHud(relativeBounds, dimensions) {
    const isLoading = isLoadingScreenVisible();
    const useGameplayHudLayout = dimensions.mode === 'gameplay' && !isLoading;

    for (const scorePanel of document.querySelectorAll('.scores')) {
      if (!useGameplayHudLayout) {
        resetScorePanelLayout(scorePanel);
        setImportantStyle(scorePanel, 'display', 'none');
        continue;
      }

      syncScoreRowsFromPlayers(scorePanel);
      makeScoreRowsOpaque(scorePanel);

      setImportantStyle(scorePanel, 'display', 'block');
      setImportantStyle(scorePanel, 'position', 'absolute');
      setImportantStyle(scorePanel, 'left', '50%');
      setImportantStyle(scorePanel, 'top', '12px');
      setImportantStyle(scorePanel, 'right', 'auto');
      setImportantStyle(scorePanel, 'bottom', 'auto');
      setImportantStyle(scorePanel, 'transform', 'translateX(-50%)');
      setImportantStyle(scorePanel, 'text-align', 'center');
      setImportantStyle(scorePanel, 'margin-top', '0');
      setImportantStyle(scorePanel, 'z-index', '10');
    }

    for (const spectateControls of document.querySelectorAll('.spectateControls')) {
      if (!useGameplayHudLayout) {
        resetSpectateControlsLayout(spectateControls);
        continue;
      }

      setImportantStyle(spectateControls, 'position', 'absolute');
      setImportantStyle(spectateControls, 'left', '50%');
      setImportantStyle(spectateControls, 'right', 'auto');
      setImportantStyle(spectateControls, 'top', 'auto');
      setImportantStyle(spectateControls, 'bottom', '12px');
      setImportantStyle(spectateControls, 'transform', 'translateX(-50%)');
      setImportantStyle(spectateControls, 'margin', '0');
      setImportantStyle(spectateControls, 'z-index', '11');
    }
  }

  function getEditorNativeSize(editorLayer) {
    const canvas = editorLayer && editorLayer.querySelector('canvas');
    const canvasWidth = Number(canvas && canvas.width);
    const canvasHeight = Number(canvas && canvas.height);
    const base = getBaseGameSize();

    return {
      width: Number.isFinite(canvasWidth) && canvasWidth > 0 ? canvasWidth : base.width,
      height: Number.isFinite(canvasHeight) && canvasHeight > 0 ? canvasHeight : base.height,
    };
  }

  // The editor renderer and its DOM toolbars share native canvas coordinates; scale them together to keep pointer math and menus aligned.
  function getScaledEditorFrame(editorLayer, dimensions = getFullscreenDimensions(undefined, 'editor')) {
    const nativeSize = getEditorNativeSize(editorLayer);
    const scale = Math.max(
      0.01,
      Math.min(dimensions.width / nativeSize.width, dimensions.height / nativeSize.height)
    );
    const visualWidth = Math.max(1, Math.round(nativeSize.width * scale));
    const visualHeight = Math.max(1, Math.round(nativeSize.height * scale));

    return {
      left: dimensions.left + Math.max(0, Math.floor((dimensions.width - visualWidth) / 2)),
      top: dimensions.top + Math.max(0, Math.floor((dimensions.height - visualHeight) / 2)),
      width: nativeSize.width,
      height: nativeSize.height,
      scale,
      visualWidth,
      visualHeight,
    };
  }

  function fitEditorCanvasToNative(canvas, frame) {
    if (!canvas || !frame) {
      return;
    }

    setImportantStyle(canvas, 'position', 'absolute');
    setImportantStyle(canvas, 'left', '0');
    setImportantStyle(canvas, 'top', '0');
    setImportantStyle(canvas, 'right', 'auto');
    setImportantStyle(canvas, 'bottom', 'auto');
    setImportantStyle(canvas, 'width', `${frame.width}px`);
    setImportantStyle(canvas, 'height', `${frame.height}px`);
    setImportantStyle(canvas, 'max-width', 'none');
    setImportantStyle(canvas, 'max-height', 'none');
    setImportantStyle(canvas, 'transform', 'none');
  }

  function fitEditorLayerToFrame(layer, dimensions = getFullscreenDimensions(undefined, 'editor')) {
    if (!layer || !(layer instanceof Element)) {
      return null;
    }

    const frame = getScaledEditorFrame(layer, dimensions);

    setImportantStyle(layer, 'position', 'absolute');
    setImportantStyle(layer, 'left', `${frame.left}px`);
    setImportantStyle(layer, 'top', `${frame.top}px`);
    setImportantStyle(layer, 'right', 'auto');
    setImportantStyle(layer, 'bottom', 'auto');
    setImportantStyle(layer, 'width', `${frame.width}px`);
    setImportantStyle(layer, 'height', `${frame.height}px`);
    setImportantStyle(layer, 'max-width', 'none');
    setImportantStyle(layer, 'max-height', 'none');
    setImportantStyle(layer, 'overflow', 'visible');
    setImportantStyle(layer, 'transform', `scale(${frame.scale})`);
    setImportantStyle(layer, 'transform-origin', 'top left');
    setImportantStyle(layer, 'zoom', '1');
    layer.dataset.qolboxEditorNativeWidth = String(frame.width);
    layer.dataset.qolboxEditorNativeHeight = String(frame.height);
    layer.dataset.qolboxEditorScale = String(frame.scale);

    const canvas = layer.querySelector('canvas');
    if (canvas) {
      fitEditorCanvasToNative(canvas, frame);
    }

    return frame;
  }

  function enforceFullscreenLayout(dimensions = getFullscreenDimensions()) {
    ensureGlobalStyle();
    const menuDimensions =
      dimensions.mode === 'menu' ? dimensions : getFullscreenDimensions(undefined, 'menu');
    const playDimensions =
      dimensions.mode === 'gameplay' || dimensions.mode === 'editor'
        ? dimensions
        : getFullscreenDimensions(undefined, 'gameplay');
    const activeDimensions =
      dimensions.mode === 'gameplay' || dimensions.mode === 'editor' ? playDimensions : menuDimensions;
    const relativeBounds = getRelativeContainerBounds(activeDimensions);

    setImportantStyle(document.documentElement, 'overflow', 'hidden');
    setImportantStyle(document.body, 'overflow', 'hidden');
    setImportantStyle(document.body, 'margin', '0');
    setImportantStyle(document.body, 'background-color', '#0a0a0a');

    const appContainer = document.getElementById('appContainer');
    if (appContainer) {
      setImportantStyle(appContainer, 'position', 'fixed');
      setImportantStyle(appContainer, 'left', `${activeDimensions.shellLeft}px`);
      setImportantStyle(appContainer, 'top', `${activeDimensions.shellTop}px`);
      setImportantStyle(appContainer, 'right', 'auto');
      setImportantStyle(appContainer, 'bottom', 'auto');
      setImportantStyle(appContainer, 'margin', '0');
      setImportantStyle(appContainer, 'width', `${activeDimensions.shellWidth}px`);
      setImportantStyle(appContainer, 'height', `${activeDimensions.shellHeight}px`);
      setImportantStyle(appContainer, 'max-width', 'none');
      setImportantStyle(appContainer, 'max-height', 'none');
      setImportantStyle(appContainer, 'border', '0');
      setImportantStyle(appContainer, 'overflow', 'hidden');
    }

    const relativeContainer = document.getElementById('relativeContainer');
    if (relativeContainer) {
      setImportantStyle(relativeContainer, 'position', 'fixed');
      setImportantStyle(relativeContainer, 'left', `${relativeBounds.left}px`);
      setImportantStyle(relativeContainer, 'top', `${relativeBounds.top}px`);
      setImportantStyle(relativeContainer, 'right', 'auto');
      setImportantStyle(relativeContainer, 'bottom', 'auto');
      setImportantStyle(relativeContainer, 'margin', '0');
      setImportantStyle(relativeContainer, 'width', `${relativeBounds.width}px`);
      setImportantStyle(relativeContainer, 'height', `${relativeBounds.height}px`);
      setImportantStyle(relativeContainer, 'overflow', 'visible');
    }

    const backgroundImage = document.getElementById('backgroundImage');
    if (backgroundImage) {
      setImportantStyle(backgroundImage, 'position', 'fixed');
      setImportantStyle(backgroundImage, 'left', '0');
      setImportantStyle(backgroundImage, 'top', '0');
      setImportantStyle(backgroundImage, 'right', 'auto');
      setImportantStyle(backgroundImage, 'bottom', 'auto');
      setImportantStyle(backgroundImage, 'width', `${dimensions.viewportWidth}px`);
      setImportantStyle(backgroundImage, 'height', `${dimensions.viewportHeight}px`);
    }

    for (const layer of document.querySelectorAll(FULLSCREEN_RENDER_LAYER_SELECTOR)) {
      if (isEditorLayer(layer)) {
        fitEditorLayerToFrame(layer, activeDimensions);
        continue;
      }

      setImportantStyle(layer, 'position', 'absolute');
      setImportantStyle(layer, 'left', `${activeDimensions.left}px`);
      setImportantStyle(layer, 'top', `${activeDimensions.top}px`);
      setImportantStyle(layer, 'right', 'auto');
      setImportantStyle(layer, 'bottom', 'auto');
      setImportantStyle(layer, 'width', `${activeDimensions.width}px`);
      setImportantStyle(layer, 'height', `${activeDimensions.height}px`);
      setImportantStyle(layer, 'max-width', 'none');
      setImportantStyle(layer, 'max-height', 'none');
      setImportantStyle(layer, 'overflow', 'hidden');
      setImportantStyle(layer, 'transform', 'none');
      setImportantStyle(layer, 'zoom', '1');
    }

    for (const canvas of document.querySelectorAll(FULLSCREEN_RENDER_CANVAS_SELECTOR)) {
      if (isEditorCanvas(canvas)) {
        const editorLayer = canvas.parentElement;
        const frame = getScaledEditorFrame(editorLayer, activeDimensions);
        fitEditorCanvasToNative(canvas, frame);
        continue;
      }

      setImportantStyle(canvas, 'position', 'absolute');
      setImportantStyle(canvas, 'left', '0');
      setImportantStyle(canvas, 'top', '0');
      setImportantStyle(canvas, 'right', 'auto');
      setImportantStyle(canvas, 'bottom', 'auto');
      setImportantStyle(canvas, 'width', `${activeDimensions.width}px`);
      setImportantStyle(canvas, 'height', `${activeDimensions.height}px`);
      setImportantStyle(canvas, 'max-width', 'none');
      setImportantStyle(canvas, 'max-height', 'none');
      setImportantStyle(canvas, 'transform', 'none');
    }

    const uiZoom = String(getNativeUiZoom(activeDimensions));
    for (const overlay of document.querySelectorAll('.inGameCSS')) {
      setImportantStyle(overlay, 'zoom', uiZoom);
      setImportantStyle(overlay, 'transform-origin', 'top left');
    }

    layoutRelativeHud(relativeBounds, activeDimensions);
    return true;
  }

  function setNativeFullscreenSize(dimensions = getFullscreenDimensions()) {
    const game = window.a8;
    if (!game) {
      return false;
    }

    game.__qolboxPinnedDimensions = dimensions;
    installNativeMetricOverride(game);

    game._P = dimensions.scale;
    game.lg = dimensions.width;
    game.ug = dimensions.height;

    if ('Qp' in game) {
      game.Qp = getNativeUiZoom(dimensions);
    }

    if (typeof game.PP === 'function') {
      try {
        game.PP();
      } catch {
        // Ignore intermediate layout failures while the game is booting.
      }
    }

    return true;
  }

  function installNativeMetricOverride(game = window.a8) {
    if (!game || game.__qolboxMetricOverrideInstalled) {
      return Boolean(game);
    }

    const metricNames = ['_P', 'Qp', 'lg', 'ug'];
    game.__qolboxMetricOriginals = {};
    for (const metricName of metricNames) {
      game.__qolboxMetricOriginals[metricName] = {
        descriptor: Object.getOwnPropertyDescriptor(game, metricName) || null,
      };
    }

    const makeMetricAccessor = getter => ({
      configurable: true,
      enumerable: true,
      get: getter,
      set: () => {
        // Ignore native writes and keep fullscreen metrics authoritative.
      },
    });

    try {
      Object.defineProperty(game, '_P', makeMetricAccessor(() => getPinnedFullscreenDimensions(game).scale));
      Object.defineProperty(
        game,
        'Qp',
        makeMetricAccessor(() => getNativeUiZoom(getPinnedFullscreenDimensions(game)))
      );
      Object.defineProperty(game, 'lg', makeMetricAccessor(() => getPinnedFullscreenDimensions(game).width));
      Object.defineProperty(
        game,
        'ug',
        makeMetricAccessor(() => getPinnedFullscreenDimensions(game).height)
      );
      game.__qolboxMetricOverrideInstalled = true;
      return true;
    } catch {
      return false;
    }
  }

  function restoreNativeMetricOverride(game = window.a8) {
    if (!game || !game.__qolboxMetricOverrideInstalled) {
      return false;
    }

    const originals = game.__qolboxMetricOriginals || {};
    for (const metricName of ['_P', 'Qp', 'lg', 'ug']) {
      const original = originals[metricName];
      try {
        if (original && original.descriptor) {
          Object.defineProperty(game, metricName, original.descriptor);
        } else {
          delete game[metricName];
        }
      } catch {
        // Keep going; any restored metric is better than leaving the whole override active.
      }
    }

    delete game.__qolboxPinnedDimensions;
    delete game.__qolboxMetricOriginals;
    delete game.__qolboxMetricOverrideInstalled;
    return true;
  }

  function restoreNativeFullscreenPatch(game = window.a8) {
    if (!game) {
      return false;
    }

    if (game.ag && game.ag.__qolboxWrapped && game.ag.__qolboxOriginal) {
      game.ag = game.ag.__qolboxOriginal;
    }

    restoreNativeMetricOverride(game);

    if (typeof game.ag === 'function') {
      try {
        game.ag.call(game);
      } catch {
        // Ignore native resize failures while the game is transitioning.
      }
    }

    return true;
  }

  function installNativeFullscreenPatch() {
    const game = window.a8;
    if (!game) {
      return false;
    }

    installNativeMetricOverride(game);

    if (typeof game.ag === 'function' && !game.ag.__qolboxWrapped) {
      const originalResize = game.ag;
      const wrappedResize = function (...args) {
        setNativeFullscreenSize(getFullscreenDimensions());

        if (game.__qolboxRunningNativeResize) {
          return originalResize.apply(this, args);
        }

        game.__qolboxRunningNativeResize = true;
        try {
          const result = originalResize.apply(this, args);
          setNativeFullscreenSize(getFullscreenDimensions());
          return result;
        } finally {
          game.__qolboxRunningNativeResize = false;
        }
      };

      wrappedResize.__qolboxWrapped = true;
      wrappedResize.__qolboxOriginal = originalResize;
      game.ag = wrappedResize;
    }
    return true;
  }

  function runNativeResize(dimensions = getFullscreenDimensions()) {
    const game = window.a8;
    if (!game || typeof game.ag !== 'function') {
      return false;
    }

    setNativeFullscreenSize(dimensions);

    try {
      game.ag.call(game, dimensions);
      return true;
    } catch {
      return false;
    }
  }

  function fitElementToFrame(element, dimensions = getFullscreenDimensions(), left = 0, top = 0) {
    if (!element || !(element instanceof Element)) {
      return;
    }

    if (isEditorLayer(element)) {
      fitEditorLayerToFrame(element, dimensions);
      return;
    }

    setImportantStyle(element, 'position', 'absolute');
    setImportantStyle(element, 'left', `${left}px`);
    setImportantStyle(element, 'top', `${top}px`);
    setImportantStyle(element, 'right', 'auto');
    setImportantStyle(element, 'bottom', 'auto');
    setImportantStyle(element, 'margin', '0');
    setImportantStyle(element, 'width', `${dimensions.width}px`);
    setImportantStyle(element, 'height', `${dimensions.height}px`);
    setImportantStyle(element, 'max-width', 'none');
    setImportantStyle(element, 'max-height', 'none');
    setImportantStyle(element, 'overflow', 'hidden');
    setImportantStyle(element, 'transform', 'none');
  }

  function getRendererHost(renderer) {
    const host =
      (renderer && (renderer.Tg || renderer.dg)) ||
      (renderer && renderer.Ag && renderer.Ag.view && renderer.Ag.view.parentElement) ||
      null;
    return host instanceof Element ? host : null;
  }

  function getKnownRenderers() {
    const renderers = [];
    const seen = new Set();

    function addRenderer(candidate) {
      if (
        !candidate ||
        typeof candidate !== 'object' ||
        seen.has(candidate) ||
        !candidate.Bc ||
        !(candidate.Ag || typeof candidate.cg === 'function')
      ) {
        return;
      }

      seen.add(candidate);
      renderers.push(candidate);
    }

    function collect(candidate) {
      if (!candidate) {
        return;
      }

      if (Array.isArray(candidate)) {
        candidate.forEach(collect);
        return;
      }

      addRenderer(candidate);
      addRenderer(candidate.hb);

      if (Array.isArray(candidate.hb)) {
        candidate.hb.forEach(addRenderer);
      }
    }

    collect(window.multiplayerSession);
    collect(window.A4);
    collect(window.a8 && window.a8.II);
    return renderers;
  }

  function resizeKnownRenderers(dimensions = getFullscreenDimensions()) {
    const pixelRatio = Math.max(1, Number(window.devicePixelRatio) || 1);

    for (const renderer of getKnownRenderers()) {
      const frameWidth = Math.max(1, Math.round(dimensions.width));
      const frameHeight = Math.max(1, Math.round(dimensions.height));

      renderer.Bc.wc = frameWidth;
      renderer.Bc.mc = frameHeight;

      if (renderer.Ag && typeof renderer.Ag === 'object') {
        if ('autoDensity' in renderer.Ag) {
          renderer.Ag.autoDensity = true;
        }
        if (typeof renderer.Ag.resolution === 'number') {
          renderer.Ag.resolution = pixelRatio;
        }
        if (renderer.Ag.options && typeof renderer.Ag.options === 'object') {
          renderer.Ag.options.autoDensity = true;
          renderer.Ag.options.resolution = pixelRatio;
        }
      }

      try {
        if (typeof renderer.cg === 'function') {
          renderer.cg(frameWidth, frameHeight);
        } else if (renderer.Ag && typeof renderer.Ag.resize === 'function') {
          renderer.Ag.resize(frameWidth, frameHeight);
        }
      } catch {
        // Ignore incomplete renderers while the scene is rebuilding.
      }

      fitElementToFrame(getRendererHost(renderer), dimensions, dimensions.left, dimensions.top);

      if (renderer.Ag && renderer.Ag.view) {
        const view = renderer.Ag.view;

        setImportantStyle(view, 'position', 'absolute');
        setImportantStyle(view, 'left', '0');
        setImportantStyle(view, 'top', '0');
        setImportantStyle(view, 'right', 'auto');
        setImportantStyle(view, 'bottom', 'auto');
        setImportantStyle(view, 'width', `${frameWidth}px`);
        setImportantStyle(view, 'height', `${frameHeight}px`);
        setImportantStyle(view, 'max-width', 'none');
        setImportantStyle(view, 'max-height', 'none');
        setImportantStyle(view, 'transform', 'none');

        fitElementToFrame(view.parentElement, dimensions, dimensions.left, dimensions.top);
      }
    }
  }

  function getActiveRenderCanvas(mode = getActiveRenderMode()) {
    const selector =
      mode === 'gameplay'
        ? FULLSCREEN_GAMEPLAY_LAYER_SELECTOR
        : mode === 'editor'
          ? FULLSCREEN_EDITOR_LAYER_SELECTOR
          : FULLSCREEN_MENU_LAYER_SELECTOR;

    for (const layer of document.querySelectorAll(selector)) {
      if (!isElementVisible(layer)) {
        continue;
      }

      const canvas = layer.querySelector('canvas');
      if (canvas) {
        return canvas;
      }
    }

    return document.querySelector(FULLSCREEN_RENDER_CANVAS_SELECTOR);
  }

  function getLayoutProbe() {
    const appContainer = document.getElementById('appContainer');
    const relativeContainer = document.getElementById('relativeContainer');
    const renderLayer = getActiveRenderCanvas();
    const appRect = appContainer ? appContainer.getBoundingClientRect() : null;
    const relativeRect = relativeContainer ? relativeContainer.getBoundingClientRect() : null;
    const renderRect = renderLayer ? renderLayer.getBoundingClientRect() : null;
    const game = window.a8;
    const renderers = getKnownRenderers();

    return {
      appWidth: appRect ? Math.round(appRect.width) : 0,
      appHeight: appRect ? Math.round(appRect.height) : 0,
      relativeWidth: relativeRect ? Math.round(relativeRect.width) : 0,
      relativeHeight: relativeRect ? Math.round(relativeRect.height) : 0,
      renderWidth: renderRect ? Math.round(renderRect.width) : 0,
      renderHeight: renderRect ? Math.round(renderRect.height) : 0,
      renderLeft: renderRect ? Math.round(renderRect.left) : 0,
      renderTop: renderRect ? Math.round(renderRect.top) : 0,
      backingWidth: renderLayer && typeof renderLayer.width === 'number' ? Math.round(renderLayer.width) : 0,
      backingHeight: renderLayer && typeof renderLayer.height === 'number' ? Math.round(renderLayer.height) : 0,
      rendererCount: renderers.length,
      nativeWidth: Number(game && game.lg) || 0,
      nativeHeight: Number(game && game.ug) || 0,
    };
  }

  function isRenderProbeAligned(probe, dimensions) {
    if (probe.renderWidth <= 0 || probe.renderHeight <= 0) {
      return false;
    }

    const expectedBacking = getExpectedBackingSize(dimensions);
    const backingIsAligned =
      dimensions.mode === 'editor'
        ? probe.backingWidth > 0 && probe.backingHeight > 0
        : Math.abs(probe.backingWidth - expectedBacking.width) <= 2 &&
          Math.abs(probe.backingHeight - expectedBacking.height) <= 2;

    return (
      Math.abs(probe.renderWidth - dimensions.width) <= 2 &&
      Math.abs(probe.renderHeight - dimensions.height) <= 2 &&
      Math.abs(probe.renderLeft - dimensions.left) <= 2 &&
      Math.abs(probe.renderTop - dimensions.top) <= 2 &&
      backingIsAligned
    );
  }

  function isNativeProbeAligned(probe, dimensions) {
    if (probe.nativeWidth <= 0 || probe.nativeHeight <= 0) {
      return false;
    }

    return (
      Math.abs(probe.nativeWidth - dimensions.width) <= 2 &&
      Math.abs(probe.nativeHeight - dimensions.height) <= 2
    );
  }

  function buildFullscreenSignature(dimensions, probe) {
    return [
      dimensions.mode,
      dimensions.viewportWidth,
      dimensions.viewportHeight,
      dimensions.width,
      dimensions.height,
      dimensions.left,
      dimensions.top,
      probe.appWidth,
      probe.appHeight,
      probe.relativeWidth,
      probe.relativeHeight,
      probe.renderWidth,
      probe.renderHeight,
      probe.renderLeft,
      probe.renderTop,
      probe.backingWidth,
      probe.backingHeight,
      probe.rendererCount,
      probe.nativeWidth,
      probe.nativeHeight,
      Boolean(window.a8),
    ].join(':');
  }

  function refreshFullscreen(force = false) {
    if (!shouldRunFeature(FEATURE_FULLSCREEN)) {
      clearFullscreenLayoutStyles();
      return false;
    }

    if (shouldWaitForNativeLayoutSeed()) {
      window.setTimeout(() => scheduleUiWork({ force: true, passes: 1 }), 100);
      return false;
    }

    const dimensions = getFullscreenDimensions();
    const probe = getLayoutProbe();
    const signature = buildFullscreenSignature(dimensions, probe);
    const transitionOverlap = isMenuGameplayOverlap();

    patchLobbyMusicController();
    stopLobbyMusicIfNeeded();
    updateGameStartIndicator();
    enforceFullscreenLayout(dimensions);
    installNativeFullscreenPatch();
    setNativeFullscreenSize(dimensions);

    if (
      !force &&
      signature === lastFullscreenSignature &&
      isRenderProbeAligned(probe, dimensions) &&
      isNativeProbeAligned(probe, dimensions)
    ) {
      return false;
    }

    lastFullscreenSignature = signature;
    const resizedNatively = runNativeResize(dimensions);
    const postNativeProbe = getLayoutProbe();

    if (!transitionOverlap && (!resizedNatively || !isRenderProbeAligned(postNativeProbe, dimensions))) {
      resizeKnownRenderers(dimensions);
    }

    enforceFullscreenLayout(dimensions);
    lastFullscreenSignature = buildFullscreenSignature(dimensions, getLayoutProbe());
    return true;
  }

  function matchesElementOrDescendant(node, selector) {
    if (!(node instanceof Element)) {
      return false;
    }

    return node.matches(selector) || Boolean(node.closest(selector)) || Boolean(node.querySelector(selector));
  }

  function mutationTouchesSelector(record, selector) {
    const targetElement =
      record.target instanceof Element
        ? record.target
        : record.target && record.target.parentElement instanceof Element
          ? record.target.parentElement
          : null;

    if (matchesElementOrDescendant(targetElement, selector)) {
      return true;
    }

    for (const node of record.addedNodes) {
      if (matchesElementOrDescendant(node, selector)) {
        return true;
      }
    }

    for (const node of record.removedNodes) {
      if (matchesElementOrDescendant(node, selector)) {
        return true;
      }
    }

    return false;
  }

  function observeResizeTarget(element) {
    if (!fullscreenResizeObserver || !(element instanceof Element) || observedResizeTargets.has(element)) {
      return;
    }

    observedResizeTargets.add(element);
    fullscreenResizeObserver.observe(element);
  }

  function refreshObservedResizeTargets() {
    observeResizeTarget(document.documentElement);
    observeResizeTarget(document.body);
    observeResizeTarget(document.getElementById('appContainer'));
    observeResizeTarget(document.getElementById('relativeContainer'));
    observeResizeTarget(document.getElementById('backgroundImage'));

    for (const element of document.querySelectorAll(FULLSCREEN_RENDER_LAYER_SELECTOR)) {
      observeResizeTarget(element);
    }

    for (const element of document.querySelectorAll(FULLSCREEN_RENDER_CANVAS_SELECTOR)) {
      observeResizeTarget(element);
    }
  }

  function applyPersistentFeatures() {
    applyFeatureRootClasses();

    if (shouldRunFeature(FEATURE_RESERVE)) {
      patchReserveSpotFeature();
    } else {
      syncReserveJoinButtonLabel();
    }

    if (shouldRunFeature(FEATURE_GAME_START_ALERT)) {
      installGameStartIndicatorHooks();
      updateGameStartIndicator();
    } else {
      disableFeatureSideEffects(FEATURE_GAME_START_ALERT);
    }

    if (shouldRunFeature(FEATURE_CHAT)) {
      patchChatTabOrder();
    }

    if (shouldRunFeature(FEATURE_AUDIO)) {
      installTabFocusHooks();
      hookHowlPrototype();
      patchLobbyMusicController();
      patchGameVolumeMenu();
      installYouTubeReadyCallbackHook();
      hookYouTubePlayer();
      patchJukeboxMenu();
      patchJukeboxKnob();
      applyJukeboxState();
    } else {
      disableFeatureSideEffects(FEATURE_AUDIO);
    }
  }

  // Coalesce DOM churn; hidden tabs use a timeout because requestAnimationFrame can pause.
  function scheduleUiWork({ force = false, features = false, passes = 1 } = {}) {
    scheduledWorkForce = scheduledWorkForce || force;
    scheduledWorkFeatures = scheduledWorkFeatures || features;
    scheduledWorkPasses = Math.max(scheduledWorkPasses, Math.max(1, passes));

    if (scheduledWorkRaf) {
      return;
    }

    const runScheduledWork = () => {
      scheduledWorkRaf = 0;

      const shouldForce = scheduledWorkForce;
      const shouldPatchFeatures = scheduledWorkFeatures;
      const remainingPasses = scheduledWorkPasses;

      scheduledWorkForce = false;
      scheduledWorkFeatures = false;
      scheduledWorkPasses = 0;

      ensureGlobalStyle();
      applyFeatureRootClasses();
      installFullscreenHooks();

      if (shouldPatchFeatures) {
        applyPersistentFeatures();
      }

      refreshFullscreen(shouldForce);
      refreshObservedResizeTargets();

      if (remainingPasses > 1) {
        scheduleUiWork({ force: true, passes: remainingPasses - 1 });
      }
    };

    scheduledWorkRaf = document.hidden
      ? window.setTimeout(runScheduledWork, 0)
      : window.requestAnimationFrame(runScheduledWork);
  }

  function installGameReadyHook() {
    if (gameReadyHookInstalled) {
      return;
    }

    gameReadyHookInstalled = true;

    if (window.a8) {
      scheduleUiWork({ force: true, passes: FULLSCREEN_SETTLE_PASSES });
      return;
    }

    try {
      let pendingGame = null;

      Object.defineProperty(window, 'a8', {
        configurable: true,
        enumerable: true,
        get() {
          return pendingGame;
        },
        set(value) {
          pendingGame = value;
          Object.defineProperty(window, 'a8', {
            configurable: true,
            enumerable: true,
            writable: true,
            value,
          });
          scheduleUiWork({ force: true, passes: FULLSCREEN_SETTLE_PASSES });
        },
      });
    } catch {
      // Fall back to the DOM observers if the native game object can't be trapped.
    }
  }

  function installFullscreenHooks() {
    if (fullscreenHooksInstalled) {
      return;
    }

    if (!document.documentElement) {
      scheduleUiWork({ force: true, features: true, passes: FULLSCREEN_SETTLE_PASSES });
      return;
    }

    fullscreenHooksInstalled = true;
    installGameReadyHook();
    installQolboxMenuHooks();
    installChatEscapeHooks();

    if (shouldRunFeature(FEATURE_AUDIO)) {
      installTabFocusHooks();
    }

    if (shouldRunFeature(FEATURE_GAME_START_ALERT)) {
      installGameStartIndicatorHooks();
    }

    if (shouldRunFeature(FEATURE_RESERVE)) {
      installReserveSocketCaptureHook();
    }

    window.addEventListener('resize', () => scheduleUiWork({ force: true, passes: RESIZE_SETTLE_PASSES }), true);
    window.addEventListener(
      'orientationchange',
      () => scheduleUiWork({ force: true, passes: RESIZE_SETTLE_PASSES }),
      true
    );
    window.addEventListener(
      'load',
      () => scheduleUiWork({ force: true, features: true, passes: FULLSCREEN_SETTLE_PASSES }),
      true
    );
    window.addEventListener(
      'pageshow',
      () => scheduleUiWork({ force: true, features: true, passes: RESIZE_SETTLE_PASSES }),
      true
    );
    document.addEventListener(
      'visibilitychange',
      () => {
        if (!document.hidden) {
          scheduleUiWork({ force: true, features: true, passes: RESIZE_SETTLE_PASSES });
        }
      },
      true
    );
    document.addEventListener(
      'fullscreenchange',
      () => scheduleUiWork({ force: true, passes: RESIZE_SETTLE_PASSES }),
      true
    );

    fullscreenMutationObserver = new MutationObserver(records => {
      let needsLayout = false;
      let needsFeatures = false;

      for (const record of records) {
        if (!needsLayout && mutationTouchesSelector(record, FULLSCREEN_LAYOUT_TARGET_SELECTOR)) {
          needsLayout = true;
        }

        if (!needsFeatures && mutationTouchesSelector(record, FEATURE_PATCH_TARGET_SELECTOR)) {
          needsFeatures = true;
        }

        if (needsLayout && needsFeatures) {
          break;
        }
      }

      if (needsLayout || needsFeatures) {
        updateGameStartIndicator();
        scheduleUiWork({
          force: needsLayout,
          features: needsFeatures,
          passes: needsLayout ? FULLSCREEN_SETTLE_PASSES : 1,
        });
      }
    });

    fullscreenMutationObserver.observe(document.documentElement, {
      subtree: true,
      childList: true,
      characterData: true,
      attributes: true,
      attributeFilter: ['class', 'style', 'id'],
    });

    if ('ResizeObserver' in window && typeof window.ResizeObserver === 'function') {
      fullscreenResizeObserver = new window.ResizeObserver(() => {
        scheduleUiWork({ force: true, passes: 1 });
      });
      refreshObservedResizeTargets();
    }
  }

  function findGameVolumeItem() {
    const candidates = document.querySelectorAll('.items.left .item, .item');
    for (const candidate of candidates) {
      if (/^Volume:\s*\d+%$/.test(candidate.textContent.trim())) {
        return candidate;
      }
    }

    return null;
  }

  function updateGameVolumeText() {
    if (!shouldRunFeature(FEATURE_AUDIO)) {
      return;
    }

    if (!currentGameMenuItem || !currentGameMenuItem.isConnected) {
      currentGameMenuItem = findGameVolumeItem();
    }

    if (!currentGameMenuItem) {
      return;
    }

    currentGameMenuItem.textContent = `Volume: ${gamePercent}%`;
    currentGameMenuItem.title = 'Scroll or use arrow keys to adjust by 5%, left-click up, right-click down';
    currentGameMenuItem.style.cursor = 'ns-resize';
    currentGameMenuItem.style.userSelect = 'none';
    keepOutOfBrowserTabOrder(currentGameMenuItem);
    currentGameMenuItem.setAttribute('role', 'slider');
    currentGameMenuItem.setAttribute('aria-label', 'Game volume');
    currentGameMenuItem.setAttribute('aria-valuemin', '0');
    currentGameMenuItem.setAttribute('aria-valuemax', '100');
    currentGameMenuItem.setAttribute('aria-valuenow', String(gamePercent));
    currentGameMenuItem.setAttribute('aria-valuetext', `${gamePercent}%`);
  }

  function applyGameVolume() {
    updateGameVolumeText();

    if (!window.Howler || !Array.isArray(window.Howler._howls) || !originalHowlVolume) {
      return;
    }

    settingGameVolumeInternally = true;
    try {
      for (const howl of window.Howler._howls) {
        if (!howl || typeof howl !== 'object') {
          continue;
        }

        if (typeof howl.__qolboxBaseVolume !== 'number') {
          const initialVolume = Number(howl._volume);
          howl.__qolboxBaseVolume = Number.isFinite(initialVolume) ? initialVolume : 1;
        }

        const scalar = shouldRunFeature(FEATURE_AUDIO) ? percentToGameScalar(gamePercent) : 1;
        originalHowlVolume.call(howl, howl.__qolboxBaseVolume * scalar);
      }
    } finally {
      settingGameVolumeInternally = false;
    }
  }

  function setGamePercent(nextPercent) {
    gamePercent = clampPercent(nextPercent, DEFAULT_GAME_PERCENT);
    saveGamePercent();
    applyGameVolume();
  }

  function patchGameVolumeMenu() {
    if (!shouldRunFeature(FEATURE_AUDIO)) {
      return false;
    }

    const item = findGameVolumeItem();
    if (!item) {
      return false;
    }

    currentGameMenuItem = item;

    if (!item.dataset.qolboxGameVolumePatched) {
      item.dataset.qolboxGameVolumePatched = 'true';
      item.addEventListener(
        'click',
        event => {
          if (!shouldRunFeature(FEATURE_AUDIO)) {
            return;
          }

          event.preventDefault();
          event.stopImmediatePropagation();
          focusElementWithoutScroll(item);
          setGamePercent(gamePercent + STEP_PERCENT);
        },
        true
      );
      item.addEventListener(
        'contextmenu',
        event => {
          if (!shouldRunFeature(FEATURE_AUDIO)) {
            return;
          }

          event.preventDefault();
          event.stopImmediatePropagation();
          focusElementWithoutScroll(item);
          setGamePercent(gamePercent - STEP_PERCENT);
        },
        true
      );
      item.addEventListener(
        'wheel',
        event => {
          if (!shouldRunFeature(FEATURE_AUDIO)) {
            return;
          }

          event.preventDefault();
          event.stopImmediatePropagation();
          focusElementWithoutScroll(item);
          setGamePercent(gamePercent + (event.deltaY < 0 ? STEP_PERCENT : -STEP_PERCENT));
        },
        { passive: false, capture: true }
      );
      item.addEventListener(
        'keydown',
        event => {
          if (!shouldRunFeature(FEATURE_AUDIO)) {
            return;
          }

          const nextPercent = getKeyboardPercentTarget(event, gamePercent, STEP_PERCENT);
          if (nextPercent === null) {
            return;
          }

          event.preventDefault();
          event.stopImmediatePropagation();
          setGamePercent(nextPercent);
        },
        true
      );
    }

    updateGameVolumeText();
    return true;
  }

  function shouldSuppressReserveRetryAudio() {
    return Boolean(shouldRunFeature(FEATURE_RESERVE) && reserveState && reserveState.active && Date.now() < reserveRetryAudioSuppressUntil);
  }

  function hookHowlPrototype() {
    if (!shouldRunFeature(FEATURE_AUDIO) && !originalHowlVolume) {
      return false;
    }

    const HowlCtor = window.Howl;
    if (!HowlCtor || !HowlCtor.prototype) {
      return false;
    }

    let volumePatched = Boolean(HowlCtor.prototype.volume && HowlCtor.prototype.volume.__qolboxWrapped);

    if (!volumePatched && typeof HowlCtor.prototype.volume === 'function') {
      originalHowlVolume = HowlCtor.prototype.volume;

      function wrappedVolume(value, ...rest) {
        if (arguments.length === 0) {
          if (typeof this.__qolboxBaseVolume === 'number') {
            return this.__qolboxBaseVolume;
          }

          return originalHowlVolume.call(this);
        }

        if (typeof value === 'number' && !settingGameVolumeInternally) {
          this.__qolboxBaseVolume = value;
          const scalar = shouldRunFeature(FEATURE_AUDIO) ? percentToGameScalar(gamePercent) : 1;
          return originalHowlVolume.call(this, value * scalar, ...rest);
        }

        return originalHowlVolume.call(this, value, ...rest);
      }

      wrappedVolume.__qolboxWrapped = true;
      HowlCtor.prototype.volume = wrappedVolume;
      volumePatched = true;
    }

    if (
      typeof HowlCtor.prototype.play === 'function' &&
      !HowlCtor.prototype.play.__qolboxReserveAudioWrapped
    ) {
      originalHowlPlay = HowlCtor.prototype.play;

      function wrappedPlay(...args) {
        if (shouldSuppressReserveRetryAudio()) {
          return undefined;
        }

        return originalHowlPlay.call(this, ...args);
      }

      wrappedPlay.__qolboxReserveAudioWrapped = true;
      HowlCtor.prototype.play = wrappedPlay;
    }

    if (volumePatched) {
      applyGameVolume();
    }

    return volumePatched;
  }

  function findSettingsContainer() {
    return document.querySelector('.items.left');
  }

  function findChangeControlsItem(container) {
    if (!container) {
      return null;
    }

    for (const item of container.querySelectorAll('.item')) {
      if (item.textContent.trim() === 'Change Controls') {
        return item;
      }
    }

    return null;
  }

  function getJukeboxMenuLabel() {
    return jukeboxState.muted ? 'Unmute Jukebox' : 'Mute Jukebox';
  }

  function updateJukeboxMenuItem() {
    if (!currentJukeboxMenuItem || !currentJukeboxMenuItem.isConnected) {
      return;
    }

    currentJukeboxMenuItem.textContent = getJukeboxMenuLabel();
    currentJukeboxMenuItem.title = 'Remember the lobby radio mute state';
  }

  function patchJukeboxMenu() {
    if (!shouldRunFeature(FEATURE_AUDIO)) {
      return false;
    }

    const container = findSettingsContainer();
    if (!container) {
      return false;
    }

    let item = container.querySelector('.item[data-qolbox-jukebox-menu="true"]');
    if (!item) {
      item = document.createElement('div');
      item.className = 'item';
      item.dataset.qolboxJukeboxMenu = 'true';
      item.addEventListener(
        'click',
        event => {
          event.preventDefault();
          event.stopImmediatePropagation();
          toggleJukeboxMute();
        },
        true
      );

      const beforeItem = findChangeControlsItem(container);
      if (beforeItem) {
        container.insertBefore(item, beforeItem);
      } else {
        container.appendChild(item);
      }
    }

    currentJukeboxMenuItem = item;
    updateJukeboxMenuItem();
    return true;
  }

  function findJukeboxKnob() {
    return document.querySelector('.jukebox .knob.volumeContainer');
  }

  function readJukeboxPercentFromKnob(knob) {
    const bar = knob ? knob.querySelector('.barSVG') : null;
    if (!bar) {
      return null;
    }

    const inlineAngle = parseJukeboxAngleFromTransform(bar.style.transform);
    if (inlineAngle !== null) {
      return angleToJukeboxPercent(inlineAngle);
    }

    const computedAngle = parseJukeboxAngleFromTransform(window.getComputedStyle(bar).transform);
    if (computedAngle !== null) {
      return angleToJukeboxPercent(computedAngle);
    }

    return null;
  }

  function getEffectiveJukeboxPercent() {
    return clampJukeboxPercent(jukeboxState.percent ?? DEFAULT_JUKEBOX_PERCENT);
  }

  function ensureJukeboxPercent(knob) {
    if (jukeboxState.percent !== null) {
      return;
    }

    if (!knob) {
      return;
    }

    jukeboxState.percent = readJukeboxPercentFromKnob(knob) ?? DEFAULT_JUKEBOX_PERCENT;
    saveJukeboxState();
  }

  function updateJukeboxKnobAccessibility(knob, percent = null) {
    if (!knob) {
      return;
    }

    const effectivePercent = jukeboxState.muted
      ? 0
      : clampJukeboxPercent(percent ?? jukeboxState.percent ?? DEFAULT_JUKEBOX_PERCENT);

    knob.setAttribute('aria-label', 'Jukebox volume');
    knob.setAttribute('aria-orientation', 'vertical');
    knob.setAttribute('aria-valuemin', '0');
    knob.setAttribute('aria-valuemax', '100');
    knob.setAttribute('aria-valuenow', String(effectivePercent));
    knob.setAttribute('aria-valuetext', jukeboxState.muted ? `Muted (${effectivePercent}%)` : `${effectivePercent}%`);
    knob.setAttribute('role', 'slider');
    keepInBrowserTabOrder(knob);
  }

  function setKnobVisual(knob, percent) {
    if (!knob) {
      return;
    }

    const angle = percentToJukeboxAngle(percent);
    const bar = knob.querySelector('.barSVG');
    const arcPath = knob.querySelector('.arcSVG path');

    if (bar) {
      bar.style.transform = `rotate(${angle}deg)`;
    }

    if (arcPath) {
      const startPoint = polarToArcPoint(JUKEBOX_MIN_ANGLE);
      const endPoint = polarToArcPoint(angle);
      const sweepDegrees = Math.max(0, angle - JUKEBOX_MIN_ANGLE);
      const largeArcFlag = sweepDegrees > 180 ? 1 : 0;
      arcPath.setAttribute(
        'd',
        `M ${startPoint.x} ${startPoint.y} A ${JUKEBOX_ARC_RADIUS} ${JUKEBOX_ARC_RADIUS} 0 ${largeArcFlag} 1 ${endPoint.x} ${endPoint.y}`
      );
    }

    updateJukeboxKnobAccessibility(knob, percent);
  }

  function applyJukeboxStateToKnob(knob) {
    if (!shouldRunFeature(FEATURE_AUDIO) || !knob || activeKnobDrag) {
      return;
    }

    ensureJukeboxPercent(knob);
    setKnobVisual(knob, jukeboxState.muted ? 0 : jukeboxState.percent);
  }

  function trackPlayer(player) {
    if (!player || typeof player.setVolume !== 'function') {
      return;
    }

    trackedPlayers.add(player);
  }

  function discoverPlayers() {
    const yt = window.YT;
    if (!yt || typeof yt.get !== 'function') {
      return;
    }

    for (const candidate of document.querySelectorAll('#ytContainer [id], #ytContainer iframe[id]')) {
      if (!candidate.id) {
        continue;
      }

      try {
        const player = yt.get(candidate.id);
        if (player && typeof player.setVolume === 'function') {
          trackPlayer(player);
        }
      } catch {
        // Ignore unresolved ids.
      }
    }
  }

  function applyJukeboxStateToPlayer(player) {
    if (!shouldRunFeature(FEATURE_AUDIO)) {
      return;
    }

    if (!player || typeof player.setVolume !== 'function') {
      trackedPlayers.delete(player);
      return;
    }

    ensureJukeboxPercent(findJukeboxKnob());

    try {
      if (jukeboxState.muted) {
        if (typeof player.unMute === 'function') {
          player.unMute();
        }
        player.setVolume(0);
        if (typeof player.mute === 'function') {
          player.mute();
        }
      } else {
        if (typeof player.unMute === 'function') {
          player.unMute();
        }
        player.setVolume(percentToJukeboxVolume(getEffectiveJukeboxPercent()));
      }
    } catch {
      trackedPlayers.delete(player);
    }
  }

  function applyJukeboxState() {
    if (!shouldRunFeature(FEATURE_AUDIO)) {
      return;
    }

    const knob = findJukeboxKnob();
    applyJukeboxStateToKnob(knob);

    discoverPlayers();
    for (const player of Array.from(trackedPlayers)) {
      applyJukeboxStateToPlayer(player);
    }
  }

  function scheduleYouTubeHookRetry() {
    if (
      !shouldRunFeature(FEATURE_AUDIO) ||
      youTubeHookInstalled ||
      youTubeHookRetryTimer ||
      youTubeHookRetryCount >= YOUTUBE_HOOK_MAX_RETRIES
    ) {
      return;
    }

    youTubeHookRetryCount += 1;
    youTubeHookRetryTimer = window.setTimeout(() => {
      youTubeHookRetryTimer = 0;
      hookYouTubePlayer();
      applyJukeboxState();
    }, YOUTUBE_HOOK_RETRY_DELAY_MS);
  }

  function wrapYouTubeReadyCallback(callback) {
    if (typeof callback !== 'function' || callback.__qolboxWrapped) {
      return callback;
    }

    function wrappedYouTubeReadyCallback(...args) {
      if (shouldRunFeature(FEATURE_AUDIO)) {
        hookYouTubePlayer();
      }
      try {
        return callback.apply(this, args);
      } finally {
        if (shouldRunFeature(FEATURE_AUDIO)) {
          hookYouTubePlayer();
          window.setTimeout(applyJukeboxState, 0);
        }
      }
    }

    wrappedYouTubeReadyCallback.__qolboxWrapped = true;
    wrappedYouTubeReadyCallback.__qolboxOriginal = callback;
    return wrappedYouTubeReadyCallback;
  }

  function installYouTubeReadyCallbackHook() {
    if (!shouldRunFeature(FEATURE_AUDIO)) {
      return;
    }

    if (youTubeReadyCallbackHookInstalled) {
      return;
    }

    const descriptor = Object.getOwnPropertyDescriptor(window, 'onYouTubeIframeAPIReady');
    if (descriptor && (!descriptor.configurable || descriptor.get || descriptor.set)) {
      return;
    }

    youTubeReadyCallbackHookInstalled = true;
    let readyCallback = wrapYouTubeReadyCallback(descriptor ? descriptor.value : window.onYouTubeIframeAPIReady);

    try {
      Object.defineProperty(window, 'onYouTubeIframeAPIReady', {
        configurable: true,
        enumerable: true,
        get() {
          return readyCallback;
        },
        set(value) {
          readyCallback = wrapYouTubeReadyCallback(value);
        },
      });
    } catch {
      youTubeReadyCallbackHookInstalled = false;
    }
  }

  function wrapYouTubePlayerOptions(args, getPlayer) {
    const wrappedArgs = Array.from(args);
    const options = wrappedArgs[1];
    if (!options || typeof options !== 'object') {
      return wrappedArgs;
    }

    const events = options.events && typeof options.events === 'object' ? options.events : {};
    const originalOnReady = events.onReady;
    const wrappedEvents = {
      ...events,
      onReady(event) {
        const player = (event && event.target) || getPlayer();
        trackPlayer(player);

        try {
          return typeof originalOnReady === 'function' ? originalOnReady.apply(this, arguments) : undefined;
        } finally {
          window.setTimeout(() => {
            applyJukeboxStateToPlayer(player || getPlayer());
          }, 0);
        }
      },
    };

    wrappedArgs[1] = {
      ...options,
      events: wrappedEvents,
    };

    return wrappedArgs;
  }

  function hookYouTubePlayer() {
    if (!shouldRunFeature(FEATURE_AUDIO)) {
      return false;
    }

    installYouTubeReadyCallbackHook();

    const yt = window.YT;
    if (!yt || typeof yt.Player !== 'function') {
      scheduleYouTubeHookRetry();
      return false;
    }

    if (youTubeHookRetryTimer) {
      window.clearTimeout(youTubeHookRetryTimer);
      youTubeHookRetryTimer = 0;
    }
    youTubeHookRetryCount = 0;

    if (youTubeHookInstalled || yt.Player.__qolboxWrapped) {
      youTubeHookInstalled = true;
      discoverPlayers();
      return true;
    }

    const OriginalPlayer = yt.Player;

    function WrappedPlayer(...args) {
      let instance = null;
      const wrappedArgs = wrapYouTubePlayerOptions(args, () => instance);
      instance = new OriginalPlayer(...wrappedArgs);
      trackPlayer(instance);
      window.setTimeout(() => {
        applyJukeboxStateToPlayer(instance);
      }, 0);
      return instance;
    }

    Object.setPrototypeOf(WrappedPlayer, OriginalPlayer);
    WrappedPlayer.prototype = OriginalPlayer.prototype;
    WrappedPlayer.__qolboxWrapped = true;
    yt.Player = WrappedPlayer;
    youTubeHookInstalled = true;
    discoverPlayers();
    return true;
  }

  function setJukeboxPercent(nextPercent) {
    if (!shouldRunFeature(FEATURE_AUDIO)) {
      return;
    }

    jukeboxState.percent = clampJukeboxPercent(nextPercent);
    jukeboxState.muted = false;
    saveJukeboxState();
    updateJukeboxMenuItem();
    setKnobVisual(findJukeboxKnob(), jukeboxState.percent);
    applyJukeboxState();
  }

  function toggleJukeboxMute() {
    if (!shouldRunFeature(FEATURE_AUDIO)) {
      return;
    }

    ensureJukeboxPercent(findJukeboxKnob());
    jukeboxState.muted = !jukeboxState.muted;
    saveJukeboxState();
    updateJukeboxMenuItem();
    applyJukeboxState();
  }

  function getKnobPercentFromPointer(event) {
    if (!activeKnobDrag) {
      return DEFAULT_JUKEBOX_PERCENT;
    }

    const deltaY = activeKnobDrag.startY - event.clientY;
    return clampJukeboxPercent(activeKnobDrag.startPercent + deltaY * JUKEBOX_DRAG_SENSITIVITY);
  }

  function onKnobPointerMove(event) {
    if (!shouldRunFeature(FEATURE_AUDIO) || !activeKnobDrag) {
      return;
    }

    event.preventDefault();
    setJukeboxPercent(getKnobPercentFromPointer(event));
  }

  function endKnobDrag() {
    activeKnobDrag = null;
  }

  function patchGlobalKnobListeners() {
    if (window.__qolboxJukeboxGlobalsPatched) {
      return;
    }

    window.__qolboxJukeboxGlobalsPatched = true;
    window.addEventListener('pointermove', onKnobPointerMove, true);
    window.addEventListener('mousemove', onKnobPointerMove, true);
    window.addEventListener('pointerup', endKnobDrag, true);
    window.addEventListener('mouseup', endKnobDrag, true);
    window.addEventListener('blur', endKnobDrag, true);
  }

  function patchJukeboxKnob() {
    if (!shouldRunFeature(FEATURE_AUDIO)) {
      return false;
    }

    const knob = findJukeboxKnob();
    if (!knob) {
      return false;
    }

    patchGlobalKnobListeners();
    ensureJukeboxPercent(knob);
    applyJukeboxStateToKnob(knob);
    patchJukeboxKeyboardFocus(knob);

    if (!knob.dataset.qolboxJukeboxPatched) {
      knob.dataset.qolboxJukeboxPatched = 'true';
      knob.title = 'Scroll, drag, or use arrow keys to adjust the jukebox volume';
      knob.style.touchAction = 'none';

      knob.addEventListener(
        'pointerdown',
        event => {
          if (!shouldRunFeature(FEATURE_AUDIO)) {
            return;
          }

          event.preventDefault();
          event.stopPropagation();
          focusElementWithoutScroll(knob);

          if (typeof knob.setPointerCapture === 'function' && event.pointerId !== undefined) {
            try {
              knob.setPointerCapture(event.pointerId);
            } catch {
              // Ignore pointer capture failures.
            }
          }

          if (jukeboxState.muted) {
            jukeboxState.muted = false;
            saveJukeboxState();
            updateJukeboxMenuItem();
            applyJukeboxState();
          }

          activeKnobDrag = {
            startY: event.clientY,
            startPercent: jukeboxState.percent ?? DEFAULT_JUKEBOX_PERCENT,
          };
          onKnobPointerMove(event);
        },
        true
      );

      knob.addEventListener(
        'wheel',
        event => {
          if (!shouldRunFeature(FEATURE_AUDIO)) {
            return;
          }

          event.preventDefault();
          event.stopPropagation();
          focusElementWithoutScroll(knob);
          ensureJukeboxPercent(knob);

          const currentPercent = jukeboxState.muted ? 0 : jukeboxState.percent;
          setJukeboxPercent(currentPercent + (event.deltaY < 0 ? JUKEBOX_WHEEL_STEP : -JUKEBOX_WHEEL_STEP));
        },
        { passive: false }
      );
      knob.addEventListener(
        'keydown',
        event => {
          if (!shouldRunFeature(FEATURE_AUDIO)) {
            return;
          }

          const currentPercent = jukeboxState.muted ? 0 : getEffectiveJukeboxPercent();
          const nextPercent = getKeyboardPercentTarget(event, currentPercent, JUKEBOX_WHEEL_STEP);
          if (nextPercent === null) {
            return;
          }

          event.preventDefault();
          event.stopPropagation();
          ensureJukeboxPercent(knob);
          setJukeboxPercent(nextPercent);
        },
        true
      );
    }

    return true;
  }

  applyFeatureRootClasses();
  ensureGlobalStyle();
  installQolboxMenuHooks();
  if (shouldRunFeature(FEATURE_RESERVE)) {
    installReserveSocketCaptureHook();
  }
  if (shouldRunFeature(FEATURE_AUDIO)) {
    installYouTubeReadyCallbackHook();
  }
  installFullscreenHooks();
  scheduleFirstBootOnboarding();
  scheduleUiWork({ force: true, features: true, passes: FULLSCREEN_SETTLE_PASSES });

  if (document.readyState === 'loading') {
    document.addEventListener(
      'DOMContentLoaded',
      () => scheduleUiWork({ force: true, features: true, passes: FULLSCREEN_SETTLE_PASSES }),
      { once: true }
    );
  } else {
    scheduleUiWork({ force: true, features: true, passes: FULLSCREEN_SETTLE_PASSES });
  }
})();