Time Hooker

Speed up or slow down any webpage by hooking JS/CS/HTML timing functions — ultimate edition

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!)

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!)

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         Time Hooker
// @namespace    http://tampermonkey.net/
// @version      4.0.1
// @description  Speed up or slow down any webpage by hooking JS/CS/HTML timing functions — ultimate edition
// @author       Kushagra
// @match        *://*/*
// @grant        none
// @run-at       document-start
// @license MIT
// ==/UserScript==

(function () {
    'use strict';

    // ═══════════════════════════════════════════════════════════════════════
    //  §0  DOUBLE-INJECTION GUARD
    // ═══════════════════════════════════════════════════════════════════════
    if (window.__timeHookerActive) return;
    try {
        Object.defineProperty(window, '__timeHookerActive', {
            value: true, writable: false, configurable: false
        });
    } catch (_) {
        window.__timeHookerActive = true;
    }

    // ═══════════════════════════════════════════════════════════════════════
    //  §0b  DEBUG LOGGING
    // ═══════════════════════════════════════════════════════════════════════
    const TH_DEBUG = true;
    const log  = (...a) => { if (TH_DEBUG) console.log('%c[TimeHooker]', 'color:#22c55e;font-weight:bold', ...a); };
    const warn = (...a) => { if (TH_DEBUG) console.warn('%c[TimeHooker]', 'color:#f59e0b;font-weight:bold', ...a); };
    log('v4.0 loaded | readyState =', document.readyState,
        '| body =', !!document.body,
        '| docElem =', !!document.documentElement);

    // ═══════════════════════════════════════════════════════════════════════
    //  §1  SPEED STATE
    // ═══════════════════════════════════════════════════════════════════════
    let speedMultiplier = 1;
    let savedSpeed      = 1;
    let hookActive      = true;

    function loadSpeed() {
        try {
            const stored = parseFloat(localStorage.getItem('__th_speed'));
            if (isFinite(stored) && stored > 0 && stored <= 100) return stored;
        } catch (_) {}
        return 1;
    }
    function saveSpeed(s) {
        try { localStorage.setItem('__th_speed', String(s)); } catch (_) {}
    }
    speedMultiplier = loadSpeed();

    // ═══════════════════════════════════════════════════════════════════════
    //  §2  SAVE NATIVE REFERENCES (before any page script can tamper)
    // ═══════════════════════════════════════════════════════════════════════
    const _Date         = window.Date;
    const _now          = Date.now.bind(Date);
    const _perfNow      = performance.now.bind(performance);
    const _setTimeout   = window.setTimeout.bind(window);
    const _setInterval  = window.setInterval.bind(window);
    const _clrTimeout   = window.clearTimeout.bind(window);
    const _clrInterval  = window.clearInterval.bind(window);
    const _raf          = window.requestAnimationFrame.bind(window);
    const _craf         = window.cancelAnimationFrame.bind(window);
    const _MO           = window.MutationObserver;
    const _Worker       = window.Worker;
    const _createElement = document.createElement.bind(document);

    // ═══════════════════════════════════════════════════════════════════════
    //  §3  VIRTUAL CLOCK
    // ═══════════════════════════════════════════════════════════════════════
    let baseReal        = _now();
    let baseVirtual     = baseReal;
    let perfBaseReal    = _perfNow();
    let perfBaseVirtual = perfBaseReal;

    const vNow     = () => baseVirtual + (_now() - baseReal) * speedMultiplier;
    const vPerfNow = () => perfBaseVirtual + (_perfNow() - perfBaseReal) * speedMultiplier;

    function recalibrateClocks(newSpeed) {
        const rn = _now();
        baseVirtual = baseVirtual + (rn - baseReal) * speedMultiplier;
        baseReal    = rn;
        const pn = _perfNow();
        perfBaseVirtual = perfBaseVirtual + (pn - perfBaseReal) * speedMultiplier;
        perfBaseReal    = pn;
        speedMultiplier = newSpeed;
        saveSpeed(newSpeed);
    }

    // ═══════════════════════════════════════════════════════════════════════
    //  §4  HOOK: Date (proper class extension + Symbol.hasInstance)
    // ═══════════════════════════════════════════════════════════════════════
    try {
        class FakeDate extends _Date {
            constructor(...args) {
                if (args.length === 0) super(vNow());
                else super(...args);
            }
        }
        FakeDate.now   = () => vNow();
        FakeDate.parse = _Date.parse.bind(_Date);
        FakeDate.UTC   = _Date.UTC.bind(_Date);
        try { Object.defineProperty(FakeDate, 'name', { value: 'Date', configurable: true }); } catch (_) {}
        try { Object.defineProperty(FakeDate, 'length', { value: 7, configurable: true }); } catch (_) {}
        try {
            Object.defineProperty(FakeDate, Symbol.hasInstance, {
                value: (inst) => inst instanceof _Date, configurable: true
            });
        } catch (_) {}
        try {
            Object.defineProperty(window, 'Date', { get: () => FakeDate, configurable: true });
        } catch (_) {
            window.Date = FakeDate;
        }
        // Store for re-injection guard
        window.__thFakeDate = FakeDate;
        log('Date hooked (class extension)');
    } catch (e) { warn('Could not hook Date:', e); }

    // ═══════════════════════════════════════════════════════════════════════
    //  §5  HOOK: performance.now (prototype-level for iframe coverage)
    // ═══════════════════════════════════════════════════════════════════════
    try {
        Object.defineProperty(Performance.prototype, 'now', {
            value: function () { return vPerfNow(); },
            writable: true, configurable: true,
        });
        log('performance.now hooked (prototype)');
    } catch (_) {
        try { performance.now = () => vPerfNow(); log('performance.now hooked (instance)'); }
        catch (e) { warn('Could not hook performance.now:', e); }
    }

    // ═══════════════════════════════════════════════════════════════════════
    //  §6  HOOK: setTimeout / clearTimeout (virtual ID mapping)
    // ═══════════════════════════════════════════════════════════════════════
    let _vIdCounter = 0;
    const _timeoutMap = new Map();

    try {
        window.setTimeout = function (fn, delay, ...args) {
            const vId = ++_vIdCounter;
            const scaled = Math.max(0, (delay || 0) / speedMultiplier);
            const rId = _setTimeout(function () {
                _timeoutMap.delete(vId);
                if (typeof fn === 'string') {
                    try { eval(fn); } catch (e) { console.error(e); }
                } else if (typeof fn === 'function') {
                    fn(...args);
                }
            }, scaled);
            _timeoutMap.set(vId, rId);
            return vId;
        };
        window.clearTimeout = function (vId) {
            const rId = _timeoutMap.get(vId);
            if (rId !== undefined) {
                _clrTimeout(rId);
                _timeoutMap.delete(vId);
            } else {
                _clrTimeout(vId);
            }
        };
        log('setTimeout hooked (virtual ID)');
    } catch (e) { warn('Could not hook setTimeout:', e); }

    // ═══════════════════════════════════════════════════════════════════════
    //  §7  HOOK: setInterval / clearInterval (tracked + capped map)
    // ═══════════════════════════════════════════════════════════════════════
    const _intervalMap = new Map();
    const MAX_TRACKED_INTERVALS = 500;

    try {
        window.setInterval = function (fn, delay, ...args) {
            const vId = ++_vIdCounter;
            const scaled = Math.max(1, (delay || 0) / speedMultiplier);
            const wrapper = function () {
                if (typeof fn === 'string') {
                    try { eval(fn); } catch (e) { console.error(e); }
                } else if (typeof fn === 'function') {
                    fn(...args);
                }
            };
            const rId = _setInterval(wrapper, scaled);
            if (_intervalMap.size >= MAX_TRACKED_INTERVALS) {
                const firstKey = _intervalMap.keys().next().value;
                _intervalMap.delete(firstKey);
            }
            _intervalMap.set(vId, { rId, fn, delay: delay || 0, args, wrapper });
            return vId;
        };
        window.clearInterval = function (vId) {
            const entry = _intervalMap.get(vId);
            if (entry !== undefined) {
                _clrInterval(entry.rId);
                _intervalMap.delete(vId);
            } else {
                _clrInterval(vId);
            }
        };
        log('setInterval hooked (capped map)');
    } catch (e) { warn('Could not hook setInterval:', e); }

    // ═══════════════════════════════════════════════════════════════════════
    //  §8  HOOK: requestAnimationFrame (multi-pass for speed > 1)
    // ═══════════════════════════════════════════════════════════════════════
    let _rafSeq = 0;
    const _rafCbs = new Map();
    let _rafLoopActive = false;

    function runRafLoop() {
        if (!_rafCbs.size) { _rafLoopActive = false; return; }
        if (speedMultiplier >= 1) {
            const passes = Math.max(1, Math.round(speedMultiplier));
            for (let p = 0; p < passes && _rafCbs.size > 0; p++) {
                const batch = new Map(_rafCbs);
                _rafCbs.clear();
                const t = vPerfNow();
                batch.forEach(cb => { try { cb(t); } catch (e) { console.error(e); } });
            }
            if (_rafCbs.size > 0) _raf(runRafLoop);
            else _rafLoopActive = false;
        } else {
            const frameMs = 1000 / 60;
            const delayMs = frameMs * (1 / speedMultiplier - 1);
            const batch = new Map(_rafCbs);
            _rafCbs.clear();
            const t = vPerfNow();
            batch.forEach(cb => { try { cb(t); } catch (e) { console.error(e); } });
            if (_rafCbs.size > 0) _setTimeout(() => _raf(runRafLoop), delayMs);
            else _rafLoopActive = false;
        }
    }

    try {
        window.requestAnimationFrame = function (cb) {
            const id = ++_rafSeq;
            _rafCbs.set(id, cb);
            if (!_rafLoopActive) { _rafLoopActive = true; _raf(runRafLoop); }
            return id;
        };
        window.cancelAnimationFrame = function (id) { _rafCbs.delete(id); };
        log('rAF hooked (multi-pass)');
    } catch (e) { warn('Could not hook rAF:', e); }

    // ═══════════════════════════════════════════════════════════════════════
    //  §9  HOOK: Web Workers (inject timing hooks via Blob URL)
    // ═══════════════════════════════════════════════════════════════════════
    const _workers = new Set();

    function workerHookCode() {
        return '(function(){' +
            'if(self.__timeHookerActive)return;self.__timeHookerActive=true;' +
            'let _speed=' + speedMultiplier + ';' +
            'const _now=Date.now.bind(Date),_pnow=(typeof performance!=="undefined")?performance.now.bind(performance):_now;' +
            'const _sto=self.setTimeout.bind(self),_sti=self.setInterval.bind(self);' +
            'let bR=_now(),bV=bR,pR=_pnow(),pV=pR;' +
            'const vN=()=>bV+(_now()-bR)*_speed,vP=()=>pV+(_pnow()-pR)*_speed;' +
            'const _RD=Date;class FD extends _RD{constructor(...a){super(a.length?a[0]:vN());}}' +
            'FD.now=vN;FD.parse=_RD.parse;FD.UTC=_RD.UTC;self.Date=FD;' +
            'if(typeof performance!=="undefined")performance.now=vP;' +
            'self.setTimeout=(fn,d,...a)=>_sto(fn,Math.max(0,(d||0)/_speed),...a);' +
            'self.setInterval=(fn,d,...a)=>_sti(fn,Math.max(1,(d||0)/_speed),...a);' +
            'self.addEventListener("message",e=>{' +
            'if(e.data&&e.data.__thSpeed!==undefined){' +
            'const n=_now(),pn=_pnow();bV=bV+(n-bR)*_speed;bR=n;pV=pV+(pn-pR)*_speed;pR=pn;_speed=e.data.__thSpeed;}});' +
            '})();\n';
    }

    function broadcastSpeedToWorkers(s) {
        const dead = [];
        _workers.forEach(ref => {
            const w = ref.deref();
            if (!w) { dead.push(ref); return; }
            try { w.postMessage({ __thSpeed: s }); } catch (_) {}
        });
        dead.forEach(r => _workers.delete(r));
    }

    try {
        if (typeof _Worker !== 'undefined') {
            window.Worker = function (scriptURL, options) {
                let blobURL;
                try {
                    const hookSrc = workerHookCode();
                    const blob = new Blob(
                        [hookSrc + 'importScripts(' + JSON.stringify(String(scriptURL)) + ');'],
                        { type: 'application/javascript' }
                    );
                    blobURL = URL.createObjectURL(blob);
                } catch (_) {
                    blobURL = scriptURL;
                }
                const w = new _Worker(blobURL, options);
                if (blobURL !== scriptURL) {
                    _setTimeout(() => { try { URL.revokeObjectURL(blobURL); } catch (_) {} }, 5000);
                }
                _workers.add(new WeakRef(w));
                return w;
            };
            try { Object.setPrototypeOf(window.Worker, _Worker); } catch (_) {}
            log('Worker hooked');
        }
    } catch (e) { warn('Could not hook Worker:', e); }

    // ═══════════════════════════════════════════════════════════════════════
    //  §10  HOOK: Same-origin iframes
    // ═══════════════════════════════════════════════════════════════════════
    function injectIntoIframe(iframe) {
        try {
            const cw = iframe.contentWindow;
            if (!cw || cw.__timeHookerActive) return;
            cw.__timeHookerActive = true;
            try { cw.Date = window.Date; } catch (_) {}
            try {
                Object.defineProperty(cw.Performance.prototype, 'now', {
                    value: () => vPerfNow(), writable: true, configurable: true
                });
            } catch (_) {
                try { cw.performance.now = () => vPerfNow(); } catch (_) {}
            }
            cw.setTimeout = window.setTimeout;
            cw.setInterval = window.setInterval;
            cw.clearTimeout = window.clearTimeout;
            cw.clearInterval = window.clearInterval;
            cw.requestAnimationFrame = window.requestAnimationFrame;
            cw.cancelAnimationFrame = window.cancelAnimationFrame;
        } catch (_) { /* cross-origin — skip silently */ }
    }

    function hookExistingIframes() {
        try { document.querySelectorAll('iframe').forEach(injectIntoIframe); } catch (_) {}
    }

    // Intercept iframe creation
    try {
        document.createElement = function (tag, ...args) {
            const el = _createElement(tag, ...args);
            if (typeof tag === 'string') {
                const t = tag.toLowerCase();
                if (t === 'iframe') {
                    el.addEventListener('load', () => injectIntoIframe(el), { once: false });
                }
                if (t === 'video' || t === 'audio') trackMedia(el);
            }
            return el;
        };
    } catch (_) {}

    // ═══════════════════════════════════════════════════════════════════════
    //  §11  HOOK: CSS Animations + Web Animations API
    // ═══════════════════════════════════════════════════════════════════════
    function speedUpAllAnimations() {
        try {
            const anims = document.getAnimations ? document.getAnimations() : [];
            for (const anim of anims) {
                try { anim.playbackRate = speedMultiplier; } catch (_) {}
            }
        } catch (_) {}
    }

    let _animPollId = null;
    function startAnimationPoll() {
        if (_animPollId) return;
        _animPollId = _setInterval(() => {
            if (speedMultiplier !== 1) speedUpAllAnimations();
        }, 500);
    }

    try {
        const _origAnimate = Element.prototype.animate;
        if (_origAnimate) {
            Element.prototype.animate = function (keyframes, options) {
                if (typeof options === 'number') {
                    options = options / speedMultiplier;
                } else if (options && typeof options === 'object') {
                    options = Object.assign({}, options);
                    if (options.duration != null && typeof options.duration === 'number')
                        options.duration = options.duration / speedMultiplier;
                    if (options.delay != null) options.delay = options.delay / speedMultiplier;
                    if (options.endDelay != null) options.endDelay = options.endDelay / speedMultiplier;
                }
                const anim = _origAnimate.call(this, keyframes, options);
                try { anim.playbackRate = speedMultiplier; } catch (_) {}
                return anim;
            };
            log('Web Animations API hooked');
        }
    } catch (e) { warn('Could not hook Web Animations API:', e); }

    // ═══════════════════════════════════════════════════════════════════════
    //  §12  MEDIA PLAYBACK-RATE SYNC
    // ═══════════════════════════════════════════════════════════════════════
    const _mediaElements = new Set();

    function syncMediaRate() {
        _mediaElements.forEach(el => {
            try { if (el.isConnected) el.playbackRate = speedMultiplier; } catch (_) {}
        });
    }
    function trackMedia(el) {
        if (el && (el instanceof HTMLMediaElement) && !_mediaElements.has(el)) {
            _mediaElements.add(el);
            try { el.playbackRate = speedMultiplier; } catch (_) {}
        }
    }

    // ═══════════════════════════════════════════════════════════════════════
    //  §13  RE-INJECTION GUARD (protect hooks from SPA overwriting)
    // ═══════════════════════════════════════════════════════════════════════
    const _ourImpls = {
        setTimeout:            window.setTimeout,
        setInterval:           window.setInterval,
        clearTimeout:          window.clearTimeout,
        clearInterval:         window.clearInterval,
        requestAnimationFrame: window.requestAnimationFrame,
        cancelAnimationFrame:  window.cancelAnimationFrame,
    };

    _setInterval(() => {
        for (const key of Object.keys(_ourImpls)) {
            if (window[key] !== _ourImpls[key]) {
                try { window[key] = _ourImpls[key]; } catch (_) {}
            }
        }
    }, 2000);

    // ═══════════════════════════════════════════════════════════════════════
    //  §14  SPEED SETTER (master function)
    // ═══════════════════════════════════════════════════════════════════════
    function setSpeed(s) {
        s = Math.max(0.01, Math.min(100, s));
        recalibrateClocks(s);

        // Restart tracked intervals at new rate
        const snap = new Map(_intervalMap);
        snap.forEach(({ fn, delay, args, wrapper }, vId) => {
            const entry = _intervalMap.get(vId);
            if (!entry) return;
            _clrInterval(entry.rId);
            const newRId = _setInterval(wrapper, Math.max(1, delay / speedMultiplier));
            entry.rId = newRId;
            _intervalMap.set(vId, entry);
        });

        broadcastSpeedToWorkers(s);
        syncMediaRate();
        speedUpAllAnimations();
        startAnimationPoll();
    }

    // ═══════════════════════════════════════════════════════════════════════
    //  §15  UI — only on top frame, Shadow DOM, polished design
    // ═══════════════════════════════════════════════════════════════════════
    const IS_TOP = (function () {
        try { return window.self === window.top; } catch (_) { return false; }
    })();
    log('IS_TOP =', IS_TOP);
    if (!IS_TOP) { log('Skipping UI (iframe — hooks still active)'); return; }

    const PRESETS = [0.1, 0.25, 0.5, 0.75, 1, 1.5, 2, 3, 5, 10, 20, 50];
    let _uiHost = null;
    let _refresh = null;

    function getParent() {
        return document.body || document.documentElement || null;
    }

    function buildUI() {
        if (_uiHost && _uiHost.isConnected) return true;
        const parent = getParent();
        if (!parent) { log('buildUI: no parent yet'); return false; }

        const host = _createElement('div');
        host.id = '__time-hooker-host';
        host.setAttribute('data-th', '1');
        host.style.cssText =
            'position:fixed!important;top:0!important;left:0!important;' +
            'width:0!important;height:0!important;overflow:visible!important;' +
            'z-index:2147483647!important;pointer-events:none!important;' +
            'opacity:1!important;visibility:visible!important;display:block!important;';

        let shadow;
        try { shadow = host.attachShadow({ mode: 'closed' }); }
        catch (_) { try { shadow = host.attachShadow({ mode: 'open' }); } catch (__) { shadow = null; } }

        let root;
        if (shadow) { root = shadow; }
        else { root = _createElement('div'); host.appendChild(root); }

        root.innerHTML = getTemplate();

        try { parent.appendChild(host); } catch (_) {
            try { document.documentElement.appendChild(host); } catch (__) { return false; }
        }
        _uiHost = host;

        // ── Refs ─────────────────────────────────────────────────────
        const $ = id => root.getElementById ? root.getElementById(id) : root.querySelector('#' + id);
        const bubble     = $('bubble');
        const panel      = $('panel');
        const grid       = $('grid');
        const badge      = $('badge');
        const speedLbl   = $('speedlbl');
        const slider     = $('slider');
        const sliderVal  = $('sliderval');
        const customIn   = $('customin');
        const applyBtn   = $('applybtn');
        const toggleBtn  = $('togglebtn');
        const hookStatus = $('hookstatus');

        if (!bubble || !panel) { warn('buildUI: elements not found'); return false; }

        let panelOpen = false;

        function refresh() {
            try {
                const s = speedMultiplier;
                badge.textContent     = s + 'x';
                speedLbl.textContent  = s + 'x';
                slider.value          = Math.min(s, parseFloat(slider.max));
                sliderVal.textContent = s + 'x';
                customIn.placeholder  = 'e.g. 7.5';

                (root.querySelectorAll ? root : root).querySelectorAll('.btn').forEach(b => {
                    b.classList.toggle('active', parseFloat(b.dataset.s) === s);
                    b.classList.toggle('disabled', !hookActive);
                });

                const clr = s > 1 ? '#22c55e' : s < 1 ? '#f59e0b' : '#64748b';
                badge.style.background = clr;
                speedLbl.style.color   = clr;
                hookStatus.textContent = hookActive ? 'Active' : 'Paused';
                hookStatus.style.color = hookActive ? '#22c55e' : '#f87171';
                toggleBtn.classList.toggle('on', hookActive);
            } catch (_) {}
        }
        _refresh = refresh;

        // ── Preset buttons ───────────────────────────────────────────
        PRESETS.forEach(s => {
            const b = _createElement('div');
            b.className = 'btn';
            b.dataset.s = s;
            b.textContent = s + 'x';
            b.addEventListener('click', e => {
                e.stopPropagation();
                if (!hookActive) return;
                setSpeed(s); refresh();
            });
            grid.appendChild(b);
        });

        // ── Bubble toggle ────────────────────────────────────────────
        bubble.addEventListener('click', e => {
            e.stopPropagation();
            panelOpen = !panelOpen;
            panel.classList.toggle('show', panelOpen);
            bubble.classList.toggle('open', panelOpen);
        });

        // composedPath() for shadow DOM click detection
        document.addEventListener('click', e => {
            if (panelOpen && !e.composedPath().includes(host)) {
                panelOpen = false;
                panel.classList.remove('show');
                bubble.classList.remove('open');
            }
        }, { capture: false });

        panel.addEventListener('click', e => e.stopPropagation());

        // ── Slider ───────────────────────────────────────────────────
        slider.addEventListener('input', e => {
            e.stopPropagation();
            if (!hookActive) return;
            const v = Math.round(parseFloat(e.target.value) * 100) / 100;
            setSpeed(v); refresh();
        });

        // ── Custom speed ─────────────────────────────────────────────
        function applyCustom() {
            const v = parseFloat(customIn.value);
            if (isFinite(v) && v > 0 && v <= 100) {
                setSpeed(v); refresh(); customIn.value = '';
            } else {
                customIn.style.borderColor = '#f87171';
                _setTimeout(() => { customIn.style.borderColor = ''; }, 800);
            }
        }
        applyBtn.addEventListener('click', e => { e.stopPropagation(); applyCustom(); });
        customIn.addEventListener('keydown', e => { e.stopPropagation(); if (e.key === 'Enter') applyCustom(); });
        customIn.addEventListener('keyup', e => e.stopPropagation());
        customIn.addEventListener('keypress', e => e.stopPropagation());

        // ── Toggle hook on/off (remembers speed) ─────────────────────
        toggleBtn.addEventListener('click', e => {
            e.stopPropagation();
            hookActive = !hookActive;
            if (!hookActive) {
                savedSpeed = speedMultiplier;
                setSpeed(1); refresh();
            } else {
                setSpeed(savedSpeed); refresh();
            }
        });

        // ── Keyboard shortcuts (capture phase) ───────────────────────
        document.addEventListener('keydown', e => {
            if (!e.altKey) return;
            const key = e.key.toLowerCase();
            if (key === 't') { e.preventDefault(); bubble.click(); return; }
            if (key === 'r') { e.preventDefault(); if (hookActive) { setSpeed(1); refresh(); } return; }
            if (e.key === 'ArrowUp') {
                e.preventDefault();
                if (!hookActive) return;
                const idx = PRESETS.indexOf(speedMultiplier);
                const next = idx !== -1 && idx < PRESETS.length - 1
                    ? PRESETS[idx + 1]
                    : Math.min(100, parseFloat((speedMultiplier * 1.5).toFixed(2)));
                setSpeed(next); refresh();
            }
            if (e.key === 'ArrowDown') {
                e.preventDefault();
                if (!hookActive) return;
                const idx = PRESETS.indexOf(speedMultiplier);
                const prev = idx > 0
                    ? PRESETS[idx - 1]
                    : Math.max(0.01, parseFloat((speedMultiplier / 1.5).toFixed(2)));
                setSpeed(prev); refresh();
            }
        }, { capture: true });

        refresh();
        log('UI injected successfully!');
        return true;
    }

    // ═══════════════════════════════════════════════════════════════════════
    //  §16  SHADOW DOM TEMPLATE (polished dark design)
    // ═══════════════════════════════════════════════════════════════════════
    function getTemplate() {
        return '<style>' +
'*, *::before, *::after { box-sizing:border-box; margin:0; padding:0; }' +

'#bubble {' +
'  position:fixed; top:50%; left:0; z-index:2147483647;' +
'  transform:translateX(-42px) translateY(-50%);' +
'  transition:transform .28s cubic-bezier(.4,0,.2,1), box-shadow .28s;' +
'  width:58px; height:58px; border-radius:0 18px 18px 0;' +
'  background:rgba(34,197,94,.55); backdrop-filter:blur(6px);' +
'  border:1px solid rgba(34,197,94,.3); border-left:none;' +
'  display:flex; align-items:center; justify-content:flex-end;' +
'  padding-right:9px; cursor:pointer; user-select:none;' +
'  box-shadow:2px 0 16px rgba(0,0,0,.25); pointer-events:auto;' +
'  font-family:"Segoe UI",system-ui,-apple-system,sans-serif;' +
'}' +
'#bubble:hover, #bubble.open {' +
'  transform:translateX(0) translateY(-50%);' +
'  background:rgba(34,197,94,.82);' +
'  box-shadow:4px 0 28px rgba(34,197,94,.45);' +
'}' +
'#bubble svg {' +
'  width:26px; height:26px; fill:#fff;' +
'  transition:transform .28s, fill .2s;' +
'  filter:drop-shadow(0 1px 2px rgba(0,0,0,.3));' +
'}' +
'#bubble:hover svg { transform:rotate(12deg) scale(1.1); fill:#fff; }' +

'#badge {' +
'  position:absolute; top:-5px; right:-3px;' +
'  background:#64748b; color:#f1f5f9;' +
'  font-size:8.5px; font-weight:700; letter-spacing:.3px;' +
'  padding:2px 5px; border-radius:6px; line-height:1.4;' +
'  box-shadow:0 1px 6px rgba(0,0,0,.4); pointer-events:none;' +
'  font-family:"Segoe UI",system-ui,sans-serif; transition:background .2s;' +
'}' +

'#panel {' +
'  position:fixed; top:50%; left:66px; z-index:2147483647;' +
'  transform:translateY(-50%) scale(.9) translateX(-10px);' +
'  opacity:0; pointer-events:none;' +
'  transition:opacity .2s ease, transform .2s ease;' +
'  background:rgba(10,14,26,.95); backdrop-filter:blur(18px);' +
'  border:1px solid rgba(255,255,255,.08); border-radius:18px;' +
'  padding:18px 20px; min-width:260px; max-height:92vh; overflow-y:auto;' +
'  box-shadow:0 12px 40px rgba(0,0,0,.55), inset 0 1px 0 rgba(255,255,255,.05);' +
'  color:#e2e8f0; font-family:"Segoe UI",system-ui,sans-serif; font-size:13px;' +
'}' +
'#panel.show {' +
'  opacity:1; transform:translateY(-50%) scale(1) translateX(0);' +
'  pointer-events:auto;' +
'}' +

'.label {' +
'  color:rgba(255,255,255,.38); font-size:9.5px; font-weight:700;' +
'  letter-spacing:1.6px; text-transform:uppercase; margin-bottom:10px;' +
'  display:flex; align-items:center; gap:5px;' +
'  font-family:"Segoe UI",system-ui,sans-serif;' +
'}' +
'.label svg { fill:rgba(255,255,255,.3); flex-shrink:0; }' +

'#speedlbl {' +
'  display:block; text-align:center; margin-bottom:14px;' +
'  font-size:28px; font-weight:800; letter-spacing:-1px;' +
'  transition:color .2s; font-variant-numeric:tabular-nums;' +
'  font-family:"Segoe UI",system-ui,sans-serif;' +
'}' +

'.sep { height:1px; background:rgba(255,255,255,.06); margin:12px 0; }' +

'#grid {' +
'  display:grid; grid-template-columns:repeat(4,1fr); gap:5px; margin-bottom:4px;' +
'}' +
'.btn {' +
'  padding:7px 2px; border-radius:8px;' +
'  border:1px solid rgba(255,255,255,.07);' +
'  background:rgba(255,255,255,.04);' +
'  color:#94a3b8; font-size:12px; font-weight:500;' +
'  text-align:center; cursor:pointer; transition:all .15s;' +
'  font-family:"Segoe UI",system-ui,sans-serif;' +
'}' +
'.btn:hover:not(.disabled) {' +
'  background:rgba(34,197,94,.15); border-color:rgba(34,197,94,.4); color:#fff;' +
'}' +
'.btn.active {' +
'  background:rgba(34,197,94,.2); border-color:#22c55e;' +
'  color:#22c55e; font-weight:700; box-shadow:0 0 12px rgba(34,197,94,.18);' +
'}' +
'.btn.disabled { opacity:.35; cursor:not-allowed; }' +

'.slider-row {' +
'  display:flex; align-items:center; gap:8px; margin-bottom:4px;' +
'}' +
'.slider-row .lbl { color:rgba(255,255,255,.4); font-size:11px; white-space:nowrap; }' +
'.slider-row .val { color:#22c55e; font-size:11.5px; font-weight:700; min-width:44px; text-align:right; font-variant-numeric:tabular-nums; }' +

'input[type=range] {' +
'  -webkit-appearance:none; appearance:none; flex:1; height:3px;' +
'  border-radius:2px; background:rgba(255,255,255,.12); outline:none; cursor:pointer;' +
'}' +
'input[type=range]::-webkit-slider-thumb {' +
'  -webkit-appearance:none; width:14px; height:14px; border-radius:50%;' +
'  background:#22c55e; border:2px solid #052e16; cursor:pointer;' +
'  box-shadow:0 0 6px rgba(34,197,94,.4);' +
'}' +
'input[type=range]::-moz-range-thumb {' +
'  width:14px; height:14px; border-radius:50%;' +
'  background:#22c55e; border:none; cursor:pointer;' +
'}' +

'.custom-row { display:flex; gap:6px; align-items:center; }' +
'.custom-row input {' +
'  flex:1; padding:7px 9px; border-radius:8px; font-size:12.5px;' +
'  border:1px solid rgba(255,255,255,.1); background:rgba(255,255,255,.06);' +
'  color:#e2e8f0; outline:none; width:0; min-width:0;' +
'  font-family:"Segoe UI",system-ui,sans-serif; transition:border-color .15s;' +
'}' +
'.custom-row input:focus { border-color:#22c55e; }' +
'.custom-row button {' +
'  padding:7px 13px; border-radius:8px; border:none;' +
'  background:#22c55e; color:#052e16; font-size:12px; font-weight:700;' +
'  cursor:pointer; transition:background .15s, transform .1s;' +
'  font-family:"Segoe UI",system-ui,sans-serif; white-space:nowrap;' +
'}' +
'.custom-row button:hover { background:#16a34a; }' +
'.custom-row button:active { transform:scale(.95); }' +

'.row { display:flex; align-items:center; justify-content:space-between; gap:8px; }' +
'.row .lbl { color:rgba(255,255,255,.55); font-size:12px; }' +
'#hookstatus { font-size:11px; font-weight:600; transition:color .2s; }' +

'.toggle {' +
'  position:relative; width:38px; height:20px; border-radius:10px;' +
'  background:rgba(255,255,255,.12); cursor:pointer; transition:background .2s;' +
'  border:none; padding:0; flex-shrink:0;' +
'}' +
'.toggle.on { background:#22c55e; }' +
'.toggle::after {' +
'  content:""; position:absolute; top:2px; left:2px;' +
'  width:16px; height:16px; border-radius:50%;' +
'  background:#fff; transition:transform .2s;' +
'  box-shadow:0 1px 3px rgba(0,0,0,.3);' +
'}' +
'.toggle.on::after { transform:translateX(18px); }' +

'.hint {' +
'  display:block; margin-top:10px; text-align:center;' +
'  color:rgba(255,255,255,.22); font-size:9.5px; line-height:1.9;' +
'  font-family:"Segoe UI",system-ui,sans-serif;' +
'}' +
'.hint kbd {' +
'  background:rgba(255,255,255,.08); padding:1px 4px; border-radius:3px;' +
'  font-size:9px; color:rgba(255,255,255,.4); font-family:monospace;' +
'  border:1px solid rgba(255,255,255,.1);' +
'}' +
'</style>' +

'<div id="bubble">' +
'  <svg viewBox="0 0 24 24"><path d="M12 2a10 10 0 1 0 0 20 10 10 0 0 0 0-20zm0 18a8 8 0 1 1 0-16 8 8 0 0 1 0 16zm.5-13H11v6l5.25 3.15.75-1.23-4.5-2.67V7z"/></svg>' +
'  <span id="badge">1x</span>' +
'</div>' +

'<div id="panel">' +
'  <div class="label">' +
'    <svg width="11" height="11" viewBox="0 0 24 24"><path d="M12 2a10 10 0 1 0 0 20 10 10 0 0 0 0-20zm0 18a8 8 0 1 1 0-16 8 8 0 0 1 0 16zm.5-13H11v6l5.25 3.15.75-1.23-4.5-2.67V7z"/></svg>' +
'    TIME HOOKER v4' +
'  </div>' +
'  <span id="speedlbl">1x</span>' +
'  <div class="label" style="margin-bottom:8px">Presets</div>' +
'  <div id="grid"></div>' +
'  <div class="sep"></div>' +
'  <div class="label" style="margin-bottom:8px">Fine-tune</div>' +
'  <div class="slider-row">' +
'    <span class="lbl">0.05x</span>' +
'    <input type="range" id="slider" min="0.05" max="50" step="0.05" value="1">' +
'    <span class="val" id="sliderval">1x</span>' +
'  </div>' +
'  <div class="sep"></div>' +
'  <div class="label" style="margin-bottom:8px">Custom Speed</div>' +
'  <div class="custom-row">' +
'    <input type="number" id="customin" placeholder="e.g. 7.5" min="0.01" max="100" step="0.01">' +
'    <button id="applybtn">Set</button>' +
'  </div>' +
'  <div class="sep"></div>' +
'  <div class="row">' +
'    <span class="lbl">Hook</span>' +
'    <span id="hookstatus">Active</span>' +
'    <button class="toggle on" id="togglebtn"></button>' +
'  </div>' +
'  <span class="hint">' +
'    <kbd>Alt</kbd>+<kbd>T</kbd> panel &middot; <kbd>Alt</kbd>+<kbd>R</kbd> reset<br>' +
'    <kbd>Alt</kbd>+<kbd>&uarr;</kbd>/<kbd>&darr;</kbd> step speed' +
'  </span>' +
'</div>';
    }

    // ═══════════════════════════════════════════════════════════════════════
    //  §17  ROBUST BOOT (5-strategy)
    // ═══════════════════════════════════════════════════════════════════════
    let _booted = false;

    function tryBoot() {
        if (_booted) return;
        log('tryBoot | body =', !!document.body, '| docElem =', !!document.documentElement);
        if (buildUI()) {
            _booted = true;
            startWatchdog();
            hookExistingIframes();
            scanExistingMedia();
            if (speedMultiplier !== 1) { speedUpAllAnimations(); startAnimationPoll(); }
        }
    }

    // Strategy 1: direct
    tryBoot();
    // Strategy 2: DOMContentLoaded
    document.addEventListener('DOMContentLoaded', tryBoot, { once: true });
    // Strategy 3: readystatechange
    document.addEventListener('readystatechange', tryBoot);
    // Strategy 4: MutationObserver
    try {
        const target = document.documentElement || document;
        const bootObs = new _MO(() => { tryBoot(); if (_booted) bootObs.disconnect(); });
        bootObs.observe(target, { childList: true, subtree: true });
        _setTimeout(() => { bootObs.disconnect(); tryBoot(); }, 30000);
    } catch (_) {}
    // Strategy 5: polling
    const _poll = _setInterval(() => { tryBoot(); if (_booted) _clrInterval(_poll); }, 50);
    _setTimeout(() => _clrInterval(_poll), 30000);

    // ═══════════════════════════════════════════════════════════════════════
    //  §18  WATCHDOG — re-inject UI + watch body replacement + iframes
    // ═══════════════════════════════════════════════════════════════════════
    function startWatchdog() {
        _setInterval(() => {
            if (!_uiHost || !_uiHost.isConnected) {
                _uiHost = null; _booted = false; tryBoot();
            }
        }, 2000);

        try {
            const bodyObs = new _MO(muts => {
                for (const m of muts) {
                    for (const node of m.removedNodes) {
                        if (node === _uiHost || (node.nodeType === 1 && node.tagName === 'BODY')) {
                            _uiHost = null; _booted = false;
                            _setTimeout(tryBoot, 100);
                            return;
                        }
                    }
                }
            });
            bodyObs.observe(document.documentElement || document, { childList: true, subtree: false });
        } catch (_) {}

        // Watch for dynamically added iframes
        try {
            const ifrObs = new _MO(muts => {
                muts.forEach(m => m.addedNodes.forEach(n => {
                    if (n.tagName === 'IFRAME') injectIntoIframe(n);
                    else if (n.querySelectorAll) {
                        try { n.querySelectorAll('iframe').forEach(injectIntoIframe); } catch (_) {}
                    }
                }));
            });
            ifrObs.observe(document.documentElement, { childList: true, subtree: true });
        } catch (_) {}
    }

    // ═══════════════════════════════════════════════════════════════════════
    //  §19  SCAN EXISTING MEDIA
    // ═══════════════════════════════════════════════════════════════════════
    function scanExistingMedia() {
        try { document.querySelectorAll('video, audio').forEach(trackMedia); } catch (_) {}
        try {
            const mediaObs = new _MO(muts => {
                for (const m of muts) {
                    for (const node of m.addedNodes) {
                        if (node.nodeType !== 1) continue;
                        if (/^(VIDEO|AUDIO)$/i.test(node.tagName)) trackMedia(node);
                        try { node.querySelectorAll && node.querySelectorAll('video, audio').forEach(trackMedia); } catch (_) {}
                    }
                }
            });
            mediaObs.observe(document.documentElement || document, { childList: true, subtree: true });
        } catch (_) {}
    }

})();