EP Hacks

EP Answer Helper + Anti-Snitch + Maths Solver + MCQ + Gaps + Dropdowns + Auto-Skip + Hotkey

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

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

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

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

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

You will need to install a user script manager extension to install this script.

(I already have a user script manager, let me install it!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name         EP Hacks
// @namespace    http://tampermonkey.net/
// @version      10.2
// @description  EP Answer Helper + Anti-Snitch + Maths Solver + MCQ + Gaps + Dropdowns + Auto-Skip + Hotkey
// @match        https://app.educationperfect.com/*
// @grant        none
// @run-at       document-start
// ==/UserScript==

(function () {
  "use strict";

  // ── EXAM BYPASS ───────────────────────────────────────────────
  document.addEventListener('contextmenu', e => e.stopImmediatePropagation(), true);
  document.addEventListener('selectstart', e => e.stopImmediatePropagation(), true);
  document.addEventListener('copy',        e => e.stopImmediatePropagation(), true);

  // ── ANTI-SNITCH ───────────────────────────────────────────────
  let antiSnitchActive = true;

  function stopSnitch(e) { if (antiSnitchActive) e.stopImmediatePropagation(); }

  function applyAntiSnitchSpoof() {
    try {
      Object.defineProperty(document, 'visibilityState', { get: () => antiSnitchActive ? 'visible' : 'hidden', configurable: true });
      Object.defineProperty(document, 'hidden',          { get: () => antiSnitchActive ? false : true, configurable: true });
      const origHasFocus = document.hasFocus.bind(document);
      document.hasFocus = () => antiSnitchActive ? true : origHasFocus();
    } catch(e) {}
  }
  applyAntiSnitchSpoof();

  document.addEventListener('visibilitychange',       stopSnitch, true);
  window.addEventListener('blur',                     stopSnitch, true);
  window.addEventListener('focus',                    stopSnitch, true);
  window.addEventListener('pagehide',                 stopSnitch, true);
  document.addEventListener('fullscreenchange',       stopSnitch, true);
  document.addEventListener('webkitfullscreenchange', stopSnitch, true);

  setInterval(() => {
    if (!antiSnitchActive) return;
    document.dispatchEvent(new MouseEvent('mousemove', {
      bubbles: true, clientX: 200 + Math.random() * 400, clientY: 200 + Math.random() * 300,
    }));
  }, 3000);

  // ── AUTO-SKIP ─────────────────────────────────────────────────
  let autoSkipActive = false;

  setInterval(() => {
    try {
      if (!autoSkipActive) return;
      const infoSlide =
        document.querySelector('.h-group.v-align-center.expanded-content.information.selected') ||
        document.querySelector('[class*="information"][class*="selected"]') ||
        document.querySelector('[class*="info-slide"][class*="active"]');
      if (!infoSlide) return;
      document.querySelectorAll('.continue.arrow.action-bar-button.v-group.ng-isolate-scope button, [class*="continue"][class*="action"] button').forEach(btn => btn.click());
    } catch(e) {}
  }, 100);

  // ── HELPERS ───────────────────────────────────────────────────

  function getScope() {
    try {
      if (!window.angular) return null;
      const selectors = ['.lp-answer-input', '[class*="answer-input"]', '[class*="lp-answer"]'];
      for (const sel of selectors) {
        const el = document.querySelector(sel);
        if (el) {
          const scope = angular.element(el).scope();
          if (scope?.self?.model) return scope;
        }
      }
      const input = [...document.querySelectorAll('#answer-text, [id*="answer"]')].find(el => el.tagName === 'INPUT');
      if (input) return angular.element(input).scope();
      return null;
    } catch(e) { return null; }
  }

  function getQuestion() {
    try { return getScope()?.self?.model?._currentQuestion || null; }
    catch(e) { return null; }
  }

  function parseArr(expr) {
    const match = expr?.match(/\[([^\]]+)\]/);
    if (!match) return null;
    return match[1].split(',').map(s => s.replace(/['"]/g, '').trim());
  }

  function resolveVars(vars, rng) {
    const resolved = { rng };
    vars?.forEach(v => {
      if (v.Name === 'rng') return;
      if (v.value !== null && v.value !== undefined && !v.expression) {
        resolved[v.Name] = String(v.value);
      } else if (v.expression?.includes('[rng]')) {
        const arr = parseArr(v.expression);
        if (arr) resolved[v.Name] = arr[rng];
      }
    });
    return resolved;
  }

  function needsDegreeSymbol() {
    try { return /degree symbol|include.*°|°.*symbol/i.test(document.body?.innerText || ''); }
    catch(e) { return false; }
  }

  // ── FULL PAGE CONTEXT SCRAPER ─────────────────────────────────
  function scrapeFullContext() {
    const parts = [];

    try {
      const q = getQuestion();
      if (q) {
        const displayName = q.specifiedDisplayName || q.displayName || q.name;
        if (displayName) parts.push('Question topic: ' + displayName);

        const def = q.questionDef;
        if (def) {
          def.Components?.forEach(c => {
            if (c.Text) parts.push('Question: ' + c.Text.replace(/<[^>]+>/g, ' ').replace(/\s+/g, ' ').trim());
            if (c.ComponentTypeCode === 'FILL_IN_GAPS_COMPONENT') {
              const gapText = c.Template?.replace(/<[^>]+>/g, ' ').replace(/\s+/g, ' ').trim();
              if (gapText) parts.push('Fill in gaps sentence: ' + gapText);
            }
            if (c.Options?.length) {
              const opts = c.Options.map((o, i) => `${i + 1}. ${o.TextTemplate?.replace(/`/g,'') || o.Text || ''}`).join(', ');
              parts.push('Answer options: ' + opts);
            }
          });

          const wordList = def.WordList || def.wordList;
          if (wordList?.length) {
            parts.push('Word bank: ' + wordList.map(w => w.word || w.Word || w).join(', '));
          }
        }

        const validAns = q.validAnswers?.map(a => a.outputString).filter(Boolean);
        if (validAns?.length) parts.push('Correct answer hint: ' + validAns.join(' / '));
      }
    } catch(e) {}

    const domSelectors = [
      '.block-title', '.question-text', '.lp-question-text',
      '[class*="question-prompt"]', '[class*="question-title"]',
      '[class*="question-body"]',  '[class*="question-content"]',
      '[class*="task-description"]', '[class*="task-content"]',
      '[class*="activity-description"]',
      '.ng-binding', '[class*="content-text"]',
      'img[alt]',
      '[class*="word-display"]', '[class*="target-word"]',
      '[class*="foreign-word"]', '[class*="native-word"]',
      '[class*="translation"]',
    ];

    const seen = new Set();
    domSelectors.forEach(sel => {
      document.querySelectorAll(sel).forEach(el => {
        if (!el.offsetParent && el.tagName !== 'IMG') return;
        if (el.closest('#ep-hacks-panel, #ep-claude-popup')) return;

        let text;
        if (el.tagName === 'IMG') {
          text = el.alt?.trim();
          if (text) text = '[Image: ' + text + ']';
        } else {
          text = el.innerText?.trim().replace(/\s+/g, ' ');
        }

        if (!text || text.length < 3 || text.length > 1200) return;
        if (seen.has(text)) return;
        seen.add(text);
        parts.push(text);
      });
    });

    const mcqBtns = [...document.querySelectorAll('.mcq-preview-option')].filter(b => b.offsetParent !== null);
    if (mcqBtns.length) {
      const opts = mcqBtns.map((b, i) => `${i + 1}. ${b.innerText.trim()}`).join(' | ');
      if (!seen.has(opts)) parts.push('Multiple choice options: ' + opts);
    }

    const gapInputs = document.querySelectorAll('input[class*="gap"], [class*="gap-input"], [class*="blank-input"]');
    if (gapInputs.length) {
      const parent = gapInputs[0].closest('[class*="gap"], [class*="sentence"], p, div') || gapInputs[0].parentElement;
      const gapCtx = parent?.innerText?.trim().replace(/\s+/g, ' ');
      if (gapCtx && !seen.has(gapCtx)) parts.push('Sentence with gaps: ' + gapCtx);
    }

    const unique = [...new Set(parts)].filter(Boolean);
    return unique.join('\n');
  }

  // ── BUILT-IN ANSWER GETTERS (local, no API) ───────────────────

  function getStandardAnswer() {
    try {
      const q = getQuestion();
      if (!q) return null;
      const answer = q.validAnswers?.[0]?.outputString;
      if (!answer) return null;
      return { answer, prompt: q.specifiedDisplayName || null, type: 'standard' };
    } catch(e) { return null; }
  }

  function getMCQAnswer() {
    try {
      const q = getQuestion();
      if (!q || q.questionType !== 6) return null;

      const components = q.questionDef?.Components;
      if (!components?.length) return null;

      const correctOptions = [];
      components.forEach(c => {
        if (!c.Options?.length) return;
        c.Options.forEach(o => {
          if (o.Correct === 'true' || o.Correct === true) correctOptions.push(o);
        });
      });
      if (!correctOptions.length) return null;

      const container = document.querySelector('.multi-choice-component');
      const allBtns = [...document.querySelectorAll('.mcq-preview-option')].filter(b => b.offsetParent !== null);
      const buttons = container ? [...container.querySelectorAll('.mcq-preview-option')].filter(b => b.offsetParent !== null) : allBtns;
      if (!buttons.length) return null;

      const cleanBtn = s => s.replace(/\n+\d+\s*$/, '').replace(/\s+/g, ' ').trim().toLowerCase();
      const cleanOpt = s => s.replace(/\s+/g, ' ').trim().toLowerCase();
      const strip    = s => s.replace(/[^a-z0-9]/g, '');

      document.querySelectorAll('.mcq-preview-option').forEach(btn => {
        btn.style.outline = '';
        btn.style.borderRadius = '';
      });

      correctOptions.forEach(opt => {
        const optClean = cleanOpt(opt.TextTemplate || opt.Text || '');
        const optStrip = strip(optClean);

        let bestBtn = null, bestScore = -1;
        buttons.forEach(btn => {
          const btnClean = cleanBtn(btn.innerText || '');
          const btnStrip = strip(btnClean);

          let score = 0;
          if (btnClean === optClean)                                          score = 100;
          else if (btnStrip === optStrip)                                     score = 90;
          else if (btnStrip.includes(optStrip) || optStrip.includes(btnStrip)) score = 70;
          else {
            let j = 0;
            for (let i = 0; i < btnStrip.length && j < optStrip.length; i++) {
              if (btnStrip[i] === optStrip[j]) j++;
            }
            score = Math.round((j / Math.max(optStrip.length, 1)) * 60);
          }

          if (score > bestScore) { bestScore = score; bestBtn = btn; }
        });

        if (bestBtn && bestScore >= 50) {
          bestBtn.style.outline = '3px solid #3fb950';
          bestBtn.style.borderRadius = '6px';
        }
      });

      const correctTexts = correctOptions.map(o => (o.TextTemplate || o.Text || '').trim());
      const answerDisplay = correctTexts.join('  |  ');
      const prompt = correctOptions.length > 1 ? `${correctOptions.length} correct options (green)` : 'Select green option';

      return { answer: answerDisplay, prompt, type: 'mcq' };
    } catch(e) { return null; }
  }

  function getFillGapsAnswer() {
    try {
      const q = getQuestion();
      if (!q) return null;
      const comp = q.questionDef?.Components?.find(c => c.ComponentTypeCode === 'FILL_IN_GAPS_COMPONENT');
      if (!comp?.Gaps?.length) return null;
      const answers = comp.Gaps.map((gap, i) => `Box ${i+1}: ${gap.CorrectOptions?.[0] || '?'}`);
      return { answer: answers.join('  |  '), prompt: `Fill in ${comp.Gaps.length} gap${comp.Gaps.length>1?'s':''}`, type: 'gaps' };
    } catch(e) { return null; }
  }

  // ── DROPDOWN ANSWER ───────────────────────────────────────────
  // EP uses DROPDOWN_COMPONENT with Options[].{Description, Correct}.
  // ComponentID matches the <select> id (e.g. "DropDown_1").
  // Options are shuffled on screen — we match by Description text.

  function getDropdownAnswer() {
    try {
      const q = getQuestion();
      if (!q) return null;

      const dropdownComps = q.questionDef?.Components?.filter(
        c => c.ComponentTypeCode === 'DROPDOWN_COMPONENT'
      );
      if (!dropdownComps?.length) return null;

      // Clean up any leftover styling/marks from previous runs
      document.querySelectorAll('select[id^="DropDown"]').forEach(sel => {
        sel.style.outline      = '';
        sel.style.borderRadius = '';
        sel.style.boxShadow    = '';
        [...sel.options].forEach(opt => {
          if (opt.dataset.origText) {
            opt.text = opt.dataset.origText;
            delete opt.dataset.origText;
          }
        });
      });

      const answers = [];

      dropdownComps.forEach((comp, idx) => {
        // Find the correct option — Correct === 'true' or true
        const correctOpt = comp.Options?.find(
          o => o.Correct === 'true' || o.Correct === true
        );
        if (!correctOpt) { answers.push(`Dropdown ${idx + 1}: ?`); return; }

        const correctText = correctOpt.Description?.trim();
        if (!correctText) { answers.push(`Dropdown ${idx + 1}: ?`); return; }

        answers.push(`Dropdown ${idx + 1}: ${correctText}`);
      });

      if (!answers.length) return null;

      const answerText = answers.join('  |  ');
      const prompt = `Select from dropdown${dropdownComps.length > 1 ? 's' : ''}`;
      return { answer: answerText, prompt, type: 'dropdown' };
    } catch(e) { return null; }
  }

  // Clean up dropdown ✓ marks when question changes
  function cleanDropdownMarks() {
    document.querySelectorAll('select[id^="DropDown"] option').forEach(opt => {
      if (opt.dataset.origText) {
        opt.text = opt.dataset.origText;
        delete opt.dataset.origText;
      }
    });
    document.querySelectorAll('select[id^="DropDown"]').forEach(sel => {
      sel.style.outline = '';
      sel.style.borderRadius = '';
      sel.style.boxShadow = '';
    });
  }

  function getMathsAnswer() {
    try {
      const q = getQuestion();
      if (!q || q.questionType !== 6) return null;
      const vars = q.questionGeneratedVariables;
      if (!vars?.length) return null;
      const visibleBtns = [...document.querySelectorAll('.mcq-preview-option')].filter(b => b.offsetParent !== null);
      if (visibleBtns.length) return null;
      const rng = vars.find(v => v.Name === 'rng')?.value || 0;
      const resolved = {};
      vars.forEach(v => {
        if (v.Name === 'rng') { resolved.rng = rng; return; }
        if (v.value !== null && v.value !== undefined && !v.expression) resolved[v.Name] = v.value;
        else if (v.expression?.includes('[rng]')) { const arr = parseArr(v.expression); if (arr) resolved[v.Name] = parseFloat(arr[rng]); }
      });
      const answerVar = vars.find(v => ['answer','ans','rans'].includes(v.Name));
      if (!answerVar?.expression) return null;
      let expr = answerVar.expression
        .replace(/fix\(([^,]+),(\d+)\)/g,'parseFloat(($1).toFixed($2))')
        .replace(/\bpi\b/g,'Math.PI').replace(/\bcos\b/g,'Math.cos').replace(/\bsin\b/g,'Math.sin')
        .replace(/\btan\b/g,'Math.tan').replace(/\bsqrt\b/g,'Math.sqrt').replace(/\babs\b/g,'Math.abs')
        .replace(/\bround\b/g,'Math.round').replace(/(?<!Math\.)asin\b/g,'Math.asin')
        .replace(/(?<!Math\.)acos\b/g,'Math.acos').replace(/(?<!Math\.)atan\b/g,'Math.atan');
      Object.keys(resolved).sort((a,b)=>b.length-a.length).forEach(k => {
        expr = expr.replace(new RegExp('\\b'+k+'\\b','g'), String(resolved[k]));
      });
      let answer;
      try { answer = eval(expr); } catch(e) { return null; }
      if (isNaN(answer) || !isFinite(answer)) return null;
      const deg = needsDegreeSymbol() ? '°' : '';
      return { answer: String(answer)+deg, prompt: `🧮 ${answerVar.expression}`, type: 'maths' };
    } catch(e) { return null; }
  }

  function getAnswer() {
    return getStandardAnswer() || getMCQAnswer() || getFillGapsAnswer() || getDropdownAnswer() || getMathsAnswer();
  }

  // ── CLAUDE API KEY ────────────────────────────────────────────
  let CLAUDE_API_KEY = sessionStorage.getItem('ep_claude_key') || '';

  // ── HOTKEY TOAST ──────────────────────────────────────────────
  function showToast(msg, color = '#58a6ff', duration = 2200) {
    document.getElementById('ep-toast')?.remove();
    const t = document.createElement('div');
    t.id = 'ep-toast';
    t.style.cssText = `
      position:fixed;bottom:32px;left:50%;transform:translateX(-50%);
      z-index:9999999;background:#0f1117;color:${color};
      border:1px solid ${color}33;border-radius:10px;
      padding:10px 20px;font-family:'Fira Code',monospace;font-size:13px;
      font-weight:600;box-shadow:0 4px 24px rgba(0,0,0,0.5);
      pointer-events:none;white-space:nowrap;
      animation:ep-fadein 0.15s ease;
    `;
    t.textContent = msg;

    if (!document.getElementById('ep-anim-style')) {
      const s = document.createElement('style');
      s.id = 'ep-anim-style';
      s.textContent = `
        @keyframes ep-fadein { from { opacity:0; transform:translateX(-50%) translateY(8px); } to { opacity:1; transform:translateX(-50%) translateY(0); } }
        @keyframes ep-spin { from { transform:rotate(0deg); } to { transform:rotate(360deg); } }
      `;
      document.head.appendChild(s);
    }

    document.body.appendChild(t);
    setTimeout(() => t.remove(), duration);
    return t;
  }

  function showLoadingToast() {
    document.getElementById('ep-toast')?.remove();
    const t = document.createElement('div');
    t.id = 'ep-toast';
    t.style.cssText = `
      position:fixed;bottom:32px;left:50%;transform:translateX(-50%);
      z-index:9999999;background:#0f1117;color:#58a6ff;
      border:1px solid #58a6ff33;border-radius:10px;
      padding:10px 20px;font-family:'Fira Code',monospace;font-size:13px;
      font-weight:600;box-shadow:0 4px 24px rgba(0,0,0,0.5);
      pointer-events:none;white-space:nowrap;
      display:flex;align-items:center;gap:10px;
    `;
    t.innerHTML = `
      <div style="
        width:14px;height:14px;border:2px solid #58a6ff44;
        border-top-color:#58a6ff;border-radius:50%;
        animation:ep-spin 0.7s linear infinite;flex-shrink:0;
      "></div>
      <span>Asking Claude...</span>
    `;
    document.body.appendChild(t);
    return t;
  }

  // ── HOTKEY: SHIFT + ALT + A ───────────────────────────────────
  let hotkeyBusy = false;

  async function hotkeyAskClaude() {
    if (hotkeyBusy) return;
    hotkeyBusy = true;

    if (!CLAUDE_API_KEY) {
      showToast('⚠ No API key — open Claude panel first', '#f78166');
      const popup = document.getElementById('ep-claude-popup');
      if (popup) { popup.style.display = 'flex'; showKeyScreen(); }
      hotkeyBusy = false;
      return;
    }

    const context = scrapeFullContext();
    if (!context || context.length < 5) {
      showToast('⚠ No question found on screen', '#f78166');
      hotkeyBusy = false;
      return;
    }

    const loadingToast = showLoadingToast();

    try {
      const response = await fetch('https://api.anthropic.com/v1/messages', {
        method: 'POST',
        headers: {
          'Content-Type': 'application/json',
          'x-api-key': CLAUDE_API_KEY,
          'anthropic-version': '2023-06-01',
          'anthropic-dangerous-direct-browser-access': 'true',
        },
        body: JSON.stringify({
          model: 'claude-haiku-4-5-20251001',
          max_tokens: 150,
          system: `You are answering Education Perfect quiz questions for a student.
Reply with ONLY the answer — no explanation, no preamble, no "The answer is", no punctuation unless it is part of the answer.
If it is multiple choice, state only the text of the correct option.
If it is fill-in-the-blank with multiple gaps, list the answers separated by commas in order.
If it is a vocabulary translation, give only the translated word or phrase.
Be as brief as possible. Just the answer.`,
          messages: [{ role: 'user', content: `Here is everything visible on the question screen:\n\n${context}\n\nWhat is the answer?` }],
        })
      });

      loadingToast.remove();

      if (response.status === 401) {
        CLAUDE_API_KEY = '';
        sessionStorage.removeItem('ep_claude_key');
        showToast('⚠ Invalid API key — open Claude panel', '#f78166', 3000);
        hotkeyBusy = false;
        return;
      }

      const json = await response.json();
      const answer = json.content?.[0]?.text?.trim();

      if (!answer) {
        showToast('⚠ No answer returned', '#f78166');
        hotkeyBusy = false;
        return;
      }

      try { await navigator.clipboard.writeText(answer); } catch(e) {}

      const short = answer.length > 60 ? answer.slice(0, 57) + '…' : answer;
      showToast('✓ Copied: ' + short, '#3fb950', 3500);

      const msgs = document.getElementById('ep-claude-messages');
      if (msgs && document.getElementById('ep-claude-popup')?.style.display !== 'none') {
        appendMessageGlobal('assistant', '⌨ [Hotkey] ' + answer);
      }

    } catch(e) {
      loadingToast?.remove();
      showToast('⚠ Error: ' + e.message, '#f78166', 3000);
    }

    hotkeyBusy = false;
  }

  let appendMessageGlobal = () => {};

  document.addEventListener('keydown', e => {
    if (e.shiftKey && e.altKey && e.key === 'A') {
      e.preventDefault();
      e.stopImmediatePropagation();
      hotkeyAskClaude();
    }
  }, true);

  // ── BUILD UI ──────────────────────────────────────────────────
  function buildUI() {
    document.getElementById('ep-hacks-panel')?.remove();
    document.getElementById('ep-hacks-reopen')?.remove();
    document.getElementById('ep-claude-popup')?.remove();

    const reopenBtn = document.createElement('div');
    reopenBtn.id = 'ep-hacks-reopen';
    reopenBtn.style.cssText = `
      position:fixed;top:16px;right:16px;z-index:999999;
      width:32px;height:32px;border-radius:50%;
      background:#58a6ff;color:#0f1117;
      font-size:18px;font-weight:700;
      display:none;align-items:center;justify-content:center;
      cursor:pointer;box-shadow:0 4px 12px rgba(0,0,0,0.4);
    `;
    reopenBtn.textContent = '⚡';
    document.body.appendChild(reopenBtn);

    const panel = document.createElement('div');
    panel.id = 'ep-hacks-panel';
    panel.style.cssText = `
      position:fixed;top:16px;right:16px;z-index:999999;
      background:#0f1117;color:#e2e8f0;
      border:1px solid #30363d;border-radius:12px;
      padding:16px 20px;font-family:'Fira Code',monospace;
      font-size:13px;min-width:240px;
      box-shadow:0 8px 32px rgba(0,0,0,0.6);
    `;
    panel.innerHTML = `
      <div id="ep-hacks-drag" style="display:flex;justify-content:space-between;align-items:center;margin-bottom:14px;cursor:grab;">
        <span style="font-size:14px;font-weight:700;color:#58a6ff;">⚡ EP Hacks</span>
        <button id="ep-hacks-close" style="background:none;border:none;color:#8b949e;cursor:pointer;font-size:18px;padding:0;line-height:1;">×</button>
      </div>
      <div style="margin-bottom:14px;">
        <div style="font-size:10px;color:#8b949e;text-transform:uppercase;letter-spacing:0.08em;margin-bottom:4px;">Answer</div>
        <div id="ep-hacks-prompt" style="font-size:11px;color:#484f58;margin-bottom:4px;">—</div>
        <div id="ep-hacks-answer" style="font-size:22px;font-weight:700;color:#3fb950;min-height:28px;letter-spacing:0.02em;cursor:pointer;" title="Click to copy">—</div>
        <div id="ep-hacks-type" style="font-size:10px;color:#484f58;margin-top:4px;"></div>
      </div>
      <div style="height:1px;background:#21262d;margin-bottom:14px;"></div>
      <div style="display:flex;justify-content:space-between;align-items:center;margin-bottom:10px;">
        <div>
          <div style="font-size:12px;font-weight:600;color:#e2e8f0;">Anti-Snitch</div>
          <div style="font-size:10px;color:#8b949e;">Hides tab switching</div>
        </div>
        <div id="ep-snitch-toggle" style="width:40px;height:22px;border-radius:11px;background:#238636;cursor:pointer;position:relative;transition:background 0.2s;">
          <div id="ep-snitch-knob" style="position:absolute;top:3px;left:21px;width:16px;height:16px;border-radius:50%;background:#fff;transition:left 0.2s;"></div>
        </div>
      </div>
      <div style="display:flex;justify-content:space-between;align-items:center;margin-bottom:10px;">
        <div>
          <div style="font-size:12px;font-weight:600;color:#e2e8f0;">Auto-Skip Info</div>
          <div style="font-size:10px;color:#8b949e;">Skips learning slides</div>
        </div>
        <div id="ep-skip-toggle" style="width:40px;height:22px;border-radius:11px;background:#484f58;cursor:pointer;position:relative;transition:background 0.2s;">
          <div id="ep-skip-knob" style="position:absolute;top:3px;left:3px;width:16px;height:16px;border-radius:50%;background:#fff;transition:left 0.2s;"></div>
        </div>
      </div>
      <div style="height:1px;background:#21262d;margin-bottom:10px;"></div>
      <button id="ep-claude-btn" style="
        width:100%;padding:7px;background:#21262d;color:#e2e8f0;
        border:1px solid #30363d;border-radius:6px;cursor:pointer;
        font-size:11px;font-family:'Fira Code',monospace;text-align:left;
        margin-bottom:8px;">
        🤖 Claude AI
      </button>
      <div style="
        background:#1f6feb11;border:1px solid #1f6feb33;border-radius:6px;
        padding:6px 10px;font-size:10px;color:#8b949e;
        display:flex;align-items:center;gap:6px;margin-bottom:10px;">
        <span style="color:#58a6ff;font-weight:700;">⌨</span>
        <span>Hotkey: <span style="color:#e2e8f0;font-weight:600;">Shift+Alt+A</span></span>
        <span style="margin-left:auto;color:#484f58;">asks + copies</span>
      </div>
      <div style="height:1px;background:#21262d;margin-bottom:10px;"></div>
      <button id="ep-exit-fullscreen" style="
        width:100%;padding:7px;background:#21262d;color:#8b949e;
        border:1px solid #30363d;border-radius:6px;cursor:pointer;
        font-size:11px;font-family:'Fira Code',monospace;text-align:left;">
        ⛶ Enter Fullscreen
      </button>
    `;
    document.body.appendChild(panel);

    document.getElementById('ep-hacks-close').addEventListener('click', () => {
      panel.style.display = 'none';
      reopenBtn.style.display = 'flex';
    });
    reopenBtn.addEventListener('click', () => {
      panel.style.display = '';
      reopenBtn.style.display = 'none';
    });

    const panelDrag = document.getElementById('ep-hacks-drag');
    let panelDragging = false, panelDragX = 0, panelDragY = 0;
    panelDrag.addEventListener('mousedown', e => {
      if (e.target.tagName === 'BUTTON') return;
      panelDragging = true;
      const r = panel.getBoundingClientRect();
      panelDragX = e.clientX - r.left; panelDragY = e.clientY - r.top;
      panelDrag.style.cursor = 'grabbing';
    });
    document.addEventListener('mousemove', e => {
      if (!panelDragging) return;
      panel.style.left   = Math.max(0, Math.min(e.clientX - panelDragX, window.innerWidth  - panel.offsetWidth))  + 'px';
      panel.style.top    = Math.max(0, Math.min(e.clientY - panelDragY, window.innerHeight - panel.offsetHeight)) + 'px';
      panel.style.right  = 'auto';
      panel.style.bottom = 'auto';
    });
    document.addEventListener('mouseup', () => { panelDragging = false; panelDrag.style.cursor = 'grab'; });

    document.getElementById('ep-snitch-toggle').addEventListener('click', () => {
      antiSnitchActive = !antiSnitchActive;
      document.getElementById('ep-snitch-toggle').style.background = antiSnitchActive ? '#238636' : '#484f58';
      document.getElementById('ep-snitch-knob').style.left = antiSnitchActive ? '21px' : '3px';
    });
    document.getElementById('ep-skip-toggle').addEventListener('click', () => {
      autoSkipActive = !autoSkipActive;
      document.getElementById('ep-skip-toggle').style.background = autoSkipActive ? '#238636' : '#484f58';
      document.getElementById('ep-skip-knob').style.left = autoSkipActive ? '21px' : '3px';
    });

    // ── CLAUDE POPUP ──────────────────────────────────────────────
    let chatHistory = [];
    let popupOpen = false;
    let lastAssistantText = '';

    const popup = document.createElement('div');
    popup.id = 'ep-claude-popup';
    popup.style.cssText = `
      position:fixed;bottom:80px;right:24px;z-index:999998;
      width:340px;background:#0f1117;color:#e2e8f0;
      border:1px solid #30363d;border-radius:12px;
      font-family:'Fira Code',monospace;font-size:12px;
      box-shadow:0 8px 32px rgba(0,0,0,0.7);
      display:none;flex-direction:column;overflow:hidden;
      user-select:none;
    `;
    popup.innerHTML = `
      <div id="ep-claude-drag" style="
        display:flex;justify-content:space-between;align-items:center;
        padding:12px 16px;border-bottom:1px solid #21262d;cursor:grab;flex-shrink:0;">
        <span style="font-weight:700;color:#58a6ff;">🤖 Claude AI</span>
        <div style="display:flex;gap:8px;align-items:center;">
          <button id="ep-claude-settings" style="background:none;border:none;color:#8b949e;cursor:pointer;font-size:13px;padding:0;line-height:1;transition:color 0.15s;" title="Change API key">⚙</button>
          <button id="ep-claude-close" style="background:none;border:none;color:#8b949e;cursor:pointer;font-size:18px;padding:0;line-height:1;">×</button>
        </div>
      </div>

      <!-- KEY SCREEN -->
      <div id="ep-key-screen" style="padding:20px 18px;display:flex;flex-direction:column;gap:12px;">
        <div style="display:flex;align-items:center;gap:10px;">
          <div style="width:36px;height:36px;border-radius:50%;background:#1f6feb22;display:flex;align-items:center;justify-content:center;font-size:20px;flex-shrink:0;">🔑</div>
          <div>
            <div style="font-size:13px;font-weight:700;color:#e2e8f0;">API Key Required</div>
            <div style="font-size:10px;color:#8b949e;margin-top:2px;">Enter your Anthropic key to continue</div>
          </div>
        </div>
        <input id="ep-key-input" type="password" placeholder="sk-ant-api03-..." autocomplete="off" style="
          width:100%;box-sizing:border-box;padding:9px 12px;
          background:#161b22;color:#e2e8f0;border:1px solid #30363d;border-radius:8px;
          font-size:12px;font-family:'Fira Code',monospace;outline:none;transition:border-color 0.15s;"/>
        <div style="font-size:10px;color:#484f58;line-height:1.5;">
          Stored in sessionStorage only. Sent directly to Anthropic — never anywhere else.
        </div>
        <button id="ep-key-submit" style="
          width:100%;padding:9px;background:#238636;color:#fff;
          border:none;border-radius:8px;cursor:pointer;
          font-size:12px;font-family:'Fira Code',monospace;font-weight:700;transition:background 0.15s;">
          Save &amp; Continue →
        </button>
      </div>

      <!-- CHAT SCREEN -->
      <div id="ep-chat-screen" style="display:none;flex-direction:column;">
        <div style="padding:10px 16px;border-bottom:1px solid #21262d;display:flex;gap:8px;flex-shrink:0;">
          <button id="ep-claude-screen" style="
            flex:1;padding:8px;background:#1f6feb;color:#fff;
            border:none;border-radius:6px;cursor:pointer;font-size:11px;
            font-family:'Fira Code',monospace;font-weight:600;transition:background 0.15s;">
            ✦ Answer this question
          </button>
          <button id="ep-claude-copy-last" style="
            padding:8px 12px;background:#21262d;color:#8b949e;
            border:1px solid #30363d;border-radius:6px;cursor:pointer;font-size:11px;
            font-family:'Fira Code',monospace;display:none;transition:color 0.15s,background 0.15s;">
            Copy
          </button>
        </div>
        <div id="ep-claude-messages" style="
          flex:1;max-height:240px;overflow-y:auto;padding:10px 16px;
          display:flex;flex-direction:column;gap:8px;"></div>
        <div style="padding:10px 16px;border-top:1px solid #21262d;display:flex;gap:6px;flex-shrink:0;">
          <input id="ep-claude-input" type="text" placeholder="Ask anything..." style="
            flex:1;padding:7px 10px;background:#21262d;color:#e2e8f0;
            border:1px solid #30363d;border-radius:6px;font-size:11px;
            font-family:'Fira Code',monospace;outline:none;"/>
          <button id="ep-claude-send" style="
            padding:7px 12px;background:#238636;color:#fff;
            border:none;border-radius:6px;cursor:pointer;font-size:11px;
            font-family:'Fira Code',monospace;transition:background 0.15s;">Send</button>
        </div>
        <div style="padding:4px 16px 10px;flex-shrink:0;">
          <button id="ep-claude-clear" style="background:none;border:none;color:#484f58;cursor:pointer;font-size:10px;font-family:'Fira Code',monospace;">Clear chat</button>
        </div>
      </div>
    `;
    document.body.appendChild(popup);

    function showKeyScreen() {
      document.getElementById('ep-key-screen').style.display = 'flex';
      document.getElementById('ep-key-screen').style.flexDirection = 'column';
      document.getElementById('ep-chat-screen').style.display = 'none';
      document.getElementById('ep-claude-settings').style.color = '#f78166';
      setTimeout(() => document.getElementById('ep-key-input')?.focus(), 50);
    }

    function showChatScreen() {
      document.getElementById('ep-key-screen').style.display = 'none';
      document.getElementById('ep-chat-screen').style.display = 'flex';
      document.getElementById('ep-chat-screen').style.flexDirection = 'column';
      document.getElementById('ep-claude-settings').style.color = '#8b949e';
    }

    function handleKeySave() {
      const val = document.getElementById('ep-key-input').value.trim();
      if (!val) {
        const inp = document.getElementById('ep-key-input');
        inp.style.borderColor = '#f78166';
        setTimeout(() => inp.style.borderColor = '#30363d', 1200);
        return;
      }
      CLAUDE_API_KEY = val;
      sessionStorage.setItem('ep_claude_key', val);
      document.getElementById('ep-key-input').value = '';
      showChatScreen();
    }

    document.getElementById('ep-key-submit').addEventListener('click', handleKeySave);
    document.getElementById('ep-key-input').addEventListener('keydown', e => { if (e.key === 'Enter') handleKeySave(); });

    const ki = document.getElementById('ep-key-input');
    ki.addEventListener('focus', () => ki.style.borderColor = '#58a6ff');
    ki.addEventListener('blur',  () => ki.style.borderColor = '#30363d');

    document.getElementById('ep-claude-settings').addEventListener('click', showKeyScreen);

    document.getElementById('ep-claude-btn').addEventListener('click', () => {
      popupOpen = !popupOpen;
      popup.style.display = popupOpen ? 'flex' : 'none';
      if (popupOpen) { CLAUDE_API_KEY ? showChatScreen() : showKeyScreen(); }
    });
    document.getElementById('ep-claude-close').addEventListener('click', () => {
      popupOpen = false; popup.style.display = 'none';
    });

    const dragHandle = document.getElementById('ep-claude-drag');
    let dragging = false, dragX = 0, dragY = 0;
    dragHandle.addEventListener('mousedown', e => {
      if (e.target.tagName === 'BUTTON') return;
      dragging = true;
      const r = popup.getBoundingClientRect();
      dragX = e.clientX - r.left; dragY = e.clientY - r.top;
      dragHandle.style.cursor = 'grabbing';
    });
    document.addEventListener('mousemove', e => {
      if (!dragging) return;
      popup.style.left   = Math.max(0, Math.min(e.clientX - dragX, window.innerWidth  - popup.offsetWidth))  + 'px';
      popup.style.top    = Math.max(0, Math.min(e.clientY - dragY, window.innerHeight - popup.offsetHeight)) + 'px';
      popup.style.right  = 'auto';
      popup.style.bottom = 'auto';
    });
    document.addEventListener('mouseup', () => { dragging = false; dragHandle.style.cursor = 'grab'; });

    function appendMessage(role, text) {
      const msgs = document.getElementById('ep-claude-messages');
      if (!msgs) return;
      const div = document.createElement('div');
      div.style.cssText = 'padding:8px 10px;border-radius:6px;word-break:break-word;line-height:1.5;';
      if (role === 'user') {
        div.style.background = '#1f6feb22'; div.style.color = '#58a6ff';
        div.textContent = 'You: ' + text;
      } else if (role === 'assistant') {
        lastAssistantText = text;
        div.style.background = '#23863622'; div.style.color = '#3fb950';
        div.innerHTML = text.split('\n').join('<br>');
        document.getElementById('ep-claude-copy-last').style.display = 'block';
      } else {
        div.style.color = '#484f58'; div.style.fontStyle = 'italic';
        div.textContent = text;
      }
      msgs.appendChild(div);
      msgs.scrollTop = msgs.scrollHeight;
    }

    appendMessageGlobal = appendMessage;

    document.getElementById('ep-claude-copy-last').addEventListener('click', () => {
      if (!lastAssistantText) return;
      const btn = document.getElementById('ep-claude-copy-last');
      navigator.clipboard.writeText(lastAssistantText).then(() => {
        btn.textContent = '✓ Copied'; btn.style.color = '#3fb950';
        setTimeout(() => { btn.textContent = 'Copy'; btn.style.color = '#8b949e'; }, 1200);
      }).catch(() => {});
    });

    async function sendMessage(userText, systemOverride) {
      if (!userText.trim()) return;
      if (!CLAUDE_API_KEY) { showKeyScreen(); return; }

      const context = scrapeFullContext();
      const systemPrompt = systemOverride || (context
        ? `You are helping a student with an Education Perfect question. Here is everything visible on screen:\n\n${context}\n\nGive ONLY the answer — no explanation, no preamble, no "The answer is". Be concise.`
        : 'You are helping a student. Give ONLY the answer, no explanation, no preamble. Be concise.');

      if (!systemOverride) {
        chatHistory.push({ role: 'user', content: userText });
        appendMessage('user', userText);
      }

      const sendBtn = document.getElementById('ep-claude-send');
      const chatInput = document.getElementById('ep-claude-input');
      const screenBtn = document.getElementById('ep-claude-screen');
      sendBtn.textContent = '...'; sendBtn.disabled = true; chatInput.disabled = true;

      const messages = systemOverride
        ? [{ role: 'user', content: userText }]
        : chatHistory;

      try {
        const response = await fetch('https://api.anthropic.com/v1/messages', {
          method: 'POST',
          headers: {
            'Content-Type': 'application/json',
            'x-api-key': CLAUDE_API_KEY,
            'anthropic-version': '2023-06-01',
            'anthropic-dangerous-direct-browser-access': 'true',
          },
          body: JSON.stringify({
            model: 'claude-haiku-4-5-20251001',
            max_tokens: 300,
            system: `You are answering Education Perfect quiz questions for a student.
Reply with ONLY the answer — no explanation, no preamble, no "The answer is", no punctuation unless it is part of the answer.
If multiple choice, state only the correct option text.
If fill-in-the-blank with multiple gaps, list answers comma-separated in order.
Be as brief as possible.`,
            messages,
          })
        });

        if (response.status === 401) {
          appendMessage('system', '⚠ Invalid API key — click ⚙ to update');
          CLAUDE_API_KEY = ''; sessionStorage.removeItem('ep_claude_key');
          sendBtn.textContent = 'Send'; sendBtn.disabled = false; chatInput.disabled = false;
          screenBtn.textContent = '✦ Answer this question'; screenBtn.disabled = false;
          return;
        }

        const json = await response.json();
        const reply = json.content?.[0]?.text?.trim();
        if (reply) {
          if (!systemOverride) chatHistory.push({ role: 'assistant', content: reply });
          appendMessage('assistant', reply);
          if (systemOverride) {
            try { await navigator.clipboard.writeText(reply); } catch(e) {}
          }
        } else {
          appendMessage('system', 'No response — check your API key');
        }
      } catch(e) {
        appendMessage('system', 'Error: ' + e.message);
      }

      sendBtn.textContent = 'Send'; sendBtn.disabled = false; chatInput.disabled = false;
      screenBtn.textContent = '✦ Answer this question'; screenBtn.disabled = false;
      if (!systemOverride) chatInput.focus();
    }

    document.getElementById('ep-claude-screen').addEventListener('click', async () => {
      const context = scrapeFullContext();
      if (!context || context.length < 5) { appendMessage('system', 'No question detected on screen'); return; }
      const btn = document.getElementById('ep-claude-screen');
      btn.textContent = '⏳ Thinking...'; btn.disabled = true;
      await sendMessage(
        `Here is everything on screen for this question:\n\n${context}\n\nWhat is the answer?`,
        `You are answering Education Perfect quiz questions for a student.
Reply with ONLY the answer — no explanation, no preamble, no "The answer is".
If multiple choice, state only the correct option text.
If fill-in-the-blank with multiple gaps, list answers comma-separated in order.
Be as brief as possible.`
      );
    });

    document.getElementById('ep-claude-send').addEventListener('click', () => {
      const ci = document.getElementById('ep-claude-input');
      const text = ci.value.trim(); ci.value = '';
      sendMessage(text);
    });
    document.getElementById('ep-claude-input').addEventListener('keydown', e => {
      if (e.key === 'Enter') { const text = e.target.value.trim(); e.target.value = ''; sendMessage(text); }
    });
    document.getElementById('ep-claude-clear').addEventListener('click', () => {
      chatHistory = []; lastAssistantText = '';
      document.getElementById('ep-claude-messages').innerHTML = '';
      document.getElementById('ep-claude-copy-last').style.display = 'none';
    });

    const fsBtn = document.getElementById('ep-exit-fullscreen');
    let reallyFullscreen = false;
    fsBtn.addEventListener('click', () => {
      if (reallyFullscreen) { document.exitFullscreen().catch(()=>{}); reallyFullscreen=false; fsBtn.textContent='⛶ Enter Fullscreen'; }
      else { document.documentElement.requestFullscreen().catch(()=>{}); reallyFullscreen=true; fsBtn.textContent='⛶ Exit Fullscreen'; }
    });
  }

  // ── ANSWER LOOP ───────────────────────────────────────────────
  function startAnswerLoop() {
    let lastAnswer = null;
    let lastQuestionId = null;

    setInterval(() => {
      // Detect question change and clean up dropdown marks
      try {
        const q = getQuestion();
        const qId = q?.id || q?.questionId || null;
        if (qId && qId !== lastQuestionId) {
          cleanDropdownMarks();
          lastQuestionId = qId;
        }
      } catch(e) {}

      const data = getAnswer();
      if (!data?.answer || data.answer === lastAnswer) return;
      lastAnswer = data.answer;
      const promptEl = document.getElementById('ep-hacks-prompt');
      const answerEl = document.getElementById('ep-hacks-answer');
      const typeEl   = document.getElementById('ep-hacks-type');
      if (promptEl) promptEl.textContent = data.prompt || '—';
      if (answerEl) {
        if (data.type === 'gaps' || data.type === 'mcq' || data.type === 'dropdown') {
          const parts = data.answer.split('  |  ');
          const size = parts.length > 1 ? '14px' : '20px';
          answerEl.innerHTML = parts.map(a => `<div style="font-size:${size};margin-bottom:3px;">${a}</div>`).join('');
        } else {
          answerEl.textContent = data.answer;
        }
        if (data.type !== 'mcq' && data.type !== 'gaps' && data.type !== 'dropdown') {
          navigator.clipboard.writeText(data.answer).catch(()=>{});
        }
        answerEl.onclick = () => {
          const text = (data.type === 'gaps' || data.type === 'dropdown')
            ? data.answer.replace(/  \|  /g,', ')
            : data.answer;
          navigator.clipboard.writeText(text).then(() => {
            const orig = answerEl.style.color;
            answerEl.style.color = '#58a6ff';
            setTimeout(() => answerEl.style.color = orig, 500);
          }).catch(()=>{});
        };
      }
      if (typeEl) typeEl.textContent =
        data.type==='maths'    ? '🧮 Maths'           :
        data.type==='mcq'      ? '🔵 Multiple Choice'  :
        data.type==='gaps'     ? '✏️ Fill in Gaps'     :
        data.type==='dropdown' ? '🔽 Dropdown'         : '📝 Language';
    }, 500);
  }

  // ── INIT ──────────────────────────────────────────────────────
  let uiBuilt = false;

  function tryInit() {
    if (uiBuilt) return;
    if (!window.angular) return;
    const lpEl  = document.querySelector('.lp-answer-input, [class*="lp-answer"]');
    const input = [...document.querySelectorAll('#answer-text, [id*="answer-text"]')].find(el => el.tagName === 'INPUT');
    if (!lpEl && !input) return;
    uiBuilt = true;
    buildUI();
    startAnswerLoop();
  }

  const observer = new MutationObserver(() => {
    tryInit();
    if (uiBuilt && !document.getElementById('ep-hacks-panel') && !document.getElementById('ep-hacks-reopen')) {
      uiBuilt = false; tryInit();
    }
  });
  observer.observe(document.documentElement, { childList: true, subtree: true });

  const initInterval = setInterval(() => { tryInit(); if (uiBuilt) clearInterval(initInterval); }, 300);

})();