// ==UserScript==
// @name         Duolingo SM
// @version      2.6.0
// @author       MeowWoof
// @namespace    http://tampermonkey.net/
// @description  DuolingoSM helps you enhance your Duolingo experience with advanced features
// @match        https://*.duolingo.com/*
// @grant        none
// @license      MIT
// @icon         https://d35aaqx5ub95lt.cloudfront.net/vendor/a0ee30fa22ca3d00e9e5db913b1965b5.svg
// @downloadURL none
// ==/UserScript==

(function() {
    'use strict';

    // Đừng đọc code bạn ơi DITME =(((

    const sessionUrl = "https://www.duolingo.com/2017-06-30/sessions";
    let isFarming = false, isVisible = true;
    let currentLanguage = "en";

    const getJwtToken = () => document.cookie.split(';').find(c => c.trim().startsWith('jwt_token='))?.split('=')[1] || null;
    const decodeJwtToken = token => JSON.parse(atob(token.split('.')[1].replace(/-/g, '+').replace(/_/g, '/')));
    const formatHeaders = jwtToken => ({ "Content-Type": "application/json", "Authorization": `Bearer ${jwtToken}`, "User-Agent": navigator.userAgent });
    const getUserInfo = async (sub, headers) => (await fetch(`https://www.duolingo.com/2017-06-30/users/${sub}?fields=username,fromLanguage,learningLanguage`, { headers })).json();

    const farmXp = async (headers, sessionPayload, updateSessionPayload) => {
      while (isFarming) {
        try {
          const session = await (await fetch(sessionUrl, { method: 'POST', headers, body: JSON.stringify(sessionPayload) })).json();
          const updatedSession = await (await fetch(`${sessionUrl}/${session.id}`, { method: 'PUT', headers, body: JSON.stringify({ ...session, ...updateSessionPayload }) })).json();
          document.getElementById("_xpAmount").innerText = parseInt(document.getElementById("_xpAmount").innerText) + updatedSession.xpGain;
        } catch (error) {
          alert(currentLanguage === "en" ? "An error occurred while farming XP. Please try again!" : "Đã xảy ra lỗi khi farm XP. Vui lòng thử lại!");
          await new Promise(resolve => setTimeout(resolve, 5000));
        }
      }
    };

    const translations = {
        en: {
            title: "DuolingoSM",
            welcome: "Welcome to SuperDuolingo!",
            notLoggedIn: "You are not logged in! (if you are logged in, please refresh the page)",
            hello: "Hello",
            farmXp: "FARM XP",
            farmGems: "FARM GEMS",
            upgrade: "UPGRADE TO PRO",
            start: "Start",
            stop: "Stop",
            xpGained: "XP Gained",
            warning: "Please use this tool responsibly.",
            loading: "Processing...",
            switchLang: "Tiếng Việt"
        },
        vi: {
            title: "Super-Duo",
            welcome: "Chào mừng đến với SuperDuolingo!",
            notLoggedIn: "Bạn chưa đăng nhập! (nếu bạn đã đăng nhập, vui lòng tải lại trang)",
            hello: "Xin chào",
            farmXp: "FARM XP",
            farmGems: "FARM GEMS",
            upgrade: "NÂNG CẤP PRO",
            start: "Bắt đầu",
            stop: "Dừng lại",
            xpGained: "XP Đã Nhận",
            warning: "Vui lòng sử dụng công cụ này một cách có trách nhiệm.",
            loading: "Đang xử lý...",
            switchLang: "English"
        }
    };

    const initSuperDuolingo = async () => {
        const style = document.createElement('style');
        style.innerHTML = `
:root {
  --primary: #141436;
  --secondary: #00e2c3;
  --accent: #ff7e47;
  --light: #ffffff;
  --dark: #0f0f28;
  --darker: #070718;

  --gradient-primary: linear-gradient(135deg, #00e2c3 0%, #00b8d4 50%, #0091ea 100%);
  --gradient-accent: linear-gradient(135deg, #ff7e47 0%, #ff5252 100%);
  --gradient-dark: linear-gradient(135deg, #141436 0%, #0f0f28 100%);

  --glass: rgba(255, 255, 255, 0.08);
  --glass-dark: rgba(15, 15, 40, 0.65);
  --border: rgba(255, 255, 255, 0.18);
  --border-glow: rgba(0, 226, 195, 0.3);

  --shadow-sm: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 10px 20px rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 15px 30px rgba(0, 0, 0, 0.25);
  --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.3);
  --shadow-inner: inset 0 2px 6px rgba(0, 0, 0, 0.15);
  --shadow-glow: 0 0 20px rgba(0, 226, 195, 0.25);

  --text-shadow: 0 2px 4px rgba(0, 0, 0, 0.25);
  --text-glow: 0 0 10px rgba(0, 226, 195, 0.5);

  --transition-fast: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: all 0.5s cubic-bezier(0.17, 0.89, 0.32, 1.49);
}

._sd_container {
  position: fixed;
  right: 24px;
  top: 240px;
  width: 320px;
  background: var(--dark);
  background-image:
    radial-gradient(circle at top right, rgba(0, 226, 195, 0.1), transparent 80%),
    radial-gradient(circle at bottom left, rgba(255, 126, 71, 0.05), transparent 70%);
  border-radius: 16px;
  box-shadow:
    var(--shadow-xl),
    0 0 0 1px var(--border),
    0 0 40px rgba(0, 226, 195, 0.15);
  z-index: 9999;
  overflow: hidden;
  transition: transform 0.6s cubic-bezier(0.34, 1.56, 0.64, 1), opacity 0.4s;
  backdrop-filter: blur(10px);
  transform-origin: top left;
}

._sd_container::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background:
    linear-gradient(
      to right,
      transparent,
      rgba(255, 255, 255, 0.03),
      transparent
    );
  transform: rotate(45deg);
  animation: _sd_light_sweep 8s infinite linear;
  pointer-events: none;
}

._sd_container::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 16px;
  padding: 1px;
  background: linear-gradient(135deg, var(--secondary), transparent 50%, var(--accent));
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask-composite: exclude;
  pointer-events: none;
}

._sd_container.hidden {
  transform: translateY(-120%) scale(0.95);
  opacity: 0;
}

._sd_header {
  background: var(--gradient-dark);
  padding: 20px;
  position: relative;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-inner);
  overflow: hidden;
}

._sd_header::before {
  content: '';
  position: absolute;
  right: -20px;
  top: -20px;
  width: 100px;
  height: 100px;
  background: radial-gradient(circle, rgba(0, 226, 195, 0.15), transparent 70%);
  border-radius: 50%;
  filter: blur(8px);
  pointer-events: none;
}

._sd_title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--secondary);
  margin: 0;
  letter-spacing: 1.5px;
  text-shadow: var(--text-shadow);
  position: relative;
  display: inline-block;
  background: linear-gradient(to right, var(--secondary), #64ffda);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 2px 2px rgba(0, 0, 0, 0.3));
}

._sd_title::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 50%;
  height: 2px;
  background: var(--gradient-primary);
  border-radius: 2px;
  transition: var(--transition);
}

._sd_body {
  padding: 24px;
  background: var(--dark);
  position: relative;
  z-index: 1;
}

._sd_welcome {
  font-size: 0.95rem;
  color: var(--light);
  margin-bottom: 20px;
  opacity: 0.95;
  line-height: 1.6;
  border-left: 3px solid var(--secondary);
  padding: 14px 16px;
  background: var(--glass);
  border-radius: 0 12px 12px 0;
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
}

._sd_welcome::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  width: 3px;
  height: 100%;
  background: var(--gradient-primary);
  opacity: 0.8;
  animation: _sd_pulse 2s infinite;
}

._sd_tabs {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 28px;
  position: relative;
}

._sd_tabs::after {
  content: '';
  position: absolute;
  bottom: -14px;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--border), transparent);
}

._sd_tab {
  padding: 14px 18px;
  border-radius: 12px;
  background: rgba(20, 20, 54, 0.6);
  color: var(--light);
  cursor: pointer;
  transition: var(--transition-bounce);
  font-weight: 600;
  font-size: 0.95rem;
  border-left: 3px solid transparent;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(4px);
  position: relative;
  overflow: hidden;
}

._sd_tab::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to right, transparent, rgba(255, 255, 255, 0.03));
  opacity: 0;
  transition: var(--transition);
}

._sd_tab:hover::before {
  opacity: 1;
}

._sd_tab.active {
  color: var(--accent);
  border-left: 3px solid var(--accent);
  background: rgba(42, 42, 96, 0.8);
  box-shadow:
    var(--shadow-md),
    0 0 0 1px rgba(255, 126, 71, 0.2),
    0 0 15px rgba(255, 126, 71, 0.1);
  transform: translateX(5px);
}

._sd_tab:hover:not(.active) {
  background: rgba(42, 42, 96, 0.5);
  transform: translateX(5px);
  box-shadow:
    var(--shadow-md),
    0 0 0 1px rgba(255, 255, 255, 0.1);
}

._sd_tab::after {
  content: "›";
  opacity: 0;
  transform: translateX(-10px);
  transition: var(--transition);
  font-size: 1.4rem;
  text-shadow: var(--text-shadow);
}

._sd_tab:hover::after {
  opacity: 0.7;
  transform: translateX(0);
}

._sd_tab.active::after {
  content: "›";
  opacity: 1;
  transform: translateX(0);
  color: var(--accent);
}

._sd_farm_controls {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  position: relative;
}

._sd_start_btn {
  padding: 16px;
  background: var(--gradient-primary);
  border: none;
  border-radius: 12px;
  color: var(--light);
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition-bounce);
  width: 100%;
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  box-shadow:
    var(--shadow-lg),
    0 0 20px rgba(0, 226, 195, 0.2);
  position: relative;
  overflow: hidden;
  text-shadow: var(--text-shadow);
}

._sd_start_btn::before {
  content: "";
  position: absolute;
  top: -10px;
  left: -100%;
  width: 100%;
  height: 200%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.3),
    transparent
  );
  transform: rotate(25deg);
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

._sd_start_btn:hover::before {
  left: 200%;
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

._sd_start_btn:hover {
  transform: translateY(-3px);
  box-shadow:
    var(--shadow-xl),
    0 0 30px rgba(0, 226, 195, 0.4);
  background-image: linear-gradient(135deg, #00e2c3 0%, #00cbde 50%, #00a6ea 100%);
  letter-spacing: 2.5px;
}

._sd_start_btn:active {
  transform: translateY(1px);
  box-shadow:
    var(--shadow-sm),
    0 0 10px rgba(0, 226, 195, 0.4);
  background-image: linear-gradient(135deg, #00cbb0 0%, #00b8c9 50%, #0091d1 100%);
}

._sd_start_btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
  filter: grayscale(0.8);
}

._sd_toggle_btn {
  position: fixed;
  left: 24px;
  bottom: 24px;
  width: 54px;
  height: 54px;
  border-radius: 14px;
  background: var(--gradient-primary);
  border: none;
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  z-index: 10000;
  transition: var(--transition-bounce);
  color: var(--light);
  font-weight: bold;
  font-size: 1.5rem;
  box-shadow:
    var(--shadow-lg),
    0 0 20px rgba(0, 226, 195, 0.3);
  text-shadow: var(--text-shadow);
  overflow: hidden;
}

._sd_toggle_btn::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.2), transparent 70%);
  opacity: 0;
  transition: var(--transition);
  pointer-events: none;
}

._sd_toggle_btn:hover::before {
  opacity: 1;
  transform: scale(0.5);
}

._sd_toggle_btn:hover {
  transform: scale(1.15) rotate(5deg);
  box-shadow:
    var(--shadow-xl),
    0 0 30px rgba(0, 226, 195, 0.5);
}

._sd_toggle_btn:active {
  transform: scale(0.95);
}

._sd_overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(7, 7, 24, 0.85);
  backdrop-filter: blur(10px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  animation: _sd_fadeIn 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

._sd_modal {
  background: var(--primary);
  border-left: 5px solid var(--secondary);
  border-radius: 14px;
  padding: 35px;
  width: 90%;
  max-width: 450px;
  animation: _sd_slideIn 0.6s cubic-bezier(0.17, 0.89, 0.32, 1.49);
  box-shadow:
    var(--shadow-xl),
    0 0 0 1px var(--border),
    0 0 40px rgba(0, 226, 195, 0.15);
  position: relative;
  overflow: hidden;
}

._sd_modal::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 14px;
  padding: 1px;
  background: linear-gradient(135deg, var(--secondary), transparent 50%, var(--accent));
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask-composite: exclude;
  pointer-events: none;
}

._sd_modal::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image:
    radial-gradient(circle at top right, rgba(0, 226, 195, 0.1), transparent 70%),
    radial-gradient(circle at bottom left, rgba(255, 126, 71, 0.05), transparent 70%);
  pointer-events: none;
}

._sd_modal_title {
  font-size: 1.8rem;
  font-weight: 800;
  margin-bottom: 28px;
  background: linear-gradient(to right, var(--secondary), #64ffda);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-transform: uppercase;
  letter-spacing: 2px;
  filter: drop-shadow(0 2px 2px rgba(0, 0, 0, 0.3));
  position: relative;
  display: inline-block;
}

._sd_modal_title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -8px;
  width: 60px;
  height: 3px;
  background: var(--gradient-primary);
  border-radius: 3px;
}

._sd_spinner {
  display: inline-block;
  width: 80px;
  height: 80px;
  margin: 30px auto;
  position: relative;
}

._sd_spinner::before {
  content: '';
  position: absolute;
  inset: -5px;
  border-radius: 50%;
  background: rgba(0, 226, 195, 0.05);
  box-shadow: 0 0 30px rgba(0, 226, 195, 0.3);
  animation: _sd_pulse 2s infinite;
}

._sd_spinner:after {
  content: " ";
  display: block;
  width: 64px;
  height: 64px;
  margin: 8px;
  border-radius: 50%;
  border: 4px solid transparent;
  border-top: 4px solid var(--secondary);
  border-right: 4px solid var(--accent);
  border-bottom: 4px solid var(--secondary);
  border-left: 4px solid var(--accent);
  animation: _sd_spin 1.2s cubic-bezier(0.5, 0, 0.5, 1) infinite;
  box-shadow: 0 0 10px rgba(0, 226, 195, 0.2);
}

._sd_xp_info {
  font-size: 1rem;
  background: linear-gradient(to right, var(--accent), #ffae70);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin: 30px 0;
  font-weight: 800;
  letter-spacing: 1.5px;
  filter: drop-shadow(0 2px 2px rgba(0, 0, 0, 0.3));
  text-align: center;
  position: relative;
}

._sd_xp_info::before {
  content: '';
  position: absolute;
  top: -15px;
  left: 50%;
  transform: translateX(-50%);
  width: 100px;
  height: 2px;
  background: linear-gradient(to right, transparent, var(--accent), transparent);
}

._sd_xp_info::after {
  content: '';
  position: absolute;
  bottom: -15px;
  left: 50%;
  transform: translateX(-50%);
  width: 100px;
  height: 2px;
  background: linear-gradient(to right, transparent, var(--accent), transparent);
}

._sd_warning {
  font-size: 0.95rem;
  color: var(--light);
  opacity: 0.85;
  margin-bottom: 28px;
  line-height: 1.7;
  border-left: 3px solid var(--accent);
  padding: 14px 16px;
  background: rgba(255, 126, 71, 0.08);
  border-radius: 0 12px 12px 0;
  box-shadow: var(--shadow-sm);
  position: relative;
}

._sd_warning::before {
  content: '!';
  position: absolute;
  left: -15px;
  top: 50%;
  transform: translateY(-50%);
  width: 26px;
  height: 26px;
  background: var(--accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: 16px;
  color: var(--primary);
  box-shadow: var(--shadow-sm);
}

._sd_stop_btn {
  padding: 14px 30px;
  background: var(--gradient-accent);
  border: none;
  border-radius: 12px;
  color: var(--light);
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition-bounce);
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  box-shadow:
    var(--shadow-lg),
    0 0 20px rgba(255, 126, 71, 0.3);
  position: relative;
  overflow: hidden;
  text-shadow: var(--text-shadow);
}

._sd_stop_btn::before {
  content: "";
  position: absolute;
  top: -10px;
  left: -100%;
  width: 100%;
  height: 200%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.3),
    transparent
  );
  transform: rotate(25deg);
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

._sd_stop_btn:hover::before {
  left: 200%;
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

._sd_stop_btn:hover {
  background: linear-gradient(135deg, #ff8e5e 0%, #ff5252 100%);
  transform: translateY(-3px);
  box-shadow:
    var(--shadow-xl),
    0 0 30px rgba(255, 126, 71, 0.4);
  letter-spacing: 2.5px;
}

._sd_stop_btn:active {
  transform: translateY(1px);
  box-shadow:
    var(--shadow-sm),
    0 0 10px rgba(255, 126, 71, 0.4);
}

._sd_language_switcher {
  position: relative;
  background: transparent;
  border: 1px solid var(--secondary);
  border-radius: 10px;
  padding: 6px 14px;
  font-size: 0.8rem;
  background: linear-gradient(to right, var(--secondary), #64ffda);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  cursor: pointer;
  transition: var(--transition-bounce);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  font-weight: 600;
}

._sd_language_switcher:hover {
  border-color: var(--accent);
  background: linear-gradient(to right, var(--accent), #ffae70);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  box-shadow: 0 0 15px rgba(0, 226, 195, 0.2);
  transform: translateY(-2px);
}

._sd_language_switcher:active {
  transform: translateY(1px);
}

@keyframes _sd_spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

@keyframes _sd_fadeIn {
  0% {
    opacity: 0;
  }
  100% {
    opacity: 1;
  }
}

@keyframes _sd_slideIn {
  0% {
    opacity: 0;
    transform: translateY(-30px) scale(0.95);
  }
  100% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes _sd_pulse {
  0% {
    opacity: 0.7;
  }
  50% {
    opacity: 1;
  }
  100% {
    opacity: 0.7;
  }
}

@keyframes _sd_light_sweep {
  0% {
    transform: rotate(45deg) translateY(0%);
  }
  100% {
    transform: rotate(45deg) translateY(100%);
  }
}

._sd_container::before, ._sd_modal::before {
  animation: _sd_float 8s ease-in-out infinite alternate;
}

@keyframes _sd_float {
  0% {
    background-position: 0% 0%;
  }
  100% {
    background-position: 100% 100%;
  }
}

._sd_container, ._sd_modal, ._sd_tab, ._sd_welcome, ._sd_warning {
  backdrop-filter: blur(10px);
}

._sd_body::-webkit-scrollbar {
  width: 5px;
}

._sd_body::-webkit-scrollbar-track {
  background: rgba(15, 15, 40, 0.5);
  border-radius: 10px;
}

._sd_body::-webkit-scrollbar-thumb {
  background: var(--secondary);
  border-radius: 10px;
}

._sd_container:hover {
  box-shadow:
    var(--shadow-xl),
    0 0 0 1px var(--border-glow),
    0 0 50px rgba(0, 226, 195, 0.2);
}
        `;
        document.head.appendChild(style);

        const containerHTML = `
            <div class="_sd_container" id="_sd_container">
                <div class="_sd_header">
                    <h2 class="_sd_title" id="_sd_title">${translations[currentLanguage].title}</h2>
                    <button class="_sd_language_switcher" id="_sd_language_switcher">${translations[currentLanguage].switchLang}</button>
                </div>
                <div class="_sd_body">
                    <div class="_sd_welcome" id="_sd_welcome">${translations[currentLanguage].welcome}</div>
                    <div class="_sd_tabs">
                        <div class="_sd_tab active" id="_sd_tab_farm_xp">${translations[currentLanguage].farmXp}</div>
                        <div class="_sd_tab" id="_sd_tab_farm_gems">${translations[currentLanguage].farmGems}</div>
                        <div class="_sd_tab" id="_sd_tab_upgrade">${translations[currentLanguage].upgrade}</div>
                    </div>
                    <div class="_sd_farm_controls">
                        <button class="_sd_start_btn" id="_sd_start_btn">${translations[currentLanguage].start}</button>
                    </div>
                </div>
            </div>
            <button class="_sd_toggle_btn" id="_sd_toggle_btn">→</button>
            <div class="_sd_overlay" id="_sd_overlay">
                <div class="_sd_modal">
                    <h2 class="_sd_modal_title" id="_sd_modal_title">${translations[currentLanguage].title}</h2>
                    <p id="_sd_loading_message">${translations[currentLanguage].loading}</p>
                    <div class="_sd_spinner" id="_sd_spinner"></div>
                    <div class="_sd_warning" id="_sd_warning">${translations[currentLanguage].warning}</div>
                    <div class="_sd_xp_info"><span id="_sd_xp_label">${translations[currentLanguage].xpGained}:</span> <span id="_xpAmount">0</span> XP</div>
                    <button id="_sd_stop_btn" class="_sd_stop_btn">${translations[currentLanguage].stop}</button>
                </div>
            </div>
        `;
        document.body.insertAdjacentHTML('beforeend', containerHTML);

        const JWT = getJwtToken();
        if (!JWT) {
            document.getElementById("_sd_start_btn").disabled = true;
            document.getElementById("_sd_welcome").innerText = translations[currentLanguage].notLoggedIn;
            return;
        }

        const HEADERS = formatHeaders(JWT);
        try {
            const { username, fromLanguage, learningLanguage } = await getUserInfo(decodeJwtToken(JWT).sub, HEADERS);
            document.getElementById("_sd_welcome").innerHTML = `${translations[currentLanguage].hello} <strong>${username}</strong>!`;

            const sessionPayload = {
                challengeTypes: ["assist", "characterIntro", "characterMatch", "characterPuzzle", "characterSelect", "characterTrace", "characterWrite", "completeReverseTranslation", "definition", "dialogue", "extendedMatch", "extendedListenMatch", "form", "freeResponse", "gapFill", "judge", "listen", "listenComplete", "listenMatch", "match", "name", "listenComprehension", "listenIsolation", "listenSpeak", "listenTap", "orderTapComplete", "partialListen", "partialReverseTranslate", "patternTapComplete", "radioBinary", "radioImageSelect", "radioListenMatch", "radioListenRecognize", "radioSelect", "readComprehension", "reverseAssist", "sameDifferent", "select", "selectPronunciation", "selectTranscription", "svgPuzzle", "syllableTap", "syllableListenTap", "speak", "tapCloze", "tapClozeTable", "tapComplete", "tapCompleteTable", "tapDescribe", "translate", "transliterate", "transliterationAssist", "typeCloze", "typeClozeTable", "typeComplete", "typeCompleteTable", "writeComprehension"],
                fromLanguage,
                learningLanguage,
                type: "GLOBAL_PRACTICE"
            };

            const updateSessionPayload = {
                heartsLeft: 0,
                startTime: Math.floor(Date.now() / 1000),
                enableBonusPoints: false,
                endTime: Math.floor(Date.now() / 1000) + 112,
                failed: false,
                maxInLessonStreak: 9,
                shouldLearnThings: true
            };

            document.getElementById("_sd_toggle_btn").addEventListener("click", () => {
                isVisible = !isVisible;
                document.getElementById("_sd_container").classList.toggle("hidden", !isVisible);
                document.getElementById("_sd_toggle_btn").innerHTML = isVisible ? "→" : "←";
            });

            document.getElementById("_sd_start_btn").addEventListener("click", () => {
                document.getElementById("_sd_overlay").style.display = "flex";
                isFarming = true;
                farmXp(HEADERS, sessionPayload, updateSessionPayload);
            });

            document.getElementById("_sd_stop_btn").addEventListener("click", () => {
                document.getElementById("_sd_overlay").style.display = "none";
                isFarming = false;
                const startBtn = document.getElementById("_sd_start_btn");
                startBtn.disabled = true;
                startBtn.innerText = "...";
                setTimeout(() => {
                    startBtn.disabled = false;
                    startBtn.innerText = translations[currentLanguage].start;
                }, 2000);
            });

            document.getElementById("_sd_language_switcher").addEventListener("click", () => {
                currentLanguage = currentLanguage === "en" ? "vi" : "en";
                updateLanguage();
            });

            document.getElementById("_sd_tab_farm_gems").addEventListener("click", () => {
                window.open("https://discord.gg/ufBrcGemBH", "_blank");
            });

            document.getElementById("_sd_tab_upgrade").addEventListener("click", () => {
                window.open("https://superduolingo.click", "_blank");
            });

        } catch (error) {
            console.error("Error initializing SuperDuolingo:", error);
            document.getElementById("_sd_welcome").innerText = "Error initializing SuperDuolingo. Please refresh the page.";
        }
    };

    function updateLanguage() {
        document.getElementById("_sd_title").innerText = translations[currentLanguage].title;
        document.getElementById("_sd_language_switcher").innerText = translations[currentLanguage].switchLang;

        const welcomeEl = document.getElementById("_sd_welcome");
        if (!welcomeEl.innerHTML.includes("<strong>")) {
            welcomeEl.innerText = translations[currentLanguage].welcome;
        } else {
            const username = welcomeEl.querySelector("strong").innerText;
            welcomeEl.innerHTML = `${translations[currentLanguage].hello} <strong>${username}</strong>!`;
        }

        document.getElementById("_sd_tab_farm_xp").innerText = translations[currentLanguage].farmXp;
        document.getElementById("_sd_tab_farm_gems").innerText = translations[currentLanguage].farmGems;
        document.getElementById("_sd_tab_upgrade").innerText = translations[currentLanguage].upgrade;
        document.getElementById("_sd_start_btn").innerText = translations[currentLanguage].start;
        document.getElementById("_sd_modal_title").innerText = translations[currentLanguage].title;
        document.getElementById("_sd_loading_message").innerText = translations[currentLanguage].loading;
        document.getElementById("_sd_warning").innerText = translations[currentLanguage].warning;
        document.getElementById("_sd_xp_label").innerText = `${translations[currentLanguage].xpGained}:`;
        document.getElementById("_sd_stop_btn").innerText = translations[currentLanguage].stop;
    }

    initSuperDuolingo();
})();