Learn Spanish: Work and Related Themes<\/title>\n <style>\n * { box-sizing: border-box; }\n\n body {\n font-family: Arial, sans-serif;\n background-color: #f4f6f8;\n margin: 0;\n padding: 0;\n display: flex;\n flex-direction: column;\n min-height: 100vh;\n }\n\n .menu {\n width: 100%;\n background-color: #28a745;\n padding: 10px;\n text-align: center;\n box-shadow: 0 2px 5px rgba(0,0,0,0.1);\n margin-bottom: 10px;\n overflow-x: auto;\n white-space: nowrap;\n }\n\n .menu a {\n color: #fff;\n text-decoration: none;\n margin: 0 8px;\n font-weight: bold;\n font-size: 14px;\n display: inline-block;\n cursor: pointer;\n padding: 5px 8px;\n border-radius: 6px;\n }\n\n .menu a.active {\n background: #fff;\n color: #28a745;\n }\n\n .menu a:hover,\n .menu a:focus {\n text-decoration: underline;\n outline: 2px dashed #fff;\n outline-offset: 4px;\n }\n\n .container {\n display: flex;\n flex-direction: column;\n align-items: center;\n padding: 10px;\n flex: 1 0 auto;\n width: 100%;\n }\n\n .image-chat-wrapper {\n display: flex;\n flex-direction: column;\n width: 100%;\n max-width: 1120px;\n flex: 1;\n gap: 16px;\n }\n\n .image-container {\n flex: 1;\n text-align: center;\n margin-bottom: 15px;\n background: #ffffff;\n border-radius: 15px;\n box-shadow: 0 0 8px rgba(0,0,0,0.1);\n padding: 14px;\n }\n\n .sentence-text {\n margin: 10px 0;\n font-weight: bold;\n color: #333;\n font-size: 16px;\n }\n\n .word-box {\n margin-top: 10px;\n padding: 10px;\n background-color: #fff;\n border: 2px solid #28a745;\n border-radius: 8px;\n box-shadow: 0 0 8px rgba(0,0,0,0.1);\n font-size: 16px;\n font-weight: bold;\n color: #28a745;\n text-align: left;\n max-height: 280px;\n overflow-y: auto;\n line-height: 1.6;\n }\n\n .chat-container {\n background-color: #28a745;\n border-radius: 15px;\n box-shadow: 0 0 8px rgba(0,0,0,0.1);\n overflow: hidden;\n display: flex;\n flex-direction: column;\n max-height: 700px;\n flex: 1;\n }\n\n .chat-header {\n background-color: #1e7e34;\n color: #fff;\n padding: 12px;\n text-align: center;\n border-bottom: 1px solid #155724;\n position: relative;\n }\n\n .chat-header h2 {\n margin: 0;\n font-size: 18px;\n }\n\n .chat-header .loader {\n position: absolute;\n right: 20px;\n top: 50%;\n transform: translateY(-50%);\n display: none;\n }\n\n .chat-messages {\n padding: 12px;\n overflow-y: auto;\n flex: 1;\n background-color: #fff;\n max-height: 430px;\n }\n\n .message {\n margin-bottom: 10px;\n padding: 10px;\n border-radius: 6px;\n font-size: 14px;\n line-height: 1.5;\n white-space: pre-line;\n }\n\n .user-message {\n background-color: #ffc107;\n color: #fff;\n text-align: right;\n }\n\n .bot-message {\n background-color: #17a2b8;\n color: #fff;\n text-align: left;\n }\n\n .chat-input {\n display: flex;\n align-items: center;\n background-color: #c3e6cb;\n padding: 10px;\n justify-content: space-between;\n flex-wrap: wrap;\n gap: 8px;\n }\n\n .send-button, .stop-button {\n background-color: #17a2b8;\n color: #fff;\n font-weight: bold;\n border: none;\n border-radius: 5px;\n padding: 12px 16px;\n cursor: pointer;\n transition: background-color 0.3s;\n flex: 1;\n margin: 4px;\n max-width: 170px;\n font-size: 16px;\n }\n\n .stop-button { background-color: #dc3545; }\n\n .send-button:hover,\n .stop-button:hover,\n .send-button:focus,\n .stop-button:focus {\n background-color: #218838;\n outline: none;\n }\n\n .voice-selection {\n margin: 10px 0;\n width: 100%;\n max-width: 320px;\n }\n\n .voice-selection label {\n display: block;\n margin-bottom: 5px;\n font-weight: bold;\n color: #333;\n }\n\n .voice-selection select {\n width: 100%;\n padding: 8px;\n border-radius: 5px;\n border: 1px solid #ccc;\n font-size: 14px;\n }\n\n .loader {\n border: 4px solid #f3f3f3;\n border-top: 4px solid #17a2b8;\n border-radius: 50%;\n width: 20px;\n height: 20px;\n animation: spin 1s linear infinite;\n display: inline-block;\n margin-left: 10px;\n }\n\n @keyframes spin {\n 0% { transform: translateY(-50%) rotate(0deg); }\n 100% { transform: translateY(-50%) rotate(360deg); }\n }\n\n .face-panel {\n width: 100%;\n min-height: 330px;\n display: flex;\n flex-direction: column;\n align-items: center;\n justify-content: center;\n background: radial-gradient(circle at center, #111 0%, #000 70%);\n border-radius: 15px;\n padding: 16px 10px;\n overflow: hidden;\n position: relative;\n }\n\n .speech-bubble {\n position: relative;\n background: white;\n color: #111;\n border-radius: 20px;\n padding: 12px 18px;\n max-width: 320px;\n opacity: 0;\n transform: translateY(10px) scale(0.92);\n transition: all 0.25s ease;\n box-shadow: 0 10px 30px rgba(255,255,255,0.08);\n margin-bottom: 12px;\n font-weight: 600;\n }\n\n .speech-bubble.visible {\n opacity: 1;\n transform: translateY(0) scale(1);\n }\n\n .speech-bubble::after {\n content: '';\n position: absolute;\n bottom: -15px;\n left: 50%;\n transform: translateX(-50%);\n border: 10px solid transparent;\n border-top-color: white;\n }\n\n .face-container {\n filter: drop-shadow(0 0 45px rgba(255,255,255,0.08));\n transition: transform 0.15s ease;\n will-change: transform;\n }\n\n .face-shell {\n transition: transform 0.2s ease;\n transform-origin: 150px 150px;\n }\n\n .eye-white,\n .pupil,\n .eyebrow,\n .mouth-path,\n .nose-path,\n .cheek,\n .tear,\n .eyelid,\n .sparkle {\n transition: all 0.18s ease;\n }\n\n @media (orientation: portrait) {\n .image-chat-wrapper { flex-direction: column; }\n .image-container, .chat-container { width: 100%; max-width: 100%; }\n }\n\n @media (orientation: landscape) and (min-width: 700px) {\n .image-chat-wrapper {\n flex-direction: row;\n justify-content: space-between;\n gap: 20px;\n }\n\n .image-container, .chat-container {\n width: 48%;\n max-width: 48%;\n }\n\n .word-box { max-height: 240px; }\n .chat-header h2 { font-size: 20px; }\n .message { font-size: 15px; }\n .send-button, .stop-button {\n font-size: 18px;\n padding: 14px 20px;\n max-width: 200px;\n }\n }\n\n @media (max-width: 768px) {\n .chat-header h2 { font-size: 16px; }\n .message { font-size: 14px; }\n .send-button, .stop-button {\n font-size: 16px;\n padding: 12px 16px;\n max-width: 150px;\n }\n .word-box { font-size: 15px; }\n .voice-selection select { font-size: 14px; }\n }\n <\/style>\n<\/head>\n<body>\n <div class=\"menu\" id=\"top-menu\">\n <a href=\"#\" class=\"menu-link active\" data-section=\"office\">Office routines<\/a>\n <a href=\"#\" class=\"menu-link\" data-section=\"meeting\">Meetings<\/a>\n <a href=\"#\" class=\"menu-link\" data-section=\"coworkers\">Talking with coworkers<\/a>\n <a href=\"#\" class=\"menu-link\" data-section=\"tasks\">Work tasks<\/a>\n <a href=\"#\" class=\"menu-link\" data-section=\"emails\">Emails and messages<\/a>\n <a href=\"#\" class=\"menu-link\" data-section=\"schedule\">Work schedule<\/a>\n <a href=\"#\" class=\"menu-link\" data-section=\"phone\">Phone at work<\/a>\n <a href=\"#\" class=\"menu-link\" data-section=\"presentation\">Presentation basics<\/a>\n <\/div>\n\n <div class=\"container\">\n <div class=\"image-chat-wrapper\">\n <div class=\"image-container\">\n <div class=\"face-panel\">\n <div id=\"face-speech-bubble\" class=\"speech-bubble\">\n <p id=\"face-speech-text\"><\/p>\n <\/div>\n\n <div class=\"face-container\" id=\"face-container\">\n <svg width=\"300\" height=\"300\" viewBox=\"0 0 300 300\" id=\"face-svg\" aria-label=\"Expressive face\">\n <defs>\n <radialGradient id=\"faceGlow\" cx=\"50%\" cy=\"40%\" r=\"70%\">\n <stop offset=\"0%\" stop-color=\"rgba(255,255,255,0.12)\" \/>\n <stop offset=\"100%\" stop-color=\"rgba(255,255,255,0.02)\" \/>\n <\/radialGradient>\n <radialGradient id=\"cheekGlow\" cx=\"50%\" cy=\"50%\" r=\"60%\">\n <stop offset=\"0%\" stop-color=\"rgba(255,160,160,0.8)\" \/>\n <stop offset=\"100%\" stop-color=\"rgba(255,160,160,0)\" \/>\n <\/radialGradient>\n <\/defs>\n\n <g id=\"face-shell\" class=\"face-shell\">\n <ellipse cx=\"150\" cy=\"150\" rx=\"120\" ry=\"140\" fill=\"url(#faceGlow)\" stroke=\"rgba(255,255,255,0.15)\" stroke-width=\"2\"\/>\n <path id=\"left-eyebrow\" class=\"eyebrow\" d=\"M 60 80 Q 90 75 120 80\" fill=\"none\" stroke=\"white\" stroke-width=\"4\" stroke-linecap=\"round\"\/>\n <path id=\"right-eyebrow\" class=\"eyebrow\" d=\"M 180 80 Q 210 75 240 80\" fill=\"none\" stroke=\"white\" stroke-width=\"4\" stroke-linecap=\"round\"\/>\n\n <ellipse id=\"left-blush\" class=\"cheek\" cx=\"70\" cy=\"165\" rx=\"24\" ry=\"12\" fill=\"url(#cheekGlow)\" opacity=\"0\"\/>\n <ellipse id=\"right-blush\" class=\"cheek\" cx=\"230\" cy=\"165\" rx=\"24\" ry=\"12\" fill=\"url(#cheekGlow)\" opacity=\"0\"\/>\n\n <g id=\"left-eye-group\">\n <ellipse id=\"left-eye-white\" class=\"eye-white\" cx=\"90\" cy=\"110\" rx=\"30\" ry=\"24\" fill=\"white\"\/>\n <ellipse id=\"left-eye-lid\" class=\"eyelid\" cx=\"90\" cy=\"110\" rx=\"30\" ry=\"0\" fill=\"black\"\/>\n <circle id=\"left-pupil\" class=\"pupil\" cx=\"90\" cy=\"110\" r=\"11.5\" fill=\"black\"\/>\n <circle id=\"left-sparkle\" class=\"sparkle\" cx=\"96\" cy=\"104\" r=\"4.2\" fill=\"white\" opacity=\"0.95\"\/>\n <\/g>\n\n <g id=\"right-eye-group\">\n <ellipse id=\"right-eye-white\" class=\"eye-white\" cx=\"210\" cy=\"110\" rx=\"30\" ry=\"24\" fill=\"white\"\/>\n <ellipse id=\"right-eye-lid\" class=\"eyelid\" cx=\"210\" cy=\"110\" rx=\"30\" ry=\"0\" fill=\"black\"\/>\n <circle id=\"right-pupil\" class=\"pupil\" cx=\"210\" cy=\"110\" r=\"11.5\" fill=\"black\"\/>\n <circle id=\"right-sparkle\" class=\"sparkle\" cx=\"216\" cy=\"104\" r=\"4.2\" fill=\"white\" opacity=\"0.95\"\/>\n <\/g>\n\n <path id=\"nose\" class=\"nose-path\" d=\"M 150 140 L 142 175 Q 150 181 158 175 L 150 140\" fill=\"none\" stroke=\"white\" stroke-width=\"3\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\/>\n <path id=\"mouth\" class=\"mouth-path\" d=\"M 100 220 Q 150 232 200 220\" fill=\"none\" stroke=\"white\" stroke-width=\"5\" stroke-linecap=\"round\"\/>\n <ellipse id=\"mouth-inner\" cx=\"150\" cy=\"225\" rx=\"0\" ry=\"0\" fill=\"rgba(120,0,0,0.75)\" opacity=\"0\"\/>\n <rect id=\"teeth\" x=\"122\" y=\"220\" width=\"56\" height=\"10\" rx=\"4\" fill=\"white\" opacity=\"0\"\/>\n <path id=\"left-tear\" class=\"tear\" d=\"M 75 140 Q 69 160 75 171 Q 81 160 75 140\" fill=\"rgba(100,200,255,0)\" \/>\n <path id=\"right-tear\" class=\"tear\" d=\"M 225 140 Q 219 160 225 171 Q 231 160 225 140\" fill=\"rgba(100,200,255,0)\" \/>\n <g id=\"anger-veins\" opacity=\"0\">\n <path d=\"M 250 50 L 260 60 L 255 55 L 265 65\" stroke=\"#ff4444\" stroke-width=\"2.4\" fill=\"none\" \/>\n <\/g>\n <\/g>\n <\/svg>\n <\/div>\n <\/div>\n\n <div class=\"sentence-text\">\n Listen to the English meaning, then listen to the Spanish sentence twice, and repeat it.\n <\/div>\n <div id=\"word-box\" class=\"word-box\"><\/div>\n <\/div>\n\n <div class=\"chat-container\">\n <div class=\"chat-header\">\n <h2 id=\"section-title\">Office routines<\/h2>\n <div class=\"loader\" id=\"synthesis-loader\"><\/div>\n <\/div>\n <div class=\"chat-messages\" id=\"chat-messages\"><\/div>\n <div class=\"chat-input\">\n <div class=\"voice-selection\">\n <label for=\"spanish-voice-select\">Choose Spanish Voice:<\/label>\n <select id=\"spanish-voice-select\" aria-label=\"Select Spanish Voice\">\n <option value=\"\">Loading Spanish voices…<\/option>\n <\/select>\n <\/div>\n <button id=\"start-btn\" class=\"send-button\" aria-label=\"Start Lesson\">Start<\/button>\n <button id=\"stop-btn\" class=\"stop-button\" aria-label=\"Stop Lesson\">Stop<\/button>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n\n <div class=\"menu\" id=\"bottom-menu\">\n <a href=\"#\" class=\"menu-link active\" data-section=\"office\">Office routines<\/a>\n <a href=\"#\" class=\"menu-link\" data-section=\"meeting\">Meetings<\/a>\n <a href=\"#\" class=\"menu-link\" data-section=\"coworkers\">Talking with coworkers<\/a>\n <a href=\"#\" class=\"menu-link\" data-section=\"tasks\">Work tasks<\/a>\n <a href=\"#\" class=\"menu-link\" data-section=\"emails\">Emails and messages<\/a>\n <a href=\"#\" class=\"menu-link\" data-section=\"schedule\">Work schedule<\/a>\n <a href=\"#\" class=\"menu-link\" data-section=\"phone\">Phone at work<\/a>\n <a href=\"#\" class=\"menu-link\" data-section=\"presentation\">Presentation basics<\/a>\n <\/div>\n\n <script>\n const sectionData = {\n office: {\n title: \"Office routines\",\n intro: \"Today we will practice Spanish office routines.\",\n lessons: [\n { spanish: \"Llego a oficina temprano.\", english: \"I arrive at the office early.\", keywords: [\"llego\", \"oficina\", \"temprano\"] },\n { spanish: \"Enciendo mi computadora ahora.\", english: \"I turn on my computer now.\", keywords: [\"enciendo\", \"computadora\", \"ahora\"] },\n { spanish: \"Reviso documentos cada ma\u00f1ana.\", english: \"I review documents every morning.\", keywords: [\"reviso\", \"documentos\", \"ma\u00f1ana\", \"manana\"] },\n { spanish: \"Trabajo en mi escritorio.\", english: \"I work at my desk.\", keywords: [\"trabajo\", \"escritorio\"] },\n { spanish: \"Organizo mis archivos hoy.\", english: \"I organize my files today.\", keywords: [\"organizo\", \"archivos\", \"hoy\"] }\n ]\n },\n meeting: {\n title: \"Meetings\",\n intro: \"Today we will practice Spanish meeting phrases.\",\n lessons: [\n { spanish: \"Tengo una reuni\u00f3n hoy.\", english: \"I have a meeting today.\", keywords: [\"tengo\", \"reuni\u00f3n\", \"reunion\", \"hoy\"] },\n { spanish: \"Empieza la reuni\u00f3n ahora.\", english: \"The meeting starts now.\", keywords: [\"empieza\", \"reuni\u00f3n\", \"reunion\", \"ahora\"] },\n { spanish: \"Escucho las ideas todos.\", english: \"I listen to everyone's ideas.\", keywords: [\"escucho\", \"ideas\", \"todos\"] },\n { spanish: \"Comparto mi opini\u00f3n clara.\", english: \"I share my clear opinion.\", keywords: [\"comparto\", \"opini\u00f3n\", \"opinion\", \"clara\"] },\n { spanish: \"Terminamos la reuni\u00f3n pronto.\", english: \"We finish the meeting soon.\", keywords: [\"terminamos\", \"reuni\u00f3n\", \"reunion\", \"pronto\"] }\n ]\n },\n coworkers: {\n title: \"Talking with coworkers\",\n intro: \"Today we will practice Spanish with coworkers.\",\n lessons: [\n { spanish: \"Hablo con mi compa\u00f1ero.\", english: \"I talk with my coworker.\", keywords: [\"hablo\", \"compa\u00f1ero\", \"companero\"] },\n { spanish: \"Trabajamos muy bien juntos.\", english: \"We work very well together.\", keywords: [\"trabajamos\", \"bien\", \"juntos\"] },\n { spanish: \"Necesito su ayuda hoy.\", english: \"I need your help today.\", keywords: [\"necesito\", \"ayuda\", \"hoy\"] },\n { spanish: \"Gracias por su apoyo.\", english: \"Thank you for your support.\", keywords: [\"gracias\", \"apoyo\"] },\n { spanish: \"Comentamos el proyecto juntos.\", english: \"We discuss the project together.\", keywords: [\"comentamos\", \"proyecto\", \"juntos\"] }\n ]\n },\n tasks: {\n title: \"Work tasks\",\n intro: \"Today we will practice Spanish work tasks.\",\n lessons: [\n { spanish: \"Termino este informe hoy.\", english: \"I finish this report today.\", keywords: [\"termino\", \"informe\", \"hoy\"] },\n { spanish: \"Preparo los datos ahora.\", english: \"I prepare the data now.\", keywords: [\"preparo\", \"datos\", \"ahora\"] },\n { spanish: \"Escribo un reporte corto.\", english: \"I write a short report.\", keywords: [\"escribo\", \"reporte\", \"corto\"] },\n { spanish: \"Reviso mi trabajo final.\", english: \"I review my final work.\", keywords: [\"reviso\", \"trabajo\", \"final\"] },\n { spanish: \"Entrego la tarea ma\u00f1ana.\", english: \"I submit the task tomorrow.\", keywords: [\"entrego\", \"tarea\", \"ma\u00f1ana\", \"manana\"] }\n ]\n },\n emails: {\n title: \"Emails and messages\",\n intro: \"Today we will practice Spanish emails and messages.\",\n lessons: [\n { spanish: \"Escribo un correo formal.\", english: \"I write a formal email.\", keywords: [\"escribo\", \"correo\", \"formal\"] },\n { spanish: \"Env\u00edo el mensaje ahora.\", english: \"I send the message now.\", keywords: [\"env\u00edo\", \"envio\", \"mensaje\", \"ahora\"] },\n { spanish: \"Leo su correo hoy.\", english: \"I read your email today.\", keywords: [\"leo\", \"correo\", \"hoy\"] },\n { spanish: \"Respondo el mensaje r\u00e1pido.\", english: \"I reply to the message quickly.\", keywords: [\"respondo\", \"mensaje\", \"r\u00e1pido\", \"rapido\"] },\n { spanish: \"Adjunto el archivo correcto.\", english: \"I attach the correct file.\", keywords: [\"adjunto\", \"archivo\", \"correcto\"] }\n ]\n },\n schedule: {\n title: \"Work schedule\",\n intro: \"Today we will practice Spanish work schedule phrases.\",\n lessons: [\n { spanish: \"Trabajo de lunes viernes.\", english: \"I work from Monday to Friday.\", keywords: [\"trabajo\", \"lunes\", \"viernes\"] },\n { spanish: \"Empiezo a las ocho.\", english: \"I start at eight.\", keywords: [\"empiezo\", \"ocho\"] },\n { spanish: \"Termino a las cinco.\", english: \"I finish at five.\", keywords: [\"termino\", \"cinco\"] },\n { spanish: \"Tengo descanso al mediod\u00eda.\", english: \"I have a break at noon.\", keywords: [\"tengo\", \"descanso\", \"mediod\u00eda\", \"mediodia\"] },\n { spanish: \"Mi horario cambia ma\u00f1ana.\", english: \"My schedule changes tomorrow.\", keywords: [\"horario\", \"cambia\", \"ma\u00f1ana\", \"manana\"] }\n ]\n },\n phone: {\n title: \"Phone at work\",\n intro: \"Today we will practice Spanish phone phrases at work.\",\n lessons: [\n { spanish: \"Contesto la llamada ahora.\", english: \"I answer the call now.\", keywords: [\"contesto\", \"llamada\", \"ahora\"] },\n { spanish: \"Hablo por tel\u00e9fono aqu\u00ed.\", english: \"I speak on the phone here.\", keywords: [\"hablo\", \"tel\u00e9fono\", \"telefono\", \"aqu\u00ed\", \"aqui\"] },\n { spanish: \"Tomo un mensaje breve.\", english: \"I take a short message.\", keywords: [\"tomo\", \"mensaje\", \"breve\"] },\n { spanish: \"Llamo al cliente luego.\", english: \"I call the client later.\", keywords: [\"llamo\", \"cliente\", \"luego\"] },\n { spanish: \"Repita su n\u00famero despacio.\", english: \"Repeat your number slowly.\", keywords: [\"repita\", \"n\u00famero\", \"numero\", \"despacio\"] }\n ]\n },\n presentation: {\n title: \"Presentation basics\",\n intro: \"Today we will practice Spanish presentation basics.\",\n lessons: [\n { spanish: \"Presento mi idea hoy.\", english: \"I present my idea today.\", keywords: [\"presento\", \"idea\", \"hoy\"] },\n { spanish: \"Explico el punto principal.\", english: \"I explain the main point.\", keywords: [\"explico\", \"punto\", \"principal\"] },\n { spanish: \"Muestro esta gr\u00e1fica aqu\u00ed.\", english: \"I show this chart here.\", keywords: [\"muestro\", \"gr\u00e1fica\", \"grafica\", \"aqu\u00ed\", \"aqui\"] },\n { spanish: \"Respondo preguntas al final.\", english: \"I answer questions at the end.\", keywords: [\"respondo\", \"preguntas\", \"final\"] },\n { spanish: \"Gracias por escuchar todos.\", english: \"Thank you all for listening.\", keywords: [\"gracias\", \"escuchar\", \"todos\"] }\n ]\n }\n };\n\n let currentSection = \"office\";\n let lessons = sectionData[currentSection].lessons;\n\n const positiveFeedback = [\n \"Very good. You said it clearly.\",\n \"Excellent. Keep practicing.\",\n \"Great job. Your Spanish was clear.\",\n \"Well done. Keep going.\",\n \"Excellent work. Nice speaking.\"\n ];\n\n const constructiveFeedback = [\n \"Try again and repeat the Spanish sentence clearly.\",\n \"Good try. Please repeat the sentence one more time.\",\n \"Listen carefully and say the sentence again.\",\n \"Try to say all the Spanish words clearly.\",\n \"Please repeat after the model sentence.\"\n ];\n\n const pronunciationFeedback = [\n \"Good effort. Say it a little more clearly.\",\n \"Nice try. Focus on the key Spanish words.\",\n \"Good. Speak a little more slowly.\",\n \"Your answer is understandable. Try again with clearer pronunciation.\",\n \"Well done. Keep your speaking steady.\"\n ];\n\n const stopKeywords = [\"goodbye\", \"bye\", \"stop\", \"end lesson\", \"adi\u00f3s\", \"adios\"];\n\n let currentLessonIndex = 0;\n let isLessonActive = false;\n let speechRecognitionActive = false;\n let pendingNextQuestionTimeout = null;\n let retryCount = 0;\n const maxRetriesPerQuestion = 2;\n\n const speechSynthesisSupported = 'speechSynthesis' in window;\n const SpeechRecognitionClass = window.SpeechRecognition || window.webkitSpeechRecognition;\n const speechRecognitionSupported = !!SpeechRecognitionClass;\n\n let voices = [];\n let spanishVoices = [];\n let englishVoices = [];\n let selectedSpanishVoice = null;\n let selectedEnglishVoice = null;\n\n let recognition = null;\n let micAccessGranted = false;\n let currentListeningItem = null;\n\n let currentEmotion = 'neutral';\n let isFaceTalking = false;\n let faceTalkTimer = null;\n let faceBubbleTimer = null;\n let blinkTimer = null;\n let saccadeTimer = null;\n let breatheRAF = null;\n\n const faceContainer = document.getElementById('face-container');\n const faceShell = document.getElementById('face-shell');\n const mouth = document.getElementById('mouth');\n const mouthInner = document.getElementById('mouth-inner');\n const teeth = document.getElementById('teeth');\n const leftEyeWhite = document.getElementById('left-eye-white');\n const rightEyeWhite = document.getElementById('right-eye-white');\n const leftLid = document.getElementById('left-eye-lid');\n const rightLid = document.getElementById('right-eye-lid');\n const leftPupil = document.getElementById('left-pupil');\n const rightPupil = document.getElementById('right-pupil');\n const leftSparkle = document.getElementById('left-sparkle');\n const rightSparkle = document.getElementById('right-sparkle');\n const leftEyebrow = document.getElementById('left-eyebrow');\n const rightEyebrow = document.getElementById('right-eyebrow');\n const leftBlush = document.getElementById('left-blush');\n const rightBlush = document.getElementById('right-blush');\n const leftTear = document.getElementById('left-tear');\n const rightTear = document.getElementById('right-tear');\n const angerVeins = document.getElementById('anger-veins');\n const faceSpeechBubble = document.getElementById('face-speech-bubble');\n const faceSpeechText = document.getElementById('face-speech-text');\n\n const emotions = {\n neutral: {\n mouth: 'M 100 220 Q 150 232 200 220',\n leftEyebrow: 'M 60 80 Q 90 75 120 80',\n rightEyebrow: 'M 180 80 Q 210 75 240 80',\n eyeRY: 24,\n blush: 0,\n tears: 0,\n anger: 0,\n teeth: 0,\n mouthInnerOpacity: 0,\n mouthInnerRx: 0,\n mouthInnerRy: 0\n },\n happy: {\n mouth: 'M 92 212 Q 150 278 208 212',\n leftEyebrow: 'M 60 75 Q 90 66 120 75',\n rightEyebrow: 'M 180 75 Q 210 66 240 75',\n eyeRY: 17,\n blush: 0.48,\n tears: 0,\n anger: 0,\n teeth: 0.92,\n mouthInnerOpacity: 0.25,\n mouthInnerRx: 24,\n mouthInnerRy: 8\n },\n sad: {\n mouth: 'M 112 240 Q 150 203 188 240',\n leftEyebrow: 'M 68 72 Q 90 88 120 76',\n rightEyebrow: 'M 180 76 Q 210 88 232 72',\n eyeRY: 15,\n blush: 0,\n tears: 0.78,\n anger: 0,\n teeth: 0,\n mouthInnerOpacity: 0,\n mouthInnerRx: 0,\n mouthInnerRy: 0\n },\n confused: {\n mouth: 'M 110 224 Q 140 230 160 221 Q 182 236 190 226',\n leftEyebrow: 'M 60 86 Q 90 68 120 80',\n rightEyebrow: 'M 180 70 Q 210 86 240 76',\n eyeRY: 22,\n blush: 0,\n tears: 0,\n anger: 0,\n teeth: 0,\n mouthInnerOpacity: 0,\n mouthInnerRx: 0,\n mouthInnerRy: 0\n }\n };\n\n function setFaceEmotion(emotion) {\n const preset = emotions[emotion] || emotions.neutral;\n currentEmotion = emotion;\n mouth.setAttribute('d', preset.mouth);\n leftEyebrow.setAttribute('d', preset.leftEyebrow);\n rightEyebrow.setAttribute('d', preset.rightEyebrow);\n leftEyeWhite.setAttribute('ry', preset.eyeRY);\n rightEyeWhite.setAttribute('ry', preset.eyeRY);\n leftBlush.setAttribute('opacity', preset.blush);\n rightBlush.setAttribute('opacity', preset.blush);\n leftTear.setAttribute('fill', `rgba(100,200,255,${preset.tears})`);\n rightTear.setAttribute('fill', `rgba(100,200,255,${preset.tears})`);\n angerVeins.setAttribute('opacity', preset.anger);\n teeth.setAttribute('opacity', preset.teeth);\n mouthInner.setAttribute('opacity', preset.mouthInnerOpacity);\n mouthInner.setAttribute('rx', preset.mouthInnerRx);\n mouthInner.setAttribute('ry', preset.mouthInnerRy);\n }\n\n function blinkFace(duration = 110) {\n const currentL = parseFloat(leftEyeWhite.getAttribute('ry'));\n const currentR = parseFloat(rightEyeWhite.getAttribute('ry'));\n leftLid.setAttribute('ry', currentL + 1);\n rightLid.setAttribute('ry', currentR + 1);\n setTimeout(() => {\n leftLid.setAttribute('ry', 0);\n rightLid.setAttribute('ry', 0);\n }, duration);\n }\n\n function scheduleBlink() {\n clearTimeout(blinkTimer);\n const next = 1500 + Math.random() * 3500;\n blinkTimer = setTimeout(() => {\n blinkFace(90 + Math.random() * 80);\n if (Math.random() < 0.22) setTimeout(() => blinkFace(70), 120);\n scheduleBlink();\n }, next);\n }\n\n function idleSaccade() {\n if (isFaceTalking) return;\n const dx = (Math.random() * 2 - 1) * 4.5;\n const dy = (Math.random() * 2 - 1) * 3.2;\n leftPupil.setAttribute('cx', 90 + dx);\n leftPupil.setAttribute('cy', 110 + dy);\n rightPupil.setAttribute('cx', 210 + dx);\n rightPupil.setAttribute('cy', 110 + dy);\n leftSparkle.setAttribute('cx', 96 + dx * 0.6);\n leftSparkle.setAttribute('cy', 104 + dy * 0.6);\n rightSparkle.setAttribute('cx', 216 + dx * 0.6);\n rightSparkle.setAttribute('cy', 104 + dy * 0.6);\n }\n\n function scheduleSaccade() {\n clearTimeout(saccadeTimer);\n const next = 900 + Math.random() * 1800;\n saccadeTimer = setTimeout(() => {\n idleSaccade();\n scheduleSaccade();\n }, next);\n }\n\n function startFaceBreathing() {\n let t0 = performance.now();\n function frame(now) {\n const t = (now - t0) \/ 1000;\n const breathe = Math.sin(t * 1.8) * 1.8;\n const sway = Math.sin(t * 0.9) * 1.4;\n const tilt = Math.sin(t * 0.75) * 0.8;\n if (!isFaceTalking) {\n faceShell.setAttribute(\n 'transform',\n `translate(${sway.toFixed(2)}, ${breathe.toFixed(2)}) rotate(${tilt.toFixed(2)} 150 150)`\n );\n }\n breatheRAF = requestAnimationFrame(frame);\n }\n cancelAnimationFrame(breatheRAF);\n breatheRAF = requestAnimationFrame(frame);\n }\n\n function showFaceBubble(text, duration) {\n faceSpeechText.textContent = text;\n faceSpeechBubble.classList.add('visible');\n clearTimeout(faceBubbleTimer);\n faceBubbleTimer = setTimeout(() => {\n faceSpeechBubble.classList.remove('visible');\n }, duration + 600);\n }\n\n function stopFaceTalking() {\n isFaceTalking = false;\n clearInterval(faceTalkTimer);\n faceTalkTimer = null;\n setFaceEmotion(currentEmotion);\n }\n\n function talkingFrame(emotion) {\n const shapes = {\n neutral: [\n { d: 'M 102 220 Q 150 240 198 220', rx: 14, ry: 7, teeth: 0.1, inner: 0.25 },\n { d: 'M 96 214 Q 150 262 204 214', rx: 22, ry: 11, teeth: 0.28, inner: 0.45 },\n { d: 'M 108 224 Q 150 236 192 224', rx: 12, ry: 5, teeth: 0, inner: 0.18 }\n ],\n happy: [\n { d: 'M 92 212 Q 150 280 208 212', rx: 24, ry: 10, teeth: 0.9, inner: 0.35 },\n { d: 'M 96 216 Q 150 266 204 216', rx: 18, ry: 8, teeth: 0.75, inner: 0.28 },\n { d: 'M 88 210 Q 150 286 212 210', rx: 28, ry: 12, teeth: 1.0, inner: 0.4 }\n ],\n sad: [\n { d: 'M 112 238 Q 150 212 188 238', rx: 10, ry: 4, teeth: 0, inner: 0.1 },\n { d: 'M 108 234 Q 150 220 192 234', rx: 12, ry: 5, teeth: 0, inner: 0.14 },\n { d: 'M 114 240 Q 150 208 186 240', rx: 8, ry: 4, teeth: 0, inner: 0.08 }\n ],\n confused: [\n { d: 'M 110 224 Q 140 230 160 221 Q 182 236 190 226', rx: 10, ry: 4, teeth: 0, inner: 0.1 },\n { d: 'M 106 222 Q 140 236 162 220 Q 184 242 194 226', rx: 14, ry: 6, teeth: 0, inner: 0.18 },\n { d: 'M 112 225 Q 141 228 161 222 Q 181 234 189 225', rx: 9, ry: 4, teeth: 0, inner: 0.08 }\n ]\n };\n const list = shapes[emotion] || shapes.neutral;\n const chosen = list[Math.floor(Math.random() * list.length)];\n mouth.setAttribute('d', chosen.d);\n mouthInner.setAttribute('opacity', chosen.inner);\n mouthInner.setAttribute('rx', chosen.rx);\n mouthInner.setAttribute('ry', chosen.ry);\n teeth.setAttribute('opacity', chosen.teeth);\n\n const bobX = (Math.random() * 2 - 1) * 1.5;\n const bobY = -1.5 + Math.random() * 2.8;\n const tilt = (Math.random() * 2 - 1) * 2.2;\n faceShell.setAttribute(\n 'transform',\n `translate(${bobX.toFixed(2)}, ${bobY.toFixed(2)}) rotate(${tilt.toFixed(2)} 150 150)`\n );\n }\n\n function faceSpeak(text, emotion = \"neutral\", durationHint = null) {\n const clean = (text || \"\").trim();\n if (!clean) return;\n clearInterval(faceTalkTimer);\n isFaceTalking = true;\n setFaceEmotion(emotion);\n const duration = durationHint || Math.max(1600, clean.length * 70);\n showFaceBubble(clean, duration);\n faceTalkTimer = setInterval(() => talkingFrame(emotion), 120);\n setTimeout(() => stopFaceTalking(), duration);\n }\n\n document.addEventListener('mousemove', (e) => {\n if (isFaceTalking) return;\n const svg = document.getElementById('face-svg');\n const rect = svg.getBoundingClientRect();\n const centerX = rect.left + rect.width \/ 2;\n const centerY = rect.top + rect.height \/ 2;\n const dx = (e.clientX - centerX) \/ 45;\n const dy = (e.clientY - centerY) \/ 45;\n const moveX = Math.max(-5, Math.min(5, dx));\n const moveY = Math.max(-4, Math.min(4, dy));\n leftPupil.setAttribute('cx', 90 + moveX);\n leftPupil.setAttribute('cy', 110 + moveY);\n rightPupil.setAttribute('cx', 210 + moveX);\n rightPupil.setAttribute('cy', 110 + moveY);\n leftSparkle.setAttribute('cx', 96 + moveX * 0.6);\n leftSparkle.setAttribute('cy', 104 + moveY * 0.6);\n rightSparkle.setAttribute('cx', 216 + moveX * 0.6);\n rightSparkle.setAttribute('cy', 104 + moveY * 0.6);\n faceContainer.style.transform = `translate(${(moveX * 0.25).toFixed(2)}px, ${(moveY * 0.2).toFixed(2)}px)`;\n });\n\n function initialize() {\n loadVoices();\n setFaceEmotion('neutral');\n scheduleBlink();\n scheduleSaccade();\n startFaceBreathing();\n bindSectionMenus();\n\n if (!speechSynthesisSupported) appendMessage(\"Sorry, your browser does not support speech synthesis.\", \"bot\");\n if (!speechRecognitionSupported) appendMessage(\"Sorry, your browser does not support speech recognition.\", \"bot\");\n if (speechRecognitionSupported) createRecognitionInstance();\n\n updateSectionUI();\n appendMessage(\"Click Start to begin the Spanish lesson.\", \"bot\");\n\n document.getElementById('start-btn').onclick = async function() {\n if (isLessonActive) return;\n if (!speechSynthesisSupported || !speechRecognitionSupported) return;\n\n clearChat();\n clearWordBox();\n stopAllAudioAndRecognition();\n clearPendingTimeout();\n\n const micOk = await requestMicrophoneOnce();\n if (!micOk) {\n appendMessage(\"Microphone access is required for speaking practice.\", \"bot\");\n return;\n }\n\n isLessonActive = true;\n currentLessonIndex = 0;\n retryCount = 0;\n\n const greetingText = sectionData[currentSection].intro;\n appendMessage(greetingText, 'bot');\n faceSpeak(\"Welcome.\", \"happy\");\n showSynthesisLoader(true);\n\n speakEnglish(greetingText).then(() => {\n showSynthesisLoader(false);\n startLesson();\n });\n };\n\n document.getElementById('stop-btn').onclick = function() {\n endLesson(true);\n };\n }\n\n function bindSectionMenus() {\n document.querySelectorAll('.menu-link').forEach(link => {\n link.addEventListener('click', function(e) {\n e.preventDefault();\n const section = this.dataset.section;\n switchSection(section);\n });\n });\n }\n\n function switchSection(section) {\n if (!sectionData[section]) return;\n stopAllAudioAndRecognition();\n isLessonActive = false;\n currentListeningItem = null;\n currentSection = section;\n lessons = sectionData[currentSection].lessons;\n currentLessonIndex = 0;\n retryCount = 0;\n clearChat();\n clearWordBox();\n updateSectionUI();\n appendMessage(`Section changed to ${sectionData[currentSection].title}. Click Start to begin.`, 'bot');\n }\n\n function updateSectionUI() {\n document.getElementById('section-title').textContent = sectionData[currentSection].title;\n document.querySelectorAll('.menu-link').forEach(link => {\n link.classList.toggle('active', link.dataset.section === currentSection);\n });\n }\n\n async function requestMicrophoneOnce() {\n if (micAccessGranted) return true;\n if (!navigator.mediaDevices || !navigator.mediaDevices.getUserMedia) {\n appendMessage(\"Your browser does not support microphone access.\", \"bot\");\n return false;\n }\n try {\n const stream = await navigator.mediaDevices.getUserMedia({ audio: true });\n stream.getTracks().forEach(track => track.stop());\n micAccessGranted = true;\n return true;\n } catch (error) {\n appendMessage(\"Microphone access was blocked. Please allow microphone access and try again.\", \"bot\");\n faceSpeak(\"Microphone access was blocked.\", \"sad\");\n return false;\n }\n }\n\n function createRecognitionInstance() {\n recognition = new SpeechRecognitionClass();\n recognition.lang = 'es-ES';\n recognition.interimResults = false;\n recognition.continuous = false;\n recognition.maxAlternatives = 1;\n\n recognition.onresult = function(event) {\n if (!isLessonActive || !speechRecognitionActive || !currentListeningItem) return;\n const transcript = event.results[0][0].transcript.trim();\n const formattedInput = formatSentence(transcript);\n\n speechRecognitionActive = false;\n showRecognitionLoader(false);\n appendMessage(formattedInput, 'user');\n\n if (checkStopKeywords(formattedInput.toLowerCase())) {\n endLesson(true);\n return;\n }\n\n const feedbackType = analyzeResponse(formattedInput, currentListeningItem.keywords);\n let feedbackMessage = \"\";\n let faceEmotion = \"neutral\";\n\n if (feedbackType === \"positive\") {\n feedbackMessage = pickRandom(positiveFeedback);\n faceEmotion = \"happy\";\n } else if (feedbackType === \"pronunciation\") {\n feedbackMessage = pickRandom(pronunciationFeedback);\n faceEmotion = \"neutral\";\n } else {\n feedbackMessage = pickRandom(constructiveFeedback);\n faceEmotion = \"confused\";\n }\n\n appendMessage(feedbackMessage, 'bot');\n faceSpeak(feedbackMessage, faceEmotion);\n showSynthesisLoader(true);\n\n speakEnglish(feedbackMessage).then(() => {\n showSynthesisLoader(false);\n if (!isLessonActive) return;\n currentLessonIndex++;\n clearPendingTimeout();\n pendingNextQuestionTimeout = setTimeout(() => startLesson(), 1600);\n });\n };\n\n recognition.onspeechend = function() {\n if (speechRecognitionActive && recognition) {\n try { recognition.stop(); } catch (e) {}\n }\n };\n\n recognition.onerror = function(event) {\n speechRecognitionActive = false;\n showRecognitionLoader(false);\n if (!isLessonActive || !currentListeningItem) return;\n\n let errorMessage = \"\";\n switch (event.error) {\n case \"not-allowed\":\n micAccessGranted = false;\n errorMessage = \"Microphone access was blocked. Please allow microphone access and try again.\";\n appendMessage(errorMessage, 'bot');\n faceSpeak(errorMessage, \"sad\");\n break;\n\n case \"no-speech\":\n retryCount++;\n if (retryCount <= maxRetriesPerQuestion) {\n errorMessage = \"I did not hear you. Please repeat the Spanish sentence again.\";\n appendMessage(errorMessage, 'bot');\n faceSpeak(\"Please repeat.\", \"confused\");\n showSynthesisLoader(true);\n speakSpanish(\"Por favor, repite.\").then(() => {\n showSynthesisLoader(false);\n listenUserResponse(currentListeningItem);\n });\n } else {\n errorMessage = \"Let's go to the next sentence.\";\n appendMessage(errorMessage, 'bot');\n faceSpeak(errorMessage, \"neutral\");\n showSynthesisLoader(true);\n speakEnglish(errorMessage).then(() => {\n showSynthesisLoader(false);\n currentLessonIndex++;\n startLesson();\n });\n }\n break;\n\n default:\n appendMessage(\"There was a speech recognition error. Please try again.\", \"bot\");\n faceSpeak(\"Please try again.\", \"sad\");\n showSynthesisLoader(true);\n speakSpanish(\"Por favor, intenta otra vez.\").then(() => {\n showSynthesisLoader(false);\n listenUserResponse(currentListeningItem);\n });\n break;\n }\n };\n\n recognition.onend = function() {\n speechRecognitionActive = false;\n showRecognitionLoader(false);\n };\n }\n\n function loadVoices() {\n const fillVoices = () => {\n voices = window.speechSynthesis.getVoices();\n spanishVoices = voices.filter(v =>\n \/^es(-|_)\/i.test(v.lang) || \/spanish|espa\u00f1ol\/i.test(v.name)\n );\n englishVoices = voices.filter(v =>\n \/^en(-|_)\/i.test(v.lang) || \/english\/i.test(v.name)\n );\n\n spanishVoices.sort((a, b) => getSpanishVoicePriority(a) - getSpanishVoicePriority(b));\n englishVoices.sort((a, b) => getEnglishVoicePriority(a) - getEnglishVoicePriority(b));\n\n selectedSpanishVoice = spanishVoices[0] || null;\n selectedEnglishVoice = englishVoices[0] || null;\n populateSpanishVoiceList();\n };\n\n fillVoices();\n if (typeof speechSynthesis !== \"undefined\") speechSynthesis.onvoiceschanged = fillVoices;\n }\n\n function getSpanishVoicePriority(voice) {\n const name = voice.name.toLowerCase();\n if (name.includes(\"google\") && (name.includes(\"espa\u00f1ol\") || name.includes(\"spanish\"))) return 1;\n if (name.includes(\"microsoft\") && (name.includes(\"espa\u00f1ol\") || name.includes(\"spanish\"))) return 2;\n if (name.includes(\"spanish\") || name.includes(\"espa\u00f1ol\")) return 3;\n return 10;\n }\n\n function getEnglishVoicePriority(voice) {\n const name = voice.name.toLowerCase();\n if (name.includes(\"google us english\")) return 1;\n if (name.includes(\"google uk english\")) return 2;\n if (name.includes(\"microsoft\") && name.includes(\"english\")) return 3;\n if (name.includes(\"english\")) return 4;\n return 10;\n }\n\n function populateSpanishVoiceList() {\n const voiceSelect = document.getElementById('spanish-voice-select');\n voiceSelect.innerHTML = '';\n\n if (!spanishVoices.length) {\n const option = document.createElement('option');\n option.value = \"\";\n option.textContent = \"No Spanish voices available\";\n voiceSelect.appendChild(option);\n voiceSelect.disabled = true;\n selectedSpanishVoice = null;\n return;\n }\n\n spanishVoices.forEach((voice, index) => {\n const option = document.createElement('option');\n option.value = String(index);\n option.textContent = `${voice.name} (${voice.lang})`;\n voiceSelect.appendChild(option);\n });\n\n selectedSpanishVoice = spanishVoices[0];\n voiceSelect.value = \"0\";\n voiceSelect.disabled = false;\n\n voiceSelect.onchange = () => {\n const index = parseInt(voiceSelect.value, 10);\n selectedSpanishVoice = spanishVoices[index] || spanishVoices[0];\n };\n }\n\n function startLesson() {\n if (!isLessonActive) return;\n if (currentLessonIndex >= lessons.length) {\n endLesson(false);\n return;\n }\n retryCount = 0;\n askCurrentSentence();\n }\n\n function askCurrentSentence() {\n if (!isLessonActive) return;\n const item = lessons[currentLessonIndex];\n const sentenceNumber = currentLessonIndex + 1;\n const displayText = `Sentence ${sentenceNumber}.\\nEnglish: ${item.english}\\nSpanish: ${item.spanish}`;\n appendMessage(displayText, 'bot');\n\n addSentenceToBox(`English: ${item.english}`);\n addSentenceToBox(`Spanish: ${item.spanish}`);\n addSentenceToBox(`--------------------`);\n\n faceSpeak(item.spanish, \"neutral\");\n showSynthesisLoader(true);\n\n speakEnglish(`Sentence ${sentenceNumber}. ${item.english}`)\n .then(() => speakSpanish(item.spanish))\n .then(() => speakSpanish(item.spanish))\n .then(() => {\n showSynthesisLoader(false);\n listenUserResponse(item);\n });\n }\n\n function listenUserResponse(item) {\n if (!isLessonActive || !recognition) return;\n stopRecognitionOnly();\n currentListeningItem = item;\n recognition.lang = 'es-ES';\n speechRecognitionActive = true;\n showRecognitionLoader(true);\n appendMessage(\"Listening... Please repeat in Spanish.\", \"bot\");\n faceSpeak(\"Escucha y repite.\", \"neutral\", 1400);\n\n try {\n recognition.start();\n } catch (err) {\n speechRecognitionActive = false;\n showRecognitionLoader(false);\n appendMessage(\"The microphone could not start. Please try again.\", \"bot\");\n faceSpeak(\"Please try again.\", \"sad\");\n }\n }\n\n function analyzeResponse(userInput, keywords) {\n const input = userInput.toLowerCase();\n let matchCount = 0;\n keywords.forEach(keyword => {\n if (input.includes(keyword.toLowerCase())) matchCount++;\n });\n const wordCount = input.split(\/\\s+\/).filter(Boolean).length;\n if (matchCount >= 2 || wordCount >= 4) return \"positive\";\n if (matchCount >= 1) return \"pronunciation\";\n return \"constructive\";\n }\n\n function checkStopKeywords(userInput) {\n const pattern = new RegExp(\"\\\\b(\" + stopKeywords.map(escapeRegex).join(\"|\") + \")\\\\b\", \"i\");\n return pattern.test(userInput);\n }\n\n function formatSentence(text) {\n if (!text) return \"\";\n text = text.trim();\n text = text.charAt(0).toUpperCase() + text.slice(1);\n if (!\/[.?!]$\/.test(text)) text += \".\";\n return text;\n }\n\n function addSentenceToBox(sentence) {\n const wordBox = document.getElementById('word-box');\n const sentenceElement = document.createElement('div');\n sentenceElement.innerText = sentence;\n wordBox.appendChild(sentenceElement);\n wordBox.scrollTop = wordBox.scrollHeight;\n }\n\n function clearWordBox() {\n document.getElementById('word-box').innerHTML = \"\";\n }\n\n function clearChat() {\n document.getElementById('chat-messages').innerHTML = \"\";\n }\n\n function endLesson(userStopped = false) {\n stopAllAudioAndRecognition();\n isLessonActive = false;\n currentListeningItem = null;\n\n const message = userStopped\n ? \"Thank you. Goodbye.\"\n : `Excellent. You finished the ${sectionData[currentSection].title} section. Keep practicing.`;\n\n appendMessage(message, \"bot\");\n faceSpeak(message, userStopped ? \"neutral\" : \"happy\");\n showSynthesisLoader(true);\n\n if (userStopped) {\n speakEnglish(\"Thank you. Goodbye.\")\n .then(() => speakSpanish(\"Adi\u00f3s.\"))\n .then(() => showSynthesisLoader(false));\n } else {\n speakEnglish(message).then(() => showSynthesisLoader(false));\n }\n }\n\n function speakText(text, lang, voiceObj) {\n return new Promise(resolve => {\n if (!speechSynthesisSupported) {\n resolve();\n return;\n }\n window.speechSynthesis.cancel();\n const utterance = new SpeechSynthesisUtterance(text);\n utterance.lang = lang;\n utterance.rate = 0.9;\n utterance.pitch = 1.0;\n if (voiceObj) utterance.voice = voiceObj;\n utterance.onend = () => resolve();\n utterance.onerror = () => resolve();\n window.speechSynthesis.speak(utterance);\n });\n }\n\n function speakEnglish(text) {\n return speakText(text, \"en-US\", selectedEnglishVoice);\n }\n\n function speakSpanish(text) {\n return speakText(text, \"es-ES\", selectedSpanishVoice);\n }\n\n function appendMessage(text, sender) {\n const messageContainer = document.getElementById('chat-messages');\n const messageElement = document.createElement('div');\n messageElement.classList.add('message');\n messageElement.classList.add(sender === 'bot' ? 'bot-message' : 'user-message');\n messageElement.innerText = text;\n messageContainer.appendChild(messageElement);\n messageContainer.scrollTop = messageContainer.scrollHeight;\n }\n\n function showSynthesisLoader(show) {\n const loader = document.getElementById('synthesis-loader');\n loader.style.display = show ? 'inline-block' : 'none';\n loader.style.borderTop = '4px solid #17a2b8';\n }\n\n function showRecognitionLoader(show) {\n const loader = document.getElementById('synthesis-loader');\n loader.style.display = show ? 'inline-block' : 'none';\n loader.style.borderTop = show ? '4px solid #ffc107' : '4px solid #17a2b8';\n }\n\n function clearPendingTimeout() {\n if (pendingNextQuestionTimeout) {\n clearTimeout(pendingNextQuestionTimeout);\n pendingNextQuestionTimeout = null;\n }\n }\n\n function stopRecognitionOnly() {\n if (recognition) {\n try { recognition.stop(); } catch (e) {}\n }\n speechRecognitionActive = false;\n showRecognitionLoader(false);\n }\n\n function stopAllAudioAndRecognition() {\n clearPendingTimeout();\n stopRecognitionOnly();\n if (speechSynthesisSupported) window.speechSynthesis.cancel();\n showSynthesisLoader(false);\n stopFaceTalking();\n faceSpeechBubble.classList.remove('visible');\n }\n\n function pickRandom(arr) {\n return arr[Math.floor(Math.random() * arr.length)];\n }\n\n function escapeRegex(str) {\n return str.replace(\/[.*+?^${}()|[\\]\\\\]\/g, \"\\\\$&\");\n }\n\n window.onload = initialize;\n <\/script>\n<\/body>\n<\/html>\n","protected":false},"excerpt":{"rendered":"<p>Learn Spanish: Work and Related Themes Office routines Meetings Talking with coworkers Work tasks Emails and messages Work schedule Phone<\/p>\n","protected":false},"author":1,"featured_media":101,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"colormag_page_layout":"default_layout","footnotes":""},"categories":[63,54],"tags":[],"class_list":["post-869","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-intermediate","category-spanish"],"_links":{"self":[{"href":"https:\/\/i-cte.org\/robot\/wp-json\/wp\/v2\/posts\/869","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/i-cte.org\/robot\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/i-cte.org\/robot\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/i-cte.org\/robot\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/i-cte.org\/robot\/wp-json\/wp\/v2\/comments?post=869"}],"version-history":[{"count":1,"href":"https:\/\/i-cte.org\/robot\/wp-json\/wp\/v2\/posts\/869\/revisions"}],"predecessor-version":[{"id":870,"href":"https:\/\/i-cte.org\/robot\/wp-json\/wp\/v2\/posts\/869\/revisions\/870"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/i-cte.org\/robot\/wp-json\/wp\/v2\/media\/101"}],"wp:attachment":[{"href":"https:\/\/i-cte.org\/robot\/wp-json\/wp\/v2\/media?parent=869"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/i-cte.org\/robot\/wp-json\/wp\/v2\/categories?post=869"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/i-cte.org\/robot\/wp-json\/wp\/v2\/tags?post=869"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}

{"id":869,"date":"2026-03-12T08:27:35","date_gmt":"2026-03-12T08:27:35","guid":{"rendered":"https:\/\/i-cte.org\/robot\/?p=869"},"modified":"2026-03-12T08:27:35","modified_gmt":"2026-03-12T08:27:35","slug":"spanish-work","status":"publish","type":"post","link":"https:\/\/i-cte.org\/robot\/spanish-work\/","title":{"rendered":"Spanish: Work"},"content":{"rendered":"\n\n\n\n \n \n Learn Spanish: Work and Related Themes<\/title>\n <style>\n * { box-sizing: border-box; }\n\n body {\n font-family: Arial, sans-serif;\n background-color: #f4f6f8;\n margin: 0;\n padding: 0;\n display: flex;\n flex-direction: column;\n min-height: 100vh;\n }\n\n .menu {\n width: 100%;\n background-color: #28a745;\n padding: 10px;\n text-align: center;\n box-shadow: 0 2px 5px rgba(0,0,0,0.1);\n margin-bottom: 10px;\n overflow-x: auto;\n white-space: nowrap;\n }\n\n .menu a {\n color: #fff;\n text-decoration: none;\n margin: 0 8px;\n font-weight: bold;\n font-size: 14px;\n display: inline-block;\n cursor: pointer;\n padding: 5px 8px;\n border-radius: 6px;\n }\n\n .menu a.active {\n background: #fff;\n color: #28a745;\n }\n\n .menu a:hover,\n .menu a:focus {\n text-decoration: underline;\n outline: 2px dashed #fff;\n outline-offset: 4px;\n }\n\n .container {\n display: flex;\n flex-direction: column;\n align-items: center;\n padding: 10px;\n flex: 1 0 auto;\n width: 100%;\n }\n\n .image-chat-wrapper {\n display: flex;\n flex-direction: column;\n width: 100%;\n max-width: 1120px;\n flex: 1;\n gap: 16px;\n }\n\n .image-container {\n flex: 1;\n text-align: center;\n margin-bottom: 15px;\n background: #ffffff;\n border-radius: 15px;\n box-shadow: 0 0 8px rgba(0,0,0,0.1);\n padding: 14px;\n }\n\n .sentence-text {\n margin: 10px 0;\n font-weight: bold;\n color: #333;\n font-size: 16px;\n }\n\n .word-box {\n margin-top: 10px;\n padding: 10px;\n background-color: #fff;\n border: 2px solid #28a745;\n border-radius: 8px;\n box-shadow: 0 0 8px rgba(0,0,0,0.1);\n font-size: 16px;\n font-weight: bold;\n color: #28a745;\n text-align: left;\n max-height: 280px;\n overflow-y: auto;\n line-height: 1.6;\n }\n\n .chat-container {\n background-color: #28a745;\n border-radius: 15px;\n box-shadow: 0 0 8px rgba(0,0,0,0.1);\n overflow: hidden;\n display: flex;\n flex-direction: column;\n max-height: 700px;\n flex: 1;\n }\n\n .chat-header {\n background-color: #1e7e34;\n color: #fff;\n padding: 12px;\n text-align: center;\n border-bottom: 1px solid #155724;\n position: relative;\n }\n\n .chat-header h2 {\n margin: 0;\n font-size: 18px;\n }\n\n .chat-header .loader {\n position: absolute;\n right: 20px;\n top: 50%;\n transform: translateY(-50%);\n display: none;\n }\n\n .chat-messages {\n padding: 12px;\n overflow-y: auto;\n flex: 1;\n background-color: #fff;\n max-height: 430px;\n }\n\n .message {\n margin-bottom: 10px;\n padding: 10px;\n border-radius: 6px;\n font-size: 14px;\n line-height: 1.5;\n white-space: pre-line;\n }\n\n .user-message {\n background-color: #ffc107;\n color: #fff;\n text-align: right;\n }\n\n .bot-message {\n background-color: #17a2b8;\n color: #fff;\n text-align: left;\n }\n\n .chat-input {\n display: flex;\n align-items: center;\n background-color: #c3e6cb;\n padding: 10px;\n justify-content: space-between;\n flex-wrap: wrap;\n gap: 8px;\n }\n\n .send-button, .stop-button {\n background-color: #17a2b8;\n color: #fff;\n font-weight: bold;\n border: none;\n border-radius: 5px;\n padding: 12px 16px;\n cursor: pointer;\n transition: background-color 0.3s;\n flex: 1;\n margin: 4px;\n max-width: 170px;\n font-size: 16px;\n }\n\n .stop-button { background-color: #dc3545; }\n\n .send-button:hover,\n .stop-button:hover,\n .send-button:focus,\n .stop-button:focus {\n background-color: #218838;\n outline: none;\n }\n\n .voice-selection {\n margin: 10px 0;\n width: 100%;\n max-width: 320px;\n }\n\n .voice-selection label {\n display: block;\n margin-bottom: 5px;\n font-weight: bold;\n color: #333;\n }\n\n .voice-selection select {\n width: 100%;\n padding: 8px;\n border-radius: 5px;\n border: 1px solid #ccc;\n font-size: 14px;\n }\n\n .loader {\n border: 4px solid #f3f3f3;\n border-top: 4px solid #17a2b8;\n border-radius: 50%;\n width: 20px;\n height: 20px;\n animation: spin 1s linear infinite;\n display: inline-block;\n margin-left: 10px;\n }\n\n @keyframes spin {\n 0% { transform: translateY(-50%) rotate(0deg); }\n 100% { transform: translateY(-50%) rotate(360deg); }\n }\n\n .face-panel {\n width: 100%;\n min-height: 330px;\n display: flex;\n flex-direction: column;\n align-items: center;\n justify-content: center;\n background: radial-gradient(circle at center, #111 0%, #000 70%);\n border-radius: 15px;\n padding: 16px 10px;\n overflow: hidden;\n position: relative;\n }\n\n .speech-bubble {\n position: relative;\n background: white;\n color: #111;\n border-radius: 20px;\n padding: 12px 18px;\n max-width: 320px;\n opacity: 0;\n transform: translateY(10px) scale(0.92);\n transition: all 0.25s ease;\n box-shadow: 0 10px 30px rgba(255,255,255,0.08);\n margin-bottom: 12px;\n font-weight: 600;\n }\n\n .speech-bubble.visible {\n opacity: 1;\n transform: translateY(0) scale(1);\n }\n\n .speech-bubble::after {\n content: '';\n position: absolute;\n bottom: -15px;\n left: 50%;\n transform: translateX(-50%);\n border: 10px solid transparent;\n border-top-color: white;\n }\n\n .face-container {\n filter: drop-shadow(0 0 45px rgba(255,255,255,0.08));\n transition: transform 0.15s ease;\n will-change: transform;\n }\n\n .face-shell {\n transition: transform 0.2s ease;\n transform-origin: 150px 150px;\n }\n\n .eye-white,\n .pupil,\n .eyebrow,\n .mouth-path,\n .nose-path,\n .cheek,\n .tear,\n .eyelid,\n .sparkle {\n transition: all 0.18s ease;\n }\n\n @media (orientation: portrait) {\n .image-chat-wrapper { flex-direction: column; }\n .image-container, .chat-container { width: 100%; max-width: 100%; }\n }\n\n @media (orientation: landscape) and (min-width: 700px) {\n .image-chat-wrapper {\n flex-direction: row;\n justify-content: space-between;\n gap: 20px;\n }\n\n .image-container, .chat-container {\n width: 48%;\n max-width: 48%;\n }\n\n .word-box { max-height: 240px; }\n .chat-header h2 { font-size: 20px; }\n .message { font-size: 15px; }\n .send-button, .stop-button {\n font-size: 18px;\n padding: 14px 20px;\n max-width: 200px;\n }\n }\n\n @media (max-width: 768px) {\n .chat-header h2 { font-size: 16px; }\n .message { font-size: 14px; }\n .send-button, .stop-button {\n font-size: 16px;\n padding: 12px 16px;\n max-width: 150px;\n }\n .word-box { font-size: 15px; }\n .voice-selection select { font-size: 14px; }\n }\n <\/style>\n<\/head>\n<body>\n <div class=\"menu\" id=\"top-menu\">\n <a href=\"#\" class=\"menu-link active\" data-section=\"office\">Office routines<\/a>\n <a href=\"#\" class=\"menu-link\" data-section=\"meeting\">Meetings<\/a>\n <a href=\"#\" class=\"menu-link\" data-section=\"coworkers\">Talking with coworkers<\/a>\n <a href=\"#\" class=\"menu-link\" data-section=\"tasks\">Work tasks<\/a>\n <a href=\"#\" class=\"menu-link\" data-section=\"emails\">Emails and messages<\/a>\n <a href=\"#\" class=\"menu-link\" data-section=\"schedule\">Work schedule<\/a>\n <a href=\"#\" class=\"menu-link\" data-section=\"phone\">Phone at work<\/a>\n <a href=\"#\" class=\"menu-link\" data-section=\"presentation\">Presentation basics<\/a>\n <\/div>\n\n <div class=\"container\">\n <div class=\"image-chat-wrapper\">\n <div class=\"image-container\">\n <div class=\"face-panel\">\n <div id=\"face-speech-bubble\" class=\"speech-bubble\">\n <p id=\"face-speech-text\"><\/p>\n <\/div>\n\n <div class=\"face-container\" id=\"face-container\">\n <svg width=\"300\" height=\"300\" viewBox=\"0 0 300 300\" id=\"face-svg\" aria-label=\"Expressive face\">\n <defs>\n <radialGradient id=\"faceGlow\" cx=\"50%\" cy=\"40%\" r=\"70%\">\n <stop offset=\"0%\" stop-color=\"rgba(255,255,255,0.12)\" \/>\n <stop offset=\"100%\" stop-color=\"rgba(255,255,255,0.02)\" \/>\n <\/radialGradient>\n <radialGradient id=\"cheekGlow\" cx=\"50%\" cy=\"50%\" r=\"60%\">\n <stop offset=\"0%\" stop-color=\"rgba(255,160,160,0.8)\" \/>\n <stop offset=\"100%\" stop-color=\"rgba(255,160,160,0)\" \/>\n <\/radialGradient>\n <\/defs>\n\n <g id=\"face-shell\" class=\"face-shell\">\n <ellipse cx=\"150\" cy=\"150\" rx=\"120\" ry=\"140\" fill=\"url(#faceGlow)\" stroke=\"rgba(255,255,255,0.15)\" stroke-width=\"2\"\/>\n <path id=\"left-eyebrow\" class=\"eyebrow\" d=\"M 60 80 Q 90 75 120 80\" fill=\"none\" stroke=\"white\" stroke-width=\"4\" stroke-linecap=\"round\"\/>\n <path id=\"right-eyebrow\" class=\"eyebrow\" d=\"M 180 80 Q 210 75 240 80\" fill=\"none\" stroke=\"white\" stroke-width=\"4\" stroke-linecap=\"round\"\/>\n\n <ellipse id=\"left-blush\" class=\"cheek\" cx=\"70\" cy=\"165\" rx=\"24\" ry=\"12\" fill=\"url(#cheekGlow)\" opacity=\"0\"\/>\n <ellipse id=\"right-blush\" class=\"cheek\" cx=\"230\" cy=\"165\" rx=\"24\" ry=\"12\" fill=\"url(#cheekGlow)\" opacity=\"0\"\/>\n\n <g id=\"left-eye-group\">\n <ellipse id=\"left-eye-white\" class=\"eye-white\" cx=\"90\" cy=\"110\" rx=\"30\" ry=\"24\" fill=\"white\"\/>\n <ellipse id=\"left-eye-lid\" class=\"eyelid\" cx=\"90\" cy=\"110\" rx=\"30\" ry=\"0\" fill=\"black\"\/>\n <circle id=\"left-pupil\" class=\"pupil\" cx=\"90\" cy=\"110\" r=\"11.5\" fill=\"black\"\/>\n <circle id=\"left-sparkle\" class=\"sparkle\" cx=\"96\" cy=\"104\" r=\"4.2\" fill=\"white\" opacity=\"0.95\"\/>\n <\/g>\n\n <g id=\"right-eye-group\">\n <ellipse id=\"right-eye-white\" class=\"eye-white\" cx=\"210\" cy=\"110\" rx=\"30\" ry=\"24\" fill=\"white\"\/>\n <ellipse id=\"right-eye-lid\" class=\"eyelid\" cx=\"210\" cy=\"110\" rx=\"30\" ry=\"0\" fill=\"black\"\/>\n <circle id=\"right-pupil\" class=\"pupil\" cx=\"210\" cy=\"110\" r=\"11.5\" fill=\"black\"\/>\n <circle id=\"right-sparkle\" class=\"sparkle\" cx=\"216\" cy=\"104\" r=\"4.2\" fill=\"white\" opacity=\"0.95\"\/>\n <\/g>\n\n <path id=\"nose\" class=\"nose-path\" d=\"M 150 140 L 142 175 Q 150 181 158 175 L 150 140\" fill=\"none\" stroke=\"white\" stroke-width=\"3\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\/>\n <path id=\"mouth\" class=\"mouth-path\" d=\"M 100 220 Q 150 232 200 220\" fill=\"none\" stroke=\"white\" stroke-width=\"5\" stroke-linecap=\"round\"\/>\n <ellipse id=\"mouth-inner\" cx=\"150\" cy=\"225\" rx=\"0\" ry=\"0\" fill=\"rgba(120,0,0,0.75)\" opacity=\"0\"\/>\n <rect id=\"teeth\" x=\"122\" y=\"220\" width=\"56\" height=\"10\" rx=\"4\" fill=\"white\" opacity=\"0\"\/>\n <path id=\"left-tear\" class=\"tear\" d=\"M 75 140 Q 69 160 75 171 Q 81 160 75 140\" fill=\"rgba(100,200,255,0)\" \/>\n <path id=\"right-tear\" class=\"tear\" d=\"M 225 140 Q 219 160 225 171 Q 231 160 225 140\" fill=\"rgba(100,200,255,0)\" \/>\n <g id=\"anger-veins\" opacity=\"0\">\n <path d=\"M 250 50 L 260 60 L 255 55 L 265 65\" stroke=\"#ff4444\" stroke-width=\"2.4\" fill=\"none\" \/>\n <\/g>\n <\/g>\n <\/svg>\n <\/div>\n <\/div>\n\n <div class=\"sentence-text\">\n Listen to the English meaning, then listen to the Spanish sentence twice, and repeat it.\n <\/div>\n <div id=\"word-box\" class=\"word-box\"><\/div>\n <\/div>\n\n <div class=\"chat-container\">\n <div class=\"chat-header\">\n <h2 id=\"section-title\">Office routines<\/h2>\n <div class=\"loader\" id=\"synthesis-loader\"><\/div>\n <\/div>\n <div class=\"chat-messages\" id=\"chat-messages\"><\/div>\n <div class=\"chat-input\">\n <div class=\"voice-selection\">\n <label for=\"spanish-voice-select\">Choose Spanish Voice:<\/label>\n <select id=\"spanish-voice-select\" aria-label=\"Select Spanish Voice\">\n <option value=\"\">Loading Spanish voices…<\/option>\n <\/select>\n <\/div>\n <button id=\"start-btn\" class=\"send-button\" aria-label=\"Start Lesson\">Start<\/button>\n <button id=\"stop-btn\" class=\"stop-button\" aria-label=\"Stop Lesson\">Stop<\/button>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n\n <div class=\"menu\" id=\"bottom-menu\">\n <a href=\"#\" class=\"menu-link active\" data-section=\"office\">Office routines<\/a>\n <a href=\"#\" class=\"menu-link\" data-section=\"meeting\">Meetings<\/a>\n <a href=\"#\" class=\"menu-link\" data-section=\"coworkers\">Talking with coworkers<\/a>\n <a href=\"#\" class=\"menu-link\" data-section=\"tasks\">Work tasks<\/a>\n <a href=\"#\" class=\"menu-link\" data-section=\"emails\">Emails and messages<\/a>\n <a href=\"#\" class=\"menu-link\" data-section=\"schedule\">Work schedule<\/a>\n <a href=\"#\" class=\"menu-link\" data-section=\"phone\">Phone at work<\/a>\n <a href=\"#\" class=\"menu-link\" data-section=\"presentation\">Presentation basics<\/a>\n <\/div>\n\n <script>\n const sectionData = {\n office: {\n title: \"Office routines\",\n intro: \"Today we will practice Spanish office routines.\",\n lessons: [\n { spanish: \"Llego a oficina temprano.\", english: \"I arrive at the office early.\", keywords: [\"llego\", \"oficina\", \"temprano\"] },\n { spanish: \"Enciendo mi computadora ahora.\", english: \"I turn on my computer now.\", keywords: [\"enciendo\", \"computadora\", \"ahora\"] },\n { spanish: \"Reviso documentos cada ma\u00f1ana.\", english: \"I review documents every morning.\", keywords: [\"reviso\", \"documentos\", \"ma\u00f1ana\", \"manana\"] },\n { spanish: \"Trabajo en mi escritorio.\", english: \"I work at my desk.\", keywords: [\"trabajo\", \"escritorio\"] },\n { spanish: \"Organizo mis archivos hoy.\", english: \"I organize my files today.\", keywords: [\"organizo\", \"archivos\", \"hoy\"] }\n ]\n },\n meeting: {\n title: \"Meetings\",\n intro: \"Today we will practice Spanish meeting phrases.\",\n lessons: [\n { spanish: \"Tengo una reuni\u00f3n hoy.\", english: \"I have a meeting today.\", keywords: [\"tengo\", \"reuni\u00f3n\", \"reunion\", \"hoy\"] },\n { spanish: \"Empieza la reuni\u00f3n ahora.\", english: \"The meeting starts now.\", keywords: [\"empieza\", \"reuni\u00f3n\", \"reunion\", \"ahora\"] },\n { spanish: \"Escucho las ideas todos.\", english: \"I listen to everyone's ideas.\", keywords: [\"escucho\", \"ideas\", \"todos\"] },\n { spanish: \"Comparto mi opini\u00f3n clara.\", english: \"I share my clear opinion.\", keywords: [\"comparto\", \"opini\u00f3n\", \"opinion\", \"clara\"] },\n { spanish: \"Terminamos la reuni\u00f3n pronto.\", english: \"We finish the meeting soon.\", keywords: [\"terminamos\", \"reuni\u00f3n\", \"reunion\", \"pronto\"] }\n ]\n },\n coworkers: {\n title: \"Talking with coworkers\",\n intro: \"Today we will practice Spanish with coworkers.\",\n lessons: [\n { spanish: \"Hablo con mi compa\u00f1ero.\", english: \"I talk with my coworker.\", keywords: [\"hablo\", \"compa\u00f1ero\", \"companero\"] },\n { spanish: \"Trabajamos muy bien juntos.\", english: \"We work very well together.\", keywords: [\"trabajamos\", \"bien\", \"juntos\"] },\n { spanish: \"Necesito su ayuda hoy.\", english: \"I need your help today.\", keywords: [\"necesito\", \"ayuda\", \"hoy\"] },\n { spanish: \"Gracias por su apoyo.\", english: \"Thank you for your support.\", keywords: [\"gracias\", \"apoyo\"] },\n { spanish: \"Comentamos el proyecto juntos.\", english: \"We discuss the project together.\", keywords: [\"comentamos\", \"proyecto\", \"juntos\"] }\n ]\n },\n tasks: {\n title: \"Work tasks\",\n intro: \"Today we will practice Spanish work tasks.\",\n lessons: [\n { spanish: \"Termino este informe hoy.\", english: \"I finish this report today.\", keywords: [\"termino\", \"informe\", \"hoy\"] },\n { spanish: \"Preparo los datos ahora.\", english: \"I prepare the data now.\", keywords: [\"preparo\", \"datos\", \"ahora\"] },\n { spanish: \"Escribo un reporte corto.\", english: \"I write a short report.\", keywords: [\"escribo\", \"reporte\", \"corto\"] },\n { spanish: \"Reviso mi trabajo final.\", english: \"I review my final work.\", keywords: [\"reviso\", \"trabajo\", \"final\"] },\n { spanish: \"Entrego la tarea ma\u00f1ana.\", english: \"I submit the task tomorrow.\", keywords: [\"entrego\", \"tarea\", \"ma\u00f1ana\", \"manana\"] }\n ]\n },\n emails: {\n title: \"Emails and messages\",\n intro: \"Today we will practice Spanish emails and messages.\",\n lessons: [\n { spanish: \"Escribo un correo formal.\", english: \"I write a formal email.\", keywords: [\"escribo\", \"correo\", \"formal\"] },\n { spanish: \"Env\u00edo el mensaje ahora.\", english: \"I send the message now.\", keywords: [\"env\u00edo\", \"envio\", \"mensaje\", \"ahora\"] },\n { spanish: \"Leo su correo hoy.\", english: \"I read your email today.\", keywords: [\"leo\", \"correo\", \"hoy\"] },\n { spanish: \"Respondo el mensaje r\u00e1pido.\", english: \"I reply to the message quickly.\", keywords: [\"respondo\", \"mensaje\", \"r\u00e1pido\", \"rapido\"] },\n { spanish: \"Adjunto el archivo correcto.\", english: \"I attach the correct file.\", keywords: [\"adjunto\", \"archivo\", \"correcto\"] }\n ]\n },\n schedule: {\n title: \"Work schedule\",\n intro: \"Today we will practice Spanish work schedule phrases.\",\n lessons: [\n { spanish: \"Trabajo de lunes viernes.\", english: \"I work from Monday to Friday.\", keywords: [\"trabajo\", \"lunes\", \"viernes\"] },\n { spanish: \"Empiezo a las ocho.\", english: \"I start at eight.\", keywords: [\"empiezo\", \"ocho\"] },\n { spanish: \"Termino a las cinco.\", english: \"I finish at five.\", keywords: [\"termino\", \"cinco\"] },\n { spanish: \"Tengo descanso al mediod\u00eda.\", english: \"I have a break at noon.\", keywords: [\"tengo\", \"descanso\", \"mediod\u00eda\", \"mediodia\"] },\n { spanish: \"Mi horario cambia ma\u00f1ana.\", english: \"My schedule changes tomorrow.\", keywords: [\"horario\", \"cambia\", \"ma\u00f1ana\", \"manana\"] }\n ]\n },\n phone: {\n title: \"Phone at work\",\n intro: \"Today we will practice Spanish phone phrases at work.\",\n lessons: [\n { spanish: \"Contesto la llamada ahora.\", english: \"I answer the call now.\", keywords: [\"contesto\", \"llamada\", \"ahora\"] },\n { spanish: \"Hablo por tel\u00e9fono aqu\u00ed.\", english: \"I speak on the phone here.\", keywords: [\"hablo\", \"tel\u00e9fono\", \"telefono\", \"aqu\u00ed\", \"aqui\"] },\n { spanish: \"Tomo un mensaje breve.\", english: \"I take a short message.\", keywords: [\"tomo\", \"mensaje\", \"breve\"] },\n { spanish: \"Llamo al cliente luego.\", english: \"I call the client later.\", keywords: [\"llamo\", \"cliente\", \"luego\"] },\n { spanish: \"Repita su n\u00famero despacio.\", english: \"Repeat your number slowly.\", keywords: [\"repita\", \"n\u00famero\", \"numero\", \"despacio\"] }\n ]\n },\n presentation: {\n title: \"Presentation basics\",\n intro: \"Today we will practice Spanish presentation basics.\",\n lessons: [\n { spanish: \"Presento mi idea hoy.\", english: \"I present my idea today.\", keywords: [\"presento\", \"idea\", \"hoy\"] },\n { spanish: \"Explico el punto principal.\", english: \"I explain the main point.\", keywords: [\"explico\", \"punto\", \"principal\"] },\n { spanish: \"Muestro esta gr\u00e1fica aqu\u00ed.\", english: \"I show this chart here.\", keywords: [\"muestro\", \"gr\u00e1fica\", \"grafica\", \"aqu\u00ed\", \"aqui\"] },\n { spanish: \"Respondo preguntas al final.\", english: \"I answer questions at the end.\", keywords: [\"respondo\", \"preguntas\", \"final\"] },\n { spanish: \"Gracias por escuchar todos.\", english: \"Thank you all for listening.\", keywords: [\"gracias\", \"escuchar\", \"todos\"] }\n ]\n }\n };\n\n let currentSection = \"office\";\n let lessons = sectionData[currentSection].lessons;\n\n const positiveFeedback = [\n \"Very good. You said it clearly.\",\n \"Excellent. Keep practicing.\",\n \"Great job. Your Spanish was clear.\",\n \"Well done. Keep going.\",\n \"Excellent work. Nice speaking.\"\n ];\n\n const constructiveFeedback = [\n \"Try again and repeat the Spanish sentence clearly.\",\n \"Good try. Please repeat the sentence one more time.\",\n \"Listen carefully and say the sentence again.\",\n \"Try to say all the Spanish words clearly.\",\n \"Please repeat after the model sentence.\"\n ];\n\n const pronunciationFeedback = [\n \"Good effort. Say it a little more clearly.\",\n \"Nice try. Focus on the key Spanish words.\",\n \"Good. Speak a little more slowly.\",\n \"Your answer is understandable. Try again with clearer pronunciation.\",\n \"Well done. Keep your speaking steady.\"\n ];\n\n const stopKeywords = [\"goodbye\", \"bye\", \"stop\", \"end lesson\", \"adi\u00f3s\", \"adios\"];\n\n let currentLessonIndex = 0;\n let isLessonActive = false;\n let speechRecognitionActive = false;\n let pendingNextQuestionTimeout = null;\n let retryCount = 0;\n const maxRetriesPerQuestion = 2;\n\n const speechSynthesisSupported = 'speechSynthesis' in window;\n const SpeechRecognitionClass = window.SpeechRecognition || window.webkitSpeechRecognition;\n const speechRecognitionSupported = !!SpeechRecognitionClass;\n\n let voices = [];\n let spanishVoices = [];\n let englishVoices = [];\n let selectedSpanishVoice = null;\n let selectedEnglishVoice = null;\n\n let recognition = null;\n let micAccessGranted = false;\n let currentListeningItem = null;\n\n let currentEmotion = 'neutral';\n let isFaceTalking = false;\n let faceTalkTimer = null;\n let faceBubbleTimer = null;\n let blinkTimer = null;\n let saccadeTimer = null;\n let breatheRAF = null;\n\n const faceContainer = document.getElementById('face-container');\n const faceShell = document.getElementById('face-shell');\n const mouth = document.getElementById('mouth');\n const mouthInner = document.getElementById('mouth-inner');\n const teeth = document.getElementById('teeth');\n const leftEyeWhite = document.getElementById('left-eye-white');\n const rightEyeWhite = document.getElementById('right-eye-white');\n const leftLid = document.getElementById('left-eye-lid');\n const rightLid = document.getElementById('right-eye-lid');\n const leftPupil = document.getElementById('left-pupil');\n const rightPupil = document.getElementById('right-pupil');\n const leftSparkle = document.getElementById('left-sparkle');\n const rightSparkle = document.getElementById('right-sparkle');\n const leftEyebrow = document.getElementById('left-eyebrow');\n const rightEyebrow = document.getElementById('right-eyebrow');\n const leftBlush = document.getElementById('left-blush');\n const rightBlush = document.getElementById('right-blush');\n const leftTear = document.getElementById('left-tear');\n const rightTear = document.getElementById('right-tear');\n const angerVeins = document.getElementById('anger-veins');\n const faceSpeechBubble = document.getElementById('face-speech-bubble');\n const faceSpeechText = document.getElementById('face-speech-text');\n\n const emotions = {\n neutral: {\n mouth: 'M 100 220 Q 150 232 200 220',\n leftEyebrow: 'M 60 80 Q 90 75 120 80',\n rightEyebrow: 'M 180 80 Q 210 75 240 80',\n eyeRY: 24,\n blush: 0,\n tears: 0,\n anger: 0,\n teeth: 0,\n mouthInnerOpacity: 0,\n mouthInnerRx: 0,\n mouthInnerRy: 0\n },\n happy: {\n mouth: 'M 92 212 Q 150 278 208 212',\n leftEyebrow: 'M 60 75 Q 90 66 120 75',\n rightEyebrow: 'M 180 75 Q 210 66 240 75',\n eyeRY: 17,\n blush: 0.48,\n tears: 0,\n anger: 0,\n teeth: 0.92,\n mouthInnerOpacity: 0.25,\n mouthInnerRx: 24,\n mouthInnerRy: 8\n },\n sad: {\n mouth: 'M 112 240 Q 150 203 188 240',\n leftEyebrow: 'M 68 72 Q 90 88 120 76',\n rightEyebrow: 'M 180 76 Q 210 88 232 72',\n eyeRY: 15,\n blush: 0,\n tears: 0.78,\n anger: 0,\n teeth: 0,\n mouthInnerOpacity: 0,\n mouthInnerRx: 0,\n mouthInnerRy: 0\n },\n confused: {\n mouth: 'M 110 224 Q 140 230 160 221 Q 182 236 190 226',\n leftEyebrow: 'M 60 86 Q 90 68 120 80',\n rightEyebrow: 'M 180 70 Q 210 86 240 76',\n eyeRY: 22,\n blush: 0,\n tears: 0,\n anger: 0,\n teeth: 0,\n mouthInnerOpacity: 0,\n mouthInnerRx: 0,\n mouthInnerRy: 0\n }\n };\n\n function setFaceEmotion(emotion) {\n const preset = emotions[emotion] || emotions.neutral;\n currentEmotion = emotion;\n mouth.setAttribute('d', preset.mouth);\n leftEyebrow.setAttribute('d', preset.leftEyebrow);\n rightEyebrow.setAttribute('d', preset.rightEyebrow);\n leftEyeWhite.setAttribute('ry', preset.eyeRY);\n rightEyeWhite.setAttribute('ry', preset.eyeRY);\n leftBlush.setAttribute('opacity', preset.blush);\n rightBlush.setAttribute('opacity', preset.blush);\n leftTear.setAttribute('fill', `rgba(100,200,255,${preset.tears})`);\n rightTear.setAttribute('fill', `rgba(100,200,255,${preset.tears})`);\n angerVeins.setAttribute('opacity', preset.anger);\n teeth.setAttribute('opacity', preset.teeth);\n mouthInner.setAttribute('opacity', preset.mouthInnerOpacity);\n mouthInner.setAttribute('rx', preset.mouthInnerRx);\n mouthInner.setAttribute('ry', preset.mouthInnerRy);\n }\n\n function blinkFace(duration = 110) {\n const currentL = parseFloat(leftEyeWhite.getAttribute('ry'));\n const currentR = parseFloat(rightEyeWhite.getAttribute('ry'));\n leftLid.setAttribute('ry', currentL + 1);\n rightLid.setAttribute('ry', currentR + 1);\n setTimeout(() => {\n leftLid.setAttribute('ry', 0);\n rightLid.setAttribute('ry', 0);\n }, duration);\n }\n\n function scheduleBlink() {\n clearTimeout(blinkTimer);\n const next = 1500 + Math.random() * 3500;\n blinkTimer = setTimeout(() => {\n blinkFace(90 + Math.random() * 80);\n if (Math.random() < 0.22) setTimeout(() => blinkFace(70), 120);\n scheduleBlink();\n }, next);\n }\n\n function idleSaccade() {\n if (isFaceTalking) return;\n const dx = (Math.random() * 2 - 1) * 4.5;\n const dy = (Math.random() * 2 - 1) * 3.2;\n leftPupil.setAttribute('cx', 90 + dx);\n leftPupil.setAttribute('cy', 110 + dy);\n rightPupil.setAttribute('cx', 210 + dx);\n rightPupil.setAttribute('cy', 110 + dy);\n leftSparkle.setAttribute('cx', 96 + dx * 0.6);\n leftSparkle.setAttribute('cy', 104 + dy * 0.6);\n rightSparkle.setAttribute('cx', 216 + dx * 0.6);\n rightSparkle.setAttribute('cy', 104 + dy * 0.6);\n }\n\n function scheduleSaccade() {\n clearTimeout(saccadeTimer);\n const next = 900 + Math.random() * 1800;\n saccadeTimer = setTimeout(() => {\n idleSaccade();\n scheduleSaccade();\n }, next);\n }\n\n function startFaceBreathing() {\n let t0 = performance.now();\n function frame(now) {\n const t = (now - t0) \/ 1000;\n const breathe = Math.sin(t * 1.8) * 1.8;\n const sway = Math.sin(t * 0.9) * 1.4;\n const tilt = Math.sin(t * 0.75) * 0.8;\n if (!isFaceTalking) {\n faceShell.setAttribute(\n 'transform',\n `translate(${sway.toFixed(2)}, ${breathe.toFixed(2)}) rotate(${tilt.toFixed(2)} 150 150)`\n );\n }\n breatheRAF = requestAnimationFrame(frame);\n }\n cancelAnimationFrame(breatheRAF);\n breatheRAF = requestAnimationFrame(frame);\n }\n\n function showFaceBubble(text, duration) {\n faceSpeechText.textContent = text;\n faceSpeechBubble.classList.add('visible');\n clearTimeout(faceBubbleTimer);\n faceBubbleTimer = setTimeout(() => {\n faceSpeechBubble.classList.remove('visible');\n }, duration + 600);\n }\n\n function stopFaceTalking() {\n isFaceTalking = false;\n clearInterval(faceTalkTimer);\n faceTalkTimer = null;\n setFaceEmotion(currentEmotion);\n }\n\n function talkingFrame(emotion) {\n const shapes = {\n neutral: [\n { d: 'M 102 220 Q 150 240 198 220', rx: 14, ry: 7, teeth: 0.1, inner: 0.25 },\n { d: 'M 96 214 Q 150 262 204 214', rx: 22, ry: 11, teeth: 0.28, inner: 0.45 },\n { d: 'M 108 224 Q 150 236 192 224', rx: 12, ry: 5, teeth: 0, inner: 0.18 }\n ],\n happy: [\n { d: 'M 92 212 Q 150 280 208 212', rx: 24, ry: 10, teeth: 0.9, inner: 0.35 },\n { d: 'M 96 216 Q 150 266 204 216', rx: 18, ry: 8, teeth: 0.75, inner: 0.28 },\n { d: 'M 88 210 Q 150 286 212 210', rx: 28, ry: 12, teeth: 1.0, inner: 0.4 }\n ],\n sad: [\n { d: 'M 112 238 Q 150 212 188 238', rx: 10, ry: 4, teeth: 0, inner: 0.1 },\n { d: 'M 108 234 Q 150 220 192 234', rx: 12, ry: 5, teeth: 0, inner: 0.14 },\n { d: 'M 114 240 Q 150 208 186 240', rx: 8, ry: 4, teeth: 0, inner: 0.08 }\n ],\n confused: [\n { d: 'M 110 224 Q 140 230 160 221 Q 182 236 190 226', rx: 10, ry: 4, teeth: 0, inner: 0.1 },\n { d: 'M 106 222 Q 140 236 162 220 Q 184 242 194 226', rx: 14, ry: 6, teeth: 0, inner: 0.18 },\n { d: 'M 112 225 Q 141 228 161 222 Q 181 234 189 225', rx: 9, ry: 4, teeth: 0, inner: 0.08 }\n ]\n };\n const list = shapes[emotion] || shapes.neutral;\n const chosen = list[Math.floor(Math.random() * list.length)];\n mouth.setAttribute('d', chosen.d);\n mouthInner.setAttribute('opacity', chosen.inner);\n mouthInner.setAttribute('rx', chosen.rx);\n mouthInner.setAttribute('ry', chosen.ry);\n teeth.setAttribute('opacity', chosen.teeth);\n\n const bobX = (Math.random() * 2 - 1) * 1.5;\n const bobY = -1.5 + Math.random() * 2.8;\n const tilt = (Math.random() * 2 - 1) * 2.2;\n faceShell.setAttribute(\n 'transform',\n `translate(${bobX.toFixed(2)}, ${bobY.toFixed(2)}) rotate(${tilt.toFixed(2)} 150 150)`\n );\n }\n\n function faceSpeak(text, emotion = \"neutral\", durationHint = null) {\n const clean = (text || \"\").trim();\n if (!clean) return;\n clearInterval(faceTalkTimer);\n isFaceTalking = true;\n setFaceEmotion(emotion);\n const duration = durationHint || Math.max(1600, clean.length * 70);\n showFaceBubble(clean, duration);\n faceTalkTimer = setInterval(() => talkingFrame(emotion), 120);\n setTimeout(() => stopFaceTalking(), duration);\n }\n\n document.addEventListener('mousemove', (e) => {\n if (isFaceTalking) return;\n const svg = document.getElementById('face-svg');\n const rect = svg.getBoundingClientRect();\n const centerX = rect.left + rect.width \/ 2;\n const centerY = rect.top + rect.height \/ 2;\n const dx = (e.clientX - centerX) \/ 45;\n const dy = (e.clientY - centerY) \/ 45;\n const moveX = Math.max(-5, Math.min(5, dx));\n const moveY = Math.max(-4, Math.min(4, dy));\n leftPupil.setAttribute('cx', 90 + moveX);\n leftPupil.setAttribute('cy', 110 + moveY);\n rightPupil.setAttribute('cx', 210 + moveX);\n rightPupil.setAttribute('cy', 110 + moveY);\n leftSparkle.setAttribute('cx', 96 + moveX * 0.6);\n leftSparkle.setAttribute('cy', 104 + moveY * 0.6);\n rightSparkle.setAttribute('cx', 216 + moveX * 0.6);\n rightSparkle.setAttribute('cy', 104 + moveY * 0.6);\n faceContainer.style.transform = `translate(${(moveX * 0.25).toFixed(2)}px, ${(moveY * 0.2).toFixed(2)}px)`;\n });\n\n function initialize() {\n loadVoices();\n setFaceEmotion('neutral');\n scheduleBlink();\n scheduleSaccade();\n startFaceBreathing();\n bindSectionMenus();\n\n if (!speechSynthesisSupported) appendMessage(\"Sorry, your browser does not support speech synthesis.\", \"bot\");\n if (!speechRecognitionSupported) appendMessage(\"Sorry, your browser does not support speech recognition.\", \"bot\");\n if (speechRecognitionSupported) createRecognitionInstance();\n\n updateSectionUI();\n appendMessage(\"Click Start to begin the Spanish lesson.\", \"bot\");\n\n document.getElementById('start-btn').onclick = async function() {\n if (isLessonActive) return;\n if (!speechSynthesisSupported || !speechRecognitionSupported) return;\n\n clearChat();\n clearWordBox();\n stopAllAudioAndRecognition();\n clearPendingTimeout();\n\n const micOk = await requestMicrophoneOnce();\n if (!micOk) {\n appendMessage(\"Microphone access is required for speaking practice.\", \"bot\");\n return;\n }\n\n isLessonActive = true;\n currentLessonIndex = 0;\n retryCount = 0;\n\n const greetingText = sectionData[currentSection].intro;\n appendMessage(greetingText, 'bot');\n faceSpeak(\"Welcome.\", \"happy\");\n showSynthesisLoader(true);\n\n speakEnglish(greetingText).then(() => {\n showSynthesisLoader(false);\n startLesson();\n });\n };\n\n document.getElementById('stop-btn').onclick = function() {\n endLesson(true);\n };\n }\n\n function bindSectionMenus() {\n document.querySelectorAll('.menu-link').forEach(link => {\n link.addEventListener('click', function(e) {\n e.preventDefault();\n const section = this.dataset.section;\n switchSection(section);\n });\n });\n }\n\n function switchSection(section) {\n if (!sectionData[section]) return;\n stopAllAudioAndRecognition();\n isLessonActive = false;\n currentListeningItem = null;\n currentSection = section;\n lessons = sectionData[currentSection].lessons;\n currentLessonIndex = 0;\n retryCount = 0;\n clearChat();\n clearWordBox();\n updateSectionUI();\n appendMessage(`Section changed to ${sectionData[currentSection].title}. Click Start to begin.`, 'bot');\n }\n\n function updateSectionUI() {\n document.getElementById('section-title').textContent = sectionData[currentSection].title;\n document.querySelectorAll('.menu-link').forEach(link => {\n link.classList.toggle('active', link.dataset.section === currentSection);\n });\n }\n\n async function requestMicrophoneOnce() {\n if (micAccessGranted) return true;\n if (!navigator.mediaDevices || !navigator.mediaDevices.getUserMedia) {\n appendMessage(\"Your browser does not support microphone access.\", \"bot\");\n return false;\n }\n try {\n const stream = await navigator.mediaDevices.getUserMedia({ audio: true });\n stream.getTracks().forEach(track => track.stop());\n micAccessGranted = true;\n return true;\n } catch (error) {\n appendMessage(\"Microphone access was blocked. Please allow microphone access and try again.\", \"bot\");\n faceSpeak(\"Microphone access was blocked.\", \"sad\");\n return false;\n }\n }\n\n function createRecognitionInstance() {\n recognition = new SpeechRecognitionClass();\n recognition.lang = 'es-ES';\n recognition.interimResults = false;\n recognition.continuous = false;\n recognition.maxAlternatives = 1;\n\n recognition.onresult = function(event) {\n if (!isLessonActive || !speechRecognitionActive || !currentListeningItem) return;\n const transcript = event.results[0][0].transcript.trim();\n const formattedInput = formatSentence(transcript);\n\n speechRecognitionActive = false;\n showRecognitionLoader(false);\n appendMessage(formattedInput, 'user');\n\n if (checkStopKeywords(formattedInput.toLowerCase())) {\n endLesson(true);\n return;\n }\n\n const feedbackType = analyzeResponse(formattedInput, currentListeningItem.keywords);\n let feedbackMessage = \"\";\n let faceEmotion = \"neutral\";\n\n if (feedbackType === \"positive\") {\n feedbackMessage = pickRandom(positiveFeedback);\n faceEmotion = \"happy\";\n } else if (feedbackType === \"pronunciation\") {\n feedbackMessage = pickRandom(pronunciationFeedback);\n faceEmotion = \"neutral\";\n } else {\n feedbackMessage = pickRandom(constructiveFeedback);\n faceEmotion = \"confused\";\n }\n\n appendMessage(feedbackMessage, 'bot');\n faceSpeak(feedbackMessage, faceEmotion);\n showSynthesisLoader(true);\n\n speakEnglish(feedbackMessage).then(() => {\n showSynthesisLoader(false);\n if (!isLessonActive) return;\n currentLessonIndex++;\n clearPendingTimeout();\n pendingNextQuestionTimeout = setTimeout(() => startLesson(), 1600);\n });\n };\n\n recognition.onspeechend = function() {\n if (speechRecognitionActive && recognition) {\n try { recognition.stop(); } catch (e) {}\n }\n };\n\n recognition.onerror = function(event) {\n speechRecognitionActive = false;\n showRecognitionLoader(false);\n if (!isLessonActive || !currentListeningItem) return;\n\n let errorMessage = \"\";\n switch (event.error) {\n case \"not-allowed\":\n micAccessGranted = false;\n errorMessage = \"Microphone access was blocked. Please allow microphone access and try again.\";\n appendMessage(errorMessage, 'bot');\n faceSpeak(errorMessage, \"sad\");\n break;\n\n case \"no-speech\":\n retryCount++;\n if (retryCount <= maxRetriesPerQuestion) {\n errorMessage = \"I did not hear you. Please repeat the Spanish sentence again.\";\n appendMessage(errorMessage, 'bot');\n faceSpeak(\"Please repeat.\", \"confused\");\n showSynthesisLoader(true);\n speakSpanish(\"Por favor, repite.\").then(() => {\n showSynthesisLoader(false);\n listenUserResponse(currentListeningItem);\n });\n } else {\n errorMessage = \"Let's go to the next sentence.\";\n appendMessage(errorMessage, 'bot');\n faceSpeak(errorMessage, \"neutral\");\n showSynthesisLoader(true);\n speakEnglish(errorMessage).then(() => {\n showSynthesisLoader(false);\n currentLessonIndex++;\n startLesson();\n });\n }\n break;\n\n default:\n appendMessage(\"There was a speech recognition error. Please try again.\", \"bot\");\n faceSpeak(\"Please try again.\", \"sad\");\n showSynthesisLoader(true);\n speakSpanish(\"Por favor, intenta otra vez.\").then(() => {\n showSynthesisLoader(false);\n listenUserResponse(currentListeningItem);\n });\n break;\n }\n };\n\n recognition.onend = function() {\n speechRecognitionActive = false;\n showRecognitionLoader(false);\n };\n }\n\n function loadVoices() {\n const fillVoices = () => {\n voices = window.speechSynthesis.getVoices();\n spanishVoices = voices.filter(v =>\n \/^es(-|_)\/i.test(v.lang) || \/spanish|espa\u00f1ol\/i.test(v.name)\n );\n englishVoices = voices.filter(v =>\n \/^en(-|_)\/i.test(v.lang) || \/english\/i.test(v.name)\n );\n\n spanishVoices.sort((a, b) => getSpanishVoicePriority(a) - getSpanishVoicePriority(b));\n englishVoices.sort((a, b) => getEnglishVoicePriority(a) - getEnglishVoicePriority(b));\n\n selectedSpanishVoice = spanishVoices[0] || null;\n selectedEnglishVoice = englishVoices[0] || null;\n populateSpanishVoiceList();\n };\n\n fillVoices();\n if (typeof speechSynthesis !== \"undefined\") speechSynthesis.onvoiceschanged = fillVoices;\n }\n\n function getSpanishVoicePriority(voice) {\n const name = voice.name.toLowerCase();\n if (name.includes(\"google\") && (name.includes(\"espa\u00f1ol\") || name.includes(\"spanish\"))) return 1;\n if (name.includes(\"microsoft\") && (name.includes(\"espa\u00f1ol\") || name.includes(\"spanish\"))) return 2;\n if (name.includes(\"spanish\") || name.includes(\"espa\u00f1ol\")) return 3;\n return 10;\n }\n\n function getEnglishVoicePriority(voice) {\n const name = voice.name.toLowerCase();\n if (name.includes(\"google us english\")) return 1;\n if (name.includes(\"google uk english\")) return 2;\n if (name.includes(\"microsoft\") && name.includes(\"english\")) return 3;\n if (name.includes(\"english\")) return 4;\n return 10;\n }\n\n function populateSpanishVoiceList() {\n const voiceSelect = document.getElementById('spanish-voice-select');\n voiceSelect.innerHTML = '';\n\n if (!spanishVoices.length) {\n const option = document.createElement('option');\n option.value = \"\";\n option.textContent = \"No Spanish voices available\";\n voiceSelect.appendChild(option);\n voiceSelect.disabled = true;\n selectedSpanishVoice = null;\n return;\n }\n\n spanishVoices.forEach((voice, index) => {\n const option = document.createElement('option');\n option.value = String(index);\n option.textContent = `${voice.name} (${voice.lang})`;\n voiceSelect.appendChild(option);\n });\n\n selectedSpanishVoice = spanishVoices[0];\n voiceSelect.value = \"0\";\n voiceSelect.disabled = false;\n\n voiceSelect.onchange = () => {\n const index = parseInt(voiceSelect.value, 10);\n selectedSpanishVoice = spanishVoices[index] || spanishVoices[0];\n };\n }\n\n function startLesson() {\n if (!isLessonActive) return;\n if (currentLessonIndex >= lessons.length) {\n endLesson(false);\n return;\n }\n retryCount = 0;\n askCurrentSentence();\n }\n\n function askCurrentSentence() {\n if (!isLessonActive) return;\n const item = lessons[currentLessonIndex];\n const sentenceNumber = currentLessonIndex + 1;\n const displayText = `Sentence ${sentenceNumber}.\\nEnglish: ${item.english}\\nSpanish: ${item.spanish}`;\n appendMessage(displayText, 'bot');\n\n addSentenceToBox(`English: ${item.english}`);\n addSentenceToBox(`Spanish: ${item.spanish}`);\n addSentenceToBox(`--------------------`);\n\n faceSpeak(item.spanish, \"neutral\");\n showSynthesisLoader(true);\n\n speakEnglish(`Sentence ${sentenceNumber}. ${item.english}`)\n .then(() => speakSpanish(item.spanish))\n .then(() => speakSpanish(item.spanish))\n .then(() => {\n showSynthesisLoader(false);\n listenUserResponse(item);\n });\n }\n\n function listenUserResponse(item) {\n if (!isLessonActive || !recognition) return;\n stopRecognitionOnly();\n currentListeningItem = item;\n recognition.lang = 'es-ES';\n speechRecognitionActive = true;\n showRecognitionLoader(true);\n appendMessage(\"Listening... Please repeat in Spanish.\", \"bot\");\n faceSpeak(\"Escucha y repite.\", \"neutral\", 1400);\n\n try {\n recognition.start();\n } catch (err) {\n speechRecognitionActive = false;\n showRecognitionLoader(false);\n appendMessage(\"The microphone could not start. Please try again.\", \"bot\");\n faceSpeak(\"Please try again.\", \"sad\");\n }\n }\n\n function analyzeResponse(userInput, keywords) {\n const input = userInput.toLowerCase();\n let matchCount = 0;\n keywords.forEach(keyword => {\n if (input.includes(keyword.toLowerCase())) matchCount++;\n });\n const wordCount = input.split(\/\\s+\/).filter(Boolean).length;\n if (matchCount >= 2 || wordCount >= 4) return \"positive\";\n if (matchCount >= 1) return \"pronunciation\";\n return \"constructive\";\n }\n\n function checkStopKeywords(userInput) {\n const pattern = new RegExp(\"\\\\b(\" + stopKeywords.map(escapeRegex).join(\"|\") + \")\\\\b\", \"i\");\n return pattern.test(userInput);\n }\n\n function formatSentence(text) {\n if (!text) return \"\";\n text = text.trim();\n text = text.charAt(0).toUpperCase() + text.slice(1);\n if (!\/[.?!]$\/.test(text)) text += \".\";\n return text;\n }\n\n function addSentenceToBox(sentence) {\n const wordBox = document.getElementById('word-box');\n const sentenceElement = document.createElement('div');\n sentenceElement.innerText = sentence;\n wordBox.appendChild(sentenceElement);\n wordBox.scrollTop = wordBox.scrollHeight;\n }\n\n function clearWordBox() {\n document.getElementById('word-box').innerHTML = \"\";\n }\n\n function clearChat() {\n document.getElementById('chat-messages').innerHTML = \"\";\n }\n\n function endLesson(userStopped = false) {\n stopAllAudioAndRecognition();\n isLessonActive = false;\n currentListeningItem = null;\n\n const message = userStopped\n ? \"Thank you. Goodbye.\"\n : `Excellent. You finished the ${sectionData[currentSection].title} section. Keep practicing.`;\n\n appendMessage(message, \"bot\");\n faceSpeak(message, userStopped ? \"neutral\" : \"happy\");\n showSynthesisLoader(true);\n\n if (userStopped) {\n speakEnglish(\"Thank you. Goodbye.\")\n .then(() => speakSpanish(\"Adi\u00f3s.\"))\n .then(() => showSynthesisLoader(false));\n } else {\n speakEnglish(message).then(() => showSynthesisLoader(false));\n }\n }\n\n function speakText(text, lang, voiceObj) {\n return new Promise(resolve => {\n if (!speechSynthesisSupported) {\n resolve();\n return;\n }\n window.speechSynthesis.cancel();\n const utterance = new SpeechSynthesisUtterance(text);\n utterance.lang = lang;\n utterance.rate = 0.9;\n utterance.pitch = 1.0;\n if (voiceObj) utterance.voice = voiceObj;\n utterance.onend = () => resolve();\n utterance.onerror = () => resolve();\n window.speechSynthesis.speak(utterance);\n });\n }\n\n function speakEnglish(text) {\n return speakText(text, \"en-US\", selectedEnglishVoice);\n }\n\n function speakSpanish(text) {\n return speakText(text, \"es-ES\", selectedSpanishVoice);\n }\n\n function appendMessage(text, sender) {\n const messageContainer = document.getElementById('chat-messages');\n const messageElement = document.createElement('div');\n messageElement.classList.add('message');\n messageElement.classList.add(sender === 'bot' ? 'bot-message' : 'user-message');\n messageElement.innerText = text;\n messageContainer.appendChild(messageElement);\n messageContainer.scrollTop = messageContainer.scrollHeight;\n }\n\n function showSynthesisLoader(show) {\n const loader = document.getElementById('synthesis-loader');\n loader.style.display = show ? 'inline-block' : 'none';\n loader.style.borderTop = '4px solid #17a2b8';\n }\n\n function showRecognitionLoader(show) {\n const loader = document.getElementById('synthesis-loader');\n loader.style.display = show ? 'inline-block' : 'none';\n loader.style.borderTop = show ? 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