*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--indigo: #4f46e5;--indigo-dark: #4338ca;--violet: #7c3aed;--indigo-light: #eef2ff;--goal-school: #3b82f6;--goal-school-light: #dbeafe;--goal-friends: #10b981;--goal-friends-light: #d1fae5;--goal-career: #4f46e5;--goal-career-light: #eef2ff;--goal-influencer: #7c3aed;--goal-influencer-light: #ede9fe;--success: #10b981;--success-light: #d1fae5;--warning: #f59e0b;--warning-light: #fef3c7;--error: #f43f5e;--error-light: #ffe4e6;--bg: #f8fafc;--surface: #ffffff;--gray-50: #f8fafc;--gray-100: #f1f5f9;--gray-200: #e2e8f0;--gray-300: #cbd5e1;--gray-400: #94a3b8;--gray-500: #64748b;--gray-600: #475569;--gray-700: #334155;--gray-800: #1e293b;--gray-900: #0f172a;--radius: 12px;--radius-sm: 8px;--radius-lg: 16px;--radius-xl: 20px;--shadow-sm: 0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);--shadow: 0 4px 6px -1px rgba(0,0,0,.07), 0 2px 4px -1px rgba(0,0,0,.04);--shadow-md: 0 10px 15px -3px rgba(0,0,0,.08), 0 4px 6px -2px rgba(0,0,0,.04);--shadow-lg: 0 20px 25px -5px rgba(0,0,0,.08), 0 10px 10px -5px rgba(0,0,0,.03)}body{font-family:Inter,Segoe UI,system-ui,-apple-system,sans-serif;background:var(--bg);min-height:100vh;color:var(--gray-800);line-height:1.6;-webkit-font-smoothing:antialiased}a{text-decoration:none;color:inherit}button{cursor:pointer;font-family:inherit}input,textarea{font-family:inherit}.header{background:var(--surface);border-bottom:1px solid var(--gray-200);position:sticky;top:0;z-index:100;box-shadow:var(--shadow-sm)}.header-inner{max-width:1100px;margin:0 auto;padding:0 1.5rem;height:60px;display:flex;align-items:center;justify-content:space-between}.header-logo{display:flex;align-items:center;gap:.5rem;font-size:1.2rem;font-weight:800;color:var(--gray-900);letter-spacing:-.02em}.logo-icon{width:30px;height:30px;background:linear-gradient(135deg,var(--indigo),var(--violet));border-radius:8px;display:flex;align-items:center;justify-content:center;color:#fff}.header-nav{display:flex;align-items:center;gap:.25rem}.header-nav a{font-size:.875rem;font-weight:500;color:var(--gray-500);padding:.4rem .75rem;border-radius:var(--radius-sm);transition:background .15s,color .15s}.header-nav a:hover{background:var(--gray-100);color:var(--gray-800)}.header-nav a.active{background:var(--indigo-light);color:var(--indigo);font-weight:600}.main-content{max-width:1100px;margin:0 auto;padding:2rem 1.5rem}.page-container{max-width:900px;margin:0 auto}.page-header{margin-bottom:2rem}.page-header h1{font-size:1.75rem;font-weight:800;letter-spacing:-.02em;margin-bottom:.375rem}.page-header p{color:var(--gray-500);font-size:.95rem}.home-hero{padding:2.5rem 0 2rem}.home-goal-pill{display:inline-flex;align-items:center;gap:.5rem;padding:.35rem .75rem .35rem .5rem;border-radius:999px;font-size:.8rem;font-weight:600;margin-bottom:1.25rem;cursor:pointer;border:1.5px solid transparent;transition:opacity .15s}.home-goal-pill:hover{opacity:.8}.goal-pill-dot{width:8px;height:8px;border-radius:50%}.goal-pill-change{font-size:.72rem;font-weight:500;opacity:.65;margin-left:.15rem}.home-title{font-size:2.25rem;font-weight:800;letter-spacing:-.03em;margin-bottom:.625rem;color:var(--gray-900);line-height:1.2}.home-title-gradient{background:linear-gradient(135deg,var(--indigo),var(--violet));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.home-subtitle{font-size:1rem;color:var(--gray-500);max-width:520px}.mode-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:1.25rem}.mode-card{background:var(--surface);border-radius:var(--radius-lg);padding:1.5rem;box-shadow:var(--shadow);transition:transform .18s,box-shadow .18s;display:flex;flex-direction:column;gap:.625rem;border:1px solid var(--gray-200);position:relative;overflow:hidden}.mode-card:before{content:"";position:absolute;top:0;left:0;right:0;height:3px;border-radius:var(--radius-lg) var(--radius-lg) 0 0}.mode-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}.card-blue:before{background:var(--goal-school)}.card-green:before{background:var(--goal-friends)}.card-purple:before{background:var(--goal-influencer)}.card-orange:before{background:var(--warning)}.card-indigo:before{background:var(--indigo)}.mode-card-icon{width:40px;height:40px;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;margin-bottom:.25rem}.icon-blue{background:var(--goal-school-light);color:var(--goal-school)}.icon-green{background:var(--goal-friends-light);color:var(--goal-friends)}.icon-purple{background:var(--goal-influencer-light);color:var(--goal-influencer)}.icon-orange{background:#fef3c7;color:var(--warning)}.icon-indigo{background:var(--indigo-light);color:var(--indigo)}.mode-title{font-size:1rem;font-weight:700;color:var(--gray-900)}.mode-desc{font-size:.85rem;color:var(--gray-500);flex:1;line-height:1.5}.mode-cta{display:flex;align-items:center;gap:.25rem;font-size:.82rem;font-weight:600;color:var(--indigo);margin-top:.25rem}.onboarding-page{min-height:calc(100vh - 60px);display:flex;flex-direction:column;align-items:center;justify-content:center;padding:3rem 1.5rem}.onboarding-header{text-align:center;margin-bottom:3rem}.onboarding-badge{display:inline-flex;align-items:center;gap:.375rem;background:var(--indigo-light);color:var(--indigo);font-size:.8rem;font-weight:600;padding:.3rem .75rem;border-radius:999px;margin-bottom:1.25rem}.onboarding-title{font-size:2rem;font-weight:800;letter-spacing:-.03em;color:var(--gray-900);margin-bottom:.75rem}.onboarding-subtitle{font-size:1rem;color:var(--gray-500);max-width:460px;margin:0 auto}.goal-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1.25rem;max-width:680px;width:100%}.goal-card{background:var(--surface);border:2px solid var(--gray-200);border-radius:var(--radius-lg);padding:1.75rem;cursor:pointer;transition:border-color .15s,box-shadow .15s,transform .15s;display:flex;flex-direction:column;gap:.75rem}.goal-card:hover{border-color:var(--gray-300);box-shadow:var(--shadow-md);transform:translateY(-2px)}.goal-card-selected{border-width:2px;box-shadow:0 0 0 3px #4f46e51f}.goal-card-icon{width:48px;height:48px;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center}.goal-card-title{font-size:1rem;font-weight:700;color:var(--gray-900)}.goal-card-description{font-size:.85rem;color:var(--gray-500);line-height:1.5}.goal-card-benefits{display:flex;flex-direction:column;gap:.3rem;margin-top:.25rem}.goal-benefit{display:flex;align-items:center;gap:.4rem;font-size:.78rem;color:var(--gray-600);font-weight:500}.onboarding-cta{margin-top:2.5rem;text-align:center}.practice-page{max-width:680px;margin:0 auto;display:flex;flex-direction:column;gap:1.5rem}.practice-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:.25rem}.practice-progress-bar-wrap{height:6px;background:var(--gray-200);border-radius:999px;overflow:hidden;margin-bottom:1.5rem}.practice-progress-bar{height:100%;background:linear-gradient(90deg,var(--indigo),var(--violet));border-radius:999px;transition:width .4s ease}.practice-counter{font-size:.8rem;font-weight:600;color:var(--gray-400)}.question-card{background:var(--surface);border-radius:var(--radius-lg);padding:2rem;box-shadow:var(--shadow);border:1px solid var(--gray-200);animation:fadeSlideUp .3s ease}@keyframes fadeSlideUp{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}.question-type-badge{display:inline-flex;align-items:center;gap:.35rem;font-size:.72rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;padding:.25rem .6rem;border-radius:999px;margin-bottom:1.25rem;background:var(--indigo-light);color:var(--indigo)}.question-context{font-size:.85rem;color:var(--gray-500);background:var(--gray-50);border-left:3px solid var(--gray-300);padding:.75rem 1rem;border-radius:0 var(--radius-sm) var(--radius-sm) 0;margin-bottom:1.25rem;font-style:italic}.question-text{font-size:1.2rem;font-weight:700;color:var(--gray-900);line-height:1.4;margin-bottom:.5rem}.question-hint{font-size:.82rem;color:var(--gray-400);margin-top:.75rem}.answer-input-wrap{background:var(--surface);border-radius:var(--radius-lg);padding:1.5rem;box-shadow:var(--shadow);border:1px solid var(--gray-200);display:flex;flex-direction:column;gap:1rem}.mc-options{display:flex;flex-direction:column;gap:.625rem}.mc-option{background:var(--gray-50);border:1.5px solid var(--gray-200);border-radius:var(--radius-sm);padding:.85rem 1.1rem;text-align:left;font-size:.95rem;font-weight:500;color:var(--gray-700);transition:all .15s;cursor:pointer}.mc-option:hover:not(:disabled){border-color:var(--indigo);background:var(--indigo-light);color:var(--indigo)}.mc-option-selected{border-color:var(--indigo)!important;background:var(--indigo-light)!important;color:var(--indigo)!important;font-weight:600}.mc-option:disabled{cursor:not-allowed;opacity:.7}.text-answer-area{width:100%;border:1.5px solid var(--gray-200);border-radius:var(--radius-sm);padding:.75rem 1rem;font-size:.95rem;color:var(--gray-800);resize:vertical;min-height:100px;outline:none;transition:border-color .15s;background:var(--gray-50)}.text-answer-area:focus{border-color:var(--indigo);background:var(--surface)}.answer-actions{display:flex;gap:.75rem;align-items:center}.mic-answer-btn{display:flex;align-items:center;gap:.4rem;background:var(--gray-100);border:1.5px solid var(--gray-200);border-radius:var(--radius-sm);padding:.6rem 1rem;font-size:.875rem;font-weight:500;color:var(--gray-600);transition:all .15s}.mic-answer-btn:hover:not(:disabled){background:var(--goal-friends-light);border-color:var(--goal-friends);color:var(--goal-friends)}.mic-answer-btn-active{background:#ffe4e6!important;border-color:var(--error)!important;color:var(--error)!important}.mic-answer-btn:disabled{opacity:.5;cursor:not-allowed}.feedback-popup-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#0f172a66;z-index:200;display:flex;align-items:flex-end;animation:fadeIn .2s ease}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.feedback-popup{width:100%;max-width:680px;margin:0 auto;background:var(--surface);border-radius:var(--radius-xl) var(--radius-xl) 0 0;padding:2rem;box-shadow:var(--shadow-lg);animation:slideUp .3s cubic-bezier(.32,.72,0,1)}@keyframes slideUp{0%{transform:translateY(100%)}to{transform:translateY(0)}}.feedback-popup-header{display:flex;align-items:center;gap:1rem;margin-bottom:1.25rem}.feedback-result-icon{width:48px;height:48px;border-radius:50%;display:flex;align-items:center;justify-content:center;flex-shrink:0}.feedback-result-correct{background:var(--success-light);color:var(--success)}.feedback-result-partial{background:var(--warning-light);color:var(--warning)}.feedback-result-wrong{background:var(--error-light);color:var(--error)}.feedback-result-title{font-size:1.1rem;font-weight:800;color:var(--gray-900)}.feedback-result-score{font-size:.85rem;color:var(--gray-400);font-weight:500}.feedback-explanation{background:var(--gray-50);border-radius:var(--radius-sm);padding:1rem 1.25rem;font-size:.9rem;color:var(--gray-700);line-height:1.6;margin-bottom:1rem}.feedback-correction{background:#fff7ed;border:1px solid #fed7aa;border-radius:var(--radius-sm);padding:.875rem 1.25rem;font-size:.9rem;color:#92400e;margin-bottom:1rem}.feedback-correction strong{display:block;margin-bottom:.25rem;color:#78350f;font-weight:700}.feedback-encouragement{font-size:.9rem;color:var(--gray-500);font-style:italic;margin-bottom:1.5rem}.feedback-next-btn{width:100%;background:linear-gradient(135deg,var(--indigo),var(--violet));color:#fff;border:none;border-radius:var(--radius-sm);padding:.875rem 1.5rem;font-size:1rem;font-weight:700;transition:opacity .15s;display:flex;align-items:center;justify-content:center;gap:.5rem}.feedback-next-btn:hover{opacity:.9}.next-inline-btn{margin-top:.25rem}.feedback-close-btn{margin-left:auto;background:none;border:none;color:var(--gray-400);padding:.25rem;border-radius:var(--radius-sm);display:flex;align-items:center;transition:color .15s,background .15s}.feedback-close-btn:hover{background:var(--gray-100);color:var(--gray-700)}.lessons-layout{display:flex;gap:2rem;align-items:flex-start}.lessons-sidebar{width:280px;flex-shrink:0}.lessons-content{flex:1;min-width:0}.topic-picker{display:flex;flex-direction:column;gap:1.25rem}.topic-category-title{font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:var(--gray-400);margin-bottom:.5rem}.topic-list{display:flex;flex-direction:column;gap:.35rem}.topic-btn{background:var(--surface);border:1.5px solid var(--gray-200);border-radius:var(--radius-sm);padding:.5rem .75rem;font-size:.85rem;text-align:left;transition:all .15s;color:var(--gray-700)}.topic-btn:hover:not(:disabled){border-color:var(--indigo);background:var(--indigo-light);color:var(--indigo)}.topic-btn-active{border-color:var(--indigo)!important;background:var(--indigo-light)!important;font-weight:600;color:var(--indigo)!important}.topic-btn:disabled{opacity:.5;cursor:not-allowed}.lesson-actions{margin-bottom:1rem}.lessons-placeholder{padding:3rem;text-align:center;color:var(--gray-400);font-size:1.05rem}.lesson-display{background:var(--surface);border-radius:var(--radius-lg);padding:2rem;box-shadow:var(--shadow);border:1px solid var(--gray-200);line-height:1.8}.lesson-display h2{font-size:1.1rem;margin:1.25rem 0 .5rem;color:var(--indigo);font-weight:700}.lesson-display h2:first-child{margin-top:0}.lesson-display p{margin-bottom:.75rem}.lesson-display ul,.lesson-display ol{padding-left:1.5rem;margin-bottom:.75rem}.lesson-display li{margin-bottom:.3rem}.lesson-display strong{color:var(--gray-900)}.lesson-display code{background:var(--gray-100);padding:.1em .4em;border-radius:4px;font-size:.9em}.read-aloud-btn{background:var(--indigo);color:#fff;border:none;border-radius:var(--radius-sm);padding:.6rem 1.2rem;font-size:.9rem;font-weight:600;transition:background .15s;display:inline-flex;align-items:center;gap:.4rem}.read-aloud-btn:hover:not(:disabled){background:var(--indigo-dark)}.read-aloud-btn:disabled{opacity:.6;cursor:not-allowed}.listen-repeat-layout{display:flex;flex-direction:column;align-items:center;gap:1.5rem}.difficulty-selector{display:flex;gap:.625rem}.difficulty-btn{background:var(--surface);border:1.5px solid var(--gray-200);border-radius:999px;padding:.4rem 1.1rem;font-size:.875rem;font-weight:500;transition:all .15s;color:var(--gray-600)}.difficulty-btn:hover:not(:disabled){border-color:var(--success);color:var(--success)}.difficulty-active{border-color:var(--success)!important;background:var(--success-light)!important;color:var(--success)!important;font-weight:700}.prompt-display{background:var(--surface);border-radius:var(--radius-lg);padding:2rem;box-shadow:var(--shadow);border:1px solid var(--gray-200);text-align:center;min-width:300px}.prompt-text{font-size:1.4rem;font-weight:700;color:var(--gray-900)}.prompt-hidden{font-size:1rem;color:var(--gray-400);font-style:italic}.listen-actions,.speak-actions{display:flex;gap:.75rem;flex-wrap:wrap;justify-content:center}.result-actions{display:flex;flex-direction:column;align-items:center;gap:1rem;width:100%;max-width:400px}.result-buttons{display:flex;gap:.75rem}.result-badge{background:var(--surface);border-radius:var(--radius-lg);padding:1.5rem;box-shadow:var(--shadow);border:1px solid var(--gray-200);text-align:center;width:100%}.result-score{display:flex;align-items:center;justify-content:center;gap:.75rem;margin-bottom:.75rem}.result-emoji{font-size:2rem}.result-number{font-size:1.8rem;font-weight:800}.result-label{font-size:.95rem;font-weight:600;color:var(--gray-500)}.result-good{border-top:3px solid var(--success)}.result-keep-going{border-top:3px solid var(--warning)}.result-feedback{color:var(--gray-500);font-size:.9rem}.mic-btn{background:var(--success);color:#fff;border:none;border-radius:999px;padding:.7rem 1.75rem;font-size:1rem;font-weight:700;transition:all .15s;display:inline-flex;align-items:center;gap:.5rem}.mic-btn:hover:not(:disabled){background:#059669;transform:scale(1.02)}.mic-btn-active{background:var(--error)!important}.mic-btn:disabled{opacity:.5;cursor:not-allowed}.conversation-page{display:flex;flex-direction:column;height:calc(100vh - 120px);max-width:800px}.conversation-page .page-header{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:.5rem;margin-bottom:1rem}.conversation-controls{display:flex;align-items:center;gap:1rem}.toggle-label{display:flex;align-items:center;gap:.4rem;font-size:.875rem;cursor:pointer;color:var(--gray-600)}.chat-history{flex:1;overflow-y:auto;background:var(--surface);border-radius:var(--radius-lg);padding:1.25rem;box-shadow:var(--shadow);border:1px solid var(--gray-200);display:flex;flex-direction:column;gap:.75rem;margin-bottom:1rem}.chat-empty{text-align:center;color:var(--gray-400);padding:2rem;font-size:.9rem}.chat-bubble-wrapper{display:flex;align-items:flex-end;gap:.5rem}.bubble-user{flex-direction:row-reverse}.bubble-avatar{font-size:1.25rem;flex-shrink:0}.chat-bubble{max-width:70%;padding:.7rem 1rem;border-radius:16px;font-size:.9rem;line-height:1.5}.bubble-user-inner{background:linear-gradient(135deg,var(--indigo),var(--violet));color:#fff;border-bottom-right-radius:4px}.bubble-assistant-inner{background:var(--gray-100);color:var(--gray-800);border-bottom-left-radius:4px}.typing-indicator{display:flex;gap:4px;align-items:center;padding:.7rem 1rem!important}.typing-indicator span{width:7px;height:7px;background:var(--gray-400);border-radius:50%;animation:bounce 1.2s infinite}.typing-indicator span:nth-child(2){animation-delay:.2s}.typing-indicator span:nth-child(3){animation-delay:.4s}@keyframes bounce{0%,60%,to{transform:translateY(0)}30%{transform:translateY(-6px)}}.input-bar{display:flex;gap:.5rem;background:var(--surface);border-radius:var(--radius-lg);padding:.75rem;box-shadow:var(--shadow);border:1px solid var(--gray-200)}.input-bar-field{flex:1;border:1.5px solid var(--gray-200);border-radius:var(--radius-sm);padding:.6rem .9rem;font-size:.9rem;outline:none;transition:border .15s;background:var(--gray-50)}.input-bar-field:focus{border-color:var(--indigo);background:var(--surface)}.input-bar-field:disabled{background:var(--gray-100)}.input-mic-btn{background:var(--gray-100);border:1.5px solid var(--gray-200);border-radius:var(--radius-sm);padding:.5rem .75rem;font-size:1.1rem;transition:all .15s;display:flex;align-items:center;justify-content:center}.input-mic-btn:hover:not(:disabled){background:var(--goal-friends-light);border-color:var(--goal-friends)}.mic-active{background:var(--error-light)!important;border-color:var(--error)!important}.input-send-btn{background:linear-gradient(135deg,var(--indigo),var(--violet));color:#fff;border:none;border-radius:var(--radius-sm);padding:.5rem 1.1rem;font-size:.9rem;font-weight:600;transition:opacity .15s;display:flex;align-items:center;justify-content:center}.input-send-btn:hover:not(:disabled){opacity:.9}.input-send-btn:disabled{opacity:.5;cursor:not-allowed}.feedback-layout{display:flex;flex-direction:column;gap:1.5rem;max-width:640px}.feedback-instructions{background:var(--indigo-light);border-radius:var(--radius-sm);padding:1rem 1.25rem;font-size:.9rem;color:var(--indigo);border:1px solid rgba(79,70,229,.15)}.recording-controls{display:flex;flex-direction:column;gap:.75rem}.record-btn{border:none;border-radius:var(--radius-sm);padding:.75rem 1.75rem;font-size:1rem;font-weight:700;transition:all .15s;display:inline-flex;align-items:center;gap:.5rem}.record-start{background:var(--success);color:#fff}.record-start:hover:not(:disabled){background:#059669}.record-stop{background:var(--error);color:#fff}.record-stop:hover{background:#e11d48}.record-btn:disabled{opacity:.5;cursor:not-allowed}.recording-pulse{display:flex;align-items:center;gap:.5rem;color:var(--error);font-weight:600;font-size:.9rem}.pulse-dot{width:10px;height:10px;background:var(--error);border-radius:50%;animation:pulse 1s infinite}@keyframes pulse{0%,to{opacity:1;transform:scale(1)}50%{opacity:.4;transform:scale(1.3)}}.feedback-transcript-preview{background:var(--surface);border-radius:var(--radius-lg);padding:1.25rem;box-shadow:var(--shadow);border:1px solid var(--gray-200);display:flex;flex-direction:column;gap:1rem}.feedback-results{display:flex;flex-direction:column;gap:1.25rem}.feedback-result-actions{display:flex;gap:.75rem;flex-wrap:wrap}.transcript-display{background:var(--surface);border-radius:var(--radius-lg);padding:1.25rem;box-shadow:var(--shadow);border:1px solid var(--gray-200);display:flex;flex-direction:column;gap:1rem}.transcript-block h4{font-size:.8rem;color:var(--gray-400);margin-bottom:.35rem;font-weight:600;text-transform:uppercase;letter-spacing:.04em}.transcript-original{color:var(--gray-500);font-style:italic}.transcript-corrected{color:var(--success);font-weight:600;font-size:1rem}.feedback-card{background:var(--surface);border-radius:var(--radius-lg);padding:1.5rem;box-shadow:var(--shadow);border:1px solid var(--gray-200);display:flex;gap:1.5rem;align-items:flex-start}.score-ring{display:flex;flex-direction:column;align-items:center;justify-content:center;width:80px;height:80px;border-radius:50%;border:4px solid var(--score-color, var(--success));flex-shrink:0}.score-ring-number{font-size:1.5rem;font-weight:800;color:var(--score-color, var(--success))}.score-ring-label{font-size:.68rem;color:var(--gray-400);font-weight:500}.feedback-sections{flex:1;display:flex;flex-direction:column;gap:.75rem}.feedback-section h4{font-size:.9rem;font-weight:700;margin-bottom:.4rem;color:var(--gray-800)}.feedback-section ul{padding-left:1.25rem}.feedback-section li{font-size:.875rem;color:var(--gray-500);margin-bottom:.25rem}.loading-spinner{display:flex;flex-direction:column;align-items:center;gap:.75rem;padding:2rem;color:var(--gray-400);font-size:.9rem}.spinner{width:32px;height:32px;border:3px solid var(--gray-200);border-top-color:var(--indigo);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.error-message{background:var(--error-light);border:1px solid #fca5a5;border-radius:var(--radius-sm);padding:.75rem 1rem;color:#be123c;font-size:.875rem}.encouragement-banner{display:flex;align-items:center;gap:.75rem;border-radius:var(--radius-sm);padding:.75rem 1rem;font-size:.875rem;margin-bottom:1rem}.encouragement-info{background:var(--indigo-light);color:var(--indigo);border:1px solid rgba(79,70,229,.15)}.encouragement-success{background:var(--success-light);color:#065f46;border:1px solid rgba(16,185,129,.15)}.encouragement-warning,.encouragement-chrome{background:var(--warning-light);color:#78350f;border:1px solid rgba(245,158,11,.15)}.banner-icon{flex-shrink:0}.btn-primary{background:linear-gradient(135deg,var(--indigo),var(--violet));color:#fff;border:none;border-radius:var(--radius-sm);padding:.65rem 1.4rem;font-size:.9rem;font-weight:600;transition:opacity .15s;display:inline-flex;align-items:center;gap:.4rem}.btn-primary:hover:not(:disabled){opacity:.9}.btn-primary:disabled{opacity:.5;cursor:not-allowed}.btn-secondary{background:var(--surface);color:var(--gray-700);border:1.5px solid var(--gray-200);border-radius:var(--radius-sm);padding:.65rem 1.4rem;font-size:.9rem;font-weight:500;transition:all .15s;display:inline-flex;align-items:center;gap:.4rem}.btn-secondary:hover:not(:disabled){border-color:var(--indigo);color:var(--indigo)}.btn-secondary:disabled{opacity:.5;cursor:not-allowed}.btn-ghost{background:none;border:none;color:var(--gray-500);font-size:.85rem;padding:.3rem .5rem;border-radius:var(--radius-sm);transition:background .15s}.btn-ghost:hover{background:var(--gray-100)}.btn-large{padding:.875rem 2rem;font-size:1rem}.btn-full{width:100%;justify-content:center}.curriculum-grid{display:flex;flex-direction:column;gap:1.25rem;max-width:860px}.curriculum-category{background:var(--surface);border-radius:var(--radius-lg);padding:1.25rem 1.5rem;box-shadow:var(--shadow);border:1px solid var(--gray-200)}.curriculum-category-title{display:flex;align-items:center;gap:.6rem;font-size:1rem;font-weight:700;color:var(--gray-800);margin-bottom:1rem}.level-row{display:flex;align-items:center;gap:0}.level-dot-wrapper{display:flex;flex-direction:column;align-items:center;gap:.4rem}.level-dot{width:48px;height:48px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:.8rem;font-weight:700;transition:all .15s;border:2.5px solid transparent}.level-dot-locked{background:var(--gray-100);border-color:var(--gray-200);color:var(--gray-400);cursor:not-allowed}.level-dot-unlocked{background:var(--indigo-light);border-color:var(--indigo);color:var(--indigo);cursor:pointer}.level-dot-unlocked:hover{background:var(--indigo);color:#fff;transform:scale(1.08);box-shadow:0 4px 12px #4f46e559}.level-dot-done{background:var(--indigo);border-color:var(--indigo-dark);color:#fff;cursor:pointer}.level-dot-done:hover{background:var(--indigo-dark);transform:scale(1.05)}.level-dot-test.level-dot-unlocked{background:#ede9fe;border-color:var(--violet);color:var(--violet)}.level-dot-test.level-dot-unlocked:hover{background:var(--violet);color:#fff}.level-dot-test.level-dot-done{background:var(--violet);border-color:#6d28d9}.level-dot-label{font-size:.72rem;color:var(--gray-500);text-align:center;max-width:80px;line-height:1.2}.level-dot-score{font-size:.68rem;font-weight:700;color:var(--success)}.level-connector{flex:1;height:2.5px;background:var(--indigo);margin-bottom:1.5rem;min-width:16px}.level-connector-locked{background:var(--gray-200)}.lesson-intro-screen{max-width:680px;display:flex;flex-direction:column;gap:1rem}.back-btn{display:inline-flex;align-items:center;gap:.35rem;align-self:flex-start}.lesson-intro-card{background:var(--surface);border-radius:var(--radius-lg);padding:2rem;box-shadow:var(--shadow-md);border:1px solid var(--gray-200);display:flex;flex-direction:column;gap:1.5rem}.lesson-intro-header{display:flex;align-items:flex-start;gap:1rem}.lesson-category-emoji{font-size:2rem;flex-shrink:0}.lesson-intro-category{font-size:.8rem;font-weight:600;color:var(--gray-400);text-transform:uppercase;letter-spacing:.05em}.lesson-intro-title{font-size:1.4rem;font-weight:800;color:var(--gray-900)}.difficulty-badge{margin-left:auto;padding:.25rem .7rem;border-radius:999px;font-size:.75rem;font-weight:700;text-transform:capitalize;flex-shrink:0}.difficulty-easy{background:var(--success-light);color:#065f46}.difficulty-medium{background:var(--warning-light);color:#78350f}.difficulty-hard{background:var(--error-light);color:#be123c}.difficulty-test{background:#ede9fe;color:var(--violet)}.lesson-intro-body{font-size:.95rem;line-height:1.7;color:var(--gray-700)}.lesson-intro-body p{margin-bottom:.75rem}.lesson-intro-body ul,.lesson-intro-body ol{padding-left:1.25rem;margin-bottom:.75rem}.lesson-intro-body li{margin-bottom:.3rem}.lesson-intro-body strong{color:var(--gray-900)}.lesson-intro-body code{background:var(--gray-100);padding:.1em .35em;border-radius:4px;font-size:.88em}.start-btn{align-self:flex-start}.level-session-screen{max-width:680px;display:flex;flex-direction:column;gap:1.25rem}.session-header{display:flex;align-items:center;gap:1rem}.session-progress-info{flex:1;display:flex;flex-direction:column}.session-level-label{font-size:.85rem;font-weight:700;color:var(--gray-700)}.session-q-counter{font-size:.8rem;color:var(--gray-400)}.session-progress-bar{height:6px;background:var(--gray-200);border-radius:999px;overflow:hidden}.session-progress-fill{height:100%;background:linear-gradient(90deg,var(--indigo),var(--violet));border-radius:999px;transition:width .4s ease}.session-question-area{display:flex;flex-direction:column;gap:1rem}.replay-question-btn{display:inline-flex;align-items:center;gap:.4rem;align-self:flex-start;background:var(--indigo-light);color:var(--indigo);border:1.5px solid rgba(79,70,229,.2);border-radius:var(--radius-sm);padding:.35rem .85rem;font-size:.82rem;font-weight:600;transition:all .15s}.replay-question-btn:hover:not(:disabled){background:var(--indigo);color:#fff}.replay-question-btn:disabled{opacity:.5;cursor:not-allowed}.replay-question-btn-active{background:var(--indigo);color:#fff}.mc-voice-transcript{background:var(--gray-50);border:1.5px solid var(--indigo);border-radius:var(--radius-sm);padding:.6rem .9rem;font-size:.9rem;color:var(--gray-700);min-height:2.4rem}.transcript-placeholder{color:var(--gray-400);font-style:italic}.level-complete-screen{display:flex;align-items:center;justify-content:center;min-height:60vh}.level-complete-card{background:var(--surface);border-radius:var(--radius-xl);padding:3rem 2.5rem;box-shadow:var(--shadow-lg);border:1px solid var(--gray-200);display:flex;flex-direction:column;align-items:center;gap:1rem;max-width:420px;width:100%;text-align:center}.complete-icon{font-size:3.5rem}.complete-title{font-size:1.75rem;font-weight:800;color:var(--gray-900)}.complete-subtitle{font-size:1rem;color:var(--gray-500);margin-bottom:.5rem}.score-ring-wrapper{position:relative;display:inline-flex;align-items:center;justify-content:center;margin:.5rem 0}.score-ring-wrapper .score-ring-label{position:absolute;display:flex;align-items:baseline;gap:1px}.score-ring-wrapper .score-ring-number{font-size:1.75rem;font-weight:800;color:var(--gray-900)}.score-ring-pct{font-size:.9rem;font-weight:600;color:var(--gray-500)}.complete-actions{display:flex;flex-direction:column;gap:.75rem;width:100%;margin-top:.5rem}.complete-actions .btn-primary,.complete-actions .btn-secondary{justify-content:center}@media (max-width: 720px){.lessons-layout{flex-direction:column}.lessons-sidebar{width:100%}.home-title{font-size:1.7rem}.mode-grid{grid-template-columns:1fr}.header-nav{display:none}.conversation-page{height:calc(100vh - 100px)}.feedback-card{flex-direction:column;align-items:center}.goal-grid{grid-template-columns:1fr}.practice-page{gap:1rem}.question-card{padding:1.5rem}.question-text{font-size:1.05rem}.feedback-popup{padding:1.5rem}}
