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var(--border-light);flex-shrink:0;justify-content:space-between;align-items:center;padding:14px 18px;display:flex}.tutor-identity{align-items:center;gap:10px;display:flex}.tutor-avatar{background:var(--primary-light);border-radius:50%;justify-content:center;align-items:center;width:34px;height:34px;font-size:16px;display:flex}.tutor-name{color:var(--text-1);font-size:13px;font-weight:700}.tutor-status{color:var(--green);align-items:center;gap:3px;margin-top:1px;font-size:11px;display:flex}.tutor-status:before{content:"";background:var(--green);border-radius:50%;width:6px;height:6px}.tutor-status.offline{color:var(--red)}.tutor-status.offline:before{background:var(--red)}.tutor-tokens{background:var(--gold-light);color:var(--gold-deep);border-radius:20px;padding:4px 10px;font-size:12px;font-weight:700}.tutor-messages{scroll-behavior:smooth;flex-direction:column;flex:1;gap:10px;padding:14px;display:flex;overflow-y:auto}.tutor-message{background:var(--primary-light);color:var(--text-2);border-radius:12px 12px 12px 2px;max-width:92%;padding:10px 14px;font-size:13px;line-height:1.55;animation:.2s fadeInMsg}.student-message{background:var(--primary);color:var(--on-panel);border-radius:12px 12px 2px;align-self:flex-end;max-width:85%;padding:10px 14px;font-size:13px;line-height:1.55;animation:.2s fadeInMsg}.tutor-input-area{border-top:1px solid var(--border-light);flex-shrink:0;align-items:center;gap:8px;padding:10px 14px;display:flex}.tutor-input{border:1.5px solid var(--border);font-family:var(--font-body);color:var(--text-1);background:var(--surface);border-radius:20px;outline:none;flex:1;padding:9px 14px;font-size:13px;transition:border-color 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var(--border);border-radius:var(--radius);background:var(--surface);font-family:var(--font-body);color:var(--text-2);cursor:pointer;text-align:center;padding:17px 18px;font-size:14.5px;font-weight:500;line-height:1.4;transition:all .15s;position:relative}.choice-btn:hover:not(:disabled){border-color:var(--primary);background:var(--primary-light);color:var(--primary);transform:translateY(-1px)}.choice-btn.correct{border-color:var(--green);background:var(--green-light);color:var(--green);font-weight:600}.choice-btn.correct:after{content:"✓";color:var(--green);font-size:15px;font-weight:700;position:absolute;top:50%;right:14px;transform:translateY(-50%)}.choice-btn.wrong{border-color:var(--red);background:var(--red-light);color:var(--red)}.choice-btn.wrong:after{content:"✕";color:var(--red);font-size:15px;position:absolute;top:50%;right:14px;transform:translateY(-50%)}.choice-btn:disabled{cursor:default}.hint-popup{background:var(--gold-light);border:1px solid var(--gold-deep);border-radius:var(--radius-sm);color:var(--text-2);margin-top:14px;padding:11px 15px;font-size:13px;line-height:1.5;animation:.25s fadeIn}.quiz-footer{justify-content:space-between;align-items:center;display:flex}.hint-btn{border:1.5px solid var(--border);border-radius:var(--radius-full);background:var(--surface);font-family:var(--font-body);color:var(--text-2);cursor:pointer;align-items:center;gap:6px;padding:10px 15px;font-size:13px;transition:all .15s;display:flex}.hint-btn:hover{border-color:var(--gold);color:var(--gold)}.next-btn{background:var(--primary);color:var(--on-panel);border-radius:var(--radius-full);font-family:var(--font-body);cursor:pointer;border:none;align-items:center;gap:6px;padding:11px 22px;font-size:14px;font-weight:600;transition:all 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16px;display:flex}.summary-score-number{font-family:var(--font-display);color:var(--on-panel);font-size:28px;font-weight:800;line-height:1}.summary-score-pct{color:var(--on-panel);font-size:12px}.summary-grade{font-family:var(--font-display);color:var(--text-1);margin-bottom:22px;font-size:19px;font-weight:700}.summary-stats-grid{background:var(--primary-light);border-radius:var(--radius);grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:22px;padding:14px;display:grid}.summary-stat{text-align:center}.summary-stat-label{color:var(--text-3);text-transform:uppercase;letter-spacing:.05em;margin-bottom:3px;font-size:10.5px}.summary-stat-value{font-family:var(--font-display);color:var(--text-1);font-size:16px;font-weight:700}.xp-badge{background:var(--primary-light);color:var(--primary);border-radius:20px;align-items:center;gap:5px;margin-bottom:22px;padding:6px 14px;font-size:13px;font-weight:700;display:inline-flex}.btn-back-dashboard{background:var(--primary);width:100%;color:var(--on-panel);border-radius:var(--radius-full);font-family:var(--font-body);cursor:pointer;border:none;justify-content:center;align-items:center;gap:7px;padding:13px;font-size:14px;font-weight:600;transition:all .15s;display:flex}.btn-back-dashboard:hover{background:var(--primary-hover);box-shadow:var(--shadow-button);transform:translateY(-1px)}.placeholder-screen{text-align:center;flex-direction:column;justify-content:center;align-items:center;gap:12px;min-height:60vh;display:flex}.placeholder-icon{opacity:.38;font-size:46px}.placeholder-text{color:var(--text-3);font-size:15px}.reset-btn{background:var(--red-light);color:var(--red);border:1px solid var(--red);border-radius:var(--radius-sm);font-family:var(--font-body);cursor:pointer;margin-top:8px;padding:9px 20px;font-size:13px;font-weight:600;transition:all 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fadeInMsg{0%{opacity:0;transform:translateY(4px)}to{opacity:1;transform:translateY(0)}}@keyframes slideInToast{0%{opacity:0;transform:translate(16px)}to{opacity:1;transform:translate(0)}}@keyframes fadeOutToast{0%{opacity:1}to{opacity:0;pointer-events:none}}@keyframes bounce{0%,60%,to{transform:translateY(0)}30%{transform:translateY(-5px)}}@keyframes pulse{0%,to{opacity:1;transform:scale(1)}50%{opacity:.5;transform:scale(.88)}}@keyframes glowPulse{0%,to{opacity:1}50%{opacity:.7}}@keyframes confettiFall{0%{opacity:1;transform:translateY(-20px)rotate(0)}to{opacity:0;transform:translateY(100vh)rotate(720deg)}}.placeholder-screen{text-align:center;padding:2rem}.placeholder-icon{margin-bottom:1rem;font-size:4rem}.placeholder-screen h1{color:var(--text-1);margin-bottom:.5rem;font-size:1.75rem}.placeholder-screen p{color:var(--text-3);margin-bottom:1.5rem}.placeholder-features{flex-direction:column;gap:.75rem;max-width:280px;margin:0 auto;display:flex}.placeholder-features .feature{background:var(--surface);border-radius:var(--radius-sm);color:var(--text-2);padding:.75rem;font-size:.9rem}.subject-header{margin-bottom:1.5rem}.btn-back{color:var(--text-2);cursor:pointer;background:0 0;border:none;margin-bottom:.5rem;padding:.5rem 1rem;font-size:.9rem}.btn-back:hover{color:var(--primary)}.subject-title{color:var(--text-1);align-items:center;gap:.5rem;font-size:1.75rem;display:flex}.subject-icon{font-size:1.5rem}.subject-stats{grid-template-columns:repeat(2,1fr);gap:1rem;margin-bottom:1.5rem;display:grid}.lesson-grid{grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:24px;margin-bottom:32px;display:grid}.lesson-card{background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow);border-radius:16px;padding:24px;transition:all .2s}.lesson-card:hover{box-shadow:var(--shadow-lg);border-color:var(--primary);transform:translate(4px)}.lesson-card-title{color:var(--text-1);margin-bottom:8px;font-size:18px;font-weight:700}.lesson-card-meta{color:var(--text-3);margin-bottom:8px;font-size:14px}.lesson-card-questions{color:var(--text-2);margin-bottom:16px;font-size:14px}.btn-start-lesson{border-radius:var(--radius-full);background:var(--primary);width:100%;color:var(--on-panel);cursor:pointer;border:none;padding:12px 20px;font-size:14px;font-weight:600;transition:all .2s}.btn-start-lesson:hover{background:var(--primary-hover);box-shadow:var(--shadow-button)}.btn-start-lesson.ela{background:var(--accent)}.btn-start-lesson.ela:hover{box-shadow:var(--shadow-button)}.empty-state{text-align:center;color:var(--text-3);padding:2rem}.boss-section{background:var(--primary-light);border:1px solid var(--primary-light);text-align:center;border-radius:20px;margin-top:32px;padding:28px}.boss-section h2{color:var(--primary);margin-bottom:8px;font-size:22px}.boss-section p{color:var(--text-2);margin-bottom:20px}.btn-boss{border-radius:var(--radius-full);background:linear-gradient(135deg, var(--primary), var(--accent));color:var(--on-panel);cursor:pointer;border:none;padding:16px 32px;font-weight:600}.btn-boss:hover{box-shadow:var(--shadow-button);transform:translateY(-2px)}.progress-header{margin-bottom:32px}.progress-header h1{color:var(--text-1);margin-bottom:8px;font-size:32px;font-weight:700}.progress-header p{color:var(--text-2);font-size:16px}.progress-stats-grid{grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:32px;display:grid}.progress-stats-grid .stat-card{align-items:center;gap:16px;padding:20px 24px;display:flex}.progress-stats-grid .stat-icon{border-radius:16px;justify-content:center;align-items:center;width:52px;height:52px;font-size:24px;display:flex}.progress-stats-grid .stat-icon.purple{background:var(--primary-light)}.progress-stats-grid .stat-icon.gold{background:var(--gold-light)}.progress-stats-grid .stat-icon.orange{background:var(--orange-light)}.progress-stats-grid .stat-icon.accent{background:var(--accent-light)}.progress-stats-grid .stat-value{color:var(--text-1);font-size:28px;font-weight:700}.progress-stats-grid .stat-label{color:var(--text-2);font-size:14px}.progress-section{margin-bottom:36px}.progress-section h2{color:var(--text-1);margin-bottom:20px;font-size:20px;font-weight:600}.mastery-card{background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow);border-radius:20px;padding:28px 32px}.mastery-bar-container{margin-bottom:24px}.mastery-label{color:var(--text-1);justify-content:space-between;margin-bottom:10px;font-size:15px;font-weight:600;display:flex}.mastery-bar{background:var(--primary-light);border-radius:var(--radius-full);height:12px;overflow:hidden}.mastery-fill{background:var(--primary);border-radius:var(--radius-full);height:100%;transition:width .5s}.mastery-stats{gap:40px;display:flex}.mastery-stat{flex-direction:column;display:flex}.mastery-stat-value{color:var(--text-1);font-size:24px;font-weight:700}.mastery-stat-label{color:var(--text-2);font-size:13px}.subject-breakdown-grid{grid-template-columns:repeat(2,1fr);gap:24px;display:grid}.subject-progress-card{background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow);border-radius:20px;padding:28px}.subject-progress-card.math{border-left:4px solid var(--primary)}.subject-progress-card.ela{border-left:4px solid var(--accent)}.subject-card-header{align-items:center;gap:12px;margin-bottom:20px;display:flex}.subject-progress-card .subject-icon{border-radius:14px;justify-content:center;align-items:center;width:44px;height:44px;font-size:20px;display:flex}.subject-progress-card .subject-icon.math{background:var(--primary-light)}.subject-progress-card .subject-icon.ela{background:var(--accent-light)}.subject-name{color:var(--text-1);font-size:20px;font-weight:600}.subject-card-stats{gap:24px;margin-bottom:20px;display:flex}.subject-xp{color:var(--primary);font-size:18px;font-weight:700}.subject-lessons,.subject-questions{color:var(--text-2);font-size:14px}.subject-progress-bar{background:var(--primary-light);border-radius:var(--radius-full);height:10px;margin-bottom:20px;overflow:hidden}.subject-progress-card.math .subject-progress-bar{background:var(--primary-light)}.subject-progress-card.ela .subject-progress-bar{background:var(--accent-light)}.subject-fill{background:var(--primary);border-radius:var(--radius-full);height:100%;transition:width .5s}.subject-progress-card.ela .subject-fill{background:linear-gradient(135deg, var(--accent), var(--accent-hover))}.btn-continue{border-radius:var(--radius-full);cursor:pointer;border:none;width:100%;padding:14px 24px;font-size:15px;font-weight:600;transition:all .2s}.btn-continue.btn-math{background:var(--primary);color:var(--on-panel)}.btn-continue.btn-math:hover{background:var(--primary-hover);box-shadow:var(--shadow-button);transform:translateY(-2px)}.btn-continue.btn-ela{background:var(--accent);color:var(--on-panel)}.btn-continue.btn-ela:hover{background:var(--accent-hover);box-shadow:var(--shadow-button);transform:translateY(-2px)}.achievements-grid{grid-template-columns:repeat(5,1fr);gap:16px;display:grid}.achievement-card{background:var(--surface);border:1px solid var(--border);text-align:center;box-shadow:var(--shadow);border-radius:16px;padding:20px}.achievement-card.locked{opacity:.5}.achievement-card.unlocked{border-color:var(--primary)}.achievement-icon{margin-bottom:12px;font-size:32px}.achievement-label{color:var(--text-1);margin-bottom:4px;font-size:14px;font-weight:600}.achievement-desc{color:var(--text-2);margin-bottom:8px;font-size:12px}.achievement-status{font-size:14px}.activity-list{background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow);border-radius:20px;padding:24px}.activity-item{border-bottom:1px solid var(--border);align-items:center;gap:16px;padding:16px 0;display:flex}.activity-item:last-child{border-bottom:none}.activity-subject{background:var(--primary-light);border-radius:12px;justify-content:center;align-items:center;width:44px;height:44px;font-size:20px;display:flex}.activity-details{flex:1}.activity-title{color:var(--text-1);font-size:15px;font-weight:600}.activity-meta,.activity-date{color:var(--text-2);font-size:13px}.empty-activity{text-align:center;color:var(--text-2);padding:24px;font-size:15px}