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var(--transition-fast);width:40px;height:40px;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center}.modal-close:hover{background:#0000000d;color:var(--text-primary);transform:rotate(90deg)}.modal-form{padding:var(--spacing-xl)}.modal-info-section{background:#667eea0d;border-radius:var(--radius-lg);padding:var(--spacing-lg);margin-bottom:var(--spacing-xl);border:1px solid rgba(102,126,234,.1)}.info-item{display:flex;align-items:center;gap:var(--spacing-md);margin-bottom:var(--spacing-md)}.info-item:last-child{margin-bottom:0}.info-icon{width:44px;height:44px;border-radius:var(--radius-lg);background:var(--primary-gradient);color:#fff;display:flex;align-items:center;justify-content:center;font-size:20px;flex-shrink:0;box-shadow:var(--shadow-sm)}.form-group{margin-bottom:var(--spacing-lg)}.form-group label{display:flex;align-items:center;gap:var(--spacing-sm);margin-bottom:var(--spacing-sm);font-weight:600;color:var(--text-primary);font-size:14px}.form-group input,.form-group select,.form-group textarea{width:100%;padding:var(--spacing-md);border:2px solid var(--border-light);border-radius:var(--radius-md);font-size:15px;transition:all var(--transition-fast);background:#fff}.form-group input:focus,.form-group select:focus,.form-group textarea:focus{outline:none;border-color:#667eea;box-shadow:0 0 0 3px #667eea1a}.form-group textarea{min-height:100px;resize:vertical}.response-form-textarea{background:linear-gradient(135deg,#fffffff2,#f8fafce6);border:2px solid rgba(102,126,234,.2);border-radius:16px;padding:16px;font-size:14px;transition:all .3s cubic-bezier(.34,1.56,.64,1);resize:vertical;min-height:120px}.response-form-textarea:focus{border-color:#667eea;box-shadow:0 0 0 4px #667eea1a;outline:none;transform:translateY(-2px)}.response-form-textarea::placeholder{color:#667eea80}.response-char-counter{font-size:12px;color:var(--text-tertiary);text-align:right;margin-top:8px;animation:counterPulse 2s infinite}@keyframes counterPulse{0%,to{opacity:.7}50%{opacity:1}}.rating-input{display:flex;align-items:center;gap:var(--spacing-sm);margin:var(--spacing-md) 0;padding:16px;background:linear-gradient(135deg,#ffffffe6,#fffc);border:2px solid rgba(102,126,234,.2);border-radius:20px}.modal-response .rating-input{background:linear-gradient(135deg,#ffffffe6,#fffc);border:2px solid rgba(102,126,234,.2);border-radius:20px;padding:16px}.rating-star{background:none;border:none;font-size:28px;color:#e4e5e9;cursor:pointer;transition:all .3s cubic-bezier(.34,1.56,.64,1);padding:0;width:40px;height:40px;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-md)}.modal-response .rating-star{width:44px;height:44px;border-radius:50%;background:#fff;box-shadow:0 4px 12px #0000001a;transition:all .3s cubic-bezier(.34,1.56,.64,1)}.rating-star:hover{background:#ffc1071a;color:#ffc107;transform:scale(1.1)}.modal-response .rating-star:hover{transform:scale(1.2) rotate(15deg);box-shadow:0 8px 20px #667eea4d}.rating-star.selected{color:#ffc107;background:#ffc10726;transform:scale(1.1)}.modal-response .rating-star.selected{background:linear-gradient(135deg,#f59e0b,#d97706);color:#fff;transform:scale(1.3);box-shadow:0 10px 25px #f59e0b66}.rating-number{margin-left:auto;width:60px;padding:var(--spacing-sm);border:2px solid var(--border-light);border-radius:var(--radius-md);font-size:16px;font-weight:600;text-align:center}.rating-hint{font-size:12px;color:var(--text-tertiary);margin-top:var(--spacing-xs);font-style:italic}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:var(--spacing-lg)}.modal-actions{display:flex;gap:var(--spacing-md);margin-top:var(--spacing-xl)}.btn-cancel{flex:1;padding:var(--spacing-md);background:#fff;border:2px solid var(--border-light);color:var(--text-secondary);border-radius:var(--radius-md);font-weight:600;cursor:pointer;transition:all var(--transition-base)}.btn-cancel:hover{background:var(--bg-hover);border-color:var(--border-medium);transform:translateY(-2px)}.btn-save{flex:1;padding:var(--spacing-md);background:var(--primary-gradient);color:#fff;border:none;border-radius:var(--radius-md);font-weight:600;cursor:pointer;transition:all var(--transition-base);display:flex;align-items:center;justify-content:center;gap:var(--spacing-sm)}.btn-save:hover{transform:translateY(-2px);box-shadow:0 8px 20px #667eea66}.loading-container{text-align:center;padding:var(--spacing-2xl);display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:400px}.spinner{width:60px;height:60px;border:4px solid rgba(102,126,234,.1);border-top:4px solid #667eea;border-radius:50%;animation:spin 1s linear infinite;margin:0 auto var(--spacing-lg)}.loading-text{color:var(--text-secondary);font-size:15px;font-weight:500;font-family:var(--font-heading)}.error-message{background:linear-gradient(135deg,#fee2e2,#fecaca);border:1px solid #fca5a5;color:#b91c1c;padding:var(--spacing-lg);border-radius:var(--radius-xl);margin-bottom:var(--spacing-lg);display:flex;align-items:center;gap:var(--spacing-md);animation:slideIn var(--transition-base);box-shadow:var(--shadow-md)}.error-icon{font-size:24px;flex-shrink:0}.empty-state{text-align:center;padding:var(--spacing-2xl);display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:300px;background:#fff;border-radius:var(--radius-2xl);border:2px dashed var(--border-light);margin:0 auto;max-width:400px}.empty-icon{font-size:64px;opacity:.3;margin-bottom:var(--spacing-lg);background:linear-gradient(135deg,#667eea,#764ba2);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.empty-state h3{font-family:var(--font-heading);font-size:20px;font-weight:700;color:var(--text-secondary);margin-bottom:var(--spacing-sm)}.empty-state p{color:var(--text-tertiary);font-size:15px;max-width:280px;margin:0 auto}@media (max-width: 1200px){.filter-cards{grid-template-columns:repeat(2,1fr)}}@media (max-width: 768px){.page-header{flex-direction:column;gap:var(--spacing-lg);padding:var(--spacing-lg);text-align:center}.header-actions{width:100%;justify-content:space-between}.back-to-dashboard,.logout-button{min-width:120px}.filter-cards{grid-template-columns:1fr;padding:0 var(--spacing-lg)}.sessions-grid{grid-template-columns:1fr}.sessions-content{padding:0 var(--spacing-lg) var(--spacing-lg)}.session-header{flex-wrap:wrap;gap:var(--spacing-sm)}.session-response-status{width:100%;align-items:flex-start;margin-top:var(--spacing-sm)}.response-actions{flex-direction:column}.btn-response{width:100%}.rating-display{flex-direction:column;gap:4px;align-items:flex-start}.floating-response-indicator{width:20px;height:20px;font-size:8px}}@media (max-width: 480px){:root{--spacing-2xl: 24px;--spacing-xl: 16px}.filter-card{padding:var(--spacing-lg);min-height:160px}.card-title{font-size:18px;min-height:48px}.session-card{padding:var(--spacing-md)}.modal-content{max-width:95%}}@media print{.response-badge,.rating-display,.btn-response,.floating-response-indicator,.response-timeline{animation:none!important}}@media (prefers-color-scheme: dark){.response-badge.has-response{background:linear-gradient(135deg,#00c9a7,#00a8cc)}.response-badge.no-response{background:linear-gradient(135deg,#5a5fd8,#7c4dff)}.response-preview{background:linear-gradient(135deg,#1e293be6,#0f172acc);border-color:#ffffff1a}.response-form-textarea{background:linear-gradient(135deg,#1e293bf2,#0f172ae6);border-color:#667eea4d;color:#fff}.rating-display{background:linear-gradient(135deg,#f59e0b33,#d9770633)}}:root{--primary-color: #4f46e5;--primary-light: #6366f1;--primary-dark: #4338ca;--secondary-color: #10b981;--danger-color: #ef4444;--warning-color: #f59e0b;--info-color: #3b82f6;--light-bg: #f8fafc;--card-bg: #ffffff;--text-dark: #1e293b;--text-medium: #64748b;--text-light: #94a3b8;--border-color: #e2e8f0;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .1);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1);--shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, .1);--radius-sm: .375rem;--radius-md: .5rem;--radius-lg: .75rem;--radius-xl: 1rem;--spacing-xs: .25rem;--spacing-sm: .5rem;--spacing-md: 1rem;--spacing-lg: 1.5rem;--spacing-xl: 2rem;--spacing-2xl: 3rem}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,sans-serif;background-color:var(--light-bg);color:var(--text-dark);line-height:1.5}.main-wrapper{max-width:1400px;margin:0 auto;padding:var(--spacing-xl)}.page-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--spacing-2xl);padding-bottom:var(--spacing-lg);border-bottom:1px solid var(--border-color)}.page-title{font-size:2rem;font-weight:700;color:var(--text-dark);display:flex;align-items:center;gap:var(--spacing-sm)}.page-title:before{content:"";display:block;width:6px;height:2rem;background:linear-gradient(to bottom,var(--primary-color),var(--primary-light));border-radius:var(--radius-sm)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--spacing-xs);padding:.625rem 1.25rem;border-radius:var(--radius-md);font-weight:500;font-size:.875rem;transition:all .2s ease;cursor:pointer;border:none;outline:none}.btn:disabled{opacity:.6;cursor:not-allowed}.btn-primary{background-color:var(--primary-color);color:#fff}.btn-primary:hover:not(:disabled){background-color:var(--primary-dark);transform:translateY(-1px);box-shadow:var(--shadow-md)}.btn-secondary{background-color:var(--secondary-color);color:#fff}.btn-secondary:hover:not(:disabled){background-color:#0da271;transform:translateY(-1px);box-shadow:var(--shadow-md)}.btn-warning{background-color:var(--warning-color);color:#fff}.btn-warning:hover:not(:disabled){background-color:#e68a00;transform:translateY(-1px);box-shadow:var(--shadow-md)}.btn-info{background-color:var(--info-color);color:#fff}.btn-info:hover:not(:disabled){background-color:#2563eb;transform:translateY(-1px);box-shadow:var(--shadow-md)}.btn-danger{background-color:var(--danger-color);color:#fff}.btn-danger:hover:not(:disabled){background-color:#dc2626;transform:translateY(-1px);box-shadow:var(--shadow-md)}.btn-outline{background-color:transparent;color:var(--text-medium);border:1px solid var(--border-color)}.btn-outline:hover:not(:disabled){background-color:var(--light-bg);border-color:var(--text-light)}.btn-icon{padding:.5rem}.btn-back{background-color:transparent;color:var(--text-medium);border:1px solid var(--border-color)}.btn-back:hover{background-color:var(--light-bg);border-color:var(--text-light)}.sections-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--spacing-lg);margin-bottom:var(--spacing-2xl)}.section-card{background:var(--card-bg);border-radius:var(--radius-lg);padding:var(--spacing-lg);cursor:pointer;transition:all .3s ease;border:1px solid var(--border-color);display:flex;flex-direction:column;align-items:center;text-align:center;position:relative;overflow:hidden}.section-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-xl);border-color:var(--primary-light)}.section-card:before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(to right,var(--primary-color),var(--primary-light));border-radius:var(--radius-lg) var(--radius-lg) 0 0}.section-card h3{font-size:1.25rem;font-weight:600;color:var(--text-dark);margin-bottom:var(--spacing-sm)}.section-card p{color:var(--text-medium);font-size:.875rem;margin-bottom:var(--spacing-md)}.section-card .student-count{font-size:2rem;font-weight:700;color:var(--primary-color);margin-top:var(--spacing-sm)}.students-container{animation:fadeIn .3s ease}.section-heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--spacing-xl);padding-bottom:var(--spacing-md);border-bottom:1px solid var(--border-color)}.section-heading h3{font-size:1.5rem;font-weight:600;color:var(--text-dark)}.section-heading .section-badge{background-color:var(--primary-light);color:#fff;padding:.25rem .75rem;border-radius:var(--radius-md);font-size:.875rem;font-weight:500}.students-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--spacing-lg);margin-bottom:var(--spacing-xl)}.student-card{background:var(--card-bg);border-radius:var(--radius-lg);padding:var(--spacing-lg);border:1px solid var(--border-color);transition:all .3s ease;position:relative}.student-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}.student-header{display:flex;align-items:flex-start;justify-content:space-between;margin-bottom:var(--spacing-md)}.student-name{font-size:1.25rem;font-weight:600;color:var(--text-dark)}.student-arid{font-size:.875rem;color:var(--text-medium);background-color:var(--light-bg);padding:.25rem .5rem;border-radius:var(--radius-sm)}.student-details{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--spacing-sm);margin-bottom:var(--spacing-md)}.detail-item{display:flex;flex-direction:column;gap:.125rem}.detail-label{font-size:.75rem;color:var(--text-light);text-transform:uppercase;letter-spacing:.05em}.detail-value{font-size:.875rem;color:var(--text-dark);font-weight:500}.student-actions{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--spacing-sm);margin-top:var(--spacing-md)}.student-actions .btn{padding:.5rem;font-size:.75rem;display:flex;flex-direction:column;align-items:center;gap:.25rem}.modal-overlay{position:fixed;inset:0;background-color:#000000f2;display:flex;align-items:center;justify-content:center;z-index:999999!important;padding:var(--spacing-md);animation:fadeIn .2s ease;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}.modal-content{background:var(--card-bg);border-radius:var(--radius-lg);width:100%;max-width:800px;max-height:90vh;display:flex;flex-direction:column;animation:slideUp .3s ease;box-shadow:var(--shadow-xl)}.modal-large{max-width:1000px}.modal-header{display:flex;align-items:center;justify-content:space-between;padding:var(--spacing-lg);border-bottom:1px solid var(--border-color)}.modal-title{font-size:1.5rem;font-weight:600;color:var(--text-dark);display:flex;align-items:center;gap:var(--spacing-sm)}.modal-body{padding:var(--spacing-lg);overflow-y:auto;flex:1}.modal-footer{padding:var(--spacing-lg);border-top:1px solid var(--border-color);display:flex;justify-content:flex-end;gap:var(--spacing-sm)}.sessions-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--spacing-md)}.session-card{background:var(--light-bg);border-radius:var(--radius-md);padding:var(--spacing-md);border:1px solid var(--border-color);transition:all .2s ease}.session-card:hover{border-color:var(--primary-light);background-color:#fff}.session-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--spacing-sm)}.session-date{font-size:.875rem;color:var(--text-medium);font-weight:500}.session-time{font-size:.75rem;color:var(--text-light);background-color:var(--card-bg);padding:.125rem .5rem;border-radius:var(--radius-sm)}.session-details{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--spacing-sm);margin-bottom:var(--spacing-md)}.session-venue{grid-column:span 2;font-size:.875rem;color:var(--text-medium);display:flex;align-items:center;gap:.25rem}.session-venue:before{content:"📍";font-size:.75rem}.comparison-layout{display:grid;grid-template-columns:250px 1fr;gap:var(--spacing-xl);height:100%}.comparison-sidebar{border-right:1px solid var(--border-color);padding-right:var(--spacing-lg)}.comparison-main{overflow-y:auto}.comparison-tabs{display:flex;flex-direction:column;gap:var(--spacing-xs)}.comparison-tab{padding:var(--spacing-sm) var(--spacing-md);border-radius:var(--radius-md);border:none;background:none;text-align:left;cursor:pointer;color:var(--text-medium);font-weight:500;transition:all .2s ease;display:flex;align-items:center;gap:var(--spacing-sm)}.comparison-tab:hover{background-color:var(--light-bg);color:var(--text-dark)}.comparison-tab.active{background-color:var(--primary-light);color:#fff}.progress-summary{background:linear-gradient(135deg,var(--primary-color),var(--primary-light));border-radius:var(--radius-lg);padding:var(--spacing-xl);color:#fff;margin-bottom:var(--spacing-xl);position:relative;overflow:hidden}.progress-summary:before{content:"";position:absolute;top:0;right:0;width:200px;height:200px;background:#ffffff1a;border-radius:50%;transform:translate(30%,-30%)}.progress-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--spacing-lg)}.progress-title{font-size:1.25rem;font-weight:600}.progress-score{background-color:#fff3;padding:var(--spacing-sm) var(--spacing-lg);border-radius:var(--radius-md);font-size:1.5rem;font-weight:700}.progress-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--spacing-lg)}.stat-card{text-align:center}.stat-value{font-size:2rem;font-weight:700;margin-bottom:var(--spacing-xs)}.stat-label{font-size:.875rem;opacity:.9}.metrics-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--spacing-lg);margin-bottom:var(--spacing-xl)}.metric-card{background:var(--card-bg);border-radius:var(--radius-lg);padding:var(--spacing-lg);border:1px solid var(--border-color)}.metric-header{display:flex;align-items:center;gap:var(--spacing-sm);margin-bottom:var(--spacing-md)}.metric-icon{width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;font-size:1.25rem}.metric-icon.engagement{background-color:#10b981}.metric-icon.focus{background-color:#3b82f6}.metric-icon.attention{background-color:#8b5cf6}.metric-icon.progress{background-color:#f59e0b}.metric-title{font-size:1rem;font-weight:600;color:var(--text-dark)}.metric-value{font-size:1.75rem;font-weight:700;color:var(--text-dark);margin-bottom:var(--spacing-xs)}.metric-change{display:flex;align-items:center;gap:var(--spacing-xs);font-size:.875rem;font-weight:500}.metric-change.positive{color:#10b981}.metric-change.negative{color:#ef4444}.chart-container{background:var(--card-bg);border-radius:var(--radius-lg);padding:var(--spacing-xl);border:1px solid var(--border-color);margin-bottom:var(--spacing-xl)}.chart-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--spacing-lg)}.chart-title{font-size:1.125rem;font-weight:600;color:var(--text-dark)}.chart-legend{display:flex;gap:var(--spacing-lg)}.legend-item{display:flex;align-items:center;gap:var(--spacing-xs);font-size:.875rem;color:var(--text-medium)}.legend-color{width:12px;height:12px;border-radius:2px}.chart-grid{display:grid;grid-template-columns:60px 1fr;height:300px;gap:var(--spacing-md)}.chart-y-axis{display:flex;flex-direction:column;justify-content:space-between;padding-right:var(--spacing-md);border-right:1px solid 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