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th{text-align:left;padding:var(--spacing-md);background:var(--bg-tertiary);color:var(--text-secondary);font-size:var(--font-xs);font-weight:var(--font-semibold);text-transform:uppercase;letter-spacing:.5px;border-bottom:1px solid var(--border-color)}.mock-tests-table td{padding:var(--spacing-md);border-bottom:1px solid var(--border-color);font-size:var(--font-sm);color:var(--text-primary)}.mock-tests-table tbody tr:last-child td{border-bottom:none}.test-title{font-weight:var(--font-medium)}.test-desc{font-size:var(--font-xs);color:var(--text-tertiary);margin-top:2px}.subject-badges{display:flex;gap:var(--spacing-xs);flex-wrap:wrap}.subject-badge{font-size:10px;padding:2px 8px;border-radius:var(--radius-full);background:var(--color-primary-light);color:var(--color-primary);font-weight:var(--font-medium);text-transform:capitalize}.status-badge{display:inline-block;padding:var(--spacing-xs) var(--spacing-sm);border-radius:var(--radius-full);font-size:var(--font-xs);font-weight:var(--font-semibold);text-transform:capitalize}.status-draft{background:var(--color-warning-bg);color:var(--color-warning)}.status-published{background:var(--color-success-bg);color:var(--color-success)}.date-cell{color:var(--text-secondary);white-space:nowrap}.empty-state{text-align:center;padding:var(--spacing-2xl);color:var(--text-secondary)}.empty-state p{margin-bottom:var(--spacing-lg)}.question-picker{display:flex;flex-direction:column;gap:var(--spacing-md)}.qp-filters{display:flex;gap:var(--spacing-sm);flex-wrap:wrap;align-items:stretch}.qp-filters select,.qp-search{padding:var(--spacing-sm) var(--spacing-md);border:1px solid var(--border-color);border-radius:var(--radius-md);font-size:var(--font-sm);background:var(--bg-primary);color:var(--text-primary);box-sizing:border-box}.qp-filters select{flex:1;min-width:120px;max-width:200px}.qp-filters select:disabled,.qp-select-disabled{background:var(--bg-tertiary);color:var(--text-tertiary);cursor:not-allowed}.qp-search{flex:1;min-width:200px}.qp-panels{display:grid;grid-template-columns:1fr 1fr;gap:var(--spacing-md)}.qp-panel{border:1px solid var(--border-color);border-radius:var(--radius-lg);background:var(--bg-primary);display:flex;flex-direction:column}.qp-panel-header{display:flex;justify-content:space-between;align-items:center;padding:var(--spacing-sm) var(--spacing-md);border-bottom:1px solid var(--border-color);background:var(--bg-tertiary);border-radius:var(--radius-lg) var(--radius-lg) 0 0}.qp-panel-header h4{font-size:var(--font-sm);font-weight:var(--font-semibold);color:var(--text-primary);margin:0}.qp-btn-link{background:none;border:none;color:var(--color-primary);font-size:var(--font-xs);cursor:pointer;padding:0}.qp-btn-link:hover{text-decoration:underline}.qp-list{flex:1;overflow-y:auto;max-height:400px;padding:var(--spacing-xs)}.qp-item{padding:var(--spacing-sm) var(--spacing-md);border-radius:var(--radius-md);cursor:pointer;transition:background var(--transition-fast);display:flex;flex-direction:column;gap:4px}.qp-item:hover{background:var(--bg-tertiary)}.qp-item-selected{flex-direction:row;align-items:center;gap:var(--spacing-sm)}.qp-item-num{font-size:var(--font-xs);color:var(--text-tertiary);min-width:24px}.qp-item-text{font-size:var(--font-sm);color:var(--text-primary);flex:1}.qp-item-meta{display:flex;gap:var(--spacing-xs)}.qp-badge{font-size:10px;padding:2px 6px;border-radius:var(--radius-full);background:var(--color-primary-light);color:var(--color-primary);font-weight:var(--font-medium);text-transform:capitalize}.qp-badge-muted{font-size:10px;padding:2px 6px;border-radius:var(--radius-full);background:var(--bg-tertiary);color:var(--text-secondary)}.qp-badge-exam{font-size:10px;padding:2px 6px;border-radius:var(--radius-full);background:var(--color-info-bg, #dbeafe);color:var(--color-info, #2563eb);font-weight:var(--font-medium)}.qp-remove{background:none;border:none;color:var(--text-tertiary);font-size:var(--font-sm);cursor:pointer;padding:2px 6px;border-radius:var(--radius-sm)}.qp-remove:hover{background:var(--color-error-bg);color:var(--color-error)}.qp-empty{color:var(--text-tertiary);font-size:var(--font-sm);text-align:center;padding:var(--spacing-xl);font-style:italic}.qp-total-hint{font-size:var(--font-xs);color:var(--text-tertiary);font-weight:400}.qp-refresh-btn{padding:var(--spacing-sm) var(--spacing-md);border:1px solid var(--color-primary);border-radius:var(--radius-md);background:var(--color-primary);color:#fff;font-size:var(--font-sm);font-weight:var(--font-medium);cursor:pointer;white-space:nowrap}.qp-refresh-btn:hover{opacity:.9}.qp-refresh-btn:disabled{opacity:.5;cursor:not-allowed}.mock-test-create h1{margin:0 0 var(--spacing-lg);font-size:var(--font-2xl);font-weight:var(--font-bold);color:var(--text-primary)}.form-group{margin-bottom:var(--spacing-md)}.form-group label{display:block;font-size:var(--font-sm);font-weight:var(--font-semibold);color:var(--text-secondary);margin-bottom:var(--spacing-xs)}.form-group input,.form-group textarea{width:100%;padding:var(--spacing-sm) var(--spacing-md);border:1px solid var(--border-color);border-radius:var(--radius-md);font-size:var(--font-sm);background:var(--bg-primary);color:var(--text-primary)}.form-group textarea{resize:vertical}.form-section{margin:var(--spacing-lg) 0}.form-section h3{font-size:var(--font-lg);font-weight:var(--font-semibold);color:var(--text-primary);margin-bottom:var(--spacing-md);padding-bottom:var(--spacing-sm);border-bottom:1px solid var(--border-color)}.config-grid{display:flex;flex-direction:column;gap:var(--spacing-sm)}.config-toggle{display:flex;align-items:center;gap:var(--spacing-sm);font-size:var(--font-sm);color:var(--text-primary);cursor:pointer}.config-toggle input[type=checkbox]{width:16px;height:16px;accent-color:var(--color-primary)}.config-input{display:flex;align-items:center;gap:var(--spacing-sm);margin-top:var(--spacing-xs)}.config-input label{font-size:var(--font-sm);color:var(--text-primary);white-space:nowrap}.config-input input{width:100px;padding:var(--spacing-xs) var(--spacing-sm);border:1px solid var(--border-color);border-radius:var(--radius-md);font-size:var(--font-sm);background:var(--bg-primary);color:var(--text-primary)}.form-error{color:var(--color-error);background:var(--color-error-bg);padding:var(--spacing-sm) var(--spacing-md);border-radius:var(--radius-md);font-size:var(--font-sm);margin-bottom:var(--spacing-md)}.form-actions{display:flex;justify-content:flex-end;gap:var(--spacing-sm);margin-top:var(--spacing-lg);padding-top:var(--spacing-lg);border-top:1px solid var(--border-color)}.btn-secondary{padding:var(--spacing-sm) var(--spacing-lg);background:var(--bg-tertiary);color:var(--text-secondary);border:1px solid var(--border-color);border-radius:var(--radius-md);font-size:var(--font-sm);font-weight:var(--font-medium);cursor:pointer;transition:background var(--transition-fast)}.btn-secondary:hover{background:var(--bg-hover)}.qp-preview{width:640px;max-height:85vh}.preview-meta{display:flex;gap:var(--spacing-sm);margin-bottom:var(--spacing-md);flex-wrap:wrap}.preview-badge{font-size:var(--font-xs);padding:2px 8px;border-radius:var(--radius-full);background:var(--color-primary-light);color:var(--color-primary);font-weight:var(--font-medium);text-transform:capitalize}.preview-badge-muted{font-size:var(--font-xs);padding:2px 8px;border-radius:var(--radius-full);background:var(--bg-tertiary);color:var(--text-secondary)}.preview-text{font-size:var(--font-md);color:var(--text-primary);line-height:1.6;margin-bottom:var(--spacing-md);white-space:pre-wrap}.preview-image{max-width:100%;border-radius:var(--radius-md);margin:var(--spacing-sm) 0}.preview-options{display:flex;flex-direction:column;gap:var(--spacing-sm);margin-bottom:var(--spacing-md)}.preview-option{display:flex;align-items:flex-start;gap:var(--spacing-sm);padding:var(--spacing-sm) var(--spacing-md);background:var(--bg-tertiary);border-radius:var(--radius-md);font-size:var(--font-sm)}.option-label{font-weight:var(--font-semibold);color:var(--color-primary);min-width:20px}.option-image{max-width:200px;border-radius:var(--radius-sm)}.preview-answer{padding:var(--spacing-md);background:var(--color-success-bg);border-radius:var(--radius-md);font-size:var(--font-sm);color:var(--color-success);margin-bottom:var(--spacing-md)}.preview-solution{margin-top:var(--spacing-md);font-size:var(--font-sm);color:var(--text-secondary)}.mock-test-detail h1{margin:var(--spacing-xs) 0 0;font-size:var(--font-2xl);font-weight:var(--font-bold);color:var(--text-primary)}.btn-back{background:none;border:none;color:var(--color-primary);font-size:var(--font-sm);cursor:pointer;padding:0}.btn-back:hover{text-decoration:underline}.detail-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:var(--spacing-lg)}.detail-desc{color:var(--text-secondary);font-size:var(--font-sm);margin-top:var(--spacing-xs)}.detail-actions{display:flex;gap:var(--spacing-sm);flex-shrink:0}.btn-danger{padding:var(--spacing-sm) var(--spacing-lg);background:var(--color-error-bg);color:var(--color-error);border:1px solid var(--color-error);border-radius:var(--radius-md);font-size:var(--font-sm);font-weight:var(--font-medium);cursor:pointer}.btn-danger:hover{background:var(--color-error);color:#fff}.btn-icon-danger{background:none;border:none;color:var(--text-tertiary);font-size:var(--font-sm);cursor:pointer;padding:2px 6px;border-radius:var(--radius-sm)}.btn-icon-danger:hover{background:var(--color-error-bg);color:var(--color-error)}.detail-meta{display:flex;gap:var(--spacing-xl);padding:var(--spacing-md) var(--spacing-lg);background:var(--bg-primary);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);margin-bottom:var(--spacing-lg)}.meta-item{display:flex;flex-direction:column;gap:2px}.meta-label{font-size:var(--font-xs);color:var(--text-tertiary);text-transform:uppercase;letter-spacing:.5px;font-weight:var(--font-semibold)}.meta-item>span:last-child{font-size:var(--font-sm);font-weight:var(--font-medium);color:var(--text-primary)}.detail-section{margin-top:var(--spacing-lg)}.detail-section h2{font-size:var(--font-lg);font-weight:var(--font-semibold);color:var(--text-primary);margin:0 0 var(--spacing-md)}.section-header{display:flex;justify-content:space-between;align-items:center}.section-subtitle{color:var(--text-secondary);font-size:var(--font-sm)}.btn-link{background:none;border:none;color:var(--color-primary);font-size:var(--font-sm);cursor:pointer;padding:0}.btn-link:hover{text-decoration:underline}.questions-table{width:100%;background:var(--bg-primary);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);border-collapse:collapse}.questions-table th{text-align:left;padding:var(--spacing-sm) var(--spacing-md);background:var(--bg-tertiary);color:var(--text-secondary);font-size:var(--font-xs);font-weight:var(--font-semibold);text-transform:uppercase;border-bottom:1px solid var(--border-color)}.questions-table td{padding:var(--spacing-sm) var(--spacing-md);border-bottom:1px solid var(--border-color);font-size:var(--font-sm);color:var(--text-primary)}.questions-table tbody tr:last-child td{border-bottom:none}.qtext-btn{background:none;border:none;color:var(--text-primary);font-size:var(--font-sm);cursor:pointer;text-align:left;padding:0}.qtext-btn:hover{color:var(--color-primary)}.text-muted{color:var(--text-tertiary);font-size:var(--font-xs)}.detail-stats-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--spacing-sm);margin-bottom:var(--spacing-md)}.detail-stat-card{background:var(--bg-primary);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);padding:var(--spacing-sm) var(--spacing-md);text-align:center}.detail-stat-value{font-size:var(--font-xl);font-weight:var(--font-bold);color:var(--text-primary)}.detail-stat-label{font-size:var(--font-xs);color:var(--text-secondary);text-transform:uppercase;letter-spacing:.5px;margin-top:2px}.detail-stat-success .detail-stat-value{color:var(--color-success)}.detail-stat-warning .detail-stat-value{color:var(--color-warning)}.detail-stat-primary .detail-stat-value{color:var(--color-primary)}.students-status-table{width:100%;background:var(--bg-primary);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);border-collapse:collapse}.students-status-table th{text-align:left;padding:var(--spacing-sm) var(--spacing-md);background:var(--bg-tertiary);color:var(--text-secondary);font-size:var(--font-xs);font-weight:var(--font-semibold);text-transform:uppercase;letter-spacing:.5px;border-bottom:1px solid var(--border-color)}.students-status-table td{padding:var(--spacing-sm) var(--spacing-md);border-bottom:1px solid var(--border-color);font-size:var(--font-sm);color:var(--text-primary)}.students-status-table tbody tr:last-child td{border-bottom:none}.student-name-cell{font-weight:var(--font-medium)}.result-status{display:inline-block;padding:var(--spacing-xs) var(--spacing-sm);border-radius:var(--radius-full);font-size:var(--font-xs);font-weight:var(--font-semibold)}.clickable-row{cursor:pointer;transition:background-color .15s ease}.clickable-row:hover{background:var(--bg-tertiary)}.chevron-cell{width:30px;text-align:center}.row-chevron{color:var(--text-tertiary);font-size:var(--font-sm)}.clickable-row:hover .row-chevron{color:var(--color-primary)}.collapsible-header{cursor:pointer;-webkit-user-select:none;user-select:none;display:flex;align-items:center;gap:var(--spacing-sm)}.collapsible-header:hover{color:var(--color-primary)}.collapse-chevron{font-size:var(--font-xs);transition:transform .2s ease;display:inline-block}.collapse-chevron.expanded{transform:rotate(90deg)}.results-page h1{margin:var(--spacing-xs) 0 0;font-size:var(--font-2xl);font-weight:var(--font-bold);color:var(--text-primary)}.results-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:var(--spacing-lg)}.results-actions{display:flex;gap:var(--spacing-sm)}.stats-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:var(--spacing-md);margin-bottom:var(--spacing-lg)}.stat-card{background:var(--bg-primary);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);padding:var(--spacing-md) var(--spacing-lg);text-align:center}.stat-value{font-size:var(--font-2xl);font-weight:var(--font-bold);color:var(--text-primary)}.stat-label{font-size:var(--font-xs);color:var(--text-secondary);text-transform:uppercase;letter-spacing:.5px;margin-top:2px}.stat-success .stat-value{color:var(--color-success)}.stat-warning .stat-value{color:var(--color-warning)}.stat-primary .stat-value{color:var(--color-primary)}.results-section{margin-top:var(--spacing-lg)}.results-section h2{font-size:var(--font-lg);font-weight:var(--font-semibold);color:var(--text-primary);margin:0 0 var(--spacing-md)}.results-table{width:100%;background:var(--bg-primary);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);border-collapse:collapse}.results-table th{text-align:left;padding:var(--spacing-sm) var(--spacing-md);background:var(--bg-tertiary);color:var(--text-secondary);font-size:var(--font-xs);font-weight:var(--font-semibold);text-transform:uppercase;letter-spacing:.5px;border-bottom:1px solid var(--border-color)}.results-table td{padding:var(--spacing-sm) var(--spacing-md);border-bottom:1px solid var(--border-color);font-size:var(--font-sm);color:var(--text-primary)}.results-table tbody tr:last-child td{border-bottom:none}.student-name{font-weight:var(--font-medium)}.result-status{display:inline-block;padding:var(--spacing-xs) var(--spacing-sm);border-radius:var(--radius-full);font-size:var(--font-xs);font-weight:var(--font-semibold);text-transform:capitalize}.result-completed{background:var(--color-success-bg);color:var(--color-success)}.result-in_progress{background:var(--color-warning-bg);color:var(--color-warning)}.result-not_started{background:var(--bg-tertiary);color:var(--text-tertiary)}.text-mono{font-family:monospace;font-size:var(--font-xs);color:var(--text-secondary)}.percent-bar{display:flex;align-items:center;gap:var(--spacing-sm)}.percent-fill{height:6px;min-width:4px;max-width:80px;background:var(--color-primary);border-radius:3px}.percent-bar span{font-size:var(--font-xs);color:var(--text-secondary)}.question-text-cell{max-width:300px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.question-text-cell-wide{max-width:400px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.difficulty-badge{display:inline-block;padding:2px 8px;font-size:var(--font-xs);font-weight:var(--font-medium);border-radius:var(--radius-full);text-transform:capitalize}.diff-easy{background:var(--color-success-bg);color:var(--color-success)}.diff-medium{background:var(--color-warning-bg);color:var(--color-warning)}.diff-hard{background:var(--color-error-bg);color:var(--color-error)}.score-high{color:var(--color-success);font-weight:var(--font-semibold)}.score-mid{color:var(--color-warning);font-weight:var(--font-semibold)}.score-low{color:var(--color-error);font-weight:var(--font-semibold)}.text-muted{color:var(--text-tertiary);font-size:var(--font-sm)}.subject-badge{display:inline-block;padding:2px 8px;font-size:var(--font-xs);font-weight:var(--font-medium);color:var(--color-primary);background:var(--color-primary-light);border-radius:var(--radius-full);text-transform:capitalize}.ssr-page{max-width:900px;margin:0 auto}.ssr-header{margin-bottom:var(--spacing-lg)}.ssr-header h1{margin:var(--spacing-xs) 0 0;font-size:var(--font-2xl);font-weight:var(--font-bold);color:var(--text-primary)}.ssr-nav{display:flex;justify-content:space-between;align-items:center;padding:var(--spacing-sm) var(--spacing-md);background:var(--bg-primary);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);margin-bottom:var(--spacing-lg)}.ssr-counter{font-size:var(--font-sm);font-weight:var(--font-semibold);color:var(--text-secondary)}.ssr-nav-buttons{display:flex;gap:var(--spacing-sm)}.ssr-skipped{background:var(--bg-primary);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);padding:var(--spacing-xl);text-align:center}.ssr-skipped h3{color:var(--text-tertiary);font-size:var(--font-lg);margin:0 0 var(--spacing-md)}.ssr-skipped-text{color:var(--text-secondary);font-size:var(--font-sm);max-width:600px;margin:0 auto}.ssr-page .adv-page>.adv-back-btn{display:none}.teacher-settings{max-width:720px}.teacher-settings h1{font-size:22px;margin:0 0 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