:root{--color-primary: #4f6ef7;--color-primary-dark: #3b55d4;--color-primary-light: #e8ecff;--color-danger: #e74c3c;--color-danger-dark: #c0392b;--color-success: #27ae60;--color-warning: #f39c12;--color-bg: #f4f6fb;--color-surface: #ffffff;--color-border: #e0e4ef;--color-text: #1a1d2e;--color-text-muted: #6b7280;--color-sidebar-bg: #1a1d2e;--color-sidebar-text: #c8cfe8;--color-sidebar-active: #4f6ef7;--radius: 8px;--radius-lg: 12px;--shadow: 0 1px 4px rgba(0, 0, 0, .08);--shadow-md: 0 4px 16px rgba(0, 0, 0, .12);--transition: .15s ease;--sidebar-width: 220px;--font: "Segoe UI", system-ui, sans-serif}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body,#root{height:100%}body{font-family:var(--font);background:var(--color-bg);color:var(--color-text);font-size:14px;line-height:1.5}.app-layout{display:flex;height:100vh;overflow:hidden}.app-main{flex:1;overflow-y:auto;padding:32px;background:var(--color-bg)}.loading-screen{display:flex;align-items:center;justify-content:center;height:100vh;background:var(--color-bg)}.sidebar{width:var(--sidebar-width);background:var(--color-sidebar-bg);display:flex;flex-direction:column;flex-shrink:0;overflow-y:auto}.sidebar-logo{padding:24px 20px 16px;font-size:18px;font-weight:700;color:#fff;letter-spacing:-.3px}.sidebar-logo span{color:var(--color-primary)}.sidebar-nav{flex:1;padding:8px 0}.sidebar-section-label{padding:16px 20px 4px;font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:1px;color:#4b5568}.nav-item{display:flex;align-items:center;gap:10px;padding:9px 20px;color:var(--color-sidebar-text);cursor:pointer;border:none;background:none;width:100%;text-align:left;font-size:14px;font-family:var(--font);border-radius:0;transition:background var(--transition),color var(--transition)}.nav-item:hover{background:#ffffff12;color:#fff}.nav-item.active{background:var(--color-primary);color:#fff}.sidebar-footer{padding:16px 20px;border-top:1px solid rgba(255,255,255,.08)}.sidebar-user-name{font-size:13px;color:#fff;font-weight:600}.sidebar-user-email{font-size:11px;color:#6b7280;margin-bottom:10px}.card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:24px;box-shadow:var(--shadow)}.card-title{font-size:18px;font-weight:700;margin-bottom:4px}.card-subtitle{color:var(--color-text-muted);font-size:13px;margin-bottom:16px}.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;border-radius:var(--radius);border:1px solid transparent;font-size:14px;font-family:var(--font);font-weight:500;cursor:pointer;transition:all var(--transition);white-space:nowrap}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--color-primary);color:#fff}.btn-primary:hover:not(:disabled){background:var(--color-primary-dark)}.btn-secondary{background:var(--color-surface);color:var(--color-text);border-color:var(--color-border)}.btn-secondary:hover:not(:disabled){background:var(--color-bg)}.btn-danger{background:var(--color-danger);color:#fff}.btn-danger:hover:not(:disabled){background:var(--color-danger-dark)}.btn-ghost{background:transparent;color:var(--color-primary);border-color:transparent;padding:6px 10px}.btn-ghost:hover:not(:disabled){background:var(--color-primary-light)}.btn-sm{padding:5px 10px;font-size:12px}.form-group{margin-bottom:16px}.form-label{display:block;font-size:13px;font-weight:600;margin-bottom:6px;color:var(--color-text)}.form-input,.form-select,.form-textarea{width:100%;padding:9px 12px;border:1px solid var(--color-border);border-radius:var(--radius);font-size:14px;font-family:var(--font);color:var(--color-text);background:var(--color-surface);transition:border-color var(--transition);outline:none}.form-input:focus,.form-select:focus,.form-textarea:focus{border-color:var(--color-primary);box-shadow:0 0 0 3px var(--color-primary-light)}.form-textarea{resize:vertical;min-height:80px}.form-error{color:var(--color-danger);font-size:12px;margin-top:4px}.form-hint{color:var(--color-text-muted);font-size:12px;margin-top:4px}.table-wrap{overflow-x:auto}table{width:100%;border-collapse:collapse}thead th{text-align:left;padding:10px 12px;font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.5px;color:var(--color-text-muted);border-bottom:2px solid var(--color-border);white-space:nowrap}tbody td{padding:12px;border-bottom:1px solid var(--color-border);font-size:14px}tbody tr:hover{background:var(--color-bg)}tbody tr:last-child td{border-bottom:none}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000073;display:flex;align-items:center;justify-content:center;z-index:1000;padding:24px}.modal{background:var(--color-surface);border-radius:var(--radius-lg);box-shadow:var(--shadow-md);width:100%;max-width:520px;max-height:90vh;overflow-y:auto;padding:28px}.modal-title{font-size:18px;font-weight:700;margin-bottom:20px}.modal-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:24px}.page-header{display:flex;align-items:center;gap:16px;margin-bottom:24px}.page-title{font-size:24px;font-weight:700;flex:1}.page-subtitle{color:var(--color-text-muted);font-size:14px;margin-top:2px}.spinner{display:inline-block;width:20px;height:20px;border:2px solid var(--color-border);border-top-color:var(--color-primary);border-radius:50%;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.spinner-lg{width:40px;height:40px;border-width:3px}.loading-center{display:flex;align-items:center;justify-content:center;padding:60px 0}.badge{display:inline-block;padding:2px 8px;border-radius:999px;font-size:11px;font-weight:600}.badge-green{background:#d1fae5;color:#065f46}.badge-blue{background:var(--color-primary-light);color:var(--color-primary-dark)}.badge-red{background:#fee2e2;color:#991b1b}.badge-gray{background:#f3f4f6;color:#374151}.badge-yellow{background:#fef3c7;color:#92400e}.alert{padding:12px 16px;border-radius:var(--radius);font-size:13px;margin-bottom:16px}.alert-error{background:#fee2e2;color:#991b1b;border:1px solid #fca5a5}.alert-success{background:#d1fae5;color:#065f46;border:1px solid #6ee7b7}.alert-info{background:var(--color-primary-light);color:var(--color-primary-dark);border:1px solid #a5b4fc}.auth-screen{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--color-bg)}.auth-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:40px;width:100%;max-width:400px;box-shadow:var(--shadow-md)}.auth-title{font-size:26px;font-weight:800;text-align:center;margin-bottom:6px}.auth-subtitle{text-align:center;color:var(--color-text-muted);font-size:14px;margin-bottom:28px}.survey-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px}.survey-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:20px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:10px}.survey-card-name{font-size:16px;font-weight:700}.survey-card-meta{color:var(--color-text-muted);font-size:12px}.survey-card-actions{display:flex;gap:8px;margin-top:4px;flex-wrap:wrap}.heatmap-container{margin-top:16px}.heatmap-title{font-size:13px;font-weight:600;margin-bottom:8px;color:var(--color-text-muted)}.heatmap-grid{display:grid;gap:3px;grid-template-columns:repeat(auto-fill,12px)}.heatmap-cell{width:12px;height:12px;border-radius:2px;background:#e5e7eb;position:relative;cursor:default}.heatmap-cell.filled{background:var(--color-primary)}.heatmap-cell.missed{background:#fca5a5}.heatmap-cell.future{background:#e5e7eb;border:1px dashed #9ca3af}.heatmap-cell.before-start{background:#f3f4f6;opacity:.35}.heatmap-cell:hover .heatmap-tooltip{display:block}.heatmap-tooltip{display:none;position:absolute;bottom:16px;left:50%;transform:translate(-50%);background:#1a1d2e;color:#fff;font-size:11px;padding:4px 8px;border-radius:4px;white-space:nowrap;z-index:10;pointer-events:none}.question-block{margin-bottom:28px}.question-text{font-size:15px;font-weight:600;margin-bottom:12px}.radio-group,.checkbox-group{display:flex;flex-direction:column;gap:8px}.radio-option,.checkbox-option{display:flex;align-items:center;gap:10px;cursor:pointer;font-size:14px}.radio-option input,.checkbox-option input{cursor:pointer}.rating-row{display:flex;gap:8px;flex-wrap:wrap}.rating-btn{display:flex;flex-direction:column;align-items:center;gap:4px;padding:10px 14px;border:2px solid var(--color-border);border-radius:var(--radius);cursor:pointer;background:var(--color-surface);transition:all var(--transition);font-family:var(--font)}.rating-btn:hover{border-color:var(--color-primary);background:var(--color-primary-light)}.rating-btn.selected{border-color:var(--color-primary);background:var(--color-primary);color:#fff}.rating-btn .rating-num{font-size:18px;font-weight:700}.rating-btn .rating-label{font-size:10px;text-align:center;max-width:70px}.flex-row{display:flex;align-items:center;gap:12px}.flex-wrap{flex-wrap:wrap}.mt-8{margin-top:8px}.mt-16{margin-top:16px}.mt-24{margin-top:24px}.mb-8{margin-bottom:8px}.mb-16{margin-bottom:16px}.text-muted{color:var(--color-text-muted)}.text-sm{font-size:12px}.divider{height:1px;background:var(--color-border);margin:20px 0}.options-list{display:flex;flex-direction:column;gap:8px;margin-top:8px}.option-row{display:flex;align-items:center;gap:8px}.empty-state{text-align:center;padding:60px 20px;color:var(--color-text-muted)}.empty-state-icon{font-size:40px;margin-bottom:12px}