:root{--bg: #f0f2f5;--bg-card: #ffffff;--bg-input: #f5f7fa;--bg-hover: #e8ecf1;--border: #e0e4ea;--border-focus: #6366f1;--text: #1a1d23;--text-muted: #5f6775;--text-dim: #8b92a0;--primary: #6366f1;--primary-hover: #4f46e5;--primary-dim: rgba(99, 102, 241, .1);--success: #22c55e;--success-dim: rgba(34, 197, 94, .1);--warning: #eab308;--warning-dim: rgba(234, 179, 8, .1);--danger: #ef4444;--danger-dim: rgba(239, 68, 68, .1);--accent: #8b5cf6;--accent-dim: rgba(139, 92, 246, .1);--shadow: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);--shadow-lg: 0 4px 12px rgba(0,0,0,.08), 0 2px 6px rgba(0,0,0,.06);--blur: blur(20px)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:var(--bg);color:var(--text);line-height:1.6;min-height:100vh}#root{min-height:100vh}.auth-page{display:flex;align-items:center;justify-content:center;min-height:100vh;padding:20px;background:linear-gradient(135deg,#e0e7ff,#f0f2f5,#ede9fe)}.auth-card{background:#ffffffd9;backdrop-filter:var(--blur);-webkit-backdrop-filter:var(--blur);border:1px solid rgba(255,255,255,.6);border-radius:20px;padding:40px;width:100%;max-width:420px;box-shadow:var(--shadow-lg)}.auth-card h1{font-size:28px;font-weight:700;margin-bottom:4px;background:linear-gradient(135deg,var(--primary),var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent}.auth-card .subtitle{color:var(--text-muted);margin-bottom:32px;font-size:14px}.form-group{margin-bottom:20px}.form-group label{display:block;font-size:13px;font-weight:500;color:var(--text-muted);margin-bottom:6px}.form-group input{width:100%;padding:12px 16px;background:var(--bg-input);border:1px solid var(--border);border-radius:10px;color:var(--text);font-size:15px;transition:border-color .2s;outline:none}.form-group input:focus{border-color:var(--border-focus);box-shadow:0 0 0 3px var(--primary-dim)}.form-group input::placeholder{color:var(--text-dim)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 24px;border-radius:10px;font-size:14px;font-weight:600;cursor:pointer;border:none;transition:all .2s;width:100%}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-hover);box-shadow:0 2px 8px #6366f14d}.btn-primary:disabled{opacity:.5;cursor:not-allowed;box-shadow:none}.btn-secondary{background:var(--bg-input);color:var(--text);border:1px solid var(--border)}.btn-secondary:hover{background:var(--bg-hover);border-color:var(--primary)}.btn-success{background:var(--success);color:#fff}.btn-success:hover{background:#16a34a;box-shadow:0 2px 8px #22c55e4d}.btn-danger{background:var(--danger-dim);color:var(--danger);border:1px solid transparent}.btn-danger:hover{background:var(--danger);color:#fff}.btn-sm{padding:8px 16px;font-size:13px;width:auto}.error-text{color:var(--danger);font-size:13px;margin-top:8px}.link-text{text-align:center;margin-top:20px;font-size:14px;color:var(--text-muted)}.link-text a{color:var(--primary);text-decoration:none;font-weight:500}.link-text a:hover{text-decoration:underline}.app-layout{display:flex;min-height:100vh}.sidebar{width:260px;background:#ffffffbf;backdrop-filter:var(--blur);-webkit-backdrop-filter:var(--blur);border-right:1px solid var(--border);padding:24px 16px;display:flex;flex-direction:column;position:fixed;top:0;left:0;bottom:0;z-index:10}.sidebar-brand{font-size:20px;font-weight:700;background:linear-gradient(135deg,var(--primary),var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;margin-bottom:32px;padding:0 8px}.sidebar-nav{flex:1}.sidebar-link{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:8px;color:var(--text-muted);text-decoration:none;font-size:14px;font-weight:500;transition:all .15s;margin-bottom:4px}.sidebar-link:hover{background:var(--bg-hover);color:var(--text)}.sidebar-link.active{background:var(--primary-dim);color:var(--primary)}.sidebar-footer{padding-top:16px;border-top:1px solid var(--border)}.sidebar-user{display:flex;align-items:center;gap:10px;padding:8px;margin-bottom:8px}.sidebar-user .avatar{width:36px;height:36px;border-radius:10px;background:var(--primary-dim);color:var(--primary);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px}.sidebar-user .username{font-size:14px;font-weight:600}.main-content{flex:1;margin-left:260px;padding:32px;max-width:calc(100vw - 260px)}.page-header{margin-bottom:32px}.page-header h2{font-size:24px;font-weight:700;margin-bottom:4px}.page-header p{color:var(--text-muted);font-size:14px}.card{background:#ffffffd9;backdrop-filter:var(--blur);-webkit-backdrop-filter:var(--blur);border:1px solid rgba(255,255,255,.6);border-radius:12px;padding:24px;box-shadow:var(--shadow)}.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:16px}.project-card{background:#ffffffd9;backdrop-filter:var(--blur);-webkit-backdrop-filter:var(--blur);border:1px solid rgba(255,255,255,.6);border-radius:12px;padding:24px;cursor:pointer;transition:all .2s;text-decoration:none;color:inherit;display:block;box-shadow:var(--shadow)}.project-card:hover{border-color:var(--primary);transform:translateY(-2px);box-shadow:var(--shadow-lg)}.project-card h3{font-size:16px;font-weight:600;margin-bottom:8px}.project-card .desc{color:var(--text-muted);font-size:13px;margin-bottom:16px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.project-card .meta{display:flex;gap:16px;font-size:12px;color:var(--text-dim)}.project-card .meta span{display:flex;align-items:center;gap:4px}.upload-zone{border:2px dashed var(--border);border-radius:12px;padding:48px 24px;text-align:center;cursor:pointer;transition:all .2s;background:var(--bg-input)}.upload-zone:hover,.upload-zone.active{border-color:var(--primary);background:var(--primary-dim)}.upload-zone .icon{color:var(--text-dim);margin-bottom:12px}.upload-zone p{color:var(--text-muted);font-size:14px}.upload-zone .hint{color:var(--text-dim);font-size:12px;margin-top:4px}.page-tabs{display:flex;gap:8px;margin-bottom:24px;flex-wrap:wrap}.page-tab{display:flex;align-items:center;gap:6px;padding:10px 16px;border-radius:10px;border:1.5px solid var(--border);background:var(--bg-card);cursor:pointer;transition:all .2s;font-size:13px;font-weight:600;color:var(--text)}.page-tab:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-dim)}.page-tab.active{background:var(--primary);border-color:var(--primary);color:#fff}.page-tab.completed{border-color:#16a34a;color:#16a34a;background:#22c55e14}.page-tab .status-dot{width:8px;height:8px;border-radius:50%}.page-tab .status-dot.empty{background:var(--text-dim)}.page-tab .status-dot.uploaded{background:var(--warning)}.page-tab .status-dot.completed{background:var(--success)}.respondent-tracker{display:flex;align-items:center;gap:16px;padding:20px 24px;background:#ffffffd9;backdrop-filter:var(--blur);-webkit-backdrop-filter:var(--blur);border:1px solid rgba(255,255,255,.6);border-radius:12px;margin-bottom:24px;box-shadow:var(--shadow)}.respondent-number{font-size:36px;font-weight:800;background:linear-gradient(135deg,var(--primary),var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;min-width:80px}.respondent-info{flex:1}.respondent-info h3{font-size:16px;font-weight:600;margin-bottom:2px}.respondent-info p{font-size:13px;color:var(--text-muted)}.respondent-progress{display:flex;align-items:center;gap:8px}.progress-bar{width:120px;height:6px;background:var(--bg-input);border-radius:3px;overflow:hidden}.progress-bar .fill{height:100%;background:linear-gradient(90deg,var(--primary),var(--accent));border-radius:3px;transition:width .3s ease}.progress-text{font-size:13px;color:var(--text-muted);font-weight:500}.page-preview{position:relative;border-radius:10px;overflow:hidden;border:1px solid var(--border);margin-bottom:16px;box-shadow:var(--shadow)}.page-preview img{width:100%;max-height:400px;object-fit:contain;display:block;background:var(--bg-input)}.page-preview .page-badge{position:absolute;top:8px;left:8px;background:#0009;color:#fff;padding:4px 10px;border-radius:6px;font-size:12px;font-weight:600}.page-preview .delete-btn{position:absolute;top:8px;right:8px;background:#ef4444e6;color:#fff;border:none;border-radius:6px;padding:4px 8px;cursor:pointer;font-size:12px}.data-table{width:100%;border-collapse:collapse;font-size:13px}.data-table th{text-align:left;padding:10px 12px;background:var(--bg-input);color:var(--text-muted);font-weight:600;font-size:12px;text-transform:uppercase;letter-spacing:.5px;border-bottom:1px solid var(--border)}.data-table td{padding:10px 12px;border-bottom:1px solid var(--border);color:var(--text)}.data-table tr:hover td{background:var(--bg-hover)}.confidence-badge{display:inline-flex;align-items:center;padding:2px 8px;border-radius:4px;font-size:11px;font-weight:600}.confidence-badge.high{background:var(--success-dim);color:var(--success)}.confidence-badge.medium{background:var(--warning-dim);color:var(--warning)}.confidence-badge.low{background:var(--danger-dim);color:var(--danger)}.actions-bar{display:flex;gap:12px;margin-bottom:24px;flex-wrap:wrap;align-items:center}.actions-bar .spacer{flex:1}.spinner{display:inline-block;width:20px;height:20px;border:2px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.loading-overlay{display:flex;align-items:center;justify-content:center;gap:12px;padding:48px;color:var(--text-muted)}.empty-state{text-align:center;padding:64px 24px}.empty-state .icon{color:var(--text-dim);margin-bottom:16px}.empty-state h3{font-size:18px;font-weight:600;margin-bottom:8px}.empty-state p{color:var(--text-muted);font-size:14px;margin-bottom:24px}.toast{position:fixed;bottom:24px;right:24px;padding:12px 20px;border-radius:10px;font-size:14px;font-weight:500;z-index:1000;animation:slideUp .3s ease;backdrop-filter:var(--blur);-webkit-backdrop-filter:var(--blur)}.toast.success{background:#22c55ee6;color:#fff}.toast.error{background:#ef4444e6;color:#fff}@keyframes slideUp{0%{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}@media(max-width:768px){.sidebar{display:none}.main-content{margin-left:0;max-width:100vw;padding:16px}.card-grid{grid-template-columns:1fr}.respondent-tracker{flex-direction:column;text-align:center}}