.app{min-height:100vh}.btn-group{display:flex;flex-wrap:wrap;gap:10px;margin-top:1rem}.table-cell-assignments{max-width:200px;font-size:12px}.table-cell-assignments div{border-bottom:1px solid #eee;padding:2px 0}.table-cell-assignments div:last-child{border-bottom:none}.loading-spinner{display:inline-block;width:20px;height:20px;border:3px solid #f3f3f3;border-top:3px solid #667eea;border-radius:50%;animation:spin 1s linear infinite;margin-right:10px}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.status-badge{display:inline-block;padding:4px 8px;border-radius:12px;font-size:12px;font-weight:500;text-transform:uppercase}.status-active{background:#d4edda;color:#155724}.status-pending{background:#fff3cd;color:#856404}.status-completed{background:#d1ecf1;color:#0c5460}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-color:#f5f5f5}.container{max-width:1200px;margin:0 auto;padding:20px}.header{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;padding:2rem 0;margin-bottom:2rem;border-radius:10px;box-shadow:0 4px 6px #0000001a}.header h1{text-align:center;font-size:2.5rem;font-weight:300}.card{background:#fff;border-radius:10px;padding:2rem;margin-bottom:2rem;box-shadow:0 2px 10px #0000001a}.btn{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;padding:12px 24px;border-radius:6px;cursor:pointer;font-size:16px;font-weight:500;transition:all .3s ease;margin-right:10px;margin-bottom:10px}.btn:hover{transform:translateY(-2px);box-shadow:0 4px 12px #667eea66}.btn:disabled{background:#ccc;cursor:not-allowed;transform:none;box-shadow:none}.btn-secondary{background:#6c757d}.btn-secondary:hover{background:#5a6268;box-shadow:0 4px 12px #6c757d66}.loading{text-align:center;padding:2rem;color:#666}.error{background:#f8d7da;color:#721c24;padding:1rem;border-radius:6px;margin-bottom:1rem;border:1px solid #f5c6cb}.success{background:#d4edda;color:#155724;padding:1rem;border-radius:6px;margin-bottom:1rem;border:1px solid #c3e6cb}.table-container{overflow-x:auto;margin-top:1rem;border-radius:8px;box-shadow:0 2px 8px #0000001a}.table{width:100%;min-width:1200px;border-collapse:collapse;background:#fff;border-radius:8px;overflow:hidden}.table th{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;padding:1rem;text-align:left;font-weight:600;font-size:14px;white-space:nowrap}.table td{padding:1rem;border-bottom:1px solid #eee;font-size:14px;white-space:nowrap}.table tr:hover{background-color:#f8f9fa}.table tr:last-child td{border-bottom:none}.table td:nth-child(7){white-space:normal;min-width:200px;max-width:250px}.table a{color:#667eea;text-decoration:none;font-weight:700;transition:all .2s ease}.table a:hover{color:#5a6fd8;text-decoration:underline}.table a:active{color:#4c63d2}.table-container::-webkit-scrollbar{height:8px}.table-container::-webkit-scrollbar-track{background:#f1f1f1;border-radius:4px}.table-container::-webkit-scrollbar-thumb{background:linear-gradient(135deg,#667eea,#764ba2);border-radius:4px}.table-container::-webkit-scrollbar-thumb:hover{background:linear-gradient(135deg,#5a6fd8,#6a4190)}.tabs{display:flex;margin-bottom:2rem;border-bottom:2px solid #eee}.tab{background:none;border:none;padding:12px 24px;font-size:16px;font-weight:500;color:#666;cursor:pointer;border-bottom:3px solid transparent;transition:all .3s ease}.tab:hover{color:#667eea;background:#667eea1a}.tab.active{color:#667eea;border-bottom-color:#667eea;background:#667eea1a}.history-list{display:flex;flex-direction:column;gap:1.5rem}.history-item{background:#f8f9fa;border-radius:8px;padding:1.5rem;border-left:4px solid #667eea}.history-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem;flex-wrap:wrap;gap:1rem}.history-time{font-weight:700;color:#333}.history-type{background:#667eea;color:#fff;padding:4px 12px;border-radius:12px;font-size:12px;font-weight:500}.history-count{background:#28a745;color:#fff;padding:4px 12px;border-radius:12px;font-size:12px;font-weight:500}.status-change-info{background:#fff3cd;border:1px solid #ffeaa7;border-radius:6px;padding:1rem;margin-bottom:1rem}.status-change-info p{margin:0;color:#856404}.empty-state{text-align:center;padding:3rem;color:#666}.empty-state h3{margin-bottom:1rem;color:#333}.file-upload-btn{position:relative;overflow:hidden;display:inline-block}.file-upload-btn input[type=file]{position:absolute;left:-9999px}.file-upload-btn:hover{background:#5a6268}.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1rem;margin-bottom:2rem}.stat-card{background:#fff;padding:1.5rem;border-radius:8px;box-shadow:0 2px 8px #0000001a;text-align:center}.stat-number{font-size:2rem;font-weight:700;color:#667eea;margin-bottom:.5rem}.stat-label{color:#666;font-size:.9rem}@media (max-width: 768px){.container{padding:10px}.header h1{font-size:2rem}.card{padding:1rem}.table-container{font-size:12px}.table th,.table td{padding:.5rem}}