*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:#f0f2f5;color:#333}.app{min-height:100vh}.header{background:#fff;padding:1rem 2rem;box-shadow:0 2px 8px #0000001a;display:flex;justify-content:space-between;align-items:center}.header h1{font-size:1.5rem;color:#1890ff}.header-actions{display:flex;gap:1rem;align-items:center}.main{padding:2rem;max-width:4000px;margin:0 auto}.btn{padding:.5rem 1rem;border:none;border-radius:6px;cursor:pointer;font-size:.9rem;transition:all .2s}.btn-primary{background:#1890ff;color:#fff}.btn-primary:hover{background:#40a9ff}.btn-secondary{background:#6c757d;color:#fff}.btn-secondary:hover{background:#5a6268}.btn-danger{background:#dc3545;color:#fff}.btn-danger:hover{background:#c82333}.btn-success{background:#28a745;color:#fff}.btn-success:hover{background:#218838}.btn-outline{background:transparent;border:1px solid #d9d9d9;color:#333}.btn-outline:hover{border-color:#1890ff;color:#1890ff}.btn-sm{padding:.25rem .5rem;font-size:.8rem}.card{background:#fff;border-radius:8px;box-shadow:0 2px 8px #00000014;padding:1.5rem}.card-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem;padding-bottom:1rem;border-bottom:1px solid #f0f0f0}.card-title{font-size:1.25rem;font-weight:600}.grid{display:grid;gap:1.5rem}.grid-3{grid-template-columns:repeat(auto-fill,minmax(280px,1fr))}.grid-2{grid-template-columns:repeat(auto-fill,minmax(400px,1fr))}.form-group{margin-bottom:1rem}.form-label{display:block;margin-bottom:.5rem;font-weight:500}.form-input{width:100%;padding:.75rem;border:1px solid #d9d9d9;border-radius:6px;font-size:1rem}.form-input:focus{outline:none;border-color:#1890ff;box-shadow:0 0 0 2px #1890ff33}.form-select{width:100%;padding:.75rem;border:1px solid #d9d9d9;border-radius:6px;font-size:1rem;background:#fff}.badge{display:inline-block;padding:.25rem .5rem;border-radius:4px;font-size:.75rem;font-weight:500}.badge-primary{background:#e6f7ff;color:#1890ff}.badge-success{background:#f6ffed;color:#52c41a}.badge-warning{background:#fffbe6;color:#faad14}.badge-info{background:#f9f0ff;color:#722ed1}.table-container{overflow-x:auto}.data-table{width:100%;border-collapse:collapse}.data-table th,.data-table td{padding:.75rem;text-align:left;border-bottom:1px solid #f0f0f0}.data-table th{background:#fafafa;font-weight:600;color:#333}.data-table tr:hover{background:#fafafa}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:1000}.modal{background:#fff;border-radius:12px;padding:2rem;min-width:400px;max-width:600px;max-height:90vh;overflow-y:auto}.modal-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1.5rem}.modal-title{font-size:1.5rem;font-weight:600}.modal-close{background:none;border:none;font-size:1.5rem;cursor:pointer;color:#999}.modal-close:hover{color:#333}.modal-footer{display:flex;gap:1rem;justify-content:flex-end;margin-top:1.5rem;padding-top:1rem;border-top:1px solid #f0f0f0}.spreadsheet{background:#fff;border-radius:8px;box-shadow:0 2px 8px #00000014}.spreadsheet-table{width:100%;border-collapse:collapse;min-width:800px}.spreadsheet-table th,.spreadsheet-table td{border:1px solid #e8e8e8;padding:0;min-width:120px}.spreadsheet-table th{background:#fafafa;font-weight:600;text-align:center;padding:.1rem .45rem;position:sticky;top:0;z-index:1}.spreadsheet-table td input{width:100%;border:none;padding:.75rem;font-size:.9rem;font-family:inherit}.spreadsheet-table td input:focus{outline:2px solid #1890ff;outline-offset:-2px}.toolbar{display:flex;gap:.5rem;padding:1rem;background:#fff;border-bottom:1px solid #f0f0f0}.tabs{display:flex;gap:.5rem;border-bottom:1px solid #f0f0f0;margin-bottom:1.5rem}.tab{padding:.75rem 1.5rem;border:none;background:none;cursor:pointer;font-size:.95rem;color:#666;border-bottom:2px solid transparent;margin-bottom:-1px}.tab:hover{color:#1890ff}.tab.active{color:#1890ff;border-bottom-color:#1890ff}.alert{padding:1rem;border-radius:6px;margin-bottom:1rem}.alert-error{background:#fff2f0;border:1px solid #ffccc7;color:#ff4d4f}.alert-success{background:#f6ffed;border:1px solid #b7eb8f;color:#52c41a}.empty-state{text-align:center;padding:3rem;color:#999}.empty-state h3{margin-bottom:.5rem;color:#666}.auth-container{min-height:100vh;display:flex;align-items:center;justify-content:center}.auth-card{background:#fff;padding:2.5rem;border-radius:12px;box-shadow:0 4px 20px #0000001a;width:100%;max-width:400px}.auth-card h2{text-align:center;margin-bottom:1.5rem;color:#1890ff}.auth-footer{text-align:center;margin-top:1rem;color:#666}.auth-footer a{color:#1890ff;cursor:pointer;text-decoration:underline}.loading{display:flex;align-items:center;justify-content:center;padding:2rem;color:#999}.spinner{width:24px;height:24px;border:3px solid #f3f3f3;border-top:3px solid #1890ff;border-radius:50%;animation:spin 1s linear infinite;margin-right:.5rem}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.user-list{display:flex;flex-direction:column;gap:.5rem}.user-item{display:flex;justify-content:space-between;align-items:center;padding:.75rem;background:#fafafa;border-radius:6px}.user-info{display:flex;align-items:center;gap:.75rem}.user-avatar{width:36px;height:36px;border-radius:50%;background:#1890ff;color:#fff;display:flex;align-items:center;justify-content:center;font-weight:600}.user-details{display:flex;flex-direction:column}.user-name{font-weight:500}.user-role{font-size:.8rem;color:#999}.filter-tag{display:inline-flex;align-items:center;gap:.25rem;padding:.25rem .5rem;background:#e6f7ff;border-radius:4px;font-size:.8rem;color:#1890ff;margin-right:.5rem;margin-bottom:.5rem}.filter-tag button{background:none;border:none;cursor:pointer;color:#1890ff;padding:0;font-size:1rem;line-height:1}.spreadsheet-table tbody tr.selected{background:#e6f7ff}.spreadsheet-table tbody tr.selected:hover{background:#bae7ff}