@media (prefers-color-scheme: light){:root{--bg-primary: #ffffff;--bg-secondary: #f5f5f5;--bg-hover: #e8e8e8;--bg-active: #d0d0d0;--text-primary: #1a1a1a;--text-secondary: #666666;--text-hover: #333333;--text-active: #000000;--accent-bg: #007bff;--accent-bg-hover: #0056b3;--accent-bg-active: #004494;--accent-text: #ffffff;--header-bg: #e0e0e0;--footer-bg: #e0e0e0;--border-color: #ddd}}@media (prefers-color-scheme: dark){:root{--bg-primary: #1a1a1a;--bg-secondary: #2d2d2d;--bg-hover: #3d3d3d;--bg-active: #4d4d4d;--text-primary: #ffffff;--text-secondary: #aaaaaa;--text-hover: #dddddd;--text-active: #ffffff;--accent-bg: #4da3ff;--accent-bg-hover: #7ab8ff;--accent-bg-active: #3399ff;--accent-text: #000000;--header-bg: #333333;--footer-bg: #333333;--border-color: #444}}*{box-sizing:border-box}body{margin:0;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:var(--bg-primary);color:var(--text-primary);transition:background-color .3s ease,color .3s ease}a{color:var(--accent-bg);text-decoration:none;transition:color .2s ease}a:hover{color:var(--accent-bg-hover)}a:active{color:var(--accent-bg-active)}button{background-color:var(--accent-bg);color:var(--accent-text);border:none;padding:.75rem 1.5rem;border-radius:4px;cursor:pointer;font-size:1rem;transition:background-color .2s ease,transform .1s ease}button:hover{background-color:var(--accent-bg-hover)}button:active{background-color:var(--accent-bg-active);transform:scale(.98)}button:disabled{opacity:.6;cursor:not-allowed}input,select,textarea{background-color:var(--bg-primary);color:var(--text-primary);border:1px solid var(--border-color);padding:.75rem;border-radius:4px;font-size:1rem;transition:border-color .2s ease,background-color .2s ease}input:focus,select:focus,textarea:focus{outline:none;border-color:var(--accent-bg)}input::placeholder{color:var(--text-secondary)}.card{background-color:var(--bg-secondary);border-radius:8px;padding:1.5rem;box-shadow:0 2px 8px #0000001a}.list-item{background-color:var(--bg-primary);border:1px solid var(--border-color);border-radius:8px;padding:1rem;margin-bottom:.5rem;cursor:pointer;transition:background-color .2s ease,border-color .2s ease}.list-item:hover{background-color:var(--bg-hover);border-color:var(--accent-bg)}.list-item:active{background-color:var(--bg-active)}.page-container{min-height:100vh;display:flex;flex-direction:column}.page-header{background-color:var(--header-bg);padding:1rem 1.5rem;display:flex;align-items:center;justify-content:space-between;box-shadow:0 2px 4px #0000001a}.page-header h1{margin:0;font-size:1.25rem;color:var(--text-primary)}.page-content{flex:1;padding:1.5rem;max-width:800px;margin:0 auto;width:100%}.page-footer{background-color:var(--footer-bg);padding:1rem 1.5rem;text-align:center;color:var(--text-secondary);font-size:.875rem;border-top:1px solid var(--border-color)}.back-button{margin-right:1rem;background:none;border:none;color:var(--text-primary);font-size:1.5rem;cursor:pointer;padding:.5rem;display:flex;align-items:center;justify-content:center}.back-button:hover{background-color:var(--bg-hover);color:var(--text-hover)}.back-button:active{background-color:var(--bg-active);color:var(--text-active)}.user-info{display:flex;flex-direction:column;align-items:flex-end;font-size:.875rem}.user-name{font-weight:600;color:var(--text-primary)}.user-id{color:var(--text-secondary);font-size:.75rem}.user-info-loading{color:var(--text-secondary);font-size:.875rem}.section-title{font-size:1.5rem;font-weight:600;color:var(--text-primary);margin-bottom:1rem}.empty-state{text-align:center;padding:3rem;color:var(--text-secondary)}.empty-state h3{color:var(--text-primary);margin-bottom:.5rem}.form-group{margin-bottom:1rem}.form-group label{display:block;margin-bottom:.5rem;color:var(--text-primary);font-weight:500}.form-group input,.form-group select,.form-group textarea{width:100%}.form-actions{display:flex;gap:1rem;margin-top:1.5rem}.form-actions button{flex:1}.form-actions button.cancel{background-color:var(--bg-secondary);color:var(--text-primary);border:1px solid var(--border-color)}.form-actions button.cancel:hover{background-color:var(--bg-hover)}body{margin:0;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}code{font-family:source-code-pro,Menlo,Monaco,Consolas,Courier New,monospace}.App{text-align:center}.App-logo{height:40vmin;pointer-events:none}@media (prefers-reduced-motion: no-preference){a{animation:App-logo-spin infinite 20s linear}}.App-header{background-color:#282c34;padding:20px;color:#fff}.App-link{color:#61dafb}@keyframes App-logo-spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.data-table-container{overflow-x:auto;margin-top:1rem}.data-table{width:100%;border-collapse:collapse;background-color:var(--bg-primary);border-radius:8px;overflow:hidden}.data-table-header{background-color:var(--bg-secondary);color:var(--text-primary);padding:1rem;text-align:left;font-weight:600;border-bottom:2px solid var(--border-color)}.data-table-cell{padding:.875rem 1rem;color:var(--text-primary);border-bottom:1px solid var(--border-color)}.data-table-row{transition:background-color .2s ease}.data-table-row:last-child .data-table-cell{border-bottom:none}.data-table-row:hover{background-color:var(--bg-hover)}.data-table-actions{white-space:nowrap;display:flex;gap:.5rem;flex-wrap:wrap}.data-table-actions button{padding:.5rem .75rem;font-size:.875rem}.not-found-container{display:flex;justify-content:center;align-items:center;min-height:100vh;background-color:#f5f5f5;padding:20px}.not-found-content{background:#fff;padding:2rem;border-radius:8px;box-shadow:0 2px 10px #0000001a;text-align:center;max-width:400px}.not-found-title{color:#e74c3c;font-size:4rem;margin:0 0 1rem}.not-found-content h2{color:#333;margin-bottom:1rem}.not-found-content p{color:#666;margin-bottom:1.5rem}.not-found-button{display:inline-block;background-color:#007bff;color:#fff;text-decoration:none;padding:.75rem 1.5rem;border-radius:4px;font-size:1rem;transition:background-color .2s}.not-found-button:hover{background-color:#0056b3}