:root{--primary-color: #007bff;--primary-dark: #0056b3;--primary-light: #cfe2ff;--secondary-color: #6c757d;--success-color: #28a745;--danger-color: #dc3545;--warning-color: #ffc107;--info-color: #17a2b8;--light-color: #f8f9fa;--dark-color: #343a40;--border-color: #dee2e6;--text-primary: #333;--text-secondary: #666;--text-muted: #999}*{margin:0;padding:0;box-sizing:border-box}html,body{height:100%;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;line-height:1.6;color:var(--text-primary);background-color:#f5f5f5;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}button{font-family:inherit}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:#f1f1f1}::-webkit-scrollbar-thumb{background:#ccc;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:#999}.text-primary{color:var(--primary-color)}.text-secondary{color:var(--text-secondary)}.text-muted{color:var(--text-muted)}.mt-0{margin-top:0}.mt-1{margin-top:.5rem}.mt-2{margin-top:1rem}.mt-3{margin-top:1.5rem}.mt-4{margin-top:2rem}.mb-0{margin-bottom:0}.mb-1{margin-bottom:.5rem}.mb-2{margin-bottom:1rem}.mb-3{margin-bottom:1.5rem}.mb-4{margin-bottom:2rem}.p-0{padding:0}.p-1{padding:.5rem}.p-2{padding:1rem}.p-3{padding:1.5rem}.p-4{padding:2rem}