:root{--primary-color: #1976d2;--secondary-color: #dc004e;--success-color: #4caf50;--warning-color: #ff9800;--error-color: #f44336;--background-color: #ffffff;--text-color: #333333;--border-color: #e0e0e0}*{margin:0;padding:0;box-sizing:border-box}html,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}body{background-color:var(--background-color);color:var(--text-color);line-height:1.6}#root{width:100%;min-height:100vh}a{color:var(--primary-color);text-decoration:none}a:hover{text-decoration:underline}button{cursor:pointer;border:none;padding:8px 16px;border-radius:4px;font-size:14px;font-weight:500;transition:all .2s ease}button:hover{opacity:.9}button:disabled{opacity:.6;cursor:not-allowed}input,textarea,select{border:1px solid var(--border-color);border-radius:4px;padding:8px 12px;font-size:14px;font-family:inherit;transition:border-color .2s ease}input:focus,textarea:focus,select:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 3px #1976d21a}table{width:100%;border-collapse:collapse}table th,table td{padding:12px;text-align:left;border-bottom:1px solid var(--border-color)}table th{background-color:#f5f5f5;font-weight:600}table tr:hover{background-color:#fafafa}.container{max-width:1200px;margin:0 auto;padding:0 20px}.hidden{display:none}.text-center{text-align:center}.text-muted{color:#999}.mt-1{margin-top:8px}.mt-2{margin-top:16px}.mt-3{margin-top:24px}.mb-1{margin-bottom:8px}.mb-2{margin-bottom:16px}.mb-3{margin-bottom:24px}