.app{min-height:100vh;display:flex;flex-direction:column}.header{background:#2c3e50;color:#fff;padding:1rem 2rem;box-shadow:0 2px 4px #0000001a}.header h1{margin-bottom:1rem;font-size:1.8rem}.header nav{display:flex;gap:1.5rem}.header nav a{color:#fff;text-decoration:none;padding:.5rem 1rem;border-radius:4px;transition:background .2s}.header nav a:hover{background:#ffffff1a}.main-content{flex:1;padding:2rem;max-width:1400px;width:100%;margin:0 auto}.page-title{font-size:2rem;margin-bottom:1.5rem;color:#2c3e50}.card{background:#fff;border-radius:8px;padding:1.5rem;box-shadow:0 2px 8px #0000001a;margin-bottom:1.5rem}.btn{padding:.5rem 1rem;border:none;border-radius:4px;cursor:pointer;font-size:1rem;transition:all .2s}.btn-primary{background:#3498db;color:#fff}.btn-primary:hover{background:#2980b9}.btn-success{background:#27ae60;color:#fff}.btn-success:hover{background:#229954}.btn-danger{background:#e74c3c;color:#fff}.btn-danger:hover{background:#c0392b}.form-group{margin-bottom:1rem}.form-group label{display:block;margin-bottom:.5rem;font-weight:500;color:#2c3e50}.form-group input,.form-group textarea,.form-group select{width:100%;padding:.5rem;border:1px solid #ddd;border-radius:4px;font-size:1rem}.form-group textarea{min-height:100px;resize:vertical}table{width:100%;border-collapse:collapse}table th,table td{padding:.75rem;text-align:left;border-bottom:1px solid #ddd}table th{background:#f8f9fa;font-weight:600;color:#2c3e50}table tr:hover{background:#f8f9fa}.loading{text-align:center;padding:2rem;color:#7f8c8d}.error{background:#fee;color:#c0392b;padding:1rem;border-radius:4px;margin-bottom:1rem}.success{background:#efe;color:#27ae60;padding:1rem;border-radius:4px;margin-bottom:1rem}*{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:#f5f5f5}code{font-family:source-code-pro,Menlo,Monaco,Consolas,Courier New,monospace}#root{min-height:100vh}