.App{min-height:100vh}.app-header{background:#fff;box-shadow:0 2px 4px #0000001a;margin-bottom:30px}.app-header .container{display:flex;justify-content:space-between;align-items:center;padding:20px}.app-header h1{font-size:24px;color:#333}.app-header nav{display:flex;gap:10px}*{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-color:#f5f5f5;color:#333}code{font-family:source-code-pro,Menlo,Monaco,Consolas,Courier New,monospace}.container{max-width:1200px;margin:0 auto;padding:20px}.btn{padding:10px 20px;border:none;border-radius:4px;cursor:pointer;font-size:14px;transition:all .3s}.btn-primary{background-color:#007bff;color:#fff}.btn-primary:hover{background-color:#0056b3}.btn-danger{background-color:#dc3545;color:#fff}.btn-danger:hover{background-color:#c82333}.btn-secondary{background-color:#6c757d;color:#fff}.btn-secondary:hover{background-color:#5a6268}.form-group{margin-bottom:20px}.form-group label{display:block;margin-bottom:8px;font-weight:500;color:#333}.form-group input,.form-group textarea,.form-group select{width:100%;padding:10px;border:1px solid #ddd;border-radius:4px;font-size:14px}.form-group textarea{min-height:100px;resize:vertical}.card{background:#fff;border-radius:8px;padding:20px;margin-bottom:20px;box-shadow:0 2px 4px #0000001a}.card-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:15px;padding-bottom:15px;border-bottom:1px solid #eee}.card-title{font-size:20px;font-weight:600;color:#333}.alert{padding:12px 16px;border-radius:4px;margin-bottom:20px}.alert-success{background-color:#d4edda;color:#155724;border:1px solid #c3e6cb}.alert-error{background-color:#f8d7da;color:#721c24;border:1px solid #f5c6cb}.loading{text-align:center;padding:40px;color:#666}