*{margin:0;padding:0;box-sizing:border-box}body{font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;font-size:14px;line-height:1.5;color:#333;background-color:#f5f5f5}.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 ease}.btn.btn-primary{background-color:#007bff;color:#fff}.btn.btn-primary:hover{background-color:#0056b3}.btn.btn-secondary{background-color:#6c757d;color:#fff}.btn.btn-secondary:hover{background-color:#545b62}.btn.btn-danger{background-color:#dc3545;color:#fff}.btn.btn-danger:hover{background-color:#c82333}.form-group{margin-bottom:20px}.form-group label{display:block;margin-bottom:5px;font-weight:500}.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 input:focus,.form-group textarea:focus,.form-group select:focus{outline:none;border-color:#007bff}.form-group .error{color:#dc3545;font-size:12px;margin-top:5px}.card{background:#fff;border-radius:8px;box-shadow:0 2px 4px #0000001a;padding:20px;margin-bottom:20px}table{width:100%;border-collapse:collapse}table th,table td{padding:12px;text-align:left;border-bottom:1px solid #ddd}table th{background-color:#f8f9fa;font-weight:600}table tr:hover{background-color:#f8f9fa}.spinner{border:3px solid #f3f3f3;border-top:3px solid #007bff;border-radius:50%;width:40px;height:40px;animation:spin 1s linear infinite;margin:20px auto}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}