body {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            min-height: 100vh;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        
        .login-container {
            max-width: 400px;
            margin: 80px auto;
            padding: 40px;
            background: rgba(255, 255, 255, 0.95);
            border-radius: 20px;
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
            backdrop-filter: blur(10px);
        }
        
        .dashboard-container {
            max-width: 900px;
            margin: 50px auto;
            padding: 30px;
            background: rgba(255, 255, 255, 0.95);
            border-radius: 20px;
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
            backdrop-filter: blur(10px);
        }
        
        .form-control {
            border-radius: 10px;
            border: 2px solid #e9ecef;
            padding: 12px 15px;
            margin-bottom: 20px;
        }
        
        .form-control:focus {
            border-color: #667eea;
            box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.25);
        }
        
        .btn-primary {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            border: none;
            border-radius: 10px;
            padding: 12px 30px;
            font-weight: 600;
            transition: transform 0.2s;
        }
        
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
        }
        
        .alert {
            border-radius: 10px;
            border: none;
        }
        
        .user-card {
            background: white;
            border-radius: 15px;
            padding: 20px;
            margin-bottom: 20px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
            transition: transform 0.2s;
        }
        
        .user-card:hover {
            transform: translateY(-2px);
        }
        
        .status-badge {
            font-size: 0.8em;
            padding: 5px 10px;
            border-radius: 20px;
        }
        
        .loading-spinner {
            display: none;
            text-align: center;
            margin: 20px 0;
        }
        
        #usersList {
            max-height: 600px;
            overflow-y: auto;
        }
        
        .nav-tabs .nav-link {
            border-radius: 10px 10px 0 0;
            border: none;
            margin-right: 5px;
        }
        
        .nav-tabs .nav-link.active {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
        }