body {
            background: linear-gradient(135deg, #1e3a5f 0%, #2a4a6b 100%);
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: 'Arial', sans-serif;
        }
        
        .login-container {
            background: white;
            border-radius: 15px;
            box-shadow: 0 15px 35px rgba(0,0,0,0.1);
            overflow: hidden;
            width: 100%;
            max-width: 400px;
        }
        
        .login-header {
            background: linear-gradient(135deg, #4ecdc4 0%, #44a08d 100%);
            color: white;
            padding: 30px;
            text-align: center;
        }
        
        .login-header h2 {
            margin: 0;
            font-weight: 300;
        }
        
        .login-header .icon {
            font-size: 2.5rem;
            margin-bottom: 10px;
        }
        
        .login-body {
            padding: 30px;
        }
        
        .form-control {
            border-radius: 10px;
            padding: 12px 15px;
            border: 2px solid #e0e0e0;
            transition: all 0.3s ease;
        }
        
        .form-control:focus {
            border-color: #4ecdc4;
            box-shadow: 0 0 0 0.2rem rgba(78, 205, 196, 0.25);
        }
        
        .btn-login {
            background: linear-gradient(135deg, #4ecdc4 0%, #44a08d 100%);
            border: none;
            border-radius: 10px;
            padding: 12px;
            color: white;
            font-weight: 600;
            transition: all 0.3s ease;
            width: 100%;
        }
        
        .btn-login:hover {
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(78, 205, 196, 0.4);
            color: white;
        }
        
        .alert {
            border-radius: 10px;
            border: none;
        }
        
        .input-group {
            margin-bottom: 20px;
        }
        
        .input-group-text {
            background: #f8f9fa;
            border: 2px solid #e0e0e0;
            border-right: none;
            border-radius: 10px 0 0 10px;
        }
        
        .input-group .form-control {
            border-left: none;
            border-radius: 0 10px 10px 0;
        }
        
        .login-footer {
            background: #f8f9fa;
            padding: 20px;
            text-align: center;
            color: #6c757d;
            font-size: 0.9rem;
        }
        
        .password-toggle {
            cursor: pointer;
            color: #6c757d;
            transition: color 0.3s ease;
        }
        
        .password-toggle:hover {
            color: #4ecdc4;
        }