body {
            margin: 0;
            padding: 0;
            display: flex;
            justify-content: center; 
            align-items: center;  
            min-height: 100vh;  
            background-color: #f4f6f9;
            font-family: Arial, sans-serif;
        }

        .login-container {
            width: 100%;
            max-width: 420px;
            padding: 40px;
            background: #ffffff;
            border-radius: 8px;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
            box-sizing: border-box;
        }

        .login-container h2 {
            text-align: center; 
            margin-bottom: 30px;
            color: #333333;
            font-size: 24px;
        }

        .form-group {
            margin-bottom: 20px;
        }

        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: bold;
            color: #555;
        }

        .form-group input {
            width: 100%;
            padding: 10px;
            border: 1px solid #ccc;
            border-radius: 4px;
            box-sizing: border-box;
        }

        .forgot-pw {
            text-align: right;
            margin-bottom: 20px;
        }

        button[type="submit"] {
            width: 100%;  
            padding: 12px;
            background-color: #3498db;
            color: white;
            border: none;
            border-radius: 4px;
            font-size: 16px;
            cursor: pointer;
            transition: background 0.2s;
        }

        button[type="submit"]:hover {
            background-color: #2980b9;
        }

        .error-msg-box {
            display: none;
            color: #ff4d4d;
            background-color: #ffe6e6;
            padding: 10px;
            border-radius: 4px;
            margin-bottom: 15px;
            font-size: 14px;
            text-align: center;
            font-weight: bold;
            border: 1px solid #ffcccc;
        }