* {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        body {
            font-family: Arial, sans-serif;
            background-color: #f0f2f5;
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100vh;
        }
        .container {
            background-color: white;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
            padding: 40px;
            width: 400px;
        }
        h2 {
            text-align: center;
            margin-bottom: 24px;
            color: #1877f2;
        }
        form {
            display: flex;
            flex-direction: column;
        }
        input {
            margin-bottom: 16px;
            padding: 12px;
            border: 1px solid #dddfe2;
            border-radius: 6px;
            font-size: 16px;
        }
        button {
            background-color: #1877f2;
            color: white;
            border: none;
            border-radius: 6px;
            padding: 12px;
            font-size: 18px;
            cursor: pointer;
            transition: background-color 0.3s;
        }
        button:hover {
            background-color: #166fe5;
        }
        .switch {
            text-align: center;
            margin-top: 16px;
        }
        .switch a {
            color: #1877f2;
            text-decoration: none;
        }
        .error {
            color: red;
            margin-bottom: 16px;
        }