body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    padding: 20px;
}

.container {
    background: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 400px;
    text-align: center;
}

h2 {
    margin-bottom: 20px;
    font-size: 24px;
    color: #333;
}

input {
    width: calc(100% - 20px);
    padding: 10px;
    margin: 10px 0;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 16px;
    box-sizing: border-box; 
}

button {
    width: 100%;
    padding: 10px;
    background-color: #28a745;
    color: #fff;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    margin-top: 10px;
}

button:hover {
    background-color: #218838;
}

.error {
    color: red;
    margin-bottom: 10px;
    font-size: 14px;
}

.success {
    color: green;
    margin-bottom: 10px;
    font-size: 14px;
}

a {
    color: #007bff;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* Responsive Design */
@media (max-width: 600px) {
    .container {
        padding: 15px;
        max-width: 90%;
    }

    h2 {
        font-size: 20px;
    }

    input {
        font-size: 14px;
        padding: 8px;
    }

    button {
        font-size: 14px;
        padding: 8px;
    }
}

@media (max-width: 400px) {
    .container {
        padding: 10px;
        max-width: 95%; 
    }

    h2 {
        font-size: 18px;
    }

    input {
        font-size: 12px;
        padding: 6px;
    }

    button {
        font-size: 12px;
        padding: 6px;
    }
}