body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    background-color: #f0f2f5;
    color: #333;
}

.card {
    background-color: #fff;
    border-radius: 12px;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
    padding: 30px;
    text-align: center;
    max-width: 350px;
    width: 90%;
    transition: transform 0.3s ease-in-out;
}

.card:hover {
    transform: translateY(-5px);
}

.avatar {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid #007bff;
    margin-bottom: 20px;
    transition: border-color 0.3s ease;
}

.card:hover .avatar {
    border-color: #0056b3;
}

h1 {
    font-size: 1.8em;
    margin-bottom: 8px;
    color: #222;
}

p {
    font-size: 1em;
    margin-bottom: 6px;
    line-height: 1.5;
}

p#username {
    color: #555;
    font-weight: 500;
}

p#bio {
    font-style: italic;
    color: #666;
    margin-top: 15px;
    margin-bottom: 20px;
}

p#location {
    color: #777;
    font-size: 0.9em;
}

.button {
    display: inline-block;
    background-color: #007bff;
    color: #fff;
    padding: 12px 25px;
    border-radius: 8px;
    text-decoration: none;
    margin-top: 25px;
    font-weight: bold;
    transition: background-color 0.3s ease, transform 0.2s ease;
}

.button:hover {
    background-color: #0056b3;
    transform: translateY(-2px);
}