body {
    font-family: Arial, sans-serif;
    margin: 0;
    background-color: #f4f4f4;
    color: #333333;
}

nav {
    background-color: #222222;
    padding: 15px;
    text-align: center;
}

nav a {
    color: white;
    text-decoration: none;
    margin: 0 20px;
}

nav a:hover {
    text-decoration: underline;
}

header {
    text-align: center;
    padding: 40px 20px;
    background-color: white;
}

.profile-photo {
    width: 180px;
    height: 180px;
    object-fit: cover;
    border-radius: 50%;
    margin-bottom: 20px;
}

main {
    max-width: 900px;
    margin: 30px auto;
    padding: 20px;
    background-color: white;
}

h1 {
    font-size: 36px;
}

h2 {
    margin-top: 30px;
}

form {
    max-width: 500px;
    margin-top: 20px;
}

input,
textarea {
    width: 100%;
    padding: 10px;
    box-sizing: border-box;
}

textarea {
    height: 120px;
}

input[type="submit"] {
    width: auto;
    padding: 10px 20px;
    cursor: pointer;
}

footer {
    background-color: #222222;
    color: white;
    text-align: center;
    padding: 20px;
    margin-top: 40px;
}

footer a {
    color: white;
    margin: 0 10px;
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 10px;
}

.social-icon {
    width: 40px;
    height: 40px;
    object-fit: contain;
}

.social-icon:hover {
    opacity: 0.7;
}

.hobby-image {
    width: 100%;
    max-width: 700px;
    height: 350px;
    object-fit: cover;
    display: block;
    margin: 15px auto 20px auto;
    border-radius: 8px;
}

.achievement-image {
    width: 100%;
    max-width: 700px;
    height: auto;
    display: block;
    margin: 15px auto 20px auto;
    border-radius: 8px;
}

.social-links img[src$=".svg"] {
    filter: invert(1);
}

@media (max-width: 600px) {
    nav a {
        display: block;
        margin: 10px 0;
    }

    main {
        margin: 10px;
    }
}