body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    color: #333;
    background: url('images/background_pattern.jpg') repeat;
}

header {
    background: rgba(51, 51, 51, 0.9);
    color: #fff;
    padding: 20px 0;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.logo img {
    height: 105px; /* Increase the height of the logo by 50% */
}

nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
}

nav ul li {
    margin-left: 20px;
}

nav ul li a {
    color: #fff;
    text-decoration: none;
    padding: 10px 20px; /* Increase padding for better appearance */
    background: #0056b3; /* Add background color */
    border-radius: 5px; /* Add border radius */
    transition: background 0.3s ease; /* Smooth transition for hover effect */
}

nav ul li a:hover {
    background: #004494; /* Darker blue on hover */
}

.hero {
    background: #ADD8E6; /* Light blue color */
    color: #fff;
    padding: 50px 0; /* Reduce padding to make the section shorter */
    text-align: center;
}

.hero h1 {
    font-size: 3em; /* Increase the font size for better readability */
    margin: 0;
}

.hero p {
    font-size: 1.5em; /* Increase the font size for better readability */
}

.container {
    width: 80%;
    margin: 0 auto;
    padding: 20px 0;
}

.about {
    display: flex;
    align-items: center;
    margin: 50px 0;
    flex-wrap: wrap;
}

.profile-pic {
    flex: 1;
    max-width: 200px;
    margin-right: 20px;
}

.profile-pic img {
    width: 100%;
    border-radius: 50%;
}

.profile-description {
    flex: 2;
    min-width: 250px;
}

.profile-description h2 {
    color: #444;
}

.profile-description p {
    line-height: 1.6;
}

.profile-description .btn {
    display: inline-block;
    padding: 10px 20px;
    background: #333;
    color: #fff;
    text-decoration: none;
    border-radius: 5px;
    margin-top: 10px;
}

.profile-description .btn:hover {
    background: #555;
}

footer {
    background: #333;
    color: #fff;
    text-align: center;
    padding: 20px 0;
    margin-top: 50px;
}

footer p {
    margin: 5px 0;
}

.content {
    background: #f9f9f9;
    padding: 20px;
    border-radius: 5px;
    margin: 20px auto;
    width: 80%;
}

h2 {
    color: #444;
}

.publications-list {
    list-style: none;
    padding: 0;
}

.publications-list li {
    background: #fff;
    margin: 10px 0;
    padding: 15px;
    border: 1px solid #ddd;
    border-radius: 5px;
}

.publications-list li strong {
    color: #333;
}

.video {
    margin: 20px 0;
}

.video h3 {
    margin-bottom: 10px;
    color: #444;
}

/* Media Queries for Responsive Design */
@media (max-width: 768px) {
    .header .container, .nav ul {
        flex-direction: column;
        align-items: center;
    }
    
    .hero h1 {
        font-size: 2.5em;
    }

    .hero p {
        font-size: 1.2em;
    }

    .profile-description {
        margin-top: 20px;
    }

    .profile-pic {
        margin-bottom: 20px;
    }

    .container {
        width: 90%;
    }

    nav ul li {
        margin: 10px 0;
    }

    nav ul li a {
        padding: 10px 15px;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2em;
    }

    .hero p {
        font-size: 1em;
    }

    .logo img {
        height: 80px;
    }

    .profile-description {
        font-size: 1em;
    }

    .container {
        width: 95%;
    }
}