body {
    font-family: 'Roboto', Arial, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    background-color: #f8f9fa;
    color: #333;
}

header {
    background: linear-gradient(135deg, #005577, #0077b6);
    color: white;
    text-align: center;
    padding: 2em 1em;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.header-content {
    max-width: 800px;
    margin: 0 auto;
}

.profile-pic {
    max-width: 150px;
    border-radius: 50%;
    border: 3px solid white;
    margin-bottom: 1em;
}

header h1 {
    margin: 0;
    font-size: 2.5em;
}

header p {
    margin: 0.5em 0;
    font-size: 1.2em;
}

nav {
    position: sticky;
    top: 0;
    background-color: #003d5b;
    padding: 0.75em;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    z-index: 1000;
}

nav a {
    color: white;
    text-decoration: none;
    margin: 0 1.5em;
    font-weight: 500;
    transition: color 0.3s ease;
}

nav a:hover {
    color: #90e0ef;
}

main {
    max-width: 900px;
    margin: 0 auto;
    padding: 2em 1em;
    background: white;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.05);
    border-radius: 8px;
}

section {
    margin-bottom: 2em;
}

h2 {
    color: #005577;
    border-bottom: 2px solid #0077b6;
    padding-bottom: 0.3em;
    margin-bottom: 1em;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 1em;
}

th, td {
    border: 1px solid #e0e0e0;
    padding: 0.75em;
    text-align: left;
}

th {
    background-color: #005577;
    color: white;
}

ul, ol {
    margin: 1em 0;
    padding-left: 2em;
}

ul li, ol li {
    margin-bottom: 0.5em;
}

.pictures {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5em;
}

.picture-item img {
    max-width: 100%;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.picture-item img:hover {
    transform: scale(1.05);
}

.picture-item p {
    margin: 0.5em 0;
    text-align: center;
    font-style: italic;
}

.references p {
    margin: 1em 0;
}

footer {
    background: linear-gradient(135deg, #005577, #0077b6);
    color: white;
    text-align: center;
    padding: 1.5em;
    margin-top: 2em;
}

footer h2 {
    color: white;
    border-bottom: none;
    margin-bottom: 0.5em;
}

.contact-links {
    margin-bottom: 1em;
}

.contact-links a {
    color: #caf0f8;
    text-decoration: none;
    margin: 0 1em;
    transition: color 0.3s ease;
}

.contact-links a:hover {
    color: #ffffff;
}

.contact-links i {
    margin-right: 0.5em;
}

@media (max-width: 600px) {
    header h1 {
        font-size: 2em;
    }
    nav a {
        margin: 0 0.5em;
        font-size: 0.9em;
    }
    .pictures {
        grid-template-columns: 1fr;
    }
}