/* Global Styles */
body {
    font-family: 'Roboto', sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
    scroll-behavior: smooth;
}

/* Header */
header {
    background: linear-gradient(45deg, #1abc9c, #3498db);
    color: white;
    padding: 20px 0;
    text-align: center;
}

nav ul {
    list-style: none;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    padding: 0;
}

nav ul li {
    margin: 0 15px;
}

nav ul li a {
    color: white;
    text-decoration: none;
    font-weight: bold;
    transition: color 0.3s;
}

nav ul li a:hover {
    color: #f1c40f;
}

/* Section Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* Profile Section */
.profile {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
    margin-top: 20px;
}

.profile-photo, .qr-code {
    width: 200px;
    height: auto;
    border-radius: 50%;
}

/* Gallery Grid */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 15px;
    margin-top: 20px;
}

.gallery-photo {
    width: 100%;
    height: auto;
    border-radius: 10px;
    cursor: pointer;
    transition: transform 0.3s;
}

.gallery-photo:hover {
    transform: scale(1.05);
}

/* Research Photos */
.research-photo {
    width: 100%;
    max-width: 600px;
    height: auto;
    display: block;
    margin: 10px auto;
    border-radius: 10px;
}

/* Modal Popup */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    z-index: 1;
    overflow: auto;
}

.modal-content {
    display: block;
    margin: auto;
    max-width: 80%;
    max-height: 80%;
    border-radius: 10px;
    margin-top: 50px;
}

.close {
    position: absolute;
    top: 15px;
    right: 30px;
    color: white;
    font-size: 40px;
    cursor: pointer;
}

#caption {
    text-align: center;
    color: white;
    padding: 10px;
}

/* Footer */
footer {
    background-color: #2c3e50;
    color: white;
    text-align: center;
    padding: 15px;
    position: relative;
    bottom: 0;
    width: 100%;
}

/* Media Queries */
@media (max-width: 768px) {
    .gallery-grid {
        grid-template-columns: 1fr;
    }

    .profile-photo, .qr-code {
        width: 150px;
    }

    .modal-content {
        max-width: 90%;
        max-height: 90%;
    }
}