/* Enhanced styles.css for a modern, refined look */
body {
    font-family: 'Roboto', sans-serif;
    line-height: 1.8;
    color: #222;
    background: linear-gradient(to bottom, #f5f7fa, #e9ecef);
    margin: 0;
}

header {
    background: rgba(0, 77, 122, 0.85);
    color: #fff;
    padding: 20px 0;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

header h1 {
    font-size: 1.8em;
}

header nav ul {
    list-style: none;
    display: flex;
    justify-content: flex-end;
    gap: 20px;
}

header nav ul li a {
    color: #fff;
    text-decoration: none;
    font-weight: 500;
    padding: 8px 12px;
    border-radius: 5px;
    transition: background 0.3s;
}

header nav ul li a:hover {
    background: rgba(255, 255, 255, 0.2);
}

.menu-ul {
    padding-right: 30px;
}

.img-frame {
    height: 200px;
    border-radius: 30px;
}

.logo-header {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    object-fit: cover;
}


.hero {
    background: linear-gradient(to bottom right, rgba(0, 77, 122, 0.9), rgba(0, 191, 255, 0.9)), url('placeholder4.jpg') center/cover;
    color: #fff;
    text-align: center;
    padding: 100px 20px;
    border-bottom: 5px solid #004d7a;
}

.hero h2 {
    font-size: 3em;
    margin-bottom: 20px;
}

.btn {
    display: inline-block;
    margin-top: 20px;
    padding: 12px 24px;
    background: #ff7f50;
    color: #fff;
    text-decoration: none;
    border-radius: 30px;
    font-weight: 700;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.2);
    transition: background 0.3s, transform 0.2s;
}

.btn:hover {
    background: #e56739;
    transform: translateY(-2px);
}

.section {
    padding: 60px 20px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 10px;
    margin: 20px auto;
    max-width: 1200px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.research-items {
    display: flex;
    flex-wrap: wrap;
    gap: 30px;
    justify-content: center;
}

.research-item {
    flex: 1 1 300px;
    text-align: center;
    padding: 20px;
    border-radius: 10px;
    background: linear-gradient(to bottom, #f5f7fa, #fff);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s;
}

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

footer {
    background: #222;
    color: #ccc;
    text-align: center;
    padding: 20px 0;
    font-size: 0.9em;
}