body{margin:0;font-family:Arial,sans-serif;background:#08111f;color:white;line-height:1.6}
nav {
    position: fixed;
    top: 0;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px 40px;
    background: rgba(8,17,31,0.9);
    z-index: 1000;
    box-sizing: border-box;
}


nav ul {
    display: flex;
    gap: 25px;
    list-style: none;
    margin: 0;
    padding: 0;
    flex-wrap: wrap;
}


nav a {
    color: white;
    text-decoration: none;
    font-size: 18px;
    white-space: nowrap;
}
@media (max-width: 900px) {

nav {
    flex-direction: column;
    gap: 15px;
}

nav ul {
    justify-content: center;
}

}
nav ul{display:flex;gap:20px;list-style:none}
nav a{color:white;text-decoration:none}
.hero {
    min-height: 100vh;

    background:
        linear-gradient(
            rgba(4, 12, 30, 0.65),
            rgba(4, 12, 30, 0.75)
        ),
        url("IMG_7154.png");

    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;

    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;

    text-align: center;
}
.hero h1 {
    color: white;
    text-shadow: 0 0 20px rgba(0,0,0,0.8);
}
.btn{display:inline-block;padding:12px 24px;background:#c9a227;color:#08111f;text-decoration:none;border-radius:6px}
section{padding:100px 10%}
h2{color:#c9a227}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:20px}
.card{background:#13233f;padding:20px;border-radius:10px}
.placeholder{padding:40px;border:2px dashed #c9a227;border-radius:10px}
footer{text-align:center;padding:40px;background:#050b14}
.research-subproject {
margin-top: 25px;
padding: 15px;
background: rgba(255,255,255,0.05);
border-radius: 12px;
text-align: left;
}

.research-thumbnail {
width: 100%;
border-radius: 10px;
margin-bottom: 12px;
}

.research-subproject h4 {
color: #c9a227;
margin-bottom: 10px;
}

.paper-button {
display: inline-block;
margin-top: 10px;
padding: 10px 18px;
background: #c9a227;
color: #08111f;
text-decoration: none;
border-radius: 6px;
font-weight: bold;
}

.paper-button:hover {
opacity: 0.9;
}

.research-subproject iframe {
    width: 100%;
    height: 400px;
    border-radius: 10px;
}

.research-directory {

display:flex;
flex-direction:column;
gap:20px;
margin-top:30px;

}


.research-link {

display:block;
background:#1c2d4d;
padding:20px;
border-radius:12px;
text-decoration:none;
color:white;

transition:0.2s;

}


.research-link:hover {

transform:translateY(-5px);

}


.research-link h4 {

color:#c9a227;
margin-bottom:10px;

}


.research-page {

max-width:900px;
margin:auto;
padding:40px;

}


.research-page iframe {

width:100%;
height:600px;
border-radius:12px;

}

.research-directory {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-top: 25px;
}


.research-link {
    display: block;
    padding: 20px;
    background: #1b3157;
    border-radius: 12px;
    text-decoration: none;
    color: white;
}


.research-link h4 {
    color: #c9a227;
    margin-bottom: 10px;
}


.research-link p {
    margin: 0;
}