body {
    font-family: Arial, sans-serif;
    margin: 0;
    background-color: #f5f5f5;
    color: #333;
}
header {
    background: #1e2a38;
    color: white;
    padding: 1rem;
    text-align: center;
}
nav {
    background: #16202b;
    display: flex;
    justify-content: center;
}
nav a {
    color: white;
    padding: 1rem;
    text-decoration: none;
}
nav a:hover {
    background: #0d141c;
}
.container {
    width: 90%;
    max-width: 1200px;
    margin: 2rem auto;
}
h2 {
    text-align: center;
    margin-bottom: 1rem;
}
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}
.card {
    background: white;
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}
.card iframe {
    flex: 1;
    border: none;
    width: 100%;
    height: 400px;
}
.card h3 {
    padding: 1rem;
    background: #f0f0f0;
    margin: 0;
}
footer {
    text-align: center;
    padding: 1rem;
    background: #1e2a38;
    color: white;
    margin-top: 2rem;
}
@media (max-width: 600px) {
    .card iframe {
        height: 300px;
    }
}