body {
    font-family: "Arial", sans-serif;
    background: #1a1a2e;
    color: #eee;
    margin: 0;
}

header {
    text-align: center;
    padding: 40px 10px;
    background: #16213e;
    border-bottom: 2px solid #53354a;
}

nav {
    text-align: center;
    background: #0f3460;
    padding: 10px;
}
nav a {
    color: #ddd;
    margin: 0 15px;
    text-decoration: none;
    font-weight: bold;
}

.section, .welcome, .preview {
    width: 90%;
    margin: auto;
    padding: 40px 0;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 20px;
}

.card {
    background: #1b1b31;
    padding: 15px;
    border-radius: 8px;
    border: 1px solid #53354a;
}
.card img {
    width: 100%;
    border-radius: 5px;
}

.caption {
    color: #b8b8d1;
    margin-top: 8px;
}

.button {
    display: inline-block;
    padding: 8px 15px;
    background: #53354a;
    color: white;
    text-decoration: none;
    border-radius: 5px;
}

footer {
    text-align: center;
    padding: 20px;
    background: #0f3460;
    margin-top: 40px;
}

.center {
    text-align: center;
    margin-top: 20px;
}