/* Dasar Desain */
body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
    color: #333;
}

header {
    background-color: #2c3e50;
    color: white;
    padding: 20px;
    text-align: center;
}

nav {
    background-color: #34495e;
    overflow: hidden;
    display: flex;
    justify-content: center;
}

nav a {
    color: white;
    padding: 14px 20px;
    text-decoration: none;
    text-align: center;
}

nav a:hover {
    background-color: #1abc9c;
}

.container {
    padding: 20px;
    max-width: 1200px;
    margin: auto;
    display: flex;
    flex-wrap: wrap; /* Ini membuat konten turun ke bawah jika layar sempit */
    gap: 20px;
}

.card {
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    flex: 1 1 calc(33.333% - 20px); /* Tampilan 3 kolom di PC */
    min-width: 300px;
}

footer {
    text-align: center;
    padding: 20px;
    background: #2c3e50;
    color: white;
    margin-top: 20px;
}

/* RESPONSIVE: Pengaturan untuk HP */
@media screen and (max-width: 768px) {
    .container {
        flex-direction: column; /* Menjadi 1 kolom di HP */
    }

    nav {
        flex-direction: column;
    }

    .card {
        flex: 1 1 100%;
    }
}