body{
    background:#f1f5f9;
}

.pkks-wrapper{
    max-width:1200px;
    margin:auto;
    padding:20px;
}

.pkks-wrapper h1{
    text-align:center;
    color:#1565c0;
    margin-bottom:30px;
}

.kelas-grid{
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(150px,1fr));
    gap:20px;
}

.kelas-card{
    background:white;
    padding:25px;
    border-radius:16px;
    text-align:center;
    cursor:pointer;
    transition:0.3s;
    font-size:22px;
    font-weight:bold;
    color:#1565c0;
    box-shadow:0 4px 10px rgba(0,0,0,0.1);
}

.kelas-card:hover{
    background:#1565c0;
    color:white;
    transform:translateY(-5px);
}

.pkks-back{
    margin-bottom:20px;
    padding:10px 18px;
    border:none;
    border-radius:10px;
    background:#1565c0;
    color:white;
    cursor:pointer;
}

table{
    width:100%;
    border-collapse:collapse;
    background:white;
}

th, td{
    border:1px solid #ddd;
    padding:10px;
    text-align:center;
}

th{
    background:#1565c0;
    color:white;
}

input, select{
    width:100%;
    padding:8px;
    border:1px solid #ccc;
    border-radius:6px;
}

tr:nth-child(even){
    background:#f9f9f9;
}