* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: #f4f6f8;
    color: #2d3436;
    padding: 30px 15px;
}

.container {
    max-width: 640px;
    margin: 0 auto;
    background: #ffffff;
    border-radius: 10px;
    padding: 30px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
}

h1 {
    font-size: 22px;
    color: #1e272e;
    margin-bottom: 6px;
}

.subtitle {
    font-size: 14px;
    color: #636e72;
    margin-bottom: 24px;
}

.alert-sukses {
    background: #d4edda;
    color: #155724;
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 14px;
}

.tabel-penilaian {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 24px;
}

.tabel-penilaian th,
.tabel-penilaian td {
    text-align: center;
    padding: 10px 6px;
    border-bottom: 1px solid #eaeaea;
    font-size: 13px;
}

.tabel-penilaian th {
    background: #f0f2f5;
    color: #2d3436;
    font-weight: 600;
}

.tabel-penilaian .kolom-bagian {
    text-align: left;
    font-weight: 500;
}

.tabel-penilaian input[type="radio"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: #0984e3;
}

.pilihan-semester {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.opsi-semester {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 400;
    background: #f0f2f5;
    padding: 8px 14px;
    border-radius: 8px;
    cursor: pointer;
}

.opsi-semester input[type="radio"] {
    width: 16px;
    height: 16px;
    accent-color: #0984e3;
}

.section-bagian {
    margin-bottom: 22px;
}

.section-title {
    font-size: 14px;
    font-weight: 700;
    color: #2d3436;
    margin-bottom: 8px;
    padding-bottom: 4px;
    border-bottom: 2px solid #0984e3;
}

.kolom-pertanyaan {
    text-align: left !important;
    font-weight: 400 !important;
}

.form-group {
    margin-bottom: 18px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 6px;
    color: #2d3436;
}

.form-group textarea,
.form-group input[type="text"] {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid #dcdde1;
    border-radius: 8px;
    font-size: 14px;
    font-family: inherit;
    resize: vertical;
}

.form-group textarea:focus,
.form-group input[type="text"]:focus {
    outline: none;
    border-color: #0984e3;
}

.btn-kirim {
    width: 100%;
    padding: 12px;
    background: #0984e3;
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}

.btn-kirim:hover {
    background: #0768b3;
}

@media (max-width: 480px) {
    .tabel-penilaian th,
    .tabel-penilaian td {
        font-size: 11px;
        padding: 8px 4px;
    }
}