/* ------------------------------------------------------------------ *
 * 13. Keadaan kosong dan galat
 * ------------------------------------------------------------------ */

.keadaan-kosong {
    text-align: center;
    padding: 32px 16px;
    color: var(--abu);
}

.keadaan-kosong svg {
    margin-bottom: 12px;
    color: var(--garis);
}

.laman-galat {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 24px 16px;
    text-align: center;
}

.laman-galat__kode {
    font-family: var(--serif);
    font-size: 56px;
    font-weight: 600;
    color: var(--hijau);
    line-height: 1;
    margin-bottom: 8px;
}

/* ------------------------------------------------------------------ *
 * 14. Utilitas
 * ------------------------------------------------------------------ */

.rata-tengah {
    text-align: center;
}

.sembunyi {
    display: none !important;
}

.pisah {
    border: 0;
    border-top: 1px solid var(--garis);
    margin: 20px 0;
}

.jarak-atas {
    margin-top: 16px;
}

.jarak-bawah {
    margin-bottom: 16px;
}

.tanpa-jarak-bawah {
    margin-bottom: 0;
}

/* ------------------------------------------------------------------ *
 * 15. Responsif, mobile-first menuju layar lebar
 * ------------------------------------------------------------------ */

@media (max-width: 480px) {
    .wadah {
        padding: 0 16px;
    }

    h1 {
        font-size: 24px;
    }

    /* Di layar sempit penanda langkah hanya menampilkan angka. */
    .langkah__nama {
        display: none;
    }

    .bidang-baris {
        flex-direction: column;
        gap: 0;
    }

    .bidang-baris > * {
        margin-bottom: 16px;
    }

    .kartu {
        padding: 18px 16px;
    }

    .pita {
        margin: -18px -16px 18px;
    }

    .tombol-baris .tombol {
        width: 100%;
    }

    .rincian {
        grid-template-columns: 1fr;
        gap: 2px 0;
    }

    .rincian dd {
        margin-bottom: 10px;
    }
}

@media (min-width: 481px) and (max-width: 768px) {
    .wadah {
        padding: 0 24px;
    }
}

@media (min-width: 769px) {
    h1 {
        font-size: 32px;
    }

    .wadah {
        max-width: 640px;
    }

    .isi-utama {
        padding: 32px 0 56px;
    }
}

@media (min-width: 1025px) {
    .wadah {
        max-width: 720px;
    }
}

/* Hormati preferensi pengguna yang membatasi animasi. */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
    }
}

/* ------------------------------------------------------------------ *
 * 16. Cetak — bukti pendaftaran muat satu halaman A4
 * ------------------------------------------------------------------ */

@media print {
    @page {
        size: A4;
        margin: 14mm;
    }

    body {
        background: var(--putih);
        color: #000;
        font-size: 12pt;
    }

    .kepala-situs,
    .kaki-situs,
    .tombol,
    .tombol-baris,
    .lewati-ke-isi,
    .tanpa-cetak {
        display: none !important;
    }

    .isi-utama {
        padding: 0;
    }

    .wadah {
        max-width: none;
        padding: 0;
    }

    .kartu {
        border: 1px solid #000;
        box-shadow: none;
        padding: 12mm;
        margin: 0;
        page-break-inside: avoid;
    }

    .pita {
        background: none;
        color: #000;
        border-bottom: 1px solid #000;
        border-radius: 0;
        margin: 0 0 8mm;
        padding: 0 0 4mm;
    }

    .nomor-besar {
        color: #000;
    }

    .lencana {
        border: 1px solid #000 !important;
        background: none !important;
        color: #000 !important;
    }

    a {
        color: #000;
        text-decoration: none;
    }
}