:root {
  --latar: #f3f5f8; --muka: #ffffff; --garis: #dde2e9; --teks: #16202c; --redup: #5b6675;
  --aksen: #1f5f99; --aksen-muda: #e6eff8; --bahaya: #b42318; --kuning: #8a5300; --r: 12px;
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--latar); color: var(--teks); }
body { font: 15px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; padding-bottom: calc(64px + env(safe-area-inset-bottom)); }
button, input, textarea { font: inherit; color: inherit; }
.atas { position: sticky; top: 0; z-index: 5; display: flex; align-items: center; gap: 10px; padding: 10px 16px; background: var(--muka); border-bottom: 1px solid var(--garis); }
.merek { display: flex; align-items: center; gap: 8px; font-weight: 800; font-size: 18px; color: var(--teks); text-decoration: none; }
.logo { width: 30px; height: 30px; border-radius: 8px; background: var(--aksen); color: #fff; display: grid; place-items: center; font-weight: 800; font-size: 17px; }
.tab { display: flex; gap: 4px; background: var(--latar); border-radius: 10px; padding: 3px; margin-left: auto; }
.tab button { border: 0; background: none; padding: 8px 12px; border-radius: 8px; font-weight: 650; color: var(--redup); cursor: pointer; }
.tab button[aria-selected="true"] { background: var(--muka); color: var(--teks); box-shadow: 0 1px 2px rgba(0,0,0,.08); }
.tombol { border: 1px solid var(--garis); background: var(--muka); border-radius: 10px; padding: 0 14px; height: 42px; font-weight: 650; cursor: pointer; white-space: nowrap; }
.tombol.utama { background: var(--aksen); border-color: var(--aksen); color: #fff; }
.tombol.utama:disabled { opacity: .6; }
.tombol.kecil { height: 36px; font-size: 14px; }
.tombol.bahaya, .tautan.bahaya { color: var(--bahaya); }
.tautan { border: 0; background: none; color: var(--aksen); font-weight: 600; cursor: pointer; padding: 6px 4px; }
.tautan:disabled { color: var(--garis); cursor: default; }

.kerja { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 20px; max-width: 1280px; margin: 0 auto; padding: 16px; }
.isi, .lihat { min-width: 0; }
.alat { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 12px; }
.bagian { background: var(--muka); border: 1px solid var(--garis); border-radius: var(--r); padding: 4px 14px; margin-bottom: 12px; }
.bagian > summary { cursor: pointer; font-weight: 750; padding: 10px 0; list-style-position: inside; }
.bagian[open] > summary { margin-bottom: 4px; }
.jumlah { display: inline-block; min-width: 22px; padding: 0 7px; border-radius: 11px; background: var(--aksen-muda); color: var(--aksen); font-size: 12px; text-align: center; }
.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px 12px; }
.grid .lebar { grid-column: 1 / -1; }
label { display: block; font-size: 13px; font-weight: 600; color: var(--redup); margin: 2px 0 4px; }
input[type="text"], input[type="month"], input:not([type]), textarea { width: 100%; border: 1px solid var(--garis); border-radius: 9px; padding: 10px 11px; background: #fbfcfd; font-size: 16px; }
input:focus, textarea:focus { outline: 2px solid var(--aksen); outline-offset: -1px; background: #fff; }
textarea { resize: vertical; line-height: 1.4; }
.centang { display: flex; align-items: center; gap: 8px; color: var(--teks); font-size: 15px; font-weight: 500; margin-top: 26px; }
.centang input { width: 20px; height: 20px; }
.kartu { border: 1px solid var(--garis); border-radius: 10px; padding: 12px; margin: 8px 0; background: #fcfdfe; }
.kartu-alat { display: flex; justify-content: flex-end; gap: 10px; margin-top: 6px; }
.tambah { margin: 6px 0 12px; }
.petunjuk { color: var(--redup); font-size: 13px; margin: 8px 0 12px; }
.tengah { text-align: center; }

.lihat { position: sticky; top: 74px; align-self: start; max-height: calc(100vh - 90px); overflow: auto; }
.pilih-tema { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 10px; }
.tema { display: flex; align-items: center; gap: 7px; border: 1px solid var(--garis); background: var(--muka); border-radius: 20px; padding: 7px 13px; font-weight: 600; cursor: pointer; }
.tema i { width: 12px; height: 12px; border-radius: 50%; }
.tema.aktif { border-color: var(--aksen); background: var(--aksen-muda); color: var(--aksen); }
.kertas { display: grid; gap: 12px; }
.halaman { width: 100%; height: auto; display: block; box-shadow: 0 2px 10px rgba(16,24,40,.12); border-radius: 3px; }
.periksa { background: var(--muka); border: 1px solid var(--garis); border-radius: var(--r); padding: 4px 14px 10px; margin-top: 14px; }
.periksa h3 { font-size: 15px; margin: 10px 0 6px; }
.periksa ul { margin: 0; padding-left: 18px; }
.periksa li { margin: 5px 0; font-size: 14px; }
.periksa li.penting { color: var(--bahaya); }
.periksa .bagus { color: #0f7a3f; font-weight: 600; }

.bawah { display: none; }
.roti { position: fixed; left: 50%; bottom: calc(78px + env(safe-area-inset-bottom)); transform: translate(-50%, 20px); opacity: 0; background: #16202c; color: #fff; padding: 10px 16px; border-radius: 10px; font-size: 14px; transition: .2s; pointer-events: none; max-width: calc(100vw - 32px); z-index: 10; }
.roti.muncul { opacity: 1; transform: translate(-50%, 0); }

/* Premium */
.lencana { font-size: 10.5px; font-weight: 800; letter-spacing: .03em; padding: 2px 6px; border-radius: 6px; background: #fff3d6; color: var(--kuning); margin-left: 2px; }
.tema.premium-aktif .lencana { display: none; }
.tombol.emas { background: #f5b83d; border-color: #f5b83d; color: #3d2600; }
.lembar { border: 0; border-radius: 16px; padding: 0; width: min(460px, calc(100vw - 24px)); max-height: calc(100vh - 32px); box-shadow: 0 20px 50px rgba(16,24,40,.3); }
.lembar::backdrop { background: rgba(16,24,40,.45); }
.lembar > div { padding: 20px; }
.lembar h2 { margin: 0 0 4px; font-size: 21px; }
.lembar .harga { font-size: 30px; font-weight: 800; margin: 10px 0 2px; }
.lembar ul { padding-left: 20px; margin: 10px 0; } .lembar li { margin: 5px 0; }
.lembar .penuh { width: 100%; margin-top: 10px; height: 48px; font-size: 16px; }
.lembar .qr { background: #fff; border: 1px solid var(--garis); border-radius: 12px; padding: 10px; margin: 10px auto; width: min(260px, 70vw); }
.lembar .qr img { width: 100%; display: block; image-rendering: pixelated; }
.lembar .nominal { text-align: center; font-size: 28px; font-weight: 800; margin: 4px 0; }
.lembar .status { background: var(--aksen-muda); color: var(--aksen); border-radius: 10px; padding: 10px 12px; margin: 10px 0; font-weight: 600; }
.lembar .pulih { display: flex; gap: 8px; margin-top: 6px; } .lembar .pulih input { flex: 1; min-width: 0; text-transform: uppercase; }
.lembar details { margin-top: 14px; color: var(--redup); font-size: 14px; }
.lembar ol { padding-left: 20px; font-size: 14px; }

/* HP: satu kolom; bilah bawah pindah antara isian & hasil */
@media (max-width: 860px) {
  body { padding-bottom: calc(72px + env(safe-area-inset-bottom)); }
  .atas { padding: 8px 12px; gap: 8px; }
  .merek { font-size: 0; gap: 0; }
  .tab { margin-left: 0; flex: 1; }
  .tab button { flex: 1; padding: 8px 6px; font-size: 14px; }
  .kerja { grid-template-columns: 1fr; padding: 12px; }
  .kerja[data-lihat="isi"] .lihat, .kerja[data-lihat="lihat"] .isi { display: none; }
  .lihat { position: static; max-height: none; overflow: visible; }
  .grid { grid-template-columns: 1fr; }
  .centang { margin-top: 4px; }
  .bawah { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; position: fixed; left: 0; right: 0; bottom: 0; z-index: 5; padding: 8px 12px calc(8px + env(safe-area-inset-bottom)); background: var(--muka); border-top: 1px solid var(--garis); }
  .bawah button { height: 46px; border-radius: 10px; border: 1px solid var(--garis); background: var(--muka); font-weight: 700; }
  .bawah button[aria-pressed="true"] { background: var(--aksen); border-color: var(--aksen); color: #fff; }
}