:root {
  --biru: #0354c9; --biru-tua: #0a3a8c; --kuning: #f9b718; --kuning-muda: #fff4d6;
  --teks: #14213d; --abu: #5b6577; --garis: #dbe2ee; --latar: #f5f8fe; --kartu: #ffffff;
  --benar: #12805c; --benar-latar: #e3f6ee; --salah: #c0392b; --salah-latar: #fdeceb;
  --radius: 14px; --bayang: 0 2px 10px rgba(20, 33, 61, .08);
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; font-family: Inter, system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif; color: var(--teks); background: var(--latar); line-height: 1.55; }
img { max-width: 100%; }
a { color: var(--biru); }
h1, h2, h3 { line-height: 1.2; margin: 0 0 .5rem; }
h1 { font-size: 1.7rem; } h2 { font-size: 1.3rem; } h3 { font-size: 1.05rem; }
p { margin: 0 0 .8rem; }

.atas { position: sticky; top: 0; z-index: 10; display: flex; align-items: center; justify-content: space-between; gap: .5rem; padding: .6rem 1rem; background: var(--kartu); border-bottom: 3px solid var(--kuning); }
.merek { display: flex; align-items: center; gap: .5rem; text-decoration: none; color: var(--biru); font-weight: 700; font-size: 1.15rem; }
.merek b { color: var(--kuning); }
.menu { display: flex; align-items: center; gap: .9rem; font-size: .92rem; }
.menu a { text-decoration: none; color: var(--teks); }
#app { max-width: 980px; margin: 0 auto; padding: 1rem 1rem 3rem; outline: none; }
.muat, .kosong { color: var(--abu); text-align: center; padding: 2rem 0; }
.kaki { max-width: 980px; margin: 0 auto; padding: 1rem 1rem 2rem; font-size: .8rem; color: var(--abu); border-top: 1px solid var(--garis); }

.tombol { display: inline-flex; align-items: center; justify-content: center; gap: .4rem; border: 2px solid var(--biru); background: var(--biru); color: #fff; padding: .65rem 1.1rem; border-radius: 10px; font: inherit; font-weight: 600; text-decoration: none; cursor: pointer; min-height: 44px; }
.tombol:hover { background: var(--biru-tua); border-color: var(--biru-tua); }
.tombol.sekunder { background: #fff; color: var(--biru); }
.tombol.sekunder:hover { background: var(--latar); }
.tombol.kuning { background: var(--kuning); border-color: var(--kuning); color: #1c1917; }
.tombol.kecil { padding: .35rem .8rem; min-height: 36px; font-size: .88rem; color: #fff; }
.tombol[disabled] { opacity: .5; cursor: not-allowed; }
:focus-visible { outline: 3px solid var(--kuning); outline-offset: 2px; }

.hero { text-align: center; padding: 1rem 0 1.5rem; }
.hero img { width: min(300px, 70%); mix-blend-mode: multiply; }
.hero p { color: var(--abu); max-width: 560px; margin: .6rem auto 0; }
.jalur { margin-top: 1.5rem; }
.jalur > h2 { display: flex; align-items: center; gap: .6rem; }
.jalur > h2::after { content: ""; flex: 1; height: 2px; background: var(--garis); }
.grid { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
.kartu { background: var(--kartu); border: 1px solid var(--garis); border-radius: var(--radius); padding: 1rem; box-shadow: var(--bayang); display: flex; flex-direction: column; gap: .5rem; }
.kartu .harga { font-size: 1.35rem; font-weight: 700; color: var(--biru); }
.kartu .bawah { margin-top: auto; display: flex; gap: .5rem; flex-wrap: wrap; }
.chip { display: inline-block; padding: .1rem .55rem; border-radius: 99px; background: #e8f0fd; color: var(--biru-tua); font-size: .76rem; font-weight: 600; }
.chip.kuning { background: var(--kuning-muda); color: #7a5600; }
.chip.hijau { background: var(--benar-latar); color: var(--benar); }
.chip.abu { background: #eef0f4; color: var(--abu); }
.chips { display: flex; flex-wrap: wrap; gap: .35rem; }
.catatan { background: var(--kuning-muda); border-left: 4px solid var(--kuning); padding: .7rem .9rem; border-radius: 8px; font-size: .9rem; }
.jejak { font-size: .88rem; margin-bottom: .6rem; }

.sesi { display: grid; gap: .5rem; grid-template-columns: 1fr auto; align-items: center; }
.sesi + .sesi { margin-top: .75rem; }
.sesi .info { display: flex; flex-direction: column; gap: .3rem; }
.sesi .aksi { display: flex; flex-direction: column; gap: .4rem; align-items: stretch; min-width: 150px; }
@media (max-width: 560px) { .sesi { grid-template-columns: 1fr; } .sesi .aksi { flex-direction: row; flex-wrap: wrap; } }

.formkode { display: flex; gap: .5rem; flex-wrap: wrap; margin: 1rem 0; }
.formkode input { flex: 1; min-width: 220px; font: inherit; font-size: 1.1rem; letter-spacing: .08em; text-transform: uppercase; padding: .65rem .8rem; border: 2px solid var(--garis); border-radius: 10px; }
.pesan { padding: .7rem .9rem; border-radius: 8px; margin: .6rem 0; }
.pesan.ok { background: var(--benar-latar); color: var(--benar); }
.pesan.err { background: var(--salah-latar); color: var(--salah); }

/* Ujian */
.bar { position: sticky; top: 58px; z-index: 9; background: var(--kartu); border: 1px solid var(--garis); border-radius: var(--radius); padding: .6rem .9rem; display: flex; align-items: center; justify-content: space-between; gap: .5rem; box-shadow: var(--bayang); }
.bar .judul { font-weight: 700; }
.bar .sub { font-size: .8rem; color: var(--abu); }
.timer { font-variant-numeric: tabular-nums; font-size: 1.5rem; font-weight: 700; color: var(--biru); background: #e8f0fd; padding: .15rem .7rem; border-radius: 10px; }
.timer.hampir { color: #fff; background: var(--salah); animation: kedip 1s infinite; }
@keyframes kedip { 50% { opacity: .65; } }
.ujian { display: grid; gap: 1rem; grid-template-columns: 1fr 250px; margin-top: 1rem; align-items: start; }
@media (max-width: 760px) { .ujian { grid-template-columns: 1fr; } }
.soal { background: var(--kartu); border: 1px solid var(--garis); border-radius: var(--radius); padding: 1rem; }
.soal .meta { font-size: .8rem; color: var(--abu); margin-bottom: .5rem; }
.soal .tanya { white-space: pre-line; font-size: 1.05rem; margin-bottom: .8rem; }
.soal .gambar { overflow-x: auto; margin-bottom: .8rem; }
.soal .gambar img { height: auto; max-width: min(100%, 520px); }
.opsi { display: grid; gap: .5rem; }
.o { display: flex; align-items: center; gap: .7rem; text-align: left; width: 100%; font: inherit; color: inherit; background: #fff; border: 2px solid var(--garis); border-radius: 12px; padding: .65rem .8rem; min-height: 48px; cursor: pointer; }
.o:hover { border-color: var(--biru); }
.o .h { flex: none; width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center; background: #eef2fa; font-weight: 700; font-size: .9rem; }
.o.pilih { border-color: var(--biru); background: #eaf1fe; }
.o.pilih .h { background: var(--biru); color: #fff; }
.o img { max-height: 74px; width: auto; }
.opsi.gambar { grid-template-columns: repeat(auto-fill, minmax(130px, 1fr)); }
.opsi.gambar .o { flex-direction: column; justify-content: center; text-align: center; padding: .5rem; }
.nav { display: flex; gap: .5rem; flex-wrap: wrap; margin-top: 1rem; }
.nav .ragu { margin-left: auto; }
.tombol.ragu.aktif { background: var(--kuning); border-color: var(--kuning); color: #1c1917; }
.papan { background: var(--kartu); border: 1px solid var(--garis); border-radius: var(--radius); padding: .8rem; }
.papan h3 { font-size: .95rem; }
.nomor { display: grid; grid-template-columns: repeat(auto-fill, minmax(38px, 1fr)); gap: .35rem; }
.nomor button { height: 38px; border: 2px solid var(--garis); background: #fff; border-radius: 8px; font: inherit; font-weight: 600; cursor: pointer; }
.nomor button.isi { background: var(--biru); border-color: var(--biru); color: #fff; }
.nomor button.ragu { background: var(--kuning); border-color: var(--kuning); color: #1c1917; }
.nomor button.kini { outline: 3px solid var(--teks); outline-offset: 1px; }
.legenda { display: flex; flex-wrap: wrap; gap: .5rem; font-size: .75rem; color: var(--abu); margin-top: .6rem; }
.legenda i { display: inline-block; width: 12px; height: 12px; border-radius: 3px; margin-right: 4px; vertical-align: -1px; border: 2px solid var(--garis); }
.legenda .a { background: var(--biru); border-color: var(--biru); } .legenda .b { background: var(--kuning); border-color: var(--kuning); }

.modal { position: fixed; inset: 0; background: rgba(20, 33, 61, .55); display: grid; place-items: center; padding: 1rem; z-index: 50; }
.modal[hidden] { display: none; }
.modal .isi { background: #fff; border-radius: var(--radius); padding: 1.2rem; max-width: 420px; width: 100%; }
.modal .tombolan { display: flex; gap: .5rem; justify-content: flex-end; flex-wrap: wrap; margin-top: 1rem; }

/* Hasil */
.skor { text-align: center; padding: 1.2rem 1rem; background: linear-gradient(160deg, #fff, #eaf1fe); }
.skor .angka { font-size: 3.2rem; font-weight: 800; color: var(--biru); line-height: 1; }
.skor .rinci { display: flex; justify-content: center; gap: 1.2rem; flex-wrap: wrap; margin-top: .6rem; }
.skor .rinci b { display: block; font-size: 1.3rem; }
.batang { background: #eef2fa; border-radius: 99px; height: 12px; overflow: hidden; }
.batang > i { display: block; height: 100%; background: var(--biru); }
.kat { display: grid; grid-template-columns: 170px 1fr 70px; gap: .6rem; align-items: center; margin: .5rem 0; font-size: .92rem; }
@media (max-width: 560px) { .kat { grid-template-columns: 1fr 60px; } .kat .batang { grid-column: 1 / -1; order: 3; } }
.tinjau { margin-top: 1rem; }
.tinjau .item { border: 1px solid var(--garis); border-left-width: 6px; border-radius: 10px; background: #fff; padding: .8rem; margin: .7rem 0; }
.tinjau .item.benar { border-left-color: var(--benar); } .tinjau .item.salah { border-left-color: var(--salah); } .tinjau .item.kosong { border-left-color: var(--kuning); }
.tinjau .tanya { white-space: pre-line; margin: .3rem 0; }
.tinjau .jwb { display: grid; gap: .2rem; font-size: .92rem; margin: .5rem 0; }
.tinjau .bahas { background: var(--latar); border-radius: 8px; padding: .6rem .8rem; font-size: .92rem; }
.tinjau .gambar img { max-width: min(100%, 420px); height: auto; }
.tinjau .pg img { height: 46px; width: auto; vertical-align: middle; }
.saring { display: flex; gap: .4rem; flex-wrap: wrap; margin: .6rem 0; }
.saring button { border: 2px solid var(--garis); background: #fff; border-radius: 99px; padding: .3rem .9rem; font: inherit; cursor: pointer; }
.saring button.on { background: var(--biru); border-color: var(--biru); color: #fff; }
.tabel { width: 100%; border-collapse: collapse; font-size: .92rem; }
.tabel th, .tabel td { text-align: left; padding: .5rem; border-bottom: 1px solid var(--garis); }

@media (max-width: 560px) {
  .atas { position: static; flex-wrap: wrap; justify-content: center; row-gap: .3rem; }
  .menu { gap: .7rem; font-size: .85rem; }
  .bar { top: 0; }
  #app { padding: .8rem .8rem 3rem; }
  h1 { font-size: 1.45rem; }
}