:root {
  --bg: #f4f2ee;
  --surface: #ffffff;
  --ink: #16202e;
  --ink-2: #4a5566;
  --ink-3: #7c8696;
  --line: #e2ded6;
  --primary: #1f4fd1;
  --primary-ink: #ffffff;
  --primary-soft: #e6ecfb;
  --done: #1f8a5b;
  --done-soft: #def2e8;
  --ragu: #d98a0b;
  --ragu-soft: #fdf0d8;
  --danger: #c43c2f;
  --danger-soft: #fbe5e2;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(22,32,46,.06), 0 8px 24px rgba(22,32,46,.06);
  --sans: "Plus Jakarta Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --serif: "Source Serif 4", Georgia, serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
[hidden] { display: none !important; }
h1, h2, h3 { line-height: 1.2; margin: 0 0 .5em; }
button, input, select { font: inherit; color: inherit; }

/* ---------- elemen umum ---------- */
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 24px; }
.eyebrow { text-transform: uppercase; letter-spacing: .08em; font-size: .75rem; font-weight: 700; color: var(--primary); margin: 0 0 .6em; }
.pill { font-size: .8rem; font-weight: 600; padding: 6px 12px; border-radius: 999px; background: var(--primary-soft); color: var(--primary); }

.btn {
  border: 1px solid var(--line); background: var(--surface); color: var(--ink);
  padding: 10px 16px; border-radius: 10px; font-weight: 600; cursor: pointer;
  transition: background .15s, border-color .15s, transform .05s;
}
.btn:hover { border-color: var(--ink-3); }
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.btn.primary { background: var(--primary); border-color: var(--primary); color: var(--primary-ink); }
.btn.primary:hover { filter: brightness(1.08); }
.btn.danger { background: var(--danger-soft); border-color: transparent; color: var(--danger); }
.btn.ghost { background: transparent; }
.btn.big { padding: 14px 20px; font-size: 1.02rem; }
.btn.block { width: 100%; }
:focus-visible { outline: 3px solid color-mix(in srgb, var(--primary) 45%, transparent); outline-offset: 2px; }

.topbar { display: flex; align-items: center; justify-content: space-between; padding: 18px 28px; max-width: 1180px; margin: 0 auto; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 1.1rem; }
.brand-mark { width: 32px; height: 32px; border-radius: 9px; background: var(--ink); color: #fff; display: grid; place-items: center; font-weight: 800; }
.brand-mark.sm { width: 28px; height: 28px; font-size: .9rem; }

/* ---------- home ---------- */
.home { max-width: 1180px; margin: 0 auto; padding: 24px 28px 64px; display: grid; grid-template-columns: 1.15fr 1fr; gap: 48px; align-items: start; }
.home h1 { font-size: clamp(2rem, 4.2vw, 3.1rem); letter-spacing: -.02em; font-weight: 800; max-width: 14ch; }
.lead { font-size: 1.08rem; color: var(--ink-2); max-width: 52ch; }
.struktur { width: 100%; border-collapse: collapse; margin-top: 28px; font-size: .93rem; background: var(--surface); border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); }
.struktur th, .struktur td { text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--line); }
.struktur th { font-size: .75rem; text-transform: uppercase; letter-spacing: .06em; color: var(--ink-3); }
.struktur td:nth-child(n+2), .struktur th:nth-child(n+2) { text-align: right; white-space: nowrap; font-variant-numeric: tabular-nums; }
.struktur .grp td { background: #faf8f4; font-weight: 700; font-size: .78rem; color: var(--ink-2); text-transform: uppercase; letter-spacing: .05em; }
.struktur tfoot td { font-weight: 800; border-bottom: 0; }

.form { display: flex; flex-direction: column; gap: 14px; position: sticky; top: 20px; }
.form h2 { font-size: 1.25rem; }
.form label { display: flex; flex-direction: column; gap: 6px; font-size: .86rem; font-weight: 600; color: var(--ink-2); }
.form input, .form select { padding: 11px 12px; border: 1px solid var(--line); border-radius: 10px; background: #fff; font-weight: 500; color: var(--ink); width: 100%; min-width: 0; }
.form input:focus, .form select:focus { border-color: var(--primary); outline: none; box-shadow: 0 0 0 3px var(--primary-soft); }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.mode { border: 0; padding: 0; margin: 4px 0 0; display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.mode legend { font-size: .86rem; font-weight: 600; color: var(--ink-2); margin-bottom: 6px; }
.form .radio { flex-direction: row; align-items: flex-start; gap: 10px; border: 1px solid var(--line); border-radius: 10px; padding: 12px; cursor: pointer; }
.form .radio:has(input:checked) { border-color: var(--primary); background: var(--primary-soft); }
.radio input { width: auto; margin-top: 3px; accent-color: var(--primary); }
.radio span { display: flex; flex-direction: column; }
.radio b { color: var(--ink); font-size: .92rem; }
.radio small { font-weight: 500; color: var(--ink-3); }
.demo-note { margin: 0; font-size: .85rem; color: var(--ragu); font-weight: 600; }

/* ---------- intro subtes ---------- */
#v-intro { min-height: 100vh; display: grid; place-items: center; padding: 24px 16px; }
.intro { max-width: 560px; width: 100%; padding: 36px; }
.intro h2 { font-size: 1.8rem; letter-spacing: -.01em; }
.intro-meta { color: var(--ink-2); font-weight: 600; margin-top: -4px; }
.rules { padding-left: 20px; color: var(--ink-2); margin: 20px 0; }
.rules li { margin: 6px 0; }
.intro-progress { font-size: .85rem; color: var(--ink-3); }
.intro .btn { width: 100%; }

/* ---------- ruang ujian ---------- */
#v-ujian { height: 100vh; display: flex; flex-direction: column; }
.exambar { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 10px 20px; background: var(--ink); color: #fff; }
.exambar .brand-mark { background: #fff; color: var(--ink); }
.exambar-left { display: flex; gap: 12px; align-items: center; min-width: 0; }
.ex-subtes { font-weight: 700; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.ex-peserta { font-size: .8rem; opacity: .7; }
.timer { font-variant-numeric: tabular-nums; font-weight: 800; font-size: 1.25rem; padding: 6px 14px; border-radius: 10px; background: rgba(255,255,255,.1); letter-spacing: .02em; }
.timer.warn { background: var(--ragu); color: #fff; }
.timer.crit { background: var(--danger); color: #fff; animation: pulse 1s infinite; }
@keyframes pulse { 50% { opacity: .7; } }

.exam { flex: 1; min-height: 0; display: grid; grid-template-columns: 1fr 290px; gap: 16px; padding: 16px; max-width: 1400px; width: 100%; margin: 0 auto; }
.soal-pane { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); display: flex; flex-direction: column; min-height: 0; }
.soal-head { display: flex; justify-content: space-between; align-items: center; padding: 14px 22px; border-bottom: 1px solid var(--line); font-size: .9rem; color: var(--ink-2); }
.tipe-soal { font-size: .75rem; font-weight: 700; padding: 4px 10px; border-radius: 999px; background: var(--primary-soft); color: var(--primary); }
.soal-scroll { flex: 1; overflow-y: auto; padding: 22px; }
.bacaan { font-family: var(--serif); font-size: 1.04rem; line-height: 1.7; background: #faf8f4; border: 1px solid var(--line); border-radius: 12px; padding: 18px 22px; margin-bottom: 18px; max-height: 46vh; overflow-y: auto; }
.bacaan h4 { font-family: var(--sans); margin: 0 0 .6em; }
.bacaan p { margin: 0 0 .8em; }
.stimulus { margin-bottom: 14px; }
.pertanyaan { font-size: 1.04rem; margin-bottom: 18px; }
.pertanyaan p { margin: 0 0 .6em; }
.soal-scroll table { border-collapse: collapse; margin: 10px 0; font-family: var(--sans); font-size: .92rem; }
.soal-scroll th, .soal-scroll td, #pembahasan th, #pembahasan td { border: 1px solid var(--line); padding: 6px 10px; text-align: left; }
.soal-scroll th, #pembahasan th { background: #f5f3ef; }

.opsi { display: flex; flex-direction: column; gap: 10px; }
.opsi button { display: flex; gap: 14px; align-items: flex-start; text-align: left; border: 1.5px solid var(--line); background: #fff; border-radius: 12px; padding: 12px 14px; cursor: pointer; font-weight: 500; transition: border-color .12s, background .12s; }
.opsi button:hover { border-color: var(--ink-3); }
.opsi .huruf { flex: none; width: 28px; height: 28px; border-radius: 8px; display: grid; place-items: center; font-weight: 800; background: #f1efea; font-size: .88rem; }
.opsi button[aria-pressed="true"] { border-color: var(--primary); background: var(--primary-soft); }
.opsi button[aria-pressed="true"] .huruf { background: var(--primary); color: #fff; }

.pgk { width: 100%; border-collapse: collapse; }
.pgk th, .pgk td { border: 1px solid var(--line); padding: 10px 12px; }
.pgk th { background: #f5f3ef; font-size: .8rem; text-transform: uppercase; letter-spacing: .05em; }
.pgk td.c { text-align: center; width: 84px; }
.pgk input { width: 20px; height: 20px; accent-color: var(--primary); cursor: pointer; }

.isian input { font-size: 1.1rem; padding: 12px 14px; border: 1.5px solid var(--line); border-radius: 12px; width: 260px; max-width: 100%; }
.isian input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-soft); }
.isian small { display: block; color: var(--ink-3); margin-top: 6px; }

.kunci-demo { margin-top: 18px; padding: 12px 14px; border: 1px dashed var(--ragu); background: var(--ragu-soft); border-radius: 10px; font-size: .9rem; }

.soal-nav { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 12px 22px; border-top: 1px solid var(--line); }
.ragu { display: flex; align-items: center; gap: 8px; font-weight: 600; cursor: pointer; padding: 8px 14px; border-radius: 10px; background: var(--ragu-soft); color: #8a5800; }
.ragu input { accent-color: var(--ragu); width: 18px; height: 18px; }

.nav-pane { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; display: flex; flex-direction: column; min-height: 0; overflow-y: auto; }
.nav-pane h3 { font-size: .8rem; text-transform: uppercase; letter-spacing: .06em; color: var(--ink-3); }
.grid-no { display: grid; grid-template-columns: repeat(5, 1fr); gap: 7px; }
.grid-no button { aspect-ratio: 1; border: 1.5px solid var(--line); background: #fff; border-radius: 9px; font-weight: 700; cursor: pointer; font-size: .9rem; font-variant-numeric: tabular-nums; }
.grid-no button.done { background: var(--done); border-color: var(--done); color: #fff; }
.grid-no button.ragu { background: var(--ragu); border-color: var(--ragu); color: #fff; }
.grid-no button.cur { box-shadow: 0 0 0 3px var(--ink); }
.legend { list-style: none; padding: 0; margin: 16px 0; display: flex; flex-wrap: wrap; gap: 12px; font-size: .8rem; color: var(--ink-2); }
.legend li { display: flex; align-items: center; gap: 6px; }
.lg { width: 14px; height: 14px; border-radius: 4px; border: 1.5px solid var(--line); display: inline-block; }
.lg.done { background: var(--done); border-color: var(--done); }
.lg.ragu { background: var(--ragu); border-color: var(--ragu); }
.nav-pane .btn.danger { margin-top: auto; }

/* ---------- hasil ---------- */
.hasil { max-width: 980px; margin: 0 auto; padding: 8px 28px 64px; display: flex; flex-direction: column; gap: 20px; }
.hasil-hero { text-align: center; padding: 36px 24px; }
.skor-besar span { display: block; font-size: clamp(3.5rem, 10vw, 5.5rem); font-weight: 800; letter-spacing: -.03em; line-height: 1; font-variant-numeric: tabular-nums; }
.skor-besar small { color: var(--ink-3); font-weight: 600; }
.h-sub { color: var(--ink-2); margin: 14px 0 0; }
.kirim { font-size: .82rem; color: var(--ink-3); margin: 10px 0 0; }

.pilihan-wrap { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 16px; }
.pil { border-left: 6px solid var(--line); }
.pil.lolos { border-left-color: var(--done); }
.pil.belum { border-left-color: var(--danger); }
.pil.ketat { border-left-color: var(--ragu); }
.pil.ketat .status { background: var(--ragu-soft); color: #8a5800; }
.pil .lbl { font-size: .75rem; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; color: var(--ink-3); }
.pil h3 { margin: 6px 0 2px; font-size: 1.1rem; }
.pil .ptn { color: var(--ink-2); font-size: .9rem; }
.pil .status { display: inline-block; margin-top: 12px; font-weight: 700; padding: 5px 12px; border-radius: 999px; font-size: .88rem; }
.pil.lolos .status { background: var(--done-soft); color: var(--done); }
.pil.belum .status { background: var(--danger-soft); color: var(--danger); }
.pil .det { font-size: .86rem; color: var(--ink-2); margin-top: 8px; }

.bars { display: flex; flex-direction: column; gap: 14px; }
.bar-row { display: grid; grid-template-columns: 230px 1fr 56px; gap: 14px; align-items: center; font-size: .92rem; }
.bar-row .nm b { display: block; }
.bar-row .nm small { color: var(--ink-3); }
.bar-track { height: 12px; background: #efece6; border-radius: 99px; overflow: hidden; }
.bar-fill { height: 100%; background: var(--primary); border-radius: 99px; }
.bar-row .val { font-weight: 800; text-align: right; font-variant-numeric: tabular-nums; }
.catatan { font-size: .82rem; color: var(--ink-3); margin: 20px 0 0; }

.pb-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 8px; }
.pb-head h2 { margin: 0; }
.pb-head select { padding: 8px 10px; border: 1px solid var(--line); border-radius: 10px; max-width: 100%; }
.pb-item { border-top: 1px solid var(--line); padding: 18px 0; }
.pb-item summary { cursor: pointer; display: flex; gap: 10px; align-items: center; font-weight: 600; list-style: none; }
.pb-item summary::-webkit-details-marker { display: none; }
.pb-badge { flex: none; font-size: .75rem; font-weight: 800; padding: 3px 9px; border-radius: 99px; }
.pb-badge.b { background: var(--done-soft); color: var(--done); }
.pb-badge.s { background: var(--danger-soft); color: var(--danger); }
.pb-badge.k { background: #eeece7; color: var(--ink-3); }
.pb-q { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; min-width: 0; color: var(--ink-2); font-weight: 500; }
.pb-body { padding: 12px 0 0; font-size: .95rem; }
.pb-body .bacaan { max-height: 260px; font-size: .95rem; }
.pb-ans { display: flex; flex-wrap: wrap; gap: 8px 20px; margin: 10px 0; font-size: .9rem; }
.pb-expl { background: var(--primary-soft); border-radius: 10px; padding: 12px 14px; }

/* ---------- dialog & toast ---------- */
dialog { border: 0; border-radius: var(--radius); padding: 24px; max-width: 420px; width: calc(100% - 32px); box-shadow: 0 20px 60px rgba(0,0,0,.25); }
dialog::backdrop { background: rgba(22,32,46,.5); }
dialog p { color: var(--ink-2); }
.dlg-btns { display: flex; justify-content: flex-end; gap: 10px; margin-top: 18px; }
.toast { position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%); background: var(--ink); color: #fff; padding: 12px 18px; border-radius: 10px; font-size: .9rem; z-index: 50; box-shadow: var(--shadow); max-width: calc(100% - 32px); }

/* ---------- responsif ---------- */
@media (max-width: 900px) {
  .home { grid-template-columns: 1fr; gap: 28px; padding: 8px 16px 48px; }
  .form { position: static; }
  .topbar { padding: 14px 16px; }
  .exam { grid-template-columns: 1fr; padding: 10px; gap: 10px; grid-template-rows: 1fr auto; }
  #v-ujian { height: 100dvh; }
  .nav-pane { max-height: 190px; padding: 12px; }
  .grid-no { grid-template-columns: repeat(10, 1fr); gap: 5px; }
  .grid-no button { font-size: .78rem; border-radius: 7px; }
  .legend { margin: 10px 0; }
  .soal-scroll { padding: 16px; }
  .soal-head, .soal-nav { padding: 10px 14px; }
  .bacaan { max-height: 38vh; padding: 14px 16px; }
  .hasil { padding: 8px 16px 48px; }
  .bar-row { grid-template-columns: 1fr 56px; }
  .bar-row .bar-track { grid-column: 1 / -1; grid-row: 2; }
}
@media (max-width: 520px) {
  .row2, .mode { grid-template-columns: 1fr; }
  .card { padding: 18px; }
  .intro { padding: 24px; }
  .soal-nav .btn { padding: 9px 10px; font-size: .88rem; }
  .ragu { padding: 8px 10px; font-size: .88rem; }
  .exambar { padding: 8px 12px; }
  .timer { font-size: 1.05rem; padding: 5px 10px; }
}

/* ---------- tautan ---------- */
a.brand { color: inherit; text-decoration: none; }
a.btn { text-decoration: none; display: inline-block; }
.link-rank { text-align: center; font-size: .9rem; margin: 14px 0 0; }
.link-rank a { color: var(--primary); font-weight: 600; }

/* ---------- ruang ujian di HP (iOS & Android) ---------- */
.bacaan-toggle, .btn-nomor, .nav-backdrop { display: none; }
@media (max-width: 900px) {
  /* Halaman di-scroll biasa (tanpa scroll bertumpuk yang "menelan" gesekan jari di iOS). */
  #v-ujian { height: auto; min-height: 100vh; min-height: 100dvh; display: block; }
  .exambar { position: sticky; top: 0; z-index: 20; }
  .exam { display: block; padding: 10px 10px calc(84px + env(safe-area-inset-bottom)); }
  .soal-pane { display: block; }
  .soal-scroll { overflow: visible; padding: 16px; }
  .bacaan { max-height: none; overflow: visible; font-size: 1rem; }
  .bacaan.lipat { display: none; }
  .bacaan-toggle { display: block; width: 100%; text-align: left; margin-bottom: 12px; padding: 11px 14px; border-radius: 10px;
    border: 1px dashed var(--ink-3); background: #faf8f4; color: var(--ink-2); font-weight: 600; font-size: .88rem; cursor: pointer; }
  .soal-scroll table { display: block; max-width: 100%; overflow-x: auto; }
  .soal-scroll table.pgk { display: table; }
  .pgk td.c { width: 64px; }
  .pgk th, .pgk td { padding: 9px 8px; }

  /* Tombol navigasi menempel di bawah layar. */
  .soal-nav { position: fixed; left: 0; right: 0; bottom: 0; z-index: 20; display: grid; grid-template-columns: 48px 1fr 1fr 56px; gap: 6px;
    background: var(--surface); border-top: 1px solid var(--line); padding: 8px 10px calc(8px + env(safe-area-inset-bottom));
    box-shadow: 0 -6px 18px rgba(22,32,46,.07); }
  .soal-nav .btn { padding: 10px 6px; font-size: .9rem; white-space: nowrap; }
  .soal-nav .lbl { display: none; }
  #btn-prev, #btn-next { font-size: 1.25rem; line-height: 1; }
  .ragu { justify-content: center; padding: 8px 6px; font-size: .86rem; white-space: nowrap; }
  .btn-nomor { display: block; font-size: .84rem; }

  /* Daftar nomor soal: panel geser dari bawah. */
  .nav-backdrop { display: block; position: fixed; inset: 0; background: rgba(22,32,46,.45); z-index: 25; }
  .nav-pane { position: fixed; left: 0; right: 0; bottom: 0; z-index: 30; max-height: 75vh; max-height: 75dvh;
    border-radius: 18px 18px 0 0; padding: 18px 16px calc(18px + env(safe-area-inset-bottom));
    transform: translateY(105%); transition: transform .22s ease; box-shadow: 0 -12px 40px rgba(0,0,0,.2); }
  .nav-pane.buka { transform: none; }
  .nav-pane { overflow: hidden; }
  .grid-no { grid-template-columns: repeat(auto-fill, minmax(44px, 1fr)); gap: 8px; overflow-y: auto; min-height: 0; flex: 0 1 auto; padding: 3px; }
  .grid-no button { font-size: .9rem; border-radius: 9px; }
  .nav-pane .btn.danger { margin-top: 8px; }
}
@media (max-width: 360px) {
  .soal-nav { grid-template-columns: 42px 1fr 1fr 48px; gap: 5px; padding-left: 8px; padding-right: 8px; }
  .ragu { font-size: .8rem; }
  .btn-nomor { font-size: .78rem; }
}
.brand-mark { flex: none; }
.exambar-left > div { min-width: 0; }
.ex-peserta { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.timer { flex: none; }