:root {
  --navy: #0b3d91;
  --navy-d: #072a66;
  --navy-l: #e7eefb;
  --bg: #eef1f5;
  --card: #fff;
  --line: #d5dbe5;
  --ink: #1c2333;
  --muted: #5d6678;
  --green: #1f9d55;
  --green-d: #17803f;
  --red: #d64040;
  --amber: #e3a008;
  --gray-btn: #6b7385;
  --radius: 6px;
  --kiri: 330px;
  --shadow: 0 1px 2px rgba(16, 24, 40, .06), 0 1px 3px rgba(16, 24, 40, .08);
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; }
body {
  background: var(--bg);
  color: var(--ink);
  font: 15px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
}
button { font: inherit; cursor: pointer; }
input, select { font: inherit; }

/* ---------- bilah atas ---------- */
.topbar {
  background: var(--navy);
  color: #fff;
  display: grid;
  grid-template-columns: minmax(170px, auto) 1fr minmax(170px, auto);
  align-items: center;
  gap: 16px;
  padding: 10px 20px;
  border-bottom: 4px solid #f2b705;
}
.timer {
  background: #fff; color: var(--navy-d); border-radius: var(--radius);
  padding: 4px 14px; text-align: center; justify-self: start; min-width: 160px;
}
.timer span { display: block; font-size: 11px; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); }
.timer b { font-size: 24px; font-variant-numeric: tabular-nums; letter-spacing: .03em; }
.timer.warn b { color: var(--red); }
.brand { display: flex; align-items: center; gap: 12px; justify-self: start; }
.brand .logo {
  width: 42px; height: 42px; border-radius: 50%; background: #fff; color: var(--navy);
  display: grid; place-items: center; font-weight: 800; font-size: 12px; letter-spacing: .03em;
}
.brand b { display: block; font-size: 16px; }
.brand span { display: block; font-size: 12px; opacity: .85; }
.judul { text-align: center; font-weight: 700; font-size: 16px; }
.judul small { display: block; font-weight: 400; font-size: 13px; opacity: .9; }
.identitas { justify-self: end; text-align: right; font-size: 13px; line-height: 1.35; }
.identitas span { opacity: .75; font-size: 11px; text-transform: uppercase; letter-spacing: .06em; margin-right: 6px; }
.identitas div { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 280px; }

/* ---------- tata letak ujian ---------- */
.panel { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); }
.cact {
  display: grid;
  grid-template-columns: min(var(--kiri), 40%) 10px minmax(0, 1fr) 230px;   /* kolom kiri maksimal 40% agar soal tetap lega */
  gap: 0 12px;
  padding: 14px 18px 0;
  height: calc(100vh - 66px - 64px);
  min-height: 460px;
}
.kolom { overflow: auto; }
.kiri { padding: 14px 16px; font-size: 14px; }
.kiri h3 { margin: 0 0 6px; font-size: 13px; text-transform: uppercase; letter-spacing: .06em; color: var(--navy-d); }
.kiri section + section { margin-top: 16px; padding-top: 14px; border-top: 1px solid var(--line); }
.kiri .contoh { color: var(--muted); }
.kiri .stim { background: #f7f9fc; border: 1px solid #c9d3e3; border-radius: 4px; padding: 10px 12px; }
.kiri .stim.aktif { border-color: var(--navy); box-shadow: inset 3px 0 0 var(--navy); }
.stim table { border-collapse: collapse; margin: 10px 0 2px; font-size: 13px; }
.stim th, .stim td { border: 1px solid #9aa6b8; padding: 3px 10px; text-align: right; }
.stim th:first-child, .stim td:first-child { text-align: left; }
.stim th { background: #e3e9f2; }
.geser {
  cursor: col-resize; border-radius: 4px; background: #c9d0db; align-self: stretch;
  margin: 0 -1px; touch-action: none;
}
.geser:hover, .geser.aktif { background: #8f9bb0; }

.tengah { display: flex; flex-direction: column; min-height: 0; }
.qhead {
  display: flex; justify-content: space-between; align-items: center;
  padding: 12px 18px; border-bottom: 1px solid var(--line);
  background: var(--navy-l); border-radius: var(--radius) var(--radius) 0 0;
}
.qhead h2 { margin: 0; font-size: 17px; color: var(--navy-d); }
.qhead span { font-size: 12px; color: var(--muted); }
.qbody { padding: 18px; flex: 1; overflow: auto; }
.qtext { font-size: 16px; margin: 0 0 14px; white-space: pre-line; }
.qfig { margin: 0 0 14px; }
.qfig .fig { width: 64px; height: 64px; display: block; }
.seq { display: inline-flex; gap: 8px; flex-wrap: wrap; }
.rows { display: inline-flex; flex-direction: column; gap: 8px; }
.opts { display: flex; flex-direction: column; gap: 8px; }
.opt {
  display: grid; grid-template-columns: 34px 1fr; align-items: center; gap: 12px;
  text-align: left; background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 9px 12px; color: var(--ink);
}
.opt:hover { border-color: #9fb3d6; background: #fafcff; }
.opt .L {
  width: 30px; height: 30px; border-radius: 50%; border: 2px solid #9aa6b8;
  display: grid; place-items: center; font-weight: 700; color: var(--muted); font-size: 14px;
}
.opt .fig { width: 56px; height: 56px; display: block; }
.opt.sel { border-color: var(--navy); background: var(--navy-l); box-shadow: inset 0 0 0 1px var(--navy); }
.opt.sel .L { background: var(--navy); border-color: var(--navy); color: #fff; }
.note { margin-top: 12px; font-size: 13px; padding: 8px 12px; border-radius: 4px; }
.note.unsaved { background: #fff6e0; color: #7a5200; border: 1px solid #f0d48a; }
.note.saved { background: #e8f6ee; color: #145c33; border: 1px solid #b5e0c6; }
.actions {
  display: flex; justify-content: flex-end; gap: 10px; padding: 12px 18px;
  border-top: 1px solid var(--line); background: #fafbfd; border-radius: 0 0 var(--radius) var(--radius);
}
.btn {
  border: 0; border-radius: var(--radius); padding: 10px 18px; font-weight: 600; color: #fff; background: var(--gray-btn);
}
.btn:disabled { opacity: .45; cursor: not-allowed; }
.btn.save { background: var(--green); }
.btn.save:hover:not(:disabled) { background: var(--green-d); }
.btn.primary { background: var(--navy); }
.btn.primary:hover { background: var(--navy-d); }
.btn.ghost { background: #fff; color: var(--navy); border: 1px solid #b9c6dd; }
.btn.danger { background: var(--red); }

.kanan { padding: 12px; display: flex; flex-direction: column; gap: 10px; }
.kanan h3 { margin: 0; font-size: 13px; text-transform: uppercase; letter-spacing: .06em; color: var(--navy-d); }
.kanan .info { font-size: 13px; color: var(--muted); }
.kanan .info b { color: var(--ink); }
.grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 6px; }
.num {
  height: 34px; border: 1px solid #b8c1cf; border-radius: 4px; background: #fff; color: var(--ink);
  font-weight: 700; font-size: 13px; font-variant-numeric: tabular-nums;
}
.num.ok { background: var(--green); border-color: var(--green); color: #fff; }
.num.mid { background: var(--amber); border-color: var(--amber); color: #fff; }
.num.bad { background: var(--red); border-color: var(--red); color: #fff; }
.num.cur { outline: 3px solid var(--navy); outline-offset: 1px; }
.num:hover { filter: brightness(.93); }
.legend { display: flex; flex-direction: column; gap: 4px; font-size: 12px; color: var(--muted); }
.legend i { display: inline-block; width: 13px; height: 13px; border-radius: 3px; vertical-align: -2px; margin-right: 6px; border: 1px solid #b8c1cf; }

.bawah { height: 64px; display: flex; align-items: center; justify-content: center; gap: 14px; font-size: 13px; color: var(--muted); }
.btn-selesai { background: var(--red); color: #fff; border: 0; border-radius: var(--radius); padding: 11px 40px; font-weight: 700; letter-spacing: .03em; }
.btn-selesai:hover { filter: brightness(.95); }

/* ---------- halaman umum ---------- */
.page { max-width: 920px; margin: 28px auto; padding: 0 20px 40px; }
.page .panel { padding: 22px 26px; margin-bottom: 18px; }
.page h1 { font-size: 22px; margin: 0 0 4px; color: var(--navy-d); }
.page h2 { font-size: 17px; margin: 0 0 12px; color: var(--navy-d); }
.lead { color: var(--muted); margin: 0 0 18px; }
.modes { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin: 0 0 22px; }
.mode-card {
  display: grid; grid-template-columns: auto 1fr; gap: 4px 12px; align-items: start; cursor: pointer;
  border: 2px solid var(--line); border-radius: 8px; padding: 14px 16px; background: #fff;
}
.mode-card input { grid-row: span 2; margin: 3px 0 0; width: 18px; height: 18px; accent-color: var(--navy); }
.mode-card b { font-size: 17px; color: var(--navy-d); }
.mode-card span { font-size: 13px; color: var(--muted); }
.mode-card:hover { border-color: #9fb3d6; }
.mode-card:has(input:checked) { border-color: var(--navy); background: var(--navy-l); }
.umpan { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin: 12px 0 8px; font-size: 14px; }
.form { display: grid; grid-template-columns: 1fr 1fr; gap: 14px 18px; }
.form label { display: flex; flex-direction: column; gap: 5px; font-size: 13px; font-weight: 600; color: var(--muted); }
.form .full { grid-column: 1 / -1; }
.form input, .form select { border: 1px solid #b9c3d3; border-radius: var(--radius); padding: 9px 11px; color: var(--ink); background: #fff; }
.form input:focus, .form select:focus { outline: 2px solid #9db8ea; border-color: var(--navy); }
.form-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 20px; }
table.data { width: 100%; border-collapse: collapse; font-size: 14px; }
table.data th, table.data td { padding: 7px 10px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
table.data th { font-size: 12px; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); background: #f5f7fa; }
table.data td.n, table.data th.n { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
table.data tr.tes td { font-weight: 700; background: #f5f7fa; }
table.data tr.sub td { color: var(--muted); font-size: 13px; }
table.data tr.sub td:first-child { padding-left: 28px; }
table.data tr.total td { font-weight: 700; border-top: 2px solid var(--ink); }
ol.rules { margin: 0; padding-left: 20px; }
ol.rules li { margin: 0 0 6px; }
.kv { display: grid; grid-template-columns: 160px 1fr; gap: 4px 12px; font-size: 14px; margin: 0 0 6px; }
.kv dt { color: var(--muted); }
.kv dd { margin: 0; font-weight: 600; }
.bar { height: 8px; background: #e3e8ef; border-radius: 4px; overflow: hidden; min-width: 80px; }
.bar i { display: block; height: 100%; background: var(--green); }
.small { font-size: 12px; color: var(--muted); }

/* ---------- pembahasan ---------- */
.filters { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; margin-bottom: 14px; }
.filters select { border: 1px solid #b9c6dd; border-radius: 999px; padding: 5px 12px; color: var(--navy); background: #fff; }
.chip { border: 1px solid #b9c6dd; background: #fff; color: var(--navy); border-radius: 999px; padding: 5px 14px; font-size: 13px; }
.chip.on { background: var(--navy); color: #fff; border-color: var(--navy); }
.rev { padding: 16px 18px !important; }
.rev .head { display: flex; justify-content: space-between; gap: 10px; align-items: baseline; margin-bottom: 8px; }
.rev .head b { color: var(--navy-d); }
.badge { font-size: 12px; font-weight: 700; padding: 2px 10px; border-radius: 999px; white-space: nowrap; }
.badge.full { background: #e3f4ea; color: #146c39; }
.badge.part { background: #fff3d6; color: #805600; }
.badge.zero { background: #fde4e4; color: #9b2222; }
.rev details { margin-bottom: 10px; font-size: 14px; }
.rev summary { cursor: pointer; color: var(--navy); font-weight: 600; }
.rev .qfig .fig { width: 48px; height: 48px; }
.ropts { display: flex; flex-direction: column; gap: 5px; margin: 10px 0; }
.ropt { display: grid; grid-template-columns: 26px 1fr auto; gap: 10px; align-items: center; padding: 6px 10px; border-radius: 4px; border: 1px solid var(--line); font-size: 14px; }
.ropt .L { font-weight: 700; color: var(--muted); }
.ropt .fig { width: 46px; height: 46px; display: block; }
.ropt.key { border-color: #8fd0aa; background: #effaf3; }
.ropt.mine { box-shadow: inset 3px 0 0 var(--navy); }
.ropt.mine.wrong { border-color: #eaa3a3; background: #fdf1f1; }
.ropt em { font-style: normal; font-size: 12px; color: var(--muted); white-space: nowrap; }
.w { display: inline-block; min-width: 22px; text-align: center; border-radius: 4px; font-size: 12px; font-weight: 700; padding: 1px 6px; background: #eef1f6; color: var(--muted); }
.w5 { background: var(--green); color: #fff; }
.bahas { background: #f6f8fb; border-left: 3px solid var(--navy); padding: 9px 12px; font-size: 14px; border-radius: 0 4px 4px 0; }

/* ---------- modal ---------- */
.modal { position: fixed; inset: 0; background: rgba(10, 20, 40, .55); display: grid; place-items: center; padding: 20px; z-index: 10; }
.modal[hidden] { display: none; }
.dialog { background: #fff; border-radius: 8px; max-width: 460px; width: 100%; box-shadow: 0 20px 50px rgba(0, 0, 0, .3); overflow: hidden; }
.dialog h3 { margin: 0; padding: 14px 20px; background: var(--navy); color: #fff; font-size: 16px; }
.dialog p { margin: 16px 20px; }
.dialog .btns { display: flex; justify-content: flex-end; gap: 10px; padding: 12px 20px 18px; }

/* tombol buka-tutup kolom kiri hanya tampil di layar kecil */
.kiri-toggle { display: none; }
button, .opt, .num, .chip { touch-action: manipulation; }

/* ---------- tablet dan HP ---------- */
@media (max-width: 980px) {
  .topbar { grid-template-columns: auto 1fr; padding: 8px 12px; gap: 6px 12px; position: sticky; top: 0; z-index: 5; }
  .judul { grid-column: 1 / -1; grid-row: 2; text-align: left; font-size: 14px; }
  .judul small { font-size: 12px; }
  .timer { min-width: 0; padding: 3px 10px; }
  .timer span { font-size: 9px; }
  .timer b { font-size: 19px; }
  .brand .logo { width: 34px; height: 34px; font-size: 10px; }
  .brand b { font-size: 14px; }
  .identitas { font-size: 12px; }
  .identitas div:first-child { display: none; }   /* NIP disembunyikan agar muat; nama tetap tampil */

  .cact { display: flex; flex-direction: column; height: auto; min-height: 0; gap: 10px; padding: 10px 12px 0; }
  .geser { display: none; }
  .kolom { overflow: visible; }
  .kanan { order: 1; padding: 8px 10px; gap: 6px; }
  .kiri { order: 2; padding: 0; }
  .tengah { order: 3; }

  /* daftar nomor soal menjadi satu baris yang bisa digeser */
  .kanan h3, .kanan .legend { display: none; }
  .kanan .info { font-size: 12px; }
  .kanan .grid { display: flex; overflow-x: auto; gap: 6px; padding: 3px 2px 6px; scroll-snap-type: x proximity; -webkit-overflow-scrolling: touch; }
  .num { flex: 0 0 42px; height: 38px; scroll-snap-align: center; }

  /* instruksi dan kasus dapat dibuka-tutup */
  .kiri-toggle {
    display: flex; justify-content: space-between; align-items: center; width: 100%;
    background: none; border: 0; padding: 12px 14px; font-weight: 700; font-size: 14px; color: var(--navy-d); text-align: left;
  }
  .kiri-toggle span { transition: transform .15s; }
  .kiri.tutup .kiri-toggle span { transform: rotate(-90deg); }
  .kiri.ada-stim .kiri-toggle { background: var(--navy-l); border-radius: var(--radius); }
  .kiri-isi { padding: 0 14px 14px; }
  .kiri.tutup .kiri-isi { display: none; }

  .qhead { padding: 10px 14px; }
  .qbody { padding: 14px; overflow: visible; }
  .qtext { font-size: 16px; }
  .actions {
    position: sticky; bottom: 0; z-index: 4; padding: 10px 12px calc(10px + env(safe-area-inset-bottom));
    box-shadow: 0 -4px 12px rgba(16, 24, 40, .08); border-radius: 0;
  }
  .actions .btn { flex: 1; padding: 13px 16px; font-size: 16px; }
  .bawah { height: auto; flex-wrap: wrap; padding: 14px 12px calc(18px + env(safe-area-inset-bottom)); text-align: center; }
  .btn-selesai { padding: 12px 34px; }

  .form, .modes { grid-template-columns: minmax(0, 1fr); }
  .kv { grid-template-columns: max-content minmax(0, 1fr); gap: 4px 14px; }
  .form input, .form select { font-size: 16px; width: 100%; min-width: 0; }   /* mencegah iPhone memperbesar halaman saat mengetik */
}

@media (max-width: 600px) {
  body { font-size: 15px; }
  .page { margin: 14px auto; padding: 0 12px 30px; }
  .page .panel { padding: 16px; }
  .page h1 { font-size: 19px; }
  .identitas { display: none; }
  .brand > div:last-child { display: none; }
  .judul { grid-column: 2; grid-row: 1; text-align: right; font-size: 13px; line-height: 1.3; }
  .judul small { font-size: 11.5px; }
  .opt { gap: 10px; padding: 9px 10px; grid-template-columns: 30px 1fr; }
  .opt .L { width: 28px; height: 28px; }
  .qfig .fig { width: 52px; height: 52px; }
  .stim table { font-size: 12px; }
  .stim th, .stim td { padding: 3px 6px; }
  table.data { font-size: 13px; }
  table.data th, table.data td { padding: 6px 6px; }
  table.data td:last-child:not(.n), table.data th:last-child:not(.n) { display: none; }   /* bilah persentase */
  table.data tr.sub td:first-child { padding-left: 14px; }
  .ropt { grid-template-columns: 22px 1fr; }
  .ropt > span:last-child { grid-column: 2; justify-self: start; }
  .ropt > span:last-child:empty { display: none; }
  .form-actions { flex-wrap: wrap; }
  .form-actions .btn { flex: 1; }
  .dialog .btns .btn { flex: 1; }
}