/* Palet terkunci (study-focus): tanpa ungu, tanpa gradien/glow/shadow. */
:root {
  --page: #F8FAFC; --card: #FFFFFF; --border: #E2E8F0; --secondary: #F1F5F9;
  --ink: #0F172A; --ink2: #1E293B; --ink3: #334155; --muted: #475569;
  --accent: #0454D4; --ok: #15803d; --bad: #b91c1c; --warnbg: #fef3c7;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--page); color: var(--ink); font-family: system-ui, -apple-system, "Segoe UI", sans-serif; line-height: 1.5; }
a { color: var(--accent); }
.topbar { display: flex; justify-content: space-between; align-items: center; padding: 12px 20px; background: var(--card); border-bottom: 1px solid var(--border); }
.wordmark { font-weight: 800; font-size: 1.1rem; text-decoration: none; color: var(--ink); }
.topbar nav a { margin-left: 14px; text-decoration: none; }
main { max-width: 1060px; margin: 0 auto; padding: 20px; }
.footer { max-width: 1060px; margin: 0 auto; padding: 8px 20px 28px; color: var(--muted); font-size: .85rem; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 18px; margin-bottom: 16px; }
.card h2, .card h3 { margin-top: 0; }
.btn { display: inline-block; background: var(--accent); color: #fff; border: 1px solid var(--accent); border-radius: 10px; padding: 9px 16px; text-decoration: none; cursor: pointer; font-size: 1rem; }
.btn.secondary { background: var(--secondary); color: var(--ink2); border-color: var(--border); }
.btn.danger { background: #fff; color: var(--bad); border-color: var(--bad); }
.pill { display: inline-block; border: 1px solid var(--border); border-radius: 10px; padding: 6px 12px; margin-right: 8px; text-decoration: none; color: var(--ink2); background: var(--card); }
.pill.active { background: var(--accent); color: #fff; border-color: var(--accent); }
.badge { display: inline-block; font-size: .8rem; font-weight: 700; border: 1px solid var(--border); border-radius: 10px; padding: 2px 8px; background: var(--secondary); color: var(--ink3); }
.badge.draft { background: var(--warnbg); color: #92400e; border-color: #fde68a; }
.badge.tahan { background: #fee2e2; color: var(--bad); border-color: #fecaca; }
.warn { background: var(--warnbg); border: 1px solid #fde68a; border-radius: 10px; padding: 10px 14px; color: #92400e; }
.ok { color: var(--ok); font-weight: 700; }
.bad { color: var(--bad); font-weight: 700; }
.muted { color: var(--muted); }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 14px; }
.soal-wrap { display: flex; gap: 16px; align-items: flex-start; }
.soal-card { flex: 1; max-width: 680px; background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 20px; }
.soal-stem { font-size: 1.42rem; font-weight: 700; line-height: 1.45; }
.daftar-soal { width: 230px; flex-shrink: 0; background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 12px; }
.daftar-soal a { display: inline-block; width: 34px; height: 34px; line-height: 34px; text-align: center; border: 1px solid var(--border); border-radius: 10px; margin: 3px; text-decoration: none; color: var(--ink2); font-size: .9rem; }
/* Batch 4, housekeeping: dulu 50% (lingkaran, radius 17px) sehingga
   bertentangan dengan klaim radius maks 10px di README. Dipilih mengubah
   CSS ke 10px (kotak membulat, bukan lingkaran) agar klaim tetap benar;
   fungsi Daftar Soal tidak berubah. */
.daftar-soal a.sudah { background: var(--secondary); font-weight: 700; }
.daftar-soal a.aktif { border-color: var(--accent); color: var(--accent); font-weight: 800; }
.opsi { display: block; width: 100%; text-align: left; background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 12px; margin: 8px 0; cursor: pointer; font-size: 1rem; }
.opsi input { margin-right: 10px; }
input[type="text"], textarea, select { width: 100%; padding: 9px 12px; border: 1px solid var(--border); border-radius: 10px; font-size: 1rem; background: var(--card); }
label { display: block; margin: 10px 0 4px; font-weight: 600; }
table { width: 100%; border-collapse: collapse; }
th, td { border-bottom: 1px solid var(--border); padding: 8px; text-align: left; vertical-align: top; }
pre { white-space: pre-wrap; word-wrap: break-word; font-family: inherit; }
img.soal-img { max-width: 100%; height: auto; border: 1px solid var(--border); border-radius: 10px; }
.tutornav a { margin-right: 12px; }
.timer { font-weight: 800; font-size: 1.1rem; }
@media (max-width: 700px) {
  .soal-wrap { flex-direction: column; }
  .daftar-soal { width: 100%; }
  .soal-card { max-width: 100%; }
}
@media print {
  .topbar, .tutornav, .footer, .noprint { display: none !important; }
  main { max-width: 100%; }
}