/* ════════════════════════════════════════════════════════════════
   KUIS BUNPOU — Styles
   ════════════════════════════════════════════════════════════════ */

/* ──────────── Hero Banner ──────────── */
.bunpou-hero {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
  border-radius: var(--radius-xl);
  padding: 2rem 1.5rem;
  color: #fff;
  text-align: center;
  margin-bottom: 1.25rem;
  position: relative;
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(102,126,234,.4);
}

.bunpou-hero::before {
  content: '';
  position: absolute;
  top: -40px; right: -40px;
  width: 160px; height: 160px;
  border-radius: 50%;
  background: rgba(255,255,255,.12);
}

.bunpou-hero::after {
  content: '';
  position: absolute;
  bottom: -30px; left: -30px;
  width: 110px; height: 110px;
  border-radius: 50%;
  background: rgba(255,255,255,.08);
}

.bunpou-hero-kanji {
  font-size: 44px;
  letter-spacing: 8px;
  opacity: .22;
  font-weight: 700;
  position: relative;
  z-index: 1;
  margin-bottom: 6px;
  animation: kotoba-float 6s ease-in-out infinite;
}

.bunpou-hero-title {
  font-size: 22px;
  font-weight: 800;
  position: relative;
  z-index: 1;
  margin-bottom: 4px;
  letter-spacing: -0.5px;
}

.bunpou-hero-sub {
  font-size: 12px;
  opacity: .8;
  position: relative;
  z-index: 1;
  font-weight: 500;
}

/* ──────────── Bab Grid ──────────── */
.bunpou-bab-grid {
  display: grid;
  grid-template-columns: repeat(10, 1fr);
  gap: 6px;
  margin-bottom: 0.5rem;
}

.bunpou-bab-pill {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  border: 1.5px solid;
  padding: 6px 2px;
  cursor: pointer;
  transition: all 0.15s cubic-bezier(0.34,1.56,0.64,1);
  gap: 1px;
  min-height: 44px;
}

.bbab-lbl {
  font-size: 8px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.3px;
  line-height: 1;
}
.bbab-num {
  font-size: 14px;
  font-weight: 800;
  font-family: var(--font-mono);
  line-height: 1;
}

/* ── Bunpou: Aurora palette per 10 bab ── */

/* Bab 1–10: Deep Indigo */
.bunpou-bab-pill:nth-child(n+1):nth-child(-n+10) { border-color:#a5b4fc; background:#eef2ff; }
.bunpou-bab-pill:nth-child(n+1):nth-child(-n+10) .bbab-num { color:#3730a3; }
.bunpou-bab-pill:nth-child(n+1):nth-child(-n+10) .bbab-lbl { color:#818cf8; }
.bunpou-bab-pill:nth-child(n+1):nth-child(-n+10):hover { border-color:#4f46e5; background:#e0e7ff; box-shadow:0 2px 10px rgba(79,70,229,.35); transform:scale(1.12); }
.bunpou-bab-pill:nth-child(n+1):nth-child(-n+10).active { background:linear-gradient(135deg,#312e81,#4f46e5); border-color:transparent; box-shadow:0 3px 14px rgba(49,46,129,.45); transform:scale(1.05); }

/* Bab 11–20: Electric Violet */
.bunpou-bab-pill:nth-child(n+11):nth-child(-n+20) { border-color:#c4b5fd; background:#f5f3ff; }
.bunpou-bab-pill:nth-child(n+11):nth-child(-n+20) .bbab-num { color:#5b21b6; }
.bunpou-bab-pill:nth-child(n+11):nth-child(-n+20) .bbab-lbl { color:#a78bfa; }
.bunpou-bab-pill:nth-child(n+11):nth-child(-n+20):hover { border-color:#7c3aed; background:#ede9fe; box-shadow:0 2px 10px rgba(124,58,237,.35); transform:scale(1.12); }
.bunpou-bab-pill:nth-child(n+11):nth-child(-n+20).active { background:linear-gradient(135deg,#4c1d95,#7c3aed); border-color:transparent; box-shadow:0 3px 14px rgba(76,29,149,.45); transform:scale(1.05); }

/* Bab 21–30: Vivid Purple */
.bunpou-bab-pill:nth-child(n+21):nth-child(-n+30) { border-color:#d8b4fe; background:#faf5ff; }
.bunpou-bab-pill:nth-child(n+21):nth-child(-n+30) .bbab-num { color:#6d28d9; }
.bunpou-bab-pill:nth-child(n+21):nth-child(-n+30) .bbab-lbl { color:#c084fc; }
.bunpou-bab-pill:nth-child(n+21):nth-child(-n+30):hover { border-color:#9333ea; background:#f3e8ff; box-shadow:0 2px 10px rgba(147,51,234,.35); transform:scale(1.12); }
.bunpou-bab-pill:nth-child(n+21):nth-child(-n+30).active { background:linear-gradient(135deg,#581c87,#9333ea); border-color:transparent; box-shadow:0 3px 14px rgba(88,28,135,.45); transform:scale(1.05); }

/* Bab 31–40: Fuchsia */
.bunpou-bab-pill:nth-child(n+31):nth-child(-n+40) { border-color:#f0abfc; background:#fdf4ff; }
.bunpou-bab-pill:nth-child(n+31):nth-child(-n+40) .bbab-num { color:#86198f; }
.bunpou-bab-pill:nth-child(n+31):nth-child(-n+40) .bbab-lbl { color:#e879f9; }
.bunpou-bab-pill:nth-child(n+31):nth-child(-n+40):hover { border-color:#c026d3; background:#fae8ff; box-shadow:0 2px 10px rgba(192,38,211,.35); transform:scale(1.12); }
.bunpou-bab-pill:nth-child(n+31):nth-child(-n+40).active { background:linear-gradient(135deg,#701a75,#c026d3); border-color:transparent; box-shadow:0 3px 14px rgba(112,26,117,.45); transform:scale(1.05); }

/* Bab 41–50: Warm Rose */
.bunpou-bab-pill:nth-child(n+41):nth-child(-n+50) { border-color:#fda4af; background:#fff1f2; }
.bunpou-bab-pill:nth-child(n+41):nth-child(-n+50) .bbab-num { color:#9f1239; }
.bunpou-bab-pill:nth-child(n+41):nth-child(-n+50) .bbab-lbl { color:#fb7185; }
.bunpou-bab-pill:nth-child(n+41):nth-child(-n+50):hover { border-color:#e11d48; background:#ffe4e6; box-shadow:0 2px 10px rgba(225,29,72,.35); transform:scale(1.12); }
.bunpou-bab-pill:nth-child(n+41):nth-child(-n+50).active { background:linear-gradient(135deg,#881337,#e11d48); border-color:transparent; box-shadow:0 3px 14px rgba(136,19,55,.45); transform:scale(1.05); }

.bunpou-bab-pill.active .bbab-num { color:#fff !important; }
.bunpou-bab-pill.active .bbab-lbl { color:rgba(255,255,255,.75) !important; }

/* Dark mode — idle */
html.dark-mode .bunpou-bab-pill:nth-child(n+1):nth-child(-n+10)  { background:rgba(79,70,229,.12);  border-color:rgba(129,140,248,.35); }
html.dark-mode .bunpou-bab-pill:nth-child(n+11):nth-child(-n+20) { background:rgba(124,58,237,.12); border-color:rgba(167,139,250,.35); }
html.dark-mode .bunpou-bab-pill:nth-child(n+21):nth-child(-n+30) { background:rgba(147,51,234,.12); border-color:rgba(192,132,252,.35); }
html.dark-mode .bunpou-bab-pill:nth-child(n+31):nth-child(-n+40) { background:rgba(192,38,211,.12); border-color:rgba(240,171,252,.35); }
html.dark-mode .bunpou-bab-pill:nth-child(n+41):nth-child(-n+50) { background:rgba(225,29,72,.12);  border-color:rgba(253,164,175,.35); }
html.dark-mode .bunpou-bab-pill:nth-child(n+1):nth-child(-n+10) .bbab-num  { color:#a5b4fc; }
html.dark-mode .bunpou-bab-pill:nth-child(n+11):nth-child(-n+20) .bbab-num { color:#c4b5fd; }
html.dark-mode .bunpou-bab-pill:nth-child(n+21):nth-child(-n+30) .bbab-num { color:#d8b4fe; }
html.dark-mode .bunpou-bab-pill:nth-child(n+31):nth-child(-n+40) .bbab-num { color:#f0abfc; }
html.dark-mode .bunpou-bab-pill:nth-child(n+41):nth-child(-n+50) .bbab-num { color:#fda4af; }
/* Dark mode — ACTIVE */
html.dark-mode .bunpou-bab-pill:nth-child(n+1):nth-child(-n+10).active  { background:linear-gradient(135deg,#312e81,#4f46e5) !important; border-color:transparent !important; box-shadow:0 3px 14px rgba(49,46,129,.55) !important; }
html.dark-mode .bunpou-bab-pill:nth-child(n+11):nth-child(-n+20).active { background:linear-gradient(135deg,#4c1d95,#7c3aed) !important; border-color:transparent !important; box-shadow:0 3px 14px rgba(76,29,149,.55) !important; }
html.dark-mode .bunpou-bab-pill:nth-child(n+21):nth-child(-n+30).active { background:linear-gradient(135deg,#581c87,#9333ea) !important; border-color:transparent !important; box-shadow:0 3px 14px rgba(88,28,135,.55) !important; }
html.dark-mode .bunpou-bab-pill:nth-child(n+31):nth-child(-n+40).active { background:linear-gradient(135deg,#701a75,#c026d3) !important; border-color:transparent !important; box-shadow:0 3px 14px rgba(112,26,117,.55) !important; }
html.dark-mode .bunpou-bab-pill:nth-child(n+41):nth-child(-n+50).active { background:linear-gradient(135deg,#881337,#e11d48) !important; border-color:transparent !important; box-shadow:0 3px 14px rgba(136,19,55,.55) !important; }
html.dark-mode .bunpou-bab-pill.active .bbab-num { color:#fff !important; }
html.dark-mode .bunpou-bab-pill.active .bbab-lbl { color:rgba(255,255,255,.8) !important; }

.bunpou-bab-pill.no-data {
  opacity: .3;
  cursor: not-allowed;
  pointer-events: none;
}


/* ──────────── Mode Selector ──────────── */
.bunpou-mode-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-bottom: 1rem;
}

/* ──────────── Mulai Button ──────────── */
.btn-bunpou {
  background: linear-gradient(135deg, #667eea, #764ba2) !important;
  border-color: transparent !important;
  color: #fff !important;
  font-weight: 700 !important;
  box-shadow: 0 4px 16px rgba(102,126,234,.35) !important;
}

.btn-bunpou:hover {
  background: linear-gradient(135deg, #5568e0, #6a3fa0) !important;
  box-shadow: 0 8px 24px rgba(102,126,234,.45) !important;
  transform: translateY(-2px) !important;
}

/* ──────────── Pola Kalimat Display ──────────── */
.bunpou-pola-display {
  text-align: center;
  padding: 1.25rem 0.5rem 0.75rem;
}

.bunpou-pola-text {
  font-size: 22px;
  font-weight: 700;
  color: var(--gray-900);
  line-height: 1.4;
  font-family: var(--font-jp);
  margin-bottom: 6px;
  background: linear-gradient(135deg, #667eea, #764ba2);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.bunpou-contoh-jp {
  font-size: 15px;
  font-family: var(--font-jp);
  color: var(--gray-700);
  margin-bottom: 4px;
  line-height: 1.6;
}

.bunpou-contoh-hira {
  font-size: 13px;
  font-family: var(--font-jp);
  color: var(--gray-400);
  font-style: italic;
  margin-bottom: 4px;
}

.bunpou-pola-sub {
  font-size: 12px;
  color: var(--gray-400);
  line-height: 1.5;
}

/* ──────────── Option Bunpou (2-column grid) ──────────── */
.bunpou-option {
  font-family: var(--font-jp);
  font-size: 13px;
  line-height: 1.5;
  text-align: center;
  padding: 14px 10px;
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: center;
  word-break: break-word;
}

.bunpou-opt-pola {
  display: block;
  font-size: 13px;
  font-weight: 700;
  color: var(--gray-900);
  line-height: 1.5;
}

.bunpou-opt-contoh {
  display: block;
  font-size: 11px;
  color: var(--gray-400);
  font-style: italic;
}

/* ──────────── Penjelasan Card (setelah menjawab) ──────────── */
.bunpou-penjelasan {
  margin-top: 0.75rem;
  padding: 0.875rem 1rem;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, #f0f4ff, #f5f3ff);
  border-left: 3px solid #764ba2;
  animation: bunpouSlideIn 0.3s ease forwards;
  opacity: 0;
}

@keyframes bunpouSlideIn {
  to { opacity: 1; transform: translateY(0); }
  from { opacity: 0; transform: translateY(6px); }
}

.bunpou-penjelasan-title {
  font-size: 11px;
  font-weight: 700;
  color: #764ba2;
  text-transform: uppercase;
  letter-spacing: .06em;
  margin-bottom: 4px;
}

.bunpou-penjelasan-body {
  font-size: 13px;
  color: var(--gray-700);
  line-height: 1.6;
}

.bunpou-catatan {
  margin-top: 6px;
  font-size: 11px;
  color: var(--gray-500);
  font-style: italic;
}

/* ──────────── Bab Badge ──────────── */
.bunpou-bab-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 10px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(102,126,234,.12), rgba(118,75,162,.12));
  color: #764ba2;
  font-family: var(--font-mono);
}

/* ──────────── Stat Bar Horizontal (Bunpou) ──────────── */
.bunpou-stat-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: nowrap;
  margin-top: 8px;
  margin-bottom: 2px;
}

.bunpou-stat-item {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  font-family: var(--font-mono);
  flex: 1;
  justify-content: center;
  border: 1.5px solid transparent;
}

.bunpou-stat-item.green {
  background: rgba(16,185,129,.1);
  color: #059669;
  border-color: rgba(16,185,129,.2);
}
.bunpou-stat-item.red {
  background: rgba(239,68,68,.1);
  color: #dc2626;
  border-color: rgba(239,68,68,.2);
}
.bunpou-stat-item.amber {
  background: rgba(245,158,11,.1);
  color: #d97706;
  border-color: rgba(245,158,11,.2);
}
.bunpou-stat-item.gray {
  background: rgba(107,114,128,.08);
  color: var(--gray-600);
  border-color: rgba(107,114,128,.15);
}

.bunpou-stat-num {
  font-size: 15px;
  font-weight: 800;
  line-height: 1;
}
.bunpou-stat-lbl {
  font-size: 10px;
  font-weight: 600;
  font-family: var(--font-jp);
  letter-spacing: 0.2px;
  opacity: .85;
}

/* Dark mode */
html.dark-mode .bunpou-stat-item.green  { background: rgba(16,185,129,.15); color: #34d399; border-color: rgba(52,211,153,.25); }
html.dark-mode .bunpou-stat-item.red    { background: rgba(239,68,68,.15);  color: #f87171; border-color: rgba(248,113,113,.25); }
html.dark-mode .bunpou-stat-item.amber  { background: rgba(245,158,11,.15); color: #fbbf24; border-color: rgba(251,191,36,.25); }
html.dark-mode .bunpou-stat-item.gray   { background: rgba(255,255,255,.06); color: #9ca3af; border-color: rgba(255,255,255,.1); }

/* ──────────── Responsive ──────────── */
@media (max-width: 540px) {
  .bunpou-bab-grid  { grid-template-columns: repeat(7, 1fr); }
  .bunpou-mode-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 400px) {
  .bunpou-bab-grid      { grid-template-columns: repeat(5, 1fr); }
  .bunpou-hero-title    { font-size: 18px; }
  .bunpou-pola-text     { font-size: 17px; }
}

/* ──────────── Dark Mode ──────────── */
html.dark-mode .bunpou-hero {
  background: linear-gradient(135deg, #0f0e2e 0%, #1a1245 50%, #2d0a3d 100%) !important;
  box-shadow: 0 8px 32px rgba(102,126,234,.15) !important;
}

html.dark-mode .bunpou-bab-pill {
  background: #1c1b29 !important;
  border-color: rgba(255,255,255,.08) !important;
  color: #6b7280 !important;
}

html.dark-mode .bunpou-bab-pill:hover {
  background: rgba(102,126,234,.12) !important;
  border-color: rgba(129,140,248,.4) !important;
  color: #a5b4fc !important;
}

html.dark-mode .bunpou-bab-pill.active {
  background: linear-gradient(135deg, #4f60c8, #6236a0) !important;
  color: #fff !important;
}

html.dark-mode .bunpou-pola-text {
  background: linear-gradient(135deg, #818cf8, #c084fc);
  -webkit-background-clip: text;
  background-clip: text;
}

html.dark-mode .bunpou-contoh-jp    { color: #d1d5db !important; }
html.dark-mode .bunpou-contoh-hira  { color: #4b5563 !important; }
html.dark-mode .bunpou-opt-pola     { color: #e0e7ff !important; }
html.dark-mode .bunpou-opt-contoh   { color: #4b5563 !important; }

html.dark-mode .bunpou-penjelasan {
  background: linear-gradient(135deg, #1a1938, #1e1535) !important;
  border-left-color: #818cf8 !important;
}

html.dark-mode .bunpou-penjelasan-title { color: #818cf8 !important; }
html.dark-mode .bunpou-penjelasan-body  { color: #d1d5db !important; }
html.dark-mode .bunpou-catatan          { color: #6b7280 !important; }

html.dark-mode .bunpou-bab-badge {
  background: rgba(129,140,248,.15) !important;
  color: #818cf8 !important;
}

/* ══════════════════════════════════════════
   BUNPOU SUB-NAV (Kuis / N5 / N4)
══════════════════════════════════════════ */
.bunpou-sub-nav {
  display: flex;
  gap: 6px;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}

.bunpou-sub-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 16px;
  border-radius: 99px;
  border: 1.5px solid #e0e7ff;
  background: #f5f3ff;
  color: #5b21b6;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  transition: all .18s ease;
  flex: 1;
  justify-content: center;
}
.bunpou-sub-btn:hover {
  background: #ede9fe;
  border-color: #7c3aed;
  transform: translateY(-1px);
}
.bunpou-sub-btn--active {
  background: linear-gradient(135deg, #667eea, #764ba2) !important;
  border-color: transparent !important;
  color: #fff !important;
  box-shadow: 0 3px 12px rgba(102,126,234,.35);
}
.bunpou-btn-icon { font-size: 16px; line-height: 1; }

html.dark-mode .bunpou-sub-btn {
  background: rgba(79,70,229,.12);
  border-color: rgba(129,140,248,.3);
  color: #a5b4fc;
}
html.dark-mode .bunpou-sub-btn:hover {
  background: rgba(79,70,229,.2);
  border-color: #818cf8;
}
html.dark-mode .bunpou-sub-btn--active {
  background: linear-gradient(135deg, #4f46e5, #7c3aed) !important;
  color: #fff !important;
}

/* ══════════════════════════════════════════
   BNP CARD — Referensi Pola Kalimat N5
══════════════════════════════════════════ */
.bnp-card {
  background: var(--white, #fff);
  border: 1.5px solid #e0e7ff;
  border-radius: 16px;
  overflow: hidden;
  margin-bottom: .875rem;
  box-shadow: 0 2px 12px rgba(102,126,234,.08);
}
.bnp-card-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: .75rem 1rem;
  background: linear-gradient(135deg, #eef2ff, #f5f3ff);
  border-bottom: 1px solid #e0e7ff;
}
.bnp-bab-badge {
  background: linear-gradient(135deg, #667eea, #764ba2);
  color: #fff;
  font-size: 11px;
  font-weight: 800;
  padding: 3px 10px;
  border-radius: 99px;
  white-space: nowrap;
  font-family: var(--font-mono);
  letter-spacing: .04em;
}
.bnp-card-title {
  font-size: 13px;
  font-weight: 700;
  color: #4c1d95;
  line-height: 1.3;
}
.bnp-pola-list {
  padding: .5rem .875rem .875rem;
}
.bnp-pola-item {
  padding: .65rem 0;
  border-bottom: 1px dashed #ede9fe;
}
.bnp-pola-item:last-child { border-bottom: none; }
.bnp-pola-formula {
  font-family: var(--font-jp, serif);
  font-size: 14px;
  font-weight: 800;
  color: #5b21b6;
  margin-bottom: 2px;
  background: linear-gradient(135deg, #667eea, #764ba2);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.bnp-pola-arti {
  font-size: 12px;
  color: #6b7280;
  margin-bottom: 4px;
  font-weight: 600;
}
.bnp-pola-example {
  background: #f5f3ff;
  border-left: 3px solid #a78bfa;
  border-radius: 6px;
  padding: 5px 10px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.bnp-jp {
  font-family: var(--font-jp, serif);
  font-size: 13px;
  color: #3730a3;
  font-weight: 600;
}
.bnp-id {
  font-size: 11px;
  color: #9ca3af;
  font-style: italic;
}

/* Dark mode bnp-card */
html.dark-mode .bnp-card {
  background: #1c1b29;
  border-color: rgba(255,255,255,.08);
  box-shadow: 0 2px 12px rgba(0,0,0,.25);
}
html.dark-mode .bnp-card-header {
  background: rgba(79,70,229,.12);
  border-bottom-color: rgba(255,255,255,.06);
}
html.dark-mode .bnp-card-title { color: #c4b5fd; }
html.dark-mode .bnp-pola-item  { border-bottom-color: rgba(255,255,255,.07); }
html.dark-mode .bnp-pola-formula {
  background: linear-gradient(135deg,#a5b4fc,#c084fc);
  -webkit-background-clip: text;
  background-clip: text;
}
html.dark-mode .bnp-pola-arti  { color: #9ca3af; }
html.dark-mode .bnp-pola-example { background: rgba(79,70,229,.1); border-left-color: #7c3aed; }
html.dark-mode .bnp-jp         { color: #c4b5fd; }
html.dark-mode .bnp-id         { color: #6b7280; }

/* ══════════════════════════════════════════
   MATERI BUNPOU SCREEN
══════════════════════════════════════════ */
.materi-hero {
  background: linear-gradient(135deg,#312e81 0%,#4f46e5 50%,#7c3aed 100%);
  border-radius: var(--radius-xl);
  padding: 1.75rem 1.5rem;
  color:#fff;
  text-align:center;
  margin-bottom:1rem;
  position:relative;
  overflow:hidden;
  box-shadow:0 8px 32px rgba(79,70,229,.4);
}
.materi-hero-bg {
  position:absolute;inset:0;
  display:flex;align-items:center;justify-content:center;
  font-size:60px;letter-spacing:16px;opacity:.06;
  font-weight:900;pointer-events:none;
}
.materi-hero-content { position:relative;z-index:1; }
.materi-hero-badge {
  display:inline-flex;align-items:center;gap:6px;
  background:rgba(255,255,255,.15);border:1px solid rgba(255,255,255,.2);
  border-radius:99px;padding:4px 14px;font-size:12px;font-weight:700;margin-bottom:8px;
}
.materi-hero-title { font-size:24px;font-weight:900;margin:0 0 4px;letter-spacing:-.5px; }
.materi-hero-sub   { font-size:12px;opacity:.8;font-weight:500; }

/* Level tabs */
.materi-level-tabs {
  display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-bottom:.875rem;
}
.materi-level-tab {
  display:flex;align-items:center;gap:10px;
  padding:10px 14px;border-radius:14px;
  border:1.5px solid #e0e7ff;background:#f5f3ff;
  cursor:pointer;transition:all .18s ease;text-align:left;
}
.materi-level-tab:hover { border-color:#7c3aed;background:#ede9fe;transform:translateY(-1px); }
.materi-level-tab.active {
  background:linear-gradient(135deg,#4f46e5,#7c3aed);
  border-color:transparent;color:#fff;
  box-shadow:0 4px 16px rgba(79,70,229,.35);
}
.materi-tab-icon { font-size:22px;line-height:1;flex-shrink:0; }
.materi-tab-name { font-size:13px;font-weight:800;line-height:1.2; }
.materi-tab-sub  { font-size:11px;opacity:.7;font-weight:600; }

/* Bab jumper */
.materi-bab-jumper {
  display:flex;flex-wrap:wrap;gap:4px;margin-bottom:.875rem;
}
.mb-jump-btn {
  width:32px;height:32px;border-radius:8px;border:1.5px solid #e0e7ff;
  background:#f5f3ff;color:#4f46e5;font-size:11px;font-weight:800;
  cursor:pointer;transition:all .15s ease;font-family:var(--font-mono);
}
.mb-jump-btn:hover { background:#4f46e5;color:#fff;border-color:transparent; }

/* MB Card */
.mb-card {
  background:var(--white,#fff);border:1.5px solid #e0e7ff;
  border-radius:16px;overflow:hidden;margin-bottom:.875rem;
  box-shadow:0 2px 12px rgba(79,70,229,.07);
}
.mb-header {
  display:flex;align-items:center;gap:12px;
  padding:.875rem 1rem;
  background:linear-gradient(135deg,#eef2ff,#f5f3ff);
  border-bottom:1px solid #e0e7ff;
}
.mb-bab-num {
  background:linear-gradient(135deg,#4f46e5,#7c3aed);
  color:#fff;font-size:10px;font-weight:800;
  padding:4px 10px;border-radius:99px;white-space:nowrap;
  font-family:var(--font-mono);letter-spacing:.04em;flex-shrink:0;
}
.mb-judul  { font-size:14px;font-weight:800;color:#3730a3;font-family:var(--font-jp); }
.mb-topik  { font-size:11px;color:#7c3aed;font-weight:600; }
.mb-body   { padding:.875rem 1rem; }
.mb-penjelasan {
  display:flex;gap:8px;align-items:flex-start;
  background:#f5f3ff;border-radius:10px;padding:8px 10px;
  font-size:12px;color:#4c1d95;line-height:1.6;margin-bottom:.75rem;
}
.mb-pen-icon { font-size:16px;flex-shrink:0; }
.mb-struktur {
  background:linear-gradient(135deg,#eef2ff,#f5f3ff);
  border:1px solid #c7d2fe;border-radius:8px;
  padding:6px 10px;font-size:12px;margin-bottom:.75rem;
}
.mb-str-label { font-weight:700;color:#4f46e5; }
.mb-str-val   { font-family:var(--font-jp);color:#312e81;font-weight:600; }
.mb-pola-list { display:flex;flex-direction:column;gap:.5rem; }
.mb-pola-item {
  padding:.625rem .75rem;
  border:1px solid #ede9fe;border-radius:10px;
  background:#fafafe;
}
.mb-formula {
  font-family:var(--font-jp);font-size:14px;font-weight:800;
  background:linear-gradient(135deg,#4f46e5,#7c3aed);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;
  background-clip:text;margin-bottom:2px;
}
.mb-arti  { font-size:11px;color:#6b7280;font-weight:600;margin-bottom:5px; }
.mb-example {
  background:#eef2ff;border-left:3px solid #818cf8;
  border-radius:6px;padding:5px 10px;
  display:flex;flex-direction:column;gap:2px;
}
.mb-jp { font-family:var(--font-jp);font-size:13px;color:#3730a3;font-weight:600; }
.mb-id { font-size:11px;color:#9ca3af;font-style:italic; }

/* Dark mode */
html.dark-mode .materi-hero { box-shadow:0 8px 32px rgba(0,0,0,.4); }
html.dark-mode .materi-level-tab { background:rgba(79,70,229,.1);border-color:rgba(129,140,248,.2);color:#a5b4fc; }
html.dark-mode .materi-level-tab.active { background:linear-gradient(135deg,#4338ca,#6d28d9);color:#fff; }
html.dark-mode .mb-jump-btn { background:rgba(79,70,229,.1);border-color:rgba(129,140,248,.2);color:#a5b4fc; }
html.dark-mode .mb-jump-btn:hover { background:#4f46e5;color:#fff; }
html.dark-mode .mb-card { background:#1c1b29;border-color:rgba(255,255,255,.07); }
html.dark-mode .mb-header { background:rgba(79,70,229,.1);border-bottom-color:rgba(255,255,255,.06); }
html.dark-mode .mb-judul { color:#c7d2fe; }
html.dark-mode .mb-topik { color:#a78bfa; }
html.dark-mode .mb-penjelasan { background:rgba(79,70,229,.1);color:#c4b5fd; }
html.dark-mode .mb-struktur { background:rgba(79,70,229,.08);border-color:rgba(99,102,241,.2); }
html.dark-mode .mb-str-val { color:#a5b4fc; }
html.dark-mode .mb-pola-item { background:rgba(79,70,229,.06);border-color:rgba(255,255,255,.06); }
html.dark-mode .mb-formula { background:linear-gradient(135deg,#a5b4fc,#c084fc);-webkit-background-clip:text;background-clip:text; }
html.dark-mode .mb-example { background:rgba(79,70,229,.1);border-left-color:#7c3aed; }
html.dark-mode .mb-jp { color:#c4b5fd; }
html.dark-mode .mb-id { color:#6b7280; }

/* ── Per-screen materi nav ── */
.mb-single-wrap { display:flex;flex-direction:column;gap:.75rem; }
.mb-progress-bar-wrap { height:4px;background:#e0e7ff;border-radius:99px;overflow:hidden; }
.mb-progress-bar-fill { height:100%;background:linear-gradient(90deg,#4f46e5,#7c3aed);border-radius:99px;transition:width .3s ease; }
.mb-counter { font-size:11px;font-weight:700;color:#7c3aed;text-align:center;letter-spacing:.04em; }
.mb-nav-btns { display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:.25rem; }
.mb-nav-btn {
  padding:12px;border-radius:12px;border:1.5px solid #e0e7ff;
  background:#f5f3ff;color:#4f46e5;font-size:13px;font-weight:700;
  cursor:pointer;transition:all .18s ease;
}
.mb-nav-btn:hover:not(:disabled) { background:#4f46e5;color:#fff;border-color:transparent;transform:translateY(-1px); }
.mb-nav-btn:disabled { opacity:.3;cursor:not-allowed; }
.mb-nav-next { background:linear-gradient(135deg,#4f46e5,#7c3aed);color:#fff;border-color:transparent;box-shadow:0 3px 12px rgba(79,70,229,.3); }
.mb-nav-next:hover:not(:disabled) { background:linear-gradient(135deg,#4338ca,#6d28d9);transform:translateY(-1px); }
.mb-jump-btn.active { background:#4f46e5;color:#fff;border-color:transparent; }

/* dark mode nav btns */
html.dark-mode .mb-nav-btn { background:rgba(79,70,229,.1);border-color:rgba(129,140,248,.2);color:#a5b4fc; }
html.dark-mode .mb-nav-btn:hover:not(:disabled) { background:#4f46e5;color:#fff; }
html.dark-mode .mb-nav-next { background:linear-gradient(135deg,#4338ca,#6d28d9);color:#fff;border-color:transparent; }
html.dark-mode .mb-progress-bar-wrap { background:rgba(255,255,255,.08); }
html.dark-mode .mb-counter { color:#a78bfa; }

/* ══════════════════════════════════════════
   MATERI BUNPOU — Enhanced Book-Style UI
══════════════════════════════════════════ */

/* Penjelasan panjang (detail) */
.mb-detail {
  font-size: 13px;
  color: #374151;
  line-height: 1.75;
  margin-bottom: .875rem;
  padding: 10px 12px;
  background: #fafafe;
  border-radius: 10px;
  border: 1px solid #e0e7ff;
}

/* Kotak Struktur Kalimat */
.mb-struktur-box {
  background: linear-gradient(135deg,#312e81,#4f46e5);
  border-radius: 12px;
  padding: 10px 14px;
  margin-bottom: .875rem;
  text-align: center;
}
.mb-struktur-box .mb-str-label {
  font-size: 10px;
  font-weight: 700;
  color: rgba(255,255,255,.7);
  letter-spacing: .08em;
  text-transform: uppercase;
  margin-bottom: 4px;
  display: block;
}
.mb-struktur-box .mb-str-val {
  font-size: 15px;
  font-weight: 800;
  color: #fff;
  font-family: var(--font-jp);
  letter-spacing: .02em;
  display: block;
}

/* Kotak Catatan */
.mb-catatan {
  background: #fffbeb;
  border: 1.5px solid #fcd34d;
  border-radius: 10px;
  padding: 10px 12px;
  margin-bottom: .875rem;
}
.mb-cat-label {
  font-size: 11px;
  font-weight: 800;
  color: #92400e;
  margin-bottom: 4px;
  text-transform: uppercase;
  letter-spacing: .06em;
}
.mb-cat-body {
  font-size: 12px;
  color: #78350f;
  line-height: 1.65;
}

/* Judul seksi Pola */
.mb-pola-title {
  font-size: 11px;
  font-weight: 800;
  color: #4f46e5;
  text-transform: uppercase;
  letter-spacing: .08em;
  margin-bottom: .5rem;
}

/* Header tiap pola (nomor + formula + arti) */
.mb-pola-header {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 8px;
}
.mb-pola-num {
  background: linear-gradient(135deg,#4f46e5,#7c3aed);
  color: #fff;
  font-size: 11px;
  font-weight: 800;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
  font-family: var(--font-mono);
}

/* List contoh kalimat bernomor */
.mb-contoh-list {
  display: flex;
  flex-direction: column;
  gap: 5px;
}
.mb-ex-row {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  background: #eef2ff;
  border-left: 3px solid #818cf8;
  border-radius: 6px;
  padding: 6px 10px;
}
.mb-ex-num {
  font-size: 10px;
  font-weight: 800;
  color: #6366f1;
  font-family: var(--font-mono);
  min-width: 14px;
  margin-top: 2px;
}
.mb-ex-text { flex: 1; }
.mb-ex-text .mb-jp { font-family:var(--font-jp);font-size:13px;color:#3730a3;font-weight:600; }
.mb-ex-text .mb-id { font-size:11px;color:#9ca3af;font-style:italic; }

/* Dark mode — new elements */
html.dark-mode .mb-detail { background:rgba(79,70,229,.07);border-color:rgba(99,102,241,.2);color:#d1d5db; }
html.dark-mode .mb-struktur-box { background:linear-gradient(135deg,#1e1b4b,#312e81); }
html.dark-mode .mb-catatan { background:rgba(251,191,36,.07);border-color:rgba(252,211,77,.25); }
html.dark-mode .mb-cat-label { color:#fbbf24; }
html.dark-mode .mb-cat-body  { color:#fde68a; }
html.dark-mode .mb-pola-title { color:#a5b4fc; }
html.dark-mode .mb-ex-row { background:rgba(79,70,229,.1);border-left-color:#7c3aed; }
html.dark-mode .mb-ex-num  { color:#a5b4fc; }
html.dark-mode .mb-ex-text .mb-jp { color:#c4b5fd; }
html.dark-mode .mb-ex-text .mb-id { color:#6b7280; }