/* ============================================================
   kanji_tulis.css — Tutorial Cara Tulis (Redesigned Premium)
   ============================================================ */

/* ── Hero Banner ── */
.ktulis-hero-banner {
  background: linear-gradient(135deg, #0f0c29 0%, #302b63 50%, #24243e 100%);
  border-radius: 20px;
  padding: 1.75rem 1.5rem 1.5rem;
  text-align: center;
  margin-bottom: 1.25rem;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.ktulis-hero-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 70% 50%, rgba(139,92,246,.25) 0%, transparent 70%);
  pointer-events: none;
}
.ktulis-hero-chars {
  font-size: clamp(1.8rem, 5vw, 2.5rem);
  font-family: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', serif;
  letter-spacing: .2em;
  opacity: .55;
  margin-bottom: .4rem;
}
.ktulis-hero-title {
  font-size: clamp(1.2rem, 4vw, 1.6rem);
  font-weight: 800;
  margin-bottom: .4rem;
  background: linear-gradient(90deg, #e0c3fc, #8ec5fc);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.ktulis-hero-sub {
  font-size: .82rem;
  opacity: .65;
  color: #fff;
  -webkit-text-fill-color: rgba(255,255,255,.65);
}

/* ── Tab Navigation ── */
.ktulis-tab-nav {
  display: flex;
  gap: 6px;
  margin-bottom: 1.25rem;
  background: var(--white);
  border: 1.5px solid var(--border);
  border-radius: 16px;
  padding: 6px;
  box-shadow: 0 2px 8px rgba(0,0,0,.05);
}
.dark-mode .ktulis-tab-nav {
  background: var(--gray-800);
  border-color: var(--gray-700);
}
.ktulis-tab-btn {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: .7rem .5rem;
  border-radius: 12px;
  border: none;
  background: transparent;
  color: var(--gray-400);
  font-size: .78rem;
  font-weight: 700;
  cursor: pointer;
  transition: all .2s cubic-bezier(.4,0,.2,1);
  letter-spacing: .01em;
}
.ktulis-tab-icon {
  font-size: 1.6rem;
  line-height: 1;
  font-family: 'Noto Sans JP', serif;
}
.ktulis-tab-btn:hover {
  background: var(--gray-100);
  color: var(--gray-700);
  transform: translateY(-1px);
}
.dark-mode .ktulis-tab-btn:hover {
  background: var(--gray-700);
  color: var(--gray-200);
}
.ktulis-tab-btn--active {
  background: linear-gradient(135deg, #4f46e5, #7c3aed) !important;
  color: #fff !important;
  box-shadow: 0 4px 14px rgba(79,70,229,.4);
  transform: translateY(-1px);
}


/* ── Kana tab: full width single column ── */
#ktulisTabHiraContent,
#ktulisTabKataContent {
  display: block;
}

/* ── Search Bar ── */
.ktulis-search-card {
  padding: .875rem 1rem;
  margin-bottom: .875rem;
}
.ktulis-search-row {
  display: flex;
  flex-direction: column;
  gap: .65rem;
}
.ktulis-search-wrap {
  position: relative;
  display: flex;
  align-items: center;
}
.ktulis-search-icon {
  position: absolute;
  left: 12px;
  font-size: 15px;
  pointer-events: none;
  color: var(--gray-400);
}
.ktulis-search-input {
  width: 100%;
  padding: .6rem 2.4rem .6rem 2.2rem;
  border-radius: 12px;
  border: 1.5px solid var(--border);
  background: var(--white);
  color: var(--gray-900);
  font-size: .9rem;
  outline: none;
  transition: all .2s;
}
.ktulis-search-input:focus {
  border-color: #4f46e5;
  box-shadow: 0 0 0 3px rgba(79,70,229,.12);
}
.dark-mode .ktulis-search-input {
  background: var(--gray-700);
  color: var(--gray-900);
  border-color: var(--gray-600);
}
.ktulis-search-clear {
  position: absolute;
  right: 10px;
  background: none;
  border: none;
  color: var(--gray-400);
  font-size: 14px;
  cursor: pointer;
  padding: 2px 4px;
  border-radius: 50%;
  transition: color .15s;
}
.ktulis-search-clear:hover { color: var(--gray-700); }
.ktulis-level-pills { display: flex; flex-wrap: wrap; gap: 5px; }
.ktulis-level-pills .pill-opt { font-size: .75rem; padding: .25rem .65rem; }

/* ── Kanji Grid ── */
.ktulis-grid-wrap { min-width: 0; }
.ktulis-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
  gap: 10px;
}
@media (min-width: 480px) {
  .ktulis-grid { grid-template-columns: repeat(auto-fill, minmax(108px, 1fr)); }
}
@media (max-width: 699px) {
  .ktulis-grid { grid-template-columns: repeat(auto-fill, minmax(82px, 1fr)); gap: 8px; }
}

/* Level-based accent colors */
.ktulis-kanji-tile[data-level='pra']  { --tile-accent: #8b5cf6; --tile-bg: #f5f3ff; }
.ktulis-kanji-tile[data-level='n5']   { --tile-accent: #10b981; --tile-bg: #ecfdf5; }
.ktulis-kanji-tile[data-level='n4']   { --tile-accent: #3b82f6; --tile-bg: #eff6ff; }
.ktulis-kanji-tile[data-level='n3']   { --tile-accent: #f59e0b; --tile-bg: #fffbeb; }
.ktulis-kanji-tile[data-level='n2']   { --tile-accent: #ef4444; --tile-bg: #fef2f2; }
.ktulis-kanji-tile[data-level='n1']   { --tile-accent: #6b21a8; --tile-bg: #faf5ff; }

.ktulis-kanji-tile {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  padding: 1rem .5rem .7rem;
  border-radius: 16px;
  border: 2px solid var(--border);
  background: var(--white);
  cursor: pointer;
  transition: all .22s cubic-bezier(.4,0,.2,1);
  overflow: hidden;
  position: relative;
}
/* top accent bar */
.ktulis-kanji-tile::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--tile-accent, #4f46e5);
  border-radius: 16px 16px 0 0;
  opacity: 0;
  transition: opacity .2s;
}
.ktulis-kanji-tile:hover::before,
.ktulis-kanji-tile.active::before { opacity: 1; }

.dark-mode .ktulis-kanji-tile {
  background: var(--gray-800);
  border-color: var(--gray-700);
}
.ktulis-kanji-tile:hover {
  border-color: var(--tile-accent, #4f46e5);
  transform: translateY(-4px) scale(1.02);
  box-shadow: 0 10px 24px rgba(0,0,0,.12);
  background: var(--tile-bg, #f5f3ff);
}
.dark-mode .ktulis-kanji-tile:hover {
  background: rgba(79,70,229,.15);
  border-color: #7c3aed;
}
.ktulis-kanji-tile.active {
  border-color: var(--tile-accent, #4f46e5);
  background: var(--tile-bg, #ede9fe);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--tile-accent, #4f46e5) 25%, transparent), 0 8px 20px rgba(0,0,0,.1);
  transform: translateY(-2px);
}
.dark-mode .ktulis-kanji-tile.active {
  background: rgba(79,70,229,.25);
  border-color: #7c3aed;
}

.ktulis-tile-char {
  font-size: 2.5rem;
  line-height: 1.1;
  font-family: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', serif;
  font-weight: 500;
  color: var(--gray-900);
  text-shadow: 0 1px 3px rgba(0,0,0,.08);
}
.ktulis-tile-level { font-size: .58rem; padding: 2px 7px; }
.ktulis-tile-arti {
  font-size: .65rem;
  color: var(--gray-500);
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 92%;
  font-weight: 500;
}
.ktulis-pagination { margin-top: 1rem; }

/* ── Side Panel ── */
.ktulis-panel {
  position: sticky;
  top: 70px;
  background: var(--white);
  border: 1.5px solid var(--border);
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(0,0,0,.08);
  transition: box-shadow .2s;
}
.ktulis-panel:hover { box-shadow: 0 12px 40px rgba(0,0,0,.12); }
.dark-mode .ktulis-panel {
  background: var(--gray-800);
  border-color: var(--gray-700);
}
@media (max-width: 767px) {
  .ktulis-panel {
    position: static;
    margin-top: 1rem;
  }
}

/* Empty state */
.ktulis-panel-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  padding: 3.5rem 2rem;
  text-align: center;
  background: linear-gradient(160deg, #f8f7ff 0%, #f0f0ff 100%);
  min-height: 280px;
}
.dark-mode .ktulis-panel-empty {
  background: rgba(79,70,229,.07);
}
.ktulis-panel-empty-icon {
  font-size: 3rem;
  animation: ktulisBounce 2.5s ease-in-out infinite;
  filter: drop-shadow(0 4px 8px rgba(79,70,229,.3));
}
@keyframes ktulisBounce {
  0%, 100% { transform: translateY(0) rotate(-5deg); }
  50%       { transform: translateY(-8px) rotate(5deg); }
}
.ktulis-panel-empty-text {
  font-size: .88rem;
  color: var(--gray-400);
  line-height: 1.7;
  max-width: 200px;
}
.ktulis-panel-empty-hint {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: .75rem;
  color: #7c3aed;
  font-weight: 600;
  background: rgba(124,58,237,.08);
  padding: .4rem .9rem;
  border-radius: 99px;
  border: 1px solid rgba(124,58,237,.15);
}

/* ── Info Header ── */
.ktulis-panel-content { padding: 0; }
.ktulis-info-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.1rem 1.25rem .9rem;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(135deg, #ede9fe 0%, #f5f3ff 100%);
  position: relative;
  overflow: hidden;
}
.ktulis-info-header::before {
  content: '';
  position: absolute;
  top: -20px; right: -20px;
  width: 80px; height: 80px;
  border-radius: 50%;
  background: rgba(124,58,237,.08);
}
.dark-mode .ktulis-info-header {
  background: rgba(79,70,229,.15);
  border-color: var(--gray-700);
}
.ktulis-info-char {
  font-size: 4rem;
  line-height: 1;
  font-family: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', serif;
  color: #4f46e5;
  flex-shrink: 0;
  text-shadow: 0 2px 8px rgba(79,70,229,.2);
}
.dark-mode .ktulis-info-char { color: #a78bfa; }
.ktulis-info-meta { flex: 1; min-width: 0; }
.ktulis-info-arti {
  font-size: .95rem;
  font-weight: 700;
  color: var(--gray-800);
  margin-bottom: .35rem;
}
.dark-mode .ktulis-info-arti { color: var(--gray-900); }
.ktulis-info-readings { display: flex; gap: 5px; flex-wrap: wrap; margin-bottom: .4rem; }
.ktulis-info-meta2 { display: flex; gap: 6px; align-items: center; flex-wrap: wrap; }
.ktulis-stroke-badge {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  font-size: .7rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 99px;
  background: rgba(79,70,229,.1);
  color: #4f46e5;
}
.dark-mode .ktulis-stroke-badge { background: rgba(167,139,250,.15); color: #a78bfa; }

/* ── Writer Canvas — practice paper style ── */
.ktulis-writer-wrap {
  --ktulis-outline: #e2e8f0;
  --ktulis-stroke: #1565c0;
  --ktulis-quiz: #e53935;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 1.25rem;
  min-height: 220px;
  position: relative;
  background:
    linear-gradient(rgba(79,70,229,.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(79,70,229,.06) 1px, transparent 1px),
    var(--gray-50);
  background-size: 27.5px 27.5px;
  border-bottom: 1px solid var(--border);
}
/* Cross-hair center lines */
.ktulis-writer-wrap::before,
.ktulis-writer-wrap::after {
  content: '';
  position: absolute;
  background: rgba(79,70,229,.12);
  pointer-events: none;
}
.ktulis-writer-wrap::before { left: 50%; top: 8%; bottom: 8%; width: 1px; }
.ktulis-writer-wrap::after  { top: 50%; left: 8%; right: 8%; height: 1px; }
.dark-mode .ktulis-writer-wrap {
  --ktulis-outline: rgba(255,255,255,.15);
  --ktulis-stroke: #818cf8;
  --ktulis-quiz: #f87171;
  background:
    linear-gradient(rgba(139,92,246,.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(139,92,246,.08) 1px, transparent 1px),
    var(--gray-750, #1f2937);
  background-size: 27.5px 27.5px;
  border-color: var(--gray-700);
}
#ktulisWriterCanvas svg {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  position: relative;
  z-index: 1;
  filter: drop-shadow(0 2px 8px rgba(0,0,0,.08));
}

/* ── Stroke Progress ── */
.ktulis-stroke-progress {
  padding: .6rem 1.1rem .7rem;
  border-bottom: 1px solid var(--border);
  background: var(--gray-50);
}
.dark-mode .ktulis-stroke-progress {
  background: rgba(0,0,0,.1);
  border-color: var(--gray-700);
}
.ktulis-stroke-label {
  font-size: .65rem;
  color: var(--gray-400);
  margin-bottom: 6px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
}
.ktulis-stroke-dots { display: flex; flex-wrap: wrap; gap: 5px; }
.ktulis-stroke-dot {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  font-size: .68rem;
  font-weight: 700;
  background: var(--gray-100);
  color: var(--gray-400);
  border: 1.5px solid var(--border);
  transition: all .25s cubic-bezier(.4,0,.2,1);
}
.dark-mode .ktulis-stroke-dot {
  background: var(--gray-700);
  border-color: var(--gray-600);
  color: var(--gray-500);
}
.ktulis-stroke-dot.done {
  background: linear-gradient(135deg, #4f46e5, #7c3aed);
  border-color: transparent;
  color: #fff;
  transform: scale(.9);
}
.ktulis-stroke-dot.active {
  background: linear-gradient(135deg, #ef4444, #f97316);
  border-color: transparent;
  color: #fff;
  transform: scale(1.15);
  box-shadow: 0 0 0 4px rgba(239,68,68,.2);
  animation: ktulisStrokePulse .8s ease-in-out infinite;
}
@keyframes ktulisStrokePulse {
  0%, 100% { box-shadow: 0 0 0 3px rgba(239,68,68,.25); }
  50%       { box-shadow: 0 0 0 7px rgba(239,68,68,.08); }
}

/* ── Control Buttons ── */
.ktulis-controls {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  padding: .875rem 1.1rem;
}
.ktulis-ctrl-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  padding: .6rem .5rem;
  border-radius: 12px;
  border: 1.5px solid var(--border);
  background: var(--white);
  color: var(--gray-700);
  font-size: .8rem;
  font-weight: 700;
  cursor: pointer;
  transition: all .18s cubic-bezier(.4,0,.2,1);
  white-space: nowrap;
}
.dark-mode .ktulis-ctrl-btn {
  background: var(--gray-700);
  border-color: var(--gray-600);
  color: var(--gray-200);
}
.ktulis-ctrl-btn:disabled { opacity: .4; cursor: default; pointer-events: none; }
.ktulis-ctrl-btn:not(:disabled):hover { transform: translateY(-1px); }

.ktulis-btn-anim {
  border-color: #4f46e5;
  color: #4f46e5;
  background: rgba(79,70,229,.05);
  grid-column: 1 / -1; /* full width */
}
.ktulis-btn-anim:not(:disabled):hover {
  background: #4f46e5;
  color: #fff;
  box-shadow: 0 4px 14px rgba(79,70,229,.4);
}

.ktulis-btn-loop { border-color: #7c3aed; color: #7c3aed; }
.ktulis-btn-loop:not(:disabled):hover { background: #7c3aed; color: #fff; box-shadow: 0 4px 14px rgba(124,58,237,.35); }
.ktulis-btn-loop--active { background: #7c3aed !important; color: #fff !important; border-color: #7c3aed; }

.ktulis-btn-quiz { border-color: #ef4444; color: #ef4444; }
.ktulis-btn-quiz:not(:disabled):hover { background: #ef4444; color: #fff; box-shadow: 0 4px 14px rgba(239,68,68,.35); }

.ktulis-btn-reset { border-color: var(--gray-300); color: var(--gray-500); }
.ktulis-btn-reset:not(:disabled):hover { background: var(--gray-100); color: var(--gray-700); }
.dark-mode .ktulis-btn-reset { border-color: var(--gray-600); color: var(--gray-400); }
.dark-mode .ktulis-btn-reset:not(:disabled):hover { background: var(--gray-600); color: var(--gray-200); }

/* Dark mode button colors */
.dark-mode .ktulis-btn-anim { border-color: #818cf8; color: #818cf8; background: rgba(129,140,248,.1); }
.dark-mode .ktulis-btn-anim:not(:disabled):hover { background: #818cf8; color: #fff; box-shadow: 0 4px 14px rgba(129,140,248,.35); }

.dark-mode .ktulis-btn-loop { border-color: #a78bfa; color: #a78bfa; }
.dark-mode .ktulis-btn-loop:not(:disabled):hover { background: #a78bfa; color: #fff; box-shadow: 0 4px 14px rgba(167,139,250,.35); }
.dark-mode .ktulis-btn-loop--active { background: #a78bfa !important; color: #fff !important; border-color: #a78bfa; }

.dark-mode .ktulis-btn-quiz { border-color: #f87171; color: #f87171; }
.dark-mode .ktulis-btn-quiz:not(:disabled):hover { background: #f87171; color: #fff; box-shadow: 0 4px 14px rgba(248,113,113,.35); }

/* ── Quiz Feedback ── */
.ktulis-quiz-feedback {
  padding: .5rem 1.1rem;
  border-bottom: 1px solid var(--border);
}
.dark-mode .ktulis-quiz-feedback { border-color: var(--gray-700); }
.ktulis-quiz-feedback-inner {
  padding: .6rem 1rem;
  border-radius: 10px;
  background: var(--gray-50);
  font-size: .82rem;
  font-weight: 600;
  color: var(--gray-700);
  text-align: center;
  transition: all .2s;
}
.dark-mode .ktulis-quiz-feedback-inner { background: var(--gray-700); color: var(--gray-200); }
.ktulis-quiz-feedback-inner.correct { background: #ecfdf5; color: #065f46; }
.ktulis-quiz-feedback-inner.wrong   { background: #fef2f2; color: #991b1b; }
.dark-mode .ktulis-quiz-feedback-inner.correct { background: rgba(16,185,129,.15); color: #6ee7b7; }
.dark-mode .ktulis-quiz-feedback-inner.wrong   { background: rgba(239,68,68,.15); color: #fca5a5; }

/* ── Contoh Kata ── */
.ktulis-contoh-wrap {
  padding: .7rem 1.1rem .85rem;
  border-top: 1px solid var(--border);
  background: linear-gradient(to bottom, transparent, rgba(79,70,229,.02));
}
.dark-mode .ktulis-contoh-wrap {
  border-color: var(--gray-700);
  background: transparent;
}
.ktulis-contoh-title {
  font-size: .65rem;
  font-weight: 700;
  color: #3b82f6;
  text-transform: uppercase;
  letter-spacing: .06em;
  margin-bottom: .45rem;
}
.ktulis-contoh-body { display: flex; align-items: baseline; gap: 6px; flex-wrap: wrap; }
.contoh-kata {
  color: #3b82f6;
  font-weight: 800;
  font-size: 1.1rem;
}
.contoh-baca {
  color: var(--gray-500);
  font-size: .8rem;
}
.contoh-arti {
  color: var(--gray-600);
  font-size: .8rem;
  font-style: italic;
}

/* ── Kana Section Labels ── */
.ktulis-kana-section-label {
  font-size: .72rem;
  font-weight: 700;
  color: var(--gray-400);
  text-transform: uppercase;
  letter-spacing: .07em;
  margin: .9rem 0 .45rem;
  padding: 0 2px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.ktulis-kana-section-label::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* ── Kana Grid ── */
.ktulis-kana-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 4px;
  margin-bottom: .75rem;
}
.ktulis-kana-grid--youon {
  grid-template-columns: repeat(3, 1fr);
}
@media (max-width: 400px) {
  .ktulis-kana-grid { gap: 3px; }
}
/* Empty spacer for ya/wa row gaps */
.ktulis-kana-empty {
  border-radius: 14px;
  border: 2px dashed var(--border);
  opacity: .3;
  min-height: 64px;
}

/* Kana color palette by row */
.ktulis-kana-tile { --kana-color: #4f46e5; }
.ktulis-kana-tile[data-row='a']  { --kana-color: #ef4444; }
.ktulis-kana-tile[data-row='ka'] { --kana-color: #f97316; }
.ktulis-kana-tile[data-row='sa'] { --kana-color: #eab308; }
.ktulis-kana-tile[data-row='ta'] { --kana-color: #22c55e; }
.ktulis-kana-tile[data-row='na'] { --kana-color: #06b6d4; }
.ktulis-kana-tile[data-row='ha'] { --kana-color: #3b82f6; }
.ktulis-kana-tile[data-row='ma'] { --kana-color: #8b5cf6; }
.ktulis-kana-tile[data-row='ya'] { --kana-color: #ec4899; }
.ktulis-kana-tile[data-row='ra'] { --kana-color: #14b8a6; }
.ktulis-kana-tile[data-row='wa'] { --kana-color: #f43f5e; }

.ktulis-kana-tile {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: .4rem .2rem .4rem;
  border-radius: 12px;
  border: 1.5px solid var(--border);
  background: var(--white);
  cursor: pointer;
  transition: all .2s cubic-bezier(.4,0,.2,1);
  position: relative;
  overflow: hidden;
}
.ktulis-kana-tile::before {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 2px;
  background: var(--kana-color);
  transform: scaleX(0);
  transition: transform .2s ease;
  border-radius: 0 0 12px 12px;
}
.ktulis-kana-tile:hover::before,
.ktulis-kana-tile.active::before { transform: scaleX(1); }

.dark-mode .ktulis-kana-tile { background: var(--gray-800); border-color: var(--gray-700); }
.ktulis-kana-tile:hover {
  border-color: var(--kana-color);
  transform: translateY(-3px) scale(1.04);
  box-shadow: 0 6px 16px rgba(0,0,0,.1);
}
.dark-mode .ktulis-kana-tile:hover { background: rgba(79,70,229,.1); }
.ktulis-kana-tile.active {
  border-color: var(--kana-color);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--kana-color) 20%, transparent), 0 6px 16px rgba(0,0,0,.1);
  transform: translateY(-2px);
}
.dark-mode .ktulis-kana-tile.active { background: rgba(79,70,229,.2); border-color: #7c3aed; }

.ktulis-kana-char {
  font-size: 1.65rem;
  line-height: 1.1;
  font-family: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', serif;
  color: var(--gray-900);
}
.ktulis-kana-tile--youon .ktulis-kana-char { font-size: 1.25rem; }
.ktulis-kana-romaji {
  font-size: .62rem;
  color: var(--kana-color);
  font-weight: 700;
  letter-spacing: .04em;
}

/* ── Loading spinner in canvas ── */
.loading-spinner {
  width: 36px;
  height: 36px;
  border: 3px solid rgba(79,70,229,.15);
  border-top-color: #4f46e5;
  border-radius: 50%;
  animation: spin .7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }