/* ==========================================
   小数点スナイパー - スタイルシート
   すべてのクラスに "ds-" プレフィックスを付与してスコープ化
   ========================================== */

/* 変数定義 */
.ds-wrapper {
  --ds-base: #FFFFFF;
  --ds-base-light: #FAFAFA;
  --ds-main: #1e3a5f;
  --ds-accent: #d4af37;
  --ds-text: #2C3E50;
  --ds-success: #10b981;
  --ds-danger: #ef4444;
  --ds-digit-color: #000000;
  
  --ds-digit-size: 80px;
  --ds-col-width: 120px;
  
  --ds-grid-line-color: #000000;
  --ds-grid-line-width: 2px;
}

/* リセット */
.ds-wrapper * {
  box-sizing: border-box !important;
}

/* ラッパー全体 */
.ds-wrapper {
  width: 100% !important;
  max-width: 100% !important;
  margin: 0 auto !important;
  padding: 0 !important;
  background-color: var(--ds-base-light) !important;
  color: var(--ds-text) !important;
  font-family: "UD Digi Kyokasho N-R", "UD デジタル 教科書体 N-R", "Noto Sans JP", sans-serif !important;
}

/* ヘッダー */
.ds-header {
  width: 100% !important;
  background: var(--ds-main) !important;
  border-bottom: 3px solid var(--ds-accent) !important;
  padding: 1rem !important;
  box-shadow: 0 4px 10px rgba(0,0,0,0.1) !important;
  text-align: center !important;
  margin: 0 !important;
}

.ds-header h1 {
  margin: 0 !important;
  padding: 0 !important;
  color: #fff !important;
  font-size: clamp(1.2rem, 4vw, 1.6rem) !important;
  font-weight: bold !important;
  line-height: 1.4 !important;
}

/* ゲームコンテナ */
.ds-game-container {
  width: 98% !important;
  max-width: 1200px !important;
  margin: 20px auto !important;
  background: var(--ds-base) !important;
  border: 2px solid #E8E8E8 !important;
  border-radius: 24px !important;
  padding: 10px !important;
  display: flex !important;
  flex-direction: column !important;
  align-items: center !important;
}

/* HUDエリア */
.ds-hud-area {
  margin-bottom: 10px !important;
  text-align: center !important;
}

.ds-mission-label {
  font-size: 14px !important;
  font-weight: bold !important;
  color: var(--ds-main) !important;
  background: #f1f5f9 !important;
  padding: 4px 12px !important;
  border-radius: 20px !important;
  display: inline-block !important;
}

.ds-mission-text {
  font-size: clamp(2rem, 5vw, 3rem) !important;
  font-weight: 900 !important;
  color: var(--ds-main) !important;
  margin: 8px 0 !important;
  line-height: 1.2 !important;
}

/* スコープ画面 */
.ds-scope-screen {
  position: relative !important;
  background-color: #FFFFFF !important;
  border-radius: 16px !important;
  padding: 0 0 30px 0 !important;
  width: 100% !important;
  min-height: 380px !important;
  display: flex !important;
  flex-direction: column !important;
  align-items: center !important;
  overflow: hidden !important;
  border: 4px solid #000000 !important;
}

/* 背景グリッド層 */
.ds-grid-bg-layer {
  position: absolute !important;
  top: 0 !important;
  left: 0 !important;
  width: 100% !important;
  height: 100% !important;
  display: flex !important;
  justify-content: center !important;
  padding: 0 20px !important;
  pointer-events: none !important;
  z-index: 0 !important;
}

.ds-grid-bg-column {
  width: var(--ds-col-width) !important;
  height: 100% !important;
  border-right: var(--ds-grid-line-width) solid var(--ds-grid-line-color) !important;
}

.ds-grid-bg-column:first-child {
  border-left: var(--ds-grid-line-width) solid var(--ds-grid-line-color) !important;
}

.ds-grid-bg-column:nth-child(4) {
  background-color: rgba(0, 0, 0, 0.03) !important;
}

/* 位ラベル行 */
.ds-place-header-row {
  display: flex !important;
  justify-content: center !important;
  width: 100% !important;
  background-color: #f1f5f9 !important;
  border-bottom: var(--ds-grid-line-width) solid var(--ds-grid-line-color) !important;
  padding: 15px 20px !important;
  z-index: 50 !important;
  position: relative !important;
}

.ds-fixed-place-label {
  width: var(--ds-col-width) !important;
  text-align: center !important;
  font-size: 18px !important;
  font-weight: bold !important;
  color: var(--ds-main) !important;
  flex-shrink: 0 !important;
  border-right: var(--ds-grid-line-width) solid var(--ds-grid-line-color) !important;
  line-height: 1.4 !important;
  margin: 0 !important;
  padding: 0 !important;
}

.ds-fixed-place-label:first-child {
  border-left: var(--ds-grid-line-width) solid var(--ds-grid-line-color) !important;
}

.ds-fixed-place-label.ds-decimal-place {
  color: #c2410c !important;
  font-size: 16px !important;
}

/* グリッドコンテナ */
.ds-grid-container {
  display: flex !important;
  align-items: flex-start !important;
  padding: 20px 20px 0 20px !important;
  position: relative !important;
  z-index: 10 !important;
  will-change: transform !important;
}

/* カラム */
.ds-column {
  display: flex !important;
  flex-direction: column !important;
  align-items: center !important;
  width: var(--ds-col-width) !important;
  position: relative !important;
  flex-shrink: 0 !important;
}

/* 数字ラッパー */
.ds-digit-wrapper {
  position: relative !important;
  height: var(--ds-digit-size) !important;
  width: 100% !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  margin-top: 20px !important;
}

.ds-digit {
  font-family: "Courier New", monospace !important;
  font-size: var(--ds-digit-size) !important;
  font-weight: bold !important;
  color: var(--ds-digit-color) !important;
  line-height: 1 !important;
  z-index: 2 !important;
  min-height: var(--ds-digit-size) !important;
  margin: 0 !important;
  padding: 0 !important;
}

/* クリック領域（Gap） */
.ds-gap {
  position: absolute !important;
  right: -20px !important;
  top: 50% !important;
  transform: translateY(-50%) !important;
  width: 40px !important;
  height: var(--ds-digit-size) !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  cursor: pointer !important;
  z-index: 15 !important;
}

.ds-target-mark {
  width: 30px !important;
  height: 30px !important;
  border: 3px solid var(--ds-accent) !important;
  border-radius: 50% !important;
  opacity: 0 !important;
  transition: all 0.2s !important;
  background: rgba(255,255,255,0.9) !important;
}

.ds-gap:hover .ds-target-mark {
  opacity: 1 !important;
  transform: scale(1.2) !important;
}

/* 動く小数点 */
.ds-active-decimal-point {
  width: 20px !important;
  height: 20px !important;
  background: var(--ds-danger) !important;
  border-radius: 50% !important;
  position: absolute !important;
  top: 100px !important;
  z-index: 30 !important;
  box-shadow: 0 0 0 3px #fff !important;
  transform: translateX(-50%) !important;
  transition-property: left !important;
  transition-timing-function: cubic-bezier(0.34, 1.56, 0.64, 1) !important;
}

.ds-active-decimal-point.ds-success {
  background: var(--ds-success) !important;
  box-shadow: 0 0 25px var(--ds-success) !important;
}

/* コントロールエリア */
.ds-controls-area {
  margin-top: 10px !important;
  text-align: center !important;
  min-height: 80px !important;
}

.ds-feedback {
  font-size: 20px !important;
  font-weight: 900 !important;
  min-height: 1.5em !important;
  margin: 10px 0 !important;
  line-height: 1.4 !important;
}

.ds-feedback.ds-correct {
  color: var(--ds-success) !important;
}

.ds-feedback.ds-wrong {
  color: var(--ds-danger) !important;
}

/* ボタン */
.ds-btn-primary {
  background: linear-gradient(135deg, var(--ds-main) 0%, #2d5a8f 100%) !important;
  color: #fff !important;
  border: none !important;
  border-radius: 12px !important;
  padding: 14px 40px !important;
  font-size: 18px !important;
  font-weight: bold !important;
  cursor: pointer !important;
  display: block !important;
  margin: 10px auto !important;
  box-shadow: 0 4px 15px rgba(0,0,0,0.2) !important;
  transition: transform 0.2s, opacity 0.3s !important;
  opacity: 0 !important;
  pointer-events: none !important;
}

.ds-btn-primary.ds-visible {
  opacity: 1 !important;
  pointer-events: auto !important;
}

.ds-btn-primary:hover {
  transform: translateY(-2px) !important;
  box-shadow: 0 6px 20px rgba(0,0,0,0.3) !important;
}

/* シェイクアニメーション */
.ds-shake {
  animation: ds-shake 0.4s cubic-bezier(.36,.07,.19,.97) both !important;
}

@keyframes ds-shake {
  10%, 90% { transform: translate3d(-5px, 0, 0); }
  20%, 80% { transform: translate3d(10px, 0, 0); }
  30%, 50%, 70% { transform: translate3d(-8px, 0, 0); }
  40%, 60% { transform: translate3d(8px, 0, 0); }
}

/* レスポンシブ対応 */
@media (max-width: 768px) {
  .ds-wrapper {
    --ds-digit-size: 60px !important;
    --ds-col-width: 90px !important;
  }
  
  .ds-mission-text {
    font-size: clamp(1.5rem, 5vw, 2rem) !important;
  }
  
  .ds-fixed-place-label {
    font-size: 14px !important;
  }
  
  .ds-scope-screen {
    min-height: 300px !important;
  }
}

/* ==========================================
   練習問題モード追加スタイル (v2.0)
   ========================================== */

/* メインタブ */
.ds-main-tabs {
  display: flex !important;
  gap: 8px !important;
  padding: 16px 16px 0 !important;
  border-bottom: 3px solid var(--ds-accent) !important;
  background: var(--ds-main) !important;
}

.ds-main-tab-btn {
  padding: 10px 28px !important;
  border: none !important;
  border-radius: 10px 10px 0 0 !important;
  font-size: 16px !important;
  font-weight: bold !important;
  cursor: pointer !important;
  background: rgba(255,255,255,0.15) !important;
  color: rgba(255,255,255,0.75) !important;
  transition: all 0.2s !important;
}

.ds-main-tab-btn.ds-main-tab-active {
  background: #fff !important;
  color: var(--ds-main) !important;
}

/* セクション共通 */
.ds-sniper-section,
.ds-practice-section {
  width: 100% !important;
  display: none !important;   /* JS切替前は両方隠す */
}

.ds-sniper-section.ds-tab-active,
.ds-practice-section.ds-tab-active {
  display: block !important;  /* アクティブなタブだけ表示 */
}

/* 練習エリア */
.ds-practice-area {
  max-width: 600px !important;
  margin: 20px auto !important;
  padding: 0 12px !important;
  font-family: "UD Digi Kyokasho N-R","UD デジタル 教科書体 N-R","Noto Sans JP",sans-serif !important;
  position: relative !important;
}

/* モード選択 */
.ds-prac-section-label {
  font-size: 13px !important;
  font-weight: bold !important;
  color: var(--ds-main) !important;
  margin: 16px 0 6px !important;
  letter-spacing: 0.04em !important;
}

.ds-prac-mode-btns,
.ds-prac-level-btns {
  display: flex !important;
  gap: 8px !important;
  flex-wrap: wrap !important;
  margin-bottom: 4px !important;
}

.ds-prac-mode-btn,
.ds-prac-level-btn {
  padding: 8px 18px !important;
  border: 2px solid var(--ds-main) !important;
  border-radius: 20px !important;
  font-size: 14px !important;
  font-weight: bold !important;
  background: #fff !important;
  color: var(--ds-main) !important;
  cursor: pointer !important;
  transition: all 0.18s !important;
}

.ds-prac-mode-btn.ds-prac-active,
.ds-prac-level-btn.ds-prac-active {
  background: var(--ds-main) !important;
  color: #fff !important;
}

.ds-prac-mode-btn:hover,
.ds-prac-level-btn:hover {
  background: var(--ds-main) !important;
  color: #fff !important;
  opacity: 0.85 !important;
}

/* 問題表示 */
.ds-prac-question-card {
  background: var(--ds-base) !important;
  border: 3px solid var(--ds-main) !important;
  border-radius: 16px !important;
  margin: 18px 0 !important;
  padding: 28px 16px !important;
  text-align: center !important;
}

.ds-prac-question {
  font-size: clamp(2rem, 7vw, 3.2rem) !important;
  font-weight: 900 !important;
  color: var(--ds-main) !important;
  letter-spacing: 0.05em !important;
  line-height: 1.2 !important;
}

/* 選択肢ボタン */
.ds-prac-choices {
  display: flex !important;
  justify-content: center !important;
  gap: 16px !important;
  margin: 12px 0 !important;
}

.ds-prac-choice-btn {
  width: 90px !important;
  height: 90px !important;
  border: 3px solid var(--ds-main) !important;
  border-radius: 16px !important;
  background: #fff !important;
  color: var(--ds-main) !important;
  font-size: 1.6rem !important;
  font-weight: 900 !important;
  cursor: pointer !important;
  transition: all 0.15s !important;
  box-shadow: 0 3px 8px rgba(0,0,0,0.1) !important;
}

.ds-prac-choice-btn:hover:not(:disabled) {
  background: var(--ds-main) !important;
  color: #fff !important;
  transform: translateY(-3px) !important;
  box-shadow: 0 6px 16px rgba(30,58,95,0.3) !important;
}

.ds-prac-choice-btn:disabled {
  cursor: default !important;
}

.ds-prac-choice-btn.ds-prac-correct {
  background: #10b981 !important;
  border-color: #10b981 !important;
  color: #fff !important;
  transform: scale(1.1) !important;
  box-shadow: 0 0 20px rgba(16,185,129,0.5) !important;
}

.ds-prac-choice-btn.ds-prac-wrong {
  background: #ef4444 !important;
  border-color: #ef4444 !important;
  color: #fff !important;
}

.ds-prac-choice-btn.ds-prac-reveal {
  background: #10b981 !important;
  border-color: #10b981 !important;
  color: #fff !important;
  animation: ds-pulse 0.6s ease-in-out 2 !important;
}

@keyframes ds-pulse {
  0%, 100% { transform: scale(1); }
  50%       { transform: scale(1.12); }
}

/* フィードバック */
.ds-prac-feedback {
  font-size: 1.4rem !important;
  font-weight: 900 !important;
  text-align: center !important;
  min-height: 2rem !important;
  margin: 8px 0 4px !important;
}

.ds-prac-feedback.ds-prac-correct { color: #10b981 !important; }
.ds-prac-feedback.ds-prac-wrong   { color: #ef4444 !important; }

/* 説明 */
.ds-prac-explanation {
  text-align: center !important;
  font-size: 1.05rem !important;
  font-weight: bold !important;
  color: var(--ds-main) !important;
  background: #f1f5f9 !important;
  border-radius: 10px !important;
  padding: 0 !important;
  max-height: 0 !important;
  overflow: hidden !important;
  transition: max-height 0.3s ease, padding 0.3s ease !important;
}

.ds-prac-explanation.ds-prac-explanation-visible {
  max-height: 80px !important;
  padding: 10px 16px !important;
}

/* スコアバー */
.ds-prac-score-bar {
  display: flex !important;
  justify-content: space-between !important;
  align-items: center !important;
  margin: 10px 0 0 !important;
  padding: 8px 16px !important;
  background: var(--ds-main) !important;
  border-radius: 12px !important;
  color: #fff !important;
}

.ds-prac-score-label {
  font-size: 14px !important;
  font-weight: bold !important;
  opacity: 0.85 !important;
}

.ds-prac-score {
  font-size: 1.4rem !important;
  font-weight: 900 !important;
  color: var(--ds-accent) !important;
}

/* 次へ・リセットボタン */
.ds-prac-action-row {
  display: flex !important;
  gap: 12px !important;
  justify-content: center !important;
  margin-top: 14px !important;
}

.ds-prac-next-btn {
  background: linear-gradient(135deg, var(--ds-main) 0%, #2d5a8f 100%) !important;
  color: #fff !important;
  border: none !important;
  border-radius: 12px !important;
  padding: 14px 40px !important;
  font-size: 1.1rem !important;
  font-weight: bold !important;
  cursor: pointer !important;
  opacity: 0 !important;
  pointer-events: none !important;
  transition: opacity 0.25s, transform 0.2s !important;
  box-shadow: 0 4px 15px rgba(0,0,0,0.2) !important;
}

.ds-prac-next-btn.ds-prac-visible {
  opacity: 1 !important;
  pointer-events: auto !important;
}

.ds-prac-next-btn:hover {
  transform: translateY(-2px) !important;
}

.ds-prac-reset-btn {
  background: #fff !important;
  color: var(--ds-main) !important;
  border: 2px solid var(--ds-main) !important;
  border-radius: 12px !important;
  padding: 14px 24px !important;
  font-size: 1rem !important;
  font-weight: bold !important;
  cursor: pointer !important;
  transition: all 0.2s !important;
}

.ds-prac-reset-btn:hover {
  background: var(--ds-main) !important;
  color: #fff !important;
}

/* ============================================================
   レベル3クリア演出
============================================================ */
.ds-prac-confetti {
  display: none !important;
  position: fixed !important;
  inset: 0 !important;
  z-index: 9999 !important;
  pointer-events: none !important;
  overflow: hidden !important;
}

.ds-prac-confetti.ds-prac-confetti-active {
  display: block !important;
}

.ds-confetti-piece {
  position: absolute !important;
  top: -16px !important;
  animation: ds-confetti-fall linear forwards !important;
}

@keyframes ds-confetti-fall {
  0%   { transform: translateY(0) rotate(0deg); opacity: 1; }
  100% { transform: translateY(105vh) rotate(720deg); opacity: 0; }
}

.ds-confetti-star {
  position: absolute !important;
  top: -30px !important;
  font-size: 1.8rem !important;
  animation: ds-star-fall linear forwards !important;
}

@keyframes ds-star-fall {
  0%   { transform: translateY(0) scale(0.5); opacity: 1; }
  50%  { transform: translateY(45vh) scale(1.4); opacity: 1; }
  100% { transform: translateY(100vh) scale(0.5); opacity: 0; }
}

.ds-clear-message {
  position: absolute !important;
  top: 50% !important;
  left: 50% !important;
  transform: translate(-50%, -50%) !important;
  text-align: center !important;
  pointer-events: none !important;
  animation: ds-clear-pop 0.6s cubic-bezier(0.34,1.56,0.64,1) both !important;
}

@keyframes ds-clear-pop {
  from { transform: translate(-50%,-50%) scale(0.3); opacity: 0; }
  to   { transform: translate(-50%,-50%) scale(1);   opacity: 1; }
}

.ds-clear-title {
  font-size: clamp(2.5rem, 8vw, 4rem) !important;
  font-weight: 900 !important;
  color: var(--ds-accent) !important;
  text-shadow: 0 4px 20px rgba(0,0,0,0.4), 0 0 40px rgba(212,175,55,0.6) !important;
  white-space: nowrap !important;
}

.ds-clear-sub {
  font-size: clamp(1.4rem, 5vw, 2rem) !important;
  font-weight: 900 !important;
  color: #fff !important;
  text-shadow: 0 2px 10px rgba(0,0,0,0.5) !important;
  margin-top: 8px !important;
  animation: ds-shimmer 1.2s ease-in-out infinite alternate !important;
}

@keyframes ds-shimmer {
  from { opacity: 0.8; }
  to   { opacity: 1; text-shadow: 0 0 30px rgba(255,255,255,0.9), 0 2px 10px rgba(0,0,0,0.5); }
}

/* レスポンシブ */
@media (max-width: 480px) {
  .ds-prac-choice-btn {
    width: 72px !important;
    height: 72px !important;
    font-size: 1.3rem !important;
  }
  .ds-prac-question { font-size: 1.8rem !important; }
  .ds-main-tab-btn  { padding: 8px 16px !important; font-size: 14px !important; }
}

/* ==========================================
   モード選択ポップアップ (v2.1)
   ========================================== */

/* 設定バー */
.ds-prac-settings-bar {
  display: flex !important;
  align-items: center !important;
  justify-content: space-between !important;
  gap: 10px !important;
  background: #f1f5f9 !important;
  border-radius: 12px !important;
  padding: 10px 14px !important;
  margin: 16px 0 8px !important;
}

.ds-prac-settings-info {
  display: flex !important;
  gap: 8px !important;
  flex-wrap: wrap !important;
}

.ds-prac-settings-badge {
  background: var(--ds-main) !important;
  color: #fff !important;
  font-size: 13px !important;
  font-weight: bold !important;
  padding: 4px 12px !important;
  border-radius: 20px !important;
  white-space: nowrap !important;
}

.ds-prac-settings-badge-level {
  background: var(--ds-accent) !important;
  color: #1a1a1a !important;
}

.ds-prac-settings-btn {
  white-space: nowrap !important;
  padding: 8px 16px !important;
  border: 2px solid var(--ds-main) !important;
  border-radius: 10px !important;
  background: #fff !important;
  color: var(--ds-main) !important;
  font-size: 14px !important;
  font-weight: bold !important;
  cursor: pointer !important;
  transition: all 0.18s !important;
  flex-shrink: 0 !important;
}

.ds-prac-settings-btn:hover {
  background: var(--ds-main) !important;
  color: #fff !important;
}

/* オーバーレイ */
.ds-mode-overlay {
  display: none !important;
  position: fixed !important;
  inset: 0 !important;
  background: rgba(0,0,0,0.55) !important;
  z-index: 10000 !important;
  align-items: center !important;
  justify-content: center !important;
  padding: 16px !important;
}

.ds-mode-overlay.ds-mode-overlay-open {
  display: flex !important;
  animation: ds-overlay-in 0.2s ease !important;
}

@keyframes ds-overlay-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* ポップアップ本体 */
.ds-mode-popup {
  background: #fff !important;
  border-radius: 20px !important;
  padding: 28px 24px 20px !important;
  width: min(460px, 100%) !important;
  box-shadow: 0 20px 60px rgba(0,0,0,0.3) !important;
  animation: ds-popup-in 0.25s cubic-bezier(0.34,1.56,0.64,1) !important;
}

@keyframes ds-popup-in {
  from { transform: scale(0.85); opacity: 0; }
  to   { transform: scale(1);    opacity: 1; }
}

.ds-mode-popup-title {
  text-align: center !important;
  font-size: 1.25rem !important;
  font-weight: 900 !important;
  color: var(--ds-main) !important;
  margin-bottom: 18px !important;
}

/* モードカードボタン */
.ds-mode-popup-btns {
  display: flex !important;
  flex-direction: column !important;
  gap: 10px !important;
}

.ds-mode-popup-btn {
  display: flex !important;
  align-items: center !important;
  gap: 14px !important;
  width: 100% !important;
  padding: 14px 18px !important;
  border: 2px solid #e2e8f0 !important;
  border-radius: 14px !important;
  background: #fff !important;
  cursor: pointer !important;
  text-align: left !important;
  transition: all 0.18s !important;
}

.ds-mode-popup-btn:hover {
  border-color: var(--ds-main) !important;
  background: #f0f4f8 !important;
  transform: translateX(4px) !important;
}

.ds-mode-popup-btn.ds-prac-active {
  border-color: var(--ds-main) !important;
  background: var(--ds-main) !important;
  color: #fff !important;
}

.ds-mode-popup-btn.ds-prac-active .ds-mode-desc {
  color: rgba(255,255,255,0.75) !important;
}

.ds-mode-icon {
  font-size: 1.8rem !important;
  line-height: 1 !important;
  flex-shrink: 0 !important;
}

.ds-mode-name {
  font-size: 1.05rem !important;
  font-weight: 900 !important;
  line-height: 1.2 !important;
}

.ds-mode-desc {
  font-size: 0.8rem !important;
  color: #64748b !important;
  display: block !important;
  font-weight: normal !important;
  margin-top: 2px !important;
}

/* とじるボタン */
.ds-mode-popup-close {
  display: block !important;
  width: 100% !important;
  margin-top: 14px !important;
  padding: 10px !important;
  border: none !important;
  background: #f1f5f9 !important;
  color: #64748b !important;
  border-radius: 10px !important;
  font-size: 0.95rem !important;
  font-weight: bold !important;
  cursor: pointer !important;
  transition: background 0.15s !important;
}

.ds-mode-popup-close:hover {
  background: #e2e8f0 !important;
}

/* モバイル対応 */
@media (max-width: 480px) {
  .ds-mode-popup {
    padding: 20px 16px 16px !important;
  }
  .ds-mode-popup-btn {
    padding: 12px 14px !important;
  }
}

/* ==========================================
   シンプル化リファクタ (v2.2)
   ※ 旧設定バー・スコアバー・セクションラベルを上書き非表示
   ========================================== */

/* 旧スタイルを無効化 */
.ds-prac-settings-bar  { display: none !important; }
.ds-prac-score-bar     { display: none !important; }
.ds-prac-section-label { display: none !important; }
.ds-prac-level-btns    { display: none !important; } /* インラインのはポップアップ内のみ使用 */

/* ---- トップバー ---- */
.ds-prac-topbar {
  display: flex !important;
  align-items: center !important;
  gap: 10px !important;
  padding: 10px 0 6px !important;
}

.ds-prac-settings-btn {
  /* 上書き：コンパクトに */
  padding: 6px 14px !important;
  border: 2px solid var(--ds-main) !important;
  border-radius: 20px !important;
  background: #fff !important;
  color: var(--ds-main) !important;
  font-size: 13px !important;
  font-weight: bold !important;
  cursor: pointer !important;
  white-space: nowrap !important;
  flex-shrink: 0 !important;
  transition: all 0.15s !important;
}
.ds-prac-settings-btn:hover {
  background: var(--ds-main) !important;
  color: #fff !important;
}

.ds-prac-topbar-badges {
  display: flex !important;
  gap: 6px !important;
  flex-wrap: wrap !important;
  flex: 1 !important;
}

/* バッジは小さめに */
.ds-prac-settings-badge {
  background: var(--ds-main) !important;
  color: #fff !important;
  font-size: 12px !important;
  font-weight: bold !important;
  padding: 3px 10px !important;
  border-radius: 20px !important;
  white-space: nowrap !important;
}
.ds-prac-settings-badge-level {
  background: var(--ds-accent) !important;
  color: #1a1a1a !important;
}

/* スコアをトップバー右端に小さく */
.ds-prac-score {
  font-size: 1rem !important;
  font-weight: 900 !important;
  color: var(--ds-main) !important;
  white-space: nowrap !important;
  flex-shrink: 0 !important;
}

/* ---- 問題カードをより大きく ---- */
.ds-prac-question-card {
  margin: 10px 0 !important;
  padding: 32px 16px !important;
}

/* ---- 選択肢ボタン間隔を広げる ---- */
.ds-prac-choices {
  margin: 16px 0 !important;
}

/* ---- フィードバック・説明をコンパクトに ---- */
.ds-prac-feedback {
  font-size: 1.2rem !important;
  margin: 4px 0 !important;
}

/* ---- アクション行：リセットを小さいアイコンボタンに ---- */
.ds-prac-action-row {
  margin-top: 10px !important;
  gap: 10px !important;
}

.ds-prac-reset-btn {
  padding: 14px 18px !important;
  font-size: 1.1rem !important;
  min-width: unset !important;
}

/* ---- ポップアップ内レベルボタンは表示 ---- */
.ds-mode-popup .ds-prac-level-btns {
  display: flex !important;
  gap: 8px !important;
  flex-wrap: wrap !important;
  margin-bottom: 4px !important;
}

/* ポップアップ内セクション見出し */
.ds-popup-section-label {
  font-size: 13px !important;
  font-weight: bold !important;
  color: var(--ds-main) !important;
  margin: 0 0 8px !important;
  letter-spacing: 0.04em !important;
}

/* ==========================================
   レイアウト固定化 (v2.4)
   解答前後でUIが広がらないよう高さ固定
   ========================================== */

/* フィードバック・説明・次へを固定高さのブロックにまとめる */
.ds-prac-feedback {
  height: 2rem !important;
  margin: 12px 0 0 !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  /* 初期は透明 */
  opacity: 0 !important;
  transition: opacity 0.2s !important;
}

.ds-prac-feedback.ds-prac-correct,
.ds-prac-feedback.ds-prac-wrong {
  opacity: 1 !important;
}

.ds-prac-explanation {
  height: 3rem !important;        /* 固定高さ */
  max-height: unset !important;   /* 旧スタイル上書き */
  overflow: hidden !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  margin: 4px 0 !important;
  padding: 0 16px !important;
  opacity: 0 !important;
  transition: opacity 0.25s 0.1s !important;
}

.ds-prac-explanation.ds-prac-explanation-visible {
  opacity: 1 !important;
  /* max-height上書きは不要・padding上書きも不要 */
  padding: 0 16px !important;
}

/* 次へボタンエリアも固定高さ */
.ds-prac-action-row {
  height: 60px !important;
  margin-top: 8px !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
}

.ds-prac-next-btn {
  /* 非表示でもスペースは確保（opacityで制御） */
  opacity: 0 !important;
  pointer-events: none !important;
  transition: opacity 0.25s !important;
  /* position・transformは使わずopacityのみ */
}

.ds-prac-next-btn.ds-prac-visible {
  opacity: 1 !important;
  pointer-events: auto !important;
}

/* リセットボタンは非表示（削除済みだが念のため） */
.ds-prac-reset-btn {
  display: none !important;
}

/* ==========================================
   数字づくりタブ (v2.6)
   ========================================== */

.ds-numbuilder-section {
  width: 100% !important;
  display: none !important;
}
.ds-numbuilder-section.ds-tab-active {
  display: block !important;
}

.ds-nb-area {
  max-width: 560px !important;
  margin: 16px auto !important;
  padding: 0 12px 24px !important;
  font-family: "UD Digi Kyokasho N-R","UD デジタル 教科書体 N-R","Noto Sans JP",sans-serif !important;
  position: relative !important;
}

/* トップバー */
.ds-nb-topbar {
  display: flex !important;
  align-items: center !important;
  justify-content: space-between !important;
  margin-bottom: 12px !important;
}

.ds-nb-level-btns {
  display: flex !important;
  gap: 8px !important;
}

.ds-nb-level-btn {
  padding: 6px 16px !important;
  border: 2px solid var(--ds-main) !important;
  border-radius: 20px !important;
  font-size: 14px !important;
  font-weight: bold !important;
  background: #fff !important;
  color: var(--ds-main) !important;
  cursor: pointer !important;
  transition: all 0.15s !important;
}

.ds-nb-level-btn.ds-prac-active {
  background: var(--ds-main) !important;
  color: #fff !important;
}

.ds-nb-score-wrap {
  font-size: 14px !important;
  font-weight: bold !important;
  color: var(--ds-main) !important;
}

.ds-nb-score {
  font-size: 1.1rem !important;
  color: var(--ds-accent) !important;
  font-weight: 900 !important;
}

/* 問題文 */
.ds-nb-task-label {
  text-align: center !important;
  font-size: clamp(1.1rem, 4vw, 1.4rem) !important;
  font-weight: 900 !important;
  color: var(--ds-main) !important;
  background: #f1f5f9 !important;
  border-radius: 12px !important;
  padding: 14px 16px !important;
  margin-bottom: 16px !important;
  min-height: 3.2rem !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
}

/* スロットエリア */
.ds-nb-slots-wrap {
  display: flex !important;
  justify-content: center !important;
  margin-bottom: 20px !important;
}

.ds-nb-slots {
  display: flex !important;
  align-items: center !important;
  gap: 6px !important;
}

.ds-nb-slot {
  width: 72px !important;
  height: 80px !important;
  border: 3px solid var(--ds-main) !important;
  border-radius: 14px !important;
  background: #fff !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  font-size: 2.4rem !important;
  font-weight: 900 !important;
  color: var(--ds-main) !important;
  cursor: pointer !important;
  transition: all 0.15s !important;
  position: relative !important;
}

.ds-nb-slot:empty::after {
  content: '' !important;
  display: block !important;
  width: 20px !important;
  height: 4px !important;
  background: #cbd5e1 !important;
  border-radius: 2px !important;
}

.ds-nb-slot-filled {
  background: #f0f7ff !important;
  border-color: #3b82f6 !important;
}

.ds-nb-slot-filled:hover {
  background: #fee2e2 !important;
  border-color: #ef4444 !important;
}

.ds-nb-slot-correct {
  background: #d1fae5 !important;
  border-color: #10b981 !important;
  color: #10b981 !important;
}

.ds-nb-slot-wrong {
  background: #fee2e2 !important;
  border-color: #ef4444 !important;
  color: #ef4444 !important;
}

.ds-nb-dot {
  font-size: 3rem !important;
  font-weight: 900 !important;
  color: var(--ds-main) !important;
  line-height: 1 !important;
  padding: 0 2px !important;
  user-select: none !important;
}

/* カードエリア */
.ds-nb-cards-wrap {
  display: flex !important;
  justify-content: center !important;
  margin-bottom: 16px !important;
  min-height: 80px !important;
}

.ds-nb-cards {
  display: flex !important;
  gap: 10px !important;
  flex-wrap: wrap !important;
  justify-content: center !important;
  align-items: center !important;
}

.ds-nb-card {
  width: 64px !important;
  height: 72px !important;
  border: 3px solid var(--ds-accent) !important;
  border-radius: 12px !important;
  background: #fff !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  font-size: 2.2rem !important;
  font-weight: 900 !important;
  color: #1a1a1a !important;
  cursor: pointer !important;
  box-shadow: 0 3px 8px rgba(0,0,0,0.12) !important;
  transition: all 0.15s !important;
  user-select: none !important;
}

.ds-nb-card:hover {
  background: var(--ds-accent) !important;
  color: #fff !important;
  transform: translateY(-4px) !important;
  box-shadow: 0 8px 20px rgba(212,175,55,0.4) !important;
}

.ds-nb-card:active {
  transform: translateY(0) scale(0.95) !important;
}

/* フィードバック・説明 */
.ds-nb-feedback {
  text-align: center !important;
  font-size: 1.3rem !important;
  font-weight: 900 !important;
  height: 2rem !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  margin: 0 0 4px !important;
}

.ds-nb-feedback.ds-nb-correct { color: #10b981 !important; }
.ds-nb-feedback.ds-nb-wrong   { color: #ef4444 !important; }

.ds-nb-explanation {
  text-align: center !important;
  font-size: 1rem !important;
  font-weight: bold !important;
  color: var(--ds-main) !important;
  height: 2rem !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  opacity: 0 !important;
  transition: opacity 0.25s !important;
  margin-bottom: 8px !important;
}

.ds-nb-explanation.ds-nb-explan-visible {
  opacity: 1 !important;
}

/* ボタン行 */
.ds-nb-btn-row {
  display: flex !important;
  gap: 8px !important;
  justify-content: center !important;
  flex-wrap: wrap !important;
  margin-top: 8px !important;
}

.ds-nb-del-btn,
.ds-nb-allDel-btn {
  padding: 10px 18px !important;
  border: 2px solid #94a3b8 !important;
  border-radius: 10px !important;
  background: #fff !important;
  color: #64748b !important;
  font-size: 0.95rem !important;
  font-weight: bold !important;
  cursor: pointer !important;
  transition: all 0.15s !important;
}

.ds-nb-del-btn:hover,
.ds-nb-allDel-btn:hover {
  background: #f1f5f9 !important;
  border-color: #64748b !important;
}

.ds-nb-decide-btn {
  padding: 12px 32px !important;
  border: none !important;
  border-radius: 12px !important;
  background: linear-gradient(135deg, var(--ds-main) 0%, #2d5a8f 100%) !important;
  color: #fff !important;
  font-size: 1.1rem !important;
  font-weight: 900 !important;
  cursor: pointer !important;
  box-shadow: 0 4px 15px rgba(0,0,0,0.2) !important;
  transition: transform 0.15s !important;
}

.ds-nb-decide-btn:hover {
  transform: translateY(-2px) !important;
}

.ds-nb-next-btn {
  padding: 12px 32px !important;
  border: none !important;
  border-radius: 12px !important;
  background: linear-gradient(135deg, #10b981 0%, #059669 100%) !important;
  color: #fff !important;
  font-size: 1.1rem !important;
  font-weight: 900 !important;
  cursor: pointer !important;
  box-shadow: 0 4px 15px rgba(16,185,129,0.3) !important;
  transition: transform 0.15s !important;
}

.ds-nb-next-btn:hover {
  transform: translateY(-2px) !important;
}

.ds-nb-hidden {
  display: none !important;
}

/* クリア演出 */
.ds-nb-confetti {
  display: none !important;
  position: fixed !important;
  inset: 0 !important;
  z-index: 9999 !important;
  pointer-events: none !important;
  overflow: hidden !important;
}

.ds-nb-confetti.ds-nb-confetti-active {
  display: block !important;
}

/* モバイル */
@media (max-width: 480px) {
  .ds-nb-slot { width: 58px !important; height: 66px !important; font-size: 2rem !important; }
  .ds-nb-card { width: 54px !important; height: 60px !important; font-size: 1.9rem !important; }
  .ds-nb-dot  { font-size: 2.4rem !important; }
}

/* ==========================================
   数字づくり D&D スタイル (v2.7)
   ========================================== */

/* ドラッグ中のゴースト */
.ds-nb-card-ghost {
  position: fixed !important;
  z-index: 99999 !important;
  pointer-events: none !important;
  opacity: 0.85 !important;
  transform: scale(1.12) rotate(3deg) !important;
  box-shadow: 0 12px 32px rgba(0,0,0,0.3) !important;
  transition: none !important;
}

/* ドラッグ元カード（半透明に） */
.ds-nb-card.ds-nb-dragging,
.ds-nb-slot.ds-nb-dragging {
  opacity: 0.3 !important;
  transform: none !important;
}

/* ドロップ先スロットのホバー */
.ds-nb-slot.ds-nb-slot-hover {
  border-color: #3b82f6 !important;
  background: #dbeafe !important;
  transform: scale(1.08) !important;
  box-shadow: 0 0 0 4px rgba(59,130,246,0.3) !important;
}

/* カードのカーソル */
.ds-nb-card {
  cursor: grab !important;
}
.ds-nb-card:active {
  cursor: grabbing !important;
}

/* スロット内カードもgrab */
.ds-nb-slot-filled {
  cursor: grab !important;
}

/* ==========================================
   レスポンシブ文字・サイズ調整 (v2.8)
   clamp(最小, vw基準, 最大) で画面幅に自動追従
   ========================================== */

/* --- 練習問題：式の文字 --- */
.ds-prac-question {
  /* スマホ320px → 2.2rem、タブレット768px → 3.2rem、PC1200px → 4.5rem */
  font-size: clamp(2.2rem, 8vw, 4.5rem) !important;
  letter-spacing: 0.06em !important;
}

/* 問題カードも少し広げる */
.ds-prac-question-card {
  padding: clamp(20px, 4vw, 48px) 16px !important;
}

/* 3択ボタンも画面幅に連動 */
.ds-prac-choice-btn {
  width:  clamp(72px, 18vw, 110px) !important;
  height: clamp(72px, 18vw, 110px) !important;
  font-size: clamp(1.5rem, 5vw, 2.4rem) !important;
}

/* --- 数字づくり：スロット --- */
.ds-nb-slot {
  width:     clamp(60px, 14vw, 100px) !important;
  height:    clamp(68px, 16vw, 110px) !important;
  font-size: clamp(2.2rem, 7vw, 3.8rem) !important;
  border-radius: clamp(10px, 2vw, 16px) !important;
}

/* --- 数字づくり：カード --- */
.ds-nb-card {
  width:     clamp(56px, 13vw, 92px) !important;
  height:    clamp(64px, 15vw, 100px) !important;
  font-size: clamp(2rem, 6.5vw, 3.4rem) !important;
  border-radius: clamp(10px, 2vw, 14px) !important;
}

/* --- 数字づくり：小数点ドット --- */
.ds-nb-dot {
  font-size: clamp(2.8rem, 8vw, 4.5rem) !important;
}

/* --- スロット間のgapも画面幅に連動 --- */
.ds-nb-slots {
  gap: clamp(4px, 1.5vw, 12px) !important;
}

.ds-nb-cards {
  gap: clamp(8px, 2vw, 16px) !important;
}

/* --- モバイル上書きを解除（clampが担うため不要に） --- */
@media (max-width: 480px) {
  .ds-nb-slot { width: unset !important; height: unset !important; font-size: unset !important; }
  .ds-nb-card { width: unset !important; height: unset !important; font-size: unset !important; }
  .ds-nb-dot  { font-size: unset !important; }
  .ds-prac-question { font-size: unset !important; }
}

/* ==========================================
   練習問題：式を1行固定 (v2.9)
   ========================================== */
.ds-prac-question {
  white-space: nowrap !important;
  overflow: hidden !important;   /* はみ出し非表示（fitTextが縮めるので通常は不要） */
}

/* ==========================================
   練習問題：式を確実に1行表示 (v2.13)
   fitTextに頼らずCSSで完結させる
   ========================================== */

/* 問題カードは幅いっぱい・横スクロール禁止 */
.ds-prac-question-card {
  width: 100% !important;
  box-sizing: border-box !important;
  overflow: hidden !important;
}

/* 式テキスト：折り返しなし＋縮小スケールで収める */
.ds-prac-question {
  white-space: nowrap !important;
  overflow: visible !important;   /* hiddenを解除 */
  display: block !important;
  /* font-sizeはfitTextが動的に変えるので初期値だけ指定 */
  font-size: clamp(1.8rem, 6vw, 4rem) !important;
}


/* ==========================================
   クリア演出：背景パネル修正 (v2.15)
   ========================================== */

.ds-clear-message {
  background: rgba(10, 20, 40, 0.82) !important;
  backdrop-filter: blur(6px) !important;
  -webkit-backdrop-filter: blur(6px) !important;
  border: 3px solid var(--ds-accent) !important;
  border-radius: 24px !important;
  padding: 28px 40px !important;
  box-shadow:
    0 0 0 6px rgba(212,175,55,0.2),
    0 20px 60px rgba(0,0,0,0.6) !important;
  /* 文字幅に合わせて自動調整 */
  width: max-content !important;
  max-width: 90vw !important;
  min-width: 0 !important;
  white-space: nowrap !important;
}

.ds-clear-title {
  text-shadow: 0 2px 8px rgba(0,0,0,0.5) !important;
  white-space: nowrap !important;
}

.ds-clear-sub {
  color: #fff !important;
  text-shadow: 0 1px 4px rgba(0,0,0,0.6) !important;
  white-space: nowrap !important;
}

/* ==========================================
   しあげタブ (v2.16)
   ========================================== */

.ds-finish-section {
  width: 100% !important;
  display: none !important;
}
.ds-finish-section.ds-tab-active {
  display: block !important;
}

.ds-fin-area {
  max-width: 600px !important;
  margin: 16px auto !important;
  padding: 0 12px 24px !important;
  font-family: "UD Digi Kyokasho N-R","UD デジタル 教科書体 N-R","Noto Sans JP",sans-serif !important;
  position: relative !important;
}

/* トップバー */
.ds-fin-topbar {
  display: flex !important;
  align-items: center !important;
  justify-content: space-between !important;
  margin-bottom: 10px !important;
}

.ds-fin-level-btns {
  display: flex !important;
  gap: 8px !important;
}

.ds-fin-level-btn {
  padding: 6px 16px !important;
  border: 2px solid var(--ds-main) !important;
  border-radius: 20px !important;
  font-size: 14px !important;
  font-weight: bold !important;
  background: #fff !important;
  color: var(--ds-main) !important;
  cursor: pointer !important;
  transition: all 0.15s !important;
}
.ds-fin-level-btn.ds-prac-active {
  background: var(--ds-main) !important;
  color: #fff !important;
}

.ds-fin-score-wrap {
  font-size: 14px !important;
  font-weight: bold !important;
  color: var(--ds-main) !important;
}
.ds-fin-score {
  font-size: 1.1rem !important;
  color: var(--ds-accent) !important;
  font-weight: 900 !important;
}

/* 問題カード */
.ds-fin-question-card {
  background: var(--ds-base) !important;
  border: 3px solid var(--ds-main) !important;
  border-radius: 16px !important;
  padding: clamp(16px, 3vw, 32px) 20px !important;
  margin-bottom: 14px !important;
  text-align: center !important;
  width: 100% !important;
  box-sizing: border-box !important;
  overflow: hidden !important;
}

.ds-fin-question {
  font-size: clamp(1.8rem, 6vw, 3.6rem) !important;
  font-weight: 900 !important;
  color: var(--ds-main) !important;
  white-space: nowrap !important;
  overflow: visible !important;
  letter-spacing: 0.04em !important;
}

/* 解答スロット */
.ds-fin-slots-wrap {
  display: flex !important;
  justify-content: center !important;
  margin-bottom: 10px !important;
  min-height: 80px !important;
  align-items: center !important;
}

.ds-fin-slots {
  display: flex !important;
  align-items: center !important;
  gap: clamp(4px, 1.5vw, 10px) !important;
}

.ds-fin-slot {
  width:  clamp(52px, 12vw, 80px) !important;
  height: clamp(60px, 14vw, 90px) !important;
  border: 3px solid var(--ds-main) !important;
  border-radius: 12px !important;
  background: #fff !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  font-size: clamp(2rem, 6vw, 3.2rem) !important;
  font-weight: 900 !important;
  color: var(--ds-main) !important;
  cursor: pointer !important;
  transition: all 0.15s !important;
}

.ds-fin-slot:not(.ds-fin-slot-filled)::after {
  content: '' !important;
  display: block !important;
  width: 18px !important;
  height: 4px !important;
  background: #cbd5e1 !important;
  border-radius: 2px !important;
}

.ds-fin-slot-filled {
  background: #f0f7ff !important;
  border-color: #3b82f6 !important;
  cursor: pointer !important;
}
.ds-fin-slot-filled:hover {
  background: #fee2e2 !important;
  border-color: #ef4444 !important;
}

.ds-fin-slot-correct {
  background: #d1fae5 !important;
  border-color: #10b981 !important;
  color: #10b981 !important;
}
.ds-fin-slot-wrong {
  background: #fee2e2 !important;
  border-color: #ef4444 !important;
  color: #ef4444 !important;
}

.ds-fin-dot {
  font-size: clamp(2.6rem, 7vw, 4rem) !important;
  font-weight: 900 !important;
  color: var(--ds-main) !important;
  line-height: 1 !important;
  user-select: none !important;
}

/* フィードバック・説明 */
.ds-fin-feedback {
  text-align: center !important;
  font-size: 1.3rem !important;
  font-weight: 900 !important;
  height: 2rem !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  margin: 4px 0 !important;
}
.ds-fin-feedback.ds-fin-correct { color: #10b981 !important; }
.ds-fin-feedback.ds-fin-wrong   { color: #ef4444 !important; }

.ds-fin-explanation {
  text-align: center !important;
  font-size: 1rem !important;
  font-weight: bold !important;
  color: var(--ds-main) !important;
  height: 2rem !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  opacity: 0 !important;
  transition: opacity 0.25s !important;
  margin-bottom: 10px !important;
}
.ds-fin-explanation.ds-fin-explan-visible {
  opacity: 1 !important;
}

/* 数字パッド */
.ds-fin-numpad {
  display: grid !important;
  grid-template-columns: repeat(5, 1fr) !important;
  gap: clamp(6px, 1.5vw, 12px) !important;
  margin-bottom: 12px !important;
}

.ds-fin-num-btn {
  aspect-ratio: 1 !important;
  min-height: 60px !important;
  border: 2px solid var(--ds-main) !important;
  border-radius: 12px !important;
  background: #fff !important;
  color: var(--ds-main) !important;
  font-size: clamp(1.4rem, 4vw, 2rem) !important;
  font-weight: 900 !important;
  cursor: pointer !important;
  transition: all 0.12s !important;
  box-shadow: 0 3px 6px rgba(0,0,0,0.1) !important;
}
.ds-fin-num-btn:hover {
  background: var(--ds-main) !important;
  color: #fff !important;
  transform: translateY(-2px) !important;
}
.ds-fin-num-btn:active {
  transform: scale(0.94) !important;
}

/* 操作ボタン行 */
.ds-fin-btn-row {
  display: flex !important;
  gap: 8px !important;
  justify-content: center !important;
  flex-wrap: wrap !important;
}

.ds-fin-del-btn,
.ds-fin-allDel-btn {
  padding: 10px 16px !important;
  border: 2px solid #94a3b8 !important;
  border-radius: 10px !important;
  background: #fff !important;
  color: #64748b !important;
  font-size: 0.95rem !important;
  font-weight: bold !important;
  cursor: pointer !important;
  transition: all 0.15s !important;
}
.ds-fin-del-btn:hover,
.ds-fin-allDel-btn:hover {
  background: #f1f5f9 !important;
}

.ds-fin-decide-btn {
  padding: 12px 28px !important;
  border: none !important;
  border-radius: 12px !important;
  background: linear-gradient(135deg, var(--ds-main) 0%, #2d5a8f 100%) !important;
  color: #fff !important;
  font-size: 1.1rem !important;
  font-weight: 900 !important;
  cursor: pointer !important;
  box-shadow: 0 4px 15px rgba(0,0,0,0.2) !important;
  transition: transform 0.15s !important;
}
.ds-fin-decide-btn:hover { transform: translateY(-2px) !important; }

.ds-fin-next-btn {
  padding: 12px 28px !important;
  border: none !important;
  border-radius: 12px !important;
  background: linear-gradient(135deg, #10b981 0%, #059669 100%) !important;
  color: #fff !important;
  font-size: 1.1rem !important;
  font-weight: 900 !important;
  cursor: pointer !important;
  transition: transform 0.15s !important;
}
.ds-fin-next-btn:hover { transform: translateY(-2px) !important; }

.ds-fin-hidden { display: none !important; }

/* クリア演出 */
.ds-fin-confetti {
  display: none !important;
  position: fixed !important;
  inset: 0 !important;
  z-index: 9999 !important;
  pointer-events: none !important;
  overflow: hidden !important;
}
.ds-fin-confetti.ds-fin-confetti-active {
  display: block !important;
}

/* ==========================================
   しあげ：数字パッド調整 (v2.17)
   ========================================== */

/* 4列グリッドに変更（1〜9 + 0 + . = 11個） */
.ds-fin-numpad {
  grid-template-columns: repeat(4, 1fr) !important;
  gap: clamp(5px, 1.2vw, 10px) !important;
  max-width: 360px !important;
  margin-left: auto !important;
  margin-right: auto !important;
}

/* ボタンを小さく */
.ds-fin-num-btn {
  min-height: 48px !important;
  font-size: clamp(1.1rem, 3.5vw, 1.5rem) !important;
  border-radius: 10px !important;
  aspect-ratio: unset !important;
  padding: 8px 4px !important;
}

/* 小数点ボタン：色を変えて区別 */
.ds-fin-dot-btn {
  background: #f8fafc !important;
  border-color: var(--ds-accent) !important;
  color: var(--ds-main) !important;
  font-size: clamp(1.4rem, 4vw, 2rem) !important;
  font-weight: 900 !important;
}
.ds-fin-dot-btn:hover {
  background: var(--ds-accent) !important;
  color: #fff !important;
}

/* ==========================================
   しあげ：レイアウト1画面化 (v2.18)
   ========================================== */

/* エリア全体をflexで縦に詰める */
.ds-fin-area {
  max-width: 560px !important;
  padding: 0 12px 8px !important;  /* 下paddingを減らす */
}

/* 問題カードをコンパクトに */
.ds-fin-question-card {
  padding: clamp(10px, 2vw, 20px) 16px !important;
  margin-bottom: 8px !important;
}

.ds-fin-question {
  font-size: clamp(1.6rem, 5.5vw, 3rem) !important;
}

/* スロットを小さく */
.ds-fin-slots-wrap {
  min-height: unset !important;
  margin-bottom: 4px !important;
}

.ds-fin-slot {
  width:  clamp(44px, 10vw, 68px) !important;
  height: clamp(50px, 12vw, 76px) !important;
  font-size: clamp(1.6rem, 5vw, 2.6rem) !important;
}

/* 小数点ドットをスロットと同じ高さに揃える・サイズ統一 */
.ds-fin-dot {
  font-size: clamp(1.8rem, 5vw, 2.8rem) !important;
  padding: 0 1px !important;
  align-self: center !important;
}

/* フィードバック・説明の高さを圧縮 */
.ds-fin-feedback {
  height: 1.6rem !important;
  font-size: 1.1rem !important;
  margin: 2px 0 !important;
}

.ds-fin-explanation {
  height: 1.6rem !important;
  font-size: 0.9rem !important;
  margin-bottom: 6px !important;
}

/* 数字パッドを全体的に小さく・隙間を詰める */
.ds-fin-numpad {
  gap: clamp(4px, 1vw, 8px) !important;
  margin-bottom: 8px !important;
  max-width: 320px !important;
}

.ds-fin-num-btn {
  min-height: 42px !important;
  font-size: clamp(1rem, 3vw, 1.3rem) !important;
  padding: 6px 4px !important;
  border-radius: 8px !important;
}

/* 操作ボタンも小さく */
.ds-fin-btn-row {
  gap: 6px !important;
}

.ds-fin-del-btn,
.ds-fin-allDel-btn {
  padding: 8px 12px !important;
  font-size: 0.85rem !important;
}

.ds-fin-decide-btn,
.ds-fin-next-btn {
  padding: 10px 22px !important;
  font-size: 1rem !important;
}

/* トップバーも詰める */
.ds-fin-topbar {
  margin-bottom: 6px !important;
}

/* ==========================================
   しあげ：自由入力方式 (v2.19)
   ========================================== */

/* 入力エリアを横並びフレックスに */
.ds-fin-slots {
  display: flex !important;
  align-items: center !important;
  gap: 4px !important;
  flex-wrap: nowrap !important;
  min-height: 70px !important;
}

/* 入力済み数字カード */
.ds-fin-input-card {
  width:  clamp(44px, 10vw, 68px) !important;
  height: clamp(52px, 12vw, 76px) !important;
  border: 3px solid #3b82f6 !important;
  border-radius: 12px !important;
  background: #f0f7ff !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  font-size: clamp(1.8rem, 5.5vw, 3rem) !important;
  font-weight: 900 !important;
  color: var(--ds-main) !important;
  cursor: pointer !important;
  transition: all 0.12s !important;
  user-select: none !important;
}
.ds-fin-input-card:hover {
  background: #fee2e2 !important;
  border-color: #ef4444 !important;
}

/* 小数点カード */
.ds-fin-input-dot {
  font-size: clamp(2rem, 6vw, 3.4rem) !important;
  font-weight: 900 !important;
  color: var(--ds-main) !important;
  padding: 0 2px !important;
  cursor: pointer !important;
  user-select: none !important;
  line-height: 1 !important;
  align-self: flex-end !important;
  margin-bottom: 6px !important;
}
.ds-fin-input-dot:hover {
  color: #ef4444 !important;
}

/* 正解・不正解ハイライト */
.ds-fin-input-card.ds-fin-slot-correct,
.ds-fin-input-dot.ds-fin-slot-correct {
  border-color: #10b981 !important;
  background: #d1fae5 !important;
  color: #10b981 !important;
}
.ds-fin-input-card.ds-fin-slot-wrong,
.ds-fin-input-dot.ds-fin-slot-wrong {
  border-color: #ef4444 !important;
  background: #fee2e2 !important;
  color: #ef4444 !important;
}

/* カーソル（点滅） */
.ds-fin-cursor {
  width: 3px !important;
  height: clamp(44px, 10vw, 64px) !important;
  background: var(--ds-main) !important;
  border-radius: 2px !important;
  animation: ds-blink 1s step-end infinite !important;
  flex-shrink: 0 !important;
}
@keyframes ds-blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}