/* =================================================================
 * ぶんしょうだいドリル 固有スタイル
 * すべてのセレクタを #app-kids-bunshoudai でスコープ
 * ================================================================= */

#app-kids-bunshoudai {
    --bd-accent: #f0a500;
    --bd-accent-text: var(--kids-warm-text, #a06a00);   /* 文字に使うとき（白背景で読める濃さ） */
}

/* ---------- レベルえらび（2×2 グリッド） ---------- */
#app-kids-bunshoudai .bd-level-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.6rem;
}

#app-kids-bunshoudai .bd-level-grid .btn {
    border-radius: 0.9rem;
    min-height: 66px;
    line-height: 1.25;
}

@media (max-width: 400px) {
    #app-kids-bunshoudai .bd-level-grid {
        grid-template-columns: 1fr;
    }
}

/* ---------- ヒント（子ども語の1行解説） ---------- */
#app-kids-bunshoudai .bd-hint {
    min-height: 0;
    font-size: 1.05rem;
    font-weight: 700;
    line-height: 1.4;
    text-align: center;
    color: var(--kids-accent-text, var(--bs-primary));
    margin: 0;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: max-height 0.3s ease, opacity 0.3s ease, margin 0.3s ease;
}

#app-kids-bunshoudai .bd-hint.show {
    max-height: 6rem;
    opacity: 1;
    margin: 0.4rem 0 0;
}

#app-kids-bunshoudai .bd-hint::before {
    content: "\1F4A1";
    margin-inline-end: 0.3rem;
}

/* ---------- がんばりきろく ---------- */
#app-kids-bunshoudai .bd-record-box {
    background: var(--bs-body-bg);
    border: 2px solid var(--bs-border-color);
    border-radius: 1rem;
    padding: 0.75rem 0.5rem;
}

#app-kids-bunshoudai .bd-record-num {
    font-size: 2rem;
    font-weight: 800;
    line-height: 1.1;
    color: var(--bs-body-color);
}

/* ---------- しんちょくバー ---------- */
#app-kids-bunshoudai .bd-progress {
    border-radius: 0;
}

#app-kids-bunshoudai .bd-progress .progress-bar {
    transition: width 0.35s ease;
}

/* ---------- もんだいぶん ---------- */
#app-kids-bunshoudai .bd-story {
    font-size: clamp(1.2rem, 4.6vw, 1.6rem);
    font-weight: 700;
    line-height: 1.9;
    color: var(--bs-body-color);
    background: var(--bs-body-tertiary-bg, var(--bs-tertiary-bg));
    border: 2px solid var(--bs-border-color);
    border-radius: 1rem;
    padding: 1rem 1.1rem;
}

#app-kids-bunshoudai .bd-num {
    /* --bs-primary(#0d6efd) は ライト用の 青で、ダークだと 背景に 沈む。
       テーマで 明るさが 切りかわる -text-emphasis を つかう */
    color: var(--bs-primary-text-emphasis, var(--bs-primary));
    font-weight: 800;
    font-size: 1.2em;
    padding: 0 0.05em;
}

/* ---------- ステップ ラベル ---------- */
#app-kids-bunshoudai .bd-step-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 800;
    font-size: 1.1rem;
    margin: 0.75rem 0 0.5rem;
    color: var(--bs-body-color);
}

#app-kids-bunshoudai .bd-step-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.8rem;
    height: 1.8rem;
    border-radius: 50%;
    background: var(--bs-primary);
    color: #fff;
    font-size: 1rem;
    font-weight: 800;
    flex: 0 0 auto;
}

/* ---------- しきの選択肢 ---------- */
#app-kids-bunshoudai .bd-shiki-choices {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.6rem;
}

@media (min-width: 480px) {
    #app-kids-bunshoudai .bd-shiki-choices {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

#app-kids-bunshoudai .bd-shiki-btn {
    font-size: 1.6rem;
    font-weight: 800;
    padding: 0.7rem 0.4rem;
    border-radius: 1rem;
    letter-spacing: 0.04em;
    min-height: 64px;
}

#app-kids-bunshoudai .bd-shiki-btn.is-shake {
    animation: bd-shake 0.35s ease;
}

/* ---------- こたえのしき ---------- */
#app-kids-bunshoudai .bd-answer-formula {
    font-size: clamp(2rem, 9vw, 3rem);
    font-weight: 800;
    line-height: 1.2;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.3em;
    flex-wrap: wrap;
    color: var(--bs-body-color);
}

#app-kids-bunshoudai .bd-op {
    color: var(--kids-accent-text, var(--bs-primary));
}

#app-kids-bunshoudai .bd-answer-box {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 1.8em;
    padding: 0 0.2em;
    border-bottom: 6px solid var(--bd-accent);
    color: var(--bd-accent-text);
    min-height: 1.2em;
}

#app-kids-bunshoudai .bd-answer-box.is-empty {
    color: var(--bs-secondary-color);
    opacity: 0.5;
}

#app-kids-bunshoudai .bd-answer-box.is-shake {
    animation: bd-shake 0.35s ease;
}

/* ---------- はんてい メッセージ ---------- */
#app-kids-bunshoudai .bd-feedback {
    min-height: 2.2rem;
    font-size: 1.4rem;
    font-weight: 800;
    margin: 0.6rem 0 0;
    line-height: 1.3;
    text-align: center;
}

#app-kids-bunshoudai .bd-feedback.is-correct {
    color: var(--bs-success);
}

#app-kids-bunshoudai .bd-feedback.is-wrong {
    color: var(--bs-danger);
}

#app-kids-bunshoudai .bd-feedback.is-answer {
    color: var(--kids-accent-text, var(--bs-primary));
}

/* ---------- テンキー ---------- */
#app-kids-bunshoudai .bd-keypad {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.6rem;
    max-width: 340px;
}

#app-kids-bunshoudai .bd-key {
    font-size: 1.8rem;
    font-weight: 800;
    padding: 0.5rem 0;
    border-radius: 1rem;
    min-height: 64px;
    box-shadow: 0 2px 0 rgba(0, 0, 0, 0.12);
    transition: transform 0.05s ease;
}

#app-kids-bunshoudai .bd-key.btn-light {
    background: var(--bs-body-bg);
    color: var(--bs-body-color);
    border: 2px solid var(--bs-border-color);
}

#app-kids-bunshoudai .bd-key:active {
    transform: translateY(2px);
    box-shadow: none;
}

#app-kids-bunshoudai .bd-key-ok,
#app-kids-bunshoudai .bd-key-del {
    font-size: 1.5rem;
}

/* ---------- アニメーション ---------- */
@keyframes bd-pop {
    0% { transform: scale(0.4); opacity: 0; }
    60% { transform: scale(1.25); opacity: 1; }
    100% { transform: scale(1); opacity: 1; }
}

#app-kids-bunshoudai .bd-feedback.is-animate {
    animation: bd-pop 0.4s ease;
}

@keyframes bd-shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-7px); }
    75% { transform: translateX(7px); }
}

/* ---------- けっか ---------- */
#app-kids-bunshoudai .bd-result-emoji {
    font-size: clamp(3.5rem, 16vw, 5rem);
    line-height: 1.25;
    margin-bottom: 0.5rem;
    animation: bd-pop 0.5s ease;
}

#app-kids-bunshoudai .bd-result-box {
    background: var(--bs-body-tertiary-bg, var(--bs-tertiary-bg));
    border: 2px solid var(--bs-border-color);
    border-radius: 1rem;
    padding: 0.9rem 0.5rem;
}

#app-kids-bunshoudai .bd-result-num {
    font-size: 1.9rem;
    font-weight: 800;
    line-height: 1.1;
    color: var(--bs-body-color);
}

#app-kids-bunshoudai .bd-result-marks {
    font-size: 1.6rem;
    letter-spacing: 0.15em;
    word-break: break-word;
}

/* ---------- モバイル微調整 ---------- */
@media (max-width: 575.98px) {
    #app-kids-bunshoudai .bd-keypad {
        gap: 0.5rem;
        max-width: 300px;
    }

    #app-kids-bunshoudai .bd-key {
        min-height: 58px;
        font-size: 1.6rem;
    }

    #app-kids-bunshoudai .bd-shiki-btn {
        min-height: 56px;
        font-size: 1.4rem;
    }
}