/* =================================================================
 * むしくいざん（虫食い算）固有スタイル
 * すべてのセレクタを #app-kids-mushikui でスコープ
 * ================================================================= */

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

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

#app-kids-mushikui .km-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-mushikui .km-progress {
    border-radius: 0;
}

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

/* ---------- しき（□を含むもんだい表示） ---------- */
#app-kids-mushikui .km-question {
    font-size: clamp(2.2rem, 11vw, 3.5rem);
    font-weight: 800;
    line-height: 1.2;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.35em;
    flex-wrap: wrap;
    letter-spacing: 0.02em;
    color: var(--bs-body-color);
}

/* しきの かたまり（「□ ＋」「16」）。この 中では 絶対に 折らない */
#app-kids-mushikui .km-eq-side {
    display: inline-flex;
    align-items: center;
    gap: 0.35em;
    white-space: nowrap;
}

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

#app-kids-mushikui .km-answer-box {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 1.6em;
    padding: 0 0.15em;
    border-radius: 0.5rem;
    border: 4px dashed var(--km-accent);
    color: var(--km-accent-text);
    min-height: 1.2em;
    line-height: 1;
}

#app-kids-mushikui .km-answer-box.is-empty {
    color: var(--km-accent-text);
    opacity: 0.85;
}

#app-kids-mushikui .km-answer-box.is-correct {
    border-style: solid;
    border-color: var(--bs-success);
    color: var(--bs-success);
}

#app-kids-mushikui .km-answer-box.is-reveal {
    border-style: solid;
    border-color: var(--bs-primary);
    color: var(--kids-accent-text, var(--bs-primary));
}

/* ---------- ヒント共通 ---------- */
#app-kids-mushikui .km-hint-area {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    border: 2px dashed var(--bs-border-color);
    border-radius: 1rem;
    animation: km-pop 0.35s ease;
}

#app-kids-mushikui .km-hint-guide {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--bs-body-color);
    text-align: center;
}

/* ---------- さくらんぼ計算のヒント ---------- */
#app-kids-mushikui .km-sakuranbo {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.1rem;
}

#app-kids-mushikui .km-sk-top,
#app-kids-mushikui .km-sk-bottom {
    display: flex;
    justify-content: center;
    gap: 2.5rem;
}

#app-kids-mushikui .km-sk-cell {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 3rem;
    height: 3rem;
    font-size: 1.6rem;
    font-weight: 800;
    border-radius: 50%;
    background: var(--bs-body-bg);
    color: var(--bs-body-color);
    border: 3px solid var(--bs-border-color);
}

#app-kids-mushikui .km-sk-whole {
    border-color: var(--bs-primary);
    color: var(--kids-accent-text, var(--bs-primary));
}

#app-kids-mushikui .km-sk-part {
    border-color: var(--bs-info);
}

#app-kids-mushikui .km-sk-cell.is-box {
    border-style: dashed;
    border-color: var(--km-accent);
    color: var(--km-accent-text);
}

/* さくらんぼの枝（2本の斜線） */
#app-kids-mushikui .km-sk-branch {
    position: relative;
    width: 5.5rem;
    height: 1.3rem;
}

#app-kids-mushikui .km-sk-line {
    position: absolute;
    top: 0;
    left: 50%;
    width: 2px;
    height: 1.6rem;
    background: var(--bs-secondary-color);
    transform-origin: top center;
}

#app-kids-mushikui .km-sk-line-l {
    transform: rotate(38deg);
}

#app-kids-mushikui .km-sk-line-r {
    transform: rotate(-38deg);
}

/* ---------- 九九の段のヒント ---------- */
#app-kids-mushikui .km-kuku-row {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.4rem;
}

#app-kids-mushikui .km-kuku-chip {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    min-width: 3.2rem;
    padding: 0.3rem 0.4rem;
    border: 2px solid var(--bs-border-color);
    border-radius: 0.6rem;
    background: var(--bs-body-bg);
    color: var(--bs-body-color);
    line-height: 1.1;
}

#app-kids-mushikui .km-kuku-mul {
    font-size: 0.9rem;
    font-weight: 700;
}

#app-kids-mushikui .km-kuku-eq {
    font-size: 0.8rem;
    color: var(--bs-secondary-color);
}

#app-kids-mushikui .km-kuku-chip.is-target {
    border-color: var(--km-accent);
    background: rgba(240, 165, 0, 0.15);
    box-shadow: 0 0 0 3px rgba(240, 165, 0, 0.25);
}

#app-kids-mushikui .km-kuku-chip.is-target .km-kuku-mul,
#app-kids-mushikui .km-kuku-chip.is-target .km-kuku-eq {
    color: var(--km-accent-text);
    font-weight: 800;
}

/* ---------- なぜ その数か（かいせつ） ---------- */
#app-kids-mushikui .km-explain {
    text-align: center; /* 演出は画面の中央に出す */
    font-weight: 700;
    color: var(--bs-secondary-color);
    animation: km-pop 0.35s ease;
}

/* ---------- ヒントブロック（段ごと） ---------- */
#app-kids-mushikui .km-hint-block {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    width: 100%;
    animation: km-pop 0.3s ease;
}

/* ---------- レベル別ベスト ---------- */
#app-kids-mushikui .km-result-best {
    display: inline-block;
    padding: 0.55rem 0.9rem;
    border: 2px dashed var(--bs-border-color);
    border-radius: 0.9rem;
    background: var(--bs-body-tertiary-bg, var(--bs-tertiary-bg));
    font-size: 0.95rem;
    line-height: 1.6;
}

#app-kids-mushikui .km-best-mode {
    font-weight: 800;
    color: var(--bs-body-color);
}

#app-kids-mushikui .km-best-item {
    display: inline-block;
    font-weight: 700;
    color: var(--bs-body-color);
    white-space: nowrap;
    margin: 0 0.15rem;
}

#app-kids-mushikui .km-best-new {
    display: inline-block;
    font-weight: 800;
    color: var(--km-accent-text);
    margin-left: 0.15rem;
}

/* ---------- はんてい メッセージ ---------- */
#app-kids-mushikui .km-feedback {
    text-align: center; /* 演出は画面の中央に出す */
    min-height: 2.4rem;
    font-size: 1.6rem;
    font-weight: 800;
    margin: 0.5rem 0;
    line-height: 1.2;
}

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

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

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

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

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

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

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

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

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

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

#app-kids-mushikui .km-question.is-shake {
    animation: km-shake 0.35s ease;
}

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

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

#app-kids-mushikui .km-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-mushikui .km-keypad {
        gap: 0.5rem;
        max-width: 300px;
    }

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

    #app-kids-mushikui .km-sk-top,
    #app-kids-mushikui .km-sk-bottom {
        gap: 1.8rem;
    }
}

/* PC で 7つの 選択肢が よこ1れつに 分配され、1つ 132px しか なく
   「たしざん／の□／しょう1」と 3行に 割れて いた（2026-08-26 実機指摘）。
   btn-group は 内容幅で 分配する ので、数が 多いと **幅の 広い PC ほど 1つが 狭く なる**。
   等幅グリッドで 折り返す（スマホ 2れつ ／ PC 4れつ）。 */
@media (min-width: 768px) {
    #app-kids-mushikui .mk-modes {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }
}