/* ================================================================
   kakezan-bunkai-game.css  v2.0.0
   ================================================================ */

/* ===== ラップ・変数 ===== */
.kbg-wrap {
    --kbg-text:        #1f2937;
    --kbg-muted:       #6b7280;
    --kbg-line:        #dbe2ea;
    --kbg-blue:        #3b82f6;
    --kbg-blue-soft:   #dbeafe;
    --kbg-green:       #10b981;
    --kbg-green-soft:  #d1fae5;
    --kbg-orange:      #f59e0b;
    --kbg-orange-soft: #fef3c7;
    --kbg-red:         #ef4444;
    --kbg-shadow:      0 8px 24px rgba(0,0,0,0.08);
    --kbg-header-h:    56px;

    position: relative;
    font-family: "BIZ UDPGothic", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
    color: var(--kbg-text);
    background: radial-gradient(circle at top, #ffffff, #f6f7fb);
    border-radius: 16px;
    overflow: hidden;
    display: grid;
    grid-template-rows: var(--kbg-header-h) 1fr;
    height: 620px;
}
.kbg-wrap *, .kbg-wrap *::before, .kbg-wrap *::after { box-sizing: border-box; }

/* ===== ヘッダー ===== */
.kbg-header {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 0 16px;
    height: var(--kbg-header-h);
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--kbg-line);
    box-shadow: 0 2px 12px rgba(0,0,0,0.04);
    z-index: 5;
}
.kbg-title {
    font-size: clamp(14px, 1.8vw, 20px);
    font-weight: 900;
    margin: 0;
    white-space: nowrap;
    line-height: 1;
}
.kbg-header-right {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-left: auto;
}

/* タイマーバー */
.kbg-timer-bar-wrap {
    width: clamp(70px, 12vw, 150px);
    height: 10px;
    background: #e5e7eb;
    border-radius: 999px;
}
.kbg-timer-bar {
    height: 100%;
    width: 100%;
    background: var(--kbg-green);
    border-radius: 999px;
    transition: width .9s linear, background .3s ease;
    transform-origin: left center;
}
.kbg-timer-bar.warn   { background: var(--kbg-orange); }
.kbg-timer-bar.danger { background: var(--kbg-red); }

.kbg-timer-label {
    font-size: clamp(18px, 2.2vw, 26px);
    font-weight: 900;
    min-width: 2ch;
    text-align: right;
    font-variant-numeric: tabular-nums;
}
.kbg-timer-label.warn   { color: var(--kbg-orange); }
.kbg-timer-label.danger { color: var(--kbg-red); }

.kbg-score-display {
    font-size: clamp(13px, 1.5vw, 18px);
    font-weight: 900;
    white-space: nowrap;
}
.kbg-score-display span { color: var(--kbg-blue); font-size: 1.2em; }

.kbg-combo-display {
    font-size: clamp(12px, 1.3vw, 16px);
    font-weight: 800;
    color: var(--kbg-orange);
    white-space: nowrap;
    display: none;
}
.kbg-combo-display.show { display: block; }

/* ===== ボード ===== */
.kbg-main {
    position: relative;
    padding: 0;
}
.kbg-board {
    position: relative;
    width: calc(100% - 40px);
    height: calc(100% - 16px);
    margin: 0 20px 16px;
    border-radius: 20px;
    background: linear-gradient(180deg, rgba(255,255,255,0.88), rgba(255,255,255,0.72));
    box-shadow: inset 0 0 0 1px rgba(255,255,255,0.65), var(--kbg-shadow);
}

/* ===== お題 ===== */
.kbg-target {
    position: absolute;
    left: 50%; top: 14px;
    transform: translateX(-50%);
    z-index: 1;
    text-align: center;
    pointer-events: none;
}
.kbg-target-label {
    font-size: clamp(11px, 1.2vw, 15px);
    font-weight: 700;
    color: var(--kbg-muted);
}
.kbg-target-number {
    font-size: clamp(48px, 7vw, 88px);
    line-height: 1;
    font-weight: 900;
    letter-spacing: .04em;
    color: var(--kbg-text);
    transition: color .25s;
}
.kbg-target.hit  .kbg-target-number { color: var(--kbg-green); }
.kbg-target.over .kbg-target-number { color: var(--kbg-red); }

/* ===== SVG線 ===== */
.kbg-lines {
    position: absolute; inset: 0;
    width: 100%; height: 100%;
    z-index: 2; pointer-events: none;
}

/* ===== 数字ボタン ===== */
.kbg-number-btn {
    position: absolute;
    width: clamp(60px, 8vw, 100px);
    aspect-ratio: 1;
    border-radius: 999px;
    border: 3px solid transparent;
    background: #fff;
    display: grid; place-items: center;
    font-size: clamp(20px, 2.6vw, 36px);
    font-weight: 900;
    cursor: pointer;
    box-shadow: 0 8px 20px rgba(0,0,0,0.10);
    transition: transform .12s, border-color .2s, background .2s, box-shadow .2s;
    z-index: 3;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
    font-family: inherit;
}
.kbg-number-btn:hover  { transform: translateY(-2px); }
.kbg-number-btn:active { transform: scale(0.97); }

.kbg-number-btn.selected.easy {
    background: var(--kbg-green-soft); border-color: var(--kbg-green); color: #065f46;
    transform: scale(1.08); box-shadow: 0 12px 26px rgba(16,185,129,0.22);
}
.kbg-number-btn.selected.normal {
    background: var(--kbg-blue-soft); border-color: var(--kbg-blue); color: #1d4ed8;
    transform: scale(1.08); box-shadow: 0 12px 26px rgba(59,130,246,0.22);
}
.kbg-number-btn.selected.hard {
    background: var(--kbg-orange-soft); border-color: var(--kbg-orange); color: #b45309;
    transform: scale(1.08); box-shadow: 0 12px 26px rgba(245,158,11,0.22);
}
.kbg-number-btn.bad { animation: kbg-bad .35s ease; }
@keyframes kbg-bad {
    0%,100% { box-shadow: 0 8px 20px rgba(0,0,0,0.10); }
    50%      { box-shadow: 0 0 0 8px rgba(239,68,68,0.08), 0 10px 22px rgba(239,68,68,0.22); }
}

/* ===== メッセージ ===== */
.kbg-message {
    position: absolute;
    left: 50%; bottom: 20px;
    transform: translateX(-50%);
    z-index: 5;
    min-width: 200px; max-width: 80%;
    text-align: center;
    padding: 9px 16px;
    border-radius: 14px;
    background: rgba(255,255,255,0.96);
    box-shadow: var(--kbg-shadow);
    font-size: clamp(14px, 1.6vw, 19px);
    font-weight: 900;
    opacity: 0; pointer-events: none;
    transition: opacity .18s, transform .18s;
    white-space: nowrap;
}
.kbg-message.show { opacity: 1; transform: translateX(-50%) translateY(-4px); }
.kbg-message.success { color: var(--kbg-green); }
.kbg-message.error   { color: var(--kbg-red); }

/* ===== スコアポップ ===== */
.kbg-score-pop {
    position: absolute; z-index: 8;
    font-size: clamp(20px, 2.8vw, 36px);
    font-weight: 900; color: var(--kbg-orange);
    pointer-events: none; opacity: 0;
}
.kbg-score-pop.fly { animation: kbg-fly .9s ease forwards; }
@keyframes kbg-fly {
    0%   { opacity: 1; transform: translateY(0) scale(1); }
    60%  { opacity: 1; transform: translateY(-50px) scale(1.2); }
    100% { opacity: 0; transform: translateY(-90px) scale(0.8); }
}

/* ===== フッターチップ ===== */
.kbg-footer-tip {
    position: absolute; right: 12px; bottom: 10px; z-index: 4;
    color: var(--kbg-muted); font-weight: 700;
    font-size: clamp(11px, 1.1vw, 13px);
    background: rgba(255,255,255,0.7); border-radius: 10px;
    padding: 5px 7px; line-height: 1.4; text-align: right;
}

/* ===== オーバーレイ共通 ===== */
.kbg-overlay {
    display: none;
    position: absolute; inset: 0; z-index: 20;
    background: rgba(15,23,42,0.55);
    backdrop-filter: blur(5px);
    align-items: center; justify-content: center;
    border-radius: 16px;
}
.kbg-overlay.show { display: flex; }

/* ===== ポップアップ共通 ===== */
.kbg-popup {
    background: #fff;
    border-radius: 24px;
    padding: 32px 36px;
    text-align: center;
    box-shadow: 0 24px 60px rgba(0,0,0,0.2);
    min-width: 280px; max-width: 90%;
    animation: kbg-pop-in .25s cubic-bezier(0.34,1.56,0.64,1);
}
@keyframes kbg-pop-in {
    from { opacity: 0; transform: scale(0.88); }
    to   { opacity: 1; transform: scale(1); }
}
.kbg-popup-title {
    font-size: clamp(20px, 3vw, 28px);
    font-weight: 900; margin: 0 0 20px;
}

/* ===== レベル選択 ===== */
.kbg-level-btns {
    display: flex; flex-direction: column; gap: 10px;
    margin-bottom: 22px;
}
.kbg-level-btn {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    border-radius: 14px;
    border: 2px solid var(--kbg-line);
    background: #f9fafb;
    cursor: pointer;
    text-align: left;
    font-family: inherit;
    transition: border-color .15s, background .15s, transform .1s;
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
}
.kbg-level-btn:hover  { transform: translateY(-1px); }
.kbg-level-btn:active { transform: scale(0.98); }
.kbg-level-btn.active[data-diff="easy"]   { border-color: var(--kbg-green);  background: var(--kbg-green-soft); }
.kbg-level-btn.active[data-diff="normal"] { border-color: var(--kbg-blue);   background: var(--kbg-blue-soft); }
.kbg-level-btn.active[data-diff="hard"]   { border-color: var(--kbg-orange); background: var(--kbg-orange-soft); }

.kbg-level-star { font-size: 18px; }
.kbg-level-name { font-size: clamp(15px, 2vw, 18px); font-weight: 900; }
.kbg-level-desc { font-size: clamp(11px, 1.3vw, 13px); color: var(--kbg-muted); font-weight: 700; }

/* OKボタン */
.kbg-start-btn {
    appearance: none;
    border: none; border-radius: 999px;
    padding: 13px 36px;
    font-size: clamp(15px, 1.8vw, 18px);
    font-weight: 900; cursor: pointer;
    background: linear-gradient(135deg, #34d399, #10b981);
    color: #fff;
    box-shadow: 0 8px 20px rgba(16,185,129,0.35);
    transition: transform .12s, box-shadow .12s;
    font-family: inherit;
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
}
.kbg-start-btn:hover  { transform: translateY(-2px); box-shadow: 0 12px 28px rgba(16,185,129,0.4); }
.kbg-start-btn:active { transform: scale(0.97); }

/* ===== カウントダウン ===== */
.kbg-countdown-num {
    font-size: clamp(80px, 18vw, 160px);
    font-weight: 900;
    color: #fff;
    text-shadow: 0 4px 30px rgba(0,0,0,0.3);
    animation: kbg-cd-pop .85s ease forwards;
}
@keyframes kbg-cd-pop {
    0%   { opacity: 0; transform: scale(1.6); }
    20%  { opacity: 1; transform: scale(1); }
    75%  { opacity: 1; transform: scale(1); }
    100% { opacity: 0; transform: scale(0.6); }
}

/* ===== 結果画面 ===== */
.kbg-result-popup { padding: 28px 36px; }

.kbg-result-date {
    font-size: clamp(12px, 1.3vw, 15px);
    font-weight: 700; color: var(--kbg-muted);
    margin-bottom: 4px;
}
.kbg-result-title {
    font-size: clamp(22px, 3vw, 32px);
    font-weight: 900; margin: 0 0 4px;
}
.kbg-result-score {
    font-size: clamp(56px, 11vw, 100px);
    font-weight: 900; color: var(--kbg-orange);
    line-height: 1; margin: 8px 0 4px;
}
.kbg-result-score::after { content: "点"; font-size: .45em; color: var(--kbg-muted); }
.kbg-result-detail {
    font-size: clamp(13px, 1.4vw, 16px);
    color: var(--kbg-muted); font-weight: 700;
    margin-bottom: 20px; line-height: 1.7;
}
.kbg-result-btns {
    display: flex; gap: 10px;
    justify-content: center; flex-wrap: wrap;
}
.kbg-back-btn {
    appearance: none;
    border: 2px solid var(--kbg-line);
    border-radius: 999px;
    padding: 11px 24px;
    font-size: clamp(13px, 1.5vw, 16px);
    font-weight: 800; cursor: pointer;
    background: #fff; color: var(--kbg-text);
    font-family: inherit;
    transition: transform .12s, background .15s;
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
}
.kbg-back-btn:hover  { transform: translateY(-1px); background: #f9fafb; }
.kbg-back-btn:active { transform: scale(0.97); }

/* ===== レスポンシブ ===== */
@media (max-width: 600px) {
    .kbg-wrap { height: 540px; --kbg-header-h: 52px; }
    .kbg-popup { padding: 24px 20px; min-width: 0; width: 90%; }
    .kbg-level-btn { grid-template-columns: auto 1fr; }
    .kbg-level-desc { display: none; }
}