/* ── ダブルタップ拡大防止 ── */
*, *::before, *::after {
    -webkit-tap-highlight-color: transparent;
}
button, a, [role="button"] {
    touch-action: manipulation;
}

/* ============================================================
 * meteorite-bundle.css  —  スマホファースト統合スタイル
 * ============================================================ */

/* ===== リセット ===== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* ===== ベース ===== */
html, body {
    width: 100%;
    height: 100%;
    font-family: 'Arial', sans-serif;
    background: linear-gradient(135deg, #0f2027, #203a43, #2c5364);
    color: white;
    overflow: hidden;
}

/* ===== 画面共通 ===== */
.screen {
    position: fixed;
    inset: 0;
    display: none;
    background: linear-gradient(135deg, #0a1929, #1a3a5a, #2c5364);
    z-index: 1000;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}

.screen.active {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    /* パディングをコンテナ側に委ねてはみ出しを防ぐ */
    padding: 0;
}

/* ===== サブ画面コンテナ（設定・実績・格納庫・ショップ等）===== */
.screen-container {
    width: 100%;
    max-width: 540px;
    display: flex;
    flex-direction: column;
    background: rgba(0, 20, 40, 0.92);
    border-radius: 0;           /* スマホは角丸なし・フルスクリーン感 */
    border: none;
    border-top: 2px solid #00ffff;
    border-bottom: 2px solid #00ffff;
    box-shadow: none;
    padding: max(14px, env(safe-area-inset-top)) 16px
             max(12px, env(safe-area-inset-bottom)) 16px;
    /* 高さをビューポートに合わせる */
    height: 100dvh;
    max-height: 100dvh;
    overflow: hidden;           /* コンテナ自体はhidden */
}

.screen-container h2 {
    text-align: center;
    font-size: clamp(1.2rem, 5vw, 1.7rem);
    color: #00ffff;
    text-shadow: 0 0 10px #00ffff;
    margin-bottom: 12px;
    flex-shrink: 0;
    padding-bottom: 10px;
    border-bottom: 1px solid rgba(0,255,255,0.2);
}

/* スクロール可能なコンテンツ領域 */
.screen-content {
    flex: 1;
    min-height: 0;              /* flexでスクロールが効くために必須 */
    overflow-y: auto;
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: contain;
    padding: 4px 2px 8px;
    margin-bottom: 10px;
}

.screen-content::-webkit-scrollbar { width: 4px; }
.screen-content::-webkit-scrollbar-track { background: rgba(0,20,40,0.5); border-radius: 2px; }
.screen-content::-webkit-scrollbar-thumb { background: #00ffff; border-radius: 2px; }

/* ===== タイトル画面 ===== */
#titleScreen {
    background: linear-gradient(135deg, #0f2027, #203a43, #2c5364);
    z-index: 1000;
}

#titleScreen.active {
    justify-content: center;
}

.title-container {
    text-align: center;
    position: relative;
    z-index: 2;
    width: 100%;
    max-width: 400px;
    padding: 16px 16px;
    /* 縦が短い端末でも全ボタンが見えるよう最小限のpaddingに */
}

.game-title {
    font-size: clamp(1.4rem, 6.5vw, 2.6rem);
    text-shadow: 0 0 10px #00ffff, 0 0 20px #00ffff;
    margin-bottom: 4px;
    line-height: 1.2;
}

.game-subtitle {
    font-size: clamp(0.8rem, 3vw, 1.1rem);
    color: #88ddff;
    margin-bottom: 2px;
}

/* タイトル背景装飾 */
.title-background {
    position: fixed;
    inset: 0;
    z-index: 1;
    pointer-events: none;
    overflow: hidden;
}

.menu-buttons {
    display: flex;
    flex-direction: column;
    gap: 8px;           /* 10px→8px: ボタン間を詰める */
    margin: 16px 0 0;
    width: 100%;
}

.menu-btn {
    padding: 11px 20px; /* 14px→11px: 縦パディングを縮小 */
    font-size: clamp(0.88rem, 3.2vw, 1.05rem); /* 最大値を抑える */
    font-weight: bold;
    background: linear-gradient(135deg, rgba(0,180,219,0.85), rgba(0,131,176,0.85));
    color: white;
    border: 2px solid #00ffff;
    border-radius: 50px;
    cursor: pointer;
    transition: transform 0.15s, box-shadow 0.15s;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}

.menu-btn:hover, .menu-btn:active {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0,180,219,0.5);
}

.start-btn {
    background: linear-gradient(135deg, rgba(0,220,120,0.9), rgba(0,160,80,0.9));
    border-color: #00ff88;
    box-shadow: 0 0 12px rgba(0,255,136,0.3);
}

/* ===== ゲーム画面 ===== */
#gameScreen {
    background: linear-gradient(135deg, #0f2027, #203a43, #2c5364);
    z-index: 100;
}

#gameScreen.active {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    padding: max(0px, env(safe-area-inset-top)) 0
             max(0px, env(safe-area-inset-bottom)) 0;
    overflow: hidden;
}

/* ゲーム画面のタイトルヘッダーは非表示 */
#gameScreen header {
    display: none;
}

/* ゲーム統計（上部の外部表示）は非表示 */
.game-stats {
    display: none;
}

/* ゲーム画面のコンテナ */
#gameScreen .container {
    display: flex;
    flex-direction: column;
    width: 100%;
    height: 100dvh;
    max-width: 100%;
    padding: 0;
    gap: 0;
}

/* ゲームフィールド */
.game-area {
    position: relative;
    width: 100%;
    flex: 1;              /* 残りの高さをすべて使う */
    min-height: 0;
    background: rgba(0, 10, 20, 0.7);
    overflow: hidden;
}

#gameCanvas {
    width: 100% !important;
    height: 100% !important;
    display: block;
}

/* フィールド内ステータス（絶対配置オーバーレイ）*/
.game-area-stats {
    position: absolute;
    top: 8px;
    left: 8px;
    background: rgba(0, 10, 20, 0.82);
    border: 1px solid rgba(100, 150, 255, 0.35);
    border-radius: 8px;
    padding: 6px 10px;
    z-index: 20;
    backdrop-filter: blur(4px);
    max-height: 65vh;
    overflow-y: auto;
    overflow-x: hidden;
    min-width: 120px;
}

.game-area-stats.hidden {
    opacity: 0;
    pointer-events: none;
    transform: translateY(-8px);
}

.game-area-stats::-webkit-scrollbar { width: 3px; }
.game-area-stats::-webkit-scrollbar-thumb { background: rgba(100,150,255,0.5); border-radius: 2px; }

.game-area-stat {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: 3px 0;
    font-size: 0.82rem;
    color: white;
    gap: 6px;
}

.game-area-stat .label { color: #88ddff; }
.game-area-stat .value { font-weight: bold; }

/* ゲーム中ボタン（フィールド下）*/




/* ゲーム中ボタン：右上オーバーレイ */
.game-controls-overlay {
    position: absolute;
    top: 10px;
    right: 10px;
    z-index: 25;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.overlay-btn {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: 2px solid rgba(0, 255, 255, 0.6);
    background: rgba(0, 20, 50, 0.75);
    backdrop-filter: blur(4px);
    color: white;
    font-size: 1.2rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.15s, border-color 0.15s;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}

.overlay-btn:hover, .overlay-btn:active {
    background: rgba(0, 60, 120, 0.9);
    border-color: #00ffff;
}

/* ゲームオーバー時の下部ボタン */
#gameOverControls {
    flex-shrink: 0;
    display: flex;
    gap: 10px;
    padding: 8px 16px max(8px, env(safe-area-inset-bottom));
    background: rgba(0, 5, 15, 0.85);
    border-top: 1px solid rgba(0,255,255,0.15);
    justify-content: center;
    width: 100%;
}

#gameOverControls .menu-btn,
#gameOverControls button {
    flex: 1;
    max-width: 180px;
    padding: 11px 8px;
    font-size: 0.9rem;
}

/* ゲームオーバーオーバーレイ */
.game-over {
    display: none;
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0.75);
    z-index: 50;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.game-over.active {
    display: flex;
}

.game-over h2 {
    font-size: clamp(1.6rem, 6vw, 2.4rem);
    color: #ff4444;
    text-shadow: 0 0 15px #ff4444;
    margin-bottom: 16px;
}

/* ===== 共通ボタン ===== */
.back-btn {
    flex-shrink: 0;             /* 縮まない＝常に表示 */
    display: block;
    width: fit-content;
    min-width: 140px;
    margin: 8px auto 0;
    padding: 11px 28px;
    font-size: 0.95rem;
    font-weight: bold;
    background: linear-gradient(135deg, #ff9800, #f57c00);
    color: white;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: transform 0.15s, box-shadow 0.15s;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}

.back-btn:hover, .back-btn:active {
    transform: translateY(-2px);
    box-shadow: 0 5px 18px rgba(255,152,0,0.5);
}

/* ===== 設定画面 ===== */
.settings-content {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.setting-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 10px 0;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.setting-item label {
    font-size: 0.95rem;
    color: #aaccff;
    flex-shrink: 0;
}

.setting-select {
    background: rgba(0,30,60,0.9);
    color: white;
    border: 1px solid #00ffff;
    border-radius: 8px;
    padding: 6px 10px;
    font-size: 0.9rem;
    cursor: pointer;
    min-width: 70px;
}

.slider-row {
    display: flex;
    align-items: center;
    gap: 10px;
    flex: 1;
}

.setting-slider {
    flex: 1;
    accent-color: #00ffff;
}

/* ===== 実績画面 ===== */
/* achievements-content: JSがinnerHTMLで書き換えるためscreen-contentと同等のスクロールを直接付与 */
.achievements-content {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: contain;
    padding: 4px 2px 8px;
    margin-bottom: 10px;
}

.achievements-content::-webkit-scrollbar { width: 4px; }
.achievements-content::-webkit-scrollbar-thumb { background: #00ffff; border-radius: 2px; }

.achievement {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    background: rgba(0,20,50,0.6);
    border: 1px solid rgba(0,255,255,0.2);
    border-radius: 10px;
}

.achievement.locked {
    opacity: 0.5;
    filter: grayscale(0.6);
}

.achievement-icon { font-size: 1.8rem; flex-shrink: 0; }

.achievement-info h3 { font-size: 0.95rem; color: #00ffff; }
.achievement-info p  { font-size: 0.8rem;  color: #aaaaaa; margin-top: 2px; }

/* ===== 遊び方画面 ===== */
.instruction-content { display: flex; flex-direction: column; gap: 16px; }
.instruction-section h3 { color: #00ffff; margin-bottom: 8px; font-size: 1rem; }
.instruction-section p  { font-size: 0.88rem; color: #ccc; line-height: 1.5; margin-bottom: 4px; }

.item-example {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    border-bottom: 1px solid rgba(255,255,255,0.07);
}
.instruction-item-icon { font-size: 1.4rem; flex-shrink: 0; width: 32px; text-align: center; }
.item-description { font-size: 0.85rem; color: #ccc; line-height: 1.4; }

/* ===== 格納庫・ショップ（スクロール調整）===== */
.storage-container, .shop-scroll-container {
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    flex: 1;
    min-height: 0;
}

.storage-container::-webkit-scrollbar,
.shop-scroll-container::-webkit-scrollbar { width: 4px; }
.storage-container::-webkit-scrollbar-thumb,
.shop-scroll-container::-webkit-scrollbar-thumb { background: #00ffff; border-radius: 2px; }

/* ===== 統計画面 ===== */


/* ===== PC・タブレット対応（769px以上）===== */
@media (min-width: 769px) {
    /* タイトル画面のボタンをやや大きく */
    .menu-btn {
        padding: 13px 32px;
        font-size: 1rem;
    }
    .menu-buttons { gap: 10px; }

    /* サブ画面はカード形式でセンタリング */
    .screen.active {
        padding: 24px 16px;
        justify-content: center;
    }
    .screen-container {
        height: auto;
        max-height: calc(100dvh - 48px);
        border-radius: 16px;
        border: 2px solid #00ffff;
        box-shadow: 0 0 30px rgba(0,255,255,0.25);
        padding: 24px 24px 20px;
    }

    /* ゲーム画面はセンタリングして最大幅を設定 */
    #gameScreen .container {
        max-width: 480px;
        margin: 0 auto;
        height: 100dvh;
    }

    .game-controls .menu-btn {
        padding: 12px 24px;
        font-size: 1rem;
    }
}

/* ===== 横向きスマホ ===== */
@media (max-height: 500px) and (orientation: landscape) {
    .screen-container {
        max-height: calc(100dvh - 16px);
        padding: 12px;
    }

    .screen-container h2 { font-size: 1.1rem; margin-bottom: 8px; }

    .controls {
        padding: 4px 16px max(4px, env(safe-area-inset-bottom));
    }

    .game-controls .menu-btn {
        padding: 6px 8px;
        font-size: 0.8rem;
    }
}

/* ===== アクセシビリティ ===== */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}


/* ============================================================
 * ゲーム固有スタイル（アイテム・燃料・格納庫・ショップ等）
 * ============================================================ */
.shield-icon {
    background: linear-gradient(135deg, #00ffff, #0088ff);
    border: 2px solid #ffffff;
}

.shield-active {
    opacity: 0.8 !important;
    animation: shieldPulse 1s infinite;
    background: radial-gradient(
        circle,
        rgba(0, 255, 255, 0.6) 0%,
        rgba(0, 200, 255, 0.4) 30%,
        rgba(0, 150, 255, 0.2) 60%,
        rgba(0, 0, 0, 0) 80%
    );
}

.shield-extension-effect {
    pointer-events: none;
    font-family: 'Arial', sans-serif;
}

.shield-hit {
    animation: shieldHit 0.3s ease-out;
}

.shield-hit-effect {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(
        circle at var(--mouse-x, 50%) var(--mouse-y, 50%),
        rgba(0, 255, 255, 0.8) 0%,
        rgba(0, 200, 255, 0.6) 20%,
        rgba(0, 150, 255, 0.4) 40%,
        transparent 70%
    );
    pointer-events: none;
    z-index: 7;
    opacity: 0;
    transition: opacity 0.3s;
}

.shield-hit-active {
    opacity: 1;
    animation: shieldHitPulse 0.5s ease-out;
}

.wormhole-icon {
    background: linear-gradient(135deg, #8a2be2, #4b0082);
    border: 2px solid #00ffff;
}

.wormhole-active {
    opacity: 0.8 !important;
    animation: wormholeSpin 2s infinite linear;
}

.wormhole-active.enhanced {
    opacity: 0.9 !important;
    animation:
        wormholeSpin 1.5s infinite linear,
        wormholePulse 0.5s infinite alternate,
        colorShift 2s infinite alternate;
}

.item-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    margin-right: 15px;
}

.item-icon {
    font-size: 1.8rem;
    flex-shrink: 0;
    margin-top: 2px;
}

.item-icon {
    font-size: 2rem;
    margin-bottom: 8px;
    filter: drop-shadow(0 0 8px currentColor);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.1);
}

.item-collect-text {
    position: absolute;
    color: #00ff00;
    font-weight: bold;
    font-size: 1.2rem;
    text-shadow: 0 0 5px #000;
    z-index: 20;
    pointer-events: none;
    animation: floatUp 1.5s ease-out forwards;
}

.item-cooldown {
    position: absolute;
    top: 10px;
    right: 10px;
    background: rgba(0, 0, 0, 0.7);
    padding: 5px 10px;
    border-radius: 5px;
    border: 1px solid #00ffff;
    color: white;
    font-size: 0.9rem;
    z-index: 15;
}

.item-spawn-warning {
    position: absolute;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    border: 3px dashed #ffff00;
    animation: spawnWarning 1s infinite;
    pointer-events: none;
    z-index: 8;
}

.ore-epic {
    font-size: 1em; /* 他の数値と同じサイズに */
    font-weight: bold;
}

.ore-common {
    color: #888888; /* 鉄鉱石 - 灰色 */
}

.ore-rare {
    color: #C0C0C0; /* 銀鉱石 - 銀色 */
}

.ore-epic {
    color: #FFD700; /* 金鉱石 - 金色 */
}

.ore-icon-blink {
    animation: oreBlink 0.5s ease-in-out;
}

.ore-epic.ore-icon-blink {
    animation: oreBlink 0.5s ease-in-out;
    display: inline-block;
}

.ore-epic.ore-pulse {
    animation: orePulse 2s ease-in-out infinite;
}

.ore-common.ore-blink-common {
    animation: oreBlink 0.6s ease-in-out, orePulseCommon 3s infinite;
}

.ore-rare.ore-blink-rare {
    animation: oreBlink 0.6s ease-in-out, orePulseRare 2.5s infinite;
}

.ore-epic.ore-blink-epic {
    animation: oreBlink 0.6s ease-in-out, orePulseEpic 2s infinite;
}

.ore-icon-blink {
    animation: oreBlink 0.6s ease-in-out;
    display: inline-block;
}

.ore-pulse {
    animation: orePulse 2s ease-in-out infinite;
}

.ore-blink-common {
    animation: oreBlink 0.6s ease-in-out, orePulseCommon 3s infinite;
}

.ore-blink-rare {
    animation: oreBlink 0.6s ease-in-out, orePulseRare 2.5s infinite;
}

.ore-blink-epic {
    animation: oreBlink 0.6s ease-in-out, orePulseEpic 2s infinite;
}

.floating-text {
    position: absolute;
    color: white;
    font-weight: bold;
    font-size: 1rem;
    text-shadow: 0 0 10px currentColor;
    pointer-events: none;
    z-index: 1000;
    animation: floatUp 1.5s ease-out forwards;
}

.floating-text.common { color: #888888; }

.floating-text.rare { color: #C0C0C0; }

.floating-text.epic { color: #FFD700; }

.fuel-display {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 12px;
    background: rgba(0, 10, 20, 0.8);
    border-radius: 25px;
    border: 2px solid rgba(100, 150, 255, 0.3);
    font-family: 'Arial', 'Segoe UI', sans-serif;
    min-width: 130px;
    transition: all 0.3s ease;
    backdrop-filter: blur(5px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.fuel-display.fuel-warning {
    border-color: rgba(255, 170, 0, 0.4);
    background: rgba(40, 30, 0, 0.8);
}

.fuel-display.fuel-warning .fuel-fill {
    background: linear-gradient(90deg, 
        #ffaa00 0%, 
        #ffbb33 30%, 
        #ffcc44 70%, 
        #ffaa00 100%);
    box-shadow: 
        0 0 8px rgba(255, 170, 0, 0.6),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.fuel-display.fuel-warning .fuel-percent {
    color: #ffaa00;
    text-shadow: 0 0 6px rgba(255, 170, 0, 0.5);
}

.fuel-display.fuel-warning .fuel-icon {
    color: #ffaa00;
    filter: drop-shadow(0 0 4px rgba(255, 170, 0, 0.6));
}

.fuel-display.fuel-critical {
    border-color: rgba(255, 68, 68, 0.5);
    background: rgba(40, 0, 0, 0.8);
    animation: fuelCriticalPulse 2s infinite;
}

.fuel-display.fuel-critical .fuel-fill {
    background: linear-gradient(90deg, 
        #ff4444 0%, 
        #ff6666 30%, 
        #ff8888 70%, 
        #ff4444 100%);
    box-shadow: 
        0 0 10px rgba(255, 68, 68, 0.7),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.fuel-display.fuel-critical .fuel-percent {
    color: #ff4444;
    text-shadow: 0 0 8px rgba(255, 68, 68, 0.6);
}

.fuel-display.fuel-critical .fuel-icon {
    color: #ff4444;
    filter: drop-shadow(0 0 6px rgba(255, 68, 68, 0.7));
}

.fuel-display .fuel-fill {
    background: linear-gradient(90deg, 
        #44ff44 0%, 
        #66ff66 30%, 
        #88ff88 70%, 
        #44ff44 100%);
    box-shadow: 
        0 0 8px rgba(68, 255, 68, 0.6),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.fuel-display.fuel-warning .fuel-fill {
    background: linear-gradient(90deg, 
        #ffaa00 0%, 
        #ffbb33 30%, 
        #ffcc44 70%, 
        #ffaa00 100%) !important;
    box-shadow: 
        0 0 8px rgba(255, 170, 0, 0.6),
        inset 0 1px 0 rgba(255, 255, 255, 0.3) !important;
}

.fuel-display.fuel-critical .fuel-fill {
    background: linear-gradient(90deg, 
        #ff4444 0%, 
        #ff6666 30%, 
        #ff8888 70%, 
        #ff4444 100%) !important;
    box-shadow: 
        0 0 10px rgba(255, 68, 68, 0.7),
        inset 0 1px 0 rgba(255, 255, 255, 0.3) !important;
}

.fuel-bar-container {
    flex: 1;
    min-width: 70px;
    position: relative;
}

.fuel-bar {
    width: 100%;
    height: 10px;
    background: rgba(30, 60, 90, 0.6);
    border-radius: 5px;
    overflow: hidden;
    border: 1px solid rgba(100, 150, 255, 0.2);
    position: relative;
}

.fuel-bar::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 30%;
    background: linear-gradient(90deg, 
        rgba(255, 255, 255, 0.1) 0%, 
        rgba(255, 255, 255, 0.3) 50%, 
        rgba(255, 255, 255, 0.1) 100%);
    border-radius: 5px 5px 0 0;
}

.fuel-bar-mini {
    width: 40px;
    height: 6px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 3px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.fuel-fill {
    height: 100%;
    background: linear-gradient(90deg, 
        #44ff44 0%, 
        #66ff66 30%, 
        #88ff88 70%, 
        #44ff44 100%);
    border-radius: 4px;
    transition: width 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94), 
                background 0.3s ease;
    box-shadow: 
        0 0 8px rgba(68, 255, 68, 0.6),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
    position: relative;
    z-index: 2;
}

.fuel-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 40%;
    background: linear-gradient(90deg, 
        rgba(255, 255, 255, 0.4) 0%, 
        rgba(255, 255, 255, 0.2) 50%, 
        rgba(255, 255, 255, 0.4) 100%);
    border-radius: 4px 4px 0 0;
}

.fuel-fill {
    transition: width 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94) !important;
}

.fuel-fill-mini {
    height: 100%;
    background: #44ff44;
    border-radius: 2px;
    transition: all 0.3s ease;
}

.fuel-icon {
    font-size: 1.3em;
    transition: all 0.3s ease;
    filter: drop-shadow(0 0 3px rgba(100, 200, 255, 0.5));
}

.fuel-percent {
    font-size: 0.95em;
    font-weight: bold;
    min-width: 40px;
    text-align: right;
    color: #ffffff;
    transition: all 0.3s ease;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.8);
    font-variant-numeric: tabular-nums;
}

.fuel-value {
    font-weight: bold;
    min-width: 35px;
    transition: color 0.3s ease;
}

.storage-category {
    margin-bottom: 30px;
}

.category-header {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
    padding: 10px 15px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 8px;
    border-left: 4px solid;
}

.category-resources { border-left-color: #00aaff; }

.category-equipment { border-left-color: #ffaa00; }

.category-icon {
    font-size: 1.5rem;
    margin-right: 10px;
}

.category-title {
    font-size: 1.2rem;
    font-weight: bold;
    color: white;
}

.category-count {
    margin-left: auto;
    background: rgba(255,255,255,0.1);
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 0.8rem;
}

.tile-storage {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 15px;
    padding: 20px;
    background: rgba(10, 20, 40, 0.8);
    border-radius: 15px;
    border: 2px solid #2a4a7a;
}

.storage-tile.resource-tile {
    background: linear-gradient(135deg, #2a3a5a, #1a2a4a);
    display: flex;
    align-items: center;
    padding: 15px;
    min-height: 80px;
}

.storage-tile {
    position: relative;
    cursor: pointer;
    transition: all 0.2s ease;
    border: 2px solid transparent;
}

.storage-tile:not(.item-locked):hover {
    border-color: #00ffff;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 255, 255, 0.3);
}

.storage-tile.item-locked {
    cursor: not-allowed;
    opacity: 0.7;
}

.resource-tile {
    background: linear-gradient(135deg, #2a3a5a, #1a2a4a);
    display: flex;
    align-items: center;
    padding: 15px;
    min-height: 80px;
}

.resource-tile:nth-child(1) .resource-icon {
    color: #888888; /* 鉄 - 灰色 */
    border-color: #666666;
    box-shadow: 
        0 0 15px rgba(136, 136, 136, 0.4),
        inset 0 0 10px rgba(136, 136, 136, 0.1);
}

.resource-tile:nth-child(2) .resource-icon {
    color: #C0C0C0; /* 銀 - 銀色 */
    border-color: #A0A0A0;
    box-shadow: 
        0 0 15px rgba(192, 192, 192, 0.5),
        inset 0 0 10px rgba(192, 192, 192, 0.1);
}

.resource-tile:nth-child(3) .resource-icon {
    color: #FFD700; /* 金 - 金色 */
    border-color: #CC9900;
    box-shadow: 
        0 0 20px rgba(255, 215, 0, 0.6),
        inset 0 0 10px rgba(255, 215, 0, 0.1);
}

.resource-icon {
    background: linear-gradient(135deg, #00ff88, #00cc66);
    border: 2px solid #ffd700;
    box-shadow: 0 0 15px rgba(0, 255, 136, 0.7);
}

.resource-icon {
    font-size: 2rem !important; /* 所有アイテムと同じサイズに */
    margin-right: 15px;
    filter: drop-shadow(0 0 10px currentColor);
    flex-shrink: 0;
    width: 40px; /* サイズを固定 */
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.1);
}

.resource-icon {
    position: relative;
    border: 2px solid rgba(255, 255, 255, 0.3);
    box-shadow: 
        0 0 15px rgba(0, 255, 255, 0.3),
        inset 0 0 10px rgba(255, 255, 255, 0.1);
}

.resource-info {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    flex-grow: 1;
}

.resource-amount {
    font-size: 1.2rem; /* 少し小さくしてバランス調整 */
    font-weight: bold;
    color: white;
    text-shadow: 0 0 10px rgba(255,255,255,0.5);
    line-height: 1.2;
    margin-bottom: 4px;
}

.resource-name {
    font-size: 1.1rem;
    opacity: 0.9;
    color: #e0e0e0;
    text-align: left;
    line-height: 1.3;
}

.security-panel {
    background: rgba(20, 30, 50, 0.9);
    border: 2px solid #ff6b6b;
    border-radius: 10px;
    padding: 20px;
    margin-top: 20px;
}

.security-title {
    color: #ff6b6b;
    font-size: 1.2rem;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.security-options {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.security-option {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    background: rgba(255, 107, 107, 0.1);
    border-radius: 6px;
    transition: background 0.3s ease;
}

.security-option:hover {
    background: rgba(255, 107, 107, 0.2);
}

.security-option input[type="checkbox"] {
    width: 18px;
    height: 18px;
}

.batch-actions {
    display: flex;
    gap: 10px;
    margin-top: 15px;
}

.batch-btn {
    padding: 8px 16px;
    border: 1px solid #ff6b6b;
    background: rgba(255, 107, 107, 0.2);
    color: white;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.batch-btn:hover {
    background: rgba(255, 107, 107, 0.4);
    transform: translateY(-2px);
}

.shop-item-card {
    /* コンパクトカード：インラインスタイルで制御 */
    border-radius: 14px;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.shop-item-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0,200,255,0.25) !important;
}

.shop-buy-btn {
    width: 100%;
    padding: 8px 12px;
    border: none;
    border-radius: 6px;
    background: linear-gradient(135deg, #00aaff, #0088ff);
    color: white;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.85rem;
    min-height: 36px;
    flex-shrink: 0;
}

.shop-buy-btn:hover:not(.disabled) {
    background: linear-gradient(135deg, #00ffff, #00aaff);
    transform: translateY(-1px);
}

.shop-buy-btn.disabled {
    background: #666666;
    cursor: not-allowed;
    opacity: 0.6;
}

.shop-buy-btn.maxed {
    background: #ff4444;
    cursor: not-allowed;
}

.shop-buy-btn.owned {
    background: linear-gradient(135deg, #00ff88, #00cc66);
}

.shop-categories {
    display: flex;
    gap: 8px;
    justify-content: center;
    margin: 15px 0;
    flex-wrap: wrap;
}

.category-btn {
    padding: 6px 12px;
    border: 1px solid #00ffff;
    background: rgba(0,255,255,0.1);
    color: white;
    border-radius: 15px;
    cursor: pointer;
    font-size: 0.9rem;
    white-space: nowrap;
    transition: all 0.3s ease;
    min-width: 50px;
    text-align: center;
}

.category-btn.active {
    background: #00ffff;
    color: black;
    font-weight: bold;
}

.shop-balance {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin: 20px 0;
}

.balance-item {
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(255,255,255,0.1);
    padding: 10px 15px;
    border-radius: 10px;
}

.shop-items-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
    margin: 8px 0;
    width: 100%;
    box-sizing: border-box;
}

/* ショップコンパクトカード */
.shop-card-icon {
    font-size: 2rem;
    filter: drop-shadow(0 0 6px rgba(0,180,255,0.4));
    line-height: 1;
    margin-bottom: 2px;
}
.shop-card-name {
    font-size: 0.82rem;
    font-weight: 700;
    color: #ddeeff;
    text-align: center;
    line-height: 1.2;
}
.shop-card-rarity {
    font-size: 0.68rem;
    font-weight: 600;
    letter-spacing: 0.04em;
}
.shop-card-desc {
    font-size: 0.7rem;
    color: #6688aa;
    text-align: center;
    line-height: 1.3;
    flex: 1;
}
.shop-card-price {
    display: flex;
    gap: 4px;
    justify-content: center;
    flex-wrap: wrap;
    margin: 2px 0;
}
.shop-card-owned {
    font-size: 0.7rem;
    color: #00cc88;
    background: rgba(0,200,120,0.1);
    border: 1px solid rgba(0,200,120,0.25);
    border-radius: 5px;
    padding: 1px 6px;
}

.scroll-hint {
    position: sticky;
    bottom: 10px;
    left: 50%;
    transform: translateX(-50%);
    color: rgba(0, 255, 255, 0.7);
    font-size: 0.8rem;
    animation: fadeInOut 2s infinite;
    text-align: center;
    background: rgba(0, 0, 0, 0.5);
    padding: 5px 10px;
    border-radius: 15px;
    width: fit-content;
    margin: 0 auto;
}

/* JSが書き込むachievements-grid: 縦1列レイアウト */
.achievements-grid {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.achievement-level {
    background: rgba(0, 255, 255, 0.2);
    color: #00ffff;
    padding: 4px 8px;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: bold;
    white-space: nowrap;
}

.achievement-notification-content {
    display: flex;
    align-items: center;
    gap: 15px;
}

.achievement-notification-icon {
    font-size: 2rem;
    filter: drop-shadow(0 0 10px rgba(255, 215, 0, 0.8));
}

.achievement-notification-text {
    flex: 1;
}

.achievement-notification-title {
    font-weight: bold;
    margin-bottom: 5px;
    color: #FFD700;
}

.achievement-notification-name {
    font-size: 1.1rem;
    margin-bottom: 3px;
}

.achievement-notification-desc {
    font-size: 0.9rem;
    opacity: 0.9;
}

.achievement-progress {
    margin-top: auto;
}

.stats-section {
    margin-bottom: 25px;
    padding: 20px;
    background: rgba(0, 40, 80, 0.5);
    border-radius: 10px;
    border-left: 4px solid #00ffff;
}

.stats-section h3 {
    color: #00ffff;
    margin-bottom: 15px;
    font-size: 1.3rem;
    text-shadow: 0 0 10px #00ffff;
}

.stats-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 15px;
}

.stat-item {
    display: flex;
    justify-content: space-between;
    font-size: 0.7em;
}

.stat-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 8px;
    border: 1px solid rgba(0, 255, 255, 0.2);
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 5px;
}

.stat-label {
    color: #cccccc;
}

.stat-label {
    color: #88ddff;
    font-size: 1rem;
}

.stat-label {
    color: #88ddff;
    font-size: 0.9rem;
}

.stat-value {
    color: #ffffff;
    font-weight: bold;
}

.stat-value {
    color: #ffffff;
    font-weight: bold;
    font-size: 1.1rem;
}

.stat-value {
    color: #00ffff;
    font-size: 1.2rem;
    font-weight: bold;
}

.stat-highlight {
    color: #ffff00;
    font-size: 1.2rem;
    text-shadow: 0 0 10px #ffff00;
}

.score-item {
    margin: 1px 0;
    padding: 1px 0;
    /* border-bottom: 1px solid rgba(0, 255, 255, 0.3);*/
}

.score-item:last-child {
    /* border-bottom: 2px solid #00ffff;*/
    padding-bottom: 1px;
    margin-bottom: 1px;
}

.stars {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(2px 2px at 20px 30px, #eee, transparent),
        radial-gradient(2px 2px at 40px 70px, #fff, transparent),
        radial-gradient(1px 1px at 90px 40px, #fff, transparent),
        radial-gradient(1px 1px at 130px 80px, #fff, transparent),
        radial-gradient(2px 2px at 160px 30px, #eee, transparent);
    background-repeat: repeat;
    background-size: 200px 100px;
    animation: starsMove 50s linear infinite;
}

.meteors {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.meteors::after {
    content: '';
    position: absolute;
    width: 2px;
    height: 50px;
    background: linear-gradient(to bottom, transparent, #fff, transparent);
    animation: meteorFall 8s linear infinite;
}

.meteors::before {
    left: 25%;
    animation-delay: 0s;
}

.meteors::after {
    left: 75%;
    animation-delay: 4s;
}



.title-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1001; /* 背景はボタンの背後に */
    pointer-events: none; /* 背景がクリックを邪魔しないように */
}

.screen-shake {
    animation: screenShake 0.5s ease-in-out;
}

.wormhole-effect {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(138,43,226,0.7) 0%, rgba(0,0,0,0) 70%);
    z-index: 5;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.5s;
}

.wormhole-effect {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(138, 43, 226, 0.7) 0%, rgba(0, 0, 0, 0) 70%);
    z-index: 5;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.5s;
}

.wormhole-effect.enhanced {
    background: radial-gradient(circle at 30% 30%, rgba(218, 112, 214, 0.8) 0%, transparent 50%),
        radial-gradient(circle at 70% 70%, rgba(138, 43, 226, 0.9) 0%, transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(75, 0, 130, 0.7) 0%, transparent 70%);
    opacity: 0;
}

.shield-effect {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(0, 255, 255, 0.5) 0%, rgba(0, 0, 0, 0) 70%);
    z-index: 5;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s;
}

@keyframes fuelBlink {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes fuelConsumptionFlash {
    0% {
        background-color: rgba(255, 200, 100, 0.3);
    }
}

.mining-combo {
    pointer-events: none;
    font-family: 'Arial', sans-serif;
}

/* ============================================================
 * アクセシビリティ・モーション設定
 * ============================================================ */
@media (prefers-reduced-motion: reduce) {
    .ore-icon-blink,
    .ore-pulse,
    .ore-blink-common,
    .ore-blink-rare,
    .ore-blink-epic {
        animation: none;
        transform: none;
    }
    
    .ore-icon-blink {
        color: #FFD700 !important;
    }
}

@media (prefers-contrast: high) {
    .shield-icon {
        border: 3px solid #00ffff;
        background: #0066cc;
    }

    .wormhole-icon {
        border: 3px solid #da70d6;
        background: #8a2be2;
    }

    .item-spawn-warning {
        border: 4px dashed #ffff00;
    }
}

@media (prefers-reduced-motion: reduce) {
    .shield-active,
    .wormhole-active,
    .item-collect-text,
    .cooldown-active,
    .item-spawn-warning {
        animation: none;
    }

    .shield-effect,
    .wormhole-effect {
        transition: none;
    }
}

@media (min-resolution: 192dpi) {
    .fuel-display {
        border-width: 1.5px;
    }
    
    .fuel-bar {
        border-width: 0.5px;
    }
}

@media (prefers-color-scheme: dark) {
    .fuel-display {
        background: rgba(0, 5, 10, 0.9);
    }
    
    .fuel-display.fuel-warning {
        background: rgba(30, 20, 0, 0.9);
    }
    
    .fuel-display.fuel-critical {
        background: rgba(30, 0, 0, 0.9);
    }
}

@media (prefers-contrast: high) {
    .fuel-display {
        border-color: #ffffff;
        background: #000000;
    }
    
    .fuel-display.fuel-warning {
        border-color: #ffff00;
        background: #333300;
    }
    
    .fuel-display.fuel-critical {
        border-color: #ff0000;
        background: #330000;
    }
}

@media (prefers-reduced-motion: reduce) {
    .fuel-display,
    .fuel-fill,
    .fuel-icon,
    .fuel-percent {
        transition: none;
        animation: none;
    }
    
    .fuel-blink {
        animation: none;
        opacity: 1;
    }
    
    .fuel-display.fuel-critical {
        animation: none;
        border-color: #ff0000;
    }
}

/* ============================================================
 * アニメーション
 * ============================================================ */
@keyframes floatUp {
    0% {
        transform: translateY(0) scale(1);
        opacity: 1;
    }
    70% {
        opacity: 1;
    }
    100% {
        transform: translateY(-60px) scale(1.2);
        opacity: 0;
    }
}

@keyframes floatUpGlow {
    0% {
        transform: translateY(0) scale(1);
        opacity: 1;
        text-shadow: 0 0 10px rgba(255, 215, 0, 0.7);
    }
    50% {
        transform: translateY(-30px) scale(1.3);
        text-shadow: 0 0 20px rgba(255, 215, 0, 1);
    }
    100% {
        transform: translateY(-60px) scale(1.1);
        opacity: 0;
        text-shadow: 0 0 10px rgba(255, 215, 0, 0.5);
    }
}

@keyframes comboPop {
    0% {
        transform: translateX(-50%) scale(0.5);
        opacity: 0;
    }
    50% {
        transform: translateX(-50%) scale(1.2);
        opacity: 1;
    }
    100% {
        transform: translateX(-50%) scale(1);
        opacity: 0;
    }
}

@keyframes rareFlash {
    0% {
        opacity: 0;
        transform: scale(0.5);
    }
    50% {
        opacity: 0.2;
        transform: scale(1);
    }
    100% {
        opacity: 0;
        transform: scale(1.2);
    }
}

@keyframes epicFlash {
    0% {
        opacity: 0;
        transform: scale(0.5);
    }
    25% {
        opacity: 0.4;
        transform: scale(1);
    }
    50% {
        opacity: 0.2;
        transform: scale(1.1);
    }
    75% {
        opacity: 0.1;
        transform: scale(1.2);
    }
    100% {
        opacity: 0;
        transform: scale(1.3);
    }
}

@keyframes epicShake {
    0%, 100% {
        transform: translateX(0) translateY(0);
    }
    10%, 30%, 50%, 70%, 90% {
        transform: translateX(-5px) translateY(-3px);
    }
    20%, 40%, 60%, 80% {
        transform: translateX(5px) translateY(3px);
    }
}

@keyframes oreBlink {
    0% {
        transform: scale(1);
        color: inherit;
        text-shadow: 0 0 0px currentColor;
    }
    25% {
        transform: scale(1.2);
        color: #FFD700;
        text-shadow: 0 0 10px #FFD700;
    }
    50% {
        transform: scale(1.3);
        color: #FFFFFF;
        text-shadow: 0 0 15px #FFFFFF, 0 0 20px #FFD700;
    }
    75% {
        transform: scale(1.2);
        color: #FFD700;
        text-shadow: 0 0 10px #FFD700;
    }
    100% {
        transform: scale(1);
        color: inherit;
        text-shadow: 0 0 0px currentColor;
    }
}

@keyframes orePulse {
    0% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.7;
        transform: scale(0.95);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes orePulseCommon {
    0%, 100% {
        color: #888888;
        text-shadow: 0 0 5px #888888;
    }
    50% {
        color: #AAAAAA;
        text-shadow: 0 0 10px #AAAAAA;
    }
}

@keyframes orePulseRare {
    0%, 100% {
        color: #C0C0C0;
        text-shadow: 0 0 5px #C0C0C0;
    }
    50% {
        color: #E8E8E8;
        text-shadow: 0 0 15px #E8E8E8;
    }
}

@keyframes orePulseEpic {
    0%, 100% {
        color: #FFD700;
        text-shadow: 0 0 5px #FFD700;
    }
    50% {
        color: #FFFF80;
        text-shadow: 0 0 20px #FFFF80, 0 0 30px #FFD700;
    }
}

@keyframes titleGlow {
    from {
        text-shadow: 0 0 20px #00ffff, 0 0 30px #00ffff;
    }
    to {
        text-shadow: 0 0 30px #00ffff, 0 0 40px #00ffff, 0 0 50px #0088ff;
    }
}

@keyframes starsMove {
    from { background-position: 0 0; }
    to { background-position: 0 1000px; }
}

@keyframes meteorFall {
    0% {
        top: -50px;
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        top: 100%;
        opacity: 0;
    }
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

@keyframes shieldBarrier {
    0% {
        transform: scale(1);
        opacity: 0.8;
        border-color: #00ffff;
        box-shadow:
            0 0 20px #00ffff,
            0 0 40px #00ffff,
            inset 0 0 20px rgba(0, 255, 255, 0.3);
    }
    100% {
        transform: scale(1.2);
        opacity: 1;
        border-color: #00ccff;
        box-shadow:
            0 0 30px #00ccff,
            0 0 60px #00ccff,
            inset 0 0 30px rgba(0, 204, 255, 0.5);
    }
}

@keyframes shieldPulse {
    0% {
        opacity: 0.3;
        background: radial-gradient(circle, rgba(0, 255, 255, 0.3) 0%, rgba(0, 0, 0, 0) 70%);
    }
    50% {
        opacity: 0.7;
        background: radial-gradient(circle, rgba(0, 255, 255, 0.7) 0%, rgba(0, 0, 0, 0) 70%);
    }
    100% {
        opacity: 0.3;
        background: radial-gradient(circle, rgba(0, 255, 255, 0.3) 0%, rgba(0, 0, 0, 0) 70%);
    }
}

@keyframes shieldExtensionPop {
    0% {
        transform: translate(-50%, -50%) scale(0.5);
        opacity: 0;
    }
    50% {
        transform: translate(-50%, -100%) scale(1.2);
        opacity: 1;
    }
    100% {
        transform: translate(-50%, -150%) scale(0.8);
        opacity: 0;
    }
}

@keyframes wormholeSpin {
    0% {
        transform: rotate(0deg);
        background: radial-gradient(circle, rgba(138, 43, 226, 0.7) 0%, rgba(0, 0, 0, 0) 70%);
    }
    50% {
        background: radial-gradient(circle, rgba(148, 0, 211, 0.8) 0%, rgba(0, 0, 0, 0) 70%);
    }
    100% {
        transform: rotate(360deg);
        background: radial-gradient(circle, rgba(138, 43, 226, 0.7) 0%, rgba(0, 0, 0, 0) 70%);
    }
}

@keyframes screenShake {
    0%,
    100% {
        transform: translateX(0) translateY(0);
    }
    10%,
    30%,
    50%,
    70%,
    90% {
        transform: translateX(-5px) translateY(-3px);
    }
    20%,
    40%,
    60%,
    80% {
        transform: translateX(5px) translateY(3px);
    }
}

@keyframes wormholePulse {
    0% {
        transform: scale(1) rotate(0deg);
    }
    100% {
        transform: scale(1.1) rotate(180deg);
    }
}

@keyframes colorShift {
    0% {
        filter: hue-rotate(0deg);
        background: radial-gradient(circle at 30% 30%, rgba(218, 112, 214, 0.8) 0%, transparent 50%),
            radial-gradient(circle at 70% 70%, rgba(138, 43, 226, 0.9) 0%, transparent 50%);
    }
    100% {
        filter: hue-rotate(60deg);
        background: radial-gradient(circle at 30% 30%, rgba(255, 105, 180, 0.8) 0%, transparent 50%),
            radial-gradient(circle at 70% 70%, rgba(147, 112, 219, 0.9) 0%, transparent 50%);
    }
}

@keyframes speedLine {
    0% {
        transform: translateY(-100px) rotate(15deg);
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        transform: translateY(100vh) rotate(15deg);
        opacity: 0;
    }
}

@keyframes floatUp {
    0% {
        opacity: 1;
        transform: translateY(0);
    }
    100% {
        opacity: 0;
        transform: translateY(-50px);
    }
}

@keyframes cooldownPulse {
    0%,
    100% {
        border-color: #00ffff;
    }
    50% {
        border-color: #ff4444;
    }
}

@keyframes spawnWarning {
    0%,
    100% {
        opacity: 0.5;
        transform: scale(1);
    }
    50% {
        opacity: 1;
        transform: scale(1.2);
    }
}

@keyframes shieldShake {
    0%,
    100% {
        transform: translateX(0) translateY(0);
    }
    25% {
        transform: translateX(-3px) translateY(-2px);
    }
    50% {
        transform: translateX(3px) translateY(2px);
    }
    75% {
        transform: translateX(-2px) translateY(-1px);
    }
}

@keyframes shieldHit {
    0% {
        background: radial-gradient(circle, rgba(0, 255, 255, 0.9) 0%, rgba(0, 0, 0, 0) 70%);
        opacity: 1;
    }
    100% {
        background: radial-gradient(circle, rgba(0, 255, 255, 0.7) 0%, rgba(0, 0, 0, 0) 70%);
        opacity: 0.7;
    }
}

@keyframes shieldHitPulse {
    0% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.8;
        transform: scale(1.1);
    }
    100% {
        opacity: 0;
        transform: scale(1.2);
    }
}

@keyframes resourceFloat {
    0% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
    50% {
        transform: translateY(-25px) scale(1.2);
    }
    100% {
        opacity: 0;
        transform: translateY(-50px) scale(1);
    }
}

@keyframes fuelBlink {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    25% {
        opacity: 0.7;
        transform: scale(1.1);
    }
    50% {
        opacity: 0.4;
        transform: scale(0.9);
    }
    75% {
        opacity: 0.7;
        transform: scale(1.05);
    }
}

@keyframes fuelCriticalPulse {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(255, 68, 68, 0.4);
    }
    50% {
        box-shadow: 0 0 0 4px rgba(255, 68, 68, 0.2);
    }
}

@keyframes fuelConsumptionFlash {
    0% {
        background-color: rgba(255, 200, 100, 0.3);
    }
    100% {
        background-color: transparent;
    }
}

@keyframes fuelDepletionPulse {
    0% {
        background-color: rgba(255, 50, 50, 0.6);
        transform: scale(1);
    }
    50% {
        background-color: rgba(255, 0, 0, 0.8);
        transform: scale(1.05);
    }
    100% {
        background-color: transparent;
        transform: scale(1);
    }
}

@keyframes fuelGainPulse {
    0% {
        background-color: rgba(100, 255, 100, 0.3);
        transform: scale(1);
    }
    50% {
        background-color: rgba(100, 255, 100, 0.6);
        transform: scale(1.02);
    }
    100% {
        background-color: transparent;
        transform: scale(1);
    }
}

@keyframes fadeInOut {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}

@keyframes resourceIncrease {
    0% { 
        transform: scale(1);
        color: white;
    }
    50% { 
        transform: scale(1.3);
        color: #00ff88;
        text-shadow: 0 0 20px #00ff88;
    }
    100% { 
        transform: scale(1);
        color: white;
    }
}

@keyframes floatUp {
    0% {
        transform: translateY(0);
        opacity: 1;
    }
    100% {
        transform: translateY(-50px);
        opacity: 0;
    }
}

@keyframes oreBlink {
        0% {
            transform: scale(1);
            color: inherit;
        }
        50% {
            transform: scale(1.15);
            color: #FFD700;
        }
        100% {
            transform: scale(1);
            color: inherit;
        }
    }

@keyframes fuelBlinkMobile {
        0%, 100% { opacity: 1; }
        50% { opacity: 0.5; }
    }

/* stats-content: JSがinnerHTMLで書き換えるためscreen-contentと同等のスクロールを付与 */
.stats-content {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: contain;
    padding: 4px 2px 8px;
    margin-bottom: 10px;
}
.stats-content::-webkit-scrollbar { width: 4px; }
.stats-content::-webkit-scrollbar-thumb { background: #00ffff; border-radius: 2px; }

/* ========== ゲーム統計画面 コンパクトレイアウト ========== */
.stats-compact-section {
    background: rgba(0, 20, 50, 0.5);
    border-radius: 10px;
    border: 1px solid rgba(0, 255, 255, 0.15);
    padding: 10px 12px;
    margin-bottom: 10px;
}

.stats-section-title {
    font-size: 0.8rem;
    color: #88ddff;
    font-weight: bold;
    margin-bottom: 8px;
    letter-spacing: 0.05em;
}

/* 2列グリッド */
.stats-compact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6px 10px;
}

.stat-compact-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 5px 8px;
    background: rgba(0, 10, 30, 0.5);
    border-radius: 6px;
    gap: 4px;
    min-width: 0;
}

.stat-compact-label {
    font-size: 0.75rem;
    color: #88aacc;
    white-space: nowrap;
    flex-shrink: 0;
}

.stat-compact-value {
    font-size: 0.85rem;
    font-weight: bold;
    color: #ffffff;
    text-align: right;
    white-space: nowrap;
}

.stat-compact-value.highlight {
    color: #00ffcc;
    font-size: 1rem;
}

/* ========== ゲーム開始前準備モーダル ========== */
.pre-game-modal {
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: rgba(0, 0, 0, 0.75);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
}
.pre-game-content {
    background: rgba(0, 20, 50, 0.97);
    border: 2px solid #00ffff;
    border-radius: 16px;
    padding: 24px 20px;
    width: 100%;
    max-width: 420px;
    max-height: 90dvh;
    overflow-y: auto;
    box-shadow: 0 0 40px rgba(0, 255, 255, 0.3);
}
.pre-game-content h2 {
    text-align: center;
    font-size: clamp(1.1rem, 4vw, 1.5rem);
    color: #00ffff;
    margin-bottom: 16px;
}
.pre-game-actions {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 16px;
}
.btn {
    padding: 12px 20px;
    font-size: 0.95rem;
    font-weight: bold;
    border-radius: 50px;
    border: none;
    cursor: pointer;
    transition: transform 0.15s;
    -webkit-tap-highlight-color: transparent;
}
.btn-primary   { background: linear-gradient(135deg, rgba(0,200,100,0.9), rgba(0,150,70,0.9)); color: white; border: 2px solid #00ff88; }
.btn-secondary { background: linear-gradient(135deg, rgba(0,150,219,0.85), rgba(0,100,176,0.85)); color: white; border: 2px solid #00aaff; }
.btn-outline   { background: transparent; color: #aaa; border: 1px solid rgba(255,255,255,0.2); }
.btn:hover, .btn:active { transform: translateY(-2px); }
.effects-group { margin-bottom: 12px; }
.effects-group h3 { font-size: 0.85rem; color: #88ddff; margin-bottom: 8px; }
.effect-item { display: flex; align-items: center; gap: 10px; padding: 8px 10px; background: rgba(0,10,30,0.6); border-radius: 8px; margin-bottom: 6px; }
.effect-icon { font-size: 1.4rem; flex-shrink: 0; }
.effect-name { font-size: 0.88rem; font-weight: bold; color: white; }
.effect-description { font-size: 0.78rem; color: #aaa; }
.effect-auto { font-size: 0.72rem; color: #00ff88; margin-left: auto; white-space: nowrap; }
.effect-toggle { font-size: 0.78rem; color: #aaa; margin-left: auto; display: flex; align-items: center; gap: 4px; }

/* ===== 格納庫タブ（ショップと共通スタイル使用） ===== */
.storage-tab-nav {
    margin-top: 4px;
    margin-bottom: 12px;
}
/* .category-btn のスタイルをそのまま継承 */
.storage-tab-content {
    width: 100%;
    box-sizing: border-box;
}

/* ===== 装備タブ ===== */
.equip-slot-section { margin-bottom: 16px; }
.equip-slot-label, .equip-list-label {
    font-size: 0.78rem;
    color: #6688aa;
    margin-bottom: 8px;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

/* ─── 装備スロット ─── */
.equip-slot {
    position: relative;
    border: 1.5px solid rgba(0,255,200,0.35);
    border-radius: 14px;
    padding: 12px 14px;
    min-height: 70px;
    background: linear-gradient(120deg, rgba(0,25,45,0.95), rgba(0,45,38,0.8));
    box-shadow: 0 0 20px rgba(0,255,180,0.1), inset 0 1px 0 rgba(255,255,255,0.05);
    overflow: hidden;
}
.equip-slot::before {
    content: "";
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, rgba(0,255,200,0.6), transparent);
}
.equip-slot-empty {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    color: #334455;
}
.equip-slot-empty-icon { font-size: 1.4rem; opacity: 0.35; }
.equip-slot-empty-text { font-size: 0.82rem; letter-spacing: 0.1em; }

.equip-slot-filled {
    display: flex;
    align-items: center;
    gap: 12px;
    position: relative;
    z-index: 1;
}
.equip-slot-glow {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 15% 50%, rgba(0,255,180,0.1) 0%, transparent 65%);
    pointer-events: none;
}
.equip-slot-icon {
    font-size: 2.4rem;
    filter: drop-shadow(0 0 10px rgba(0,255,200,0.7));
    flex-shrink: 0;
}
.equip-slot-info { flex: 1; min-width: 0; }
.equip-slot-name {
    font-weight: 700;
    color: #00ffcc;
    font-size: 1rem;
    text-shadow: 0 0 10px rgba(0,255,180,0.5);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.equip-slot-desc {
    font-size: 0.78rem;
    color: #66aa88;
    margin-top: 3px;
}
.equip-remove-btn {
    flex-shrink: 0;
    padding: 10px 18px;
    background: rgba(220,50,50,0.15);
    border: 1px solid rgba(220,80,80,0.5);
    border-radius: 10px;
    color: #ff9090;
    font-size: 0.88rem;
    cursor: pointer;
    transition: all 0.2s;
    letter-spacing: 0.04em;
    min-height: 40px;
}
.equip-remove-btn:hover { background: rgba(220,50,50,0.35); color: #fff; }

/* ─── 所持装備リスト（縦1列・横長カード） ─── */
.equip-cards-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
    width: 100%;
    box-sizing: border-box;
    padding: 2px;
}

.equip-item-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    padding: 16px 12px 14px;
    border: 1.5px solid rgba(60,120,180,0.35);
    border-radius: 14px;
    background: linear-gradient(170deg, rgba(5,18,38,0.95) 0%, rgba(8,25,55,0.85) 100%);
    box-shadow: 0 2px 10px rgba(0,0,0,0.5);
    position: relative;
    overflow: hidden;
    transition: border-color 0.2s, box-shadow 0.2s;
    text-align: center;
}
.equip-item-card::before {
    content: "";
    position: absolute;
    left: 0; top: 0; bottom: 0;
    width: 3px;
    background: rgba(0,180,219,0.5);
    border-radius: 14px 0 0 14px;
}
.equip-item-card.equip-active {
    border-color: rgba(0,255,180,0.6);
    box-shadow: 0 0 18px rgba(0,255,180,0.15), 0 2px 10px rgba(0,0,0,0.5);
}
.equip-item-card.equip-active::before {
    background: linear-gradient(180deg, #00ffcc, #00cc88);
    width: 4px;
}

/* アイコン列（左） */
.equip-card-icon {
    font-size: 2.2rem;
    filter: drop-shadow(0 0 6px rgba(0,180,255,0.5));
    line-height: 1;
    margin-bottom: 2px;
}
.equip-item-card.equip-active .equip-card-icon {
    filter: drop-shadow(0 0 10px rgba(0,255,180,0.8));
}

/* 情報列（中央上段） */
.equip-card-name {
    font-size: 0.82rem;
    font-weight: 700;
    color: #ddeeff;
    line-height: 1.2;
    text-align: center;
}
.equip-item-card.equip-active .equip-card-name { color: #00ffcc; }

/* 情報列（中央下段: level + desc） */
.equip-card-sub {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
}
.equip-card-level {
    font-size: 0.72rem;
    font-weight: 700;
    color: #FFD700;
    background: rgba(255,215,0,0.12);
    border: 1px solid rgba(255,215,0,0.25);
    border-radius: 5px;
    padding: 1px 6px;
    white-space: nowrap;
}
.equip-card-level.unowned {
    color: #667788;
    background: rgba(100,120,140,0.15);
    border-color: rgba(100,120,140,0.25);
}
.equip-card-desc {
    font-size: 0.74rem;
    color: #6688aa;
    line-height: 1.2;
}
.equip-active .equip-card-desc { color: #66ccaa; }

/* ボタン列（右） */
.equip-card-btns {
    display: flex;
    flex-direction: column;
    gap: 4px;
    align-items: center;
    justify-content: center;
    width: 100%;
    margin-top: 4px;
}
.equip-card-price {
    font-size: 0.78rem;
    color: #88aacc;
    text-align: right;
}
.equip-btn {
    padding: 12px 10px;
    border-radius: 10px;
    font-size: 0.92rem;
    cursor: pointer;
    border: 1px solid;
    text-align: center;
    transition: all 0.15s;
    font-weight: 600;
    letter-spacing: 0.02em;
    width: 100%;
    min-height: 44px;
    touch-action: manipulation;
}
.equip-btn-equip   { background: rgba(0,180,120,0.2); border-color: #00bb88; color: #00ffaa; }
.equip-btn-equip:hover { background: rgba(0,180,120,0.4); }
.equip-btn-remove  { background: rgba(200,50,50,0.15); border-color: #cc4444; color: #ff9090; }
.equip-btn-remove:hover { background: rgba(200,50,50,0.35); }
.equip-btn-upgrade { background: rgba(220,150,0,0.15); border-color: #ddaa00; color: #ffcc44; }
.equip-btn-upgrade:hover { background: rgba(220,150,0,0.3); }
.equip-btn-buy     { background: rgba(0,160,200,0.18); border-color: #0099cc; color: #66ddff; }
.equip-btn-buy:hover { background: rgba(0,160,200,0.38); }
.equip-btn.disabled { opacity: 0.3; cursor: not-allowed; pointer-events: none; }

.equip-card-unowned {
    font-size: 0.7rem;
    color: #556677;
    letter-spacing: 0.06em;
}
.equip-card-price-row {
    display: flex;
    gap: 4px;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
}
.equip-price-item {
    font-size: 0.78rem;
    color: #aaccee;
}

.equip-equipped-badge {
    font-size: 0.68rem;
    color: #00ffcc;
    background: rgba(0,255,180,0.1);
    border: 1px solid rgba(0,255,180,0.3);
    border-radius: 5px;
    padding: 2px 6px;
    letter-spacing: 0.04em;
}

.equip-max-badge {
    font-size: 0.7rem;
    color: #FFD700;
    background: rgba(255,215,0,0.1);
    border: 1px solid rgba(255,215,0,0.3);
    border-radius: 6px;
    padding: 3px 8px;
    letter-spacing: 0.05em;
}

/* ── 機体タブ ── */
.ship-cards-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    width: 100%;
    box-sizing: border-box;
    margin: 8px 0;
}


/* ── 統計画面フッターボタン中央寄せ ── */
#statsScreen .game-over-controls {
    display: flex !important;
    flex-direction: row !important;
    flex-wrap: wrap !important;
    gap: 10px !important;
    justify-content: center !important;
    align-items: center !important;
    align-self: stretch !important;   /* flex子要素として横幅いっぱいに */
    width: 100% !important;
    box-sizing: border-box !important;
    padding: 12px 16px max(12px, env(safe-area-inset-bottom)) !important;
    flex-shrink: 0 !important;
    margin-left: 0 !important;
    margin-right: 0 !important;
}
/* ボタンの flex:1 を打ち消して自然幅に */
#statsScreen .game-over-controls .menu-btn,
#statsScreen .game-over-controls button {
    flex: 0 0 auto !important;
    width: auto !important;
    min-width: 130px;
    max-width: 200px;
}