/* プレイヤー強化画面のスタイル */

#upgradeScreen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    overflow: hidden;
}

.upgrade-container {
    width: 90%;
    max-width: 1200px;
    height: 90vh;
    display: flex;
    flex-direction: column;
    padding: 20px;
}

/* ヘッダー部 */
.upgrade-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    backdrop-filter: blur(10px);
    flex-shrink: 0;
    margin-bottom: 20px;
}

/* フッター部 */
.upgrade-footer {
    display: flex;
    justify-content: center;
    padding: 20px;
    flex-shrink: 0;
    margin-top: 20px;
}

.upgrade-header h1 {
    color: #fff;
    font-size: 2em;
    margin: 0;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.crystal-display {
    display: flex;
    align-items: center;
    font-size: 1.5em;
    color: #fff;
    background: rgba(255, 255, 255, 0.1);
    padding: 10px 20px;
    border-radius: 20px;
}

.crystal-icon {
    margin-right: 10px;
    font-size: 1.2em;
}

.back-button {
    padding: 10px 30px;
    font-size: 1.1em;
    background: #4a5568;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.3s;
}

.back-button:hover {
    background: #2d3748;
    transform: scale(1.05);
}

/* ステータスグリッド - レスポンシブ対応 */
.upgrade-stats-grid {
    display: grid;
    gap: 20px;
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 10px;
    border-radius: 10px;
    -webkit-overflow-scrolling: touch;
    scroll-behavior: smooth;
}

/* スクロールバーのスタイリング */
.upgrade-stats-grid::-webkit-scrollbar {
    width: 8px;
}

.upgrade-stats-grid::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
}

.upgrade-stats-grid::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.3);
    border-radius: 4px;
}

.upgrade-stats-grid::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.5);
}

/* PC: 横並び5列 */
@media (min-width: 1024px) {
    .upgrade-stats-grid {
        grid-template-columns: repeat(5, 1fr);
    }
}

/* タブレット: 3列 */
@media (min-width: 768px) and (max-width: 1023px) {
    .upgrade-stats-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .upgrade-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }
    
    .upgrade-header h1 {
        font-size: 1.7em;
        text-align: left;
        width: 100%;
    }
    
    .crystal-display {
        align-self: flex-end;
        font-size: 1.3em;
    }
}

/* モバイル: 縦並び */
@media (max-width: 767px) {
    .upgrade-container {
        height: 95vh;
        width: 95%;
    }
    
    .upgrade-stats-grid {
        grid-template-columns: 1fr;
    }
    
    .upgrade-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
        padding: 15px;
    }
    
    .upgrade-header h1 {
        font-size: 1.5em;
        text-align: left;
        width: 100%;
    }
    
    .crystal-display {
        align-self: flex-end;
    }
    
    .upgrade-footer {
        padding: 15px;
    }
}

/* ステータスカード */
.stat-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    padding: 20px;
    text-align: center;
    transition: all 0.3s;
    border: 2px solid rgba(255, 255, 255, 0.2);
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.stat-card h3 {
    color: #fff;
    font-size: 1.3em;
    margin: 0 0 10px 0;
}

.stat-description {
    color: #b0b0b0;
    font-size: 0.9em;
    margin: 10px 0;
}

.stat-info {
    display: flex;
    justify-content: space-between;
    margin: 15px 0;
    padding: 10px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 8px;
}

.current-value, .current-level {
    color: #fff;
    font-size: 1.1em;
}

.next-info {
    margin: 15px 0;
    padding: 10px;
    background: rgba(100, 200, 100, 0.1);
    border-radius: 8px;
    border: 1px solid rgba(100, 200, 100, 0.3);
}

.next-value {
    color: #90ee90;
    font-size: 1em;
    margin-bottom: 5px;
}

.crystal-cost {
    display: flex;
    justify-content: center;
    align-items: center;
    color: #ffd700;
    font-size: 1.1em;
    font-weight: bold;
}

/* 強化ボタン */
.upgrade-button {
    width: 100%;
    padding: 12px;
    font-size: 1.1em;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s;
    font-weight: bold;
}

.upgrade-button:hover {
    transform: scale(1.05);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

.upgrade-button:active {
    transform: scale(0.95);
}

/* クリスタル不足時のスタイル */
.stat-card.insufficient-crystals {
    opacity: 0.5;
    background: rgba(50, 50, 50, 0.3);
}

.stat-card.insufficient-crystals .upgrade-button,
.upgrade-button:disabled {
    background: #4a5568;
    cursor: not-allowed;
    opacity: 0.5;
}

/* 最大レベル時のスタイル */
.stat-card.max-level {
    background: rgba(255, 215, 0, 0.1);
    border-color: rgba(255, 215, 0, 0.3);
}

.max-level {
    color: #ffd700;
    font-size: 1.2em;
    font-weight: bold;
    padding: 15px;
    background: rgba(255, 215, 0, 0.2);
    border-radius: 8px;
    margin-top: 15px;
}

/* 確認ダイアログ */
.upgrade-dialog {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2000;
}

.dialog-content {
    background: linear-gradient(135deg, #2d3748 0%, #1a202c 100%);
    padding: 30px;
    border-radius: 15px;
    text-align: center;
    max-width: 400px;
    border: 2px solid rgba(255, 255, 255, 0.2);
}

.dialog-content p {
    color: #fff;
    font-size: 1.2em;
    line-height: 1.6;
    margin-bottom: 20px;
}

.warning-cost {
    color: #ff6b6b !important;
    font-weight: bold;
}

.dialog-buttons {
    display: flex;
    gap: 15px;
    justify-content: center;
}

.dialog-buttons button {
    padding: 12px 30px;
    font-size: 1.1em;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s;
    font-weight: bold;
}

#upgrade-confirm-yes {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

#upgrade-confirm-yes:hover {
    transform: scale(1.05);
}

#upgrade-confirm-no {
    background: #4a5568;
    color: white;
}

#upgrade-confirm-no:hover {
    background: #2d3748;
}

/* チュートリアル */
.upgrade-tutorial {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 3000;
}

.tutorial-content {
    background: linear-gradient(135deg, #2d3748 0%, #1a202c 100%);
    padding: 40px;
    border-radius: 20px;
    text-align: center;
    max-width: 500px;
    border: 3px solid #667eea;
}

.tutorial-content h2 {
    color: #fff;
    font-size: 1.8em;
    margin-bottom: 20px;
}

.tutorial-content p {
    color: #e0e0e0;
    font-size: 1.1em;
    line-height: 1.6;
    margin-bottom: 30px;
}

#tutorial-close {
    padding: 12px 40px;
    font-size: 1.1em;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s;
    font-weight: bold;
}

#tutorial-close:hover {
    transform: scale(1.05);
}

/* 強化成功アニメーション */
.stat-card.upgrade-success {
    animation: upgradeSuccess 1.5s ease;
}

@keyframes upgradeSuccess {
    0% {
        transform: scale(1);
        background: rgba(255, 255, 255, 0.1);
    }
    50% {
        transform: scale(1.1);
        background: rgba(100, 255, 100, 0.3);
        box-shadow: 0 0 30px rgba(100, 255, 100, 0.5);
    }
    100% {
        transform: scale(1);
        background: rgba(255, 255, 255, 0.1);
    }
}