/* ゲーム画面用スタイル */
.score-board {
    display: flex;
    justify-content: space-between;
    margin-bottom: 20px;
    background: #f8f9fa;
    padding: 15px;
    border-radius: 10px;
    flex-wrap: wrap;
    gap: 10px;
}

.score-item {
    font-weight: bold;
    color: #555;
    text-align: center;
}

.word-display {
    font-size: 2.5em;
    font-weight: bold;
    color: #333;
    margin-bottom: 20px;
    letter-spacing: 8px;
    min-height: 60px;
    display: flex;
    justify-content: center;
    align-items: center;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-radius: 15px;
    padding: 20px;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1);
}

.hint {
    background: linear-gradient(135deg, #e3f2fd 0%, #bbdefb 100%);
    padding: 15px;
    border-radius: 10px;
    margin-bottom: 20px;
    font-size: 1.1em;
    color: #1976d2;
    border-left: 4px solid #2196f3;
    box-shadow: 0 2px 8px rgba(33, 150, 243, 0.2);
}

.letters-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    margin-bottom: 30px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.5);
    border-radius: 15px;
}

.letter-button {
    background: linear-gradient(135deg, #4fc3f7 0%, #29b6f6 100%);
    color: white;
    border: none;
    padding: 15px 20px;
    font-size: 1.5em;
    font-weight: bold;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
    min-width: 60px;
    box-shadow: 0 4px 8px rgba(79, 195, 247, 0.3);
}

.letter-button:hover:not(:disabled) {
    background: linear-gradient(135deg, #29b6f6 0%, #0288d1 100%);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(79, 195, 247, 0.4);
}

.letter-button:disabled {
    background: #ccc;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
    opacity: 0.5;
}

.letter-button:active:not(:disabled) {
    transform: translateY(0);
    box-shadow: 0 2px 4px rgba(79, 195, 247, 0.3);
}

/* 結果画面 */
.result-screen {
    text-align: center;
}

.final-score {
    font-size: 3em;
    font-weight: bold;
    color: #4caf50;
    margin: 20px 0;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
}

.medal {
    font-size: 4em;
    margin: 20px 0;
    filter: drop-shadow(0 0 10px rgba(246, 173, 85, 0.5));
}

/* レスポンシブ対応 */
@media (max-width: 600px) {
    .score-board {
        flex-direction: column;
        text-align: center;
    }
    
    .word-display {
        font-size: 2em;
        letter-spacing: 4px;
        padding: 15px;
    }
    
    .letters-container {
        padding: 15px;
        gap: 8px;
    }
    
    .letter-button {
        padding: 12px 16px;
        font-size: 1.3em;
        min-width: 50px;
    }
    
    .hint {
        font-size: 1em;
        padding: 12px;
    }
    
    .final-score {
        font-size: 2.5em;
    }
    
    .medal {
        font-size: 3em;
    }
}

@media (max-width: 400px) {
    .word-display {
        font-size: 1.8em;
        letter-spacing: 2px;
    }
    
    .letter-button {
        padding: 10px 14px;
        font-size: 1.2em;
        min-width: 45px;
    }
    
    .letters-container {
        gap: 6px;
    }
}