@media (max-width: 600px) {
    .header {
        justify-content: center;
        text-align: center;
    }
    .title-group {
        align-items: center;
    }
    .title {
        font-size: 34px;
    }
    .board-section {
        --cell-size: 70px;
        --cell-gap: 8px;
    }
    .btn {
        width: 55px;
        height: 55px;
        font-size: 24px;
    }
    .modal-content {
        padding: 20px 25px;
        font-size: 22px;
        min-width: 260px;
    }
    .modal-btn {
        padding: 8px 18px;
        font-size: 16px;
    }
}

@media (max-width: 380px) {
    .board-section {
        --cell-size: 62px;
        --cell-gap: 7px;
        padding: 10px;
    }
    .title {
        font-size: 28px;
    }
    .subtitle {
        font-size: 12px;
    }
    .score-box {
        padding: 6px 14px;
        min-width: 60px;
    }
    .score-value {
        font-size: 20px;
    }
    .reset-btn {
        padding: 10px 20px;
        font-size: 14px;
    }
    .btn {
        width: 48px;
        height: 48px;
        font-size: 20px;
        border-radius: 10px;
    }
    .dpad {
        gap: 8px;
    }
}