.bkbg-ttt-wrap {
    padding: 28px 20px;
    border-radius: 16px;
    font-family: system-ui, -apple-system, sans-serif;
    box-sizing: border-box;
    text-align: center;
}

.bkbg-ttt-title {
    font-family:      var(--bkttt-tt-font-family, inherit);
    font-size:        var(--bkttt-tt-font-size-d, 28px);
    line-height:      var(--bkttt-tt-line-height-d, 1.2);
    font-weight:      var(--bkttt-tt-font-weight, 800);
    font-style:       var(--bkttt-tt-font-style, normal);
    text-decoration:  var(--bkttt-tt-text-decoration, none);
    text-transform:   var(--bkttt-tt-text-transform, none);
    letter-spacing:   var(--bkttt-tt-letter-spacing-d, normal);
    word-spacing:     var(--bkttt-tt-word-spacing-d, normal);
    margin: 0 0 4px;
}

.bkbg-ttt-root h3.bkbg-ttt-title {
    font-family:      var(--bkttt-tt-font-family, inherit);
    font-size:        var(--bkttt-tt-font-size-d, 28px);
    line-height:      var(--bkttt-tt-line-height-d, 1.2);
    font-weight:      var(--bkttt-tt-font-weight, 800);
    font-style:       var(--bkttt-tt-font-style, normal);
    text-decoration:  var(--bkttt-tt-text-decoration, none);
    text-transform:   var(--bkttt-tt-text-transform, none);
    letter-spacing:   var(--bkttt-tt-letter-spacing-d, normal);
    word-spacing:     var(--bkttt-tt-word-spacing-d, normal);
    margin: 0 0 4px;
}

.bkbg-ttt-subtitle {
    font-family:      var(--bkttt-st-font-family, inherit);
    font-size:        var(--bkttt-st-font-size-d, 14px);
    line-height:      var(--bkttt-st-line-height-d, normal);
    font-weight:      var(--bkttt-st-font-weight, normal);
    font-style:       var(--bkttt-st-font-style, normal);
    text-decoration:  var(--bkttt-st-text-decoration, none);
    text-transform:   var(--bkttt-st-text-transform, none);
    letter-spacing:   var(--bkttt-st-letter-spacing-d, normal);
    word-spacing:     var(--bkttt-st-word-spacing-d, normal);
    margin: 0 0 16px;
}

@media (max-width: 1024px) {
    .bkbg-ttt-root .bkbg-ttt-title {
        font-size:        var(--bkttt-tt-font-size-t, var(--bkttt-tt-font-size-d, 28px));
        line-height:      var(--bkttt-tt-line-height-t, var(--bkttt-tt-line-height-d, 1.2));
        letter-spacing:   var(--bkttt-tt-letter-spacing-t, var(--bkttt-tt-letter-spacing-d, normal));
        word-spacing:     var(--bkttt-tt-word-spacing-t, var(--bkttt-tt-word-spacing-d, normal));
    }
    .bkbg-ttt-root .bkbg-ttt-subtitle {
        font-size:        var(--bkttt-st-font-size-t, var(--bkttt-st-font-size-d, 14px));
        line-height:      var(--bkttt-st-line-height-t, var(--bkttt-st-line-height-d, normal));
        letter-spacing:   var(--bkttt-st-letter-spacing-t, var(--bkttt-st-letter-spacing-d, normal));
        word-spacing:     var(--bkttt-st-word-spacing-t, var(--bkttt-st-word-spacing-d, normal));
    }
}

@media (max-width: 767px) {
    .bkbg-ttt-root .bkbg-ttt-title {
        font-size:        var(--bkttt-tt-font-size-m, var(--bkttt-tt-font-size-t, var(--bkttt-tt-font-size-d, 28px)));
        line-height:      var(--bkttt-tt-line-height-m, var(--bkttt-tt-line-height-t, var(--bkttt-tt-line-height-d, 1.2)));
        letter-spacing:   var(--bkttt-tt-letter-spacing-m, var(--bkttt-tt-letter-spacing-t, var(--bkttt-tt-letter-spacing-d, normal)));
        word-spacing:     var(--bkttt-tt-word-spacing-m, var(--bkttt-tt-word-spacing-t, var(--bkttt-tt-word-spacing-d, normal)));
    }
    .bkbg-ttt-root .bkbg-ttt-subtitle {
        font-size:        var(--bkttt-st-font-size-m, var(--bkttt-st-font-size-t, var(--bkttt-st-font-size-d, 14px)));
        line-height:      var(--bkttt-st-line-height-m, var(--bkttt-st-line-height-t, var(--bkttt-st-line-height-d, normal)));
        letter-spacing:   var(--bkttt-st-letter-spacing-m, var(--bkttt-st-letter-spacing-t, var(--bkttt-st-letter-spacing-d, normal)));
        word-spacing:     var(--bkttt-st-word-spacing-m, var(--bkttt-st-word-spacing-t, var(--bkttt-st-word-spacing-d, normal)));
    }
}

/* Score bar */
.bkbg-ttt-score {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 18px;
    flex-wrap: wrap;
}

.bkbg-ttt-score-box {
    border-radius: 10px;
    padding: 8px 20px;
    text-align: center;
    box-shadow: 0 1px 6px rgba(0,0,0,0.07);
    min-width: 70px;
}

.bkbg-ttt-score-val {
    font-size: 24px;
    font-weight: 900;
    line-height: 1;
}

.bkbg-ttt-score-lbl {
    font-size: 12px;
    margin-top: 2px;
}

/* Mode/difficulty switcher */
.bkbg-ttt-mode-row {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 14px;
    flex-wrap: wrap;
}

.bkbg-ttt-mode-btn {
    border-radius: 20px;
    border: 2px solid;
    padding: 5px 14px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.15s, color 0.15s;
}

/* Status badge */
.bkbg-ttt-status {
    border-radius: 10px;
    padding: 10px 14px;
    margin-bottom: 16px;
    font-weight: 700;
    font-size: 15px;
    color: #fff;
    transition: background 0.3s;
}

/* Board */
.bkbg-ttt-board {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
    max-width: 300px;
    margin: 0 auto 18px;
}

.bkbg-ttt-cell {
    aspect-ratio: 1;
    border-radius: 14px;
    border: 2px solid;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 42px;
    font-weight: 900;
    cursor: pointer;
    transition: background 0.15s, transform 0.1s;
    user-select: none;
    -webkit-user-select: none;
    position: relative;
    overflow: hidden;
}

.bkbg-ttt-cell:hover:not(.bkbg-ttt-taken) {
    filter: brightness(0.93);
}

.bkbg-ttt-cell:active:not(.bkbg-ttt-taken) {
    transform: scale(0.93);
}

.bkbg-ttt-cell.bkbg-ttt-taken {
    cursor: default;
}

.bkbg-ttt-cell span {
    display: block;
    animation: bkbg-ttt-place 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes bkbg-ttt-place {
    from { transform: scale(0) rotate(-15deg); opacity: 0; }
    to   { transform: scale(1) rotate(0deg);   opacity: 1; }
}

.bkbg-ttt-cell.bkbg-ttt-win {
    animation: bkbg-ttt-win-pulse 0.5s ease infinite alternate;
}

@keyframes bkbg-ttt-win-pulse {
    from { transform: scale(1); }
    to   { transform: scale(1.06); }
}

/* Actions */
.bkbg-ttt-actions {
    display: flex;
    gap: 10px;
    justify-content: center;
    flex-wrap: wrap;
}

.bkbg-ttt-btn {
    padding: 10px 26px;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
    border: none;
    color: #fff;
    transition: opacity 0.2s, transform 0.1s;
}

.bkbg-ttt-btn:hover  { opacity: 0.85; }
.bkbg-ttt-btn:active { transform: scale(0.97); }

.bkbg-ttt-btn-outline {
    background: transparent !important;
    border: 2px solid;
    color: inherit !important;
}

/* AI thinking indicator */
.bkbg-ttt-thinking {
    display: inline-flex;
    gap: 4px;
    margin-top: 8px;
}

.bkbg-ttt-thinking span {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #fff;
    opacity: 0.6;
    animation: bkbg-ttt-dot 1.2s infinite;
}
.bkbg-ttt-thinking span:nth-child(2) { animation-delay: 0.2s; }
.bkbg-ttt-thinking span:nth-child(3) { animation-delay: 0.4s; }

@keyframes bkbg-ttt-dot {
    0%, 80%, 100% { transform: scale(0.8); opacity: 0.4; }
    40%           { transform: scale(1.2); opacity: 1; }
}

@media (max-width: 400px) {
    .bkbg-ttt-wrap  { padding: 14px; }
    .bkbg-ttt-board { max-width: 240px; gap: 5px; }
    .bkbg-ttt-cell  { font-size: 32px; border-radius: 10px; }
}