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

.bkbg-wsc-title {
    font-weight: 800;
    margin: 0 0 4px;
    line-height: 1.2;
    font-family:      var(--bkwsc-tt-font-family, inherit);
    font-size:        var(--bkwsc-tt-font-size-d, 28px);
    font-weight:      var(--bkwsc-tt-font-weight, 800);
    line-height:      var(--bkwsc-tt-line-height-d, 1.2);
    letter-spacing:   var(--bkwsc-tt-letter-spacing-d);
    word-spacing:     var(--bkwsc-tt-word-spacing-d);
    text-transform:   var(--bkwsc-tt-text-transform);
    font-style:       var(--bkwsc-tt-font-style);
    text-decoration:  var(--bkwsc-tt-text-decoration);
}

.bkbg-wsc-app h3.bkbg-wsc-title {
    font-family:      var(--bkwsc-tt-font-family, inherit);
    font-size:        var(--bkwsc-tt-font-size-d, 28px);
    font-weight:      var(--bkwsc-tt-font-weight, 800);
    line-height:      var(--bkwsc-tt-line-height-d, 1.2);
    letter-spacing:   var(--bkwsc-tt-letter-spacing-d);
    word-spacing:     var(--bkwsc-tt-word-spacing-d);
    text-transform:   var(--bkwsc-tt-text-transform);
    font-style:       var(--bkwsc-tt-font-style);
    text-decoration:  var(--bkwsc-tt-text-decoration);
}

.bkbg-wsc-subtitle {
    margin: 0 0 16px;
    font-family:      var(--bkwsc-st-font-family, inherit);
    font-size:        var(--bkwsc-st-font-size-d, 14px);
    font-weight:      var(--bkwsc-st-font-weight);
    line-height:      var(--bkwsc-st-line-height-d);
    letter-spacing:   var(--bkwsc-st-letter-spacing-d);
    word-spacing:     var(--bkwsc-st-word-spacing-d);
    text-transform:   var(--bkwsc-st-text-transform);
    font-style:       var(--bkwsc-st-font-style);
    text-decoration:  var(--bkwsc-st-text-decoration);
}

/* Stats bar */
.bkbg-wsc-stats {
    display: flex;
    justify-content: center;
    gap: 14px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.bkbg-wsc-stat {
    border-radius: 10px;
    padding: 8px 18px;
    text-align: center;
    min-width: 64px;
    box-shadow: 0 1px 6px rgba(0,0,0,.06);
}

.bkbg-wsc-stat-val {
    font-size: 22px;
    font-weight: 900;
    line-height: 1;
}

.bkbg-wsc-stat-lbl {
    font-size: 12px;
    margin-top: 2px;
}

/* Card */
.bkbg-wsc-card {
    border-radius: 14px;
    padding: 20px 24px;
    margin-bottom: 14px;
    box-shadow: 0 2px 12px rgba(0,0,0,.06);
}

.bkbg-wsc-category {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 8px;
}

/* Scrambled letter tiles */
.bkbg-wsc-tiles {
    display: flex;
    justify-content: center;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 14px;
}

.bkbg-wsc-tile {
    width: 38px;
    height: 44px;
    border-radius: 8px;
    border: 2px solid;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    font-weight: 900;
    transition: transform 0.2s;
    user-select: none;
}

.bkbg-wsc-tile.bkbg-wsc-hint {
    border-color: #22c55e !important;
    color: #22c55e !important;
    background: #f0fdf4;
    animation: bkbg-wsc-hint-pop 0.3s;
}

@keyframes bkbg-wsc-hint-pop {
    0%  { transform: scale(0.8) rotate(-10deg); }
    60% { transform: scale(1.15) rotate(3deg); }
    100%{ transform: scale(1) rotate(0); }
}

/* Answer input */
.bkbg-wsc-input {
    width: 100%;
    padding: 10px 14px;
    border-radius: 8px;
    border: 2px solid #e5e7eb;
    font-size: 16px;
    text-align: center;
    font-family: monospace;
    letter-spacing: 2px;
    text-transform: uppercase;
    outline: none;
    transition: border-color 0.2s;
    box-sizing: border-box;
}

.bkbg-wsc-input:focus   { border-color: var(--bkbg-wsc-accent, #f59e0b); }
.bkbg-wsc-input.bkbg-wsc-correct { border-color: #22c55e; background: #f0fdf4; animation: bkbg-wsc-correct-shake 0.4s; }
.bkbg-wsc-input.bkbg-wsc-wrong   { border-color: #ef4444; background: #fef2f2; animation: bkbg-wsc-wrong-shake 0.4s; }

@keyframes bkbg-wsc-correct-shake {
    0%  { transform: scale(1); }
    30% { transform: scale(1.04); }
    100%{ transform: scale(1); }
}

@keyframes bkbg-wsc-wrong-shake {
    0%,100%{ transform: translateX(0); }
    20%    { transform: translateX(-6px); }
    40%    { transform: translateX(6px); }
    60%    { transform: translateX(-4px); }
    80%    { transform: translateX(4px); }
}

/* Feedback label */
.bkbg-wsc-feedback {
    font-size: 14px;
    font-weight: 700;
    min-height: 20px;
    margin-top: 8px;
    transition: opacity 0.3s;
}

/* Buttons */
.bkbg-wsc-actions {
    display: flex;
    gap: 10px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 10px;
}

.bkbg-wsc-btn {
    padding: 10px 24px;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
    border: none;
    color: #fff;
    transition: opacity 0.2s, transform 0.1s;
}

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

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

/* Category/difficulty tabs */
.bkbg-wsc-tab-row {
    display: flex;
    justify-content: center;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 10px;
}

.bkbg-wsc-tab {
    border-radius: 20px;
    border: 2px solid;
    padding: 4px 14px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.15s, color 0.15s;
}

/* Timer bar */
.bkbg-wsc-timer-bar-wrap {
    height: 6px;
    border-radius: 4px;
    background: #e5e7eb;
    overflow: hidden;
    margin-bottom: 14px;
}

.bkbg-wsc-timer-bar {
    height: 100%;
    border-radius: 4px;
    transition: width 1s linear, background-color 0.5s;
}

/* Game over overlay */
.bkbg-wsc-gameover {
    text-align: center;
    padding: 20px;
    animation: bkbg-wsc-fade-in 0.4s;
}

@keyframes bkbg-wsc-fade-in {
    from { opacity: 0; transform: scale(0.95); }
    to   { opacity: 1; transform: scale(1); }
}

.bkbg-wsc-gameover-emoji { font-size: 52px; margin-bottom: 8px; }
.bkbg-wsc-gameover-title { font-size: 24px; font-weight: 800; margin-bottom: 4px; }
.bkbg-wsc-gameover-score { font-size: 16px; margin-bottom: 18px; }

@media (max-width: 420px) {
    .bkbg-wsc-tile { width: 32px; height: 38px; font-size: 18px; }
    .bkbg-wsc-wrap { padding: 14px; }
}

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

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