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

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

.bkbg-coh-subtitle {
    font-size: var(--bkbg-coh-st-font-size-d, 14px);
    line-height: var(--bkbg-coh-st-line-height-d, 1.5);
    font-family: var(--bkbg-coh-st-font-family, inherit);
    font-weight: var(--bkbg-coh-st-font-weight, 400);
    font-style: var(--bkbg-coh-st-font-style, normal);
    text-transform: var(--bkbg-coh-st-text-transform, none);
    text-decoration: var(--bkbg-coh-st-text-decoration, none);
    letter-spacing: var(--bkbg-coh-st-letter-spacing-d, normal);
    word-spacing: var(--bkbg-coh-st-word-spacing-d, normal);
    margin: 0 0 20px;
}

/* Harmony type tabs */
.bkbg-coh-tabs {
    display: flex;
    justify-content: center;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

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

/* Color picker row */
.bkbg-coh-picker-row {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 18px;
    flex-wrap: wrap;
}

.bkbg-coh-picker-preview {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: 3px solid;
    cursor: pointer;
    position: relative;
}

.bkbg-coh-picker-input {
    position: absolute;
    inset: 0;
    opacity: 0;
    cursor: pointer;
    width: 100%;
    height: 100%;
    border: none;
    padding: 0;
}

.bkbg-coh-hex-label {
    font-family: monospace;
    font-size: 18px;
    font-weight: 800;
    letter-spacing: 1px;
}

/* Swatch card */
.bkbg-coh-card {
    border-radius: 14px;
    padding: 20px;
    margin-bottom: 16px;
    box-shadow: 0 2px 12px rgba(0,0,0,.05);
}

.bkbg-coh-swatches {
    display: flex;
    justify-content: center;
    gap: 14px;
    flex-wrap: wrap;
}

.bkbg-coh-swatch-item {
    text-align: center;
    cursor: pointer;
    transition: transform 0.15s;
}

.bkbg-coh-swatch-item:hover { transform: translateY(-4px) scale(1.05); }

.bkbg-coh-swatch-box {
    border-radius: 12px;
    box-shadow: 0 3px 12px rgba(0,0,0,.15);
    border: 2px solid rgba(0,0,0,.06);
    transition: box-shadow 0.15s;
    position: relative;
    overflow: hidden;
}

.bkbg-coh-swatch-box::after {
    content: '📋';
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    opacity: 0;
    transition: opacity 0.15s;
    background: rgba(255,255,255,0.25);
}

.bkbg-coh-swatch-item:hover .bkbg-coh-swatch-box::after { opacity: 1; }

.bkbg-coh-swatch-hex {
    font-size: 12px;
    font-family: monospace;
    font-weight: 600;
    margin-top: 6px;
    color: #374151;
}

.bkbg-coh-swatch-rgb {
    font-size: 10px;
    font-family: monospace;
    color: #9ca3af;
    margin-top: 2px;
}

.bkbg-coh-swatch-base-lbl {
    font-size: 10px;
    color: #9ca3af;
    margin-top: 2px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Copied toast */
.bkbg-coh-copied {
    position: absolute;
    top: 4px;
    left: 50%;
    transform: translateX(-50%) scale(0.8);
    background: rgba(0,0,0,0.75);
    color: #fff;
    font-size: 11px;
    padding: 2px 8px;
    border-radius: 10px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s, transform 0.2s;
    white-space: nowrap;
}

.bkbg-coh-copied.show {
    opacity: 1;
    transform: translateX(-50%) scale(1);
}

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

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

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

@media (max-width: 1024px) {
    .bkbg-coh-title {
        font-size: var(--bkbg-coh-tt-font-size-t, var(--bkbg-coh-tt-font-size-d, 28px));
        line-height: var(--bkbg-coh-tt-line-height-t, var(--bkbg-coh-tt-line-height-d, 1.2));
        letter-spacing: var(--bkbg-coh-tt-letter-spacing-t, var(--bkbg-coh-tt-letter-spacing-d, normal));
        word-spacing: var(--bkbg-coh-tt-word-spacing-t, var(--bkbg-coh-tt-word-spacing-d, normal));
    }
    .bkbg-coh-subtitle {
        font-size: var(--bkbg-coh-st-font-size-t, var(--bkbg-coh-st-font-size-d, 14px));
        line-height: var(--bkbg-coh-st-line-height-t, var(--bkbg-coh-st-line-height-d, 1.5));
        letter-spacing: var(--bkbg-coh-st-letter-spacing-t, var(--bkbg-coh-st-letter-spacing-d, normal));
        word-spacing: var(--bkbg-coh-st-word-spacing-t, var(--bkbg-coh-st-word-spacing-d, normal));
    }
}

@media (max-width: 767px) {
    .bkbg-coh-title {
        font-size: var(--bkbg-coh-tt-font-size-m, var(--bkbg-coh-tt-font-size-t, var(--bkbg-coh-tt-font-size-d, 28px)));
        line-height: var(--bkbg-coh-tt-line-height-m, var(--bkbg-coh-tt-line-height-t, var(--bkbg-coh-tt-line-height-d, 1.2)));
        letter-spacing: var(--bkbg-coh-tt-letter-spacing-m, var(--bkbg-coh-tt-letter-spacing-t, var(--bkbg-coh-tt-letter-spacing-d, normal)));
        word-spacing: var(--bkbg-coh-tt-word-spacing-m, var(--bkbg-coh-tt-word-spacing-t, var(--bkbg-coh-tt-word-spacing-d, normal)));
    }
    .bkbg-coh-subtitle {
        font-size: var(--bkbg-coh-st-font-size-m, var(--bkbg-coh-st-font-size-t, var(--bkbg-coh-st-font-size-d, 14px)));
        line-height: var(--bkbg-coh-st-line-height-m, var(--bkbg-coh-st-line-height-t, var(--bkbg-coh-st-line-height-d, 1.5)));
        letter-spacing: var(--bkbg-coh-st-letter-spacing-m, var(--bkbg-coh-st-letter-spacing-t, var(--bkbg-coh-st-letter-spacing-d, normal)));
        word-spacing: var(--bkbg-coh-st-word-spacing-m, var(--bkbg-coh-st-word-spacing-t, var(--bkbg-coh-st-word-spacing-d, normal)));
    }
}

@media (max-width: 480px) {
    .bkbg-coh-wrap { padding: 14px; }
    .bkbg-coh-swatch-box { border-radius: 8px; }
}