.bkbg-grc-app {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, sans-serif;
    box-sizing: border-box;
}

.bkbg-grc-app *,
.bkbg-grc-app *::before,
.bkbg-grc-app *::after {
    box-sizing: border-box;
}

/* Section wrapper */
.bkbg-grc-section {
    padding-top: 60px;
    padding-bottom: 60px;
}

/* Card */
.bkbg-grc-card {
    background: #fff;
    border-radius: 16px;
    padding: 32px;
    max-width: 640px;
    margin: 0 auto;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.09);
}

/* Header */
.bkbg-grc-title {
    font-family: var(--bkbg-grc-tt-font-family, inherit);
    font-size: var(--bkbg-grc-tt-font-size-d, 28px);
    font-weight: var(--bkbg-grc-tt-font-weight, 700);
    font-style: var(--bkbg-grc-tt-font-style, normal);
    text-decoration: var(--bkbg-grc-tt-text-decoration, none);
    text-transform: var(--bkbg-grc-tt-text-transform, none);
    line-height: var(--bkbg-grc-tt-line-height-d, 1.2);
    letter-spacing: var(--bkbg-grc-tt-letter-spacing-d, normal);
    word-spacing: var(--bkbg-grc-tt-word-spacing-d, normal);
    margin: 0 0 6px;
    color: #1e1b4b;
}

.bkbg-grc-subtitle {
    font-size: 15px;
    color: #6b7280;
    margin: 0 0 22px;
}

/* Result card */
.bkbg-grc-result-card {
    background: #6c3fb5;
    border-radius: 12px;
    padding: 20px 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
    margin-bottom: 20px;
    color: #fff;
    flex-wrap: wrap;
}

.bkbg-grc-result-avg {
    text-align: center;
}

.bkbg-grc-result-pct {
    font-family: var(--bkbg-grc-rs-font-family, inherit);
    font-size: var(--bkbg-grc-rs-font-size-d, 64px);
    font-weight: var(--bkbg-grc-rs-font-weight, 800);
    font-style: var(--bkbg-grc-rs-font-style, normal);
    text-decoration: var(--bkbg-grc-rs-text-decoration, none);
    text-transform: var(--bkbg-grc-rs-text-transform, none);
    line-height: var(--bkbg-grc-rs-line-height-d, 1);
    letter-spacing: var(--bkbg-grc-rs-letter-spacing-d, normal);
    word-spacing: var(--bkbg-grc-rs-word-spacing-d, normal);
}

.bkbg-grc-result-label {
    font-size: 14px;
    opacity: 0.8;
    margin-top: 4px;
}

.bkbg-grc-result-divider {
    width: 1px;
    height: 60px;
    background: rgba(255, 255, 255, 0.25);
    flex-shrink: 0;
}

.bkbg-grc-result-letter-block {
    text-align: center;
}

.bkbg-grc-result-letter {
    font-family: var(--bkbg-grc-lt-font-family, inherit);
    font-size: var(--bkbg-grc-lt-font-size-d, 48px);
    font-weight: var(--bkbg-grc-lt-font-weight, 900);
    font-style: var(--bkbg-grc-lt-font-style, normal);
    text-decoration: var(--bkbg-grc-lt-text-decoration, none);
    text-transform: var(--bkbg-grc-lt-text-transform, none);
    line-height: var(--bkbg-grc-lt-line-height-d, 1.2);
    letter-spacing: var(--bkbg-grc-lt-letter-spacing-d, normal);
    word-spacing: var(--bkbg-grc-lt-word-spacing-d, normal);
    background: rgba(255, 255, 255, 0.15);
    border-radius: 12px;
    padding: 2px 16px;
    display: inline-block;
}

.bkbg-grc-result-letter-label {
    font-size: 13px;
    opacity: 0.8;
    margin-top: 4px;
}

/* Table header */
.bkbg-grc-table-header {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr 80px;
    gap: 6px;
    padding: 6px 10px;
    margin-bottom: 4px;
}

.bkbg-grc-table-header-cell {
    font-size: 12px;
    font-weight: 600;
    color: #374151;
    letter-spacing: 0.03em;
}

/* Table row */
.bkbg-grc-subject-row {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr 80px;
    gap: 6px;
    align-items: center;
    background: #f9fafb;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    padding: 8px 10px;
    margin-bottom: 6px;
    transition: box-shadow 0.2s;
}

.bkbg-grc-subject-row:hover {
    box-shadow: 0 1px 6px rgba(108, 63, 181, 0.1);
}

.bkbg-grc-input {
    padding: 6px 8px;
    border: 1.5px solid #e5e7eb;
    border-radius: 8px;
    font-size: 14px;
    font-family: inherit;
    outline: none;
    width: 100%;
    background: #fff;
    transition: border-color 0.2s;
    -moz-appearance: textfield;
}

.bkbg-grc-input::-webkit-outer-spin-button,
.bkbg-grc-input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.bkbg-grc-input:focus {
    border-color: #6c3fb5;
    box-shadow: 0 0 0 2px rgba(108, 63, 181, 0.12);
}

/* Row actions */
.bkbg-grc-row-actions {
    display: flex;
    align-items: center;
    gap: 6px;
    justify-content: flex-end;
}

.bkbg-grc-grade-badge {
    font-weight: 700;
    font-size: 13px;
    min-width: 28px;
    text-align: center;
}

.bkbg-grc-remove-btn {
    border: none;
    background: #fee2e2;
    color: #ef4444;
    border-radius: 6px;
    cursor: pointer;
    padding: 3px 9px;
    font-weight: 700;
    font-size: 14px;
    line-height: 1.4;
    transition: background 0.2s;
    font-family: inherit;
}

.bkbg-grc-remove-btn:hover {
    background: #fecaca;
}

/* Add subject button */
.bkbg-grc-add-btn {
    margin-top: 8px;
    padding: 9px 18px;
    background: #6c3fb5;
    color: #fff;
    border: none;
    border-radius: 8px;
    font-weight: 700;
    cursor: pointer;
    font-size: 14px;
    font-family: inherit;
    transition: background 0.2s, transform 0.1s;
}

.bkbg-grc-add-btn:hover {
    background: #5b35a0;
    transform: translateY(-1px);
}

/* Grade scale */
.bkbg-grc-scale {
    margin-top: 20px;
    background: #f3f4f6;
    border: 1px solid #e5e7eb;
    border-radius: 10px;
    padding: 14px 16px;
}

.bkbg-grc-scale-title {
    font-size: 12px;
    font-weight: 700;
    color: #374151;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 10px;
}

.bkbg-grc-scale-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.bkbg-grc-scale-item {
    background: #fff;
    border-radius: 6px;
    padding: 5px 10px;
    text-align: center;
    min-width: 52px;
}

.bkbg-grc-scale-letter {
    font-weight: 800;
    font-size: 14px;
}

.bkbg-grc-scale-range {
    font-size: 11px;
    color: #6b7280;
}

/* Responsive */
@media (max-width: 520px) {
    .bkbg-grc-card {
        padding: 20px 14px;
    }

    .bkbg-grc-table-header {
        display: none;
    }

    .bkbg-grc-subject-row {
        grid-template-columns: 1fr 1fr;
        grid-template-rows: auto auto;
    }

    .bkbg-grc-subject-row > :first-child {
        grid-column: 1 / -1;
    }

    .bkbg-grc-row-actions {
        grid-column: 1 / -1;
        justify-content: flex-start;
    }

    .bkbg-grc-result-pct {
        font-size: var(--bkbg-grc-rs-font-size-d, 44px);
    }

    .bkbg-grc-result-letter {
        font-size: var(--bkbg-grc-lt-font-size-d, 36px);
    }
}

/* Typography responsive – tablet */
@media (max-width: 1024px) {
    .bkbg-grc-title {
        font-size: var(--bkbg-grc-tt-font-size-t, var(--bkbg-grc-tt-font-size-d, 28px));
        line-height: var(--bkbg-grc-tt-line-height-t, var(--bkbg-grc-tt-line-height-d, 1.2));
        letter-spacing: var(--bkbg-grc-tt-letter-spacing-t, var(--bkbg-grc-tt-letter-spacing-d, normal));
        word-spacing: var(--bkbg-grc-tt-word-spacing-t, var(--bkbg-grc-tt-word-spacing-d, normal));
    }
    .bkbg-grc-result-pct {
        font-size: var(--bkbg-grc-rs-font-size-t, var(--bkbg-grc-rs-font-size-d, 64px));
        line-height: var(--bkbg-grc-rs-line-height-t, var(--bkbg-grc-rs-line-height-d, 1));
        letter-spacing: var(--bkbg-grc-rs-letter-spacing-t, var(--bkbg-grc-rs-letter-spacing-d, normal));
        word-spacing: var(--bkbg-grc-rs-word-spacing-t, var(--bkbg-grc-rs-word-spacing-d, normal));
    }
    .bkbg-grc-result-letter {
        font-size: var(--bkbg-grc-lt-font-size-t, var(--bkbg-grc-lt-font-size-d, 48px));
        line-height: var(--bkbg-grc-lt-line-height-t, var(--bkbg-grc-lt-line-height-d, 1.2));
        letter-spacing: var(--bkbg-grc-lt-letter-spacing-t, var(--bkbg-grc-lt-letter-spacing-d, normal));
        word-spacing: var(--bkbg-grc-lt-word-spacing-t, var(--bkbg-grc-lt-word-spacing-d, normal));
    }
}

/* Typography responsive – mobile */
@media (max-width: 767px) {
    .bkbg-grc-title {
        font-size: var(--bkbg-grc-tt-font-size-m, var(--bkbg-grc-tt-font-size-t, var(--bkbg-grc-tt-font-size-d, 28px)));
        line-height: var(--bkbg-grc-tt-line-height-m, var(--bkbg-grc-tt-line-height-t, var(--bkbg-grc-tt-line-height-d, 1.2)));
        letter-spacing: var(--bkbg-grc-tt-letter-spacing-m, var(--bkbg-grc-tt-letter-spacing-t, var(--bkbg-grc-tt-letter-spacing-d, normal)));
        word-spacing: var(--bkbg-grc-tt-word-spacing-m, var(--bkbg-grc-tt-word-spacing-t, var(--bkbg-grc-tt-word-spacing-d, normal)));
    }
    .bkbg-grc-result-pct {
        font-size: var(--bkbg-grc-rs-font-size-m, var(--bkbg-grc-rs-font-size-t, var(--bkbg-grc-rs-font-size-d, 64px)));
        line-height: var(--bkbg-grc-rs-line-height-m, var(--bkbg-grc-rs-line-height-t, var(--bkbg-grc-rs-line-height-d, 1)));
        letter-spacing: var(--bkbg-grc-rs-letter-spacing-m, var(--bkbg-grc-rs-letter-spacing-t, var(--bkbg-grc-rs-letter-spacing-d, normal)));
        word-spacing: var(--bkbg-grc-rs-word-spacing-m, var(--bkbg-grc-rs-word-spacing-t, var(--bkbg-grc-rs-word-spacing-d, normal)));
    }
    .bkbg-grc-result-letter {
        font-size: var(--bkbg-grc-lt-font-size-m, var(--bkbg-grc-lt-font-size-t, var(--bkbg-grc-lt-font-size-d, 48px)));
        line-height: var(--bkbg-grc-lt-line-height-m, var(--bkbg-grc-lt-line-height-t, var(--bkbg-grc-lt-line-height-d, 1.2)));
        letter-spacing: var(--bkbg-grc-lt-letter-spacing-m, var(--bkbg-grc-lt-letter-spacing-t, var(--bkbg-grc-lt-letter-spacing-d, normal)));
        word-spacing: var(--bkbg-grc-lt-word-spacing-m, var(--bkbg-grc-lt-word-spacing-t, var(--bkbg-grc-lt-word-spacing-d, normal)));
    }
}