/* ── Override shared focus ring — keep border only, no outer glow ── */
.rsc-section .tool-input:focus,
.rsc-section .tool-select:focus {
    box-shadow: none;
}

/* Layout */
.rsc-layout {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    padding: 20px;
}

@media (max-width: 860px) {
    .rsc-layout {
        padding: 16px;
    }
}

/* ── URL row ── */
.rsc-url-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.rsc-url-input {
    flex: 1;
}

/* ── OR divider ── */
.rsc-or-divider {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
    color: var(--tool-text-muted);
    font-size: 0.8125rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.rsc-or-divider::before,
.rsc-or-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--tool-border);
}

/* ── Textarea ── */
.rsc-textarea {
    width: 100%;
    box-sizing: border-box;
    min-height: 180px;
    resize: vertical;
    font-size: 1rem;
    line-height: 1.75;
    margin-bottom: 0.6rem;
}

.rsc-input-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.rsc-input-btns {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.rsc-meta-info {
    font-size: 0.8125rem;
    color: var(--tool-text-muted);
}

/* ── Verdict card ── */
.rsc-verdict-card {
    border: 1px solid var(--tool-border);
    border-radius: var(--tool-radius-md);
    overflow: hidden;
    margin-bottom: 0.85rem;
}

.rsc-verdict-badge {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.85rem 1.1rem;
}

.rsc-verdict-badge--easy {
    background: rgba(34, 197, 94, 0.12);
    border-bottom: 1px solid rgba(34, 197, 94, 0.2);
    color: #166534;
}

.rsc-verdict-badge--moderate {
    background: rgba(234, 179, 8, 0.12);
    border-bottom: 1px solid rgba(234, 179, 8, 0.2);
    color: #92400e;
}

.rsc-verdict-badge--hard {
    background: rgba(239, 68, 68, 0.12);
    border-bottom: 1px solid rgba(239, 68, 68, 0.2);
    color: #991b1b;
}

.rsc-verdict-badge i {
    font-size: 1.4rem;
}

.rsc-verdict-label {
    font-size: 1.0625rem;
    font-weight: 700;
}

.rsc-verdict-body {
    padding: 0.8rem 1.1rem;
}

.rsc-verdict-audience {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--tool-text-primary);
    margin: 0 0 0.4rem;
    line-height: 1.4;
}

.rsc-verdict-tip {
    font-size: 0.875rem;
    color: var(--tool-text-muted);
    margin: 0;
    line-height: 1.5;
}

/* ── Formula Details (collapsible) ── */
.rsc-formula-details {
    border: 1px solid var(--tool-border);
    border-radius: var(--tool-radius-md);
    margin-top: 0.75rem;
    margin-bottom: 0.85rem;
    overflow: hidden;
}

.rsc-formula-details-toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.65rem 1rem;
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--tool-text-secondary);
    background: var(--tool-surface);
    list-style: none;
    user-select: none;
    gap: 0.5rem;
}

.rsc-formula-details-toggle::-webkit-details-marker {
    display: none;
}

.rsc-formula-details-toggle span:first-child {
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.rsc-formula-details-hint {
    font-size: 0.75rem;
    color: var(--tool-text-muted);
    font-weight: 400;
    margin-left: auto;
    margin-right: 0.4rem;
}

.rsc-formula-details[open] .rsc-formula-details-toggle {
    border-bottom: 1px solid var(--tool-border);
}

.rsc-formula-details-chevron {
    font-size: 0.875rem;
    color: var(--tool-text-muted);
    transition: transform 0.2s ease;
    flex-shrink: 0;
}

.rsc-formula-details[open] .rsc-formula-details-chevron {
    transform: rotate(180deg);
}

.rsc-formula-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.45rem;
    padding: 0.65rem;
    background: var(--tool-bg);
}

@media (max-width: 480px) {
    .rsc-formula-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.rsc-formula-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0.5rem 0.4rem;
    border: 1px solid var(--tool-border);
    border-radius: var(--tool-radius-sm);
    background: var(--tool-surface);
    text-align: center;
}

.rsc-fi-name {
    font-size: 0.6875rem;
    font-weight: 600;
    color: var(--tool-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: 0.2rem;
}

.rsc-fi-score {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--tool-text-primary);
    line-height: 1.2;
}

.rsc-fi-label {
    font-size: 0.6875rem;
    color: var(--tool-text-muted);
    margin-top: 0.15rem;
}

.rsc-fi-bar-track {
    width: 100%;
    height: 5px;
    border-radius: 3px;
    background: var(--tool-border);
    margin: 0.25rem 0 0.1rem;
    overflow: hidden;
}

.rsc-fi-bar-fill {
    height: 100%;
    border-radius: 3px;
    background: var(--tool-accent);
    transition: width 0.4s ease;
    width: 0%;
}

/* ── Stats grid — 3 cols × 3 rows ── */
.rsc-stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.55rem;
    margin-bottom: 0.75rem;
}

@media (max-width: 400px) {
    .rsc-stats-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.rsc-stat {
    padding: 0.6rem 0.7rem;
    border: 1px solid var(--tool-border);
    border-radius: var(--tool-radius-md);
    background: var(--tool-surface);
    text-align: center;
}

.rsc-stat-val {
    display: block;
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--tool-text-primary);
    line-height: 1.2;
}

.rsc-stat-lbl {
    font-size: 0.6875rem;
    color: var(--tool-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    font-weight: 600;
}

/* ── Empty state ── */
.rsc-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 2rem 1rem;
    color: var(--tool-text-muted);
}

.rsc-empty-icon {
    font-size: 2.5rem;
    margin-bottom: 0.75rem;
    color: var(--tool-accent);
    opacity: 0.5;
}

.rsc-empty p {
    font-size: 0.9375rem;
    margin: 0 0 0.4rem;
    color: var(--tool-text-secondary);
}

.rsc-empty-sub {
    font-size: 0.875rem !important;
    color: var(--tool-text-muted) !important;
}

/* ── Sentence highlighting ── */
.rsc-highlight-section {
    border-top: 1px solid var(--tool-border);
    padding-top: 14px;
}

.rsc-highlight-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 10px;
}

.rsc-highlight-title {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--tool-text-primary);
    display: flex;
    align-items: center;
    gap: 5px;
}

.rsc-legend {
    display: flex;
    gap: 8px;
    font-size: 0.875rem;
    font-weight: 500;
}

.rsc-highlight-text {
    font-size: 0.9375rem;
    line-height: 1.85;
    color: var(--tool-text-primary);
}

.rsc-sent {
    border-radius: 3px;
    padding: 1px 3px;
}

/* Light-background-safe colours */
.rsc-sent--easy {
    background: rgba(34, 197, 94, 0.15);
    color: #166534;
}

.rsc-sent--medium {
    background: rgba(234, 179, 8, 0.2);
    color: #713f12;
}

.rsc-sent--hard {
    background: rgba(239, 68, 68, 0.15);
    color: #991b1b;
}