/* =========================================================
   Factoring Polynomials Practice
   File:
   /interactive-learning-tools/factoring-polynomials/
   factoring-polynomials.css
   ========================================================= */

.factoring-polynomials-page {
    --clt-ink: #101827;
    --clt-text: #1f2937;
    --clt-muted: #5b6678;
    --clt-border: #dce3eb;
    --clt-soft: #f7f9fc;
    --clt-teal: #0f766e;
    --clt-teal-dark: #0b5f59;
    --clt-teal-light: #f0fdfa;
    --clt-teal-border: #99d5cf;
    --clt-green: #15803d;
    --clt-green-light: #f0fdf4;
    --clt-green-border: #86cda9;
    --clt-red: #dc2626;
    --clt-red-light: #fef2f2;
    --clt-red-border: #f0a7a7;
    --clt-blue: #1e40af;
    --clt-blue-light: #eff6ff;
    --clt-blue-border: #93c5fd;
    --clt-amber: #92400e;
    --clt-amber-light: #fffbeb;
    --clt-amber-border: #f6c86b;
    background: #ffffff;
    color: var(--clt-text);
    font-family: "Inter", sans-serif;
}

.factoring-polynomials-page *,
.factoring-polynomials-page *::before,
.factoring-polynomials-page *::after {
    box-sizing: border-box;
}

.factoring-polynomials-page [hidden] {
    display: none !important;
}


/* =========================================================
   Shared Section Styles
   ========================================================= */

.factoring-polynomials-overview,
.factoring-polynomials-practice-section,
.factoring-polynomials-reminders,
.factoring-polynomials-final-cta {
    padding: 5rem 0;
}

.factoring-polynomials-overview,
.factoring-polynomials-reminders {
    background: var(--clt-soft);
}

.factoring-polynomials-practice-section,
.factoring-polynomials-final-cta {
    background: #ffffff;
}

.factoring-polynomials-section-heading {
    max-width: 790px;
    margin: 0 auto 2.5rem;
    text-align: center;
}

.factoring-polynomials-section-heading h2 {
    margin-bottom: 1rem;
    color: var(--clt-ink);
    font-size: clamp(1.75rem, 3vw, 2.4rem);
    font-weight: 800;
    line-height: 1.2;
}

.factoring-polynomials-section-heading > p:last-child {
    margin-bottom: 0;
    color: var(--clt-muted);
    font-size: 1.05rem;
    line-height: 1.75;
}

.factoring-polynomials-eyebrow,
.factoring-polynomials-card-label {
    margin-bottom: 0.65rem;
    color: var(--clt-teal);
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}


/* =========================================================
   Buttons and Focus
   ========================================================= */

.factoring-polynomials-page .btn-teal {
    border-color: var(--clt-teal);
    background: var(--clt-teal);
    color: #ffffff;
}

.factoring-polynomials-page .btn-teal:hover,
.factoring-polynomials-page .btn-teal:focus {
    border-color: var(--clt-teal-dark);
    background: var(--clt-teal-dark);
    color: #ffffff;
}

.factoring-polynomials-page .btn-outline-teal {
    border-color: var(--clt-teal);
    background: transparent;
    color: var(--clt-teal);
}

.factoring-polynomials-page .btn-outline-teal:hover,
.factoring-polynomials-page .btn-outline-teal:focus {
    border-color: var(--clt-teal);
    background: var(--clt-teal);
    color: #ffffff;
}

.factoring-polynomials-page button:disabled,
.factoring-polynomials-page input:disabled,
.factoring-polynomials-page select:disabled {
    cursor: not-allowed;
    opacity: 0.66;
}

.factoring-polynomials-page button:focus-visible,
.factoring-polynomials-page select:focus-visible,
.factoring-polynomials-page input:focus-visible {
    outline: 3px solid rgba(20, 184, 166, 0.28);
    outline-offset: 2px;
}


/* =========================================================
   Overview Cards
   ========================================================= */

.factoring-polynomials-overview-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1rem;
}

.factoring-polynomials-overview-card {
    min-height: 100%;
    border: 1px solid var(--clt-border);
    border-radius: 1rem;
    background: #ffffff;
    padding: 1.5rem;
    box-shadow: 0 12px 30px rgba(16, 24, 39, 0.05);
    transition:
        transform 0.2s ease,
        box-shadow 0.2s ease;
}

.factoring-polynomials-overview-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 16px 34px rgba(16, 24, 39, 0.08);
}

.factoring-polynomials-overview-card h3 {
    margin-bottom: 0.75rem;
    color: var(--clt-ink);
    font-size: 1.1rem;
    font-weight: 800;
}

.factoring-polynomials-overview-card p {
    margin-bottom: 0;
    color: var(--clt-muted);
    line-height: 1.65;
}

.factoring-polynomials-step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.65rem;
    height: 2.65rem;
    margin-bottom: 1rem;
    border-radius: 50%;
    background: var(--clt-teal);
    color: #ffffff;
    font-weight: 800;
}


/* =========================================================
   Main Tool Shell and Header
   ========================================================= */

.factoring-polynomials-tool {
    max-width: 1100px;
    margin: 0 auto;
    overflow: hidden;
    border: 1px solid var(--clt-border);
    border-radius: 1.25rem;
    background: #ffffff;
    box-shadow: 0 22px 55px rgba(16, 24, 39, 0.1);
}

.factoring-polynomials-tool-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
    border-bottom: 1px solid #273449;
    background: var(--clt-ink);
    color: #ffffff;
    padding: 1.75rem 2rem;
}

.factoring-polynomials-tool-header h2 {
    margin-bottom: 0;
    color: #ffffff;
    font-size: clamp(1.45rem, 3vw, 2rem);
    font-weight: 800;
}

.factoring-polynomials-tool-header
.factoring-polynomials-eyebrow {
    color: #5eead4;
}

.factoring-polynomials-scoreboard {
    display: grid;
    grid-template-columns: repeat(3, minmax(80px, 1fr));
    gap: 0.75rem;
}

.factoring-polynomials-score-item {
    min-width: 90px;
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: 0.8rem;
    background: rgba(255, 255, 255, 0.08);
    padding: 0.75rem 0.9rem;
    text-align: center;
}

.factoring-polynomials-score-label {
    display: block;
    margin-bottom: 0.2rem;
    color: rgba(255, 255, 255, 0.72);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.factoring-polynomials-score-item strong {
    color: #ffffff;
    font-size: 1.4rem;
    font-weight: 800;
}


/* =========================================================
   Settings
   ========================================================= */

.factoring-polynomials-settings {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.35fr) auto;
    gap: 1rem;
    align-items: end;
    border-bottom: 1px solid var(--clt-border);
    background: var(--clt-soft);
    padding: 1.5rem 2rem;
}

.factoring-polynomials-setting-group label {
    display: block;
    margin-bottom: 0.45rem;
    color: #273449;
    font-size: 0.9rem;
    font-weight: 700;
}

.factoring-polynomials-setting-group .form-select {
    min-height: 3rem;
    border-color: #cfd8e3;
    border-radius: 0.75rem;
    background-color: #ffffff;
}

.factoring-polynomials-setting-group .form-select:focus {
    border-color: var(--clt-teal);
    box-shadow: 0 0 0 0.2rem rgba(15, 118, 110, 0.14);
}

.factoring-polynomials-setting-actions {
    display: flex;
    gap: 0.65rem;
}

.factoring-polynomials-setting-actions .btn {
    min-height: 3rem;
    white-space: nowrap;
}


/* =========================================================
   Main Problem Display
   ========================================================= */

.factoring-polynomials-problem-panel {
    scroll-margin-top: 7rem;
    border-bottom: 1px solid var(--clt-border);
    background: #ffffff;
    padding: 2.25rem 2rem 2rem;
    text-align: center;
}

.factoring-polynomials-problem-header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
}

.factoring-polynomials-problem-label {
    margin-bottom: 0;
    color: var(--clt-teal);
    font-size: 0.8rem;
    font-weight: 800;
    letter-spacing: 0.09em;
    text-transform: uppercase;
}

.factoring-polynomials-difficulty-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    background: #e2e8f0;
    color: #475569;
    padding: 0.32rem 0.7rem;
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.factoring-polynomials-difficulty-badge.easy {
    background: #dcfce7;
    color: #166534;
}

.factoring-polynomials-difficulty-badge.medium {
    background: #dbeafe;
    color: #1e40af;
}

.factoring-polynomials-difficulty-badge.hard {
    background: #fef3c7;
    color: #92400e;
}

.factoring-polynomials-problem-instruction {
    max-width: 760px;
    margin: 0 auto 1.3rem;
    color: #64748b;
    line-height: 1.65;
}

.factoring-polynomials-problem-expression {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 12rem;
    min-height: 6.25rem;
    margin-bottom: 1rem;
    border: 1px solid var(--clt-teal-border);
    border-radius: 1rem;
    background: var(--clt-teal-light);
    color: var(--clt-teal);
    padding: 1rem 2rem;
    font-size: clamp(2.4rem, 8vw, 4rem);
    font-weight: 800;
    line-height: 1.15;
    overflow-wrap: anywhere;
}

.factoring-polynomials-problem-expression sup,
.factoring-polynomials-final-answer sup,
.factoring-polynomials-example sup,
.factoring-polynomials-mini-example sup,
.factoring-polynomials-work-summary sup,
.factoring-polynomials-completed-work sup {
    position: relative;
    top: -0.32em;
    font-size: 0.62em;
    line-height: 0;
}

.factoring-polynomials-problem-relationship {
    max-width: 700px;
    margin: 0 auto 1.75rem;
    color: #356b67;
    font-size: 0.96rem;
    font-weight: 600;
    line-height: 1.65;
}


/* =========================================================
   Progress Rail
   ========================================================= */

.factoring-polynomials-progress {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    max-width: 760px;
    margin: 0 auto;
    padding: 0;
    list-style: none;
}

.factoring-polynomials-progress li {
    position: relative;
    display: grid;
    gap: 0.5rem;
    justify-items: center;
    color: #8290a3;
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.factoring-polynomials-progress li::before {
    content: "";
    position: absolute;
    z-index: 0;
    top: 1rem;
    right: 50%;
    width: 100%;
    height: 2px;
    background: #dce3eb;
}

.factoring-polynomials-progress li:first-child::before {
    display: none;
}

.factoring-polynomials-progress li span {
    position: relative;
    z-index: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    border: 2px solid #cbd5e1;
    border-radius: 50%;
    background: #ffffff;
    color: #64748b;
}

.factoring-polynomials-progress li.is-current {
    color: var(--clt-teal);
}

.factoring-polynomials-progress li.is-current span {
    border-color: var(--clt-teal);
    background: var(--clt-teal);
    color: #ffffff;
    box-shadow: 0 0 0 5px rgba(15, 118, 110, 0.12);
}

.factoring-polynomials-progress li.is-complete,
.factoring-polynomials-progress li.completed {
    color: #166534;
}

.factoring-polynomials-progress li.is-complete::before,
.factoring-polynomials-progress li.completed::before {
    background: #86cda9;
}

.factoring-polynomials-progress li.is-complete span,
.factoring-polynomials-progress li.completed span {
    border-color: var(--clt-green);
    background: var(--clt-green);
    color: #ffffff;
}


/* =========================================================
   Workspace and Step Cards
   ========================================================= */

.factoring-polynomials-workspace {
    display: grid;
    gap: 1.25rem;
    background: var(--clt-soft);
    padding: 2rem;
}

.factoring-polynomials-step-card {
    border: 1px solid var(--clt-border);
    border-radius: 1rem;
    background: #ffffff;
    padding: 1.5rem;
    box-shadow: 0 8px 20px rgba(16, 24, 39, 0.035);
    transition:
        border-color 0.2s ease,
        box-shadow 0.2s ease;
}

.factoring-polynomials-step-card[aria-disabled="true"] {
    background: #f8fafc;
    color: #6b7280;
}

.factoring-polynomials-step-card.is-active {
    border-color: var(--clt-teal-border);
    box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.08);
}

.factoring-polynomials-step-card.is-complete,
.factoring-polynomials-step-card.completed {
    border-color: var(--clt-green-border);
}

.factoring-polynomials-step-heading {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 1rem;
    align-items: center;
    margin-bottom: 1rem;
}

.factoring-polynomials-step-heading h3 {
    margin-bottom: 0;
    color: var(--clt-ink);
    font-size: clamp(1.2rem, 2.6vw, 1.55rem);
    font-weight: 800;
}

.factoring-polynomials-step-card[aria-disabled="true"]
.factoring-polynomials-step-heading h3 {
    color: #64748b;
}

.factoring-polynomials-card-label {
    margin-bottom: 0.2rem;
}

.factoring-polynomials-work-step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.7rem;
    height: 2.7rem;
    border-radius: 0.8rem;
    background: #e6fffb;
    color: var(--clt-teal);
    font-size: 1.05rem;
    font-weight: 800;
}

.factoring-polynomials-step-card.is-active
.factoring-polynomials-work-step-number {
    background: var(--clt-teal);
    color: #ffffff;
}

.factoring-polynomials-step-card.is-complete
.factoring-polynomials-work-step-number,
.factoring-polynomials-step-card.completed
.factoring-polynomials-work-step-number {
    background: var(--clt-green);
    color: #ffffff;
}

.factoring-polynomials-step-status {
    border-radius: 999px;
    background: #e2e8f0;
    color: #64748b;
    padding: 0.35rem 0.7rem;
    font-size: 0.7rem;
    font-weight: 800;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    white-space: nowrap;
}

.factoring-polynomials-step-card.is-active
.factoring-polynomials-step-status {
    background: #ccfbf1;
    color: var(--clt-teal);
}

.factoring-polynomials-step-card.is-complete
.factoring-polynomials-step-status,
.factoring-polynomials-step-card.completed
.factoring-polynomials-step-status {
    background: #dcfce7;
    color: #166534;
}

.factoring-polynomials-step-card > p,
.factoring-polynomials-step-card > div > p {
    color: var(--clt-muted);
    line-height: 1.65;
}


/* =========================================================
   Repeated Equation Panels
   ========================================================= */

.factoring-polynomials-step-problem-panel {
    display: block;
    visibility: visible;
    opacity: 1;
    margin: 0 0 1.25rem;
    border: 1px solid var(--clt-border);
    border-radius: 1rem;
    background: #ffffff;
    color: var(--clt-ink);
    padding: 1.4rem;
}

.factoring-polynomials-step-card[aria-disabled="true"]
.factoring-polynomials-step-problem-panel {
    display: block;
    visibility: visible;
    opacity: 1;
}

.factoring-polynomials-step-problem-panel
.factoring-polynomials-problem-expression {
    width: auto;
    min-width: 10rem;
    min-height: 4.5rem;
    margin-bottom: 0.85rem;
    padding: 0.85rem 1.5rem;
    font-size: clamp(2rem, 6vw, 3rem);
}

.factoring-polynomials-step-problem-panel
.factoring-polynomials-problem-instruction {
    margin-bottom: 1rem;
}

.factoring-polynomials-step-problem-panel
.factoring-polynomials-problem-relationship {
    margin-bottom: 0;
}


/* =========================================================
   Choice Buttons
   ========================================================= */

.factoring-polynomials-choice-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0.85rem;
    margin: 1.25rem 0;
}

.factoring-polynomials-choice-grid.two-column {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.factoring-polynomials-choice-grid button,
.factoring-polynomials-choice-grid .choice-button {
    width: 100%;
    min-height: 4rem;
    border: 2px solid var(--clt-border);
    border-radius: 0.9rem;
    background: #ffffff;
    color: #273449;
    padding: 0.9rem 1rem;
    font-size: 1rem;
    font-weight: 800;
    line-height: 1.45;
    text-align: center;
    cursor: pointer;
    transition:
        border-color 0.2s ease,
        background 0.2s ease,
        transform 0.2s ease;
}

.factoring-polynomials-choice-grid button:hover,
.factoring-polynomials-choice-grid button:focus-visible,
.factoring-polynomials-choice-grid .choice-button:hover,
.factoring-polynomials-choice-grid .choice-button:focus-visible {
    transform: translateY(-2px);
    border-color: #5eead4;
    background: var(--clt-teal-light);
}

.factoring-polynomials-choice-grid button.selected,
.factoring-polynomials-choice-grid button[aria-pressed="true"],
.factoring-polynomials-choice-grid .choice-button.selected {
    border-color: var(--clt-teal);
    background: #ccfbf1;
    color: var(--clt-teal-dark);
}

.factoring-polynomials-choice-grid button.correct,
.factoring-polynomials-choice-grid .choice-button.correct {
    border-color: var(--clt-green);
    background: #dcfce7;
    color: #166534;
}

.factoring-polynomials-choice-grid button.incorrect,
.factoring-polynomials-choice-grid .choice-button.incorrect {
    border-color: var(--clt-red);
    background: var(--clt-red-light);
    color: #991b1b;
}


/* =========================================================
   Inputs
   ========================================================= */

.factoring-polynomials-page .form-control {
    min-height: 3.15rem;
    border: 2px solid #cfd8e3;
    border-radius: 0.75rem;
    background: #ffffff;
    color: var(--clt-ink);
    font-size: 1.12rem;
    font-weight: 800;
    text-align: center;
}

.factoring-polynomials-page .form-control:focus {
    border-color: var(--clt-teal);
    box-shadow: 0 0 0 0.2rem rgba(15, 118, 110, 0.14);
}

.factoring-polynomials-page .form-control.correct,
.factoring-polynomials-page .input-correct {
    border-color: var(--clt-green);
    background: var(--clt-green-light);
}

.factoring-polynomials-page .form-control.incorrect,
.factoring-polynomials-page .input-incorrect {
    border-color: var(--clt-red);
    background: var(--clt-red-light);
}


/* =========================================================
   Balance Display
   ========================================================= */

.factoring-polynomials-balance-display {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
    gap: 1rem;
    align-items: center;
    margin: 1.5rem 0;
    border: 1px solid var(--clt-teal-border);
    border-radius: 1rem;
    background: var(--clt-teal-light);
    padding: 1.25rem;
}

.factoring-polynomials-balance-side {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto minmax(70px, 110px);
    gap: 0.6rem;
    align-items: center;
    border: 1px solid #cde9e5;
    border-radius: 0.85rem;
    background: #ffffff;
    padding: 0.9rem;
}

.factoring-polynomials-balance-side > span:first-child {
    color: var(--clt-ink);
    font-size: clamp(1.2rem, 4vw, 1.75rem);
    font-weight: 800;
    text-align: center;
    overflow-wrap: anywhere;
}

.factoring-polynomials-balance-side > span:nth-child(2) {
    color: var(--clt-teal);
    font-size: 1.5rem;
    font-weight: 800;
}

.factoring-polynomials-equals-sign {
    color: var(--clt-teal);
    font-size: 2rem;
    font-weight: 800;
}


/* =========================================================
   Solution Row
   ========================================================= */

.factoring-polynomials-solution-row {
    display: grid;
    grid-template-columns: auto auto minmax(110px, 180px);
    gap: 0.75rem;
    align-items: center;
    width: fit-content;
    max-width: 100%;
    margin: 1.5rem 0;
    border: 1px solid var(--clt-teal-border);
    border-radius: 0.9rem;
    background: var(--clt-teal-light);
    padding: 1rem 1.15rem;
}

.factoring-polynomials-solution-row > span {
    color: var(--clt-teal);
    font-size: 1.65rem;
    font-weight: 800;
}


/* =========================================================
   Calculation Trail and Check Display
   ========================================================= */

.factoring-polynomials-calculation-trail {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.55rem;
    margin: 1.25rem 0;
    border: 1px solid var(--clt-teal-border);
    border-radius: 0.9rem;
    background: var(--clt-teal-light);
    color: #355d59;
    padding: 1rem 1.15rem;
    font-size: 1.05rem;
    font-weight: 700;
    line-height: 1.6;
}

.factoring-polynomials-calculation-trail > span,
.factoring-polynomials-calculation-trail .calculation-step {
    display: inline-flex;
    align-items: center;
    border-radius: 0.55rem;
    background: #ffffff;
    color: var(--clt-teal-dark);
    padding: 0.45rem 0.7rem;
}

.factoring-polynomials-check-display {
    margin: 1.25rem 0;
    border: 1px solid var(--clt-blue-border);
    border-radius: 0.9rem;
    background: var(--clt-blue-light);
    color: var(--clt-blue);
    padding: 1.15rem;
    text-align: center;
    font-size: clamp(1.5rem, 5vw, 2.3rem);
    font-weight: 800;
    overflow-wrap: anywhere;
}


/* =========================================================
   Step Actions
   ========================================================= */

.factoring-polynomials-step-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 1.25rem;
}


/* =========================================================
   Feedback and Work Summaries
   ========================================================= */

.factoring-polynomials-feedback {
    margin-top: 1rem;
    border: 1px solid #cbd5e1;
    border-radius: 0.85rem;
    background: #f8fafc;
    color: #334155;
    padding: 1rem 1.15rem;
    font-weight: 600;
    line-height: 1.6;
}

.factoring-polynomials-feedback.success,
.factoring-polynomials-feedback.correct {
    border-color: var(--clt-green-border);
    background: var(--clt-green-light);
    color: #166534;
}

.factoring-polynomials-feedback.error,
.factoring-polynomials-feedback.incorrect {
    border-color: var(--clt-red-border);
    background: var(--clt-red-light);
    color: #991b1b;
}

.factoring-polynomials-feedback.info {
    border-color: var(--clt-blue-border);
    background: var(--clt-blue-light);
    color: var(--clt-blue);
}

.factoring-polynomials-feedback.warning {
    border-color: var(--clt-amber-border);
    background: var(--clt-amber-light);
    color: var(--clt-amber);
}

.factoring-polynomials-work-summary {
    margin-top: 1rem;
    border-left: 4px solid var(--clt-green);
    border-radius: 0.75rem;
    background: var(--clt-green-light);
    color: #166534;
    padding: 1rem 1.15rem;
    font-weight: 700;
    line-height: 1.65;
    animation: factoring-polynomials-fade-in 0.24s ease;
}


/* =========================================================
   Hint
   ========================================================= */

.factoring-polynomials-hint-area {
    margin-top: 1.25rem;
}

.factoring-polynomials-hint-button {
    border: 0;
    background: transparent;
    color: var(--clt-teal);
    padding: 0;
    font-size: 0.9rem;
    font-weight: 800;
    text-decoration: underline;
    text-underline-offset: 0.2rem;
}

.factoring-polynomials-hint-button:hover,
.factoring-polynomials-hint-button:focus {
    color: var(--clt-teal-dark);
}

.factoring-polynomials-hint {
    margin-top: 0.85rem;
    border: 1px solid var(--clt-amber-border);
    border-radius: 0.85rem;
    background: var(--clt-amber-light);
    color: var(--clt-amber);
    padding: 1rem 1.15rem;
    font-weight: 600;
    line-height: 1.65;
}


/* =========================================================
   Completion
   ========================================================= */

.factoring-polynomials-completion {
    scroll-margin-top: 7rem;
    border: 1px solid var(--clt-green-border);
    border-radius: 1rem;
    background: var(--clt-green-light);
    padding: 2rem;
    text-align: center;
    animation: factoring-polynomials-fade-in 0.28s ease;
}

.factoring-polynomials-completion-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 3.5rem;
    height: 3.5rem;
    margin-bottom: 1rem;
    border-radius: 50%;
    background: var(--clt-green);
    color: #ffffff;
    font-size: 1.7rem;
    font-weight: 800;
}

.factoring-polynomials-completion h3 {
    margin-bottom: 0.85rem;
    color: #14532d;
    font-size: clamp(1.45rem, 3vw, 2rem);
    font-weight: 800;
}

.factoring-polynomials-final-answer {
    margin-bottom: 0.9rem;
    color: #166534;
    font-size: clamp(2rem, 6vw, 3.2rem);
    font-weight: 800;
    overflow-wrap: anywhere;
}

.factoring-polynomials-completion-explanation {
    max-width: 720px;
    margin: 0 auto 1.25rem;
    color: #2f6b46;
    line-height: 1.7;
}

.factoring-polynomials-completed-work {
    display: grid;
    gap: 0.75rem;
    max-width: 760px;
    margin: 0 auto 1.5rem;
    text-align: left;
}

.factoring-polynomials-completed-work > div,
.factoring-polynomials-completed-work .completed-step {
    border: 1px solid #bbdfc7;
    border-radius: 0.75rem;
    background: #ffffff;
    color: #24583a;
    padding: 0.85rem 1rem;
    font-weight: 700;
    line-height: 1.55;
}


/* =========================================================
   Reference Card
   ========================================================= */

.factoring-polynomials-reference-card {
    border: 1px solid var(--clt-border);
    border-radius: 1rem;
    background: #ffffff;
    padding: 1.5rem;
}

.factoring-polynomials-card-heading {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 2rem;
    margin-bottom: 1.25rem;
}

.factoring-polynomials-card-heading h3 {
    margin-bottom: 0;
    color: var(--clt-ink);
    font-size: clamp(1.25rem, 2.6vw, 1.6rem);
    font-weight: 800;
}

.factoring-polynomials-reference-note {
    max-width: 360px;
    margin-bottom: 0;
    color: var(--clt-muted);
    line-height: 1.6;
    text-align: right;
}

.factoring-polynomials-rule-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
}

.factoring-polynomials-rule-grid article {
    display: grid;
    gap: 0.45rem;
    min-height: 100%;
    border: 1px solid var(--clt-border);
    border-radius: 0.85rem;
    background: var(--clt-soft);
    padding: 1.15rem;
}

.factoring-polynomials-rule-grid strong {
    color: var(--clt-ink);
    font-size: 1rem;
    font-weight: 800;
}

.factoring-polynomials-rule-grid span {
    color: var(--clt-muted);
    line-height: 1.55;
}

.factoring-polynomials-mini-example {
    margin-top: 0.35rem;
    border-top: 1px solid var(--clt-border);
    padding-top: 0.65rem;
    color: var(--clt-teal-dark) !important;
    font-weight: 700;
}


/* =========================================================
   Reminder Cards
   ========================================================= */

.factoring-polynomials-reminders-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1rem;
}

.factoring-polynomials-reminder-card {
    min-height: 100%;
    border: 1px solid var(--clt-border);
    border-radius: 1rem;
    background: #ffffff;
    padding: 1.5rem;
    box-shadow: 0 10px 24px rgba(16, 24, 39, 0.04);
}

.factoring-polynomials-reminder-card h3 {
    margin-bottom: 0.75rem;
    color: var(--clt-ink);
    font-size: 1.08rem;
    font-weight: 800;
}

.factoring-polynomials-reminder-card p {
    color: var(--clt-muted);
    line-height: 1.65;
}

.factoring-polynomials-example {
    border-left: 4px solid var(--clt-teal);
    border-radius: 0.65rem;
    background: var(--clt-teal-light);
    color: var(--clt-teal-dark);
    padding: 0.8rem 0.9rem;
    font-weight: 700;
    line-height: 1.55;
}


/* =========================================================
   Final CTA
   ========================================================= */

.factoring-polynomials-final-cta-card {
    max-width: 900px;
    margin: 0 auto;
    border: 1px solid var(--clt-teal-border);
    border-radius: 1.25rem;
    background:
        linear-gradient(
            135deg,
            rgba(240, 253, 250, 0.98),
            rgba(236, 254, 255, 0.92)
        );
    padding: clamp(2rem, 5vw, 3.25rem);
    text-align: center;
    box-shadow: 0 18px 45px rgba(15, 118, 110, 0.08);
}

.factoring-polynomials-final-cta-card h2 {
    margin-bottom: 1rem;
    color: var(--clt-ink);
    font-size: clamp(1.8rem, 3vw, 2.45rem);
    font-weight: 800;
}

.factoring-polynomials-final-cta-card
> p:not(.factoring-polynomials-eyebrow) {
    max-width: 720px;
    margin: 0 auto 1.5rem;
    color: var(--clt-muted);
    font-size: 1.05rem;
    line-height: 1.75;
}


/* =========================================================
   Animation
   ========================================================= */

@keyframes factoring-polynomials-fade-in {
    from {
        opacity: 0;
        transform: translateY(5px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}


/* =========================================================
   Responsive Layout
   ========================================================= */

@media (max-width: 991.98px) {
    .factoring-polynomials-overview-grid,
    .factoring-polynomials-reminders-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .factoring-polynomials-settings {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .factoring-polynomials-setting-actions {
        grid-column: 1 / -1;
        justify-content: flex-start;
    }

    .factoring-polynomials-rule-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .factoring-polynomials-balance-display {
        grid-template-columns: 1fr;
    }

    .factoring-polynomials-equals-sign {
        text-align: center;
    }
}

@media (max-width: 767.98px) {
    .factoring-polynomials-overview,
    .factoring-polynomials-practice-section,
    .factoring-polynomials-reminders,
    .factoring-polynomials-final-cta {
        padding: 3.75rem 0;
    }

    .factoring-polynomials-tool-header {
        display: grid;
        gap: 1.35rem;
        padding: 1.5rem;
    }

    .factoring-polynomials-scoreboard {
        width: 100%;
    }

    .factoring-polynomials-settings {
        grid-template-columns: 1fr;
        padding: 1.25rem 1.5rem;
    }

    .factoring-polynomials-setting-actions {
        grid-column: auto;
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .factoring-polynomials-setting-actions .btn {
        white-space: normal;
    }

    .factoring-polynomials-problem-panel {
        padding: 1.75rem 1.25rem;
    }

    .factoring-polynomials-problem-expression {
        width: 100%;
        min-width: 0;
        min-height: 5.25rem;
        padding: 1rem;
        font-size: clamp(2rem, 12vw, 3.2rem);
    }

    .factoring-polynomials-progress {
        gap: 0.35rem;
    }

    .factoring-polynomials-progress li {
        font-size: 0.66rem;
    }

    .factoring-polynomials-workspace {
        padding: 1.25rem;
    }

    .factoring-polynomials-step-card {
        padding: 1.25rem;
    }

    .factoring-polynomials-step-heading {
        grid-template-columns: auto 1fr;
    }

    .factoring-polynomials-step-status {
        grid-column: 1 / -1;
        justify-self: start;
    }

    .factoring-polynomials-step-problem-panel {
        padding: 1.15rem;
    }

    .factoring-polynomials-step-problem-panel
    .factoring-polynomials-problem-expression {
        width: 100%;
        min-width: 0;
    }

    .factoring-polynomials-choice-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .factoring-polynomials-rule-grid {
        grid-template-columns: 1fr;
    }

    .factoring-polynomials-card-heading {
        display: grid;
        gap: 0.75rem;
    }

    .factoring-polynomials-reference-note {
        max-width: none;
        text-align: left;
    }

    .factoring-polynomials-balance-side {
        grid-template-columns: minmax(0, 1fr) auto minmax(65px, 95px);
    }
}

@media (max-width: 575.98px) {
    .factoring-polynomials-overview-grid,
    .factoring-polynomials-reminders-grid {
        grid-template-columns: 1fr;
    }

    .factoring-polynomials-scoreboard {
        grid-template-columns: repeat(3, minmax(0, 1fr));
        gap: 0.45rem;
    }

    .factoring-polynomials-score-item {
        min-width: 0;
        padding: 0.65rem 0.45rem;
    }

    .factoring-polynomials-score-label {
        font-size: 0.64rem;
    }

    .factoring-polynomials-score-item strong {
        font-size: 1.15rem;
    }

    .factoring-polynomials-setting-actions {
        grid-template-columns: 1fr;
    }

    .factoring-polynomials-problem-header {
        flex-wrap: wrap;
    }

    .factoring-polynomials-progress li {
        font-size: 0.58rem;
        letter-spacing: 0.02em;
    }

    .factoring-polynomials-progress li span {
        width: 1.8rem;
        height: 1.8rem;
    }

    .factoring-polynomials-progress li::before {
        top: 0.9rem;
    }

    .factoring-polynomials-choice-grid,
    .factoring-polynomials-choice-grid.two-column {
        grid-template-columns: 1fr;
    }

    .factoring-polynomials-balance-display {
        padding: 0.85rem;
    }

    .factoring-polynomials-balance-side {
        grid-template-columns: 1fr;
        justify-items: center;
    }

    .factoring-polynomials-balance-side > span:nth-child(2) {
        line-height: 1;
    }

    .factoring-polynomials-balance-side .form-control {
        width: 100%;
    }

    .factoring-polynomials-solution-row {
        grid-template-columns: auto auto minmax(0, 1fr);
        width: 100%;
    }

    .factoring-polynomials-step-actions .btn,
    .factoring-polynomials-completion .btn {
        width: 100%;
    }
}

.fraction-inline
{
    display:inline-flex;
    flex-direction:column;
    align-items:center;
    justify-content:center;
    vertical-align:middle;
    margin:0 .15em;
    line-height:1;
}

.fraction-top
{
    display:block;
    padding:0 .22em .06em;
    border-bottom:4px solid currentColor;
}

.fraction-bottom
{
    display:block;
    padding:.06em .22em 0;
}

.factoring-polynomials-page .equation-fraction {
    display: inline-grid;
    grid-template-rows: auto auto;
    align-items: center;
    justify-items: stretch;
    min-width: 1.35em;
    margin: 0 0.12em;
    vertical-align: middle;
    line-height: 1;
}

.factoring-polynomials-page .equation-fraction-numerator,
.factoring-polynomials-page .equation-fraction-denominator {
    display: block;
    min-width: 100%;
    padding-right: 0.14em;
    padding-left: 0.14em;
    text-align: center;
    line-height: 0.92;
}

.factoring-polynomials-page .equation-fraction-numerator {
    border-bottom: 0.075em solid currentColor;
    padding-top: 0;
    padding-bottom: 0.08em;
}

.factoring-polynomials-page .equation-fraction-denominator {
    padding-top: 0.08em;
    padding-bottom: 0;
}

/* =========================================================
   Two-Step Equation-Specific Additions
   ========================================================= */

.factoring-polynomials-page .factoring-polynomials-problem-expression,
.factoring-polynomials-page .factoring-polynomials-check-display,
.factoring-polynomials-page .factoring-polynomials-calculation-trail,
.factoring-polynomials-page .factoring-polynomials-work-summary,
.factoring-polynomials-page .factoring-polynomials-completed-work {
    font-variant-numeric: tabular-nums;
}

.factoring-polynomials-page .factoring-polynomials-second-operation-label {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 0.8rem;
    border-radius: 999px;
    background: #dbeafe;
    color: #1e40af;
    padding: 0.35rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 800;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.factoring-polynomials-page .factoring-polynomials-intermediate-equation {
    margin: 1rem 0 1.25rem;
    border: 1px solid var(--clt-blue-border);
    border-radius: 0.9rem;
    background: var(--clt-blue-light);
    color: var(--clt-blue);
    padding: 1rem 1.15rem;
    text-align: center;
    font-size: clamp(1.45rem, 5vw, 2.2rem);
    font-weight: 800;
    line-height: 1.45;
    overflow-wrap: anywhere;
}

.factoring-polynomials-page .factoring-polynomials-balance-display + 
.factoring-polynomials-balance-display {
    margin-top: 1rem;
}

.factoring-polynomials-page .factoring-polynomials-step-card.is-active
.factoring-polynomials-step-problem-panel {
    border-color: var(--clt-teal-border);
    box-shadow: 0 0 0 2px rgba(15, 118, 110, 0.06);
}

.factoring-polynomials-page .factoring-polynomials-step-card.is-complete
.factoring-polynomials-step-problem-panel,
.factoring-polynomials-page .factoring-polynomials-step-card.completed
.factoring-polynomials-step-problem-panel {
    border-color: var(--clt-green-border);
}

.factoring-polynomials-page .factoring-polynomials-solution-row {
    margin-right: auto;
    margin-left: auto;
}

.factoring-polynomials-page .factoring-polynomials-solution-row .form-control {
    min-width: 110px;
}

.factoring-polynomials-page .factoring-polynomials-operation-note {
    margin: 1rem 0 0;
    border-left: 4px solid var(--clt-teal);
    border-radius: 0.7rem;
    background: var(--clt-teal-light);
    color: var(--clt-teal-dark);
    padding: 0.9rem 1rem;
    font-weight: 700;
    line-height: 1.6;
}


/* =========================================================
   Fraction Display
   ========================================================= */

.factoring-polynomials-page .equation-fraction {
    display: inline-grid;
    grid-template-rows: auto auto;
    align-items: center;
    justify-items: stretch;
    min-width: 1.35em;
    margin: 0 0.12em;
    vertical-align: middle;
    line-height: 1;
}

.factoring-polynomials-page .equation-fraction-numerator,
.factoring-polynomials-page .equation-fraction-denominator {
    display: block;
    min-width: 100%;
    padding-right: 0.14em;
    padding-left: 0.14em;
    text-align: center;
    line-height: 0.92;
}

.factoring-polynomials-page .equation-fraction-numerator {
    border-bottom: 0.075em solid currentColor;
    padding-top: 0;
    padding-bottom: 0.08em;
}

.factoring-polynomials-page .equation-fraction-denominator {
    padding-top: 0.08em;
    padding-bottom: 0;
}

.factoring-polynomials-page .factoring-polynomials-step-problem-panel
.equation-fraction-numerator,
.factoring-polynomials-page .factoring-polynomials-step-problem-panel
.equation-fraction-denominator {
    line-height: 0.9;
}


/* =========================================================
   Two-Step Progress Emphasis
   ========================================================= */

.factoring-polynomials-page .factoring-polynomials-progress li:nth-child(1).is-current span,
.factoring-polynomials-page .factoring-polynomials-progress li:nth-child(2).is-current span {
    box-shadow: 0 0 0 5px rgba(15, 118, 110, 0.12);
}

.factoring-polynomials-page .factoring-polynomials-progress li:nth-child(3).is-current span {
    box-shadow: 0 0 0 5px rgba(37, 99, 235, 0.12);
}

.factoring-polynomials-page .factoring-polynomials-progress li:nth-child(3).is-current {
    color: var(--clt-blue);
}

.factoring-polynomials-page .factoring-polynomials-progress li:nth-child(3).is-current span {
    border-color: var(--clt-blue);
    background: var(--clt-blue);
}


/* =========================================================
   Mobile Refinements for Two Operations
   ========================================================= */

@media (max-width: 767.98px) {
    .factoring-polynomials-page .factoring-polynomials-intermediate-equation {
        font-size: clamp(1.3rem, 7vw, 1.9rem);
    }

    .factoring-polynomials-page .factoring-polynomials-balance-display {
        gap: 0.8rem;
    }
}

@media (max-width: 575.98px) {
    .factoring-polynomials-page .factoring-polynomials-solution-row {
        width: 100%;
    }

    .factoring-polynomials-page .factoring-polynomials-solution-row .form-control {
        min-width: 0;
    }

    .factoring-polynomials-page .equation-fraction {
        margin-right: 0.08em;
        margin-left: 0.08em;
    }
}

/* =========================================================
   Combining Like Terms — Tool-Specific Additions
   ========================================================= */

.factoring-polynomials-page .factoring-polynomials-problem-expression {
    font-variant-numeric: tabular-nums;
    white-space: normal;
}

.factoring-polynomials-page .factoring-polynomials-step-problem-panel
.factoring-polynomials-problem-expression {
    overflow-wrap: normal;
    word-break: normal;
}


/* =========================================================
   Variable Group Inputs
   ========================================================= */

.factoring-polynomials-variable-inputs {
    display: grid;
    gap: 0.9rem;
    margin: 1.4rem 0;
}

.factoring-polynomials-variable-input-row {
    display: grid;
    grid-template-columns:
        minmax(0, 1fr)
        auto
        minmax(90px, 130px)
        auto;
    gap: 0.75rem;
    align-items: center;
    border: 1px solid var(--clt-teal-border);
    border-radius: 0.9rem;
    background: var(--clt-teal-light);
    padding: 1rem 1.1rem;
}

.factoring-polynomials-variable-input-row > span:first-child {
    color: var(--clt-ink);
    font-size: clamp(1.2rem, 4vw, 1.65rem);
    font-weight: 800;
    text-align: center;
}

.factoring-polynomials-variable-input-row > span:nth-child(2),
.factoring-polynomials-variable-input-row > span:last-child {
    color: var(--clt-teal);
    font-size: 1.5rem;
    font-weight: 800;
}

.factoring-polynomials-variable-input-row .form-control {
    min-width: 0;
}


/* =========================================================
   Constant Combining Row
   ========================================================= */

.factoring-polynomials-constant-row {
    display: grid;
    grid-template-columns:
        minmax(0, 1fr)
        auto
        minmax(100px, 150px);
    gap: 0.8rem;
    align-items: center;
    max-width: 620px;
    margin: 1.5rem auto;
    border: 1px solid var(--clt-teal-border);
    border-radius: 0.9rem;
    background: var(--clt-teal-light);
    padding: 1rem 1.15rem;
}

.factoring-polynomials-constant-row > span:first-child {
    color: var(--clt-ink);
    font-size: clamp(1.3rem, 4vw, 1.8rem);
    font-weight: 800;
    text-align: center;
}

.factoring-polynomials-constant-row > span:nth-child(2) {
    color: var(--clt-teal);
    font-size: 1.6rem;
    font-weight: 800;
}


/* =========================================================
   Verification Values
   ========================================================= */

.factoring-polynomials-verification-values {
    width: fit-content;
    max-width: 100%;
    margin: 1.25rem auto;
    border: 1px solid var(--clt-blue-border);
    border-radius: 999px;
    background: var(--clt-blue-light);
    color: var(--clt-blue);
    padding: 0.65rem 1rem;
    font-size: 1rem;
    font-weight: 800;
}

.factoring-polynomials-check-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
    margin: 1.5rem 0;
}

.factoring-polynomials-check-entry {
    display: grid;
    gap: 0.55rem;
    border: 1px solid var(--clt-border);
    border-radius: 0.9rem;
    background: #ffffff;
    padding: 1rem;
}

.factoring-polynomials-check-entry > span {
    color: #334155;
    font-size: 0.9rem;
    font-weight: 800;
    text-align: center;
}


/* =========================================================
   Expression Progression Emphasis
   ========================================================= */

.factoring-polynomials-step-card.is-active
.factoring-polynomials-step-problem-panel {
    border-color: var(--clt-teal-border);
    box-shadow: 0 0 0 2px rgba(15, 118, 110, 0.06);
}

.factoring-polynomials-step-card.is-complete
.factoring-polynomials-step-problem-panel,
.factoring-polynomials-step-card.completed
.factoring-polynomials-step-problem-panel {
    border-color: var(--clt-green-border);
}

.factoring-polynomials-step-card[aria-disabled="true"]
.factoring-polynomials-step-problem-panel {
    filter: none;
}


/* =========================================================
   Term Highlighting Hooks for JavaScript
   ========================================================= */

.factoring-polynomials-term {
    display: inline-flex;
    align-items: center;
    border-radius: 0.45rem;
    padding: 0.08em 0.14em;
    transition:
        background 0.2s ease,
        color 0.2s ease,
        box-shadow 0.2s ease;
}

.factoring-polynomials-term.is-like-term {
    background: #ccfbf1;
    color: var(--clt-teal-dark);
    box-shadow: inset 0 0 0 1px var(--clt-teal-border);
}

.factoring-polynomials-term.is-constant-term {
    background: #eff6ff;
    color: var(--clt-blue);
    box-shadow: inset 0 0 0 1px var(--clt-blue-border);
}

.factoring-polynomials-term.is-combined-term {
    background: var(--clt-green-light);
    color: var(--clt-green);
    box-shadow: inset 0 0 0 1px var(--clt-green-border);
}


/* =========================================================
   Choice Buttons for Term Pairs
   ========================================================= */

.factoring-polynomials-choice-grid .choice-button {
    min-height: 4.5rem;
}

.factoring-polynomials-choice-grid .choice-button .choice-expression {
    display: block;
    font-size: 1.1rem;
    font-weight: 800;
}


/* =========================================================
   Calculation Trail
   ========================================================= */

.factoring-polynomials-calculation-trail {
    justify-content: center;
}

.factoring-polynomials-calculation-trail .calculation-step {
    font-variant-numeric: tabular-nums;
}


/* =========================================================
   Final Answer
   ========================================================= */

.factoring-polynomials-final-answer {
    overflow-wrap: normal;
    word-break: normal;
}


/* =========================================================
   Responsive Refinements
   ========================================================= */

@media (max-width: 767.98px) {
    .factoring-polynomials-check-grid {
        grid-template-columns: 1fr;
    }

    .factoring-polynomials-variable-input-row {
        grid-template-columns:
            minmax(0, 1fr)
            auto
            minmax(85px, 120px)
            auto;
    }
}

@media (max-width: 575.98px) {
    .factoring-polynomials-variable-input-row {
        grid-template-columns: 1fr auto minmax(80px, 105px) auto;
        gap: 0.55rem;
        padding: 0.85rem;
    }

    .factoring-polynomials-variable-input-row > span:first-child {
        grid-column: 1 / -1;
        text-align: left;
    }

    .factoring-polynomials-constant-row {
        grid-template-columns: 1fr auto minmax(85px, 110px);
        padding: 0.9rem;
    }

    .factoring-polynomials-verification-values {
        border-radius: 0.75rem;
        text-align: center;
    }
}


/* =========================================================
   Reduced Motion
   ========================================================= */

@media (prefers-reduced-motion: reduce) {
    .factoring-polynomials-term {
        transition: none;
    }
}

.factoring-polynomials-progress {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

/* =========================================================
   NEW HANDS-ON SIMPLIFICATION WORKSPACE
   Paste at the bottom of factoring-polynomials.css
   ========================================================= */


/* =========================================================
   Progress Summary
   ========================================================= */

.factoring-polynomials-page
.factoring-polynomials-progress-summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-top: 1.5rem;
    padding: 0.9rem 1rem;
    border: 1px solid var(--clt-teal-border);
    border-radius: 0.85rem;
    background: var(--clt-teal-light);
    color: var(--clt-teal-dark);
    font-size: 0.92rem;
    font-weight: 600;
}

.factoring-polynomials-page
.factoring-polynomials-progress-summary #stepCount {
    flex: 0 0 auto;
    color: var(--clt-ink);
    font-weight: 800;
}


/* =========================================================
   Main Workspace
   ========================================================= */

.factoring-polynomials-page
.factoring-polynomials-workspace {
    display: grid;
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.factoring-polynomials-page
#factoringCard {
    border: 2px solid var(--clt-teal-border);
    background: #ffffff;
    box-shadow: 0 14px 34px rgba(15, 118, 110, 0.1);
}

.factoring-polynomials-page
#factoringCard.is-active {
    border-color: var(--clt-teal);
}


/* =========================================================
   Step Heading
   ========================================================= */

.factoring-polynomials-page
#factoringCard
.factoring-polynomials-step-heading {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.factoring-polynomials-page
#factoringCard
.factoring-polynomials-work-step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.75rem;
    height: 2.75rem;
    border-radius: 50%;
    background: var(--clt-teal);
    color: #ffffff;
    font-size: 1.15rem;
    font-weight: 800;
    line-height: 1;
}

.factoring-polynomials-page
#factoringCard
.factoring-polynomials-card-label {
    margin: 0 0 0.25rem;
    color: var(--clt-teal-dark);
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    line-height: 1.3;
    text-transform: uppercase;
}

.factoring-polynomials-page
#factoringCard
.factoring-polynomials-step-heading h3 {
    margin: 0;
    color: var(--clt-ink);
    font-size: clamp(1.15rem, 2vw, 1.45rem);
    font-weight: 800;
    line-height: 1.3;
}

.factoring-polynomials-page
#factoringStatus {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 2rem;
    padding: 0.35rem 0.7rem;
    border: 1px solid var(--clt-teal-border);
    border-radius: 999px;
    background: var(--clt-teal-light);
    color: var(--clt-teal-dark);
    font-size: 0.78rem;
    font-weight: 800;
    white-space: nowrap;
}


/* =========================================================
   Current Expression
   ========================================================= */

.factoring-polynomials-page
.factoring-polynomials-current-work {
    margin-bottom: 1.25rem;
    padding: 1.25rem;
    border: 1px solid var(--clt-border);
    border-radius: 1rem;
    background: var(--clt-soft);
    text-align: center;
}

.factoring-polynomials-page
.factoring-polynomials-current-work-label {
    margin: 0 0 0.65rem;
    color: var(--clt-muted);
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.factoring-polynomials-page
.factoring-polynomials-current-expression {
    overflow-wrap: anywhere;
    color: var(--clt-ink);
    font-size: clamp(1.55rem, 4vw, 2.35rem);
    font-weight: 800;
    line-height: 1.35;
}


/* =========================================================
   Step History
   ========================================================= */

.factoring-polynomials-page
.factoring-polynomials-step-history {
    display: grid;
    gap: 0.7rem;
    margin-bottom: 1.4rem;
}

.factoring-polynomials-page
.factoring-polynomials-history-item {
    display: grid;
    grid-template-columns: minmax(4.5rem, auto) minmax(0, 1fr);
    align-items: center;
    gap: 1rem;
    padding: 0.9rem 1rem;
    border: 1px solid var(--clt-border);
    border-radius: 0.85rem;
    background: #ffffff;
}

.factoring-polynomials-page
.factoring-polynomials-history-item span {
    color: var(--clt-muted);
    font-size: 0.8rem;
    font-weight: 800;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.factoring-polynomials-page
.factoring-polynomials-history-item strong {
    min-width: 0;
    overflow-wrap: anywhere;
    color: var(--clt-ink);
    font-size: 1.12rem;
    font-weight: 700;
    line-height: 1.4;
}

.factoring-polynomials-page
.factoring-polynomials-history-item.is-starting-expression {
    border-left: 4px solid var(--clt-blue);
    background: var(--clt-blue-light);
}

.factoring-polynomials-page
.factoring-polynomials-history-item.is-correct-step {
    border-left: 4px solid var(--clt-green);
    background: var(--clt-green-light);
}


/* =========================================================
   Expression Entry Form
   ========================================================= */

.factoring-polynomials-page
.factoring-polynomials-step-form {
    margin-top: 1.25rem;
}

.factoring-polynomials-page
.factoring-polynomials-step-form > label {
    display: block;
    margin-bottom: 0.65rem;
    color: var(--clt-ink);
    font-size: 0.98rem;
    font-weight: 700;
    line-height: 1.45;
}

.factoring-polynomials-page
.factoring-polynomials-entry-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: stretch;
    gap: 0.75rem;
}

.factoring-polynomials-page
#stepInput {
    min-width: 0;
    min-height: 3.25rem;
    padding: 0.75rem 1rem;
    border: 2px solid var(--clt-border);
    border-radius: 0.75rem;
    background: #ffffff;
    color: var(--clt-ink);
    font-size: 1.1rem;
    font-weight: 600;
    line-height: 1.4;
    box-shadow: none;
    transition:
        border-color 0.2s ease,
        box-shadow 0.2s ease,
        background-color 0.2s ease;
}

.factoring-polynomials-page
#stepInput::placeholder {
    color: #8a94a3;
    font-weight: 500;
    opacity: 1;
}

.factoring-polynomials-page
#stepInput:focus {
    border-color: var(--clt-teal);
    outline: none;
    box-shadow: 0 0 0 0.23rem rgba(15, 118, 110, 0.14);
}

.factoring-polynomials-page
#stepInput.is-correct {
    border-color: var(--clt-green);
    background: var(--clt-green-light);
    box-shadow: 0 0 0 0.2rem rgba(21, 128, 61, 0.12);
}

.factoring-polynomials-page
#stepInput.is-incorrect {
    border-color: var(--clt-red);
    background: var(--clt-red-light);
    box-shadow: 0 0 0 0.2rem rgba(220, 38, 38, 0.1);
}

.factoring-polynomials-page
#checkStepButton {
    min-width: 8.5rem;
    min-height: 3.25rem;
    padding-right: 1.15rem;
    padding-left: 1.15rem;
    border-radius: 0.75rem;
    white-space: nowrap;
}

.factoring-polynomials-page
.factoring-polynomials-input-help {
    margin: 0.65rem 0 0;
    color: var(--clt-muted);
    font-size: 0.86rem;
    line-height: 1.5;
}


/* =========================================================
   Feedback States
   ========================================================= */

.factoring-polynomials-page
#stepFeedback {
    display: block;
    margin-top: 1rem;
    padding: 0.9rem 1rem;
    border: 1px solid var(--clt-border);
    border-radius: 0.8rem;
    background: var(--clt-soft);
    color: var(--clt-text);
    font-size: 0.93rem;
    font-weight: 600;
    line-height: 1.55;
}

.factoring-polynomials-page
#stepFeedback.is-neutral {
    border-color: var(--clt-border);
    background: var(--clt-soft);
    color: var(--clt-text);
}

.factoring-polynomials-page
#stepFeedback.is-correct {
    border-color: var(--clt-green-border);
    background: var(--clt-green-light);
    color: var(--clt-green);
}

.factoring-polynomials-page
#stepFeedback.is-incorrect {
    border-color: var(--clt-red-border);
    background: var(--clt-red-light);
    color: var(--clt-red);
}

.factoring-polynomials-page
#stepFeedback.is-warning {
    border-color: var(--clt-amber-border);
    background: var(--clt-amber-light);
    color: var(--clt-amber);
}


/* =========================================================
   Hint Area
   ========================================================= */

.factoring-polynomials-page
#factoringCard
.factoring-polynomials-step-actions {
    display: flex;
    justify-content: flex-start;
    margin-top: 1rem;
}

.factoring-polynomials-page
#hintPanel {
    margin-top: 0.85rem;
    padding: 1rem;
    border: 1px solid var(--clt-amber-border);
    border-radius: 0.8rem;
    background: var(--clt-amber-light);
    color: var(--clt-amber);
    font-size: 0.92rem;
    font-weight: 600;
    line-height: 1.55;
}


/* =========================================================
   Completed Work
   ========================================================= */

.factoring-polynomials-page
.factoring-polynomials-completed-work {
    display: grid;
    gap: 0.7rem;
    margin-top: 1.25rem;
}

.factoring-polynomials-page
.factoring-polynomials-completed-work-row {
    display: grid;
    grid-template-columns: minmax(4.5rem, auto) minmax(0, 1fr);
    align-items: center;
    gap: 1rem;
    padding: 0.9rem 1rem;
    border: 1px solid var(--clt-green-border);
    border-radius: 0.8rem;
    background: var(--clt-green-light);
    text-align: left;
}

.factoring-polynomials-page
.factoring-polynomials-completed-work-row span {
    color: var(--clt-green);
    font-size: 0.8rem;
    font-weight: 800;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.factoring-polynomials-page
.factoring-polynomials-completed-work-row strong {
    min-width: 0;
    overflow-wrap: anywhere;
    color: var(--clt-ink);
    font-size: 1.08rem;
    line-height: 1.4;
}


/* =========================================================
   Animations Used by the New JavaScript
   ========================================================= */

@keyframes factoring-polynomials-feedback-pop {
    0% {
        opacity: 0.4;
        transform: translateY(4px);
    }

    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes factoring-polynomials-input-shake {
    0%,
    100% {
        transform: translateX(0);
    }

    25% {
        transform: translateX(-5px);
    }

    50% {
        transform: translateX(5px);
    }

    75% {
        transform: translateX(-3px);
    }
}

@keyframes factoring-polynomials-expression-pop {
    0% {
        opacity: 0.5;
        transform: scale(0.97);
    }

    100% {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes factoring-polynomials-history-pop {
    0% {
        opacity: 0;
        transform: translateY(-6px);
    }

    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes factoring-polynomials-hint-pop {
    0% {
        opacity: 0;
        transform: translateY(-4px);
    }

    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

.factoring-polynomials-page
.factoring-polynomials-feedback-pop {
    animation: factoring-polynomials-feedback-pop 0.35s ease;
}

.factoring-polynomials-page
.factoring-polynomials-input-shake {
    animation: factoring-polynomials-input-shake 0.32s ease;
}

.factoring-polynomials-page
.factoring-polynomials-expression-pop {
    animation: factoring-polynomials-expression-pop 0.35s ease;
}

.factoring-polynomials-page
.factoring-polynomials-history-pop {
    animation: factoring-polynomials-history-pop 0.35s ease;
}

.factoring-polynomials-page
.factoring-polynomials-hint-pop {
    animation: factoring-polynomials-hint-pop 0.3s ease;
}


/* =========================================================
   Tablet and Mobile
   ========================================================= */

@media (max-width: 767.98px) {
    .factoring-polynomials-page
    .factoring-polynomials-progress-summary {
        align-items: flex-start;
        flex-direction: column;
        gap: 0.35rem;
    }

    .factoring-polynomials-page
    #factoringCard
    .factoring-polynomials-step-heading {
        grid-template-columns: auto minmax(0, 1fr);
    }

    .factoring-polynomials-page
    #factoringStatus {
        grid-column: 1 / -1;
        justify-self: flex-start;
        margin-top: 0.15rem;
    }

    .factoring-polynomials-page
    .factoring-polynomials-current-work {
        padding: 1rem 0.8rem;
    }

    .factoring-polynomials-page
    .factoring-polynomials-current-expression {
        font-size: clamp(1.4rem, 7vw, 1.9rem);
    }

    .factoring-polynomials-page
    .factoring-polynomials-entry-row {
        grid-template-columns: minmax(0, 1fr);
    }

    .factoring-polynomials-page
    #checkStepButton {
        width: 100%;
    }

    .factoring-polynomials-page
    .factoring-polynomials-history-item,
    .factoring-polynomials-page
    .factoring-polynomials-completed-work-row {
        grid-template-columns: minmax(0, 1fr);
        gap: 0.3rem;
    }
}


/* =========================================================
   Small Mobile
   ========================================================= */

@media (max-width: 575.98px) {
    .factoring-polynomials-page
    #factoringCard {
        padding: 1rem;
        border-radius: 0.9rem;
    }

    .factoring-polynomials-page
    #factoringCard
    .factoring-polynomials-step-heading {
        gap: 0.75rem;
        margin-bottom: 1.1rem;
    }

    .factoring-polynomials-page
    #factoringCard
    .factoring-polynomials-work-step-number {
        width: 2.35rem;
        height: 2.35rem;
        font-size: 1rem;
    }

    .factoring-polynomials-page
    #factoringCard
    .factoring-polynomials-step-heading h3 {
        font-size: 1.1rem;
    }

    .factoring-polynomials-page
    .factoring-polynomials-current-work {
        margin-bottom: 1rem;
        border-radius: 0.8rem;
    }

    .factoring-polynomials-page
    .factoring-polynomials-current-expression {
        font-size: 1.45rem;
        line-height: 1.45;
    }

    .factoring-polynomials-page
    .factoring-polynomials-history-item {
        padding: 0.8rem;
    }

    .factoring-polynomials-page
    .factoring-polynomials-history-item strong {
        font-size: 1rem;
    }

    .factoring-polynomials-page
    #stepInput {
        min-height: 3.15rem;
        font-size: 1rem;
    }

    .factoring-polynomials-page
    #stepFeedback,
    .factoring-polynomials-page
    #hintPanel {
        padding: 0.8rem;
        font-size: 0.88rem;
    }

    .factoring-polynomials-page
    #factoringCard
    .factoring-polynomials-hint-button {
        width: 100%;
        justify-content: center;
    }
}


/* =========================================================
   Reduced Motion
   ========================================================= */

@media (prefers-reduced-motion: reduce) {
    .factoring-polynomials-page
    .factoring-polynomials-feedback-pop,

    .factoring-polynomials-page
    .factoring-polynomials-input-shake,

    .factoring-polynomials-page
    .factoring-polynomials-expression-pop,

    .factoring-polynomials-page
    .factoring-polynomials-history-pop,

    .factoring-polynomials-page
    .factoring-polynomials-hint-pop {
        animation: none !important;
    }
}

/* =========================================================
   MOBILE USABILITY REFINEMENTS
   Combining Like Terms
   ========================================================= */

@media (max-width: 575.98px) {

    /* ---------------------------------------------------------
       Reduce general practice-section spacing
       --------------------------------------------------------- */

    .factoring-polynomials-page
    .factoring-polynomials-practice-section {
        padding-top: 2.5rem;
        padding-bottom: 2.5rem;
    }

    .factoring-polynomials-page
    .factoring-polynomials-practice-shell,
    .factoring-polynomials-page
    .factoring-polynomials-practice-card {
        padding-right: 0.75rem;
        padding-left: 0.75rem;
    }


    /* ---------------------------------------------------------
       Main problem panel
       --------------------------------------------------------- */

    .factoring-polynomials-page
    #mainProblemPanel {
        padding: 1.25rem 0.85rem;
    }

    .factoring-polynomials-page
    #mainProblemPanel
    .factoring-polynomials-problem-header {
        justify-content: center;
        gap: 0.65rem;
        margin-bottom: 1rem;
    }

    .factoring-polynomials-page
    #mainProblemPanel
    .factoring-polynomials-problem-label {
        font-size: 0.8rem;
    }

    .factoring-polynomials-page
    #difficultyBadge {
        padding: 0.35rem 0.7rem;
        font-size: 0.75rem;
    }

    .factoring-polynomials-page
    #problemInstruction {
        margin-bottom: 1rem;
        font-size: 1rem;
        line-height: 1.55;
    }

    .factoring-polynomials-page
    #problemExpression {
        padding: 1rem 0.7rem;
        font-size: 1.55rem;
        line-height: 1.35;
        overflow-wrap: normal;
        word-break: normal;
    }

    .factoring-polynomials-page
    #problemRelationship {
        margin-top: 1rem;
        font-size: 0.93rem;
        line-height: 1.55;
    }

    .factoring-polynomials-page
    .factoring-polynomials-progress-summary {
        gap: 0.35rem;
        margin-top: 1rem;
        padding: 0.8rem;
        text-align: left;
    }

    .factoring-polynomials-page
    .factoring-polynomials-progress-summary span {
        width: 100%;
    }


    /* ---------------------------------------------------------
       Workspace outer card
       --------------------------------------------------------- */

    .factoring-polynomials-page
    .factoring-polynomials-workspace {
        gap: 1rem;
        margin-top: 1rem;
    }

    .factoring-polynomials-page
    #factoringCard {
        padding: 1rem 0.75rem;
        border-width: 2px;
        border-radius: 0.85rem;
    }


    /* ---------------------------------------------------------
       Compact workspace heading
       --------------------------------------------------------- */

    .factoring-polynomials-page
    #factoringCard
    .factoring-polynomials-step-heading {
        display: grid;
        grid-template-columns: 2.3rem minmax(0, 1fr);
        gap: 0.7rem;
        margin-bottom: 1rem;
    }

    .factoring-polynomials-page
    #factoringCard
    .factoring-polynomials-work-step-number {
        width: 2.3rem;
        height: 2.3rem;
        align-self: start;
        font-size: 0.95rem;
    }

    .factoring-polynomials-page
    #factoringCard
    .factoring-polynomials-card-label {
        margin-bottom: 0.15rem;
        font-size: 0.7rem;
        line-height: 1.25;
    }

    .factoring-polynomials-page
    #factoringCard
    .factoring-polynomials-step-heading h3 {
        font-size: 1.12rem;
        line-height: 1.3;
    }

    .factoring-polynomials-page
    #factoringStatus {
        grid-column: 1 / -1;
        min-height: auto;
        margin-top: 0;
        padding: 0.3rem 0.65rem;
        font-size: 0.7rem;
    }


    /* ---------------------------------------------------------
       Current expression panel
       --------------------------------------------------------- */

    .factoring-polynomials-page
    .factoring-polynomials-current-work {
        margin-bottom: 0.85rem;
        padding: 0.85rem 0.65rem;
        border-radius: 0.75rem;
    }

    .factoring-polynomials-page
    .factoring-polynomials-current-work-label {
        margin-bottom: 0.45rem;
        font-size: 0.7rem;
    }

    .factoring-polynomials-page
    .factoring-polynomials-current-expression {
        font-size: 1.35rem;
        line-height: 1.4;
        overflow-wrap: normal;
        word-break: normal;
    }


    /* ---------------------------------------------------------
       Active step history
       --------------------------------------------------------- */

    .factoring-polynomials-page
    .factoring-polynomials-step-history {
        gap: 0.5rem;
        margin-bottom: 1rem;
    }

    .factoring-polynomials-page
    .factoring-polynomials-history-item {
        gap: 0.2rem;
        padding: 0.7rem 0.75rem;
        border-radius: 0.7rem;
    }

    .factoring-polynomials-page
    .factoring-polynomials-history-item span {
        font-size: 0.68rem;
    }

    .factoring-polynomials-page
    .factoring-polynomials-history-item strong {
        font-size: 0.95rem;
        line-height: 1.4;
    }


    /* ---------------------------------------------------------
       Input area
       --------------------------------------------------------- */

    .factoring-polynomials-page
    .factoring-polynomials-step-form {
        margin-top: 0.9rem;
    }

    .factoring-polynomials-page
    .factoring-polynomials-step-form > label {
        margin-bottom: 0.5rem;
        font-size: 0.92rem;
        line-height: 1.4;
    }

    .factoring-polynomials-page
    .factoring-polynomials-entry-row {
        gap: 0.55rem;
    }

    .factoring-polynomials-page
    #stepInput {
        min-height: 3rem;
        padding: 0.65rem 0.75rem;
        font-size: 0.95rem;
        text-align: left;
    }

    .factoring-polynomials-page
    #stepInput::placeholder {
        font-size: 0.9rem;
    }

    .factoring-polynomials-page
    #checkStepButton {
        min-height: 3rem;
        padding: 0.65rem 0.9rem;
    }

    .factoring-polynomials-page
    .factoring-polynomials-input-help {
        margin-top: 0.5rem;
        font-size: 0.78rem;
        line-height: 1.45;
    }


    /* ---------------------------------------------------------
       Feedback and hint
       --------------------------------------------------------- */

    .factoring-polynomials-page
    #stepFeedback {
        margin-top: 0.75rem;
        padding: 0.7rem 0.75rem;
        font-size: 0.82rem;
        line-height: 1.5;
    }

    .factoring-polynomials-page
    #factoringCard
    .factoring-polynomials-step-actions {
        margin-top: 0.75rem;
    }

    .factoring-polynomials-page
    #hintPanel {
        margin-top: 0.65rem;
        padding: 0.7rem 0.75rem;
        font-size: 0.82rem;
    }


    /* ---------------------------------------------------------
       Completion panel
       --------------------------------------------------------- */

    .factoring-polynomials-page
    #completionCard {
        padding: 1.25rem 0.75rem;
    }

    .factoring-polynomials-page
    #completionCard
    .factoring-polynomials-completion-icon {
        width: 2.75rem;
        height: 2.75rem;
        margin-bottom: 0.75rem;
        font-size: 1.25rem;
    }

    .factoring-polynomials-page
    #completionCard h3 {
        margin-bottom: 0.65rem;
        font-size: 1.35rem;
    }

    .factoring-polynomials-page
    .factoring-polynomials-final-answer {
        padding: 0.8rem;
        font-size: 1.45rem;
        line-height: 1.35;
    }

    .factoring-polynomials-page
    .factoring-polynomials-completion-explanation {
        margin-top: 0.75rem;
        font-size: 0.92rem;
        line-height: 1.5;
    }


    /* ---------------------------------------------------------
       Full-width compact completed steps
       --------------------------------------------------------- */

    .factoring-polynomials-page
    .factoring-polynomials-completed-work {
        width: 100%;
        max-width: none;
        gap: 0.55rem;
        margin: 1rem 0;
        padding: 0;
    }

    .factoring-polynomials-page
    .factoring-polynomials-completed-work-row {
        width: 100%;
        max-width: none;
        gap: 0.2rem;
        margin: 0;
        padding: 0.7rem 0.75rem;
        border-radius: 0.7rem;
    }

    .factoring-polynomials-page
    .factoring-polynomials-completed-work-row span {
        font-size: 0.68rem;
    }

    .factoring-polynomials-page
    .factoring-polynomials-completed-work-row strong {
        font-size: 0.95rem;
        line-height: 1.4;
    }

    .factoring-polynomials-page
    #nextProblemButton {
        width: 100%;
        margin-top: 0.25rem;
    }
}
/* =========================================================
   Factoring Verification Panel
   ========================================================= */

.factoring-polynomials-verification {
    width: 100%;
    max-width: 720px;
    margin: 1.5rem auto 0;
    border: 1px solid var(--clt-teal-border);
    border-radius: 1rem;
    background: var(--clt-teal-light);
    padding: 1.25rem;
    text-align: left;
}

.factoring-polynomials-verification[hidden] {
    display: none;
}

.factoring-polynomials-verification .factoring-polynomials-card-label {
    margin-bottom: 0.65rem;
    color: var(--clt-teal-dark);
}

#verificationDisplay {
    color: var(--clt-ink);
    font-size: clamp(1.05rem, 3vw, 1.3rem);
    font-weight: 700;
    line-height: 1.7;
    text-align: center;
}

.factoring-polynomials-step-form #stepInput {
    font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    letter-spacing: 0.01em;
}

.factoring-polynomials-step-form #stepInput:disabled {
    cursor: not-allowed;
    background: #f1f5f9;
    color: var(--clt-muted);
    opacity: 1;
}

.factoring-polynomials-history-item strong {
    overflow-wrap: anywhere;
}

.factoring-polynomials-history-item.is-number-pair strong {
    color: var(--clt-blue);
}

.factoring-polynomials-history-item.is-factoring-step strong {
    color: var(--clt-teal-dark);
}

.factoring-polynomials-history-item.is-final-factorization {
    border-color: var(--clt-green-border);
    background: var(--clt-green-light);
}

.factoring-polynomials-history-item.is-final-factorization strong {
    color: var(--clt-green);
}

@media (max-width: 575.98px) {
    .factoring-polynomials-verification {
        margin-top: 1.15rem;
        border-radius: 0.85rem;
        padding: 1rem;
    }

    #verificationDisplay {
        font-size: 1rem;
        line-height: 1.6;
    }

    .factoring-polynomials-history-item strong {
        font-size: 0.95rem;
        line-height: 1.55;
    }
}