/* =========================================================
   Fraction Multiplication and Division Practice
   File:
   /fraction-multiplication-division/
   fraction-multiplication-division.css
   ========================================================= */

.fraction-multiplication-division-page {
    font-family: "Inter", sans-serif;
    background: #ffffff;
    color: #1f2937;
}

.fraction-multiplication-division-page *,
.fraction-multiplication-division-page *::before,
.fraction-multiplication-division-page *::after {
    box-sizing: border-box;
}


/* =========================================================
   Shared section styles
   ========================================================= */

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

.fraction-overview,
.fraction-reminders {
    background: #f7f9fc;
}

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

.fraction-section-heading {
    max-width: 760px;
    margin: 0 auto 2.25rem;
    text-align: center;
}

.fraction-section-heading h2 {
    margin-bottom: 1rem;
    color: #101827;
    font-size: clamp(1.75rem, 3vw, 2.4rem);
    font-weight: 800;
}

.fraction-section-heading > p:last-child {
    margin-bottom: 0;
    color: #5b6678;
    font-size: 1.05rem;
    line-height: 1.75;
}

.fraction-eyebrow {
    margin-bottom: 0.65rem;
    color: #0f766e;
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}


/* =========================================================
   Overview cards
   ========================================================= */

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

.fraction-overview-card {
    position: relative;
    min-height: 100%;
    border: 1px solid #dce3eb;
    border-radius: 1rem;
    background: #ffffff;
    padding: 1.5rem;
    box-shadow: 0 12px 30px rgba(16, 24, 39, 0.05);
}

.fraction-overview-card h3 {
    margin-bottom: 0.75rem;
    color: #101827;
    font-size: 1.1rem;
    font-weight: 800;
}

.fraction-overview-card p {
    margin-bottom: 0;
    color: #5b6678;
    line-height: 1.65;
}

.fraction-step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.65rem;
    height: 2.65rem;
    margin-bottom: 1rem;
    border-radius: 50%;
    background: #0f766e;
    color: #ffffff;
    font-size: 1rem;
    font-weight: 800;
}


/* =========================================================
   Main tool shell
   ========================================================= */

.fraction-tool {
    max-width: 1050px;
    margin: 0 auto;
    overflow: hidden;
    border: 1px solid #dce3eb;
    border-radius: 1.25rem;
    background: #ffffff;
    box-shadow: 0 22px 55px rgba(16, 24, 39, 0.1);
}

.fraction-tool-header {
    display: flex;
    justify-content: space-between;
    gap: 2rem;
    align-items: center;
    border-bottom: 1px solid #dce3eb;
    background: #101827;
    color: #ffffff;
    padding: 1.75rem 2rem;
}

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

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

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

.fraction-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;
}

.fraction-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;
}

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


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

.fraction-settings {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr)) auto;
    gap: 1rem;
    align-items: end;
    border-bottom: 1px solid #dce3eb;
    background: #f7f9fc;
    padding: 1.5rem 2rem;
}

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

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

.fraction-setting-group .form-select:focus {
    border-color: #0f766e;
    box-shadow: 0 0 0 0.2rem rgba(15, 118, 110, 0.14);
}

#newProblemButton {
    min-height: 3rem;
    white-space: nowrap;
}


/* =========================================================
   Problem display
   ========================================================= */

.fraction-problem-area {
    border-bottom: 1px solid #dce3eb;
    padding: 2.25rem 2rem;
    text-align: center;
}

.fraction-problem-label {
    margin-bottom: 0.8rem;
    color: #657184;
    font-size: 0.85rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.fraction-expression {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    color: #101827;
    font-size: clamp(1.7rem, 5vw, 2.8rem);
    font-weight: 800;
}

.display-fraction {
    display: inline-grid;
    grid-template-rows: auto auto;
    min-width: 3.5rem;
    line-height: 1.05;
    text-align: center;
}

.display-fraction .fraction-numerator {
    border-bottom: 3px solid currentColor;
    padding: 0 0.6rem 0.35rem;
}

.display-fraction .fraction-denominator {
    padding: 0.35rem 0.6rem 0;
}

.fraction-operation {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 2rem;
    color: #0f766e;
    font-size: 1.2em;
    font-weight: 800;
}


/* =========================================================
   Progress indicator
   ========================================================= */

.fraction-progress {
    display: grid;
    grid-template-columns: auto 1fr auto 1fr auto 1fr auto;
    align-items: start;
    gap: 0.65rem;
    border-bottom: 1px solid #dce3eb;
    background: #ffffff;
    padding: 1.5rem 2rem;
}

.fraction-progress-step {
    display: grid;
    justify-items: center;
    gap: 0.45rem;
    min-width: 72px;
    color: #8a95a6;
    text-align: center;
}

.fraction-progress-step span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.25rem;
    height: 2.25rem;
    border: 2px solid #cbd5e1;
    border-radius: 50%;
    background: #ffffff;
    color: #6b7280;
    font-weight: 800;
}

.fraction-progress-step p {
    margin-bottom: 0;
    font-size: 0.78rem;
    font-weight: 700;
}

.fraction-progress-step.active {
    color: #0f766e;
}

.fraction-progress-step.active span {
    border-color: #0f766e;
    background: #0f766e;
    color: #ffffff;
}

.fraction-progress-step.complete {
    color: #166534;
}

.fraction-progress-step.complete span {
    border-color: #16a34a;
    background: #16a34a;
    color: #ffffff;
}

.fraction-progress-line {
    height: 3px;
    margin-top: 1.05rem;
    border-radius: 999px;
    background: #dce3eb;
}

.fraction-progress-line.complete {
    background: #16a34a;
}


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

.fraction-workspace {
    padding: 2rem;
}

.fraction-work-step {
    border: 1px solid #dce3eb;
    border-radius: 1rem;
    background: #ffffff;
    padding: 1.75rem;
}

.fraction-work-step + .fraction-work-step {
    margin-top: 1rem;
}

.fraction-work-step.active {
    border-color: rgba(15, 118, 110, 0.45);
    box-shadow: 0 0 0 4px rgba(15, 118, 110, 0.08);
}

.fraction-work-step.completed {
    background: #f0fdf9;
    border-color: #99d5ce;
}

.fraction-work-label {
    margin-bottom: 0.45rem;
    color: #0f766e;
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.fraction-work-step h3 {
    margin-bottom: 0.65rem;
    color: #101827;
    font-size: 1.3rem;
    font-weight: 800;
}

.fraction-step-instruction {
    margin-bottom: 1.4rem;
    color: #5b6678;
    line-height: 1.7;
}


/* =========================================================
   Fraction inputs
   ========================================================= */

.fraction-rewrite-row {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: end;
    gap: 1.5rem;
    margin-bottom: 1.4rem;
}

.fraction-input-group {
    text-align: center;
}

.fraction-input-group label {
    display: block;
    margin-bottom: 0.65rem;
    color: #4b5563;
    font-size: 0.85rem;
    font-weight: 700;
}

.fraction-input {
    display: inline-grid;
    grid-template-rows: auto 3px auto;
    justify-items: center;
    gap: 0.35rem;
    min-width: 5.25rem;
}

.fraction-input input {
    width: 5.25rem;
    min-height: 3rem;
    border: 1px solid #cbd5e1;
    border-radius: 0.65rem;
    background: #ffffff;
    color: #101827;
    font-size: 1.15rem;
    font-weight: 700;
    text-align: center;
}

.fraction-input input:focus {
    outline: none;
    border-color: #0f766e;
    box-shadow: 0 0 0 0.2rem rgba(15, 118, 110, 0.14);
}

.fraction-input input[readonly],
.fraction-input input:disabled {
    background: #eef2f7;
    color: #536074;
    cursor: default;
}

.fraction-input > span {
    display: block;
    width: 100%;
    height: 3px;
    border-radius: 999px;
    background: #273449;
}

.fraction-input-centered {
    display: grid;
    margin: 0 auto 1.4rem;
}

.fraction-work-step > .btn {
    display: block;
    margin: 0 auto;
}


/* =========================================================
   Whole-number answer state
   ========================================================= */

.fraction-input.fraction-whole-number-answer,
.fraction-input.fraction-zero-answer {
    display: flex;
    justify-content: center;
    align-items: center;
}

.fraction-input.fraction-whole-number-answer input,
.fraction-input.fraction-zero-answer input {
    width: 5.5rem;
}

.fraction-input.fraction-whole-number-answer > span,
.fraction-input.fraction-whole-number-answer #finalDenominator,
.fraction-input.fraction-zero-answer > span,
.fraction-input.fraction-zero-answer #finalDenominator {
    display: none;
}


/* =========================================================
   Feedback and hints
   ========================================================= */

.fraction-feedback {
    margin-top: 1rem;
    border-radius: 0.75rem;
    padding: 1rem 1.15rem;
    font-weight: 700;
    line-height: 1.55;
}

.fraction-feedback.is-success,
.fraction-feedback.success {
    border: 1px solid #86d3c9;
    background: #ecfdf8;
    color: #0f766e;
}

.fraction-feedback.is-error,
.fraction-feedback.error {
    border: 1px solid #fecaca;
    background: #fff1f2;
    color: #b42318;
}

.fraction-feedback.is-info,
.fraction-feedback.info {
    border: 1px solid #bfdbfe;
    background: #eff6ff;
    color: #1d4ed8;
}

.fraction-hint-button {
    display: block;
    margin: 1.25rem auto 0;
    border: 0;
    background: transparent;
    color: #0f766e;
    font-weight: 800;
    text-decoration: underline;
    text-underline-offset: 0.2rem;
}

.fraction-hint-button:hover {
    color: #0b5f59;
}

.fraction-hint {
    max-width: 720px;
    margin: 1rem auto 0;
    border-left: 4px solid #d97706;
    border-radius: 0.75rem;
    background: #fff7ed;
    color: #7c2d12;
    padding: 1rem 1.15rem;
    line-height: 1.65;
}


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

.fraction-completion {
    margin-top: 1.5rem;
    border: 1px solid #86d3c9;
    border-radius: 1rem;
    background: #ecfdf8;
    padding: 2rem;
    text-align: center;
}

.fraction-completion-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 3.5rem;
    height: 3.5rem;
    margin-bottom: 1rem;
    border-radius: 50%;
    background: #0f766e;
    color: #ffffff;
    font-size: 1.5rem;
    font-weight: 800;
}

.fraction-completion h3 {
    margin-bottom: 0.5rem;
    color: #101827;
    font-size: 1.6rem;
    font-weight: 800;
}

.fraction-completion p {
    color: #4b5563;
}

.fraction-final-answer {
    margin: 1rem 0 1.4rem;
    color: #0f766e;
    font-size: 1.6rem;
    font-weight: 800;
}


/* =========================================================
   Reminder cards
   ========================================================= */

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

.fraction-reminder-card {
    border: 1px solid #dce3eb;
    border-radius: 1rem;
    background: #ffffff;
    padding: 1.5rem;
    box-shadow: 0 12px 30px rgba(16, 24, 39, 0.05);
}

.fraction-reminder-card h3 {
    margin-bottom: 0.75rem;
    color: #101827;
    font-size: 1.1rem;
    font-weight: 800;
}

.fraction-reminder-card p {
    color: #5b6678;
    line-height: 1.65;
}

.fraction-example {
    margin-top: 1rem;
    border-radius: 0.75rem;
    background: #101827;
    color: #ffffff;
    padding: 1rem;
    text-align: center;
    font-size: 1.05rem;
    font-weight: 800;
}


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

.fraction-final-cta-card {
    max-width: 900px;
    margin: 0 auto;
    border-radius: 1.25rem;
    background: #101827;
    color: #ffffff;
    padding: 2.5rem;
    text-align: center;
}

.fraction-final-cta-card .fraction-eyebrow {
    color: #5eead4;
}

.fraction-final-cta-card h2 {
    margin-bottom: 1rem;
    color: #ffffff;
    font-size: clamp(1.7rem, 3vw, 2.35rem);
    font-weight: 800;
}

.fraction-final-cta-card p {
    max-width: 700px;
    margin: 0 auto 1.5rem;
    color: rgba(255, 255, 255, 0.8);
    font-size: 1.05rem;
    line-height: 1.75;
}


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

.fraction-multiplication-division-page .btn-teal {
    border-color: #0f766e;
    background: #0f766e;
    color: #ffffff;
}

.fraction-multiplication-division-page .btn-teal:hover,
.fraction-multiplication-division-page .btn-teal:focus {
    border-color: #0b5f59;
    background: #0b5f59;
    color: #ffffff;
}

.fraction-multiplication-division-page .btn-outline-teal {
    border-color: #0f766e;
    color: #0f766e;
}

.fraction-multiplication-division-page .btn-outline-teal:hover,
.fraction-multiplication-division-page .btn-outline-teal:focus {
    border-color: #0f766e;
    background: #0f766e;
    color: #ffffff;
}


/* =========================================================
   Utility and accessibility
   ========================================================= */

.fraction-multiplication-division-page [hidden] {
    display: none !important;
}

.fraction-multiplication-division-page button:focus-visible,
.fraction-multiplication-division-page a:focus-visible,
.fraction-multiplication-division-page input:focus-visible,
.fraction-multiplication-division-page select:focus-visible {
    outline: 3px solid rgba(15, 118, 110, 0.35);
    outline-offset: 2px;
}


/* =========================================================
   Tablet
   ========================================================= */

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

    .fraction-tool-header {
        align-items: flex-start;
        flex-direction: column;
    }

    .fraction-scoreboard {
        width: 100%;
    }

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

    #newProblemButton {
        grid-column: 1 / -1;
        width: 100%;
    }

    .fraction-reminders-grid {
        grid-template-columns: 1fr;
    }
}


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

@media (max-width: 767.98px) {
    .fraction-overview,
    .fraction-practice-section,
    .fraction-reminders,
    .fraction-final-cta {
        padding: 3.5rem 0;
    }

    .fraction-overview-grid {
        grid-template-columns: 1fr;
    }

    .fraction-tool {
        border-radius: 1rem;
    }

    .fraction-tool-header,
    .fraction-settings,
    .fraction-problem-area,
    .fraction-workspace {
        padding-left: 1.2rem;
        padding-right: 1.2rem;
    }

    .fraction-scoreboard {
        grid-template-columns: repeat(3, minmax(0, 1fr));
        gap: 0.5rem;
    }

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

    .fraction-score-label {
        font-size: 0.65rem;
    }

    .fraction-score-item strong {
        font-size: 1.2rem;
    }

    .fraction-settings {
        grid-template-columns: 1fr;
    }

    #newProblemButton {
        grid-column: auto;
    }

    .fraction-expression {
        gap: 0.7rem;
    }

    .fraction-progress {
        grid-template-columns: repeat(4, minmax(0, 1fr));
        gap: 0.35rem;
        padding: 1.25rem 0.75rem;
    }

    .fraction-progress-line {
        display: none;
    }

    .fraction-progress-step {
        min-width: 0;
    }

    .fraction-progress-step p {
        font-size: 0.68rem;
    }

    .fraction-work-step {
        padding: 1.3rem;
    }

    .fraction-rewrite-row {
        align-items: center;
        flex-direction: column;
    }

    .fraction-rewrite-row > .fraction-operation {
        transform: none;
    }

    .fraction-final-cta-card {
        padding: 2rem 1.25rem;
    }
}


/* =========================================================
   Small mobile
   ========================================================= */

@media (max-width: 420px) {
    .fraction-expression {
        font-size: 1.7rem;
    }

    .display-fraction {
        min-width: 2.8rem;
    }

    .fraction-input input {
        width: 4.65rem;
    }

    .fraction-scoreboard {
        grid-template-columns: 1fr;
    }

    .fraction-score-item {
        display: flex;
        justify-content: space-between;
        align-items: center;
        text-align: left;
    }

    .fraction-score-label {
        margin-bottom: 0;
    }
}

.fraction-input-centered {
    display: grid;
    width: fit-content;
    margin: 0 auto 1.4rem;
}

.fraction-operation {
    display: flex;
    align-items: center;
    justify-content: center;

    align-self: center;

    width: 2.5rem;
    height: 6.5rem;

    color: #0f766e;
    font-size: 2rem;
    font-weight: 800;
    line-height: 1;
}

@media (max-width: 767.98px) {

    .fraction-rewrite-row {
        display: grid;
        grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
        align-items: end;
        gap: 0.75rem;
        margin-bottom: 1.4rem;
    }

    .fraction-rewrite-row > .fraction-operation {
        width: auto;
        height: auto;
        align-self: center;
        font-size: 1.65rem;
        transform: translateY(0.9rem);
    }

    .fraction-input-group {
        min-width: 0;
    }

    .fraction-input {
        min-width: 0;
    }

    .fraction-input input {
        width: 4.65rem;
    }

}