/* =========================================================
   Comparing and Ordering Decimals
   Page-specific styles for:
   /interactive-learning-tools/comparing-ordering-decimals/
   ========================================================= */

.comparing-ordering-decimals-page {
    background: #f7f9fc;
    color: #1f2933;
    font-family: "Inter", sans-serif;
}

.comparing-ordering-decimals-page main {
    overflow-x: clip;
    overflow-y: visible;
}

.comparing-ordering-decimals-page *,
.comparing-ordering-decimals-page *::before,
.comparing-ordering-decimals-page *::after {
    box-sizing: border-box;
}

.comparing-ordering-decimals-page [hidden] {
    display: none !important;
}


/* =========================================================
   Shared sections
   ========================================================= */

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

.comparing-ordering-decimals-overview,
.comparing-ordering-decimals-reminders {
    background: #ffffff;
}

.comparing-ordering-decimals-practice-section {
    background:
        radial-gradient(
            circle at top left,
            rgba(20, 184, 166, 0.09),
            transparent 34rem
        ),
        linear-gradient(
            180deg,
            #f7fafc 0%,
            #edf3f7 100%
        );
}

.comparing-ordering-decimals-final-cta {
    background: #f3f7fa;
}

.comparing-ordering-decimals-section-heading {
    max-width: 780px;
    margin: 0 auto 2.5rem;
    text-align: center;
}

.comparing-ordering-decimals-section-heading h2,
.comparing-ordering-decimals-tool-header h2,
.comparing-ordering-decimals-final-cta-card h2 {
    margin-bottom: 1rem;
    color: #101827;
    font-size: clamp(1.8rem, 4vw, 2.55rem);
    font-weight: 800;
    letter-spacing: -0.035em;
}

.comparing-ordering-decimals-section-heading > p:last-child {
    margin: 0;
    color: #5f6c7b;
    font-size: 1.05rem;
    line-height: 1.75;
}

.comparing-ordering-decimals-eyebrow {
    margin-bottom: 0.6rem;
    color: #137f79;
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}


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

.comparing-ordering-decimals-overview-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1rem;
    max-width: 1180px;
    margin: 0 auto;
}

.comparing-ordering-decimals-overview-card {
    min-height: 100%;
    border: 1px solid #dce5eb;
    border-radius: 1.15rem;
    background: #ffffff;
    padding: 1.55rem;
    box-shadow: 0 0.5rem 1.4rem rgba(15, 23, 42, 0.05);
}

.comparing-ordering-decimals-overview-card h3 {
    margin-bottom: 0.7rem;
    color: #17212b;
    font-size: 1.05rem;
    font-weight: 800;
    line-height: 1.35;
}

.comparing-ordering-decimals-overview-card p {
    margin: 0;
    color: #667384;
    font-size: 0.92rem;
    line-height: 1.65;
}

.comparing-ordering-decimals-step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.6rem;
    height: 2.6rem;
    margin-bottom: 1rem;
    border-radius: 0.8rem;
    background: #e8f8f5;
    color: #137f79;
    font-size: 1rem;
    font-weight: 800;
}


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

.comparing-ordering-decimals-tool {
    max-width: 1180px;
    margin: 0 auto;
    overflow: hidden;
    border: 1px solid #d8e2e9;
    border-radius: 1.5rem;
    background: #ffffff;
    box-shadow:
        0 1.7rem 4rem rgba(15, 23, 42, 0.12),
        0 0.4rem 1rem rgba(15, 23, 42, 0.05);
}

.comparing-ordering-decimals-tool-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
    background: #101827;
    color: #ffffff;
    padding: 2rem 2.4rem;
}

.comparing-ordering-decimals-tool-header h2 {
    margin: 0;
    color: #ffffff;
}

.comparing-ordering-decimals-tool-header .comparing-ordering-decimals-eyebrow {
    color: #5eead4;
}


/* =========================================================
   Scoreboard
   ========================================================= */

.comparing-ordering-decimals-scoreboard {
    display: grid;
    grid-template-columns: repeat(3, minmax(90px, 1fr));
    gap: 0.75rem;
    flex-shrink: 0;
}

.comparing-ordering-decimals-score-item {
    min-width: 96px;
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: 0.9rem;
    background: rgba(255, 255, 255, 0.07);
    padding: 0.8rem 1rem;
    text-align: center;
}

.comparing-ordering-decimals-score-label {
    display: block;
    margin-bottom: 0.25rem;
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.7rem;
    font-weight: 800;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.comparing-ordering-decimals-score-item strong {
    color: #ffffff;
    font-size: 1.45rem;
    font-weight: 800;
    font-variant-numeric: tabular-nums;
}


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

.comparing-ordering-decimals-settings {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
    align-items: end;
    border-bottom: 1px solid #dce5eb;
    background: #f6f8fb;
    padding: 1.5rem 2.4rem;
}

.comparing-ordering-decimals-setting-group label {
    display: block;
    margin-bottom: 0.45rem;
    color: #263448;
    font-size: 0.84rem;
    font-weight: 800;
}

.comparing-ordering-decimals-settings .form-select {
    min-height: 3.15rem;
    border: 1px solid #cbd8df;
    border-radius: 0.8rem;
    background-color: #ffffff;
    color: #354154;
    padding-left: 0.9rem;
    font-size: 0.92rem;
    font-weight: 600;
}

.comparing-ordering-decimals-settings .form-select:focus {
    border-color: #13857f;
    box-shadow: 0 0 0 0.22rem rgba(19, 133, 127, 0.13);
}

.comparing-ordering-decimals-setting-actions {
    display: flex;
    grid-column: 1 / -1;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 0.75rem;
    padding-top: 0.25rem;
}

.comparing-ordering-decimals-setting-actions .btn {
    min-height: 3rem;
    white-space: nowrap;
}


/* =========================================================
   Practice mode panels
   ========================================================= */

.comparing-ordering-decimals-mode-panel {
    border-bottom: 1px solid #dce5eb;
    background:
        linear-gradient(
            135deg,
            #f0fcf9 0%,
            #ffffff 70%
        );
    padding: 2.5rem 2.4rem;
}

.comparing-ordering-decimals-problem-header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    margin-bottom: 0.8rem;
}

.comparing-ordering-decimals-problem-label {
    margin: 0;
    color: #137f79;
    font-size: 0.83rem;
    font-weight: 800;
    letter-spacing: 0.09em;
    text-transform: uppercase;
}

.comparing-ordering-decimals-difficulty-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    background: #dbeafe;
    color: #1e40af;
    padding: 0.35rem 0.7rem;
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.comparing-ordering-decimals-difficulty-badge.easy {
    background: #dcfce7;
    color: #166534;
}

.comparing-ordering-decimals-difficulty-badge.medium {
    background: #dbeafe;
    color: #1e40af;
}

.comparing-ordering-decimals-difficulty-badge.hard {
    background: #ffedd5;
    color: #9a3412;
}

.comparing-ordering-decimals-problem-instruction {
    max-width: 720px;
    margin: 0 auto 1.75rem;
    color: #5f6c7b;
    font-size: 1rem;
    font-weight: 600;
    line-height: 1.65;
    text-align: center;
}


/* =========================================================
   Comparison expression
   ========================================================= */

.comparing-ordering-decimals-comparison-expression {
    display: grid;
    grid-template-columns:
        minmax(0, 1fr)
        minmax(90px, auto)
        minmax(0, 1fr);
    gap: 1.2rem;
    align-items: center;
    max-width: 820px;
    margin: 0 auto 2rem;
}

.comparing-ordering-decimals-comparison-value {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 145px;
    border: 2px solid #cfe0e5;
    border-radius: 1.15rem;
    background: #ffffff;
    color: #101827;
    padding: 1.25rem;
    font-size: clamp(2.8rem, 8vw, 5rem);
    font-weight: 800;
    font-variant-numeric: tabular-nums;
    letter-spacing: -0.04em;
    box-shadow: 0 0.6rem 1.4rem rgba(15, 23, 42, 0.06);
}

.comparing-ordering-decimals-symbol-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 82px;
    color: #137f79;
    font-size: clamp(3rem, 8vw, 5rem);
    font-weight: 800;
    line-height: 1;
}


/* =========================================================
   Comparison symbol buttons
   ========================================================= */

.comparing-ordering-decimals-symbol-buttons {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.85rem;
    max-width: 680px;
    margin: 0 auto;
}

.comparing-ordering-decimals-symbol-button {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 105px;
    border: 2px solid #d2dfe5;
    border-radius: 1rem;
    background: #ffffff;
    color: #17212b;
    padding: 0.8rem;
    transition:
        border-color 180ms ease,
        background-color 180ms ease,
        color 180ms ease,
        transform 180ms ease,
        box-shadow 180ms ease;
}

.comparing-ordering-decimals-symbol-button > span {
    font-size: 2.45rem;
    font-weight: 800;
    line-height: 1;
}

.comparing-ordering-decimals-symbol-button small {
    margin-top: 0.45rem;
    color: #697586;
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 0.03em;
    text-transform: uppercase;
}

.comparing-ordering-decimals-symbol-button:hover {
    border-color: #13857f;
    background: #f0fbf9;
    transform: translateY(-2px);
}

.comparing-ordering-decimals-symbol-button:active {
    transform: translateY(0);
}

.comparing-ordering-decimals-symbol-button.is-selected {
    border-color: #13857f;
    background: #e8f8f5;
    color: #116b66;
    box-shadow: 0 0 0 0.25rem rgba(19, 133, 127, 0.1);
}

.comparing-ordering-decimals-symbol-button.is-correct {
    border-color: #16a34a;
    background: #f0fdf4;
    color: #166534;
}

.comparing-ordering-decimals-symbol-button.is-incorrect {
    border-color: #dc2626;
    background: #fef2f2;
    color: #991b1b;
}

.comparing-ordering-decimals-symbol-button:disabled {
    cursor: not-allowed;
    opacity: 0.72;
    transform: none;
}


/* =========================================================
   Ordering mode
   ========================================================= */

.comparing-ordering-decimals-ordering-heading {
    margin: 0 0 0.7rem;
    color: #17212b;
    font-size: clamp(1.45rem, 4vw, 2rem);
    font-weight: 800;
    text-align: center;
}

.comparing-ordering-decimals-ordering-list {
    display: grid;
    gap: 0.7rem;
    max-width: 720px;
    margin: 0 auto;
    padding: 0;
    list-style: none;
}

.comparing-ordering-decimals-ordering-item {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    gap: 1rem;
    align-items: center;
    min-height: 78px;
    border: 2px solid #d5e1e7;
    border-radius: 1rem;
    background: #ffffff;
    padding: 0.75rem 0.85rem;
    cursor: grab;
    box-shadow: 0 0.35rem 0.9rem rgba(15, 23, 42, 0.05);
    transition:
        border-color 180ms ease,
        background-color 180ms ease,
        transform 180ms ease,
        opacity 180ms ease,
        box-shadow 180ms ease;
}

.comparing-ordering-decimals-ordering-item:hover {
    border-color: #80c9c3;
    transform: translateY(-1px);
}

.comparing-ordering-decimals-ordering-item:active {
    cursor: grabbing;
}

.comparing-ordering-decimals-ordering-item:focus-visible {
    border-color: #13857f;
    outline: 3px solid rgba(20, 184, 166, 0.22);
    outline-offset: 2px;
}

.comparing-ordering-decimals-ordering-item strong {
    color: #101827;
    font-size: 1.7rem;
    font-weight: 800;
    font-variant-numeric: tabular-nums;
    text-align: center;
}

.comparing-ordering-decimals-ordering-item.is-dragging {
    opacity: 0.48;
    transform: scale(0.985);
}

.comparing-ordering-decimals-ordering-item.is-drag-over {
    border-color: #13857f;
    background: #effaf8;
    box-shadow: 0 0 0 0.25rem rgba(19, 133, 127, 0.1);
}

.comparing-ordering-decimals-ordering-item.is-correct {
    border-color: #16a34a;
    background: #f0fdf4;
}

.comparing-ordering-decimals-ordering-item.is-incorrect {
    border-color: #dc2626;
    background: #fef2f2;
}

.comparing-ordering-decimals-drag-handle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.6rem;
    height: 2.6rem;
    border-radius: 0.7rem;
    background: #edf4f6;
    color: #64748b;
}

.comparing-ordering-decimals-drag-handle svg {
    width: 1.2rem;
    height: 1.2rem;
}

.comparing-ordering-decimals-order-controls {
    display: flex;
    gap: 0.4rem;
}

.comparing-ordering-decimals-move-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.55rem;
    height: 2.55rem;
    border: 1px solid #cbd8df;
    border-radius: 0.65rem;
    background: #ffffff;
    color: #137f79;
    transition:
        border-color 180ms ease,
        background-color 180ms ease,
        color 180ms ease;
}

.comparing-ordering-decimals-move-button:hover {
    border-color: #13857f;
    background: #e8f8f5;
}

.comparing-ordering-decimals-move-button:disabled {
    cursor: not-allowed;
    color: #94a3b8;
    opacity: 0.5;
}

.comparing-ordering-decimals-move-button svg {
    width: 1.1rem;
    height: 1.1rem;
}

.comparing-ordering-decimals-ordering-actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.75rem;
    margin-top: 1.3rem;
}


/* =========================================================
   Shared feedback
   ========================================================= */

.comparing-ordering-decimals-feedback {
    max-width: 760px;
    margin: 1.25rem auto 0;
    border-radius: 0.85rem;
    padding: 1rem 1.1rem;
    font-size: 0.92rem;
    font-weight: 700;
    line-height: 1.6;
}

.comparing-ordering-decimals-feedback.success {
    border: 1px solid #bbf7d0;
    background: #f0fdf4;
    color: #166534;
}

.comparing-ordering-decimals-feedback.error {
    border: 1px solid #fecaca;
    background: #fef2f2;
    color: #991b1b;
}

.comparing-ordering-decimals-feedback.info {
    border: 1px solid #bfdbfe;
    background: #eff6ff;
    color: #1e40af;
}


/* =========================================================
   Visual workspace
   ========================================================= */

.comparing-ordering-decimals-workspace {
    display: grid;
    gap: 1.25rem;
    padding: 2rem 2.4rem 2.5rem;
}

.comparing-ordering-decimals-place-value-card,
.comparing-ordering-decimals-number-line-card {
    border: 1px solid #d9e4ea;
    border-radius: 1.1rem;
    background: #ffffff;
    padding: 1.6rem;
}

.comparing-ordering-decimals-place-value-card {
    background:
        linear-gradient(
            135deg,
            rgba(232, 248, 245, 0.72),
            #ffffff 68%
        );
}

.comparing-ordering-decimals-number-line-card {
    background: #fbfcfe;
}

.comparing-ordering-decimals-card-heading {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1.5rem;
    margin-bottom: 1rem;
}

.comparing-ordering-decimals-card-heading h3 {
    margin: 0;
    color: #17212b;
    font-size: 1.25rem;
    font-weight: 800;
}

.comparing-ordering-decimals-card-label {
    margin: 0 0 0.35rem;
    color: #137f79;
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.comparing-ordering-decimals-visual-instruction {
    margin: 0;
    color: #637083;
    font-size: 0.9rem;
    line-height: 1.6;
}

.comparing-ordering-decimals-card-heading > .comparing-ordering-decimals-visual-instruction {
    max-width: 360px;
    text-align: right;
}


/* =========================================================
   Place-value legend
   ========================================================= */

.comparing-ordering-decimals-place-legend {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 0.8rem;
    color: #5f6c7b;
    font-size: 0.74rem;
    font-weight: 700;
}

.comparing-ordering-decimals-place-legend > span {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}

.comparing-ordering-decimals-legend-swatch {
    display: inline-block;
    width: 0.9rem;
    height: 0.9rem;
    border-radius: 0.23rem;
}

.comparing-ordering-decimals-legend-swatch.different {
    background: #f59e0b;
}

.comparing-ordering-decimals-legend-swatch.placeholder {
    border: 1px dashed #94a3b8;
    background: #f1f5f9;
}


/* =========================================================
   Place-value table
   ========================================================= */

.comparing-ordering-decimals-table-wrap {
    margin-top: 1.2rem;
    overflow-x: auto;
    border: 1px solid #d8e3e8;
    border-radius: 0.95rem;
    background: #ffffff;
}

.comparing-ordering-decimals-place-value-table {
    width: 100%;
    min-width: 680px;
    margin: 0;
    border-collapse: collapse;
    table-layout: fixed;
}

.comparing-ordering-decimals-place-value-table th,
.comparing-ordering-decimals-place-value-table td {
    border-right: 1px solid #e1e8ed;
    border-bottom: 1px solid #e1e8ed;
    padding: 0.85rem 0.65rem;
    text-align: center;
    vertical-align: middle;
}

.comparing-ordering-decimals-place-value-table th:last-child,
.comparing-ordering-decimals-place-value-table td:last-child {
    border-right: 0;
}

.comparing-ordering-decimals-place-value-table tbody tr:last-child th,
.comparing-ordering-decimals-place-value-table tbody tr:last-child td {
    border-bottom: 0;
}

.comparing-ordering-decimals-place-value-table thead th {
    background: #101827;
    color: #ffffff;
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.comparing-ordering-decimals-place-value-table tbody th {
    background: #f4f7f9;
    color: #17212b;
    font-size: 1rem;
    font-weight: 800;
    font-variant-numeric: tabular-nums;
}

.comparing-ordering-decimals-place-value-table tbody td {
    color: #17212b;
    font-size: 1.45rem;
    font-weight: 800;
    font-variant-numeric: tabular-nums;
}

.comparing-ordering-decimals-place-value-table .decimal-point {
    background: #e8f8f5;
    color: #137f79;
}

.comparing-ordering-decimals-place-value-table .different-place {
    background: #fef3c7;
    color: #a65308;
    box-shadow: inset 0 0 0 2px #f59e0b;
}

.comparing-ordering-decimals-place-value-table .placeholder-zero {
    background: #f1f5f9;
    color: #94a3b8;
    font-style: italic;
}


/* =========================================================
   Number line
   ========================================================= */

.comparing-ordering-decimals-number-line {
    margin-top: 1.2rem;
    border: 1px solid #dce5eb;
    border-radius: 1rem;
    background:
        linear-gradient(
            180deg,
            #ffffff 0%,
            #f7fafc 100%
        );
    padding: 4.7rem 2.2rem 1.4rem;
}

.comparing-ordering-decimals-number-line-track {
    position: relative;
    width: 100%;
    height: 6px;
    border-radius: 999px;
    background: #334155;
}

.comparing-ordering-decimals-number-line-end-tick {
    position: absolute;
    top: 50%;
    width: 3px;
    height: 1.55rem;
    border-radius: 999px;
    background: #334155;
    transform: translate(-50%, -50%);
}

.comparing-ordering-decimals-number-line-end-tick.start {
    left: 0;
}

.comparing-ordering-decimals-number-line-end-tick.end {
    left: 100%;
}

.comparing-ordering-decimals-number-line-markers {
    position: absolute;
    inset: 0;
}

.comparing-ordering-decimals-number-marker {
    position: absolute;
    top: 50%;
    left: var(--marker-position, 50%);
    width: 1.15rem;
    height: 1.15rem;
    border: 3px solid #ffffff;
    border-radius: 50%;
    background: #13857f;
    box-shadow:
        0 0 0 3px rgba(19, 133, 127, 0.18),
        0 0.25rem 0.7rem rgba(15, 23, 42, 0.18);
    transform: translate(-50%, -50%);
    transition: left 300ms ease;
}

.comparing-ordering-decimals-number-marker::after {
    position: absolute;
    bottom: 100%;
    left: 50%;
    width: 2px;
    height: 1.25rem;
    background: currentColor;
    content: "";
    transform: translateX(-50%);
}

.comparing-ordering-decimals-number-marker > span {
    position: absolute;
    bottom: calc(100% + 1.65rem);
    left: 50%;
    border-radius: 0.48rem;
    background: #101827;
    color: #ffffff;
    padding: 0.33rem 0.5rem;
    font-size: 0.7rem;
    font-weight: 800;
    font-variant-numeric: tabular-nums;
    white-space: nowrap;
    transform: translateX(-50%);
}

.comparing-ordering-decimals-number-marker:nth-child(even) > span {
    top: calc(100% + 1.4rem);
    bottom: auto;
}

.comparing-ordering-decimals-number-marker:nth-child(even)::after {
    top: 100%;
    bottom: auto;
}

.comparing-ordering-decimals-number-marker.marker-one {
    background: #13857f;
    color: #13857f;
}

.comparing-ordering-decimals-number-marker.marker-two {
    background: #d97706;
    color: #d97706;
    box-shadow:
        0 0 0 3px rgba(217, 119, 6, 0.18),
        0 0.25rem 0.7rem rgba(15, 23, 42, 0.18);
}

.comparing-ordering-decimals-number-marker.marker-three {
    background: #7c3aed;
    color: #7c3aed;
    box-shadow:
        0 0 0 3px rgba(124, 58, 237, 0.17),
        0 0.25rem 0.7rem rgba(15, 23, 42, 0.18);
}

.comparing-ordering-decimals-number-marker.marker-four {
    background: #2563eb;
    color: #2563eb;
    box-shadow:
        0 0 0 3px rgba(37, 99, 235, 0.17),
        0 0.25rem 0.7rem rgba(15, 23, 42, 0.18);
}

.comparing-ordering-decimals-number-marker.marker-five {
    background: #dc2626;
    color: #dc2626;
    box-shadow:
        0 0 0 3px rgba(220, 38, 38, 0.16),
        0 0.25rem 0.7rem rgba(15, 23, 42, 0.18);
}

.comparing-ordering-decimals-number-line-labels {
    display: flex;
    justify-content: space-between;
    margin-top: 2.5rem;
    color: #334155;
    font-size: 0.86rem;
    font-weight: 800;
    font-variant-numeric: tabular-nums;
}

.comparing-ordering-decimals-number-line-legend {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.75rem 1rem;
    margin-top: 1rem;
    color: #5f6c7b;
    font-size: 0.75rem;
    font-weight: 700;
}

.comparing-ordering-decimals-number-line-legend > span {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}

.comparing-ordering-decimals-number-line-legend .marker-dot {
    display: inline-block;
    width: 0.8rem;
    height: 0.8rem;
    border-radius: 50%;
}

.comparing-ordering-decimals-number-line-legend .marker-dot.marker-one {
    background: #13857f;
}

.comparing-ordering-decimals-number-line-legend .marker-dot.marker-two {
    background: #d97706;
}

.comparing-ordering-decimals-number-line-legend .marker-dot.marker-three {
    background: #7c3aed;
}

.comparing-ordering-decimals-number-line-legend .marker-dot.marker-four {
    background: #2563eb;
}

.comparing-ordering-decimals-number-line-legend .marker-dot.marker-five {
    background: #dc2626;
}


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

.comparing-ordering-decimals-hint-button {
    display: block;
    margin: 0.25rem auto 0;
    border: 0;
    background: transparent;
    color: #137f79;
    padding: 0.4rem;
    font-size: 0.88rem;
    font-weight: 800;
    text-decoration: underline;
    text-underline-offset: 0.22rem;
}

.comparing-ordering-decimals-hint-button:hover,
.comparing-ordering-decimals-hint-button:focus-visible {
    color: #0f625e;
}

.comparing-ordering-decimals-hint {
    border-left: 4px solid #f59e0b;
    border-radius: 0.8rem;
    background: #fffbeb;
    color: #7c4608;
    padding: 1rem 1.1rem;
    font-size: 0.9rem;
    line-height: 1.65;
}

.comparing-ordering-decimals-hint p:last-child {
    margin-bottom: 0;
}


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

.comparing-ordering-decimals-completion {
    border: 1px solid #bcebd0;
    border-radius: 1.15rem;
    background:
        radial-gradient(
            circle at top center,
            rgba(34, 197, 94, 0.12),
            transparent 20rem
        ),
        #f0fdf4;
    padding: 2rem;
    text-align: center;
}

.comparing-ordering-decimals-completion-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 3.8rem;
    height: 3.8rem;
    margin-bottom: 1rem;
    border-radius: 50%;
    background: #16a34a;
    color: #ffffff;
    font-size: 1.7rem;
    font-weight: 800;
    box-shadow: 0 0.6rem 1.2rem rgba(22, 163, 74, 0.2);
}

.comparing-ordering-decimals-completion h3 {
    margin-bottom: 0.45rem;
    color: #14532d;
    font-size: 1.5rem;
    font-weight: 800;
}

.comparing-ordering-decimals-completion > p {
    color: #3f6d4d;
}

.comparing-ordering-decimals-final-answer {
    max-width: 760px;
    margin: 1.25rem auto;
    border-radius: 0.9rem;
    background: #101827;
    color: #ffffff;
    padding: 1rem 1.25rem;
    font-size: clamp(1.35rem, 4vw, 2rem);
    font-weight: 800;
    font-variant-numeric: tabular-nums;
    line-height: 1.5;
}

.comparing-ordering-decimals-completion-explanation {
    max-width: 700px;
    margin: 0 auto 1.4rem;
    color: #41664b;
    line-height: 1.7;
}


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

.comparing-ordering-decimals-reminders-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1rem;
    max-width: 1180px;
    margin: 0 auto;
}

.comparing-ordering-decimals-reminder-card {
    border: 1px solid #dce5eb;
    border-top: 4px solid #13857f;
    border-radius: 1.05rem;
    background: #ffffff;
    padding: 1.45rem;
    box-shadow: 0 0.45rem 1.2rem rgba(15, 23, 42, 0.04);
}

.comparing-ordering-decimals-reminder-card:nth-child(2) {
    border-top-color: #2563eb;
}

.comparing-ordering-decimals-reminder-card:nth-child(3) {
    border-top-color: #f59e0b;
}

.comparing-ordering-decimals-reminder-card:nth-child(4) {
    border-top-color: #7c3aed;
}

.comparing-ordering-decimals-reminder-card h3 {
    margin-bottom: 0.7rem;
    color: #17212b;
    font-size: 1.02rem;
    font-weight: 800;
    line-height: 1.4;
}

.comparing-ordering-decimals-reminder-card p {
    margin-bottom: 1rem;
    color: #667384;
    font-size: 0.9rem;
    line-height: 1.65;
}

.comparing-ordering-decimals-example {
    border-radius: 0.7rem;
    background: #f2f6f8;
    color: #263448;
    padding: 0.7rem;
    font-size: 1rem;
    font-weight: 800;
    font-variant-numeric: tabular-nums;
    line-height: 1.55;
    text-align: center;
}


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

.comparing-ordering-decimals-final-cta-card {
    max-width: 920px;
    margin: 0 auto;
    border-radius: 1.4rem;
    background:
        radial-gradient(
            circle at top right,
            rgba(45, 212, 191, 0.18),
            transparent 22rem
        ),
        #101827;
    color: #ffffff;
    padding: 2.5rem;
    text-align: center;
    box-shadow: 0 1.4rem 3rem rgba(15, 23, 42, 0.14);
}

.comparing-ordering-decimals-final-cta-card .comparing-ordering-decimals-eyebrow {
    color: #5eead4;
}

.comparing-ordering-decimals-final-cta-card h2 {
    color: #ffffff;
}

.comparing-ordering-decimals-final-cta-card p:not(.comparing-ordering-decimals-eyebrow) {
    max-width: 700px;
    margin: 0 auto 1.5rem;
    color: rgba(255, 255, 255, 0.78);
    line-height: 1.75;
}


/* =========================================================
   Keyboard focus
   ========================================================= */

.comparing-ordering-decimals-page button:focus-visible,
.comparing-ordering-decimals-page select:focus-visible,
.comparing-ordering-decimals-page a:focus-visible {
    outline: 3px solid rgba(20, 184, 166, 0.34);
    outline-offset: 3px;
}


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

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

    .comparing-ordering-decimals-tool-header {
        align-items: flex-start;
    }

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

    .comparing-ordering-decimals-setting-actions {
        justify-content: stretch;
    }

    .comparing-ordering-decimals-setting-actions .btn {
        flex: 1 1 180px;
    }

    .comparing-ordering-decimals-card-heading {
        flex-direction: column;
        gap: 0.8rem;
    }

    .comparing-ordering-decimals-place-legend {
        justify-content: flex-start;
    }

    .comparing-ordering-decimals-card-heading > .comparing-ordering-decimals-visual-instruction {
        max-width: none;
        text-align: left;
    }
}


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

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

    .comparing-ordering-decimals-tool {
        border-radius: 1.1rem;
    }

    .comparing-ordering-decimals-tool-header {
        flex-direction: column;
        gap: 1.4rem;
        padding: 1.6rem;
    }

    .comparing-ordering-decimals-scoreboard {
        width: 100%;
    }

    .comparing-ordering-decimals-score-item {
        min-width: 0;
        padding: 0.7rem 0.5rem;
    }

    .comparing-ordering-decimals-settings {
        padding: 1.25rem 1.4rem;
    }

    .comparing-ordering-decimals-mode-panel {
        padding: 2rem 1.4rem;
    }

    .comparing-ordering-decimals-comparison-expression {
        grid-template-columns:
            minmax(0, 1fr)
            minmax(55px, auto)
            minmax(0, 1fr);
        gap: 0.55rem;
    }

    .comparing-ordering-decimals-comparison-value {
        min-height: 112px;
        padding: 0.75rem 0.4rem;
        font-size: clamp(2rem, 11vw, 3.5rem);
    }

    .comparing-ordering-decimals-symbol-placeholder {
        min-width: 50px;
        font-size: 3rem;
    }

    .comparing-ordering-decimals-workspace {
        padding: 1.4rem;
    }

    .comparing-ordering-decimals-place-value-card,
    .comparing-ordering-decimals-number-line-card {
        padding: 1.25rem;
    }

    .comparing-ordering-decimals-number-line {
        padding-right: 1.4rem;
        padding-left: 1.4rem;
    }

    .comparing-ordering-decimals-final-cta-card {
        padding: 2rem 1.4rem;
    }
}


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

@media (max-width: 575.98px) {
    .comparing-ordering-decimals-overview-grid,
    .comparing-ordering-decimals-reminders-grid,
    .comparing-ordering-decimals-settings {
        grid-template-columns: 1fr;
    }

    .comparing-ordering-decimals-scoreboard {
        gap: 0.45rem;
    }

    .comparing-ordering-decimals-score-label {
        font-size: 0.62rem;
    }

    .comparing-ordering-decimals-score-item strong {
        font-size: 1.25rem;
    }

    .comparing-ordering-decimals-setting-actions {
        display: grid;
        grid-template-columns: 1fr;
    }

    .comparing-ordering-decimals-symbol-buttons {
        gap: 0.5rem;
    }

    .comparing-ordering-decimals-symbol-button {
        min-height: 88px;
        padding: 0.55rem 0.25rem;
    }

    .comparing-ordering-decimals-symbol-button > span {
        font-size: 2rem;
    }

    .comparing-ordering-decimals-symbol-button small {
        font-size: 0.58rem;
    }

    .comparing-ordering-decimals-ordering-item {
        grid-template-columns: auto minmax(0, 1fr) auto;
        gap: 0.55rem;
        padding: 0.65rem;
    }

    .comparing-ordering-decimals-ordering-item strong {
        font-size: 1.4rem;
    }

    .comparing-ordering-decimals-drag-handle {
        width: 2.25rem;
        height: 2.25rem;
    }

    .comparing-ordering-decimals-move-button {
        width: 2.25rem;
        height: 2.25rem;
    }

    .comparing-ordering-decimals-number-line {
        padding-top: 4.5rem;
    }

    .comparing-ordering-decimals-number-marker > span {
        font-size: 0.63rem;
    }

    .comparing-ordering-decimals-completion {
        padding: 1.5rem 1rem;
    }
}


/* =========================================================
   Reduced motion
   ========================================================= */

@media (prefers-reduced-motion: reduce) {
    .comparing-ordering-decimals-symbol-button,
    .comparing-ordering-decimals-ordering-item,
    .comparing-ordering-decimals-move-button,
    .comparing-ordering-decimals-number-marker {
        transition: none;
    }
}