@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@500;600;700&family=Work+Sans:wght@400;500;600&family=JetBrains+Mono:wght@400;500;700&display=swap');

/* 
 * Joshua Math Desktop Theme
 * Sleek Modern Minimalism optimized for small laptops
 */

:root {
    /* Color Palette */
    --background: #f9f9fc;
    --surface: #ffffff;
    --surface-dim: #dadadc;
    --surface-bright: #f9f9fc;
    --surface-container-low: #f3f3f6;
    --surface-container: #eeeef0;
    --surface-container-high: #e8e8ea;
    --surface-container-highest: #e2e2e5;
    
    --on-background: #1a1c1e;
    --on-surface: #1a1c1e;
    --on-surface-variant: #434656;
    
    --primary: #003ec7;
    --primary-container: #0052ff;
    --on-primary: #ffffff;
    --on-primary-container: #dfe3ff;
    
    --secondary: #585f6a;
    --on-secondary: #ffffff;
    --secondary-container: #dce3f0;
    
    --tertiary: #005471;
    --tertiary-container: #006e92;
    --on-tertiary-container: #c6eaff;
    
    --error: #ba1a1a;
    --error-container: #ffdad6;
    
    --outline: #737688;
    --outline-variant: #c3c5d9;

    /* Spacing & Rhythm */
    --base: 8px;
    --gutter: 32px;
    --card-padding: 24px; /* Slightly compacted from 32px for small laptop viewports */
    
    /* Corner Radii */
    --radius-sm: 0.25rem; /* 4px */
    --radius-default: 0.5rem; /* 8px - buttons, inputs */
    --radius-md: 0.75rem; /* 12px */
    --radius-lg: 1rem; /* 16px - cards, containers */
    --radius-full: 9999px; /* tags, pills */

    /* Typography scale overrides for desktop */
    --font-display: 'Space Grotesk', sans-serif;
    --font-body: 'Work Sans', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    /* Shadows & Transitions */
    --shadow-sm: 0px 4px 20px rgba(0, 0, 0, 0.04);
    --shadow-md: 0px 8px 24px rgba(0, 82, 255, 0.08);
    --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);

    /* MCS widget engine theme bridge (Phase 1) */
    --mcs-accent: #0052ff;
    --mcs-accent-soft: #dfe3ff;
    --mcs-ink: #1a1c1e;
    --mcs-grid-line: #c3c5d9;
    --mcs-correct: #059669;
    --mcs-error: #ba1a1a;
    --mcs-focus-ring: #0052ff;
    --mcs-font-display: var(--font-display);
    --mcs-font-body: var(--font-body);
    --mcs-font-mono: var(--font-mono);
}

/* Amber Theme variables override for Year 4 */
.theme-amber {
    --primary: #d97706; /* Amber 600 */
    --primary-container: #f59e0b; /* Amber 500 */
    --on-primary-container: #fef3c7; /* Amber 100 */
    --tertiary: #b45309; /* Amber 700 */
    --tertiary-container: #d97706;
    --on-tertiary-container: #fef3c7;
    --shadow-md: 0px 8px 24px rgba(217, 119, 6, 0.08);
    --mcs-accent: #b45309;
    --mcs-accent-soft: #fef3c7;
    --mcs-focus-ring: #b45309;
}

/* Emerald Theme variables override for Year 6 */
.theme-emerald {
    --primary: #059669; /* Emerald 600 */
    --primary-container: #10b981; /* Emerald 500 */
    --on-primary-container: #ecfdf5; /* Emerald 50 */
    --tertiary: #047857; /* Emerald 700 */
    --tertiary-container: #059669;
    --on-tertiary-container: #ecfdf5;
    --shadow-md: 0px 8px 24px rgba(5, 150, 105, 0.08);
    --mcs-accent: #059669;
    --mcs-accent-soft: #d1fae5;
    --mcs-focus-ring: #059669;
}

/* Teal Theme variables override for Year 3 */
.theme-teal {
    --primary: #005471; /* Teal 700 */
    --primary-container: #00769d; /* Teal 600 */
    --on-primary-container: #d2f4ff; /* Light Teal */
    --tertiary: #0b7a75; /* Teal Green */
    --tertiary-container: #005471;
    --on-tertiary-container: #d2f4ff;
    --shadow-md: 0px 8px 24px rgba(0, 84, 113, 0.08);
    --mcs-accent: #0d9488;
    --mcs-accent-soft: #ccfbf1;
    --mcs-focus-ring: #0d9488;
}

/* Sunrise Theme — Prep / Foundation (Phase 5, doc 04) */
.theme-sunrise {
    --primary: #ea580c;
    --primary-container: #fb923c;
    --on-primary-container: #fff7ed;
    --tertiary: #c2410c;
    --tertiary-container: #ea580c;
    --on-tertiary-container: #fff7ed;
    --shadow-md: 0px 8px 24px rgba(234, 88, 12, 0.1);
    --mcs-accent: #ea580c;
    --mcs-accent-soft: #ffedd5;
    --mcs-focus-ring: #ea580c;
}

/* Band A practice chrome (doc 06 §6) */
body.band-a-layout .panel-left .log-container,
body.band-a-layout #log-list {
    display: none;
}

body.band-a-layout .panel-left {
    max-width: 220px;
}

body.band-a-layout .panel-center {
    flex: 1 1 0;
    min-width: 0;
}

body.band-a-layout .dashboard-workspace {
    gap: 12px;
}

body.band-a-layout .practice-selectors {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(96px, 1fr));
    gap: 10px;
    margin-bottom: 16px;
}

body.band-a-layout .practice-selectors .selector-tab {
    --strand-tab-colour: var(--primary);
    font-size: 0.95rem;
    min-height: 52px;
    padding: 10px 12px;
    border-bottom: 4px solid var(--strand-tab-colour);
    text-align: center;
}

body.band-a-layout .practice-selectors .selector-tab.active {
    background-color: var(--strand-tab-colour);
    border-color: var(--strand-tab-colour);
    color: #fff;
}

body.band-a-layout .band-a-action-btn {
    min-height: 56px;
    min-width: 112px;
    font-size: 1.05rem;
    font-weight: 700;
}

body.band-a-layout .badge-shelf.band-a-badge-shelf {
    display: flex;
    gap: 10px;
    justify-content: center;
    flex-wrap: wrap;
    min-height: 56px;
    align-items: center;
}

body.band-a-layout .badge-shelf.band-a-badge-shelf .band-a-badge-icon {
    width: 56px;
    height: 56px;
    font-size: 1.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    border: 2px solid var(--outline-variant);
}

body.band-a-layout .band-a-badge-empty {
    color: var(--on-surface-variant);
    font-size: 1.25rem;
    opacity: 0.5;
}

body.band-a-layout .band-a-adult-console-toggle {
    width: 100%;
    margin-top: 8px;
    font-size: 0.7rem;
    opacity: 0.75;
}

body.band-a-layout .band-a-adult-console {
    display: none;
    margin-top: 8px;
    padding: 10px;
    font-size: 0.72rem;
    font-family: var(--font-mono, monospace);
    background: var(--surface-container-low);
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius-default);
    color: var(--on-surface-variant);
    line-height: 1.5;
    white-space: pre-wrap;
    word-break: break-word;
}

body.band-a-layout .band-a-adult-console.is-open {
    display: block;
}

body.band-a-layout .band-a-empty-strand {
    text-align: center;
    padding: 32px 16px;
    color: var(--on-surface-variant);
}

body.band-a-layout .band-a-empty-strand-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
    margin: 0 0 8px;
}

body.band-a-layout .band-a-empty-strand-body {
    font-size: 1rem;
    margin: 0;
    max-width: 360px;
    margin-inline: auto;
}

/* Year 1 — Band A→B transition (doc 04 §3) */
body.band-y1-layout.band-a-layout .mcs-prompt-numeral {
    font-size: 2.75rem;
}

body.band-y1-layout.band-a-layout .practice-selectors .selector-tab {
    min-height: 48px;
    font-size: 0.9rem;
}

/* Year 2 — Band B (doc 04 §3) */
body.band-y2-layout.band-a-layout .mcs-prompt-numeral {
    font-size: 2.25rem;
}

body.band-y2-layout.band-a-layout .practice-selectors .selector-tab {
    min-height: 44px;
    font-size: 0.85rem;
}

body.band-a-layout .mcs-prompt-audio-btn {
    min-width: 56px;
    min-height: 56px;
    font-size: 1.4rem;
    border-radius: 50%;
    border: 2px solid var(--outline-variant);
    background: var(--surface-container);
    cursor: pointer;
}

body.band-a-layout .mcs-prompt-numeral {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary);
    line-height: 1;
}

body.band-a-layout .mcs-counters-zone-label,
body.band-a-layout .mcs-counters-tray-label {
    font-size: 1rem;
    font-weight: 700;
    color: var(--on-surface-variant);
    text-align: center;
    margin-top: 4px;
}

.mcs-counters-compare .mcs-counters-board {
    margin: 8px auto;
}

.mcs-counters-share .mcs-counters-zone-label {
    display: inline-block;
    width: 48%;
    text-align: center;
}

.mcs-counters-money .mcs-counters-money-total {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--primary);
    text-align: center;
    margin: 4px 0 8px;
}

.mcs-ten-frame-board {
    display: flex;
    justify-content: center;
    margin: 8px 0;
}

.mcs-ten-frame-status {
    text-align: center;
    font-size: 1rem;
    font-weight: 600;
    color: var(--on-surface-variant);
    margin: 4px 0 8px;
}

.mcs-ten-frame-replay,
.mcs-ten-frame-fill .mcs-ten-frame-reset {
    display: block;
    margin: 8px auto 0;
}

.mcs-ten-frame-double .mcs-ten-frame-double-board {
    display: flex;
    justify-content: center;
    margin: 8px 0;
}

.mcs-ten-frame-double .mcs-ten-frame-status {
    color: var(--primary);
}

.mcs-sorting-table-sequence .mcs-sorting-table-board {
    display: flex;
    justify-content: center;
    margin: 8px 0;
}

.mcs-sorting-table-columns .mcs-sorting-table-board {
    display: flex;
    justify-content: center;
    margin: 8px 0;
}

.mcs-sorting-table-lane-label,
.mcs-sorting-table-tray-label {
    font-size: 1rem;
    font-weight: 700;
    color: var(--on-surface-variant);
    text-align: center;
    margin-top: 4px;
}

.mcs-sorting-table-reset {
    display: block;
    margin: 8px auto 0;
}

.mcs-sorting-table-solution-glow {
    box-shadow: 0 0 0 3px var(--mcs-accent-soft), 0 0 16px var(--mcs-accent);
    border-radius: 12px;
    transition: box-shadow 0.3s ease;
}

.mcs-pattern-blocks-continue .mcs-pattern-blocks-board {
    display: flex;
    justify-content: center;
    margin: 8px 0;
}

.mcs-pattern-blocks-lane-label,
.mcs-pattern-blocks-tray-label {
    font-size: 1rem;
    font-weight: 700;
    color: var(--on-surface-variant);
    text-align: center;
    margin-top: 4px;
}

.mcs-pattern-blocks-reset {
    display: block;
    margin: 8px auto 0;
}

.mcs-pattern-blocks-solution-glow {
    box-shadow: 0 0 0 3px var(--mcs-accent-soft), 0 0 16px var(--mcs-accent);
    border-radius: 12px;
    transition: box-shadow 0.3s ease;
}

.mcs-ruler-compare .mcs-ruler-board,
.mcs-ruler-informal-units .mcs-ruler-board,
.mcs-ruler-measure .mcs-ruler-board,
.mcs-balance-scale-compare .mcs-balance-scale-board,
.mcs-capacity-jug-compare .mcs-capacity-jug-board {
    display: flex;
    justify-content: center;
    margin: 8px 0;
}

.mcs-ruler-caption,
.mcs-ruler-unit-count {
    text-align: center;
    font-size: 0.85rem;
    color: var(--on-surface-variant);
    margin-top: 6px;
}

.mcs-ruler-unit-count {
    font-weight: 700;
    color: var(--primary);
}

.mcs-place-value-blocks-controls,
.mcs-place-value-blocks-trade-bar {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
    margin-top: 12px;
}

.mcs-place-value-blocks-col-controls {
    display: flex;
    align-items: center;
    gap: 8px;
}

.mcs-place-value-blocks-col-label {
    font-size: 0.75rem;
    font-weight: 700;
    min-width: 4.5rem;
    text-align: center;
    color: var(--on-surface-variant);
}

.mcs-place-value-blocks-total {
    text-align: center;
    font-weight: 700;
    font-size: 1rem;
    color: var(--primary);
    margin-top: 8px;
}

.mcs-ruler-solution-glow,
.mcs-balance-scale-solution-glow,
.mcs-capacity-jug-solution-glow,
.mcs-measure-compare-solution-glow {
    box-shadow: 0 0 0 3px var(--mcs-accent-soft), 0 0 16px var(--mcs-accent);
    border-radius: 12px;
    transition: box-shadow 0.3s ease;
}

body.band-a-layout .mcs-alpha-grid-positional .alpha-grid-cell:not(.label-cell) {
    min-width: 64px;
    min-height: 64px;
    font-size: 1.75rem;
}

body.band-a-layout .mcs-alpha-grid-positional .alpha-grid-cell.label-cell {
    font-size: 1rem;
}

.mcs-alpha-grid-positional .alpha-grid-anchor {
    background-color: var(--mcs-accent-soft);
    border-color: var(--mcs-accent);
    cursor: default;
}

.mcs-alpha-grid-positional .alpha-grid-anchor:hover {
    background-color: var(--mcs-accent-soft);
    border-color: var(--mcs-accent);
    color: inherit;
}

.mcs-number-pad {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    margin-top: 8px;
}

.mcs-number-pad-display {
    min-width: 88px;
    min-height: 72px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.75rem;
    font-weight: 700;
    color: var(--primary);
    border: 2px solid var(--outline-variant);
    border-radius: var(--radius-default);
    background: var(--surface-container);
}

.mcs-number-pad-grid {
    display: grid;
    grid-template-columns: repeat(3, var(--mcs-pad-key-size, 64px));
    gap: 10px;
    justify-content: center;
}

.mcs-number-pad-key {
    width: var(--mcs-pad-key-size, 64px);
    height: var(--mcs-pad-key-size, 64px);
    font-size: 1.35rem;
    font-weight: 700;
    border-radius: 12px;
    border: 2px solid var(--outline-variant);
    background: var(--surface-container-high);
    color: var(--on-surface);
    cursor: pointer;
}

.mcs-number-pad-key:hover:not(:disabled) {
    border-color: var(--mcs-accent);
    background: var(--mcs-accent-soft);
}

.mcs-number-pad-clear {
    font-size: 1.1rem;
}


/* MCS widget engine utilities (Phase 1) */
.mcs-widget-region,
.mcs-input-region {
    width: 100%;
}

.mcs-widget-region + .mcs-input-region {
    margin-top: 8px;
}

/* Gauge reading (Y4 legacy-keep measurement) */
.mcs-gauge-reading {
    width: 100%;
    box-sizing: border-box;
    padding: 12px 12px 10px;
    border: 1px solid var(--outline-variant);
    border-radius: 6px;
}

.mcs-gauge-reading__title {
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 10px;
}

.mcs-gauge-reading__track {
    position: relative;
    width: 100%;
    height: 48px;
    background: var(--surface-container-low);
    border-radius: 4px;
}

.mcs-gauge-reading__ticks {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.mcs-gauge-tick {
    position: absolute;
    bottom: 0;
    width: 1px;
    height: 8px;
    background: var(--outline-variant);
    transform: translateX(-50%);
}

.mcs-gauge-tick--major {
    height: 20px;
    width: 2px;
    background: var(--on-surface-variant);
}

.mcs-gauge-reading__needle {
    position: absolute;
    top: 50%;
    width: 4px;
    height: 32px;
    background: var(--error);
    border-radius: 2px;
    transform: translate(-50%, -50%);
    z-index: 1;
}

.mcs-gauge-reading__labels {
    position: relative;
    width: 100%;
    height: 18px;
    margin-top: 6px;
}

.mcs-gauge-label {
    position: absolute;
    transform: translateX(-50%);
    font-size: 0.7rem;
    color: var(--on-surface-variant);
    font-variant-numeric: tabular-nums;
}

.mcs-gauge-reading__hint {
    font-size: 0.8rem;
    margin: 10px 0 0;
    color: var(--on-surface-variant);
}

/* Measuring cylinder (Y3 legacy-keep measurement) */
.mcs-measuring-cylinder {
    width: 100%;
    box-sizing: border-box;
    display: flex;
    justify-content: center;
    padding: 8px 12px 4px;
    border: 1px solid var(--outline-variant);
    border-radius: 6px;
}

.mcs-measuring-cylinder__svg {
    width: min(150px, 42vw);
    height: auto;
    display: block;
}

.mcs-cylinder-glass {
    fill: rgba(255, 255, 255, 0.55);
}

.mcs-cylinder-outline {
    fill: none;
    stroke: var(--on-surface-variant);
    stroke-width: 2;
}

.mcs-cylinder-spout {
    fill: none;
    stroke: var(--on-surface-variant);
    stroke-width: 2;
    stroke-linecap: round;
}

.mcs-cylinder-water {
    fill: #38bdf8;
    opacity: 0.88;
}

.mcs-cylinder-tick {
    stroke: var(--outline-variant);
    stroke-width: 1;
}

.mcs-cylinder-tick--major {
    stroke: var(--on-surface-variant);
    stroke-width: 1.5;
}

.mcs-cylinder-label,
.mcs-cylinder-unit {
    fill: var(--on-surface-variant);
    font-size: 11px;
    font-variant-numeric: tabular-nums;
}

.mcs-hint-highlight {
    outline: 3px solid var(--mcs-accent);
    outline-offset: 4px;
    border-radius: var(--radius-default);
}

.mcs-flag-correct {
    animation: mcs-pulse-correct 0.6s ease-out;
}

.mcs-flag-incorrect {
    animation: mcs-shake-incorrect 0.45s ease-out;
}

@keyframes mcs-pulse-correct {
    0%, 100% { box-shadow: none; }
    50% { box-shadow: 0 0 0 4px color-mix(in srgb, var(--mcs-correct) 35%, transparent); }
}

@keyframes mcs-shake-incorrect {
    0%, 100% { transform: translateX(0); }
    20% { transform: translateX(-4px); }
    40% { transform: translateX(4px); }
    60% { transform: translateX(-3px); }
    80% { transform: translateX(3px); }
}

@media (prefers-reduced-motion: reduce) {
    .mcs-flag-correct,
    .mcs-flag-incorrect {
        animation: none;
    }
}

/* MCS math-field widget (Phase 2.6) */
.mcs-math-field-wrap {
    width: 100%;
}

.mcs-math-field-row {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.mcs-math-field-inner {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    max-width: 420px;
}

.mcs-math-field {
    flex: 1 1 180px;
    min-width: 160px;
    font-size: 1.35rem;
    border: 2px solid var(--outline-variant);
    border-radius: var(--radius-default);
    padding: 8px 12px;
    background: var(--surface);
}

.mcs-math-field:focus-within {
    border-color: var(--mcs-accent);
    outline: 3px solid color-mix(in srgb, var(--mcs-focus-ring) 35%, transparent);
    outline-offset: 2px;
}

.mcs-math-kb-toggle {
    font-size: 0.75rem;
    padding: 6px 10px;
    white-space: nowrap;
}

.mcs-math-keyboard-dock {
    width: 100%;
    max-width: 520px;
    min-height: 0;
}

.mcs-math-keyboard-dock .ML__keyboard {
    position: relative !important;
    bottom: auto !important;
    left: auto !important;
    right: auto !important;
    transform: none !important;
}

.mcs-math-empty-hint {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--error);
    text-align: center;
}

.mcs-math-field-inner.mcs-wrong-form::after {
    content: 'Can you simplify your fraction?';
    display: block;
    width: 100%;
    font-size: 0.75rem;
    color: var(--secondary);
    text-align: center;
    margin-top: 2px;
}

.mcs-fraction-add-prompt {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 16px;
    font-size: 2rem;
    font-weight: 700;
    margin: 15px 0 8px;
}

.mcs-fraction-add-eq {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
}

/* MCS number-line widget (Phase 2.1) */
.mcs-number-line {
    width: 100%;
    min-height: 140px;
}

.mcs-number-line-board {
    position: relative;
    width: 100%;
    height: 140px;
    min-height: 120px;
    margin: 8px 0 4px;
    border-radius: var(--radius-default);
    outline: none;
}

.mcs-number-line-board-order {
    height: 168px;
    min-height: 168px;
}

.mcs-number-line-board.mcs-number-line-focused {
    outline: 3px solid var(--mcs-focus-ring);
    outline-offset: 2px;
}

.mcs-number-line-board.mcs-number-line-solution-glow {
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--mcs-accent) 40%, transparent);
}

.mcs-number-line-jump-status {
    text-align: center;
    font-size: 1rem;
    font-weight: 600;
    color: var(--on-surface-variant);
    margin: 4px 0 8px;
}

.mcs-number-line-jump-controls {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
    margin-top: 8px;
}

.mcs-number-line-hop-btn {
    min-height: 64px;
    min-width: 180px;
    font-size: 1.05rem;
    font-weight: 700;
}

.mcs-number-line-jump-reset {
    min-height: 48px;
}

.mcs-symmetry-painter-board {
    position: relative;
    width: 100%;
    max-width: 420px;
    margin: 8px auto 4px;
    border-radius: var(--radius-default);
    outline: none;
}

.mcs-symmetry-painter-board.mcs-symmetry-painter-focused {
    outline: 3px solid var(--mcs-focus-ring);
    outline-offset: 2px;
}

.mcs-symmetry-painter-board.mcs-symmetry-painter-solution-glow {
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--mcs-correct) 45%, transparent);
}

.mcs-question-prompt {
    margin-bottom: 12px;
    font-size: 0.95rem;
    line-height: 1.45;
    color: var(--on-surface);
}

.mcs-sr-live {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.mcs-pin-particle {
    position: absolute;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--mcs-correct);
    pointer-events: none;
    animation: mcs-pin-burst 0.55s ease-out forwards;
}

@keyframes mcs-pin-burst {
    0% {
        opacity: 1;
        transform: translate(0, 0) scale(1);
    }
    100% {
        opacity: 0;
        transform: translate(var(--dx), var(--dy)) scale(0.2);
    }
}

@media (prefers-reduced-motion: reduce) {
    .mcs-pin-particle {
        animation: none;
        display: none;
    }
}

/* MCS coordinate-plotter widget (Phase 2.2) */
.mcs-coordinate-plotter {
    width: 100%;
    min-height: 280px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.mcs-coordinate-plotter-board {
    position: relative;
    width: 100%;
    max-width: 420px;
    min-height: 280px;
    margin: 8px auto 4px;
    border-radius: var(--radius-default);
    outline: none;
}

.mcs-coordinate-plotter-board.mcs-coordinate-plotter-focused {
    outline: 3px solid var(--mcs-focus-ring);
    outline-offset: 2px;
}

.mcs-coordinate-plotter-board.mcs-coordinate-plotter-solution-glow {
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--mcs-accent) 40%, transparent);
}

.mcs-shape-builder-copy .mcs-shape-builder-board {
    display: flex;
    justify-content: center;
    margin: 8px 0;
}

.mcs-shape-builder-caption {
    text-align: center;
    font-size: 0.85rem;
    color: var(--on-surface-variant);
    margin-top: 6px;
}

.mcs-shape-builder-solution-glow {
    box-shadow: 0 0 0 3px var(--mcs-accent-soft), 0 0 16px var(--mcs-accent);
    border-radius: 12px;
    transition: box-shadow 0.3s ease;
}

.mcs-transform-board {
    width: 100%;
    min-height: 300px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.mcs-transform-board-canvas {
    position: relative;
    width: 100%;
    max-width: 420px;
    min-height: 280px;
    margin: 8px auto 4px;
    border-radius: var(--radius-default);
    outline: none;
}

.mcs-transform-board-canvas.mcs-transform-board-solution-glow {
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--mcs-accent) 40%, transparent);
}

.mcs-transform-board-caption {
    font-size: 0.75rem;
    color: var(--outline);
    text-align: center;
    margin: 0 8px 4px;
    max-width: 420px;
}

.mcs-transform-board-single-step .mcs-transform-board-controls {
    margin-top: 12px;
    flex-wrap: wrap;
    justify-content: center;
}

.mcs-transform-board-single-step .mcs-transform-btn {
    min-width: 88px;
    min-height: 48px;
}

.mcs-shape-measurer {
    width: 100%;
    min-height: 280px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.mcs-shape-measurer-board {
    position: relative;
    width: 100%;
    max-width: 420px;
    min-height: 260px;
    margin: 8px auto 4px;
    border-radius: var(--radius-default);
    outline: none;
}

.mcs-shape-measurer-board.mcs-shape-measurer-solution-glow {
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--mcs-accent) 40%, transparent);
}

.mcs-coordinate-input-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 12px;
    font-size: 0.95rem;
}

.mcs-coordinate-pair-input {
    width: 100%;
}

/* MCS analog-clock widget (Phase 2.3) */
.mcs-analog-clock {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.mcs-analog-clock-board {
    position: relative;
    margin: 8px auto 4px;
    border-radius: var(--radius-default);
    outline: none;
}

.mcs-analog-clock-board.mcs-analog-clock-focused {
    outline: 3px solid var(--mcs-focus-ring);
    outline-offset: 2px;
}

.mcs-analog-clock-board.mcs-analog-clock-solution-glow {
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--mcs-accent) 40%, transparent);
}

.mcs-analog-clock-elapsed {
    width: 100%;
}

.mcs-elapsed-clocks-wrap {
    display: flex;
    flex-direction: row;
    align-items: flex-end;
    justify-content: center;
    gap: 12px;
    width: 100%;
    max-width: 480px;
    margin: 0 auto;
    padding: 4px 0;
}

.mcs-elapsed-clocks-wrap.mcs-analog-clock-solution-glow {
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--mcs-correct) 45%, transparent);
    border-radius: var(--radius-default);
}

.mcs-elapsed-face {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    flex: 1 1 120px;
    min-width: 0;
}

.mcs-elapsed-label {
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    color: var(--outline);
    text-transform: uppercase;
}

.mcs-elapsed-clock-board {
    width: 100%;
    max-width: 168px;
    margin: 0 auto;
}

.mcs-elapsed-digital {
    font-family: var(--font-mono, 'JetBrains Mono', monospace);
    font-weight: 700;
    font-size: 0.95rem;
    border: 1px solid var(--outline-variant);
    padding: 2px 8px;
    border-radius: 4px;
}

.mcs-elapsed-connector {
    flex: 0 0 52px;
    align-self: center;
    min-height: 64px;
}

@media (max-width: 480px) {
    .mcs-elapsed-clocks-wrap {
        flex-direction: column;
        align-items: center;
        gap: 16px;
    }

    .mcs-elapsed-connector {
        transform: rotate(90deg);
        flex: 0 0 auto;
    }
}

/* MCS protractor widget (Phase 3c) */
.mcs-protractor {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.mcs-protractor-board {
    position: relative;
    width: 100%;
    max-width: 380px;
    margin: 8px auto 4px;
    border-radius: var(--radius-default);
    outline: none;
}

.mcs-protractor-board .mcs-konva-host {
    display: block;
    margin: 0 auto;
}

.mcs-protractor-board.mcs-protractor-focused {
    outline: 3px solid var(--mcs-focus-ring);
    outline-offset: 2px;
}

.mcs-protractor-board.mcs-protractor-solution-glow {
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--mcs-correct) 45%, transparent);
}

.mcs-protractor-mcq .angle-btn:focus-visible {
    outline: 3px solid var(--mcs-focus-ring);
    outline-offset: 2px;
}

.mcs-protractor-mcq .angle-btn.primary {
    background: var(--primary);
    color: var(--on-primary);
}

.mcs-time-input-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 12px;
    font-size: 1.1rem;
    font-weight: 700;
}

.mcs-time-colon {
    font-size: 1.5rem;
    line-height: 1;
}

.mcs-time-pair-input {
    width: 100%;
}

/* MCS fraction-bars widget (Phase 2.4) */
.mcs-fraction-bars {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
}

.mcs-fraction-bars-board {
    position: relative;
    margin: 8px auto 4px;
    border-radius: var(--radius-default);
    outline: none;
}

.mcs-fraction-bars-board.mcs-fraction-bars-focused {
    outline: 3px solid var(--mcs-focus-ring);
    outline-offset: 2px;
}

.mcs-fraction-bars-board.mcs-fraction-bars-solution-glow {
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--mcs-accent) 40%, transparent);
}

.mcs-fraction-bars-label {
    margin-top: 8px;
    font-family: var(--font-mono);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
    text-align: center;
}

/* MCS number-track widget (Phase 3b) */
.mcs-number-track {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
}

.mcs-number-track-board {
    position: relative;
    margin: 8px auto 4px;
    border-radius: var(--radius-default);
    outline: none;
}

.mcs-number-track-board.mcs-number-track-focused {
    outline: 3px solid var(--mcs-focus-ring);
    outline-offset: 2px;
}

.mcs-number-track-board.mcs-number-track-solution-glow {
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--mcs-accent) 40%, transparent);
}

.mcs-number-track-caption {
    margin-top: 6px;
    font-size: 0.8rem;
    color: var(--outline);
    text-align: center;
}

body.band-a-layout .mcs-number-track-caption {
    font-size: 1rem;
    font-weight: 600;
    color: var(--on-surface-variant);
}

/* place-value-blocks + array-builder (Phase 3d Slice 3) */
.mcs-place-value-blocks,
.mcs-array-builder {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    width: 100%;
}

.mcs-place-value-blocks-board,
.mcs-array-builder-board {
    display: flex;
    justify-content: center;
    width: 100%;
    overflow-x: auto;
}

.mcs-place-value-blocks-caption,
.mcs-array-builder-caption {
    font-size: 0.75rem;
    color: var(--on-surface-variant);
    text-align: center;
}

.mcs-hint-pending .mcs-place-value-blocks-board,
.mcs-hint-pending .mcs-array-builder-board {
    transition: opacity 0.25s ease;
}

.mcs-place-value-blocks-solution-glow,
.mcs-array-builder-solution-glow {
    animation: mcs-pulse-correct 0.9s ease-out;
}

.mcs-fraction-bars-reset {
    margin-top: 12px;
    font-size: 0.8rem;
    padding: 6px 14px;
}

.mcs-array-builder-controls {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
    margin-top: 8px;
}

.mcs-array-builder-dim-controls {
    display: flex;
    align-items: center;
    gap: 8px;
}

.mcs-array-builder-dim-label {
    font-size: 0.85rem;
    font-weight: 700;
    min-width: 5.5rem;
    text-align: center;
    color: var(--on-surface-variant);
}

/* MCS column-graph widget (Phase 2.5) */
.mcs-column-graph {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
}

.mcs-column-graph-board {
    position: relative;
    margin: 8px auto 12px;
    border-radius: var(--radius-default);
    outline: none;
    overflow: hidden;
}

.mcs-column-graph-board.mcs-column-graph-focused {
    outline: 3px solid var(--mcs-focus-ring);
    outline-offset: 2px;
}

.mcs-column-graph-board.mcs-column-graph-solution-glow {
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--mcs-accent) 40%, transparent);
}

.mcs-column-graph-board.mcs-column-graph-guide-pulse {
    box-shadow: 0 0 0 2px color-mix(in srgb, var(--mcs-accent) 25%, transparent);
}

.mcs-column-graph-build .mcs-column-graph-tally {
    font-size: 0.9rem;
    font-weight: 600;
    text-align: center;
    margin-bottom: 6px;
    color: var(--on-surface);
}

.mcs-column-graph-build .mcs-column-graph-scale-key {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--primary);
    text-align: center;
    margin-bottom: 4px;
}

.mcs-column-graph-build .mcs-column-graph-caption {
    font-size: 0.8rem;
    color: var(--on-surface-variant);
    text-align: center;
    margin: 0 8px 8px;
}

.mcs-column-graph-build-controls {
    flex-wrap: wrap;
    margin-top: 10px;
    width: 100%;
}

.mcs-column-graph-col-controls {
    min-width: 72px;
}

.mcs-column-graph-col-label {
    font-size: 0.75rem;
    font-weight: 700;
    text-align: center;
}

.mcs-column-graph-step {
    min-width: 48px;
    min-height: 48px;
    padding: 0 12px;
}

.mcs-column-graph-picture.mcs-column-graph {
    width: 100%;
}

/* MCS line-graph widget (Phase 3a) */
.mcs-line-graph {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
}

.mcs-line-graph-title {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--on-surface);
    text-align: center;
    margin-bottom: 4px;
}

.mcs-line-graph-board {
    position: relative;
    margin: 8px auto 4px;
    border-radius: var(--radius-default);
    outline: none;
}

.mcs-line-graph-board.mcs-line-graph-focused {
    outline: 3px solid var(--mcs-focus-ring);
    outline-offset: 2px;
}

.mcs-line-graph-board.mcs-line-graph-solution-glow {
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--mcs-accent) 40%, transparent);
}

.mcs-line-graph-board.mcs-line-graph-guide-pulse {
    box-shadow: 0 0 0 2px color-mix(in srgb, var(--mcs-accent) 25%, transparent);
}

.mcs-select-input {
    width: 100%;
}

.mcs-radio-choice-input {
    width: 100%;
}

.mcs-radio-choice-label {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 4px;
    text-align: center;
}

.mcs-radio-choice-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
    width: 100%;
}

.mcs-radio-choice-option {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 10px 14px;
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius-default);
    cursor: pointer;
    font-size: 0.9rem;
    line-height: 1.4;
    transition: var(--transition);
}

.mcs-radio-choice-option:hover {
    background-color: var(--surface-container-low);
}

.mcs-radio-choice-option:has(input[type="radio"]:checked) {
    border-color: var(--primary);
    background-color: var(--on-primary-container);
    color: var(--primary);
}

.mcs-radio-choice-option input[type="radio"] {
    margin-top: 3px;
    flex-shrink: 0;
    cursor: pointer;
}

.mcs-radio-choice-option span {
    flex: 1;
}

.mcs-number-input {
    width: 100%;
}

/* Grid method multiplication table */
.mcs-multiplication-grid {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.mcs-multiplication-grid-caption {
    font-family: 'Work Sans', sans-serif;
    font-size: 0.9rem;
    color: var(--on-surface-variant);
    text-align: center;
}

.mcs-mult-grid-expr strong {
    color: var(--primary);
    font-family: 'JetBrains Mono', monospace;
}

.mcs-multiplication-grid-table-wrap {
    border-radius: var(--radius-default);
    padding: 4px;
}

.mcs-multiplication-grid-table {
    border-collapse: separate;
    border-spacing: 0;
    min-width: 260px;
    background: var(--surface-container-lowest);
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius-default);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.mcs-multiplication-grid-table th,
.mcs-multiplication-grid-table td {
    border: 1px solid var(--outline-variant);
    padding: 10px 12px;
    text-align: center;
    vertical-align: middle;
}

.mcs-mult-grid-label {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--on-surface);
    background: var(--surface-container-low);
}

.mcs-mult-grid-op {
    font-family: 'JetBrains Mono', monospace;
    font-weight: 700;
    color: var(--primary);
    background: var(--surface-container);
    width: 36px;
}

.mcs-mult-grid-input {
    width: 88px;
    max-width: 100%;
    font-size: 1.1rem;
    font-weight: 700;
    text-align: center;
    padding: 8px 6px;
}

.mcs-mult-grid-total-row .mcs-mult-grid-total-label {
    text-transform: uppercase;
    letter-spacing: 0.06em;
    font-size: 0.8rem;
    color: var(--on-surface-variant);
}

.mcs-mult-grid-total-row .mcs-mult-grid-input {
    border-color: var(--primary);
    background: var(--on-primary-container);
}

.mcs-multiplication-grid-solution-glow {
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--mcs-correct) 45%, transparent);
    border-radius: var(--radius-default);
}

.mcs-number-input-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 12px;
    font-size: 0.95rem;
}


/* Base elements */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    cursor: default;
}

body {
    background-color: var(--background);
    color: var(--on-background);
    font-family: 'Work Sans', sans-serif;
    font-size: 16px;
    line-height: 1.5;
    overflow: hidden; /* Prevent page overflow on small viewports */
    height: 100vh;
    width: 100vw;
    position: relative;
    -webkit-font-smoothing: antialiased;
}

/* Main Layout Grid */
.terminal-layout {
    display: flex;
    flex-direction: column;
    height: 100vh;
    width: 100vw;
    padding: 24px;
    gap: 24px;
    max-width: var(--container-max-width);
    margin: 0 auto;
}

/* Sleek Header styling */
.system-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: var(--surface);
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius-md);
    padding: 12px 24px;
    height: 64px;
    box-shadow: var(--shadow-sm);
    flex-shrink: 0;
}

.system-title {
    display: flex;
    align-items: center;
    gap: 12px;
}

.system-title h1 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: -0.01em;
}

.system-title .accent-tag {
    background-color: var(--on-primary-container);
    color: var(--primary);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 4px 10px;
    border-radius: var(--radius-full);
    letter-spacing: 0.02em;
}

.system-status {
    display: flex;
    align-items: center;
    gap: 24px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    color: var(--on-surface-variant);
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 8px;
}

.status-dot {
    width: 8px;
    height: 8px;
    background-color: var(--tertiary);
    border-radius: 50%;
    position: relative;
}

.status-dot::after {
    content: "";
    position: absolute;
    top: -2px; left: -2px; right: -2px; bottom: -2px;
    border: 2px solid var(--tertiary);
    border-radius: 50%;
    opacity: 0.4;
}

.status-dot.loading {
    background-color: var(--primary-container);
    animation: pulse 1s infinite alternate;
}

.status-dot.loading::after {
    border-color: var(--primary-container);
}

/* Modern Progression Nodes in Header */
.progression-tracker {
    display: flex;
    gap: 8px;
    background-color: var(--surface-container-low);
    padding: 4px;
    border-radius: var(--radius-full);
}

.tracker-node {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 6px 14px;
    border-radius: var(--radius-full);
    color: var(--on-surface-variant);
    transition: var(--transition);
}

.tracker-node.active {
    background-color: var(--primary);
    color: var(--on-primary);
    box-shadow: 0px 4px 10px rgba(0, 62, 199, 0.2);
}

.tracker-node.complete {
    color: var(--tertiary);
    background-color: var(--on-tertiary-container);
}

/* Dashboard Content Grid */
.dashboard-workspace {
    flex-grow: 1;
    display: flex;
    gap: 24px;
    min-height: 0;
}

/* Panel Design */
.terminal-panel {
    background-color: var(--surface);
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    position: relative;
    transition: var(--transition);
}

.panel-left {
    width: 320px;
    flex-shrink: 0;
}

.panel-center {
    flex-grow: 1;
}

.panel-header {
    background-color: var(--surface-container-low);
    border-bottom: 1px solid var(--outline-variant);
    padding: 12px 20px;
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 600;
    font-size: 0.85rem;
    letter-spacing: 0.02em;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--on-surface-variant);
}

.panel-header .code-tag {
    font-family: 'JetBrains Mono', monospace;
    color: var(--primary);
    font-size: 0.75rem;
    font-weight: 700;
}

.panel-content {
    flex-grow: 1;
    padding: var(--card-padding);
    overflow-y: auto;
    min-height: 0;
}

/* Diagnostics Sidebar Log entries */
.log-container {
    display: flex;
    flex-direction: column;
    gap: 12px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    height: 100%;
}

.log-entry {
    background-color: var(--surface-container-lowest);
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius-default);
    padding: 12px;
    line-height: 1.4;
    transition: var(--transition);
}

.log-entry.system {
    border-left: 3px solid var(--primary-container);
    background-color: var(--surface-container-low);
}

.log-entry.success {
    border-left: 3px solid var(--tertiary);
    background-color: #f0f7f4;
}

.log-entry.error {
    border-left: 3px solid var(--error);
    background-color: var(--error-container);
}

.log-entry .log-time {
    color: var(--outline);
    font-weight: 700;
    margin-bottom: 4px;
}

/* Wizard Containers */
.stage-container {
    display: none;
    height: 100%;
    flex-direction: column;
}

.stage-container.active {
    display: flex;
}

/* Stage 1: Keypad Fact recall */
.fact-recall-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 24px;
    height: 100%;
}

.equation-monitor {
    background-color: var(--surface-container-low);
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius-md);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 32px;
    position: relative;
}

.equation-monitor::after {
    content: "DIAGNOSTIC ENGINE 01";
    position: absolute;
    bottom: 16px;
    left: 20px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.65rem;
    color: var(--outline);
    letter-spacing: 0.05em;
}

.equation-display {
    font-size: 4rem;
    font-weight: 700;
    font-family: 'Space Grotesk', sans-serif;
    color: var(--primary);
    margin-bottom: 24px;
    letter-spacing: -0.03em;
}

.equation-input-wrapper {
    width: 60%;
    position: relative;
    border-bottom: 2px solid var(--primary);
}

.equation-input-wrapper input {
    width: 100%;
    background: transparent;
    border: none;
    outline: none;
    color: var(--on-surface);
    font-family: 'JetBrains Mono', monospace;
    font-size: 2.5rem;
    text-align: center;
    padding: 6px;
    font-weight: 700;
}

.equation-input-wrapper input::placeholder {
    color: var(--outline-variant);
}

.engine-progress-bar {
    width: 80%;
    height: 6px;
    background-color: var(--surface-container-highest);
    border-radius: var(--radius-full);
    margin-top: 32px;
    overflow: hidden;
}

.engine-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--tertiary) 0%, var(--primary-container) 100%);
    width: 0%;
    transition: width 0.3s ease;
}

.recall-keypad-panel {
    display: flex;
    flex-direction: column;
}

.keypad-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    flex-grow: 1;
}

.keypad-btn {
    background-color: var(--surface-container-low);
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius-default);
    color: var(--on-surface);
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.5rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
    transition: var(--transition);
}

.keypad-btn:hover {
    background-color: var(--primary);
    color: var(--on-primary);
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
    cursor: pointer;
}

.keypad-btn:active {
    transform: translateY(0);
}

.keypad-btn.action-btn {
    background-color: var(--surface-container-highest);
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.keypad-btn.submit-btn {
    background-color: var(--on-tertiary-container);
    border-color: var(--tertiary);
    color: var(--tertiary);
}

.keypad-btn.submit-btn:hover {
    background-color: var(--tertiary);
    color: var(--on-primary);
    border-color: var(--tertiary);
}

/* Stage 2: Place Value Lab Design */
.place-value-layout {
    display: flex;
    flex-direction: column;
    gap: 20px;
    height: 100%;
}

.lab-instruction-box {
    background-color: var(--on-primary-container);
    border-radius: var(--radius-default);
    padding: 12px 18px;
    font-size: 0.9rem;
    color: var(--primary);
    font-weight: 500;
}

/* Sub-station Container cards */
.station-container {
    flex-grow: 1;
    display: none;
    flex-direction: column;
    gap: 16px;
    min-height: 0;
}

.station-container.active {
    display: flex;
}

/* Calculator redesign */
.calc-hacker-grid {
    display: grid;
    grid-template-columns: 260px 1fr;
    gap: 24px;
    align-items: flex-start;
}

.calc-device {
    background-color: var(--surface-container-low);
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius-lg);
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    box-shadow: var(--shadow-sm);
}

.calc-screen {
    background-color: var(--surface);
    border: 2px solid var(--primary);
    border-radius: var(--radius-default);
    height: 64px;
    display: flex;
    justify-content: flex-end;
    align-items: center;
    padding: 0 16px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--primary);
    position: relative;
}

.calc-screen::before {
    content: "VALUE REGISTER";
    position: absolute;
    top: 6px;
    left: 8px;
    font-size: 0.55rem;
    font-weight: 700;
    color: var(--outline);
    letter-spacing: 0.05em;
}

.calc-buttons {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
}

.calc-btn {
    background-color: var(--surface);
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius-default);
    color: var(--on-surface);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    font-weight: 600;
    padding: 10px;
    text-align: center;
    transition: var(--transition);
}

.calc-btn:hover {
    background-color: var(--primary);
    border-color: var(--primary);
    color: var(--on-primary);
    cursor: pointer;
}

.calc-btn.op-btn {
    background-color: var(--on-primary-container);
    border-color: var(--primary-container);
    color: var(--primary);
}

.calc-btn.op-btn:hover {
    background-color: var(--primary);
    color: var(--on-primary);
}

.calc-explain-panel {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

/* Number Expander workbench */
.expander-workbench {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background-color: var(--surface-container-low);
    border-radius: var(--radius-lg);
    padding: 32px;
}

.number-expander-widget {
    display: flex;
    align-items: stretch;
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius-md);
    background-color: var(--surface);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.expander-block {
    display: flex;
    align-items: center;
    transition: var(--transition);
}

.expander-number {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 2.2rem;
    font-weight: 700;
    padding: 12px 24px;
    background-color: var(--surface-container-low);
    min-width: 60px;
    text-align: center;
    border-right: 1px solid var(--outline-variant);
    color: var(--primary);
}

.expander-label {
    background-color: var(--surface);
    font-family: 'Work Sans', sans-serif;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--on-surface-variant);
    padding: 12px 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
    border-right: 1px dashed var(--outline-variant);
    max-width: 130px;
    opacity: 1;
    overflow: hidden;
}

.expander-joint {
    width: 32px;
    background-color: var(--surface-container-highest);
    border: none;
    border-right: 1px solid var(--outline-variant);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.95rem;
    color: var(--primary);
    transition: var(--transition);
}

.expander-joint:hover {
    background-color: var(--primary);
    color: var(--on-primary);
    cursor: pointer;
}

/* Expander Collapsed logic */
.expander-block.collapsed .expander-label {
    max-width: 0;
    padding-left: 0;
    padding-right: 0;
    opacity: 0;
    border-right: none;
}

.expander-block.collapsed .expander-joint::before {
    content: "↔";
    font-weight: 700;
}

/* Cards & Inputs redesign */
.question-card {
    background-color: var(--surface);
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.question-card h3 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--on-surface);
}

.question-input-group {
    display: flex;
    align-items: center;
    gap: 12px;
}

.input-text-terminal {
    background-color: var(--surface-container-low);
    border: none;
    border-bottom: 2px solid var(--outline-variant);
    border-radius: var(--radius-default) var(--radius-default) 0 0;
    color: var(--on-surface);
    font-family: 'JetBrains Mono', monospace;
    padding: 10px 16px;
    outline: none;
    transition: var(--transition);
}

.input-text-terminal:focus {
    border-bottom-color: var(--primary);
    background-color: var(--surface-container);
}

/* Hide native number spinners — students type answers; spinners steal width on narrow fields */
.input-text-terminal[type="number"] {
    -moz-appearance: textfield;
    appearance: textfield;
}

.input-text-terminal[type="number"]::-webkit-outer-spin-button,
.input-text-terminal[type="number"]::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.input-number-small {
    width: 90px;
    font-size: 1.2rem;
    text-align: center;
    font-weight: 700;
    padding-left: 8px;
    padding-right: 8px;
}

/* Radio Choice Redesign */
#calc-options-group label {
    padding: 10px 14px;
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius-default);
    transition: var(--transition);
}

#calc-options-group label:hover {
    background-color: var(--surface-container-low);
    cursor: pointer;
}

#calc-options-group input[type="radio"]:checked + span,
#calc-options-group label:has(input[type="radio"]:checked) {
    border-color: var(--primary);
    background-color: var(--on-primary-container);
    color: var(--primary);
}

/* Stage 3: Eggerling's Dispatch Center Redesign */
.eggerling-layout {
    display: flex;
    flex-direction: column;
    gap: 20px;
    height: 100%;
}

.eggerling-panel-split {
    display: none;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    height: 100%;
    min-height: 0;
}

.eggerling-panel-split.active {
    display: grid;
}

.visual-workbench {
    background-color: var(--surface-container-low);
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius-lg);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-sm);
}

/* Draggable/Interactive packing boxes */
.egg-packer-canvas {
    flex-grow: 1;
    padding: 20px;
    overflow-y: auto;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
    gap: 12px;
    align-content: flex-start;
}

.egg-carton {
    background-color: var(--surface);
    border: 1px dashed var(--outline);
    border-radius: var(--radius-md);
    padding: 10px;
    display: flex;
    flex-direction: column;
    gap: 6px;
    transition: var(--transition);
}

.egg-carton.packed {
    border: 2px solid var(--primary);
    background-color: var(--surface);
    box-shadow: var(--shadow-sm);
}

.carton-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    grid-template-rows: repeat(2, 1fr);
    gap: 6px;
    height: 48px;
}

.egg-slot {
    background-color: var(--surface-container-low);
    border: 1px solid var(--outline-variant);
    border-radius: 50%;
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.egg-node {
    width: 84%;
    height: 84%;
    background: radial-gradient(circle at 32% 32%, #fff3e6, #e6a060);
    border-radius: 50%;
}

.carton-label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.65rem;
    font-weight: 700;
    text-align: center;
    color: var(--outline);
}

.egg-carton.packed .carton-label {
    color: var(--primary);
}

.loose-eggs-bin {
    grid-column: 1 / -1;
    border-top: 1px solid var(--outline-variant);
    padding-top: 16px;
    margin-top: 16px;
}

.loose-eggs-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    min-height: 36px;
}

/* Dispatch Router Radar Map */
.map-canvas {
    flex-grow: 1;
    position: relative;
    background-color: var(--surface-container-low);
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.radar-sweep {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: linear-gradient(180deg, transparent 0%, rgba(0, 82, 255, 0.04) 50%, transparent 100%);
    animation: sweep 5s linear infinite;
    pointer-events: none;
}

.shop-node {
    position: absolute;
    width: 72px;
    height: 64px;
    background-color: var(--surface);
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius-md);
    padding: 6px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    font-size: 0.7rem;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.shop-node.shop-1 { top: 20%; left: 15%; }
.shop-node.shop-2 { top: 60%; left: 75%; }
.shop-node.shop-3 { top: 25%; left: 60%; }

.shop-node.delivered {
    border-color: var(--tertiary);
    background-color: #f0f7f4;
}

.shop-icon {
    font-size: 1.3rem;
    margin-bottom: 2px;
}

.van-node {
    position: absolute;
    width: 52px;
    height: 40px;
    background-color: var(--primary);
    color: var(--on-primary);
    border-radius: var(--radius-default);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: bold;
    z-index: 10;
    transition: all 1.2s cubic-bezier(0.25, 1, 0.5, 1);
    box-shadow: var(--shadow-md);
}

/* Diagnostic Scorecard Report */
.report-panel {
    display: flex;
    flex-direction: column;
    gap: 20px;
    height: 100%;
}

.grade-banner {
    background-color: var(--on-primary-container);
    border: 1px solid var(--primary-container);
    border-radius: var(--radius-lg);
    padding: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.grade-readout {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 2.8rem;
    font-weight: 700;
    color: var(--primary);
}

.report-table {
    width: 100%;
    border-collapse: collapse;
}

.report-table th, .report-table td {
    padding: 12px 18px;
    text-align: left;
    border-bottom: 1px solid var(--outline-variant);
}

.report-table th {
    font-family: 'Space Grotesk', sans-serif;
    color: var(--primary);
    font-weight: 700;
    font-size: 0.9rem;
}

.report-table td {
    font-size: 0.9rem;
}

/* Standard Buttons with Joshua specifications */
.btn-terminal {
    background-color: var(--surface);
    border: 1px solid var(--outline);
    border-radius: var(--radius-default);
    color: var(--on-surface-variant);
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 600;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.02em;
    padding: 12px 24px;
    min-width: 120px;
    height: 48px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.btn-terminal:hover {
    background-color: var(--primary);
    border-color: var(--primary);
    color: var(--on-primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
    cursor: pointer;
}

.btn-terminal:active {
    transform: translateY(0);
}

.btn-terminal.primary {
    background-color: var(--primary);
    border-color: var(--primary);
    color: var(--on-primary);
}

.btn-terminal.primary:hover {
    background-color: var(--primary-container);
    border-color: var(--primary-container);
}

.btn-terminal:disabled {
    opacity: 0.3;
    pointer-events: none;
}

/* Scrollbars */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--background);
}

::-webkit-scrollbar-thumb {
    background: var(--outline-variant);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--outline);
}

/* General Layout Utilities */
.flex-col { display: flex; flex-direction: column; }
.flex-row { display: flex; flex-direction: row; }
.align-center { align-items: center; }
.gap-8 { gap: 8px; }
.gap-12 { gap: 12px; }
.gap-16 { gap: 16px; }
.mt-auto { margin-top: auto; }
.w-full { width: 100%; }

/* Simple animations */
@keyframes pulse {
    from { opacity: 0.6; }
    to { opacity: 1; }
}

@keyframes sweep {
    from { transform: translateY(-100%); }
    to { transform: translateY(100%); }
}

/* Companion Practice App Styles */

.nav-link-btn {
    background-color: var(--on-primary-container);
    border: 1px solid var(--primary-container);
    border-radius: var(--radius-default);
    color: var(--primary);
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    font-size: 0.8rem;
    padding: 6px 14px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    text-decoration: none;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
}

.nav-link-btn:hover {
    background-color: var(--primary);
    color: var(--on-primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
    cursor: pointer;
}

/* Profile Sidebar Widgets */
.profile-card {
    background-color: var(--surface-container-low);
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius-md);
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.profile-avatar-area {
    display: flex;
    align-items: center;
    gap: 12px;
}

.avatar-circle {
    width: 44px;
    height: 44px;
    background-color: var(--primary);
    color: var(--on-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    font-size: 1.2rem;
}

.profile-name-input {
    background: transparent;
    border: none;
    border-bottom: 1px dashed var(--outline);
    color: var(--on-surface);
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    font-size: 1.05rem;
    outline: none;
    width: 120px;
    padding: 2px 4px;
}

.profile-name-input:focus {
    border-bottom-style: solid;
    border-bottom-color: var(--primary);
}

.rank-pill {
    background-color: var(--primary);
    color: var(--on-primary);
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    padding: 3px 8px;
    border-radius: var(--radius-full);
    letter-spacing: 0.05em;
    display: inline-block;
}

.level-progress-container {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.progress-bar-thin {
    height: 6px;
    background-color: var(--surface-container-highest);
    border-radius: var(--radius-full);
    overflow: hidden;
    position: relative;
}

.progress-bar-fill-thin {
    height: 100%;
    background-color: var(--primary);
    width: 0%;
    transition: width 0.4s ease;
}

.streak-multiplier {
    display: flex;
    align-items: center;
    gap: 6px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
    color: var(--primary);
    font-weight: 700;
}

/* Badge Shelf Widget */
.badge-shelf {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
    margin-top: 8px;
}

.badge-item {
    background-color: var(--surface-container-low);
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius-default);
    aspect-ratio: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    position: relative;
    filter: grayscale(1) opacity(0.35);
    transition: var(--transition);
}

.badge-item.unlocked {
    filter: none;
    background-color: var(--on-primary-container);
    border-color: var(--primary);
    transform: scale(1.05);
    box-shadow: var(--shadow-sm);
}

/* Tooltip on Badge hover */
.badge-item::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 110%;
    left: 50%;
    transform: translateX(-50%) scale(0.85);
    background-color: var(--on-surface);
    color: var(--background);
    font-family: 'Work Sans', sans-serif;
    font-size: 0.65rem;
    padding: 6px 10px;
    border-radius: var(--radius-sm);
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    z-index: 100;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.badge-item:hover::after {
    opacity: 1;
    transform: translateX(-50%) scale(1);
}

/* Category selectors for Practice App */
.practice-selectors {
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
}

.selector-tab {
    background-color: var(--surface);
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius-default);
    color: var(--on-surface-variant);
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 600;
    font-size: 0.85rem;
    padding: 10px 20px;
    transition: var(--transition);
}

.selector-tab:hover {
    background-color: var(--surface-container-low);
    color: var(--on-surface);
    cursor: pointer;
}

.selector-tab.active {
    background-color: var(--primary);
    border-color: var(--primary);
    color: var(--on-primary);
    box-shadow: var(--shadow-md);
}

/* Hint and correction UI boxes */
.hint-box {
    background-color: var(--on-primary-container);
    border: 1px solid var(--primary-container);
    border-radius: var(--radius-default);
    padding: 16px;
    margin-top: 16px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.hint-box.solution-box {
    background-color: var(--error-container);
    border-color: var(--error);
    color: var(--on-background);
}

.hint-dots-container {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    margin-top: 8px;
}

.hint-dot {
    width: 12px;
    height: 12px;
    background-color: var(--primary);
    border-radius: 50%;
    display: inline-block;
}

.hint-dot.subtraction-dot {
    background-color: var(--outline-variant);
    border: 1px dashed var(--outline);
}

.hint-expander-place {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
    font-weight: 700;
    background-color: var(--surface);
    padding: 4px 8px;
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius-sm);
}

.active-feedback-text {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    font-size: 1.1rem;
    margin-bottom: 8px;
}

.feedback-success { color: var(--tertiary); }
.feedback-error { color: var(--error); }

/* ============================================================
   YEAR 5 EXPANSION — New Widget Styles
   ============================================================ */

/* Practice Selectors — 6-tab flex-wrap for small viewports */
.practice-selectors {
    flex-wrap: wrap;
}

.practice-selectors .selector-tab {
    font-size: 0.75rem;
    padding: 8px 14px;
    flex: 1 1 auto;
    min-width: 0;
    text-align: center;
}

/* Expanded badge shelf — accommodate up to 12 badges */
.badge-shelf {
    grid-template-columns: repeat(4, 1fr);
}

/* Additional layout utilities */
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.text-center { text-align: center; }

/* ============================================================
   Interactive Coordinate Grid (10×10 SVG)
   ============================================================ */
.coordinate-grid-container {
    width: 100%;
    max-width: 420px;
    margin: 0 auto;
    aspect-ratio: 1;
}

.coordinate-grid-container svg {
    width: 100%;
    height: 100%;
}

.coord-gridline {
    stroke: var(--outline-variant);
    stroke-width: 0.5;
}

.coord-axis {
    stroke: var(--on-surface);
    stroke-width: 1.5;
}

.coord-label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 10px;
    fill: var(--on-surface-variant);
    text-anchor: middle;
    dominant-baseline: central;
}

.coord-label-y {
    text-anchor: end;
}

.coord-cell {
    fill: transparent;
    stroke: none;
    pointer-events: all;
    transition: fill 0.15s ease;
    cursor: pointer;
}

.coord-waypoint-label {
    pointer-events: none;
}

.coordinate-grid-container svg *,
#assessment-grid-host svg * {
    pointer-events: none;
}

.coordinate-grid-container svg .coord-cell,
#assessment-grid-host svg .coord-cell {
    pointer-events: all;
}

.coord-cell:hover {
    fill: rgba(0, 62, 199, 0.08);
}

.coord-cell.selected {
    fill: rgba(0, 62, 199, 0.15);
}

.coordinate-point {
    fill: var(--primary);
    r: 5;
    cursor: default;
    pointer-events: none;
}

.coordinate-point.target {
    fill: var(--error);
    r: 6;
    animation: coord-pulse 1.2s ease-in-out infinite alternate;
    pointer-events: none;
}

.coordinate-point.waypoint {
    fill: var(--tertiary);
    r: 5;
    pointer-events: none;
}

.coordinate-path {
    stroke: var(--primary);
    stroke-width: 2;
    stroke-dasharray: 6 4;
    fill: none;
    stroke-linecap: round;
    pointer-events: none;
}

.coordinate-path.student {
    stroke: var(--tertiary);
    stroke-dasharray: none;
    stroke-width: 2.5;
    opacity: 0.7;
    pointer-events: none;
}

.coord-waypoint-label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 9px;
    fill: var(--on-surface);
    font-weight: 700;
    pointer-events: none;
}

@keyframes coord-pulse {
    from { opacity: 0.5; r: 4; }
    to { opacity: 1; r: 7; }
}

/* Coordinate input pair row */
.coord-input-pair {
    display: flex;
    align-items: center;
    gap: 6px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9rem;
    font-weight: 600;
}

.coord-input-pair input {
    width: 56px;
    font-size: 1.1rem;
    text-align: center;
}

/* ============================================================
   SVG Line Graph (Statistics)
   ============================================================ */
.line-graph-container {
    width: 100%;
    max-width: 500px;
    margin: 0 auto;
    aspect-ratio: 5 / 3;
}

.line-graph-container svg {
    width: 100%;
    height: 100%;
}

.graph-axis {
    stroke: var(--on-surface);
    stroke-width: 1.5;
}

.graph-gridline {
    stroke: var(--surface-container-highest);
    stroke-width: 0.5;
    stroke-dasharray: 3 3;
}

.graph-line {
    stroke: var(--primary);
    stroke-width: 2.5;
    fill: none;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.graph-area {
    fill: rgba(0, 62, 199, 0.06);
}

.graph-dot {
    fill: var(--primary);
    r: 4;
    stroke: var(--surface);
    stroke-width: 2;
}

.graph-dot.highlight {
    fill: var(--error);
    r: 6;
    animation: coord-pulse 1.2s ease-in-out infinite alternate;
}

.graph-label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 9px;
    fill: var(--on-surface-variant);
}

.graph-label-x {
    text-anchor: middle;
    dominant-baseline: hanging;
}

.graph-label-y {
    text-anchor: end;
    dominant-baseline: central;
}

.graph-title {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 12px;
    fill: var(--on-surface);
    text-anchor: middle;
    font-weight: 600;
}

/* ============================================================
   Compound Shape SVG (Measurement)
   ============================================================ */
.compound-shape-container {
    width: 100%;
    max-width: 400px;
    margin: 0 auto;
}

.compound-shape-container svg {
    width: 100%;
    height: auto;
}

.shape-fill {
    fill: rgba(0, 62, 199, 0.08);
    stroke: var(--primary);
    stroke-width: 2;
}

.shape-dimension {
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    fill: var(--on-surface);
    font-weight: 700;
}

.shape-dim-line {
    stroke: var(--outline);
    stroke-width: 1;
    stroke-dasharray: 4 2;
    marker-start: url(#arrow-start);
    marker-end: url(#arrow-end);
}

/* ============================================================
   Probability Options (Checkboxes / Marble Bags)
   ============================================================ */
.probability-options {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.probability-options label {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius-default);
    font-size: 0.9rem;
    transition: var(--transition);
    cursor: pointer;
}

.probability-options label:hover {
    background-color: var(--surface-container-low);
}

.probability-options input:checked + span {
    color: var(--primary);
    font-weight: 600;
}

.marble-bag {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    padding: 12px;
    background-color: var(--surface-container-low);
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius-md);
    max-width: 240px;
}

.marble {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    border: 2px solid rgba(0, 0, 0, 0.1);
}

.marble.red { background: radial-gradient(circle at 35% 35%, #ff6b6b, #c0392b); }
.marble.blue { background: radial-gradient(circle at 35% 35%, #74b9ff, #0984e3); }
.marble.green { background: radial-gradient(circle at 35% 35%, #55efc4, #00b894); }
.marble.yellow { background: radial-gradient(circle at 35% 35%, #ffeaa7, #fdcb6e); }

/* Dice face display */
.dice-display {
    width: 64px;
    height: 64px;
    background-color: var(--surface);
    border: 2px solid var(--outline-variant);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-weight: 700;
    font-family: 'Space Grotesk', sans-serif;
    color: var(--on-surface);
    box-shadow: var(--shadow-sm);
}

/* Outcome checklist grid */
.outcome-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.outcome-chip {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius-full);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    transition: var(--transition);
    cursor: pointer;
}

.outcome-chip:hover {
    background-color: var(--surface-container-low);
}

.outcome-chip.selected {
    background-color: var(--on-primary-container);
    border-color: var(--primary);
    color: var(--primary);
    font-weight: 700;
}

/* MCS probability widgets (Phase 3a Slice 5) */
.mcs-marble-bag,
.mcs-dice-coin-lab,
.mcs-spinner-widget {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    width: 100%;
}

.mcs-marble-bag-board,
.mcs-dice-coin-lab-visual,
.mcs-spinner-visual {
    margin: 0 auto;
}

.mcs-dice-coin-lab-controls,
.mcs-spinner-controls {
    width: 100%;
    max-width: 360px;
}

.mcs-spinner-caption {
    font-size: 0.85rem;
    color: var(--on-surface-variant);
    text-align: center;
    margin: 0 8px;
    max-width: 360px;
}

.mcs-outcome-grid {
    justify-content: center;
}

.mcs-experiment-tally {
    width: 100%;
    max-width: 320px;
}

.mcs-run-trials-btn {
    margin: 4px auto 0;
}

.mcs-marble-bag-solution-glow,
.mcs-dice-coin-lab-solution-glow,
.mcs-spinner-solution-glow {
    box-shadow: 0 0 0 3px rgba(5, 150, 105, 0.35);
    border-radius: var(--radius-md);
}

/* ============================================================
   Decimal Keypad Extension
   ============================================================ */
.keypad-btn.decimal-key {
    font-size: 1.8rem;
    font-weight: 800;
}

/* ============================================================
   Factor Pair Grid
   ============================================================ */
.factor-pair-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: 8px;
}

.factor-pair-slot {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 10px;
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius-default);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
}

.factor-pair-slot input {
    width: 40px;
    text-align: center;
    font-size: 0.9rem;
}

/* ============================================================
   Time Conversion Display
   ============================================================ */
.time-display {
    display: flex;
    align-items: center;
    gap: 16px;
}

.time-clock {
    background-color: var(--surface-container-low);
    border: 2px solid var(--primary);
    border-radius: var(--radius-lg);
    padding: 12px 20px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: 0.05em;
}

.time-label {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--on-surface-variant);
    text-transform: uppercase;
}

/* ============================================================
   Responsive Adjustments
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
    .coordinate-point.target,
    .graph-dot.highlight {
        animation: none;
    }
}

/* ============================================================
   YEAR 5 EXTRA WIDGETS
   ============================================================ */

/* Fractions Display */
.fraction-display {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    font-family: 'JetBrains Mono', monospace;
    font-weight: 700;
    line-height: 1;
    vertical-align: middle;
}

.fraction-display .frac-num, 
.fraction-display .frac-den {
    padding: 2px 6px;
}

.fraction-display .frac-line {
    width: 100%;
    height: 2px;
    background-color: var(--on-surface);
}

/* Number Grid 1-50 */
.number-grid-50 {
    display: grid;
    grid-template-columns: repeat(10, 1fr);
    gap: 6px;
    max-width: 440px;
    margin: 0 auto;
}

/* Protractor and Angles */
.protractor-container {
    width: 100%;
    max-width: 360px;
    margin: 0 auto;
}

.protractor-container svg {
    width: 100%;
    height: auto;
}

.angle-sector {
    fill: rgba(0, 62, 199, 0.1);
    stroke: var(--primary);
    stroke-width: 1;
}

.angle-arm {
    stroke: var(--on-surface);
    stroke-width: 2;
    stroke-linecap: round;
}

.angle-arm.rotated {
    stroke: var(--primary);
    stroke-width: 2.5;
}

.protractor-tick {
    stroke: var(--outline);
    stroke-width: 0.5;
}

.protractor-label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 8px;
    fill: var(--outline);
}

/* Net Options Grid */
.net-options-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    max-width: 480px;
    margin: 0 auto;
}

.net-option {
    border: 2px solid var(--outline-variant);
    border-radius: var(--radius-md);
    padding: 12px;
    transition: var(--transition);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    aspect-ratio: 4/3;
    background-color: var(--surface-container-low);
}

.net-option:hover {
    border-color: var(--primary);
    background-color: var(--on-primary-container);
}

.net-option.selected {
    border-color: var(--primary);
    background-color: var(--on-primary-container);
    box-shadow: var(--shadow-md);
}

.net-option svg {
    width: 100%;
    height: 100%;
}

.net-face {
    fill: rgba(0, 62, 199, 0.08);
    stroke: var(--primary);
    stroke-width: 1.5;
}

/* Bar Chart Container */
.bar-chart-container {
    width: 100%;
    max-width: 500px;
    margin: 0 auto;
    aspect-ratio: 5 / 3;
}

.bar-chart-container svg {
    width: 100%;
    height: 100%;
}

.chart-bar {
    fill: var(--primary);
    rx: 2;
}

.chart-bar.highlight {
    fill: var(--tertiary);
}

.chart-bar-label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 9px;
    fill: var(--on-surface-variant);
    text-anchor: middle;
}

/* Chance Experiment Tally */
.experiment-tally {
    display: flex;
    gap: 8px;
    align-items: flex-end;
    justify-content: center;
    padding: 12px;
    background-color: var(--surface-container-low);
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius-md);
    max-width: 400px;
    margin: 0 auto;
}

.tally-bar-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.tally-bar {
    width: 32px;
    background-color: var(--primary);
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
    transition: height 0.3s ease;
}

.tally-label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    color: var(--on-surface-variant);
    font-weight: 600;
}

.tally-count {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--primary);
}

.coin-icon, 
.die-icon {
    width: 64px;
    height: 64px;
    background-color: var(--surface);
    border: 2px solid var(--outline-variant);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    font-weight: 700;
    font-family: 'Space Grotesk', sans-serif;
    margin: 0 auto 12px;
    transition: transform 0.1s ease;
}

.die-icon {
    border-radius: var(--radius-md);
}

.fraction-display .frac-den {
    padding: 2px 6px;
}

.fraction-display .frac-line {
    width: 100%;
    height: 2px;
    background-color: var(--on-surface);
}

/* Number Grid 1-50 */
.number-grid-50 {
    display: grid;
    grid-template-columns: repeat(10, 1fr);
    gap: 6px;
    max-width: 440px;
    margin: 0 auto;
}

/* Protractor and Angles */
.protractor-container {
    width: 100%;
    max-width: 360px;
    margin: 0 auto;
}

.protractor-container svg {
    width: 100%;
    height: auto;
}

.angle-sector {
    fill: rgba(0, 62, 199, 0.1);
    stroke: var(--primary);
    stroke-width: 1;
}

.angle-arm {
    stroke: var(--on-surface);
    stroke-width: 2;
    stroke-linecap: round;
}

.angle-arm.rotated {
    stroke: var(--primary);
    stroke-width: 2.5;
}

.protractor-tick {
    stroke: var(--outline);
    stroke-width: 0.5;
}

.protractor-label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 8px;
    fill: var(--outline);
}

/* Net Options Grid */
.net-options-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    max-width: 480px;
    margin: 0 auto;
}

.net-option {
    border: 2px solid var(--outline-variant);
    border-radius: var(--radius-md);
    padding: 12px;
    transition: var(--transition);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    aspect-ratio: 4/3;
    background-color: var(--surface-container-low);
}

.net-option:hover {
    border-color: var(--primary);
    background-color: var(--on-primary-container);
}

.net-option.selected {
    border-color: var(--primary);
    background-color: var(--on-primary-container);
    box-shadow: var(--shadow-md);
}

.net-option svg {
    width: 100%;
    height: 100%;
}

.net-face {
    fill: rgba(0, 62, 199, 0.08);
    stroke: var(--primary);
    stroke-width: 1.5;
}

/* Bar Chart Container */
.bar-chart-container {
    width: 100%;
    max-width: 500px;
    margin: 0 auto;
    aspect-ratio: 5 / 3;
}

.bar-chart-container svg {
    width: 100%;
    height: 100%;
}

.chart-bar {
    fill: var(--primary);
    rx: 2;
}

.chart-bar.highlight {
    fill: var(--tertiary);
}

.chart-bar-label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 9px;
    fill: var(--on-surface-variant);
    text-anchor: middle;
}

/* Chance Experiment Tally */
.experiment-tally {
    display: flex;
    gap: 8px;
    align-items: flex-end;
    justify-content: center;
    padding: 12px;
    background-color: var(--surface-container-low);
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius-md);
    max-width: 400px;
    margin: 0 auto;
}

.tally-bar-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.tally-bar {
    width: 32px;
    background-color: var(--primary);
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
    transition: height 0.3s ease;
}

.tally-label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    color: var(--on-surface-variant);
    font-weight: 600;
}

.tally-count {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--primary);
}

.coin-icon, 
.die-icon {
    width: 64px;
    height: 64px;
    background-color: var(--surface);
    border: 2px solid var(--outline-variant);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    font-weight: 700;
    font-family: 'Space Grotesk', sans-serif;
    margin: 0 auto 12px;
    transition: transform 0.1s ease;
}

.die-icon {
    border-radius: var(--radius-md);
}

.coin-icon.flipping, 
.die-icon.rolling {
    animation: flip-spin 0.15s linear infinite;
}

@keyframes flip-spin {
    0% { transform: rotateY(0deg); }
    100% { transform: rotateY(180deg); }
}

/* ============================================================
   Angle Multiple-Choice Grid
   ============================================================ */
.angle-mc-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    width: 100%;
    max-width: 340px;
    margin: 0 auto;
}

.angle-mc-option {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 14px 10px;
    border: 2px solid var(--outline-variant);
    border-radius: var(--radius-default);
    background-color: var(--surface);
    cursor: pointer;
    transition: var(--transition);
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--on-surface);
    user-select: none;
}

.angle-mc-option:hover {
    border-color: var(--primary-container);
    background-color: var(--on-primary-container);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    cursor: pointer;
}

.angle-mc-option.selected {
    border-color: var(--primary);
    background-color: var(--on-primary-container);
    color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 62, 199, 0.15);
}

.angle-mc-value {
    pointer-events: none;
}

/* ============================================================
   Achievement Certificate Modal
   ============================================================ */
.cert-modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(10, 12, 20, 0.65);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    animation: cert-overlay-in 0.25s ease;
}

@keyframes cert-overlay-in {
    from { opacity: 0; }
    to   { opacity: 1; }
}

.cert-modal-overlay.closing {
    animation: cert-overlay-out 0.2s ease forwards;
}

@keyframes cert-overlay-out {
    from { opacity: 1; }
    to   { opacity: 0; }
}

.cert-card {
    background: #ffffff;
    border-radius: 16px;
    box-shadow: 0 32px 80px rgba(0, 0, 0, 0.3);
    max-width: 560px;
    width: calc(100vw - 32px);
    padding: 0;
    overflow: hidden;
    animation: cert-card-in 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    display: flex;
    flex-direction: column;
}

@keyframes cert-card-in {
    from { transform: scale(0.88) translateY(20px); opacity: 0; }
    to   { transform: scale(1) translateY(0); opacity: 1; }
}

/* Certificate header band */
.cert-header-band {
    background: linear-gradient(135deg, #003ec7 0%, #0052ff 60%, #005471 100%);
    padding: 28px 32px 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
}

.cert-star-row {
    display: flex;
    gap: 6px;
    font-size: 1.2rem;
}

.cert-title {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 4px;
}

.cert-achievement-label {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    color: #ffffff;
    text-align: center;
    line-height: 1.2;
}

/* Certificate body */
.cert-body {
    padding: 24px 32px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    background: #fafbff;
    border-bottom: 1px solid #e0e3f0;
}

.cert-badge-display {
    font-size: 4rem;
    line-height: 1;
    filter: drop-shadow(0 4px 12px rgba(0, 62, 199, 0.2));
    animation: cert-badge-pop 0.4s cubic-bezier(0.16, 1, 0.3, 1) 0.15s both;
}

@keyframes cert-badge-pop {
    from { transform: scale(0.5); opacity: 0; }
    to   { transform: scale(1);   opacity: 1; }
}

.cert-awarded-to {
    font-family: 'Work Sans', sans-serif;
    font-size: 0.85rem;
    color: #737688;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.cert-student-name {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.6rem;
    font-weight: 700;
    color: #003ec7;
    letter-spacing: 0.02em;
    display: flex;
    justify-content: center;
    width: 100%;
}

.cert-name-input {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.6rem;
    font-weight: 700;
    color: #003ec7;
    text-align: center;
    border: none;
    border-bottom: 2px dashed #c3c5d9;
    background: transparent;
    width: 320px;
    max-width: 90%;
    outline: none;
    text-transform: uppercase;
    padding: 2px;
    margin: 4px 0;
    transition: border-bottom-color 0.2s ease;
}

.cert-name-input:focus {
    border-bottom-color: #003ec7;
}

.cert-name-input::placeholder {
    color: #b0b3c7;
    font-weight: 500;
    font-size: 1.1rem;
    letter-spacing: 0.05em;
}

.cert-name-print-only {
    display: none;
}

.cert-description {
    font-family: 'Work Sans', sans-serif;
    font-size: 0.9rem;
    color: #434656;
    text-align: center;
    max-width: 380px;
    line-height: 1.55;
}

.cert-date-row {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.72rem;
    color: #9499b0;
    letter-spacing: 0.05em;
}

/* Certificate footer */
.cert-footer {
    padding: 16px 24px;
    display: flex;
    gap: 10px;
    justify-content: flex-end;
    background: #ffffff;
}

.cert-btn {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 0.85rem;
    font-weight: 700;
    padding: 10px 20px;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
    letter-spacing: 0.03em;
    text-transform: uppercase;
}

.cert-btn-close {
    background: transparent;
    color: #737688;
    border: 1px solid #c3c5d9;
}

.cert-btn-close:hover {
    background: #f3f3f6;
    color: #1a1c1e;
}

.cert-btn-print {
    background: linear-gradient(135deg, #003ec7, #0052ff);
    color: #ffffff;
    box-shadow: 0 4px 16px rgba(0, 62, 199, 0.3);
}

.cert-btn-print:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 62, 199, 0.4);
}

/* Locked badge click feedback */
.badge-item.unlocked {
    cursor: pointer;
}

.badge-item.unlocked:hover {
    transform: scale(1.12);
    box-shadow: var(--shadow-md);
}

.badge-item.unlocked:active {
    transform: scale(1.04);
}

/* ============================================================
   Print Styles — Certificate
   ============================================================ */
@media print {
    body > *:not(#cert-print-root) { display: none !important; }

    #cert-print-root {
        display: flex !important;
        position: fixed;
        inset: 0;
        align-items: center;
        justify-content: center;
        background: #fff;
    }

    .cert-modal-overlay {
        position: static;
        background: none;
        backdrop-filter: none;
    }

    .cert-card {
        box-shadow: none;
        border: 2px solid #003ec7;
        max-width: 480px;
        width: 480px;
    }

    .cert-footer { display: none; }
    .cert-header-band { -webkit-print-color-adjust: exact; print-color-adjust: exact; }

    .cert-name-input { display: none !important; }
    .cert-name-print-only {
        display: block !important;
        font-family: 'Space Grotesk', sans-serif;
        font-size: 1.6rem;
        font-weight: 700;
        color: #003ec7;
        text-align: center;
        text-transform: uppercase;
        margin: 4px 0;
        border: none !important;
    }
}

/* ============================================================
   Portal Grade Selector Styles
   ============================================================ */
.portal-main-heading {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--primary);
    text-align: center;
    margin-bottom: 8px;
    letter-spacing: -0.02em;
}

.portal-main-subtitle {
    font-family: 'Work Sans', sans-serif;
    font-size: 1rem;
    color: var(--on-surface-variant);
    text-align: center;
    max-width: 600px;
    margin: 0 auto 32px auto;
}

.portal-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

@media (max-width: 1024px) {
    .portal-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .portal-grid {
        grid-template-columns: 1fr;
    }
}

.portal-card {
    background-color: var(--surface);
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius-lg);
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.portal-card.active:hover {
    transform: translateY(-4px);
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
}

.portal-card.offline {
    opacity: 0.55;
    background-color: var(--surface-container-low);
    border-style: dashed;
}

.portal-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 4px;
}

.grade-title {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--on-surface);
}

.grade-desc {
    font-family: 'Work Sans', sans-serif;
    font-size: 0.85rem;
    color: var(--on-surface-variant);
    line-height: 1.5;
    flex-grow: 1;
}

.status-pill {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.65rem;
    font-weight: 700;
    padding: 4px 8px;
    border-radius: var(--radius-full);
    letter-spacing: 0.05em;
}

.status-pill.online {
    background-color: var(--on-primary-container);
    color: var(--primary);
}

.status-pill.offline {
    background-color: var(--surface-container-highest);
    color: var(--outline);
}

.portal-actions {
    display: flex;
    gap: 10px;
    margin-top: auto;
}

.btn-portal {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 0.85rem;
    font-weight: 600;
    text-align: center;
    padding: 10px 14px;
    border-radius: var(--radius-default);
    text-decoration: none;
    transition: var(--transition);
    flex: 1;
    border: 1px solid transparent;
}

.btn-portal.primary {
    background-color: var(--primary);
    color: var(--on-primary);
}

.btn-portal.primary:hover {
    background-color: var(--primary-container);
    box-shadow: 0px 4px 12px rgba(0, 82, 255, 0.15);
    cursor: pointer;
}

.btn-portal.secondary {
    background-color: var(--surface);
    border-color: var(--outline-variant);
    color: var(--on-surface-variant);
}

.btn-portal.secondary:hover {
    border-color: var(--primary);
    color: var(--primary);
    background-color: var(--on-primary-container);
    cursor: pointer;
}

.btn-portal.disabled {
    background-color: var(--surface-container-highest);
    color: var(--outline);
    border-color: transparent;
    cursor: not-allowed;
    width: 100%;
}

/* ============================================================
   Year 3 Specific Widgets
   ============================================================ */
.pulse-ring {
    transform-origin: center;
    animation: pulseRing 1.5s infinite ease-out;
}

@keyframes pulseRing {
    0% {
        transform: scale(0.6);
        opacity: 1;
    }
    100% {
        transform: scale(1.4);
        opacity: 0;
    }
}

.prob-choice-btn {
    min-width: 100px;
    padding: 8px 16px;
    font-size: 0.9rem !important;
}

/* ============================================================
   Year 4 Specific Widgets
   ============================================================ */

/* Symmetry Painting Board */
.symmetry-board-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.symmetry-grid {
    display: grid;
    gap: 2px;
    background-color: var(--outline-variant);
    padding: 2px;
    border-radius: var(--radius-md);
    overflow: hidden;
    position: relative;
    user-select: none;
}

.symmetry-cell {
    width: 32px;
    height: 32px;
    background-color: var(--surface);
    transition: var(--transition);
    cursor: pointer;
    border-radius: 2px;
}

.symmetry-cell:hover {
    background-color: var(--surface-container-high);
}

.symmetry-cell.active {
    background-color: var(--primary);
    box-shadow: inset 0 0 0 2px var(--on-primary);
}

.symmetry-cell.pre-filled {
    background-color: var(--tertiary);
    cursor: not-allowed;
}

.symmetry-cell.error-state {
    background-color: var(--error);
}

/* Mirror line axis */
.symmetry-axis-line {
    position: absolute;
    background-color: #dc2626; /* bright red */
    z-index: 10;
    pointer-events: none;
}

.symmetry-axis-line.vertical {
    top: 0;
    bottom: 0;
    width: 4px;
    left: calc(50% - 2px);
    animation: axisGlowVertical 2s infinite alternate;
}

.symmetry-axis-line.horizontal {
    left: 0;
    right: 0;
    height: 4px;
    top: calc(50% - 2px);
    animation: axisGlowHorizontal 2s infinite alternate;
}

@keyframes axisGlowVertical {
    from { box-shadow: 0 0 4px rgba(220, 38, 38, 0.4); }
    to { box-shadow: 0 0 12px rgba(220, 38, 38, 0.9); }
}

@keyframes axisGlowHorizontal {
    from { box-shadow: 0 0 4px rgba(220, 38, 38, 0.4); }
    to { box-shadow: 0 0 12px rgba(220, 38, 38, 0.9); }
}

/* Alphanumeric Coordinate Grid */
.mcs-alpha-grid {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.mcs-alpha-grid-school-map {
    gap: 8px;
}

.school-map-title {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--primary);
    text-align: center;
}

.mcs-alpha-grid-no-labels .alpha-grid-cell:not(.label-cell) {
    min-height: 56px;
}

.school-map-marker {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    line-height: 1.1;
    pointer-events: none;
}

.school-map-marker-icon {
    font-size: 1.15rem;
    line-height: 1;
}

.school-map-marker-label {
    font-size: 0.55rem;
    font-weight: 700;
    text-align: center;
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    color: var(--on-surface);
}

.mcs-alpha-grid-school-map .alpha-grid-cell.selected {
    background: color-mix(in srgb, var(--primary) 18%, var(--surface-container));
    outline: 2px solid var(--primary);
}

.mcs-alpha-grid-board {
    outline: none;
    border-radius: var(--radius-default);
    padding: 4px;
}

.mcs-alpha-grid-board.mcs-alpha-grid-focused {
    outline: 3px solid var(--mcs-focus-ring);
    outline-offset: 2px;
}

.mcs-alpha-grid-board.mcs-alpha-grid-solution-glow {
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--mcs-correct) 45%, transparent);
}

button.alpha-grid-cell {
    appearance: none;
    padding: 0;
    margin: 0;
    font: inherit;
    color: inherit;
}

button.alpha-grid-cell:focus-visible {
    outline: 3px solid var(--mcs-focus-ring);
    outline-offset: 1px;
}

.alpha-grid-container {
    display: grid;
    border: 1px solid var(--outline-variant);
    background-color: var(--surface-container-low);
    border-radius: var(--radius-md);
    padding: 8px;
    gap: 4px;
}

.alpha-grid-cell {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--surface);
    border: 1px solid var(--surface-container-high);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--on-surface-variant);
    transition: var(--transition);
    border-radius: var(--radius-sm);
    position: relative;
    cursor: pointer;
}

.alpha-grid-cell.label-cell {
    background: transparent;
    border: none;
    cursor: default;
    font-weight: 600;
    font-size: 0.8rem;
    color: var(--outline);
}

.alpha-grid-cell:not(.label-cell):hover {
    background-color: var(--on-primary-container);
    border-color: var(--primary);
    color: var(--primary);
}

.alpha-grid-cell.selected {
    background-color: var(--primary);
    border-color: var(--primary);
    color: var(--on-primary);
}

.alpha-grid-cell .landmark-icon {
    font-size: 1.4rem;
    pointer-events: none;
}

.mcs-alpha-grid-titled .mcs-alpha-grid-layout {
    display: flex;
    align-items: stretch;
    gap: 8px;
    width: 100%;
    justify-content: center;
}

.mcs-alpha-grid-titled .mcs-alpha-grid-column {
    display: flex;
    flex-direction: column;
    gap: 4px;
    align-items: center;
}

.alpha-grid-axis-y-title {
    display: flex;
    align-items: center;
    justify-content: center;
    writing-mode: vertical-rl;
    transform: rotate(180deg);
    font-family: 'Space Grotesk', sans-serif;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--outline);
    padding: 4px 2px;
    align-self: center;
}

.alpha-grid-axis-x-title {
    width: 100%;
    text-align: center;
    font-family: 'Space Grotesk', sans-serif;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--outline);
    padding-bottom: 2px;
}

.mcs-alpha-grid-readonly .alpha-grid-cell-readonly {
    cursor: default;
    pointer-events: none;
}

.mcs-alpha-grid-readonly .alpha-grid-cell-readonly:hover {
    background-color: var(--surface);
    border-color: var(--surface-container-high);
    color: var(--on-surface-variant);
}

/* Pathway trace — blank white grid; student taps cells orange while working */
.mcs-alpha-grid-path-trace .alpha-grid-cell:not(.label-cell):not(.alpha-grid-traced):not(.alpha-grid-route) {
    background-color: #fff;
}

.mcs-alpha-grid-path-trace .alpha-grid-cell:not(.label-cell):not(.alpha-grid-traced):not(.alpha-grid-route):hover {
    background-color: color-mix(in srgb, var(--primary) 10%, #fff);
    border-color: color-mix(in srgb, var(--primary) 35%, var(--surface-container-high));
}

.alpha-grid-cell.alpha-grid-traced {
    background-color: var(--primary);
    border-color: var(--primary);
    color: var(--on-primary);
}

.alpha-grid-trace-step {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    font-weight: 700;
    line-height: 1;
}

.alpha-grid-cell.alpha-grid-trace-start {
    box-shadow: inset 0 0 0 2px var(--tertiary, var(--primary));
}

.alpha-grid-cell.alpha-grid-trace-end {
    box-shadow: inset 0 0 0 2px var(--secondary, var(--primary));
}

.alpha-grid-cell.alpha-grid-blocked {
    background-color: color-mix(in srgb, var(--error) 18%, var(--surface));
    border-color: color-mix(in srgb, var(--error) 45%, var(--surface-container-high));
    cursor: not-allowed;
}

.mcs-route-description-label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--on-surface-variant);
    margin: 12px 0 8px;
}

.mcs-route-description-step {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
}

.mcs-route-description-controls {
    display: flex;
    gap: 8px;
    margin-top: 8px;
}

.alpha-grid-cell.alpha-grid-route {
    background-color: color-mix(in srgb, var(--primary) 12%, var(--surface));
    border-color: color-mix(in srgb, var(--primary) 45%, var(--surface-container-high));
}

.alpha-grid-cell.alpha-grid-route-start {
    box-shadow: inset 0 0 0 2px var(--primary);
}

.alpha-grid-cell.alpha-grid-route-end,
.alpha-grid-cell.alpha-grid-solution-end {
    background-color: var(--primary);
    border-color: var(--primary);
    color: var(--on-primary);
}

.alpha-grid-route-step {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    font-weight: 700;
    line-height: 1;
}

.alpha-grid-cell.alpha-grid-route-end .alpha-grid-route-step,
.alpha-grid-cell.alpha-grid-solution-end .alpha-grid-route-step {
    color: inherit;
}

/* Likelihood draggable scale */
.likelihood-spectrum {
    display: flex;
    flex-direction: column;
    gap: 20px;
    width: 100%;
    padding: 16px;
    background-color: var(--surface-container-low);
    border-radius: var(--radius-lg);
    border: 1px solid var(--outline-variant);
}

.likelihood-line-container {
    position: relative;
    height: 60px;
    margin: 10px 20px;
}

.likelihood-track {
    position: absolute;
    top: 30px;
    left: 0;
    right: 0;
    height: 4px;
    background-color: var(--outline-variant);
    border-radius: 2px;
}

.likelihood-anchor {
    position: absolute;
    top: 15px;
    display: flex;
    flex-direction: column;
    align-items: center;
    transform: translateX(-50%);
}

.likelihood-anchor-tick {
    width: 2px;
    height: 12px;
    background-color: var(--on-surface);
}

.likelihood-anchor-label {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 0.75rem;
    font-weight: 600;
    margin-top: 6px;
    color: var(--on-surface-variant);
}

.likelihood-items-dock {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    padding: 12px;
    background-color: var(--surface);
    border: 1px dashed var(--outline-variant);
    border-radius: var(--radius-md);
    min-height: 80px;
}

.likelihood-card {
    background-color: var(--surface-container-low);
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius-default);
    padding: 8px 12px;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: grab;
    user-select: none;
    transition: var(--transition);
}

.likelihood-card:hover {
    border-color: var(--primary);
    background-color: var(--on-primary-container);
    color: var(--primary);
    transform: scale(1.03);
}

.likelihood-card:active {
    cursor: grabbing;
}

.likelihood-dropzone {
    position: absolute;
    top: 10px;
    width: 60px;
    height: 36px;
    border: 2px dashed var(--outline-variant);
    border-radius: var(--radius-default);
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(255, 255, 255, 0.5);
    transition: var(--transition);
}

.likelihood-dropzone.hovered {
    border-color: var(--primary);
    background-color: var(--on-primary-container);
}

.likelihood-dropzone .placed-card {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: bold;
    color: var(--primary);
    text-align: center;
    padding: 2px;
}

/* ============================================================
   CURRICULUM SUBDIVISION & ACHIEVEMENT SYSTEM STYLES
   ============================================================ */

/* Strand Colour Utilities */
.strand-bg-number      { background-color: rgba(0, 62, 199, 0.05); }
.strand-bg-algebra     { background-color: rgba(180, 83, 9, 0.05); }
.strand-bg-measurement { background-color: rgba(0, 84, 113, 0.05); }
.strand-bg-space       { background-color: rgba(186, 26, 26, 0.05); }
.strand-bg-statistics  { background-color: rgba(88, 95, 106, 0.05); }
.strand-bg-probability { background-color: rgba(5, 150, 105, 0.05); }

.strand-border-number      { border-color: rgba(0, 62, 199, 0.3) !important; }
.strand-border-algebra     { border-color: rgba(180, 83, 9, 0.3) !important; }
.strand-border-measurement { border-color: rgba(0, 84, 113, 0.3) !important; }
.strand-border-space       { border-color: rgba(186, 26, 26, 0.3) !important; }
.strand-border-statistics  { border-color: rgba(88, 95, 106, 0.3) !important; }
.strand-border-probability { border-color: rgba(5, 150, 105, 0.3) !important; }

/* Active Glow States */
.badge-item.unlocked.number      { background-color: rgba(0, 62, 199, 0.1); border-color: #003ec7; box-shadow: 0 0 10px rgba(0, 62, 199, 0.25); filter: none; }
.badge-item.unlocked.algebra     { background-color: rgba(180, 83, 9, 0.1); border-color: #b45309; box-shadow: 0 0 10px rgba(180, 83, 9, 0.25); filter: none; }
.badge-item.unlocked.measurement { background-color: rgba(0, 84, 113, 0.1); border-color: #005471; box-shadow: 0 0 10px rgba(0, 84, 113, 0.25); filter: none; }
.badge-item.unlocked.space       { background-color: rgba(186, 26, 26, 0.1); border-color: #ba1a1a; box-shadow: 0 0 10px rgba(186, 26, 26, 0.25); filter: none; }
.badge-item.unlocked.statistics  { background-color: rgba(88, 95, 106, 0.1); border-color: #585f6a; box-shadow: 0 0 10px rgba(88, 95, 106, 0.25); filter: none; }
.badge-item.unlocked.probability { background-color: rgba(5, 150, 105, 0.1); border-color: #059669; box-shadow: 0 0 10px rgba(5, 150, 105, 0.25); filter: none; }

.badge-item.locked {
    filter: grayscale(1) opacity(0.35);
    cursor: not-allowed;
}

/* Shimmering Gold Glow for Strand Mastery Grand Badges */
.gold-glow-border {
    border: 2px solid #ffd700 !important;
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.15), rgba(218, 165, 32, 0.05)) !important;
    box-shadow: 0 0 15px rgba(255, 215, 0, 0.45) !important;
    animation: goldShimmer 3s infinite alternate;
}

@keyframes goldShimmer {
    0% { box-shadow: 0 0 12px rgba(255, 215, 0, 0.3); }
    100% { box-shadow: 0 0 22px rgba(255, 215, 0, 0.6); }
}

/* Trophy Room Overlay Modal */
.trophy-modal-backdrop {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: rgba(26, 28, 30, 0.65);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.trophy-modal-backdrop.active {
    opacity: 1;
    pointer-events: auto;
}

.trophy-window {
    width: 90%;
    max-width: 1100px;
    height: 85%;
    max-height: 850px;
    background-color: var(--surface-container-lowest);
    border: 2px solid var(--outline-variant);
    border-radius: var(--radius-xl);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transform: translateY(40px) scale(0.95);
    transition: transform 0.3s cubic-bezier(0.25, 1, 0.5, 1);
}

.trophy-modal-backdrop.active .trophy-window {
    transform: translateY(0) scale(1);
}

.trophy-header {
    background-color: var(--primary);
    color: white;
    padding: 20px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.trophy-header-title {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.6rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 10px;
}

.trophy-btn-close {
    background: transparent;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    transition: opacity 0.2s;
}

.trophy-btn-close:hover {
    opacity: 0.8;
}

.trophy-tabs {
    display: flex;
    background-color: var(--surface-container);
    border-bottom: 1px solid var(--outline-variant);
    padding: 0 20px;
}

.trophy-tab-btn {
    background: transparent;
    border: none;
    padding: 14px 20px;
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--on-surface-variant);
    cursor: pointer;
    border-bottom: 3px solid transparent;
    transition: all 0.2s;
}

.trophy-tab-btn:hover {
    color: var(--primary);
}

.trophy-tab-btn.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

.trophy-body {
    flex-grow: 1;
    overflow-y: auto;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.trophy-summary-section {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 20px;
    margin-bottom: 10px;
}

.trophy-stat-card {
    background-color: var(--surface-container-low);
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius-lg);
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
}

.trophy-stat-val {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
}

.trophy-stat-label {
    font-size: 0.8rem;
    color: var(--on-surface-variant);
    font-weight: 600;
}

.grand-showcase-container {
    background-color: var(--surface-container-low);
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius-lg);
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.grand-showcase-title {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1rem;
    font-weight: 700;
    color: var(--primary);
}

.grand-showcase-grid {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.grand-badge-icon {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    cursor: pointer;
    position: relative;
    transition: transform 0.2s;
}

.grand-badge-icon:hover {
    transform: scale(1.1);
}

.grand-badge-icon.locked {
    filter: grayscale(1) opacity(0.2);
    border: 1px dashed var(--outline);
    background: transparent !important;
    box-shadow: none !important;
}

.trophy-strands-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

.trophy-strand-card {
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius-lg);
    background-color: var(--surface-container-lowest);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.trophy-strand-header {
    padding: 14px 20px;
    color: white;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
}

.trophy-strand-body {
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.trophy-strand-progress {
    display: flex;
    align-items: center;
    gap: 12px;
}

.progress-label {
    font-size: 0.8rem;
    font-weight: 700;
    width: 120px;
}

.progress-bar-wide {
    flex-grow: 1;
    height: 10px;
    background-color: var(--surface-container-highest);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-bar-fill-wide {
    height: 100%;
    transition: width 0.5s ease;
}

.trophy-badge-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(68px, 1fr));
    gap: 12px;
}

.trophy-badge-grid .badge-item {
    gap: 2px;
}

.trophy-badge-emoji {
    line-height: 1;
}

.trophy-context-ticks {
    font-size: 0.55rem;
    letter-spacing: 0.05em;
    color: var(--on-surface-variant);
    line-height: 1;
}

.badge-item.unlocked .trophy-context-ticks {
    color: var(--primary);
}

.trophy-badge-grid .badge-item,
.grand-badge-icon {
    cursor: pointer;
}

/* Badge Progress Detail Modal */
.badge-progress-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(26, 28, 30, 0.65);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2500;
    padding: 20px;
    animation: fadeIn 0.25s ease forwards;
}

.badge-progress-overlay.closing {
    animation: fadeOut 0.2s ease forwards;
}

.badge-progress-card {
    width: 100%;
    max-width: 420px;
    background-color: var(--surface-container-lowest);
    border: 1px solid var(--outline-variant);
    border-top: 4px solid var(--primary);
    border-radius: var(--radius-lg);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
    overflow: hidden;
    font-family: 'Work Sans', sans-serif;
    color: var(--on-surface);
}

.badge-progress-header {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 18px 20px;
    color: white;
}

.badge-progress-emoji {
    font-size: 2.2rem;
    line-height: 1;
    flex-shrink: 0;
}

.badge-progress-title-block {
    flex-grow: 1;
    min-width: 0;
}

.badge-progress-title {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.15rem;
    font-weight: 700;
    line-height: 1.2;
}

.badge-progress-code {
    font-size: 0.72rem;
    font-weight: 600;
    opacity: 0.9;
    letter-spacing: 0.04em;
    margin-top: 2px;
}

.badge-progress-status {
    flex-shrink: 0;
    font-family: 'Space Grotesk', sans-serif;
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    background-color: rgba(255, 255, 255, 0.2);
}

.badge-progress-status.locked {
    background-color: rgba(0, 0, 0, 0.25);
}

.badge-progress-status.unlocked {
    background-color: rgba(255, 255, 255, 0.3);
}

.badge-progress-body {
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    background-color: color-mix(in srgb, #ffffff 88%, var(--badge-strand-colour, #003ec7) 12%);
}

.badge-progress-desc {
    margin: 0;
    font-size: 0.9rem;
    line-height: 1.5;
    color: var(--on-surface-variant);
}

.badge-progress-section {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.badge-progress-section-label {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    color: var(--on-surface-variant);
    text-transform: uppercase;
}

.badge-progress-points-row {
    display: flex;
    align-items: center;
    gap: 12px;
}

.badge-progress-points-val {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 0.95rem;
    font-weight: 700;
    min-width: 64px;
    color: var(--primary);
}

.badge-progress-bar {
    flex-grow: 1;
    height: 10px;
    background-color: var(--surface-container-highest);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.badge-progress-bar-fill {
    height: 100%;
    transition: width 0.4s ease;
    border-radius: var(--radius-full);
}

.badge-progress-context-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.badge-progress-context-row {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    border-radius: var(--radius-default);
    font-size: 0.88rem;
    border: 1px solid var(--outline-variant);
    background-color: var(--surface-container-low);
}

.badge-progress-context-row.done {
    border-color: rgba(5, 150, 105, 0.35);
    background-color: rgba(5, 150, 105, 0.08);
    color: var(--on-surface);
}

.badge-progress-context-row.missing {
    color: var(--on-surface-variant);
}

.badge-progress-context-icon {
    font-weight: 700;
    width: 16px;
    text-align: center;
    flex-shrink: 0;
}

.badge-progress-context-row.done .badge-progress-context-icon {
    color: #059669;
}

.badge-progress-missing-list {
    margin: 0;
    padding-left: 20px;
    font-size: 0.88rem;
    color: var(--on-surface-variant);
    line-height: 1.6;
}

.badge-progress-complete-msg {
    margin: 0;
    font-size: 0.88rem;
    font-weight: 600;
    color: #059669;
}

.badge-progress-footer {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    padding: 14px 20px;
    border-top: 1px solid var(--outline-variant);
    background-color: var(--surface-container-low);
}

.badge-progress-btn {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 0.85rem;
    font-weight: 700;
    padding: 10px 18px;
    border-radius: var(--radius-default);
    border: 1px solid var(--outline-variant);
    cursor: pointer;
    transition: opacity 0.2s, background-color 0.2s;
}

.badge-progress-btn-close {
    background-color: var(--surface-container-lowest);
    color: var(--on-surface);
}

.badge-progress-btn-close:hover {
    background-color: var(--surface-container);
}

.badge-progress-btn-cert {
    background-color: var(--primary);
    border-color: var(--primary);
    color: var(--on-primary);
}

.badge-progress-btn-cert:hover {
    opacity: 0.9;
}

/* Certificate Modal View Styling */
.cert-modal-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: rgba(26, 28, 30, 0.85);
    backdrop-filter: blur(12px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 3000;
    animation: fadeIn 0.25s ease forwards;
}

.cert-card {
    background-color: #fffaf0;
    border: 15px double #8a6d3b;
    border-radius: 8px;
    padding: 40px;
    width: 90%;
    max-width: 780px;
    text-align: center;
    box-shadow: 0 15px 45px rgba(0, 0, 0, 0.45);
    position: relative;
    font-family: 'Work Sans', sans-serif;
    color: #4a3e2a;
}

.cert-header-band {
    border-bottom: 2px solid #8a6d3b;
    padding-bottom: 16px;
    margin-bottom: 20px;
}

.cert-star-row {
    color: #ffd700;
    font-size: 1.5rem;
    letter-spacing: 10px;
    margin-bottom: 10px;
}

.cert-title {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.2rem;
    text-transform: uppercase;
    letter-spacing: 3px;
    color: #8a6d3b;
    font-weight: 700;
}

.cert-achievement-label {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 2.2rem;
    font-weight: 700;
    color: #003ec7;
    margin-top: 8px;
    letter-spacing: 1px;
}

.cert-badge-display {
    font-size: 4rem;
    margin: 20px 0;
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.15));
}

.cert-awarded-to {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    font-weight: 600;
}

.cert-student-name {
    margin: 15px 0 25px 0;
}

.cert-name-input {
    border: none;
    border-bottom: 2px solid #8a6d3b;
    background: transparent;
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.8rem;
    font-weight: 700;
    text-align: center;
    color: #003ec7;
    outline: none;
    width: 80%;
    text-transform: uppercase;
}

.cert-name-print-only {
    display: none;
}

.cert-description {
    font-size: 1.05rem;
    line-height: 1.6;
    max-width: 600px;
    margin: 0 auto 25px auto;
    font-style: italic;
}

.cert-date-row {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    font-weight: 700;
    border-top: 1px solid rgba(138, 109, 59, 0.3);
    padding-top: 14px;
    width: 60%;
    margin: 0 auto;
}

.cert-footer {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-top: 35px;
}

.cert-btn {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    font-size: 0.85rem;
    padding: 10px 20px;
    border-radius: var(--radius-default);
    text-transform: uppercase;
    cursor: pointer;
    transition: var(--transition);
}

.cert-btn-close {
    background-color: #eeeef0;
    border: 1px solid var(--outline-variant);
    color: var(--on-surface-variant);
}

.cert-btn-close:hover {
    background-color: var(--surface-container-high);
}

.cert-btn-print {
    background-color: var(--primary);
    border: 1px solid var(--primary);
    color: white;
}

.cert-btn-print:hover {
    background-color: var(--primary-container);
}

/* Animation Utilities */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.cert-modal-overlay.closing {
    animation: fadeOut 0.2s ease forwards;
}

@keyframes fadeOut {
    from { opacity: 1; }
    to { opacity: 0; }
}

/* ============================================================
   PRINT STYLES - A4 landscape certificate format
   ============================================================ */
@media print {
    /* Hide everything on the page except the certificate container */
    body * {
        visibility: hidden;
    }
    
    #cert-print-root,
    #cert-print-root * {
        visibility: visible;
    }
    
    #cert-print-root {
        position: absolute;
        left: 0;
        top: 0;
        width: 100vw;
        height: 100vh;
        z-index: 99999;
        display: flex !important;
        align-items: center;
        justify-content: center;
        background: white !important;
    }
    
    .cert-modal-overlay {
        position: static !important;
        background: transparent !important;
        backdrop-filter: none !important;
        width: 100% !important;
        height: 100% !important;
        display: flex !important;
        padding: 0 !important;
    }
    
    .cert-card {
        border: 20px double #8a6d3b !important;
        box-shadow: none !important;
        width: 277mm !important; /* A4 width in landscape minus margins */
        height: 190mm !important; /* A4 height in landscape minus margins */
        margin: 0 auto !important;
        page-break-inside: avoid !important;
        background-color: #fffaf0 !important;
        -webkit-print-color-adjust: exact !important;
        print-color-adjust: exact !important;
        display: flex;
        flex-direction: column;
        justify-content: center;
    }
    
    /* Hide inputs, show text */
    .cert-name-input {
        display: none !important;
    }
    
    .cert-name-print-only {
        display: inline-block !important;
        font-family: 'Space Grotesk', sans-serif;
        font-size: 2.2rem;
        font-weight: 700;
        text-transform: uppercase;
        color: #003ec7 !important;
        border-bottom: 2px solid #8a6d3b;
        padding-bottom: 4px;
        width: 80%;
    }
    
    /* Hide action buttons in printout */
    .cert-footer {
        display: none !important;
    }
    
    /* Force page settings */
    @page {
        size: A4 landscape;
        margin: 5mm;
    }
}

/* ============================================================
   YEAR 6 SPECIFIC WIDGETS & STYLING
   ============================================================ */

/* Cartesian Grid Styles for Year 6 */
.coord-gridline-quad {
    stroke: var(--outline-variant);
    stroke-width: 0.5;
}
.coord-axis-quad {
    stroke: var(--on-background);
    stroke-width: 2;
}
.coord-origin-dot {
    fill: var(--primary);
    stroke: var(--surface);
    stroke-width: 1.5;
}
.coord-cell-quad {
    fill: transparent;
    stroke: transparent;
    cursor: pointer;
}
.coord-cell-quad:hover {
    fill: rgba(5, 150, 105, 0.2);
}
.vector-arrow {
    stroke: var(--primary);
    stroke-width: 2.5;
    fill: none;
    marker-end: url(#arrow-primary);
}

/* Metric Regulator Slider */
.metric-slider-strip {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    background-color: var(--surface-container-low);
    padding: 16px;
    border-radius: var(--radius-md);
    border: 1px solid var(--outline-variant);
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.8rem;
    font-weight: 700;
}
.metric-digit-box {
    width: 36px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--surface);
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius-sm);
    position: relative;
}
.metric-decimal-dot {
    width: 12px;
    height: 12px;
    background-color: var(--error);
    border-radius: 50%;
    margin: 0 4px;
    display: inline-block;
    transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Probability Dial */
.prob-dial-container {
    padding: 20px;
    background-color: var(--surface-container-low);
    border-radius: var(--radius-lg);
    border: 1px solid var(--outline-variant);
    display: flex;
    flex-direction: column;
    gap: 20px;
}
.prob-dial-scale {
    position: relative;
    height: 24px;
    background: linear-gradient(90deg, var(--outline-variant) 0%, var(--primary) 100%);
    border-radius: var(--radius-full);
}
.prob-dial-marker {
    position: absolute;
    top: 30px;
    transform: translateX(-50%);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--on-surface-variant);
}
.prob-dial-needle {
    position: absolute;
    top: -6px;
    width: 12px;
    height: 36px;
    background-color: var(--surface);
    border: 2px solid var(--primary);
    border-radius: var(--radius-full);
    cursor: grab;
    transform: translateX(-50%);
    box-shadow: var(--shadow-sm);
}
.prob-dial-needle:active {
    cursor: grabbing;
}

/* Angle Modeller */
.angle-relations-card {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 16px;
    background-color: var(--surface-container-low);
    border-radius: var(--radius-lg);
    border: 1px solid var(--outline-variant);
    height: 240px;
}
.angle-arc-sector {
    fill: rgba(5, 150, 105, 0.12);
    stroke: var(--primary);
    stroke-width: 1.5;
    transition: fill 0.2s;
}
.angle-arc-sector.highlight {
    fill: rgba(5, 150, 105, 0.3);
    stroke-width: 2.5;
}

/* Factor Sieve */
.factor-grid-sieve {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(64px, 1fr));
    gap: 10px;
}
.sieve-number-card {
    background-color: var(--surface);
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius-default);
    padding: 12px;
    text-align: center;
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
}
.sieve-number-card:hover {
    background-color: var(--surface-container-high);
}
.sieve-number-card.selected-prime {
    background-color: var(--on-primary-container);
    border-color: var(--primary);
    color: var(--primary);
}
.sieve-number-card.selected-composite {
    background-color: var(--on-tertiary-container);
    border-color: var(--tertiary);
    color: var(--tertiary);
}
.sieve-number-card.selected-square {
    background-color: var(--error-container);
    border-color: var(--error);
    color: var(--error);
}

/* ── Scratch Pad (student notes + drawing) ── */
.mcs-scratch-trigger {
    white-space: nowrap;
    flex-shrink: 0;
}

.mcs-scratch-trigger--floating {
    position: fixed;
    right: 20px;
    bottom: 20px;
    z-index: 1500;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.18);
}

.mcs-scratch-backdrop {
    position: fixed;
    inset: 0;
    background-color: rgba(26, 28, 30, 0.55);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2100;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease;
    padding: 16px;
}

.mcs-scratch-backdrop.active {
    opacity: 1;
    pointer-events: auto;
}

.mcs-scratch-window {
    width: min(720px, 100%);
    max-height: min(90vh, 820px);
    background: var(--surface-container-lowest);
    border: 2px solid var(--outline-variant);
    border-radius: var(--radius-xl);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transform: translateY(24px) scale(0.97);
    transition: transform 0.25s cubic-bezier(0.25, 1, 0.5, 1);
}

.mcs-scratch-backdrop.active .mcs-scratch-window {
    transform: translateY(0) scale(1);
}

.mcs-scratch-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 16px 20px;
    background: var(--primary);
    color: #fff;
}

.mcs-scratch-kicker {
    display: block;
    font-size: 0.65rem;
    letter-spacing: 0.12em;
    opacity: 0.85;
    margin-bottom: 2px;
}

.mcs-scratch-header h2 {
    margin: 0;
    font-size: 1.15rem;
    font-weight: 700;
}

.mcs-scratch-close {
    border: none;
    background: rgba(255, 255, 255, 0.15);
    color: #fff;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1rem;
    line-height: 1;
}

.mcs-scratch-close:hover {
    background: rgba(255, 255, 255, 0.28);
}

.mcs-scratch-body {
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding: 16px 20px 20px;
    min-height: 0;
}

.mcs-scratch-notes-label {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--on-surface-variant);
}

.mcs-scratch-notes {
    width: 100%;
    resize: vertical;
    min-height: 72px;
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius-default);
    padding: 10px 12px;
    font-family: inherit;
    font-size: 0.95rem;
    color: var(--on-surface);
    background: var(--surface);
}

.mcs-scratch-toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.mcs-scratch-tool {
    border: 1px solid var(--outline-variant);
    background: var(--surface);
    color: var(--on-surface);
    border-radius: var(--radius-default);
    padding: 8px 12px;
    font-family: 'Space Grotesk', sans-serif;
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
}

.mcs-scratch-tool:hover {
    border-color: var(--primary);
}

.mcs-scratch-tool.active {
    background: var(--primary-container);
    border-color: var(--primary);
    color: var(--primary);
}

.mcs-scratch-tool--danger {
    margin-left: auto;
}

.mcs-scratch-canvas-wrap {
    flex: 1;
    min-height: 220px;
    height: 42vh;
    border: 1px dashed var(--outline-variant);
    border-radius: var(--radius-default);
    background:
        linear-gradient(90deg, rgba(0, 0, 0, 0.03) 1px, transparent 1px),
        linear-gradient(rgba(0, 0, 0, 0.03) 1px, transparent 1px),
        var(--surface-container-low);
    background-size: 24px 24px;
    overflow: hidden;
}

.mcs-scratch-canvas {
    display: block;
    width: 100%;
    height: 100%;
    touch-action: none;
    cursor: crosshair;
}

.mcs-scratch-canvas.mcs-scratch-canvas--stamp {
    cursor: copy;
}

@media (max-width: 640px) {
    .mcs-scratch-trigger--floating {
        right: 12px;
        bottom: 12px;
        font-size: 0.78rem;
        padding: 10px 12px;
    }

    .mcs-scratch-tool--danger {
        margin-left: 0;
        width: 100%;
    }
}