:root {
    color-scheme: light;
    --bg: #f7f8fb;
    --surface: #fcfcfe;
    --surface-soft: #f5f7fb;
    --surface-band: #eef1f7;
    --surface-mist: #eef5fa;
    --surface-warm: #fbf5ee;
    --text: #1f2430;
    --text-soft: #69707d;
    --line: #dde2ea;
    --line-strong: #c8ced9;
    --accent: #4f78f6;
    --accent-soft: #edf2ff;
    --math-accent: #c8755e;
    --math-soft: #fff1eb;
    --game-accent: #2f9177;
    --game-soft: #edf8f4;
    --success: #4ca56d;
    --success-soft: #eef8f1;
    --danger: #d45e51;
    --danger-soft: #fff0ed;
    --focus: #6e80f4;
    --shadow-soft: 0 10px 30px rgba(31, 36, 48, 0.08);
    --radius-xl: 2rem;
    --radius-lg: 1.5rem;
    --radius-md: 1rem;
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.5rem;
    --space-6: 2rem;
    --space-7: 3rem;
    --space-8: 4rem;
    --space-9: 5rem;
    --font-ui: -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display", "Helvetica Neue", Arial, sans-serif;
    --font-soft: ui-rounded, "SF Pro Rounded", "Arial Rounded MT Bold", "Hiragino Rounded ProN", var(--font-ui);
    --transition: 220ms ease;
}

@supports (color: oklch(0.5 0 0)) {
    :root {
        --bg: oklch(0.98 0.004 258);
        --surface: oklch(0.995 0.003 258);
        --surface-soft: oklch(0.975 0.005 258);
        --surface-band: oklch(0.955 0.008 258);
        --surface-mist: oklch(0.97 0.01 224);
        --surface-warm: oklch(0.972 0.012 82);
        --text: oklch(0.24 0.01 258);
        --text-soft: oklch(0.53 0.01 258);
        --line: oklch(0.88 0.005 258);
        --line-strong: oklch(0.8 0.008 258);
        --accent: oklch(0.59 0.17 253);
        --accent-soft: oklch(0.95 0.02 246);
        --math-accent: oklch(0.64 0.13 20);
        --math-soft: oklch(0.95 0.02 20);
        --game-accent: oklch(0.62 0.11 168);
        --game-soft: oklch(0.96 0.02 168);
        --success: oklch(0.72 0.12 150);
        --success-soft: oklch(0.96 0.03 150);
        --danger: oklch(0.64 0.18 24);
        --danger-soft: oklch(0.96 0.03 24);
        --focus: oklch(0.74 0.12 252);
    }
}

* {
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: var(--font-ui);
    color: var(--text);
    background: linear-gradient(180deg, var(--surface), var(--bg));
}

img,
svg {
    display: block;
    max-width: 100%;
}

button,
input,
select,
textarea {
    font: inherit;
}

button {
    cursor: pointer;
    border: none;
    background: none;
}

a {
    color: inherit;
    text-decoration: none;
}

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

.skip-link:focus {
    width: auto;
    height: auto;
    margin: var(--space-4);
    clip: auto;
    white-space: normal;
    overflow: visible;
    z-index: 30;
    padding: 0.8rem 1rem;
    border-radius: 999px;
    background: var(--surface);
    box-shadow: var(--shadow-soft);
}

button:focus-visible,
input:focus-visible,
select:focus-visible,
a:focus-visible {
    outline: 3px solid var(--focus);
    outline-offset: 3px;
}

#app {
    width: min(1200px, calc(100% - 2rem));
    margin: 0 auto;
    padding: clamp(var(--space-4), 3vw, var(--space-6)) 0 var(--space-9);
}

[data-view="worksheet"] {
    width: min(980px, calc(100% - 2rem));
}

[data-view="game"] {
    width: min(980px, calc(100% - 2rem));
}

.page-shell {
    display: grid;
    gap: clamp(var(--space-6), 3vw, var(--space-8));
}

.page-shell > * {
    animation: settle 360ms ease-out both;
}

.eyebrow {
    margin: 0;
    color: var(--text-soft);
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.panel-title,
.hero-title,
.sheet-title,
.section-title,
.completion-title {
    margin: 0;
    font-family: var(--font-ui);
    font-weight: 700;
    line-height: 1.04;
    letter-spacing: -0.04em;
}

.panel-copy,
.hero-copy,
.section-copy,
.field-note,
.history-note,
.sheet-subtitle {
    margin: 0;
    color: var(--text-soft);
    line-height: 1.6;
}

.home-shell {
    gap: clamp(var(--space-6), 4vw, var(--space-9));
}

.home-local-nav {
    position: sticky;
    top: 0.75rem;
    z-index: 20;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-4);
    padding: 0.8rem 1rem;
    border: 1px solid color-mix(in srgb, var(--line-strong) 55%, white);
    border-radius: 999px;
    background: color-mix(in srgb, var(--surface) 82%, transparent);
    backdrop-filter: blur(18px);
    box-shadow: var(--shadow-soft);
}

.home-local-brand {
    font-weight: 700;
    letter-spacing: -0.02em;
}

.home-local-links {
    display: flex;
    flex-wrap: wrap;
    gap: 1.25rem;
}

.home-local-links a {
    color: var(--text-soft);
    font-size: 0.95rem;
}

.hero-panel {
    padding: 0;
    background: none;
    border: 0;
    box-shadow: none;
}

.hero-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(24rem, 30rem);
    gap: clamp(var(--space-5), 3vw, var(--space-7));
    align-items: center;
}

.hero-copy-wrap {
    display: grid;
    gap: var(--space-4);
}

.hero-title {
    font-size: clamp(3rem, 8vw, 5.8rem);
    max-width: 8ch;
}

.hero-copy {
    max-width: 43rem;
    font-size: clamp(1.05rem, 2.1vw, 1.35rem);
}

.hero-actions,
.toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3);
}

.hero-stage {
    position: relative;
    min-height: 26rem;
    isolation: isolate;
}

.hero-preview {
    position: absolute;
    display: grid;
    gap: var(--space-3);
    justify-items: start;
    width: min(100%, 17rem);
    padding: var(--space-5);
    border-radius: 2.15rem;
    border: 1px solid color-mix(in srgb, var(--line-strong) 55%, white);
    background: linear-gradient(180deg, var(--surface), var(--surface-soft));
    box-shadow:
        0 26px 64px color-mix(in srgb, var(--text) 9%, transparent),
        0 10px 28px color-mix(in srgb, var(--text) 5%, transparent),
        0 0 34px color-mix(in srgb, white 68%, transparent);
    color: inherit;
    text-align: left;
    cursor: pointer;
    appearance: none;
    will-change: transform;
}

.hero-preview:hover,
.hero-preview:focus-visible {
    animation-play-state: paused;
    box-shadow:
        0 30px 72px color-mix(in srgb, var(--text) 11%, transparent),
        0 12px 32px color-mix(in srgb, var(--text) 7%, transparent),
        0 0 34px color-mix(in srgb, white 68%, transparent);
}

.hero-preview:focus-visible {
    outline: 3px solid color-mix(in srgb, var(--accent-soft) 80%, white);
    outline-offset: 4px;
}

.hero-preview strong,
.product-panel h3,
.reason-tile h3,
.summary-item strong {
    display: block;
    margin: 0;
    font-size: clamp(1.5rem, 2.2vw, 2rem);
    font-weight: 700;
    letter-spacing: -0.03em;
}

.hero-preview p,
.product-panel p,
.reason-tile p,
.saved-resume p {
    margin: 0;
    color: var(--text-soft);
    line-height: 1.6;
}

.preview-kicker,
.product-kicker {
    display: inline-flex;
    width: fit-content;
    min-width: 9.75rem;
    min-height: 2.35rem;
    align-items: center;
    justify-content: center;
    padding: 0.32rem 0.7rem;
    border-radius: 999px;
    background: color-mix(in srgb, var(--surface-band) 80%, white);
    color: var(--text-soft);
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.hero-preview--primary {
    top: 0;
    right: 0.85rem;
    z-index: 3;
    animation: hero-float-primary 6.4s cubic-bezier(0.25, 1, 0.5, 1) infinite;
}

.hero-preview--secondary {
    top: 12rem;
    right: 0;
    width: min(100%, 13.25rem);
    background: linear-gradient(180deg, color-mix(in srgb, var(--math-soft) 72%, white), var(--surface));
    z-index: 1;
    animation: hero-float-secondary 7.1s cubic-bezier(0.25, 1, 0.5, 1) infinite;
}

.hero-preview--tertiary {
    top: 11rem;
    left: 0;
    width: min(100%, 13.5rem);
    background: linear-gradient(180deg, color-mix(in srgb, var(--game-soft) 72%, white), var(--surface));
    z-index: 2;
    animation: hero-float-tertiary 6.8s cubic-bezier(0.25, 1, 0.5, 1) infinite;
}

.hero-preview-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.9rem;
    height: 1.9rem;
    margin-top: auto;
    border-radius: 999px;
    background: color-mix(in srgb, var(--surface-band) 74%, white);
    color: var(--text-soft);
    font-size: 1rem;
    font-weight: 700;
}

.home-section {
    display: grid;
    gap: var(--space-5);
}

.home-section--band {
    padding: clamp(var(--space-6), 4vw, var(--space-7));
    border-radius: var(--radius-xl);
    background: linear-gradient(180deg, var(--surface-band), color-mix(in srgb, var(--surface) 98%, white));
}

.home-section--saved {
    width: 100%;
}

.completion-saved {
    width: 100%;
    padding-block: clamp(var(--space-5), 3vw, var(--space-6));
    padding-inline: 0;
    border-top: 1px solid var(--line);
}

.section-intro {
    display: grid;
    gap: var(--space-3);
    max-width: 42rem;
}

.section-intro--compact {
    max-width: 36rem;
}

.panel-title {
    font-size: clamp(2.05rem, 4.4vw, 3.4rem);
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-4);
}

.product-panel {
    display: grid;
    grid-template-rows: auto auto auto 1fr auto;
    align-content: start;
    gap: var(--space-4);
    min-height: 20rem;
    padding: clamp(var(--space-5), 3vw, var(--space-6));
    border-radius: calc(var(--radius-xl) + 0.25rem);
    background: var(--surface);
    border: 1px solid color-mix(in srgb, var(--line-strong) 65%, white);
}

.product-panel h3 {
    align-self: start;
}

.product-panel--primary {
    background: linear-gradient(180deg, var(--surface), color-mix(in srgb, var(--accent-soft) 40%, white));
}

.product-panel--secondary {
    background: linear-gradient(180deg, var(--surface), color-mix(in srgb, var(--math-soft) 60%, white));
}

.product-panel--tertiary {
    background: linear-gradient(180deg, var(--surface), color-mix(in srgb, var(--game-soft) 62%, white));
}

.product-footnote {
    margin-top: auto;
    padding-top: var(--space-3);
    color: var(--text-soft);
    border-top: 1px solid var(--line);
}

.product-actions {
    display: flex;
    margin-top: auto;
}

.select-wrap {
    display: grid;
    gap: var(--space-2);
}

.select-label {
    color: var(--text-soft);
    font-size: 0.96rem;
    font-weight: 600;
}

.select-field {
    width: 100%;
    min-height: 3.25rem;
    padding: 0.9rem 1rem;
    border-radius: 1rem;
    border: 1px solid var(--line-strong);
    background: color-mix(in srgb, var(--surface) 90%, white);
    color: var(--text);
    appearance: none;
}

.reason-grid,
.smart-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-4);
}

.reason-tile,
.smart-tile {
    display: grid;
    gap: var(--space-3);
    padding: var(--space-4);
    border-radius: var(--radius-md);
    border: 1px solid var(--line);
    background: var(--surface);
}

.saved-header {
    display: flex;
    justify-content: space-between;
    align-items: end;
    gap: var(--space-4);
}

.saved-total {
    color: var(--text-soft);
    font-size: 0.95rem;
    font-weight: 700;
    white-space: nowrap;
}

.saved-resume {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-4) 0;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
}

.saved-resume strong {
    display: block;
    margin-bottom: var(--space-1);
    font-size: 1.05rem;
}

.history-list {
    display: grid;
    gap: var(--space-3);
    padding: 0;
    margin: 0;
    list-style: none;
}

.history-list--saved {
    grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
}

.history-list--proud {
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

.history-item {
    padding: var(--space-4);
    border-radius: var(--radius-md);
    background: color-mix(in srgb, var(--surface-soft) 94%, white);
    border: 1px solid var(--line);
}

.history-item strong {
    display: block;
}

.history-item span {
    display: block;
    margin-top: var(--space-2);
    color: var(--text-soft);
    font-size: 0.92rem;
}

.summary-strip--proud {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    padding-top: 0;
    border-top: 0;
}

.summary-strip--proud .summary-item {
    padding: var(--space-4);
    border-radius: var(--radius-md);
    border: 1px solid var(--line);
    background: var(--surface);
}

.proud-resume {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-4);
    border-radius: var(--radius-md);
    border: 1px solid var(--line);
    background: var(--surface);
}

.proud-resume strong {
    display: block;
    margin-bottom: var(--space-1);
    font-size: 1.05rem;
}

.proud-history {
    display: grid;
    gap: var(--space-3);
}

.proud-history-title {
    font-size: 1rem;
    letter-spacing: -0.01em;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 2.9rem;
    padding: 0.75rem 1.15rem;
    border-radius: 999px;
    font-size: 0.95rem;
    font-weight: 600;
    transition: transform var(--transition), background var(--transition), color var(--transition), border-color var(--transition);
}

.button:hover {
    transform: translateY(-1px);
}

.button--primary {
    color: white;
    background: var(--accent);
}

.button--secondary {
    color: white;
    background: color-mix(in srgb, var(--math-accent) 86%, var(--text));
}

.button--tertiary {
    color: white;
    background: color-mix(in srgb, var(--game-accent) 84%, var(--text));
}

.button--ghost {
    color: var(--text);
    background: var(--surface);
    border: 1px solid var(--line-strong);
}

.button--link {
    padding-inline: 0;
    color: var(--accent);
}

.worksheet-shell {
    gap: var(--space-5);
}

.sheet-hero {
    display: grid;
    gap: var(--space-4);
    padding: clamp(var(--space-5), 3vw, var(--space-6));
    border-bottom: 1px solid var(--line);
}

.sheet-hero--homework {
    background: linear-gradient(180deg, color-mix(in srgb, var(--accent-soft) 34%, white), transparent 72%);
}

.sheet-hero--math {
    background: linear-gradient(180deg, color-mix(in srgb, var(--math-soft) 46%, white), transparent 72%);
}

.sheet-hero--game {
    background: linear-gradient(180deg, color-mix(in srgb, var(--game-soft) 62%, white), transparent 72%);
}

.sheet-controls {
    display: flex;
    gap: var(--space-3);
}

.sheet-topline {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: var(--space-4);
    align-items: end;
}

.sheet-heading {
    display: grid;
    gap: var(--space-2);
    min-width: 0;
}

.sheet-corner {
    display: grid;
    gap: var(--space-3);
    justify-items: end;
}

.sheet-title {
    font-size: clamp(2.5rem, 6vw, 4.4rem);
    max-width: 10ch;
}

.sheet-badge {
    display: inline-flex;
    align-items: center;
    min-height: 2rem;
    padding: 0.35rem 0.8rem;
    border-radius: 999px;
    background: color-mix(in srgb, var(--surface) 94%, white);
    border: 1px solid var(--line);
    color: var(--text-soft);
    font-size: 0.92rem;
    font-weight: 600;
}

.name-lines {
    display: grid;
    gap: var(--space-2);
    color: var(--text-soft);
    font-size: 0.93rem;
    text-align: right;
}

.sheet-helper {
    display: grid;
    gap: var(--space-1);
    max-width: 44rem;
    padding-top: var(--space-3);
    border-top: 1px solid var(--line);
}

.sheet-helper strong {
    font-size: 1.05rem;
    font-weight: 700;
}

.sheet-helper span {
    color: var(--text-soft);
    line-height: 1.55;
}

.status-region {
    min-height: 1px;
}

.validation-summary {
    padding: var(--space-4) var(--space-5);
    border-radius: var(--radius-lg);
    background: color-mix(in srgb, var(--danger-soft) 85%, white);
    border: 1px solid color-mix(in srgb, var(--danger) 18%, white);
}

.status-title {
    margin: 0;
    font-size: 1.2rem;
    letter-spacing: -0.02em;
}

.validation-summary ul {
    margin: var(--space-3) 0 0;
    padding-left: 1.25rem;
    color: var(--text-soft);
}

.worksheet-sections {
    display: grid;
    gap: clamp(var(--space-5), 2vw, var(--space-6));
}

.section-sheet {
    display: grid;
    gap: var(--space-4);
    padding: clamp(var(--space-5), 3vw, var(--space-6));
    border-radius: calc(var(--radius-xl) - 0.25rem);
    border: 1px solid var(--line);
    background: var(--surface);
}

.section-sheet--plain {
    background: var(--surface);
}

.section-sheet--soft {
    background: color-mix(in srgb, var(--surface-soft) 92%, white);
}

.section-sheet--mist {
    background: color-mix(in srgb, var(--surface-mist) 90%, white);
}

.section-sheet--warm {
    background: color-mix(in srgb, var(--surface-warm) 88%, white);
}

.section-sheet--game {
    background: linear-gradient(180deg, color-mix(in srgb, var(--game-soft) 58%, white), var(--surface));
}

.section-sheet.page-break-before {
    break-before: page;
}

.section-header {
    display: grid;
    gap: var(--space-2);
    max-width: 46rem;
}

.section-step {
    margin: 0;
    color: var(--text-soft);
    font-size: 0.84rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.section-title {
    font-size: clamp(1.65rem, 3vw, 2.4rem);
}

.problem-list,
.problem-grid {
    display: grid;
    gap: var(--space-3);
    margin: 0;
    padding: 0;
}

.problem-list {
    list-style: none;
    display: grid;
    gap: var(--space-4);
}

.problem-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-4);
}

.problem-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(8rem, auto);
    gap: var(--space-3) var(--space-4);
    padding: var(--space-4);
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    background: color-mix(in srgb, var(--surface) 96%, white);
    align-items: center;
}

.problem-row--valid {
    background: color-mix(in srgb, var(--success-soft) 72%, white);
}

.problem-row--checked {
    background: color-mix(in srgb, var(--success-soft) 72%, white);
}

.problem-row--invalid,
.task-row--invalid {
    background: color-mix(in srgb, var(--danger-soft) 70%, white);
}

.problem-stem {
    display: grid;
    gap: var(--space-2);
    align-content: start;
}

.problem-prompt {
    font-family: var(--font-soft);
    font-size: 1.05rem;
    line-height: 1.55;
}

.answer-wrap {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3);
    align-items: center;
    justify-content: flex-start;
    position: relative;
}

.answer-wrap--checked::after {
    content: "✓";
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.55rem;
    height: 1.55rem;
    border-radius: 999px;
    background: var(--success);
    color: white;
    font-size: 0.95rem;
    font-weight: 700;
}

.answer-input {
    width: min(100%, 8rem);
    min-height: 3.15rem;
    padding: 0.8rem 0.95rem;
    border-radius: 1rem;
    border: 1px solid var(--line-strong);
    background: var(--surface);
    color: var(--text);
    text-align: center;
}

.answer-input--checked {
    border-color: var(--success);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--success-soft) 48%, white);
}

.field-note {
    font-size: 0.93rem;
}

.problem-row .field-note {
    grid-column: 1 / -1;
    margin: 0;
}

.spelling-practice {
    display: grid;
    gap: var(--space-4);
}

.spelling-row {
    display: grid;
    grid-template-columns: minmax(8rem, 11rem) minmax(0, 1fr);
    gap: var(--space-3) var(--space-4);
    padding: var(--space-4);
    border-radius: var(--radius-md);
    border: 1px solid var(--line);
    background: color-mix(in srgb, var(--surface) 96%, white);
    align-items: center;
}

.spelling-row--valid {
    background: color-mix(in srgb, var(--success-soft) 72%, white);
}

.spelling-row--checked {
    background: color-mix(in srgb, var(--success-soft) 72%, white);
}

.spelling-row--invalid {
    background: color-mix(in srgb, var(--danger-soft) 70%, white);
}

.spelling-word-wrap {
    display: flex;
    align-items: center;
}

.spelling-word {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 2.85rem;
    padding: 0.4rem 0.85rem;
    border-radius: 999px;
    background: color-mix(in srgb, var(--accent-soft) 70%, white);
    border: 1px solid color-mix(in srgb, var(--line-strong) 55%, white);
    font-family: var(--font-soft);
    font-size: 1.18rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    cursor: pointer;
    transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
}

.spelling-word:hover,
.spelling-word:focus-visible,
.game-word-chip:hover,
.game-word-chip:focus-visible,
.game-focus-word:hover,
.game-focus-word:focus-visible {
    transform: translateY(-1px);
    box-shadow: 0 10px 24px rgba(31, 36, 48, 0.08);
}

.spelling-attempts {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-3);
}

.spelling-attempt {
    display: block;
    position: relative;
}

.spelling-attempt--invalid {
    background: color-mix(in srgb, var(--danger-soft) 45%, transparent);
}

.spelling-attempt--valid {
    background: color-mix(in srgb, var(--success-soft) 45%, transparent);
}

.spelling-attempt--checked::after {
    content: "✓";
    position: absolute;
    top: 50%;
    right: 0.85rem;
    transform: translateY(-50%);
    color: var(--success);
    font-size: 1rem;
    font-weight: 700;
    pointer-events: none;
}

.spelling-input {
    width: 100%;
    text-align: left;
    padding-right: 2.35rem;
}

.spelling-row .field-note {
    grid-column: 1 / -1;
    margin: 0;
}

.text-entry {
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    background: color-mix(in srgb, var(--surface) 96%, white);
}

.text-entry {
    display: grid;
    gap: var(--space-3);
    padding: var(--space-4);
}

.text-entry--valid {
    background: color-mix(in srgb, var(--success-soft) 72%, white);
}

.text-entry--invalid {
    background: color-mix(in srgb, var(--danger-soft) 70%, white);
}

.text-entry-label {
    color: var(--text-soft);
    font-weight: 600;
}

.text-entry-input {
    width: 100%;
    min-height: 10rem;
    padding: 0.95rem 1rem;
    border-radius: 1rem;
    border: 1px solid var(--line-strong);
    background: var(--surface);
    color: var(--text);
    line-height: 1.7;
    resize: vertical;
}

.text-entry-input--lined {
    min-height: 16rem;
    line-height: 2.1rem;
    background-image: linear-gradient(color-mix(in srgb, var(--line-strong) 85%, white) 1px, transparent 1px);
    background-size: 100% 2.1rem;
    background-position: 0 2.55rem;
}

.task-row {
    display: flex;
    gap: var(--space-3);
    align-items: start;
    padding: var(--space-4);
    border-radius: var(--radius-md);
    background: color-mix(in srgb, var(--surface) 96%, white);
    border: 1px solid var(--line);
}

.task-row input {
    width: 1.15rem;
    height: 1.15rem;
    margin-top: 0.1rem;
    accent-color: var(--accent);
}

.task-row strong {
    display: block;
    margin-bottom: var(--space-1);
}

.completion-shell {
    gap: var(--space-6);
}

.completion-hero {
    display: grid;
    gap: var(--space-4);
    padding: clamp(var(--space-6), 4vw, var(--space-8)) 0 var(--space-5);
}

.completion-title {
    font-size: clamp(2.7rem, 7vw, 5rem);
    max-width: 10ch;
}

.summary-strip {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
    gap: var(--space-4);
    padding-top: var(--space-4);
    border-top: 1px solid var(--line);
}

.summary-item {
    display: grid;
    gap: var(--space-2);
}

.summary-item span {
    color: var(--text-soft);
    font-size: 0.92rem;
}

.summary-item strong {
    font-size: clamp(1.25rem, 2vw, 1.65rem);
}

.game-lines {
    min-width: 10.5rem;
}

.game-progress-strip {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: var(--space-4);
    padding-bottom: var(--space-4);
    border-bottom: 1px solid var(--line);
}

.game-progress-dots {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.game-progress-dot {
    width: 0.85rem;
    height: 0.85rem;
    border-radius: 999px;
    background: color-mix(in srgb, var(--line-strong) 70%, white);
}

.game-progress-dot--current {
    background: var(--game-accent);
    transform: scale(1.08);
}

.game-progress-dot--done {
    background: var(--success);
}

.game-status {
    display: grid;
    gap: var(--space-2);
    padding: var(--space-4);
    border-radius: var(--radius-md);
    border: 1px solid var(--line);
    background: color-mix(in srgb, var(--surface) 96%, white);
}

.game-status strong {
    font-size: 1.15rem;
    letter-spacing: -0.02em;
}

.game-status p:last-child {
    margin: 0;
    color: var(--text-soft);
    line-height: 1.6;
}

.game-status--error {
    background: color-mix(in srgb, var(--danger-soft) 74%, white);
}

.game-status--success {
    background: color-mix(in srgb, var(--success-soft) 72%, white);
}

.game-card,
.game-entry-form {
    display: grid;
    gap: var(--space-4);
    padding: clamp(var(--space-5), 3vw, var(--space-6));
    border-radius: calc(var(--radius-xl) - 0.25rem);
    border: 1px solid var(--line);
    background: color-mix(in srgb, var(--surface) 96%, white);
}

.game-entry-form {
    justify-items: center;
    text-align: center;
}

.game-card--focus {
    place-items: center;
    text-align: center;
}

.game-entry-header {
    display: grid;
    gap: var(--space-2);
    justify-items: center;
    max-width: 36rem;
}

.game-rule-chips {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-2);
}

.game-rule-chip {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 2.35rem;
    padding: 0.45rem 0.8rem;
    border-radius: 999px;
    border: 1px solid var(--line);
    background: var(--surface);
    color: var(--text-soft);
    font-size: 0.94rem;
    font-weight: 600;
}

.game-card-actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-3);
}

.game-word-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: var(--space-3);
}

.game-word-chip {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 3rem;
    padding: 0.7rem 0.95rem;
    border-radius: 999px;
    background: color-mix(in srgb, var(--game-soft) 74%, white);
    border: 1px solid color-mix(in srgb, var(--line-strong) 55%, white);
    font-family: var(--font-soft);
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    cursor: pointer;
    transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
}

.game-focus-word {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: min(100%, 18rem);
    min-height: 9rem;
    padding: 1rem 1.5rem;
    border-radius: calc(var(--radius-xl) - 0.35rem);
    background: linear-gradient(180deg, color-mix(in srgb, var(--game-soft) 74%, white), var(--surface));
    border: 1px solid color-mix(in srgb, var(--line-strong) 60%, white);
    font-family: var(--font-soft);
    font-size: clamp(2rem, 5vw, 3.4rem);
    font-weight: 700;
    letter-spacing: -0.04em;
    cursor: pointer;
    transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
}

.game-entry-stage {
    display: grid;
    place-items: center;
    width: min(100%, 32rem);
    min-height: 12rem;
    padding: 1rem 1.5rem;
    border-radius: calc(var(--radius-xl) - 0.35rem);
    background: linear-gradient(180deg, color-mix(in srgb, var(--game-soft) 74%, white), var(--surface));
    border: 1px solid color-mix(in srgb, var(--line-strong) 60%, white);
}

.game-entry-input {
    width: min(100%, 24rem);
    min-height: 6rem;
    padding: 0.85rem 1rem;
    border-radius: 1.5rem;
    border: 1px solid color-mix(in srgb, var(--line-strong) 60%, white);
    background: color-mix(in srgb, var(--surface) 88%, white);
    color: var(--text);
    font-family: var(--font-soft);
    font-size: clamp(1.9rem, 4.4vw, 3.1rem);
    font-weight: 700;
    letter-spacing: -0.04em;
    text-align: center;
    box-shadow: inset 0 1px 0 color-mix(in srgb, white 75%, transparent);
}

.game-entry-input::placeholder {
    color: color-mix(in srgb, var(--text-soft) 55%, white);
    font-size: clamp(1rem, 2vw, 1.25rem);
    letter-spacing: -0.01em;
}

.game-entry-form .button {
    width: auto;
    min-width: 12rem;
}

@supports not (background: color-mix(in srgb, black 50%, white)) {
    .home-local-nav {
        border: 1px solid #d1d7e0;
        background: rgba(252, 252, 254, 0.92);
        box-shadow: 0 10px 30px rgba(31, 36, 48, 0.08);
    }

    .hero-preview {
        border: 1px solid #d1d7e0;
        box-shadow:
            0 26px 64px rgba(31, 36, 48, 0.09),
            0 10px 28px rgba(31, 36, 48, 0.05),
            0 0 34px rgba(255, 255, 255, 0.68);
    }

    .preview-kicker,
    .product-kicker {
        background: #eceff5;
    }

    .hero-preview--secondary {
        background: linear-gradient(180deg, #fff4ef, var(--surface));
    }

    .hero-preview--tertiary {
        background: linear-gradient(180deg, #eef8f4, var(--surface));
    }

    .home-section--band {
        background: linear-gradient(180deg, var(--surface-band), var(--surface));
    }

    .product-panel {
        border: 1px solid #d1d7e0;
        background: var(--surface);
    }

    .product-panel--primary {
        background: linear-gradient(180deg, var(--surface), #f3f6ff);
    }

    .product-panel--secondary {
        background: linear-gradient(180deg, var(--surface), #fff3ed);
    }

    .product-panel--tertiary {
        background: linear-gradient(180deg, var(--surface), #eef8f4);
    }

    .select-field {
        background: #fafbfe;
    }

    .history-item,
    .spelling-row,
    .text-entry,
    .task-row,
    .game-status,
    .game-card,
    .game-entry-form {
        background: #f7f9fc;
    }

    .button--secondary {
        background: #c8755e;
    }

    .button--tertiary {
        background: #2f9177;
    }

    .sheet-hero--homework {
        background: linear-gradient(180deg, #eef3ff, transparent 72%);
    }

    .sheet-hero--math {
        background: linear-gradient(180deg, #fff2ec, transparent 72%);
    }

    .sheet-hero--game {
        background: linear-gradient(180deg, #eef8f4, transparent 72%);
    }

    .sheet-badge {
        background: #f7f9fc;
    }

    .validation-summary {
        background: #fff3f1;
        border: 1px solid #f0c7c1;
    }

    .section-sheet--soft {
        background: var(--surface-soft);
    }

    .section-sheet--mist {
        background: var(--surface-mist);
    }

    .section-sheet--warm {
        background: var(--surface-warm);
    }

    .section-sheet--game {
        background: linear-gradient(180deg, #eef8f4, var(--surface));
    }

    .problem-row--valid,
    .problem-row--checked,
    .spelling-row--valid,
    .spelling-row--checked,
    .text-entry--valid,
    .game-status--success {
        background: #eef8f1;
    }

    .problem-row--invalid,
    .task-row--invalid,
    .spelling-row--invalid,
    .text-entry--invalid,
    .game-status--error {
        background: #fff1ee;
    }

    .spelling-word {
        background: #edf2ff;
        border: 1px solid #d1d7e0;
    }

    .spelling-attempt--invalid {
        background: rgba(212, 94, 81, 0.12);
    }

    .spelling-attempt--valid {
        background: rgba(76, 165, 109, 0.12);
    }

    .answer-input--checked {
        box-shadow: 0 0 0 3px rgba(76, 165, 109, 0.22);
    }

    .text-entry-input--lined {
        background-image: linear-gradient(#cfd6e2 1px, transparent 1px);
    }

    .game-progress-dot {
        background: #c8ced9;
    }

    .game-word-chip {
        background: #eef8f4;
        border: 1px solid #d1d7e0;
    }

    .game-focus-word,
    .game-entry-stage {
        background: linear-gradient(180deg, #eef8f4, var(--surface));
        border: 1px solid #d1d7e0;
    }

    .game-entry-input {
        border: 1px solid #d1d7e0;
        background: rgba(252, 252, 254, 0.9);
        box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.75);
    }

    .game-entry-input::placeholder {
        color: #98a0ad;
    }
}

@media (max-width: 980px) {
    .hero-layout,
    .product-grid,
    .reason-grid,
    .smart-grid,
    .summary-strip,
    .problem-grid {
        grid-template-columns: 1fr;
    }

    .hero-stage {
        min-height: 22rem;
        width: min(100%, 25rem);
        margin: 0 auto;
    }

    .hero-preview {
        width: min(100%, 15rem);
    }

    .hero-preview--primary {
        right: 0.5rem;
    }

    .hero-preview--secondary {
        top: 10.75rem;
        width: min(100%, 11.5rem);
    }

    .hero-preview--tertiary {
        top: 10.25rem;
        width: min(100%, 12rem);
    }
}

@media (max-width: 780px) {
    #app,
    [data-view="worksheet"] {
        width: min(100%, calc(100% - 1rem));
    }

    .hero-copy-wrap {
        gap: var(--space-3);
    }

    .hero-title {
        font-size: clamp(4rem, 18vw, 6.35rem);
        max-width: 6ch;
        letter-spacing: -0.05em;
    }

    .hero-copy {
        max-width: 24rem;
        font-size: 1.02rem;
    }

    .home-local-nav {
        position: static;
        border-radius: 1.25rem;
    }

    .home-local-brand {
        display: none;
    }

    .saved-header,
    .saved-resume,
    .proud-resume,
    .sheet-controls,
    .toolbar {
        align-items: start;
        flex-direction: column;
    }

    .sheet-topline {
        grid-template-columns: minmax(0, 1fr) auto;
        gap: var(--space-3);
        align-items: start;
    }

    .sheet-heading {
        gap: var(--space-1);
    }

    .sheet-corner {
        align-self: stretch;
        justify-items: end;
        grid-template-rows: auto 1fr;
        align-content: space-between;
    }

    .name-lines {
        align-self: end;
        text-align: right;
        font-size: 0.86rem;
        gap: 0.35rem;
    }

    .sheet-title {
        font-size: clamp(2rem, 9vw, 3rem);
        max-width: 6.5ch;
    }

    .sheet-subtitle {
        max-width: 15rem;
        font-size: 0.92rem;
        line-height: 1.45;
    }

    .sheet-badge {
        justify-self: end;
        padding-inline: 0.65rem;
        font-size: 0.84rem;
    }

    .button,
    .select-field,
    .answer-input,
    .game-entry-input {
        width: 100%;
    }

    .game-entry-stage {
        width: 100%;
        min-height: 9.5rem;
        padding-inline: 1rem;
    }

    .game-entry-input {
        min-height: 5.4rem;
    }

    .spelling-row {
        grid-template-columns: 1fr;
        align-items: start;
    }

    .problem-row {
        grid-template-columns: 1fr;
        align-items: start;
    }

    .spelling-attempts,
    .history-list--saved,
    .history-list--proud {
        grid-template-columns: 1fr;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    .page-shell > * {
        animation: none;
    }

    .hero-preview--primary,
    .hero-preview--secondary,
    .hero-preview--tertiary {
        animation: none;
    }
}

@media print {
    body {
        background: white;
    }

    #app,
    [data-view="worksheet"] {
        width: 100%;
        padding: 0;
    }

    .no-print,
    .skip-link,
    .home-local-nav {
        display: none !important;
    }

    .hero-panel,
    .home-section,
    .sheet-hero,
    .section-sheet,
    .completion-hero,
    .validation-summary,
    .completion-saved {
        background: white !important;
        border: 0 !important;
        box-shadow: none !important;
        padding-inline: 0 !important;
    }

    .sheet-hero,
    .section-sheet {
        break-inside: avoid;
    }

    .problem-row,
    .task-row,
    .history-item,
    .text-entry,
    .text-entry-input,
    .spelling-row,
    .answer-input {
        background: white !important;
        border-color: #cfcfcf !important;
    }

    .summary-strip,
    .saved-resume,
    .sheet-helper {
        border-color: #d9d9d9 !important;
    }
}

@keyframes settle {
    from {
        opacity: 0;
        transform: translateY(12px);
    }

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

@keyframes hero-float-primary {
    0%, 100% {
        transform: translate3d(0, 0, 0);
    }

    25% {
        transform: translate3d(3px, -3px, 0);
    }

    50% {
        transform: translate3d(0, -4px, 0);
    }

    75% {
        transform: translate3d(-3px, 2px, 0);
    }
}

@keyframes hero-float-secondary {
    0%, 100% {
        transform: translate3d(0, 0, 0);
    }

    20% {
        transform: translate3d(-3px, -2px, 0);
    }

    55% {
        transform: translate3d(2px, 3px, 0);
    }

    80% {
        transform: translate3d(3px, -1px, 0);
    }
}

@keyframes hero-float-tertiary {
    0%, 100% {
        transform: translate3d(0, 0, 0);
    }

    30% {
        transform: translate3d(2px, -3px, 0);
    }

    60% {
        transform: translate3d(-3px, 2px, 0);
    }

    85% {
        transform: translate3d(1px, 3px, 0);
    }
}