:root {
    color-scheme: light;
    --bg: #f5f8fc;
    --bg-warm: #fff8ed;
    --surface: rgba(255, 255, 255, 0.92);
    --surface-strong: #ffffff;
    --surface-play: linear-gradient(180deg, #fffef8 0%, #fff6e9 100%);
    --surface-soft: #eef6ff;
    --text: #14213d;
    --muted: #5c677d;
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-soft: #e8f0ff;
    --accent: #f59e0b;
    --accent-dark: #b45309;
    --accent-soft: #fff2d8;
    --success: #15803d;
    --success-soft: #e7f8ef;
    --danger: #b91c1c;
    --danger-soft: #ffe8e6;
    --special: #7c3aed;
    --special-soft: #f0e9ff;
    --grammar-verb: #166534;
    --grammar-verb-soft: #e8f7ed;
    --grammar-tense: #1d4ed8;
    --grammar-tense-soft: #e8f0ff;
    --grammar-mode: #0f766e;
    --grammar-mode-soft: #ddf7f3;
    --grammar-subject: #b45309;
    --grammar-subject-soft: #fff2d8;
    --grammar-person: #6d28d9;
    --grammar-person-soft: #f0e9ff;
    --grammar-stem: #0f766e;
    --grammar-stem-soft: #dcfce7;
    --grammar-ending: #9f1239;
    --grammar-ending-soft: #ffe4ec;
    --line: #d9e2ec;
    --line-strong: #c6d3e1;
    --focus: #f59e0b;
    --shadow: 0 24px 60px rgba(20, 33, 61, 0.1);
    --shadow-soft: 0 14px 32px rgba(20, 33, 61, 0.08);
    --radius-lg: 1.25rem;
    --radius-md: 0.9rem;
    --radius-sm: 0.65rem;
}

* {
    box-sizing: border-box;
}

html {
    min-height: 100%;
    background: var(--bg);
}

body {
    min-height: 100vh;
    margin: 0;
    color: var(--text);
    background:
        linear-gradient(135deg, rgba(232, 240, 255, 0.92) 0%, rgba(255, 248, 237, 0.72) 44%, rgba(245, 248, 252, 0.98) 100%),
        var(--bg);
    font-family: "Avenir Next", Nunito, "Trebuchet MS", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    line-height: 1.5;
}

a {
    color: inherit;
}

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

h1,
h2,
h3,
p {
    overflow-wrap: anywhere;
}

h1,
h2,
h3 {
    margin-block: 0 0.55rem;
    letter-spacing: 0;
}

h1 {
    font-size: clamp(2rem, 7vw, 3.75rem);
    line-height: 1;
}

h2 {
    font-size: clamp(1.35rem, 3vw, 1.8rem);
    line-height: 1.15;
}

h3 {
    font-size: 1.12rem;
    line-height: 1.2;
}

p {
    margin-block: 0 0.75rem;
}

.skip-link {
    position: absolute;
    z-index: 10;
    left: 1rem;
    top: 1rem;
    transform: translateY(-150%);
    background: var(--surface-strong);
    border: 2px solid var(--focus);
    border-radius: var(--radius-sm);
    padding: 0.5rem 0.75rem;
    font-weight: 800;
    box-shadow: var(--shadow-soft);
}

.skip-link:focus {
    transform: translateY(0);
}

.site-shell {
    width: min(72rem, calc(100% - 2rem));
    margin-inline: auto;
}

.site-header {
    position: sticky;
    z-index: 5;
    top: 0;
    border-bottom: 1px solid rgba(217, 226, 236, 0.7);
    background: rgba(245, 248, 252, 0.82);
    backdrop-filter: blur(14px);
}

.site-header .site-shell {
    min-height: 4.75rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
    padding-block: 0.75rem;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 0.8rem;
    border-radius: 999px;
    font-weight: 900;
    text-decoration: none;
}

.brand-mark {
    display: block;
    width: 3rem;
    height: 3rem;
    flex: 0 0 auto;
}

.brand-name {
    /* MathBrain's wordmark: heavy, tightly tracked, deep navy. */
    font-size: 1.32rem;
    font-weight: 900;
    letter-spacing: -0.03em;
    color: var(--text);
}

.site-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem;
    align-items: center;
    font-size: 0.94rem;
}

.site-nav a {
    min-height: 2.45rem;
    display: inline-flex;
    align-items: center;
    border: 1px solid transparent;
    border-radius: 999px;
    padding: 0.4rem 0.72rem;
    text-decoration: none;
    color: var(--muted);
    font-weight: 800;
    transition: background 150ms ease, border-color 150ms ease, color 150ms ease, transform 150ms ease;
}

.site-nav a:hover {
    border-color: var(--line);
    background: rgba(255, 255, 255, 0.72);
    color: var(--text);
    transform: translateY(-1px);
}

.site-main {
    padding-block: clamp(1.25rem, 3vw, 2.5rem) 4rem;
}

.hero {
    min-height: calc(100vh - 7rem);
    display: grid;
    align-content: center;
    padding-block: 3rem;
}

.hero h1 {
    max-width: 12ch;
}

.hero p {
    max-width: 43rem;
    color: var(--muted);
    font-size: 1.13rem;
}

.eyebrow {
    margin: 0 0 0.75rem;
    color: var(--primary-dark);
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 0.78rem;
}

.panel,
.metric-card,
.dashboard-child,
.practice-card,
.feedback-panel {
    background: var(--surface);
    border: 1px solid rgba(198, 211, 225, 0.9);
    box-shadow: var(--shadow-soft);
}

.panel {
    border-radius: var(--radius-lg);
    padding: clamp(1rem, 3vw, 1.35rem);
}

.story-banner {
    border-color: rgba(124, 58, 237, 0.14);
    background: linear-gradient(180deg, rgba(240, 233, 255, 0.92), rgba(255, 255, 255, 0.97));
}

.story-banner h3 {
    margin-bottom: 0.25rem;
}

.story-hook {
    color: var(--muted);
    font-style: italic;
}

.stack {
    display: grid;
    gap: 1rem;
}

.grid {
    display: grid;
    gap: 1rem;
}

.metric-grid {
    display: grid;
    gap: 0.85rem;
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.metric-card {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-md);
    padding: 1rem;
}

.metric-card::before {
    content: "";
    position: absolute;
    inset: 0 0 auto;
    height: 0.35rem;
    background: linear-gradient(90deg, var(--primary), var(--accent));
}

.metric-value {
    display: block;
    margin-top: 0.3rem;
    color: var(--text);
    font-size: 1.85rem;
    line-height: 1.1;
    font-weight: 900;
}

.metric-label {
    display: block;
    color: var(--muted);
    font-size: 0.9rem;
    font-weight: 700;
}

.metric-list {
    display: grid;
    gap: 0.7rem;
    margin: 0;
}

.metric-list div {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    border-bottom: 1px solid var(--line);
    padding-bottom: 0.55rem;
}

.metric-list dt {
    color: var(--muted);
    font-weight: 700;
}

.metric-list dd {
    margin: 0;
    font-weight: 900;
}

.section-heading {
    display: flex;
    gap: 1rem;
    align-items: start;
    justify-content: space-between;
    flex-wrap: wrap;
}

.dashboard-child-list {
    display: grid;
    gap: 1rem;
}

.dashboard-child {
    border-radius: var(--radius-lg);
    padding: clamp(1rem, 3vw, 1.25rem);
    display: grid;
    gap: 0.9rem;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.95), rgba(248, 251, 255, 0.95));
}

.dashboard-stats {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.75rem;
    margin: 0;
}

.dashboard-stats div {
    border: 1px solid rgba(217, 226, 236, 0.95);
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.7);
    padding: 0.72rem;
}

.dashboard-stats dt {
    color: var(--muted);
    font-size: 0.85rem;
    font-weight: 750;
}

.dashboard-stats dd {
    margin: 0.1rem 0 0;
    font-size: 1.22rem;
    font-weight: 900;
}

.tag-list,
.item-list {
    list-style: none;
    padding: 0;
}

.tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin: 0;
}

.tag-list li {
    border: 1px solid #cfe0ff;
    border-radius: 999px;
    background: var(--primary-soft);
    padding: 0.28rem 0.62rem;
    color: var(--primary-dark);
    font-size: 0.9rem;
    font-weight: 800;
}

.item-list {
    display: grid;
    gap: 0.65rem;
    margin: 0;
}

.item-list li {
    display: flex;
    gap: 0.75rem;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    border: 1px solid rgba(217, 226, 236, 0.72);
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.62);
    padding: 0.72rem 0.85rem;
}

.compact-list li {
    justify-content: start;
}

.button.compact,
button.compact {
    min-height: 2.25rem;
    padding: 0.35rem 0.7rem;
    font-size: 0.9rem;
}

@media (min-width: 48rem) {
    .grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .grid.two-columns {
        grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    }

    .metric-grid {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }

    .dashboard-stats {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

.button,
button,
input[type="submit"] {
    min-height: 2.75rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid transparent;
    border-radius: 999px;
    background: linear-gradient(180deg, #3b82f6 0%, var(--primary) 100%);
    color: white;
    padding: 0.62rem 1rem;
    font-weight: 850;
    text-decoration: none;
    cursor: pointer;
    box-shadow: 0 12px 24px rgba(37, 99, 235, 0.2);
    transition: transform 150ms ease, box-shadow 150ms ease, background 150ms ease, border-color 150ms ease;
}

.button:hover,
button:hover,
input[type="submit"]:hover {
    transform: translateY(-1px);
    box-shadow: 0 16px 30px rgba(37, 99, 235, 0.24);
}

.button.secondary,
.button.button-secondary,
button.secondary,
button.button-secondary {
    border-color: #cfe0ff;
    background: var(--surface-strong);
    color: var(--primary-dark);
    box-shadow: 0 10px 20px rgba(20, 33, 61, 0.07);
}

.button.danger,
button.danger {
    border-color: var(--danger);
    background: linear-gradient(180deg, #dc2626 0%, var(--danger) 100%);
    color: white;
}

form {
    display: grid;
    gap: 1rem;
}

label {
    display: block;
    font-weight: 800;
}

input,
select,
textarea {
    width: 100%;
    min-height: 2.75rem;
    border: 1px solid var(--line-strong);
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.92);
    color: var(--text);
    padding: 0.58rem 0.75rem;
    font: inherit;
}

textarea {
    min-height: 6rem;
}

input[type="checkbox"],
input[type="radio"] {
    width: auto;
    min-height: auto;
    accent-color: var(--primary);
}

.helptext,
.muted {
    color: var(--muted);
    font-size: 0.95rem;
}

.errorlist {
    color: var(--danger);
    margin: 0.25rem 0;
}

.messages {
    padding-block: 0 1rem;
}

.message {
    border: 1px solid var(--line);
    border-left: 0.35rem solid var(--primary);
    border-radius: var(--radius-md);
    background: var(--surface-strong);
    padding: 0.8rem 1rem;
    box-shadow: 0 10px 22px rgba(20, 33, 61, 0.06);
}

.message.success,
.message-success {
    border-left-color: var(--success);
    background: var(--success-soft);
}

.message.warning,
.message-warning {
    border-left-color: var(--accent);
    background: var(--accent-soft);
}

.message.error,
.message-error {
    border-left-color: var(--danger);
    background: var(--danger-soft);
}

.table-wrap {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    min-width: 42rem;
}

caption {
    text-align: left;
    font-weight: 900;
    margin-bottom: 0.75rem;
}

th,
td {
    border-bottom: 1px solid var(--line);
    padding: 0.75rem;
    text-align: left;
    vertical-align: top;
}

th {
    color: var(--muted);
    font-size: 0.9rem;
}

pre {
    max-width: 100%;
    overflow-x: auto;
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    background: #101827;
    color: #f8fafc;
    padding: 1rem;
    white-space: pre-wrap;
    word-break: break-word;
}

.definition-grid {
    display: grid;
    gap: 0.75rem;
    margin: 0;
}

.definition-grid div {
    border-bottom: 1px solid var(--line);
    padding-bottom: 0.6rem;
}

.definition-grid dt {
    color: var(--muted);
    font-size: 0.9rem;
    font-weight: 750;
}

.definition-grid dd {
    margin: 0.15rem 0 0;
    font-weight: 700;
}

.checkbox-grid ul {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(9rem, 1fr));
    gap: 0.55rem;
    max-height: 22rem;
    margin: 0;
    overflow: auto;
    padding: 0;
    list-style: none;
}

.checkbox-grid li {
    margin: 0;
}

.checkbox-grid label {
    display: flex;
    gap: 0.55rem;
    align-items: center;
    min-height: 2.75rem;
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.68);
    padding: 0.5rem 0.65rem;
    font-weight: 800;
}

.checkbox-grid-compact label {
    min-height: 2.4rem;
    font-size: 0.94rem;
}

.stack-small {
    display: grid;
    gap: 0.6rem;
}

.stack-small + .stack-small {
    margin-top: 1rem;
}

.compact-heading {
    margin: 0;
    font-size: 0.95rem;
    font-weight: 800;
}

.actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    align-items: center;
}

/* --- Skill focus page --- */

.focus-summary {
    border-left: 0.35rem solid var(--primary);
}

.focus-summary-title {
    margin: 0 0 0.5rem;
    font-size: 0.95rem;
    font-weight: 800;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.focus-summary-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}

.focus-chip {
    display: inline-block;
    border: 1px solid #cfe0ff;
    border-radius: 999px;
    background: var(--primary-soft);
    padding: 0.25rem 0.65rem;
    color: var(--primary-dark);
    font-size: 0.88rem;
    font-weight: 800;
}

.focus-chip-default {
    border-color: var(--line);
    background: var(--surface);
    color: var(--muted);
}

.focus-chip-verb {
    border-color: rgba(22, 101, 52, 0.25);
    background: var(--grammar-verb-soft);
    color: var(--grammar-verb);
}

.focus-chip-tense {
    border-color: rgba(29, 78, 216, 0.25);
    background: var(--grammar-tense-soft);
    color: var(--grammar-tense);
}

.fieldset-title {
    font-size: 1.15rem;
    font-weight: 900;
    color: var(--text);
    padding: 0;
    margin: 0;
}

.skill-domain-heading {
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.skill-domain-dot {
    display: inline-block;
    width: 0.55rem;
    height: 0.55rem;
    border-radius: 50%;
    background: var(--primary);
    flex-shrink: 0;
}

.verb-group-heading {
    font-size: 0.9rem;
    color: var(--grammar-verb);
}

.verb-select-actions {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 0.25rem;
}

.actions form {
    display: inline-flex;
}

.practice-screen {
    width: min(980px, calc(100% - 28px));
    padding-block: 0 3rem;
    gap: 22px;
}

.practice-screen > h1 + p {
    color: var(--muted);
    font-weight: 750;
}

.practice-card {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-lg);
    background: var(--surface-play);
    padding: clamp(1.4rem, 4vw, 2.25rem) clamp(1rem, 4vw, 1.75rem);
    box-shadow: var(--shadow);
    text-align: center;
}

.practice-card::before {
    content: "";
    position: absolute;
    inset: 0 0 auto;
    height: 0.45rem;
    background: linear-gradient(90deg, var(--accent), var(--primary), var(--special));
}

.practice-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    justify-content: center;
    color: var(--muted);
    font-size: 0.9rem;
    font-weight: 850;
}

.practice-meta span {
    border: 1px solid rgba(245, 158, 11, 0.26);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.72);
    padding: 0.3rem 0.62rem;
}

.instruction,
.prompt {
    margin: 0;
}

.instruction {
    color: var(--muted);
    font-weight: 750;
}

.exercise-passage {
    border: 1px solid rgba(60, 130, 246, 0.22);
    border-left: 0.35rem solid var(--primary);
    border-radius: var(--radius-md);
    background: #fffdf7;
    padding: 1rem;
    color: var(--ink);
    font-size: 1.05rem;
    line-height: 1.7;
    text-align: left;
}

.exercise-passage p {
    margin: 0;
}

.exercise-passage .source-label {
    margin-bottom: 0.35rem;
    color: var(--primary-dark);
    font-size: 0.82rem;
    font-weight: 900;
    text-transform: uppercase;
}

.prompt {
    border: 1px solid rgba(198, 211, 225, 0.7);
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.72);
    padding: 0.95rem 1rem;
    font-size: clamp(1.2rem, 4vw, 1.65rem);
    font-weight: 900;
    text-align: center;
}

.conjugation-blank {
    margin: 0;
    border: 1px solid rgba(198, 211, 225, 0.9);
    border-left: 0.45rem solid var(--grammar-subject);
    border-radius: var(--radius-md);
    background: #ffffff;
    color: var(--text);
    padding: clamp(1rem, 4vw, 1.35rem);
    font-size: clamp(1.35rem, 4vw, 2rem);
    font-weight: 900;
    line-height: 1.45;
    overflow-wrap: anywhere;
}

.grammar-clues,
.grammar-review {
    border: 1px solid rgba(198, 211, 225, 0.9);
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.78);
    padding: 1rem;
    text-align: left;
}

.grammar-clues h3,
.grammar-review h4 {
    margin: 0 0 0.75rem;
    color: var(--text);
    font-size: 1rem;
}

.grammar-clue-grid {
    display: grid;
    gap: 0.65rem;
    margin: 0;
}

.grammar-clue {
    display: grid;
    grid-template-columns: minmax(6.25rem, 0.42fr) minmax(0, 1fr);
    gap: 0.65rem;
    align-items: center;
    border: 1px solid var(--line);
    border-left: 0.42rem solid var(--muted);
    border-radius: var(--radius-sm);
    background: #ffffff;
    padding: 0.62rem 0.75rem;
}

.grammar-clue dt {
    color: var(--muted);
    font-size: 0.76rem;
    font-weight: 900;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.grammar-clue dd {
    margin: 0;
    color: var(--text);
    font-size: 1.05rem;
    font-weight: 900;
}

.grammar-clue-verb,
.grammar-clue-base_verb {
    border-left-color: var(--grammar-verb);
    background: var(--grammar-verb-soft);
}

.grammar-clue-tense,
.grammar-clue-verb_form {
    border-left-color: var(--grammar-tense);
    background: var(--grammar-tense-soft);
}

.grammar-clue-mode {
    border-left-color: var(--grammar-mode);
    background: var(--grammar-mode-soft);
}

.grammar-clue-subject {
    border-left-color: var(--grammar-subject);
    background: var(--grammar-subject-soft);
}

.grammar-clue-person,
.grammar-clue-number,
.grammar-clue-form,
.grammar-clue-pattern {
    border-left-color: var(--grammar-person);
    background: var(--grammar-person-soft);
}

.grammar-clue-stem {
    border-left-color: var(--grammar-stem);
    background: var(--grammar-stem-soft);
}

.grammar-clue-ending,
.grammar-clue-agreement_marker {
    border-left-color: var(--grammar-ending);
    background: var(--grammar-ending-soft);
}

.grammar-clue-answer {
    border-left-color: var(--success);
    background: var(--success-soft);
}

.answer-form {
    display: grid;
    gap: 1rem;
}

.answer-panel {
    width: min(100%, 680px);
    margin-inline: auto;
    border: 1px solid rgba(198, 211, 225, 0.88);
    border-radius: var(--radius-lg);
    background: rgba(255, 255, 255, 0.74);
    padding: clamp(1rem, 3vw, 1.25rem);
    box-shadow: var(--shadow-soft);
    text-align: left;
}

.answer-panel input[type="text"],
.answer-panel textarea {
    min-height: 4rem;
    border-radius: var(--radius-md);
    font-size: clamp(1.25rem, 3vw, 1.75rem);
    font-weight: 850;
    text-align: center;
}

.answer-panel .button[type="submit"],
.answer-panel button[type="submit"],
.answer-panel input[type="submit"] {
    width: 100%;
    min-height: 3.85rem;
    border-radius: var(--radius-md);
    font-size: 1.08rem;
}

.conjugation-table-fields {
    display: grid;
    gap: 0.7rem;
}

.conjugation-table-row {
    display: grid;
    grid-template-columns: minmax(5rem, 0.34fr) minmax(0, 1fr);
    gap: 0.75rem;
    align-items: center;
    border: 1px solid var(--line-strong);
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.88);
    padding: 0.75rem;
}

.conjugation-table-subject {
    color: var(--grammar-subject);
    font-size: 1.05rem;
    font-weight: 900;
}

.conjugation-table-entry {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    gap: 0.55rem;
    align-items: center;
}

.conjugation-table-entry input[type="text"] {
    min-height: 3.25rem;
    font-size: 1.25rem;
}

.choice-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.75rem;
    border: 0;
    margin: 0;
    padding: 0;
}

.choice-grid legend {
    grid-column: 1 / -1;
    margin-bottom: 0.6rem;
    color: var(--muted);
    font-weight: 900;
}

.choice-tile {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    min-height: 3.35rem;
    border: 1px solid var(--line-strong);
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.88);
    padding: 0.85rem;
    box-shadow: 0 8px 18px rgba(20, 33, 61, 0.05);
    cursor: pointer;
    transition: transform 140ms ease, border-color 140ms ease, box-shadow 140ms ease, background 140ms ease;
}

.choice-tile:hover,
.choice-tile:focus-within {
    border-color: #9bbcff;
    background: #ffffff;
    box-shadow: 0 14px 28px rgba(37, 99, 235, 0.12);
    transform: translateY(-1px);
}

.choice-tile span {
    font-size: 1.06rem;
    font-weight: 850;
}

.token-bank,
.ordered-answer {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    min-height: 3rem;
    align-items: center;
}

.ordered-answer {
    border: 1px dashed var(--line-strong);
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.55);
    padding: 0.75rem;
}

.token-button,
.ordered-chip {
    min-height: 2.75rem;
    border-radius: 999px;
    padding: 0.55rem 0.85rem;
    font-weight: 900;
}

.token-button:disabled {
    opacity: 0.45;
    cursor: not-allowed;
}

.ordered-chip {
    display: inline-flex;
    align-items: center;
    border: 1px solid #cfe0ff;
    background: var(--primary-soft);
    color: var(--primary-dark);
}

.audio-player {
    border: 1px solid #cfe0ff;
    border-radius: var(--radius-md);
    background: linear-gradient(180deg, #ffffff, #eef6ff);
    padding: 1rem;
    text-align: left;
}

.audio-player figure {
    display: grid;
    gap: 0.7rem;
    margin: 0;
}

.audio-player audio {
    width: 100%;
}

.audio-player figcaption {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
    color: var(--muted);
    font-size: 0.92rem;
}

.pronunciation-recorder {
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.72);
    padding: 1rem;
}

.feedback-panel {
    border-left: 0.45rem solid var(--primary);
    border-radius: var(--radius-lg);
    padding: 1rem 1.1rem;
    display: grid;
    gap: 0.5rem;
}

.feedback-panel h2,
.feedback-panel p {
    margin: 0;
}

.feedback-review {
    display: grid;
    gap: 0.65rem;
    border: 1px solid rgba(180, 35, 24, 0.18);
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.72);
    padding: 0.9rem;
}

.feedback-review h3,
.feedback-review p {
    margin: 0;
}

.feedback-review h3 {
    font-size: 1rem;
}

.feedback-review .exercise-passage.compact {
    padding: 0.8rem;
}

.review-question {
    font-weight: 850;
}

.feedback-value-wrong {
    color: var(--danger);
    font-weight: 900;
}

.feedback-value-correct {
    color: var(--success);
    font-weight: 900;
}

.field-review-table {
    display: grid;
    gap: 0.35rem;
    width: 100%;
}

.field-review-header,
.field-review-row {
    display: grid;
    grid-template-columns: minmax(5rem, 0.7fr) minmax(0, 1fr) minmax(0, 1fr);
    gap: 0.55rem;
    align-items: stretch;
}

.field-review-header {
    color: var(--muted);
    font-size: 0.82rem;
    font-weight: 850;
    text-transform: uppercase;
}

.field-review-row span {
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.72);
    padding: 0.55rem 0.65rem;
    font-weight: 850;
}

.field-review-row .field-review-subject {
    color: var(--ink);
}

.field-review-row .field-review-user {
    color: var(--success);
}

.field-review-row.field-review-incorrect .field-review-user,
.field-review-row.field-review-missing .field-review-user {
    border-color: rgba(180, 35, 24, 0.35);
    background: rgba(180, 35, 24, 0.08);
    color: var(--danger);
}

.field-review-row .field-review-correct {
    border-color: rgba(22, 101, 52, 0.3);
    background: rgba(22, 101, 52, 0.08);
    color: var(--success);
}

.reading-activity,
.reading-question-panel,
.reading-results {
    display: grid;
    gap: 1rem;
    width: min(100%, 760px);
    margin-inline: auto;
    text-align: left;
}

.reading-activity-header h3,
.reading-question-panel h3,
.reading-results h3 {
    margin: 0;
}

.reading-activity-header {
    display: grid;
    gap: 0.25rem;
    text-align: center;
}

.reading-activity-header h3 {
    color: var(--text);
    font-size: clamp(1.45rem, 4vw, 2.15rem);
    font-weight: 950;
    line-height: 1.15;
}

.reading-passage-card {
    position: relative;
    display: grid;
    gap: 1rem;
    border: 1px solid rgba(37, 99, 235, 0.2);
    border-left: 0.45rem solid var(--primary);
    border-radius: var(--radius-lg);
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(255, 253, 247, 0.98)),
        #ffffff;
    padding: clamp(1.15rem, 3vw, 1.8rem);
    box-shadow: 0 16px 34px rgba(20, 33, 61, 0.08);
    color: #19233d;
    font-size: clamp(1.05rem, 2.4vw, 1.18rem);
    line-height: 1.78;
}

.reading-passage-card p {
    margin: 0;
}

.reading-passage-card p + p {
    padding-top: 0.75rem;
    border-top: 1px solid rgba(217, 226, 236, 0.8);
}

.reading-question-heading {
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem 0.8rem;
    align-items: end;
    justify-content: space-between;
    border-bottom: 1px solid var(--line);
    padding-bottom: 0.7rem;
}

.reading-question-heading .eyebrow {
    margin: 0;
}

.reading-question-card {
    position: relative;
    border: 1px solid rgba(198, 211, 225, 0.95);
    border-radius: var(--radius-lg);
    background: rgba(255, 255, 255, 0.94);
    padding: clamp(1rem, 3vw, 1.25rem);
    margin: 0;
    box-shadow: 0 10px 24px rgba(20, 33, 61, 0.06);
}

.reading-question-card + .reading-question-card,
.reading-result-item + .reading-result-item {
    margin-top: 0.9rem;
}

.reading-question-card legend {
    display: flex;
    gap: 0.65rem;
    align-items: center;
    width: 100%;
    color: var(--text);
    font-size: clamp(1rem, 2.5vw, 1.12rem);
    font-weight: 900;
    line-height: 1.35;
    padding: 0 0.35rem;
}

.reading-question-card legend span {
    display: inline-flex;
    flex: 0 0 auto;
    min-height: 2rem;
    align-items: center;
    border-radius: 999px;
    background: linear-gradient(180deg, #fef3c7, var(--accent-soft));
    border: 1px solid rgba(245, 158, 11, 0.28);
    color: var(--primary-dark);
    padding: 0.15rem 0.65rem;
    font-size: 0.88rem;
}

.reading-choice-grid {
    margin-top: 1rem;
}

.reading-choice-grid .choice-tile {
    min-height: 4rem;
    border-color: rgba(198, 211, 225, 0.95);
    background: #fbfdff;
}

.reading-choice-grid .choice-tile:has(input:checked) {
    border-color: var(--primary);
    background: var(--primary-soft);
    box-shadow: 0 14px 28px rgba(37, 99, 235, 0.14);
}

.reading-choice-grid .choice-tile input {
    width: 1.15rem;
    height: 1.15rem;
    accent-color: var(--primary);
}

.reading-result-list {
    padding-left: 1.25rem;
}

.reading-result-item {
    border: 1px solid var(--line);
    border-left: 0.35rem solid var(--line-strong);
    border-radius: var(--radius-md);
    background: #ffffff;
    padding: 0.9rem;
}

.reading-result-correct {
    border-left-color: var(--success);
}

.reading-result-incorrect {
    border-left-color: var(--danger);
}

.reading-evidence {
    border-left: 0.25rem solid var(--focus);
    background: var(--accent-soft);
    padding: 0.65rem 0.8rem;
}

.feedback-correct {
    border-left-color: var(--success);
    background: var(--success-soft);
}

.feedback-incorrect,
.feedback-invalid {
    border-left-color: var(--danger);
    background: var(--danger-soft);
}

.feedback-partially_correct,
.feedback-needs_review,
.feedback-unscorable {
    border-left-color: var(--focus);
    background: var(--accent-soft);
}

@media (max-width: 42rem) {
    .site-shell {
        width: min(100% - 1rem, 72rem);
    }

    .site-header .site-shell {
        align-items: flex-start;
    }

    .site-nav {
        width: 100%;
        overflow-x: auto;
        flex-wrap: nowrap;
        padding-bottom: 0.2rem;
    }

    .site-nav a {
        flex: 0 0 auto;
    }

    .metric-grid,
    .dashboard-stats {
        grid-template-columns: 1fr;
    }

    .button,
    button,
    input[type="submit"] {
        width: 100%;
    }

    .token-bank .token-button,
    .ordered-answer .ordered-chip {
        width: auto;
    }

    .actions {
        align-items: stretch;
    }

    .actions > *,
    .actions form {
        width: 100%;
    }

    .grammar-clue {
        grid-template-columns: 1fr;
        gap: 0.2rem;
    }

    .conjugation-table-row {
        grid-template-columns: 1fr;
    }

    .choice-grid {
        grid-template-columns: 1fr;
    }
}

@media (prefers-contrast: more) {
    .grammar-clue,
    .grammar-clues,
    .grammar-review {
        background: #ffffff;
        border-color: var(--text);
    }
}

/* ---------------------------------------------------------------------------
   Shared component layer, aligned with MathBrain.

   MathBrain and LingoBrain are separate projects but the same family of
   products, and a parent moves between them. The tokens were already shared;
   these are the components that were not: the top bar, cards, chips, pagers
   and the child-facing play shell. Where the two products disagreed on a
   value (button radius, control height) LingoBrain now follows MathBrain.
   --------------------------------------------------------------------------- */

/* Buttons: MathBrain uses a 16px radius and a 48px target, not a pill. */
.button,
button,
input[type="submit"] {
    min-height: 48px;
    border-radius: 16px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    font-weight: 700;
    box-shadow: 0 10px 18px rgba(37, 99, 235, 0.2);
}

.button.compact,
button.compact {
    min-height: 38px;
    padding: 0 14px;
    border-radius: 12px;
    font-size: 0.9rem;
}

.button.danger,
button.danger {
    background: linear-gradient(135deg, #dc2626 0%, #991b1b 100%);
    box-shadow: 0 10px 18px rgba(220, 38, 38, 0.2);
}

/* A submit button should hug its label rather than span the form. */
form > button,
form > input[type="submit"] {
    width: auto;
}

/* Top bar ------------------------------------------------------------------ */

.site-header .site-shell.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: nowrap;
    min-height: 4.75rem;
    padding-block: 0.75rem;
}

.site-nav {
    flex: 1 1 auto;
    flex-wrap: nowrap;
    justify-content: center;
    min-width: 0;
    overflow-x: auto;
    scrollbar-width: none;
}

.site-nav::-webkit-scrollbar { display: none; }

.site-nav a {
    white-space: nowrap;
}

/* Without this the parent had no way to tell which page they were on. */
.site-nav a.is-current {
    color: var(--primary-dark);
    border-color: rgba(37, 99, 235, 0.35);
    background: var(--primary-soft);
}

.topbar-meta {
    display: flex;
    align-items: center;
    gap: 10px;
    flex: 0 0 auto;
}

.active-child-form { margin: 0; }

.active-child-chip {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    min-height: 38px;
    padding: 2px 10px 2px 12px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.94);
}

.active-child-chip::before {
    content: "";
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    flex: 0 0 auto;
}

.active-child-label {
    font-size: 0.74rem;
    font-weight: 800;
    color: var(--muted);
    white-space: nowrap;
}

.active-child-select {
    min-height: 30px;
    max-width: 11rem;
    padding: 0 4px;
    border: 0;
    background: transparent;
    font-weight: 800;
    font-size: 0.9rem;
}

/* Account menu ------------------------------------------------------------- */

.account-menu { position: relative; }

.account-menu-trigger {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    min-height: 38px;
    padding: 0 12px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.94);
    color: var(--text);
    font-weight: 800;
    font-size: 0.9rem;
    cursor: pointer;
    list-style: none;
}

.account-menu-trigger::-webkit-details-marker { display: none; }

.account-menu[open] .account-menu-trigger {
    border-color: rgba(37, 99, 235, 0.35);
    background: var(--primary-soft);
}

.account-menu-panel {
    position: absolute;
    right: 0;
    top: calc(100% + 8px);
    z-index: 20;
    display: grid;
    gap: 2px;
    min-width: 14rem;
    padding: 8px;
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    background: var(--surface-strong);
    box-shadow: var(--shadow);
}

.account-menu-panel a {
    padding: 9px 10px;
    border-radius: 10px;
    font-weight: 700;
    font-size: 0.94rem;
    text-decoration: none;
}

.account-menu-panel a:hover { background: var(--primary-soft); }

/* Landing page ------------------------------------------------------------- */

.hero-lead {
    max-width: 52ch;
    font-size: 1.06rem;
    color: var(--muted);
}

.inline-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-block: 0.4rem 0.9rem;
}

.chip-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.status-chip {
    display: inline-flex;
    align-items: center;
    min-height: 30px;
    padding: 0 12px;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.8);
    color: var(--muted);
    font-size: 0.86rem;
    font-weight: 800;
}

.feature-grid {
    display: grid;
    gap: 12px;
    grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr));
}

.feature-card {
    padding: 14px;
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.66);
}

.feature-card strong { display: block; margin-bottom: 4px; }

.steps-list {
    display: grid;
    gap: 12px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.steps-list strong { display: block; margin-bottom: 2px; }

.narrow-page { max-width: 42rem; }

/* Lists, filters and pagers ------------------------------------------------ */

.filter-bar {
    display: flex;
    flex-wrap: wrap;
    align-items: end;
    gap: 10px;
    padding: 12px 14px;
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    background: var(--surface);
}

.filter-field { display: grid; gap: 2px; }

.filter-bar label {
    font-size: 0.8rem;
    font-weight: 800;
    color: var(--muted);
}

.filter-bar input,
.filter-bar select { min-width: 12rem; width: auto; }

.pager {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
}

.pager-status { color: var(--muted); font-size: 0.9rem; }

.pager [aria-disabled="true"] { opacity: 0.45; pointer-events: none; }

/* Footer ------------------------------------------------------------------- */

.site-footer {
    margin-top: 3rem;
    border-top: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.6);
}

.footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
    padding-block: 1.4rem 2rem;
}

.footer-brand p { max-width: 34ch; margin: 4px 0 0; font-size: 0.9rem; }

.footer-language-form {
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer-language-form label { font-size: 0.85rem; color: var(--muted); }

.footer-language-form select { min-height: 38px; width: auto; }

/* Child-facing play shell -------------------------------------------------- */

/* During a session the child should see the exercise, not the parent's
   navigation. */
.play-shell .site-header,
.play-shell .site-footer { display: none; }

/* Row above the scoreboard: the way out and the way to stop. */
.play-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
    padding-block: 0.9rem 0;
}

.play-bar form { margin: 0; }

.play-exit {
    display: inline-flex;
    align-items: center;
    min-height: 38px;
    padding: 0 14px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.9);
    color: var(--muted);
    font-weight: 800;
    font-size: 0.9rem;
    text-decoration: none;
}

/* Scoreboard, matching MathBrain's solo header. */
.play-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 20px 22px;
    background: var(--surface);
    border: 1px solid rgba(198, 211, 225, 0.9);
    box-shadow: var(--shadow-soft);
}

.play-header-main {
    display: grid;
    gap: 8px;
    min-width: 0;
}

.play-header-main h1 {
    margin: 0;
    font-size: clamp(1.6rem, 4vw, 2.3rem);
}

.score-pill {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 126px;
    min-height: 72px;
    padding: 12px 18px;
    border-radius: 20px;
    background: linear-gradient(135deg, #ffffff 0%, #fff0cc 100%);
    border: 1px solid #f0d48d;
    text-align: center;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

.score-pill strong {
    display: block;
    font-size: 1.75rem;
    line-height: 1;
}

.solo-progress-track {
    width: min(340px, 100%);
    height: 10px;
    border-radius: 999px;
    background: rgba(148, 163, 184, 0.18);
    overflow: hidden;
    margin-top: 4px;
}

.solo-progress-fill {
    height: 100%;
    border-radius: inherit;
    background: linear-gradient(90deg, #22c55e 0%, #2563eb 100%);
    transition: width 220ms ease;
}

@media (max-width: 40rem) {
    .play-header {
        align-items: stretch;
        flex-direction: column;
    }

    .score-pill { min-height: 60px; }
}

/* The brand, the nav, the child picker and the account menu do not fit on one
   row below a wide desktop, and squeezing them clipped the first nav item. */
@media (max-width: 64rem) {
    .site-header .site-shell.topbar { flex-wrap: wrap; }
    .site-nav {
        order: 3;
        flex-basis: 100%;
        justify-content: flex-start;
        padding-bottom: 2px;
    }
}

@media (max-width: 36rem) {
    .account-menu-label { display: none; }
    .active-child-select { max-width: 7.5rem; }
}

/* The landing hero filled a whole viewport and centred its text, which pushed
   the first line of copy far below the fold. */
.hero {
    min-height: 0;
    align-content: start;
    padding-block: clamp(1.5rem, 5vw, 3rem) 1.5rem;
}

.hero h1 {
    max-width: 18ch;
    font-size: clamp(2rem, 5.5vw, 3.1rem);
}

/* Destructive and rarely used profile actions, folded away from the routine
   ones they used to sit beside. */
.danger-zone summary {
    cursor: pointer;
    font-weight: 800;
    color: var(--muted);
}

.danger-zone[open] summary { margin-bottom: 0.75rem; }

/* A long heading used to push its action button onto its own line. */
.section-heading > :first-child { flex: 1 1 18rem; min-width: 0; }
.section-heading > :last-child { flex: 0 0 auto; }

/* Form fields ------------------------------------------------------------- */

.field { margin-bottom: 0.9rem; }

.field > label {
    display: block;
    margin-bottom: 0.3rem;
    font-weight: 800;
    font-size: 0.92rem;
}

.field .helptext {
    margin: 0.3rem 0 0;
    font-size: 0.86rem;
}

.field .errorlist {
    margin: 0.3rem 0 0;
    padding-left: 1.1rem;
    font-size: 0.88rem;
}

/* An auth form on the bare page background read as unfinished; it now sits in
   a card like every other block of content. */
.auth-card {
    width: min(30rem, 100%);
    margin-inline: auto;
}

.auth-card form > button { width: 100%; }

.auth-alt {
    margin-top: 0.4rem;
    text-align: center;
    font-size: 0.92rem;
}

/* The signed-out header puts real buttons inside the nav, where the generic
   `.site-nav a` rules fought the `.button` rules and mangled the labels. */
.site-nav a.button {
    min-height: 40px;
    padding: 0 16px;
    border-radius: 14px;
    color: #fff;
    font-weight: 700;
}

.site-nav a.button.secondary {
    color: var(--primary-dark);
}

.site-nav a.button:hover {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-dark) 100%);
    transform: translateY(-1px);
}

.site-nav a.button.secondary:hover {
    background: var(--primary-soft);
}

/* Practice focus page ------------------------------------------------------ */

.focus-page { padding-bottom: 6rem; }

/* The save button used to be the last thing after a hundred checkboxes. */
.focus-actions {
    position: sticky;
    bottom: 0;
    z-index: 4;
    display: flex;
    gap: 10px;
    align-items: center;
    padding: 0.85rem clamp(0.75rem, 3vw, 1.35rem);
    margin-inline: calc(clamp(0.75rem, 3vw, 1.35rem) * -1);
    border-top: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.94);
    backdrop-filter: blur(12px);
    box-shadow: 0 -10px 24px rgba(20, 33, 61, 0.07);
}

.verb-picker {
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    padding: 0.75rem 0.9rem;
    background: rgba(255, 255, 255, 0.6);
}

.verb-picker > summary {
    cursor: pointer;
    font-weight: 800;
    color: var(--primary-dark);
}

.verb-picker[open] > summary { margin-bottom: 0.75rem; }

.audio-help {
    margin-top: 0.5rem;
    font-size: 0.9rem;
    color: var(--muted);
}

.audio-help > summary { cursor: pointer; font-weight: 800; }

.audio-help label {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 0.4rem;
}

.audio-help select { width: auto; min-height: 38px; }

/* Recent sessions list: date, outcome and status on one line. */
.session-list li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.session-list li > a { font-weight: 800; }
.session-list li > .muted { flex: 1 1 auto; font-size: 0.9rem; }


/* Collapsible navigation ---------------------------------------------------- */

/* The button only exists on narrow screens; the script that drives it hides
   nothing until then. */
.nav-toggle {
    display: none;
    flex: 0 0 auto;
    width: auto;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 40px;
    padding: 0 12px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.94);
    color: var(--text);
    font-weight: 800;
    font-size: 0.9rem;
    box-shadow: none;
}

.nav-toggle-bars,
.nav-toggle-bars::before,
.nav-toggle-bars::after {
    display: block;
    width: 17px;
    height: 2px;
    border-radius: 2px;
    background: currentColor;
}

.nav-toggle-bars {
    position: relative;
}

.nav-toggle-bars::before,
.nav-toggle-bars::after {
    content: "";
    position: absolute;
    left: 0;
}

.nav-toggle-bars::before { top: -5px; }
.nav-toggle-bars::after { top: 5px; }

.nav-toggle[aria-expanded="true"] {
    border-color: rgba(37, 99, 235, 0.35);
    background: var(--primary-soft);
    color: var(--primary-dark);
}

@media (max-width: 48rem) {
    .site-header .site-shell.topbar {
        position: relative;
        flex-wrap: nowrap;
        gap: 8px;
    }

    .nav-toggle { display: inline-flex; }

    /* Below this width the six entries cannot share a row with the brand, the
       child picker and the account menu, so they become a panel. */
    .site-nav {
        display: none;
        position: absolute;
        left: 0;
        right: 0;
        top: calc(100% + 6px);
        z-index: 20;
        flex-basis: auto;
        flex-direction: column;
        align-items: stretch;
        gap: 2px;
        padding: 8px;
        border: 1px solid var(--line);
        border-radius: var(--radius-md);
        background: var(--surface-strong);
        box-shadow: var(--shadow);
        overflow: visible;
    }

    .site-nav.is-open { display: flex; }

    .site-nav a {
        justify-content: flex-start;
        min-height: 2.75rem;
        border-radius: 10px;
    }

    .nav-toggle-label { display: none; }
    .brand-mark { width: 2.35rem; height: 2.35rem; }
    .brand-name { font-size: 1.05rem; }
    .brand { gap: 0.5rem; }
    .account-menu-label { display: none; }
    .active-child-select { max-width: 6.5rem; }
    .topbar-meta { margin-left: auto; }
}

@media (max-width: 30rem) {
    .active-child-label { display: none; }
    .active-child-select { max-width: 5.5rem; }
}

@media (max-width: 26rem) {
    /* Last resort on the narrowest phones: the name stays, the mark shrinks. */
    .brand-mark { width: 2rem; height: 2rem; }
    .brand-name { font-size: 0.95rem; }
    .nav-toggle { padding: 0 10px; }
    .active-child-chip { padding-inline: 8px; }
}

/* Child progression --------------------------------------------------------- */

.level-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    background: var(--surface);
    border: 1px solid rgba(198, 211, 225, 0.9);
    box-shadow: var(--shadow-soft);
}

.level-card-main { display: grid; gap: 8px; min-width: 0; }
.level-card-main h2 { margin: 0; }

/* One bar per day of the window; quiet days keep their slot so the rhythm of
   practice is visible, not just the busy days. */
.activity-chart {
    display: flex;
    align-items: flex-end;
    gap: 3px;
    height: 110px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.activity-chart li {
    flex: 1 1 0;
    display: flex;
    align-items: flex-end;
    height: 100%;
    min-width: 0;
}

.activity-bar {
    display: block;
    width: 100%;
    min-height: 3px;
    border-radius: 3px 3px 0 0;
    background: linear-gradient(180deg, #2563eb 0%, #22c55e 100%);
}

.activity-chart li:has(.activity-bar[style*="height: 0%"]) .activity-bar {
    background: rgba(148, 163, 184, 0.28);
}

.activity-scale {
    display: flex;
    justify-content: space-between;
    font-size: 0.82rem;
    margin: 0;
}

.badge-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(14rem, 1fr));
    gap: 10px;
    margin: 0;
    padding: 0;
    list-style: none;
}

/* Badge colour encodes the kind of achievement, not the badge itself:
   accuracy (green), habit (blue), mastery (purple), discovery (amber).
   Each tile sets the pair once and everything inside reads from it. */
.badge-tile-accuracy { --badge: var(--success); --badge-soft: var(--success-soft); }
.badge-tile-habit { --badge: var(--primary); --badge-soft: var(--primary-soft); }
.badge-tile-mastery { --badge: var(--special); --badge-soft: var(--special-soft); }
.badge-tile-discovery { --badge: var(--accent-dark); --badge-soft: var(--accent-soft); }

.badge-tile {
    display: grid;
    gap: 4px;
    align-content: start;
    padding: 12px 14px 12px 16px;
    border: 1px solid var(--line);
    border-left: 4px solid var(--badge, var(--line-strong));
    border-radius: var(--radius-md);
    background: var(--badge-soft, rgba(255, 255, 255, 0.8));
}

.badge-tile strong { color: var(--badge, var(--text)); }
.badge-tile .status-chip { justify-self: start; margin-top: 4px; }
.badge-tile .muted { font-size: 0.86rem; }

/* The date it was won carries the family colour, so an earned badge is
   unmistakable at a glance rather than only on reading the chip. */
.badge-chip-earned {
    background: var(--surface-strong);
    border-color: var(--badge, var(--line-strong));
    color: var(--badge, var(--text));
    font-weight: 600;
}

/* A locked badge stays readable — it is the next goal, not a disabled
   control. It keeps the family colour only as a marker on the edge, so the
   grouping still reads without competing with what the child has won. */
.badge-tile-locked {
    background: transparent;
    border-style: dashed;
    border-left-style: solid;
    /* Plain fallback first: without it, a browser that cannot compute the
       mix would keep the full-strength colour and a locked badge would read
       as won. */
    border-left-color: var(--line-strong);
    border-left-color: color-mix(in srgb, var(--badge, var(--line-strong)) 35%, transparent);
}

.badge-tile-locked strong { color: var(--muted); }

.skill-progress-list li {
    display: grid;
    grid-template-columns: minmax(8rem, 1fr) minmax(4rem, 10rem) auto auto;
    align-items: center;
    gap: 0.75rem;
}

.skill-progress-track {
    display: block;
    height: 8px;
    border-radius: 999px;
    background: rgba(148, 163, 184, 0.18);
    overflow: hidden;
}

.skill-progress-fill {
    display: block;
    height: 100%;
    border-radius: inherit;
    background: linear-gradient(90deg, #22c55e 0%, #2563eb 100%);
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip-path: inset(50%);
    white-space: nowrap;
}

@media (max-width: 40rem) {
    .level-card { flex-direction: column; align-items: stretch; }
    .skill-progress-list li { grid-template-columns: 1fr auto; }
    .skill-progress-track { grid-column: 1 / -1; }
}

/* Shared session scoreboard ------------------------------------------------- */

.player-scores {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin: 0;
    padding: 0;
    list-style: none;
}

.player-score {
    display: grid;
    gap: 2px;
    min-width: 5.5rem;
    padding: 10px 14px;
    border: 1px solid var(--line);
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.9);
    text-align: center;
}

.player-score-name {
    font-size: 0.78rem;
    font-weight: 800;
    color: var(--muted);
}

.player-score strong { font-size: 1.4rem; line-height: 1; }

/* Whose turn it is has to be obvious from across a table. */
.player-score-turn {
    border-color: #f0d48d;
    background: linear-gradient(135deg, #ffffff 0%, #fff0cc 100%);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

.player-score-turn .player-score-name { color: var(--accent-dark); }

/* ---------------------------------------------------------------------------
   The child page: one bar for the six things a parent reads about one child.
   The tabs scroll sideways rather than wrapping, so the row keeps its shape on
   a phone instead of becoming a two-line block that pushes the page down.
   --------------------------------------------------------------------------- */
.child-tabs {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    scrollbar-width: none;
    padding-bottom: 2px;
}

.child-tabs::-webkit-scrollbar { display: none; }

.child-tab {
    display: inline-flex;
    align-items: center;
    min-height: 44px;
    padding: 0 16px;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.85);
    color: var(--muted);
    font-weight: 800;
    white-space: nowrap;
    text-decoration: none;
}

.child-tab:hover { color: var(--primary-dark); }

.child-tab.is-current {
    color: var(--primary-dark);
    border-color: rgba(37, 99, 235, 0.35);
    background: var(--primary-soft);
}

.child-page-header .chip-row { margin-top: 8px; }

.enrollment-picker {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 0;
}

.enrollment-picker select {
    min-height: 44px;
    padding: 0 12px;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: #fff;
}

/* A finding is an observation, not a verdict: the colour marks the kind of
   thing being said and nothing is painted red. */
.finding { border-left: 3px solid var(--line); padding-left: 12px; }
.finding-support { border-left-color: #f59e0b; }
.finding-notice { border-left-color: #2563eb; }
.finding-positive { border-left-color: #10b981; }

.trend-delta { font-variant-numeric: tabular-nums; }

/* ---------------------------------------------------------------------------
   Support, contact and consents.
   --------------------------------------------------------------------------- */

/* The one warm colour in the chrome, so "support" reads as an invitation
   rather than as another navigation item. */
.support-button {
    background: linear-gradient(135deg, #ffdd8f 0%, #f59e0b 100%);
    color: #4a2b00;
    border-color: rgba(180, 110, 0, 0.35);
}

.support-button:hover { color: #3a2100; }

/* The honeypot: off-screen rather than display:none, because a bot that skips
   hidden fields would step over a display:none input — and the point is for it
   to fill this one in. Screen readers are kept away by aria-hidden. */
.antispam-field {
    position: absolute;
    left: -9999px;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

.contact-form textarea { width: 100%; }

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 10px;
}

.footer-links a { font-weight: 700; }
.footer-support-link { color: #b45309; }

.consent-card-granted { border-left: 3px solid #10b981; }
.consent-meta { font-size: 0.9rem; }
.consent-decision { margin: 0; }

/* Google sign-in and the way out of a forgotten password. */
.auth-forgot { margin: 10px 0 0; font-size: 0.95rem; }

.auth-provider { margin-top: 6px; }

/* A rule with the word "or" sitting in it, so the two ways in read as
   alternatives rather than as a form followed by a stray button. */
.auth-divider {
    display: flex;
    align-items: center;
    gap: 12px;
    margin: 18px 0 12px;
    color: var(--muted);
    font-size: 0.9rem;
}

.auth-divider::before,
.auth-divider::after {
    content: "";
    flex: 1;
    height: 1px;
    background: var(--line);
}

.auth-google { width: 100%; justify-content: center; }

/* The share panel in the footer. */
.share-panel { margin-top: 14px; }
.share-panel-lead { margin: 0 0 8px; font-weight: 700; }

.share-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.share-feedback {
    margin: 8px 0 0;
    color: #047857;
    font-weight: 700;
}

/* A notion and the button that activates it sit on one line, so the list reads
   as names rather than as a column of buttons. */
.notion-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    flex-wrap: wrap;
}