/* ==========================================================================
   Maths Explorer — stylesheet
   Friendly, high-contrast, large-target design for young learners.
   ========================================================================== */

:root {
  --bg: #F5F9FF;
  --surface: #FFFFFF;
  --surface-2: #EEF4FF;
  --text: #14213D;
  --muted: #5A6B8C;
  --border: #D8E2F2;
  --primary: #2563EB;
  --primary-dark: #1D4ED8;
  --success: #15803D;
  --success-bg: #DCFCE7;
  --wrong: #B91C1C;
  --wrong-bg: #FEE2E2;
  --star: #F59E0B;
  --shadow: 0 6px 20px rgba(20, 33, 61, 0.10);
  --shadow-sm: 0 2px 8px rgba(20, 33, 61, 0.08);
  --radius: 20px;
  --radius-sm: 14px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-easy: "Comic Sans MS", "Comic Neue", "Verdana", "Trebuchet MS", sans-serif;
  --maxw: 1000px;
}

/* Easy-read font toggle -------------------------------------------------- */
html[data-easyread="true"] body { font-family: var(--font-easy); letter-spacing: 0.01em; }

/* High-contrast toggle --------------------------------------------------- */
html[data-contrast="true"] {
  --bg: #000000;
  --surface: #0A0A0A;
  --surface-2: #141414;
  --text: #FFFFFF;
  --muted: #D0D0D0;
  --border: #4A4A4A;
  --primary: #FFD400;
  --primary-dark: #FFE45E;
  --success: #7CFF9B;
  --success-bg: #103B1B;
  --wrong: #FF8A8A;
  --wrong-bg: #3B1010;
  --star: #FFD400;
  --shadow: 0 0 0 2px #4A4A4A;
  --shadow-sm: 0 0 0 2px #4A4A4A;
}

/* Calm-motion toggle ----------------------------------------------------- */
html[data-motion="off"] *,
html[data-motion="off"] *::before,
html[data-motion="off"] *::after {
  transition: none !important;
  animation: none !important;
  scroll-behavior: auto !important;
}

/* Base ------------------------------------------------------------------- */
* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
  -webkit-text-size-adjust: 100%;
}

h1, h2, h3 { line-height: 1.2; margin: 0 0 0.5em; }
h1 { font-size: 2rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.2rem; }
p { margin: 0 0 1em; }
a { color: var(--primary); }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 18px; }

.visually-hidden {
  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 -------------------------------------------------------------- */
.skip-link {
  position: absolute; left: 12px; top: -60px; z-index: 100;
  background: var(--primary); color: #fff; padding: 10px 16px;
  border-radius: 0 0 12px 12px; text-decoration: none; font-weight: 700;
}
.skip-link:focus { top: 0; }

/* Focus visibility ------------------------------------------------------- */
:focus-visible { outline: 4px solid var(--primary); outline-offset: 3px; border-radius: 6px; }

/* Header ----------------------------------------------------------------- */
.site-header {
  background: var(--surface);
  border-bottom: 2px solid var(--border);
  position: sticky; top: 0; z-index: 50;
}
.header-inner {
  display: flex; flex-wrap: wrap; gap: 10px 16px;
  align-items: center; justify-content: space-between;
  padding: 12px 18px; max-width: var(--maxw); margin: 0 auto;
}
.brand {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 1.35rem; font-weight: 800; color: var(--text);
  text-decoration: none;
}
.brand .brand-icon { font-size: 1.6rem; }
.brand small { display: block; font-size: 0.7rem; font-weight: 600; color: var(--muted); }

/* Accessibility toolbar -------------------------------------------------- */
.toolbar { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.tool {
  font: inherit; font-weight: 700; font-size: 0.9rem;
  background: var(--surface-2); color: var(--text);
  border: 2px solid var(--border); border-radius: 999px;
  padding: 8px 14px; cursor: pointer; min-height: 44px;
  display: inline-flex; align-items: center; gap: 6px;
}
.tool:hover { background: var(--border); }
.tool[aria-pressed="true"] { background: var(--primary); color: #fff; border-color: var(--primary); }
html[data-contrast="true"] .tool[aria-pressed="true"] { color: #000; }

/* Main ------------------------------------------------------------------- */
main { padding: 28px 0 60px; }

.section-title { margin-top: 8px; }

/* Buttons ---------------------------------------------------------------- */
.btn {
  font: inherit; font-weight: 800; font-size: 1.05rem;
  background: var(--primary); color: #fff; border: none;
  border-radius: var(--radius-sm); padding: 14px 22px; cursor: pointer;
  min-height: 52px; text-decoration: none; display: inline-flex;
  align-items: center; justify-content: center; gap: 8px;
}
.btn:hover { background: var(--primary-dark); }
html[data-contrast="true"] .btn:not(.btn--ghost) { color: #000; }
.btn--ghost { background: var(--surface-2); color: var(--text); border: 2px solid var(--border); }
.btn--ghost:hover { background: var(--border); }
html[data-contrast="true"] .btn--ghost { color: var(--text); }

/* Home hero -------------------------------------------------------------- */
.hero { text-align: center; margin: 10px 0 26px; }
.hero .hero-emoji { font-size: 3rem; display: block; margin-bottom: 6px; }
.hero h1 { font-size: 2.3rem; }
.hero p { color: var(--muted); font-size: 1.1rem; max-width: 620px; margin: 0 auto 1em; }

/* Year picker ------------------------------------------------------------ */
.year-grid {
  display: grid; gap: 16px;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
}
.year-card {
  position: relative; background: var(--surface); border: 2px solid var(--border);
  border-radius: var(--radius); padding: 20px 16px; text-align: center;
  text-decoration: none; color: var(--text); box-shadow: var(--shadow-sm);
  display: flex; flex-direction: column; align-items: center; gap: 6px;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  min-height: 150px; justify-content: center;
}
.year-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.year-card .year-icon { font-size: 2.4rem; }
.year-card .year-label { font-weight: 800; font-size: 1.1rem; }
.year-card .year-badge {
  font-size: 0.75rem; font-weight: 700; border-radius: 999px;
  padding: 3px 10px; background: var(--surface-2); color: var(--muted);
}
.year-card .year-badge--ready { background: #DCFCE7; color: #166534; }
.year-card[aria-disabled="true"] { opacity: 0.62; cursor: not-allowed; filter: grayscale(0.3); }
.year-card[aria-disabled="true"]:hover { transform: none; box-shadow: var(--shadow-sm); }
.year-card .year-bar { position: absolute; top: 0; left: 0; right: 0; height: 6px; border-radius: var(--radius) var(--radius) 0 0; }

/* Breadcrumb / back ------------------------------------------------------ */
.back-link {
  display: inline-flex; align-items: center; gap: 6px; font-weight: 700;
  color: var(--primary); text-decoration: none; margin-bottom: 14px;
  min-height: 44px;
}
.back-link:hover { text-decoration: underline; }

/* Year hub --------------------------------------------------------------- */
.year-hero {
  background: var(--surface); border: 2px solid var(--border);
  border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow-sm);
  margin-bottom: 22px; border-top: 8px solid var(--primary);
}
.year-hero .year-hero-top { display: flex; align-items: center; gap: 14px; }
.year-hero .year-hero-icon { font-size: 3rem; }
.year-hero p.kid-intro { font-size: 1.08rem; margin: 10px 0 0; }

.can-do {
  background: var(--surface); border: 2px solid var(--border);
  border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow-sm);
  margin-bottom: 24px;
}
.can-do h2 { display: flex; align-items: center; gap: 8px; }
.can-do ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.can-do li {
  display: flex; gap: 10px; align-items: flex-start;
  background: var(--surface-2); border-radius: var(--radius-sm); padding: 10px 14px;
  font-size: 1.02rem;
}
.can-do li .tick { color: var(--success); font-weight: 900; }

.strand-block { margin-bottom: 26px; }
.strand-heading {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 1.3rem; font-weight: 800; margin-bottom: 12px;
  padding: 6px 14px; border-radius: 999px; color: #fff;
}
.topic-grid {
  display: grid; gap: 14px;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
}
.topic-card {
  background: var(--surface); border: 2px solid var(--border);
  border-radius: var(--radius-sm); padding: 16px; text-decoration: none;
  color: var(--text); box-shadow: var(--shadow-sm); display: flex; gap: 12px;
  align-items: flex-start; transition: transform 0.15s ease, border-color 0.15s ease;
  min-height: 96px;
}
.topic-card:hover { transform: translateY(-3px); border-color: var(--primary); }
.topic-card .topic-icon { font-size: 1.9rem; line-height: 1; }
.topic-card .topic-name { display: block; font-weight: 800; font-size: 1.08rem; }
.topic-card .topic-summary { display: block; color: var(--muted); font-size: 0.95rem; margin-top: 3px; }
.topic-card .stars { display: block; margin-top: 8px; font-size: 0.95rem; letter-spacing: 2px; }

/* Topic page ------------------------------------------------------------- */
.topic-header { display: flex; align-items: center; gap: 14px; margin-bottom: 8px; }
.topic-header .topic-icon { font-size: 2.8rem; }
.topic-header .topic-strand { font-size: 0.85rem; font-weight: 800; text-transform: uppercase; letter-spacing: 0.06em; }

.card {
  background: var(--surface); border: 2px solid var(--border);
  border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow-sm);
  margin-bottom: 20px;
}
.card h2 { display: flex; align-items: center; gap: 10px; }

.learn-list { display: grid; gap: 12px; }
.learn-item {
  display: flex; gap: 12px; align-items: flex-start;
  background: var(--surface-2); border-radius: var(--radius-sm); padding: 14px 16px;
  font-size: 1.08rem;
}
.learn-item .learn-text { flex: 1; }

.speak-btn {
  font: inherit; font-size: 1.1rem; background: transparent; border: none;
  cursor: pointer; min-width: 44px; min-height: 44px; border-radius: 10px;
  display: inline-flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.speak-btn:hover { background: var(--border); }

.example-box {
  background: #FFF9E6; border: 2px dashed #E5B800; border-radius: var(--radius-sm);
  padding: 16px 18px;
}
html[data-contrast="true"] .example-box { background: var(--surface-2); border-style: solid; }
.example-box h3 { margin-top: 0; }
.example-box ol { margin: 8px 0 0; padding-left: 22px; }
.example-box li { margin-bottom: 6px; }

/* Visual examples -------------------------------------------------------- */
.example-visual {
  background: var(--surface); border: 2px solid var(--border);
  border-radius: var(--radius-sm); padding: 14px 16px; margin: 4px 0 16px;
  overflow-x: auto;
}
.example-visual__caption { font-weight: 800; font-size: 1rem; margin-bottom: 10px; color: var(--muted); }
.viz-row { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; }
.viz-caption { margin: 0 0 10px; font-weight: 700; }
.viz-caption--gap { margin-top: 14px; }
.viz-chip {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 44px; min-height: 44px; padding: 6px 14px;
  background: var(--surface-2); border: 2px solid var(--border);
  border-radius: 12px; font-weight: 800; font-size: 1.15rem;
}
.viz-chip--sm { min-width: 38px; min-height: 38px; font-size: 1rem; }
.viz-arrow { font-size: 1.4rem; color: var(--muted); font-weight: 800; }
.viz-order { gap: 8px; }

/* Ten frames and counters */
.tf {
  display: grid; grid-template-columns: repeat(5, 26px); grid-template-rows: repeat(2, 26px);
  gap: 4px; padding: 8px; background: var(--surface-2);
  border-radius: 12px; border: 2px solid var(--border);
}
.tf-cell { width: 26px; height: 26px; border-radius: 6px; background: #fff; border: 2px solid var(--border); }
.tf-cell.tf-on { border-color: transparent; }
.viz-frame-wrap { display: flex; flex-direction: column; align-items: center; gap: 4px; }
.viz-frame-label { font-weight: 800; color: var(--muted); }
.dots { display: grid; grid-template-columns: repeat(3, 26px); gap: 4px; }
.dot { width: 26px; height: 26px; border-radius: 50%; display: inline-block; }
.viz-op { font-size: 1.6rem; font-weight: 900; color: var(--muted); }
.viz-answer {
  font-size: 1.6rem; font-weight: 900; color: var(--primary);
  background: var(--surface-2); border: 2px solid var(--border);
  border-radius: 12px; padding: 4px 16px;
}
.viz-legend { display: flex; align-items: center; gap: 6px; font-weight: 800; flex-wrap: wrap; }
.viz-key { width: 16px; height: 16px; border-radius: 4px; display: inline-block; margin-left: 8px; }

/* Groups / sharing */
.viz-group {
  font-size: 1.6rem; letter-spacing: 2px; padding: 10px 12px;
  background: var(--surface-2); border: 2px dashed var(--border); border-radius: 12px;
}

/* SVG */
.viz-svg { width: 100%; max-width: 320px; height: auto; }
.viz-svg--sm { max-width: 120px; }
.viz-half-label { font-weight: 800; text-align: center; font-size: 1.1rem; }
.viz-half-label strong { font-size: 1.6rem; color: var(--primary); }

/* Repeating sequence */
.viz-seq { gap: 8px; font-size: 1.5rem; }
.viz-unit { border: 3px solid var(--primary); border-radius: 12px; padding: 4px 8px; }
.viz-seq-rest { font-size: 1.5rem; }
.viz-next { font-size: 1.5rem; border: 3px dashed var(--primary); border-radius: 12px; padding: 4px 8px; }
.viz-next-label { font-weight: 800; color: var(--primary); }

/* Money */
.viz-coin {
  width: 54px; height: 54px; border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  background: #FDE68A; border: 3px solid #D97706; font-weight: 900; color: #78350F;
}
.viz-notes { gap: 8px; }
.viz-note {
  padding: 10px 14px; border-radius: 8px; font-weight: 900;
  background: #BBF7D0; border: 3px solid #16A34A; color: #14532D;
}

/* 3D object tiles */
.viz-tile { display: flex; flex-direction: column; align-items: center; gap: 4px; }
.viz-tile-art { font-size: 2.4rem; }
.viz-tile-label { font-weight: 700; font-size: 0.9rem; color: var(--muted); }

/* Shape labels */
.viz-shape-labels { justify-content: space-around; }
.viz-shape-labels span { font-weight: 700; font-size: 0.9rem; color: var(--muted); text-align: center; flex: 1; }

/* Measurement bars */
.measure-row { display: flex; align-items: center; gap: 10px; margin-bottom: 8px; }
.measure-name { width: 64px; font-weight: 700; }
.measure-bar { display: flex; gap: 3px; }
.unit-cell { width: 28px; height: 28px; border-radius: 6px; display: inline-block; }
.measure-count { font-weight: 800; color: var(--muted); }

/* Containers and balance */
.viz-containers, .viz-balance { gap: 10px; }
.viz-cont { display: flex; flex-direction: column; align-items: center; font-size: 2rem; }
.viz-cont small { font-size: 0.75rem; font-weight: 700; color: var(--muted); }
.viz-cont--lg { font-size: 2.8rem; }
.viz-heavy { font-weight: 800; color: var(--primary); }

/* Time */
.viz-digital { display: flex; flex-direction: column; align-items: center; gap: 4px; }
.viz-clock {
  font-family: ui-monospace, Menlo, Consolas, monospace; font-weight: 900;
  font-size: 1.6rem; background: #14213D; color: #7CFF9B;
  padding: 8px 14px; border-radius: 10px; letter-spacing: 1px;
}
html[data-contrast="true"] .viz-clock { background: #000; }
.viz-digital small { font-weight: 700; color: var(--muted); }

/* Directions grid */
.viz-pathgrid { display: grid; grid-template-columns: repeat(3, 52px); gap: 6px; }
.pg-cell {
  width: 52px; height: 52px; display: flex; align-items: center; justify-content: center;
  background: var(--surface-2); border: 2px solid var(--border); border-radius: 10px; font-size: 1.5rem;
}

/* Chance scale */
.chance-scale { max-width: 480px; }
.cs-bar {
  height: 22px; border-radius: 999px;
  background: linear-gradient(90deg, #86EFAC, #FDE68A, #FCA5A5);
  border: 2px solid var(--border);
}
.cs-labels {
  display: flex; justify-content: space-between; margin-top: 6px;
  font-weight: 700; font-size: 0.85rem; color: var(--muted); text-align: center;
}
.viz-chance-chips { margin-top: 12px; }

/* Picture graph */
.picto { display: grid; gap: 8px; }
.picto-row { display: flex; align-items: center; gap: 10px; }
.picto-label { width: 64px; font-weight: 700; }
.picto-marks { font-size: 1.3rem; letter-spacing: 3px; }
.picto-count { font-weight: 800; color: var(--muted); }

/* --- Year 2 visuals --- */
.viz-jump { font-weight: 800; color: var(--primary); font-size: 0.95rem; white-space: nowrap; }
.viz-croc { font-size: 1.7rem; }
.viz-chip--missing { border-style: dashed; color: var(--muted); background: transparent; }
.viz-col-stack { display: flex; flex-direction: column; gap: 6px; align-items: flex-start; }
.viz-svg--xs { max-width: 84px; }

/* Hundreds chart row */
.hundreds { display: grid; grid-template-columns: repeat(5, 1fr); gap: 6px; max-width: 340px; }
.h-cell {
  display: flex; align-items: center; justify-content: center;
  min-height: 38px; background: var(--surface-2); border: 2px solid var(--border);
  border-radius: 8px; font-weight: 800; font-size: 0.95rem;
}
.h-cell.h-on { background: var(--primary); color: #fff; border-color: var(--primary); }
html[data-contrast="true"] .h-cell.h-on { color: #000; }

/* Base-ten blocks */
.bt-row { display: flex; gap: 20px; align-items: flex-end; flex-wrap: wrap; }
.bt-col { display: flex; flex-direction: column; align-items: center; gap: 8px; }
.bt-group { display: flex; gap: 4px; align-items: flex-end; }
.bt-caption { font-weight: 700; font-size: 0.78rem; color: var(--muted); text-align: center; }
.bt-100 {
  width: 58px; height: 58px; border: 2px solid #3B82F6; border-radius: 4px; background-color: #DBEAFE;
  background-image:
    repeating-linear-gradient(90deg, transparent 0 4px, #93C5FD 4px 5px),
    repeating-linear-gradient(0deg, transparent 0 4px, #93C5FD 4px 5px);
}
.bt-10 {
  width: 13px; height: 58px; border: 2px solid #22C55E; border-radius: 4px; background-color: #DCFCE7;
  background-image: repeating-linear-gradient(0deg, transparent 0 4px, #86EFAC 4px 5px);
}
.bt-1 { width: 13px; height: 13px; border: 2px solid #F59E0B; border-radius: 3px; background: #FEF3C7; }

/* Arrays */
.viz-array { display: grid; gap: 6px; }
.viz-array .dot { width: 24px; height: 24px; }

/* Fraction strips */
.frac-strip { margin-bottom: 10px; }
.frac-label { font-weight: 800; font-size: 0.85rem; color: var(--muted); margin-bottom: 3px; }
.frac-bar {
  display: flex; height: 38px; max-width: 420px;
  border: 2px solid var(--border); border-radius: 8px; overflow: hidden;
}
.frac-part { flex: 1; background: var(--surface-2); border-right: 2px solid var(--border); }
.frac-part:last-child { border-right: none; }
.frac-part.f-on { background: #F59E0B; }

/* Calendar */
.viz-cal { display: grid; grid-template-columns: repeat(7, 36px); gap: 4px; }
.cal-cell {
  width: 36px; height: 36px; display: flex; align-items: center; justify-content: center;
  border-radius: 8px; font-weight: 800; font-size: 0.8rem;
  background: var(--surface-2); border: 2px solid var(--border);
}
.cal-cell.cal-head { background: transparent; border: none; color: var(--muted); }
.cal-cell.cal-on { background: var(--primary); color: #fff; border-color: var(--primary); }
html[data-contrast="true"] .cal-cell.cal-on { color: #000; }

/* Possible / impossible columns */
.viz-two-col { display: grid; gap: 14px; grid-template-columns: 1fr; }
@media (min-width: 620px) { .viz-two-col { grid-template-columns: 1fr 1fr; } }
.chance-col { border-radius: var(--radius-sm); padding: 12px 14px; border: 2px solid var(--border); }
.chance-col h4 { margin: 0 0 8px; font-size: 1rem; }
.chance-col ul { margin: 0; padding-left: 18px; }
.chance-col li { margin-bottom: 4px; }
.chance-col--possible { background: var(--success-bg); border-color: var(--success); }
.chance-col--impossible { background: var(--wrong-bg); border-color: var(--wrong); }

/* Quiz ------------------------------------------------------------------- */
.quiz-progress { display: flex; gap: 6px; margin-bottom: 14px; }
.quiz-dot {
  height: 10px; flex: 1; border-radius: 999px; background: var(--border);
}
.quiz-dot--done { background: var(--primary); }
.quiz-question { font-size: 1.4rem; font-weight: 800; margin-bottom: 12px; }
.quiz-hint {
  display: flex; align-items: center; gap: 8px;
  font-size: 0.95rem; color: var(--muted); margin: 0 0 14px;
}
.quiz-hint-icon { font-size: 1.1rem; }
.quiz-options { display: grid; gap: 12px; }
@media (min-width: 640px) { .quiz-options { grid-template-columns: 1fr 1fr; } }
.quiz-option {
  font: inherit; font-size: 1.15rem; font-weight: 700; text-align: left;
  background: var(--surface-2); color: var(--text);
  border: 3px solid var(--border); border-radius: var(--radius-sm);
  padding: 16px 18px; cursor: pointer; min-height: 60px;
  display: flex; align-items: center; gap: 14px;
  transition: border-color 0.12s ease, background 0.12s ease;
}
.quiz-key {
  flex-shrink: 0; width: 38px; height: 38px; border-radius: 10px;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--surface); border: 2px solid var(--border);
  font-weight: 900; font-size: 1.05rem; color: var(--muted);
}
.quiz-option-text { flex: 1; }
.quiz-option:hover:not(:disabled) .quiz-key { border-color: var(--primary); color: var(--primary); }
.quiz-option.correct .quiz-key { background: var(--success); border-color: var(--success); color: #fff; }
.quiz-option.wrong .quiz-key { background: var(--wrong); border-color: var(--wrong); color: #fff; }
.quiz-option:hover:not(:disabled) { border-color: var(--primary); }
.quiz-option:disabled { cursor: default; }
.quiz-option.correct { background: var(--success-bg); border-color: var(--success); color: var(--success); }
.quiz-option.wrong { background: var(--wrong-bg); border-color: var(--wrong); color: var(--wrong); }
.quiz-feedback { margin-top: 16px; font-size: 1.08rem; font-weight: 700; display: flex; gap: 10px; align-items: flex-start; }
.quiz-feedback .fb-icon { font-size: 1.4rem; }
.quiz-actions { margin-top: 18px; display: flex; gap: 10px; flex-wrap: wrap; }

.quiz-result { text-align: center; }
.quiz-result .result-emoji { font-size: 3.4rem; display: block; margin-bottom: 6px; }
.quiz-result .result-stars { font-size: 2.4rem; letter-spacing: 6px; margin: 6px 0 10px; color: var(--star); }
.quiz-result .result-score { font-size: 1.3rem; font-weight: 800; }
.quiz-result p { color: var(--muted); }

/* Grown-ups -------------------------------------------------------------- */
.grownups .prose { white-space: pre-wrap; }
.notice {
  background: var(--surface-2); border-left: 6px solid var(--primary);
  border-radius: var(--radius-sm); padding: 14px 16px; color: var(--muted);
  margin-bottom: 20px;
}

/* Footer ----------------------------------------------------------------- */
.site-footer {
  border-top: 2px solid var(--border); background: var(--surface);
  padding: 22px 0; color: var(--muted); font-size: 0.9rem;
}
.site-footer .footer-inner {
  max-width: var(--maxw); margin: 0 auto; padding: 0 18px;
  display: flex; flex-wrap: wrap; gap: 10px; justify-content: space-between;
}

/* Utility ---------------------------------------------------------------- */
.stack > * + * { margin-top: 16px; }
.center { text-align: center; }
.muted { color: var(--muted); }

/* Read-aloud tip banner -------------------------------------------------- */
.tip {
  display: flex; flex-wrap: wrap; align-items: center; gap: 10px;
  background: #FFF9E6; border: 2px solid #E5B800; border-radius: var(--radius-sm);
  padding: 14px 16px; margin-top: 18px;
}
html[data-contrast="true"] .tip { background: var(--surface-2); border-color: #FFD400; }
.tip .tip-icon { font-size: 1.4rem; }
.tip .tip-text { flex: 1; min-width: 220px; }

/* Toast / status messages ------------------------------------------------ */
.toast {
  position: fixed; left: 50%; bottom: 24px; z-index: 200;
  transform: translate(-50%, 20px);
  background: var(--text); color: var(--surface);
  padding: 14px 20px; border-radius: 14px; font-weight: 700;
  box-shadow: var(--shadow); max-width: min(92vw, 560px); text-align: center;
  opacity: 0; transition: opacity 0.3s ease, transform 0.3s ease;
}
.toast--show { opacity: 1; transform: translate(-50%, 0); }
.toast--error { background: var(--wrong); color: #fff; }
html[data-contrast="true"] .toast { color: #000; border: 2px solid #fff; }
html[data-contrast="true"] .toast--error { color: #000; }

/* Mobile tweaks ---------------------------------------------------------- */
@media (max-width: 560px) {
  h1 { font-size: 1.6rem; }
  .hero h1 { font-size: 1.8rem; }
  .year-grid { grid-template-columns: repeat(2, 1fr); }
  .toolbar { width: 100%; }
}