/* KidZone — shared styles */
:root {
  --green: #009B3A;
  --green-dark: #007A2E;
  --gold: #FED100;
  --gold-dark: #D9B000;
  --star: #F0A500;
  --ink: #1E2430;
  --ink-soft: #4A5363;
  --bg: #FFF8E8;
  --card: #FFFFFF;
  --line: #EADFC4;
  --sky: #29A9E1;
  --coral: #FF6B57;

  --maths: #29A9E1;
  --language: #F06BA8;
  --science: #3DBE6B;
  --social: #FF8A3D;

  --radius: 18px;
  --shadow: 0 4px 0 rgba(30, 36, 48, .10), 0 10px 24px rgba(30, 36, 48, .08);
  --font-head: 'Baloo 2', system-ui, sans-serif;
  --font-body: 'Nunito', system-ui, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.5;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3 { font-family: var(--font-head); line-height: 1.1; margin: 0 0 .4em; }
a { color: inherit; }
button { font: inherit; color: inherit; }
:focus-visible { outline: 3px solid var(--sky); outline-offset: 3px; border-radius: 8px; }
[hidden] { display: none !important; }

.flag-strip { height: 8px; background: linear-gradient(90deg, var(--green) 0 33.3%, var(--gold) 33.3% 66.6%, var(--ink) 66.6%); }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 10px 16px;
  background: rgba(255, 248, 232, .94);
  backdrop-filter: blur(8px);
  border-bottom: 2px solid var(--line);
}
.logo {
  display: flex; align-items: center; gap: 8px;
  text-decoration: none;
  font-family: var(--font-head); font-weight: 800; font-size: 26px;
  color: var(--green);
}
.logo b { color: var(--ink); }
.logo-mark {
  width: 38px; height: 38px; border-radius: 11px;
  display: grid; place-items: center;
  background: var(--gold); color: var(--ink);
  border: 3px solid var(--green);
  transform: rotate(-6deg);
  font-size: 22px;
}
.site-nav { display: flex; gap: 2px; }
.site-nav a { text-decoration: none; font-weight: 800; padding: 8px 12px; border-radius: 999px; }
.site-nav a:hover { background: #fff; }
.header-actions { display: flex; align-items: center; gap: 8px; }
@media (max-width: 560px) {
  .logo { font-size: 22px; }
  .logo-mark { width: 32px; height: 32px; font-size: 18px; }
  .site-nav a { padding: 6px 7px; font-size: 15px; }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border: 0; cursor: pointer; text-decoration: none;
  font-family: var(--font-head); font-weight: 800; font-size: 18px;
  padding: 12px 22px; border-radius: 999px;
  background: #fff; color: var(--ink);
  box-shadow: 0 4px 0 rgba(30, 36, 48, .18);
  transition: transform .08s, box-shadow .08s;
}
.btn:active { transform: translateY(3px); box-shadow: 0 1px 0 rgba(30, 36, 48, .18); }
.btn-primary { background: var(--green); color: #fff; box-shadow: 0 4px 0 var(--green-dark); }
.btn-primary:active { box-shadow: 0 1px 0 var(--green-dark); }
.btn-gold { background: var(--gold); box-shadow: 0 4px 0 var(--gold-dark); }
.btn-big { font-size: 22px; padding: 15px 34px; }
.btn-small { font-size: 15px; padding: 8px 14px; }
.btn:disabled { opacity: .5; cursor: not-allowed; transform: none; }
.icon-btn {
  flex: none; width: 44px; height: 44px; border-radius: 50%;
  border: 2px solid var(--line); background: #fff; cursor: pointer;
  display: inline-grid; place-items: center; font-size: 20px;
}

/* ---------- Hub: hero ---------- */
.hero {
  display: grid; grid-template-columns: 1.2fr 1fr; gap: 24px; align-items: center;
  max-width: 1120px; margin: 0 auto; padding: 48px 16px 24px;
}
.eyebrow {
  display: inline-block; margin: 0;
  background: #fff; border: 2px solid var(--line); border-radius: 999px;
  padding: 4px 12px; font-weight: 800; font-size: 14px; color: var(--green-dark);
}
.hero h1 { font-size: clamp(40px, 7vw, 68px); margin: .3em 0 .2em; }
.hl { color: var(--green); background: linear-gradient(transparent 64%, var(--gold) 64%); }
.hero p { font-size: 19px; color: var(--ink-soft); max-width: 34em; }
.hero-art { position: relative; width: 100%; max-width: 400px; aspect-ratio: 1; justify-self: center; }
.sun {
  position: absolute; inset: 14%; border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, #FFE45C, var(--gold) 60%, #F5B800);
  box-shadow: 0 0 0 18px rgba(254, 209, 0, .25), 0 0 0 36px rgba(254, 209, 0, .12);
}
.float {
  position: absolute; font-size: clamp(36px, 7vw, 58px); line-height: 1;
  animation: bob 4s ease-in-out infinite;
  filter: drop-shadow(0 6px 6px rgba(0, 0, 0, .12));
}
.float.f1 { top: 2%; left: 40%; }
.float.f2 { top: 30%; left: 0; animation-delay: -1s; }
.float.f3 { top: 30%; right: 0; animation-delay: -2s; }
.float.f4 { bottom: 4%; left: 14%; animation-delay: -3s; }
.float.f5 { bottom: 4%; right: 14%; animation-delay: -1.5s; }
.float.f6 { top: 40%; left: 40%; font-size: clamp(48px, 9vw, 76px); animation-delay: -.5s; }
@keyframes bob { 50% { transform: translateY(-10px) rotate(4deg); } }
@media (max-width: 760px) {
  .hero { grid-template-columns: 1fr; padding-top: 24px; text-align: center; }
  .hero p { margin-inline: auto; }
  .hero-art { max-width: 250px; order: -1; }
}

/* ---------- Hub: activity grid ---------- */
.activities { max-width: 1120px; margin: 0 auto; padding: 32px 16px 56px; }
.activities > h2 { font-size: clamp(30px, 5vw, 42px); }
.filters { display: grid; gap: 6px; margin: 12px 0 24px; }
.filter-group { display: flex; gap: 8px; overflow-x: auto; padding: 4px 2px 8px; scrollbar-width: none; }
.filter-group::-webkit-scrollbar { display: none; }
.chip {
  flex: none; white-space: nowrap; cursor: pointer;
  border: 2px solid var(--line); background: #fff; border-radius: 999px;
  padding: 8px 16px; font-weight: 800;
}
.chip:hover { border-color: var(--ink-soft); }
.chip.is-on { background: var(--ink); border-color: var(--ink); color: #fff; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 18px; }
.card {
  --accent: var(--sky);
  display: flex; flex-direction: column; gap: 8px;
  padding: 20px; border-radius: var(--radius);
  background: var(--card); box-shadow: var(--shadow);
  border-top: 8px solid var(--accent);
  text-decoration: none;
  transition: transform .15s;
}
.card:hover { transform: translateY(-4px) rotate(-.4deg); }
.card-icon { font-size: 44px; line-height: 1; }
.card-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.tag {
  font-size: 13px; font-weight: 800; padding: 2px 10px; border-radius: 999px;
  background: color-mix(in srgb, var(--accent) 18%, #fff);
}
.tag-type { background: var(--ink); color: #fff; }
.card h3 { font-size: 24px; margin: 4px 0 0; }
.card p { margin: 0; color: var(--ink-soft); flex: 1; }
.card-foot {
  display: flex; justify-content: space-between; align-items: center;
  padding-top: 8px; border-top: 2px dashed var(--line);
  font-weight: 800; font-size: 14px; color: var(--ink-soft);
}
.stars { color: var(--star); font-size: 20px; letter-spacing: 2px; }
.empty { text-align: center; color: var(--ink-soft); font-weight: 700; padding: 32px 0; }

.grown-ups { background: var(--green); color: #fff; padding: 48px 16px; }
.grown-ups .inner { max-width: 1120px; margin: 0 auto; }
.grown-ups h2 { font-size: clamp(28px, 4.5vw, 38px); }
.points { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 18px; margin-top: 20px; }
.point { background: rgba(255, 255, 255, .1); border-radius: var(--radius); padding: 20px; }
.point h3 { color: var(--gold); font-size: 22px; }
.point p { margin: 0; }
.site-footer { background: var(--ink); color: #CFD5DF; text-align: center; padding: 24px 16px; font-size: 14px; }

/* ---------- Activity pages ---------- */
.stage { max-width: 820px; margin: 0 auto; padding: 24px 16px 56px; }
.panel { background: #fff; border-radius: 24px; box-shadow: var(--shadow); padding: clamp(20px, 4vw, 36px); }
.center { text-align: center; }
.big-icon { display: block; font-size: 72px; line-height: 1; margin-bottom: 8px; }
.panel h1 { font-size: clamp(30px, 5vw, 44px); }
.muted { color: var(--ink-soft); }
.meta-row { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; margin: 4px 0 12px; }
.meta-row .tag { --accent: var(--gold); font-size: 14px; padding: 4px 12px; }
.pick-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px; margin: 20px 0; }
.pick {
  border: 3px solid var(--line); border-radius: 18px; background: #fff;
  padding: 16px; text-align: left; cursor: pointer;
}
.pick strong { display: block; font-family: var(--font-head); font-size: 20px; }
.pick span { display: block; color: var(--ink-soft); font-size: 15px; }
.pick .stars { font-size: 16px; margin-top: 4px; }
.pick.is-on { border-color: var(--green); background: #EFFAF2; }
.progress { height: 12px; background: #F1EAD7; border-radius: 999px; overflow: hidden; margin: 8px 0 20px; }
.progress span { display: block; height: 100%; border-radius: inherit; background: linear-gradient(90deg, var(--green), #3DD06F); transition: width .3s; }
.hud { display: flex; justify-content: space-between; gap: 12px; font-weight: 800; color: var(--ink-soft); font-size: 15px; }
.feedback { min-height: 28px; margin-top: 14px; font-weight: 800; }
.feedback.good { color: var(--green-dark); }
.feedback.bad { color: #C8372A; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; margin-top: 24px; }
.result-stars { font-size: 64px; line-height: 1; letter-spacing: 6px; color: var(--star); margin: 8px 0; }
.score-big { font-family: var(--font-head); font-size: 48px; font-weight: 800; line-height: 1; }
.shake { animation: shake .35s; }
@keyframes shake { 25% { transform: translateX(-6px); } 75% { transform: translateX(6px); } }
.pop { animation: pop .35s; }
@keyframes pop { 50% { transform: scale(1.06); } }

/* ---------- Quiz ---------- */
.q-row { display: flex; gap: 12px; align-items: flex-start; justify-content: space-between; }
.q-text { font-size: clamp(22px, 4vw, 30px); }
.passage {
  margin: 0 0 18px; padding: 16px 18px;
  background: #FFF6D6; border-left: 6px solid var(--gold); border-radius: 12px;
}
.options { display: grid; gap: 12px; margin-top: 12px; }
@media (min-width: 620px) { .options { grid-template-columns: 1fr 1fr; } }
.option {
  display: flex; align-items: center; gap: 12px; min-height: 64px;
  text-align: left; cursor: pointer;
  border: 3px solid var(--line); background: #fff; border-radius: 16px;
  padding: 12px 16px; font-size: 19px; font-weight: 700;
}
.option:hover:not(:disabled) { border-color: var(--sky); background: #F2FAFE; }
.option:disabled { cursor: default; }
.opt-letter {
  flex: none; width: 34px; height: 34px; border-radius: 50%;
  display: grid; place-items: center;
  background: #F1EAD7; font-family: var(--font-head); font-weight: 800;
}
.option.is-picked { border-color: var(--sky); background: #E6F5FD; }
.option.is-picked .opt-letter { background: var(--sky); color: #fff; }
.option.is-right { border-color: var(--green); background: #E7F8EC; }
.option.is-right .opt-letter { background: var(--green); color: #fff; }
.option.is-wrong { border-color: var(--coral); background: #FFEDEA; }
.option.is-wrong .opt-letter { background: var(--coral); color: #fff; }
.explain { font-weight: 600; color: var(--ink-soft); }
.q-actions { display: flex; justify-content: flex-end; margin-top: 12px; }
.review { display: grid; gap: 12px; margin-top: 24px; text-align: left; }
.review h2 { font-size: 24px; margin: 0; }
.review-item { border: 2px solid var(--line); border-radius: 14px; padding: 14px 16px; }
.review-item.ok { border-color: #BFE8CB; background: #F6FCF8; }
.review-item.no { border-color: #FFC9C0; background: #FFF8F6; }
.review-item p { margin: 4px 0 0; }

/* ---------- Market Math ---------- */
.stall { overflow: hidden; padding-top: 0; }
.awning {
  height: 26px; margin: 0 calc(-1 * clamp(20px, 4vw, 36px)) 16px;
  background: repeating-linear-gradient(90deg, var(--green) 0 44px, var(--gold) 44px 88px);
  -webkit-mask: radial-gradient(circle 13px at 22px 26px, transparent 98%, #000) 0 0 / 44px 100%;
          mask: radial-gradient(circle 13px at 22px 26px, transparent 98%, #000) 0 0 / 44px 100%;
}
.customer { display: flex; gap: 12px; align-items: center; margin-top: 8px; }
.customer-face { font-size: 52px; line-height: 1; }
.bubble { flex: 1; background: #FFFCF3; border: 3px solid var(--line); border-radius: 18px; padding: 10px 14px; font-weight: 700; }
.item-card { display: flex; align-items: center; justify-content: center; gap: 18px; margin: 18px 0 8px; }
.item-emoji { font-size: 76px; line-height: 1; }
.item-name { font-weight: 800; font-size: 18px; }
.item-name::first-letter { text-transform: uppercase; }
@media (max-width: 520px) {
  .customer-face { font-size: 40px; }
  .bubble { font-size: 15px; padding: 8px 12px; }
  .item-card { margin: 12px 0 4px; gap: 12px; }
  .item-emoji { font-size: 56px; }
  .price-tag { font-size: 28px; }
  .task { font-size: 18px; margin: 8px 0; }
  .tray { min-height: 80px; }
  .drawer { gap: 8px; padding: 12px 8px; margin-top: 10px; }
  .note { width: 82px; height: 46px; font-size: 17px; }
}
.price-tag {
  display: inline-block; margin-top: 4px;
  background: var(--gold); box-shadow: 0 4px 0 var(--gold-dark);
  font-family: var(--font-head); font-weight: 800; font-size: 34px;
  padding: 2px 18px; border-radius: 12px; transform: rotate(-4deg);
}
.paid-with { display: flex; align-items: center; justify-content: center; gap: 10px; font-weight: 800; margin: 8px 0; }
.task { text-align: center; font-size: 20px; font-weight: 800; margin: 12px 0; }
.tray {
  min-height: 104px; padding: 12px;
  display: flex; flex-wrap: wrap; gap: 6px; align-items: center; justify-content: center;
  border: 3px dashed var(--line); border-radius: 18px; background: #FFFCF3;
}
.tray-empty { color: var(--ink-soft); font-weight: 700; }
.total-line { text-align: center; font-weight: 800; margin: 10px 0 0; min-height: 26px; }
.btn-row { display: flex; justify-content: center; gap: 12px; margin-top: 12px; }
.drawer {
  display: flex; flex-wrap: wrap; gap: 10px; align-items: center; justify-content: center;
  margin-top: 18px; padding: 16px; border-radius: 18px; background: #F4EBD3;
}
.money {
  border: 0; cursor: pointer; padding: 0;
  display: inline-grid; place-items: center;
  font-family: var(--font-head); font-weight: 800;
  box-shadow: 0 3px 0 rgba(0, 0, 0, .22);
  transition: transform .08s;
}
.money:active { transform: translateY(2px); }
.coin { border-radius: 50%; color: #3B2F12; }
.coin.d1 { width: 46px; height: 46px; font-size: 15px; background: radial-gradient(circle at 35% 30%, #FFFFFF, #BFC5CE); }
.coin.d5 { width: 52px; height: 52px; font-size: 16px; background: radial-gradient(circle at 35% 30%, #FBE3C8, #C98A4B); }
.coin.d10 { width: 56px; height: 56px; font-size: 17px; background: radial-gradient(circle at 35% 30%, #F7D9B5, #B87333); }
.coin.d20 { width: 62px; height: 62px; font-size: 17px; background: radial-gradient(circle at 35% 30%, #FFF4B0, #D4AF37); border: 5px solid #C9CED6; }
.note { width: 92px; height: 50px; border-radius: 8px; color: #fff; font-size: 19px; border: 3px solid rgba(255, 255, 255, .45); text-shadow: 0 1px 2px rgba(0, 0, 0, .35); }
.note.d50 { background: linear-gradient(135deg, #2E8B57, #1D6B40); }
.note.d100 { background: linear-gradient(135deg, #C2185B, #8E1043); }
.note.d500 { background: linear-gradient(135deg, #7B1FA2, #4A148C); }
.note.d1000 { background: linear-gradient(135deg, #1565C0, #0D3C78); }
.tray .money, .paid-with .money, .feedback .money { transform: scale(.82); margin: -4px; }
.feedback .money { cursor: default; }

/* ---------- Memory match ---------- */
.mem-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin-top: 12px; }
@media (max-width: 520px) { .mem-grid { grid-template-columns: repeat(3, 1fr); gap: 8px; } }
.mem-card { display: block; width: 100%; aspect-ratio: 1; perspective: 800px; border: 0; background: none; padding: 0; cursor: pointer; }
.mem-inner { display: block; position: relative; width: 100%; height: 100%; transition: transform .45s; transform-style: preserve-3d; }
.mem-card.is-up .mem-inner, .mem-card.is-done .mem-inner { transform: rotateY(180deg); }
.mem-face {
  position: absolute; inset: 0; border-radius: 14px;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 4px;
  padding: 8px; text-align: center; font-weight: 800;
  backface-visibility: hidden; -webkit-backface-visibility: hidden;
  box-shadow: 0 3px 0 rgba(0, 0, 0, .12);
}
.mem-back {
  background: repeating-linear-gradient(45deg, var(--green) 0 14px, #00A843 14px 28px);
  color: var(--gold); font-family: var(--font-head); font-size: 36px;
}
.mem-front { background: #fff; border: 3px solid var(--line); transform: rotateY(180deg); font-size: clamp(13px, 2.6vw, 17px); line-height: 1.2; }
.mem-front.kind-q { background: #FFF6D6; }
.mem-emoji { font-size: clamp(24px, 6vw, 38px); line-height: 1; }
.mem-card.is-done .mem-front { border-color: var(--green); background: #E7F8EC; }
.fact-box { margin-top: 16px; min-height: 56px; padding: 12px 16px; border-radius: 14px; background: #FFF6D6; font-weight: 700; }
.fact-box:empty { background: transparent; }
.toggle { display: inline-flex; align-items: center; gap: 8px; font-weight: 800; cursor: pointer; }
.toggle input { width: 20px; height: 20px; accent-color: var(--green); }

/* ---------- Worksheet maker ---------- */
.ws-layout { max-width: 1000px; margin: 0 auto; padding: 24px 16px 56px; display: grid; gap: 20px; }
.ws-intro h1 { font-size: clamp(28px, 5vw, 40px); margin-bottom: .2em; }
.ws-intro p { margin: 0; color: var(--ink-soft); }
.ws-controls {
  display: flex; flex-wrap: wrap; gap: 12px 16px; align-items: flex-end;
  background: #fff; padding: 16px; border-radius: 18px; box-shadow: var(--shadow);
}
.field { display: grid; gap: 4px; font-weight: 800; font-size: 14px; }
.field select {
  font: inherit; font-weight: 700; min-width: 130px;
  padding: 10px 12px; border-radius: 12px; border: 2px solid var(--line); background: #fff;
}
.ws-controls .spacer { flex: 1; }
.sheet {
  width: 100%; max-width: 800px; margin: 0 auto; padding: 40px 44px;
  background: #fff; color: #111; border-radius: 6px; box-shadow: var(--shadow);
}
.sheet-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 16px; border-bottom: 3px solid #111; padding-bottom: 10px; }
.sheet-title { font-family: var(--font-head); font-size: 26px; margin: 0; line-height: 1.1; }
.sheet-sub { font-weight: 700; color: #444; }
.sheet-brand { font-family: var(--font-head); font-weight: 800; color: var(--green); font-size: 20px; white-space: nowrap; }
.sheet-fields { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 12px 20px; margin: 16px 0 6px; font-size: 14px; font-weight: 700; }
.sheet-fields span { border-bottom: 1.5px solid #111; padding-top: 14px; }
.sheet-instr { font-weight: 700; margin: 10px 0 0; }
.problems { display: grid; grid-template-columns: repeat(5, 1fr); gap: 30px 16px; margin-top: 22px; }
.problems.wide { grid-template-columns: repeat(3, 1fr); }
.prob { display: flex; gap: 6px; align-items: flex-start; font-family: ui-monospace, 'Courier New', monospace; font-size: 20px; break-inside: avoid; }
.prob-n { font-family: var(--font-body); font-size: 12px; font-weight: 800; color: #666; padding-top: 4px; min-width: 22px; }
.vert { display: inline-grid; justify-items: end; }
.vert .line2 { justify-self: stretch; display: flex; justify-content: space-between; gap: .6em; border-bottom: 2px solid #111; }
.vert .ans-space { height: 32px; }
.horiz { white-space: nowrap; }
.sheet-foot { margin-top: 28px; font-size: 12px; color: #777; display: flex; justify-content: space-between; gap: 12px; }
.key-list { display: grid; grid-template-columns: repeat(5, 1fr); gap: 8px 16px; margin: 16px 0 0; padding: 0; list-style: none; font-size: 15px; }
.key-list b { color: #666; font-size: 12px; margin-right: 4px; }
@media (max-width: 640px) {
  .sheet { padding: 20px 16px; }
  .sheet-fields { grid-template-columns: 1fr; }
  .problems { grid-template-columns: repeat(3, 1fr); gap: 24px 10px; }
  .problems.wide { grid-template-columns: 1fr 1fr; }
  .prob { font-size: 17px; }
  .key-list { grid-template-columns: repeat(3, 1fr); }
}
@media print {
  body { background: #fff; }
  .site-header, .flag-strip, .ws-intro, .ws-controls, .site-footer { display: none !important; }
  .ws-layout { padding: 0; max-width: none; display: block; }
  .sheet { box-shadow: none; padding: 0; max-width: none; border-radius: 0; }
  .problems { grid-template-columns: repeat(5, 1fr) !important; }
  .problems.wide { grid-template-columns: repeat(3, 1fr) !important; }
  .key-list { grid-template-columns: repeat(5, 1fr) !important; }
  .answer-key { break-before: page; margin-top: 0; }
  @page { margin: 14mm; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}