/* Matematik Atölyesi — touch-first, dependency-free interface */

:root {
  --navy: #101c3a;
  --navy-2: #18284d;
  --navy-3: #26385f;
  --cream: #f5f0e5;
  --paper: #fffaf0;
  --white: #ffffff;
  --ink-soft: #536078;
  --line: #c9c4b8;
  --coral: #f16b5d;
  --coral-dark: #ce4d42;
  --yellow: #f4c84a;
  --yellow-soft: #ffe69a;
  --teal: #36bca6;
  --teal-dark: #168f80;
  --blue: #4c82e9;
  --blue-dark: #2b5db9;
  --green: #147a49;
  --red: #b8323c;
  --grade-5: var(--coral);
  --grade-6: var(--yellow);
  --grade-7: var(--teal);
  --grade-8: var(--blue);
  --accent: var(--coral);
  --accent-ink: var(--navy);
  --shadow-sm: 3px 3px 0 rgba(16, 28, 58, 0.16);
  --shadow-md: 7px 7px 0 rgba(16, 28, 58, 0.18);
  --shadow-lg: 12px 12px 0 rgba(16, 28, 58, 0.2);
  --radius-sm: 10px;
  --radius-md: 18px;
  --radius-lg: 28px;
  --radius-xl: 38px;
  --header-height: 90px;
  --content-max: 1500px;
  --touch: 52px;
  --ease-out: cubic-bezier(.2, .8, .2, 1);
  --font-sans: "Avenir Next", "Segoe UI", "Trebuchet MS", Arial, sans-serif;
  --font-display: "Arial Rounded MT Bold", "Avenir Next", "Segoe UI", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  scroll-behavior: smooth;
  text-size-adjust: 100%;
  -webkit-text-size-adjust: 100%;
}

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  overflow-x: hidden;
  color: var(--navy);
  background-color: var(--cream);
  background-image:
    linear-gradient(rgba(16, 28, 58, .035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(16, 28, 58, .035) 1px, transparent 1px);
  background-size: 34px 34px;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

body[data-active-grade="5"] { --accent: var(--grade-5); }
body[data-active-grade="6"] { --accent: var(--grade-6); }
body[data-active-grade="7"] { --accent: var(--grade-7); }
body[data-active-grade="8"] { --accent: var(--grade-8); }

body.is-locked,
body.modal-open,
body.drawer-open,
body.game-open {
  overflow: hidden;
}

[hidden] {
  display: none !important;
}

button,
input,
select,
textarea {
  margin: 0;
  color: inherit;
  font: inherit;
}

button,
select,
label,
[role="button"] {
  -webkit-tap-highlight-color: transparent;
}

button {
  border: 0;
  cursor: pointer;
  touch-action: manipulation;
}

button:disabled,
[aria-disabled="true"] {
  cursor: not-allowed;
  opacity: .52;
}

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

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

h1,
h2,
h3,
p,
dl,
dd {
  margin-top: 0;
}

h1,
h2,
h3,
strong {
  text-wrap: balance;
}

:focus-visible {
  outline: 4px solid var(--yellow);
  outline-offset: 3px;
}

::selection {
  color: var(--navy);
  background: var(--yellow);
}

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

.skip-link {
  position: fixed;
  z-index: 10000;
  top: 12px;
  left: 12px;
  min-height: 48px;
  padding: 12px 18px;
  color: var(--navy);
  background: var(--yellow);
  border: 3px solid var(--navy);
  border-radius: var(--radius-sm);
  font-weight: 800;
  transform: translateY(-160%);
  transition: transform .2s ease;
}

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

.app-shell {
  position: relative;
  min-height: 100vh;
}

.main-content {
  min-height: calc(100vh - var(--header-height));
}

.view {
  animation: view-in .42s var(--ease-out) both;
}

.view[hidden],
.view:not(.is-active) {
  display: none;
}

@keyframes view-in {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.noscript-banner {
  padding: 14px 24px;
  color: var(--paper);
  background: var(--red);
  text-align: center;
  font-weight: 800;
}

/* Header and grade navigation */

.topbar {
  position: sticky;
  z-index: 100;
  top: 0;
  display: grid;
  grid-template-columns: minmax(205px, auto) minmax(455px, 1fr) auto;
  align-items: center;
  min-height: var(--header-height);
  padding: 10px clamp(16px, 2.2vw, 38px);
  color: var(--paper);
  background: var(--navy);
  border-bottom: 5px solid var(--accent);
  box-shadow: 0 4px 0 rgba(16, 28, 58, .14);
  transition: border-color .3s ease;
}

.brand {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  min-height: 64px;
  gap: 12px;
  border-radius: 14px;
}

.brand__mark {
  position: relative;
  display: grid;
  width: 56px;
  height: 56px;
  place-items: center;
  flex: 0 0 auto;
  color: var(--navy);
  background: var(--yellow);
  border: 3px solid var(--paper);
  border-radius: 16px 8px 16px 8px;
  box-shadow: 4px 4px 0 var(--coral);
  transform: rotate(-3deg);
}

.brand__pi {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 38px;
  font-weight: 900;
  line-height: 1;
  transform: translateY(-2px);
}

.brand__spark {
  position: absolute;
  width: 7px;
  height: 7px;
  background: var(--paper);
  transform: rotate(45deg);
}

.brand__spark--one { top: -7px; right: -8px; }
.brand__spark--two { bottom: 0; left: -9px; width: 5px; height: 5px; }

.brand__copy {
  display: flex;
  flex-direction: column;
  line-height: .95;
}

.brand__copy strong {
  font-family: var(--font-display);
  font-size: clamp(17px, 1.4vw, 22px);
  letter-spacing: -.04em;
}

.brand__copy span {
  margin-top: 5px;
  color: var(--yellow);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: .17em;
  text-transform: uppercase;
}

.grade-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-width: 0;
}

.grade-tab {
  position: relative;
  display: grid;
  grid-template-columns: auto auto;
  align-items: baseline;
  justify-content: center;
  min-width: 76px;
  min-height: 54px;
  padding: 7px 14px;
  gap: 5px;
  color: var(--paper);
  background: transparent;
  border: 2px solid rgba(255, 250, 240, .22);
  border-radius: 16px;
  font-weight: 800;
  transition: color .18s ease, background .18s ease, border-color .18s ease, transform .18s ease;
}

.grade-tab::after {
  content: "";
  position: absolute;
  right: 9px;
  bottom: -5px;
  left: 9px;
  height: 5px;
  background: var(--tab-color, var(--yellow));
  border-radius: 5px;
  opacity: 0;
  transform: scaleX(.35);
  transition: opacity .18s ease, transform .18s ease;
}

.grade-tab--5 { --tab-color: var(--grade-5); }
.grade-tab--6 { --tab-color: var(--grade-6); }
.grade-tab--7 { --tab-color: var(--grade-7); }
.grade-tab--8 { --tab-color: var(--grade-8); }
.grade-tab--mixed { --tab-color: var(--yellow); min-width: 104px; }

.grade-tab__number {
  font-family: var(--font-display);
  font-size: 25px;
  line-height: 1;
}

.grade-tab__label,
.grade-tab__mixed-label {
  font-size: 12px;
  letter-spacing: .03em;
}

.grade-tab__mixed-icon {
  color: var(--yellow);
  font-size: 18px;
}

.grade-tab:hover,
.grade-tab.is-active,
.grade-tab[aria-pressed="true"] {
  color: var(--navy);
  background: var(--tab-color);
  border-color: var(--tab-color);
  transform: translateY(-1px);
}

.grade-tab.is-active::after,
.grade-tab[aria-pressed="true"]::after {
  opacity: 1;
  transform: scaleX(1);
}

.grade-tab--mixed:hover .grade-tab__mixed-icon,
.grade-tab--mixed.is-active .grade-tab__mixed-icon,
.grade-tab--mixed[aria-pressed="true"] .grade-tab__mixed-icon {
  color: var(--navy);
}

.topbar__actions {
  display: flex;
  justify-content: flex-end;
  gap: 6px;
}

.icon-button {
  display: grid;
  grid-template-rows: 22px auto;
  place-items: center;
  min-width: 58px;
  min-height: 58px;
  padding: 7px 8px 5px;
  color: var(--paper);
  background: transparent;
  border: 2px solid transparent;
  border-radius: 14px;
  transition: background .18s ease, border-color .18s ease;
}

.icon-button:hover,
.icon-button[aria-pressed="false"],
.icon-button[aria-expanded="true"] {
  background: var(--navy-2);
  border-color: var(--navy-3);
}

.icon-button__label {
  font-size: 10px;
  font-weight: 800;
}

.icon {
  position: relative;
  display: inline-block;
  width: 22px;
  height: 22px;
}

.icon--sound::before {
  content: "";
  position: absolute;
  top: 6px;
  left: 1px;
  width: 7px;
  height: 10px;
  background: currentColor;
  clip-path: polygon(0 30%, 42% 30%, 100% 0, 100% 100%, 42% 70%, 0 70%);
}

.icon--sound::after {
  content: "))";
  position: absolute;
  top: -2px;
  left: 10px;
  font-family: Arial, sans-serif;
  font-size: 17px;
  font-weight: 900;
  letter-spacing: -6px;
}

[aria-pressed="false"] > .icon--sound::after,
.is-muted > .icon--sound::after {
  content: "×";
  top: 0;
  left: 11px;
  letter-spacing: 0;
}

.icon--fullscreen::before,
.icon--fullscreen::after {
  content: "";
  position: absolute;
  inset: 2px;
  border: 3px solid currentColor;
}

.icon--fullscreen::before { clip-path: polygon(0 0, 42% 0, 42% 16%, 16% 16%, 16% 42%, 0 42%); }
.icon--fullscreen::after { clip-path: polygon(58% 58%, 100% 58%, 100% 100%, 58% 100%, 58% 84%, 84% 84%, 84% 58%); }

.icon--sliders::before {
  content: "";
  position: absolute;
  inset: 3px 1px;
  background:
    linear-gradient(currentColor, currentColor) 0 2px / 20px 2px no-repeat,
    linear-gradient(currentColor, currentColor) 0 8px / 20px 2px no-repeat,
    linear-gradient(currentColor, currentColor) 0 14px / 20px 2px no-repeat;
}

.icon--sliders::after {
  content: "● ● ●";
  position: absolute;
  top: -7px;
  left: 2px;
  width: 18px;
  font-size: 8px;
  line-height: 6px;
  letter-spacing: 1px;
  word-spacing: 5px;
  transform: rotate(90deg);
}

/* Shared buttons and headings */

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: var(--touch);
  padding: 12px 20px;
  gap: 10px;
  color: var(--navy);
  background: var(--paper);
  border: 3px solid var(--navy);
  border-radius: 14px;
  box-shadow: 4px 4px 0 var(--navy);
  font-weight: 900;
  line-height: 1.15;
  transition: transform .16s ease, box-shadow .16s ease, background .16s ease;
}

.button:hover { transform: translate(-1px, -1px); box-shadow: 6px 6px 0 var(--navy); }
.button:active { transform: translate(3px, 3px); box-shadow: 1px 1px 0 var(--navy); }
.button--large { min-height: 60px; padding: 14px 24px; font-size: 17px; }
.button--primary { background: var(--coral); }
.button--paper { background: var(--paper); }
.button--navy { color: var(--paper); background: var(--navy); border-color: var(--navy); box-shadow: 4px 4px 0 rgba(16, 28, 58, .3); }
.button--navy:hover { box-shadow: 6px 6px 0 rgba(16, 28, 58, .3); }
.button--ghost { background: transparent; box-shadow: none; }
.button--ghost:hover { background: rgba(16, 28, 58, .06); box-shadow: none; transform: none; }
.button__arrow { font-size: 25px; line-height: .7; transition: transform .18s ease; }
.button:hover .button__arrow { transform: translateX(4px); }
.button__dice { font-size: 24px; }

.text-button {
  min-height: 50px;
  padding: 10px 2px;
  color: var(--navy);
  background: transparent;
  border-bottom: 3px solid var(--coral);
  font-weight: 900;
}

.text-button span { display: inline-block; margin-left: 7px; font-size: 22px; transition: transform .18s ease; }
.text-button:hover span { transform: translateX(5px); }

.section-kicker,
.eyebrow {
  margin-bottom: 8px;
  color: var(--coral-dark);
  font-size: 12px;
  font-weight: 950;
  letter-spacing: .15em;
  text-transform: uppercase;
}

.section-heading h2 {
  margin-bottom: 0;
  font-family: var(--font-display);
  font-size: clamp(29px, 3vw, 48px);
  line-height: 1.08;
  letter-spacing: -.045em;
}

.section-heading--center {
  max-width: 780px;
  margin: 0 auto clamp(24px, 3vw, 42px);
  text-align: center;
}

.section-heading--row {
  display: flex;
  align-items: end;
  justify-content: space-between;
  margin-bottom: clamp(22px, 3vw, 38px);
  gap: 24px;
}

/* Home hero */

.hero-wrap {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: clamp(18px, 2.2vw, 36px) clamp(14px, 2.5vw, 42px) 0;
}

.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.04fr) minmax(410px, .96fr);
  min-height: min(580px, calc(100vh - 210px));
  overflow: hidden;
  color: var(--paper);
  background: var(--navy);
  border: 4px solid var(--navy);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 250, 240, .045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 250, 240, .045) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(90deg, black, transparent 72%);
}

.hero__copy {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(38px, 5vw, 84px);
}

.hero .eyebrow {
  width: fit-content;
  margin-bottom: 18px;
  color: var(--yellow);
}

.hero .eyebrow span {
  display: inline-block;
  margin-right: 7px;
  color: var(--coral);
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  50% { transform: scale(1.35); }
}

.hero h1 {
  margin-bottom: 24px;
  font-family: var(--font-display);
  font-size: clamp(48px, 6.1vw, 94px);
  line-height: .92;
  letter-spacing: -.07em;
}

.hero__scribble {
  position: relative;
  z-index: 0;
  display: inline-block;
  color: var(--yellow);
}

.hero__scribble::after {
  content: "";
  position: absolute;
  z-index: -1;
  right: -2%;
  bottom: -7px;
  left: 1%;
  height: 13px;
  border-top: 5px solid var(--coral);
  border-radius: 50%;
  transform: rotate(-1deg);
}

.hero__description {
  max-width: 620px;
  margin-bottom: 30px;
  color: #d9deea;
  font-size: clamp(17px, 1.55vw, 23px);
  line-height: 1.45;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.hero__playground {
  position: relative;
  display: grid;
  min-width: 0;
  place-items: center;
  padding: clamp(35px, 5vw, 76px);
  background: var(--teal);
  border-left: 4px solid var(--navy);
  clip-path: polygon(8% 0, 100% 0, 100% 100%, 0 100%);
}

.hero__playground::before,
.hero__playground::after {
  content: "";
  position: absolute;
  pointer-events: none;
}

.hero__playground::before {
  top: 8%;
  right: 8%;
  width: 84px;
  height: 84px;
  border: 6px solid rgba(16, 28, 58, .22);
  border-radius: 50%;
}

.hero__playground::after {
  right: -55px;
  bottom: -55px;
  width: 170px;
  height: 170px;
  background: var(--yellow);
  border: 4px solid var(--navy);
  border-radius: 50%;
}

.hero-board {
  position: relative;
  z-index: 2;
  width: min(100%, 510px);
  padding: clamp(22px, 3vw, 38px);
  color: var(--navy);
  background: var(--paper);
  border: 4px solid var(--navy);
  border-radius: 22px;
  box-shadow: 13px 13px 0 rgba(16, 28, 58, .26);
  transform: rotate(1.6deg);
  animation: board-float 5s ease-in-out infinite;
}

@keyframes board-float {
  50% { transform: rotate(-.2deg) translateY(-8px); }
}

.hero-board__top,
.hero-board__score {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-size: 11px;
  font-weight: 950;
  letter-spacing: .12em;
}

.hero-board__top {
  padding-bottom: 15px;
  border-bottom: 3px solid var(--navy);
}

.hero-board__stars { color: var(--coral); letter-spacing: .25em; }

.hero-board__equation {
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 34px 0 26px;
  gap: clamp(8px, 1.2vw, 17px);
}

.equation-tile {
  display: grid;
  min-width: clamp(58px, 6.5vw, 88px);
  height: clamp(64px, 7vw, 94px);
  place-items: center;
  border: 3px solid var(--navy);
  border-radius: 16px;
  box-shadow: 4px 4px 0 var(--navy);
  font-family: var(--font-display);
  font-size: clamp(28px, 3.5vw, 48px);
}

.equation-tile--coral { background: var(--coral); transform: rotate(-4deg); }
.equation-tile--yellow { background: var(--yellow); transform: rotate(3deg); }
.equation-tile--teal { background: #7ed9c9; transform: rotate(-2deg); }
.equation-sign { font-family: Georgia, serif; font-size: clamp(27px, 3vw, 43px); font-weight: 900; }

.hero-board__answers {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.hero-board__answers span {
  display: grid;
  min-height: 50px;
  place-items: center;
  background: var(--cream);
  border: 2px solid var(--navy);
  border-radius: 10px;
  font-weight: 900;
}

.hero-board__answers .is-correct { color: var(--paper); background: var(--green); }

.hero-board__score {
  margin-top: 23px;
  padding: 13px 15px;
  color: var(--paper);
  background: var(--navy);
  border-radius: 10px;
  letter-spacing: 0;
}

.hero-board__score strong { color: var(--yellow); font-size: 20px; }

.doodle {
  position: absolute;
  z-index: 3;
  display: grid;
  place-items: center;
  color: var(--navy);
  font-family: Georgia, serif;
  font-weight: 900;
}

.doodle--triangle {
  top: 10%;
  left: 13%;
  width: 42px;
  height: 38px;
  border-right: 4px solid var(--navy);
  border-bottom: 4px solid var(--navy);
  transform: skew(-25deg) rotate(24deg);
}

.doodle--orbit { top: 13%; right: 9%; width: 66px; height: 66px; font-size: 25px; border: 4px solid var(--navy); border-radius: 50%; }
.doodle--fraction { right: 7%; bottom: 18%; color: var(--coral); font-size: 34px; transform: rotate(10deg); }
.doodle--plus { bottom: 10%; left: 8%; color: var(--yellow); font-size: 50px; transform: rotate(8deg); }

.hero-stats {
  position: relative;
  z-index: 3;
  display: grid;
  grid-template-columns: repeat(3, minmax(130px, 1fr)) minmax(260px, 1.4fr);
  max-width: calc(100% - clamp(30px, 5vw, 80px));
  margin: -18px auto 0;
  color: var(--navy);
  background: var(--paper);
  border: 3px solid var(--navy);
  border-radius: 18px;
  box-shadow: var(--shadow-md);
}

.hero-stat {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  min-height: 88px;
  padding: 14px clamp(14px, 2vw, 28px);
  gap: 12px;
  border-right: 2px dashed rgba(16, 28, 58, .25);
}

.hero-stat:last-child { border-right: 0; }
.hero-stat dt { margin: 0; font-family: var(--font-display); font-size: clamp(28px, 3vw, 44px); line-height: 1; }
.hero-stat dd { margin: 0; color: var(--ink-soft); font-size: 13px; font-weight: 800; line-height: 1.25; }
.hero-stat--note { background: var(--yellow-soft); border-radius: 0 15px 15px 0; }
.hero-stat--note dt { color: var(--coral-dark); }
.hero-stat--note dd { color: var(--navy); font-size: 14px; }

/* Home sections */

.home-section {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: clamp(72px, 8vw, 120px) clamp(18px, 3.2vw, 52px) 0;
}

.mode-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(16px, 2.2vw, 32px);
}

.mode-card {
  position: relative;
  display: grid;
  grid-template-columns: 88px 1fr auto;
  align-items: center;
  min-height: 196px;
  padding: clamp(20px, 2.4vw, 34px);
  gap: 22px;
  overflow: hidden;
  color: var(--navy);
  background: var(--paper);
  border: 3px solid var(--navy);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  text-align: left;
  transition: transform .22s var(--ease-out), box-shadow .22s var(--ease-out);
}

.mode-card:hover { transform: translateY(-7px) rotate(-.3deg); box-shadow: 10px 13px 0 rgba(16, 28, 58, .19); }
.mode-card:active { transform: translate(4px, 4px); box-shadow: 2px 2px 0 rgba(16, 28, 58, .2); }
.mode-card::after { content: ""; position: absolute; right: -35px; bottom: -55px; width: 120px; height: 120px; border: 18px solid rgba(16, 28, 58, .08); border-radius: 50%; }
.mode-card--solo { border-top: 10px solid var(--coral); }
.mode-card--duel { border-top: 10px solid var(--yellow); }
.mode-card--teams { border-top: 10px solid var(--blue); }
.mode-card--class { border-top: 10px solid var(--teal); }

.mode-card__number {
  position: absolute;
  top: 12px;
  right: 18px;
  color: rgba(16, 28, 58, .18);
  font-family: var(--font-display);
  font-size: 18px;
}

.mode-card__icon {
  display: grid;
  width: 82px;
  height: 82px;
  place-items: center;
  background: var(--coral);
  border: 3px solid var(--navy);
  border-radius: 50%;
  box-shadow: 4px 4px 0 var(--navy);
  font-family: var(--font-display);
  font-size: 48px;
  line-height: 1;
}

.mode-card--duel .mode-card__icon { background: var(--yellow); }
.mode-card--teams .mode-card__icon { background: var(--blue); }
.mode-card--class .mode-card__icon { background: var(--teal); }
.mode-card__icon--versus { grid-template-columns: auto auto auto; padding: 8px; font-size: 13px; }
.mode-card__icon--versus i { font-style: normal; font-size: 20px; }
.mode-card__icon--versus b { display: grid; width: 28px; height: 28px; place-items: center; color: var(--paper); background: var(--navy); border-radius: 50%; font-size: 9px; }
.mode-card__icon--team { font-size: 21px; letter-spacing: -4px; }

.mode-card__copy { display: flex; min-width: 0; flex-direction: column; gap: 8px; }
.mode-card__copy strong { font-family: var(--font-display); font-size: clamp(21px, 2vw, 30px); letter-spacing: -.035em; }
.mode-card__copy small { color: var(--ink-soft); font-size: 14px; line-height: 1.45; }
.mode-card__arrow { position: relative; z-index: 2; display: grid; width: 42px; height: 42px; place-items: center; color: var(--paper); background: var(--navy); border-radius: 50%; font-size: 24px; transition: transform .2s ease; }
.mode-card:hover .mode-card__arrow { transform: rotate(45deg); }

.home-section--featured { padding-top: clamp(80px, 9vw, 140px); }

.home-section--curriculum { padding-bottom: clamp(70px, 8vw, 120px); }

.curriculum-callout {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  min-height: 240px;
  padding: clamp(28px, 4vw, 56px);
  gap: clamp(24px, 4vw, 58px);
  overflow: hidden;
  background: var(--yellow);
  border: 4px solid var(--navy);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
}

.curriculum-callout::after {
  content: "∑  △  %";
  position: absolute;
  right: 3%;
  bottom: -30px;
  color: rgba(16, 28, 58, .08);
  font-family: Georgia, serif;
  font-size: 110px;
  font-weight: 900;
  letter-spacing: .15em;
  pointer-events: none;
}

.curriculum-callout__stamp {
  position: relative;
  z-index: 1;
  display: grid;
  width: 118px;
  height: 118px;
  place-items: center;
  padding: 16px;
  color: var(--paper);
  background: var(--coral);
  border: 4px solid var(--navy);
  border-radius: 50%;
  box-shadow: 6px 6px 0 var(--navy);
  text-align: center;
  font-size: 14px;
  font-weight: 900;
  line-height: 1.1;
  transform: rotate(-8deg);
}

.curriculum-callout__stamp strong { display: block; font-family: var(--font-display); font-size: 28px; }
.curriculum-callout__copy { position: relative; z-index: 1; max-width: 760px; }
.curriculum-callout__copy .section-kicker { color: var(--navy); }
.curriculum-callout__copy h2 { margin-bottom: 12px; font-family: var(--font-display); font-size: clamp(28px, 3.3vw, 50px); line-height: 1.06; letter-spacing: -.045em; }
.curriculum-callout__copy p:last-child { max-width: 680px; margin-bottom: 0; font-size: 16px; font-weight: 650; }
.curriculum-callout .button { position: relative; z-index: 2; white-space: nowrap; }

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 86px;
  padding: 20px clamp(22px, 4vw, 64px);
  color: #bac3d7;
  background: var(--navy);
  border-top: 5px solid var(--teal);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.site-footer p { margin: 0; }
.site-footer span { margin-right: 8px; color: var(--yellow); }

/* Catalog and filters */

.view--catalog {
  max-width: var(--content-max);
  min-height: calc(100vh - var(--header-height));
  margin: 0 auto;
  padding: clamp(28px, 4vw, 60px) clamp(18px, 3.2vw, 52px) clamp(70px, 8vw, 120px);
}

.catalog-hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  min-height: 210px;
  margin-bottom: 26px;
  padding: clamp(28px, 4vw, 54px);
  gap: 28px;
  overflow: hidden;
  color: var(--paper);
  background: var(--navy);
  border: 4px solid var(--navy);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
}

.catalog-hero::before {
  content: "×  ÷  +  =";
  position: absolute;
  top: 10px;
  right: 17%;
  color: rgba(255, 250, 240, .08);
  font-family: Georgia, serif;
  font-size: clamp(50px, 7vw, 100px);
  font-weight: 900;
  letter-spacing: .12em;
  transform: rotate(-5deg);
}

.catalog-hero > * { position: relative; z-index: 1; }

.back-button {
  display: inline-flex;
  align-items: center;
  min-height: 48px;
  margin: -12px 0 10px -12px;
  padding: 8px 12px;
  gap: 8px;
  color: #d9deea;
  background: transparent;
  border-radius: 12px;
  font-size: 13px;
  font-weight: 850;
}

.back-button:hover { color: var(--yellow); background: var(--navy-2); }
.back-button span { font-size: 23px; }
.catalog-hero .section-kicker { color: var(--yellow); }
.catalog-hero h1 { margin-bottom: 8px; font-family: var(--font-display); font-size: clamp(42px, 5.4vw, 78px); line-height: .98; letter-spacing: -.055em; }
.catalog-hero #catalogDescription { max-width: 680px; margin-bottom: 0; color: #c9d0df; font-size: clamp(15px, 1.6vw, 20px); }
.curriculum-source { display: inline-flex; min-height: 38px; align-items: center; margin-top: 13px; padding: 7px 12px; gap: 7px; color: var(--paper); background: rgba(255,255,255,.1); border: 1.5px solid rgba(255,255,255,.45); border-radius: 999px; font-size: 11px; font-weight: 850; }
.curriculum-source:hover { color: var(--navy); background: var(--yellow); border-color: var(--navy); }

.catalog-hero__badge {
  display: grid;
  width: 126px;
  height: 126px;
  place-items: center;
  align-content: center;
  color: var(--navy);
  background: var(--accent);
  border: 4px solid var(--paper);
  border-radius: 50% 43% 48% 45%;
  box-shadow: 7px 7px 0 rgba(255, 250, 240, .19);
  transform: rotate(5deg);
}

.catalog-hero__badge span { font-family: var(--font-display); font-size: 35px; line-height: 1; }
.catalog-hero__badge small { margin-top: 7px; font-size: 10px; font-weight: 950; letter-spacing: .18em; }

.catalog-toolbar {
  position: sticky;
  z-index: 30;
  top: calc(var(--header-height) + 10px);
  display: grid;
  grid-template-columns: minmax(280px, 1fr) auto;
  align-items: stretch;
  margin-bottom: 18px;
  padding: 12px;
  gap: 12px;
  background: rgba(255, 250, 240, .96);
  border: 3px solid var(--navy);
  border-radius: 20px;
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(8px);
}

.search-field {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 58px;
  background: var(--cream);
  border: 2px solid var(--navy);
  border-radius: 13px;
}

.search-field:focus-within { box-shadow: inset 0 0 0 3px var(--yellow); }
.search-field__icon { position: relative; width: 23px; height: 23px; margin: 0 13px 0 17px; flex: 0 0 auto; border: 3px solid var(--navy); border-radius: 50%; }
.search-field__icon::after { content: ""; position: absolute; right: -7px; bottom: -4px; width: 9px; height: 3px; background: var(--navy); transform: rotate(45deg); }
.search-field input { width: 100%; min-width: 0; height: 54px; padding: 8px 54px 8px 0; background: transparent; border: 0; outline: 0; font-size: 17px; font-weight: 700; }
.search-field input::placeholder { color: #7c8495; opacity: 1; }
.search-field__clear { position: absolute; top: 8px; right: 8px; display: grid; width: 42px; height: 42px; place-items: center; color: var(--navy); background: rgba(16, 28, 58, .08); border-radius: 10px; font-size: 25px; }

.filter-controls { display: flex; align-items: stretch; gap: 9px; }

.select-field {
  position: relative;
  display: grid;
  min-width: 178px;
  padding: 5px 39px 5px 13px;
  background: var(--paper);
  border: 2px solid var(--navy);
  border-radius: 13px;
}

.select-field::after {
  content: "⌄";
  position: absolute;
  top: 50%;
  right: 13px;
  font-size: 20px;
  font-weight: 900;
  pointer-events: none;
  transform: translateY(-58%);
}

.select-field span { color: var(--ink-soft); font-size: 10px; font-weight: 900; letter-spacing: .08em; text-transform: uppercase; }
.select-field select { width: 100%; min-height: 32px; padding: 0; background: transparent; border: 0; outline: 0; appearance: none; font-size: 14px; font-weight: 850; cursor: pointer; }
.select-field:focus-within { box-shadow: inset 0 0 0 3px var(--yellow); }

.filter-reset {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 100px;
  min-height: 58px;
  padding: 8px 14px;
  gap: 7px;
  background: var(--yellow-soft);
  border: 2px solid var(--navy);
  border-radius: 13px;
  font-size: 13px;
  font-weight: 900;
}

.filter-reset:hover { background: var(--yellow); }
.filter-reset span { font-size: 21px; }

.topic-chips {
  display: flex;
  overflow-x: auto;
  margin: 0 -4px 15px;
  padding: 5px 4px 9px;
  gap: 9px;
  scrollbar-width: thin;
  overscroll-behavior-inline: contain;
}

.topic-chip,
.filter-chip {
  display: inline-flex;
  align-items: center;
  min-height: 48px;
  padding: 9px 17px;
  gap: 8px;
  flex: 0 0 auto;
  color: var(--navy);
  background: var(--paper);
  border: 2px solid var(--navy);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 850;
  white-space: nowrap;
}

.topic-chip:hover,
.topic-chip.is-active,
.topic-chip[aria-pressed="true"],
.filter-chip.is-active,
.filter-chip[aria-pressed="true"] {
  background: var(--accent);
  box-shadow: 3px 3px 0 var(--navy);
}

.topic-chip__count { display: grid; min-width: 23px; height: 23px; place-items: center; padding: 0 5px; color: var(--paper); background: var(--navy); border-radius: 12px; font-size: 10px; }

.catalog-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 54px;
  margin-bottom: 20px;
  gap: 16px;
}

.catalog-meta p { margin: 0; color: var(--ink-soft); font-size: 14px; font-weight: 750; }
.catalog-meta p strong { color: var(--navy); }
.view-options { display: flex; gap: 5px; }
.view-option { display: grid; width: 48px; height: 48px; place-items: center; color: var(--navy); background: transparent; border: 2px solid transparent; border-radius: 11px; }
.view-option:hover { background: rgba(16, 28, 58, .07); }
.view-option.is-active { background: var(--paper); border-color: var(--navy); box-shadow: 2px 2px 0 var(--navy); }
.icon--grid { background: linear-gradient(var(--navy) 0 0) 0 0 / 9px 9px, linear-gradient(var(--navy) 0 0) 13px 0 / 9px 9px, linear-gradient(var(--navy) 0 0) 0 13px / 9px 9px, linear-gradient(var(--navy) 0 0) 13px 13px / 9px 9px; background-repeat: no-repeat; }
.icon--list { background: linear-gradient(var(--navy) 0 0) 0 2px / 22px 4px, linear-gradient(var(--navy) 0 0) 0 9px / 22px 4px, linear-gradient(var(--navy) 0 0) 0 16px / 22px 4px; background-repeat: no-repeat; }

.topic-groups { display: grid; gap: clamp(44px, 5vw, 76px); }

.topic-group {
  position: relative;
  scroll-margin-top: calc(var(--header-height) + 110px);
}

.topic-group__heading,
.topic-header {
  display: flex;
  align-items: end;
  justify-content: space-between;
  margin-bottom: 18px;
  padding-bottom: 13px;
  gap: 20px;
  border-bottom: 3px solid var(--navy);
}

.topic-group__heading h2,
.topic-header h2 { margin: 0; font-family: var(--font-display); font-size: clamp(25px, 2.8vw, 39px); letter-spacing: -.04em; }
.topic-group__heading p,
.topic-header p { max-width: 600px; margin: 0; color: var(--ink-soft); font-size: 13px; font-weight: 700; }
.topic-group__count { display: inline-flex; align-items: center; min-height: 36px; padding: 6px 12px; background: var(--yellow); border: 2px solid var(--navy); border-radius: 999px; font-size: 12px; font-weight: 900; white-space: nowrap; }

/* Game cards */

.game-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: clamp(16px, 2vw, 28px);
}

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

.game-card {
  --card-accent: var(--coral);
  position: relative;
  display: flex;
  min-width: 0;
  min-height: 365px;
  overflow: hidden;
  flex-direction: column;
  color: var(--navy);
  background: var(--paper);
  border: 3px solid var(--navy);
  border-radius: 23px;
  box-shadow: 6px 6px 0 rgba(16, 28, 58, .18);
  transition: transform .22s var(--ease-out), box-shadow .22s var(--ease-out);
}

.game-card[data-grade="5"], .game-card.grade-5, .game-card--grade-5 { --card-accent: var(--grade-5); }
.game-card[data-grade="6"], .game-card.grade-6, .game-card--grade-6 { --card-accent: var(--grade-6); }
.game-card[data-grade="7"], .game-card.grade-7, .game-card--grade-7 { --card-accent: var(--grade-7); }
.game-card[data-grade="8"], .game-card.grade-8, .game-card--grade-8 { --card-accent: var(--grade-8); }
.game-card[data-grade="all"], .game-card.grade-all, .game-card--general { --card-accent: var(--teal); }

.game-card:hover { transform: translateY(-7px); box-shadow: 9px 13px 0 rgba(16, 28, 58, .19); }
.game-card:focus-within { outline: 4px solid var(--yellow); outline-offset: 4px; }

.game-card__art,
.game-card__visual,
.game-card__thumb {
  position: relative;
  display: grid;
  min-height: 150px;
  overflow: hidden;
  place-items: center;
  background-color: var(--card-accent);
  background-image:
    linear-gradient(rgba(16, 28, 58, .11) 2px, transparent 2px),
    linear-gradient(90deg, rgba(16, 28, 58, .11) 2px, transparent 2px);
  background-size: 30px 30px;
  border-bottom: 3px solid var(--navy);
}

.game-card__art::before,
.game-card__visual::before,
.game-card__thumb::before {
  content: "";
  position: absolute;
  top: -32px;
  left: -22px;
  width: 105px;
  height: 105px;
  background: rgba(255, 250, 240, .3);
  border: 3px solid var(--navy);
  border-radius: 50%;
}

.game-card__art::after,
.game-card__visual::after,
.game-card__thumb::after {
  content: "+";
  position: absolute;
  right: 18px;
  bottom: 8px;
  color: rgba(16, 28, 58, .24);
  font-family: Georgia, serif;
  font-size: 62px;
  font-weight: 900;
  transform: rotate(13deg);
}

.game-card__emoji,
.game-card__icon {
  position: relative;
  z-index: 1;
  display: grid;
  width: 82px;
  height: 82px;
  place-items: center;
  color: var(--navy);
  background: var(--paper);
  border: 3px solid var(--navy);
  border-radius: 20px;
  box-shadow: 5px 5px 0 var(--navy);
  font-family: var(--font-display);
  font-size: 43px;
  line-height: 1;
  transform: rotate(-3deg);
}

.game-card__body { display: flex; min-width: 0; padding: 20px; flex: 1; flex-direction: column; }
.game-card__meta { display: flex; min-height: 26px; align-items: center; flex-wrap: wrap; margin-bottom: 10px; gap: 7px; }
.game-card__title { margin-bottom: 8px; font-family: var(--font-display); font-size: clamp(20px, 1.8vw, 27px); line-height: 1.12; letter-spacing: -.035em; }
.game-card__description { display: -webkit-box; overflow: hidden; margin-bottom: 18px; color: var(--ink-soft); font-size: 13px; line-height: 1.45; -webkit-box-orient: vertical; -webkit-line-clamp: 3; }
.game-card__footer { display: flex; align-items: center; justify-content: space-between; margin-top: auto; gap: 10px; }

.game-card__play,
.play-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 9px 15px;
  gap: 8px;
  color: var(--paper);
  background: var(--navy);
  border: 2px solid var(--navy);
  border-radius: 12px;
  font-size: 13px;
  font-weight: 900;
}

.game-card__play:hover,
.play-button:hover { color: var(--navy); background: var(--card-accent); }
.game-card__play span { font-size: 20px; }

.pill,
.badge,
.game-tag,
.mode-badge,
.grade-badge {
  display: inline-flex;
  align-items: center;
  min-height: 25px;
  padding: 4px 9px;
  gap: 5px;
  color: var(--navy);
  background: var(--cream);
  border: 1.5px solid var(--navy);
  border-radius: 999px;
  font-size: 9px;
  font-weight: 950;
  letter-spacing: .05em;
  line-height: 1;
  text-transform: uppercase;
}

.pill--grade,
.grade-badge { background: var(--card-accent, var(--accent)); }
.mode-badge[data-mode="single"], .badge--single { background: #ffd8d3; }
.mode-badge[data-mode="two"], .badge--two { background: var(--yellow-soft); }
.mode-badge[data-mode="class"], .badge--class { background: #bceee6; }
.mode-icons { display: inline-flex; align-items: center; gap: 4px; color: var(--ink-soft); font-size: 12px; font-weight: 850; }

.game-card__difficulty,
.difficulty-dots { display: inline-flex; align-items: center; gap: 3px; }
.difficulty-dot { width: 7px; height: 7px; background: #c3c1bb; border: 1px solid var(--navy); border-radius: 50%; }
.difficulty-dot.is-filled { background: var(--card-accent); }

.game-grid.is-compact { grid-template-columns: repeat(2, 1fr); }
.game-grid.is-compact .game-card { display: grid; grid-template-columns: 160px minmax(0, 1fr); min-height: 180px; }
.game-grid.is-compact .game-card__art,
.game-grid.is-compact .game-card__visual,
.game-grid.is-compact .game-card__thumb { min-height: 100%; border-right: 3px solid var(--navy); border-bottom: 0; }

.skeleton-card {
  display: flex;
  min-height: 365px;
  padding: 190px 22px 22px;
  flex-direction: column;
  gap: 13px;
  background: var(--paper);
  border: 3px solid rgba(16, 28, 58, .25);
  border-radius: 23px;
  opacity: .75;
}

.skeleton-card span { height: 16px; background: #ddd8ce; border-radius: 8px; animation: skeleton-pulse 1.5s ease-in-out infinite; }
.skeleton-card span:first-child { width: 34%; }
.skeleton-card span:nth-child(2) { width: 78%; height: 24px; }
.skeleton-card span:nth-child(3) { width: 100%; }

@keyframes skeleton-pulse { 50% { opacity: .4; } }

.empty-state {
  max-width: 620px;
  margin: 70px auto 20px;
  padding: clamp(30px, 5vw, 58px);
  background: var(--paper);
  border: 3px dashed var(--navy);
  border-radius: var(--radius-lg);
  text-align: center;
}

.empty-state__symbol { display: grid; width: 86px; height: 86px; margin: 0 auto 20px; place-items: center; background: var(--yellow); border: 3px solid var(--navy); border-radius: 50%; font-family: Georgia, serif; font-size: 45px; font-weight: 900; }
.empty-state h2 { margin-bottom: 9px; font-family: var(--font-display); font-size: 28px; }
.empty-state p { margin-bottom: 25px; color: var(--ink-soft); }

/* Overlays, setup and game chrome */

.overlay {
  position: fixed;
  z-index: 1000;
  inset: 0;
  display: grid;
  place-items: center;
  padding: clamp(10px, 2vw, 26px);
}

.overlay__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(8, 15, 32, .78);
  backdrop-filter: blur(6px);
  animation: fade-in .22s ease both;
}

@keyframes fade-in { from { opacity: 0; } }

.modal {
  position: relative;
  z-index: 1;
  width: min(920px, 100%);
  max-height: calc(100vh - 32px);
  overflow: auto;
  background: var(--paper);
  border: 4px solid var(--navy);
  border-radius: var(--radius-xl);
  box-shadow: 14px 14px 0 rgba(0, 0, 0, .28);
  animation: modal-in .32s var(--ease-out) both;
}

@keyframes modal-in {
  from { opacity: 0; transform: translateY(24px) scale(.97); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.modal__close {
  display: grid;
  width: 52px;
  height: 52px;
  place-items: center;
  flex: 0 0 auto;
  color: var(--navy);
  background: var(--cream);
  border: 2px solid var(--navy);
  border-radius: 14px;
  font-size: 30px;
  line-height: 1;
  transition: color .18s ease, background .18s ease, transform .18s ease;
}

.modal__close:hover { color: var(--paper); background: var(--coral); transform: rotate(4deg); }
.setup-modal > .modal__close { position: absolute; z-index: 2; top: 20px; right: 20px; }

.modal__header {
  padding: clamp(30px, 4vw, 48px) clamp(30px, 5vw, 64px) 25px;
  background-color: var(--yellow-soft);
  background-image:
    linear-gradient(rgba(16, 28, 58, .065) 1px, transparent 1px),
    linear-gradient(90deg, rgba(16, 28, 58, .065) 1px, transparent 1px);
  background-size: 28px 28px;
  border-bottom: 3px solid var(--navy);
}

.modal__header h1 { max-width: 720px; margin-bottom: 8px; padding-right: 54px; font-family: var(--font-display); font-size: clamp(31px, 4vw, 49px); line-height: 1.05; letter-spacing: -.045em; }
.modal__header p:last-child { max-width: 600px; margin-bottom: 0; color: var(--ink-soft); }

.setup-form { padding: clamp(25px, 4vw, 48px) clamp(24px, 5vw, 64px) 34px; }
.setup-fieldset { min-width: 0; margin: 0 0 30px; padding: 0; border: 0; }
.setup-fieldset legend { margin-bottom: 13px; font-size: 13px; font-weight: 950; letter-spacing: .08em; text-transform: uppercase; }
.choice-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 13px; }

.choice-card {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  min-height: 104px;
  padding: 15px;
  gap: 13px;
  background: var(--cream);
  border: 3px solid transparent;
  border-radius: 16px;
  cursor: pointer;
}

.choice-card:hover { border-color: rgba(16, 28, 58, .35); }
.choice-card:focus-within { outline: 4px solid var(--yellow); outline-offset: 3px; }
.choice-card:has(input:checked) { background: #fff1bb; border-color: var(--navy); box-shadow: 4px 4px 0 var(--navy); }
.choice-card input { position: absolute; width: 1px; height: 1px; opacity: 0; }
.choice-card__visual { display: grid; width: 54px; height: 54px; place-items: center; background: var(--paper); border: 2px solid var(--navy); border-radius: 14px; font-family: var(--font-display); font-size: 19px; }
.choice-card > span:last-child { display: flex; min-width: 0; flex-direction: column; }
.choice-card strong { font-size: 15px; }
.choice-card small { margin-top: 3px; color: var(--ink-soft); font-size: 11px; line-height: 1.25; }

.setup-grid,
.team-fields { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.team-fields { margin-top: 16px; padding: 18px; background: #e1f6f1; border: 2px dashed var(--teal-dark); border-radius: 16px; }

.form-field { display: grid; gap: 7px; font-weight: 850; }
.form-field > span { font-size: 12px; letter-spacing: .04em; }
.form-field input,
.form-field select {
  width: 100%;
  min-height: 56px;
  padding: 10px 14px;
  background: var(--white);
  border: 2px solid var(--navy);
  border-radius: 12px;
  outline: 0;
  font-weight: 750;
}
.form-field input:focus,
.form-field select:focus { box-shadow: 0 0 0 4px var(--yellow); }

.modal__actions { display: flex; align-items: center; justify-content: flex-end; margin-top: 32px; gap: 14px; }

.game-overlay { padding: 0; }
.game-shell {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  width: 100%;
  height: 100%;
  overflow: hidden;
  color: var(--navy);
  background-color: var(--cream);
  background-image:
    linear-gradient(rgba(16, 28, 58, .04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(16, 28, 58, .04) 1px, transparent 1px);
  background-size: 38px 38px;
  animation: game-in .3s var(--ease-out) both;
}

@keyframes game-in { from { opacity: .5; transform: scale(.985); } }

.game-shell__header {
  position: relative;
  z-index: 10;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: center;
  min-height: 88px;
  padding: 10px clamp(14px, 2.2vw, 34px);
  gap: 20px;
  color: var(--paper);
  background: var(--navy);
  border-bottom: 5px solid var(--accent);
  box-shadow: 0 4px 0 rgba(16, 28, 58, .16);
}

.game-shell__identity { display: flex; min-width: 0; align-items: center; gap: 18px; }
.game-shell__identity > div { min-width: 0; }
.game-shell__identity h1 { overflow: hidden; margin: 3px 0 0; font-family: var(--font-display); font-size: clamp(18px, 2vw, 30px); line-height: 1; text-overflow: ellipsis; white-space: nowrap; }
.game-shell__meta { display: flex; flex-wrap: wrap; gap: 5px; }
.game-shell__meta .pill { min-height: 20px; padding: 3px 7px; color: var(--navy); border: 0; font-size: 8px; }

.game-close {
  display: inline-flex;
  min-width: 76px;
  min-height: 54px;
  align-items: center;
  justify-content: center;
  padding: 8px 13px;
  gap: 7px;
  color: var(--paper);
  background: var(--navy-2);
  border: 2px solid var(--navy-3);
  border-radius: 13px;
  font-size: 13px;
  font-weight: 900;
}

.game-close:hover { color: var(--navy); background: var(--coral); border-color: var(--paper); }
.game-close span:first-child { font-size: 22px; }

.game-shell__status { display: flex; align-items: center; justify-content: center; gap: 9px; }
.status-chip { display: flex; min-height: 54px; align-items: center; padding: 7px 14px; gap: 8px; color: var(--paper); background: var(--navy-2); border: 2px solid var(--navy-3); border-radius: 14px; }
.status-chip small { color: #aeb8cf; font-size: 8px; font-weight: 950; letter-spacing: .11em; }
.status-chip strong { font-family: var(--font-display); font-size: 18px; }
.status-chip--timer { min-width: 103px; justify-content: center; }
.timer-ring { position: relative; width: 22px; height: 22px; border: 3px solid var(--teal); border-right-color: rgba(255, 255, 255, .24); border-radius: 50%; transform: rotate(-45deg); }
.is-urgent .timer-ring, .status-chip.is-urgent .timer-ring { border-color: var(--coral); border-right-color: rgba(255,255,255,.2); animation: urgent-pulse .8s ease-in-out infinite; }
@keyframes urgent-pulse { 50% { transform: rotate(-45deg) scale(1.17); } }

.game-shell__actions { display: flex; justify-content: flex-end; gap: 7px; }
.round-button { display: grid; width: 52px; height: 52px; place-items: center; color: var(--paper); background: transparent; border: 2px solid var(--navy-3); border-radius: 50%; font-family: var(--font-display); font-size: 19px; }
.round-button:hover { color: var(--navy); background: var(--yellow); border-color: var(--yellow); }
.round-button .icon { transform: scale(.85); }

.game-shell__body { display: grid; min-height: 0; overflow: hidden; }
.game-scoreboard:empty { display: none; }

.game-stage {
  position: relative;
  display: grid;
  min-width: 0;
  min-height: 0;
  overflow: auto;
  place-items: center;
  padding: clamp(18px, 3vw, 48px);
  overscroll-behavior: contain;
}

.game-loading { display: grid; place-items: center; color: var(--ink-soft); font-weight: 850; }
.game-loading__shape { display: grid; width: 92px; height: 92px; margin-bottom: 18px; place-items: center; color: var(--navy); background: var(--yellow); border: 4px solid var(--navy); border-radius: 28px 15px 28px 15px; box-shadow: 7px 7px 0 var(--navy); font-family: Georgia, serif; font-size: 53px; font-weight: 900; animation: loading-wiggle 1.3s ease-in-out infinite; }
@keyframes loading-wiggle { 50% { transform: rotate(5deg) scale(1.03); } }

.game-shell__footer {
  position: relative;
  z-index: 9;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 78px;
  padding: 10px clamp(18px, 2.5vw, 40px);
  gap: 20px;
  background: var(--paper);
  border-top: 3px solid var(--navy);
}

.game-instruction { margin: 0; color: var(--ink-soft); font-size: clamp(13px, 1.3vw, 17px); font-weight: 800; }
.game-instruction::before { content: "i"; display: inline-grid; width: 26px; height: 26px; margin-right: 9px; place-items: center; color: var(--paper); background: var(--navy); border-radius: 50%; font-family: Georgia, serif; font-size: 14px; font-weight: 900; }
.game-footer-actions { display: flex; gap: 10px; }

.pause-curtain {
  position: absolute;
  z-index: 50;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 22px;
  background: rgba(16, 28, 58, .86);
  backdrop-filter: blur(7px);
}

.pause-card { min-width: min(420px, 100%); padding: 42px; color: var(--navy); background: var(--paper); border: 4px solid var(--navy); border-radius: var(--radius-lg); box-shadow: 10px 10px 0 rgba(0, 0, 0, .25); text-align: center; }
.pause-card > span { display: grid; width: 78px; height: 78px; margin: 0 auto 20px; place-items: center; background: var(--yellow); border: 3px solid var(--navy); border-radius: 50%; font-family: var(--font-display); font-size: 30px; }
.pause-card h2 { margin-bottom: 25px; font-family: var(--font-display); font-size: 31px; }

/* Teacher drawer */

.drawer-backdrop {
  position: fixed;
  z-index: 1190;
  inset: 0;
  background: rgba(8, 15, 32, .56);
  backdrop-filter: blur(3px);
}

.teacher-drawer {
  position: fixed;
  z-index: 1200;
  top: 0;
  right: 0;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  width: min(460px, 94vw);
  height: 100dvh;
  overflow: hidden;
  background: var(--paper);
  border-left: 4px solid var(--navy);
  box-shadow: -12px 0 0 rgba(16, 28, 58, .18);
  transform: translateX(calc(100% + 18px));
  visibility: hidden;
  transition: transform .32s var(--ease-out), visibility .32s;
}

.teacher-drawer.is-open,
.teacher-drawer[aria-hidden="false"] { transform: translateX(0); visibility: visible; }

.teacher-drawer__header { display: flex; align-items: center; justify-content: space-between; min-height: 108px; padding: 20px 22px 18px 26px; gap: 16px; color: var(--paper); background: var(--navy); border-bottom: 5px solid var(--yellow); }
.teacher-drawer__header p { margin-bottom: 4px; color: var(--yellow); }
.teacher-drawer__header h2 { margin: 0; font-family: var(--font-display); font-size: 27px; letter-spacing: -.035em; }
.teacher-drawer__header .modal__close { color: var(--paper); background: var(--navy-2); border-color: var(--navy-3); }

.teacher-drawer__body { overflow-y: auto; padding: 22px; overscroll-behavior: contain; }
.tool-section { padding: 21px; background: var(--cream); border: 2px solid var(--navy); border-radius: 18px; box-shadow: 3px 3px 0 rgba(16, 28, 58, .15); }
.tool-section + .tool-section { margin-top: 18px; }
.tool-section h3 { margin: 0 0 15px; font-family: var(--font-display); font-size: 19px; }
.tool-section__heading { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.tool-badge { padding: 4px 8px; color: var(--teal-dark); background: #d1f1ea; border: 1px solid var(--teal-dark); border-radius: 999px; font-size: 8px; font-weight: 950; letter-spacing: .08em; text-transform: uppercase; }

.class-timer { display: block; margin: 6px 0 13px; padding: 13px; color: var(--paper); background: var(--navy); border-radius: 13px; font-family: var(--font-display); font-size: clamp(37px, 10vw, 53px); line-height: 1; text-align: center; letter-spacing: .04em; }
.class-timer.is-urgent { color: var(--yellow); background: var(--coral-dark); animation: urgent-pulse .8s ease-in-out infinite; }
.timer-presets { display: grid; grid-template-columns: repeat(4, 1fr); margin-bottom: 12px; gap: 6px; }
.timer-presets button { min-height: 42px; padding: 5px; background: var(--paper); border: 2px solid var(--navy); border-radius: 9px; font-size: 11px; font-weight: 900; }
.timer-presets button:hover,
.timer-presets button.is-active { background: var(--yellow); }
.tool-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 9px; }
.tool-actions .button { min-height: 48px; padding: 9px; font-size: 13px; box-shadow: 3px 3px 0 var(--navy); }

.switch-row { display: flex; min-height: 72px; align-items: center; justify-content: space-between; gap: 15px; border-top: 1px dashed rgba(16, 28, 58, .25); cursor: pointer; }
.switch-row:first-of-type { border-top: 0; }
.switch-row > span { display: flex; min-width: 0; flex-direction: column; }
.switch-row strong { font-size: 13px; }
.switch-row small { margin-top: 2px; color: var(--ink-soft); font-size: 10px; }
.switch { position: relative; width: 51px; height: 29px; flex: 0 0 auto; background: #b8bac0; border: 2px solid var(--navy); border-radius: 18px; appearance: none; cursor: pointer; transition: background .18s ease; }
.switch::after { content: ""; position: absolute; top: 3px; left: 3px; width: 19px; height: 19px; background: var(--paper); border: 2px solid var(--navy); border-radius: 50%; transition: transform .18s ease; }
.switch:checked { background: var(--teal); }
.switch:checked::after { transform: translateX(21px); }

.quick-tools { display: grid; grid-template-columns: repeat(2, 1fr); gap: 9px; }
.quick-tools button { display: grid; grid-template-columns: 37px 1fr; min-height: 64px; align-items: center; padding: 9px; gap: 8px; background: var(--paper); border: 2px solid var(--navy); border-radius: 12px; text-align: left; }
.quick-tools button:hover { background: var(--yellow-soft); box-shadow: 3px 3px 0 var(--navy); }
.quick-tools span { display: grid; width: 37px; height: 37px; place-items: center; background: var(--yellow); border: 1.5px solid var(--navy); border-radius: 9px; font-size: 20px; }
.quick-tools strong { font-size: 11px; line-height: 1.15; }

.teacher-drawer__footer { display: flex; align-items: center; min-height: 76px; padding: 14px 24px; gap: 12px; color: var(--paper); background: var(--navy); }
.teacher-drawer__footer p { display: flex; margin: 0; flex-direction: column; }
.teacher-drawer__footer strong { font-size: 11px; }
.teacher-drawer__footer small { color: #aeb8ca; font-size: 9px; }
.offline-dot { width: 13px; height: 13px; flex: 0 0 auto; background: var(--teal); border: 2px solid var(--paper); border-radius: 50%; box-shadow: 0 0 0 4px rgba(54, 188, 166, .2); }

/* Toasts and transient messages */

.toast-region { position: fixed; z-index: 3000; right: 22px; bottom: 22px; display: flex; width: min(400px, calc(100vw - 44px)); flex-direction: column; gap: 10px; pointer-events: none; }
.toast { position: relative; display: grid; grid-template-columns: auto 1fr auto; align-items: center; min-height: 68px; padding: 12px 14px; gap: 12px; color: var(--paper); background: var(--navy); border: 3px solid var(--paper); border-radius: 15px; box-shadow: 6px 6px 0 rgba(0, 0, 0, .3); pointer-events: auto; animation: toast-in .3s var(--ease-out) both; }
.toast--success { border-color: var(--teal); }
.toast--error { border-color: var(--coral); }
.toast--warning { color: var(--navy); background: var(--yellow); border-color: var(--navy); }
.toast__icon { display: grid; width: 37px; height: 37px; place-items: center; color: var(--navy); background: var(--yellow); border-radius: 50%; font-weight: 950; }
.toast__content { display: flex; min-width: 0; flex-direction: column; }
.toast__content strong { font-size: 13px; }
.toast__content small { color: #c8d0df; font-size: 10px; }
.toast--warning .toast__content small { color: var(--ink-soft); }
.toast__close { display: grid; width: 38px; height: 38px; place-items: center; color: inherit; background: transparent; border-radius: 9px; font-size: 22px; }
@keyframes toast-in { from { opacity: 0; transform: translateX(25px); } }

/* Shared game arena building blocks */

.game-arena,
.question-arena,
.arena {
  width: min(1180px, 100%);
  margin: auto;
}

.game-arena--wide,
.arena--wide { width: min(1420px, 100%); }

.arena-card,
.question-card,
.challenge-card {
  position: relative;
  width: 100%;
  padding: clamp(24px, 4vw, 52px);
  background: var(--paper);
  border: 4px solid var(--navy);
  border-radius: clamp(20px, 3vw, 34px);
  box-shadow: 9px 9px 0 rgba(16, 28, 58, .18);
  text-align: center;
}

.arena-card::before,
.question-card::before,
.challenge-card::before {
  content: "";
  position: absolute;
  top: -11px;
  left: 7%;
  width: 96px;
  height: 19px;
  background: rgba(244, 200, 74, .72);
  border-right: 1px solid rgba(16, 28, 58, .25);
  border-left: 1px solid rgba(16, 28, 58, .25);
  transform: rotate(-2deg);
}

.question-label,
.challenge-label,
.arena-kicker {
  display: inline-flex;
  min-height: 29px;
  align-items: center;
  margin-bottom: 13px;
  padding: 5px 12px;
  color: var(--navy);
  background: var(--yellow);
  border: 2px solid var(--navy);
  border-radius: 999px;
  font-size: 9px;
  font-weight: 950;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.question-prompt,
.prompt,
.challenge-prompt {
  max-width: 1000px;
  margin: 0 auto clamp(22px, 3vw, 38px);
  font-family: var(--font-display);
  font-size: clamp(27px, 4.4vw, 66px);
  line-height: 1.12;
  letter-spacing: -.04em;
  text-wrap: balance;
}

.question-prompt--compact { font-size: clamp(24px, 3.2vw, 48px); }
.question-subtitle,
.prompt-support { max-width: 760px; margin: -20px auto 27px; color: var(--ink-soft); font-size: clamp(13px, 1.4vw, 18px); font-weight: 700; }

.equation,
.math-expression,
.problem-expression {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  margin: 8px auto clamp(24px, 3vw, 38px);
  gap: .2em;
  font-family: var(--font-display);
  font-size: clamp(38px, 6.5vw, 92px);
  font-variant-numeric: tabular-nums;
  line-height: 1.05;
}

.equation .unknown,
.math-blank {
  display: inline-grid;
  min-width: 1.35em;
  min-height: 1.25em;
  place-items: center;
  color: var(--navy);
  background: var(--yellow);
  border: .06em solid var(--navy);
  border-radius: .22em;
  box-shadow: .08em .08em 0 var(--navy);
}

.fraction { display: inline-grid; grid-template-rows: auto auto; vertical-align: middle; line-height: 1; }
.fraction > span:first-child { padding: 0 .16em .1em; border-bottom: .06em solid currentColor; }
.fraction > span:last-child { padding: .1em .16em 0; }

.answers-grid,
.answer-grid,
.choices-grid,
.options-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  width: min(900px, 100%);
  margin: 0 auto;
  gap: clamp(12px, 1.7vw, 22px);
}

.answers-grid--3,
.choices-grid--3 { grid-template-columns: repeat(3, 1fr); }
.answers-grid--4,
.choices-grid--4 { grid-template-columns: repeat(4, 1fr); }

.answer-button,
.answer-btn,
.option-button,
.option-btn,
.choice-button {
  position: relative;
  display: grid;
  min-height: clamp(70px, 9vh, 102px);
  place-items: center;
  padding: 12px 18px;
  overflow: hidden;
  color: var(--navy);
  background: var(--cream);
  border: 3px solid var(--navy);
  border-radius: 17px;
  box-shadow: 4px 4px 0 var(--navy);
  font-family: var(--font-display);
  font-size: clamp(20px, 2.6vw, 38px);
  font-weight: 900;
  line-height: 1.15;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
}

.answer-button:nth-child(4n + 1), .option-button:nth-child(4n + 1), .choice-button:nth-child(4n + 1) { background: #ffd9d4; }
.answer-button:nth-child(4n + 2), .option-button:nth-child(4n + 2), .choice-button:nth-child(4n + 2) { background: #ffecab; }
.answer-button:nth-child(4n + 3), .option-button:nth-child(4n + 3), .choice-button:nth-child(4n + 3) { background: #c7efe8; }
.answer-button:nth-child(4n), .option-button:nth-child(4n), .choice-button:nth-child(4n) { background: #d8e4fb; }

.answer-button:hover,
.answer-btn:hover,
.option-button:hover,
.option-btn:hover,
.choice-button:hover { transform: translate(-2px, -3px); box-shadow: 7px 8px 0 var(--navy); }
.answer-button:active,
.answer-btn:active,
.option-button:active,
.option-btn:active,
.choice-button:active { transform: translate(3px, 3px); box-shadow: 1px 1px 0 var(--navy); }

.answer-button.is-selected,
.answer-btn.is-selected,
.option-button.is-selected,
.choice-button.is-selected { box-shadow: 0 0 0 5px var(--yellow), 5px 5px 0 var(--navy); }
.answer-button.is-correct,
.answer-button.correct,
.answer-btn.correct,
.option-button.is-correct,
.choice-button.correct,
[data-answer-state="correct"] { color: var(--paper); background: var(--green) !important; border-color: var(--navy); animation: correct-pop .35s var(--ease-out); }
.answer-button.is-wrong,
.answer-button.wrong,
.answer-btn.wrong,
.option-button.is-wrong,
.choice-button.wrong,
[data-answer-state="wrong"] { color: var(--paper); background: var(--red) !important; animation: wrong-shake .35s ease; }

@keyframes correct-pop { 50% { transform: scale(1.07) rotate(-1deg); } }
@keyframes wrong-shake { 25% { transform: translateX(-8px); } 75% { transform: translateX(8px); } }

.answer-key,
.option-key { position: absolute; top: 7px; left: 9px; display: grid; min-width: 25px; height: 25px; place-items: center; padding: 0 5px; color: var(--paper); background: var(--navy); border-radius: 7px; font-family: var(--font-sans); font-size: 10px; }

.answer-form,
.numeric-answer { display: flex; width: min(650px, 100%); margin: 0 auto; align-items: stretch; justify-content: center; gap: 12px; }
.answer-input,
.numeric-input { min-width: 0; min-height: 72px; padding: 10px 20px; flex: 1; background: var(--white); border: 4px solid var(--navy); border-radius: 16px; outline: 0; font-family: var(--font-display); font-size: clamp(25px, 4vw, 44px); font-weight: 900; text-align: center; }
.answer-input:focus,
.numeric-input:focus { box-shadow: 0 0 0 6px var(--yellow); }
.submit-answer { min-width: 140px; min-height: 72px; color: var(--paper); background: var(--navy); border: 3px solid var(--navy); border-radius: 16px; box-shadow: 4px 4px 0 var(--coral); font-weight: 950; }

.progress-track,
.game-progress { position: relative; width: min(850px, 100%); height: 15px; overflow: hidden; margin: 0 auto 24px; background: #d6d2c9; border: 2px solid var(--navy); border-radius: 999px; }
.progress-fill,
.game-progress__fill { width: var(--progress, 0%); height: 100%; background: var(--teal); border-right: 2px solid var(--navy); border-radius: inherit; transition: width .35s var(--ease-out); }

.feedback-banner,
.answer-feedback { display: flex; max-width: 900px; min-height: 62px; align-items: center; justify-content: center; margin: 20px auto 0; padding: 11px 18px; gap: 10px; background: var(--yellow-soft); border: 3px solid var(--navy); border-radius: 15px; font-weight: 850; }
.feedback-banner.is-correct,
.answer-feedback.correct { color: var(--paper); background: var(--green); }
.feedback-banner.is-wrong,
.answer-feedback.wrong { color: var(--paper); background: var(--red); }
.feedback-icon { display: grid; width: 34px; height: 34px; place-items: center; color: var(--navy); background: var(--paper); border: 2px solid var(--navy); border-radius: 50%; font-weight: 950; }

/* Scoreboards, players and class teams */

.game-shell__body { grid-template-rows: auto minmax(0, 1fr); }
.game-scoreboard,
.scoreboard,
.score-board {
  display: flex;
  flex-wrap: wrap;
  min-height: 66px;
  align-items: stretch;
  justify-content: center;
  padding: 7px clamp(12px, 2.2vw, 34px);
  gap: 8px;
  color: var(--navy);
  background: #e9e3d7;
  border-bottom: 2px solid var(--navy);
}

.score-card,
.player-score,
.team-score {
  display: grid;
  grid-template-columns: auto auto;
  min-width: 170px;
  align-items: center;
  justify-content: space-between;
  padding: 7px 14px;
  gap: 12px;
  background: var(--paper);
  border: 2px solid var(--navy);
  border-radius: 11px;
}

.score-card--one,
.player-score[data-player="1"],
.team-score:nth-child(1) { border-left: 9px solid var(--coral); }
.score-card--two,
.player-score[data-player="2"],
.team-score:nth-child(2) { border-left: 9px solid var(--teal); }
.score-name,
.player-score__name,
.team-name { overflow: hidden; font-size: 11px; font-weight: 900; text-overflow: ellipsis; white-space: nowrap; }
.score-value,
.player-score__value,
.team-points { font-family: var(--font-display); font-size: 24px; line-height: 1; font-variant-numeric: tabular-nums; }
.score-card.is-active,
.player-score.is-active,
.team-score.is-active { background: var(--yellow-soft); box-shadow: inset 0 0 0 2px var(--yellow); }
.score-divider { display: grid; min-width: 46px; place-items: center; font-family: var(--font-display); font-size: 16px; }

.split-arena,
.duel-arena,
.two-player-arena {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  width: 100%;
  min-height: 100%;
  overflow: hidden;
  border: 4px solid var(--navy);
  border-radius: 28px;
  box-shadow: var(--shadow-md);
}

.player-panel,
.duel-panel {
  position: relative;
  display: flex;
  min-width: 0;
  min-height: 420px;
  align-items: center;
  justify-content: center;
  padding: clamp(22px, 4vw, 54px);
  flex-direction: column;
  background: #ffe3df;
}

.player-panel + .player-panel,
.duel-panel + .duel-panel { background: #d8f3ee; border-left: 4px solid var(--navy); }
.player-panel[data-player="1"] { --player-color: var(--coral); }
.player-panel[data-player="2"] { --player-color: var(--teal); }
.player-label { position: absolute; top: 14px; left: 16px; display: inline-flex; min-height: 35px; align-items: center; padding: 6px 13px; background: var(--player-color, var(--yellow)); border: 2px solid var(--navy); border-radius: 999px; font-size: 11px; font-weight: 950; }
.duel-question { grid-column: 1 / -1; font-family: var(--font-display); font-size: clamp(25px, 4vw, 56px); text-align: center; }
.buzzer,
.player-buzzer { display: grid; width: min(270px, 70%); aspect-ratio: 1; place-items: center; color: var(--paper); background: var(--player-color, var(--coral)); border: clamp(8px, 1vw, 14px) solid var(--navy); border-radius: 50%; box-shadow: 0 14px 0 var(--navy), 0 20px 0 rgba(16, 28, 58, .18); font-family: var(--font-display); font-size: clamp(20px, 3vw, 39px); }
.buzzer:active,
.player-buzzer:active { transform: translateY(12px); box-shadow: 0 2px 0 var(--navy), 0 6px 0 rgba(16, 28, 58, .18); }

.team-board,
.class-scoreboard { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); width: min(1200px, 100%); gap: 15px; }
.team-panel,
.class-team { position: relative; min-height: 180px; padding: 22px; background: var(--paper); border: 4px solid var(--navy); border-top: 13px solid var(--team-color, var(--coral)); border-radius: 20px; box-shadow: 6px 6px 0 rgba(16,28,58,.18); text-align: center; }
.team-panel:nth-child(2), .class-team:nth-child(2) { --team-color: var(--teal); }
.team-panel:nth-child(3), .class-team:nth-child(3) { --team-color: var(--yellow); }
.team-panel:nth-child(4), .class-team:nth-child(4) { --team-color: var(--blue); }
.team-panel h3,
.class-team h3 { margin-bottom: 6px; font-family: var(--font-display); font-size: 20px; }
.team-panel .team-points,
.class-team .team-points { display: block; margin: 10px 0; font-size: 54px; }
.score-controls { display: flex; justify-content: center; gap: 8px; }
.score-controls button { display: grid; width: 50px; height: 50px; place-items: center; background: var(--cream); border: 2px solid var(--navy); border-radius: 12px; font-family: var(--font-display); font-size: 24px; }

.turn-indicator { display: inline-flex; min-height: 40px; align-items: center; padding: 7px 14px; gap: 7px; background: var(--yellow); border: 2px solid var(--navy); border-radius: 999px; font-size: 12px; font-weight: 950; animation: turn-bob 1.8s ease-in-out infinite; }
@keyframes turn-bob { 50% { transform: translateY(-3px); } }

/* Number pad and tactile controls */

.number-pad,
.numpad,
.keypad {
  display: grid;
  grid-template-columns: repeat(3, minmax(68px, 1fr));
  width: min(430px, 100%);
  margin: 20px auto 0;
  gap: 9px;
}

.number-key,
.numpad button,
.keypad button {
  min-height: clamp(58px, 8vh, 78px);
  padding: 8px;
  background: var(--paper);
  border: 3px solid var(--navy);
  border-radius: 13px;
  box-shadow: 3px 3px 0 var(--navy);
  font-family: var(--font-display);
  font-size: clamp(22px, 3vw, 34px);
  font-weight: 900;
}

.number-key:hover,
.numpad button:hover,
.keypad button:hover { background: var(--yellow-soft); }
.number-key:active,
.numpad button:active,
.keypad button:active { transform: translate(2px, 2px); box-shadow: 1px 1px 0 var(--navy); }
.number-key--wide,
.numpad .wide,
.keypad .key-wide { grid-column: span 2; }
.number-key--action,
.numpad .action,
.keypad .key-action { color: var(--paper); background: var(--navy); }
.number-key--delete,
.numpad .delete { background: #ffd7d2; }
.number-display { min-height: 75px; margin: 0 auto 13px; padding: 10px 20px; background: var(--white); border: 4px solid var(--navy); border-radius: 15px; font-family: var(--font-display); font-size: clamp(28px, 4vw, 48px); text-align: center; font-variant-numeric: tabular-nums; }

/* Memory, matching, sorting and classification */

.memory-grid,
.matching-grid {
  display: grid;
  grid-template-columns: repeat(var(--memory-cols, 4), minmax(90px, 1fr));
  width: min(950px, 100%);
  margin: auto;
  gap: clamp(9px, 1.5vw, 17px);
  perspective: 1100px;
}

.memory-card,
.match-card {
  position: relative;
  min-height: clamp(92px, 15vh, 150px);
  padding: 0;
  background: transparent;
  border-radius: 16px;
  transform-style: preserve-3d;
  transition: transform .45s var(--ease-out);
}

.memory-card__inner { position: absolute; inset: 0; transform-style: preserve-3d; transition: transform .45s var(--ease-out); }
.memory-card.is-flipped .memory-card__inner,
.memory-card.flipped .memory-card__inner { transform: rotateY(180deg); }
.memory-card__front,
.memory-card__back,
.match-card { display: grid; place-items: center; padding: 10px; border: 3px solid var(--navy); border-radius: 16px; box-shadow: 4px 4px 0 var(--navy); backface-visibility: hidden; font-family: var(--font-display); font-size: clamp(18px, 2.5vw, 34px); font-weight: 900; text-align: center; }
.memory-card__front { position: absolute; inset: 0; color: var(--paper); background-color: var(--navy); background-image: radial-gradient(rgba(255,255,255,.15) 2px, transparent 2px); background-size: 18px 18px; }
.memory-card__front::after { content: "?"; display: grid; width: 53px; height: 53px; place-items: center; color: var(--navy); background: var(--yellow); border: 3px solid var(--paper); border-radius: 50%; }
.memory-card__back { position: absolute; inset: 0; background: var(--paper); transform: rotateY(180deg); }
.memory-card.is-matched .memory-card__back,
.memory-card.matched .memory-card__back,
.match-card.is-matched { background: #bfe9ce; box-shadow: 0 0 0 5px var(--green), 4px 4px 0 var(--navy); }

.match-columns { display: grid; grid-template-columns: 1fr auto 1fr; width: min(1000px, 100%); align-items: start; gap: 25px; }
.match-column { display: grid; gap: 11px; }
.match-column__title { margin-bottom: 4px; font-family: var(--font-display); font-size: 17px; text-align: center; }
.match-item { display: grid; min-height: 68px; place-items: center; padding: 11px; background: var(--paper); border: 3px solid var(--navy); border-radius: 13px; box-shadow: 3px 3px 0 var(--navy); font-size: clamp(15px, 1.8vw, 24px); font-weight: 850; text-align: center; }
.match-item.is-selected { background: var(--yellow); box-shadow: 0 0 0 4px var(--coral), 4px 4px 0 var(--navy); }
.match-item.is-matched { color: var(--paper); background: var(--green); opacity: .7; }
.match-lines { align-self: stretch; width: 4px; background: repeating-linear-gradient(to bottom, var(--navy) 0 8px, transparent 8px 15px); }

.sort-game,
.ordering-game,
.classify-game { display: grid; width: min(1180px, 100%); gap: clamp(18px, 3vw, 34px); }
.sort-bank,
.card-bank,
.build-pieces,
.piece-bank { display: flex; min-height: 115px; align-items: center; justify-content: center; flex-wrap: wrap; padding: 18px; gap: 12px; background: #e6e0d4; border: 3px dashed var(--navy); border-radius: 18px; }
.sort-card,
.drag-card,
.order-card,
.build-piece,
.piece { display: inline-grid; min-width: 82px; min-height: 62px; place-items: center; padding: 10px 16px; background: var(--paper); border: 3px solid var(--navy); border-radius: 13px; box-shadow: 4px 4px 0 var(--navy); font-family: var(--font-display); font-size: clamp(16px, 2vw, 27px); font-weight: 900; cursor: grab; touch-action: none; user-select: none; }
.sort-card:active,
.drag-card:active,
.order-card:active,
.build-piece:active { cursor: grabbing; transform: rotate(2deg) scale(1.04); box-shadow: 7px 9px 0 rgba(16,28,58,.28); }
.sort-card.is-dragging,
.drag-card.is-dragging { opacity: .65; transform: rotate(4deg); }

.sort-zones,
.drop-zones,
.classify-grid,
.category-zones { display: grid; grid-template-columns: repeat(var(--zone-count, 2), minmax(0, 1fr)); gap: 15px; }
.sort-zone,
.drop-zone,
.category-zone,
.classification-bin { position: relative; display: flex; min-height: 160px; align-items: center; align-content: flex-start; justify-content: center; flex-wrap: wrap; padding: 44px 15px 15px; gap: 9px; background: rgba(255,250,240,.68); border: 4px dashed var(--zone-color, var(--coral)); border-radius: 20px; }
.sort-zone:nth-child(2), .drop-zone:nth-child(2), .category-zone:nth-child(2) { --zone-color: var(--teal); }
.sort-zone:nth-child(3), .drop-zone:nth-child(3), .category-zone:nth-child(3) { --zone-color: var(--yellow); }
.sort-zone:nth-child(4), .drop-zone:nth-child(4), .category-zone:nth-child(4) { --zone-color: var(--blue); }
.sort-zone__label,
.drop-zone__label,
.category-title { position: absolute; top: 0; right: 0; left: 0; min-height: 38px; padding: 8px; background: var(--zone-color, var(--coral)); border-bottom: 2px solid var(--navy); border-radius: 15px 15px 0 0; font-size: 12px; font-weight: 950; text-align: center; }
.sort-zone.is-over,
.drop-zone.is-over,
.category-zone.is-over { background: #fff4c8; border-style: solid; transform: scale(1.015); }

.sequence-row,
.order-slots { display: flex; width: min(1100px, 100%); min-height: 110px; align-items: stretch; justify-content: center; flex-wrap: wrap; margin: auto; gap: 12px; }
.sequence-item,
.order-slot { position: relative; display: grid; min-width: 95px; min-height: 88px; place-items: center; padding: 12px; background: var(--paper); border: 3px solid var(--navy); border-radius: 14px; box-shadow: 4px 4px 0 rgba(16,28,58,.2); font-family: var(--font-display); font-size: clamp(20px, 3vw, 38px); font-weight: 900; }
.sequence-item + .sequence-item::before { content: "→"; position: absolute; left: -28px; color: var(--coral); font-size: 22px; }
.sequence-item.is-blank,
.order-slot:empty { min-width: 110px; background: var(--yellow-soft); border-style: dashed; box-shadow: none; }

/* Probability spinner */

.spinner-game,
.spinner-layout { display: grid; grid-template-columns: minmax(280px, .85fr) minmax(320px, 1.15fr); width: min(1050px, 100%); align-items: center; gap: clamp(30px, 6vw, 80px); }
.spinner-wrap { position: relative; display: grid; width: min(410px, 75vw); margin: auto; aspect-ratio: 1; place-items: center; }
.spinner-pointer { position: absolute; z-index: 5; top: -13px; left: 50%; width: 43px; height: 66px; background: var(--navy); border: 3px solid var(--paper); clip-path: polygon(0 0, 100% 0, 50% 100%); transform: translateX(-50%); filter: drop-shadow(2px 4px 0 rgba(16,28,58,.25)); }
.probability-spinner,
.spinner-wheel { position: relative; display: grid; width: 100%; height: 100%; place-items: center; background: conic-gradient(var(--coral) 0 25%, var(--yellow) 25% 50%, var(--teal) 50% 75%, var(--blue) 75% 100%); border: clamp(8px, 1vw, 14px) solid var(--navy); border-radius: 50%; box-shadow: 0 0 0 6px var(--paper), 0 0 0 10px var(--navy), 9px 12px 0 rgba(16,28,58,.17); transform: rotate(var(--spinner-rotation, 0deg)); transition: transform var(--spin-duration, 3.5s) cubic-bezier(.12,.64,.15,1); }
.probability-spinner::before,
.spinner-wheel::before { content: ""; width: 20%; height: 20%; background: var(--paper); border: 5px solid var(--navy); border-radius: 50%; box-shadow: 0 0 0 4px rgba(255,255,255,.5); }
.probability-spinner::after,
.spinner-wheel::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, transparent calc(50% - 2px), var(--navy) calc(50% - 2px) calc(50% + 2px), transparent calc(50% + 2px)), linear-gradient(transparent calc(50% - 2px), var(--navy) calc(50% - 2px) calc(50% + 2px), transparent calc(50% + 2px)); border-radius: 50%; }
.spinner-legend { display: grid; gap: 10px; }
.spinner-legend__item { display: grid; grid-template-columns: 22px 1fr auto; align-items: center; min-height: 49px; padding: 8px 12px; gap: 10px; background: var(--paper); border: 2px solid var(--navy); border-radius: 11px; font-weight: 800; }
.spinner-legend__color { width: 22px; height: 22px; background: var(--segment-color, var(--coral)); border: 2px solid var(--navy); border-radius: 6px; }
.spin-button { min-width: 190px; min-height: 68px; margin-top: 18px; color: var(--paper); background: var(--coral); border: 4px solid var(--navy); border-radius: 999px; box-shadow: 0 7px 0 var(--navy); font-family: var(--font-display); font-size: 20px; }
.spin-button:active { transform: translateY(6px); box-shadow: 0 1px 0 var(--navy); }

/* Coordinate plane, charts and data grids */

.coordinate-layout { display: grid; grid-template-columns: minmax(350px, 1fr) minmax(230px, .45fr); width: min(1100px, 100%); align-items: center; gap: clamp(25px, 5vw, 65px); }
.coordinate-grid,
.coordinate-plane { --grid-size: 10; position: relative; width: min(66vh, 660px, 100%); aspect-ratio: 1; margin: auto; overflow: hidden; background-color: var(--paper); background-image: linear-gradient(rgba(76,130,233,.25) 2px, transparent 2px), linear-gradient(90deg, rgba(76,130,233,.25) 2px, transparent 2px); background-size: calc(100% / var(--grid-size)) calc(100% / var(--grid-size)); border: 4px solid var(--navy); border-radius: 13px; box-shadow: 7px 7px 0 rgba(16,28,58,.18); touch-action: none; }
.coordinate-grid::before,
.coordinate-plane::before { content: ""; position: absolute; z-index: 2; top: 50%; right: 0; left: 0; height: 4px; background: var(--navy); transform: translateY(-50%); }
.coordinate-grid::after,
.coordinate-plane::after { content: ""; position: absolute; z-index: 2; top: 0; bottom: 0; left: 50%; width: 4px; background: var(--navy); transform: translateX(-50%); }
.coordinate-point,
.plot-point { position: absolute; z-index: 4; display: grid; width: clamp(24px, 3vw, 35px); height: clamp(24px, 3vw, 35px); place-items: center; background: var(--coral); border: 3px solid var(--navy); border-radius: 50%; box-shadow: 2px 2px 0 rgba(16,28,58,.25); transform: translate(-50%, 50%); }
.coordinate-point::after,
.plot-point::after { content: attr(data-label); position: absolute; bottom: calc(100% + 4px); left: 50%; padding: 2px 6px; background: var(--paper); border: 1px solid var(--navy); border-radius: 5px; font-size: 10px; font-weight: 900; transform: translateX(-50%); white-space: nowrap; }
.coordinate-target { position: absolute; z-index: 3; width: 10%; aspect-ratio: 1; border: 4px dashed var(--teal-dark); border-radius: 50%; transform: translate(-50%, 50%); animation: target-pulse 1.4s ease-in-out infinite; }
@keyframes target-pulse { 50% { box-shadow: 0 0 0 10px rgba(54,188,166,.2); } }
.axis-label { position: absolute; z-index: 5; padding: 2px 5px; color: var(--paper); background: var(--navy); border-radius: 4px; font-size: 9px; font-weight: 900; }
.axis-label--x { right: 4px; top: calc(50% + 5px); }
.axis-label--y { top: 4px; left: calc(50% + 6px); }

.chart-wrap,
.chart-panel { width: min(1000px, 100%); padding: clamp(20px, 3vw, 38px); background: var(--paper); border: 4px solid var(--navy); border-radius: 23px; box-shadow: var(--shadow-md); }
.chart-title { margin-bottom: 24px; font-family: var(--font-display); font-size: clamp(20px, 2.6vw, 35px); text-align: center; }
.bar-chart,
.chart-bars { display: flex; height: min(42vh, 370px); align-items: flex-end; justify-content: space-around; padding: 30px 18px 42px; gap: clamp(10px, 3vw, 35px); background-image: repeating-linear-gradient(to top, rgba(16,28,58,.13) 0 2px, transparent 2px 20%); border-bottom: 4px solid var(--navy); border-left: 4px solid var(--navy); }
.bar,
.chart-bar { position: relative; width: min(90px, 15%); height: var(--value, 50%); min-height: 6px; background: var(--bar-color, var(--coral)); border: 3px solid var(--navy); border-bottom: 0; border-radius: 11px 11px 0 0; box-shadow: 5px 0 0 rgba(16,28,58,.13); transition: height .6s var(--ease-out); }
.bar:nth-child(2), .chart-bar:nth-child(2) { --bar-color: var(--yellow); }
.bar:nth-child(3), .chart-bar:nth-child(3) { --bar-color: var(--teal); }
.bar:nth-child(4), .chart-bar:nth-child(4) { --bar-color: var(--blue); }
.bar__value,
.chart-bar__value { position: absolute; right: 0; bottom: calc(100% + 6px); left: 0; font-family: var(--font-display); font-size: clamp(14px, 2vw, 22px); text-align: center; }
.bar__label,
.chart-bar__label { position: absolute; top: calc(100% + 9px); left: 50%; width: max-content; max-width: 110px; font-size: clamp(9px, 1.2vw, 13px); font-weight: 850; text-align: center; transform: translateX(-50%); }
.line-chart { width: 100%; min-height: 300px; }
.line-chart polyline,
.line-chart path { fill: none; stroke: var(--coral); stroke-width: 5; stroke-linecap: round; stroke-linejoin: round; }
.line-chart circle { fill: var(--yellow); stroke: var(--navy); stroke-width: 3; }

.data-grid,
.math-table { display: grid; grid-template-columns: repeat(var(--columns, 4), minmax(70px, 1fr)); width: min(950px, 100%); overflow: hidden; background: var(--navy); border: 3px solid var(--navy); border-radius: 15px; gap: 2px; }
.data-cell,
.math-table > * { display: grid; min-height: 62px; place-items: center; padding: 8px; background: var(--paper); font-size: clamp(13px, 1.7vw, 20px); font-weight: 800; text-align: center; }
.data-cell--header,
.math-table__header { color: var(--paper); background: var(--navy-2); font-weight: 950; }
.data-cell.is-selectable:hover { background: var(--yellow-soft); }
.data-cell.is-selected { background: var(--yellow); box-shadow: inset 0 0 0 4px var(--coral); }

/* Balance, number line, fractions and estimation */

.balance-game { display: grid; width: min(1050px, 100%); gap: 28px; }
.balance-scale { position: relative; width: min(800px, 100%); height: clamp(260px, 38vh, 380px); margin: auto; }
.balance-scale__post { position: absolute; bottom: 25px; left: 50%; width: 34px; height: 63%; background: var(--navy); border-radius: 8px 8px 0 0; transform: translateX(-50%); }
.balance-scale__post::before { content: ""; position: absolute; top: -24px; left: 50%; width: 54px; height: 54px; background: var(--yellow); border: 5px solid var(--navy); border-radius: 50%; transform: translateX(-50%); }
.balance-scale__post::after { content: ""; position: absolute; bottom: -17px; left: 50%; width: 170px; height: 28px; background: var(--navy); border-radius: 50% 50% 10px 10px; transform: translateX(-50%); }
.balance-beam { position: absolute; top: 28%; left: 50%; width: 78%; height: 20px; background: var(--coral); border: 4px solid var(--navy); border-radius: 12px; box-shadow: 0 4px 0 rgba(16,28,58,.2); transform: translateX(-50%) rotate(var(--balance-angle, 0deg)); transform-origin: center; transition: transform .6s var(--ease-out); }
.balance-pan { position: absolute; top: calc(28% + 13px); display: flex; width: 31%; min-height: 125px; align-items: end; justify-content: center; padding-bottom: 15px; }
.balance-pan--left { left: 4%; }
.balance-pan--right { right: 4%; }
.balance-pan::before,
.balance-pan::after { content: ""; position: absolute; top: 0; width: 4px; height: 83px; background: var(--navy); transform-origin: top; }
.balance-pan::before { left: 17%; transform: rotate(17deg); }
.balance-pan::after { right: 17%; transform: rotate(-17deg); }
.balance-pan__tray { display: flex; width: 100%; min-height: 62px; align-items: center; justify-content: center; flex-wrap: wrap; padding: 10px; gap: 6px; background: var(--yellow-soft); border: 4px solid var(--navy); border-radius: 10px 10px 50% 50%; box-shadow: 0 6px 0 rgba(16,28,58,.14); font-family: var(--font-display); font-size: clamp(18px, 2.5vw, 34px); font-weight: 900; }
.weight-block { display: grid; min-width: 45px; min-height: 45px; place-items: center; padding: 5px; background: var(--teal); border: 3px solid var(--navy); border-radius: 8px; font-size: 15px; font-weight: 950; }

.number-line-wrap,
.estimate-wrap { width: min(1050px, 100%); padding: 36px clamp(20px, 4vw, 50px) 50px; background: var(--paper); border: 4px solid var(--navy); border-radius: 22px; box-shadow: var(--shadow-md); }
.number-line,
.estimate-line { position: relative; height: 18px; margin: clamp(55px, 10vh, 100px) 20px 30px; background: var(--navy); border-radius: 999px; }
.number-line::before,
.number-line::after,
.estimate-line::before,
.estimate-line::after { content: ""; position: absolute; top: 50%; width: 0; height: 0; border-top: 14px solid transparent; border-bottom: 14px solid transparent; transform: translateY(-50%); }
.number-line::before,
.estimate-line::before { left: -13px; border-right: 20px solid var(--navy); }
.number-line::after,
.estimate-line::after { right: -13px; border-left: 20px solid var(--navy); }
.number-tick,
.estimate-tick { position: absolute; top: 50%; width: 4px; height: 36px; background: var(--navy); transform: translate(-50%, -50%); }
.number-tick::after,
.estimate-tick::after { content: attr(data-label); position: absolute; top: 36px; left: 50%; font-family: var(--font-display); font-size: clamp(12px, 1.5vw, 18px); transform: translateX(-50%); }
.number-marker,
.estimate-marker { position: absolute; z-index: 3; bottom: 18px; left: var(--position, 50%); display: grid; width: clamp(48px, 6vw, 68px); height: clamp(48px, 6vw, 68px); place-items: center; background: var(--coral); border: 4px solid var(--navy); border-radius: 50% 50% 50% 4px; box-shadow: 4px 4px 0 rgba(16,28,58,.22); font-family: var(--font-display); font-size: clamp(15px, 2vw, 23px); transform: translateX(-50%) rotate(-45deg); touch-action: none; }
.number-marker > span,
.estimate-marker > span { transform: rotate(45deg); }
.estimate-range { position: absolute; top: -8px; bottom: -8px; left: var(--range-start, 35%); width: var(--range-width, 30%); background: rgba(54,188,166,.4); border: 3px dashed var(--teal-dark); border-radius: 999px; }

.fraction-models,
.fraction-options { display: flex; align-items: center; justify-content: center; flex-wrap: wrap; gap: clamp(15px, 3vw, 32px); }
.fraction-shape { --parts: 4; --filled: 1; position: relative; display: grid; width: clamp(110px, 15vw, 180px); aspect-ratio: 1; overflow: hidden; place-items: center; background: conic-gradient(var(--coral) 0 calc(var(--filled) / var(--parts) * 1turn), var(--paper) 0); border: 4px solid var(--navy); border-radius: 50%; box-shadow: 5px 5px 0 rgba(16,28,58,.18); }
.fraction-shape::after { content: ""; position: absolute; inset: 0; background: repeating-conic-gradient(from 0deg, var(--navy) 0 2deg, transparent 2deg calc(1turn / var(--parts))); }
.fraction-bar { display: grid; grid-template-columns: repeat(var(--parts, 4), 1fr); width: min(500px, 100%); min-height: 95px; overflow: hidden; background: var(--paper); border: 4px solid var(--navy); border-radius: 13px; }
.fraction-part { display: grid; place-items: center; border-right: 3px solid var(--navy); font-weight: 900; }
.fraction-part:last-child { border-right: 0; }
.fraction-part.is-filled { background: var(--coral); }

/* Race, bingo and open class activities */

.race-board { display: grid; width: min(1180px, 100%); gap: 12px; }
.race-lane { position: relative; display: grid; grid-template-columns: 135px 1fr 65px; min-height: 86px; align-items: center; overflow: hidden; background: var(--paper); border: 3px solid var(--navy); border-radius: 15px; }
.race-lane__name { align-self: stretch; display: grid; place-items: center; padding: 8px; background: var(--lane-color, var(--coral)); border-right: 3px solid var(--navy); font-size: 12px; font-weight: 950; text-align: center; }
.race-track { position: relative; height: 100%; background-image: repeating-linear-gradient(90deg, transparent 0 calc(10% - 2px), rgba(16,28,58,.12) calc(10% - 2px) 10%); }
.race-track::after { content: ""; position: absolute; top: 0; right: 0; bottom: 0; width: 28px; background: repeating-conic-gradient(var(--navy) 0 25%, var(--paper) 0 50%) 0 0 / 14px 14px; border-left: 3px solid var(--navy); }
.race-token { position: absolute; z-index: 2; top: 50%; left: var(--position, 0%); display: grid; width: 57px; height: 57px; place-items: center; background: var(--lane-color, var(--coral)); border: 3px solid var(--navy); border-radius: 50% 50% 10px 50%; box-shadow: 3px 3px 0 rgba(16,28,58,.2); font-size: 26px; transform: translate(-5%, -50%) rotate(-4deg); transition: left .55s var(--ease-out); }
.race-lane__score { font-family: var(--font-display); font-size: 23px; text-align: center; }

.bingo-layout { display: grid; grid-template-columns: minmax(350px, .85fr) minmax(280px, .45fr); width: min(1100px, 100%); align-items: center; gap: 35px; }
.bingo-card { display: grid; grid-template-columns: repeat(var(--bingo-size, 5), 1fr); overflow: hidden; background: var(--navy); border: 4px solid var(--navy); border-radius: 20px; box-shadow: var(--shadow-md); gap: 3px; }
.bingo-cell { display: grid; min-height: clamp(60px, 10vh, 95px); place-items: center; padding: 7px; background: var(--paper); font-family: var(--font-display); font-size: clamp(15px, 2vw, 26px); font-weight: 900; }
.bingo-cell:hover { background: var(--yellow-soft); }
.bingo-cell.is-marked { color: var(--paper); background: var(--coral); }
.bingo-cell.is-marked::after { content: "✓"; position: absolute; font-size: 34px; }
.bingo-draw { display: grid; place-items: center; text-align: center; }
.bingo-ball { display: grid; width: clamp(150px, 19vw, 230px); aspect-ratio: 1; place-items: center; background: var(--yellow); border: 8px solid var(--navy); border-radius: 50%; box-shadow: 0 10px 0 var(--navy), 0 16px 0 rgba(16,28,58,.15); font-family: var(--font-display); font-size: clamp(35px, 6vw, 75px); }

.target-24,
.number-builder { display: grid; width: min(920px, 100%); place-items: center; gap: 25px; }
.number-cards { display: flex; align-items: center; justify-content: center; flex-wrap: wrap; gap: 18px; }
.number-card { display: grid; width: clamp(82px, 10vw, 125px); aspect-ratio: .78; place-items: center; background: var(--paper); border: 4px solid var(--navy); border-radius: 15px; box-shadow: 6px 7px 0 var(--navy); font-family: var(--font-display); font-size: clamp(30px, 5vw, 58px); transform: rotate(var(--tilt, -2deg)); }
.number-card:nth-child(even) { --tilt: 3deg; background: var(--yellow-soft); }
.operator-bank { display: flex; flex-wrap: wrap; justify-content: center; gap: 9px; }
.operator-button { display: grid; width: 61px; height: 61px; place-items: center; color: var(--paper); background: var(--navy); border: 3px solid var(--navy); border-radius: 13px; font-family: Georgia, serif; font-size: 28px; font-weight: 900; }
.operator-button:hover,
.operator-button.is-selected { color: var(--navy); background: var(--yellow); box-shadow: 3px 3px 0 var(--navy); }

.clue-list,
.question-stack { display: grid; width: min(900px, 100%); gap: 11px; }
.clue-card { display: grid; grid-template-columns: 42px 1fr; min-height: 64px; align-items: center; padding: 11px 16px; gap: 13px; background: var(--paper); border: 3px solid var(--navy); border-radius: 14px; box-shadow: 3px 3px 0 rgba(16,28,58,.16); text-align: left; }
.clue-card__number { display: grid; width: 40px; height: 40px; place-items: center; background: var(--yellow); border: 2px solid var(--navy); border-radius: 50%; font-family: var(--font-display); }
.clue-card p { margin: 0; font-size: clamp(13px, 1.5vw, 18px); font-weight: 750; }
.clue-card.is-revealed { background: #d8f2eb; }

/* Round completion and celebration */

.result-screen,
.game-result { position: relative; display: grid; width: min(760px, 100%); place-items: center; padding: clamp(28px, 5vw, 60px); overflow: hidden; background: var(--paper); border: 4px solid var(--navy); border-radius: 30px; box-shadow: 11px 11px 0 rgba(16,28,58,.2); text-align: center; }
.result-screen::before,
.game-result::before { content: "✦   +   ○   △   ✦"; position: absolute; top: 15px; color: rgba(16,28,58,.1); font-size: clamp(32px, 6vw, 70px); letter-spacing: .3em; transform: rotate(-5deg); }
.result-icon,
.result-medal { position: relative; display: grid; width: clamp(100px, 15vw, 150px); aspect-ratio: 1; margin-bottom: 22px; place-items: center; background: var(--yellow); border: 5px solid var(--navy); border-radius: 50%; box-shadow: 7px 7px 0 var(--coral); font-size: clamp(44px, 7vw, 72px); animation: medal-in .65s var(--ease-out) both; }
@keyframes medal-in { from { transform: scale(.3) rotate(-30deg); } 60% { transform: scale(1.12) rotate(7deg); } }
.result-screen h2,
.game-result h2 { position: relative; margin-bottom: 8px; font-family: var(--font-display); font-size: clamp(31px, 5vw, 55px); letter-spacing: -.045em; }
.result-screen > p,
.game-result > p { position: relative; color: var(--ink-soft); font-size: clamp(14px, 1.8vw, 20px); }
.result-stats { display: grid; grid-template-columns: repeat(3, 1fr); width: 100%; margin: 18px 0 26px; gap: 10px; }
.result-stat { padding: 13px 8px; background: var(--cream); border: 2px solid var(--navy); border-radius: 13px; }
.result-stat strong { display: block; font-family: var(--font-display); font-size: clamp(24px, 3.4vw, 40px); line-height: 1; }
.result-stat small { color: var(--ink-soft); font-size: 9px; font-weight: 900; letter-spacing: .08em; text-transform: uppercase; }
.result-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; }

.confetti { position: fixed; z-index: 2500; inset: 0; overflow: hidden; pointer-events: none; }
.confetti-piece { position: absolute; top: -30px; left: var(--x, 50%); width: 13px; height: 23px; background: var(--confetti-color, var(--coral)); border: 1px solid var(--navy); animation: confetti-fall var(--fall-duration, 2.8s) linear var(--delay, 0s) forwards; }
@keyframes confetti-fall { to { transform: translate(var(--drift, 40px), 110vh) rotate(720deg); } }

.hint-box,
.explanation-box { max-width: 920px; margin: 18px auto 0; padding: 15px 18px; color: var(--navy); background: var(--yellow-soft); border: 3px dashed var(--navy); border-radius: 14px; font-size: clamp(13px, 1.4vw, 17px); font-weight: 750; text-align: left; }
.hint-box strong,
.explanation-box strong { display: inline-block; margin-right: 6px; }

/* Runtime renderer compatibility */

.game-card--coral { --card-accent: var(--coral); }
.game-card--yellow { --card-accent: var(--yellow); }
.game-card--teal { --card-accent: var(--teal); }
.game-card--blue { --card-accent: var(--blue); }

.game-card__button {
  display: flex;
  width: 100%;
  min-height: 100%;
  padding: 0;
  flex: 1;
  flex-direction: column;
  color: inherit;
  background: transparent;
  text-align: left;
}

.game-card__button:focus-visible { outline: 0; }
.game-card__button > * { width: 100%; }
.game-card__doodle { position: absolute; z-index: 2; right: 17px; bottom: 8px; display: grid; width: 42px; height: 42px; place-items: center; color: var(--paper); background: var(--navy); border: 2px solid var(--paper); border-radius: 50%; font-family: var(--font-display); font-size: 16px; transform: rotate(7deg); }
.game-card__meta > span { display: inline-flex; min-height: 23px; align-items: center; padding: 4px 8px; background: var(--cream); border: 1.5px solid var(--navy); border-radius: 999px; font-size: 8px; font-weight: 950; letter-spacing: .045em; text-transform: uppercase; }
.game-card__meta > span:first-child { background: var(--card-accent); }
.game-card__topic { display: block; overflow: hidden; margin: -1px 0 8px; color: var(--coral-dark); font-size: 11px; font-weight: 900; text-overflow: ellipsis; white-space: nowrap; }
.game-card__mechanic { display: grid; grid-template-columns: auto minmax(0, 1fr); min-height: 52px; align-items: center; margin: 2px 0 11px; padding: 8px 10px; gap: 9px; background: color-mix(in srgb, var(--card-accent) 28%, var(--paper)); border: 2px solid var(--navy); border-radius: 12px; box-shadow: 2px 2px 0 rgba(16, 28, 58, .16); }
.game-card__mechanic > b { display: grid; width: 34px; height: 34px; place-items: center; background: var(--paper); border: 2px solid var(--navy); border-radius: 9px; font-size: 17px; }
.game-card__mechanic > span { display: grid; min-width: 0; gap: 1px; }
.game-card__mechanic strong { overflow: hidden; font-size: 11px; font-weight: 950; text-overflow: ellipsis; white-space: nowrap; }
.game-card__mechanic small { overflow: hidden; color: var(--ink-soft); font-size: 9px; font-weight: 750; text-overflow: ellipsis; white-space: nowrap; }
.game-card__description { display: -webkit-box !important; }
.game-card__play b { margin-left: 4px; font-size: 18px; }
.card-stars { display: inline-flex; gap: 2px; }
.card-stars i { color: #bcb9b1; font-size: 16px; font-style: normal; }
.card-stars i.is-earned { color: var(--yellow); -webkit-text-stroke: 1px var(--navy); }
.game-card.is-played::after { content: "OYNANDI"; position: absolute; z-index: 5; top: 12px; left: -28px; width: 112px; padding: 4px; color: var(--paper); background: var(--navy); border: 1px solid var(--paper); font-size: 8px; font-weight: 950; letter-spacing: .1em; text-align: center; transform: rotate(-39deg); }

.topic-group__header {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  margin-bottom: 18px;
  padding-bottom: 13px;
  gap: 15px;
  border-bottom: 3px solid var(--navy);
}
.topic-group__header h2 { margin: 0 0 2px; font-family: var(--font-display); font-size: clamp(25px, 2.8vw, 39px); letter-spacing: -.04em; }
.topic-group__header p { max-width: 680px; margin: 0; color: var(--ink-soft); font-size: 13px; font-weight: 700; }
.topic-group__icon { display: grid; width: 58px; height: 58px; place-items: center; background: var(--yellow); border: 3px solid var(--navy); border-radius: 15px; box-shadow: 3px 3px 0 var(--navy); font-family: var(--font-display); font-size: 24px; transform: rotate(-2deg); }
.topic-group--coral .topic-group__icon { background: var(--coral); }
.topic-group--teal .topic-group__icon { background: var(--teal); }
.topic-group--blue .topic-group__icon { background: var(--blue); }
.topic-groups.is-compact .game-grid { grid-template-columns: repeat(2, 1fr); }
.topic-groups.is-compact .game-card { min-height: 190px; }
.topic-groups.is-compact .game-card__button { display: grid; grid-template-columns: 160px minmax(0, 1fr); }
.topic-groups.is-compact .game-card__art { min-height: 100%; border-right: 3px solid var(--navy); border-bottom: 0; }

.choice-cards--four { grid-template-columns: repeat(4, 1fr); }
.difficulty-options { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.difficulty-option { position: relative; display: grid; grid-template-columns: auto 1fr; min-height: 88px; align-items: center; padding: 13px; gap: 11px; background: var(--cream); border: 3px solid transparent; border-radius: 14px; cursor: pointer; }
.difficulty-option:has(input:checked) { background: #d8f2eb; border-color: var(--navy); box-shadow: 3px 3px 0 var(--navy); }
.difficulty-option input { position: absolute; width: 1px; height: 1px; opacity: 0; }
.difficulty-option > span { display: grid; grid-row: 1 / 3; width: 47px; height: 47px; place-items: center; background: var(--paper); border: 2px solid var(--navy); border-radius: 12px; font-size: 22px; }
.difficulty-option strong { align-self: end; font-size: 13px; }
.difficulty-option small { align-self: start; color: var(--ink-soft); font-size: 9px; line-height: 1.2; }

.score-team { position: relative; display: grid; grid-template-columns: minmax(90px, auto) auto; min-width: 225px; align-items: center; padding: 5px 15px 5px 18px; gap: 4px 15px; background: var(--paper); border: 2px solid var(--navy); border-left: 10px solid var(--blue); border-radius: 11px; }
.competitive-score-row { display: flex; width: 100%; align-items: center; justify-content: center; gap: 8px; }
.score-team > small { grid-column: 1 / -1; color: var(--ink-soft); font-size: 9px; font-weight: 900; text-align: right; text-transform: uppercase; }
.tug-meter { display: grid; grid-template-columns: auto minmax(150px, 420px) auto; width: min(570px, 100%); align-items: center; padding: 0 8px; gap: 8px; font-size: 8px; font-weight: 950; letter-spacing: .08em; }
.tug-meter > div { position: relative; height: 10px; background: linear-gradient(90deg, var(--blue) 0 49%, var(--coral) 51% 100%); border: 2px solid var(--navy); border-radius: 999px; }
.tug-meter i { position: absolute; top: 50%; color: var(--yellow); font-size: 18px; font-style: normal; -webkit-text-stroke: 1px var(--navy); transform: translate(-50%, -50%); transition: left .35s var(--ease-out); }
.relay-label { width: 100%; margin: -2px 0 0; color: var(--ink-soft); font-size: 9px; font-weight: 950; letter-spacing: .08em; text-align: center; text-transform: uppercase; }
.class-energy { position: relative; width: min(440px, 100%); height: 15px; overflow: hidden; align-self: center; background: var(--paper); border: 2px solid var(--navy); border-radius: 999px; }
.class-energy > i { display: block; height: 100%; background: linear-gradient(90deg, var(--teal), var(--yellow)); border-right: 2px solid var(--navy); transition: width .35s var(--ease-out); }
.class-energy > span { position: absolute; inset: 50% auto auto 50%; color: var(--navy); font-size: 7px; font-weight: 950; transform: translate(-50%, -50%); }
.score-team--coral { border-left-color: var(--coral); }
.score-team > strong { overflow: hidden; align-self: end; font-size: 12px; text-overflow: ellipsis; white-space: nowrap; }
.score-team > b { grid-row: 1 / 3; grid-column: 2; font-family: var(--font-display); font-size: 27px; }
.score-team__turn { align-self: start; color: var(--ink-soft); font-size: 7px; font-weight: 950; letter-spacing: .1em; }
.score-team.is-active { background: var(--yellow-soft); box-shadow: inset 0 0 0 2px var(--yellow); }
.versus-chip { display: grid; width: 42px; height: 42px; place-items: center; align-self: center; color: var(--paper); background: var(--navy); border: 2px solid var(--paper); border-radius: 50%; font-family: var(--font-display); font-size: 10px; }
.solo-score,
.class-score { display: flex; width: min(660px, 100%); min-height: 49px; align-items: center; justify-content: space-between; padding: 7px 18px; gap: 15px; background: var(--paper); border: 2px solid var(--navy); border-radius: 11px; }
.solo-score > strong,
.class-score > b { font-family: var(--font-display); font-size: 22px; }
.solo-score > span { color: var(--ink-soft); font-size: 11px; font-weight: 800; }
.solo-score > span b { color: var(--navy); font-size: 15px; }
.class-score__hearts { display: flex; gap: 4px; }
.class-score__hearts i { color: #c8c5bf; font-size: 19px; font-style: normal; -webkit-text-stroke: 1px var(--navy); }
.class-score__hearts i.is-full { color: var(--coral); }
.boss-meter { display: grid; grid-template-columns: auto minmax(150px, 1fr) auto; width: min(480px, 100%); min-height: 49px; align-items: center; padding: 6px 13px; gap: 10px; background: #d8e4fb; border: 2px solid var(--navy); border-radius: 11px; }
.boss-meter > span { font-size: 25px; }
.boss-meter > div { display: grid; gap: 3px; }
.boss-meter strong { overflow: hidden; font-size: 10px; text-overflow: ellipsis; white-space: nowrap; }
.boss-meter > b { font-family: var(--font-display); font-size: 16px; }
.boss-meter__track { display: block; height: 9px; overflow: hidden; background: var(--paper); border: 1.5px solid var(--navy); border-radius: 999px; }
.boss-meter__track i { display: block; height: 100%; background: var(--coral); border-right: 1px solid var(--navy); transition: width .25s var(--ease-out); }

.question-card {
  width: min(1180px, 100%);
  margin: auto;
  text-align: center;
}
.question-card--coordinate,
.question-card--spinner,
.question-card--bingo { width: min(1360px, 100%); }
.question-card--signature,
.question-card--mission { width: min(1360px, 100%); padding: 0; background: transparent; border: 0; border-radius: 0; box-shadow: none; }
.question-card--signature::before,
.question-card--mission::before { display: none; }
.question-card--arcade:not(.question-card--signature) { padding: clamp(14px, 2vw, 24px); }
.question-card--arcade:not(.question-card--signature) .question-copy { margin-bottom: 12px; }
.question-card--arcade:not(.question-card--signature) .question-copy h2 { font-size: clamp(24px, 3vw, 41px); }
.question-card--arcade:not(.question-card--signature) .question-experience { min-height: 25px; margin-bottom: 7px; padding: 3px 9px; font-size: 8px; }
body .question-card--arcade .mw-arcade__instruction { min-height: 38px; margin-bottom: 6px; padding: 5px 9px; font-size: clamp(12px, 1.4vw, 15px); }
body .question-card--arcade .mw-angle__svg { max-height: 220px; }
body .question-card--arcade .mw-angle__readout { margin-bottom: 5px; padding: 3px 8px; font-size: clamp(18px, 2.5vw, 27px); }
body .question-card--arcade .mw-arcade__actions { margin-top: 7px; }
body .question-card--arcade .mw-arcade__status:empty { display: none; }

@media (orientation: landscape) and (max-height: 820px) {
  .game-stage { padding-top: 12px; padding-bottom: 12px; }
  .question-card--arcade:not(.question-card--signature) { padding-top: 12px; padding-bottom: 12px; }
  .question-card--arcade:not(.question-card--signature) .question-copy { margin-bottom: 8px; }
  .question-card--arcade:not(.question-card--signature) .question-copy h2 { font-size: clamp(23px, 2.6vw, 35px); }
  body .question-card--arcade .mw-angle__panel { padding: 6px 10px; }
  body .question-card--arcade .mw-angle__svg { max-height: 168px; }
  body .question-card--arcade .mw-angle__range { margin: 2px auto; }
  body .question-card--arcade .mw-arcade__button { min-height: 44px; padding-top: 6px; padding-bottom: 6px; }
}
.question-copy { max-width: 1050px; margin: 0 auto clamp(20px, 3vw, 34px); }
.question-copy h2 { margin: 0; font-family: var(--font-display); font-size: clamp(27px, 4vw, 58px); line-height: 1.1; letter-spacing: -.04em; }
.question-copy > p:last-child:not(.question-kicker) { margin: 8px 0 0; color: var(--ink-soft); font-size: clamp(13px, 1.5vw, 18px); font-weight: 700; }
.question-kicker { margin-bottom: 8px; color: var(--coral-dark); font-size: 10px; font-weight: 950; letter-spacing: .14em; text-transform: uppercase; }
.question-experience { display: inline-flex; min-height: 31px; align-items: center; justify-content: center; margin: 0 auto 12px; padding: 5px 11px; gap: 6px; background: #d8f2eb; border: 2px solid var(--navy); border-radius: 999px; font-size: 10px; font-weight: 950; letter-spacing: .04em; text-transform: uppercase; }
.question-experience b { color: var(--coral-dark); }
.turn-banner { display: inline-flex; min-height: 38px; align-items: center; margin: -10px auto 15px; padding: 7px 14px; gap: 7px; background: var(--yellow); border: 2px solid var(--navy); border-radius: 999px; font-size: 12px; font-weight: 900; }
.turn-banner span { color: var(--coral); }
.question-interaction { width: 100%; }

.answer-option {
  position: relative;
  display: grid;
  grid-template-columns: 40px 1fr;
  min-height: clamp(70px, 9vh, 100px);
  align-items: center;
  padding: 12px 18px 12px 11px;
  gap: 12px;
  color: var(--navy);
  background: var(--cream);
  border: 3px solid var(--navy);
  border-radius: 17px;
  box-shadow: 4px 4px 0 var(--navy);
  text-align: left;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
}
.answer-option:nth-child(4n + 1) { background: #ffd9d4; }
.answer-option:nth-child(4n + 2) { background: #ffecab; }
.answer-option:nth-child(4n + 3) { background: #c7efe8; }
.answer-option:nth-child(4n) { background: #d8e4fb; }
.answer-option:hover { transform: translate(-2px, -3px); box-shadow: 7px 8px 0 var(--navy); }
.answer-option:active { transform: translate(3px, 3px); box-shadow: 1px 1px 0 var(--navy); }
.answer-option.is-correct { color: var(--paper); background: var(--green); }
.answer-option.is-wrong { color: var(--paper); background: var(--red); animation: wrong-shake .35s ease; }
.answer-option__letter { display: grid; width: 40px; height: 40px; place-items: center; color: var(--paper); background: var(--navy); border-radius: 11px; font-family: var(--font-display); font-size: 14px; }
.answer-option strong { font-family: var(--font-display); font-size: clamp(17px, 2.3vw, 30px); line-height: 1.15; text-align: center; }

.math-visual { width: fit-content; max-width: 100%; margin: 0 auto clamp(22px, 3vw, 34px); }
.math-visual--equation,
.math-visual--text { padding: 15px 25px; background: var(--yellow-soft); border: 3px solid var(--navy); border-radius: 17px; box-shadow: 4px 4px 0 var(--navy); font-family: var(--font-display); font-size: clamp(30px, 5vw, 69px); line-height: 1.1; }
.fraction-visual { display: inline-grid; grid-template-rows: 1fr 1fr; min-width: 110px; margin: 0 auto 28px; padding: 9px 20px; background: var(--paper); border: 4px solid var(--navy); border-radius: 16px; box-shadow: 5px 5px 0 var(--coral); font-family: var(--font-display); font-size: clamp(32px, 5vw, 59px); line-height: 1; }
.fraction-visual span:first-child { padding-bottom: 7px; border-bottom: 4px solid var(--navy); }
.fraction-visual span:last-child { padding-top: 7px; }
.angle-visual { width: min(380px, 75vw); margin: 0 auto 25px; padding: 10px; background: var(--paper); border: 3px solid var(--navy); border-radius: 16px; }
.angle-visual line,
.angle-visual path { fill: none; stroke: var(--navy); stroke-width: 8; stroke-linecap: round; }
.angle-visual path { stroke: var(--coral); stroke-width: 5; }
.angle-visual circle { fill: var(--yellow); stroke: var(--navy); stroke-width: 3; }
.unit-grid-wrap { display: grid; width: fit-content; margin: 0 auto 25px; place-items: center; gap: 7px; }
.unit-grid { display: grid; grid-template-columns: repeat(var(--columns), clamp(22px, 3.6vw, 45px)); grid-template-rows: repeat(var(--rows), clamp(22px, 3.6vw, 45px)); overflow: hidden; background: var(--navy); border: 4px solid var(--navy); border-radius: 10px; gap: 2px; }
.unit-grid span { background: var(--yellow-soft); }
.unit-grid span:nth-child(3n) { background: #bcebe3; }
.unit-grid-wrap p { margin: 0; font-weight: 900; }
.shape-visual { display: grid; width: clamp(130px, 20vw, 230px); aspect-ratio: 1; margin: 0 auto 24px; place-items: center; color: var(--navy); background: var(--teal); border: 5px solid var(--navy); border-radius: 18px; box-shadow: 7px 7px 0 rgba(16,28,58,.18); font-size: clamp(54px, 9vw, 105px); }
.cube-stack { display: flex; width: min(520px, 100%); min-height: 170px; align-items: end; justify-content: center; flex-wrap: wrap-reverse; margin: 0 auto 25px; gap: 3px; }
.cube-stack span { width: clamp(45px, 7vw, 72px); aspect-ratio: 1; background: var(--blue); border: 3px solid var(--navy); box-shadow: inset -8px -8px 0 rgba(16,28,58,.18); transform: translateY(calc((var(--i) % 2) * -20px)) rotate(calc((var(--i) % 3 - 1) * 2deg)); }

.input-answer { display: flex; width: min(450px, 100%); min-height: 78px; align-items: stretch; margin: 0 auto 12px; }
.input-answer output { display: grid; min-width: 0; place-items: center; padding: 8px 20px; flex: 1; background: var(--white); border: 4px solid var(--navy); border-radius: 16px 0 0 16px; font-family: var(--font-display); font-size: clamp(28px, 4vw, 46px); }
.input-answer > span { display: grid; min-width: 72px; place-items: center; padding: 8px; background: var(--yellow); border: 4px solid var(--navy); border-left: 0; border-radius: 0 16px 16px 0; font-weight: 950; }
.input-answer output:only-child { border-radius: 16px; }
.number-pad__clear { grid-column: span 2; background: #ffd7d2 !important; font-family: var(--font-sans) !important; font-size: 14px !important; }
.number-pad__submit { grid-column: span 3; color: var(--paper); background: var(--navy) !important; font-family: var(--font-sans) !important; font-size: 14px !important; }

.sort-workspace { display: grid; width: min(980px, 100%); margin: auto; gap: 18px; }
.sort-source { display: flex; min-height: 105px; align-items: center; justify-content: center; flex-wrap: wrap; padding: 16px; gap: 11px; background: #e5dfd3; border: 3px dashed var(--navy); border-radius: 17px; }
.sort-card { grid-template-columns: 1fr auto; gap: 8px; }
.sort-card small { display: grid; width: 25px; height: 25px; place-items: center; color: var(--paper); background: var(--navy); border-radius: 50%; font-family: var(--font-sans); font-size: 9px; }
.sort-target { padding: 14px; background: var(--paper); border: 3px solid var(--navy); border-radius: 17px; }
.sort-target > p { margin: 0 0 10px; color: var(--ink-soft); font-size: 10px; font-weight: 950; letter-spacing: .1em; text-transform: uppercase; }
.sort-target > div { display: flex; min-height: 90px; align-items: center; justify-content: center; flex-wrap: wrap; gap: 10px; }
.sort-card.is-placed { background: var(--yellow-soft); }

.memory-card.is-open,
.memory-card.is-matched { transform: rotateY(180deg); }
.memory-card__back { position: absolute; inset: 0; color: var(--paper); background-color: var(--navy); background-image: radial-gradient(rgba(255,255,255,.14) 2px, transparent 2px); background-size: 18px 18px; transform: none; }
.memory-card__front { position: absolute; inset: 0; color: var(--navy); background: var(--paper); transform: rotateY(180deg); }
.memory-card__front::after { content: none; }
.memory-card.is-matched .memory-card__front { background: #bfe9ce; box-shadow: inset 0 0 0 5px var(--green); }

.classify-card { display: grid; width: min(420px, 90%); min-height: 120px; margin: 0 auto 22px; place-items: center; padding: 18px; background: var(--yellow); border: 4px solid var(--navy); border-radius: 20px; box-shadow: 6px 6px 0 var(--navy); font-family: var(--font-display); font-size: clamp(24px, 4vw, 46px); }
.category-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); width: min(900px, 100%); margin: auto; gap: 13px; }
.category-grid button { display: grid; grid-template-columns: auto 1fr; min-height: 85px; align-items: center; padding: 13px; gap: 10px; background: var(--paper); border: 3px solid var(--navy); border-radius: 15px; box-shadow: 4px 4px 0 var(--navy); }
.category-grid button:nth-child(2) { background: #d2f1ec; }
.category-grid button:nth-child(3) { background: #dbe5fa; }
.category-grid button.is-correct { color: var(--paper); background: var(--green); }
.category-grid button.is-wrong { color: var(--paper); background: var(--red); animation: wrong-shake .35s ease; }
.category-grid button > span { display: grid; width: 42px; height: 42px; place-items: center; background: var(--yellow); border: 2px solid var(--navy); border-radius: 11px; font-size: 21px; }
.category-grid button strong { font-family: var(--font-display); font-size: clamp(15px, 2vw, 24px); }

.balance-scale__beam { position: absolute; top: 28%; left: 50%; width: 78%; height: 20px; background: var(--coral); border: 4px solid var(--navy); border-radius: 12px; box-shadow: 0 4px 0 rgba(16,28,58,.2); transform: translateX(-50%) rotate(var(--balance-angle, 0deg)); transform-origin: center; }
.balance-scale__beam > span { position: absolute; top: 50%; left: 50%; width: 50px; height: 50px; background: var(--yellow); border: 5px solid var(--navy); border-radius: 50%; transform: translate(-50%, -50%); }
.balance-scale .balance-pan { z-index: 2; padding: 70px 12px 8px; background: linear-gradient(transparent 0 68%, var(--yellow-soft) 68%); border-bottom: 4px solid var(--navy); border-radius: 0 0 50% 50%; font-family: var(--font-display); font-size: clamp(18px, 2.5vw, 31px); font-weight: 900; }

.sequence-row > span { display: grid; min-width: 82px; min-height: 76px; place-items: center; padding: 10px; background: var(--paper); border: 3px solid var(--navy); border-radius: 13px; box-shadow: 3px 3px 0 rgba(16,28,58,.18); font-family: var(--font-display); font-size: clamp(19px, 3vw, 35px); }
.sequence-row > span:has(> :only-child),
.sequence-row > span:is(:empty) { background: var(--yellow-soft); border-style: dashed; }
.sequence-row > i { align-self: center; color: var(--coral); font-size: 26px; font-style: normal; font-weight: 950; }
.build-target { width: fit-content; max-width: 100%; min-height: 62px; margin: 0 auto 18px; padding: 13px 20px; background: var(--yellow-soft); border: 3px dashed var(--navy); border-radius: 14px; font-family: var(--font-display); font-size: clamp(17px, 2.5vw, 30px); }
.token-bank { display: flex; min-height: 108px; align-items: center; justify-content: center; flex-wrap: wrap; margin-bottom: 18px; padding: 16px; gap: 11px; background: #e5dfd3; border: 3px solid var(--navy); border-radius: 17px; }
.math-token { display: grid; min-width: 70px; min-height: 59px; place-items: center; padding: 9px 15px; background: var(--paper); border: 3px solid var(--navy); border-radius: 12px; box-shadow: 3px 3px 0 var(--navy); font-family: var(--font-display); font-size: clamp(16px, 2.2vw, 28px); }
.math-token.is-selected { background: var(--teal); box-shadow: 0 0 0 5px var(--yellow), 4px 4px 0 var(--navy); transform: translateY(-3px); }

.estimate-control { display: grid; width: min(850px, 100%); margin: auto; place-items: center; gap: 16px; }
.estimate-control output { display: grid; min-width: 180px; min-height: 78px; place-items: center; padding: 10px 20px; background: var(--yellow); border: 4px solid var(--navy); border-radius: 18px; box-shadow: 5px 5px 0 var(--navy); font-family: var(--font-display); font-size: clamp(29px, 4.5vw, 51px); }
.estimate-control input[type="range"] { width: 100%; height: 42px; background: transparent; accent-color: var(--coral); cursor: ew-resize; }
.estimate-control input[type="range"]::-webkit-slider-runnable-track { height: 17px; background: var(--teal); border: 3px solid var(--navy); border-radius: 999px; }
.estimate-control input[type="range"]::-webkit-slider-thumb { width: 42px; height: 42px; margin-top: -15px; background: var(--yellow); border: 4px solid var(--navy); border-radius: 50%; box-shadow: 3px 3px 0 rgba(16,28,58,.2); appearance: none; }
.estimate-control > div { display: flex; width: 100%; justify-content: space-between; color: var(--ink-soft); font-size: 12px; font-weight: 900; }

.bar-chart__item { position: relative; display: flex; width: min(100px, 19%); height: 100%; align-items: center; justify-content: end; flex-direction: column; }
.bar-chart__item i { width: 72%; height: var(--height); min-height: 7px; background: var(--coral); border: 3px solid var(--navy); border-bottom: 0; border-radius: 10px 10px 0 0; }
.bar-chart__item:nth-child(2) i { background: var(--yellow); }
.bar-chart__item:nth-child(3) i { background: var(--teal); }
.bar-chart__item:nth-child(4) i { background: var(--blue); }
.bar-chart__value { margin-bottom: 5px; font-family: var(--font-display); font-size: clamp(13px, 1.8vw, 21px); }
.bar-chart__item > b { position: absolute; top: calc(100% + 8px); font-size: clamp(9px, 1.2vw, 13px); }

.number-line { padding: 0; background: transparent; }
.number-line__rail { position: absolute; inset: 0; background: var(--navy); border-radius: inherit; }
.number-line__tick { position: absolute; top: 50%; left: var(--position); display: grid; place-items: center; transform: translate(-50%, -50%); }
.number-line__tick i { display: block; width: 4px; height: 35px; background: var(--navy); }
.number-line__tick b { position: absolute; top: 31px; font-size: clamp(10px, 1.5vw, 17px); white-space: nowrap; }

.spinner-lab { display: grid; width: min(920px, 100%); margin: auto; place-items: center; gap: 17px; }
.probability-spinner > span { position: absolute; top: 50%; left: 50%; z-index: 3; width: 42%; font-family: var(--font-display); font-size: clamp(12px, 2vw, 22px); text-align: center; transform: translate(-50%, -50%) rotate(var(--angle)) translateY(-155%) rotate(calc(-1 * var(--angle))); }
.probability-spinner.is-spinning { animation: runtime-spin .85s cubic-bezier(.18,.73,.23,1) both; }
@keyframes runtime-spin { to { transform: rotate(1080deg); } }
.trial-results { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; }
.trial-results span { padding: 7px 11px; background: var(--paper); border: 2px solid var(--navy); border-radius: 999px; font-size: 12px; }
.spinner-answers { width: 100%; }

.coordinate-wrap { display: grid; place-items: center; gap: 12px; }
.coordinate-wrap > p { margin: 0; color: var(--ink-soft); font-size: 11px; font-weight: 850; }
.coordinate-wrap .coordinate-grid { display: grid; grid-template-columns: repeat(var(--columns), 1fr); width: min(55vh, 620px, 88vw); background-color: var(--paper); background-image: none; }
.coordinate-wrap .coordinate-point { position: relative; z-index: 3; width: auto; height: auto; min-width: 0; min-height: 0; aspect-ratio: 1; background: transparent; border: 1px solid rgba(76,130,233,.32); border-radius: 0; box-shadow: none; transform: none; }
.coordinate-wrap .coordinate-point:hover { z-index: 5; background: var(--yellow); border: 3px solid var(--navy); border-radius: 50%; transform: scale(.72); }
.coordinate-wrap .coordinate-point.is-correct { z-index: 6; background: var(--green); border: 4px solid var(--navy); border-radius: 50%; transform: scale(.78); }
.coordinate-wrap .coordinate-point.is-wrong { z-index: 6; background: var(--red); border: 4px solid var(--navy); border-radius: 50%; transform: scale(.78); }
.coordinate-wrap .coordinate-point.is-correct > span,
.coordinate-wrap .coordinate-point.is-wrong > span { background: var(--paper); opacity: 1; }
.coordinate-wrap .coordinate-point::after { content: none; }
.coordinate-wrap .coordinate-point > span { display: block; width: 9px; height: 9px; margin: auto; background: var(--blue); border: 1px solid var(--navy); border-radius: 50%; opacity: .35; }
.coordinate-wrap .coordinate-point.is-x-axis,
.coordinate-wrap .coordinate-point.is-y-axis { background: rgba(16,28,58,.08); }
.coordinate-wrap .coordinate-point small { position: absolute; z-index: 4; bottom: 1px; left: 2px; color: var(--ink-soft); font-size: 6px; }
@media (min-width: 900px) {
  .question-card--coordinate { display: grid; grid-template-columns: minmax(330px, .9fr) minmax(440px, 1.1fr); align-items: center; padding: 24px 38px; gap: 28px; }
  .question-card--coordinate .question-copy { margin: 0; }
  .question-card--coordinate .question-copy h2 { font-size: clamp(31px, 3.4vw, 51px); }
  .question-card--coordinate .question-interaction { grid-row: 1; grid-column: 2; }
  .question-card--coordinate .feedback-slot { grid-column: 1 / -1; }
  .question-card--coordinate .coordinate-grid { width: min(60vh, 480px, 48vw); }
}

.target-number { display: grid; width: clamp(110px, 16vw, 180px); aspect-ratio: 1; margin: 0 auto 27px; place-items: center; color: var(--paper); background: var(--coral); border: 7px solid var(--navy); border-radius: 50%; box-shadow: 0 9px 0 var(--navy), 0 14px 0 rgba(16,28,58,.17); font-family: var(--font-display); font-size: clamp(44px, 7vw, 81px); }
.bingo-game { display: grid; width: min(920px, 100%); margin: auto; place-items: center; gap: 16px; }
.bingo-call { display: flex; width: min(690px, 100%); min-height: 76px; align-items: center; padding: 13px 19px; gap: 14px; background: var(--yellow); border: 3px solid var(--navy); border-radius: 15px; box-shadow: 4px 4px 0 var(--navy); }
.bingo-call small { padding: 5px 8px; color: var(--paper); background: var(--navy); border-radius: 7px; font-size: 8px; font-weight: 950; white-space: nowrap; }
.bingo-call strong { font-family: var(--font-display); font-size: clamp(16px, 2.2vw, 28px); }
.bingo-board { display: grid; grid-template-columns: repeat(var(--bingo-size, 4), 1fr); width: min(610px, 100%); overflow: hidden; background: var(--navy); border: 4px solid var(--navy); border-radius: 17px; box-shadow: var(--shadow-md); gap: 3px; }
.bingo-board button { display: grid; min-height: clamp(58px, 10vh, 88px); place-items: center; padding: 7px; background: var(--paper); font-family: var(--font-display); font-size: clamp(15px, 2.2vw, 27px); }
.bingo-board button:hover { background: var(--yellow-soft); }
.bingo-board button.is-marked { color: var(--paper); background: var(--green); }
.bingo-board button.is-wrong { color: var(--paper); background: var(--red); animation: wrong-shake .35s ease; }
@media (min-width: 900px) {
  .question-card--bingo { display: grid; grid-template-columns: minmax(300px, .8fr) minmax(500px, 1.2fr); align-items: center; padding: 30px 40px; gap: 30px; }
  .question-card--bingo .question-copy { margin: 0; }
  .question-card--bingo .question-copy h2 { font-size: clamp(31px, 3.2vw, 49px); }
  .question-card--bingo .question-interaction { grid-row: 1; grid-column: 2; }
  .question-card--bingo .feedback-slot { grid-column: 1 / -1; }
  .question-card--bingo .bingo-game { gap: 10px; }
  .question-card--bingo .bingo-call { min-height: 62px; }
  .question-card--bingo .bingo-board button { min-height: clamp(52px, 7vh, 68px); }
}
.clue-game { display: grid; width: min(850px, 100%); margin: auto; place-items: center; gap: 15px; }
.clue-game .clue-list p { display: grid; grid-template-columns: 40px 1fr; width: 100%; min-height: 59px; align-items: center; margin: 0; padding: 9px 14px; gap: 12px; background: var(--paper); border: 3px solid var(--navy); border-radius: 13px; box-shadow: 3px 3px 0 rgba(16,28,58,.16); font-size: clamp(12px, 1.5vw, 17px); font-weight: 750; text-align: left; }
.clue-game .clue-list p span { display: grid; width: 38px; height: 38px; place-items: center; background: var(--yellow); border: 2px solid var(--navy); border-radius: 50%; font-family: var(--font-display); }

.inline-feedback { display: grid; grid-template-columns: auto 1fr; max-width: 900px; min-height: 68px; align-items: center; margin: 19px auto 0; padding: 11px 16px; gap: 13px; color: var(--paper); background: var(--red); border: 3px solid var(--navy); border-radius: 15px; text-align: left; }
.inline-feedback--correct { background: var(--green); }
.inline-feedback > span { display: grid; width: 40px; height: 40px; place-items: center; color: var(--navy); background: var(--paper); border: 2px solid var(--navy); border-radius: 50%; font-weight: 950; }
.inline-feedback strong { font-size: 14px; }
.inline-feedback p { margin: 2px 0 0; color: rgba(255,255,255,.86); font-size: 11px; }

.results-card { position: relative; display: grid; width: min(790px, 100%); margin: auto; place-items: center; padding: clamp(28px, 4vw, 52px); overflow: hidden; background: var(--paper); border: 4px solid var(--navy); border-radius: 30px; box-shadow: 10px 10px 0 rgba(16,28,58,.2); text-align: center; }
.results-card h2 { margin: 0 0 6px; font-family: var(--font-display); font-size: clamp(31px, 5vw, 55px); letter-spacing: -.045em; }
.results-burst { display: grid; width: clamp(90px, 13vw, 130px); aspect-ratio: 1; margin-bottom: 18px; place-items: center; background: var(--yellow); border: 5px solid var(--navy); border-radius: 50%; box-shadow: 6px 6px 0 var(--coral); font-size: clamp(43px, 7vw, 70px); animation: medal-in .65s var(--ease-out) both; }
.result-stars { display: flex; margin: 8px 0 18px; gap: 6px; }
.result-stars span { color: #c8c5be; font-size: clamp(27px, 4vw, 44px); -webkit-text-stroke: 2px var(--navy); }
.result-stars span.is-earned { color: var(--yellow); }
.final-score-row { display: grid; grid-template-columns: repeat(2, 1fr); width: 100%; margin-bottom: 13px; gap: 10px; }
.final-score-row > div { display: flex; min-height: 65px; align-items: center; justify-content: space-between; padding: 10px 15px; background: #dbe6fb; border: 2px solid var(--navy); border-radius: 12px; }
.final-score-row > div:nth-child(2) { background: #ffd9d4; }
.final-score-row span { font-size: 11px; font-weight: 900; }
.final-score-row strong { font-family: var(--font-display); font-size: 25px; }
.result-metrics { display: grid; grid-template-columns: repeat(4, 1fr); width: 100%; margin: 8px 0 16px; gap: 8px; }
.result-metrics > div { padding: 11px 7px; background: var(--cream); border: 2px solid var(--navy); border-radius: 11px; }
.result-metrics strong { display: block; font-family: var(--font-display); font-size: clamp(19px, 3vw, 31px); }
.result-metrics span { color: var(--ink-soft); font-size: 8px; font-weight: 950; letter-spacing: .06em; text-transform: uppercase; }
.result-note { display: grid; grid-template-columns: auto 1fr; width: 100%; align-items: center; padding: 12px 15px; gap: 12px; background: var(--yellow-soft); border: 2px dashed var(--navy); border-radius: 13px; text-align: left; }
.result-note > span { font-size: 26px; }
.result-note p { display: flex; margin: 0; flex-direction: column; color: var(--ink-soft); font-size: 10px; }
.result-note strong { color: var(--navy); font-size: 11px; }
.results-actions { display: flex; flex-wrap: wrap; justify-content: center; margin-top: 18px; gap: 11px; }

.toast > span:first-child { display: grid; width: 37px; height: 37px; place-items: center; color: var(--navy); background: var(--yellow); border-radius: 50%; font-weight: 950; }
.toast > p { margin: 0; font-size: 13px; font-weight: 800; }
.class-timer.is-finished { color: var(--navy); background: var(--yellow); animation: urgent-pulse .8s ease-in-out 3; }
.free-scoreboard > div { display: grid; grid-template-columns: 42px 1fr 42px; align-items: center; gap: 7px; }
.free-scoreboard button { display: grid; width: 42px; height: 42px; place-items: center; background: var(--yellow); border: 2px solid var(--navy); border-radius: 9px; font-size: 22px; }
.free-scoreboard strong { font-family: var(--font-display); font-size: 25px; text-align: center; }
.free-scoreboard span { grid-column: 1 / -1; text-align: center; font-size: 10px; font-weight: 950; }
.fatal-error { max-width: 650px; margin: 15vh auto; padding: 40px; background: var(--paper); border: 4px solid var(--navy); border-radius: 25px; box-shadow: var(--shadow-lg); text-align: center; }
.fatal-error h1 { font-family: var(--font-display); font-size: 40px; }

/* Accessibility modes */

body.high-contrast,
body.is-high-contrast,
body[data-contrast="high"] {
  --navy: #000000;
  --navy-2: #111111;
  --navy-3: #404040;
  --cream: #ffffff;
  --paper: #ffffff;
  --ink-soft: #1b1b1b;
  --line: #000000;
  --coral: #ff5545;
  --yellow: #ffd500;
  --yellow-soft: #fff09a;
  --teal: #00a88f;
  --blue: #1769e0;
  background-image: none;
}

body.high-contrast .hero,
body.high-contrast .topbar,
body.high-contrast .site-footer,
body.high-contrast .game-shell__header,
body.is-high-contrast .hero,
body.is-high-contrast .topbar,
body.is-high-contrast .site-footer,
body.is-high-contrast .game-shell__header,
body[data-contrast="high"] .hero,
body[data-contrast="high"] .topbar,
body[data-contrast="high"] .site-footer,
body[data-contrast="high"] .game-shell__header { background-image: none; }

body.high-contrast button,
body.high-contrast input,
body.high-contrast select,
body.is-high-contrast button,
body.is-high-contrast input,
body.is-high-contrast select,
body[data-contrast="high"] button,
body[data-contrast="high"] input,
body[data-contrast="high"] select { border-color: currentColor; }

body.large-text,
body.is-large-text { --touch: 58px; font-size: 19px; }
body.large-text small,
body.is-large-text small { font-size: max(.72em, 12px); }

body.reduced-motion *,
body.reduced-motion *::before,
body.reduced-motion *::after,
body.reduce-motion *,
body.reduce-motion *::before,
body.reduce-motion *::after,
body.is-reduced-motion *,
body.is-reduced-motion *::before,
body.is-reduced-motion *::after {
  scroll-behavior: auto !important;
  animation-duration: .001ms !important;
  animation-iteration-count: 1 !important;
  transition-duration: .001ms !important;
}

body.reduced-motion .view,
body.reduce-motion .view,
body.is-reduced-motion .view,
body.reduced-motion .game-shell,
body.reduce-motion .game-shell,
body.is-reduced-motion .game-shell,
body.reduced-motion .overlay__backdrop,
body.reduce-motion .overlay__backdrop,
body.is-reduced-motion .overlay__backdrop,
body.reduced-motion .modal,
body.reduce-motion .modal,
body.is-reduced-motion .modal { animation: none !important; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    scroll-behavior: auto !important;
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
}

@media (forced-colors: active) {
  * { forced-color-adjust: auto; }
  .brand__mark,
  .game-card__art,
  .game-card__visual,
  .hero__playground { border: 3px solid CanvasText; }
  .progress-fill,
  .game-progress__fill { background: Highlight; }
}

/* Responsive smart-board and tablet layouts */

@media (min-width: 1700px) {
  :root { --content-max: 1680px; --header-height: 98px; }
  body { font-size: 18px; }
  .topbar { grid-template-columns: 270px 1fr 270px; }
  .grade-tab { min-width: 94px; min-height: 60px; }
  .grade-tab--mixed { min-width: 126px; }
  .game-card { min-height: 410px; }
  .game-card__art,
  .game-card__visual,
  .game-card__thumb { min-height: 180px; }
}

@media (max-width: 1320px) {
  .topbar { grid-template-columns: minmax(190px, auto) minmax(410px, 1fr) auto; }
  .grade-nav { gap: 5px; }
  .grade-tab { min-width: 69px; padding-right: 10px; padding-left: 10px; }
  .grade-tab--mixed { min-width: 94px; }
  .game-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .game-grid--featured { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .mode-card { grid-template-columns: 70px 1fr auto; padding: 23px 18px; gap: 15px; }
  .mode-card__icon { width: 68px; height: 68px; font-size: 39px; }
  .mode-card__copy small { font-size: 12px; }
  .filter-controls .select-field { min-width: 158px; }
}

@media (max-width: 1120px) {
  .topbar { grid-template-columns: 178px minmax(390px, 1fr) auto; }
  .brand__mark { width: 49px; height: 49px; }
  .brand__pi { font-size: 33px; }
  .brand__copy strong { font-size: 17px; }
  .brand__copy span { font-size: 10px; }
  .icon-button { min-width: 50px; }
  .icon-button__label { display: none; }
  .hero { grid-template-columns: minmax(0, 1.03fr) minmax(370px, .97fr); }
  .hero__copy { padding-right: 38px; padding-left: 45px; }
  .hero__playground { padding: 38px; }
  .hero-stat { grid-template-columns: 1fr; gap: 4px; }
  .curriculum-callout { grid-template-columns: auto 1fr; }
  .curriculum-callout .button { grid-column: 2; width: fit-content; }
  .catalog-toolbar { position: relative; top: auto; grid-template-columns: 1fr; }
  .filter-controls { display: grid; grid-template-columns: 1fr 1fr auto; }
  .filter-controls .select-field { min-width: 0; }
}

@media (max-width: 940px) {
  :root { --header-height: 145px; }
  .topbar {
    grid-template-areas:
      "brand actions"
      "grades grades";
    grid-template-columns: 1fr auto;
    grid-template-rows: 66px 64px;
    padding: 6px 16px 10px;
  }
  .brand { grid-area: brand; }
  .grade-nav { grid-area: grades; justify-content: stretch; }
  .grade-tab { min-width: 0; flex: 1 1 0; }
  .grade-tab--mixed { flex-grow: 1.25; }
  .topbar__actions { grid-area: actions; }
  .hero { grid-template-columns: 1fr; min-height: 0; }
  .hero__copy { min-height: 500px; padding: 55px; }
  .hero__playground { min-height: 470px; border-top: 4px solid var(--navy); border-left: 0; clip-path: none; }
  .hero-board { width: min(540px, 88%); }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .hero-stat:nth-child(2) { border-right: 0; }
  .hero-stat:nth-child(-n+2) { border-bottom: 2px dashed rgba(16,28,58,.25); }
  .hero-stat--note { border-radius: 0 0 15px 0; }
  .mode-cards { grid-template-columns: 1fr; max-width: 740px; margin: 0 auto; }
  .mode-card { grid-template-columns: 88px 1fr auto; min-height: 150px; }
  .mode-card__icon { width: 82px; height: 82px; }
  .mode-card__copy small { font-size: 14px; }
  .game-grid--featured,
  .game-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .catalog-hero { min-height: 190px; }
  .game-shell__header { grid-template-columns: 1fr auto; }
  .game-shell__status { grid-row: 2; grid-column: 1 / -1; }
  .game-shell__actions { grid-column: 2; grid-row: 1; }
  .game-shell__header { min-height: 130px; }
  .spinner-game,
  .spinner-layout,
  .coordinate-layout,
  .bingo-layout { grid-template-columns: 1fr; }
  .spinner-wrap { width: min(330px, 63vw); }
  .coordinate-grid,
  .coordinate-plane { width: min(55vh, 590px, 90vw); }
  .bingo-draw { grid-template-columns: auto 1fr; gap: 22px; }
  .bingo-ball { width: 150px; }
}

@media (max-width: 700px) {
  :root { --header-height: 138px; --radius-xl: 28px; }
  .topbar { grid-template-rows: 62px 60px; }
  .brand { min-height: 54px; }
  .brand__mark { width: 46px; height: 46px; box-shadow: 3px 3px 0 var(--coral); }
  .brand__copy strong { font-size: 15px; }
  .brand__copy span { font-size: 8px; }
  .icon-button { min-width: 46px; min-height: 48px; padding: 6px; }
  .grade-tab { min-height: 51px; padding: 6px 4px; border-radius: 12px; }
  .grade-tab__number { font-size: 21px; }
  .grade-tab__label { display: none; }
  .grade-tab--mixed { grid-template-columns: auto auto; }
  .hero-wrap { padding: 12px 10px 0; }
  .hero { border-radius: 26px; box-shadow: 7px 7px 0 rgba(16,28,58,.19); }
  .hero__copy { min-height: 475px; padding: 38px 26px; }
  .hero h1 { font-size: clamp(47px, 14vw, 72px); }
  .hero__actions { display: grid; width: 100%; }
  .hero__actions .button { width: 100%; }
  .hero__playground { min-height: 380px; padding: 26px 13px 35px; }
  .hero-board { width: 92%; padding: 22px 17px; }
  .doodle { transform: scale(.72); }
  .hero-stats { max-width: calc(100% - 16px); }
  .hero-stat { min-height: 78px; padding: 12px; }
  .hero-stat dt { font-size: 29px; }
  .hero-stat dd { font-size: 10px; }
  .home-section { padding-right: 14px; padding-left: 14px; }
  .section-heading--row { align-items: start; flex-direction: column; }
  .mode-card { grid-template-columns: 64px 1fr auto; min-height: 145px; padding: 20px 15px; gap: 12px; }
  .mode-card__icon { width: 61px; height: 61px; font-size: 34px; }
  .mode-card__copy strong { font-size: 21px; }
  .mode-card__copy small { font-size: 11px; }
  .mode-card__arrow { width: 36px; height: 36px; }
  .curriculum-callout { grid-template-columns: 1fr; text-align: center; }
  .curriculum-callout__stamp { margin: 0 auto; }
  .curriculum-callout .button { grid-column: 1; width: 100%; }
  .site-footer { align-items: flex-start; flex-direction: column; justify-content: center; gap: 5px; }
  .view--catalog { padding: 12px 10px 70px; }
  .catalog-hero { min-height: 230px; padding: 25px 22px; }
  .catalog-hero__badge { width: 86px; height: 86px; }
  .catalog-hero__badge span { font-size: 25px; }
  .catalog-toolbar { padding: 9px; border-radius: 16px; }
  .filter-controls { grid-template-columns: 1fr 1fr; }
  .filter-reset { grid-column: 1 / -1; min-height: 49px; }
  .topic-group__heading,
  .topic-group__header,
  .topic-header { align-items: start; flex-direction: column; gap: 7px; }
  .topic-group__header { grid-template-columns: auto minmax(0, 1fr); }
  .topic-group__header .topic-group__count { grid-column: 2; justify-self: start; }
  .game-grid,
  .game-grid--featured { grid-template-columns: 1fr; }
  .game-card { min-height: 330px; }
  .game-grid.is-compact { grid-template-columns: 1fr; }
  .game-grid.is-compact .game-card { grid-template-columns: 125px 1fr; }
  .topic-groups.is-compact .game-grid { grid-template-columns: 1fr; }
  .topic-groups.is-compact .game-card { min-height: 190px; }
  .topic-groups.is-compact .game-card__button { grid-template-columns: 125px minmax(0, 1fr); }
  .topic-groups.is-compact .game-card__art { min-height: 100%; }
  .choice-cards { grid-template-columns: 1fr; }
  .choice-card { min-height: 83px; }
  .setup-grid,
  .team-fields { grid-template-columns: 1fr; }
  .modal__actions { align-items: stretch; flex-direction: column-reverse; }
  .modal__actions .button { width: 100%; }
  .game-shell__header { min-height: 116px; padding: 7px 10px; gap: 6px 10px; }
  .game-close { min-width: 53px; padding: 7px; }
  .game-close span:last-child { display: none; }
  .game-shell__identity { gap: 8px; }
  .game-shell__meta { display: none; }
  .game-shell__actions { gap: 4px; }
  .round-button { width: 44px; height: 44px; }
  .status-chip { min-height: 41px; padding: 4px 10px; }
  .game-shell__footer { min-height: 67px; }
  .game-stage { padding: 14px 10px; }
  .arena-card,
  .question-card,
  .challenge-card { padding: 25px 14px; border-width: 3px; }
  .answers-grid--3,
  .answers-grid--4,
  .choices-grid--3,
  .choices-grid--4 { grid-template-columns: repeat(2, 1fr); }
  .answer-form,
  .numeric-answer { flex-direction: column; }
  .submit-answer { min-height: 58px; }
  .game-scoreboard,
  .scoreboard,
  .score-board { overflow-x: auto; justify-content: start; }
  .score-card,
  .player-score,
  .team-score { min-width: 145px; }
  .split-arena,
  .duel-arena,
  .two-player-arena { grid-template-columns: 1fr; }
  .player-panel,
  .duel-panel { min-height: 330px; }
  .player-panel + .player-panel,
  .duel-panel + .duel-panel { border-top: 4px solid var(--navy); border-left: 0; }
  .memory-grid,
  .matching-grid { --memory-cols: 3; }
  .match-columns { grid-template-columns: 1fr 1fr; gap: 10px; }
  .match-lines { display: none; }
  .sort-zones,
  .drop-zones,
  .classify-grid,
  .category-zones { grid-template-columns: 1fr; }
  .balance-scale { transform: scale(.85); transform-origin: center; }
  .result-stats { grid-template-columns: 1fr; }
  .result-metrics { grid-template-columns: repeat(2, 1fr); }
  .result-actions { width: 100%; }
  .result-actions .button { width: 100%; }
  .results-actions { width: 100%; }
  .results-actions .button { width: 100%; }
}

@media (max-width: 430px) {
  .brand__copy { display: none; }
  .grade-tab--mixed { grid-template-columns: 1fr; }
  .grade-tab__mixed-icon { display: none; }
  .grade-tab__mixed-label { font-size: 10px; }
  .hero-stat--note { grid-column: 1 / -1; border-radius: 0 0 15px 15px; }
  .hero-stats { grid-template-columns: repeat(3, 1fr); }
  .hero-stat { border-bottom: 2px dashed rgba(16,28,58,.25); }
  .hero-stat:nth-child(3) { border-right: 0; }
  .game-grid.is-compact .game-card { grid-template-columns: 1fr; }
  .game-grid.is-compact .game-card__art,
  .game-grid.is-compact .game-card__visual,
  .game-grid.is-compact .game-card__thumb { min-height: 130px; border-right: 0; border-bottom: 3px solid var(--navy); }
  .topic-groups.is-compact .game-card__button { grid-template-columns: 1fr; }
  .topic-groups.is-compact .game-card__art { min-height: 130px; border-right: 0; border-bottom: 3px solid var(--navy); }
  .catalog-hero__badge { display: none; }
  .catalog-hero { grid-template-columns: 1fr; }
  .filter-controls { grid-template-columns: 1fr; }
  .filter-reset { grid-column: 1; }
  .game-shell__identity h1 { max-width: 135px; }
  .game-shell__actions .round-button:first-child { display: none; }
  .answers-grid,
  .answer-grid,
  .choices-grid,
  .options-grid { grid-template-columns: 1fr; }
  .memory-grid,
  .matching-grid { --memory-cols: 2; }
  .bingo-draw { grid-template-columns: 1fr; }
}

@media (orientation: landscape) and (max-height: 720px) {
  .game-shell__header { grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr); min-height: 68px; padding-top: 5px; padding-bottom: 5px; }
  .game-shell__status { grid-row: 1; grid-column: 2; }
  .game-shell__actions { grid-column: 3; }
  .game-close { min-height: 46px; }
  .status-chip { min-height: 46px; }
  .round-button { width: 46px; height: 46px; }
  .game-shell__footer { min-height: 58px; padding-top: 6px; padding-bottom: 6px; }
  .game-stage { padding-top: 12px; padding-bottom: 12px; }
  .arena-card,
  .question-card,
  .challenge-card { padding-top: 20px; padding-bottom: 20px; }
  .question-prompt,
  .prompt,
  .challenge-prompt { margin-bottom: 18px; font-size: clamp(25px, 4vw, 48px); }
  .equation,
  .math-expression,
  .problem-expression { margin-bottom: 18px; font-size: clamp(35px, 6vw, 65px); }
  .answer-button,
  .answer-btn,
  .option-button,
  .option-btn,
  .choice-button { min-height: 62px; }
  .memory-card,
  .match-card { min-height: 84px; }
  .coordinate-grid,
  .coordinate-plane { width: min(51vh, 520px); }
  .spinner-wrap { width: min(50vh, 330px); }
}

@media (pointer: coarse) {
  button,
  select,
  input[type="checkbox"],
  input[type="radio"] { min-height: 48px; }
  .topic-chip,
  .filter-chip { min-height: 52px; }
}

@media print {
  .topbar,
  .site-footer,
  .teacher-drawer,
  .drawer-backdrop,
  .overlay,
  .toast-region { display: none !important; }
  body { color: #000; background: #fff; }
  .view { display: block !important; }
}