:root {
  --sky-top: #bfe6ff;
  --sky-bottom: #eaf8ff;
  --grass: #9bd672;
  --grass-dark: #74b94d;
  --ink: #4a3b30;
  --ink-soft: #7a6758;
  --cream: #fffaf2;
  --carrot: #f28c28;
  --carrot-dark: #cf6f14;
  --good: #4caf50;
  --pink: #f06292;
  --burrow: #a47551;
  --focus: #2f7de1;
  font-family: "Arial Rounded MT Bold", "Nunito", "Trebuchet MS", system-ui, sans-serif;
  color: var(--ink);
}

* { box-sizing: border-box; }

/* Touch screens: no double-tap zoom (kids tap Feed fast), no gray tap flash,
   and no text selection or long-press menus on the game itself. */
html {
  touch-action: manipulation;
  -webkit-text-size-adjust: 100%;
  -webkit-tap-highlight-color: transparent;
}
body {
  -webkit-user-select: none;
  user-select: none;
  -webkit-touch-callout: none;
}
input { -webkit-user-select: text; user-select: text; }

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: linear-gradient(var(--sky-top), var(--sky-bottom));
}

main {
  flex: 1;
  width: 100%;
  max-width: 960px;
  margin: 0 auto;
  padding: 0 16px 24px;
}

button { font: inherit; color: inherit; cursor: pointer; }
button:disabled { cursor: default; }
:focus-visible { outline: 4px solid var(--focus); outline-offset: 3px; }

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
}

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

.topbar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 12px;
  align-items: center;
  justify-content: space-between;
  max-width: 960px;
  width: 100%;
  margin: 0 auto;
  padding: 16px;
}

.logo {
  margin: 0;
  white-space: nowrap;
  font-size: 2.2rem;
  color: var(--carrot-dark);
  text-shadow: 2px 2px 0 #fff;
}

.carrot-count {
  position: relative;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  background: var(--cream);
  border: 3px solid var(--carrot);
  border-radius: 999px;
  font-size: 1.6rem;
}
.carrot-count .carrot { width: 32px; height: 32px; display: block; }
.carrot-count.bump { animation: bump 0.45s ease-out; }

.float-plus {
  position: absolute;
  right: 12px;
  top: -6px;
  color: var(--carrot-dark);
  font-weight: bold;
  pointer-events: none;
  animation: float-up 1s ease-out forwards;
}

/* ---------- Shared pieces ---------- */

.big-button {
  padding: 14px 32px;
  font-size: 1.5rem;
  color: #fff;
  background: var(--carrot);
  border: none;
  border-radius: 18px;
  box-shadow: 0 5px 0 var(--carrot-dark);
  transition: transform 0.1s;
}
.big-button:active { transform: translateY(3px); box-shadow: 0 2px 0 var(--carrot-dark); }

.small-button {
  padding: 8px 16px;
  font-size: 1rem;
  background: var(--cream);
  border: 2px solid var(--ink-soft);
  border-radius: 12px;
}

.link-button {
  background: none;
  border: none;
  color: var(--ink-soft);
  text-decoration: underline;
  font-size: 0.9rem;
}

.card {
  background: var(--cream);
  border-radius: 28px;
  padding: 28px;
  box-shadow: 0 8px 0 rgba(74, 59, 48, 0.12);
}

.bunny svg { display: block; width: 100%; height: auto; overflow: visible; }

/* ---------- Meadow ---------- */

#meadow-screen { text-align: center; }

.field-header {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
}
.field-title h2 { margin: 0; font-size: 1.7rem; }
.met-math { margin: 2px 0 0; font-size: 1.1rem; color: var(--ink-soft); }

.nav-button {
  width: 44px;
  height: 44px;
  font-size: 1.8rem;
  line-height: 1;
  background: var(--cream);
  border: 2px solid var(--ink-soft);
  border-radius: 50%;
}
.nav-button:disabled { opacity: 0.3; cursor: default; }

.meadow-message {
  min-height: 1.5em;
  font-size: 1.3rem;
  margin: 10px 0 16px;
}

.meadow {
  --grass-top: var(--grass);
  --grass-bottom: var(--grass-dark);
  --flower: #fff6a8;
  display: grid;
  grid-template-columns: minmax(250px, 300px) 1fr;
  align-items: center;
  gap: 24px;
  padding: 28px 24px 20px;
  margin-bottom: 28px;
  background:
    radial-gradient(circle, var(--flower) 0 3px, transparent 4px) 0 0 / 96px 74px,
    radial-gradient(circle, var(--flower) 0 2px, transparent 3px) 48px 37px / 96px 74px,
    linear-gradient(var(--grass-top), var(--grass-bottom));
  border-radius: 48px 48px 28px 28px;
  box-shadow: inset 0 6px 0 rgba(255, 255, 255, 0.35);
}

.bunny-name {
  margin: 6px 0 2px;
  font-size: 1.25rem;
  color: #fff;
  text-shadow: 0 2px 0 rgba(0, 0, 0, 0.25);
}

.hearts { display: flex; justify-content: center; gap: 2px; margin-bottom: 8px; }
.heart { width: 22px; height: 22px; }

.feed-button {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  font-size: 1.1rem;
  white-space: nowrap;
  background: var(--cream);
  border: 3px solid var(--carrot);
  border-radius: 14px;
  box-shadow: 0 4px 0 var(--carrot-dark);
}
.feed-button:active:not(:disabled) { transform: translateY(3px); box-shadow: 0 1px 0 var(--carrot-dark); }
.feed-button .carrot { width: 22px; height: 22px; }
.feed-button:disabled { opacity: 0.6; border-color: var(--ink-soft); box-shadow: none; }

/* Bun Bun and the shy visitor */

.visitor-panel {
  padding: 16px 12px 18px;
  background: rgba(255, 255, 255, 0.3);
  border-radius: 24px;
}
.pair { display: flex; justify-content: center; align-items: flex-end; gap: 10px; margin-bottom: 8px; }
.guide, .visitor { width: 120px; }
.guide-bunny { width: 110px; margin: 0 auto; }

.visitor-stage {
  position: relative;
  width: 110px;
  aspect-ratio: 120 / 150;
  margin: 0 auto;
  overflow: hidden;
}
.visitor-bunny {
  transform: translateY(var(--shy, 0%));
  transition: transform 0.5s ease-out;
}
.visitor-bunny.peek { animation: peek 0.8s ease-out; }
.bush {
  position: absolute;
  left: -10%;
  bottom: 0;
  width: 120%;
  height: 34%;
}

.visitor-away p { margin: 8px 0; font-size: 1.15rem; color: #fff; text-shadow: 0 2px 0 rgba(0, 0, 0, 0.25); }
.visitor-away .guide-bunny { margin-bottom: 4px; }

/* The field: 25 spots in 5 rows of 5 */

.field-grid {
  display: grid;
  grid-template-columns: repeat(var(--columns, 5), 1fr);
  gap: 4px 10px;
  max-width: 440px;
  margin: 0 auto;
}
.field-bunny, .field-spot { aspect-ratio: 120 / 150; }
.field-bunny {
  padding: 0;
  background: none;
  border: none;
  border-radius: 12px;
}
.field-spot {
  background: radial-gradient(ellipse 34% 9% at 50% 88%, rgba(70, 45, 20, 0.28) 0 96%, transparent 100%);
}
.field-spot.next {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  color: rgba(255, 255, 255, 0.9);
  text-shadow: 0 2px 0 rgba(0, 0, 0, 0.2);
}
.field-spot.next::after { content: "?"; animation: breathe 2s ease-in-out infinite; }

.grid-caption {
  margin: 10px 0 0;
  font-size: 1.05rem;
  color: #fff;
  text-shadow: 0 2px 0 rgba(0, 0, 0, 0.25);
}

@media (max-width: 720px) {
  .meadow { grid-template-columns: 1fr; }
  .mode-picker { grid-template-columns: repeat(2, 1fr); }
}

/* ---------- Travel to a new field ---------- */

.travel {
  position: fixed;
  inset: 0;
  z-index: 10;
  display: grid;
  place-items: center;
  padding: 16px;
  background: rgba(74, 59, 48, 0.45);
}
.travel[hidden] { display: none; }

.travel-card {
  width: min(720px, 100%);
  padding: 24px;
  text-align: center;
  background: var(--cream);
  border-radius: 28px;
  box-shadow: 0 10px 0 rgba(74, 59, 48, 0.2);
  animation: pop-in 0.4s ease-out;
}
.travel-card:focus { outline: none; }
.travel-card h2 { margin: 0 0 4px; font-size: 1.8rem; }
.travel-math { margin: 0 0 16px; font-size: 1.4rem; color: var(--carrot-dark); }
.travel-message { min-height: 1.5em; margin: 16px 0; font-size: 1.25rem; }

.travel-scene {
  --hill-far: #9bd672;
  --hill-near: #74b94d;
  position: relative;
  height: 240px;
  overflow: hidden;
  background: linear-gradient(#bfe6ff, #eaf8ff);
  border-radius: 20px;
}
.travel-layer { position: absolute; left: 0; right: 0; background-repeat: repeat-x; }
.travel-clouds {
  top: 12px;
  height: 64px;
  background-image:
    radial-gradient(ellipse 46px 16px at 70px 36px, #fff 96%, transparent 100%),
    radial-gradient(ellipse 30px 12px at 240px 20px, #fff 96%, transparent 100%);
  background-size: 340px 64px;
  animation: scroll-clouds 12s linear infinite;
}
.travel-hills-far {
  bottom: 44px;
  height: 110px;
  background-image:
    radial-gradient(ellipse 50% 100% at 50% 100%, var(--hill-far) 98%, transparent 100%),
    linear-gradient(var(--hill-far), var(--hill-far));
  background-size: 260px 90px, 100% 20px;
  background-position: 0 100%, 0 100%;
  animation: scroll-far 5s linear infinite;
}
.travel-hills-near {
  bottom: 30px;
  height: 64px;
  background-image:
    radial-gradient(ellipse 50% 100% at 50% 100%, var(--hill-near) 98%, transparent 100%),
    linear-gradient(var(--hill-near), var(--hill-near));
  background-size: 180px 50px, 100% 16px;
  background-position: 0 100%, 0 100%;
  animation: scroll-near 2.4s linear infinite;
}
.travel-path {
  bottom: 0;
  height: 34px;
  background-image: repeating-linear-gradient(90deg, #ecd7ab 0 40px, #e0c796 40px 80px);
  border-top: 4px solid var(--hill-near);
  animation: scroll-path 0.8s linear infinite;
}
.travel-scene:not(.moving) .travel-layer { animation-play-state: paused; }

.travel-bunny {
  position: absolute;
  left: 50%;
  bottom: 16px;
  z-index: 2;
  width: 100px;
  margin-left: -50px;
}
.travel-scene.moving .travel-bunny svg { animation: hop 0.6s ease-out infinite; transform-origin: 50% 100%; }
.travel-scene.arrived .travel-bunny svg { animation: hop 0.7s ease-out 2; transform-origin: 50% 100%; }

.travel-sign {
  position: absolute;
  right: 28px;
  bottom: 22px;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  transform: translateX(360px);
  transition: transform 1s ease-out;
}
.travel-scene.arrived .travel-sign { transform: none; }
.travel-sign-board {
  padding: 6px 14px;
  font-size: 1.1rem;
  color: #fff;
  white-space: nowrap;
  background: #c8955e;
  border: 3px solid #6b4730;
  border-radius: 10px;
}
.travel-sign::after {
  content: "";
  width: 10px;
  height: 56px;
  background: #8d6143;
  border: 3px solid #6b4730;
  border-top: none;
}

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

.counters { display: flex; gap: 10px; }
/* Counters grow with their numbers; equal-width digits stop them wiggling as counts change. */
.met-count, .carrot-count { white-space: nowrap; font-variant-numeric: tabular-nums; }

.met-count {
  position: relative;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  background: var(--cream);
  border: 3px solid var(--pink);
  border-radius: 999px;
  font-size: 1.6rem;
}
.met-count .mini-bunny { width: 30px; height: 35px; display: block; }
.met-count.bump { animation: bump 0.45s ease-out; }

/* Phone-narrow: smaller logo and counters so the top bar still fits. */
@media (max-width: 520px) {
  .logo { font-size: 1.6rem; }
  .met-count, .carrot-count { gap: 4px; padding: 6px 12px; font-size: 1.25rem; }
  .carrot-count .carrot { width: 24px; height: 24px; }
  .met-count .mini-bunny { width: 22px; height: 26px; }
}

/* ---------- Play ---------- */

.play-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}
.round-progress { margin: 0; font-size: 1.2rem; }

.helper {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 20px;
}
.helper-bunny { width: 120px; flex-shrink: 0; }

.speech {
  position: relative;
  flex: 1;
  margin: 0;
  padding: 18px 22px;
  font-size: 1.4rem;
  line-height: 1.4;
  background: #fff;
  border: 3px solid var(--ink-soft);
  border-radius: 22px;
}
.speech::before {
  content: "";
  position: absolute;
  left: -14px;
  top: 50%;
  width: 22px;
  height: 22px;
  background: #fff;
  border-left: 3px solid var(--ink-soft);
  border-bottom: 3px solid var(--ink-soft);
  transform: translateY(-50%) rotate(45deg);
}

.helper-bunny-wrap { flex-shrink: 0; text-align: center; }
.helper-name { margin: 2px 0 0; font-size: 1rem; color: var(--ink-soft); }

.problem { display: flex; flex-direction: column; align-items: center; gap: 20px; }

.equation {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 16px;
  font-size: 4rem;
}
.equation.compact { font-size: 3rem; align-items: flex-start; }
.equation.compact > span { line-height: 1.5; }

.blank { display: flex; flex-direction: column; align-items: center; gap: 4px; }
.caption { font-size: 1rem; color: var(--ink-soft); max-width: 8em; text-align: center; }

.answer-input {
  width: calc(3ch + 32px);
  padding: 4px 8px;
  font: inherit;
  text-align: center;
  color: var(--ink);
  background: #fff;
  border: 4px solid var(--ink-soft);
  border-radius: 16px;
}
.answer-input.correct { border-color: var(--good); background: #eaf7e6; }
.answer-input.wrong { border-color: var(--pink); background: #fdecef; }
.answer-input.shake { animation: shake 0.4s; }

.actions { display: flex; justify-content: center; margin-top: 24px; }

.sentence { margin: 0; font-size: 1.6rem; text-align: center; }
.flip-row { margin: 0; }

.flip-button {
  padding: 12px 26px;
  font-size: 1.4rem;
  color: #fff;
  background: var(--good);
  border: none;
  border-radius: 16px;
  box-shadow: 0 5px 0 #37863a;
}
.flip-button:active:not(:disabled) { transform: translateY(3px); box-shadow: 0 2px 0 #37863a; }
.flip-button:disabled { opacity: 0.45; box-shadow: none; cursor: default; }

.choices {
  display: grid;
  grid-template-columns: repeat(2, minmax(160px, 1fr));
  gap: 14px;
}
.choice {
  padding: 14px 24px;
  font-size: 2rem;
  background: #fff;
  border: 4px solid var(--ink-soft);
  border-radius: 18px;
}
.choice.correct { border-color: var(--good); background: #eaf7e6; }
.choice.wrong { border-color: var(--pink); background: #fdecef; opacity: 0.6; text-decoration: line-through; }
.choice:disabled:not(.correct):not(.wrong) { opacity: 0.6; }

/* Pictures: burrows (equal groups) and carrot patches (arrays) */

.picture {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}
.picture-caption { font-size: 1.2rem; margin: 0 0 12px; text-align: center; }

.burrows {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}
.burrow-slot { display: flex; flex-direction: column; align-items: center; gap: 4px; }
.burrow {
  display: grid;
  grid-template-columns: repeat(5, 30px);
  gap: 3px;
  min-height: 48px;
  align-content: center;
  padding: 12px;
  background: var(--burrow);
  border-radius: 40px 40px 14px 14px;
}
.burrow .carrot, .burrow .mini-bunny { width: 30px; height: 30px; display: block; }
.burrow .mini-bunny { height: 35px; }
.burrow .empty { grid-column: 1 / -1; color: #f3e3d3; font-size: 0.9rem; }

.patch {
  display: inline-flex;
  flex-direction: column;
  gap: 4px;
  padding: 10px 12px;
  /* Darker furrows land in the gaps between carrot rows. */
  background: repeating-linear-gradient(#8d6143 0 26px, #7a5238 26px 30px) 0 10px;
  border: 3px solid #6b4730;
  border-radius: 14px;
}
.patch-row { position: relative; display: flex; gap: 4px; }
.patch .carrot { width: 26px; height: 26px; display: block; }

.running-total {
  font-size: 1.1rem;
  font-weight: bold;
  color: var(--carrot-dark);
}
.patch-row .running-total {
  position: absolute;
  left: 100%;
  top: 50%;
  margin-left: 26px;
  transform: translateY(-50%);
}

.patch-wrap { transition: transform 0.9s ease-in-out; }
.patch-wrap.spinning { transform: rotate(90deg); }

/* Hutches: a × b × c as hutches of shelves of bunnies */

.hutch-picture { gap: 6px; }
.hutches {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
}
.hutch-slot { display: flex; flex-direction: column; align-items: center; gap: 4px; }
.hutch {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-top: 18px;
  padding: 6px;
  background: #c8955e;
  border: 3px solid #6b4730;
  border-radius: 6px;
  transition: box-shadow 0.3s;
}
.hutch::before {
  /* roof */
  content: "";
  position: absolute;
  left: -8px;
  right: -8px;
  top: -20px;
  height: 18px;
  background: #a0522d;
  clip-path: polygon(0 100%, 50% 0, 100% 100%);
}
.shelf {
  display: flex;
  align-items: center;
  gap: 2px;
  min-height: 30px;
  padding: 2px 6px;
  background: #f3e3c8;
  border-radius: 5px;
  transition: background 0.3s, box-shadow 0.3s;
}
.shelf .mini-bunny { width: 20px; height: 24px; display: block; }
.shelf-number, .hutch-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 24px;
  height: 24px;
  padding: 0 4px;
  margin-right: 4px;
  font-size: 0.95rem;
  font-weight: bold;
  color: #fff;
  background: var(--carrot);
  border-radius: 12px;
}
.hutch-count { margin: 0; font-size: 1.1rem; }

/* Grouping highlights */
.hutches.by-shelves .shelf { background: #fff4d6; box-shadow: 0 0 0 3px var(--carrot); }
.hutches.by-hutches .hutch { box-shadow: 0 0 0 4px var(--carrot); }

.sentence.triple { font-size: 3rem; }

.route-choices { display: flex; flex-wrap: wrap; justify-content: center; gap: 14px; }
.route-button {
  padding: 12px 22px;
  font-size: 1.9rem;
  background: #fff;
  border: 4px solid var(--ink-soft);
  border-radius: 18px;
}
.route-button.chosen { border-color: var(--carrot); background: #fff4e6; }
.route-button:disabled:not(.chosen) { opacity: 0.45; }

.steps { display: flex; flex-direction: column; align-items: center; gap: 12px; }
.steps:empty { display: none; }
.equation.step { align-items: center; }
.step-label {
  font-size: 1rem;
  color: var(--ink-soft);
  width: 4.5em;
  text-align: right;
}
.mirror {
  min-width: calc(3ch + 32px);
  padding: 4px 8px;
  text-align: center;
  color: var(--ink-soft);
  border: 4px dashed #d9cbbd;
  border-radius: 16px;
}

.both-ways {
  padding: 10px 22px;
  background: #fff;
  border: 3px dashed var(--good);
  border-radius: 18px;
  animation: pop-in 0.4s ease-out;
}
.both-ways p { margin: 4px 0; font-size: 1.4rem; }
.both-ways .both-title { color: #37863a; font-weight: bold; }
.both-ways .way.chosen { font-weight: bold; }

/* Fence It: a carrot patch in columns, with gaps you can fence */

.fence-patch {
  display: inline-flex;
  align-items: stretch;
  padding: 10px 12px;
  background: #8d6143;
  border: 3px solid #6b4730;
  border-radius: 14px;
  touch-action: none;
  user-select: none;
}
.fence-col {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 4px 0;
  transition: background 0.2s;
}
.fence-col .carrot { width: 26px; height: 26px; display: block; }

.fence-gap {
  position: relative;
  width: 14px;
  padding: 0;
  background: none;
  border: none;
  border-radius: 0;
}
.fence-col.side-left, .fence-gap.side-left { background: rgba(255, 205, 120, 0.45); }
.fence-col.side-right, .fence-gap.side-right { background: rgba(160, 225, 115, 0.45); }
button.fence-gap { cursor: col-resize; }
.fence-gap.fence::before {
  /* the fence: posts with two rails, standing taller than the patch */
  content: "";
  position: absolute;
  left: -2px;
  right: -2px;
  top: -18px;
  bottom: -18px;
  background:
    linear-gradient(#e2b27a, #e2b27a) 0 30% / 100% 5px no-repeat,
    linear-gradient(#e2b27a, #e2b27a) 0 70% / 100% 5px no-repeat,
    #c8955e;
  border: 2px solid #6b4730;
  border-radius: 5px 5px 2px 2px;
}
.fence-patch.locked button.fence-gap { cursor: default; }

.fence-labels {
  display: flex;
  justify-content: center;
  gap: 40px;
  min-height: 1.5em;
  margin: 12px 0 0;
  font-size: 1.2rem;
}
.side-label { padding: 2px 12px; border-radius: 10px; font-weight: bold; }
.side-label.left { background: #ffe2b0; }
.side-label.right { background: #d7f2c4; }

/* Carrot Crates: groups of crates, 10 carrots in each */

.crate-picture { gap: 6px; }
.crate-groups { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; }
.crate-slot { display: flex; flex-direction: column; align-items: center; gap: 4px; }
.crate-group {
  display: grid;
  grid-template-columns: repeat(5, 34px);
  gap: 3px;
  padding: 8px 10px;
  background: #fff4dd;
  border: 3px dashed #d9b98a;
  border-radius: 14px;
}
.crate-group .crate { width: 34px; height: 32px; display: block; }

/* Practice Test */

.word-problem {
  max-width: 34em;
  margin: 0;
  font-size: 1.45rem;
  line-height: 1.5;
  text-align: center;
}
.statement { margin: 0; font-size: 2.2rem; text-align: center; }
.wide-choices { grid-template-columns: 1fr; }
.wide-choices .choice { font-size: 1.6rem; }

.check-options { display: flex; flex-direction: column; gap: 10px; min-width: min(100%, 360px); }
.check-option {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 10px 18px;
  font-size: 1.6rem;
  background: #fff;
  border: 3px solid var(--ink-soft);
  border-radius: 16px;
  cursor: pointer;
}
.check-option input { width: 30px; height: 30px; accent-color: var(--carrot); cursor: pointer; }
.check-option:has(input:checked) { border-color: var(--carrot); background: #fff4e6; }
.check-option.wrong { border-color: var(--pink); background: #fdecef; }
.check-option.correct { border-color: var(--good); background: #eaf7e6; }
.check-option.shake { animation: shake 0.4s; }

.stacked-patches { display: flex; flex-direction: column; align-items: center; gap: 12px; }
.stacked-part { position: relative; }
.patch-label {
  position: absolute;
  left: 100%;
  top: 50%;
  margin-left: 12px;
  transform: translateY(-50%);
  font-size: 1.2rem;
  font-weight: bold;
  white-space: nowrap;
  color: var(--carrot-dark);
}

/* ---------- Division games ---------- */

/* Words next to an answer box ("Each bunny gets ▢") */
.equation .eq-label { font-size: 1.7rem; }
.equation.compact:has(.eq-label) { align-items: center; }

/* Share the Carrots: a pile, and a plate under each bunny */
.share-scene { gap: 16px; }
.carrot-pile {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 3px;
  max-width: 380px;
  min-height: 36px;
  padding: 10px 14px;
  background: #8d6143;
  border: 3px solid #6b4730;
  border-radius: 40px 40px 16px 16px;
}
.carrot-pile:empty::after { content: "All shared!"; color: #fff; font-weight: bold; }
.carrot-pile .carrot, .share-plate .carrot { width: 22px; height: 22px; display: block; }
.share-seats { display: flex; flex-wrap: wrap; justify-content: center; gap: 14px; }
.share-seat { display: flex; flex-direction: column; align-items: center; gap: 4px; }
.share-bunny .mini-bunny { width: 44px; height: 52px; display: block; }
.share-plate {
  display: grid;
  grid-template-columns: repeat(3, 22px);
  gap: 2px;
  justify-content: center;
  min-width: 92px;
  min-height: 40px;
  padding: 8px;
  background: #fff;
  border: 3px solid #d9cbbd;
  border-radius: 50%;
}
.share-plate .dealt { animation: pop-in 0.35s ease-out; }

/* Burrow Homes: a line of bunnies waiting, burrows filling up */
.homes-scene { gap: 14px; }
.waiting-bunnies {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 3px;
  max-width: 460px;
  min-height: 30px;
}
.waiting-bunnies:empty::after { content: "Everyone has a home!"; font-weight: bold; color: var(--good); }
.waiting-bunnies .mini-bunny, .home-burrow .mini-bunny { width: 24px; height: 28px; display: block; }
.home-burrow { grid-template-columns: repeat(3, 24px); animation: pop-in 0.35s ease-out; }

/* Hop Back: a number line with hop arcs */
.hop-scene { width: 100%; }
.number-line { width: 100%; max-width: 680px; height: auto; overflow: visible; }
.nl-axis { stroke: #6b4730; stroke-width: 3; }
.nl-major { stroke: #6b4730; stroke-width: 3; }
.nl-minor { stroke: #b99b83; stroke-width: 1.5; }
.nl-label { font-size: 16px; font-weight: bold; fill: var(--ink); text-anchor: middle; }
.nl-hop { fill: none; stroke: var(--carrot); stroke-width: 4; stroke-linecap: round; animation: pop-in 0.3s ease-out; }
.nl-bunny { transition: transform 0.4s ease-in-out; }

/* Fact Families: the fact triangle next to the array */
.family-picture { flex-direction: row; flex-wrap: wrap; align-items: center; gap: 18px 28px; }
.fact-triangle { width: 170px; height: auto; }
.ft-number { font-size: 30px; font-weight: bold; fill: var(--ink); text-anchor: middle; }
.ft-top { font-size: 34px; fill: var(--carrot-dark); }
.ft-signs { font-size: 16px; fill: var(--ink-soft); text-anchor: middle; }
.family-array { display: flex; flex-direction: column; align-items: center; gap: 4px; }

/* Picker icons */
.share-icon, .homes-icon { display: flex; align-items: center; gap: 4px; }
.share-icon .mini-bunny { width: 30px; height: 35px; }
.share-icon .carrot { width: 20px; height: 20px; }
.homes-icon .burrow { grid-template-columns: repeat(2, 20px); min-height: 0; padding: 6px 8px; }
.homes-icon .mini-bunny { width: 20px; height: 24px; }
.mode-icon .hop-icon { width: 90px; height: 40px; }
.mode-icon .fact-triangle { width: 70px; }

/* Practice Test pictures (.qp): smaller items so a whole story fits */

.qp { gap: 8px; }
.qp .carrot, .qp .item { display: block; width: 16px; height: 16px; }
.qp .mini-bunny { display: block; width: 18px; height: 21px; }
.qp .patch { gap: 2px; padding: 6px 8px; background: #8d6143; border-width: 2px; border-radius: 10px; }
.qp .patch-row { gap: 2px; }
.qp .burrow { grid-template-columns: repeat(5, 18px); gap: 2px; padding: 8px; min-height: 36px; }
.qp .burrow .mini-bunny { width: 18px; height: 21px; }

/* Boxes inside boxes: beds holding rows of carrots, shelves holding jars… */
.nest { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; }
.nest-outer {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 6px;
  background: #f6e7cf;
  border: 3px solid #c8955e;
  border-radius: 12px;
}
.nest-mid, .unit-row {
  display: flex;
  align-items: center;
  gap: 2px;
  min-height: 24px;
  padding: 3px 6px;
  background: #fff;
  border: 2px solid #e3d3bd;
  border-radius: 8px;
}
.unit-rows { display: flex; flex-direction: column; gap: 4px; }

/* Groups: baskets or bags of things */
.group-boxes { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; }
.group-box {
  display: grid;
  grid-template-columns: repeat(5, 16px);
  gap: 3px;
  padding: 8px;
  background: #f6e7cf;
  border: 3px solid #c8955e;
  border-radius: 12px;
}
.group-box.loose { background: #eaf7e6; border: 3px dashed #7cc05a; }

/* Pictures joined by a sign: two parts of a story, two patches */
.joined { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 10px 14px; }
.joined-part { display: flex; flex-direction: column; align-items: center; gap: 4px; }
.joined-caption { font-size: 0.95rem; font-weight: bold; color: var(--ink-soft); }
.joined-sign { font-size: 2.2rem; font-weight: bold; color: var(--carrot-dark); }

/* Whole patch vs. its two pieces */
.compare { display: flex; gap: 14px 24px; align-items: center; justify-content: center; }
.compare.stack { flex-direction: column; }
.compare.side { flex-direction: row; flex-wrap: wrap; align-items: flex-start; }
.compare-block { display: flex; flex-direction: column; align-items: center; gap: 4px; }
.compare-label { font-size: 1rem; font-weight: bold; color: var(--ink-soft); }

/* "Add or multiply?" rules card and clue words */

.rules {
  width: min(100%, 40em);
  margin-top: 6px;
  background: #fff;
  border: 3px solid #d9cbbd;
  border-radius: 18px;
}
.rules summary {
  padding: 10px 18px;
  font-size: 1.25rem;
  font-weight: bold;
  cursor: pointer;
  list-style-position: inside;
}
.rules-tap { margin-left: 8px; font-size: 0.95rem; font-weight: normal; color: var(--ink-soft); }
.rules[open] .rules-tap { display: none; }
.rules-list { margin: 0; padding: 0 18px 14px; list-style: none; display: flex; flex-direction: column; gap: 10px; }
.rules-list li { display: flex; align-items: flex-start; gap: 12px; font-size: 1.1rem; line-height: 1.45; }
.rules-list b { font-size: 1.25rem; color: var(--carrot-dark); }
.rule-badge {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 38px;
  height: 38px;
  padding: 0 6px;
  font-size: 1.2rem;
  font-weight: bold;
  background: #f3e7d6;
  border-radius: 12px;
}
.rule-badge.times { background: #ffd9a8; }
.rule-badge.plus { background: #cdeec0; }

/* Clue words in a story: × clues warm, + clues green, each tagged with its sign */
.clue { padding: 0 4px; border-radius: 6px; color: inherit; }
.clue-times { background: #ffd9a8; }
.clue-plus { background: #cdeec0; }
.clue-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.2em;
  height: 1.2em;
  margin-left: 4px;
  font-size: 0.8em;
  font-weight: bold;
  vertical-align: 0.1em;
  color: #fff;
  background: var(--ink-soft);
  border-radius: 50%;
}
.word-problem.ask { font-size: 1.3rem; color: var(--ink-soft); }

/* The sign outside the ( ), circled after a miss */
.statement .outside-sign { display: inline-block; padding: 0 4px; border-radius: 50%; transition: all 0.3s; }
.statement.show-sign .outside-sign {
  color: var(--carrot-dark);
  background: #ffe7c7;
  box-shadow: 0 0 0 4px var(--carrot);
  transform: scale(1.15);
}

/* ---------- Mode picker ---------- */

.picker-title { margin: 0 0 12px; font-size: 1.6rem; }

/* × / ÷ switch: which games the meadow shows */
.subject-switch {
  display: inline-flex;
  margin: 0 auto 14px;
  padding: 5px;
  background: var(--cream);
  border: 3px solid var(--carrot);
  border-radius: 999px;
}
.subject-switch button {
  padding: 10px 22px;
  font-size: 1.2rem;
  background: none;
  border: none;
  border-radius: 999px;
}
.subject-switch button.on { color: #fff; background: var(--carrot); box-shadow: 0 3px 0 var(--carrot-dark); }
.subject-sign { font-weight: bold; font-size: 1.4rem; }

.mode-picker {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.mode-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 18px 16px 20px;
  background: var(--cream);
  border: 3px solid var(--carrot);
  border-radius: 22px;
  box-shadow: 0 5px 0 var(--carrot-dark);
  transition: transform 0.1s;
}
.mode-card:active { transform: translateY(3px); box-shadow: 0 2px 0 var(--carrot-dark); }
.mode-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 72px;
}
.mode-icon-text { font-size: 2.4rem; color: var(--carrot-dark); }
.mode-icon .burrows { flex-wrap: nowrap; gap: 6px; }
.mode-icon .burrow { grid-template-columns: repeat(2, 20px); min-height: 0; padding: 8px 10px; }
.mode-icon .burrow .mini-bunny { width: 20px; height: 24px; }
.mode-icon .burrow .carrot { width: 20px; height: 20px; }
.mode-icon .patch .carrot { width: 20px; height: 20px; }
.mode-icon .patch { padding: 6px 8px; background: #8d6143; }
.mode-icon .hutches { flex-wrap: nowrap; gap: 8px; }
.mode-icon .hutch { margin-top: 12px; padding: 3px; }
.mode-icon .hutch::before { top: -14px; height: 12px; }
.mode-icon .shelf { min-height: 0; padding: 1px 3px; }
.mode-icon .shelf .mini-bunny { width: 14px; height: 17px; }
.mode-icon .fence-patch { padding: 5px 6px; }
.mode-icon .fence-col .carrot { width: 16px; height: 16px; }
.mode-icon .fence-col { gap: 1px; }
.mode-icon .fence-gap { width: 9px; }
.mode-icon .fence-gap.fence::before { top: -8px; bottom: -8px; left: 1px; right: 1px; border-width: 1.5px; }
.crate-icon { display: flex; gap: 2px; }
.crate-icon .crate { width: 34px; height: 32px; }
.mode-title { font-size: 1.4rem; }
/* A full-width card (the Practice Test) under the six games */
.mode-text { display: flex; flex-direction: column; align-items: center; gap: 6px; }
.mode-card.wide { grid-column: 1 / -1; flex-direction: row; justify-content: center; gap: 18px; }
.mode-card.wide .mode-icon { height: 60px; }
.mode-card.wide .mode-text { display: flex; flex-direction: column; align-items: flex-start; gap: 2px; }
.mode-icon .clipboard { width: 48px; height: 56px; }
.mode-blurb { font-size: 1rem; color: var(--ink-soft); }

/* The play area: problem on the left, number pad (touch screens) on the right */

.play-body { display: flex; align-items: center; gap: 28px; }
.play-main { flex: 1; min-width: 0; }

.numpad {
  display: grid;
  grid-template-columns: repeat(3, 66px);
  gap: 10px;
  padding: 14px;
  background: #f3e7d6;
  border-radius: 22px;
}
.numpad[hidden] { display: none; }
.numpad button {
  height: 66px;
  font-size: 2rem;
  background: #fff;
  border: 3px solid var(--ink-soft);
  border-radius: 16px;
  box-shadow: 0 4px 0 #d9cbbd;
}
.numpad button:active:not(:disabled) { transform: translateY(3px); box-shadow: 0 1px 0 #d9cbbd; background: #fff4e6; }
.numpad button:disabled { opacity: 0.4; }
.numpad .key-next { font-size: 0.95rem; line-height: 1.1; }

/* The box the number pad is typing into */
.answer-input.active:not([readonly]) { border-color: var(--focus); box-shadow: 0 0 0 4px rgba(47, 125, 225, 0.25); }

/* Tablet portrait and narrower: a short, wide pad under the problem
   (1 2 3 4 5 ⌫ / 6 7 8 9 0 Next) so it fits without scrolling. */
@media (max-width: 900px) {
  .play-body { flex-direction: column; gap: 16px; }
  .numpad { grid-template-columns: repeat(6, 62px); gap: 8px; padding: 10px; }
  .numpad button { height: 58px; }
  .numpad [data-key="back"] { grid-row: 1; grid-column: 6; }
  .numpad [data-key="6"] { grid-row: 2; grid-column: 1; }
  .numpad [data-key="7"] { grid-row: 2; grid-column: 2; }
  .numpad [data-key="8"] { grid-row: 2; grid-column: 3; }
  .numpad [data-key="9"] { grid-row: 2; grid-column: 4; }
  .numpad [data-key="0"] { grid-row: 2; grid-column: 5; }
  .numpad [data-key="next"] { grid-row: 2; grid-column: 6; }
}

/* ---------- Round end ---------- */

.round-end { text-align: center; }
.round-end .bunny { width: 160px; margin: 0 auto; }
.round-end h2 { font-size: 2.2rem; margin: 12px 0 4px; }
.round-end p { font-size: 1.3rem; margin: 0 0 24px; }

.footer { text-align: center; padding: 8px 0 16px; color: var(--ink-soft); }
.footer .footer-dot { margin: 0 6px; }

/* ---------- Animations ---------- */

.meadow .bunny svg { animation: breathe 3s ease-in-out infinite; transform-origin: 50% 100%; }
.bunny .ears {
  transform-box: view-box;
  transform-origin: 60px 52px;
  animation: twitch 7s ease-in-out infinite;
  animation-delay: var(--delay, 0s);
}
.bunny.hop svg { animation: hop 0.7s ease-out; transform-origin: 50% 100%; }
.bunny.think .ears { animation: wiggle 0.45s ease-in-out 2; }

@keyframes hop {
  0%, 100% { transform: translateY(0); }
  15% { transform: translateY(0) scale(1.06, 0.94); }
  40% { transform: translateY(-32px) scale(0.97, 1.04); }
  65% { transform: translateY(0) scale(1.06, 0.94); }
  80% { transform: translateY(-8px); }
}
@keyframes breathe {
  0%, 100% { transform: scale(1, 1); }
  50% { transform: scale(1.015, 0.985); }
}
@keyframes twitch {
  0%, 90%, 100% { transform: rotate(0); }
  93% { transform: rotate(-5deg); }
  96% { transform: rotate(4deg); }
}
@keyframes wiggle {
  0%, 100% { transform: rotate(0); }
  25% { transform: rotate(-7deg); }
  75% { transform: rotate(7deg); }
}
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-8px); }
  75% { transform: translateX(8px); }
}
@keyframes bump {
  50% { transform: scale(1.15); }
}
@keyframes float-up {
  from { opacity: 1; transform: translateY(0); }
  to { opacity: 0; transform: translateY(-36px); }
}

.field-bunny.arrive-pop svg { animation: pop-in 0.6s ease-out; }
.field-bunny.hop svg { animation: hop 0.7s ease-out; }

@keyframes pop-in {
  from { opacity: 0; transform: scale(0.3); }
  70% { opacity: 1; transform: scale(1.12); }
  to { transform: scale(1); }
}
@keyframes peek {
  from { transform: translateY(100%); }
  to { transform: translateY(var(--shy, 0%)); }
}
@keyframes scroll-clouds { to { background-position-x: -340px; } }
@keyframes scroll-far { to { background-position-x: -260px, -260px; } }
@keyframes scroll-near { to { background-position-x: -180px, -180px; } }
@keyframes scroll-path { to { background-position-x: -80px; } }

/* Hover effects only where there's a real pointer; on touch screens they stick after a tap. */
@media (hover: hover) {
  .big-button:hover { transform: translateY(-2px); }
  .choice:hover:not(:disabled) { border-color: var(--carrot); }
  .route-button:hover:not(:disabled) { border-color: var(--carrot); }
  button.fence-gap:not(.side-left):not(.side-right):hover:not(:disabled) { background: rgba(255, 255, 255, 0.25); }
  .mode-card:hover { transform: translateY(-3px); }
}

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