:root {
  --bg: #fff9ef;
  --text: #2a2340;
  --card: #ffffff;
  --primary: #ff7f50;
  --primary-dark: #e86637;
  --secondary: #4c9be8;
  --success: #2d9d53;
  --error: #cc374b;
  --warning: #f5a524;
  --shadow: 0 8px 20px rgba(42, 35, 64, 0.12);
  --radius: 16px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", "Noto Sans", Arial, sans-serif;
  background: linear-gradient(180deg, #fff9ef, #f8f0ff 35%, #e8f6ff);
  color: var(--text);
}

.container {
  width: min(1100px, 92%);
  margin: 0 auto;
}

.hero {
  padding: 2.6rem 0 2rem;
  text-align: center;
  background: radial-gradient(circle at top, #ffdcae, #ffefd5 55%, transparent 75%);
}

h1 {
  margin: 0;
  font-size: clamp(1.9rem, 5vw, 2.7rem);
}

.hero p {
  margin: 0.4rem 0;
}

.subtext {
  color: #5b507b;
  font-weight: 600;
}

.card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.2rem;
}

.intro,
.notes {
  margin: 1rem 0;
}

.age-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin: 1.2rem 0;
}

.age-card {
  display: block;
  text-decoration: none;
  color: var(--text);
  background: #fff;
  border-radius: var(--radius);
  padding: 1.2rem;
  box-shadow: var(--shadow);
  border: 3px solid transparent;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.age-card:hover,
.age-card:focus-visible {
  transform: translateY(-4px);
}

.age4 {
  border-color: #ffb26b;
}

.age5 {
  border-color: #7bc6ff;
}

.age6 {
  border-color: #b59dff;
}

.footer {
  text-align: center;
  padding: 1.8rem 0 2.4rem;
  color: #4f446e;
}

.page-header {
  padding: 1.5rem 0 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.back-link {
  color: var(--secondary);
  text-decoration: none;
  font-weight: 700;
}

.activity-layout {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

@media (max-width: 900px) {
  .activity-layout {
    grid-template-columns: 1fr;
  }
}

.question-card h2 {
  margin-top: 0;
}

.question-text {
  font-size: 1.2rem;
  font-weight: 700;
}

.object-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0.8rem 0;
}

.object-chip {
  font-size: 1.8rem;
  width: 56px;
  height: 56px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: #fff6e8;
}

.options {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
  gap: 0.6rem;
  margin-top: 1rem;
}

.option-btn,
.action-btn {
  border: none;
  border-radius: 12px;
  padding: 0.7rem 0.8rem;
  font-size: 1rem;
  cursor: pointer;
  font-weight: 700;
}

.option-btn {
  background: #eef4ff;
  color: #1c3765;
}

.option-btn:hover {
  background: #dbe9ff;
}

.action-row {
  display: flex;
  gap: 0.6rem;
  margin-top: 1rem;
}

.action-btn.primary {
  background: var(--primary);
  color: white;
}

.action-btn.primary:hover {
  background: var(--primary-dark);
}

.action-btn.secondary {
  background: #e8f0ff;
  color: #2d4f84;
}

.action-btn.secondary:hover {
  background: #d6e4ff;
}

.status {
  margin-top: 1rem;
  font-weight: 700;
  min-height: 1.5rem;
}

.status.ok {
  color: var(--success);
}

.status.bad {
  color: var(--error);
}

.sidebar-card h3 {
  margin-top: 0;
}

.score {
  font-size: 1.1rem;
  margin: 0.6rem 0;
}

.grade {
  font-size: 1.2rem;
  font-weight: 800;
  color: #5d3fae;
}

.progress {
  width: 100%;
  height: 12px;
  border-radius: 999px;
  background: #eee7ff;
  overflow: hidden;
}

.progress > div {
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, #6ab8ff, #8e7dff);
  transition: width 0.3s ease;
}

.legend {
  margin-top: 0.8rem;
  padding: 0.8rem;
  border-radius: 12px;
  background: #f8f3ff;
  font-weight: 600;
}

.color-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.45rem;
  margin-top: 0.8rem;
  max-width: 320px;
}

.tile {
  width: 100%;
  aspect-ratio: 1 / 1;
  border: 2px solid #d4caef;
  border-radius: 8px;
  font-weight: 800;
  background: #ffffff;
  color: #4f446e;
}

.tile.done {
  color: transparent;
}

.hidden {
  display: none;
}

.controls-row {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 0.8rem;
  flex-wrap: wrap;
}

.mini-btn {
  border: none;
  border-radius: 10px;
  padding: 0.45rem 0.7rem;
  background: #f0eaff;
  color: #45306f;
  font-weight: 700;
  cursor: pointer;
}

.mini-btn:hover {
  background: #e2d7ff;
}

.small-note {
  color: #5a4f79;
  font-size: 0.9rem;
  margin: 0.4rem 0;
}

.addon-section {
  margin-top: 1rem;
  padding-top: 0.7rem;
  border-top: 1px dashed #d7ccee;
}

.addon-section h4 {
  margin: 0 0 0.5rem;
}

.sticker-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.sticker {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: #fff3d6;
  border: 2px solid #ffd272;
  font-size: 1.1rem;
}

.map-row {
  display: flex;
  justify-content: space-between;
  gap: 0.25rem;
  font-size: 1.3rem;
}

.map-on {
  filter: none;
  opacity: 1;
}

.map-off {
  filter: grayscale(1);
  opacity: 0.4;
}

.parent-stats p {
  margin: 0.3rem 0;
  font-size: 0.92rem;
}

.reveal-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(58px, 1fr));
  gap: 0.4rem;
  max-width: 330px;
}

.reveal-tile {
  border: 2px solid #d0c4ee;
  border-radius: 8px;
  aspect-ratio: 1 / 1;
  background: #fff;
  font-weight: 800;
  color: #4f446e;
  cursor: pointer;
}

.reveal-tile.done {
  color: #fff;
  font-size: 1.2rem;
}

.sort-wrap {
  display: grid;
  gap: 0.8rem;
}

.drag-cards {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  padding: 0.5rem;
  border-radius: 10px;
  background: #f5f9ff;
}

.drag-card {
  background: #fff;
  border: 2px solid #b8cef7;
  border-radius: 10px;
  padding: 0.45rem 0.55rem;
  font-weight: 700;
  cursor: grab;
}

.drag-card.selected {
  border-color: #6f56c9;
  background: #efe9ff;
  box-shadow: 0 0 0 3px rgba(111, 86, 201, 0.2);
}

.basket-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 0.6rem;
}

.basket {
  border: 2px dashed #cabcf0;
  border-radius: 12px;
  min-height: 120px;
  padding: 0.45rem;
  background: #fcf9ff;
}

.basket h5 {
  margin: 0.1rem 0 0.4rem;
}

.basket-items {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.spot-wrap {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.7rem;
}

.scene {
  background: #f8f4ff;
  border-radius: 12px;
  padding: 0.5rem;
}

.scene h5 {
  margin: 0 0 0.3rem;
}

.scene-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.3rem;
}

.scene-cell {
  background: white;
  border-radius: 8px;
  display: grid;
  place-items: center;
  height: 44px;
  border: 1px solid #e0d6f4;
}

.memory-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(62px, 1fr));
  gap: 0.5rem;
  max-width: 360px;
}

.memory-card {
  border: 2px solid #c8baf2;
  border-radius: 10px;
  aspect-ratio: 1 / 1;
  background: #ffffff;
  font-size: 1.25rem;
  font-weight: 900;
  color: #5c4b87;
  cursor: pointer;
}

.memory-card.match {
  background: #d9ffe6;
  border-color: #86dba2;
}

.certificate-wrap {
  margin-top: 1rem;
  padding: 0.9rem;
  border-radius: 12px;
  background: #fff7e6;
  border: 2px dashed #f1c26f;
  display: grid;
  gap: 0.6rem;
  max-width: 420px;
}

.certificate-wrap h3 {
  margin: 0;
  font-size: 1.1rem;
}

.cert-input {
  border: 2px solid #e2d5ff;
  border-radius: 10px;
  padding: 0.6rem 0.7rem;
  font-size: 1rem;
}

.confetti-wrap {
  position: fixed;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.confetti {
  position: absolute;
  top: -16px;
  width: 10px;
  height: 14px;
  border-radius: 2px;
  animation: drop 1.5s linear forwards;
}

@keyframes drop {
  to {
    transform: translateY(104vh) rotate(540deg);
    opacity: 0.9;
  }
}