/* ============================================================
   Little Learners — Design Tokens
   Palette: Sunny Yellow / Sky Blue / Coral / Grass Green / Grape / Cream
   Display face: Baloo 2 (rounded, bouncy)  Body face: Quicksand
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Baloo+2:wght@500;700;800&family=Quicksand:wght@500;600;700&display=swap');

:root{
  --cream:        #FFF8E7;
  --cream-2:      #FFEFC9;
  --sun:          #FFD93D;
  --sky:          #4EA8DE;
  --sky-dark:     #2E86C1;
  --coral:        #FF6B6B;
  --grass:        #6BCB77;
  --grape:        #9B5DE5;
  --ink:          #2D2A4A;
  --white:        #FFFFFF;

  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-sm: 12px;

  --shadow-soft: 0 8px 0 rgba(45,42,74,0.12);
  --shadow-pop:  0 10px 24px rgba(45,42,74,0.18);

  --font-display: 'Baloo 2', system-ui, sans-serif;
  --font-body: 'Quicksand', system-ui, sans-serif;
}

*{ box-sizing: border-box; }

html, body{
  margin:0;
  padding:0;
  background: var(--cream);
  color: var(--ink);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 18px;
  -webkit-font-smoothing: antialiased;
}

body{
  background-image:
    radial-gradient(circle at 8% 12%, rgba(255,217,61,0.35) 0, transparent 32%),
    radial-gradient(circle at 92% 18%, rgba(78,168,222,0.30) 0, transparent 30%),
    radial-gradient(circle at 12% 90%, rgba(107,203,119,0.30) 0, transparent 28%),
    radial-gradient(circle at 90% 88%, rgba(255,107,107,0.25) 0, transparent 28%);
  background-attachment: fixed;
  min-height: 100vh;
}

h1,h2,h3,h4{
  font-family: var(--font-display);
  font-weight: 800;
  margin: 0 0 .4em;
  line-height: 1.15;
}

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

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

:focus-visible{
  outline: 4px solid var(--grape);
  outline-offset: 3px;
  border-radius: 8px;
}

/* ---------- Layout shell ---------- */
.wrap{
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 20px 60px;
}

.site-header{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 16px;
  padding: 18px 24px;
  max-width: 1180px;
  margin: 0 auto;
}

.brand{
  display:flex;
  align-items:center;
  gap:12px;
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 800;
  color: var(--ink);
}
.brand .mascot{ font-size: 38px; animation: bob 3s ease-in-out infinite; }

.nav{
  display:flex;
  flex-wrap: wrap;
  gap: 10px;
}

.nav a{
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  padding: 10px 18px;
  border-radius: 999px;
  background: var(--white);
  box-shadow: var(--shadow-soft);
  border: 3px solid transparent;
  transition: transform .15s ease, border-color .15s ease;
}
.nav a:hover{ transform: translateY(-3px); }
.nav a.active{ background: var(--sun); border-color: var(--ink); }

.class-picker{
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  padding: 10px 14px;
  border-radius: 999px;
  border: 3px solid var(--ink);
  background: var(--grape);
  color: var(--white);
  cursor: pointer;
  appearance: none;
}
.class-picker option{ color: var(--ink); background: var(--white); font-weight: 600; }

.class-badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family: var(--font-display);
  font-weight:700;
  background: var(--white);
  border: 3px solid var(--ink);
  color: var(--ink);
  padding: 8px 16px;
  border-radius: 999px;
  box-shadow: var(--shadow-soft);
  margin-bottom: 18px;
}

/* ---------- Hero ---------- */
.hero{
  display:flex;
  align-items:center;
  gap: 36px;
  flex-wrap: wrap;
  padding: 30px 0 10px;
}
.hero-text{ flex: 1 1 420px; }
.hero-text .eyebrow{
  display:inline-block;
  font-family: var(--font-display);
  font-weight:700;
  background: var(--grape);
  color: var(--white);
  padding: 6px 16px;
  border-radius: 999px;
  font-size: 14px;
  margin-bottom: 14px;
}
.hero-text h1{ font-size: clamp(34px, 5vw, 56px); color: var(--ink); }
.hero-text h1 span{ color: var(--sky-dark); }
.hero-text p{ font-size: 19px; max-width: 46ch; }

.hero-mascot{
  flex: 0 0 auto;
  font-size: 150px;
  animation: bob 4s ease-in-out infinite;
  filter: drop-shadow(0 14px 0 rgba(45,42,74,0.10));
}

@keyframes bob{
  0%,100%{ transform: translateY(0) rotate(-2deg); }
  50%{ transform: translateY(-14px) rotate(2deg); }
}

/* ---------- Section cards / grids ---------- */
.section-title{
  display:flex;
  align-items:baseline;
  gap: 12px;
  margin: 36px 0 18px;
}
.section-title h2{ font-size: 30px; color: var(--ink); }
.section-title .tag{
  font-family: var(--font-body);
  font-weight:700;
  font-size: 14px;
  color: var(--ink);
  background: var(--cream-2);
  padding: 4px 12px;
  border-radius: 999px;
}

.card-grid{
  display:grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 22px;
}

.activity-card{
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 26px 22px;
  box-shadow: var(--shadow-soft);
  border: 3px solid var(--ink);
  position: relative;
  transition: transform .18s ease, box-shadow .18s ease;
}
.activity-card:hover{
  transform: translateY(-6px) rotate(-0.5deg);
  box-shadow: var(--shadow-pop);
}
.activity-card .icon{ font-size: 52px; margin-bottom: 10px; display:block; }
.activity-card h3{ font-size: 22px; margin-bottom: 6px; }
.activity-card p{ font-size: 15px; margin: 0 0 18px; opacity: .85; }

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  color: var(--ink);
  background: var(--sun);
  border: 3px solid var(--ink);
  border-radius: 999px;
  padding: 12px 24px;
  cursor:pointer;
  box-shadow: var(--shadow-soft);
  transition: transform .12s ease, box-shadow .12s ease;
}
.btn:hover{ transform: translateY(-3px); }
.btn:active{ transform: translateY(1px); box-shadow: 0 4px 0 rgba(45,42,74,0.12); }
.btn.btn-sky{ background: var(--sky); color: var(--white); }
.btn.btn-coral{ background: var(--coral); color: var(--white); }
.btn.btn-grass{ background: var(--grass); color: var(--ink); }
.btn.btn-grape{ background: var(--grape); color: var(--white); }
.btn.btn-ghost{ background: var(--white); }
.btn[disabled]{ opacity: .45; cursor: not-allowed; transform:none; }

/* ---------- Letter / number tiles ---------- */
.tile-grid{
  display:grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 16px;
  margin: 10px 0 30px;
}

.tile{
  background: var(--white);
  border: 3px solid var(--ink);
  border-radius: var(--radius-md);
  padding: 16px 8px 12px;
  text-align:center;
  cursor:pointer;
  box-shadow: var(--shadow-soft);
  transition: transform .15s ease, background .15s ease;
}
.tile:hover{ transform: scale(1.06) rotate(-1deg); background: var(--cream-2); }
.tile .big-char{
  font-family: var(--font-display);
  font-size: 44px;
  font-weight: 800;
  color: var(--sky-dark);
}
.tile .emoji{ font-size: 34px; margin: 4px 0; }
.tile .label{ font-size: 13px; font-weight: 700; }

.tile.tile-coral .big-char{ color: var(--coral); }
.tile.tile-grass .big-char{ color: var(--grass); }
.tile.tile-grape .big-char{ color: var(--grape); }

/* ---------- Flashcard stage (alphabet/number focus view) ---------- */
.stage{
  background: var(--white);
  border: 3px solid var(--ink);
  border-radius: var(--radius-lg);
  padding: 40px;
  text-align:center;
  box-shadow: var(--shadow-pop);
  max-width: 520px;
  margin: 10px auto 30px;
}
.stage .stage-char{
  font-family: var(--font-display);
  font-size: 130px;
  font-weight: 800;
  color: var(--sky-dark);
  line-height:1;
}
.stage .stage-emoji{ font-size: 80px; margin: 14px 0; }
.stage .stage-word{ font-size: 26px; font-weight: 700; margin-bottom: 18px; }
.stage-controls{
  display:flex;
  justify-content:center;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 18px;
}

/* ---------- Quiz ---------- */
.quiz-box{
  background: var(--white);
  border: 3px solid var(--ink);
  border-radius: var(--radius-lg);
  padding: 32px;
  max-width: 620px;
  margin: 10px auto;
  box-shadow: var(--shadow-pop);
}
.quiz-progress{
  display:flex;
  justify-content:space-between;
  align-items:center;
  font-family: var(--font-display);
  font-weight: 700;
  margin-bottom: 14px;
}
.progress-bar{
  height: 14px;
  background: var(--cream-2);
  border-radius: 999px;
  overflow: hidden;
  border: 2px solid var(--ink);
  margin-bottom: 22px;
}
.progress-fill{
  height: 100%;
  background: var(--grass);
  width: 0%;
  transition: width .3s ease;
}
.quiz-question{ text-align:center; margin-bottom: 22px; }
.quiz-question .q-visual{ font-size: 80px; margin-bottom: 6px; }
.quiz-question h3{ font-size: 24px; }
.quiz-options{
  display:grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}
.opt-btn{
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  padding: 18px;
  border: 3px solid var(--ink);
  border-radius: var(--radius-md);
  background: var(--cream);
  cursor:pointer;
  transition: transform .12s ease, background .15s ease;
}
.opt-btn:hover{ transform: translateY(-3px); background: var(--cream-2); }
.opt-btn.correct{ background: var(--grass); color: var(--white); }
.opt-btn.wrong{ background: var(--coral); color: var(--white); }
.opt-btn[disabled]{ cursor:not-allowed; }

.quiz-result{ text-align:center; }
.quiz-result .big-score{
  font-family: var(--font-display);
  font-size: 64px;
  font-weight: 800;
  color: var(--grape);
}

/* ---------- Game (matching) ---------- */
.game-board{
  display:grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  max-width: 640px;
  margin: 10px auto 30px;
}
@media (max-width: 560px){
  .game-board{ grid-template-columns: repeat(3, 1fr); }
}
.flip-card{
  aspect-ratio: 1;
  perspective: 800px;
  cursor:pointer;
}
.flip-inner{
  position:relative;
  width:100%; height:100%;
  transition: transform .4s;
  transform-style: preserve-3d;
}
.flip-card.flipped .flip-inner{ transform: rotateY(180deg); }
.flip-card.matched .flip-inner{ transform: rotateY(180deg); }
.flip-face{
  position:absolute; inset:0;
  display:flex; align-items:center; justify-content:center;
  border-radius: var(--radius-md);
  border: 3px solid var(--ink);
  font-size: 34px;
  font-family: var(--font-display);
  font-weight: 800;
  backface-visibility: hidden;
}
.flip-front{ background: var(--sky); color: var(--white); font-size: 30px; }
.flip-back{ background: var(--white); transform: rotateY(180deg); font-size: 22px; padding: 6px; text-align:center; word-break: break-word; }
.flip-card.matched .flip-back{ background: var(--grass); color: var(--white); }

.game-meta{
  display:flex;
  justify-content:center;
  gap: 24px;
  font-family: var(--font-display);
  font-weight: 700;
  margin-bottom: 16px;
}

/* ---------- Banner / toast ---------- */
.celebrate{
  text-align:center;
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 800;
  color: var(--grass);
  min-height: 30px;
}

/* ---------- Footer ---------- */
.site-footer{
  text-align:center;
  padding: 30px 20px 50px;
  font-size: 14px;
  opacity: .7;
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce){
  *{ animation: none !important; transition: none !important; }
}

/* ---------- Responsive ---------- */
@media (max-width: 640px){
  .hero{ flex-direction: column; text-align:center; }
  .hero-mascot{ font-size: 100px; }
  .quiz-options{ grid-template-columns: 1fr; }
}