:root{
  --sky:#DDF3FF; --sky2:#BDE7FF; --ink:#27315A; --ink-soft:#5B6690;
  --coral:#FF6B6B; --orange:#FF9F43; --sun:#FFC93C; --mint:#2EC4B6; --grass:#6BCB77;
  --grape:#9B5DE5; --pink:#FF70A6; --blue:#3A86FF;
  --card:#FFFFFF; --radius:28px;
  --shadow:0 8px 0 rgba(39,49,90,.12), 0 18px 30px -12px rgba(39,49,90,.25);
  --good:#38B000; --bad:#FF4D4D;
  font-size:16px;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;padding:0}
body{
  font-family:'Fredoka','Baloo 2',system-ui,sans-serif; color:var(--ink);
  background:var(--sky) url('../img/hero_bg.webp') top center/100% auto no-repeat;
  min-height:100vh; overflow-x:hidden;
  user-select:none; -webkit-user-select:none;
}
body::before{ /* soft fade from the landscape into the sky color */
  content:'';position:fixed;inset:0;z-index:-1;
  background:linear-gradient(180deg,#9fd8ff 0%,var(--sky) 40%,#FFF6E5 100%);
}
button{font-family:inherit;color:inherit;border:0;cursor:pointer;background:none}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}

/* ---------- top bar ---------- */
.topbar{
  position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:10px;
  padding:10px 16px; background:rgba(255,255,255,.78); backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px); border-bottom:3px solid rgba(255,255,255,.9);
}
.topbar .logo{height:54px;width:auto;cursor:pointer;filter:drop-shadow(0 3px 2px rgba(0,0,0,.12))}
.topbar .spacer{flex:1}
.pill{
  display:inline-flex;align-items:center;gap:6px;padding:6px 14px;border-radius:999px;
  background:#fff;font-weight:700;font-size:1.15rem;box-shadow:0 4px 0 rgba(39,49,90,.12);
}
.pill .star{font-size:1.3rem}
.icon-btn{
  width:46px;height:46px;border-radius:50%;background:#fff;font-size:1.4rem;
  display:grid;place-items:center;box-shadow:0 4px 0 rgba(39,49,90,.12);
}
.icon-btn:active{transform:translateY(3px);box-shadow:0 1px 0 rgba(39,49,90,.12)}

main{max-width:1040px;margin:0 auto;padding:18px 16px 110px}

/* ---------- home ---------- */
.hello{
  display:flex;align-items:center;gap:14px;margin:6px 0 20px;
}
.hello img{width:120px;flex:none;filter:drop-shadow(0 10px 10px rgba(0,0,0,.12));animation:bob 3s ease-in-out infinite}
.bubble{
  position:relative;background:#fff;border-radius:24px;padding:14px 18px;
  font-size:1.35rem;font-weight:600;box-shadow:var(--shadow);line-height:1.3;
}
.bubble::before{
  content:'';position:absolute;left:-12px;top:30px;border:12px solid transparent;
  border-right-color:#fff;border-left:0;
}
.bubble small{display:block;font-size:1rem;color:var(--ink-soft);font-weight:500}

.grid{display:grid;gap:16px;grid-template-columns:repeat(auto-fill,minmax(150px,1fr))}
.tile{
  position:relative;background:var(--card);border-radius:var(--radius);padding:14px 12px 16px;
  text-align:center;box-shadow:var(--shadow);transition:transform .15s;
  display:flex;flex-direction:column;align-items:center;gap:6px;overflow:hidden;
}
.tile::after{content:'';position:absolute;inset:auto 0 0 0;height:8px;background:var(--c,var(--mint))}
.tile:hover{transform:translateY(-4px) rotate(-1deg)}
.tile:active{transform:translateY(4px) scale(.98)}
.tile img{width:100%;max-width:130px;aspect-ratio:1;object-fit:contain;mix-blend-mode:multiply}
.tile h3{margin:0;font-size:1.3rem;font-weight:700}
.tile p{margin:0;color:var(--ink-soft);font-size:.95rem}
.tile.big{grid-column:span 2;flex-direction:row;text-align:left;gap:14px;padding:14px 18px 18px;
  background:linear-gradient(135deg,#fff 40%,#FFE9E4)}
.tile.big img{max-width:150px;width:42%}
.tile.big h3{font-size:1.7rem}
.tile.big p{font-size:1.1rem}
.tile.big .go{display:inline-block;margin-top:8px;background:var(--coral);color:#fff;padding:6px 16px;border-radius:99px;font-weight:700;box-shadow:0 4px 0 #d94848}
@media (max-width:420px){ .grid{grid-template-columns:1fr 1fr;gap:12px} .tile.big{grid-column:span 2} }

.section-title{
  display:flex;align-items:center;gap:10px;font-size:1.7rem;font-weight:700;margin:4px 0 16px;
}
.back{
  width:48px;height:48px;border-radius:50%;background:#fff;font-size:1.6rem;flex:none;
  box-shadow:0 4px 0 rgba(39,49,90,.15);display:grid;place-items:center;
}
.back:active{transform:translateY(3px);box-shadow:none}

/* ---------- chunky buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:14px 24px;border-radius:999px;font-size:1.3rem;font-weight:700;color:#fff;
  background:var(--b,var(--mint));box-shadow:0 6px 0 rgba(0,0,0,.18);min-height:58px;
  transition:transform .1s, box-shadow .1s;
}
.btn:active{transform:translateY(5px);box-shadow:0 1px 0 rgba(0,0,0,.18)}
.btn.ghost{background:#fff;color:var(--ink)}
.btn.small{font-size:1.05rem;padding:10px 16px;min-height:46px}
.btn[disabled]{opacity:.5;pointer-events:none}
.btn .e{font-size:1.5rem}
.btn-row{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:18px}

/* ---------- reading card ---------- */
.stage{
  background:#fff;border-radius:36px;box-shadow:var(--shadow);padding:22px 18px 26px;
  text-align:center;position:relative;max-width:640px;margin:0 auto;
}
.progress{height:14px;border-radius:99px;background:#EEF2FB;overflow:hidden;margin:0 0 14px}
.progress i{display:block;height:100%;background:linear-gradient(90deg,var(--sun),var(--orange));border-radius:99px;transition:width .4s}
.word-pic{width:min(260px,62vw);aspect-ratio:1;object-fit:contain;margin:0 auto;mix-blend-mode:multiply;animation:pop .45s cubic-bezier(.3,1.6,.5,1)}
.word{
  font-size:clamp(3.2rem,14vw,5.2rem);font-weight:700;letter-spacing:.04em;line-height:1.1;margin:6px 0 4px;
}
.word span{display:inline-block;transition:color .2s, transform .2s}
.word span.hl{color:var(--coral);transform:translateY(-6px) scale(1.1)}
.sight-card{
  width:min(300px,70vw);aspect-ratio:4/3;margin:0 auto;border-radius:30px;display:grid;place-items:center;
  background:radial-gradient(circle at 30% 20%,#fff6 0,transparent 40%),var(--c,var(--sun));
  color:#fff;font-size:clamp(3.4rem,16vw,5.4rem);font-weight:700;text-shadow:0 5px 0 rgba(0,0,0,.15);
  animation:pop .45s cubic-bezier(.3,1.6,.5,1);
}
.heard{min-height:30px;font-size:1.15rem;color:var(--ink-soft);margin-top:6px}
.heard b{color:var(--ink)}

.mic{
  width:108px;height:108px;border-radius:50%;font-size:3rem;color:#fff;
  background:radial-gradient(circle at 35% 30%,#ff9a9a,var(--coral));
  box-shadow:0 8px 0 #d94848,0 16px 30px -8px rgba(255,107,107,.7);position:relative;
}
.mic:active{transform:translateY(6px);box-shadow:0 2px 0 #d94848}
.mic.on{animation:pulse 1.1s infinite}
.mic.on::before,.mic.on::after{
  content:'';position:absolute;inset:-10px;border-radius:50%;border:4px solid var(--coral);opacity:.5;animation:ring 1.4s infinite;
}
.mic.on::after{animation-delay:.7s}
.mic-label{font-weight:700;font-size:1.05rem;margin-top:8px;color:var(--ink-soft)}
.speak{
  width:78px;height:78px;border-radius:50%;font-size:2.2rem;background:var(--sun);
  box-shadow:0 7px 0 #d9a520;
}
.speak:active{transform:translateY(5px);box-shadow:0 2px 0 #d9a520}
.controls{display:flex;align-items:flex-end;justify-content:center;gap:26px;margin-top:14px}
.controls > div{display:flex;flex-direction:column;align-items:center}

.teacher-judge{display:flex;gap:12px;justify-content:center;margin-top:14px}

/* ---------- feedback overlay ---------- */
.feedback{
  position:fixed;inset:0;z-index:60;display:grid;place-items:center;pointer-events:none;
  background:rgba(39,49,90,0);transition:background .2s;
}
.feedback.show{background:rgba(39,49,90,.35);pointer-events:auto}
.fb-card{
  background:#fff;border-radius:36px;padding:18px 24px 24px;text-align:center;width:min(360px,86vw);
  transform:scale(.4);opacity:0;transition:transform .35s cubic-bezier(.3,1.6,.5,1),opacity .2s;
  box-shadow:0 30px 60px -20px rgba(0,0,0,.4);
}
.feedback.show .fb-card{transform:scale(1);opacity:1}
.fb-card img{width:180px;margin:-70px auto 0;filter:drop-shadow(0 12px 12px rgba(0,0,0,.18))}
.fb-card h2{font-size:2rem;margin:4px 0}
.fb-card p{font-size:1.2rem;margin:0 0 14px;color:var(--ink-soft)}
.fb-card.good h2{color:var(--good)}
.fb-card.bad h2{color:var(--coral)}

/* ---------- stories ---------- */
.book-tile img{mix-blend-mode:normal;aspect-ratio:4/3;object-fit:cover;border-radius:20px;max-width:100%}
.story-pic{width:100%;border-radius:26px;aspect-ratio:4/3;object-fit:cover;box-shadow:0 10px 20px -10px rgba(0,0,0,.3)}
.sentence{
  font-size:clamp(1.8rem,7vw,2.6rem);font-weight:600;line-height:1.5;margin:16px 4px 6px;
}
.sentence .w{
  display:inline-block;padding:0 6px;margin:2px 1px;border-radius:14px;cursor:pointer;
  transition:background .2s,color .2s,transform .2s;
}
.sentence .w.reading{background:#FFF0B3;transform:scale(1.08)}
.sentence .w.ok{background:#D8F8CF;color:#1D7A00}
.sentence .w.miss{background:#FFE0E0;color:#D62828;text-decoration:underline wavy #FF4D4D 2px;text-underline-offset:6px}
.pager{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:16px}
.dots{display:flex;gap:8px}
.dots i{width:14px;height:14px;border-radius:50%;background:#DCE3F5}
.dots i.on{background:var(--orange)}

/* ---------- ABC ---------- */
.abc-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(88px,1fr));gap:12px}
.abc{
  aspect-ratio:1;border-radius:24px;font-size:2.6rem;font-weight:700;color:#fff;
  box-shadow:0 6px 0 rgba(0,0,0,.15);display:grid;place-items:center;position:relative;
}
.abc:active{transform:translateY(5px);box-shadow:0 1px 0 rgba(0,0,0,.15)}
.abc .done{position:absolute;top:4px;right:8px;font-size:1rem}
.letter-big{font-size:clamp(5rem,26vw,8rem);font-weight:700;line-height:1;margin:0}
.letter-big small{font-size:.55em;opacity:.7}

/* ---------- games ---------- */
.choices{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:14px}
.choice{
  background:#fff;border-radius:26px;padding:10px;box-shadow:var(--shadow);
  border:4px solid transparent;transition:transform .15s,border-color .2s;
}
.choice img{width:100%;aspect-ratio:1;object-fit:contain;mix-blend-mode:multiply}
.choice.txt{font-size:clamp(2rem,9vw,3rem);font-weight:700;min-height:110px}
.choice.right{border-color:var(--good);animation:tada .6s}
.choice.wrong{border-color:var(--bad);animation:shake .4s}
.choice:active{transform:scale(.96)}
.prompt-line{font-size:1.6rem;font-weight:700;display:flex;align-items:center;justify-content:center;gap:10px;flex-wrap:wrap}

.mem-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;max-width:560px;margin:0 auto}
.mem{aspect-ratio:1;perspective:800px;padding:0}
@media (max-width:420px){.mem-grid{gap:8px}.mem-back{font-size:1.15rem !important}}
.mem-in{position:relative;width:100%;height:100%;transition:transform .45s;transform-style:preserve-3d}
.mem.flip .mem-in{transform:rotateY(180deg)}
.mem-face{
  position:absolute;inset:0;border-radius:18px;backface-visibility:hidden;-webkit-backface-visibility:hidden;
  display:grid;place-items:center;box-shadow:0 5px 0 rgba(0,0,0,.12);overflow:hidden;
}
.mem-front{background:linear-gradient(135deg,var(--grape),var(--blue));color:#fff;font-size:2.4rem}
.mem-back{background:#fff;transform:rotateY(180deg);font-size:clamp(1.2rem,5vw,1.8rem);font-weight:700}
.mem-back img{width:90%;mix-blend-mode:multiply}
.mem.matched .mem-back{background:#E6FBE0;box-shadow:0 0 0 4px var(--good)}

.sky-box{
  position:relative;height:min(62vh,520px);border-radius:32px;overflow:hidden;
  background:linear-gradient(#8fd3ff,#e3f6ff);box-shadow:var(--shadow);
}
.balloon{
  position:absolute;bottom:-140px;width:84px;height:104px;border-radius:50% 50% 48% 48%;
  display:grid;place-items:center;font-size:2.4rem;font-weight:700;color:#fff;
  text-shadow:0 3px 0 rgba(0,0,0,.2);box-shadow:inset -10px -12px 0 rgba(0,0,0,.12),inset 10px 10px 0 rgba(255,255,255,.25);
  animation:rise linear forwards;cursor:pointer;
}
.balloon::after{content:'';position:absolute;bottom:-40px;left:50%;width:2px;height:40px;background:rgba(0,0,0,.25)}
.balloon.popped{animation:popb .3s forwards !important}

.slots{display:flex;gap:10px;justify-content:center;margin:14px 0}
.slot{
  width:64px;height:74px;border-radius:18px;background:#EEF2FB;border:3px dashed #BAC6E6;
  display:grid;place-items:center;font-size:2.4rem;font-weight:700;
}
.slot.filled{background:#fff;border:3px solid var(--mint);animation:pop .3s}
.tiles{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}
.ltile{
  width:64px;height:64px;border-radius:18px;font-size:2.2rem;font-weight:700;color:#fff;
  box-shadow:0 6px 0 rgba(0,0,0,.18);
}
.ltile:active{transform:translateY(5px);box-shadow:0 1px 0 rgba(0,0,0,.18)}
.ltile.used{visibility:hidden}

.count-row{display:flex;flex-wrap:wrap;gap:6px;justify-content:center;max-width:460px;margin:0 auto}
.count-row img{width:72px;mix-blend-mode:multiply;animation:pop .4s backwards}

.color-blob{width:170px;height:170px;margin:10px auto;border-radius:44% 56% 52% 48%/55% 45% 55% 45%;box-shadow:inset -14px -16px 0 rgba(0,0,0,.12);animation:pop .4s}

/* ---------- stickers ---------- */
.stickers{display:grid;grid-template-columns:repeat(auto-fill,minmax(96px,1fr));gap:12px}
.sticker{
  background:#fff;border-radius:22px;padding:8px;box-shadow:0 5px 0 rgba(0,0,0,.1);text-align:center;
  font-weight:600;font-size:.9rem;
}
.sticker img{width:100%;aspect-ratio:1;object-fit:contain;mix-blend-mode:multiply}
.sticker.locked img{filter:brightness(0) opacity(.12)}
.sticker.locked span{opacity:.4}

/* ---------- grown-ups ---------- */
.panel{background:#fff;border-radius:26px;box-shadow:var(--shadow);padding:18px;margin-bottom:16px}
.panel h3{margin:0 0 10px;font-size:1.3rem}
.panel label{display:block;font-weight:600;margin:10px 0 4px}
.panel input,.panel select,.panel textarea{
  width:100%;font:inherit;font-size:1.05rem;padding:10px 14px;border-radius:14px;border:2px solid #DCE3F5;background:#F8FAFF;color:var(--ink);
  user-select:text;-webkit-user-select:text;
}
.panel textarea{min-height:90px}
.kids{display:flex;flex-wrap:wrap;gap:10px}
.kid{
  padding:10px 16px;border-radius:999px;background:#F1F4FC;font-weight:700;font-size:1.05rem;border:3px solid transparent;
}
.kid.on{border-color:var(--mint);background:#E3FAF7}
table.stats{width:100%;border-collapse:collapse;font-size:1rem}
table.stats th,table.stats td{padding:8px 6px;border-bottom:1px solid #EEF2FB;text-align:left}
.tag{display:inline-block;padding:3px 10px;border-radius:99px;background:#FFE7E7;color:#C62828;margin:2px;font-weight:600}
.note{font-size:.95rem;color:var(--ink-soft)}
.banner{
  background:#FFF4CC;border-radius:18px;padding:10px 14px;font-weight:600;margin:0 auto 14px;max-width:640px;
  display:flex;gap:10px;align-items:center;font-size:1rem;
}

/* ---------- rewards ---------- */
.rank{
  display:flex;align-items:center;gap:14px;background:linear-gradient(135deg,#FFF7D6,#FFE3F0);border-radius:26px;
  padding:12px 16px;box-shadow:var(--shadow);margin:0 0 18px;border:3px solid #fff;
}
.rank img{width:74px;height:74px;object-fit:contain;mix-blend-mode:multiply;flex:none}
.rank .rank-next{width:48px;height:48px;filter:grayscale(1) opacity(.45)}
.rank-body{flex:1;min-width:0}
.rank-name{font-size:1.35rem;font-weight:700}
.rank .progress{height:16px;background:#fff}
.pill.bump{animation:bump .5s}
.fly-star{position:fixed;z-index:90;font-size:28px;pointer-events:none;margin:-14px 0 0 -14px;filter:drop-shadow(0 3px 3px rgba(0,0,0,.2))}
.streak-pop{
  position:fixed;left:50%;top:22%;z-index:95;transform:translateX(-50%);pointer-events:none;
  background:linear-gradient(135deg,#FF9F43,#FF4D6D);color:#fff;font-size:2.2rem;font-weight:700;text-align:center;
  padding:14px 28px;border-radius:28px;box-shadow:0 14px 30px -8px rgba(255,77,109,.6);animation:streak 2.3s forwards;white-space:nowrap;
}
.streak-pop small{display:block;font-size:1.1rem;opacity:.95}
.trophy{animation:pop .5s cubic-bezier(.3,1.6,.5,1), wiggle 1.4s .6s ease-in-out infinite !important}

.gift{position:fixed;inset:0;z-index:80;display:none;place-items:center;background:radial-gradient(circle,#5B3FA8 0%,#2A1F5C 75%);overflow:hidden}
.gift.show{display:grid}
.gift .rays{
  position:absolute;left:50%;top:50%;width:160vmax;height:160vmax;margin:-80vmax 0 0 -80vmax;
  background:repeating-conic-gradient(from 0deg,rgba(255,230,120,.35) 0 10deg,transparent 10deg 20deg);
  animation:spin 18s linear infinite;
  -webkit-mask:radial-gradient(circle,#000 10%,transparent 60%);mask:radial-gradient(circle,#000 10%,transparent 60%);
}
.gift-card{position:relative;text-align:center;color:#fff;width:min(420px,92vw);animation:pop .45s cubic-bezier(.3,1.6,.5,1)}
.gift-card h2{font-size:2.4rem;margin:0 0 6px;text-shadow:0 4px 0 rgba(0,0,0,.2)}
.gift-stage{position:relative;height:min(300px,62vw);display:grid;place-items:center}
.gift-box{width:min(250px,56vw);cursor:pointer;filter:drop-shadow(0 20px 20px rgba(0,0,0,.3));animation:giftShake 1.2s ease-in-out infinite;grid-area:1/1}
.gift-box.open{animation:giftBurst .5s forwards;pointer-events:none}
.gift-prize{width:min(240px,54vw);grid-area:1/1;opacity:0;pointer-events:none;transform:scale(.2);background:#fff;border-radius:50%;padding:18px;
  box-shadow:0 0 0 10px rgba(255,255,255,.35),0 0 60px 20px rgba(255,230,120,.8)}
.gift-prize.shown{animation:reveal .7s cubic-bezier(.3,1.7,.5,1) forwards}
.gift-label{font-size:1.5rem;font-weight:700;margin:16px 0;text-shadow:0 3px 0 rgba(0,0,0,.2)}

/* ---------- confetti ---------- */
.confetti{position:fixed;top:-20px;z-index:85;width:12px;height:18px;border-radius:3px;pointer-events:none;animation:fall linear forwards}

/* ---------- animations ---------- */
@keyframes bob{50%{transform:translateY(-8px)}}
@keyframes pop{0%{transform:scale(.3);opacity:0}100%{transform:scale(1);opacity:1}}
@keyframes pulse{50%{transform:scale(1.06)}}
@keyframes ring{0%{transform:scale(.9);opacity:.6}100%{transform:scale(1.5);opacity:0}}
@keyframes shake{20%,60%{transform:translateX(-8px)}40%,80%{transform:translateX(8px)}}
@keyframes tada{30%{transform:scale(1.1) rotate(-3deg)}60%{transform:scale(1.1) rotate(3deg)}}
@keyframes rise{to{transform:translateY(calc(-1 * (min(62vh,520px) + 260px)))}}
@keyframes popb{to{transform:scale(1.8);opacity:0}}
@keyframes bump{30%{transform:scale(1.35)}60%{transform:scale(.95)}}
@keyframes streak{0%{transform:translate(-50%,40px) scale(.4);opacity:0}15%{transform:translate(-50%,0) scale(1.1);opacity:1}25%{transform:translate(-50%,0) scale(1)}80%{opacity:1}100%{transform:translate(-50%,-60px);opacity:0}}
@keyframes wiggle{25%{transform:rotate(-5deg)}75%{transform:rotate(5deg)}}
@keyframes spin{to{transform:rotate(360deg)}}
@keyframes giftShake{0%,50%,100%{transform:rotate(0) scale(1)}10%{transform:rotate(-8deg) scale(1.05)}20%{transform:rotate(8deg) scale(1.05)}30%{transform:rotate(-6deg)}40%{transform:rotate(4deg)}}
@keyframes giftBurst{40%{transform:scale(1.3) rotate(-6deg)}100%{transform:scale(2.2) rotate(12deg);opacity:0;filter:brightness(2)}}
@keyframes reveal{0%{opacity:0;transform:scale(.2) rotate(-30deg)}100%{opacity:1;transform:scale(1) rotate(0)}}
@keyframes fall{to{transform:translateY(110vh) rotate(720deg)}}
.shake{animation:shake .4s}
@media (prefers-reduced-motion:reduce){*{animation-duration:.01ms !important;transition:none !important}}