/* Ek Kadam: home screen, swipe player and settings sheet (children#play).
   Soft and playful: pastel grounds, white bubbles, gentle shadows, one warm coral
   for the main action. Sizes scale with the screen (vmin/vh) so the same cards fit
   small phones, big phones, tablets and landscape. */
:root{
  --ink:#3F3A5A; --ink-2:#6E6889; --ink-3:#9A94B3;
  --ground:#F7F5FF; --paper:#FFFFFF; --paper2:#F6F3FF; --line:#E9E5F6;
  /* soft grounds, one per unit (names are what lesson data uses) */
  --marigold:#FFF1C7; --sky:#DDF1FF; --leaf:#E6F6D4; --rose:#FFE5EC; --lilac:#EDE8FF; --tangerine:#FFE9DA; --mint:#DAF5EB;
  /* accents */
  --sun:#FFC94D; --sun-2:#FFB12E; --coral:#FF7E9D; --coral-2:#F45F86; --aqua:#56C2EA; --berry:#9B7BF5; --grass:#45C27F; --grass-2:#2FA868;
  --red:#F4899A; --blue:#8AB8EE; --good:#45C27F; --oops:#FFE1E1; --hl:#FFF4CF;
  --sh-sm:0 2px 8px rgba(84,64,150,.08);
  --sh:0 12px 28px -12px rgba(84,64,150,.30),0 2px 6px rgba(84,64,150,.06);
  --sh-lift:0 18px 36px -14px rgba(84,64,150,.38),0 3px 8px rgba(84,64,150,.08);
  --r-lg:clamp(22px,3.6vmin,36px); --r-md:clamp(16px,2.6vmin,26px);
  --top:78px;
  --btn-h:clamp(54px,8.4vmin,80px);
  --display:"Fredoka","Baloo 2",system-ui,sans-serif;
  color-scheme:light;
}
*{box-sizing:border-box}
[hidden]{display:none!important}
html{font-size:clamp(15px,0.55vw + 13px,19px)}
html,body{height:100%}
body{margin:0;background:var(--ground);color:var(--ink);font-family:"Baloo 2",system-ui,sans-serif;-webkit-tap-highlight-color:transparent;-webkit-text-size-adjust:100%}
body.ek-play{overflow:hidden;overscroll-behavior:none}
button{font:inherit;color:inherit;touch-action:manipulation}
input,select{font:inherit}
:focus-visible{outline:3px solid var(--berry);outline-offset:3px}
.read{font-family:Andika,"Baloo 2","Comic Sans MS",system-ui,sans-serif}
.hi{font-weight:600;color:var(--ink-2);line-height:1.3}
.no-hi .hi{display:none!important}
.dev{font-weight:600}
.ico{display:block;width:1.15em;height:1.15em}

.app{position:relative;height:100%;overflow:hidden}
.app > .home,.app > .player{top:env(safe-area-inset-top,0px);bottom:env(safe-area-inset-bottom,0px)}
.loading{padding:40px 0;text-align:center;font-weight:600;font-size:1.1rem;color:var(--ink-3)}
.app.is-ready .loading{display:none}

/* ---------- Chiku ---------- */
.chiku{display:block;width:100%;height:auto;overflow:visible}
.chiku-body{transform-origin:60px 110px;animation:bob 3.2s ease-in-out infinite}
.chiku-wing-r{transform-origin:100px 66px;animation:wave 3.2s ease-in-out infinite}

/* ---------- shared controls ---------- */
.iconbtn{flex:0 0 auto;width:48px;height:48px;border-radius:50%;border:0;background:var(--paper);color:var(--ink);display:grid;place-items:center;box-shadow:var(--sh);cursor:pointer;padding:0;font-size:22px;transition:transform .15s}
.iconbtn:active{transform:scale(.92)}
.stars{flex:0 0 auto;height:48px;display:flex;align-items:center;gap:6px;padding:0 16px 0 12px;border-radius:999px;background:linear-gradient(180deg,#FFE08A,var(--sun));color:#6B4A00;box-shadow:0 10px 20px -10px rgba(255,177,46,.8),inset 0 2px 0 rgba(255,255,255,.5);font:700 20px/1 var(--display);font-variant-numeric:tabular-nums}
.stars .ico{width:22px;height:22px;color:#fff;filter:drop-shadow(0 1px 1px rgba(160,100,0,.35))}
.stars.bump{animation:pop .5s}

.btn{min-height:var(--btn-h);padding:6px 20px;border:0;border-radius:999px;background:var(--paper);color:var(--ink);font:600 clamp(17px,2.6vmin,25px)/1.1 var(--display);box-shadow:var(--sh);cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:8px;transition:transform .15s,box-shadow .15s}
.btn:active{transform:scale(.96);box-shadow:var(--sh-sm)}
.btn.primary{background:linear-gradient(180deg,#FF9DB6,var(--coral) 55%,var(--coral-2));color:#fff;box-shadow:0 14px 26px -12px rgba(244,95,134,.75),inset 0 -3px 0 rgba(140,20,60,.12),inset 0 2px 0 rgba(255,255,255,.35)}
.btn svg{flex:0 0 auto;font-size:1.15em}
.btn span{white-space:nowrap}
.btn.ghost{background:transparent;box-shadow:none;border:2px dashed var(--line);color:var(--ink-2);font-size:17px;min-height:52px}
.is-done .btn.next{animation:nudge 1.4s ease-in-out infinite;background:linear-gradient(180deg,#8EE0B4,var(--grass));color:#fff}

/* ---------- home ---------- */
.home{position:absolute;inset:0;overflow-y:auto;-webkit-overflow-scrolling:touch;
  background:radial-gradient(circle at 8% 4%,#FFF1C7 0,transparent 32%),radial-gradient(circle at 96% 12%,#E3F2FF 0,transparent 30%),var(--ground)}
.home-in{max-width:1120px;margin:0 auto;padding-inline:max(16px,3.5vw);padding-block:14px 56px;display:flex;flex-direction:column;gap:28px}
.home-top{display:flex;align-items:center;gap:10px}
.brand{flex:1;min-width:0;line-height:1.05}
.brand b{display:block;font:700 1.6rem/1 var(--display);color:var(--ink);letter-spacing:-.01em}
.brand span{font-size:.9rem;font-weight:600;color:var(--ink-2)}
.home-hero{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,300px),1fr));gap:16px}
.hello{grid-column:1/-1;display:flex;align-items:flex-end;gap:14px}
.hello-bird{flex:0 0 auto;width:clamp(84px,17vw,128px)}
.hello-bubble{position:relative;flex:1;min-width:0;background:var(--paper);border-radius:28px;border-bottom-left-radius:8px;padding:14px 20px 16px;box-shadow:var(--sh);margin-bottom:18px}
.greet{margin:0;font:700 clamp(1.8rem,5.6vw,3rem)/1.05 var(--display);color:var(--ink);text-wrap:balance}
.hello-bubble p{margin:2px 0 0;font-weight:600;color:var(--ink-2);font-size:1.05rem}
.cta{display:flex;align-items:center;gap:16px;text-align:left;border:0;border-radius:30px;padding:16px 20px;box-shadow:var(--sh);cursor:pointer;min-height:100px;transition:transform .15s}
.cta:active{transform:scale(.97)}
.cta .ci{flex:0 0 auto;width:62px;height:62px;border-radius:50%;display:grid;place-items:center;font-size:30px;background:rgba(255,255,255,.9);box-shadow:var(--sh-sm)}
.cta .ci .ico{width:30px;height:30px}
.cta .ct{display:flex;flex-direction:column;min-width:0}
.cta small{font-size:.78rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;opacity:.85}
.cta strong{font:700 1.5rem/1.1 var(--display)}
.cta span.s{font-size:.95rem;font-weight:600;opacity:.9}
.cta.go{background:linear-gradient(135deg,#FFA3BA,var(--coral) 60%,#F76C93);color:#fff;box-shadow:0 18px 30px -16px rgba(244,95,134,.9)}
.cta.go .ci{color:var(--coral-2)}
.cta.practice{background:linear-gradient(135deg,#FFE9A8,var(--sun));color:#5C4200}
.cta.practice .ci{color:var(--sun-2)}
.homeStat{grid-column:1/-1;margin:0;font-size:.95rem;font-weight:600;color:var(--ink-3)}
.usec{display:flex;flex-direction:column;gap:14px}
.uhead{display:flex;align-items:center;justify-content:space-between;gap:12px}
.uhead > div{display:flex;flex-direction:column;padding-left:22px;position:relative}
.uhead > div::before{content:"";position:absolute;left:0;top:.3em;width:12px;height:12px;border-radius:50%;background:var(--c);box-shadow:0 0 0 3px var(--paper),0 0 0 4px var(--line)}
.uhead h2{margin:0;font:700 1.5rem/1.1 var(--display);color:var(--ink)}
.uhead .dev{font-size:.92rem;color:var(--ink-2)}
.ustat{font-weight:700;font-variant-numeric:tabular-nums;white-space:nowrap;background:var(--paper);color:var(--ink-2);border-radius:999px;padding:2px 12px;box-shadow:var(--sh-sm)}
.lgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(46%,160px),1fr));gap:14px}
.lt{position:relative;display:flex;flex-direction:column;align-items:flex-start;gap:8px;text-align:left;background:var(--c);border:0;border-radius:26px;padding:14px 14px 12px;box-shadow:var(--sh);cursor:pointer;min-height:140px;transition:transform .15s,box-shadow .15s}
.lt:active{transform:scale(.96)}
.lti{width:52px;height:52px;border-radius:50%;background:var(--paper);display:grid;place-items:center;font-size:28px;line-height:1;box-shadow:var(--sh-sm)}
.lti.read{font-size:20px;font-weight:700;color:var(--ink)}
.ltt{font:600 1.02rem/1.2 var(--display);color:var(--ink);flex:1}
.ltp{width:100%;height:8px;border-radius:999px;background:rgba(255,255,255,.75);overflow:hidden}
.ltp i{display:block;height:100%;border-radius:inherit;background:linear-gradient(90deg,var(--sun),var(--coral))}
.lts{font-size:.8rem;font-weight:700;font-variant-numeric:tabular-nums;color:var(--ink-2)}
.lt.fin{background:var(--paper)}
.lt.fin .ltp i{background:linear-gradient(90deg,#8EE0B4,var(--grass))}
.lt.fin .lts{color:var(--grass-2)}
.lt.next{box-shadow:0 0 0 3px var(--paper),0 0 0 6px var(--coral),var(--sh)}
.lt.next::after{content:"Next";position:absolute;top:-11px;right:12px;background:var(--coral);color:#fff;font:600 .72rem/1 var(--display);letter-spacing:.06em;text-transform:uppercase;padding:5px 10px;border-radius:999px;box-shadow:var(--sh-sm)}

/* ---------- player ---------- */
.player{position:absolute;inset:0;background:var(--ground)}
.ptop{position:absolute;left:0;right:0;top:0;z-index:5;display:flex;align-items:center;gap:10px;padding:12px max(14px,2.5vw);pointer-events:none}
.ptop > *{pointer-events:auto}
.where{flex:1;min-width:0;background:rgba(255,255,255,.94);border-radius:999px;padding:5px 16px 8px;box-shadow:var(--sh)}
.where .u{display:flex;gap:8px;font:600 15px/1.35 var(--display)}
.where .u b{flex:1;min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-weight:600}
.where .u span{color:var(--ink-3);font-variant-numeric:tabular-nums;white-space:nowrap}
.bar{height:7px;background:var(--line);border-radius:999px;overflow:hidden}
.bar i{display:block;height:100%;border-radius:inherit;background:linear-gradient(90deg,var(--sun),var(--coral));width:0;transition:width .4s ease}
.snd{position:absolute;top:calc(var(--top) - 4px);left:50%;transform:translateX(-50%);z-index:6;background:var(--paper);color:var(--ink-2);font-weight:600;font-size:14px;padding:4px 16px;border-radius:999px;box-shadow:var(--sh);pointer-events:none}
.feed{height:100%;overflow-y:auto;scroll-snap-type:y mandatory;overscroll-behavior-y:contain;scrollbar-width:none;-webkit-overflow-scrolling:touch}
.feed::-webkit-scrollbar{display:none}

.card{height:100%;scroll-snap-align:start;scroll-snap-stop:always;position:relative;isolation:isolate;content-visibility:auto;contain-intrinsic-size:auto 100vh;display:flex;flex-direction:column;gap:clamp(10px,2vmin,20px);padding:calc(var(--top) + 4px) max(16px,4vw) clamp(14px,3vmin,30px);background:var(--bg,var(--marigold));overflow:hidden}
/* soft soap-bubble circles behind every card (static: animating them on every card is too heavy for budget phones) */
.card::before{content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;
  background:
    radial-gradient(circle at 12% 22%,rgba(255,255,255,.75) 0 clamp(22px,4.5vmin,54px),transparent calc(clamp(22px,4.5vmin,54px) + 1px)),
    radial-gradient(circle at 86% 14%,rgba(255,255,255,.6) 0 clamp(10px,2.4vmin,26px),transparent calc(clamp(10px,2.4vmin,26px) + 1px)),
    radial-gradient(circle at 92% 74%,rgba(255,255,255,.55) 0 clamp(36px,8vmin,96px),transparent calc(clamp(36px,8vmin,96px) + 1px)),
    radial-gradient(circle at 6% 86%,rgba(255,255,255,.5) 0 clamp(14px,3vmin,34px),transparent calc(clamp(14px,3vmin,34px) + 1px)),
    radial-gradient(circle at 50% 104%,rgba(255,255,255,.45) 0 40%,transparent 40.2%)}
.card > .head,.card > .stage,.card > .actions,.card > .intro{width:100%;max-width:1000px;margin-inline:auto}
.head{display:flex;align-items:center;gap:6px 10px;flex-wrap:wrap;min-height:30px}
.kind{display:inline-flex;align-items:center;gap:6px;font:600 clamp(12px,1.8vmin,16px)/1 var(--display);letter-spacing:.06em;text-transform:uppercase;background:var(--paper);color:var(--ink);padding:7px 14px 7px 10px;border-radius:999px;box-shadow:var(--sh-sm)}
.kind::before{content:"";width:9px;height:9px;border-radius:50%;background:var(--coral)}
.head .hi{font-size:clamp(14px,2.1vmin,19px)}
.got{margin-left:auto;display:grid;place-items:center;width:34px;height:34px;border-radius:50%;background:linear-gradient(180deg,#FFE08A,var(--sun));color:#fff;font-size:18px;box-shadow:var(--sh-sm);opacity:0;transform:scale(.4);transition:opacity .3s,transform .35s cubic-bezier(.3,1.6,.5,1)}
.is-done .got{opacity:1;transform:none}
.stage{flex:1;min-height:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:clamp(12px,3vmin,36px);text-align:center}
.vis,.ask{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:clamp(8px,2.2vmin,22px);min-width:0;min-height:0;width:100%}
.actions{display:flex;gap:clamp(10px,1.6vmin,16px)}
.actions .btn{flex:1}
.actions .btn.icon{flex:0 0 var(--btn-h);padding:0}

/* pictures */
.emo{line-height:1.1;display:inline-block}
.hero{font-size:clamp(60px,min(23vw,16.5vh),184px)}
.mid{font-size:clamp(48px,11vmin,116px)}
.emo.hero{display:inline-grid;place-items:center;min-width:1.5em;height:1.5em;padding:0 .2em;border-radius:.75em;line-height:1;
  background:radial-gradient(circle at 35% 28%,#fff 0 58%,rgba(255,255,255,.82));box-shadow:var(--sh-lift)}
.swatch{display:inline-block;width:1em;height:1em;border-radius:.26em;background:var(--sw);box-shadow:inset 0 0 0 .05em rgba(255,255,255,.7),0 .08em .2em rgba(84,64,150,.25)}
.shape{display:inline-block;width:1em;height:1em;filter:drop-shadow(0 .05em .1em rgba(84,64,150,.25))}
.shape svg{width:100%;height:100%;display:block}
.num{display:inline-flex;flex-direction:column;align-items:center;gap:.08em}
.num b{font-family:Andika,"Baloo 2",system-ui,sans-serif;font-size:.72em;line-height:1;color:var(--ink)}
.num .dots{display:flex;flex-wrap:wrap;justify-content:center;gap:.05em;max-width:2.3em}
.num .dots i{width:.14em;height:.14em;border-radius:50%;background:radial-gradient(circle at 35% 30%,#FFB3C4,var(--coral))}
.day{display:inline-flex;flex-direction:column;width:1.25em;background:var(--paper);border-radius:.16em;overflow:hidden;line-height:1;box-shadow:var(--sh)}
.day span{background:var(--coral);color:#fff;font-size:.14em;font-weight:700;letter-spacing:.1em;padding:.3em 0}
.day b{font:700 .36em/1 var(--display);padding:.28em 0;color:var(--ink)}
/* number sentences and short text as a picture: "7 + 2", "₹10", "½" */
.bigtext{display:inline-grid;place-items:center;min-width:1.6em;padding:.12em .45em;border-radius:.4em;background:radial-gradient(circle at 35% 28%,#fff 0 58%,rgba(255,255,255,.85));box-shadow:var(--sh-lift);font-weight:700;line-height:1.1;color:var(--ink);white-space:nowrap}
.bigtext.hero{font-size:clamp(40px,min(13vw,10vh),112px)}
.choice .bigtext{font-size:.8em;box-shadow:none;background:none}
/* counting pictures: objects in rows of five inside a white bubble */
.mpic{display:inline-flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:.12em;max-width:100%;padding:.12em .2em;border-radius:.3em;background:radial-gradient(circle at 35% 28%,#fff 0 58%,rgba(255,255,255,.85));box-shadow:var(--sh-lift)}
.mpic.hero{font-size:clamp(60px,min(23vw,16.5vh),184px)}
.mpic > b{font:700 .38em/1 var(--display);color:var(--coral-2)}
.count{display:inline-grid;grid-template-columns:repeat(var(--c),auto);gap:.02em .04em;font-size:.36em;line-height:1.15}
.mpic.many .count{font-size:.26em;padding:.1em;border-radius:.3em;background:var(--ground)}
.mpic:has(> b) .count{font-size:.32em}
.count i{font-style:normal;position:relative}
.count i.x{opacity:.35}
.count i.x::after{content:"";position:absolute;left:0;right:0;top:48%;height:.1em;border-radius:.1em;background:var(--coral-2);transform:rotate(-35deg)}
.choice .mpic{box-shadow:none;background:none;font-size:.9em}

/* intro / done */
.intro{flex:1;display:flex;flex-direction:column;justify-content:center;align-items:flex-start;gap:clamp(6px,1.4vmin,14px);min-height:0}
.intro-art{position:relative;display:flex;align-items:flex-end;gap:clamp(8px,2vmin,18px);margin-bottom:6px}
.intro-icon{display:grid;place-items:center;width:1.55em;height:1.55em;font-size:clamp(52px,13vmin,130px);line-height:1;border-radius:50%;background:radial-gradient(circle at 35% 28%,#fff 0 58%,rgba(255,255,255,.82));box-shadow:var(--sh-lift)}
.intro-icon.read{font-size:clamp(36px,9vmin,92px);font-weight:700;color:var(--ink)}
.intro-bird{width:clamp(70px,15vmin,150px);margin-bottom:-6px}
.eyebrow{font:600 clamp(13px,2vmin,18px)/1.2 var(--display);letter-spacing:.1em;text-transform:uppercase;color:var(--ink-2)}
.intro h2{margin:0;font:700 clamp(36px,8vmin,88px)/1 var(--display);color:var(--ink);text-wrap:balance}
.intro .dev{font-size:clamp(18px,3.2vmin,30px);color:var(--ink-2)}
.intro p{margin:0;font-size:clamp(18px,3vmin,27px);line-height:1.4;font-weight:600;max-width:34ch;color:var(--ink)}
.donestars{color:var(--sun-2)!important;font-family:var(--display)}
.swipe{position:absolute;left:0;right:0;bottom:calc(clamp(14px,3vmin,30px) + var(--btn-h) + 10px);text-align:center;font-weight:600;font-size:13px;color:var(--ink-3);animation:float 1.8s ease-in-out infinite;pointer-events:none}

/* letter */
.bigl{font:700 clamp(92px,29vmin,290px)/1 Andika,"Baloo 2",system-ui,sans-serif;background:none;border:0;color:var(--ink);cursor:pointer;padding:0;display:flex;align-items:baseline;gap:.08em;text-shadow:0 .04em 0 #fff,0 .08em .12em rgba(84,64,150,.18)}
.bigl .lo{font-size:.78em;color:var(--coral-2)}
.wlist{display:flex;flex-direction:column;gap:clamp(8px,1.6vmin,14px);width:100%;max-width:520px}
.wrow,.row{display:flex;align-items:center;gap:clamp(10px,2vmin,18px);background:var(--paper);border:0;border-radius:999px;padding:6px 22px 6px 8px;cursor:pointer;text-align:left;box-shadow:var(--sh);transition:transform .2s,box-shadow .2s,background .2s}
.wrow .emo,.row .emo{display:grid;place-items:center;flex:0 0 auto;width:1.4em;height:1.4em;border-radius:50%;background:var(--ground);font-size:clamp(28px,6vmin,56px)}
.wt{display:flex;flex-direction:column;line-height:1.1}
.wrow .w{font-size:clamp(24px,5vmin,50px);font-weight:700}
.wrow .w b{color:var(--coral-2)}
.wrow .hi{font-size:clamp(13px,2.1vmin,19px)}
.wrow.on,.row.on{background:var(--hl);transform:scale(1.03);box-shadow:0 0 0 3px var(--sun),var(--sh-lift)}

/* item */
.picbtn{background:none;border:0;padding:0;cursor:pointer;line-height:1}
.ex .emo{font-size:clamp(38px,9vmin,92px)}
.vis:has(.ex){flex-direction:row;gap:clamp(10px,3vmin,30px)}
.wbig{font:700 clamp(44px,11.5vmin,120px)/1.05 Andika,"Baloo 2",system-ui,sans-serif;background:none;border:0;cursor:pointer;padding:0;color:var(--ink)}
.hi-big{font-size:clamp(17px,3.3vmin,30px)}
.sent{font-size:clamp(21px,4.8vmin,44px);line-height:1.3;background:var(--paper);border:0;border-radius:var(--r-lg);padding:.35em .9em;cursor:pointer;box-shadow:var(--sh);max-width:100%;color:var(--ink)}
.sent mark{background:linear-gradient(transparent 60%,#FFE08A 60%);color:inherit;font-weight:700;border-radius:4px}

/* pair */
.vis.pairs{flex-direction:row;align-items:stretch;gap:clamp(8px,2vmin,20px)}
.pp{flex:1 1 0;min-width:0;max-width:300px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;background:var(--paper);border:0;border-radius:var(--r-lg);padding:12px 8px;cursor:pointer;box-shadow:var(--sh);transition:transform .2s,box-shadow .2s}
.pp .w{font-size:clamp(26px,5.8vmin,56px);font-weight:700;line-height:1.1}
.pp .hi{font-size:clamp(14px,2.4vmin,22px)}
.pp.on{transform:scale(1.05);box-shadow:0 0 0 3px var(--sun),var(--sh-lift);background:var(--hl)}
.vs{align-self:center;font:700 clamp(22px,4vmin,40px)/1 var(--display);color:var(--ink-3)}

/* blend */
/* tiles shrink with the number of letters (--tn) so a word always stays on one line */
.tiles{--rowmax:86vw;display:flex;gap:clamp(6px,1.4vmin,14px);justify-content:center}
.tile{font:700 min(clamp(40px,12.5vmin,120px),calc(var(--rowmax) / (var(--tn,3) * 1.55)))/1 Andika,"Baloo 2",system-ui,sans-serif;min-width:1.3em;height:1.3em;padding:0 .14em;display:grid;place-items:center;background:var(--paper);color:var(--ink);border:0;border-radius:.3em;box-shadow:var(--sh);cursor:pointer;transition:transform .2s cubic-bezier(.3,1.6,.5,1),background .2s}
.tile.dg{background:#FFF7DD}
.tile.on{background:linear-gradient(180deg,#FFE08A,var(--sun));transform:translateY(-10px) rotate(-3deg);box-shadow:var(--sh-lift)}
.whole{opacity:.25;transition:opacity .4s,transform .4s}
.whole.on{opacity:1;transform:scale(1.06)}
.reveal{filter:blur(16px) saturate(.2);opacity:.5;transform:scale(.9);transition:filter .6s,opacity .6s,transform .6s cubic-bezier(.3,1.6,.5,1)}
.reveal.on{filter:none;opacity:1;transform:none}

/* sight, sentences, talk, act, rhyme */
.sightw{font:700 clamp(80px,24vmin,250px)/1 Andika,"Baloo 2",system-ui,sans-serif;background:none;border:0;cursor:pointer;padding:0;color:var(--ink);text-shadow:0 .04em 0 #fff,0 .08em .12em rgba(84,64,150,.18)}
.sws{display:flex;flex-wrap:wrap;justify-content:center;gap:clamp(6px,1.4vmin,14px)}
.sw{font-size:clamp(26px,6.2vmin,62px);padding:.02em .4em;border-radius:.5em;background:var(--paper);border:0;box-shadow:var(--sh);cursor:pointer;line-height:1.3;color:var(--ink);transition:transform .2s,background .2s}
.sw.on{background:linear-gradient(180deg,#FFE08A,var(--sun));transform:translateY(-4px)}
.talkbox{align-items:stretch;max-width:640px}
.bub{display:flex;align-items:center;gap:10px;padding:.4em .8em;border:0;border-radius:1.1em;background:var(--paper);font-size:clamp(21px,4.6vmin,42px);line-height:1.2;cursor:pointer;text-align:left;box-shadow:var(--sh);max-width:92%;color:var(--ink);transition:transform .2s,box-shadow .2s}
.bub .who{font-size:1.05em;line-height:1}
.bub.q{align-self:flex-start;border-bottom-left-radius:.3em}
.bub.a{align-self:flex-end;background:#FFF6D6;border-bottom-right-radius:.3em}
.bub.on{transform:scale(1.04);box-shadow:0 0 0 3px var(--sun),var(--sh-lift)}
.talkbox .hi{text-align:center}
.cmd{font-size:clamp(28px,6.6vmin,66px);font-weight:700;line-height:1.15;background:var(--paper);border:0;border-radius:var(--r-lg);padding:.25em .7em;cursor:pointer;box-shadow:var(--sh);color:var(--ink)}
.rlines{display:flex;flex-direction:column;gap:4px;width:100%;max-width:760px}
.rl{font-size:clamp(21px,4.6vmin,44px);line-height:1.3;padding:.2em .6em;border-radius:999px;background:transparent;border:0;cursor:pointer;color:var(--ink);transition:background .2s,box-shadow .2s}
.rl.on{background:var(--paper);box-shadow:var(--sh)}
.stage.full .rl{font-size:clamp(16px,3vmin,30px);padding:.08em .5em}
.agrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(clamp(42px,10.5vmin,96px),1fr));gap:clamp(6px,1.2vmin,12px);width:100%;max-width:900px}
.gl{aspect-ratio:1;font:700 clamp(22px,5.4vmin,52px)/1 Andika,"Baloo 2",system-ui,sans-serif;background:var(--paper);color:var(--ink);border:0;border-radius:30%;cursor:pointer;display:grid;place-items:center;padding:0;box-shadow:var(--sh-sm);transition:transform .15s,background .15s}
.gl.on{background:linear-gradient(180deg,#FFE08A,var(--sun));transform:scale(1.12)}
.rows{display:flex;flex-direction:column;gap:clamp(8px,1.6vmin,14px);width:100%;max-width:640px}
.row .l{font-size:clamp(28px,5.8vmin,56px);font-weight:700;min-width:1.7em;color:var(--coral-2)}
.row .w{flex:1;font-size:clamp(19px,4.2vmin,40px);line-height:1.2}
.row.big .w{font-size:clamp(28px,6.2vmin,60px);font-weight:700}

/* choices */
.prompt{display:flex;align-items:center;justify-content:center;gap:10px;font:600 clamp(20px,4.2vmin,40px)/1.25 var(--display);flex-wrap:wrap;text-wrap:balance;color:var(--ink)}
.prompt b{background:var(--paper);border-radius:999px;padding:0 .45em;box-shadow:var(--sh-sm);font-family:Andika,"Baloo 2",system-ui,sans-serif}
.target{font-size:1.45em;line-height:1.15;background:var(--paper);border-radius:.4em;padding:0 .4em;box-shadow:var(--sh-sm);color:var(--coral-2)}
.bigl.read:not(button){font-size:clamp(92px,27vmin,270px)}
.readword{font:700 clamp(62px,16.5vmin,168px)/1 Andika,"Baloo 2",system-ui,sans-serif;color:var(--ink);text-shadow:0 .04em 0 #fff,0 .08em .12em rgba(84,64,150,.18)}
.matchsent{font-size:clamp(25px,5.8vmin,56px);line-height:1.25;font-weight:700;background:var(--paper);border-radius:var(--r-lg);padding:.25em .7em;box-shadow:var(--sh)}
.gapword{font-size:1.9em;letter-spacing:.06em}
.gapsent{font-size:1.05em;background:var(--paper);border-radius:var(--r-lg);padding:.25em .7em;box-shadow:var(--sh)}
.gap{color:var(--coral-2);font-weight:800}
.choices{display:grid;grid-template-columns:repeat(var(--n,3),minmax(0,1fr));gap:clamp(10px,2.2vmin,22px);width:100%;max-width:680px}
.choice{aspect-ratio:1;max-width:100%;border:0;border-radius:var(--r-lg);background:var(--paper);box-shadow:var(--sh);font-size:clamp(42px,12vmin,120px);line-height:1;display:grid;place-items:center;cursor:pointer;color:var(--ink);padding:4px;font-weight:700;overflow:hidden;transition:transform .2s cubic-bezier(.3,1.6,.5,1),box-shadow .2s,background .2s}
.choice:active{transform:scale(.94)}
.choice .emo,.choice .swatch,.choice .shape,.choice .num,.choice .day{font-size:1.3em}
.choices.txt .choice .emo{font-size:1em}
.choices.txt .choice{aspect-ratio:auto;min-height:clamp(70px,12vmin,128px);font-size:clamp(23px,5.2vmin,48px)}
.choices.long{grid-template-columns:1fr;max-width:620px}
.choices.long .choice{min-height:clamp(54px,8.2vmin,84px);font-size:clamp(19px,3.9vmin,35px);display:flex;justify-content:flex-start;text-align:left;padding:4px 24px;border-radius:999px}
.choice.right{background:linear-gradient(180deg,#8EE0B4,var(--grass));color:#fff;transform:scale(1.06);box-shadow:0 0 0 5px rgba(69,194,127,.25),var(--sh-lift)}
.choice.wrong{animation:wobble .5s ease;background:var(--oops)}
.choice[disabled]{cursor:default}
.choice[disabled]:not(.right){opacity:.55}

/* trace */
.t-trace .stage{align-items:stretch}
.pad{position:relative;width:100%;flex:1;min-height:170px;background:var(--paper);border:0;border-radius:var(--r-lg);overflow:hidden;touch-action:none;box-shadow:var(--sh-lift)}
@media (orientation:portrait){.t-trace .stage{justify-content:center}.pad{flex:0 1 auto;height:100%;max-height:min(620px,96vw,100%)}}
.pad canvas{position:absolute;inset:0;width:100%;height:100%;display:block}
.padmsg{position:absolute;left:50%;bottom:12px;transform:translateX(-50%);background:var(--ground);color:var(--ink-2);font:600 clamp(14px,2.2vmin,19px)/1.2 var(--display);padding:6px 16px;border-radius:999px;white-space:nowrap;pointer-events:none;max-width:92%;overflow:hidden;text-overflow:ellipsis}
.padmsg.good{background:linear-gradient(180deg,#8EE0B4,var(--grass));color:#fff}

/* cheers */
.burst{position:absolute;left:50%;top:50%;pointer-events:none;z-index:4}
.burst i{position:absolute;width:12px;height:12px;border-radius:50%;background:var(--c);animation:fly 1s ease-out forwards}
.burst i:nth-child(3n){border-radius:3px;width:9px;height:14px}
.cheer{position:absolute;left:50%;top:42%;transform:translate(-50%,-50%);z-index:4;pointer-events:none;display:flex;align-items:center;gap:10px;background:var(--paper);border-radius:999px;padding:6px 26px 6px 8px;font:700 clamp(24px,4.8vmin,46px)/1 var(--display);color:var(--coral-2);white-space:nowrap;box-shadow:var(--sh-lift);animation:cheer 1.5s cubic-bezier(.3,1.4,.5,1) forwards}
.cheer-bird{width:clamp(48px,8vmin,78px)}
.lit{animation:pop .5s}

/* ---------- landscape: picture beside the task ---------- */
@media (orientation:landscape) and (min-aspect-ratio:5/4){
  .stage{flex-direction:row;align-items:center}
  .stage > .vis,.stage > .ask{flex:1 1 0}
  .t-trace .stage{flex-direction:column}
  .tiles{--rowmax:min(470px,42vw)}
}
/* ---------- short landscape phones: buttons move to the side ---------- */
@media (orientation:landscape) and (max-height:540px){
  :root{--top:62px;--btn-h:50px}
  .ptop{padding-block:6px}
  .iconbtn,.stars{height:42px}
  .iconbtn{width:42px}
  .card{display:grid;grid-template-columns:minmax(0,1fr) clamp(150px,24vw,220px);grid-template-rows:auto minmax(0,1fr);column-gap:16px;row-gap:8px;padding-bottom:12px}
  .card > .head{grid-column:1/-1}
  .card > .stage{grid-column:1;grid-row:2}
  .card > .intro{grid-column:1;grid-row:1/-1}
  .card > .actions{grid-column:2;grid-row:2;flex-direction:column;justify-content:center;align-self:center}
  .card > .actions .btn,.card > .actions .btn.icon{flex:0 0 auto;width:100%}
  .swipe{display:none}
  .hero{font-size:clamp(48px,21vh,120px)}
  .intro-icon{font-size:clamp(40px,15vh,90px)}
  .intro-bird{width:clamp(56px,20vh,110px)}
  .choices{max-width:calc(118vh + 40px)}
  .choices.txt,.choices.long{max-width:680px}
  .bigl{font-size:clamp(76px,32vh,190px)}
  .cta{min-height:84px}
  .tiles{--rowmax:calc((100vw - 48px - clamp(150px,24vw,220px)) / 2 - 12px)}
  .actions .btn{font-size:16px;padding-inline:12px;gap:6px}
}
/* ---------- very small phones (e.g. 320 px wide) ---------- */
@media (max-width:360px){
  :root{--top:70px}
  .ptop{gap:6px;padding-inline:10px}
  .iconbtn{width:42px;height:42px}
  .stars{height:42px;padding:0 12px 0 9px;font-size:18px}
  .where{padding:4px 12px 7px}
  .card{padding-inline:12px}
  .hello-bird{width:72px}
  .actions .btn{font-size:16px;padding-inline:12px;gap:6px}
}

/* ---------- settings sheet ---------- */
.sheet{position:absolute;inset:0;z-index:20;background:rgba(63,58,90,.42);display:flex;align-items:flex-end;justify-content:center}
.panel{width:100%;max-width:640px;max-height:90%;overflow:auto;background:var(--paper);border-radius:32px 32px 0 0;padding:18px 22px calc(28px + env(safe-area-inset-bottom,0px));display:flex;flex-direction:column;gap:14px;box-shadow:0 -10px 40px rgba(84,64,150,.2);animation:rise .3s cubic-bezier(.3,1.2,.5,1)}
@media (min-width:700px) and (min-height:700px){.sheet{align-items:center}.panel{border-radius:32px;max-height:86%}}
.panel-head{display:flex;align-items:center;justify-content:space-between}
.panel h2{margin:0;font:700 1.6rem/1 var(--display)}
.panel h3{margin:8px 0 0;font:600 .82rem/1 var(--display);letter-spacing:.1em;text-transform:uppercase;color:var(--ink-3)}
.panel .iconbtn{box-shadow:none;background:var(--ground)}
.field{display:flex;flex-direction:column;gap:4px;font-weight:700}
.field small{font-weight:600;color:var(--ink-2)}
.field input[type=text],.field input[type=email],.field input[type=password],.field select{min-height:54px;border:2px solid var(--line);border-radius:18px;padding:6px 14px;background:#fff;color:var(--ink);width:100%;transition:border-color .15s,box-shadow .15s}
.field input:focus,.field select:focus{outline:none;border-color:var(--berry);box-shadow:0 0 0 4px rgba(155,123,245,.18)}
.two{display:grid;grid-template-columns:2fr 1fr;gap:12px}
.opt{display:flex;align-items:center;gap:12px;font-size:1.05rem;font-weight:600;padding:4px 0;cursor:pointer}
.opt input{width:24px;height:24px;accent-color:var(--grass)}
.opt small{color:var(--ink-2);font-size:.95rem}
.seg{display:flex;gap:8px;background:var(--ground);padding:5px;border-radius:999px}
.seg label{flex:1;display:flex;align-items:center;justify-content:center;gap:8px;min-height:48px;border-radius:999px;font-weight:700;cursor:pointer;color:var(--ink-2);transition:background .15s,box-shadow .15s}
.seg input{position:absolute;opacity:0;pointer-events:none}
.seg label:has(input:checked){background:var(--paper);color:var(--ink);box-shadow:var(--sh-sm)}
.seg label:focus-within{outline:3px solid var(--berry);outline-offset:2px}
.voicerow{display:flex;gap:10px}
.voicerow select{flex:1;min-width:0}
.voicerow .btn{flex:0 0 auto;min-height:54px;font-size:18px}
.help{background:var(--ground);border-radius:20px;padding:12px 16px;font-size:.95rem;line-height:1.5}
.help summary{font-weight:700;cursor:pointer}
.help ol{margin:6px 0 0;padding-left:20px}
.warn{margin:0;padding:10px 14px;background:var(--oops);border-radius:16px;font-weight:600;line-height:1.4}
.sheet-links{display:flex;gap:10px;flex-wrap:wrap}
.sheet-links a,.sheet-links button{flex:1;min-width:140px;text-decoration:none;text-align:center}

@keyframes pop{0%{transform:scale(1)}40%{transform:scale(1.12)}100%{transform:scale(1)}}
@keyframes wobble{0%,100%{transform:rotate(0)}20%{transform:rotate(-5deg) scale(.97)}45%{transform:rotate(4deg)}70%{transform:rotate(-2deg)}}
@keyframes fly{from{transform:translate(0,0) scale(1) rotate(0)}to{transform:translate(var(--x),var(--y)) scale(.4) rotate(300deg);opacity:0}}
@keyframes cheer{0%{opacity:0;transform:translate(-50%,-20%) scale(.6)}18%{opacity:1;transform:translate(-50%,-50%) scale(1.06)}30%{transform:translate(-50%,-50%) scale(1)}78%{opacity:1}100%{opacity:0;transform:translate(-50%,-75%) scale(.96)}}
@keyframes nudge{0%,100%{transform:translateY(0)}50%{transform:translateY(5px)}}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-6px)}}
@keyframes bob{0%,100%{transform:translateY(0) rotate(0)}50%{transform:translateY(-4px) rotate(-2deg)}}
@keyframes wave{0%,70%,100%{transform:rotate(0)}80%{transform:rotate(-18deg)}90%{transform:rotate(6deg)}}
@keyframes rise{from{transform:translateY(24px);opacity:.4}to{transform:none;opacity:1}}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important}}