:root{
  --bg:#eaf6ee; --bg2:#d9efe1; --card:#fff; --ink:#1f2733; --muted:#5b6b63;
  --brand:#1a936f; --brand-d:#157a5c; --sun:#ffc94a; --err:#c0392b; --errbg:#fbeae8;
  --r:24px; --shadow:0 8px 28px rgba(20,70,45,.10);
  --safe-t:env(safe-area-inset-top,0px); --safe-b:env(safe-area-inset-bottom,0px);
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;height:100%;overscroll-behavior:none}
body{background:var(--bg);color:var(--ink);font-family:"Baloo 2",ui-rounded,"SF Pro Rounded",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;font-size:17px;-webkit-user-select:none;user-select:none;-webkit-touch-callout:none}
input{-webkit-user-select:text;user-select:text}
button{font-family:inherit;cursor:pointer;color:inherit}
.hidden{display:none!important}
#app{min-height:100%}
.screen{min-height:100vh;min-height:100dvh;display:flex;flex-direction:column;padding:calc(14px + var(--safe-t)) 16px calc(18px + var(--safe-b));max-width:760px;margin:0 auto;animation:fadein .25s ease}
.center{align-items:center;justify-content:center;text-align:center}
@keyframes fadein{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.logo-big{font-size:72px;line-height:1}
h1{font-size:26px;margin:6px 0 4px} h2{font-size:24px;margin:0 0 14px}
.vi{display:block;font-size:.82em;color:var(--muted);font-weight:500}
.muted{color:var(--muted)}

/* top bar */
.topbar{display:flex;align-items:center;gap:10px;margin-bottom:10px;min-height:56px}
.topbar .grow{flex:1}
.me{display:flex;align-items:center;gap:10px;background:var(--card);border:none;border-radius:999px;padding:6px 16px 6px 6px;box-shadow:var(--shadow);font-weight:700;font-size:18px}
.me .av{font-size:36px;line-height:1;width:46px;height:46px;display:grid;place-items:center;background:var(--bg2);border-radius:50%}

/* hold-to-open parent lock */
.lock{position:relative;width:52px;height:52px;border-radius:50%;border:none;background:var(--card);box-shadow:var(--shadow);font-size:22px;display:grid;place-items:center;touch-action:none}
.lock::before{content:"";position:absolute;inset:-4px;border-radius:50%;background:conic-gradient(var(--brand) calc(var(--p,0)*360deg),transparent 0);-webkit-mask:radial-gradient(circle,transparent 27px,#000 28px);mask:radial-gradient(circle,transparent 27px,#000 28px)}
.lock-tip{position:fixed;left:50%;top:calc(80px + var(--safe-t));transform:translateX(-50%);background:var(--ink);color:#fff;border-radius:14px;padding:8px 14px;font-size:14px;z-index:30;white-space:nowrap}

/* buttons */
.btn{display:flex;align-items:center;justify-content:center;gap:10px;width:100%;border:none;border-radius:18px;padding:17px 18px;font-size:19px;font-weight:700;background:var(--brand);color:#fff;box-shadow:0 5px 0 var(--brand-d);margin-bottom:12px}
.btn:active{transform:translateY(3px);box-shadow:0 2px 0 var(--brand-d)}
.btn.ghost{background:var(--card);color:var(--ink);box-shadow:0 5px 0 #cfe3d7}
.btn.danger{background:var(--card);color:var(--err);box-shadow:0 5px 0 #f0d3cf}
.btn:disabled{opacity:.5}
.btn .ico{font-size:26px}
.link{background:none;border:none;color:var(--brand-d);font-weight:700;font-size:16px;padding:12px}
.panel{background:var(--card);border-radius:var(--r);padding:20px;box-shadow:var(--shadow);width:100%;margin-bottom:14px}

/* forms (parent-facing) */
label.f{display:block;font-weight:700;margin-bottom:14px;text-align:left}
label.f input{display:block;width:100%;margin-top:6px;padding:14px;border:2px solid #cfe3d7;border-radius:14px;font-size:21px;font-family:ui-monospace,Consolas,monospace;background:#fff}
label.f input:focus{outline:none;border-color:var(--brand)}
.err{background:var(--errbg);color:var(--err);border-radius:14px;padding:10px 12px;margin-bottom:14px;font-size:15px;text-align:left}

/* who's playing */
.kids{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;width:100%}
.kid{background:var(--card);border:4px solid transparent;border-radius:28px;padding:18px 8px 14px;box-shadow:var(--shadow);text-align:center}
.kid:active{border-color:var(--brand);transform:scale(.97)}
.kid .av{font-size:76px;line-height:1.1}
.kid .nm{font-weight:800;font-size:20px;margin-top:4px}

/* home */
.hello{display:flex;align-items:center;gap:14px;margin:8px 4px 16px}
.hello .wave{font-size:34px;animation:wave 1.6s ease-in-out 2}
@keyframes wave{0%,100%{transform:rotate(0)}25%{transform:rotate(18deg)}75%{transform:rotate(-12deg)}}
.hello h1{margin:0;font-size:30px}
.tiles{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.tile{position:relative;aspect-ratio:1/1;border:none;border-radius:28px;background:var(--card);box-shadow:var(--shadow);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;font-weight:800;font-size:19px}
.tile .pic{font-size:64px;line-height:1}
.tile.soon{opacity:.55}
.tile .badge{position:absolute;top:10px;right:10px;background:var(--sun);color:#5a4500;border-radius:999px;font-size:12px;padding:3px 9px;font-weight:800}
.growing{text-align:center;padding:26px 16px}
.growing .pot{font-size:64px;display:inline-block;animation:bob 2.4s ease-in-out infinite}
@keyframes bob{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}

/* install guide */
.steps{counter-reset:s;list-style:none;padding:0;margin:0;text-align:left}
.steps li{counter-increment:s;display:flex;gap:12px;align-items:flex-start;margin-bottom:14px}
.steps li::before{content:counter(s);flex:none;width:32px;height:32px;border-radius:50%;background:var(--brand);color:#fff;font-weight:800;display:grid;place-items:center}
.ios-share{display:inline-block;border:2px solid var(--brand);border-radius:6px;padding:0 5px;font-size:14px;color:var(--brand);font-weight:800}
.cred{font-family:ui-monospace,Consolas,monospace;font-size:20px;font-weight:700;background:var(--bg);border-radius:10px;padding:6px 10px;display:inline-block;margin:2px 0}

/* scanner */
.scan{position:fixed;inset:0;background:#000;z-index:20;display:flex;flex-direction:column}
.scan video{flex:1;width:100%;object-fit:cover}
.scan .frame{position:absolute;left:50%;top:45%;width:min(70vw,300px);aspect-ratio:1/1;transform:translate(-50%,-50%);border:4px solid #fff;border-radius:28px;box-shadow:0 0 0 100vmax rgba(0,0,0,.45)}
.scan .msg{position:absolute;left:0;right:0;top:calc(20px + var(--safe-t));text-align:center;color:#fff;font-weight:700;font-size:18px;padding:0 20px}
.scan .bar{position:absolute;left:16px;right:16px;bottom:calc(20px + var(--safe-b))}

/* dialog sheet */
.sheet-bg{position:fixed;inset:0;background:rgba(20,40,30,.4);display:flex;align-items:flex-end;justify-content:center;z-index:40}
.sheet{background:#fff;border-radius:28px 28px 0 0;padding:22px 18px calc(18px + var(--safe-b));width:100%;max-width:520px;animation:up .2s ease}
@keyframes up{from{transform:translateY(40px)}to{transform:none}}
.sheet p{font-size:18px;text-align:center;margin:0 0 18px}

.toast{position:fixed;left:50%;bottom:calc(24px + var(--safe-b));transform:translateX(-50%);background:var(--ink);color:#fff;padding:12px 18px;border-radius:14px;font-size:15px;z-index:50;max-width:90vw;text-align:center}
.row{display:flex;gap:10px;justify-content:center;flex-wrap:wrap}
.foot{margin-top:auto;padding-top:14px;text-align:center;font-size:12px;color:var(--muted)}
.list{width:100%}
.list .item{display:flex;align-items:center;gap:12px;background:var(--card);border-radius:20px;padding:12px 14px;margin-bottom:10px;box-shadow:var(--shadow);text-align:left}
.list .item .av{font-size:40px}
.list .item .grow{flex:1;font-weight:700}
.list .item small{display:block;font-weight:500;color:var(--muted)}
.list .item .link{padding:8px 4px;color:var(--err)}

/* tablets */
@media (min-width:700px){
  .kids{grid-template-columns:repeat(3,1fr)}
  .tiles{grid-template-columns:repeat(3,1fr)}
}
@media (min-width:1000px){ .tiles{grid-template-columns:repeat(4,1fr)} }
@media (prefers-reduced-motion:reduce){ *{animation:none!important;transition:none!important} }
.btn .vi{color:rgba(255,255,255,.88)}
.btn.ghost .vi,.btn.danger .vi{color:var(--muted)}

/* lessons */
.hero{position:relative;width:100%;border:none;border-radius:30px;background:var(--card);box-shadow:var(--shadow);padding:0;overflow:hidden;display:flex;flex-direction:column;margin-bottom:16px;text-align:left}
.hero-pic{width:100%;aspect-ratio:16/10;object-fit:contain;background:#f6fbf8}
.hero-txt{padding:12px 18px 16px;position:relative}
.hero .new{position:absolute;top:-16px;right:16px;background:var(--sun);color:#5a4500;border-radius:999px;font-size:13px;font-weight:800;padding:4px 12px}
.lnum{font-size:15px;font-weight:800;color:var(--brand-d);text-transform:uppercase;letter-spacing:.04em}
.ltitle{font-size:24px;font-weight:800;line-height:1.15}
.stars{position:absolute;right:16px;bottom:14px;font-size:28px}
.tile.lesson,.tile.act{justify-content:flex-end;padding:10px 10px 14px;overflow:hidden}
.tile .tile-pic{width:100%;flex:1;min-height:0;object-fit:contain}
.tile .ltitle{font-size:18px}
.tile .lnum{font-size:12px}
.tile .kind{font-size:14px;color:var(--muted)}
.tile .tick{position:absolute;top:8px;right:10px;font-size:22px}
.round{width:52px;height:52px;border-radius:50%;border:none;background:var(--card);box-shadow:var(--shadow);font-size:24px;font-weight:800}
.lhead{text-align:center;margin:0 0 14px} .lhead h1{margin:2px 0 0}

/* flashcard viewer */
.viewer{position:fixed;inset:0;background:var(--bg);display:flex;flex-direction:column;padding:calc(12px + var(--safe-t)) 12px calc(16px + var(--safe-b))}
.loading{flex:1;display:grid;place-items:center}
.pot{font-size:64px;animation:bob 1.6s ease-in-out infinite}
.vtop{display:flex;align-items:center;gap:12px;min-height:56px}
.dots{flex:1;display:flex;gap:7px;justify-content:center;flex-wrap:wrap;padding-right:52px}
.dots span{width:12px;height:12px;border-radius:50%;background:#c9dfd1}
.dots span.was{background:#8fcdb2}.dots span.on{background:var(--brand);transform:scale(1.3)}
.vmain{flex:1;display:grid;grid-template-columns:1fr 1.6fr;grid-template-rows:minmax(0,1fr) auto;grid-template-areas:"card card" "prev next";gap:12px;min-height:0;margin-top:6px}
.fcard{grid-area:card;height:100%;background:var(--card);border-radius:34px;box-shadow:var(--shadow);display:flex;flex-direction:column;align-items:center;justify-content:center;padding:18px;touch-action:pan-y;cursor:pointer;min-width:0}
.fcard img{width:100%;flex:1;min-height:0;object-fit:contain;-webkit-user-drag:none;pointer-events:none}
.fcard .noimg{font-size:80px;flex:1;display:grid;place-items:center}
.fword{font-size:44px;font-weight:800;margin-top:10px;text-align:center;line-height:1.1}
.fsent{font-size:20px;color:var(--muted);text-align:center;margin-top:4px}
.fcard.pop{animation:pop .28s ease}
@keyframes pop{from{transform:scale(.94);opacity:.4}to{transform:none;opacity:1}}
.nav{height:76px;border:none;border-radius:24px;background:var(--card);box-shadow:0 5px 0 #cfe3d7;font-size:32px;color:var(--brand-d)}
.nav.prev{grid-area:prev} .nav.next{grid-area:next;box-shadow:0 5px 0 var(--brand-d)}
.nav:active{transform:translateY(3px)}
@media (orientation:landscape){
  .vmain{grid-template-columns:84px minmax(0,1fr) 84px;grid-template-rows:minmax(0,1fr);grid-template-areas:"prev card next";align-items:center}
  .nav{height:150px}
  .fcard{max-width:900px;justify-self:center;width:100%}
}
.nav.next{background:var(--brand);color:#fff}
.burst{font-size:110px;animation:spin 1s ease}
@keyframes spin{from{transform:scale(.2) rotate(-90deg)}to{transform:none}}
.bigicon{width:96px;height:96px;border-radius:28px;border:none;background:var(--card);box-shadow:var(--shadow);font-size:46px}
@media (orientation:landscape) and (max-height:560px){ .fword{font-size:32px;margin-top:4px} .fcard{padding:10px} }