:root{
  --bg:#EAF4FF;
  --ink:#2A2540;
  --muted:#5E6A88;
  --grass:#BDE7A6;
  --grass-2:#AEDD95;
  --sun:#FFC529;
  --sun-dark:#D99A00;
  --go:#2DB75A;
  --go-dark:#1E8A41;
  --font:"Baloo 2", "Comic Sans MS", "Segoe UI", system-ui, sans-serif;
  color-scheme:light;
}
*{box-sizing:border-box}
html,body{background:var(--bg)}
body{margin:0;font-family:var(--font);color:var(--ink);padding-inline:12px;padding-block:8px 12px;touch-action:manipulation;-webkit-tap-highlight-color:transparent}
.app{max-width:1100px;margin-inline:auto;min-height:calc(100dvh - 20px);display:grid;grid-template-rows:auto 1fr;gap:8px}
.bar{display:flex;align-items:center;justify-content:space-between;gap:12px}
.back{color:var(--ink);text-decoration:none;font-weight:700;font-size:15px;padding:6px 14px;border-radius:999px;background:rgba(255,255,255,.75)}
.bar-title{font-weight:800;font-size:19px}
.bar-actions{display:flex;gap:8px}
.icon-btn{width:44px;height:44px;border-radius:50%;border:0;background:rgba(255,255,255,.75);display:grid;place-items:center;cursor:pointer;color:var(--ink);padding:0}
.icon-btn span{display:grid;place-items:center}
.icon-btn span[hidden]{display:none}
.icon-btn svg{width:24px;height:24px}
button{font:inherit;cursor:pointer}
:focus-visible{outline:4px solid var(--ink);outline-offset:3px}

.stage{position:relative;display:grid;grid-template-columns:minmax(0,1fr) minmax(260px,.85fr);gap:14px;align-items:center;min-height:0}
.board-wrap{display:grid;place-items:center;min-height:0}
.board{--n:4;--cs:min(calc((52vw - 60px) / var(--n)),calc((100dvh - 140px) / var(--n)),110px);display:grid;grid-template-columns:repeat(var(--n),var(--cs));grid-template-rows:repeat(var(--n),var(--cs));gap:4px;padding:8px;background:#8CC874;border-radius:22px;position:relative;box-shadow:0 10px 26px rgba(42,37,64,.15)}
.cell{border-radius:12px;background:var(--grass);display:grid;place-items:center;font-size:calc(var(--cs) * .62);line-height:1;font-family:"Segoe UI Emoji","Apple Color Emoji","Noto Color Emoji",sans-serif}
.cell.alt{background:var(--grass-2)}
.cell.path{box-shadow:inset 0 0 0 4px rgba(255,197,41,.6)}
.robot{position:absolute;width:var(--cs);height:var(--cs);display:grid;place-items:center;font-size:calc(var(--cs) * .72);line-height:1;transition:left .35s ease-in-out,top .35s ease-in-out;pointer-events:none;font-family:"Segoe UI Emoji","Apple Color Emoji","Noto Color Emoji",sans-serif;z-index:2}
.robot.bump{animation:bump .4s}
.robot.happy{animation:hop .5s 2}
@keyframes bump{30%{transform:translate(var(--bx),var(--by)) rotate(8deg)}60%{transform:rotate(-8deg)}}
@keyframes hop{50%{transform:translateY(-30%) scale(1.15)}}
.star-get{animation:spin 1s}
@keyframes spin{to{transform:rotate(360deg) scale(1.4)}}

.panel{display:grid;gap:12px;align-content:center}
.prog{display:flex;flex-wrap:wrap;gap:6px;min-height:76px;background:rgba(255,255,255,.8);border-radius:20px;padding:10px;align-content:flex-start}
.slot{width:54px;height:54px;border-radius:14px;border:3px dashed #C9C3D8;display:grid;place-items:center;font-size:28px;font-weight:800;color:#fff}
.slot.full{border:0;box-shadow:0 3px 0 rgba(0,0,0,.18)}
.slot.cur{outline:4px solid var(--sun);outline-offset:2px;transform:scale(1.1)}
.slot.bad{outline:4px solid #E5484D;outline-offset:2px}
.d-u{background:#3D8BFD} .d-d{background:#9B5DE5} .d-l{background:#FF8C42} .d-r{background:#2DB75A}
.arrows{display:grid;grid-template-columns:repeat(3,76px);grid-template-rows:repeat(2,76px);gap:8px;justify-content:center;grid-template-areas:". u ." "l d r"}
.arrows button{border:0;border-radius:20px;color:#fff;font-size:34px;font-weight:800;box-shadow:0 5px 0 rgba(0,0,0,.2)}
.arrows button:active{transform:translateY(4px);box-shadow:0 1px 0 rgba(0,0,0,.2)}
.arrows .a-u{grid-area:u} .arrows .a-l{grid-area:l} .arrows .a-d{grid-area:d} .arrows .a-r{grid-area:r}
.arrows button.glow{animation:glow 1s ease-in-out infinite}
@keyframes glow{50%{box-shadow:0 5px 0 rgba(0,0,0,.2),0 0 0 6px var(--sun)}}
.ctrl{display:flex;gap:10px;justify-content:center}
.ctrl button{border:0;border-radius:18px;height:64px;padding:0 18px;font-size:22px;font-weight:800;box-shadow:0 5px 0 rgba(0,0,0,.18);background:#fff;color:var(--ink)}
.ctrl .play{background:var(--go);color:#fff;box-shadow:0 5px 0 var(--go-dark);min-width:110px;font-size:30px}
.ctrl .play.glow{animation:glow 1s ease-in-out infinite}
.ctrl button:active{transform:translateY(4px)}
.ctrl button:disabled{opacity:.45}
.dots{display:flex;gap:6px;justify-content:center}
.dots i{width:14px;height:14px;border-radius:50%;background:rgba(42,37,64,.15)}
.dots i.on{background:var(--sun)}

.overlay{position:fixed;inset:0;z-index:20;display:grid;place-content:center;justify-items:center;gap:20px;text-align:center;padding:24px;background:rgba(234,244,255,.92)}
.overlay[hidden]{display:none}
.rainbow{margin:0;font-weight:800;font-size:clamp(2.6rem,9vw,5rem);line-height:1;text-wrap:balance;text-shadow:0 3px 0 #fff, 0 -2px 0 #fff, 2px 0 0 #fff, -2px 0 0 #fff, 0 10px 20px rgba(42,37,64,.2)}
.rainbow.big{font-size:clamp(2.8rem,10vw,5.5rem)}
.big-btn{width:150px;height:150px;border-radius:50%;border:8px solid #fff;background:var(--sun);padding:0;box-shadow:0 10px 0 var(--sun-dark),0 22px 34px rgba(42,37,64,.25);cursor:pointer;display:grid;place-items:center;animation:breathe 1.6s ease-in-out infinite}
.big-btn svg{width:62%;height:62%}
.big-btn:active{transform:translateY(8px);box-shadow:0 2px 0 var(--sun-dark)}
@keyframes breathe{50%{scale:1.06}}
.parent{max-width:52ch;margin:0;font-size:14px;line-height:1.45;background:rgba(255,255,255,.9);padding:10px 14px;border-radius:14px}
.levels{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;max-width:520px}
.lvl{width:72px;height:80px;border-radius:20px;border:4px solid #fff;background:rgba(255,255,255,.9);display:grid;place-items:center;padding:4px 0;cursor:pointer;font:800 24px/1 var(--font);color:var(--ink);box-shadow:0 5px 0 rgba(42,37,64,.18)}
.lvl small{font-size:13px;letter-spacing:1px;color:#C98F00;min-height:14px}
.lvl .ic{font-size:20px;line-height:1}
.stars{display:flex;gap:10px;font-size:clamp(2.6rem,9vw,4rem);line-height:1}
.stars span{filter:grayscale(1) opacity(.35)}
.stars span.on{filter:none;animation:pop .5s backwards}
.stars span.on:nth-child(2){animation-delay:.25s}
.stars span.on:nth-child(3){animation-delay:.5s}
@keyframes pop{from{scale:0}70%{scale:1.3}}
.row-btns{display:flex;gap:18px;align-items:center}
.small-btn{width:84px;height:84px;border-radius:50%;border:6px solid #fff;background:#8ECDF0;padding:0;cursor:pointer;display:grid;place-items:center;box-shadow:0 6px 0 #4F98C2}
.small-btn svg{width:58%;height:58%}

@media (orientation:portrait),(max-width:760px){
  .stage{grid-template-columns:1fr;align-content:start}
  .board{--cs:min(calc((100vw - 50px) / var(--n)),calc((100dvh - 470px) / var(--n)),100px)}
  .arrows{grid-template-columns:repeat(3,66px);grid-template-rows:repeat(2,62px)}
  .slot{width:44px;height:44px;font-size:22px}
  .prog{min-height:64px}
  .ctrl button{height:56px}
  .bar-title{display:none}
}
@media (prefers-reduced-motion:reduce){ .big-btn{animation:none} .robot{transition:none} }