:root{--green:#08743f;--green2:#0aa75a;--lime:#78df7e;--ink:#10233f;--navy:#0c2448;--red:#e32731;--blue:#1877e8;--gold:#ffd543;--cream:#fffdf3;--panel:rgba(255,255,255,.94);--shadow:0 20px 55px rgba(8,35,67,.16)}
*{box-sizing:border-box}html,body{margin:0;min-height:100%;font-family:Inter,ui-rounded,"Trebuchet MS",system-ui,-apple-system,Segoe UI,sans-serif;color:var(--ink);background:#e9fbf3}button,input{font:inherit}button{cursor:pointer}button:focus-visible,input:focus-visible{outline:4px solid var(--gold);outline-offset:2px}body{overflow-x:hidden}#app{min-height:100vh;background:radial-gradient(circle at 15% 5%,#c9f8da 0,transparent 28%),linear-gradient(145deg,#eafff1,#e8f3ff 54%,#fff5d9)}
.topbar{position:fixed;z-index:100;top:0;left:0;right:0;height:72px;padding:8px clamp(12px,3vw,34px);display:flex;align-items:center;justify-content:space-between;background:rgba(255,255,255,.91);backdrop-filter:blur(16px);border-bottom:3px solid var(--green);box-shadow:0 7px 22px rgba(6,71,38,.09)}.brand{display:flex;align-items:center;gap:11px}.logo{width:53px;height:53px;object-fit:contain}.brand-copy{display:flex;flex-direction:column}.brand-copy strong{font-size:16px;letter-spacing:.08em}.brand-copy span{font-size:10px;font-weight:900;color:#658078;letter-spacing:.09em}.top-actions{display:flex;align-items:center;gap:8px}.round-btn{width:44px;height:44px;border:none;border-radius:14px;background:#eef3f5;color:#34465c;font-size:21px;font-weight:1000;box-shadow:inset 0 -2px rgba(0,0,0,.06)}.round-btn.on{background:#d9f7e4;color:var(--green)}.star-bank{height:44px;display:flex;align-items:center;gap:6px;background:#fff4bf;border:2px solid #ffdf66;border-radius:14px;padding:0 13px;font-size:16px}.star-bank span{font-size:20px}
.screen{display:none;min-height:100vh;padding-top:72px}.screen.active{display:block}.start-screen{position:relative;overflow:hidden;background:linear-gradient(160deg,#083b37 0%,#075440 43%,#0b2850 100%);color:#fff}.start-screen:before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.028) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.028) 1px,transparent 1px);background-size:34px 34px;mask-image:linear-gradient(#000,transparent 88%)}.sky-glow{position:absolute;width:650px;height:650px;border-radius:50%;background:radial-gradient(circle,rgba(107,255,178,.27),transparent 65%);right:-180px;top:-160px;filter:blur(5px)}.floating-code{position:absolute;font-weight:1000;color:rgba(255,255,255,.08);font-size:clamp(55px,9vw,130px);animation:floatCode 5s ease-in-out infinite}.code-1{left:2%;top:18%}.code-2{right:5%;top:12%;animation-delay:-1.2s}.code-3{right:30%;bottom:11%;animation-delay:-2.2s}@keyframes floatCode{50%{transform:translateY(-18px) rotate(3deg)}}
.start-shell{position:relative;z-index:3;width:min(1180px,calc(100% - 34px));min-height:calc(100vh - 120px);margin:0 auto;display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center;padding:45px 0 70px}.school-chip{display:inline-flex;align-items:center;gap:8px;padding:5px 12px 5px 6px;border-radius:999px;background:rgba(255,255,255,.13);border:1px solid rgba(255,255,255,.18);font-weight:1000;letter-spacing:.06em;font-size:12px}.school-chip img{width:34px;height:34px;object-fit:contain;background:#fff;border-radius:50%}.kicker{margin-top:18px;font-size:12px;font-weight:1000;color:#9ef9bd;letter-spacing:.11em}.start-left h1{font-size:clamp(58px,8vw,104px);line-height:.82;margin:15px 0 8px;letter-spacing:-.065em;text-shadow:0 7px 0 rgba(0,0,0,.14)}.start-left h1 span{color:var(--gold)}.start-left h2{font-size:clamp(28px,4vw,47px);margin:0 0 13px;color:#b8f8d2}.start-left>p{max-width:650px;color:#d5f1e2;font-size:17px;line-height:1.65}.feature-pills{display:flex;gap:7px;flex-wrap:wrap;margin:18px 0}.feature-pills span{padding:8px 12px;border-radius:999px;background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.14);font-size:12px;font-weight:900}.name-entry{width:min(480px,100%);margin:20px 0 13px}.name-entry label{display:block;font-size:11px;font-weight:1000;letter-spacing:.1em;margin:0 0 6px;color:#a9dcbc}.name-entry input{width:100%;border:2px solid rgba(255,255,255,.18);background:rgba(0,0,0,.18);color:#fff;border-radius:16px;padding:14px 17px;font-size:20px;font-weight:1000}.mega-btn{border:none;border-radius:17px;background:linear-gradient(180deg,#ffea69,#ffc62e);color:#352900;font-weight:1000;padding:16px 24px;box-shadow:0 7px 0 #d89c00,0 17px 32px rgba(255,193,37,.22);letter-spacing:.02em}.mega-btn:hover{transform:translateY(-2px)}.mega-btn:active{transform:translateY(5px);box-shadow:0 2px 0 #d89c00}.mega-btn span{margin-right:7px}.audio-note{font-size:11px!important;color:#9dc7b1!important;margin-top:12px!important}.start-right{display:grid;place-items:center}.game-poster{position:relative;width:min(440px,90vw);aspect-ratio:1/.92;background:linear-gradient(150deg,#eafff1,#dff7ff);border:9px solid rgba(255,255,255,.16);outline:2px solid rgba(255,255,255,.2);border-radius:40px;padding:25px;transform:rotate(2deg);box-shadow:0 45px 80px rgba(0,0,0,.28);overflow:hidden}.poster-title{font-weight:1000;color:var(--green);letter-spacing:.22em;margin-bottom:15px}.mini-grid{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:6px;padding:9px;border-radius:19px;background:#80ca75;box-shadow:inset 0 0 0 5px #5aa455}.mini-grid i{aspect-ratio:1;border-radius:10px;display:grid;place-items:center;font-style:normal;font-size:32px;background:#6fbc65}.mini-grid i.road{background:#d6c29d}.mini-grid i.wall{background:#986746;box-shadow:inset 0 -7px rgba(0,0,0,.12)}.mini-grid i.car,.mini-grid i.finish{background:#d6c29d}.poster-blocks{display:flex;flex-wrap:wrap;gap:7px;margin-top:18px}.poster-blocks b{font-size:11px;color:#fff;padding:9px 11px;border-radius:9px;background:#2f86e9;box-shadow:0 4px 0 #15529b}.poster-blocks b:nth-child(2){background:#ee8d25;box-shadow-color:#a75606}.poster-blocks b:nth-child(3){background:#8f55d4;box-shadow-color:#592899}.poster-glow{position:absolute;width:210px;height:210px;border-radius:50%;right:-70px;bottom:-75px;background:radial-gradient(circle,rgba(255,214,67,.7),transparent 68%)}.marquee{position:absolute;z-index:3;left:0;right:0;bottom:0;background:#ffdc44;color:#263728;border-top:4px solid #fff;padding:9px 0;font-size:12px;font-weight:1000;letter-spacing:.08em;overflow:hidden;white-space:nowrap}.marquee div{display:inline-block;min-width:max-content;animation:marquee 24s linear infinite}@keyframes marquee{to{transform:translateX(-50%)}}
.game-screen{background:linear-gradient(#dff7ec,#edf6ff 62%,#fff5dc);padding-bottom:15px}.game-heading{width:min(1260px,calc(100% - 24px));margin:14px auto 10px;display:flex;justify-content:space-between;align-items:flex-end;gap:15px}.level-label{display:inline-flex;padding:4px 10px;border-radius:8px;background:var(--green);color:#fff;font-size:11px;font-weight:1000;letter-spacing:.08em}.game-heading h2{margin:5px 0 2px;font-size:clamp(24px,3vw,35px);line-height:1}.game-heading p{margin:0;color:#607281;font-weight:700;font-size:13px}.level-meta{display:flex;gap:7px;align-items:center}.meta-box{background:#fff;border:2px solid #d7e7df;border-radius:13px;padding:7px 12px;min-width:90px}.meta-box small{display:block;font-size:9px;font-weight:1000;color:#8a9a9a;letter-spacing:.1em}.meta-box strong{font-size:13px}.small-action{height:48px;border:none;border-radius:13px;background:var(--navy);color:#fff;font-weight:1000;padding:0 14px}
.workspace{width:min(1260px,calc(100% - 24px));margin:0 auto;display:grid;grid-template-columns:225px minmax(460px,1fr) 275px;gap:10px;align-items:stretch}.panel{background:var(--panel);border:2px solid rgba(255,255,255,.85);border-radius:22px;box-shadow:var(--shadow)}.toolbox,.program-panel{padding:13px}.panel-title{display:flex;align-items:center;gap:8px;padding-bottom:10px;border-bottom:1px solid #e4ece8}.panel-title>span{font-size:25px}.panel-title b{font-size:12px;display:block}.panel-title small{font-size:9px;color:#7d8b8c;font-weight:800}.toolbox-list{display:grid;gap:8px;margin-top:11px}.code-block{width:100%;border:none;border-radius:12px;padding:10px 11px;color:#fff;display:grid;grid-template-columns:30px 1fr;grid-template-rows:auto auto;text-align:left;align-items:center;box-shadow:0 5px 0 rgba(0,0,0,.22);transition:.16s}.code-block:hover{transform:translateY(-2px)}.code-block span{grid-row:1/3;font-size:24px}.code-block b{font-size:12px}.code-block small{font-size:9px;opacity:.85}.code-block.move{background:linear-gradient(135deg,#2d8cff,#1468cf)}.code-block.left{background:linear-gradient(135deg,#f19a32,#d46808)}.code-block.right{background:linear-gradient(135deg,#f05c72,#c92c47)}.code-block.repeat2,.code-block.repeat3{background:linear-gradient(135deg,#9b61e8,#6837b0)}.locked-tool{filter:grayscale(.8);opacity:.43;position:relative}.locked-tool:after{content:"🔒 LEVEL " attr(data-unlock);position:absolute;right:8px;top:7px;font-size:8px;background:rgba(0,0,0,.33);padding:3px 5px;border-radius:5px}.tool-tip{margin-top:13px;border-radius:12px;background:#fff6ca;padding:10px;font-size:10px;line-height:1.45;color:#67520a}
.arena-panel{padding:10px;min-width:0}.arena-toolbar{min-height:38px;display:flex;justify-content:space-between;align-items:center;gap:8px;padding:0 4px 8px}.status-chip{font-size:10px;font-weight:1000;color:var(--green);letter-spacing:.04em}.pulse-dot{display:inline-block;width:8px;height:8px;background:#39cf74;border-radius:50%;margin-right:6px;box-shadow:0 0 0 0 rgba(57,207,116,.5);animation:pulse 1.4s infinite}@keyframes pulse{70%{box-shadow:0 0 0 8px transparent}}.speed-control{display:flex;align-items:center;gap:4px;font-size:9px;font-weight:900;color:#71817c}.speed-control button{width:28px;height:28px;border:none;border-radius:8px;background:#edf2f1;filter:grayscale(1)}.speed-control button.active{background:#d9f7e4;filter:none;box-shadow:inset 0 0 0 2px var(--green)}.arena-frame{position:relative;overflow:hidden;border-radius:17px;background:linear-gradient(#87d4f2 0 27%,#69bd61 27%);padding:14px 14px 9px;min-height:497px}.city-silhouette{position:absolute;left:0;right:0;top:8%;height:21%;opacity:.14;background:linear-gradient(90deg,transparent 2%,#133 2% 8%,transparent 8% 10%,#133 10% 18%,transparent 18% 22%,#133 22% 26%,transparent 26% 29%,#133 29% 42%,transparent 42% 47%,#133 47% 54%,transparent 54% 58%,#133 58% 68%,transparent 68% 74%,#133 74% 88%,transparent 88%)}.grid{position:relative;z-index:2;width:min(100%,515px);aspect-ratio:1;margin:6px auto 0;display:grid;grid-template-columns:repeat(7,1fr);grid-template-rows:repeat(7,1fr);gap:3px;padding:7px;border-radius:17px;background:rgba(17,74,35,.3);box-shadow:0 17px 30px rgba(0,0,0,.18)}.cell{position:relative;border-radius:8px;background:#dfc69c;box-shadow:inset 0 -4px rgba(70,48,20,.09);display:grid;place-items:center;overflow:visible}.cell.grass{background:#76c76a;box-shadow:inset 0 -4px rgba(0,0,0,.06)}.cell.wall{background:linear-gradient(145deg,#ae714d,#7f482f);box-shadow:inset 0 -5px rgba(0,0,0,.16);border:2px solid #71402d}.cell.wall:before{content:"";position:absolute;inset:5px;border:2px dashed rgba(255,222,178,.28);border-radius:4px}.cell.finish{background:repeating-conic-gradient(#fff 0 25%,#172331 0 50%) 50%/20px 20px}.cell.bonus:after{content:"⭐";font-size:clamp(18px,3vw,31px);filter:drop-shadow(0 3px 2px rgba(0,0,0,.2));animation:starBob 1.2s ease-in-out infinite}@keyframes starBob{50%{transform:translateY(-4px) rotate(8deg)}}.cell.start-cell:before{content:"START";position:absolute;bottom:4px;font-size:7px;font-weight:1000;color:rgba(25,58,32,.55)}.car-token{position:absolute;z-index:20;width:70%;height:70%;display:grid;place-items:center;font-size:clamp(28px,5vw,48px);transition:transform .42s cubic-bezier(.2,.85,.3,1);filter:drop-shadow(0 6px 4px rgba(0,0,0,.22));pointer-events:none}.car-token:after{content:"";position:absolute;width:65%;height:15%;background:rgba(0,0,0,.22);border-radius:50%;bottom:-3px;filter:blur(3px);z-index:-1}.car-token.bump{animation:bump .45s}.car-token.success{animation:carWin .75s ease-in-out 2}@keyframes bump{25%{transform:translateX(-7px) rotate(-8deg)}50%{transform:translateX(7px) rotate(8deg)}75%{transform:translateX(-4px)}}@keyframes carWin{50%{transform:translateY(-12px) rotate(8deg) scale(1.1)}}.execution-marker{position:absolute;inset:2px;border:3px solid var(--gold);border-radius:8px;box-shadow:0 0 18px var(--gold);pointer-events:none}.arena-legend{display:flex;justify-content:center;gap:11px;flex-wrap:wrap;margin-top:8px;color:#fff;font-size:8px;font-weight:900;text-shadow:0 2px 2px rgba(0,0,0,.22)}
.program-panel{display:flex;flex-direction:column}.program-zone{position:relative;min-height:355px;max-height:390px;overflow:auto;margin-top:10px;border:2px dashed #cbd9d3;border-radius:14px;padding:7px;background:#f6faf8}.program-zone.drag-over{border-color:var(--green);background:#e8f9ef}.empty-program{min-height:315px;display:flex;flex-direction:column;align-items:center;justify-content:center;color:#9aa9a4;text-align:center}.empty-program span{width:45px;height:45px;display:grid;place-items:center;border-radius:13px;background:#e4efea;font-size:28px}.empty-program b{font-size:11px;margin-top:7px}.empty-program small{font-size:9px}.program-item{position:relative;border:none;width:100%;margin:0 0 7px;border-radius:10px;padding:10px 28px 10px 35px;color:#fff;text-align:left;font-size:11px;font-weight:1000;box-shadow:0 4px 0 rgba(0,0,0,.18);cursor:grab;transition:.16s}.program-item:before{position:absolute;left:9px;top:50%;transform:translateY(-50%);font-size:18px}.program-item:after{content:"×";position:absolute;right:8px;top:50%;transform:translateY(-50%);width:19px;height:19px;border-radius:50%;display:grid;place-items:center;background:rgba(0,0,0,.2)}.program-item[data-command=forward]{background:#237ce0}.program-item[data-command=forward]:before{content:"⬆"}.program-item[data-command=left]{background:#de7918}.program-item[data-command=left]:before{content:"↶"}.program-item[data-command=right]{background:#d83e57}.program-item[data-command=right]:before{content:"↷"}.program-item[data-command^=repeat]{background:#7547bf}.program-item[data-command^=repeat]:before{content:"🔁"}.program-item.executing{outline:4px solid var(--gold);transform:scale(1.02);box-shadow:0 0 22px rgba(255,211,67,.7)}.program-item.dragging{opacity:.35}.program-actions{display:grid;grid-template-columns:1fr 41px 41px;gap:6px;margin-top:auto;padding-top:10px}.run-btn{border:none;border-radius:12px;background:linear-gradient(#24c96a,#087b40);color:#fff;font-weight:1000;box-shadow:0 5px 0 #07502d}.run-btn:disabled{filter:grayscale(1);opacity:.55;cursor:not-allowed}.utility-btn{border:none;border-radius:11px;background:#edf1f2;font-size:18px}.utility-btn.danger{background:#ffe3e5}.keyboard-hint{font-size:8px;color:#8c9b96;text-align:center;margin-top:8px}.bottom-strip{width:min(1260px,calc(100% - 24px));margin:9px auto 0;background:#fff;border-radius:16px;padding:8px 11px;display:grid;grid-template-columns:210px 1fr 130px;align-items:center;gap:15px;box-shadow:0 10px 30px rgba(20,59,69,.1)}.student-card{display:flex;align-items:center;gap:7px}.student-card>span{font-size:27px}.student-card small,.progress-area>span{display:block;font-size:8px;font-weight:1000;color:#92a19d;letter-spacing:.08em}.student-card b{font-size:12px}.progress-area{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:8px}.progress-track{height:8px;border-radius:99px;background:#e7efec;overflow:hidden}.progress-bar{height:100%;width:10%;background:linear-gradient(90deg,var(--green),#44d77d);border-radius:99px;transition:.5s}.progress-area>b{font-size:10px}.hint-btn{border:none;border-radius:11px;background:#fff3b4;color:#6d5600;font-size:10px;font-weight:1000;height:36px}
.overlay{position:fixed;z-index:200;inset:0;background:rgba(7,25,39,.72);backdrop-filter:blur(8px);display:none;place-items:center;padding:18px}.overlay.show{display:grid}.modal{position:relative;z-index:2;width:min(650px,96vw);max-height:91vh;overflow:auto;background:#fff;border-radius:28px;padding:27px;box-shadow:0 35px 90px rgba(0,0,0,.35);text-align:center}.modal-close{position:absolute;right:15px;top:13px;border:none;width:38px;height:38px;border-radius:50%;font-size:25px;background:#edf2f1}.modal-kicker{font-size:10px;color:var(--green);font-weight:1000;letter-spacing:.15em}.modal-kicker.red{color:var(--red)}.modal h2{margin:5px 0 7px;font-size:31px}.modal>p{font-size:12px;color:#6d7c82}.level-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:8px;margin-top:18px}.level-card{position:relative;border:2px solid #dce8e3;border-radius:14px;background:#f8fcfa;padding:12px 5px;min-height:88px}.level-card b{display:block;font-size:21px}.level-card span{font-size:12px;letter-spacing:-2px}.level-card small{display:block;font-size:8px;color:#80918b;margin-top:3px}.level-card.locked{filter:grayscale(1);opacity:.42}.level-card.active{border-color:var(--green);box-shadow:0 0 0 3px #d7f4e2}.level-card.locked:after{content:"🔒";position:absolute;right:5px;top:5px}.result-modal{overflow:hidden}.result-emoji{font-size:66px;animation:resultBounce 1s ease-in-out infinite alternate}@keyframes resultBounce{to{transform:translateY(-8px) rotate(4deg)}}.result-stars{font-size:38px;letter-spacing:4px;margin:9px}.result-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:7px;margin:16px 0}.result-stats div{border-radius:13px;background:#f1f7f4;padding:10px}.result-stats small{display:block;font-size:8px;font-weight:1000;color:#899690}.result-stats b{font-size:18px}.result-actions{display:flex;justify-content:center;gap:8px;flex-wrap:wrap}.secondary-big{border:2px solid #d5dfdb;border-radius:15px;background:#fff;padding:14px 20px;font-weight:1000}.mega-btn.compact{padding:13px 18px}.fail-modal{width:min(470px,95vw)}.fail-actions{margin-top:16px}#confetti{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}.toast{position:fixed;z-index:300;left:50%;bottom:22px;transform:translate(-50%,20px);background:#102c3b;color:#fff;border-radius:12px;padding:10px 17px;font-size:11px;font-weight:900;opacity:0;pointer-events:none;transition:.25s}.toast.show{opacity:1;transform:translate(-50%,0)}
@media(max-width:1050px){.workspace{grid-template-columns:190px minmax(430px,1fr)}.program-panel{grid-column:1/-1;display:grid;grid-template-columns:1fr 220px;gap:10px}.program-panel>.panel-title{grid-column:1/-1}.program-zone{min-height:130px;max-height:180px}.empty-program{min-height:110px}.program-actions{align-self:end}.keyboard-hint{align-self:start}.toolbox-list{grid-template-columns:1fr}.arena-frame{min-height:455px}}
@media(max-width:760px){.topbar{height:64px}.screen{padding-top:64px}.brand-copy span{display:none}.logo{width:45px;height:45px}.star-bank{display:none}.round-btn{width:38px;height:38px}.start-shell{grid-template-columns:1fr;padding-top:35px}.start-right{display:none}.start-left h1{font-size:67px}.game-heading{align-items:flex-start;flex-direction:column}.level-meta{width:100%}.workspace{grid-template-columns:1fr}.toolbox{order:2}.arena-panel{order:1}.program-panel{order:3;grid-column:auto;display:flex}.toolbox-list{grid-template-columns:repeat(2,1fr)}.program-zone{min-height:150px;max-height:190px}.empty-program{min-height:125px}.arena-frame{min-height:auto}.bottom-strip{grid-template-columns:1fr auto}.student-card{display:none}.progress-area{grid-template-columns:auto 1fr auto}.level-grid{grid-template-columns:repeat(3,1fr)}.bottom-strip{position:relative}.game-screen{padding-bottom:12px}}
@media(max-width:480px){.brand-copy strong{font-size:12px}.top-actions{gap:4px}.round-btn{width:35px;height:35px}.start-shell{width:calc(100% - 24px)}.start-left h1{font-size:55px}.start-left h2{font-size:27px}.start-left>p{font-size:14px}.toolbox-list{grid-template-columns:1fr 1fr}.code-block{padding:8px}.grid{gap:2px;padding:5px}.cell{border-radius:5px}.workspace,.game-heading,.bottom-strip{width:calc(100% - 12px)}.level-meta{overflow-x:auto}.meta-box{min-width:82px}.program-actions{grid-template-columns:1fr 40px 40px}.level-grid{grid-template-columns:repeat(2,1fr)}}

/* Mobile/touch drag support */
.code-block,.program-item{-webkit-user-select:none;user-select:none;-webkit-touch-callout:none}
@media (pointer:coarse){
  .code-block,.program-item{touch-action:none}
  .program-zone.drag-over{border-color:#0aa75a;background:#dcf8e7;box-shadow:inset 0 0 0 3px rgba(10,167,90,.13)}
}
.touch-dragging{opacity:.38!important;transform:scale(.97)!important}
.touch-drag-ghost{position:fixed;z-index:1000;left:0;top:0;pointer-events:none;padding:12px 16px;border-radius:13px;background:linear-gradient(135deg,#123d70,#1769e0);color:#fff;font-size:12px;font-weight:1000;box-shadow:0 18px 38px rgba(6,25,47,.35),0 5px 0 rgba(0,0,0,.18);will-change:transform;white-space:nowrap}