:root{--bg:#0a0f1e;--card:#131c3a;--card2:#18234a;--line:#25315f;--text:#eaf0ff;--mut:#9aa8d6;--cyan:#22d3ee;--amber:#fbbf24;--green:#34d399;--red:#fb7185;--violet:#a78bfa;--code:#070b17;color-scheme:dark}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;background:var(--bg);color:var(--text);font:17px/1.75 'Cairo',system-ui,sans-serif}
body{min-height:100vh;background:radial-gradient(900px 480px at 85% -8%,#1b3b8044,transparent),radial-gradient(700px 480px at 0% 12%,#4a1f8044,transparent),var(--bg)}
button{font:inherit;color:inherit;cursor:pointer}
h1,h2,h3{line-height:1.4;margin:0}
code,.mono{font-family:'JetBrains Mono','Cairo',monospace}
code{direction:ltr;unicode-bidi:isolate;display:inline-block;background:#1b2750;color:#bfe9ff;padding:0 7px;border-radius:7px;font-size:.86em;line-height:1.6}
.muted{color:var(--mut);font-size:.92rem}
.top{position:sticky;top:0;z-index:5;display:flex;justify-content:space-between;align-items:center;padding:10px 16px;background:#0a0f1ecc;backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.logo{font-weight:800;font-size:1.3rem;color:var(--cyan)}
.stats{display:flex;gap:8px}
.chip{background:var(--card);border:1px solid var(--line);border-radius:99px;padding:2px 12px;font-weight:700;font-size:.95rem}
#view{max-width:720px;margin:0 auto;padding:16px 16px 110px}
#tabs{position:fixed;bottom:0;inset-inline:0;z-index:6;display:flex;justify-content:center;gap:4px;padding:6px 8px calc(6px + env(safe-area-inset-bottom));background:#0a0f1ef2;border-top:1px solid var(--line)}
#tabs button{flex:1;max-width:170px;background:none;border:0;border-radius:12px;padding:4px 2px;font-size:.78rem;font-weight:700;color:var(--mut);position:relative}
#tabs button i{display:block;font-style:normal;font-size:1.35rem;line-height:1.3}
#tabs button.on{color:var(--cyan);background:#12204a}
#tabs b{position:absolute;top:0;inset-inline-end:14%;background:var(--red);color:#fff;border-radius:99px;padding:0 6px;font-size:.7rem}
.card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:16px 18px;margin:14px 0}
.hero{display:flex;gap:14px;align-items:center;background:linear-gradient(135deg,#11306b,#2a1a63);border-color:#3b4fa0}
.hero .bot{font-family:'JetBrains Mono',monospace;font-size:2.6rem;font-weight:600;color:var(--cyan);direction:ltr;animation:float 3s ease-in-out infinite}
.hero h2{font-size:1.2rem}
.hero p{margin:2px 0 10px;color:#c9d4ff}
.btn{border:0;border-radius:14px;padding:10px 20px;font-weight:800;background:var(--card2);border:2px solid var(--line);transition:transform .1s,filter .15s}
.btn:hover{filter:brightness(1.15)}.btn:active{transform:translateY(2px)}
.btn:disabled{opacity:.45;cursor:not-allowed}
.btn.primary{background:var(--cyan);border-color:#0e9db5;color:#04222b;box-shadow:0 4px 0 #0e9db5}
.btn.green{background:var(--green);border-color:#10a97c;color:#042a1e;box-shadow:0 4px 0 #10a97c}
.btn.red{background:var(--red);border-color:#d63e5a;color:#2b0710;box-shadow:0 4px 0 #d63e5a}
.btn.big{width:100%;font-size:1.1rem;padding:12px}
.btn.run{margin-top:8px;padding:6px 16px;font-size:.92rem;background:#14305c;border-color:#2a5aa8}
.btn.ghost{padding:4px 14px;font-size:.88rem;background:transparent}
.world{margin:26px 0 0}
.wh{display:flex;gap:12px;align-items:center;padding:12px 16px;border-radius:16px;background:var(--card);border:1px solid var(--line);border-inline-start:6px solid var(--wc)}
.wh .we{font-size:2rem}.wh h3{font-size:1.1rem}.wh small{color:var(--mut);display:block;line-height:1.4}
.wh .wp{margin-inline-start:auto;font-weight:800;color:var(--wc)}
.path{display:flex;flex-direction:column;align-items:center;padding:14px 0 4px}
.node{width:100%;max-width:280px;display:flex;flex-direction:column;align-items:center;background:none;border:0;padding:8px 0;position:relative}
.node:nth-child(4n+2){transform:translateX(44px)}.node:nth-child(4n){transform:translateX(-44px)}
.node .ci{width:78px;height:78px;border-radius:50%;display:grid;place-items:center;font-size:2rem;background:var(--wc);color:#04101f;box-shadow:0 6px 0 #0006,inset 0 -5px 0 #0003;transition:transform .15s}
.node:hover .ci{transform:scale(1.07)}
.node .nt{font-weight:700;font-size:.95rem;margin-top:8px;line-height:1.3}
.node .st{letter-spacing:2px;color:var(--amber);font-size:.9rem;min-height:1.3em}
.node.locked .ci{background:#2a345c;color:#7080b4;filter:grayscale(.6)}
.node.locked .nt{color:var(--mut)}
.node.cur .ci{animation:pulse 1.6s infinite}
.node.cur::after{content:'ابدأ ▸';position:absolute;top:-4px;background:var(--amber);color:#2a1d00;border-radius:99px;padding:0 12px;font-weight:800;font-size:.8rem}
.opts{margin:6px 0}
.opt{display:block;width:100%;text-align:start;padding:13px 16px;margin:10px 0;border-radius:14px;background:var(--card);border:2px solid var(--line);transition:.15s}
.opt:hover:not(:disabled){border-color:var(--cyan)}
.opt.sel{border-color:var(--cyan);background:#0e2a4a}
.opt.ok{border-color:var(--green)!important;background:#0a3326}
.opt.bad{border-color:var(--red)!important;background:#3a1220}
.opt:disabled{cursor:default;color:inherit}
#player{position:fixed;inset:0;z-index:20;background:var(--bg);display:flex;flex-direction:column}
#player[hidden]{display:none}
.ph{display:flex;align-items:center;gap:12px;padding:12px 16px;max-width:760px;width:100%;margin:0 auto}
.ph #pClose{background:none;border:0;font-size:1.4rem;color:var(--mut)}
.bar{flex:1;height:14px;background:#1b2750;border-radius:99px;overflow:hidden}
.bar i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--cyan),var(--green));border-radius:99px;transition:width .4s}
#pCnt{color:var(--mut);font-weight:700;font-size:.9rem;min-width:44px;text-align:end}
#stage{flex:1;overflow:auto;max-width:760px;width:100%;margin:0 auto;padding:6px 18px 24px}
#foot{max-width:760px;width:100%;margin:0 auto;padding:10px 16px calc(14px + env(safe-area-inset-bottom))}
.tag{display:inline-block;background:#1b2750;color:var(--cyan);border-radius:99px;padding:0 14px;font-size:.82rem;font-weight:800;margin-bottom:8px}
.tag.lab{background:#3a1c0a;color:var(--amber)}
.lt{font-size:1.45rem;margin:2px 0 10px}
.q{font-size:1.18rem;font-weight:700;margin:6px 0 10px}
.prose{font-size:1.06rem}
.note{border-radius:14px;padding:10px 14px;margin:12px 0;font-size:.98rem}
.note.tip{background:#0b2a3a;border:1px solid #1b6e8e}
.note.warn{background:#35210a;border:1px solid #9a6414}
.lab{background:#3a1c0a;border:1px dashed var(--amber);border-radius:12px;padding:8px 14px;margin-bottom:10px;font-weight:600}
.fb{border-radius:18px;padding:14px 16px;animation:rise .25s}
.fb.good{background:#06281f;border:2px solid var(--green)}
.fb.bad{background:#2a0e18;border:2px solid var(--red)}
.fbt{font-weight:800;font-size:1.2rem}
.fb.good .fbt{color:var(--green)}.fb.bad .fbt{color:var(--red)}
.fb{max-height:64vh;overflow:auto}
.fb>.btn{position:sticky;bottom:0}
.fbm{margin:4px 0 12px;font-size:1rem}
.fb .btn.run{margin:0 0 10px}
/* code */
.code,.ed pre,.ed textarea{font-family:'JetBrains Mono','Cairo',monospace;font-size:.92rem;line-height:1.75;direction:ltr;text-align:left;tab-size:2;white-space:pre;padding:12px 14px;margin:0;letter-spacing:0}
.code{background:var(--code);border:1px solid var(--line);border-radius:14px;overflow-x:auto;margin:10px 0}
.code code{all:unset;font:inherit}
.edbox{margin:10px 0}
.ed{position:relative;background:var(--code);border:1px solid #31407a;border-radius:14px;overflow:hidden}
.ed:focus-within{border-color:var(--cyan)}
.ed pre{position:absolute;inset:0;overflow:hidden;pointer-events:none;color:#e6ecff}
.ed textarea{position:relative;display:block;width:100%;background:transparent;color:transparent;caret-color:#fff;border:0;outline:0;resize:none;overflow-x:auto;overflow-y:hidden}
.ed textarea::selection{background:#2f58b8aa;color:transparent}
.tkey{color:#7dd3fc}.ts{color:#86efac}.tn{color:var(--amber)}.tl{color:#c4b5fd;font-weight:600}.terr{color:var(--red);text-decoration:underline wavy}.b0{color:#fbbf24}.b1{color:#f472b6}.b2{color:#22d3ee}.b3{color:#a3e635}.bx{color:#fff;background:var(--red);border-radius:3px}
.live{margin-top:8px}.lint{border-radius:10px;padding:6px 12px;font-size:.93rem;line-height:1.6}.lint.ok{background:#06281f;border:1px solid #1d7a5a;color:#a7f3d0}.lint.bad{background:#2a0e18;border:1px solid #6b2236;color:#fecdd3}
.pin{width:100%;font-family:'JetBrains Mono',monospace;font-size:1rem;background:var(--code);color:var(--text);border:2px solid var(--line);border-radius:12px;padding:10px 14px;margin:12px 0 4px}.pin:focus{outline:0;border-color:var(--cyan)}
.out{background:#0b1226;border:1px solid var(--line);border-radius:10px;padding:8px 12px;margin:8px 0 0;font-family:'JetBrains Mono','Cairo',monospace;font-size:.9rem;line-height:1.6;overflow-x:auto}
.out div{white-space:pre-wrap}
.errbox{border:1px solid #6b2236;background:#2a0e18;border-radius:12px;padding:8px 12px;margin-top:8px}
.errmsg{font-family:'JetBrains Mono',monospace;direction:ltr;text-align:left;color:#ffb4c2;font-size:.88rem;overflow-wrap:anywhere}
.errar{font-size:.95rem;margin-top:4px}
.result:empty{display:none}
.lines{display:flex;flex-direction:column;gap:8px;margin:8px 0;min-height:44px}
.lines.ans{padding:8px;border:2px dashed var(--line);border-radius:14px;min-height:60px}
.ln{display:flex;gap:10px;align-items:center;text-align:left;direction:ltr;background:var(--code);border:2px solid var(--line);border-radius:12px;padding:6px 12px;font-family:'JetBrains Mono','Cairo',monospace;font-size:.92rem;white-space:pre;overflow-x:auto}
.ln:hover{border-color:var(--cyan)}.ln .n{color:var(--mut);min-width:1.2em}
.fill .slot{display:inline-block;min-width:78px;min-height:1.8em;vertical-align:middle;margin:0 2px;padding:0 8px;border:2px dashed var(--amber);border-radius:8px;background:#2b2208;color:var(--amber);font-family:inherit;font-size:inherit;text-align:center}
.fill .slot.f{border-style:solid;background:#102a4a;color:#fff}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin:10px 0;direction:ltr}
.chipb{background:var(--card2);border:2px solid var(--line);border-radius:10px;padding:2px 14px;font-family:'JetBrains Mono','Cairo',monospace;font-size:.92rem}
.chipb:disabled{opacity:.25}
.bugl{background:var(--code);border:1px solid var(--line);border-radius:14px;padding:6px;margin:8px 0;direction:ltr}
.bl{display:flex;gap:12px;width:100%;text-align:left;background:none;border:2px solid transparent;border-radius:9px;padding:0 10px;font-family:'JetBrains Mono','Cairo',monospace;font-size:.92rem;white-space:pre;overflow-x:auto}
.bl:hover{background:#142048}.bl .n{color:var(--mut);min-width:1.4em;text-align:right}
.bl.sel{background:#3a2f0f;border-color:var(--amber)}
.bl.bad{background:#3a1220;border-color:var(--red)}.bl.ok{background:#0a3326;border-color:var(--green)}
.step2{margin-top:14px}
.mt{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:8px}
.mt .col{display:flex;flex-direction:column;gap:10px}
.mi{padding:10px 12px;border-radius:12px;background:var(--card);border:2px solid var(--line);text-align:start;font-size:.95rem;line-height:1.5}
.mi.sel{border-color:var(--cyan);background:#0e2a4a}.mi.ok{border-color:var(--green);background:#0a3326;opacity:.8}
.mi.shake{animation:shake .35s;border-color:var(--red)}
.hints .note{margin:8px 0}
.tryfail{border:1px solid #9a6414;background:#35210a;border-radius:12px;padding:10px 12px;margin:10px 0}
.cmp{display:grid;grid-template-columns:1fr 1fr;gap:8px}.cmp small{color:var(--mut)}
.row{display:flex;gap:8px;flex-wrap:wrap;margin:8px 0}
.finish{text-align:center;padding-top:20px}
.finish .big{font-size:4.5rem;animation:float 2.5s ease-in-out infinite}
.stars{font-size:2.6rem;letter-spacing:6px;color:var(--amber)}
.fin-stats{display:flex;justify-content:center;gap:12px;margin:14px 0;flex-wrap:wrap}
.fin-stats div{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:6px 18px}
.fin-stats b{display:block;font-size:1.5rem}
.mus{border-inline-start:5px solid var(--red)}
.mus h3{font-size:1.1rem}
.mus .lbl{font-weight:800;font-size:.88rem;color:var(--mut);margin-top:10px}
.badges{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px}
.bd{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:12px 8px;text-align:center;line-height:1.35}
.bd i{font-style:normal;display:block;font-size:2.2rem}
.bd.off{opacity:.35;filter:grayscale(1)}.bd small{color:var(--mut)}
.kv{display:flex;gap:10px;flex-wrap:wrap}.kv .card{flex:1;min-width:120px;text-align:center;margin:6px 0}.kv b{display:block;font-size:1.6rem;color:var(--cyan)}
.set{display:flex;gap:10px;flex-wrap:wrap;margin-top:10px}
.modal{position:fixed;inset:0;z-index:40;background:#050810e6;display:grid;place-items:center;padding:16px}
.modal .card{max-width:420px;width:100%;text-align:center}
.modal input{width:100%;font:inherit;font-size:1.2rem;text-align:center;background:var(--code);color:var(--text);border:2px solid var(--line);border-radius:14px;padding:10px;margin:8px 0 14px}
.modal input:focus{outline:0;border-color:var(--cyan)}
.avs{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin:10px 0}
.avb{font-size:1.7rem;background:var(--card2);border:2px solid var(--line);border-radius:14px;width:52px;height:52px}
.avb.on{border-color:var(--amber);background:#35290a;transform:scale(1.1)}
.lb{display:flex;align-items:center;gap:12px;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:8px 14px;margin:8px 0}
.lb.me{border-color:var(--cyan);background:#0e2a4a}
.lb .rk{min-width:2.2em;font-size:1.3rem;font-weight:800;text-align:center}
.lb .av{font-size:1.8rem}.lb .nm{flex:1;font-weight:700;line-height:1.3}.lb small{display:block;color:var(--mut);font-weight:400}
.lb b{color:var(--amber)}
#toast{position:fixed;top:70px;inset-inline:0;margin:auto;width:max-content;max-width:90vw;z-index:50;pointer-events:none}
#toast div{background:var(--amber);color:#2a1d00;font-weight:800;border-radius:14px;padding:8px 18px;margin-top:8px;animation:rise .3s;box-shadow:0 8px 24px #0008}
.fx{position:fixed;z-index:60;pointer-events:none;font-size:1.4rem;animation:fly 1s ease-out forwards}
@keyframes fly{to{transform:translate(var(--x),var(--y)) rotate(var(--r));opacity:0}}
@keyframes float{50%{transform:translateY(-8px)}}
@keyframes pulse{0%{box-shadow:0 6px 0 #0006,0 0 0 0 var(--wc)}70%{box-shadow:0 6px 0 #0006,0 0 0 18px #0000}100%{box-shadow:0 6px 0 #0006,0 0 0 0 #0000}}
@keyframes rise{from{transform:translateY(16px);opacity:0}}
@keyframes shake{25%{transform:translateX(-6px)}75%{transform:translateX(6px)}}
@media(max-width:480px){html,body{font-size:16px}.cmp,.mt{grid-template-columns:1fr}.mt{grid-template-columns:1fr 1fr}.node:nth-child(4n+2){transform:translateX(30px)}.node:nth-child(4n){transform:translateX(-30px)}}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}

.ts,.tkey{unicode-bidi:isolate;direction:ltr}