/* مختبر سُهيل — الأنماط العامة
   التصميم: مختبر علمي مرح؛ أرضية زرقاء فاتحة، حبر كحلي، أزرار ممتلئة بظل سفلي كأزرار الألعاب. */
:root{
  --bg:#eef3ff; --bg-2:#ffffff; --card:#ffffff; --line:#d6def5;
  --ink:#1a2048; --muted:#5a6390; --sun:#ffb547; --sun-ink:#3a1a00; --sun-edge:#e8892a;
  --mint:#22b896; --mint-ink:#03362b; --rose:#e2507a; --navy:#0b1030;
  --shadow:0 10px 30px rgba(26,32,72,.10);
  --display:'Lalezar','Baloo Bhaijaan 2','Segoe UI',Tahoma,sans-serif;
  --body:'Baloo Bhaijaan 2','Segoe UI',Tahoma,'Noto Sans Arabic',sans-serif;
  --r:22px;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){--bg:#0b1030;--bg-2:#121a3f;--card:#16204a;--line:#26315f;--ink:#eef0ff;--muted:#a6afd8;--mint:#5fe3c6;--shadow:0 10px 30px rgba(0,0,0,.35);color-scheme:dark}}
:root[data-theme="dark"]{--bg:#0b1030;--bg-2:#121a3f;--card:#16204a;--line:#26315f;--ink:#eef0ff;--muted:#a6afd8;--mint:#5fe3c6;--shadow:0 10px 30px rgba(0,0,0,.35);color-scheme:dark}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--body);font-size:18px;line-height:1.7}
img,video{max-width:100%;display:block}
a{color:inherit}
:focus-visible{outline:3px solid var(--mint);outline-offset:3px;border-radius:8px}
.wrap{width:100%;max-width:1180px;margin-inline:auto;padding-inline:16px}
h1,h2,h3{font-family:var(--display);font-weight:400;line-height:1.2;margin:0;text-wrap:balance}

/* header */
.site-head{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.site-head .wrap{display:flex;align-items:center;gap:14px;padding-block:10px}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none}
.logo img{width:40px;height:44px}
.logo b{font-family:var(--display);font-weight:400;font-size:1.7rem;color:var(--ink)}
.nav{display:flex;gap:6px;margin-inline-start:auto;flex-wrap:wrap}
.nav a{text-decoration:none;padding:6px 14px;border-radius:12px;font-weight:600;color:var(--muted)}
.nav a:hover,.nav a[aria-current="page"]{background:var(--card);color:var(--ink)}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:8px;border:0;cursor:pointer;font:inherit;font-weight:800;text-decoration:none;padding:12px 22px;border-radius:16px;background:var(--sun);color:var(--sun-ink);box-shadow:0 5px 0 var(--sun-edge);transition:transform .08s}
.btn:active{transform:translateY(3px);box-shadow:0 2px 0 var(--sun-edge)}
.btn.mint{background:#5fe3c6;color:var(--mint-ink);box-shadow:0 5px 0 #2a9e86}
.btn.ghost{background:var(--card);color:var(--ink);box-shadow:0 5px 0 var(--line)}

/* hero */
.hero{padding-block:48px 28px}
.hero .wrap{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);gap:32px;align-items:center}
.hero h1{font-size:clamp(2.6rem,6vw,4.4rem);color:var(--ink)}
.hero h1 span{color:var(--sun-edge)}
.hero p{font-size:1.2rem;color:var(--muted);max-width:48ch;margin:12px 0 22px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px}
.hero-art{position:relative;aspect-ratio:1;max-width:440px;width:100%;justify-self:center}
.orbit{position:absolute;inset:0;border-radius:50%;border:2px dashed var(--line);animation:spin 40s linear infinite}
.orbit.o2{inset:16%;animation-duration:26s;animation-direction:reverse}
.orbit i{position:absolute;top:-14px;left:50%;width:28px;height:28px;border-radius:50%}
@keyframes spin{to{transform:rotate(360deg)}}
.hero-art .bot{position:absolute;inset:30%;animation:bob 3s ease-in-out infinite}
@keyframes bob{50%{transform:translateY(-10px)}}
.steps{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.step{display:flex;align-items:center;gap:8px;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:6px 14px;font-weight:700}
.step b{font-family:var(--display);font-weight:400;font-size:1.3rem}

/* section titles */
.sec{padding-block:28px}
.sec-head{display:flex;flex-wrap:wrap;align-items:end;justify-content:space-between;gap:12px;margin-bottom:18px}
.sec-head h2{font-size:2.2rem}
.sec-head p{margin:0;color:var(--muted)}

/* filters */
.filters{display:flex;flex-wrap:wrap;gap:8px}
.filters button{font:inherit;font-weight:700;border:1px solid var(--line);background:var(--card);color:var(--ink);border-radius:999px;padding:6px 16px;cursor:pointer}
.filters button[aria-pressed="true"]{background:var(--ink);color:var(--bg);border-color:var(--ink)}

/* topic cards */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(270px,1fr));gap:20px}
.card{position:relative;display:flex;flex-direction:column;background:var(--card);border-radius:var(--r);overflow:hidden;box-shadow:var(--shadow);text-decoration:none;color:inherit;transition:transform .2s}
.card:hover{transform:translateY(-4px)}
.thumb{position:relative;aspect-ratio:16/9;background:var(--navy)}
.thumb img{width:100%;height:100%;object-fit:cover}
.play{position:absolute;inset:auto auto 12px 12px;width:52px;height:52px;border-radius:50%;background:var(--sun);display:grid;place-items:center;box-shadow:0 4px 0 var(--sun-edge)}
.num{position:absolute;top:10px;right:12px;font-family:var(--display);font-size:1.4rem;color:#fff;text-shadow:0 2px 0 rgba(0,0,0,.4)}
.card .body{padding:14px 16px 18px;display:flex;flex-direction:column;gap:6px;flex:1}
.card h3{font-size:1.55rem}
.card p{margin:0;color:var(--muted);font-size:.98rem;line-height:1.6}
.meta{display:flex;flex-wrap:wrap;gap:6px;margin-top:auto;padding-top:6px}
.pill{font-size:.8rem;font-weight:800;border-radius:999px;padding:2px 10px;background:var(--bg);color:var(--muted)}
.pill.c{color:#1a1030}
.done{position:absolute;top:10px;left:12px;background:#5fe3c6;color:var(--mint-ink);font-weight:800;font-size:.8rem;border-radius:999px;padding:2px 10px}

/* feature */
.feature{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:24px;align-items:center;background:var(--navy);color:#eef0ff;border-radius:28px;padding:28px;overflow:hidden;position:relative}
.feature h2{font-size:2.3rem;color:var(--sun)}
.feature p{color:#b9c1ea}
.feature .stars{position:absolute;inset:0;background-image:radial-gradient(#fff 1px,transparent 1.5px);background-size:46px 46px;opacity:.18;pointer-events:none}
.feature img{border-radius:18px}

/* progress */
.progress{display:flex;align-items:center;gap:12px;background:var(--card);border:1px solid var(--line);border-radius:16px;padding:10px 16px}
.bar{flex:1;height:12px;background:var(--bg);border-radius:6px;overflow:hidden}
.bar i{display:block;height:100%;background:linear-gradient(90deg,var(--sun),#5fe3c6)}

/* topic page */
.topic-hero{padding-block:22px 8px}
.crumbs{font-size:.9rem;color:var(--muted)}
.crumbs a{text-decoration:none}
.topic-hero h1{font-size:clamp(2.2rem,5vw,3.4rem);margin-top:4px}
.player{border-radius:24px;overflow:hidden;background:#000;box-shadow:var(--shadow)}
.player video{width:100%;aspect-ratio:16/9;background:#000}
.layout{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(0,1fr);gap:24px;align-items:start;padding-block:20px 40px}
.panel{background:var(--card);border-radius:var(--r);padding:18px 20px;box-shadow:var(--shadow)}
.panel h2{font-size:1.7rem;margin-bottom:8px}
.facts{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.facts li{display:flex;gap:10px;background:var(--bg);border-radius:14px;padding:10px 12px;line-height:1.6}
.facts li::before{content:"★";color:var(--sun-edge)}
details.transcript{margin-top:16px}
details.transcript summary{cursor:pointer;font-weight:800}
.transcript ol{margin:10px 0 0;padding-inline-start:22px;display:grid;gap:8px;font-size:1.05rem;line-height:2}
.transcript ol li::marker{color:var(--muted);font-weight:800}
.transcript b{display:block;font-size:.85rem;color:var(--muted)}
.q{margin-bottom:16px}
.q p{font-weight:800;margin:0 0 8px}
.opts{display:grid;gap:8px}
.opt{font:inherit;text-align:start;border:2px solid var(--line);background:var(--bg-2);color:var(--ink);border-radius:14px;padding:8px 14px;cursor:pointer;font-weight:600}
.opt:hover{border-color:var(--muted)}
.opt.right{background:#5fe3c6;border-color:transparent;color:var(--mint-ink)}
.opt.wrong{border-color:var(--rose);animation:shake .35s}
@keyframes shake{25%{transform:translateX(-5px)}75%{transform:translateX(5px)}}
.score{font-family:var(--display);font-size:1.5rem;color:var(--sun-edge);min-height:1.4em}
.next{display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;margin-top:6px}

/* parents */
.prose{max-width:72ch}
.prose h2{font-size:2rem;margin:28px 0 8px}
.prose p,.prose li{color:var(--ink)}
.table-wrap{overflow-x:auto;background:var(--card);border-radius:var(--r);box-shadow:var(--shadow)}
table{border-collapse:collapse;width:100%;min-width:640px}
th,td{padding:10px 14px;text-align:start;border-bottom:1px solid var(--line);vertical-align:top}
th{font-size:.85rem;color:var(--muted);letter-spacing:.02em}
td.n{font-variant-numeric:tabular-nums}

footer{border-top:1px solid var(--line);padding-block:22px;color:var(--muted);font-size:.9rem}
footer .wrap{display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between}

/* worlds */
.worlds{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:16px}
.world{display:flex;align-items:center;gap:14px;padding:16px;border-radius:var(--r);background:var(--card);box-shadow:var(--shadow),inset 0 -5px 0 var(--c);text-decoration:none;color:inherit;transition:transform .2s}
.world:hover{transform:translateY(-4px)}
.world.empty{opacity:.62}
.w-ico{flex:none;display:grid;place-items:center;width:62px;height:62px;border-radius:50%;background:var(--c);font-size:1.9rem;box-shadow:0 4px 0 rgba(0,0,0,.18)}
.w-body{display:flex;flex-direction:column;gap:4px;min-width:0;flex:1}
.world h3{font-size:1.35rem;line-height:1.3}
.w-count{font-size:.88rem;color:var(--muted);font-weight:700}
.world .bar{height:8px}
.world-hero{display:flex;align-items:center;gap:18px;margin:12px 0 18px;padding:20px;border-radius:var(--r);background:var(--card);box-shadow:var(--shadow),inset 0 -6px 0 var(--c)}
.world-hero .w-ico{width:84px;height:84px;font-size:2.6rem}
.world-hero h1{font-size:clamp(2rem,5vw,3rem)}
.world-hero p{margin:0;color:var(--muted)}
.card.soon{opacity:.6;filter:grayscale(.35);cursor:default}
.card.soon:hover{transform:none}
.card.soon .thumb{aspect-ratio:auto;height:72px}
.card.soon .soon-mark{inset:auto auto 50% 12px;transform:translateY(50%)}
.card.soon .body{padding-block:12px}
.soon-mark{position:absolute;inset:auto auto 12px 12px;background:rgba(255,255,255,.92);color:#1a1030;font-weight:800;border-radius:999px;padding:4px 14px}

.badge-row{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin:0 0 14px;color:var(--muted);font-weight:700}
.badge-row b{color:var(--ink)}
.badge{display:inline-grid;place-items:center;width:38px;height:38px;border-radius:50%;background:var(--c);font-size:1.2rem;box-shadow:0 3px 0 rgba(0,0,0,.18)}
.world{position:relative}
.w-badge{position:absolute;top:-9px;left:12px;background:var(--sun);color:var(--sun-ink);font-weight:800;font-size:.75rem;border-radius:999px;padding:2px 10px;box-shadow:0 2px 0 var(--sun-edge)}
.world.badged{box-shadow:var(--shadow),inset 0 -5px 0 var(--c),0 0 0 3px var(--sun)}

@media (max-width:820px){
  .hero .wrap,.feature,.layout{grid-template-columns:minmax(0,1fr)}
  .hero-art{max-width:300px}
  .nav a{padding:6px 10px}
}
@media (max-width:560px){ /* الشعار في سطر والقائمة في سطر واحد يمرَّر أفقياً عند الحاجة */
  .site-head .wrap{flex-wrap:wrap;row-gap:4px;padding-block:8px}
  .logo b{white-space:nowrap}
  .nav{flex-basis:100%;margin-inline-start:0;flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none;gap:2px}
  .nav a{white-space:nowrap;font-size:.92rem;padding:5px 8px}
}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}html{scroll-behavior:auto}}

/* access: free vs subscribers */
.pill.free{background:#5fe3c6;color:var(--mint-ink)}
.card.locked .thumb img{filter:saturate(.55) brightness(.8)}
.lock-mark{position:absolute;inset:auto auto 12px 12px;display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.94);color:#1a1030;font-weight:800;font-size:.85rem;border-radius:999px;padding:5px 12px}
.locked-player{position:relative}
.locked-player img{width:100%;aspect-ratio:16/9;object-fit:cover;filter:blur(3px) brightness(.55);transform:scale(1.04)}
.lock-over{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;color:#fff;text-align:center;padding:16px}
.lock-over b{font-family:var(--display);font-weight:400;font-size:clamp(1.4rem,4vw,2.2rem);text-shadow:0 2px 0 rgba(0,0,0,.4)}
.lock-ico{width:56px;height:56px;border-radius:50%;background:var(--sun);color:var(--sun-ink);display:grid;place-items:center}
.lock-ico svg{width:26px;height:26px}
.paywall p{line-height:1.8}
.muted{color:var(--muted);font-size:.92rem}

/* subscribe page */
.plans{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,300px),1fr));gap:20px;margin:22px 0}
.plan{background:var(--card);border-radius:var(--r);padding:22px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:10px}
.plan.main{box-shadow:var(--shadow),inset 0 0 0 3px var(--sun)}
.plan h2{font-size:1.9rem}
.plan .price{font-family:var(--display);font-size:2.2rem;color:var(--sun-edge)}
.plan .price small{font-family:inherit;font-size:1rem;color:var(--muted)}
.plan ul{margin:0;padding-inline-start:20px;display:grid;gap:6px;line-height:1.7}
.plan .btn{align-self:flex-start;margin-top:auto}
.plan .btn[aria-disabled="true"]{opacity:.6;cursor:not-allowed}
.faq details{background:var(--card);border-radius:16px;padding:12px 16px;margin-bottom:10px;box-shadow:var(--shadow)}
.faq summary{cursor:pointer;font-weight:800}
.faq p{margin:8px 0 0;line-height:1.8;color:var(--muted)}

/* account */
.acct{max-width:860px;display:grid;gap:20px;align-content:start}
.acct h2{font-size:1.8rem;margin-bottom:6px}
.acct p{line-height:1.8}
.acct-msg{border-radius:14px;padding:10px 16px;font-weight:700;background:var(--card);box-shadow:inset 4px 0 0 #5fe3c6}
.acct-msg[data-kind="error"]{box-shadow:inset 4px 0 0 var(--rose)}
.acct-form{display:grid;gap:8px;max-width:440px}
.acct-form label,.acct-form .lbl{font-weight:800}
.acct input:not([type=radio]):not([type=checkbox]){font:inherit;font-size:1.05rem;padding:10px 14px;border-radius:14px;border:2px solid var(--line);background:var(--bg-2);color:var(--ink);width:100%}
.acct input:focus-visible{outline:3px solid var(--sun);outline-offset:1px}
.acct-form .btn{justify-self:start}
.acct-list{line-height:1.8;padding-inline-start:20px}
.acct-check{display:flex;gap:10px;align-items:flex-start;font-weight:700;line-height:1.7;margin:8px 0}
.acct-check input{width:22px;height:22px;flex:none;margin-top:4px}
.btn:disabled{opacity:.55;cursor:not-allowed}
.kids{display:grid;gap:12px;margin:12px 0}
.kid{display:flex;align-items:center;gap:12px;flex-wrap:wrap;background:var(--bg);border-radius:18px;padding:12px 14px;border:2px solid transparent}
.kid.current{border-color:#5fe3c6}
.kid-ava{font-size:2.2rem;line-height:1}
.kid-body{display:grid;flex:1;min-width:120px}
.kid-body b{font-size:1.2rem}
.kid-acts{display:flex;gap:8px;flex-wrap:wrap}
.kid-acts .btn{padding:8px 14px;font-size:.92rem}
.kid-add{font:inherit;font-weight:800;justify-content:center;cursor:pointer;color:var(--muted);border:2px dashed var(--line)}
.kid-form{border-top:1px solid var(--line);padding-top:14px;max-width:none}
.kid-form h3{font-size:1.4rem}
.seg,.avatars{display:flex;flex-wrap:wrap;gap:8px}
.seg input,.avatars input{position:absolute;opacity:0;pointer-events:none}
.seg span,.avatars span{display:inline-grid;place-items:center;min-width:56px;padding:8px 14px;border-radius:14px;border:2px solid var(--line);background:var(--bg-2);font-weight:800;cursor:pointer}
.avatars span{font-size:1.7rem;padding:6px 10px}
.seg input:checked+span,.avatars input:checked+span{border-color:var(--sun);background:color-mix(in srgb,var(--sun) 22%,var(--bg-2))}
.seg input:focus-visible+span,.avatars input:focus-visible+span{outline:3px solid var(--sun)}
details.danger{margin-top:12px;border-top:1px solid var(--line);padding-top:12px}
details.danger summary{cursor:pointer;font-weight:800;color:var(--rose)}
details.danger input{max-width:260px}
.danger-btn{background:var(--rose);color:#fff;box-shadow:0 5px 0 #a8304f}
.who-chip{display:inline-flex;align-items:center;gap:6px;text-decoration:none;color:var(--ink);background:var(--card);border:2px solid #5fe3c6;border-radius:999px;padding:3px 12px 3px 10px;font-weight:800;max-width:40vw}
.who-chip span{font-size:1.3rem;line-height:1}
.who-chip b{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}