:root,[data-theme=dark]{
  --bg:#0F1220;--s1:#181C2E;--s2:#232944;--s3:#14182A;--ln:#262C47;--ln2:#2E3553;
  --tx:#F3F5FF;--mt:#A3AACB;--mt2:#8A92B5;--dim:#6B7395;
  --lime:#B6F23F;--lime-d:#7FB61A;--lime-tx:#D4FF7A;--lime-bg:#1E2D14;
  --vio:#8D7BFF;--vio-d:#5B4BD6;--vio-tx:#B9AEFF;--vio-bg:#1A1838;
  --sky:#4CC9FF;--sky-d:#1F7FAE;--sky-bg:#12283A;
  --gold:#FFC93C;--gold-d:#C98F00;--gold-bg:#2B2412;
  --ora:#FF9A3D;--ora-d:#C46A16;--ora-bg:#33210F;
  --red:#FF5B6E;--red-d:#C9354A;--red-tx:#FF9AA6;--red-bg:#341620;
  --nav:#121626;--on-lime:#0F1220;--card-sh:#0A0C17;
  color-scheme:dark;
}
[data-theme=light]{
  --bg:#F3F5FB;--s1:#FFFFFF;--s2:#E6EAF4;--s3:#F7F8FC;--ln:#DFE3EF;--ln2:#CDD3E4;
  --tx:#12162A;--mt:#4F5878;--mt2:#5F6889;--dim:#7A82A0;
  --lime:#A6E22E;--lime-d:#6F9F14;--lime-tx:#3F6600;--lime-bg:#EEF9D9;
  --vio:#7A66F5;--vio-d:#4F3CCB;--vio-tx:#4F3CCB;--vio-bg:#EEEBFF;
  --sky:#2BB5F0;--sky-d:#137BA8;--sky-bg:#E3F5FD;
  --gold:#FFC22E;--gold-d:#C98F00;--gold-bg:#FFF6DC;
  --ora:#FF8C24;--ora-d:#C4620A;--ora-bg:#FFEEDD;
  --red:#F2475C;--red-d:#B92A3E;--red-tx:#B92A3E;--red-bg:#FFE6EA;
  --nav:#FFFFFF;--on-lime:#12162A;--card-sh:#D5DAE8;
  color-scheme:light;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;background:var(--bg);color:var(--tx)}
body{font-family:'IBM Plex Sans Arabic','IBM Plex Sans',system-ui,sans-serif;-webkit-font-smoothing:antialiased;min-height:100vh;min-height:100dvh;overflow-x:hidden}
button,input{font:inherit;color:inherit}
button{cursor:pointer}
a{color:var(--lime-tx)}
.en{font-family:'IBM Plex Sans',system-ui,sans-serif}
.num{font-family:'IBM Plex Mono',ui-monospace,monospace;font-weight:600}
.mt{color:var(--mt)}
#app{max-width:480px;margin:0 auto;min-height:100vh;min-height:100dvh;position:relative}
.scr{padding:0 16px calc(104px + env(safe-area-inset-bottom));animation:scrIn .35s cubic-bezier(.2,.8,.2,1) both}
.scr.full{padding-bottom:24px}
@keyframes scrIn{from{opacity:0}to{opacity:1}}
h1,h2,h3{margin:0}
.hide{display:none!important}

/* ---------- buttons ---------- */
.btn{display:flex;align-items:center;justify-content:center;gap:8px;width:100%;min-height:56px;border:0;border-radius:18px;font-weight:700;font-size:18px;text-decoration:none;transition:transform .12s,box-shadow .12s,background .2s,filter .2s}
.btn.g{background:var(--lime);color:var(--on-lime);box-shadow:0 6px 0 var(--lime-d)}
.btn.g:active{transform:translateY(5px);box-shadow:0 1px 0 var(--lime-d)}
.btn.r{background:var(--red);color:#1A0A0F;box-shadow:0 6px 0 var(--red-d)}
.btn.r:active{transform:translateY(5px);box-shadow:0 1px 0 var(--red-d)}
.btn.v{background:var(--vio);color:#fff;box-shadow:0 6px 0 var(--vio-d)}
.btn.v:active{transform:translateY(5px);box-shadow:0 1px 0 var(--vio-d)}
.btn.off{background:var(--s2);color:var(--dim);box-shadow:0 6px 0 var(--card-sh);cursor:default}
.btn.gh{background:transparent;color:var(--mt);min-height:48px;font-size:16px}
.btn[disabled]{opacity:.6}
.ib{width:44px;height:44px;border-radius:12px;border:0;background:transparent;color:var(--mt2);display:flex;align-items:center;justify-content:center;flex:none}
.ib:hover{color:var(--tx)}

/* ---------- top bar & chips ---------- */
.top{position:sticky;top:0;z-index:20;margin:0 -16px;padding:calc(12px + env(safe-area-inset-top)) 16px 10px;background:var(--bg);display:flex;align-items:center;justify-content:space-between;gap:8px;border-bottom:1px solid var(--ln)}
.chips{display:flex;gap:6px}
.chip{display:flex;align-items:center;gap:5px;height:36px;padding:0 11px;border-radius:12px;background:var(--s1);border:1px solid var(--ln);font-weight:700;font-size:14px;white-space:nowrap}
.chip.f{color:var(--ora)}.chip.x{color:var(--lime-tx)}.chip.c{color:var(--gold-d)}
[data-theme=dark] .chip.c{color:var(--gold)}
.brand{display:flex;align-items:center;gap:8px;min-width:0}
.brand img{width:36px;height:36px;border-radius:11px;object-fit:cover}
.brand b{font-size:15px;display:block;line-height:1.2}
.brand small{font-size:11px;color:var(--mt);display:block}

/* ---------- cards ---------- */
.card{border-radius:22px;background:var(--s1);border:1px solid var(--ln);padding:16px}
.goal{margin-top:14px;display:flex;gap:14px;align-items:center}
.ring{position:relative;width:66px;height:66px;flex:none}
.ring svg{transform:rotate(-90deg)}
.ring .rb{fill:none;stroke:var(--s2);stroke-width:7}
.ring .rf{fill:none;stroke:var(--lime);stroke-width:7;stroke-linecap:round;transition:stroke-dashoffset 1.4s cubic-bezier(.2,.8,.2,1)}
.ring i{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;font-style:normal;font-size:24px}
.goal small{font-size:13px;color:var(--mt);font-weight:600}
.goal .gv{font-size:20px;font-weight:700;margin-top:2px}
.goal .gt{font-size:13px;color:var(--lime-tx);margin-top:2px;font-weight:600}
.week{margin-top:10px;padding:12px 10px;display:flex;justify-content:space-between}
.week div{display:flex;flex-direction:column;align-items:center;gap:4px;font-size:11px;color:var(--mt)}
.week span{width:30px;height:30px;border-radius:50%;background:var(--s2);display:flex;align-items:center;justify-content:center;font-size:15px}
.week .on span{background:var(--ora)}
.week .td{color:var(--tx);font-weight:700}
.week .td span{border:2px dashed var(--ora);background:transparent;width:30px;height:30px}
.week .td.on span{border:0;background:var(--ora)}

.unit{margin-top:14px;padding:16px;border-radius:22px;background:var(--lime);color:var(--on-lime);box-shadow:0 6px 0 var(--lime-d);display:flex;align-items:center;justify-content:space-between;gap:12px}
.unit small{font-size:12px;font-weight:700;opacity:.75;display:block}
.unit b{font-size:20px;display:block;margin-top:2px}
.unit .pb{margin-top:10px;height:8px;width:170px;border-radius:99px;background:rgba(15,18,32,.18);overflow:hidden}
.unit .pb i{display:block;height:100%;background:var(--on-lime);border-radius:99px;transition:width 1s cubic-bezier(.2,.8,.2,1)}
.unit .ub{width:52px;height:52px;border-radius:16px;background:var(--on-lime);color:var(--lime);display:flex;align-items:center;justify-content:center;border:0;flex:none;box-shadow:0 4px 0 rgba(15,18,32,.35)}
.unit .ub:active{transform:translateY(3px);box-shadow:none}

/* ---------- path ---------- */
.path{padding:30px 0 20px;display:flex;flex-direction:column;align-items:center;gap:22px}
.pt{width:100%;display:flex;align-items:center;gap:12px;color:var(--mt);font-size:14px;font-weight:700;margin:14px 0 2px}
.pt::before,.pt::after{content:"";flex:1;height:2px;background:var(--s2)}
.pt.on{color:var(--tx)}
.nw{position:relative;display:flex;flex-direction:column;align-items:center}
.node{width:78px;height:72px;border-radius:50%;border:0;display:flex;align-items:center;justify-content:center;font-size:32px;position:relative;transition:transform .15s,box-shadow .15s}
.node::before{content:"";position:absolute;top:6px;left:14%;right:14%;height:38%;border-radius:50% 50% 45% 45%;background:linear-gradient(180deg,rgba(255,255,255,.42),rgba(255,255,255,0));pointer-events:none}
.node.sq::before{border-radius:16px 16px 40% 40%}
.node .gl{position:relative;filter:drop-shadow(0 2px 0 rgba(0,0,0,.18))}
.node.done{background:linear-gradient(180deg,#3DDC74,#16A34A);color:#fff;box-shadow:0 7px 0 #0F7A37,inset 0 -3px 0 rgba(0,0,0,.12)}
.node.cur{background:linear-gradient(180deg,#D2FF6A,var(--lime));color:#14260A;box-shadow:0 7px 0 var(--lime-d),inset 0 -3px 0 rgba(0,0,0,.08)}
.node.lock{background:linear-gradient(180deg,#3A4163,#2A3050);color:#59617F;box-shadow:0 7px 0 #1A1F35}
.node.lock::before{opacity:.25}
[data-theme=light] .node.lock{background:linear-gradient(180deg,#E3E7F0,#CDD3E2);color:#A3AABF;box-shadow:0 7px 0 #B3BACB}
.node.sq{border-radius:22px}
.node.big{width:92px;height:84px;font-size:38px}
.node:active{transform:translateY(6px);box-shadow:0 1px 0 var(--card-sh)}
.node .ck{position:absolute;bottom:-3px;left:-3px;width:24px;height:24px;border-radius:50%;background:#fff;color:#16A34A;display:flex;align-items:center;justify-content:center;box-shadow:0 2px 6px rgba(0,0,0,.3)}
.node .ck svg{stroke-width:3.2}
.node .ck .gl{color:#F5B400;filter:none}
.nl{margin-top:12px;font-size:12px;color:var(--mt);font-weight:600;text-align:center;max-width:140px}
.pulse{position:absolute;inset:-6px;border-radius:50%;border:3px solid var(--lime);animation:pulse 1.8s ease-out infinite;pointer-events:none}
.bubble{position:absolute;bottom:94px;left:50%;transform:translateX(-50%);white-space:nowrap;padding:9px 12px;border-radius:14px;background:#fff;color:#0F1220;font-size:14px;font-weight:700;box-shadow:0 4px 0 #C9CEE6;animation:bob 1.6s ease-in-out infinite;z-index:2}
.bubble::after{content:"";position:absolute;bottom:-7px;left:50%;margin-left:-7px;width:14px;height:14px;background:#fff;transform:rotate(45deg)}
.bubble em{font-style:normal;color:#5B8A00}
@keyframes pulse{0%{transform:scale(1);opacity:.7}100%{transform:scale(1.55);opacity:0}}
@keyframes bob{0%,100%{transform:translateX(-50%) translateY(0)}50%{transform:translateX(-50%) translateY(-6px)}}

/* ---------- bottom nav ---------- */
.nav{position:fixed;left:50%;transform:translateX(-50%);bottom:0;width:100%;max-width:480px;z-index:30;background:var(--nav);border-top:1px solid var(--ln);display:flex;justify-content:space-around;padding:8px 4px calc(8px + env(safe-area-inset-bottom))}
.nav button{display:flex;flex-direction:column;align-items:center;gap:3px;min-width:62px;min-height:54px;border:0;background:none;color:var(--mt2);font-size:11px;font-weight:600;transition:color .2s}
.nav .ic{width:52px;height:32px;border-radius:12px;display:flex;align-items:center;justify-content:center;transition:background .25s,transform .3s cubic-bezier(.3,1.6,.5,1)}
.nav button.on{color:var(--lime-tx)}
[data-theme=dark] .nav button.on{color:var(--lime)}
.nav button.on .ic{background:color-mix(in srgb,var(--lime) 16%,transparent);transform:translateY(-2px)}

/* ---------- login ---------- */
.login{min-height:100vh;min-height:100dvh;display:flex;flex-direction:column;padding:0;position:relative;overflow:hidden}
.hero{position:relative;height:250px;display:flex;align-items:center;justify-content:center;flex:none}
.hero .glow{position:absolute;top:-160px;left:50%;margin-left:-260px;width:520px;height:560px;border-radius:50%;background:radial-gradient(closest-side,color-mix(in srgb,var(--vio) 34%,transparent),transparent);pointer-events:none}
.hero .orb{position:absolute;width:250px;height:250px;border-radius:50%;border:2px dashed var(--ln2);animation:spin 18s linear infinite}
.hero .lg{width:132px;height:132px;border-radius:40px;background:var(--s1);border:2px solid var(--ln);box-shadow:0 8px 0 var(--card-sh),0 0 60px color-mix(in srgb,var(--lime) 25%,transparent);display:flex;align-items:center;justify-content:center;animation:fadeUp .7s cubic-bezier(.2,.8,.2,1) both;position:relative}
.hero .lg img{width:112px;height:112px;border-radius:30px;object-fit:cover}
.tile{position:absolute;display:flex;align-items:center;justify-content:center;font-weight:700;animation:floaty 4s ease-in-out infinite}
.tw{position:absolute;animation:twinkle 2.4s ease-in-out infinite}
.lgt{position:relative;text-align:center;padding:0 24px;margin-top:-8px;animation:fadeUp .7s .1s cubic-bezier(.2,.8,.2,1) both}
.lgt h1{font-size:32px;line-height:1.25;letter-spacing:-.3px}
.lgt h1 span{color:var(--lime-tx)}
[data-theme=dark] .lgt h1 span{color:var(--lime)}
.lgt p{margin:10px 0 0;font-size:15px;line-height:1.6;color:var(--mt)}
.lsheet{margin-top:auto;padding:22px 20px calc(24px + env(safe-area-inset-bottom));background:var(--s3);border-top:1px solid var(--ln);border-radius:30px 30px 0 0;display:flex;flex-direction:column;gap:12px;animation:fadeUp .7s .2s cubic-bezier(.2,.8,.2,1) both}
[data-theme=dark] .lsheet{background:#151929}
.fld{display:flex;flex-direction:column;gap:6px;font-size:13px;font-weight:600;color:var(--mt)}
[hidden]{display:none!important}
.inp{width:100%;height:54px;border-radius:16px;border:2px solid var(--ln2);background:var(--s1);color:var(--tx);font-size:16px;font-weight:500;padding:0 16px;outline:none;transition:border-color .2s,box-shadow .2s}
.inp::placeholder{color:var(--dim)}
.inp:focus{border-color:var(--lime);box-shadow:0 0 0 4px color-mix(in srgb,var(--lime) 18%,transparent)}
.segs{display:flex;gap:10px}
.sg{flex:1;height:50px;border-radius:14px;border:2px solid var(--ln2);background:var(--s1);color:var(--mt);font-weight:600;font-size:15px;transition:all .2s cubic-bezier(.2,.8,.2,1)}
.sg.on{border-color:var(--vio);background:var(--vio-bg);color:var(--tx);box-shadow:0 4px 0 var(--vio-d);transform:translateY(-2px)}
.err{min-height:20px;margin:0;color:var(--red);font-size:14px;font-weight:600;text-align:center}
.lnote{margin:2px 0 0;text-align:center;font-size:13px;color:var(--mt)}

/* ---------- lesson ---------- */
.lh{display:flex;align-items:center;gap:12px;padding:calc(16px + env(safe-area-inset-top)) 0 0}
.ptrack{flex:1;height:16px;border-radius:99px;background:var(--s2);overflow:hidden}
.pfill{height:100%;border-radius:99px;background:var(--lime);box-shadow:inset 0 -4px 0 rgba(0,0,0,.12),inset 0 4px 0 rgba(255,255,255,.35);transition:width .6s cubic-bezier(.3,1.4,.5,1)}
.lcount{font-size:14px;font-weight:700;color:var(--mt)}
.qmeta{display:flex;align-items:center;justify-content:space-between;min-height:30px;margin-top:22px}
.qt{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:700;color:var(--vio-tx)}
.combo{padding:5px 10px;border-radius:99px;background:var(--ora-bg);color:var(--ora);font-size:13px;font-weight:700;animation:pop .5s cubic-bezier(.3,1.8,.5,1)}
.qh{margin:8px 0 0;font-size:23px;font-weight:700}
.wcard{margin-top:18px;display:flex;align-items:center;gap:14px;padding:16px;border-radius:22px;background:var(--s1);border:1px solid var(--ln)}
.wcard .w{flex:1;text-align:left;direction:ltr;font-size:30px;font-weight:700;letter-spacing:-.3px;word-break:break-word}
.wcard .w.ar{direction:rtl;text-align:right;font-family:'IBM Plex Sans Arabic',sans-serif}
.wcard .s{flex:1;text-align:left;direction:ltr;font-size:20px;font-weight:600;line-height:1.55}
.blank{display:inline-block;min-width:70px;padding:0 6px;border-bottom:3px solid var(--sky);color:var(--sky);text-align:center}
.hint{margin-top:8px;font-size:13px;color:var(--mt)}
.spk{width:64px;height:64px;border-radius:20px;border:0;background:var(--sky);color:#0F1220;display:flex;align-items:center;justify-content:center;flex:none;box-shadow:0 5px 0 var(--sky-d);transition:transform .12s,box-shadow .12s}
.spk:active{transform:translateY(4px);box-shadow:0 1px 0 var(--sky-d)}
.spk.sm{width:48px;height:48px;border-radius:14px}
.spk.xl{width:120px;height:120px;border-radius:32px}
.lst{margin-top:18px;display:flex;flex-direction:column;align-items:center;gap:10px}
.slow{height:40px;padding:0 14px;border-radius:12px;border:1px solid var(--ln2);background:var(--s1);color:var(--mt);font-size:13px;font-weight:600}
.opts{margin-top:22px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.opt{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;min-height:96px;padding:12px 8px;border-radius:20px;border:2px solid var(--ln2);background:var(--s1);color:var(--tx);font-weight:700;font-size:18px;box-shadow:0 5px 0 var(--s2);transition:transform .15s cubic-bezier(.3,1.6,.5,1),border-color .2s,background .2s,box-shadow .15s,opacity .2s;word-break:break-word}
.opt b{font-size:12px;color:var(--dim);font-family:'IBM Plex Mono',monospace}
.opt:active{transform:translateY(4px);box-shadow:0 1px 0 var(--s2)}
.opt.sel{border-color:var(--sky);background:var(--sky-bg);box-shadow:0 5px 0 var(--sky-d);transform:translateY(-2px)}
.opt.ok{border-color:var(--lime);background:var(--lime-bg);color:var(--lime-tx);box-shadow:0 5px 0 var(--lime-d);animation:pop .5s cubic-bezier(.3,1.8,.5,1)}
.opt.no{border-color:var(--red);background:var(--red-bg);color:var(--red-tx);box-shadow:0 5px 0 var(--red-d);animation:shake .45s cubic-bezier(.36,.07,.19,.97)}
.opt.dim{opacity:.4}
.lfoot{position:fixed;left:50%;transform:translateX(-50%);bottom:0;width:100%;max-width:480px;padding:12px 20px calc(20px + env(safe-area-inset-bottom));background:var(--bg);z-index:25}
.fb{position:fixed;left:50%;bottom:0;width:100%;max-width:480px;z-index:40;padding:20px 20px calc(24px + env(safe-area-inset-bottom));border-radius:28px 28px 0 0;animation:sheetUp .45s cubic-bezier(.2,1.2,.4,1) both;transform:translateX(-50%)}
.fb.ok{background:var(--lime-bg);border-top:2px solid var(--lime)}
.fb.no{background:var(--red-bg);border-top:2px solid var(--red)}
.fb .row{display:flex;align-items:center;gap:12px}
.fb .ico{width:52px;height:52px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:26px;flex:none}
.fb.ok .ico{background:var(--lime)}.fb.no .ico{background:var(--red)}
.fb h3{font-size:21px}
.fb.ok h3{color:var(--lime-tx)}.fb.no h3{color:var(--red-tx)}
.fb p{margin:2px 0 0;font-size:15px;font-weight:600}
.fb .btn{margin-top:16px}
.xpf{position:absolute;top:-36px;left:24px;font:700 22px 'IBM Plex Mono',monospace;color:var(--gold);animation:rise 1.2s ease-out both;pointer-events:none}
@keyframes sheetUp{from{transform:translateX(-50%) translateY(100%)}to{transform:translateX(-50%)}}

/* ---------- learn (flashcard) ---------- */
.flash{margin-top:26px;perspective:1200px}
.fc{position:relative;height:260px;border:0;width:100%;background:none;padding:0;transform-style:preserve-3d;transition:transform .6s cubic-bezier(.3,1.3,.5,1)}
.fc.flip{transform:rotateY(180deg)}
.fc>div{position:absolute;inset:0;border-radius:28px;backface-visibility:hidden;-webkit-backface-visibility:hidden;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;padding:20px}
.fc .fr{background:var(--vio);color:#fff;box-shadow:0 8px 0 var(--vio-d)}
.fc .bk{background:var(--s1);border:2px solid var(--lime);transform:rotateY(180deg);box-shadow:0 8px 0 var(--lime-d)}
.fc .fr .w{font-size:44px;font-weight:700;direction:ltr;letter-spacing:-.5px;text-align:center;word-break:break-word}
.fc .fr small{font-size:13px;opacity:.85}
.fc .bk .m{font-size:34px;font-weight:700;color:var(--lime-tx);text-align:center}
.lsen{margin-top:18px;padding:16px;border-radius:20px;background:var(--s1);border:1px solid var(--ln);display:flex;gap:12px;align-items:center}
.lsen p{flex:1;margin:0;direction:ltr;text-align:left;font-size:17px;line-height:1.6}
.lsen mark{background:color-mix(in srgb,var(--lime) 26%,transparent);color:inherit;border-radius:5px;padding:0 3px}
.dots{display:flex;gap:6px;justify-content:center;margin-top:16px}
.dots i{width:8px;height:8px;border-radius:99px;background:var(--s2);transition:all .3s}
.dots i.on{background:var(--lime)}.dots i.cu{width:24px;background:var(--vio)}

/* ---------- reward / result ---------- */
.rw{min-height:100vh;min-height:100dvh;display:flex;flex-direction:column;padding-top:env(safe-area-inset-top)}
.rhero{position:relative;height:250px;display:flex;align-items:center;justify-content:center;overflow:hidden;flex:none}
.rays{position:absolute;width:520px;height:520px;border-radius:50%;background:repeating-conic-gradient(color-mix(in srgb,var(--gold) 15%,transparent) 0deg 10deg,transparent 10deg 24deg);animation:spin 26s linear infinite;-webkit-mask:radial-gradient(circle,#000 20%,transparent 68%);mask:radial-gradient(circle,#000 20%,transparent 68%)}
.rays.bad{background:repeating-conic-gradient(color-mix(in srgb,var(--sky) 12%,transparent) 0deg 10deg,transparent 10deg 24deg)}
.trophy{font-size:108px;line-height:1;animation:land .9s cubic-bezier(.3,1.7,.5,1) both;position:relative}
.stars{position:absolute;bottom:4px;display:flex;gap:10px}
.star{font-size:40px;animation:starIn .55s cubic-bezier(.3,1.9,.5,1) both}
.star.off{filter:grayscale(1) brightness(.5)}
.rw h1{text-align:center;font-size:28px}
.rw .sub{text-align:center;margin:4px 0 0;color:var(--mt);font-size:15px}
.tiles{display:flex;gap:10px;margin-top:18px}
.tl{flex:1;border-radius:18px;border:2px solid;padding:10px 6px 12px;text-align:center;animation:fadeUp .6s cubic-bezier(.2,.8,.2,1) both}
.tl small{display:block;font-size:12px;font-weight:700}
.tl b{display:block;font:600 26px 'IBM Plex Mono',monospace;margin-top:4px}
.tl.a{border-color:var(--lime);background:var(--lime-bg);color:var(--lime-tx)}
.tl.b{border-color:var(--sky);background:var(--sky-bg);color:var(--sky-d)}
.tl.c{border-color:var(--ora);background:var(--ora-bg);color:var(--ora-d)}
[data-theme=dark] .tl.b{color:#7FD8FF}[data-theme=dark] .tl.c{color:#FFB066}
.chest{margin-top:14px;width:100%;border:2px dashed var(--vio);background:var(--vio-bg);border-radius:22px;padding:14px 16px;display:flex;align-items:center;gap:14px;text-align:right;transition:transform .15s}
.chest:active{transform:scale(.97)}
.chest .bx{font-size:44px;animation:wiggle 1.4s ease-in-out infinite}
.chest b{display:block;font-size:17px}
.chest small{display:block;font-size:13px;color:var(--vio-tx);margin-top:2px}
.chest.op{border-style:solid;border-color:var(--gold);background:var(--gold-bg);animation:pop .5s cubic-bezier(.3,1.8,.5,1)}
.chest.op .bx{animation:pop .6s cubic-bezier(.3,1.8,.5,1)}
.hook{margin-top:12px;display:flex;align-items:center;gap:12px;padding:12px 14px;border-radius:18px;background:var(--s1);border:1px solid var(--ln);font-size:14px;line-height:1.5;width:100%;text-align:right}
.hook>span:first-child{font-size:26px}
.rfoot{margin-top:auto;padding:18px 0 calc(16px + env(safe-area-inset-bottom));display:flex;flex-direction:column;gap:10px}
.nextl{text-align:center;font-size:13px;color:var(--mt)}
.wl{margin-top:14px;border-radius:20px;background:var(--s1);border:1px solid var(--ln);overflow:hidden}
.wl div{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:13px 16px;border-bottom:1px solid var(--ln)}
.wl div:last-child{border-bottom:0}
.wl b{direction:ltr}

/* ---------- stories ---------- */
.ph{display:flex;align-items:center;justify-content:space-between;padding:calc(16px + env(safe-area-inset-top)) 0 10px;gap:10px}
.ph h1{font-size:26px}
.tag{padding:6px 10px;border-radius:12px;background:var(--vio-bg);color:var(--vio-tx);font-size:13px;font-weight:700;white-space:nowrap}
.stl{display:flex;flex-direction:column;gap:12px;margin-top:6px}
.sc{display:flex;align-items:center;gap:14px;padding:12px;border-radius:20px;background:var(--s1);border:1px solid var(--ln);width:100%;text-align:right;transition:transform .15s,border-color .2s;animation:fadeUp .5s cubic-bezier(.2,.8,.2,1) both}
.sc:active{transform:scale(.98)}
.sc .cv{width:64px;height:64px;border-radius:18px;display:flex;align-items:center;justify-content:center;font-size:34px;flex:none}
.sc .t{flex:1;min-width:0}
.sc .t b{display:block;font-size:17px;direction:ltr;text-align:right}
.sc .t small{display:block;font-size:12px;color:var(--mt);margin-top:2px}
.sc .st{font-size:12px;font-weight:700;white-space:nowrap}
.stg{font-size:13px;font-weight:700;color:var(--mt);margin:10px 4px 0}
.stg:first-child{margin-top:0}
.sc.lk{opacity:.55}
.sc.lk .cv{filter:grayscale(1)}
.shead{display:flex;gap:14px;align-items:center;margin-top:6px}
.shead .cv{width:84px;height:84px;border-radius:22px;display:flex;align-items:center;justify-content:center;font-size:46px;flex:none}
.shead b{display:block;font-size:21px;direction:ltr;text-align:right}
.shead small{display:block;font-size:13px;color:var(--mt);margin-top:3px}
.pills{display:flex;gap:6px;margin-top:8px;flex-wrap:wrap}
.pl{padding:3px 8px;border-radius:8px;font-size:12px;font-weight:700;background:var(--s2);color:var(--mt)}
.pl.g{background:var(--lime-bg);color:var(--lime-tx)}
.reader{margin-top:12px;padding:16px;border-radius:22px;background:var(--s1);border:1px solid var(--ln);font-size:18px;line-height:1.85;direction:ltr;text-align:left}
.sen{border-radius:8px;padding:2px;transition:background .35s,color .35s;color:var(--mt)}
[data-theme=light] .sen{color:#2B3150}
.sen.on{background:color-mix(in srgb,var(--vio) 22%,transparent);color:var(--tx)}
.vw{display:inline;border:0;background:none;padding:0 1px;font:inherit;color:var(--lime-tx);border-bottom:2px dotted color-mix(in srgb,var(--lime) 70%,transparent);border-radius:2px;transition:background .2s}
[data-theme=dark] .vw{color:var(--lime)}
.vw:hover{background:color-mix(in srgb,var(--lime) 15%,transparent)}
.player{position:fixed;left:50%;transform:translateX(-50%);bottom:calc(70px + env(safe-area-inset-bottom));width:100%;max-width:480px;z-index:29;background:var(--s3);border-top:1px solid var(--ln);padding:10px 16px 12px}
[data-theme=dark] .player{background:#151929}
.pbar{height:5px;border-radius:99px;background:var(--s2);overflow:hidden}
.pbar i{display:block;height:100%;border-radius:99px;background:var(--vio);transition:width .5s ease}
.prow{display:flex;align-items:center;gap:12px;margin-top:8px}
.play{width:56px;height:56px;border-radius:50%;border:0;background:var(--lime);color:var(--on-lime);display:flex;align-items:center;justify-content:center;flex:none;box-shadow:0 4px 0 var(--lime-d);transition:transform .12s,box-shadow .12s}
.play:active{transform:translateY(3px);box-shadow:0 1px 0 var(--lime-d)}
.spd{height:36px;min-width:52px;border-radius:10px;border:1px solid var(--ln2);background:var(--s1);font:600 13px 'IBM Plex Mono',monospace}
.wave{height:22px;display:flex;align-items:center}
.wave span{display:inline-block;width:3px;margin:0 1px;border-radius:2px;background:var(--vio);animation:wv 1s ease-in-out infinite}
.pop{position:fixed;left:50%;transform:translateX(-50%);width:calc(100% - 28px);max-width:452px;bottom:calc(170px + env(safe-area-inset-bottom));z-index:35;padding:16px;border-radius:22px;background:#F3F5FF;color:#0F1220;box-shadow:0 18px 40px rgba(0,0,0,.45);animation:popIn .35s cubic-bezier(.3,1.6,.5,1) both}
[data-theme=light] .pop{background:#12162A;color:#F3F5FF}
.pop .pr{display:flex;align-items:center;gap:12px}
.pop b{display:block;font-size:22px;direction:ltr;text-align:right}
.pop span.ar{display:block;font-size:16px;font-weight:600;opacity:.8}
.pop .sv{margin-top:12px;width:100%;height:44px;border-radius:12px;border:0;font-weight:700;font-size:14px;background:#0F1220;color:#B6F23F}
[data-theme=light] .pop .sv{background:#B6F23F;color:#0F1220}
.pop .sv.on{background:#B6F23F;color:#0F1220}
@keyframes popIn{from{opacity:0;transform:translateX(-50%) translateY(14px) scale(.96)}to{opacity:1;transform:translateX(-50%)}}
@keyframes wv{0%,100%{height:6px}50%{height:20px}}

/* ---------- leaderboard ---------- */
.lgs{display:flex;align-items:center;justify-content:center;gap:10px;padding-top:calc(18px + env(safe-area-inset-top))}
.lgb{width:46px;height:46px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:24px;background:var(--s1);border:1px solid var(--ln)}
.lgb.dim{filter:grayscale(1);opacity:.35}
.lgb.cur{width:64px;height:64px;font-size:34px;border-radius:20px;background:color-mix(in srgb,#2EE6B0 18%,var(--s1));border:2px solid #2EE6B0;box-shadow:0 0 30px rgba(46,230,176,.35);animation:floaty 3s ease-in-out infinite}
.lbt{text-align:center;margin-top:12px;font-size:24px}
.lbs{margin:4px 0 0;text-align:center;font-size:13px;color:var(--mt)}
.lbs b{color:var(--gold-d)}
[data-theme=dark] .lbs b{color:var(--gold)}
.tabs{margin-top:14px;display:flex;gap:4px;padding:4px;border-radius:14px;background:var(--s1);border:1px solid var(--ln)}
.tabs button{flex:1;height:40px;border:0;border-radius:11px;background:transparent;color:var(--mt);font-weight:600;font-size:14px;transition:all .25s}
.tabs button.on{background:var(--tx);color:var(--bg)}
.podium{display:flex;align-items:flex-end;justify-content:center;gap:8px;margin-top:22px}
.pd{display:flex;flex-direction:column;align-items:center;gap:5px;animation:riseUp .8s cubic-bezier(.3,1.5,.5,1) both;min-width:0;width:100px}
.pd .nm{font-size:14px;font-weight:700;max-width:100px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.pd .xp{font-size:12px;color:var(--mt)}
.av{border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;color:#0F1220;flex:none}
.bar{width:96px;border-radius:16px 16px 0 0;display:flex;align-items:flex-start;justify-content:center;padding-top:8px;font:700 26px 'IBM Plex Mono',monospace;color:#0F1220}
.lbl{padding:8px;border-radius:0 0 22px 22px;background:var(--s1);border:1px solid var(--ln);display:flex;flex-direction:column;gap:4px}
.rr{display:flex;align-items:center;gap:12px;padding:10px 12px;border-radius:16px;animation:fadeUp .5s cubic-bezier(.2,.8,.2,1) both}
.rr.me{background:var(--lime-bg);border:2px solid var(--lime);box-shadow:0 4px 0 var(--lime-d)}
.rr .rk{width:24px;text-align:center;font-size:15px;color:var(--mt)}
.rr .nm{flex:1;min-width:0}
.rr .nm b{display:block;font-size:15px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.rr .nm small{display:block;font-size:12px;color:var(--mt)}
.zone{display:flex;align-items:center;gap:8px;padding:6px 4px;color:#1FAE84;font-size:12px;font-weight:700}
.zone::before,.zone::after{content:"";flex:1;height:2px;background:currentColor;opacity:.3}
.empty{padding:28px 12px;text-align:center;color:var(--mt);font-size:14px}

/* ---------- achievements ---------- */
.prof{display:flex;align-items:center;gap:14px;padding-top:calc(20px + env(safe-area-inset-top))}
.pav{position:relative;flex:none}
.pav>div{width:76px;height:76px;border-radius:50%;background:var(--lime);display:flex;align-items:center;justify-content:center;font-size:34px;font-weight:700;color:var(--on-lime);box-shadow:0 0 0 4px var(--bg),0 0 0 6px var(--lime)}
.pav span{position:absolute;bottom:-6px;left:50%;transform:translateX(-50%);padding:2px 8px;border-radius:8px;background:var(--vio);color:#fff;font:600 12px 'IBM Plex Mono',monospace;white-space:nowrap}
.prof h1{font-size:22px}
.lvl{display:flex;align-items:center;gap:8px;margin-top:8px}
.lvl>div{flex:1;height:8px;border-radius:99px;background:var(--s2);overflow:hidden}
.lvl>div i{display:block;height:100%;border-radius:99px;background:var(--vio);animation:grow 1.2s cubic-bezier(.2,.8,.2,1) both}
.lvl small{font-size:11px;color:var(--vio-tx)}
.sgrid{margin-top:18px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
.stt{padding:12px;border-radius:18px;background:var(--s1);border:1px solid var(--ln);display:flex;align-items:center;gap:10px}
.stt>span{font-size:26px}
.stt b{display:block;font:600 18px 'IBM Plex Mono',monospace}
.stt small{display:block;font-size:12px;color:var(--mt)}
.sh2{display:flex;align-items:center;justify-content:space-between;margin-top:22px}
.sh2 h2{font-size:18px}
.sh2 small{font-size:13px;color:var(--mt)}
.cups{display:flex;gap:10px;overflow-x:auto;margin:10px -16px 0;padding:0 16px 6px;scrollbar-width:none}
.cups::-webkit-scrollbar{display:none}
.cup{flex:none;width:92px;padding:12px 6px;border-radius:18px;background:var(--s1);border:1px solid var(--ln);text-align:center}
.cup .e{font-size:40px;line-height:1.1}
.cup b{display:block;font-size:13px;margin-top:4px}
.cup small{display:block;font-size:11px;color:var(--mt)}
.cup.lk .e{filter:grayscale(1) brightness(.5)}
.cup.gd{background:var(--gold-bg);border-color:var(--gold)}
.cup.cert{border:0;font:inherit;color:inherit}
.mgrid{margin-top:12px;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}
.md{display:flex;flex-direction:column;align-items:center;gap:6px;padding:12px 4px;border-radius:18px;border:1px solid var(--ln);background:var(--s1);transition:transform .15s cubic-bezier(.3,1.6,.5,1),border-color .2s}
.md:active{transform:scale(.95)}
.md .c{width:56px;height:56px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:28px}
.md.done .c{background:var(--gold);box-shadow:0 4px 0 var(--gold-d)}
.md.prog .c{background:var(--vio-bg);box-shadow:0 4px 0 var(--vio-d)}
.md.lock .c{background:var(--s2);box-shadow:0 4px 0 var(--card-sh)}
.md.lock .c span{filter:grayscale(1);opacity:.4}
.md.on{border-color:var(--lime)}
.md>b{font-size:13px}
.md .pb{width:70%;height:6px;border-radius:99px;background:var(--s2);overflow:hidden}
.md .pb i{display:block;height:100%;border-radius:99px;transition:width .8s cubic-bezier(.2,.8,.2,1)}
.md small{font:600 11px 'IBM Plex Mono',monospace;color:var(--mt)}
.det{margin-top:12px;padding:14px;border-radius:20px;background:var(--tx);color:var(--bg);display:flex;gap:12px;align-items:center;animation:fadeUp .35s cubic-bezier(.3,1.6,.5,1) both}
.det>span{width:52px;height:52px;border-radius:50%;background:var(--bg);display:flex;align-items:center;justify-content:center;font-size:28px;flex:none}
.det b{display:block;font-size:16px}
.det small{display:block;font-size:13px;opacity:.8;margin-top:2px}
.det em{display:block;font-style:normal;font-size:13px;font-weight:700;color:var(--vio);margin-top:4px}

/* ---------- settings ---------- */
.ttl{margin:20px 4px 8px;font-size:13px;font-weight:700;color:var(--mt)}
.grp{border-radius:20px;background:var(--s1);border:1px solid var(--ln);overflow:hidden}
.it{display:flex;align-items:center;gap:12px;min-height:62px;padding:8px 14px;border-bottom:1px solid var(--ln);width:100%;background:none;border-left:0;border-right:0;border-top:0;text-align:right}
.it:last-child{border-bottom:0}
.it .ie{width:36px;height:36px;border-radius:11px;display:flex;align-items:center;justify-content:center;font-size:19px;flex:none;background:var(--s2)}
.it .tx{flex:1;min-width:0}
.it .tx b{display:block;font-size:15px;font-weight:600}
.it .tx small{display:block;font-size:12px;color:var(--mt)}
.it.dng{color:var(--red)}
.sw{position:relative;width:52px;height:32px;border-radius:99px;border:0;background:var(--ln2);flex:none;transition:background .25s}
.sw i{position:absolute;top:3px;right:3px;width:26px;height:26px;border-radius:50%;background:#fff;box-shadow:0 2px 4px rgba(0,0,0,.3);transition:transform .3s cubic-bezier(.3,1.5,.5,1)}
.sw.on{background:var(--lime)}
.sw.on i{transform:translateX(-20px)}
.pls{display:flex;gap:8px}
.pll{flex:1;height:42px;border-radius:12px;border:2px solid var(--ln2);background:var(--s3);color:var(--mt);font-weight:700;font-size:14px;transition:all .2s cubic-bezier(.3,1.5,.5,1)}
.pll.on{border-color:var(--lime);background:var(--lime-bg);color:var(--lime-tx);transform:translateY(-2px);box-shadow:0 3px 0 var(--lime-d)}
.foot{margin:20px 0 0;text-align:center;font-size:12px;color:var(--dim)}

/* ---------- certificate ---------- */
.cw{margin-top:16px;border-radius:18px;overflow:hidden;border:1px solid var(--ln);background:var(--s1);min-height:180px;display:flex;align-items:center;justify-content:center}
.cw img{width:100%;display:block}

/* ---------- toast & confetti ---------- */
.toast{position:fixed;top:calc(14px + env(safe-area-inset-top));left:50%;transform:translateX(-50%);z-index:60;padding:12px 18px;border-radius:16px;background:var(--tx);color:var(--bg);font-weight:700;font-size:15px;box-shadow:0 12px 30px rgba(0,0,0,.35);animation:toastIn .45s cubic-bezier(.3,1.6,.5,1) both;white-space:nowrap}
.toast.out{animation:toastOut .3s ease-in both}
.cf{position:fixed;top:-20px;left:var(--l);width:var(--w,10px);height:16px;border-radius:3px;background:var(--c);z-index:70;pointer-events:none;animation:fall var(--d,1.8s) cubic-bezier(.2,.6,.4,1) both}
.shk{animation:shake .45s cubic-bezier(.36,.07,.19,.97)}

/* ---------- keyframes ---------- */
@keyframes fadeUp{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:none}}
@keyframes floaty{0%,100%{transform:translateY(0) rotate(var(--r,0deg))}50%{transform:translateY(-10px) rotate(var(--r,0deg))}}
@keyframes twinkle{0%,100%{opacity:.25;transform:scale(.8)}50%{opacity:1;transform:scale(1.15)}}
@keyframes spin{to{transform:rotate(360deg)}}
@keyframes pop{0%{transform:scale(.85)}60%{transform:scale(1.08)}100%{transform:scale(1)}}
@keyframes shake{10%,90%{transform:translateX(-2px)}20%,80%{transform:translateX(5px)}30%,50%,70%{transform:translateX(-9px)}40%,60%{transform:translateX(9px)}}
@keyframes rise{0%{opacity:0;transform:translateY(10px) scale(.6)}25%{opacity:1;transform:translateY(-6px) scale(1.15)}100%{opacity:0;transform:translateY(-48px)}}
@keyframes fall{0%{opacity:1;transform:translate(0,0) rotate(0)}100%{opacity:0;transform:translate(var(--x,0),100vh) rotate(720deg)}}
@keyframes land{0%{opacity:0;transform:translateY(-60px) scale(.4) rotate(-18deg)}100%{opacity:1;transform:none}}
@keyframes starIn{0%{opacity:0;transform:scale(0) rotate(-90deg)}100%{opacity:1;transform:none}}
@keyframes wiggle{0%,60%,100%{transform:rotate(0)}70%{transform:rotate(-12deg)}80%{transform:rotate(10deg)}90%{transform:rotate(-6deg)}}
@keyframes riseUp{from{opacity:0;transform:translateY(40px)}to{opacity:1;transform:none}}
@keyframes grow{from{width:0}}
@keyframes toastIn{from{opacity:0;transform:translateX(-50%) translateY(-20px) scale(.9)}to{opacity:1;transform:translateX(-50%)}}
@keyframes toastOut{to{opacity:0;transform:translateX(-50%) translateY(-20px)}}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}

/* ---------- google sign-in, profile, social ---------- */
.gbtn{display:flex;align-items:center;justify-content:center;gap:12px;width:100%;min-height:58px;border-radius:18px;border:2px solid #DADCE0;background:#fff;color:#1F1F1F;font-weight:700;font-size:17px;box-shadow:0 6px 0 #C9CEE6;transition:transform .12s,box-shadow .12s}
.gbtn:active{transform:translateY(5px);box-shadow:0 1px 0 #C9CEE6}
.gbtn[disabled]{opacity:.65}
.gbtn svg{flex:none}
.gacc{display:flex;align-items:center;gap:12px;padding:12px;border-radius:16px;background:var(--s1);border:1px solid var(--ln)}
.gacc img,.gacc>span{width:44px;height:44px;border-radius:50%;object-fit:cover;flex:none;display:flex;align-items:center;justify-content:center;background:var(--s2);font-size:22px}
.gacc div{min-width:0}
.gacc b{display:block;font-size:15px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.gacc small{display:block;font-size:12px;color:var(--mt);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;text-align:right}
.soc{display:flex;align-items:center;justify-content:center;gap:10px;margin-top:6px;font-size:13px;color:var(--mt);font-weight:600}
.soc a{width:42px;height:42px;border-radius:12px;display:flex;align-items:center;justify-content:center;overflow:hidden;box-shadow:0 2px 8px rgba(0,0,0,.25);transition:transform .15s}
.soc a:active{transform:scale(.9)}
.soc svg{width:24px;height:24px}
.soc .so-tg svg{width:42px;height:42px}
.so-wa{background:#25D366}.so-tk{background:#000}.so-ig{background:radial-gradient(circle at 30% 107%,#FDF497 0%,#FDF497 5%,#FD5949 45%,#D6249F 60%,#285AEB 90%)}.so-tg{background:#fff;border-radius:50%!important}
[data-theme=dark] .so-tk{box-shadow:inset 0 0 0 1px #333,0 2px 8px rgba(0,0,0,.25)}
.scr>.soc{margin-top:22px}
.avs{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:8px;margin-top:8px}
.avb{aspect-ratio:1;border-radius:14px;border:2px solid var(--ln2);background:var(--s3);font-size:24px;display:flex;align-items:center;justify-content:center;transition:transform .2s cubic-bezier(.3,1.6,.5,1),border-color .2s}
.avb.on{border-color:var(--lime);background:var(--lime-bg);transform:scale(1.08)}

/* phone: fixed 05 + 8 digits */
.phone{display:flex;align-items:center;gap:12px;height:56px;padding:0 16px;border-radius:16px;border:2px solid var(--ln2);background:var(--s1);transition:border-color .2s,box-shadow .2s}
.phone:focus-within{border-color:var(--lime);box-shadow:0 0 0 4px color-mix(in srgb,var(--lime) 18%,transparent)}
.phone .pre{font:600 19px 'IBM Plex Mono',monospace;color:var(--tx);padding-right:12px;border-right:2px solid var(--ln2)}
.phone input{flex:1;min-width:0;height:100%;border:0;outline:0;background:transparent;color:var(--tx);font:600 19px 'IBM Plex Mono',monospace;letter-spacing:3px;text-align:left}
.phone input::placeholder{color:var(--dim);opacity:.55;letter-spacing:3px}

/* ---------- AI assistant ---------- */
.fab{position:fixed;z-index:28;bottom:calc(86px + env(safe-area-inset-bottom));left:max(16px,calc(50% - 224px));display:flex;align-items:center;gap:8px;height:56px;padding:0 18px 0 14px;border:0;border-radius:99px;background:linear-gradient(135deg,#9B8BFF,#6A55F0);color:#fff;font-weight:700;font-size:15px;box-shadow:0 6px 0 var(--vio-d),0 10px 30px rgba(109,85,240,.45);transition:transform .15s,box-shadow .15s;animation:fabIn .6s .3s cubic-bezier(.3,1.6,.5,1) both}
.fab svg{animation:twinkle 2.4s ease-in-out infinite}
.fab:active{transform:translateY(5px);box-shadow:0 1px 0 var(--vio-d)}
@keyframes fabIn{from{opacity:0;transform:scale(.4) translateY(20px)}to{opacity:1;transform:none}}
.aih{position:sticky;top:0;z-index:20;margin:0 -16px;padding:calc(10px + env(safe-area-inset-top)) 10px 10px;display:flex;align-items:center;gap:10px;background:var(--bg);border-bottom:1px solid var(--ln)}
.aih b{display:block;font-size:16px}
.aih small{display:block;font-size:12px;color:var(--mt)}
.aiav,.aib{display:flex;align-items:center;justify-content:center;color:#fff;background:linear-gradient(135deg,#9B8BFF,#6A55F0);flex:none}
.aiav{width:42px;height:42px;border-radius:14px;box-shadow:0 3px 0 var(--vio-d)}
.aiav svg{width:22px;height:22px}
.msgs{display:flex;flex-direction:column;gap:12px;padding-top:16px}
.aiw{text-align:center;padding:18px 8px 6px;animation:fadeUp .5s cubic-bezier(.2,.8,.2,1) both}
.aib{width:76px;height:76px;margin:0 auto;border-radius:26px;box-shadow:0 6px 0 var(--vio-d),0 0 40px rgba(141,123,255,.35)}
.aib svg{width:40px;height:40px;animation:twinkle 2.4s ease-in-out infinite}
.aiw h2{margin-top:14px;font-size:22px}
.aiw p{margin:8px auto 0;max-width:340px;font-size:14px;line-height:1.75;color:var(--mt)}
.aic{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin-top:16px}
.chp{display:flex;align-items:center;gap:8px;min-height:52px;padding:8px 12px;border-radius:16px;border:1px solid var(--ln);background:var(--s1);color:var(--tx);font-weight:600;font-size:13px;text-align:right;line-height:1.4;transition:transform .15s,border-color .2s;animation:fadeUp .5s cubic-bezier(.2,.8,.2,1) both}
.chp span{font-size:18px}
.chp:hover{border-color:var(--vio)}
.chp:active{transform:scale(.96)}
.mg{display:flex;gap:8px;align-items:flex-end;animation:fadeUp .35s cubic-bezier(.2,.8,.2,1) both}
.mg.u{justify-content:flex-start}
.mg.a{justify-content:flex-end;flex-direction:row-reverse}
.mg .bb{max-width:82%;padding:11px 14px;border-radius:20px;font-size:15px;line-height:1.7;word-wrap:break-word;overflow-wrap:anywhere}
.mg.u .bb{background:var(--lime);color:var(--on-lime);border-bottom-right-radius:6px;font-weight:500}
.mg.a .bb{position:relative;background:var(--s1);border:1px solid var(--ln);border-bottom-left-radius:6px}
.mg.err .bb{border-color:color-mix(in srgb,var(--ora) 50%,transparent);color:var(--mt)}
.mg .bot{width:30px;height:30px;border-radius:10px;flex:none;display:flex;align-items:center;justify-content:center;color:#fff;background:linear-gradient(135deg,#9B8BFF,#6A55F0)}
.mg .bot svg{width:16px;height:16px}
.bb p{margin:0 0 6px}.bb p:last-child{margin:0}
.bb ul{margin:4px 0 6px;padding-inline-start:20px}
.bb li{margin:3px 0}
.bb b{color:var(--vio-tx)}
[data-theme=dark] .bb b{color:#C9BFFF}
.mg.u .bb b{color:inherit}
.say{margin-top:6px;display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:10px;border:0;background:var(--sky-bg);color:var(--sky-d)}
[data-theme=dark] .say{color:var(--sky)}
.tdots{display:inline-flex;gap:5px;padding:4px 2px}
.tdots i{width:8px;height:8px;border-radius:50%;background:var(--vio);animation:dot 1.2s ease-in-out infinite}
.tdots i:nth-child(2){animation-delay:.15s}.tdots i:nth-child(3){animation-delay:.3s}
@keyframes dot{0%,80%,100%{transform:translateY(0);opacity:.4}40%{transform:translateY(-6px);opacity:1}}
.cmp{position:fixed;left:50%;transform:translateX(-50%);bottom:0;width:100%;max-width:480px;z-index:30;display:flex;align-items:flex-end;gap:10px;padding:10px 14px calc(12px + env(safe-area-inset-bottom));background:var(--bg);border-top:1px solid var(--ln)}
.cmp textarea{flex:1;min-height:48px;max-height:120px;resize:none;padding:12px 16px;border-radius:24px;border:2px solid var(--ln2);background:var(--s1);color:var(--tx);font:500 16px 'IBM Plex Sans Arabic',sans-serif;line-height:1.5;outline:none;transition:border-color .2s}
.cmp textarea:focus{border-color:var(--vio)}
.cmp textarea::placeholder{color:var(--dim)}
.snd{width:48px;height:48px;border-radius:50%;border:0;flex:none;display:flex;align-items:center;justify-content:center;background:var(--vio);color:#fff;box-shadow:0 4px 0 var(--vio-d);transition:transform .12s,box-shadow .12s,opacity .2s}
.snd:active{transform:translateY(3px);box-shadow:0 1px 0 var(--vio-d)}
.snd[disabled]{opacity:.5}

/* ---------- grammar ---------- */
.nav button{flex:1;min-width:0}
.nav .ic{width:46px}
.gprog{display:flex;align-items:center;gap:10px;margin-top:14px}
.gprog>div{flex:1;height:10px;border-radius:99px;background:var(--s2);overflow:hidden}
.gprog i{display:block;height:100%;border-radius:99px;background:var(--lime);transition:width 1s cubic-bezier(.2,.8,.2,1)}
.gprog span{font-size:13px;color:var(--mt)}
.glist{display:flex;flex-direction:column;gap:10px;margin-top:16px}
.gu{display:flex;align-items:center;gap:12px;width:100%;padding:12px;border-radius:20px;border:1px solid var(--ln);background:var(--s1);color:var(--tx);text-align:right;transition:transform .15s,border-color .2s;animation:fadeUp .5s cubic-bezier(.2,.8,.2,1) both}
.gu:active{transform:scale(.98)}
.gu.ok{border-color:color-mix(in srgb,#22C55E 55%,transparent)}
.gn{width:46px;height:46px;border-radius:15px;flex:none;display:flex;align-items:center;justify-content:center;color:#0F1220;font:700 20px 'IBM Plex Mono',monospace;box-shadow:inset 0 -3px 0 rgba(0,0,0,.18)}
.gn.big{width:62px;height:62px;border-radius:20px;font-size:26px}
.gu .t{flex:1;min-width:0}
.gu .t small{display:block;font-size:12px;color:var(--mt);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.gu .t b{display:block;font-size:15px;line-height:1.45;margin-top:2px}
.gs{font-size:12px;font-weight:700;color:var(--vio-tx);white-space:nowrap}
.gu.ok .gs{color:#22C55E}
.ghead{display:flex;align-items:center;gap:14px;margin-top:4px}
.ghead small{display:block;font-size:12px;color:var(--mt)}
.ghead h1{font-size:21px;line-height:1.4}
.grc{margin-top:18px;padding:16px;border-radius:24px;background:var(--s1);border:1px solid var(--ln);animation:fadeUp .5s cubic-bezier(.2,.8,.2,1) both}
.grh{display:flex;align-items:center;gap:10px}
.gk{width:32px;height:32px;border-radius:10px;flex:none;display:flex;align-items:center;justify-content:center;color:#0F1220;font:700 15px 'IBM Plex Mono',monospace}
.grh b{display:block;font-size:17px}
.grh small{display:block;font-size:12px;color:var(--mt);text-align:right}
.gi{margin:12px 0 0;font-size:15px;line-height:1.8}
.gi b,.gbox b{color:var(--vio-tx)}
[data-theme=dark] .gi b,[data-theme=dark] .gbox b{color:#C9BFFF}
.gbox{margin-top:12px;padding:12px 14px;border-radius:16px}
.gbox .glb{display:block;font-size:12px;font-weight:700;color:var(--mt);margin-bottom:6px}
.gf{background:var(--vio-bg);border:1px dashed color-mix(in srgb,var(--vio) 55%,transparent)}
.gf div{font-size:14px;line-height:1.7;padding:3px 0}
.gx{background:var(--s3);border:1px solid var(--ln)}
[data-theme=dark] .gx{background:#14182A}
.gxe{display:flex;align-items:flex-start;gap:6px;padding:7px 0;border-bottom:1px solid var(--ln)}
.gxe:last-child{border-bottom:0}
.gxe .ib{width:36px;height:36px;color:var(--sky)}
.gxe p{margin:0;font-size:15.5px;line-height:1.6;text-align:left}
.gxe p b{color:var(--lime-tx);background:color-mix(in srgb,var(--lime) 14%,transparent);border-radius:5px;padding:0 3px}
[data-theme=dark] .gxe p b{color:var(--lime)}
.gxe p i{color:var(--mt)}
.gxe small{display:block;margin-top:2px;font-size:13px;color:var(--mt);line-height:1.6}
.gbox.gt{background:var(--ora-bg);border:1px solid color-mix(in srgb,var(--ora) 40%,transparent)}
.gbox.gt p{margin:4px 0;font-size:14px;line-height:1.7}
.gwords{display:flex;flex-wrap:wrap;gap:6px;margin-top:12px}
.gwords span{padding:5px 10px;border-radius:10px;background:var(--s2);font:500 13px 'IBM Plex Sans',sans-serif}
.gqq{line-height:1.6;font-size:21px}
.gopts{display:flex;flex-direction:column;gap:10px;margin-top:20px}
.gopts .opt{flex-direction:row;justify-content:flex-start;gap:12px;min-height:58px;padding:12px 16px;font-size:16px;text-align:start}
.gopts .opt b{flex:none}

/* ---------- MegaGoal 2 book content: grammar tabs, reading, listening gate, certificate requirements ---------- */
.gchs{display:flex;gap:6px;margin-top:6px}
.gch{display:inline-flex;align-items:center;gap:4px;padding:2px 8px;border-radius:999px;font-size:11.5px;font-weight:700;background:var(--s2);color:var(--mt)}
.gch.ok{background:var(--lime-bg);color:var(--lime-tx)}
.gch.try{background:var(--gold-bg);color:var(--gold)}
.gtabs{margin-top:16px}
.gtabs button{font-size:13px;height:auto;min-height:40px;padding:6px 8px;line-height:1.3}
.rlist{display:flex;flex-direction:column;gap:12px;margin-top:16px}
.rc{display:flex;align-items:center;gap:14px;width:100%;padding:10px;border-radius:22px;border:1px solid var(--ln);background:var(--s1);color:var(--tx);text-align:right;transition:transform .15s,border-color .2s;animation:fadeUp .5s cubic-bezier(.2,.8,.2,1) both}
.rc:active{transform:scale(.98)}
.rc.ok{border-color:color-mix(in srgb,var(--lime) 45%,var(--ln))}
.rc.lk{opacity:.55}.rc.lk .rart{filter:grayscale(1)}
.rc .t{flex:1;min-width:0}
.rc .t small{display:block;font-size:12px;color:var(--mt);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.rc .t b{display:block;font-size:17px;direction:ltr;text-align:right;margin-top:2px}
.rmeta{display:block;font-size:11.5px;color:var(--mt);margin-top:3px}
.rc .st{font-size:12px;font-weight:700;white-space:nowrap}
/* scene art: the text's picture, built from its emoji on a color wash */
.rart{position:relative;flex:none;width:78px;height:78px;border-radius:20px;overflow:hidden;background:linear-gradient(140deg,color-mix(in srgb,var(--c) 85%,#fff 0%),color-mix(in srgb,var(--c) 45%,#0F1220))}
.rart .b1,.rart .b2{position:absolute;border-radius:50%;background:rgba(255,255,255,.22)}
.rart .b1{width:70%;height:70%;right:-18%;top:-22%}.rart .b2{width:46%;height:46%;left:-12%;bottom:-14%;background:rgba(15,18,32,.18)}
.rart i{position:absolute;font-style:normal;line-height:1;filter:drop-shadow(0 4px 6px rgba(0,0,0,.25))}
.rart .e0{font-size:38px;left:50%;top:50%;transform:translate(-50%,-52%)}
.rart .e1{font-size:20px;right:8%;top:8%}
.rart .e2{font-size:20px;left:8%;bottom:8%}
.rart.big{width:100%;height:190px;border-radius:26px;margin-top:6px}
.rart.big .e0{font-size:92px}.rart.big .e1{font-size:46px;right:12%;top:14%}.rart.big .e2{font-size:46px;left:12%;bottom:14%}
.rhead{margin-top:14px}
.rhead small{display:block;font-size:13px;color:var(--mt)}
.rhead h1{font-size:25px;text-align:right;margin-top:2px}
.rsay{border:0;cursor:pointer;background:var(--vio-bg);color:var(--vio-tx)}
.rtext{font-size:18.5px;line-height:1.9;color:var(--tx)}
.rpeek{margin-top:12px;border-radius:16px;background:var(--s1);border:1px solid var(--ln);overflow:hidden}
.rpeek summary{cursor:pointer;padding:10px 14px;font-size:14px;font-weight:700;color:var(--vio-tx);list-style:none}
.rpeek summary::-webkit-details-marker{display:none}
.rpeek div{padding:0 14px 14px;font-size:15px;line-height:1.75;direction:ltr;text-align:left;color:var(--mt);max-height:34vh;overflow:auto}
.gopts.tf{flex-direction:row}
.gopts.tf .opt{flex:1;flex-direction:column;justify-content:center;align-items:center;min-height:96px;font-size:18px;text-align:center}
.gopts.tf .opt b{font-size:22px;color:var(--tx)}
.gopts.tf .opt small{display:block;font-size:13px;color:var(--mt);font-weight:600}
.lprog{margin-top:12px;display:flex;align-items:center;gap:10px}
.lprog small{font-size:13px;color:var(--mt);white-space:nowrap}
.lpb{flex:1;height:8px;border-radius:9px;background:var(--s2);overflow:hidden}
.lpb i{display:block;height:100%;border-radius:9px;background:linear-gradient(90deg,var(--vio),var(--lime));transition:width .4s}
.sen.hd{color:var(--tx)}
.creq{margin-top:10px;display:flex;flex-direction:column;gap:12px}
.crh{display:flex;align-items:center;gap:16px;padding:16px;border-radius:22px;background:var(--s1);border:1px solid var(--ln)}
.crh p{font-size:14.5px;line-height:1.7;color:var(--mt)}
.crh p b{color:var(--tx)}
.crring{flex:none;width:86px;height:86px;border-radius:50%;display:grid;place-items:center;background:conic-gradient(var(--lime) calc(var(--p)*1%),var(--s2) 0)}
.crring b{width:68px;height:68px;border-radius:50%;display:grid;place-items:center;background:var(--s1);font-size:18px}
.crs{display:flex;align-items:center;gap:14px;padding:14px;border-radius:20px;background:var(--s1);border:1px solid var(--ln)}
.crs.ok{border-color:color-mix(in srgb,var(--lime) 45%,var(--ln))}
.crs .e{font-size:30px;flex:none}
.crs .t{flex:1;min-width:0}
.crs .t>b{display:block;font-size:16px}
.crs small{display:block;font-size:12.5px;color:var(--mt);margin-top:2px}
.crs .pb{margin-top:8px;height:8px;border-radius:9px;background:var(--s2);overflow:hidden}
.crs .pb i{display:block;height:100%;border-radius:9px;background:var(--vio)}
.crs.ok .pb i{background:var(--lime)}

/* ---------- teacher mode and teacher posts ---------- */
.node.tch{background:linear-gradient(180deg,#9B8BFF,#6A55F0);color:#fff;box-shadow:0 7px 0 var(--vio-d),inset 0 -3px 0 rgba(0,0,0,.12)}
.tlink{display:inline-flex;align-items:center;min-height:40px;padding:0 12px;border-radius:12px;background:var(--vio-bg);color:var(--vio-tx);font-size:13px;font-weight:700;text-decoration:none;white-space:nowrap}
.tcard{display:flex;align-items:center;gap:12px;margin-top:14px;padding:12px 14px;border-radius:20px;background:linear-gradient(135deg,#9B8BFF,#6A55F0);color:#fff;text-decoration:none;box-shadow:0 6px 0 var(--vio-d)}
.tcard .ti{font-size:28px;flex:none}
.tcard .tt{flex:1;min-width:0}
.tcard b{display:block;font-size:16px}
.tcard small{display:block;font-size:12px;opacity:.9}
.tcard .ta{font-size:24px;font-weight:700;flex:none}
.fd{display:flex;align-items:flex-start;gap:10px;width:100%;margin-top:10px;padding:12px;border-radius:18px;border:1px solid var(--ln);background:var(--s1);color:var(--tx);text-align:right}
.fd.ann{border-color:color-mix(in srgb,var(--gold) 55%,var(--ln));background:var(--gold-bg)}
.fd.hw{border-color:color-mix(in srgb,var(--vio) 50%,var(--ln))}
.fd.hw.dn{border-color:color-mix(in srgb,var(--lime) 45%,var(--ln))}
.fd .fi{font-size:22px;line-height:1.2;flex:none}
.fd .ft{display:block;flex:1;min-width:0;overflow-wrap:anywhere}
.fd b{display:block;font-size:15px;line-height:1.4}
.fd p,.fd small{display:block;margin:3px 0 0;font-size:13px;line-height:1.6;color:var(--mt);font-weight:500;white-space:pre-line}
.fd .due{color:var(--vio-tx);font-weight:700}
.fd.dn .due{color:var(--lime-tx)}
.fx{flex:none;width:32px;height:32px;margin:-4px -4px 0 0;border:0;border-radius:10px;background:none;color:var(--mt);font-size:14px}

/* ---------- illustrations for reading and listening texts ---------- */
.aimg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:block;border-radius:inherit}
.rc .rart,.sc .cv.im{width:104px;height:78px}
.sc .cv{position:relative;overflow:hidden}
.rart.big{height:auto;aspect-ratio:16/9;max-height:340px;box-shadow:0 6px 0 var(--card-sh)}

/* ---------- responsive: phone stays the base design; tablet widens it; desktop gets a side menu ---------- */
:root{--rail:0px;--col:480px}
.hgrid,.hside{display:contents}
.nbrand{display:none}
.chips{flex:none}
.brand span{min-width:0}
.pl.rsay{min-height:36px;padding:6px 12px}
:focus-visible{outline:2px solid var(--sky);outline-offset:2px}
input:focus-visible,textarea:focus-visible{outline:0}

@media (max-width:380px){
  .top{gap:6px}
  .chips{gap:4px}
  .chip{height:34px;padding:0 7px;gap:3px;font-size:13px}
  .brand small{display:none}
}
@media (max-width:340px){
  .pd{width:88px}
  .pd .nm{max-width:88px}
  .nl{max-width:116px}
  .brand b{font-size:13px}
}
/* phone turned sideways: keep the card and the answers on screen */
@media (max-height:480px) and (orientation:landscape){
  .fc{height:170px}
  .opt{min-height:64px}
  .nav button{min-height:44px}
  .nav .ic{height:26px}
  .hero{height:170px}
}

@media (min-width:600px){
  :root{--col:640px}
  #app{max-width:var(--col)}
  .nav,.lfoot,.fb,.player,.cmp{max-width:var(--col)}
  .pop{max-width:calc(var(--col) - 28px)}
  .fab{left:max(16px,calc(50% - var(--col)/2 + 16px))}
  .unit>div:first-child{flex:1;min-width:0}
  .unit .pb{width:100%}
}

@media (hover:hover){
  .sc:hover,.rc:hover,.gu:hover,.chp:hover{border-color:var(--vio)}
  .opt:not(.ok):not(.no):not(.dim):hover{border-color:var(--sky)}
  .node:not(.lock):hover{filter:brightness(1.06)}
}

@media (min-width:1000px){
  :root{--col:680px}
  #app{max-width:none}
  #app.wn{--rail:248px;padding-right:var(--rail)}
  .scr{max-width:var(--col);margin:0 auto;padding-inline:32px}
  #app.wn .scr{max-width:760px;padding-bottom:64px}
  #app.wn .scr:has(.stl),#app.wn .scr:has(.rlist),#app.wn .scr:has(.glist),#app.wn .scr:has(.mgrid){max-width:980px}
  #app.wn .scr:has(.hgrid){max-width:1080px}

  /* side menu */
  .nav{top:0;bottom:0;right:0;left:auto;transform:none;width:var(--rail);max-width:none;flex-direction:column;justify-content:flex-start;align-items:stretch;gap:6px;padding:20px 14px;border-top:0;border-left:1px solid var(--ln)}
  .nav button{flex:none;flex-direction:row;justify-content:flex-start;gap:10px;min-height:50px;padding:0 8px;border-radius:14px;font-size:15px}
  .nav button:hover{background:var(--s1);color:var(--tx)}
  .nav button.on{background:color-mix(in srgb,var(--lime) 10%,transparent)}
  .nav button.on .ic{background:none;transform:none}
  .nav .ic{width:36px}
  .nbrand{display:flex;align-items:center;gap:10px;padding:0 8px 18px;margin-bottom:8px;border-bottom:1px solid var(--ln)}
  .nbrand img{width:42px;height:42px;border-radius:12px;object-fit:cover;flex:none}
  .nbrand span{min-width:0}
  .nbrand b{display:block;font-size:16px;line-height:1.25}
  .nbrand small{display:block;font-size:12px;color:var(--mt)}

  /* bars stay centred over the content */
  .lfoot,.fb,.cmp,.player,.pop{left:calc(50% - var(--rail)/2)}
  .lfoot,.fb,.cmp{max-width:var(--col)}
  .lfoot{padding-inline:32px}
  .fb{border-radius:28px 28px 0 0}
  .player{bottom:24px;width:calc(100% - var(--rail) - 64px);max-width:696px;border:1px solid var(--ln);border-radius:20px;box-shadow:0 14px 34px rgba(0,0,0,.35)}
  .pop{bottom:128px;max-width:452px}
  .fab{left:32px;bottom:32px}

  /* the same bars are full width inside their column */
  .top,.aih{margin-inline:-32px;padding-inline:32px}
  .top{justify-content:flex-end}
  .top .brand{display:none}

  /* home: progress beside the path */
  .hgrid{display:grid;grid-template-columns:minmax(290px,350px) minmax(0,1fr);gap:40px;align-items:start}
  .hside{display:block;position:sticky;top:76px}

  /* lists use the width */
  .stl,.rlist,.glist{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));align-items:stretch}
  .stg{grid-column:1/-1}
  .sgrid{grid-template-columns:repeat(4,minmax(0,1fr))}
  .cups{display:grid;grid-template-columns:repeat(auto-fill,minmax(104px,1fr));overflow:visible;margin:10px 0 0;padding:0}
  .cup{width:auto}
  .mgrid{grid-template-columns:repeat(auto-fill,minmax(150px,1fr))}
  .aic{grid-template-columns:repeat(3,minmax(0,1fr))}
  .fc{height:300px}
  .login{max-width:480px;margin:0 auto}
}
@media (min-width:1000px) and (max-width:1120px){
  .hgrid{grid-template-columns:270px minmax(0,1fr);gap:20px}
}