@import url('https://fonts.googleapis.com/css2?family=Fredoka:wght@400;500;600;700&family=Rubik:wght@400;500;700;900&display=swap');
:root{--bg:#07050f;--card:#110e2e;--card2:#1c1850;--card3:#251f60;--a1:#ff4757;--a2:#ffd32a;--a3:#2ed573;--a4:#1e90ff;--a5:#9b59b6;--a6:#ff6348;--txt:#fff;--txt2:#a89fd4;--r:16px;--sh:0 8px 40px rgba(0,0,0,.55);--streak:#ff9f43;--theme-accent:#1e90ff;--theme-accent2:#9b59b6;--theme-glow:rgba(30,144,255,.35);--theme-bg1:#001a60;--theme-bg2:#1a0060;}
/* ── Boy theme (blue) ── */
body.theme-boy{--a4:#1e90ff;--a5:#00b4d8;--theme-accent:#1e90ff;--theme-accent2:#00b4d8;--theme-glow:rgba(30,144,255,.4);--card:#0a0e2e;--card2:#101840;--card3:#1a2458;--theme-bg1:#001a60;--theme-bg2:#000d40;}
body.theme-boy #bg{background:radial-gradient(ellipse at 15% 40%,#001a60 0%,transparent 55%),radial-gradient(ellipse at 85% 15%,#00294d 0%,transparent 50%),radial-gradient(ellipse at 50% 90%,#001040 0%,transparent 60%);}
body.theme-boy .ans-inp{border-color:#1e90ff;}body.theme-boy .ans-inp:focus{border-color:#00b4d8;box-shadow:0 0 24px rgba(30,144,255,.4);}
body.theme-boy .xp-inner{background:linear-gradient(90deg,#1e90ff,#00b4d8);}
body.theme-boy .gender-btn.selected{border-color:#1e90ff;background:rgba(30,144,255,.22);box-shadow:0 0 22px rgba(30,144,255,.45),inset 0 0 12px rgba(30,144,255,.08);transform:scale(1.05);}
body.theme-boy .gender-btn.selected .gender-label{color:#1e90ff;}
body.theme-boy .logo{background:linear-gradient(135deg,#fff 0%,var(--a2) 35%,#1e90ff 65%,#00b4d8 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;}
/* ── Girl theme (pink) ── */
body.theme-girl{--a4:#ff6eb4;--a5:#c678dd;--a3:#ff9ed2;--theme-accent:#ff6eb4;--theme-accent2:#c678dd;--theme-glow:rgba(255,110,180,.4);--card:#1a0a1e;--card2:#261230;--card3:#301840;--theme-bg1:#3d0040;--theme-bg2:#1a0030;}
body.theme-girl #bg{background:radial-gradient(ellipse at 15% 40%,#3d0050 0%,transparent 55%),radial-gradient(ellipse at 85% 15%,#280040 0%,transparent 50%),radial-gradient(ellipse at 50% 90%,#1a0038 0%,transparent 60%);}
body.theme-girl .ans-inp{border-color:#ff6eb4;}body.theme-girl .ans-inp:focus{border-color:#c678dd;box-shadow:0 0 24px rgba(255,110,180,.4);}
body.theme-girl .xp-inner{background:linear-gradient(90deg,#ff6eb4,#c678dd);}
body.theme-girl .gender-btn.selected{border-color:#ff6eb4;background:rgba(255,110,180,.22);box-shadow:0 0 22px rgba(255,110,180,.45),inset 0 0 12px rgba(255,110,180,.08);transform:scale(1.05);}
body.theme-girl .gender-btn.selected .gender-label{color:#ff6eb4;}
body.theme-girl .logo{background:linear-gradient(135deg,#fff 0%,#ffd32a 30%,#ff6eb4 60%,#c678dd 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;}
body.theme-girl .de{border-color:#ff9ed2;color:#ff9ed2;}body.theme-girl .de:hover{background:rgba(255,158,210,.1);}
body.theme-girl .cbt.add{border-color:#ff6eb430;}body.theme-girl .cbt.sub{border-color:#c678dd30;}body.theme-girl .cbt.mul{border-color:#ffd32a30;}
body.theme-girl .daily-banner{border-color:#ff6eb4;}
body.theme-girl .streak-badge{color:#ff6eb4;border-color:#ff6eb4;background:rgba(255,110,180,.15);}
body.theme-girl .streak-live{color:#ff6eb4;border-color:#ff6eb4;background:rgba(255,110,180,.15);}
*{margin:0;padding:0;box-sizing:border-box;}
html,body{min-height:100vh;font-family:'Rubik',sans-serif;background:var(--bg);color:var(--txt);direction:rtl;overflow-x:hidden;transition:background .4s,color .4s;}
#bg{position:fixed;inset:0;pointer-events:none;z-index:0;background:radial-gradient(ellipse at 15% 40%,#1a0060 0%,transparent 55%),radial-gradient(ellipse at 85% 15%,#001a60 0%,transparent 50%),radial-gradient(ellipse at 50% 90%,#300040 0%,transparent 60%);}
.star{position:absolute;border-radius:50%;background:#fff;animation:twink var(--d,3s) infinite;}
@keyframes twink{0%,100%{opacity:.15;}50%{opacity:1;}}
.scr{display:none;position:relative;z-index:1;min-height:100vh;padding:24px 20px 40px;flex-direction:column;align-items:center;gap:0;}
.scr.on{display:flex;}
.sec-label{width:100%;max-width:420px;font-size:.72rem;font-weight:700;letter-spacing:2px;color:var(--txt2);text-transform:uppercase;margin:18px 0 8px;opacity:.6;}
.logo{font-family:'Fredoka',sans-serif;font-weight:700;font-size:3.4rem;letter-spacing:2px;background:linear-gradient(135deg,#fff 0%,var(--a2) 40%,var(--a4) 70%,var(--a5) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;text-shadow:none;animation:float 3s ease-in-out infinite;}
.logo-sub{font-size:.85rem;color:var(--txt2);letter-spacing:4px;text-transform:uppercase;margin-top:-8px;margin-bottom:6px;font-weight:500;}
@keyframes float{0%,100%{transform:translateY(0);}50%{transform:translateY(-10px);}}
.grade-chip{display:inline-flex;align-items:center;gap:5px;padding:4px 12px;border-radius:99px;font-size:.82rem;font-weight:700;border:1.5px solid;margin-top:4px;}
/* ── Grade Grid (redesigned) ── */
.grade-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;width:100%;max-width:460px;margin:20px 0;}
@media(min-width:520px){.grade-grid{grid-template-columns:repeat(3,1fr);}}
.grade-btn{position:relative;background:linear-gradient(145deg,var(--card),var(--card2));border:2px solid rgba(255,255,255,.1);border-radius:20px;padding:22px 12px 16px;cursor:pointer;transition:all .25s cubic-bezier(.34,1.4,.64,1);text-align:center;font-family:'Fredoka',sans-serif;overflow:hidden;}
.grade-btn::before{content:'';position:absolute;inset:0;border-radius:20px;opacity:0;transition:opacity .25s;pointer-events:none;}
.grade-btn:hover{transform:translateY(-6px) scale(1.04);box-shadow:0 18px 42px rgba(0,0,0,.55);}
.grade-btn:hover::before{opacity:1;}
.grade-btn .ge{font-size:2.6rem;display:block;margin-bottom:8px;filter:drop-shadow(0 2px 8px rgba(0,0,0,.4));transition:transform .25s;}
.grade-btn:hover .ge{transform:scale(1.15) rotate(-5deg);}
.grade-btn .gn{font-size:1.05rem;font-weight:700;}
.grade-btn .gs{font-size:.72rem;color:var(--txt2);margin-top:4px;line-height:1.4;}
.grade-btn .g-tag{display:inline-block;font-size:.65rem;font-weight:700;padding:2px 8px;border-radius:99px;margin-top:8px;letter-spacing:.5px;}
.grade-btn.g1{border-color:#2ed57360;}.grade-btn.g1::before{background:rgba(46,213,115,.06);}
.grade-btn.g1 .gn{color:#2ed573;}.grade-btn.g1 .g-tag{background:rgba(46,213,115,.15);color:#2ed573;border:1px solid #2ed57340;}
.grade-btn.g2{border-color:#ffd32a60;}.grade-btn.g2::before{background:rgba(255,211,42,.06);}
.grade-btn.g2 .gn{color:#ffd32a;}.grade-btn.g2 .g-tag{background:rgba(255,211,42,.15);color:#ffd32a;border:1px solid #ffd32a40;}
.grade-btn.g3{border-color:#1e90ff60;}.grade-btn.g3::before{background:rgba(30,144,255,.06);}
.grade-btn.g3 .gn{color:#1e90ff;}.grade-btn.g3 .g-tag{background:rgba(30,144,255,.15);color:#1e90ff;border:1px solid #1e90ff40;}
.grade-btn.g4{border-color:#9b59b660;}.grade-btn.g4::before{background:rgba(155,89,182,.06);}
.grade-btn.g4 .gn{color:#9b59b6;}.grade-btn.g4 .g-tag{background:rgba(155,89,182,.15);color:#9b59b6;border:1px solid #9b59b640;}
.grade-btn.g5{border-color:#ff634860;}.grade-btn.g5::before{background:rgba(255,99,72,.06);}
.grade-btn.g5 .gn{color:#ff6348;}.grade-btn.g5 .g-tag{background:rgba(255,99,72,.15);color:#ff6348;border:1px solid #ff634840;}
.grade-btn.g6{border-color:#ff475760;}.grade-btn.g6::before{background:rgba(255,71,87,.06);}
.grade-btn.g6 .gn{color:#ff4757;}.grade-btn.g6 .g-tag{background:rgba(255,71,87,.15);color:#ff4757;border:1px solid #ff475740;}

/* ── Gender Picker ── */
.gender-picker{display:flex;gap:8px;margin-bottom:14px;flex-wrap:wrap;}
.gender-btn{flex:1;min-width:90px;display:flex;flex-direction:column;align-items:center;gap:5px;padding:12px 8px;border-radius:14px;border:2px solid rgba(255,255,255,.12);background:rgba(255,255,255,.04);cursor:pointer;transition:all .25s cubic-bezier(.34,1.4,.64,1);font-family:'Rubik',sans-serif;}
.gender-btn:hover{border-color:rgba(255,255,255,.25);background:rgba(255,255,255,.08);}
.gender-btn.selected{border-color:var(--a5);background:rgba(155,89,182,.18);box-shadow:0 0 18px rgba(155,89,182,.25);}
.gender-emoji{font-size:1.7rem;line-height:1;}
.gender-label{font-size:.8rem;font-weight:700;color:var(--txt2);}
.gender-btn.selected .gender-label{color:var(--a5);}

/* ── Terms checkbox ── */
.terms-row{display:flex;align-items:flex-start;gap:10px;padding:12px;background:rgba(255,255,255,.04);border:1.5px solid rgba(255,255,255,.09);border-radius:12px;margin-bottom:14px;cursor:pointer;transition:border-color .2s;}
.terms-row:hover{border-color:rgba(255,255,255,.18);}
.terms-row.accepted{border-color:rgba(46,213,115,.4);background:rgba(46,213,115,.06);}
.terms-chk{width:22px;height:22px;flex-shrink:0;border-radius:6px;border:2px solid rgba(255,255,255,.25);display:flex;align-items:center;justify-content:center;margin-top:1px;transition:all .2s;background:transparent;}
.terms-row.accepted .terms-chk{background:var(--a3);border-color:var(--a3);}
.terms-chk-inner{color:#fff;font-size:.85rem;display:none;}
.terms-row.accepted .terms-chk-inner{display:block;}
.terms-text{font-size:.82rem;color:var(--txt2);line-height:1.55;}
.terms-text a{color:var(--a4);text-decoration:underline;cursor:pointer;}

/* ── Optional email note ── */
.email-note{font-size:.76rem;color:var(--txt2);display:flex;align-items:center;gap:5px;margin-top:-8px;margin-bottom:12px;opacity:.8;}
.email-note::before{content:'💡';}
.pcard{background:linear-gradient(135deg,var(--card),var(--card2));border:2px solid rgba(255,255,255,.1);border-radius:20px;padding:18px 24px;width:100%;max-width:420px;margin-bottom:18px;position:relative;overflow:hidden;}
.pcard::before{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(255,71,87,.05),rgba(30,144,255,.05));pointer-events:none;}
.pname{font-size:1.55rem;font-weight:900;color:var(--a2);display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-family:'Fredoka',sans-serif;letter-spacing:.02em;}
.name-glow-blue{color:#00d362;font-family:'Fredoka',sans-serif;font-weight:700;font-size:1.65rem;text-shadow:0 0 8px rgba(0,211,98,.9),0 0 20px rgba(0,211,98,.6),0 0 40px rgba(0,211,98,.35);animation:nameGlow 2.5s ease-in-out infinite;}
@keyframes nameGlow{0%,100%{text-shadow:0 0 8px rgba(0,211,98,.9),0 0 20px rgba(0,211,98,.6),0 0 40px rgba(0,211,98,.3);}50%{text-shadow:0 0 12px rgba(0,211,98,1),0 0 30px rgba(0,211,98,.9),0 0 60px rgba(0,211,98,.5);}}
.special-badge{font-size:.82rem;font-weight:700;background:linear-gradient(135deg,rgba(0,210,211,.2),rgba(30,144,255,.2));border:1.5px solid var(--sc,#00d362);border-radius:99px;padding:4px 13px;color:var(--sc,#00d362);box-shadow:0 0 12px rgba(0,211,53,.25);white-space:nowrap;}
.nickname-badge{font-size:.9rem;color:var(--a5);font-weight:700;background:rgba(155,89,182,.2);border:1px solid var(--a5);border-radius:99px;padding:3px 10px;}
.plevel{font-size:.9rem;color:var(--txt2);margin-top:4px;}
.xp-outer{background:rgba(255,255,255,.1);border-radius:99px;height:12px;margin-top:10px;overflow:hidden;}
.xp-inner{height:100%;border-radius:99px;background:linear-gradient(90deg,var(--a4),var(--a5));transition:width .5s;}
.xp-txt{font-size:.8rem;color:var(--txt2);margin-top:5px;}
.streak-badge{display:inline-flex;align-items:center;gap:5px;background:rgba(255,159,67,.2);border:1px solid var(--streak);border-radius:99px;padding:4px 12px;font-size:.85rem;font-weight:700;color:var(--streak);margin-top:8px;}
.recommend{background:linear-gradient(135deg,rgba(30,144,255,.12),rgba(155,89,182,.12));border:1px solid rgba(30,144,255,.3);border-radius:14px;padding:12px 16px;width:100%;max-width:420px;margin-bottom:16px;font-size:.9rem;display:flex;gap:10px;align-items:center;}
.recommend-icon{font-size:1.5rem;flex-shrink:0;}
.recommend-text{color:var(--txt2);line-height:1.5;}
.recommend-text strong{color:var(--a4);}
.daily-banner{background:linear-gradient(135deg,rgba(255,71,87,.15),rgba(255,211,42,.15));border:2px solid var(--a2);border-radius:16px;padding:14px 18px;width:100%;max-width:420px;margin-bottom:16px;cursor:pointer;transition:transform .2s;display:flex;align-items:center;gap:12px;}
.daily-banner:hover{transform:scale(1.02);}
.daily-banner.done{opacity:.5;cursor:default;}
.grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;width:100%;max-width:420px;}
@media(min-width:680px){.grid{grid-template-columns:repeat(3,1fr);max-width:600px;}}
.cbt{background:linear-gradient(145deg,var(--card),var(--card2));border:2px solid rgba(255,255,255,.07);border-radius:18px;padding:16px 12px;cursor:pointer;transition:all .2s;text-align:center;position:relative;overflow:hidden;}
.cbt:hover:not(.locked){transform:translateY(-5px) scale(1.02);box-shadow:0 16px 40px rgba(0,0,0,.5);}
.cbt.locked{opacity:.45;cursor:not-allowed;}
.cbt::after{content:'';position:absolute;inset:0;border-radius:18px;background:linear-gradient(145deg,rgba(255,255,255,.04),transparent);pointer-events:none;}
.cbt .ci{font-size:2.2rem;display:block;margin-bottom:8px;filter:drop-shadow(0 0 8px rgba(255,255,255,.3));}
.cbt .cn{font-size:.95rem;font-weight:700;}
.cbt .cs{font-size:.72rem;color:var(--txt2);margin-top:3px;}
.cbt.add{border-color:#2ed57330;}.cbt.sub{border-color:#ff475730;}.cbt.mul{border-color:#ffd32a30;}
.cbt.div{border-color:#1e90ff30;}.cbt.word{border-color:#9b59b630;}
.cbt.learn{border-color:#ff634830;background:linear-gradient(145deg,#1a0e2e,#2a1545);}
.cbt.history{border-color:#00d2d330;}.cbt.mistakes{border-color:#ff9f4330;}
.cbt.test{border-color:#00d2d330;background:linear-gradient(145deg,#0a1a2e,#0a2040);}
.cbt.settings{border-color:rgba(255,255,255,.15);}
.gcard{background:linear-gradient(135deg,var(--card),var(--card2));border:1.5px solid rgba(255,255,255,.11);border-radius:24px;padding:26px;width:100%;max-width:580px;box-shadow:0 12px 48px rgba(0,0,0,.6);}
.diffs{display:flex;flex-direction:column;gap:12px;width:100%;max-width:340px;}
.dbtn{padding:16px 20px;border-radius:14px;cursor:pointer;border:2px solid;font-family:'Rubik',sans-serif;font-size:1rem;font-weight:700;transition:all .2s;display:flex;align-items:center;gap:12px;background:transparent;}
.dbtn:hover{transform:scale(1.03);}
.de{border-color:var(--a3);color:var(--a3);}.de:hover{background:rgba(46,213,115,.1);}
.dm{border-color:var(--a2);color:var(--a2);}.dm:hover{background:rgba(255,211,42,.1);}
.dh{border-color:var(--a1);color:var(--a1);}.dh:hover{background:rgba(255,71,87,.1);}
.dx{border-color:var(--a5);color:var(--a5);}.dx:hover{background:rgba(155,89,182,.1);}
.back{margin-top:18px;padding:10px 26px;border-radius:99px;background:rgba(255,255,255,.08);color:var(--txt2);border:1.5px solid rgba(255,255,255,.1);font-family:'Rubik',sans-serif;cursor:pointer;font-size:.9rem;transition:all .2s;font-weight:500;}
.back:hover{background:rgba(255,255,255,.16);color:#fff;border-color:rgba(255,255,255,.25);}
.qhdr{width:100%;max-width:580px;display:flex;justify-content:space-between;align-items:center;margin-bottom:18px;gap:10px;}
.qscore{font-size:1rem;font-weight:700;color:var(--a2);}
.streak-live{display:inline-flex;align-items:center;gap:4px;background:rgba(255,159,67,.2);border:1px solid var(--streak);border-radius:99px;padding:3px 10px;font-size:.82rem;font-weight:700;color:var(--streak);}
.lbadge{padding:4px 12px;border-radius:99px;font-size:.78rem;font-weight:700;}
.easy{background:rgba(46,213,115,.15);color:var(--a3);border:1px solid var(--a3);}
.med{background:rgba(255,211,42,.15);color:var(--a2);border:1px solid var(--a2);}
.hard{background:rgba(255,71,87,.15);color:var(--a1);border:1px solid var(--a1);}
.pts-badge{padding:4px 12px;border-radius:99px;font-size:.78rem;font-weight:700;background:rgba(155,89,182,.15);color:var(--a5);border:1px solid var(--a5);}
.qtxt{font-size:1.35rem;font-weight:700;text-align:center;line-height:1.7;margin-bottom:18px;min-height:56px;letter-spacing:.01em;}
.streak-fire{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%) scale(0);background:linear-gradient(135deg,#ff6348,#ffd32a);border-radius:20px;padding:20px 36px;text-align:center;z-index:1500;transition:transform .3s cubic-bezier(.34,1.56,.64,1);pointer-events:none;border:3px solid var(--a2);}
.streak-fire.show{transform:translate(-50%,-50%) scale(1);}
.sf-val{font-family:'Fredoka',sans-serif;font-weight:700;font-size:3.2rem;color:#fff;}
.sf-lbl{font-size:1rem;color:rgba(255,255,255,.85);}
.mulvis-row{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin:10px 0;}
.mg{background:rgba(255,255,255,.07);border-radius:10px;padding:8px;display:flex;flex-wrap:wrap;gap:4px;max-width:110px;justify-content:center;}
.mi{font-size:1.3rem;}
.mul-table{border-collapse:collapse;font-size:.75rem;margin:0 auto;}
.mul-table td{padding:4px 7px;text-align:center;border:1px solid rgba(255,255,255,.08);min-width:28px;}
.mth{background:rgba(30,144,255,.25);font-weight:700;}
.mhl{background:rgba(255,211,42,.25);font-weight:700;color:var(--a2);}
.expr-wrap{background:rgba(255,255,255,.04);border-radius:14px;padding:14px;margin-bottom:12px;}
.expr-display{min-height:54px;border:2px dashed rgba(255,255,255,.18);border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:1.5rem;font-weight:700;color:var(--a2);margin-bottom:12px;padding:10px;gap:8px;flex-wrap:wrap;direction:ltr;}
.expr-num-inp{width:64px;height:46px;border-radius:10px;background:rgba(255,255,255,.1);border:2.5px solid var(--a4);color:#fff;font-size:1.5rem;font-weight:700;text-align:center;font-family:'Fredoka',sans-serif;outline:none;direction:ltr;transition:border-color .2s;}
.expr-num-inp:focus{border-color:var(--a5);box-shadow:0 0 14px rgba(155,89,182,.35);}
.op-picker{display:flex;gap:8px;flex-wrap:wrap;justify-content:center;margin-bottom:10px;}
.op-btn{width:52px;height:52px;border-radius:14px;font-size:1.6rem;font-weight:900;cursor:pointer;border:none;transition:all .2s;position:relative;display:flex;align-items:center;justify-content:center;flex-shrink:0;}
.op-btn:hover{transform:scale(1.15) rotate(-5deg);}
.op-btn.sel{transform:scale(1.15);box-shadow:0 0 18px currentColor;}
.op-plus{background:linear-gradient(135deg,#2ed573,#1dd1a1);color:#fff;}.op-minus{background:linear-gradient(135deg,#ff4757,#c0392b);color:#fff;}
.op-times{background:linear-gradient(135deg,#ffd32a,#f9ca24);color:#111;}.op-div{background:linear-gradient(135deg,#1e90ff,#0abde3);color:#fff;}
.op-btn .op-sel-ring{display:none;position:absolute;inset:-4px;border-radius:18px;border:3px solid #fff;pointer-events:none;}
.op-btn.sel .op-sel-ring{display:block;}
.multistep-badge{display:inline-flex;align-items:center;gap:5px;background:rgba(255,99,72,.18);border:1px solid var(--a6);border-radius:99px;padding:3px 11px;font-size:.78rem;font-weight:700;color:var(--a6);margin-bottom:8px;}
.quality-bar{margin-top:8px;}.quality-label{font-size:.8rem;color:var(--txt2);margin-bottom:4px;display:flex;justify-content:space-between;}
.quality-outer{background:rgba(255,255,255,.1);border-radius:99px;height:8px;overflow:hidden;}
.quality-inner{height:100%;border-radius:99px;transition:width .6s ease;}
.ans-row{display:flex;gap:10px;align-items:center;direction:ltr;justify-content:center;margin-bottom:14px;}
.ans-eq{font-size:1.8rem;font-weight:900;color:var(--txt2);}
.ans-inp{width:96px;height:62px;border-radius:16px;background:rgba(255,255,255,.08);border:3px solid var(--a4);color:#fff;font-size:2rem;font-weight:900;text-align:center;font-family:'Fredoka',sans-serif;outline:none;direction:ltr;transition:border-color .2s,box-shadow .2s;}
.ans-inp:focus{border-color:var(--a5);box-shadow:0 0 24px rgba(155,89,182,.35);}
.ans-inp.ok{border-color:var(--a3);background:rgba(46,213,115,.1);}
.ans-inp.bad{border-color:var(--a1);background:rgba(255,71,87,.1);animation:shk .3s;}
@keyframes shk{0%,100%{transform:translateX(0);}25%{transform:translateX(-6px);}75%{transform:translateX(6px);}}
.word-inp{width:100%;min-height:74px;border-radius:14px;background:rgba(255,255,255,.06);border:3px solid var(--a5);color:#fff;font-size:.95rem;padding:10px 14px;font-family:'Rubik',sans-serif;outline:none;resize:vertical;direction:rtl;margin-bottom:12px;}
.word-inp:focus{border-color:var(--a2);}
.atts{display:flex;gap:7px;align-items:center;justify-content:center;margin-bottom:12px;}
.adot{width:13px;height:13px;border-radius:50%;background:rgba(255,255,255,.18);transition:all .3s;}
.adot.used{background:var(--a1);}.adot.ok{background:var(--a3);}
.hint-box{background:rgba(255,211,42,.08);border:2px solid var(--a2);border-radius:14px;padding:14px;margin-bottom:12px;display:none;}
.hint-box.on{display:block;}.hint-title{font-size:.88rem;font-weight:700;color:var(--a2);margin-bottom:7px;}
.cubes-row{display:flex;flex-wrap:wrap;gap:4px;justify-content:center;margin:8px 0;}
.cube{width:30px;height:30px;border-radius:6px;display:flex;align-items:center;justify-content:center;font-size:.8rem;font-weight:700;}
.cf{background:var(--a4);color:#fff;}.cr{background:rgba(255,255,255,.08);color:var(--txt2);text-decoration:line-through;}
.fb-box{border-radius:16px;padding:16px;margin-bottom:12px;display:none;line-height:1.75;}
.fb-box.on{display:block;}
.fb-ok{background:rgba(46,213,115,.1);border:2px solid var(--a3);}
.fb-bad{background:rgba(255,71,87,.1);border:2px solid var(--a1);}
.fb-part{background:rgba(255,211,42,.1);border:2px solid var(--a2);}
.fb-title{font-size:1.05rem;font-weight:700;margin-bottom:6px;font-family:'Fredoka',sans-serif;}
.fb-ok .fb-title{color:var(--a3);}.fb-bad .fb-title{color:var(--a1);}.fb-part .fb-title{color:var(--a2);}
.qbtns{display:flex;gap:9px;flex-wrap:wrap;justify-content:center;margin-bottom:10px;}
.qbtn{padding:12px 26px;border-radius:99px;cursor:pointer;border:none;font-family:'Fredoka',sans-serif;font-size:1rem;font-weight:600;transition:all .2s;letter-spacing:.02em;}
.qbtn:hover{transform:scale(1.06);}
.bsubmit{background:linear-gradient(135deg,var(--a3),#1dd1a1);color:#fff;box-shadow:0 4px 18px rgba(46,213,115,.35);}
.bhint{background:rgba(255,211,42,.15);color:var(--a2);border:2px solid var(--a2)!important;}
.bhint:disabled{opacity:.35;cursor:not-allowed;transform:none;}
.bskip{background:rgba(255,255,255,.08);color:var(--txt2);}
.bnext{background:linear-gradient(135deg,var(--a4),var(--a5));color:#fff;box-shadow:0 4px 18px rgba(30,144,255,.3);}
.bmore{background:linear-gradient(135deg,var(--a6),var(--a1));color:#fff;box-shadow:0 4px 18px rgba(255,99,72,.3);}
.pts-pop{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%) scale(0);background:linear-gradient(135deg,var(--card),var(--card2));border:3px solid var(--a2);border-radius:20px;padding:20px 36px;text-align:center;z-index:1000;transition:all .3s cubic-bezier(.34,1.56,.64,1);pointer-events:none;}
.pts-pop.on{transform:translate(-50%,-50%) scale(1);}
.pts-val{font-family:'Fredoka',sans-serif;font-weight:700;font-size:3.2rem;color:var(--a2);}
.lvup-ov{position:fixed;inset:0;background:rgba(0,0,0,.85);display:none;align-items:center;justify-content:center;z-index:2000;}
.lvup-ov.on{display:flex;}
.lvup-card{background:linear-gradient(135deg,#1a1740,#2d1b4e);border:3px solid var(--a5);border-radius:24px;padding:40px;text-align:center;max-width:340px;width:90%;animation:popIn .4s cubic-bezier(.34,1.56,.64,1);}
@keyframes popIn{from{transform:scale(0);opacity:0;}to{transform:scale(1);opacity:1;}}
.cf-p{position:fixed;pointer-events:none;z-index:3000;animation:cfFall 1.8s ease-in forwards;}
@keyframes cfFall{0%{opacity:1;transform:translateY(-20px) rotate(0deg);}100%{opacity:0;transform:translateY(100vh) rotate(720deg);}}
.ltopics{display:flex;flex-direction:column;gap:11px;width:100%;max-width:460px;}
.ltopic{background:linear-gradient(135deg,var(--card),var(--card2));border-radius:16px;padding:16px 18px;display:flex;align-items:center;gap:13px;border:2px solid rgba(255,255,255,.07);cursor:pointer;transition:all .2s;}
.ltopic:hover:not(.ltlock){transform:translateX(-4px);box-shadow:var(--sh);}
.ltopic.ltlock{opacity:.45;cursor:not-allowed;}.ltopic.ltdone{border-color:rgba(46,213,115,.3);}
.lt-icon{font-size:1.9rem;flex-shrink:0;}.lt-info{flex:1;}
.lt-name{font-size:1rem;font-weight:700;}.lt-desc{font-size:.77rem;color:var(--txt2);margin-top:2px;}
.lt-badge{padding:3px 10px;border-radius:99px;font-size:.73rem;font-weight:700;}
.ltnew{background:rgba(255,71,87,.15);color:var(--a1);border:1px solid var(--a1);}
.ltdone-b{background:rgba(46,213,115,.15);color:var(--a3);border:1px solid var(--a3);}
.lesson-c{background:linear-gradient(135deg,var(--card),var(--card2));border-radius:22px;padding:26px;width:100%;max-width:560px;border:2px solid rgba(255,255,255,.09);box-shadow:var(--sh);line-height:1.8;}
.lesson-title{font-family:'Fredoka',sans-serif;font-size:1.7rem;color:var(--a6);margin-bottom:14px;text-align:center;}
.lsec{margin-bottom:18px;}.lsec h3{color:var(--a4);font-size:1rem;margin-bottom:7px;}
.lexample{background:rgba(255,255,255,.05);border-radius:10px;padding:12px;margin:8px 0;text-align:center;font-size:1.3rem;font-weight:700;color:var(--a2);direction:ltr;}
.lexample.rtl{direction:rtl;font-size:1rem;}
.lstep{display:flex;gap:9px;align-items:flex-start;margin-bottom:7px;}
.lstepn{width:24px;height:24px;border-radius:50%;flex-shrink:0;background:var(--a4);display:flex;align-items:center;justify-content:center;font-size:.8rem;font-weight:700;margin-top:2px;}
.lgo{width:100%;padding:15px;border-radius:var(--r);border:none;background:linear-gradient(135deg,var(--a6),var(--a1));color:#fff;font-family:'Rubik',sans-serif;font-size:1rem;font-weight:700;cursor:pointer;margin-top:14px;transition:all .2s;}
.lgo:hover{transform:scale(1.02);}
.exam-hdr{width:100%;max-width:580px;display:flex;justify-content:space-between;align-items:center;margin-bottom:16px;flex-wrap:wrap;gap:8px;}
.exam-timer{background:rgba(255,71,87,.15);border:1px solid var(--a1);padding:5px 13px;border-radius:99px;color:var(--a1);font-weight:700;font-size:.9rem;}
.prog-bar{width:100%;max-width:580px;background:rgba(255,255,255,.08);border-radius:99px;height:7px;margin-bottom:18px;}
.prog-inner{height:100%;border-radius:99px;background:linear-gradient(90deg,#00d2d3,var(--a4));transition:width .4s;}
.exam-topics-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;width:100%;max-width:440px;margin:14px 0;}
.etopic-btn{padding:12px;border-radius:13px;cursor:pointer;border:2px solid rgba(255,255,255,.12);background:var(--card);font-family:'Rubik',sans-serif;font-size:.9rem;font-weight:700;color:var(--txt2);transition:all .2s;text-align:center;}
.etopic-btn.sel{border-color:var(--a4);color:var(--a4);background:rgba(30,144,255,.12);}
.etopic-btn:hover{border-color:var(--a5);color:var(--a5);}
.hist-entry{background:var(--card);border-radius:13px;padding:12px 16px;display:flex;align-items:center;gap:11px;border:1px solid rgba(255,255,255,.07);cursor:pointer;transition:all .2s;}
.hist-entry:hover{background:var(--card2);}
.hist-icon{font-size:1.5rem;flex-shrink:0;}.hist-info{flex:1;}
.hist-q{font-size:.95rem;font-weight:700;}.hist-meta{font-size:.77rem;color:var(--txt2);margin-top:2px;}
.hist-status{padding:3px 9px;border-radius:99px;font-size:.73rem;font-weight:700;}
.hs-ok{background:rgba(46,213,115,.15);color:var(--a3);border:1px solid var(--a3);}
.hs-bad{background:rgba(255,71,87,.15);color:var(--a1);border:1px solid var(--a1);}
.set-section{width:100%;max-width:480px;margin-bottom:20px;}
.set-title{font-size:1rem;font-weight:700;color:var(--a4);margin-bottom:10px;padding-bottom:6px;border-bottom:1px solid rgba(255,255,255,.08);}
.set-row{display:flex;justify-content:space-between;align-items:center;padding:10px 0;border-bottom:1px solid rgba(255,255,255,.04);}
.set-label{font-size:.9rem;}.set-sub{font-size:.75rem;color:var(--txt2);margin-top:2px;}
.set-inp{background:var(--card2);border:2px solid rgba(255,255,255,.15);border-radius:9px;padding:6px 11px;color:#fff;font-family:'Rubik',sans-serif;font-size:.9rem;width:80px;text-align:center;outline:none;}
.set-inp:focus{border-color:var(--a4);}
.pgate{background:linear-gradient(135deg,var(--card),var(--card2));border-radius:22px;padding:28px;width:100%;max-width:420px;border:2px solid var(--a1);text-align:center;}
.pgate-title{font-size:1.2rem;font-weight:700;color:var(--a1);margin-bottom:8px;}
.pgate-q{font-size:1.5rem;font-weight:900;color:var(--a2);margin:16px 0;direction:ltr;}
.pgate-inp{width:100px;height:54px;border-radius:12px;background:rgba(255,255,255,.08);border:3px solid var(--a4);color:#fff;font-size:1.8rem;font-weight:900;text-align:center;font-family:'Rubik',sans-serif;outline:none;margin-bottom:14px;}
.pgate-btn{padding:12px 28px;border-radius:99px;border:none;cursor:pointer;background:linear-gradient(135deg,var(--a4),var(--a5));color:#fff;font-family:'Rubik',sans-serif;font-size:1rem;font-weight:700;}
.pgate-err{color:var(--a1);font-size:.85rem;margin-top:8px;}
.toast{position:fixed;bottom:80px;left:50%;transform:translateX(-50%);background:rgba(0,0,0,.9);color:#fff;padding:10px 20px;border-radius:99px;font-size:.9rem;z-index:9999;pointer-events:none;white-space:nowrap;}
.auth-card{background:linear-gradient(135deg,var(--card),var(--card2));border:2px solid rgba(255,255,255,.1);border-radius:24px;padding:32px 28px;width:100%;max-width:380px;box-shadow:var(--sh);}
.auth-tabs{display:flex;gap:0;background:rgba(255,255,255,.06);border-radius:12px;overflow:hidden;margin-bottom:24px;}
.auth-tab{flex:1;padding:11px;border:none;background:none;color:var(--txt2);font-family:'Rubik',sans-serif;font-size:.95rem;font-weight:700;cursor:pointer;transition:all .2s;}
.auth-tab.active{background:linear-gradient(135deg,var(--a4),var(--a5));color:#fff;}
.auth-form{display:none;}.auth-form.on{display:block;}
.auth-inp{width:100%;padding:13px 16px;border-radius:12px;background:rgba(255,255,255,.07);border:2px solid rgba(255,255,255,.12);color:#fff;font-family:'Rubik',sans-serif;font-size:1rem;outline:none;margin-bottom:13px;direction:rtl;transition:border-color .2s;}
.auth-inp:focus{border-color:var(--a4);}.auth-inp::placeholder{color:var(--txt2);}
.auth-sel{width:100%;padding:13px 16px;border-radius:12px;background:rgba(255,255,255,.07);border:2px solid rgba(255,255,255,.12);color:#fff;font-family:'Rubik',sans-serif;font-size:1rem;outline:none;margin-bottom:13px;direction:rtl;cursor:pointer;}
.auth-sel:focus{border-color:var(--a4);}
.auth-btn{width:100%;padding:14px;border-radius:12px;border:none;background:linear-gradient(135deg,var(--a4),var(--a5));color:#fff;font-family:'Rubik',sans-serif;font-size:1rem;font-weight:700;cursor:pointer;transition:all .2s;margin-top:4px;}
.auth-btn:hover:not(:disabled){transform:scale(1.02);}.auth-btn:disabled{opacity:.6;cursor:not-allowed;}
.auth-err{background:rgba(255,71,87,.15);border:1px solid var(--a1);border-radius:10px;padding:10px 14px;font-size:.88rem;color:var(--a1);margin-bottom:13px;display:none;}
.auth-label{font-size:.82rem;color:var(--txt2);margin-bottom:6px;display:block;}
.logout-btn{background:rgba(255,71,87,.1);border:1px solid var(--a1);border-radius:99px;padding:5px 14px;color:var(--a1);font-size:.78rem;cursor:pointer;font-family:'Rubik',sans-serif;}
.lb-card{background:linear-gradient(135deg,var(--card),var(--card2));border:2px solid rgba(255,255,255,.09);border-radius:20px;padding:16px;width:100%;max-width:420px;margin-bottom:20px;}
.lb-title{font-size:.85rem;font-weight:700;color:var(--a4);margin-bottom:12px;display:flex;align-items:center;gap:6px;}
.lb-row{display:flex;align-items:center;gap:12px;padding:10px 8px;border-radius:12px;margin-bottom:6px;background:rgba(255,255,255,.03);transition:background .2s;}
.lb-row:hover{background:rgba(255,255,255,.07);}
.lb-me{background:rgba(255,211,42,.08)!important;border:1px solid rgba(255,211,42,.2);}
.lb-rank{font-size:1.3rem;min-width:30px;text-align:center;}.lb-info{flex:1;}
.friends-list{display:flex;flex-direction:column;gap:10px;width:100%;max-width:500px;}
.friend-card{background:var(--card);border-radius:14px;padding:14px 16px;display:flex;align-items:center;gap:12px;border:1px solid rgba(255,255,255,.07);cursor:pointer;transition:all .2s;}
.friend-card:hover{background:var(--card2);transform:translateX(-3px);}
.friend-avatar{width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,var(--a4),var(--a5));display:flex;align-items:center;justify-content:center;font-size:1.3rem;flex-shrink:0;}
.friend-result-card{display:flex;align-items:center;justify-content:space-between;background:rgba(255,255,255,.05);border-radius:12px;padding:12px;margin-top:10px;gap:10px;}
.profile-card{background:linear-gradient(135deg,var(--card),var(--card2));border:2px solid rgba(255,255,255,.1);border-radius:24px;padding:28px;width:100%;max-width:420px;text-align:center;}
.profile-avatar{width:80px;height:80px;border-radius:50%;background:linear-gradient(135deg,var(--a4),var(--a5));display:flex;align-items:center;justify-content:center;font-size:2.5rem;margin:0 auto 16px;}
.profile-stat{background:rgba(255,255,255,.05);border-radius:12px;padding:14px;text-align:center;}
.profile-stat-val{font-size:1.5rem;font-weight:900;}.profile-stat-lbl{font-size:.75rem;color:var(--txt2);margin-top:3px;}
.q-game-label{font-size:.78rem;font-weight:700;color:var(--a6);opacity:.8;text-align:center;margin-bottom:6px;letter-spacing:.5px;}
/* ── Multi-step registration ── */
.reg-stepper{display:flex;align-items:center;justify-content:center;gap:0;margin-bottom:24px;}
.reg-step-dot{width:30px;height:30px;border-radius:50%;border:2px solid rgba(255,255,255,.15);display:flex;align-items:center;justify-content:center;font-size:.78rem;font-weight:700;color:var(--txt2);transition:all .35s;background:rgba(255,255,255,.04);flex-shrink:0;}
.reg-step-dot.active{border-color:var(--a4);color:#fff;background:linear-gradient(135deg,var(--a4),var(--a5));box-shadow:0 0 16px rgba(30,144,255,.45);}
.reg-step-dot.done{border-color:var(--a3);color:var(--a3);background:rgba(46,213,115,.12);}
.reg-step-line{flex:1;height:2px;background:rgba(255,255,255,.1);max-width:36px;transition:background .35s;}
.reg-step-line.done{background:var(--a3);}
.reg-step-panel{display:none;}
.reg-step-panel.on{display:block;animation:stepIn .3s ease;}
@keyframes stepIn{from{opacity:0;transform:translateX(-10px);}to{opacity:1;transform:translateX(0);}}
.reg-grade-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:9px;margin-bottom:16px;}
.reg-grade-card{border-radius:15px;border:2px solid rgba(255,255,255,.1);background:rgba(255,255,255,.04);cursor:pointer;padding:11px 5px 9px;text-align:center;font-family:'Fredoka',sans-serif;transition:border-color .2s,background .2s,transform .3s cubic-bezier(.34,1.56,.64,1);position:relative;overflow:hidden;-webkit-tap-highlight-color:transparent;user-select:none;}
.reg-grade-card .rgc-emoji{font-size:1.75rem;display:block;transition:transform .35s cubic-bezier(.34,1.56,.64,1);}
.reg-grade-card:hover .rgc-emoji{transform:rotate(-10deg) scale(1.18);}
.reg-grade-card.selected .rgc-emoji{transform:rotate(8deg) scale(1.28);}
.reg-grade-card .rgc-name{font-size:.85rem;font-weight:700;margin-top:5px;}
.reg-grade-card .rgc-sub{font-size:.62rem;color:var(--txt2);margin-top:2px;line-height:1.3;}
.reg-grade-card::after{content:'';position:absolute;inset:0;border-radius:13px;opacity:0;transition:opacity .2s;pointer-events:none;}
.reg-grade-card:hover::after{opacity:1;}
.reg-grade-card.selected{transform:scale(1.07);}
.reg-grade-card.rg1{border-color:rgba(46,213,115,.22);}.reg-grade-card.rg1::after{background:rgba(46,213,115,.06);}
.reg-grade-card.rg1 .rgc-name{color:#2ed573;}.reg-grade-card.rg1.selected{border-color:#2ed573;background:rgba(46,213,115,.12);box-shadow:0 0 18px rgba(46,213,115,.28);}
.reg-grade-card.rg2{border-color:rgba(255,211,42,.22);}.reg-grade-card.rg2::after{background:rgba(255,211,42,.06);}
.reg-grade-card.rg2 .rgc-name{color:#ffd32a;}.reg-grade-card.rg2.selected{border-color:#ffd32a;background:rgba(255,211,42,.12);box-shadow:0 0 18px rgba(255,211,42,.28);}
.reg-grade-card.rg3{border-color:rgba(30,144,255,.22);}.reg-grade-card.rg3::after{background:rgba(30,144,255,.06);}
.reg-grade-card.rg3 .rgc-name{color:#1e90ff;}.reg-grade-card.rg3.selected{border-color:#1e90ff;background:rgba(30,144,255,.12);box-shadow:0 0 18px rgba(30,144,255,.28);}
.reg-grade-card.rg4{border-color:rgba(155,89,182,.22);}.reg-grade-card.rg4::after{background:rgba(155,89,182,.06);}
.reg-grade-card.rg4 .rgc-name{color:#9b59b6;}.reg-grade-card.rg4.selected{border-color:#9b59b6;background:rgba(155,89,182,.12);box-shadow:0 0 18px rgba(155,89,182,.28);}
.reg-grade-card.rg5{border-color:rgba(255,99,72,.22);}.reg-grade-card.rg5::after{background:rgba(255,99,72,.06);}
.reg-grade-card.rg5 .rgc-name{color:#ff6348;}.reg-grade-card.rg5.selected{border-color:#ff6348;background:rgba(255,99,72,.12);box-shadow:0 0 18px rgba(255,99,72,.28);}
.reg-grade-card.rg6{border-color:rgba(255,71,87,.22);}.reg-grade-card.rg6::after{background:rgba(255,71,87,.06);}
.reg-grade-card.rg6 .rgc-name{color:#ff4757;}.reg-grade-card.rg6.selected{border-color:#ff4757;background:rgba(255,71,87,.12);box-shadow:0 0 18px rgba(255,71,87,.28);}
.reg-next-btn{width:100%;padding:14px;border-radius:12px;border:none;background:linear-gradient(135deg,var(--a4),var(--a5));color:#fff;font-family:'Rubik',sans-serif;font-size:1rem;font-weight:700;cursor:pointer;transition:all .2s;margin-top:4px;}
.reg-next-btn:hover:not(:disabled){transform:scale(1.02);box-shadow:0 6px 22px rgba(30,144,255,.35);}
.reg-next-btn:disabled{opacity:.4;cursor:not-allowed;}
.reg-back-link{text-align:center;margin-top:11px;font-size:.83rem;color:var(--txt2);cursor:pointer;transition:color .2s;}
.reg-back-link:hover{color:#fff;}
.reg-step-title{font-family:'Fredoka',sans-serif;font-size:1.2rem;font-weight:700;color:var(--a2);margin-bottom:3px;text-align:center;}
.reg-step-sub{font-size:.8rem;color:var(--txt2);margin-bottom:16px;text-align:center;line-height:1.5;}
::-webkit-scrollbar{width:5px;height:5px;}::-webkit-scrollbar-track{background:rgba(255,255,255,.04);}::-webkit-scrollbar-thumb{background:rgba(255,255,255,.2);border-radius:99px;}
@media(max-width:420px){.logo{font-size:2.4rem;}.qtxt{font-size:1.05rem;}.ans-inp{width:72px;height:50px;font-size:1.5rem;}}

/* ── Desktop: fix category grid and cards ── */
@media(min-width:820px){
  .sec-label {
    max-width: 860px !important;
  }
  .grid {
    max-width: 860px !important;
    grid-template-columns: repeat(4, 1fr) !important;
    gap: 16px !important;
  }
  .cbt {
    padding: 20px 14px !important;
    border-radius: 20px !important;
  }
  .cbt .ci {
    font-size: 2.4rem !important;
  }
  .cbt .cn {
    font-size: 1rem !important;
  }
  .cbt .cs {
    font-size: .75rem !important;
    white-space: normal !important;
  }
  .daily-banner {
    max-width: 860px !important;
  }
  .recommend {
    max-width: 860px !important;
  }
}