:root{
  --bg:#0f0a1e; --bg2:#171029; --panel:#1d1435; --panel2:#251a42; --line:#31245a; --line2:#443070;
  --txt:#f2ecff; --dim:#b9a8e0; --dim2:#8a78b8;
  --p1:#ff4fa3; --p2:#7c5cff; --p3:#00d4ff; --ok:#3ddc84; --warn:#ffc531; --err:#ff5f6d;
  --r:16px; --font:'Nunito',-apple-system,'Segoe UI',system-ui,sans-serif;
}
[data-theme="sunset"]{--bg:#1a0d14;--bg2:#26131d;--panel:#331825;--panel2:#41202f;--line:#5c2b3f;--line2:#7a3a53;--p1:#ff7a45;--p2:#ff4fa3;--p3:#ffc531}
[data-theme="forest"]{--bg:#06170f;--bg2:#0a2118;--panel:#0f2e21;--panel2:#153c2c;--line:#1e5540;--line2:#2a7355;--p1:#3ddc84;--p2:#00b894;--p3:#a8e063}
[data-theme="candy"]{--bg:#1c0f1a;--bg2:#2a1628;--panel:#371d34;--panel2:#452542;--line:#5e3459;--line2:#7d4676;--p1:#ff6ec7;--p2:#c77dff;--p3:#4cc9f0}
[data-theme="space"]{--bg:#04060f;--bg2:#080d1c;--panel:#0d1428;--panel2:#131c36;--line:#1e2a4d;--line2:#2c3d69;--p1:#4cc9f0;--p2:#7c5cff;--p3:#00f5d4}

*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{height:100%;margin:0;overscroll-behavior:none}
body{
  font-family:var(--font);background:
    radial-gradient(1100px 600px at 10% -10%,color-mix(in srgb,var(--p2) 26%,transparent),transparent 60%),
    radial-gradient(900px 520px at 95% 0%,color-mix(in srgb,var(--p1) 20%,transparent),transparent 55%),
    var(--bg);
  color:var(--txt);-webkit-font-smoothing:antialiased;overflow:hidden;user-select:none;
}
button,input,select,textarea{font:inherit;color:inherit}
::-webkit-scrollbar{width:9px;height:9px}
::-webkit-scrollbar-thumb{background:var(--line2);border-radius:8px}

.app{display:grid;grid-template-columns:250px 1fr;height:100vh}

/* ---------------------------------------------------------------- sidebar */
.side{background:linear-gradient(180deg,var(--bg2),var(--bg));border-right:2px solid var(--line);display:flex;flex-direction:column;overflow:hidden}
.who{padding:16px 16px 12px;text-align:center}
.ava{font-size:44px;line-height:1;filter:drop-shadow(0 4px 14px color-mix(in srgb,var(--p1) 55%,transparent));cursor:pointer;transition:.2s}
.ava:hover{transform:scale(1.12) rotate(-6deg)}
.who h1{margin:6px 0 1px;font-size:17px;font-weight:800;letter-spacing:-.01em}
.who .lvl{font-size:11.5px;color:var(--p3);font-weight:800;text-transform:uppercase;letter-spacing:.07em}
.xpbar{height:9px;background:#00000055;border-radius:9px;overflow:hidden;margin:9px 0 4px;border:1px solid var(--line)}
.xpbar>i{display:block;height:100%;background:linear-gradient(90deg,var(--p3),var(--p1));transition:width .6s cubic-bezier(.2,.9,.3,1)}
.who .xt{font-size:10.5px;color:var(--dim2);font-weight:700}
.stats{display:flex;gap:6px;justify-content:center;margin-top:9px;flex-wrap:wrap}
.stat{background:var(--panel);border:1.5px solid var(--line);border-radius:11px;padding:4px 9px;font-size:12px;font-weight:800;display:flex;gap:4px;align-items:center}
.stat.fire{border-color:var(--warn);color:var(--warn)}
.stat.coin{border-color:var(--p3);color:var(--p3)}

nav{flex:1;overflow-y:auto;padding:6px 9px 14px}
.ni{display:flex;align-items:center;gap:10px;padding:10px 11px;border-radius:12px;cursor:pointer;color:var(--dim);
  font-weight:800;font-size:14px;margin-bottom:3px;border:1.5px solid transparent;transition:.14s}
.ni:hover{background:var(--panel);color:var(--txt);transform:translateX(3px)}
.ni.on{background:linear-gradient(90deg,color-mix(in srgb,var(--p2) 32%,transparent),color-mix(in srgb,var(--p1) 16%,transparent));
  color:#fff;border-color:color-mix(in srgb,var(--p2) 55%,transparent)}
.ni .em{font-size:19px;width:24px;text-align:center}
.ni .bdg{margin-left:auto;background:var(--p1);color:#fff;border-radius:20px;padding:1px 7px;font-size:10.5px}
.ngroup{padding:12px 12px 5px;font-size:10px;letter-spacing:.15em;text-transform:uppercase;color:var(--dim2);font-weight:900}
.pet{margin:6px 10px 12px;background:var(--panel);border:1.5px solid var(--line);border-radius:14px;padding:10px;text-align:center}
.pet .pe{font-size:32px;line-height:1}
.pet .pn{font-size:12px;font-weight:800;margin-top:3px}
.pet .pb{height:6px;background:#00000055;border-radius:6px;overflow:hidden;margin-top:6px}
.pet .pb>i{display:block;height:100%;background:linear-gradient(90deg,var(--ok),var(--p3))}

/* ------------------------------------------------------------------- main */
.main{display:flex;flex-direction:column;overflow:hidden;min-width:0}
.top{padding:14px 24px;border-bottom:2px solid var(--line);display:flex;align-items:center;gap:14px;background:#00000033;backdrop-filter:blur(8px)}
.top h2{margin:0;font-size:21px;font-weight:900;letter-spacing:-.02em}
.top p{margin:2px 0 0;color:var(--dim);font-size:13px}
.sp{flex:1}
.view{flex:1;overflow-y:auto;padding:20px 24px 60px}

.btn{background:var(--panel2);border:2px solid var(--line2);border-radius:13px;padding:10px 17px;cursor:pointer;
  font-weight:800;font-size:14px;transition:.14s;display:inline-flex;align-items:center;gap:8px}
.btn:hover{border-color:var(--p2);transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn:disabled{opacity:.4;cursor:not-allowed;transform:none}
.btn.go{background:linear-gradient(135deg,var(--p1),var(--p2));border-color:transparent;color:#fff;
  box-shadow:0 6px 22px color-mix(in srgb,var(--p1) 42%,transparent)}
.btn.go:hover{box-shadow:0 10px 30px color-mix(in srgb,var(--p1) 55%,transparent)}
.btn.sm{padding:6px 12px;font-size:12.5px;border-radius:10px}
.btn.gh{background:transparent}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}

.card{background:linear-gradient(180deg,var(--panel),var(--bg2));border:2px solid var(--line);border-radius:var(--r);overflow:hidden;margin-bottom:16px}
.card>h3{margin:0;padding:13px 16px;font-size:12.5px;letter-spacing:.09em;text-transform:uppercase;color:var(--dim);
  border-bottom:1.5px solid var(--line);font-weight:900;display:flex;align-items:center;gap:8px}
.card>h3 .rt{margin-left:auto;display:flex;gap:7px}
.card .bd{padding:16px}

.grid{display:grid;gap:14px}
.g2{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.g3{grid-template-columns:repeat(auto-fit,minmax(210px,1fr))}
.g4{grid-template-columns:repeat(auto-fit,minmax(160px,1fr))}

/* world tiles */
.world{border:2.5px solid var(--line);border-radius:18px;padding:17px;cursor:pointer;transition:.16s;position:relative;overflow:hidden;
  background:linear-gradient(160deg,var(--panel2),var(--bg2))}
.world:hover{transform:translateY(-4px) scale(1.015);border-color:var(--wc)}
.world .we{font-size:38px;line-height:1}
.world h4{margin:8px 0 3px;font-size:16.5px;font-weight:900}
.world .ws{font-size:12px;color:var(--dim);min-height:32px}
.world .mb{height:8px;background:#00000055;border-radius:8px;overflow:hidden;margin-top:10px}
.world .mb>i{display:block;height:100%;border-radius:8px;transition:width .8s}
.world .mt{display:flex;justify-content:space-between;font-size:11px;font-weight:800;margin-top:5px;color:var(--dim)}
.world .glow{position:absolute;inset:-40% -20% auto auto;width:150px;height:150px;border-radius:50%;filter:blur(46px);opacity:.5}

/* quiz */
.quiz{max-width:820px;margin:0 auto}
.qbar{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.qprog{flex:1;height:12px;background:#00000055;border-radius:12px;overflow:hidden;border:1.5px solid var(--line)}
.qprog>i{display:block;height:100%;background:linear-gradient(90deg,var(--p3),var(--ok));transition:width .4s}
.combo{font-weight:900;font-size:15px;color:var(--warn);min-width:56px;text-align:right}
.passage{background:var(--panel2);border:2px solid var(--line);border-radius:14px;padding:14px 17px;margin-bottom:14px;max-height:270px;overflow-y:auto;user-select:text}
.passage h4{margin:0 0 8px;font-size:16px}
.passage p{margin:0 0 9px;line-height:1.62;font-size:14.5px}
.qcard{background:linear-gradient(180deg,var(--panel),var(--bg2));border:2.5px solid var(--line2);border-radius:20px;padding:22px}
.qmeta{display:flex;gap:8px;align-items:center;font-size:11px;color:var(--dim2);font-weight:800;text-transform:uppercase;letter-spacing:.06em;margin-bottom:10px}
.tag{background:var(--panel2);border:1.5px solid var(--line2);border-radius:20px;padding:2px 9px}
.tag.weak{border-color:var(--warn);color:var(--warn)}
.tag.new{border-color:var(--p3);color:var(--p3)}
.tag.lang{border-color:var(--p1);color:var(--p1)}
.qtext{font-size:22px;font-weight:800;line-height:1.4;margin-bottom:18px;white-space:pre-wrap;user-select:text}
.opts{display:grid;gap:10px;grid-template-columns:repeat(auto-fit,minmax(190px,1fr))}
.opt{background:var(--panel2);border:2.5px solid var(--line2);border-radius:14px;padding:15px 17px;cursor:pointer;
  font-size:17px;font-weight:800;text-align:left;transition:.12s;display:flex;gap:10px;align-items:center}
.opt:hover{border-color:var(--p2);transform:translateY(-2px)}
.opt .k{width:26px;height:26px;border-radius:8px;background:var(--line);display:grid;place-items:center;font-size:13px;flex:0 0 26px}
.opt.right{border-color:var(--ok);background:color-mix(in srgb,var(--ok) 22%,transparent);animation:pop .35s}
.opt.wrong{border-color:var(--err);background:color-mix(in srgb,var(--err) 20%,transparent);animation:shake .35s}
.opt.dim{opacity:.4}
@keyframes pop{0%{transform:scale(1)}50%{transform:scale(1.05)}100%{transform:scale(1)}}
@keyframes shake{0%,100%{transform:translateX(0)}25%{transform:translateX(-7px)}75%{transform:translateX(7px)}}
.ansin{width:100%;background:var(--bg);border:2.5px solid var(--line2);border-radius:14px;padding:15px 17px;font-size:24px;
  font-weight:900;text-align:center;outline:none;transition:.14s;letter-spacing:.02em}
.ansin:focus{border-color:var(--p2);box-shadow:0 0 0 4px color-mix(in srgb,var(--p2) 25%,transparent)}
.ansin.right{border-color:var(--ok)}.ansin.wrong{border-color:var(--err);animation:shake .35s}
textarea.write{width:100%;background:var(--bg);border:2.5px solid var(--line2);border-radius:14px;padding:14px;
  font-size:16px;line-height:1.65;min-height:190px;outline:none;resize:vertical;user-select:text}
textarea.write:focus{border-color:var(--p2)}
.fb{margin-top:16px;border-radius:14px;padding:14px 17px;font-size:15px;font-weight:700;line-height:1.55;animation:slide .3s}
.fb.ok{background:color-mix(in srgb,var(--ok) 17%,transparent);border:2px solid var(--ok)}
.fb.no{background:color-mix(in srgb,var(--err) 15%,transparent);border:2px solid var(--err)}
.fb.close{background:color-mix(in srgb,var(--warn) 15%,transparent);border:2px solid var(--warn)}
.fb .exp{font-weight:600;color:var(--dim);font-size:13.5px;margin-top:6px;white-space:pre-wrap}
@keyframes slide{from{transform:translateY(10px);opacity:0}}
.hintbox{margin-top:12px;background:color-mix(in srgb,var(--p3) 12%,transparent);border:2px dashed var(--p3);
  border-radius:12px;padding:11px 14px;font-size:14px;font-weight:700;color:var(--p3)}

/* visuals inside questions */
.vis{margin:0 0 16px}
.fracbar{display:flex;width:260px;height:44px;border:3px solid var(--txt);border-radius:8px;overflow:hidden}
.fracbar span{flex:1;border-right:2px solid var(--txt)}
.fracbar span:last-child{border-right:0}
.fracbar span.on{background:var(--p1)}
.vgrid{display:inline-block;border:2px solid var(--txt);border-radius:5px;overflow:hidden}
.vgrid .r{display:flex}
.vgrid .r span{width:22px;height:22px;border:1px solid color-mix(in srgb,var(--txt) 45%,transparent);background:color-mix(in srgb,var(--p3) 22%,transparent)}
.vrect{border:3px solid var(--p3);border-radius:8px;display:grid;place-items:center;font-weight:900;color:var(--p3)}
.vline{position:relative;height:52px;width:290px;margin-top:12px}
.vline .ln{position:absolute;top:22px;left:0;right:0;height:3px;background:var(--txt)}
.vline .tk{position:absolute;top:14px;width:3px;height:19px;background:var(--txt)}
.vline .lb{position:absolute;top:34px;transform:translateX(-50%);font-size:12px;font-weight:800;color:var(--dim)}
.vline .ar{position:absolute;top:-6px;transform:translateX(-50%);font-size:24px}
.vbars{display:flex;align-items:flex-end;gap:16px;height:130px;border-bottom:3px solid var(--txt);padding-bottom:2px;width:fit-content}
.vbars .b{text-align:center}
.vbars .bar{width:34px;background:linear-gradient(180deg,var(--p1),var(--p2));border-radius:6px 6px 0 0;transition:height .5s}
.vbars .bl{font-size:22px;margin-top:4px}
.vgroups{display:flex;gap:11px;flex-wrap:wrap}
.vgroups .g{border:2.5px dashed var(--p3);border-radius:14px;padding:8px 11px;font-size:19px;letter-spacing:3px}
.vclock{font-size:46px}
.vshape{font-size:56px}

/* focus check */
.fcheck{position:fixed;z-index:300;font-size:40px;cursor:pointer;animation:twinkle .8s infinite alternate;filter:drop-shadow(0 0 16px var(--warn))}
@keyframes twinkle{from{transform:scale(1) rotate(-8deg)}to{transform:scale(1.22) rotate(8deg)}}

/* misc */
.pill{display:inline-flex;align-items:center;gap:5px;padding:3px 11px;border-radius:20px;font-size:11.5px;font-weight:900;background:var(--panel2);border:1.5px solid var(--line2)}
.pill.l4{border-color:var(--ok);color:var(--ok)}
.pill.l3{border-color:#a8e063;color:#a8e063}
.pill.l2{border-color:var(--warn);color:var(--warn)}
.pill.l1{border-color:var(--err);color:var(--err)}
.mini{font-size:12px;color:var(--dim)}
.big{font-size:34px;font-weight:900;line-height:1}
.kv{display:grid;grid-template-columns:auto 1fr;gap:7px 16px;font-size:14px}
.kv b{color:var(--dim);font-weight:700}
table.t{width:100%;border-collapse:collapse;font-size:13.5px}
table.t th{text-align:left;padding:8px 10px;border-bottom:2px solid var(--line);color:var(--dim);font-size:11px;text-transform:uppercase;letter-spacing:.05em}
table.t td{padding:8px 10px;border-bottom:1px solid var(--line)}
table.t tr:hover td{background:var(--panel2)}
.bar-mini{height:7px;background:#00000055;border-radius:7px;overflow:hidden;min-width:70px}
.bar-mini>i{display:block;height:100%;border-radius:7px}
.empty{padding:48px 20px;text-align:center;color:var(--dim2)}
.empty .e{font-size:46px;margin-bottom:10px;opacity:.6}
.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);background:var(--panel2);border:2.5px solid var(--p2);
  border-radius:15px;padding:13px 22px;z-index:400;font-weight:800;box-shadow:0 14px 40px #0009;animation:up .3s;max-width:90vw;text-align:center}
.toast.ok{border-color:var(--ok)}.toast.no{border-color:var(--err)}
@keyframes up{from{transform:translate(-50%,18px);opacity:0}}
.badge{border:2px solid var(--line);border-radius:15px;padding:13px;text-align:center;background:var(--panel2);opacity:.35;transition:.2s}
.badge.got{opacity:1;border-color:var(--warn);box-shadow:0 0 20px color-mix(in srgb,var(--warn) 30%,transparent)}
.badge .bi{font-size:32px}
.badge .bn{font-weight:900;font-size:12.5px;margin-top:5px}
.badge .bd{font-size:10.5px;color:var(--dim2);margin-top:3px;line-height:1.35}
.quest{display:flex;align-items:center;gap:11px;padding:11px 13px;border:2px solid var(--line);border-radius:13px;margin-bottom:9px;background:var(--panel2)}
.quest.done{border-color:var(--ok)}
.quest .qt{flex:1;font-weight:800;font-size:14px}
.quest .qp{height:7px;background:#00000055;border-radius:7px;overflow:hidden;margin-top:5px}
.quest .qp>i{display:block;height:100%;background:linear-gradient(90deg,var(--p3),var(--ok))}
.shopitem{border:2px solid var(--line);border-radius:15px;padding:14px;text-align:center;background:var(--panel2);transition:.15s}
.shopitem:hover{transform:translateY(-3px);border-color:var(--p2)}
.shopitem .si{font-size:34px}
.shopitem .sn{font-weight:900;font-size:13px;margin:5px 0 2px}
.chart{display:flex;align-items:flex-end;gap:3px;height:110px}
.chart .c{flex:1;background:linear-gradient(180deg,var(--p3),var(--p2));border-radius:4px 4px 0 0;min-height:2px;position:relative}
.chart .c:hover::after{content:attr(data-v);position:absolute;bottom:100%;left:50%;transform:translateX(-50%);
  background:var(--panel2);border:1.5px solid var(--line2);border-radius:7px;padding:3px 7px;font-size:11px;white-space:nowrap;font-weight:800}
label.f{display:block;margin-bottom:12px}
label.f>span{display:block;font-size:12px;color:var(--dim);margin-bottom:5px;font-weight:800}
input[type=text],input[type=number],input[type=date],select,textarea.sm{width:100%;background:var(--bg);border:2px solid var(--line2);
  border-radius:11px;padding:9px 12px;outline:none;font-size:14px}
input:focus,select:focus{border-color:var(--p2)}
.chk{display:flex;align-items:center;gap:9px;padding:8px 11px;border:2px solid var(--line);border-radius:11px;cursor:pointer;margin-bottom:7px;font-size:13.5px;font-weight:700}
.chk:hover{border-color:var(--p2)}
.chk input{width:17px;height:17px;accent-color:var(--p1)}
.chk.on{border-color:var(--p1);background:color-mix(in srgb,var(--p1) 12%,transparent)}
.conf{position:fixed;pointer-events:none;z-index:500;font-size:22px;animation:fall linear forwards}
@keyframes fall{to{transform:translateY(105vh) rotate(720deg);opacity:0}}
@media(max-width:860px){.app{grid-template-columns:1fr;grid-template-rows:auto 1fr}
  .side{flex-direction:row;overflow-x:auto;border-right:0;border-bottom:2px solid var(--line)}
  .who,.pet{display:none}nav{display:flex;padding:8px}.ni{white-space:nowrap}.ngroup{display:none}}