/* ============ NEONPLAY ============ */
:root{
  --bg:#070713; --bg2:#0d0d22; --panel:#12122c; --panel2:#1a1a3d;
  --line:rgba(255,255,255,.09);
  --txt:#e8e8ff; --dim:#9a9ac4;
  --c1:#00e5ff; --c2:#ff2fb9; --c3:#8b5cff; --c4:#39ff88; --c5:#ffd93d;
  --danger:#ff4d6d;
  --r:14px;
  --shadow:0 18px 50px rgba(0,0,0,.55);
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0; background:var(--bg); color:var(--txt);
  font-family:"Segoe UI",system-ui,-apple-system,Roboto,Helvetica,Arial,sans-serif;
  -webkit-font-smoothing:antialiased; overflow-x:hidden;
}
.hidden{display:none !important}
button{font-family:inherit}
::selection{background:var(--c2);color:#fff}

*::-webkit-scrollbar{width:10px;height:10px}
*::-webkit-scrollbar-thumb{background:#2a2a55;border-radius:8px}
*::-webkit-scrollbar-track{background:transparent}

/* ---------- buttons ---------- */
.btn{
  cursor:pointer;border:1px solid var(--line);background:var(--panel2);color:var(--txt);
  padding:11px 18px;border-radius:10px;font-weight:700;font-size:14px;letter-spacing:.4px;
  transition:transform .12s ease, box-shadow .18s ease, background .18s ease, border-color .18s;
}
.btn:hover{transform:translateY(-1px);border-color:rgba(255,255,255,.25)}
.btn:active{transform:translateY(1px)}
.btn-primary{
  background:linear-gradient(100deg,var(--c2),var(--c3) 55%,var(--c1));
  color:#08081a;border:0;box-shadow:0 8px 26px rgba(255,47,185,.32);width:100%;padding:14px;
  font-size:15px;letter-spacing:1.2px;
}
.btn-ghost{background:transparent;width:100%;margin-top:12px;color:var(--dim)}
.btn-ghost:hover{color:var(--txt)}
.btn-mini{padding:7px 12px;font-size:12px;border-radius:8px;background:rgba(255,255,255,.06)}

/* ================= AUTH ================= */
.auth-screen{min-height:100vh;display:grid;place-items:center;padding:24px;position:relative;overflow:hidden}
.auth-bg{
  position:fixed;inset:-30%;z-index:0;
  background:
    radial-gradient(38vw 38vw at 18% 22%, rgba(255,47,185,.28), transparent 62%),
    radial-gradient(42vw 42vw at 82% 26%, rgba(0,229,255,.22), transparent 62%),
    radial-gradient(46vw 46vw at 50% 92%, rgba(139,92,255,.26), transparent 62%);
  filter:blur(10px);animation:drift 22s ease-in-out infinite alternate;
}
@keyframes drift{to{transform:translate3d(4%, -3%, 0) scale(1.12)}}
.auth-card{
  position:relative;z-index:1;width:min(430px,100%);
  background:linear-gradient(180deg,rgba(22,22,50,.94),rgba(10,10,26,.96));
  border:1px solid var(--line);border-radius:22px;padding:34px 30px 26px;box-shadow:var(--shadow);
  backdrop-filter:blur(14px);
}
.logo{text-align:center;margin-bottom:24px}
.logo-mark{font-size:44px;display:block;filter:drop-shadow(0 0 16px var(--c2))}
.logo h1{margin:6px 0 4px;font-size:34px;letter-spacing:5px;font-weight:800}
.logo h1 span{background:linear-gradient(90deg,var(--c2),var(--c1));-webkit-background-clip:text;background-clip:text;color:transparent}
.tagline{margin:0;color:var(--dim);font-size:13px;letter-spacing:.6px}
.tabs{display:flex;gap:6px;background:rgba(0,0,0,.3);padding:5px;border-radius:12px;margin-bottom:20px}
.tab{flex:1;padding:10px;border:0;background:transparent;color:var(--dim);border-radius:9px;cursor:pointer;font-weight:700;font-size:13px}
.tab.active{background:var(--panel2);color:var(--txt);box-shadow:0 2px 12px rgba(0,0,0,.4)}
.auth-form label{display:block;font-size:12px;color:var(--dim);margin-bottom:14px;letter-spacing:.7px;text-transform:uppercase;font-weight:700}
.auth-form input{
  display:block;width:100%;margin-top:7px;padding:13px 14px;border-radius:11px;
  border:1px solid var(--line);background:rgba(0,0,0,.35);color:var(--txt);font-size:15px;
  text-transform:none;letter-spacing:normal;font-weight:500;outline:none;transition:border-color .16s, box-shadow .16s;
}
.auth-form input:focus{border-color:var(--c1);box-shadow:0 0 0 3px rgba(0,229,255,.15)}
.avatar-pick{display:flex;flex-wrap:wrap;gap:8px;margin:4px 0 18px}
.avatar-pick button{
  font-size:20px;width:42px;height:42px;border-radius:11px;cursor:pointer;
  background:rgba(255,255,255,.05);border:1px solid var(--line);line-height:1;
}
.avatar-pick button.sel{border-color:var(--c1);background:rgba(0,229,255,.16);transform:scale(1.06)}
.msg{min-height:18px;margin:12px 0 0;font-size:13px;text-align:center;color:var(--danger)}
.msg.ok{color:var(--c4)}
.disclaimer{color:#6e6e96;font-size:11px;line-height:1.55;text-align:center;margin:18px 0 0}

/* ================= SHELL ================= */
.topbar{
  position:sticky;top:0;z-index:40;display:flex;align-items:center;gap:16px;
  padding:14px 22px;background:rgba(7,7,19,.86);backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.brand{font-weight:800;letter-spacing:3px;font-size:17px;white-space:nowrap}
.brand b{background:linear-gradient(90deg,var(--c2),var(--c1));-webkit-background-clip:text;background-clip:text;color:transparent}
.search-wrap{flex:1;max-width:420px}
#search{
  width:100%;padding:10px 14px;border-radius:10px;border:1px solid var(--line);
  background:rgba(255,255,255,.05);color:var(--txt);outline:none;font-size:14px;
}
#search:focus{border-color:var(--c3)}
.user-chip{margin-left:auto;display:flex;align-items:center;gap:10px}
.ava{font-size:22px}
.uname{font-weight:700;font-size:14px;max-width:120px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

.filters{display:flex;gap:8px;padding:16px 22px 4px;flex-wrap:wrap}
.chip{
  cursor:pointer;padding:8px 15px;border-radius:999px;border:1px solid var(--line);
  background:rgba(255,255,255,.04);color:var(--dim);font-size:13px;font-weight:700;
}
.chip.active{background:linear-gradient(90deg,var(--c3),var(--c2));color:#0a0a1e;border-color:transparent}

main{padding:10px 22px 40px;max-width:1500px;margin:0 auto}
.stats-strip{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px;margin:14px 0 24px}
.stat{background:linear-gradient(160deg,var(--panel),var(--bg2));border:1px solid var(--line);border-radius:var(--r);padding:14px 16px}
.stat b{display:block;font-size:24px;line-height:1.2}
.stat span{color:var(--dim);font-size:11px;text-transform:uppercase;letter-spacing:1px}

.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(215px,1fr));gap:16px}
.card{
  position:relative;cursor:pointer;border-radius:var(--r);overflow:hidden;
  border:1px solid var(--line);background:linear-gradient(165deg,var(--panel),#0b0b1c);
  padding:18px;min-height:172px;display:flex;flex-direction:column;
  transition:transform .16s ease, box-shadow .2s ease, border-color .2s;
}
.card:hover{transform:translateY(-4px);border-color:rgba(255,255,255,.22);box-shadow:0 16px 34px rgba(0,0,0,.5)}
.card .glow{position:absolute;inset:auto -30% -60% -30%;height:130px;filter:blur(34px);opacity:.5;transition:opacity .2s}
.card:hover .glow{opacity:.9}
.card .emoji{font-size:34px;margin-bottom:10px;position:relative}
.card h3{margin:0 0 6px;font-size:16px;position:relative}
.card p{margin:0;color:var(--dim);font-size:12.5px;line-height:1.5;position:relative;flex:1}
.card .meta{display:flex;justify-content:space-between;align-items:center;margin-top:12px;position:relative;font-size:11px}
.tagpill{padding:3px 9px;border-radius:999px;background:rgba(255,255,255,.08);color:var(--dim);font-weight:700;letter-spacing:.5px}
.best{color:var(--c5);font-weight:800}
.empty{text-align:center;color:var(--dim);padding:60px 0}
.foot{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;padding:18px 22px;border-top:1px solid var(--line);color:#5f5f8a;font-size:12px}

/* ================= STAGE ================= */
.stage{position:fixed;inset:0;z-index:60;background:radial-gradient(80vw 80vh at 50% 0%,#12122c,#05050f 70%);display:flex;flex-direction:column}
.stage-bar{display:flex;align-items:center;gap:14px;padding:12px 18px;border-bottom:1px solid var(--line);background:rgba(7,7,19,.7)}
.stage-bar h2{margin:0;font-size:17px;letter-spacing:1px}
.stage-meta{margin-left:auto;display:flex;align-items:center;gap:8px}
.pill{padding:6px 12px;border-radius:999px;background:rgba(255,217,61,.14);color:var(--c5);font-size:12px;font-weight:800}
.stage-body{flex:1;display:grid;place-items:center;padding:18px;overflow:auto}
#stage-mount{max-width:100%}
.stage-help{padding:10px 18px 16px;text-align:center;color:var(--dim);font-size:12.5px;border-top:1px solid var(--line)}
.stage-help kbd{
  background:var(--panel2);border:1px solid var(--line);border-bottom-width:2px;border-radius:6px;
  padding:2px 7px;font-size:11px;font-family:inherit;color:var(--txt);margin:0 2px;
}

/* ---------- shared game UI ---------- */
.gwrap{display:flex;gap:22px;align-items:flex-start;flex-wrap:wrap;justify-content:center}
.gpanel{
  min-width:170px;background:var(--panel);border:1px solid var(--line);border-radius:var(--r);
  padding:16px;display:flex;flex-direction:column;gap:12px;
}
.gpanel h4{margin:0;font-size:11px;letter-spacing:1.4px;color:var(--dim);text-transform:uppercase}
.gpanel .big{font-size:30px;font-weight:800;line-height:1}
.gpanel .row{display:flex;justify-content:space-between;font-size:13px;color:var(--dim)}
.gpanel .row b{color:var(--txt)}
canvas{background:#05050f;border-radius:var(--r);border:1px solid var(--line);display:block;max-width:100%;touch-action:none}
.gover{
  position:absolute;inset:0;display:grid;place-items:center;text-align:center;
  background:rgba(5,5,15,.86);border-radius:var(--r);backdrop-filter:blur(3px);z-index:5;
}
.gover h3{font-size:28px;margin:0 0 6px;letter-spacing:2px}
.gover p{color:var(--dim);margin:0 0 16px}
.rel{position:relative;display:inline-block}
.seg{display:flex;gap:6px;flex-wrap:wrap}
.seg button{
  flex:1;padding:8px 10px;font-size:12px;border-radius:8px;cursor:pointer;font-weight:700;
  background:rgba(255,255,255,.05);border:1px solid var(--line);color:var(--dim);
}
.seg button.on{background:var(--c3);border-color:transparent;color:#0a0a1e}

/* ---------- toast ---------- */
.toast{
  position:fixed;left:50%;bottom:28px;transform:translate(-50%,140%);z-index:99;
  background:var(--panel2);border:1px solid var(--line);padding:12px 20px;border-radius:12px;
  box-shadow:var(--shadow);font-weight:700;font-size:14px;transition:transform .32s cubic-bezier(.2,1.3,.4,1);
}
.toast.show{transform:translate(-50%,0)}

@media (max-width:720px){
  .topbar{flex-wrap:wrap}
  .search-wrap{order:3;flex-basis:100%;max-width:none}
  main{padding:10px 14px 30px}
  .filters{padding:14px 14px 4px}
  .grid{grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px}
  .card{min-height:150px;padding:14px}
  .stage-bar h2{font-size:14px}
  .gwrap{gap:12px}
}

/* ============================================================
   MOTION — shared animation utilities for the DOM-based games
   ============================================================ */
@keyframes pop      { 0%{transform:scale(1)} 40%{transform:scale(1.16)} 100%{transform:scale(1)} }
@keyframes popIn    { 0%{transform:scale(.2);opacity:0} 70%{transform:scale(1.08)} 100%{transform:scale(1);opacity:1} }
@keyframes shakeX   { 0%,100%{transform:translateX(0)} 20%{transform:translateX(-8px)} 40%{transform:translateX(7px)}
                      60%{transform:translateX(-5px)} 80%{transform:translateX(3px)} }
@keyframes flipIn   { 0%{transform:rotateX(0)} 50%{transform:rotateX(90deg)} 100%{transform:rotateX(0)} }
@keyframes riseIn   { from{transform:translateY(14px);opacity:0} to{transform:translateY(0);opacity:1} }
@keyframes pulseRing{ 0%{box-shadow:0 0 0 0 rgba(0,229,255,.55)} 100%{box-shadow:0 0 0 18px rgba(0,229,255,0)} }
@keyframes floatUp  { from{transform:translateY(0);opacity:1} to{transform:translateY(-42px);opacity:0} }
@keyframes glowPulse{ 0%,100%{filter:brightness(1)} 50%{filter:brightness(1.45)} }

.anim-pop   { animation:pop .22s ease-out }
.anim-popin { animation:popIn .2s cubic-bezier(.2,1.5,.4,1) }
.anim-shake { animation:shakeX .4s ease }
.anim-rise  { animation:riseIn .28s ease-out both }

.stage-body{ animation:riseIn .26s ease-out }
.gover{ animation:popIn .26s cubic-bezier(.2,1.3,.4,1) }
.card{ animation:riseIn .3s ease-out both }

/* floating +score text used by DOM games */
.fx-float{
  position:absolute;pointer-events:none;font-weight:800;font-size:20px;z-index:6;
  animation:floatUp .8s ease-out forwards;text-shadow:0 0 14px currentColor;
}

/* --- 2048: absolutely positioned, transform-animated tiles --- */
.t2048-wrap{position:relative;background:#12122c;border:1px solid var(--line);border-radius:16px;padding:10px}
.t2048-cell{position:absolute;border-radius:11px;background:rgba(255,255,255,.04)}
.t2048-tile{
  position:absolute;border-radius:11px;display:grid;place-items:center;font-weight:800;
  transition:transform .11s cubic-bezier(.3,.9,.4,1);will-change:transform;
  box-shadow:0 6px 18px rgba(0,0,0,.35);
}

/* --- memory: real 3D card flip --- */
.mem-card{perspective:900px;cursor:pointer}
.mem-inner{
  position:relative;width:100%;height:100%;transition:transform .42s cubic-bezier(.3,1.1,.4,1);
  transform-style:preserve-3d;
}
.mem-card.up .mem-inner{transform:rotateY(180deg)}
.mem-face{
  position:absolute;inset:0;backface-visibility:hidden;border-radius:14px;
  display:grid;place-items:center;font-size:38px;border:1px solid rgba(255,255,255,.12);
}
.mem-back{background:linear-gradient(150deg,#8b5cff,#ff2fb9)}
.mem-back::after{content:'';position:absolute;inset:10px;border:2px dashed rgba(255,255,255,.35);border-radius:9px}
.mem-front{background:#1a1a3d;transform:rotateY(180deg)}
.mem-card.done .mem-front{background:rgba(57,255,136,.16);border-color:#39ff88}

/* --- wordle tiles --- */
.wd-tile{
  display:grid;place-items:center;border:2px solid rgba(255,255,255,.14);border-radius:9px;
  font-size:28px;font-weight:800;text-transform:uppercase;transition:border-color .15s, transform .12s;
  will-change:transform;
}
.wd-tile.filled{animation:pop .16s ease-out}
.wd-key{
  cursor:pointer;border:0;border-radius:8px;font-weight:800;font-size:13px;color:#e8e8ff;
  background:rgba(255,255,255,.1);transition:background .25s, color .25s, transform .1s;
}
.wd-key:active{transform:translateY(2px)}

/* --- minesweeper / sudoku cells --- */
.ms-cell{transition:background .16s, transform .1s}
.ms-cell.hidden-cell:hover{background:rgba(255,255,255,.2)}
.ms-reveal{animation:popIn .18s ease-out}
.sd-cell{transition:background .16s, color .16s}

/* --- whack-a-mole --- */
.mole-hole{
  position:relative;overflow:hidden;background:radial-gradient(ellipse at 50% 25%,#0b0b1c,#241a12 70%);
  border:1px solid var(--line);
}
.mole{
  position:absolute;left:0;right:0;bottom:-100%;height:100%;display:grid;place-items:center;
  font-size:56px;transition:bottom .13s cubic-bezier(.3,1.4,.5,1);
}
.mole.up{bottom:0}

/* --- connect four disc drop --- */
@keyframes dropIn{ from{transform:translateY(var(--drop,-320px))} 60%{transform:translateY(6px)} 100%{transform:translateY(0)} }
.c4-disc{animation:dropIn .38s cubic-bezier(.35,.1,.3,1)}

/* --- chess --- */
.chess-sq{transition:background .16s}
.chess-piece{transition:transform .18s cubic-bezier(.3,.9,.4,1);will-change:transform}

/* --- type racer --- */
@keyframes caretBlink{ 0%,55%{border-color:#00e5ff} 56%,100%{border-color:transparent} }
.tr-caret{
  border-bottom:3px solid #00e5ff;border-radius:3px;background:rgba(0,229,255,.14);
  animation:caretBlink 1.05s step-end infinite;color:#e8e8ff;
}
.tr-ok{color:#39ff88}
.tr-bad{color:#0a0a1e;background:#ff4d6d;border-radius:3px}
.tr-todo{color:#6e6e96}
.tr-bar{transition:width .12s linear}

/* --- reaction pad --- */
.rx-pad{transition:background .12s ease, box-shadow .2s ease}
.rx-go{animation:pulseRing .7s ease-out infinite}

/* --- math blitz --- */
.mb-card{transition:box-shadow .2s ease, border-color .2s ease}
.mb-ok{box-shadow:0 0 0 2px #39ff88, 0 0 40px rgba(57,255,136,.35)}
.mb-no{box-shadow:0 0 0 2px #ff4d6d, 0 0 40px rgba(255,77,109,.3)}