:root{
  --bg:#070b1a;--text:#e2e8f0;--dim:#64748b;
  --cyan:#06b6d4;--cyan2:#0891b2;--green:#22c55e;--red:#ef4444;--gold:#facc15;
  --font:"Inter","Cairo",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0}
body{
  min-height:100vh;font-family:var(--font);
  background:var(--bg);color:var(--text);
  -webkit-font-smoothing:antialiased;overflow:hidden;
  background-image:
    radial-gradient(ellipse 70% 50% at 10% 0%,rgba(6,182,212,.12),transparent),
    radial-gradient(ellipse 60% 50% at 90% 100%,rgba(168,85,247,.08),transparent);
}

.home-btn{
  position:fixed;left:14px;top:14px;z-index:70;
  width:44px;height:44px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  font-size:1.3rem;text-decoration:none;
  background:rgba(0,0,0,.5);backdrop-filter:blur(16px);
  transition:transform .15s;
}
.home-btn:hover{transform:scale(1.08)}

.fullscreen{position:fixed;inset:0;z-index:30;display:none;align-items:center;justify-content:center}
.fullscreen.active{display:flex;animation:fadeIn .3s ease}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}

.name-wrap{width:min(440px,94vw)}
.name-hero{text-align:center;padding:20px}
.name-hero .hero-icon{font-size:4rem;animation:float 3s ease-in-out infinite}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}}
.name-hero h1{
  margin:10px 0 4px;font-size:2.2rem;font-weight:900;
  background:linear-gradient(135deg,#06b6d4,#67e8f9,#a5f3fc);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
}
.name-hero p{color:var(--dim);font-size:.9rem}
.name-form{
  display:flex;flex-direction:column;gap:12px;
  background:rgba(0,0,0,.35);backdrop-filter:blur(20px);
  border-radius:20px;padding:20px;
}
.name-form input{
  padding:12px 14px;font-size:1rem;
  border-radius:12px;border:1px solid rgba(71,85,105,.4);
  background:rgba(15,23,42,.8);color:var(--text);width:100%;text-align:center;
}
.name-form input:focus{outline:none;border-color:rgba(6,182,212,.5)}
.rules-hint{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;font-size:.75rem;color:var(--dim)}

.btn{
  border:none;border-radius:14px;padding:12px 28px;
  font-size:.95rem;font-weight:700;color:#fff;cursor:pointer;
  transition:transform .12s,box-shadow .2s,filter .2s;
}
.btn:not(:disabled):hover{transform:translateY(-1px);filter:brightness(1.08)}
.btn--start{
  background:linear-gradient(135deg,#06b6d4,#0891b2);
  box-shadow:0 4px 20px rgba(6,182,212,.35);width:100%;
}
.btn--ghost{background:transparent;border:1px solid rgba(100,116,139,.4);color:#94a3b8}

.game-col{display:flex;flex-direction:column;align-items:center;gap:14px}

.hud{
  display:flex;gap:18px;padding:10px 24px;border-radius:16px;
  background:rgba(0,0,0,.45);backdrop-filter:blur(16px);
  border:1px solid rgba(6,182,212,.12);
  align-items:center;
}
.hud-item{display:flex;flex-direction:column;align-items:center;gap:2px;min-width:64px}
.hud-label{font-size:.65rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--dim)}
.hud-item strong{font-size:1.4rem;font-weight:900;font-variant-numeric:tabular-nums}
.level-hud strong{color:var(--cyan)}

.sound-btn{
  background:none;border:none;font-size:1.2rem;cursor:pointer;
  padding:4px 8px;border-radius:8px;transition:background .15s;
}
.sound-btn:hover{background:rgba(255,255,255,.06)}

.stage-card{
  position:relative;
  width:min(480px,90vw);
  min-height:380px;
  border-radius:24px;
  background:
    radial-gradient(120% 100% at 50% 0%,rgba(6,182,212,.07),transparent 50%),
    rgba(2,6,23,.7);
  backdrop-filter:blur(20px);
  border:1px solid rgba(148,163,184,.15);
  box-shadow:0 16px 48px rgba(2,6,23,.6);
  display:flex;align-items:center;justify-content:center;
  overflow:hidden;
  padding:28px 24px;
}

.phase{display:flex;flex-direction:column;align-items:center;gap:16px;width:100%}
.phase.hidden{display:none!important}

.show-number{
  font-size:3.2rem;font-weight:900;
  letter-spacing:.15em;
  font-variant-numeric:tabular-nums;
  color:var(--cyan);
  text-shadow:0 0 30px rgba(6,182,212,.4);
  min-height:1.2em;
  word-break:break-all;
  text-align:center;
  line-height:1.3;
  user-select:none;
}

.timer-bar-wrap{
  width:80%;max-width:300px;height:5px;border-radius:5px;
  background:rgba(148,163,184,.15);overflow:hidden;
}
.timer-bar{
  height:100%;border-radius:5px;
  background:linear-gradient(90deg,var(--cyan),var(--green));
  transition:width .1s linear;
}

.input-prompt{
  font-size:1rem;color:var(--dim);font-weight:700;
  letter-spacing:.05em;margin-bottom:4px;
}

.input-display{
  font-size:2.4rem;font-weight:900;
  letter-spacing:.12em;
  font-variant-numeric:tabular-nums;
  color:var(--text);
  min-height:1.4em;
  min-width:100px;
  text-align:center;
  border-bottom:2px solid rgba(6,182,212,.4);
  padding-bottom:4px;
  margin-bottom:8px;
  word-break:break-all;
  line-height:1.3;
}

.numpad{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:12px;
  width:min(320px,85vw);
  direction:ltr;
}
.num-btn{
  display:flex;align-items:center;justify-content:center;
  font-size:1.7rem;font-weight:700;
  border-radius:50%;
  border:none;
  background:rgba(30,41,59,.7);
  color:var(--text);
  cursor:pointer;
  transition:transform .08s,background .12s;
  user-select:none;
  -webkit-tap-highlight-color:transparent;
  width:82px;height:82px;
  margin:0 auto;
}
.num-btn:hover{background:rgba(51,65,85,.8)}
.num-btn:active{transform:scale(.9);background:rgba(6,182,212,.2)}
.num-del{
  background:rgba(30,41,59,.4);
  color:var(--dim);font-size:1.4rem;
}
.num-del:hover{background:rgba(51,65,85,.5)}
.num-empty{
  visibility:hidden;pointer-events:none;
}
  visibility:hidden;pointer-events:none;
}

.recall-timer{margin-bottom:6px}
.recall-fill{
  background:linear-gradient(90deg,var(--red),#f97316,var(--gold));
}

.result-icon{font-size:3.5rem;animation:pop-in .35s cubic-bezier(.34,1.56,.64,1)}
@keyframes pop-in{0%{transform:scale(.5);opacity:0}100%{transform:scale(1);opacity:1}}
.result-label{font-size:1.3rem;font-weight:800}
.result-label.correct{color:var(--green)}
.result-label.wrong{color:var(--red)}
.correct-line{font-size:1rem;color:var(--dim);margin-top:4px}
.correct-line.hidden{display:none}
.correct-line span{font-weight:900;color:var(--cyan);letter-spacing:.1em;font-size:1.2rem}

/* LEADERBOARD */
.live-lb{
  position:fixed;right:14px;top:66px;width:320px;z-index:60;
  background:
    radial-gradient(120% 100% at 0% 0%,rgba(6,182,212,.12),transparent 45%),
    radial-gradient(120% 100% at 100% 100%,rgba(168,85,247,.08),transparent 48%),
    rgba(2,6,23,.72);
  backdrop-filter:blur(26px);
  border:1px solid rgba(148,163,184,.2);
  border-radius:20px;padding:14px;
  max-height:85vh;overflow-y:auto;overflow-x:hidden;
  box-shadow:0 20px 46px rgba(2,6,23,.65),inset 0 1px 0 rgba(255,255,255,.06);
  transition:transform .3s cubic-bezier(.4,0,.2,1),opacity .25s ease;
}
.live-lb.lb-hidden{
  transform:translateX(calc(100% + 30px));
  opacity:0;pointer-events:none;
}
.live-lb::before{
  content:"";position:absolute;inset:0;border-radius:20px;
  pointer-events:none;border:1px solid rgba(250,204,21,.14);
}
.live-lb h3{
  margin:0 0 10px;
  display:flex;align-items:center;justify-content:space-between;
  font-size:.78rem;font-weight:900;letter-spacing:.15em;text-transform:uppercase;color:var(--gold);
}
.live-lb h3::after{
  content:"All-Time";font-size:.62rem;letter-spacing:.12em;color:#fde68a;
  border:1px solid rgba(250,204,21,.28);background:rgba(250,204,21,.1);
  border-radius:999px;padding:4px 9px;
}
.lb-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:6px}
.lb-list li{
  display:grid;grid-template-columns:40px 1fr auto;
  align-items:center;gap:8px;
  padding:10px 11px;border-radius:14px;
  border:1px solid rgba(148,163,184,.18);
  background:linear-gradient(135deg,rgba(15,23,42,.78),rgba(30,41,59,.5));
  font-size:.9rem;
  transition:transform .14s ease,border-color .2s ease,box-shadow .2s ease;
}
.lb-list li:hover{transform:translateY(-1px);border-color:rgba(250,204,21,.35);box-shadow:0 10px 18px rgba(2,6,23,.5)}
.lb-list li:first-child{border-color:rgba(250,204,21,.52);background:linear-gradient(135deg,rgba(146,64,14,.36),rgba(120,53,15,.26))}
.lb-list li:nth-child(2){border-color:rgba(203,213,225,.34);background:linear-gradient(135deg,rgba(71,85,105,.35),rgba(51,65,85,.24))}
.lb-list li:nth-child(3){border-color:rgba(253,186,116,.34);background:linear-gradient(135deg,rgba(154,52,18,.3),rgba(124,45,18,.2))}
.lb-list li .rank{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:34px;height:34px;padding:0 6px;border-radius:10px;
  color:#cbd5e1;font-weight:800;font-size:.78rem;
  background:rgba(15,23,42,.74);border:1px solid rgba(148,163,184,.2);
}
.lb-list li .name{font-weight:800;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.lb-list li .val{font-weight:900;color:var(--cyan);font-size:1.04rem;font-variant-numeric:tabular-nums;min-width:28px;text-align:left}
.lb-list li.me{
  border-color:rgba(6,182,212,.55);
  background:linear-gradient(135deg,rgba(8,145,178,.35),rgba(8,145,178,.15));
  box-shadow:0 0 0 1px rgba(6,182,212,.2),0 10px 18px rgba(8,145,178,.2);
}

.lb-toggle{
  position:fixed;right:14px;top:14px;z-index:65;
  background:rgba(0,0,0,.55);backdrop-filter:blur(14px);
  border:1px solid rgba(148,163,184,.3);
  border-radius:12px;width:44px;height:44px;
  display:flex;align-items:center;justify-content:center;
  font-size:1.15rem;cursor:pointer;
  transition:transform .15s,background .2s,box-shadow .2s;
  box-shadow:0 4px 14px rgba(0,0,0,.35);
}
.lb-toggle:hover{transform:scale(1.08);background:rgba(0,0,0,.75);box-shadow:0 6px 20px rgba(0,0,0,.45)}
.lb-toggle.active{background:rgba(6,182,212,.25);border-color:rgba(6,182,212,.45)}

.result-overlay{
  position:fixed;inset:0;z-index:80;
  display:flex;align-items:center;justify-content:center;
  background:rgba(7,11,26,.88);backdrop-filter:blur(12px);
}
.result-overlay.hidden{display:none}
.ro-card{
  text-align:center;padding:36px 32px;border-radius:24px;
  background:rgba(0,0,0,.5);border:1px solid rgba(6,182,212,.2);
  max-width:400px;width:90vw;
  animation:popIn .4s cubic-bezier(.34,1.56,.64,1);
}
@keyframes popIn{0%{transform:scale(.7);opacity:0}100%{transform:scale(1);opacity:1}}
.ro-title{font-size:1.4rem;font-weight:800;margin-bottom:12px}
.ro-level{
  font-size:4.5rem;font-weight:900;
  background:linear-gradient(135deg,#06b6d4,#67e8f9);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
  line-height:1.1;
}
.ro-level-label{font-size:.85rem;color:var(--dim);font-weight:700;letter-spacing:.1em;text-transform:uppercase;margin-bottom:4px}
.ro-digits{font-size:.85rem;color:var(--dim);margin-bottom:8px}
.ro-rank{font-size:.95rem;color:var(--gold);margin-bottom:6px;min-height:1.2em}
.ro-pb{font-size:1rem;color:#fb923c;font-weight:800;margin-bottom:12px;animation:pulse-text .5s ease-in-out infinite alternate}
@keyframes pulse-text{from{opacity:.6;transform:scale(.95)}to{opacity:1;transform:scale(1.05)}}
.ro-btns{display:flex;flex-direction:column;gap:10px;margin-top:8px}

.hidden{display:none!important}

@media(max-width:700px){
  .live-lb{
    top:auto;bottom:0;right:0;left:0;width:100%;
    border-radius:16px 16px 0 0;max-height:32vh;padding:10px 12px;
  }
  .live-lb::before{border-radius:16px 16px 0 0}
  .stage-card{min-height:340px;padding:20px 16px}
  .show-number{font-size:2.4rem}
  .input-display{font-size:1.8rem}
  .numpad{width:min(290px,88vw);gap:10px}
  .num-btn{width:72px;height:72px;font-size:1.5rem}
  .hud{gap:10px;padding:8px 14px}
  .hud-item strong{font-size:1.1rem}
}