@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;700;900&display=swap');

*{
  box-sizing:border-box;
  margin:0;
  padding:0;
}

html,
body{
  width:100%;
  height:100%;
  overflow:hidden;
  background:#04050c;
  color:#fff;
  font-family:'Space Grotesk',sans-serif;
  touch-action:none;
}

body{
  display:flex;
  flex-direction:column;
}

.topbar{
  height:60px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:0 14px;
  background:rgba(0,0,0,.6);
  border-bottom:1px solid rgba(255,255,255,.08);
}

.title{
  font-size:1.1rem;
  font-weight:900;
  letter-spacing:2px;
}

.topbtn{
  border:none;
  background:#151c2f;
  color:#fff;
  padding:10px 14px;
  border-radius:14px;
  text-decoration:none;
  font-weight:800;
}

.hud{
  height:44px;
  display:flex;
  align-items:center;
  justify-content:space-around;
  background:#0b1020;
  border-bottom:1px solid rgba(255,255,255,.08);
  font-weight:800;
}

.game-wrap{
  flex:1;
  position:relative;
}

canvas{
  width:100%;
  height:100%;
  display:block;
  background:
    radial-gradient(circle at center,#101933 0%,#04050c 80%);
}

.overlay{
  position:fixed;
  inset:0;
  background:rgba(0,0,0,.86);
  backdrop-filter:blur(12px);
  display:none;
  align-items:center;
  justify-content:center;
  z-index:9999;
  padding:20px;
}

.overlay.show{
  display:flex;
}

.card{
  width:min(420px,100%);
  background:#111827;
  border:1px solid rgba(255,255,255,.08);
  border-radius:28px;
  padding:26px;
  text-align:center;
  box-shadow:0 30px 80px rgba(0,0,0,.55);
}

.card h1{
  margin-bottom:14px;
  font-size:2rem;
  font-weight:900;
}

.card p{
  opacity:.82;
  line-height:1.5;
  margin-bottom:18px;
}

.controls{
  display:grid;
  gap:10px;
  margin-bottom:18px;
}

.card button,
.menuBtn{
  width:100%;
  border:none;
  background:linear-gradient(135deg,#29f2d4,#7c5cff);
  color:#081018;
  padding:14px;
  border-radius:18px;
  font-weight:900;
  margin-top:12px;
  text-decoration:none;
  display:block;
}

@media (max-width:700px){

  .topbar{
    height:56px;
  }

  .title{
    font-size:.95rem;
  }

  .topbtn{
    padding:8px 10px;
    font-size:.82rem;
  }

}

.top-actions{
  display:flex;
  gap:8px;
  align-items:center;
}

.overlay{
  background:
    radial-gradient(circle at 18% 22%,rgba(41,242,212,.16),transparent 26%),
    radial-gradient(circle at 78% 28%,rgba(255,60,155,.14),transparent 28%),
    radial-gradient(circle at 50% 80%,rgba(124,92,255,.18),transparent 36%),
    rgba(0,0,0,.78);
}

.overlay::before{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:
    radial-gradient(circle,rgba(255,255,255,.85) 0 1px,transparent 1.5px),
    radial-gradient(circle,rgba(41,242,212,.6) 0 1px,transparent 1.6px),
    radial-gradient(circle,rgba(255,60,155,.45) 0 1px,transparent 1.6px);
  background-size:38px 38px,64px 64px,91px 91px;
  
  opacity:.38;
}

.card{
  position:relative;
  z-index:1;
}

.card button,
.menuBtn{
  font-size:1rem;
  line-height:1.2;
  text-align:center;
}

.overlay{
  background:rgba(0,0,0,.58);
}

.overlay::before{
  display:none !important;
}

.card{
  background:rgba(10,16,34,.82);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
}