*{
  margin:0;
  padding:0;
  box-sizing:border-box;
  font-family:Arial, sans-serif;
}

body{
  background:linear-gradient(180deg,#050816,#0f172a);
  color:white;
  min-height:100vh;
  display:flex;
  justify-content:center;
  align-items:center;
  overflow:hidden;
}

.screen{
  width:100%;
  max-width:430px;
  padding:20px;
  text-align:center;
}

.card{
  background:rgba(255,255,255,0.06);
  border:1px solid rgba(255,255,255,0.1);
  border-radius:25px;
  padding:25px;
  box-shadow:0 0 25px rgba(0,0,0,0.4);
  backdrop-filter:blur(10px);
}

h1{
  font-size:2rem;
  margin-bottom:18px;
  color:#38bdf8;
  text-shadow:0 0 12px rgba(56,189,248,0.7);
}

p{
  color:#d1d5db;
  margin-bottom:20px;
  line-height:1.5;
}

.btn{
  background:linear-gradient(90deg,#06b6d4,#3b82f6);
  color:white;
  border:none;
  border-radius:14px;
  padding:15px 25px;
  font-size:1.1rem;
  font-weight:bold;
  cursor:pointer;
  width:100%;
  transition:0.2s;
  box-shadow:0 8px 20px rgba(59,130,246,0.4);
}

.btn:active{
  transform:scale(0.96);
}

.topbar{
  display:flex;
  justify-content:space-between;
  align-items:center;
  margin-bottom:18px;
  gap:10px;
}

.info{
  background:rgba(255,255,255,0.08);
  padding:10px 15px;
  border-radius:12px;
  flex:1;
  font-size:0.95rem;
}

.grid{
  display:grid;
  grid-template-columns:repeat(5,1fr);
  gap:10px;
  margin-top:15px;
}

.block{
  aspect-ratio:1/1;
  border-radius:16px;
  background:linear-gradient(180deg,#38bdf8,#2563eb);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:1.6rem;
  font-weight:bold;
  cursor:pointer;
  transition:0.2s;
  box-shadow:inset 0 -4px 0 rgba(0,0,0,0.2);
  user-select:none;
}

.block:hover{
  transform:translateY(-2px);
}

.safe{
  background:linear-gradient(180deg,#22c55e,#15803d);
}

.bomb{
  background:linear-gradient(180deg,#ef4444,#991b1b);
}

.message{
  margin-top:20px;
  font-size:1.2rem;
  font-weight:bold;
  min-height:30px;
}

.hidden{
  display:none;
}

.footer{
  margin-top:20px;
}

@media(max-width:480px){

  h1{
    font-size:1.6rem;
  }

  .block{
    border-radius:12px;
    font-size:1.3rem;
  }

}