:root{
  --bg1: #03030a;
  --bg2: #061028;
  --accent: #00f7ff;
  --accent2: #7b59ff;
  --glass: rgba(255,255,255,0.04);
  --neon: 0 0 18px rgba(0,247,255,0.15), 0 0 40px rgba(123,89,255,0.08);
}

*{box-sizing:border-box;margin:0;padding:0;font-family:Inter, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;}
html, body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  overflow: hidden; /* Impede scroll e recortes estranhos no mobile */
  touch-action: none;
}

body{
  min-height:100vh;
  background: radial-gradient(circle at 10% 10%, #061028 0%, #020214 35%, #000 100%);
  color:#cfefff;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:12px;
  padding:12px;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}

/* Top UI */
.ui-top{
  width:100%;
  max-width:920px;
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:12px;
}
.title{
  font-size:1.05rem;
  letter-spacing:1px;
  color:var(--accent);
  text-shadow: 0 0 8px rgba(0,247,255,0.25);
}

/* Buttons */
.controls-row { display:flex; gap:8px; }
.btn{
  background: linear-gradient(180deg, rgba(255,255,255,0.04), rgba(255,255,255,0.02));
  border:1px solid rgba(255,255,255,0.06);
  padding:8px 12px;
  color:#dffaff;
  border-radius:10px;
  cursor:pointer;
  box-shadow: var(--neon);
  backdrop-filter: blur(6px);
}
.btn:active{ transform: translateY(1px); }

/* Game wrapper */
.game-wrap{
  width:100%;
  max-width:920px;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:8px;
}

/* Canvas styles */
/* Canvas totalmente centralizado e sem distorção */
canvas {
  display: block;
  margin: auto;
  max-width: 100vw;
  max-height: 100vh;
  width: 100%;
  height: auto;

  background:
    linear-gradient(180deg, rgba(0,0,0,0.35), rgba(0,0,0,0.15)),
    radial-gradient(500px 200px at 50% 10%, rgba(0,120,160,0.06), transparent 20%),
    transparent;

  border-radius: 12px;
  box-shadow: 0 12px 40px rgba(0,0,0,0.7), 0 0 40px rgba(123,89,255,0.06);
}


/* HUD */
.hud{
  width:100%;
  max-width:920px;
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding:6px 10px;
}
.score{
  font-size:0.95rem;
  color:#e6ffff;
  background: linear-gradient(90deg, rgba(0,0,0,0.25), rgba(255,255,255,0.02));
  border-radius:8px;
  padding:6px 10px;
  border:1px solid rgba(255,255,255,0.03);
  box-shadow: 0 6px 22px rgba(0,0,0,0.5);
}

/* touch hint */
.touch-hint{
  font-size:0.85rem;
  color:rgba(200,255,255,0.7);
  opacity:0.9;
}

/* Mobile adjustments */
@media (max-width:600px){
  .title{ font-size:0.95rem; }
  .btn{ padding:7px 10px; font-size:0.95rem; }
  .hud{ font-size:0.9rem; }
}

/* Futuristic lines overlay (subtle) */
body::after{
  content:'';
  position:fixed;
  inset:0;
  pointer-events:none;
  background-image:
    linear-gradient(90deg, rgba(255,255,255,0.01) 1px, transparent 1px),
    linear-gradient(0deg, rgba(255,255,255,0.01) 1px, transparent 1px);
  background-size: 240px 240px, 240px 240px;
  opacity:0.6;
  mix-blend-mode:overlay;
}