:root {
  --primary: #2563eb;
  --bg-dark: #050505;
  --text: #ffffff;
  --panel: #101010;
  --panel-border: #262626;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(circle at 20% 15%, #161616 0, #090909 52%, var(--bg-dark) 100%);
  color: var(--text);
  font-family: 'Courier New', monospace;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 72px 16px 24px;
  touch-action: manipulation;
}
.screen {
  width: min(860px, 100%);
}
.hidden {
  display: none;
}
.card {
  border: 3px solid #0c0c0c;
  background: rgba(255, 255, 255, 0.94);
  border-radius: 16px;
  box-shadow: 0 16px 0 #0c0c0c;
  color: #0c0c0c;
  padding: 24px;
  text-align: center;
}
.card h1,
.card h2 {
  margin: 0 0 12px;
  color: var(--primary);
  text-transform: uppercase;
  text-shadow: 2px 2px #0c0c0c;
}
.card p {
  margin: 0 0 16px;
  font-weight: 700;
}
button {
  background: #2563eb;
  color: #ffffff;
  border: 3px solid #0c0c0c;
  font-weight: 700;
  cursor: pointer;
  padding: 12px 24px;
  font-size: 1rem;
  border-radius: 8px;
  font-family: inherit;
  box-shadow: 4px 4px 0 #0c0c0c;
  text-transform: uppercase;
}
button:active {
  transform: translate(4px, 4px);
  box-shadow: none;
}
.game-layout {
  display: grid;
  grid-template-columns: auto 180px;
  gap: 14px;
  align-items: start;
  justify-content: center;
}
#gameCanvas {
  background: #050505;
  border: 3px solid #0c0c0c;
  border-radius: 12px;
  box-shadow: 0 12px 0 #0c0c0c;
  max-width: 100%;
  height: auto;
}
.sidebar {
  display: grid;
  gap: 10px;
}
.panel {
  background: var(--panel);
  border: 2px solid var(--panel-border);
  border-radius: 12px;
  padding: 10px;
  text-align: center;
}
.label {
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: #7d7d7d;
  margin-bottom: 4px;
}
#bestScore,
#level,
#score {
  color: var(--primary);
  font-size: 1.6rem;
  font-weight: 700;
  line-height: 1.1;
}
#nextCanvas {
  border: 1px solid #2f2f2f;
  border-radius: 8px;
  background: #060606;
}
#mobileControls {
  display: none;
  justify-content: center;
  gap: 8px;
  padding: 12px;
  flex-wrap: wrap;
}
.ctrl-btn {
  width: 56px;
  height: 56px;
  font-size: 1.4rem;
  background: #2563eb;
  color: #ffffff;
  border: 3px solid #0c0c0c;
  border-radius: 8px;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 3px 3px 0 #0c0c0c;
  font-family: inherit;
  padding: 0;
  text-transform: none;
}
.ctrl-btn:active {
  transform: translate(3px, 3px);
  box-shadow: none;
}
@media (max-width: 900px) {
  body {
    align-items: center;
    padding-top: 72px;
    padding-bottom: 72px;
  }
  .game-layout {
    grid-template-columns: 1fr;
    justify-items: center;
  }
  .sidebar {
    width: min(420px, 100%);
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .panel {
    min-height: 96px;
    display: flex;
    flex-direction: column;
    justify-content: center;
  }
  #mobileControls {
    display: flex;
  }
}
@media (max-width: 520px) {
  body {
    padding-inline: 8px;
  }
  .screen {
    width: 100%;
  }
  .sidebar {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
  }
  .card {
    padding: 20px 14px;
  }
  #gameCanvas {
    width: min(96vw, 420px);
  }
}