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

:root {
  --bg: #0d0d1a;
  --surface: #12122a;
  --border: #1e1e3f;
  --text: #e0e0ff;
  --muted: #5a5a8a;
  --accent: #7c5cfc;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Courier New', Courier, monospace;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

#app {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

/* ── Game canvas ───────────────────────────────────── */

#game-area {
  border: 2px solid var(--border);
  box-shadow: 0 0 30px rgba(124, 92, 252, 0.15);
}

#game-canvas {
  display: block;
}

/* ── Side panels ───────────────────────────────────── */

#left-panel,
#right-panel {
  display: flex;
  flex-direction: column;
  gap: 12px;
  width: 140px;
}

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 10px 12px;
}

.label {
  font-size: 10px;
  letter-spacing: 2px;
  color: var(--muted);
  margin-bottom: 8px;
  text-transform: uppercase;
}

.stat {
  font-size: 22px;
  font-weight: bold;
  color: var(--accent);
  letter-spacing: 1px;
}

canvas#hold-canvas,
canvas#next-canvas {
  display: block;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  width: 100%;
  height: auto;
}

/* ── Controls list ─────────────────────────────────── */

.controls {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.controls span {
  font-size: 11px;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 6px;
}

kbd {
  background: var(--border);
  color: var(--text);
  border-radius: 3px;
  padding: 1px 5px;
  font-size: 10px;
  font-family: inherit;
  white-space: nowrap;
}

/* ── Mobile ────────────────────────────────────────── */

@media (max-width: 600px) {
  body {
    align-items: flex-start;
    padding: 8px;
  }

  #app {
    gap: 8px;
    transform-origin: top center;
  }

  #left-panel {
    display: none;
  }

  #right-panel {
    width: 90px;
  }

  .stat {
    font-size: 16px;
  }

  .panel {
    padding: 6px 8px;
  }

  .label {
    font-size: 9px;
  }
}