:root {
  --bg: #0b0d10;
  --fg: #f2f5f7;
  --muted: #a9b1b8;
  --accent: #7c93ff;
}

* { box-sizing: border-box; }
html, body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  color: var(--fg);
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
}

/* Fullscreen canvas */
#stage {
  display: block;
  width: 100vw;
  height: 100dvh; /* iOS Safari dynamic viewport */
  touch-action: none; /* prevent scroll/zoom during drawing */
  cursor: crosshair;
}

#hud {
  display: none !important;
}

#hud .status {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 12px;
  padding: 8px 12px;
  font-weight: 600;
  letter-spacing: 0.2px;
}

#hud .hint {
  color: var(--muted);
  font-size: 12px;
  text-align: center;
}

/* pattern panel removed */





#overlay {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
  z-index: 10;
  cursor: default;
}

#overlay .overlay-inner {
  color: #ffffff;
  font-weight: 600;
  font-size: clamp(18px, 4vw, 26px);
  letter-spacing: 0.5px;
  line-height: 1.5;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

/* Pastel rainbow keywords matching in-game TRACK_COLORS */
#overlay .overlay-inner .c-red { color: #ff9aa2; }    /* pastel red   (track 1) */
#overlay .overlay-inner .c-orange { color: #ffb482; } /* pastel orange (track 2) */
#overlay .overlay-inner .c-yellow { color: #ffe28a; } /* pastel yellow (track 3) */
#overlay .overlay-inner .c-green { color: #a8e6cf; }  /* pastel green  (track 4) */
#overlay .overlay-inner .c-blue { color: #92c5ff; }   /* pastel blue   (track 5) */

/* Bottom-left icon button (Undo) */
#undoBtn.icon-btn {
  position: fixed;
  left: 16px;
  bottom: calc(16px + env(safe-area-inset-bottom));
  width: 48px;
  height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(255,255,255,0.06);
  color: var(--fg);
  box-shadow: 0 6px 18px rgba(0,0,0,0.35);
  cursor: pointer;
  z-index: 5;
}
#undoBtn.icon-btn:hover {
  background: rgba(255,255,255,0.10);
}
#undoBtn.icon-btn:active {
  transform: translateY(1px);
}

.skip-btn {
  position: fixed;
  left: 50%;
  transform: translateX(-50%);
  bottom: calc(18px + env(safe-area-inset-bottom));
  padding: 10px 16px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.16);
  background: rgba(255,255,255,0.10);
  color: var(--fg);
  font-weight: 600;
  letter-spacing: 0.2px;
  cursor: pointer;
  z-index: 6;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}
.skip-btn:hover {
  background: rgba(255,255,255,0.16);
}
.skip-btn:active {
  transform: translateX(-50%) translateY(1px);
}