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

html, body {
  width: 100%; height: 100%;
  overflow: hidden;
  background: #0a0a1a;
  font-family: 'Courier New', monospace;
  color: #fff;
  -webkit-user-select: none; user-select: none;
  -webkit-touch-callout: none;
  touch-action: none;
}

.back-btn {
  position: fixed; top: 10px; left: 12px; z-index: 1001;
  font-family: 'Courier New', monospace; font-size: 11px; letter-spacing: 2px;
  color: #ff69b480; text-decoration: none;
  border: 1px solid #ff69b430; padding: 4px 10px; border-radius: 4px;
  background: rgba(10,10,26,0.7);
  transition: color 120ms, border-color 120ms;
  touch-action: auto;
}
.back-btn:hover { color: #ff69b4; border-color: #ff69b4; }

.audio-btns { position: fixed; top: 10px; right: 12px; z-index: 1001; display: flex; gap: 6px; touch-action: auto; }
.audio-btn { font-family: 'Courier New', monospace; font-size: 10px; letter-spacing: 2px; color: #ff69b480; border: 1px solid #ff69b430; padding: 4px 8px; border-radius: 4px; background: rgba(10,10,26,0.7); cursor: pointer; touch-action: auto; -webkit-tap-highlight-color: transparent; }
.audio-btn.muted { color: #ff446660; border-color: #ff446630; }

#game-container { position: fixed; inset: 0; }

canvas {
  display: block;
  max-width: 100vw;
  max-height: 100vh;
  border: none;
  box-shadow: 0 0 30px #ff69b440;
  image-rendering: pixelated; image-rendering: crisp-edges;
  cursor: crosshair;
  will-change: transform; transform: translateZ(0);
}

#ui {
  position: fixed;
  left: var(--canvas-left, 0px); width: var(--canvas-width, 100%);
  top: calc(var(--canvas-top, 0px) + var(--canvas-height, 640px) + 2px);
  display: flex; justify-content: space-between;
  padding: 6px 4px;
  font-size: clamp(10px, 1.8vw, 14px); color: #ff69b4; letter-spacing: 2px;
}

/* ── OVERLAYS ─────────────────────────────────────────── */
.overlay {
  display: none; position: fixed; inset: 0;
  align-items: center; justify-content: center;
  background: rgba(10,10,26,0.90);
  z-index: 1000; pointer-events: all; touch-action: auto;
}
.overlay.active { display: flex; }

.overlay-box {
  background: linear-gradient(160deg, #1a1a2e 0%, #0d0d1a 100%);
  border: 2px solid #ff69b4;
  box-shadow: 0 0 40px #ff69b440, inset 0 0 60px #ff69b408;
  border-radius: 12px; padding: 36px 44px;
  text-align: center; max-width: 400px; width: 90%;
  touch-action: auto;
}

.overlay-title {
  font-size: clamp(18px, 4vw, 24px); color: #ff69b4;
  letter-spacing: 4px; margin-bottom: 10px;
  text-shadow: 0 0 20px #ff69b480;
}
.overlay-sub {
  font-size: clamp(13px, 2.4vw, 16px); color: #ff69b499;
  letter-spacing: 2px; margin-bottom: 20px;
}
.how-to {
  background: rgba(255,105,180,0.06); border: 1px solid #ff69b430;
  border-radius: 8px; padding: 14px 18px; margin-bottom: 24px; text-align: left;
}
.how-to p {
  font-size: clamp(12px, 2.2vw, 15px); color: #ff69b4cc;
  letter-spacing: 1px; margin-bottom: 6px;
}
.how-to p:last-child { margin-bottom: 0; }

.final-score {
  font-size: clamp(16px, 3vw, 22px); color: #ff69b4;
  letter-spacing: 3px; margin-bottom: 16px;
  text-shadow: 0 0 16px #ff69b460;
}

.menu-btn {
  display: inline-block; padding: 12px 32px;
  border: 2px solid #ff69b4;
  background: linear-gradient(160deg, #1a1a2e 0%, #0d0d1a 100%);
  color: #ff69b4; font-family: 'Courier New', monospace;
  font-size: clamp(11px, 2vw, 14px); letter-spacing: 3px;
  cursor: pointer; border-radius: 6px;
  box-shadow: 0 0 16px #ff69b450, inset 0 2px 0 #ff69b420;
  transition: transform 80ms, box-shadow 80ms, background 80ms;
  -webkit-tap-highlight-color: transparent; touch-action: auto;
}
.menu-btn:hover {
  background: linear-gradient(160deg, #2a1a3e 0%, #150d2a 100%);
  box-shadow: 0 0 28px #ff69b470, inset 0 2px 0 #ff69b430;
}
.menu-btn:active { transform: translateY(2px) scale(0.97); }

.menu-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  box-shadow: none;
  animation: loading-pulse 1s ease-in-out infinite;
}

@keyframes loading-pulse {
  0%, 100% { opacity: 0.45; }
  50%       { opacity: 0.25; }
}

/* High scores */
.hs-table { width: 100%; border-collapse: collapse; margin-top: 14px; }
.hs-title { font-size: 11px; letter-spacing: 4px; color: #ff69b4; padding-bottom: 8px; text-align: center; border-bottom: 1px solid #ff69b430; }
.hs-row { font-size: 11px; letter-spacing: 1px; color: #ff69b4bb; border-bottom: 1px solid #ff69b415; }
.hs-row td { padding: 5px 4px; }
.hs-rank { width: 28px; text-align: center; }
.hs-score { text-align: right; font-weight: bold; padding-right: 8px; }
.hs-spacer { width: 16px; }
.hs-date { text-align: right; opacity: 0.55; font-size: 0.9em; }
.hs-empty { font-size: 11px; color: #ff69b460; letter-spacing: 2px; text-align: center; padding: 10px 0; }

/* HUD drawn on canvas */
#ui { display: none !important; }
/* ── MOBILE: iPhone / small screens ──────────────────── */
@media (max-width: 500px) {
  .overlay-box {
    padding: 24px 20px;
  }

  .overlay-sub {
    font-size: 11px;
    margin-bottom: 14px;
  }

  .how-to {
    padding: 10px 12px;
    margin-bottom: 16px;
  }

  .how-to p {
    font-size: 11px;
    margin-bottom: 4px;
  }

  .menu-btn {
    padding: 10px 24px;
    font-size: 11px;
  }
}