:root {
  --bg: #0b0e14;
  --accent: #39ffc8;
  --glass-bg: rgba(11, 14, 20, 0.72);
  --glass-border: rgba(255, 255, 255, 0.12);
  --text: #eef6f2;
  --text-dim: rgba(238, 246, 242, 0.68);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  overflow: hidden;
  overscroll-behavior: none;
  touch-action: none;
}

#game {
  position: relative;
  width: 100vw;
  height: 100dvh;
  height: 100vh;
  background: var(--bg);
}

#scene {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

#flash {
  position: absolute;
  inset: 0;
  background: #ff2b2b;
  opacity: 0;
  pointer-events: none;
  z-index: 40;
}

.glass {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 10px;
  backdrop-filter: blur(6px);
}

#hud {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 20;
}

#readouts {
  position: absolute;
  top: max(12px, env(safe-area-inset-top));
  left: 12px;
  display: flex;
  align-items: baseline;
  gap: 6px;
  padding: 8px 14px;
  font-size: 13px;
  letter-spacing: 0.04em;
}
#readouts .label { color: var(--text-dim); font-size: 11px; }
#readouts strong { font-size: 16px; font-variant-numeric: tabular-nums; color: var(--accent); }
#readouts .divider { width: 1px; height: 16px; background: var(--glass-border); margin: 0 4px; }

#pause-button {
  position: absolute;
  top: max(12px, env(safe-area-inset-top));
  right: 12px;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
  color: var(--text);
  font-size: 16px;
  pointer-events: auto;
  cursor: pointer;
  z-index: 25;
}

#desktop-hint {
  position: absolute;
  bottom: max(12px, env(safe-area-inset-bottom));
  left: 50%;
  transform: translateX(-50%);
  display: none;
  gap: 14px;
  padding: 8px 16px;
  font-size: 11.5px;
  color: var(--text-dim);
  white-space: nowrap;
}
#desktop-hint b { color: var(--accent); }

#ftue-cue {
  position: absolute;
  top: 64px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 12.5px;
  color: var(--text-dim);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 8px;
  padding: 6px 12px;
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
  display: flex;
  align-items: center;
  gap: 8px;
}
#ftue-cue .hand { display: inline-block; animation: ftue-tap 1s ease-in-out infinite; }
@keyframes ftue-tap {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(3px) scale(0.9); }
}

#level-toast {
  position: absolute;
  top: 96px;
  left: 50%;
  transform: translateX(-50%) translateY(-8px);
  padding: 8px 18px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 10px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  opacity: 0;
  transition: opacity 0.2s ease, transform 0.2s ease;
  pointer-events: none;
}
#level-toast.visible { opacity: 1; transform: translateX(-50%) translateY(0); }

.overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(4, 6, 9, 0.74);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
  z-index: 30;
}
.overlay.visible { opacity: 1; pointer-events: auto; }

.card {
  width: min(420px, 88vw);
  padding: 26px 24px;
  border-radius: 16px;
  background: linear-gradient(180deg, rgba(20, 26, 33, 0.96), rgba(11, 14, 20, 0.96));
  border: 1px solid var(--glass-border);
  text-align: center;
}
.card.compact { padding: 20px; }
.eyebrow { margin: 0 0 4px; font-size: 11px; letter-spacing: 0.12em; color: var(--accent); }
.card h1 { margin: 0 0 10px; font-size: 26px; }
.card h2 { margin: 0 0 10px; font-size: 20px; }
.objective { color: var(--text-dim); font-size: 13.5px; line-height: 1.5; margin: 0 0 16px; }
.controls-grid { display: grid; gap: 8px; text-align: left; margin-bottom: 18px; }
.controls-grid div { display: flex; justify-content: space-between; gap: 12px; font-size: 12.5px; }
.controls-grid b { color: var(--accent); white-space: nowrap; }
.controls-grid span:last-child { color: var(--text-dim); text-align: right; }
.actions { display: flex; justify-content: center; }
#play-button, #retry-button {
  padding: 12px 26px;
  border-radius: 999px;
  border: none;
  background: var(--accent);
  color: #06110d;
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.04em;
  cursor: pointer;
}
.hint { margin: 14px 0 0; font-size: 11.5px; color: var(--text-dim); }
#fail-overlay p { color: var(--text-dim); font-size: 13px; }
#fail-overlay strong { color: var(--text); font-size: 16px; }

@media (max-width: 480px) {
  #desktop-hint { display: none !important; }
}