/* ---- Flappy Nug — THE OVEN RELIGHT edition (js/flappy.js) ----------------------
   Biome sky + parallax, the character bird rig, tinted nugget towers, power-up
   tokens, sauce drips, and the run-over medal card. Biome colors ride two CSS
   vars set from JS: --fpipe (tower tint) and --fhue (parallax silhouette). */

/* Biome sky behind everything (below pipes). Gradient set + transitioned in JS. */
.flappy-sky {
  position: fixed;
  inset: 0;
  z-index: 9995;
  display: none;
  overflow: hidden;
  pointer-events: none;
}
.flappy-sky.active { display: block; }
.fp-far, .fp-near {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 220%;
  will-change: transform;
  pointer-events: none;
}
.fp-far {
  height: 40%;
  opacity: 0.45;
  background: radial-gradient(70px 68px at 70px 100%, var(--fhue, #444) 60%, transparent 62%) repeat-x;
  background-size: 400px 100%;
}
.fp-near {
  height: 24%;
  opacity: 0.85;
  background: radial-gradient(95px 78px at 95px 100%, var(--fhue, #333) 60%, transparent 62%) repeat-x;
  background-size: 300px 100%;
  filter: brightness(0.68);
}
.fp-flash { position: absolute; inset: 0; background: #e4ecff; opacity: 0; pointer-events: none; }
.fp-flash.zap { animation: fpZap 0.55s ease-out; }
@keyframes fpZap {
  0% { opacity: 0; } 8% { opacity: 0.75; } 20% { opacity: 0.12; }
  32% { opacity: 0.5; } 100% { opacity: 0; }
}

/* The bird — an SVG rig injected by JS (wings, panic eyes, sauce streak). */
.flappy-bird {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 9998;
  width: 52px;
  height: 52px;
  display: none;
  pointer-events: none;
  will-change: transform;
  filter: drop-shadow(0 6px 14px rgba(0, 0, 0, 0.5));
}
.flappy-bird.active { display: block; }
.fb-wing { transform-origin: -6px 4px; transition: transform 0.02s linear; }

/* Nugget towers, tinted per biome via background-blend. */
.flappy-pipe {
  position: fixed;
  top: 0;
  left: 0;
  width: 66px;
  z-index: 9997;
  pointer-events: none;
  will-change: transform, height;
  background: var(--fpipe, #e8a13a) url('../nugget.png');
  background-size: 46px 46px;
  background-blend-mode: multiply;
  border-radius: 6px;
  box-shadow: inset 0 0 0 2px rgba(0, 0, 0, 0.22), 0 0 12px rgba(0, 0, 0, 0.42);
}
.flappy-pipe.cap-bottom {
  border-bottom: 5px solid rgba(255, 255, 255, 0.5);
  border-bottom-left-radius: 11px;
  border-bottom-right-radius: 11px;
}
.flappy-pipe.cap-top {
  border-top: 5px solid rgba(255, 255, 255, 0.5);
  border-top-left-radius: 11px;
  border-top-right-radius: 11px;
}
.flappy-pipe.golden {
  background-color: #f6c944;
  box-shadow: inset 0 0 0 2px rgba(120, 80, 0, 0.3), 0 0 20px rgba(255, 200, 40, 0.85);
}

/* Power-up token floating in a gap. */
.flappy-token {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 9998;
  font-size: 30px;
  line-height: 1;
  pointer-events: none;
  will-change: transform;
  transform: translate(-9999px, -9999px);
  filter: drop-shadow(0 0 8px rgba(255, 240, 180, 0.9));
  animation: ftPulse 1.1s ease-in-out infinite;
}
@keyframes ftPulse { 0%, 100% { filter: drop-shadow(0 0 6px rgba(255, 240, 180, 0.6)); } 50% { filter: drop-shadow(0 0 14px rgba(255, 240, 180, 1)); } }

/* Falling sauce drip hazard (Caverns / Storm). */
.flappy-drip {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 9997;
  width: 16px;
  height: 22px;
  pointer-events: none;
  will-change: transform;
  transform: translate(-9999px, -9999px);
  border-radius: 50% 50% 50% 50% / 62% 62% 38% 38%;
  background: radial-gradient(circle at 40% 30%, #ff8f6a, #c0304a 70%);
  box-shadow: 0 0 8px rgba(200, 40, 60, 0.6);
}

/* Run-over medal card. pointer-events off so a flap taps straight through to restart. */
.flappy-over {
  position: fixed;
  inset: 0;
  z-index: 10040;
  display: none;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}
.flappy-over.on { display: flex; }
.fo-card {
  text-align: center;
  background: rgba(8, 12, 24, 0.74);
  backdrop-filter: blur(3px);
  border: 1px solid var(--border, rgba(148, 163, 184, 0.3));
  border-radius: 1.2rem;
  padding: 1.3rem 2rem;
  box-shadow: 0 22px 60px -20px rgba(0, 0, 0, 0.85);
  animation: foIn 0.3s ease-out both;
}
@keyframes foIn { from { opacity: 0; transform: scale(0.9); } to { opacity: 1; transform: scale(1); } }
.fo-medal { font-size: 3rem; line-height: 1; }
.fo-title { font-weight: 900; font-size: 1.3rem; letter-spacing: 0.03em; color: #f8fafc; margin-top: 0.2rem; }
.fo-stat { opacity: 0.85; margin-top: 0.4rem; }
.fo-best { opacity: 0.6; font-size: 0.8rem; margin-top: 0.2rem; }
.fo-go { margin-top: 0.8rem; font-size: 0.78rem; opacity: 0.75; color: var(--accent, #f59e0b); }