/* ============================================
   Parallax Runner — Game Styles
   ============================================ */

/* --- Game Page Layout --- */
.game-page {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 100vh;
  padding: 0 16px;
}

/* --- HUD --- */
.hud {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  width: 100%;
  max-width: 800px;
  padding: 0 16px 12px;
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  text-transform: uppercase;
}

.hud__score {
  color: var(--color-accent-cyan);
  text-align: left;
}

.hud__layer {
  color: var(--color-accent-pink);
  text-align: center;
}

.hud__high {
  color: var(--color-accent-purple);
  text-align: right;
}

/* --- Canvas Wrapper --- */
.canvas-wrap {
  position: relative;
  width: 100%;
  max-width: 800px;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-card);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: #050810;
}

#game-canvas {
  display: block;
  width: 100%;
  height: 100%;
}

/* --- Overlays --- */
.overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
  transition: opacity 0.4s ease;
}

.overlay--visible {
  opacity: 1;
  pointer-events: auto;
}

.overlay--hidden {
  opacity: 0;
  pointer-events: none;
}

.overlay__bg {
  position: absolute;
  inset: 0;
  background: rgba(5, 8, 16, 0.85);
  backdrop-filter: blur(6px);
}

.overlay__content {
  position: relative;
  text-align: center;
  padding: 32px;
}

.overlay__title {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 5vw, 2.4rem);
  font-weight: 900;
  letter-spacing: 0.06em;
  background: linear-gradient(135deg, var(--color-accent-cyan), var(--color-accent-pink), var(--color-accent-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 20px;
}

.overlay__subtitle {
  font-size: 1rem;
  color: var(--color-text-muted);
  margin-bottom: 16px;
  font-weight: 300;
  letter-spacing: 0.06em;
}

.overlay__controls {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
  margin-bottom: 24px;
}

.control-hint {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  letter-spacing: 0.04em;
}

.control-hint kbd {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.15);
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 700;
  color: #fff;
  margin: 0 2px;
}

.overlay__prompt {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-text);
  animation: promptPulse 2s ease-in-out infinite;
}

@keyframes promptPulse {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 1; }
}

.overlay__final-label {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 4px;
}

.overlay__final-score {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 8vw, 4rem);
  font-weight: 900;
  background: linear-gradient(135deg, var(--color-accent-cyan), var(--color-accent-pink));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
}

.overlay__high-score {
  font-family: var(--font-display);
  font-size: 0.85rem;
  color: var(--color-accent-purple);
  letter-spacing: 0.1em;
  margin-bottom: 12px;
}

.overlay__new-best {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 900;
  color: var(--color-accent-yellow);
  text-shadow: 0 0 20px rgba(250, 204, 21, 0.6);
  margin-bottom: 16px;
  animation: promptPulse 1.5s ease-in-out infinite;
}

/* --- Layer Art (Start Screen) --- */
.overlay__layer-art {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  margin-bottom: 20px;
}

.layer-bar {
  height: 4px;
  border-radius: 2px;
}

.layer-bar--bg {
  width: 120px;
  background: var(--color-accent-purple);
  box-shadow: 0 0 10px rgba(168, 85, 247, 0.5);
  opacity: 0.4;
}

.layer-bar--mid {
  width: 160px;
  background: var(--color-accent-pink);
  box-shadow: 0 0 10px rgba(244, 114, 182, 0.5);
  opacity: 0.7;
}

.layer-bar--fg {
  width: 200px;
  background: var(--color-accent-cyan);
  box-shadow: 0 0 10px rgba(6, 214, 160, 0.5);
  opacity: 1;
}

/* --- Controls Bar (always visible below canvas) --- */
.controls-bar {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 6px;
  padding: 10px 0;
  font-size: 0.7rem;
  color: rgba(193, 203, 216, 0.45);
  letter-spacing: 0.04em;
}

.controls-bar__hint kbd {
  display: inline-block;
  padding: 1px 5px;
  border-radius: 3px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
  font-family: var(--font-display);
  font-size: 0.6rem;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.4);
  margin: 0 1px;
}

.controls-bar__sep {
  color: rgba(255, 255, 255, 0.2);
  margin: 0 2px;
}

@media (max-width: 700px) {
  .canvas-wrap {
    border-radius: 12px;
  }

  .hud {
    gap: 16px;
    font-size: 0.75rem;
  }
}