.xp-overlay {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 2147483647;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

.xp-overlay__burst {
  position: absolute;
  left: 50%;
  top: 20%;
  transform: translate(-50%, -20%) scale(0.9);
  opacity: 0;
  will-change: transform, opacity, filter;
  pointer-events: none;
}

.xp-overlay__burst.is-animating {
  animation: xp-burst-pop 900ms cubic-bezier(0.2, 0.8, 0.2, 1) forwards;
}

.xp-overlay__label {
  display: block;
  font-size: 28px;
  font-weight: 800;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.35);
}

.xp-overlay__meta {
  display: block;
  margin-top: 4px;
  font-size: 14px;
  font-weight: 600;
  opacity: 0.9;
  text-shadow: 0 1px 6px rgba(0, 0, 0, 0.25);
}

@media (prefers-reduced-motion: reduce) {
  .xp-overlay__burst.is-animating {
    animation-duration: 0ms;
  }
}

@keyframes xp-burst-pop {
  0% {
    transform: translate(-50%, -20%) scale(0.9);
    opacity: 0;
    filter: blur(2px);
  }

  12% {
    transform: translate(-50%, -22%) scale(1.08);
    opacity: 1;
    filter: blur(0);
  }

  45% {
    transform: translate(-50%, -24%) scale(1);
    opacity: 1;
    filter: blur(0);
  }

  100% {
    transform: translate(-50%, -36%) scale(0.98);
    opacity: 0;
    filter: blur(1px);
  }
}

body[data-xp-overlay-debug="1"] .xp-overlay__burst {
  outline: 1px dashed currentColor;
}

.xp-badge,
.xp-badge__link {
  position: relative;
  --boost-frac: 0;
  --boost-hue: 172;
  --boost-glow: rgba(45, 212, 191, 0.4);
  --combo-progress: 0;
  --combo-hue: 48;
  --combo-glow: rgba(251, 191, 36, 0.25);
}

.xp-badge::after,
.xp-badge__link::after {
  content: "";
  position: absolute;
  inset: 3px;
  border-radius: inherit;
  padding: 2px;
  background: conic-gradient(from 270deg, hsla(var(--combo-hue), 95%, 54%, 0.9) calc(var(--combo-progress) * 360deg), transparent calc(var(--combo-progress) * 360deg));
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask-composite: exclude;
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  pointer-events: none;
  opacity: calc(var(--combo-progress));
  z-index: 0;
}

.xp-boost--active {
  box-shadow: 0 0 0 1px hsla(var(--boost-hue), 85%, 72%, 0.6), 0 10px 28px var(--boost-glow);
}

.xp-boost--active::before {
  content: "";
  position: absolute;
  inset: -3px;
  border-radius: inherit;
  padding: 3px;
  background: conic-gradient(from 270deg, hsla(var(--boost-hue), 95%, 68%, 0.85) calc(var(--boost-frac) * 360deg), rgba(15, 23, 42, 0.25) calc(var(--boost-frac) * 360deg));
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask-composite: exclude;
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  pointer-events: none;
  z-index: 0;
}

.xp-combo--sustain {
  box-shadow: 0 0 0 1px hsla(var(--combo-hue), 90%, 60%, 0.6), 0 6px 18px var(--combo-glow);
}

.xp-combo--cooldown {
  filter: saturate(0.9) brightness(0.98);
  opacity: 0.95;
}

.xp-boost-chip {
  position: absolute;
  top: -8px;
  right: -8px;
  min-width: 48px;
  padding: 6px 10px;
  border-radius: 12px;
  background: rgba(15, 118, 110, 0.92);
  color: #ecfeff;
  font: 600 11px/1.1 "Poppins", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  opacity: 0;
  transform: translateY(-4px) scale(0.9);
  transition: opacity 0.18s ease, transform 0.2s ease;
  pointer-events: none;
  box-shadow: 0 6px 18px rgba(13, 148, 136, 0.45);
  z-index: 1;
}

.xp-boost-chip__multiplier {
  letter-spacing: 0.02em;
}

.xp-boost-chip__timer {
  font-weight: 500;
  font-size: 10px;
  opacity: 0.85;
}

.xp-boost--active .xp-boost-chip {
  opacity: 1;
  transform: translateY(0) scale(1);
}