/* FactLoader — Duolingo-style lazy loading overlay with networking facts */
.fact-loader {
  position: fixed;
  inset: 0;
  z-index: 3000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px 24px;
  background: rgba(250, 247, 242, 0.94);
  backdrop-filter: blur(6px);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.35s ease, visibility 0.35s ease;
}

.fact-loader.is-visible {
  opacity: 1;
  visibility: visible;
}

.fact-loader[hidden] {
  display: none !important;
}

.fact-loader__pulse {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--lavender-light);
  overflow: hidden;
}

.fact-loader__pulse-bar {
  display: block;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    var(--lavender-soft) 0%,
    var(--lavender-deep) 50%,
    var(--lavender-soft) 100%
  );
  transform-origin: left center;
  animation: fact-loader-pulse 1.8s ease-in-out infinite;
}

.fact-loader__content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 28px;
  max-width: 26rem;
  width: 100%;
}

.fact-loader__logo {
  display: block;
  width: min(200px, 72vw);
  height: auto;
  object-fit: contain;
}

.fact-loader__card {
  width: 100%;
  text-align: center;
}

.fact-loader__label {
  display: block;
  margin: 0 0 14px;
  font-family: 'DM Sans', system-ui, sans-serif;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-soft);
}

.fact-loader__fact {
  margin: 0;
  font-family: 'DM Serif Display', Georgia, serif;
  font-size: clamp(1.35rem, 4.5vw, 1.75rem);
  font-weight: 400;
  line-height: 1.45;
  color: var(--charcoal);
}

body.fact-loader-active {
  overflow: hidden;
}

@keyframes fact-loader-pulse {
  0%,
  100% {
    transform: scaleX(0.12);
    opacity: 0.45;
  }
  50% {
    transform: scaleX(0.92);
    opacity: 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .fact-loader {
    transition: none;
  }

  .fact-loader__pulse-bar {
    animation: none;
    transform: scaleX(0.5);
    opacity: 0.75;
  }
}