/**
 * MiDiT shared fullscreen loader / splash
 * Depends on midit-tokens.css when available; has safe fallbacks.
 */
.midit-loader {
  --ml-ink: var(--midit-ink-night, #eaf2ff);
  --ml-muted: var(--midit-muted-night, #9bb0cc);
  --ml-accent: var(--midit-accent, #3d9cf0);
  --ml-glow: var(--midit-glow, rgba(61, 156, 240, 0.35));
  --ml-bg0: var(--midit-bg-night-0, #070b14);
  --ml-bg1: var(--midit-bg-night-1, #0d1524);

  position: fixed;
  inset: 0;
  z-index: 99999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  color: var(--ml-ink);
  font-family: var(--font-body, "Outfit", "Segoe UI", sans-serif);
  background:
    radial-gradient(900px 520px at 12% -8%, rgba(31, 111, 196, 0.38), transparent 58%),
    radial-gradient(700px 420px at 92% 8%, rgba(61, 156, 240, 0.14), transparent 52%),
    linear-gradient(165deg, var(--ml-bg0) 0%, var(--ml-bg1) 48%, #0a101c 100%);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.2s ease, visibility 0.2s ease;
}

.midit-loader.is-visible {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.midit-loader--static {
  position: absolute;
  opacity: 1;
  visibility: visible;
  pointer-events: none;
  transition: none;
}

.midit-loader--light {
  --ml-ink: var(--midit-ink-light, #1a2330);
  --ml-muted: var(--midit-muted-light, #5a6b82);
  --ml-accent: var(--midit-blue, #1f6fc4);
  --ml-bg0: var(--midit-bg-light-0, #f4f7fb);
  --ml-bg1: var(--midit-bg-light-1, #e8eef6);
  background:
    radial-gradient(800px 480px at 15% -10%, rgba(31, 111, 196, 0.18), transparent 55%),
    radial-gradient(600px 400px at 90% 0%, rgba(61, 156, 240, 0.12), transparent 50%),
    linear-gradient(165deg, var(--ml-bg0) 0%, var(--ml-bg1) 100%);
}

.midit-loader__card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 0.85rem;
  max-width: 22rem;
  animation: midit-loader-rise 0.45s ease both;
}

.midit-loader__mark {
  width: 72px;
  height: 72px;
  object-fit: contain;
  filter: drop-shadow(0 0 20px var(--ml-glow));
  animation: midit-loader-float 4.5s ease-in-out infinite;
}

.midit-loader__title {
  margin: 0;
  font-family: var(--font-display, "Sora", "Segoe UI", sans-serif);
  font-weight: 650;
  font-size: 1.35rem;
  letter-spacing: 0.02em;
  color: var(--ml-ink);
}

.midit-loader__subtitle {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.45;
  color: var(--ml-muted);
}

.midit-loader__spinner {
  width: 28px;
  height: 28px;
  margin-top: 0.35rem;
  border: 2.5px solid rgba(61, 156, 240, 0.22);
  border-top-color: var(--ml-accent);
  border-radius: 50%;
  animation: midit-loader-spin 0.75s linear infinite;
}

.midit-loader--light .midit-loader__spinner {
  border-color: rgba(31, 111, 196, 0.2);
  border-top-color: var(--ml-accent);
}

@keyframes midit-loader-spin {
  to { transform: rotate(360deg); }
}

@keyframes midit-loader-rise {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes midit-loader-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

@media (prefers-reduced-motion: reduce) {
  .midit-loader__mark,
  .midit-loader__spinner,
  .midit-loader__card {
    animation: none;
  }
}