/* ── Loading screen ─────────────────────────────────────────────── */

#loading-screen {
  position: fixed;
  inset: 0;
  z-index: 1500;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg);
  transition: opacity 0.45s ease, visibility 0.45s ease;
}

#loading-screen.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

/* The same blue square that marks every section heading, breathing */
.loader-inner {
  width: 14px;
  height: 14px;
  background: var(--color-accent);
  animation: loader-pulse 1.25s cubic-bezier(0.45, 0, 0.35, 1) infinite;
}

@keyframes loader-pulse {
  0%   { transform: scale(0.55); opacity: 0.35; }
  50%  { transform: scale(1);    opacity: 1; }
  100% { transform: scale(0.55); opacity: 0.35; }
}

@media (prefers-reduced-motion: reduce) {
  .loader-inner {
    animation: none;
    opacity: 0.85;
  }
}