/* ==========================================================================
   Animations — kept deliberately restrained: one orchestrated load sequence,
   quiet scroll reveals, and functional micro-interactions on hover/focus.
   ========================================================================== */

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.96); }
  to   { opacity: 1; transform: scale(1); }
}

@keyframes markSpin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

@keyframes dash {
  to { stroke-dashoffset: 0; }
}

@keyframes pulseDot {
  0%, 100% { opacity: 0.35; }
  50% { opacity: 1; }
}

@keyframes marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* Scroll reveal: elements start hidden, JS toggles .is-visible via IntersectionObserver */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--dur-slow) var(--ease), transform var(--dur-slow) var(--ease);
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-stagger > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--dur-slow) var(--ease), transform var(--dur-slow) var(--ease);
}
.reveal-stagger.is-visible > * { opacity: 1; transform: translateY(0); }
.reveal-stagger.is-visible > *:nth-child(1) { transition-delay: 0ms; }
.reveal-stagger.is-visible > *:nth-child(2) { transition-delay: 70ms; }
.reveal-stagger.is-visible > *:nth-child(3) { transition-delay: 140ms; }
.reveal-stagger.is-visible > *:nth-child(4) { transition-delay: 210ms; }
.reveal-stagger.is-visible > *:nth-child(5) { transition-delay: 280ms; }
.reveal-stagger.is-visible > *:nth-child(6) { transition-delay: 350ms; }
.reveal-stagger.is-visible > *:nth-child(n+7) { transition-delay: 400ms; }

@media (prefers-reduced-motion: reduce) {
  .reveal, .reveal-stagger > * {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
}

/* Preloader */
.loader {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: var(--paper);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 520ms var(--ease), visibility 520ms var(--ease);
}
.loader[data-hidden="true"] {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}
.loader__mark {
  width: 64px;
  height: 64px;
  position: relative;
}
.loader__mark svg { width: 100%; height: 100%; }
.loader__mark circle {
  fill: none;
  stroke: var(--ink);
  stroke-width: 1.4;
  stroke-dasharray: 4 6;
  animation: markSpin 2.4s linear infinite;
  transform-origin: center;
}
.loader__mark .loader__cross {
  stroke: var(--accent);
  stroke-width: 2;
}
.loader__label {
  position: absolute;
  bottom: var(--space-xl);
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

/* Fade the page in once loader clears */
body.is-loading { overflow: hidden; }