/* ============================================================
   motion.css — Motion Layer Nucleus
   Loader · Clarity Reveal · keyframes · reduced motion
   ============================================================ */

/* Nucleus Loader */
.loader { position: fixed; inset: 0; z-index: var(--z-loader); display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 26px; background: var(--color-navy); transition: opacity .6s var(--ease), visibility .6s var(--ease); }
.loader.is-done { opacity: 0; visibility: hidden; }
.loader__orbit { position: relative; width: 90px; height: 90px; }
.loader__core { position: absolute; top: 50%; left: 50%; width: 18px; height: 18px; transform: translate(-50%,-50%); border-radius: 50%; background: radial-gradient(circle, var(--color-cyan), var(--color-blue)); box-shadow: 0 0 22px var(--color-cyan); animation: pulse 1.6s ease-in-out infinite; }
.loader__ring { position: absolute; inset: 0; border-radius: 50%; border: 1px solid rgba(255,255,255,0.18); }
.loader__ring--1 { border-top-color: var(--color-cyan); animation: spin 1.4s linear infinite; }
.loader__ring--2 { inset: 16px; border-top-color: var(--color-blue); animation: spin 1s linear infinite reverse; }
.loader__label { color: rgba(255,255,255,0.85); font-weight: var(--fw-bold); letter-spacing: 0.3em; text-transform: uppercase; font-size: 0.8rem; }

@keyframes spin { to { transform: rotate(360deg); } }
@keyframes pulse { 0%,100% { transform: translate(-50%,-50%) scale(1); } 50% { transform: translate(-50%,-50%) scale(1.35); } }
@keyframes fadeUp { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }

/* Clarity Reveal */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity var(--motion-slow) var(--ease), transform var(--motion-slow) var(--ease); }
.reveal.is-visible { opacity: 1; transform: none; }

/* View transition (route change) */
.view-fade-enter-active { transition: opacity .4s var(--ease), transform .4s var(--ease); }
.view-fade-leave-active { transition: opacity .2s var(--ease); }
.view-fade-enter-from { opacity: 0; transform: translateY(12px); }
.view-fade-leave-to { opacity: 0; }

/* Diag step transition */
.diag-step-enter-active { animation: fadeUp .45s var(--ease); }

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
  .reveal { opacity: 1; transform: none; }
  .loader { display: none; }
}