/* ============================================================================
   SIDE — Atmospheric overlays · V2
   Preloader · subtle vignette · scroll progress
   ========================================================================== */

/* ----- Cinematic vignette (subtle depth) ----- */
.vignette {
  position: fixed; inset: 0; z-index: 8000; pointer-events: none;
  background: radial-gradient(130% 130% at 50% 45%, transparent 66%, rgba(0,0,0,0.42) 100%);
}

/* ----- Scroll progress (gold thread) ----- */
.progress {
  position: fixed; top: 0; left: 0; height: 2px; width: 100%;
  transform: scaleX(0); transform-origin: left;
  background: linear-gradient(90deg, var(--gold-deep), var(--gold-bright));
  box-shadow: 0 0 18px var(--gold-glow);
  z-index: var(--z-nav); will-change: transform;
}

/* ----- Preloader ----- */
.preloader {
  position: fixed; inset: 0; z-index: 11000;
  background: radial-gradient(120% 120% at 50% 40%, var(--surface), var(--void) 70%);
  display: grid; place-items: center;
  transition: opacity 1s var(--ease-out), visibility 1s;
}
.preloader.is-done { opacity: 0; visibility: hidden; pointer-events: none; }
.preloader__inner { text-align: center; width: min(420px, 76vw); }
.preloader__mark { display: flex; justify-content: center; margin-bottom: 2.2rem; }
.preloader__mark .logo { font-size: clamp(2.1rem, 6vw, 3.3rem); }
.preloader__bar { height: 1px; width: 100%; background: var(--line); position: relative; overflow: hidden; }
.preloader__fill { position: absolute; inset: 0; width: 0%; background: linear-gradient(90deg, var(--gold-deep), var(--gold-bright)); box-shadow: 0 0 14px var(--gold-glow); }
.preloader__pct { margin-top: 1rem; font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.3em; color: var(--text-dim); display: flex; justify-content: space-between; }

/* ----- Camadas: brilho dourado deslizando + halo no piso (lâminas de vidro) ----- */
.layers__sheen{ position:absolute; inset:0; z-index:2; pointer-events:none; mix-blend-mode:screen;
  background:linear-gradient(108deg, transparent 38%, rgba(247,181,0,0.14) 47%, rgba(255,210,77,0.30) 50%, rgba(247,181,0,0.14) 53%, transparent 62%);
  transform:translateX(-130%); animation:layersSheen 7.5s cubic-bezier(0.5,0,0.2,1) 1.2s infinite; }
@keyframes layersSheen{ 0%{ transform:translateX(-130%);} 55%,100%{ transform:translateX(130%);} }
.layers__floor{ position:absolute; left:50%; bottom:-3%; z-index:0; width:60%; height:10%; transform:translateX(-50%);
  background:radial-gradient(closest-side, var(--gold-glow), transparent 78%); filter:blur(16px); opacity:0.45; pointer-events:none; }
@media (prefers-reduced-motion:reduce){ .layers__sheen{ animation:none; opacity:0;} }