/* ==========================================================================
   VIZANTINO PIEL — WELCOME PRELOADER (INTRO CINEMATOGRÁFICA)
   Duración total: ~4 segundos.
   Paleta: #251B16 (café oscuro), #3B2A20 (chocolate), #C6A477 (dorado)
   ========================================================================== */

#welcomePreloader {
  position: fixed;
  inset: 0;
  z-index: 9999999;
  background-color: #251B16;
  background-image: radial-gradient(circle at 50% 50%, #3B2A20 0%, #251B16 65%, #16100c 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  opacity: 1;
  visibility: visible;
  transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1), visibility 0.7s ease;
  pointer-events: auto;
  user-select: none;
}

#welcomePreloader.preloader-hidden {
  opacity: 0 !important;
  visibility: hidden !important;
  pointer-events: none !important;
}

/* Contenedor de diapositivas cinematográficas */
.vp-cinematic-stage {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.vp-cinematic-slide {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transform: scale(1.08);
  transition: opacity 0.6s ease-in-out, transform 1.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  will-change: opacity, transform;
}

.vp-cinematic-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  filter: brightness(0.68) contrast(1.15) saturate(1.08);
}

.vp-cinematic-slide.active {
  opacity: 1;
  transform: scale(1.02);
}

/* Superposición de viñeta y gradientes de lujo */
.vp-cinematic-overlay {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at center, rgba(37, 27, 22, 0.45) 0%, rgba(22, 16, 12, 0.85) 70%, rgba(10, 7, 5, 0.96) 100%);
  mix-blend-mode: multiply;
  pointer-events: none;
}

.vp-cinematic-scanlines {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(198, 164, 119, 0.04) 0%, transparent 50%, rgba(0, 0, 0, 0.35) 100%);
  pointer-events: none;
}

/* Resplandor dorado central */
.vp-cinematic-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 520px;
  height: 520px;
  background: radial-gradient(circle, rgba(198, 164, 119, 0.18) 0%, transparent 65%);
  border-radius: 50%;
  pointer-events: none;
  animation: vpPulseGlow 3s ease-in-out infinite alternate;
}

@keyframes vpPulseGlow {
  0% { transform: translate(-50%, -50%) scale(0.9); opacity: 0.6; }
  100% { transform: translate(-50%, -50%) scale(1.15); opacity: 0.95; }
}

/* Contenido de Bienvenida Central */
.vp-cinematic-content {
  position: relative;
  z-index: 10;
  text-align: center;
  padding: 1.5rem;
  max-width: 680px;
  width: 90%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

/* Logo Vizantino en Preloader */
.vp-preloader-logo {
  height: 48px;
  width: auto;
  object-fit: contain;
  margin-bottom: 1.25rem;
  filter: drop-shadow(0 4px 12px rgba(198, 164, 119, 0.4));
  opacity: 0;
  transform: translateY(12px) scale(0.96);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.vp-preloader-logo.show {
  opacity: 1;
  transform: translateY(0) scale(1);
}

/* Subtítulo elegante */
.vp-preloader-sub {
  font-size: 0.68rem;
  letter-spacing: 0.42em;
  text-transform: uppercase;
  color: #C6A477;
  font-weight: 600;
  margin-bottom: 0.5rem;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.7s ease-out 0.2s, transform 0.7s ease-out 0.2s;
}

.vp-preloader-sub.show {
  opacity: 1;
  transform: translateY(0);
}

/* Título Principal */
.vp-preloader-title {
  font-family: 'Playfair Display', Georgia, serif;
  font-size: clamp(1.75rem, 5vw, 3rem);
  font-weight: 700;
  line-height: 1.2;
  color: #FAF7F2;
  letter-spacing: 0.04em;
  margin-bottom: 0.75rem;
  text-shadow: 0 4px 20px rgba(0, 0, 0, 0.85);
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.8s ease-out 0.3s, transform 0.8s ease-out 0.3s;
}

.vp-preloader-title.show {
  opacity: 1;
  transform: translateY(0);
}

.vp-preloader-title .gold-accent {
  background: linear-gradient(135deg, #FFF3D1 0%, #DFB96C 50%, #C6A477 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  font-style: italic;
  display: inline-block;
}

/* Línea divisoria dorada */
.vp-preloader-divider {
  width: 0;
  height: 1.5px;
  background: linear-gradient(90deg, transparent 0%, #C6A477 50%, transparent 100%);
  margin: 0.75rem auto 1rem auto;
  transition: width 0.9s cubic-bezier(0.25, 0.46, 0.45, 0.94) 0.4s;
}

.vp-preloader-divider.show {
  width: 140px;
}

/* Lema inferior */
.vp-preloader-tagline {
  font-size: 0.75rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: #F2E6D8;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.7s ease-out 0.5s, transform 0.7s ease-out 0.5s;
}

.vp-preloader-tagline.show {
  opacity: 0.85;
  transform: translateY(0);
}

/* Barra de progreso sutil inferior */
.vp-preloader-progress-track {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2.5px;
  background: rgba(198, 164, 119, 0.15);
}

.vp-preloader-progress-bar {
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, #3B2A20, #C6A477, #F2E6D8);
  transition: width 3.6s linear;
}

/* Botón Omitir Introducción (Accesibilidad) */
.vp-preloader-skip {
  position: absolute;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 20;
  background: rgba(37, 27, 22, 0.75);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(198, 164, 119, 0.4);
  color: #F2E6D8;
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-weight: 600;
  padding: 0.5rem 1rem;
  border-radius: 9999px;
  cursor: pointer;
  transition: all 0.25s ease;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  opacity: 0.85;
}

.vp-preloader-skip:hover,
.vp-preloader-skip:focus {
  background: rgba(198, 164, 119, 0.25);
  border-color: #C6A477;
  color: #FFFFFF;
  opacity: 1;
  outline: none;
  transform: translateY(-1px);
}

/* Respeto a usuarios con reducción de movimiento */
@media (prefers-reduced-motion: reduce) {
  #welcomePreloader {
    display: none !important;
  }
}