/**
 * NÜBIA — Animations & Effets de Particules Flottantes Hero
 */

.particles-container {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 4;
  overflow: hidden;
}

#hero-particles-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: auto;
}

/* Halos lumineux d'ambiance */
.hero-ambient-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  opacity: 0.25;
  z-index: 1;
  animation: pulseAmbient 8s ease-in-out infinite alternate;
}
.hero-glow-1 {
  width: 450px;
  height: 450px;
  background: radial-gradient(circle, #e4c77e 0%, #c9a24b 40%, transparent 70%);
  top: 15%;
  left: 50%;
  transform: translateX(-50%);
}
.hero-glow-2 {
  width: 320px;
  height: 320px;
  background: radial-gradient(circle, #c9a24b 0%, #8a6519 50%, transparent 70%);
  bottom: 10%;
  right: 15%;
  animation-delay: -4s;
}

/* Étoiles scintillantes */
.twinkle-star {
  position: absolute;
  color: var(--gold-light);
  font-size: 14px;
  pointer-events: none;
  z-index: 3;
  animation: nubtwinkle 4.5s ease-in-out infinite;
  text-shadow: 0 0 10px rgba(228, 199, 126, 0.8), 0 0 20px rgba(201, 162, 75, 0.4);
}
.twinkle-star.pos-1 { top: 18%; left: 16%; animation-delay: 0s; font-size: 16px; }
.twinkle-star.pos-2 { top: 28%; right: 18%; animation-delay: 0.9s; font-size: 13px; }
.twinkle-star.pos-3 { bottom: 25%; left: 22%; animation-delay: 1.8s; font-size: 11px; }
.twinkle-star.pos-4 { top: 65%; right: 26%; animation-delay: 2.7s; font-size: 12px; }

/* Courbes orientales dorées SVG */
.hero-corner-arch {
  position: absolute;
  width: 260px;
  opacity: 0.45;
  pointer-events: none;
  z-index: 2;
  transition: opacity 0.5s ease;
}
.hero-corner-arch.left {
  left: -30px;
  bottom: -30px;
}
.hero-corner-arch.right {
  right: -30px;
  bottom: -30px;
  transform: scaleX(-1);
}

@keyframes pulseAmbient {
  0% {
    transform: translateX(-50%) scale(0.9);
    opacity: 0.2;
  }
  100% {
    transform: translateX(-50%) scale(1.15);
    opacity: 0.35;
  }
}

/* ====================================================================
   EMBLÈME NÜBIA AVEC VORTEX DE PARTICULES DORÉES
   ==================================================================== */
.hero-brand-centerpiece {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 100%;
  margin-bottom: 22px;
}

.hero-clean-brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transform: none;
  transition: opacity 1.4s cubic-bezier(0.22, 1, 0.36, 1);
  will-change: opacity;
}

.hero-clean-brand.is-revealed {
  opacity: 1;
  pointer-events: auto;
  transform: none;
}