.splash-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  z-index: 9999;
  transition: opacity 0.8s ease;
}

.splash-container {
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: linear-gradient(120deg, var(--surface) 0%, var(--surface-container-low) 100%);
  transition: opacity 1s;
  will-change: opacity;
}

.splash-container.hidden {
  opacity: 0;
  pointer-events: none;
}

.sphere-wireframe,
.sphere-wireframe_mini {
  perspective: 1000px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.sphere-wireframe {
  width: 300px;
  height: 300px;
}

.sphere-wireframe_mini {
  width: 150px;
  height: 150px;
}

.sphere,
.sphere_mini {
  position: relative;
  transform-style: preserve-3d;
  width: 100%;
  height: 100%;
  animation: sphereRotation 8s linear infinite;
  will-change: transform;
}

.ring,
.ring_mini {
  position: absolute;
  width: 100%;
  height: 100%;
  border: 1px solid rgba(196, 247, 249, 0.35);
  border-radius: 50%;
  transform-style: preserve-3d;
  box-shadow:
    0 0 10px rgba(196, 247, 249, 0.25),
    0 0 20px rgba(196, 247, 249, 0.18);
}

.ringX0 { transform: rotateX(0deg); }
.ringX1 { transform: rotateX(30deg); }
.ringX2 { transform: rotateX(60deg); }
.ringX3 { transform: rotateX(90deg); }
.ringX4 { transform: rotateX(120deg); }
.ringX5 { transform: rotateX(150deg); }
.ringY0 { transform: rotateY(0deg); }
.ringY1 { transform: rotateY(30deg); }
.ringY2 { transform: rotateY(60deg); }
.ringY3 { transform: rotateY(90deg); }
.ringY4 { transform: rotateY(120deg); }
.ringY5 { transform: rotateY(150deg); }

@keyframes sphereRotation {
  0% { transform: rotateY(0deg) rotateX(0deg); }
  50% { transform: rotateY(180deg) rotateX(30deg); }
  100% { transform: rotateY(360deg) rotateX(0deg); }
}

.headline,
.headline_titre {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.08em;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-container) 100%);
  background-size: 140% 140%;
  background-clip: text;
  -webkit-background-clip: text;
  color: transparent;
  text-shadow: 0 6px 18px rgba(196, 247, 249, 0.2);
  animation: gradientFlow 6s infinite alternate, headlineAppear 2s ease forwards 1s;
  opacity: 0;
  transform: translateY(-40px);
}

.headline { font-size: 3.2rem; }
.headline_titre { font-size: 1.85rem; }

@keyframes gradientFlow {
  0% { background-position: 0% 50%; }
  100% { background-position: 100% 50%; }
}

@keyframes headlineAppear {
  0% {
    opacity: 0;
    transform: translateY(-50px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 768px) {
  .sphere-wireframe {
    width: 220px;
    height: 220px;
  }

  .sphere-wireframe_mini {
    width: 104px;
    height: 104px;
  }

  .ring,
  .ring_mini {
    box-shadow: 0 0 8px rgba(196, 247, 249, 0.16);
  }

  .headline {
    font-size: 2.5rem;
  }
}

@media (max-width: 560px) {
  .headline {
    font-size: 2rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .splash-container,
  .sphere,
  .sphere_mini,
  .headline,
  .headline_titre,
  .featured-loading::before {
    animation: none !important;
    transition: none !important;
  }

  .headline,
  .headline_titre {
    opacity: 1;
    transform: none;
  }
}