* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  height: 100%;
  width: 100%;
  overflow: hidden;
}

body {
  background: radial-gradient(ellipse at center, #1a1f2e 0%, #0a0d14 100%);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.stage {
  height: 100vh;
  width: 100vw;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.stage::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 30%, rgba(99, 102, 241, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(168, 85, 247, 0.12) 0%, transparent 50%);
  pointer-events: none;
}

.logo {
  max-width: min(60vw, 480px);
  max-height: 60vh;
  width: auto;
  height: auto;
  opacity: 0;
  transform: scale(0.92);
  transition: opacity 1.2s ease, transform 1.2s ease;
  filter: drop-shadow(0 20px 60px rgba(0, 0, 0, 0.4));
  animation: float 6s ease-in-out infinite;
}

.logo.loaded {
  opacity: 1;
  transform: scale(1);
}

@keyframes float {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-12px) scale(1); }
}

@media (prefers-reduced-motion: reduce) {
  .logo { animation: none; }
}