* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
  margin: 0;
  font-family: 'Inter', sans-serif;
  color: #fff;
  overflow: hidden;
}

body {
  display: flex;
  align-items: center;
  justify-content: center;
  background: #0b0d12;
  position: relative;
}

.background {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.background .gradient {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(60vmax 60vmax at 15% 20%, rgba(22, 17, 55, 0.35), transparent 60%),
    radial-gradient(80vmax 80vmax at 85% 80%, rgba(200, 0, 100, 0.25), transparent 55%);
  background-size: 120% 120%;
  animation: float 20s ease-in-out infinite alternate,
    colorShift 25s ease-in-out infinite alternate;
}

.background .grid {
  position: absolute;
  inset: -20vmax;
  background:
    linear-gradient(transparent 97%, rgba(255, 255, 255, .06) 97%),
    linear-gradient(90deg, transparent 97%, rgba(255, 255, 255, .06) 97%);
  background-size: 40px 40px;
  animation: moveGrid 60s linear infinite, pulseGrid 10s ease-in-out infinite alternate;
  opacity: .4;
}

@keyframes moveGrid {
  from {
    transform: translateY(0);
  }

  to {
    transform: translateY(-40px);
  }
}

@keyframes pulseGrid {
  0% {
    opacity: .35;
    filter: brightness(1);
  }

  50% {
    opacity: .5;
    filter: brightness(1.2);
  }

  100% {
    opacity: .35;
    filter: brightness(1);
  }
}

@keyframes float {
  0% {
    transform: translateY(0) scale(1);
  }

  50% {
    transform: translateY(-2%) scale(1.02);
  }

  100% {
    transform: translateY(0) scale(1);
  }
}

@keyframes colorShift {
  0% {
    background:
      radial-gradient(60vmax 60vmax at 15% 20%, rgba(22, 17, 55, 0.35), transparent 60%),
      radial-gradient(80vmax 80vmax at 85% 80%, rgba(200, 0, 100, 0.25), transparent 55%);
  }

  50% {
    background:
      radial-gradient(60vmax 60vmax at 20% 25%, rgba(40, 25, 90, 0.4), transparent 60%),
      radial-gradient(80vmax 80vmax at 80% 75%, rgba(255, 0, 150, 0.3), transparent 55%);
  }

  100% {
    background:
      radial-gradient(60vmax 60vmax at 15% 20%, rgba(22, 17, 55, 0.35), transparent 60%),
      radial-gradient(80vmax 80vmax at 85% 80%, rgba(200, 0, 100, 0.25), transparent 55%);
  }
}

main {
  text-align: center;
  padding: 2rem;
  max-width: 600px;
  z-index: 1;
}

.logo-holder {
  margin-bottom: 2rem;
}

.logo-placeholder {
  width: 110px;
  height: 110px;
  border: 2px dashed rgba(255, 255, 255, .5);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, .4);
  font-weight: 600;
  margin: 0 auto 20px;
  font-size: 1.1rem;
  backdrop-filter: blur(4px);
}

.logo-placeholder img {
  width: 80px;
  height: 80px;
  object-fit: contain;
}

h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  margin: .2rem 0;
  background: linear-gradient(90deg,
      rgba(130, 110, 220, 1),
      rgba(190, 100, 200, 0.95),
      rgba(255, 180, 240, 0.85),
      rgba(130, 110, 220, 1));
  background-size: 300%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: gradientFlow 8s ease-in-out infinite;
}

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

  50% {
    background-position: 100% 50%;
  }

  100% {
    background-position: 0% 50%;
  }
}

p {
  font-size: 1.1rem;
  color: #d0d4de;
  letter-spacing: .5px;
}