Full-Screen Overlay

<div class="nuda-mdx-fsoverlay" role="dialog" aria-modal="true" aria-label="Full-screen overlay">
  <div class="nuda-mdx-fsoverlay__blur"></div>
  <div class="nuda-mdx-fsoverlay__content">
    <button class="nuda-mdx-fsoverlay__close" aria-label="Close">&times;</button>
    <div class="nuda-mdx-fsoverlay__logo">
      <svg width="28" height="28" viewBox="0 0 32 32" fill="none">
        <rect width="32" height="32" rx="8" fill="#e4ff54"/>
        <path d="M9 16 L16 9 L23 16 L16 23 Z" fill="#0a0a0a"/>
      </svg>
    </div>
    <p class="nuda-mdx-fsoverlay__headline">Full Coverage</p>
    <p class="nuda-mdx-fsoverlay__sub">Takes over the entire viewport</p>
    <nav class="nuda-mdx-fsoverlay__nav">
      <a href="#" class="nuda-mdx-fsoverlay__link">Home</a>
      <a href="#" class="nuda-mdx-fsoverlay__link">Work</a>
      <a href="#" class="nuda-mdx-fsoverlay__link">About</a>
    </nav>
  </div>
</div>

.nuda-mdx-fsoverlay {
  position: relative;
  width: 100%;
  min-height: 160px;
  border-radius: 12px;
  overflow: hidden;
  background: #0d0d0d;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: _nuda-mdxFsIn .5s ease-out both;
}

.nuda-mdx-fsoverlay__blur {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 20% 50%,rgba(228,255,84,.06) 0%,transparent 70%);
}

.nuda-mdx-fsoverlay__content {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .35rem;
  padding: 1rem;
}

.nuda-mdx-fsoverlay__close {
  position: absolute;
  top: .6rem;
  right: .8rem;
  font-size: 1rem;
  color: #555;
  cursor: pointer;
  line-height: 1;
}

.nuda-mdx-fsoverlay__logo {
  margin-bottom: .1rem;
}

.nuda-mdx-fsoverlay__headline {
  margin: 0;
  font-size: .85rem;
  font-weight: 800;
  color: #fafafa;
  letter-spacing: -.01em;
}

.nuda-mdx-fsoverlay__sub {
  margin: 0;
  font-size: .62rem;
  color: #555;
}

.nuda-mdx-fsoverlay__nav {
  display: flex;
  gap: .75rem;
  margin-top: .3rem;
}

.nuda-mdx-fsoverlay__link {
  font-size: .65rem;
  color: #cfcfcf;
  cursor: pointer;
  border-bottom: 1px solid rgba(228,255,84,.3);
  padding-bottom: 1px;
}

@keyframes _nuda-mdxFsIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

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