html {
  scroll-behavior: smooth;
}

body {
  font-family: Georgia, "Times New Roman", Times, serif;
  background:
    radial-gradient(
      circle at top left,
      rgba(217, 70, 239, 0.12),
      transparent 28%
    ),
    radial-gradient(
      circle at bottom right,
      rgba(148, 163, 184, 0.06),
      transparent 30%
    ),
    linear-gradient(180deg, rgba(255, 255, 255, 0.015), transparent 22%),
    #121212;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  position: relative;
}

/*
 * This site uses Tailwind via CDN (no build step). `font-nav`/`font-libre`
 * are used in the HTML but are not provided by Tailwind by default.
 * Define them here to avoid relying on implicit fonts.
 */
.font-nav {
  font-family: Georgia, "Times New Roman", Times, serif;
}

.font-libre {
  font-family: Georgia, "Times New Roman", Times, serif;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

/* Prevent fixed nav from covering anchored headings */
section {
  scroll-margin-top: 96px;
  position: relative;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 72px 72px;
  background-position: 0 0, 0 0;
  mask-image: radial-gradient(circle at center, black, transparent 90%);
  opacity: 0.18;
  z-index: 0;
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 18% 12%, rgba(217, 70, 239, 0.1), transparent 24%),
    radial-gradient(circle at 82% 78%, rgba(255, 255, 255, 0.035), transparent 20%);
  opacity: 0.45;
  z-index: 0;
}

nav,
main,
footer {
  position: relative;
  z-index: 1;
}

/* Consistent, visible keyboard focus without changing layout */
:where(a, button, input, textarea, select, summary):focus-visible {
  outline: 2px solid rgba(217, 70, 239, 0.85);
  outline-offset: 3px;
}

::selection {
  background: rgba(217, 70, 239, 0.35);
}

::placeholder {
  color: rgba(255, 255, 255, 0.35);
}

img {
  display: block;
}

@media (prefers-reduced-motion: no-preference) {
  body::before {
    animation: drift-grid 90s linear infinite;
  }

  .reveal {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 600ms ease, transform 600ms ease;
  }

  .reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes drift-grid {
  from {
    background-position: 0 0, 0 0;
  }

  to {
    background-position: 72px 36px, 72px 36px;
  }
}