*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100dvh;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: var(--lh-normal);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img {
  display: block;
  max-width: 100%;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
}

a {
  color: inherit;
}

p {
  margin: 0;
}

h1 {
  margin: 0;
  font-weight: inherit;
}

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

:focus {
  outline: none;
}

:focus-visible {
  outline: 2px solid var(--amber-ink);
  outline-offset: 3px;
  border-radius: var(--radius-xs);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  z-index: var(--z-skip-link);
  top: var(--space-3);
  left: var(--space-3);
  transform: translateY(-160%);
  background: var(--ink-strong);
  color: var(--paper);
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: var(--fs-mono-label);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: transform var(--dur-fast) var(--ease-standard);
}

.skip-link:focus {
  transform: translateY(0);
}

.dapple {
  position: fixed;
  inset: 0;
  z-index: var(--z-dapple);
  pointer-events: none;
  background:
    radial-gradient(closest-side, color-mix(in srgb, var(--sky-grey) 30%, transparent), transparent) 15% 20% / 40vmax 40vmax no-repeat,
    radial-gradient(closest-side, color-mix(in srgb, var(--mint) 22%, transparent), transparent) 85% 70% / 45vmax 45vmax no-repeat;
  opacity: 0.5;
  animation: dapple-drift var(--dur-ambient) ease-in-out infinite alternate;
}

body.tab-hidden .dapple {
  animation-play-state: paused;
}

@keyframes dapple-drift {
  from {
    transform: translate(0, 0) scale(1);
  }
  to {
    transform: translate(3vmax, -2vmax) scale(1.06);
  }
}

.toast {
  position: fixed;
  z-index: var(--z-lightbox-panel);
  left: 50%;
  bottom: max(env(safe-area-inset-bottom, 0px), var(--space-6));
  transform: translate(-50%, 8px);
  background: var(--ink-strong);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: var(--fs-mono-label);
  letter-spacing: var(--ls-mono);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lift);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur-base) var(--ease-standard), transform var(--dur-base) var(--ease-standard);
}

.toast.is-visible {
  opacity: 1;
  transform: translate(-50%, 0);
}

.page {
  max-width: var(--content-max);
  margin-inline: auto;
  padding-inline: var(--space-gutter);
}

@media (prefers-reduced-motion: reduce) {
  .dapple {
    animation: none;
    background-position: 15% 20%, 85% 70%;
  }

  .skip-link {
    transition: none;
  }

  .toast {
    transition: none;
  }
}