/* Reset and element defaults. */

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

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

body {
  margin: 0;
  background: var(--surface-page);
  color: var(--text-body);
  font-family: var(--font-sans);
  font-size: var(--type-body-size);
  font-weight: var(--type-body-weight);
  line-height: var(--type-body-leading);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, p, figure, ul, ol {
  margin: 0;
  padding: 0;
}

ul, ol { list-style: none; }

img, svg { display: block; max-width: 100%; }
[hidden] { display: none; }

a { color: inherit; }

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

/* Focus: always visible, always outside the border. Light-surface default;
   .on-dark scopes swap to the white on-dark ring. */
:focus-visible {
  outline: var(--focus-width) solid var(--focus);
  outline-offset: var(--focus-offset);
}
.on-dark :focus-visible,
.on-dark:focus-visible {
  outline-color: var(--focus-on-dark);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

/* Skip link: first focusable element on every page. Hidden until focused. */
.skip-link {
  position: absolute;
  top: var(--space-sm);
  left: var(--space-sm);
  z-index: 100;
  display: inline-flex;
  align-items: center;
  min-height: var(--target-min);
  padding: 12px 20px;
  background: var(--action-primary-bg);
  color: var(--action-primary-fg);
  font-family: var(--font-sans);
  font-size: var(--type-ui-label-size);
  font-weight: var(--type-ui-label-weight);
  line-height: var(--type-ui-label-leading);
  border-radius: var(--radius-sm);
  text-decoration: none;
  transform: translateY(-150%);
  transition: transform var(--motion-fast) var(--motion-easing);
}
.skip-link:focus {
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 1ms !important;
    scroll-behavior: auto !important;
  }
}