/* ==================================================================
   BASE — reset, document defaults, accessibility primitives.
   No component styling lives here.
================================================================== */

*,
*::before,
*::after {
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

/* Several toggled elements are display:flex/grid, which would otherwise
   beat the user-agent [hidden] rule and leave stale UI on screen. */
[hidden] {
  display: none !important;
}

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

body {
  height: 100%;
  margin: 0;
  background: var(--bg-sunken);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: var(--size-body);
  line-height: var(--leading-normal);
  overscroll-behavior: none;
  -webkit-font-smoothing: antialiased;
}

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

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

h1, h2, h3, h4 {
  font-size: inherit;
  font-weight: var(--weight-semibold);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
}

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
}

button {
  margin: 0;
  cursor: pointer;
}

b, strong {
  font-weight: var(--weight-semibold);
}

::selection {
  background: color-mix(in srgb, var(--brand) 22%, transparent);
}

/* One focus treatment everywhere, keyboard only. Never removed. */
:focus-visible {
  outline: none;
  box-shadow: var(--ring);
  border-radius: var(--radius-sm);
}

/* French strings carry lang="fr" so speech synthesis and screen
   readers switch voice instead of reading French as English. */
[lang='fr'] {
  font-synthesis: none;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

/* ------------------------------------------------------ utilities --
   Deliberately few. A utility reached for three times should become
   a component instead. */
.u-muted { color: var(--text-muted); }
.u-subtle { color: var(--text-subtle); }
.u-center { text-align: center; }
.u-tail { height: calc(var(--space-10) + var(--safe-bottom)); }

.eyebrow {
  font-size: var(--size-caption);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--text-subtle);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}