/*
 * Base : polices, remise à zéro, typographie, focus, utilitaires.
 * Les valeurs viennent de tokens.css.
 */

/* Polices auto-hébergées (OFL, licences dans assets/fonts/). */
@font-face {
  font-family: "Fraunces";
  src: url("../fonts/fraunces-latin-opsz-SfWU466.woff2") format("woff2");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Source Sans 3";
  src: url("../fonts/source-sans-3-latin-wght-8PKsh_E.woff2") format("woff2");
  font-weight: 200 900;
  font-style: normal;
  font-display: swap;
}

/* Polices de secours ajustées aux métriques des vraies polices, pour que la
   page ne bouge pas quand celles-ci arrivent (valeurs calculées sur un
   texte français réel, voir docs/decisions.md). */
@font-face {
  font-family: "Fraunces Fallback";
  src: local("Georgia");
  size-adjust: 96.38%;
  ascent-override: 101.47%;
  descent-override: 26.46%;
  line-gap-override: 0%;
}

@font-face {
  font-family: "Source Sans Fallback";
  src: local("Arial");
  size-adjust: 93.68%;
  ascent-override: 109.31%;
  descent-override: 42.7%;
  line-gap-override: 0%;
}

/* Remise à zéro */
*,
*::before,
*::after {
  box-sizing: border-box;
}

* {
  margin: 0;
}

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-padding-top: calc(var(--header-height-compact) + var(--space-lg));
  color-scheme: light;
  accent-color: var(--color-accent);
}

@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
}

body {
  min-height: 100vh;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--text-body);
  line-height: var(--leading-body);
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-wrap: break-word;
}

img,
picture,
svg,
video {
  display: block;
  max-width: 100%;
}

img {
  height: auto;
}

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

button {
  cursor: pointer;
}

/* Spécificité nulle (:where) : les classes des composants gardent la main. */
:where(ul[role="list"], ol[role="list"]) {
  list-style: none;
  padding: 0;
}

/* Typographie */
h1,
h2,
h3,
h4 {
  font-family: var(--font-display);
  color: var(--color-text);
  text-wrap: balance;
  font-optical-sizing: auto;
}

h1 {
  font-size: var(--text-display);
  line-height: var(--leading-display);
  letter-spacing: var(--tracking-display);
  font-weight: var(--weight-display);
}

h2 {
  font-size: var(--text-headline);
  line-height: var(--leading-headline);
  letter-spacing: var(--tracking-headline);
  font-weight: var(--weight-headline);
}

h3 {
  font-size: var(--text-title);
  line-height: var(--leading-title);
  font-weight: var(--weight-title);
}

p {
  text-wrap: pretty;
}

a {
  color: var(--color-accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
  transition: color var(--duration-fast) var(--ease-out), text-decoration-color var(--duration-fast) var(--ease-out);
}

a:hover {
  color: var(--color-accent-strong);
  text-decoration-thickness: 2px;
}

strong {
  font-weight: 600;
}

/* Focus visible sur tous les éléments interactifs, jamais supprimé. */
:focus-visible {
  outline: var(--focus-width) solid var(--color-focus);
  outline-offset: var(--focus-offset);
}

::selection {
  background: var(--color-olive);
  color: var(--color-cream);
}

/* Utilitaires */
.container {
  width: min(100% - 2 * var(--gutter), var(--container));
  margin-inline: auto;
}

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

.skip-link {
  position: absolute;
  top: var(--space-sm);
  left: var(--space-sm);
  z-index: 100;
  padding: var(--space-sm) var(--space-md);
  background: var(--color-olive);
  color: var(--color-cream);
  font-weight: 600;
  border-radius: var(--radius-sm);
  text-decoration: none;
  transform: translateY(-200%);
}

.skip-link:focus-visible {
  transform: none;
  outline-color: var(--color-ink);
}

.skip-link:hover {
  color: var(--color-cream);
}

main:focus {
  outline: none;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}