/* Selfia : pages d'information. Aucune police externe, aucune image distante. Theme clair ou sombre selon le systeme.
   Contrastes (WCAG AA, texte normal >= 4,5:1) : texte 15:1 et plus ; texte secondaire 7,3:1 (clair) et 8,3:1 (sombre) ;
   liens 7,3:1 (clair) et 10:1 (sombre). Les liens du texte sont soulignes (pas seulement la couleur). */
:root {
  color-scheme: light dark;
  --bg: #faf8f4;
  --surface: #ffffff;
  --text: #1d1b18;
  --muted: #57534d;
  --link: #5b3fa6;
  --link-hover: #3f2a7a;
  --border: #d9d1c5;
  --note-bg: #f1ecff;
  --note-border: #5b3fa6;
  --todo-bg: #ffd54a;
  --todo-text: #1d1b18;
  --todo-outline: #a1001f;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #131210;
    --surface: #1c1a17;
    --text: #ece8e1;
    --muted: #b5aea3;
    --link: #c9b6ff;
    --link-hover: #e4dbff;
    --border: #3a3631;
    --note-bg: #221d33;
    --note-border: #c9b6ff;
    --todo-outline: #ff8a9a;
  }
}

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

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 400 1.0625rem/1.65 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  overflow-wrap: break-word;
}

.wrap {
  max-width: 44rem;
  margin-inline: auto;
  padding-inline: max(1.25rem, env(safe-area-inset-left)) max(1.25rem, env(safe-area-inset-right));
}

a {
  color: var(--link);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--link-hover);
}

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

main:focus {
  outline: none;
}

.skip {
  position: absolute;
  left: 1rem;
  top: -10rem;
  z-index: 10;
  padding: 0.6rem 1rem;
  background: var(--surface);
  color: var(--link);
  border: 2px solid var(--link);
  border-radius: 0.5rem;
}

.skip:focus {
  top: 1rem;
}

/* ---------- en-tete ---------- */

.site-header {
  border-bottom: 1px solid var(--border);
  padding-block: 0.75rem 0.25rem;
}

.header-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem 1rem;
}

.brand {
  font-weight: 700;
  font-size: 1.3rem;
  letter-spacing: 0.01em;
  color: var(--text);
  text-decoration: none;
  padding-block: 0.4rem;
}

.lang a {
  display: inline-block;
  padding: 0.45rem 0.8rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 0.95rem;
  text-decoration: none;
  color: var(--text);
}

.lang a:hover {
  border-color: var(--link);
}

.site-nav ul {
  list-style: none;
  margin: 0.25rem 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0 1.1rem;
}

.site-nav a {
  display: inline-block;
  padding-block: 0.55rem;
  font-size: 0.98rem;
}

.site-nav a[aria-current="page"] {
  color: var(--text);
  font-weight: 700;
  text-decoration-thickness: 0.15em;
}

/* ---------- contenu ---------- */

main {
  padding-block: 1.5rem 2.5rem;
}

h1,
h2,
h3 {
  line-height: 1.25;
  text-wrap: balance;
}

h1 {
  font-size: clamp(1.75rem, 1.3rem + 2.2vw, 2.3rem);
  margin: 0.5rem 0 1rem;
}

h2 {
  font-size: 1.35rem;
  margin: 2.4rem 0 0.6rem;
  padding-top: 0.2rem;
}

h3 {
  font-size: 1.1rem;
  margin: 1.6rem 0 0.4rem;
}

p,
ul,
ol,
dl,
address {
  margin: 0 0 0.9rem;
}

ul,
ol {
  padding-left: 1.3rem;
}

li {
  margin-bottom: 0.35rem;
}

li > ul {
  margin-top: 0.35rem;
}

address {
  font-style: normal;
}

dt {
  font-weight: 700;
}

dd {
  margin: 0 0 0.75rem;
}

.lead {
  font-size: 1.15rem;
}

.muted {
  color: var(--muted);
}

.note {
  background: var(--note-bg);
  border-left: 4px solid var(--note-border);
  border-radius: 0 0.5rem 0.5rem 0;
  padding: 0.9rem 1rem 0.1rem;
  margin: 1.2rem 0;
}

.toc {
  border: 1px solid var(--border);
  border-radius: 0.6rem;
  padding: 0.6rem 1rem 0.2rem;
  margin: 1.2rem 0 1.5rem;
  background: var(--surface);
}

.toc h2 {
  font-size: 1rem;
  margin: 0.3rem 0 0.4rem;
  padding: 0;
}

.toc li {
  margin-bottom: 0.15rem;
}

.store-links {
  list-style: none;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.store-links a {
  display: inline-block;
  padding: 0.6rem 1rem;
  border: 1px solid var(--border);
  border-radius: 0.6rem;
  background: var(--surface);
  text-decoration: none;
  font-weight: 600;
}

.store-links a:hover {
  border-color: var(--link);
}

mark.todo {
  background: var(--todo-bg);
  color: var(--todo-text);
  outline: 2px dashed var(--todo-outline);
  outline-offset: 1px;
  padding: 0 0.25em;
  font-weight: 700;
}

/* ---------- pied de page ---------- */

.site-footer {
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.95rem;
  padding-block: 1.2rem 2rem;
  padding-bottom: max(2rem, env(safe-area-inset-bottom));
}

.site-footer p {
  margin-bottom: 0.4rem;
}

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