/* =============================================================================
   Correctis — feuille de style commune du site
   Motif : la copie d'élève (papier Seyès, encre bleue, stylo rouge du prof).
   Polices auto-hébergées (licence SIL OFL) : Fraunces, Atkinson Hyperlegible,
   Caveat (uniquement pour l'écriture manuscrite des illustrations).
   ========================================================================== */

@font-face { font-family: "Fraunces"; font-weight: 600; font-style: normal; font-display: swap; src: url("fonts/fraunces-latin-600-normal.woff2") format("woff2"); }
@font-face { font-family: "Fraunces"; font-weight: 700; font-style: normal; font-display: swap; src: url("fonts/fraunces-latin-700-normal.woff2") format("woff2"); }
@font-face { font-family: "Atkinson Hyperlegible"; font-weight: 400; font-style: normal; font-display: swap; src: url("fonts/atkinson-hyperlegible-latin-400-normal.woff2") format("woff2"); }
@font-face { font-family: "Atkinson Hyperlegible"; font-weight: 400; font-style: italic; font-display: swap; src: url("fonts/atkinson-hyperlegible-latin-400-italic.woff2") format("woff2"); }
@font-face { font-family: "Atkinson Hyperlegible"; font-weight: 700; font-style: normal; font-display: swap; src: url("fonts/atkinson-hyperlegible-latin-700-normal.woff2") format("woff2"); }
@font-face { font-family: "Caveat"; font-weight: 600; font-style: normal; font-display: swap; src: url("fonts/caveat-latin-600-normal.woff2") format("woff2"); }

:root {
  /* Couleurs */
  --paper: #fbfcff;          /* fond : papier blanc légèrement froid */
  --paper-shade: #eef2fb;    /* bandes, zones secondaires */
  --rule: #c9d5ef;           /* lignes Seyès, bordures */
  --ink: #1b2559;            /* texte : encre bleu nuit */
  --ink-soft: #4b5582;       /* texte secondaire */
  --pen: #d3263a;            /* stylo rouge du correcteur (illustrations, rares accents) */
  --act: #0b8a66;            /* actions : vert Correctis */
  --act-hover: #08704f;
  --act-text: #ffffff;
  --card: #ffffff;
  --focus: #2f6fed;

  /* Typographie */
  --f-display: "Fraunces", Georgia, "Times New Roman", serif;
  --f-body: "Atkinson Hyperlegible", -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --f-hand: "Caveat", "Segoe Print", "Comic Sans MS", cursive;

  /* Échelle (≈ 1,25) */
  --t-xs: .82rem;
  --t-sm: .92rem;
  --t-md: 1.0625rem;
  --t-lg: 1.3rem;
  --t-xl: 1.75rem;
  --t-2xl: clamp(2rem, 4.2vw, 3.05rem);

  --wrap: 1120px;
  --gutter: 16px;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 var(--t-md)/1.6 var(--f-body);
}
img, svg { max-width: 100%; }
a { color: var(--act); text-underline-offset: 3px; }
a:hover { color: var(--act-hover); }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; border-radius: 4px; }
[hidden] { display: none !important; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 var(--gutter); }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 12px; top: 12px; background: var(--card); padding: 8px 12px; z-index: 10; }

h1, h2, h3 { font-family: var(--f-display); font-weight: 700; line-height: 1.15; letter-spacing: -0.01em; margin: 0 0 .5em; }
h1 { font-size: var(--t-2xl); }
h2 { font-size: var(--t-xl); }
h3 { font-size: var(--t-lg); font-weight: 600; }
p { margin: 0 0 1em; max-width: 68ch; }
.lead { font-size: 1.15rem; color: var(--ink-soft); }
.muted { color: var(--ink-soft); }

/* ── En-tête ───────────────────────────────────────────────────────────── */
.site-head { border-bottom: 1px solid var(--rule); background: var(--paper); position: sticky; top: 0; z-index: 5; }
.site-head .wrap { display: flex; align-items: center; gap: 20px; min-height: 64px; }
.logo { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font: 700 1.3rem var(--f-display); }
.logo svg, .logo img { flex: none; }
.logo img { width: 40px; height: 40px; }
.site-foot .logo img { width: 32px; height: 32px; }
.logo:hover { color: var(--ink); }
.nav { margin-left: auto; display: flex; align-items: center; gap: 22px; }
.nav a { color: var(--ink); text-decoration: none; font-size: var(--t-sm); }
.nav a:hover { color: var(--act); }
.nav a[aria-current="page"] { color: var(--act); font-weight: 700; }
.nav a.btn-act, .nav a.btn-act:hover { color: var(--act-text); }
.menu-btn { display: none; margin-left: auto; background: none; border: 1px solid var(--rule); border-radius: 8px; padding: 7px 12px; font: inherit; color: var(--ink); }

/* ── Boutons ───────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font: 700 var(--t-md) var(--f-body); text-decoration: none; cursor: pointer;
  padding: 12px 22px; border-radius: 10px; border: 2px solid transparent;
}
.btn-act { background: var(--act); color: var(--act-text); }
.btn-act:hover { background: var(--act-hover); color: var(--act-text); }
.btn-line { background: transparent; color: var(--ink); border-color: var(--ink); }
.btn-line:hover { background: var(--ink); color: var(--paper); }
.btn-sm { padding: 8px 14px; font-size: var(--t-sm); }

/* ── Sections ──────────────────────────────────────────────────────────── */
section { padding: 72px 0; }
.band { background: var(--paper-shade); border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule); }
.section-intro { max-width: 640px; margin-bottom: 36px; }

/* ── Pied de page ──────────────────────────────────────────────────────── */
.site-foot { border-top: 1px solid var(--rule); padding: 36px 0 44px; font-size: var(--t-sm); color: var(--ink-soft); }
.site-foot .wrap { display: flex; flex-wrap: wrap; gap: 18px 32px; align-items: flex-start; justify-content: space-between; }
.site-foot nav { display: flex; flex-wrap: wrap; gap: 10px 22px; }
.site-foot a { color: var(--ink); }

/* ── Pages de texte (confidentialité, suppression) ─────────────────────── */
.doc { padding: 48px 0 64px; }
.doc .wrap { max-width: 760px; }
.doc h2 { font-size: var(--t-lg); margin-top: 2em; }
.doc li { margin-bottom: .45em; }
.doc .updated { color: var(--ink-soft); font-size: var(--t-sm); }
.note {
  border-left: 4px solid var(--act); background: var(--paper-shade);
  padding: 14px 18px; border-radius: 0 10px 10px 0; margin: 1.4em 0;
}

/* ── Responsive ────────────────────────────────────────────────────────── */
@media (max-width: 760px) {
  section { padding: 52px 0; }
  .menu-btn { display: inline-block; }
  .nav {
    display: none; position: absolute; top: 64px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--paper); border-bottom: 1px solid var(--rule); padding: 8px var(--gutter) 16px;
  }
  .nav.open { display: flex; }
  .nav a { padding: 12px 0; border-bottom: 1px solid var(--paper-shade); font-size: var(--t-md); }
  .nav .btn { margin-top: 12px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}