/* ============================================================
   SaraLearn — learn.sara.education
   Tokens repris de colors_and_type.css (Sara Design System)
   Partagé par / (EN) et /fr/ (FR)
   ============================================================ */
:root {
  --font-display: 'Newsreader', 'Iowan Old Style', Georgia, serif;
  --font-ui: 'Manrope', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --paper: #FAF7F0;
  --paper-deep: #F2EDE2;
  --surface: #FFFFFF;

  --ink-900: #1A1814;
  --ink-700: #3F3A33;
  --ink-500: #6E665B;
  --ink-400: #978F82;
  --ink-300: #BFB7A8;

  --line: #E5DECF;

  --primary-50: #EEF1F8;
  --primary-100: #D7DEEE;
  --primary-200: #AEBDD9;
  --primary-400: #4F6CA0;
  --primary-600: #1B3A6E;
  --primary-700: #142C55;

  --gold-100: #F8EBC6;
  --gold-300: #E8C56F;
  --gold-500: #C8932E;
  --gold-700: #8E6516;

  --cycle-primaire: #E07A36;
  --cycle-college: #2F8A74;
  --cycle-lycee: #4E3A91;

  --r-lg: 14px;
  --r-xl: 20px;
  --r-pill: 999px;

  --shadow-sm: 0 1px 2px rgba(26,24,20,0.06);
  --shadow-md: 0 2px 4px rgba(26,24,20,0.05);
  --shadow-lg: 0 4px 8px rgba(26,24,20,0.06);
  --shadow-xl: 0 8px 16px rgba(26,24,20,0.08), 0 32px 64px -16px rgba(26,24,20,0.18);

  --gutter: 64px;
  --section-gap: 88px;
}

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

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

html, body {
  margin: 0;
  background: var(--paper);
  font-family: var(--font-ui);
  color: var(--ink-900);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body { min-height: 100vh; overflow-x: hidden; }

a { color: var(--primary-600); text-decoration: none; }
a:hover { color: var(--primary-700); text-decoration: underline; }
a:focus-visible,
:focus-visible { outline: 2px solid var(--gold-500); outline-offset: 3px; border-radius: 4px; }

p { margin: 0; }
h1, h2 { margin: 0; }

/* ----- icônes -------------------------------------------- */
.ico {
  width: 1em; height: 1em;
  display: block; flex: none;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.75;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.sprite { position: absolute; width: 0; height: 0; overflow: hidden; }

/* ----- structure ----------------------------------------- */
.wrap { max-width: 1180px; margin: 0 auto; padding-left: var(--gutter); padding-right: var(--gutter); }
.section { padding-top: var(--section-gap); }
.band { margin-top: var(--section-gap); background: var(--primary-700); color: var(--paper); padding: 80px 0; }

/* ----- typographie --------------------------------------- */
.eyebrow {
  font-size: 13px; font-weight: 700;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--primary-600);
}
.eyebrow--onDark { color: var(--primary-200); }
.eyebrow--sm { font-size: 12px; color: var(--ink-500); }

.h1 {
  font-family: var(--font-display);
  font-size: clamp(46px, 7.4vw, 76px);
  font-weight: 500; line-height: 1.05; letter-spacing: -0.03em;
  color: #FFFFFF;
}
.h2 {
  font-family: var(--font-display);
  font-size: clamp(32px, 4.4vw, 44px);
  font-weight: 500; line-height: 1.15; letter-spacing: -0.02em;
  margin-top: 20px; max-width: 860px;
}
.h2--onDark { color: #FFFFFF; }
.h2--wide { max-width: 900px; }
.h2--narrow { max-width: 820px; }
.dot { color: var(--gold-500); }

.serif-it {
  font-family: var(--font-display); font-style: italic; font-weight: 500;
  color: var(--gold-300);
}
.lede {
  font-size: 19px; line-height: 1.7; color: var(--ink-700);
  max-width: 800px; margin-top: 20px; text-wrap: pretty;
}
.lede--tight { margin-top: 12px; }
.lede--wide { max-width: 820px; }
.lede--onDark { color: var(--primary-100); }

/* ----- hero ---------------------------------------------- */
.hero {
  background: var(--primary-700); color: var(--paper);
  padding-top: 96px; padding-bottom: 88px;
}
.hero__inner { display: flex; flex-direction: column; gap: 28px; }
.hero__kicker {
  display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
  font-size: 13px; font-weight: 700; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--primary-200);
}
.hero__kicker .sep { color: var(--primary-400); }
.hero__tagline {
  font-family: var(--font-display); font-style: italic;
  font-size: clamp(24px, 3.4vw, 34px);
  font-weight: 500; line-height: 1.2; color: var(--gold-300);
}
.hero__body { font-size: 20px; line-height: 1.7; color: var(--primary-100); max-width: 840px; text-wrap: pretty; }
.hero__body--muted { font-size: 18px; color: var(--primary-200); }
.hero__motto {
  font-family: var(--font-display); font-style: italic;
  font-size: 22px; line-height: 1.5; color: var(--gold-300);
}

/* ----- sélecteur de langue -------------------------------- */
.langs {
  display: flex; gap: 2px; padding: 4px; margin-left: auto;
  border-radius: var(--r-pill); background: rgba(250,247,240,0.08);
}
.langs a {
  padding: 6px 13px; border-radius: var(--r-pill);
  font-size: 12px; font-weight: 700; letter-spacing: 0.08em;
  color: var(--primary-200); transition: background-color 140ms, color 140ms;
}
.langs a:hover { color: #FFFFFF; background: rgba(250,247,240,0.1); text-decoration: none; }
.langs a[aria-current="page"] { background: var(--gold-500); color: var(--ink-900); }

/* ----- boutons ------------------------------------------- */
.actions { display: flex; gap: 16px; flex-wrap: wrap; margin-top: 8px; }
.btn {
  display: inline-flex; align-items: center; gap: 12px;
  padding: 16px 28px; border-radius: 10px;
  font-size: 17px; font-weight: 700; line-height: 1.2;
  transition: transform 140ms cubic-bezier(0.2,0.7,0.2,1), background-color 140ms, border-color 140ms;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn .ico { font-size: 18px; }
.btn--primary { background: var(--gold-500); color: var(--ink-900); }
.btn--primary:hover { background: var(--gold-300); color: var(--ink-900); }
.btn--ghost { border: 1px solid rgba(174,189,217,0.4); color: var(--paper); }
.btn--ghost:hover { border-color: var(--primary-200); background: rgba(250,247,240,0.06); color: var(--paper); }

/* ----- grilles de cartes --------------------------------- */
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 40px; }
.grid-4--lead { margin-top: 44px; }

.card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-lg);
  padding: 28px; box-shadow: var(--shadow-sm);
  display: flex; flex-direction: column; gap: 14px;
}
.card__ico { font-size: 28px; color: var(--primary-600); }
.card__ico--primaire { color: var(--cycle-primaire); }
.card__ico--college { color: var(--cycle-college); }
.card__ico--lycee { color: var(--cycle-lycee); }
.card__title { font-size: 20px; font-weight: 700; }
.card__text { font-size: 16px; line-height: 1.6; color: var(--ink-500); }

.tile {
  background: var(--paper-deep); border-radius: var(--r-lg); padding: 28px;
  display: flex; flex-direction: column; gap: 12px;
}
.tile__ico { font-size: 24px; color: var(--gold-700); }
.tile__text { font-size: 17px; line-height: 1.6; color: var(--ink-700); }

.pull {
  font-family: var(--font-display); font-size: 26px; line-height: 1.5;
  color: var(--ink-900); margin-top: 32px; max-width: 820px;
}

/* ----- étapes -------------------------------------------- */
.steps { display: flex; flex-direction: column; gap: 24px; margin-top: 44px; }
.step {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-xl);
  padding: 40px; box-shadow: var(--shadow-md);
  display: grid; grid-template-columns: 1.1fr 1fr; gap: 56px; align-items: start;
}
.step__head { display: flex; align-items: baseline; gap: 16px; }
.step__num { font-family: var(--font-display); font-size: 34px; font-weight: 500; color: var(--ink-300); }
.step__name { font-size: 26px; font-weight: 700; }
.step__sub { font-family: var(--font-display); font-style: italic; font-size: 22px; color: var(--ink-500); margin-top: 8px; }
.step__text { font-size: 17px; line-height: 1.7; color: var(--ink-700); margin-top: 18px; }

.pill-ai {
  display: inline-flex; align-items: center; gap: 10px; margin-top: 22px;
  padding: 10px 18px; border-radius: var(--r-pill);
  background: var(--gold-100); color: var(--gold-700);
  font-size: 15px; font-weight: 700;
}
.pill-ai .ico { font-size: 16px; }

.step__aside { display: flex; flex-direction: column; gap: 20px; }
.step__aside--tight { gap: 16px; }
.aside-block + .aside-block { border-top: 1px solid var(--line); padding-top: 20px; }
.aside-block__text { font-size: 17px; line-height: 1.6; color: var(--ink-700); margin-top: 12px; }

.who { display: flex; flex-direction: column; gap: 12px; margin-top: 14px; }
.who__row { display: flex; align-items: center; gap: 12px; font-size: 17px; font-weight: 600; }
.who__row .ico { font-size: 18px; color: var(--primary-600); }

.feat { display: flex; align-items: flex-start; gap: 14px; }
.feat .ico { font-size: 20px; color: var(--primary-600); margin-top: 2px; }
.feat__title { font-size: 17px; font-weight: 700; }
.feat__text { font-size: 16px; line-height: 1.6; color: var(--ink-500); margin-top: 4px; }

/* ----- boucle de valeur ---------------------------------- */
.loop { background: var(--primary-700); color: var(--paper); border-radius: var(--r-xl); padding: 36px; }
.loop__chips {
  display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
  margin-top: 20px; font-size: 16px; font-weight: 600;
}
.chip { padding: 10px 16px; border-radius: var(--r-pill); background: rgba(250,247,240,0.08); }
.chip--ai { background: rgba(232,197,111,0.16); color: var(--gold-300); }
.loop__arrow { color: var(--gold-300); font-size: 18px; }
.loop__note { font-size: 17px; line-height: 1.7; color: var(--primary-100); margin-top: 20px; max-width: 900px; }

/* ----- le principe : un contenu, N déclinaisons ----------- */
.principle__pull {
  font-family: var(--font-display); font-style: italic;
  font-size: clamp(24px, 3.2vw, 32px); line-height: 1.35;
  color: var(--gold-300); margin-top: 28px; max-width: 900px;
  border-left: 3px solid var(--gold-500); padding-left: 24px;
}

.decl {
  display: grid; grid-template-columns: 0.95fr auto 1.15fr;
  gap: 36px; align-items: center; margin-top: 44px;
}

.decl__source {
  background: rgba(250,247,240,0.06); border: 1px solid rgba(174,189,217,0.3);
  border-radius: var(--r-xl); padding: 32px;
  display: flex; flex-direction: column; gap: 12px;
}
.decl__source .ico { font-size: 28px; color: var(--gold-300); }
.decl__sourceTitle { font-family: var(--font-display); font-size: 26px; font-weight: 500; color: #FFFFFF; }
.decl__sourceText { font-size: 16px; line-height: 1.6; color: var(--primary-200); }
.decl__sourceTag {
  align-self: flex-start; margin-top: 4px;
  padding: 7px 14px; border-radius: var(--r-pill);
  background: rgba(250,247,240,0.08); color: var(--primary-100);
  font-size: 13px; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase;
}

.decl__engine { display: flex; flex-direction: column; align-items: center; gap: 12px; }
.decl__engine .ico { font-size: 26px; color: var(--gold-300); }
.decl__engineTag {
  padding: 9px 16px; border-radius: var(--r-pill);
  background: rgba(232,197,111,0.16); color: var(--gold-300);
  font-size: 14px; font-weight: 700; white-space: nowrap;
}

.decl__outputs { display: flex; flex-direction: column; gap: 14px; }
.decl__out {
  background: rgba(250,247,240,0.06); border: 1px solid rgba(174,189,217,0.22);
  border-radius: var(--r-lg); padding: 20px 22px;
  display: flex; align-items: flex-start; gap: 14px;
}
.decl__out .ico { font-size: 19px; color: var(--gold-300); margin-top: 3px; }
.decl__outTitle { font-size: 17px; font-weight: 700; color: #FFFFFF; }
.decl__outText { font-size: 16px; line-height: 1.55; color: var(--primary-200); margin-top: 5px; }

.contrast { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 36px; }
.contrast__col {
  background: rgba(250,247,240,0.06); border: 1px solid rgba(174,189,217,0.3);
  border-radius: var(--r-xl); padding: 28px 30px;
}
.contrast__col--fixed { border-color: rgba(174,189,217,0.3); }
.contrast__col--adapt { border-color: rgba(232,197,111,0.42); }
.contrast__head { display: flex; align-items: center; gap: 11px; }
.contrast__head .ico { font-size: 20px; color: var(--primary-200); }
.contrast__col--adapt .contrast__head .ico { color: var(--gold-300); }
.contrast__title { font-size: 18px; font-weight: 700; color: #FFFFFF; }
.contrast__list { list-style: none; margin: 18px 0 0; padding: 0; display: flex; flex-direction: column; gap: 12px; }
.contrast__list li {
  display: flex; align-items: flex-start; gap: 11px;
  font-size: 16px; line-height: 1.55; color: var(--primary-100);
}
.contrast__list .ico { font-size: 16px; margin-top: 4px; color: var(--primary-400); }
.contrast__col--adapt .contrast__list .ico { color: var(--gold-500); }

/* ----- moteur (IA) --------------------------------------- */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; margin-top: 44px; }
.ai-card {
  background: rgba(250,247,240,0.06); border: 1px solid rgba(174,189,217,0.3);
  border-radius: var(--r-xl); padding: 36px;
  display: flex; flex-direction: column; gap: 14px;
}
.ai-card__ico { font-size: 30px; color: var(--gold-300); }
.ai-card__name { font-family: var(--font-display); font-size: 32px; font-weight: 500; color: #FFFFFF; }
.ai-card__text { font-size: 17px; line-height: 1.7; color: var(--primary-100); margin-top: 6px; text-wrap: pretty; }
.ai-card__text--muted { color: var(--primary-200); margin-top: 0; }

/* ----- note contenus ------------------------------------- */
.note {
  display: flex; align-items: flex-start; gap: 14px; margin-top: 28px;
  background: var(--paper-deep); border-radius: var(--r-lg); padding: 24px 28px;
}
.note .ico { font-size: 20px; color: var(--gold-700); margin-top: 2px; }
.note__title { font-size: 17px; font-weight: 700; color: var(--gold-700); }
.note__text { font-size: 16px; line-height: 1.6; color: var(--ink-700); margin-top: 4px; }

/* ----- écosystème / acteurs ------------------------------ */
.eco {
  display: grid; grid-template-columns: 1fr 1.1fr 1fr; gap: 20px;
  align-items: stretch; margin: 44px auto 0; max-width: 1060px;
}
.eco__cell {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-lg);
  padding: 20px; box-shadow: var(--shadow-md);
}
.eco__head { display: flex; align-items: center; gap: 10px; }
.eco__head .ico { font-size: 20px; color: var(--primary-600); }
.eco__name { font-size: 17px; font-weight: 700; }
.eco__text { font-size: 15px; line-height: 1.55; color: var(--ink-500); margin-top: 8px; }

.eco__hubwrap { display: flex; align-items: center; justify-content: center; padding: 12px 0; }
.eco__hub {
  width: 100%; max-width: 260px; aspect-ratio: 1;
  border-radius: var(--r-pill); background: var(--primary-700); color: var(--paper);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 10px; text-align: center; padding: 28px; box-shadow: var(--shadow-xl);
}
.eco__hubName { font-family: var(--font-display); font-size: 30px; font-weight: 500; color: #FFFFFF; }
.eco__hubTags { display: flex; flex-direction: column; gap: 8px; margin-top: 4px; width: 100%; }
.eco__hubTag {
  padding: 7px 12px; border-radius: var(--r-pill);
  background: rgba(232,197,111,0.16); color: var(--gold-300);
  font-size: 14px; font-weight: 700;
}

.a1 { grid-area: 1 / 1; } .a2 { grid-area: 1 / 2; } .a3 { grid-area: 1 / 3; }
.b1 { grid-area: 2 / 1; } .b2 { grid-area: 2 / 2; } .b3 { grid-area: 2 / 3; }
.c2 { grid-area: 3 / 2; }

/* ----- flux de valeur ------------------------------------ */
.flow {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-xl);
  padding: 32px; box-shadow: var(--shadow-md); margin-top: 44px;
}
.flow__row { display: flex; align-items: center; gap: 16px; margin-top: 20px; flex-wrap: wrap; }
.flow__step {
  padding: 10px 18px; border-radius: var(--r-pill);
  background: var(--primary-50); color: var(--primary-600);
  font-size: 16px; font-weight: 700;
}
.flow__step--gold { background: var(--gold-100); color: var(--gold-700); }
.flow__arrow { font-size: 18px; color: var(--ink-300); }
.flow__note { font-size: 17px; line-height: 1.7; color: var(--ink-700); margin-top: 20px; max-width: 900px; }

/* ----- équipe / histoire --------------------------------- */
.about { display: grid; grid-template-columns: 0.8fr 1.2fr; gap: 48px; margin-top: 40px; align-items: start; }
.founder {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-xl);
  padding: 32px; box-shadow: var(--shadow-lg);
  display: flex; flex-direction: column; gap: 16px;
}
.founder__avatar {
  width: 76px; height: 76px; border-radius: var(--r-pill);
  background: var(--primary-700); color: var(--gold-300);
  font-family: var(--font-display); font-size: 30px; font-weight: 500;
  display: flex; align-items: center; justify-content: center;
}
.founder__name { font-family: var(--font-display); font-size: 30px; font-weight: 500; line-height: 1.15; }
.founder__role { font-size: 17px; font-weight: 700; color: var(--primary-600); }
.founder__meta { border-top: 1px solid var(--line); padding-top: 16px; font-size: 16px; line-height: 1.6; color: var(--ink-500); }

.timeline { display: flex; flex-direction: column; gap: 24px; }
.tl { display: grid; grid-template-columns: 120px 1fr; gap: 24px; align-items: start; }
.tl + .tl { border-top: 1px solid var(--line); padding-top: 24px; }
.tl__year { font-family: var(--font-display); font-size: 26px; font-weight: 500; color: var(--ink-400); }
.tl__year--now { color: var(--gold-700); }
.tl__title { font-size: 19px; font-weight: 700; }
.tl__text { font-size: 17px; line-height: 1.7; color: var(--ink-700); margin-top: 8px; }

/* ----- contact ------------------------------------------- */
.contact__inner { display: flex; flex-direction: column; gap: 24px; }
.contact__h2 {
  font-family: var(--font-display);
  font-size: clamp(34px, 5.6vw, 52px);
  font-weight: 500; line-height: 1.1; letter-spacing: -0.02em;
  color: #FFFFFF; max-width: 900px; margin: 0;
}
.contact__tagline { font-family: var(--font-display); font-style: italic; font-size: clamp(21px, 3vw, 26px); line-height: 1.5; color: var(--gold-300); }
.contact__text { font-size: 19px; line-height: 1.7; color: var(--primary-100); max-width: 840px; text-wrap: pretty; }

/* ----- pied de page -------------------------------------- */
.foot {
  padding-top: 36px; padding-bottom: 64px;
  display: flex; justify-content: space-between; align-items: center;
  gap: 24px; flex-wrap: wrap;
}
.foot__logo { font-family: var(--font-display); font-size: 22px; font-weight: 500; }
.foot__note { font-family: var(--font-display); font-style: italic; font-size: 16px; color: var(--ink-500); }
.foot__langs { display: flex; gap: 10px; font-size: 13px; font-weight: 700; letter-spacing: 0.08em; }
.foot__langs a { color: var(--ink-500); }
.foot__langs a[aria-current="page"] { color: var(--ink-900); }

/* ============================================================
   Adaptations écrans réduits
   ============================================================ */
@media (max-width: 1080px) {
  :root { --gutter: 40px; --section-gap: 72px; }
  .step { gap: 40px; padding: 36px; }
}

@media (max-width: 980px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .eco { grid-template-columns: 1fr 1fr; max-width: 620px; }
  .a1, .a2, .a3, .b1, .b3, .c2 { grid-area: auto; }
  .b2 { grid-area: auto; grid-column: 1 / -1; order: -1; }
  .eco__hub { max-width: 240px; }
}

@media (max-width: 900px) {
  .step { grid-template-columns: 1fr; gap: 28px; }
  .about { grid-template-columns: 1fr; gap: 32px; }
  .grid-2 { grid-template-columns: 1fr; gap: 20px; }
  .decl { grid-template-columns: 1fr; gap: 20px; }
  .decl__engine { flex-direction: row; justify-content: center; }
  .decl__engine .ico { transform: rotate(90deg); }
  .contrast { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  :root { --gutter: 20px; --section-gap: 56px; }
  .hero { padding-top: 64px; padding-bottom: 64px; }
  .band { padding: 56px 0; }
  .grid-4 { grid-template-columns: 1fr; }
  .eco { grid-template-columns: 1fr; }
  .step { padding: 28px; border-radius: var(--r-lg); }
  .loop { padding: 28px; }
  .ai-card { padding: 28px; }
  .flow { padding: 24px; }
  .founder { padding: 24px; }
  .decl__source, .contrast__col { padding: 24px; }
  .principle__pull { padding-left: 18px; }
  .tl { grid-template-columns: 1fr; gap: 8px; }
  .tl + .tl { padding-top: 20px; }
  .btn { width: 100%; justify-content: center; }
  .actions { gap: 12px; }
  .hero__body { font-size: 18px; }
  .lede { font-size: 17px; }
  .pull { font-size: 22px; }
  .foot { padding-bottom: 48px; }
  .langs { margin-left: 0; }
}

@media print {
  .actions, .btn, .langs, .foot__langs { display: none; }
  .hero, .band, .loop, .eco__hub { -webkit-print-color-adjust: exact; print-color-adjust: exact; }
}