/* ============================================================================
   LLMUN 2027 — Feuille de style principale
   Système de design : jetons → base → primitives de mise en page → composants
   → sections → mouvement → points de rupture.
   Typographie : Playfair Display (titres) + DM Sans (interface / texte courant).
   ========================================================================= */

/* ---------------------------------------------------------------- 1. JETONS */
:root {
  /* Couleurs de marque : bleu nuit diplomatique, laiton chaud, ivoire */
  --navy-950: #08131f;
  --navy-900: #0d2135;
  --navy-800: #12314c;
  --navy-700: #1a4667;
  --navy-600: #235b83;
  --blue-500: #2f7cab;
  --blue-300: #8fbcd6;
  --blue-100: #dbe9f2;

  --brass-600: #8a6224; /* petits textes : 4.8:1 sur papier */
  --brass-accent: #a2762f; /* titres >= 24px : conforme AA gros texte */
  --brass-500: #c2954a;
  --brass-400: #d9b374;
  --brass-200: #f0dcb6;

  --ivory: #fbf8f2;
  --paper: #f4f0e7;
  --paper-2: #ece6d9;

  --ink: #131e29;
  --ink-soft: #3c4d5d;
  --ink-muted: #5c6d78;
  --line: rgba(19, 30, 41, 0.12);
  --line-strong: rgba(19, 30, 41, 0.2);

  /* Rôles sémantiques */
  --bg: var(--ivory);
  --surface: #ffffff;
  --surface-alt: var(--paper);
  --text: var(--ink);
  --text-soft: var(--ink-soft);

  /* Typographie fluide (320px → 1440px) */
  --font-display: "Playfair Display", "Iowan Old Style", Georgia, serif;
  --font-sans: "DM Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;

  --step--1: clamp(0.82rem, 0.79rem + 0.14vw, 0.9rem);
  --step-0: clamp(1rem, 0.96rem + 0.2vw, 1.09rem);
  --step-1: clamp(1.13rem, 1.06rem + 0.34vw, 1.33rem);
  --step-2: clamp(1.33rem, 1.2rem + 0.63vw, 1.72rem);
  --step-3: clamp(1.6rem, 1.38rem + 1.06vw, 2.25rem);
  --step-4: clamp(1.95rem, 1.58rem + 1.83vw, 3rem);
  --step-5: clamp(2.35rem, 1.73rem + 3.06vw, 4rem);
  --step-6: clamp(2.8rem, 1.65rem + 5.75vw, 6rem);

  /* Rythme d'espacement */
  --space-2xs: 0.375rem;
  --space-xs: 0.625rem;
  --space-s: 1rem;
  --space-m: 1.5rem;
  --space-l: 2.25rem;
  --space-xl: 3.5rem;
  --space-2xl: clamp(3.5rem, 2.5rem + 5vw, 7rem);

  --gutter: clamp(1.25rem, 0.9rem + 1.8vw, 2.5rem);
  --measure: 68ch;
  --container: 1200px;

  /* Formes et profondeur */
  --radius-xs: 6px;
  --radius-s: 10px;
  --radius-m: 16px;
  --radius-l: 26px;
  --radius-pill: 999px;

  --shadow-xs: 0 1px 2px rgba(11, 32, 51, 0.06), 0 2px 8px rgba(11, 32, 51, 0.05);
  --shadow-s: 0 2px 6px rgba(11, 32, 51, 0.07), 0 10px 24px rgba(11, 32, 51, 0.07);
  --shadow-m: 0 6px 14px rgba(11, 32, 51, 0.09), 0 20px 44px rgba(11, 32, 51, 0.11);
  --shadow-l: 0 18px 40px rgba(8, 19, 31, 0.18), 0 44px 90px rgba(8, 19, 31, 0.18);

  --ring: 0 0 0 3px var(--ivory), 0 0 0 6px var(--blue-500);

  /* Mouvement */
  --ease-out: cubic-bezier(0.22, 0.68, 0.32, 1);
  --ease-spring: cubic-bezier(0.32, 1.4, 0.5, 1);
  --t-fast: 160ms;
  --t-med: 280ms;
  --t-slow: 520ms;

  --header-h: 76px;
}

@media (min-width: 1600px) {
  :root {
    --container: 1320px;
  }
}

/* ------------------------------------------------------------ 2. BASE / RESET */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 1rem);
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: var(--step-0);
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

h1,
h2,
h3,
h4 {
  font-family: var(--font-display);
  font-weight: 500;
  line-height: 1.1;
  margin: 0;
  text-wrap: balance;
  letter-spacing: -0.015em;
}

p {
  margin: 0;
  text-wrap: pretty;
}

a {
  color: inherit;
}

button {
  font: inherit;
  color: inherit;
}

:focus-visible {
  outline: none;
  box-shadow: var(--ring);
  border-radius: var(--radius-xs);
}

::selection {
  background: var(--brass-200);
  color: var(--navy-900);
}

.skip-link {
  position: absolute;
  left: 50%;
  top: 0;
  transform: translate(-50%, -150%);
  z-index: 200;
  padding: 0.75rem 1.25rem;
  background: var(--navy-900);
  color: #fff;
  border-radius: 0 0 var(--radius-s) var(--radius-s);
  font-weight: 600;
  text-decoration: none;
  transition: transform var(--t-fast) var(--ease-out);
}

.skip-link:focus-visible {
  transform: translate(-50%, 0);
}

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

/* -------------------------------------------------------- 3. MISE EN PAGE */
.container {
  width: min(var(--container), 100% - (var(--gutter) * 2));
  margin-inline: auto;
}

.container--narrow {
  width: min(820px, 100% - (var(--gutter) * 2));
}

.section {
  padding-block: var(--space-2xl);
}

.section--tight {
  padding-block: clamp(2.5rem, 1.8rem + 3.5vw, 4.5rem);
}

.section--paper {
  background: var(--paper);
}

.section__head {
  max-width: 62ch;
  margin-inline: auto;
  text-align: center;
  margin-bottom: clamp(2rem, 1.4rem + 2.4vw, 3.5rem);
}

.section__head h2,
.section__title {
  font-size: var(--step-4);
  color: var(--navy-800);
}

.section__head h2 em,
.section__title em {
  font-style: italic;
  color: var(--brass-accent);
}

.section__lead {
  margin-top: var(--space-s);
  color: var(--text-soft);
  font-size: var(--step-1);
  line-height: 1.6;
}

/* Surtitre avec filets décoratifs */
.eyebrow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  margin: 0 0 var(--space-s);
  font-family: var(--font-sans);
  font-size: clamp(0.68rem, 0.64rem + 0.2vw, 0.78rem);
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--brass-600);
}

.eyebrow::before,
.eyebrow::after {
  content: "";
  width: clamp(18px, 5vw, 42px);
  height: 1px;
  background: currentColor;
  opacity: 0.5;
}

.eyebrow--start {
  justify-content: flex-start;
}

.eyebrow--start::before {
  display: none;
}

/* ------------------------------------------------------------- 4. BOUTONS */
.btn {
  --btn-bg: var(--navy-700);
  --btn-fg: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  min-height: 48px;
  padding: 0.85rem 1.6rem;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  background: var(--btn-bg);
  color: var(--btn-fg);
  font-family: var(--font-sans);
  font-size: var(--step--1);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  box-shadow: var(--shadow-s);
  transition: transform var(--t-fast) var(--ease-out), box-shadow var(--t-med) var(--ease-out),
    background-color var(--t-med) var(--ease-out), color var(--t-med) var(--ease-out),
    border-color var(--t-med) var(--ease-out);
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-m);
}

.btn:active {
  transform: translateY(0);
}

.btn__arrow {
  transition: transform var(--t-med) var(--ease-spring);
}

.btn:hover .btn__arrow {
  transform: translateX(4px);
}

.btn--gold {
  --btn-bg: linear-gradient(135deg, var(--brass-400), var(--brass-500));
  --btn-fg: var(--navy-950);
}

.btn--light {
  --btn-bg: var(--ivory);
  --btn-fg: var(--navy-800);
}

.btn--ghost {
  --btn-bg: transparent;
  --btn-fg: currentColor;
  border-color: currentColor;
  box-shadow: none;
  opacity: 0.92;
}

.btn--ghost:hover {
  background: rgba(255, 255, 255, 0.12);
  box-shadow: none;
  opacity: 1;
}

.btn--on-light.btn--ghost {
  color: var(--navy-800);
  border-color: var(--line-strong);
}

.btn--on-light.btn--ghost:hover {
  background: rgba(19, 49, 76, 0.06);
}

.btn[disabled],
.btn[aria-disabled="true"] {
  cursor: not-allowed;
  opacity: 0.55;
  box-shadow: none;
}

.btn[disabled]:hover,
.btn[aria-disabled="true"]:hover {
  transform: none;
  box-shadow: none;
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-s);
}

.btn-row--center {
  justify-content: center;
}

/* Lien texte fléché */
.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: var(--step--1);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--navy-700);
  padding-block: 0.35rem;
}

.link-arrow span:last-child {
  transition: transform var(--t-med) var(--ease-spring);
}

.link-arrow:hover span:last-child {
  transform: translateX(5px);
}

/* -------------------------------------------------------- 5. EN-TÊTE / NAV */
.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  transition: background-color var(--t-med) var(--ease-out), box-shadow var(--t-med) var(--ease-out);
}

.site-header::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(180deg, rgba(8, 19, 31, 0.55), rgba(8, 19, 31, 0));
  opacity: 1;
  transition: opacity var(--t-med) var(--ease-out);
}

.site-header.is-stuck {
  background: rgba(251, 248, 242, 0.9);
  backdrop-filter: saturate(150%) blur(14px);
  -webkit-backdrop-filter: saturate(150%) blur(14px);
  box-shadow: 0 1px 0 var(--line), var(--shadow-xs);
}

.site-header.is-stuck::after {
  opacity: 0;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-m);
  min-height: var(--header-h);
}

.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 0.4rem;
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 1.1rem + 0.7vw, 1.6rem);
  font-weight: 600;
  letter-spacing: 0.04em;
  color: #fff;
  text-decoration: none;
  transition: color var(--t-med) var(--ease-out);
}

.brand span {
  font-size: 0.72em;
  color: var(--brass-400);
  letter-spacing: 0.1em;
}

.site-header.is-stuck .brand {
  color: var(--navy-800);
}

.site-header.is-stuck .brand span {
  color: var(--brass-600);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: clamp(0.9rem, 0.2rem + 1.6vw, 2.1rem);
}

.nav-links a {
  position: relative;
  color: #fff;
  font-size: var(--step--1);
  font-weight: 600;
  letter-spacing: 0.03em;
  text-decoration: none;
  padding: 0.55rem 0.15rem;
  transition: color var(--t-med) var(--ease-out);
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0.1rem;
  height: 1.5px;
  background: var(--brass-400);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--t-med) var(--ease-out);
}

.nav-links a:hover::after,
.nav-links a[aria-current="page"]::after {
  transform: scaleX(1);
}

.site-header.is-stuck .nav-links a {
  color: var(--navy-800);
}

.site-header.is-stuck .nav-links a:hover {
  color: var(--navy-600);
}

.nav-cta {
  border: 1px solid rgba(255, 255, 255, 0.6);
  border-radius: var(--radius-pill);
  padding: 0.6rem 1.25rem !important;
}

.nav-cta::after {
  display: none !important;
}

.nav-cta:hover {
  background: var(--brass-400);
  border-color: var(--brass-400);
  color: var(--navy-950) !important;
}

.site-header.is-stuck .nav-cta {
  border-color: var(--navy-700);
  background: var(--navy-700);
  color: #fff !important;
}

.site-header.is-stuck .nav-cta:hover {
  background: var(--navy-900);
  border-color: var(--navy-900);
}

/* Bouton hamburger */
.nav-toggle {
  display: none;
  width: 46px;
  height: 46px;
  padding: 0;
  border: 0;
  border-radius: var(--radius-s);
  background: transparent;
  cursor: pointer;
  position: relative;
  z-index: 96;
}

.nav-toggle span {
  position: absolute;
  left: 50%;
  width: 22px;
  height: 2px;
  border-radius: 2px;
  background: #fff;
  transform: translateX(-50%);
  transition: transform var(--t-med) var(--ease-out), opacity var(--t-fast) linear,
    background-color var(--t-med) var(--ease-out);
}

.nav-toggle span:nth-child(1) {
  top: 17px;
}
.nav-toggle span:nth-child(2) {
  top: 23px;
}
.nav-toggle span:nth-child(3) {
  top: 29px;
}

.site-header.is-stuck .nav-toggle span {
  background: var(--navy-800);
}

.nav-toggle[aria-expanded="true"] span,
.site-header.is-stuck .nav-toggle[aria-expanded="true"] span {
  background: #fff;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateX(-50%) translateY(6px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateX(-50%) translateY(-6px) rotate(-45deg);
}

/* Tiroir ouvert : l'en-tête redevient transparent pour laisser respirer le
   panneau, et le logo passe au-dessus tout en restant lisible sur fond sombre. */
body.nav-open .site-header,
body.nav-open .site-header.is-stuck {
  background: transparent;
  box-shadow: none;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}

body.nav-open .brand,
body.nav-open .site-header.is-stuck .brand {
  position: relative;
  z-index: 96;
  color: #fff;
}

body.nav-open .brand span,
body.nav-open .site-header.is-stuck .brand span {
  color: var(--brass-400);
}

.nav-scrim {
  position: fixed;
  inset: 0;
  z-index: 90;
  background: rgba(8, 19, 31, 0.55);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--t-med) var(--ease-out), visibility var(--t-med);
}

body.nav-open .nav-scrim {
  opacity: 1;
  visibility: visible;
}

body.nav-open {
  overflow: hidden;
}

/* ---------------------------------------------------------------- 6. HÉROS */
.hero {
  position: relative;
  display: grid;
  align-items: end;
  min-height: min(100svh, 900px);
  padding-block: calc(var(--header-h) + var(--space-xl)) clamp(3.5rem, 2rem + 6vw, 7rem);
  color: #fff;
  overflow: hidden;
  isolation: isolate;
}

.hero__media {
  position: absolute;
  inset: 0;
  z-index: -2;
}

.hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 45%;
  animation: hero-zoom 18s var(--ease-out) forwards;
}

@keyframes hero-zoom {
  from {
    transform: scale(1.08);
  }
  to {
    transform: scale(1);
  }
}

.hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, rgba(6, 16, 26, 0.92) 0%, rgba(7, 20, 33, 0.74) 45%, rgba(10, 28, 45, 0.4) 100%),
    linear-gradient(0deg, rgba(6, 16, 26, 0.85), rgba(6, 16, 26, 0) 55%);
}

.hero .eyebrow {
  color: var(--brass-400);
  justify-content: flex-start;
}

.hero .eyebrow::before {
  display: none;
}

.hero h1 {
  font-size: var(--step-6);
  line-height: 0.95;
  letter-spacing: -0.03em;
  max-width: 14ch;
  text-shadow: 0 6px 30px rgba(0, 0, 0, 0.35);
}

.hero h1 em {
  display: block;
  font-style: italic;
  font-weight: 600;
  color: var(--brass-400);
}

.hero .btn-row {
  margin-top: clamp(1.75rem, 1.2rem + 2vw, 2.75rem);
}

/* Héros secondaire (pages internes) */
.page-hero {
  position: relative;
  display: grid;
  align-items: center;
  min-height: clamp(330px, 48vh, 480px);
  padding-block: calc(var(--header-h) + var(--space-l)) var(--space-l);
  color: #fff;
  overflow: hidden;
  isolation: isolate;
  text-align: center;
  background: linear-gradient(135deg, var(--navy-900), var(--navy-700) 55%, var(--navy-800));
}

.page-hero__media {
  position: absolute;
  inset: 0;
  z-index: -2;
}

.page-hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(7, 18, 30, 0.88), rgba(8, 24, 39, 0.74)),
    radial-gradient(120% 90% at 50% 0%, rgba(15, 47, 74, 0.4), transparent);
}

.page-hero .eyebrow {
  color: var(--brass-400);
}

.page-hero h1 {
  font-size: var(--step-5);
}

.page-hero h1 em {
  font-style: italic;
  color: var(--brass-400);
}

.page-hero p {
  max-width: 58ch;
  margin: var(--space-s) auto 0;
  color: var(--blue-100);
  font-size: var(--step-1);
}

/* Fil d'Ariane */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: var(--space-s);
  font-size: var(--step--1);
  color: rgba(255, 255, 255, 0.65);
}

.breadcrumb a {
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.breadcrumb a:hover {
  border-color: currentColor;
}

/* --------------------------------------------------- 7. BANDEAU D'INFOS CLÉS */
.facts {
  position: relative;
  z-index: 2;
  margin-top: clamp(-4.5rem, -5vw, -2.5rem);
}

.facts__inner {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 200px), 1fr));
  gap: 1px;
  margin: 0;
  background: var(--line);
  border-radius: var(--radius-m);
  overflow: hidden;
  box-shadow: var(--shadow-m);
}

.fact {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: clamp(1.25rem, 1rem + 1vw, 2rem);
  background: var(--surface);
  text-align: center;
}

.fact dt {
  order: 2;
  font-size: var(--step--1);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-muted);
}

.fact dd {
  order: 1;
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.45rem, 1.15rem + 1.1vw, 2rem);
  color: var(--navy-800);
  line-height: 1.15;
}

/* ----------------------------------------------------------- 8. GRILLES */
.grid-auto {
  display: grid;
  gap: clamp(1rem, 0.7rem + 1.2vw, 1.75rem);
}

.grid-auto > * {
  min-width: 0;
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr));
}

.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 230px), 1fr));
}

/* Cartes comités (visuel + dégradé) */
.committee-card {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  min-height: 300px;
  padding: clamp(1.25rem, 1rem + 1vw, 1.75rem);
  border-radius: var(--radius-m);
  overflow: hidden;
  isolation: isolate;
  color: #fff;
  text-decoration: none;
  background: linear-gradient(150deg, var(--navy-900), var(--navy-700));
  box-shadow: var(--shadow-s);
  transition: transform var(--t-med) var(--ease-out), box-shadow var(--t-med) var(--ease-out);
}

.committee-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-m);
}

.committee-card__media {
  position: absolute;
  inset: 0;
  z-index: -2;
}

.committee-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--t-slow) var(--ease-out);
}

.committee-card:hover .committee-card__media img {
  transform: scale(1.06);
}

.committee-card::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(180deg, rgba(7, 18, 30, 0.2) 20%, rgba(7, 18, 30, 0.88));
}

.committee-card__num {
  font-family: var(--font-display);
  font-size: var(--step-2);
  color: var(--brass-400);
  letter-spacing: 0.04em;
}

.committee-card h2,
.committee-card h3 {
  margin-top: 0.35rem;
  font-size: var(--step-2);
}

.committee-card p {
  margin-top: 0.4rem;
  color: rgba(255, 255, 255, 0.78);
  font-size: var(--step--1);
}

/* Carte comité sans visuel : filigrane typographique */
.committee-card--placeholder {
  /* Sans visuel ni description, la carte se resserre pour éviter le vide. */
  min-height: 240px;
  background: linear-gradient(155deg, var(--navy-900) 10%, var(--navy-700) 60%, var(--brass-600) 190%);
}

.committee-card--placeholder::after {
  content: "LLMUN";
  position: absolute;
  top: 8%;
  left: 50%;
  z-index: -1;
  transform: translateX(-50%) rotate(-9deg);
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 1.2rem + 2.4vw, 3rem);
  font-weight: 600;
  letter-spacing: 0.02em;
  color: #fff;
  opacity: 0.14;
  white-space: nowrap;
  pointer-events: none;
}

.committee-card--cta {
  background: linear-gradient(160deg, var(--navy-800), var(--navy-950));
  justify-content: center;
  text-align: center;
  align-items: center;
}

.committee-card--cta::before {
  background: radial-gradient(85% 65% at 50% 118%, rgba(217, 179, 116, 0.5), transparent 70%);
}

.committee-card--cta h3 {
  font-size: var(--step-3);
}

.committee-card--cta .arrow {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  margin-top: var(--space-s);
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-radius: 50%;
  font-size: 1.1rem;
  transition: transform var(--t-med) var(--ease-spring), background-color var(--t-med) var(--ease-out);
}

.committee-card--cta:hover .arrow {
  transform: translateX(5px);
  background: rgba(255, 255, 255, 0.14);
}

/* Cartes « atout / raison » */
.feature-card {
  position: relative;
  padding: clamp(1.5rem, 1.2rem + 1.2vw, 2.25rem);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  box-shadow: var(--shadow-xs);
  transition: transform var(--t-med) var(--ease-out), box-shadow var(--t-med) var(--ease-out),
    border-color var(--t-med) var(--ease-out);
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(194, 149, 74, 0.45);
  box-shadow: var(--shadow-s);
}

.feature-card__num {
  display: inline-grid;
  place-items: center;
  width: 44px;
  height: 44px;
  margin-bottom: var(--space-s);
  border-radius: 50%;
  background: var(--blue-100);
  color: var(--navy-700);
  font-family: var(--font-display);
  font-size: var(--step-1);
}

.feature-card h3,
.feature-card h4 {
  font-size: var(--step-2);
  color: var(--navy-800);
  margin-bottom: 0.5rem;
}

.feature-card p {
  color: var(--text-soft);
}

/* Cartes personnes (bureau) */
.person-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-s);
  padding: clamp(1.5rem, 1.2rem + 1vw, 2rem) var(--space-m);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  box-shadow: var(--shadow-xs);
  text-align: center;
  transition: transform var(--t-med) var(--ease-out), box-shadow var(--t-med) var(--ease-out);
}

.person-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-s);
}

.person-card__avatar {
  display: grid;
  place-items: center;
  width: clamp(96px, 22vw, 128px);
  aspect-ratio: 1;
  border-radius: 50%;
  background: linear-gradient(145deg, var(--blue-100), var(--paper-2));
  border: 1px dashed rgba(35, 91, 131, 0.45);
  color: var(--navy-700);
  font-family: var(--font-display);
  font-size: var(--step-3);
}

.person-card h3 {
  font-size: var(--step-1);
  color: var(--navy-800);
}

.person-card p {
  font-size: var(--step--1);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--brass-600);
}

/* ------------------------------------------------------ 9. BLOCS ÉDITORIAUX */
.split {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr));
  gap: clamp(1.75rem, 1.2rem + 3vw, 4rem);
  align-items: center;
}

.split + .split {
  margin-top: clamp(2.5rem, 1.8rem + 3.5vw, 5rem);
}

.split__media {
  position: relative;
  margin: 0;
  border-radius: var(--radius-m);
  overflow: hidden;
  box-shadow: var(--shadow-m);
}

.split__media img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  transition: transform var(--t-slow) var(--ease-out);
}

.split__media:hover img {
  transform: scale(1.04);
}

.split__media figcaption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 2.5rem 1.25rem 1rem;
  background: linear-gradient(transparent, rgba(7, 18, 30, 0.8));
  color: #fff;
  font-size: var(--step--1);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.split__placeholder {
  display: grid;
  place-items: center;
  min-height: 260px;
  background: linear-gradient(145deg, var(--paper-2), var(--paper));
  border: 1px solid var(--line-strong);
  color: var(--ink-muted);
  box-shadow: var(--shadow-s);
}

.split__placeholder span {
  padding: 0.65rem 1rem;
  border: 1px dashed var(--brass-accent);
  color: var(--brass-600);
  font-size: var(--step--1);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.split--reverse .split__media {
  order: -1;
}

.prose h2 {
  font-size: var(--step-4);
  color: var(--navy-800);
}

.prose h3 {
  font-size: var(--step-3);
  color: var(--navy-800);
}

.prose h4 {
  margin-top: 0.4rem;
  font-size: var(--step-2);
  font-style: italic;
  color: var(--brass-600);
}

.prose p {
  margin-top: var(--space-s);
  max-width: var(--measure);
  color: var(--text-soft);
  font-size: var(--step-1);
  line-height: 1.7;
}

.prose .btn-row,
.prose .link-arrow {
  margin-top: var(--space-m);
}

/* Bloc « ambition » de l'accueil */
.ambition {
  text-align: center;
}

.ambition__text {
  max-width: 62ch;
  margin-inline: auto;
}

.ambition__text p + p {
  margin-top: var(--space-m);
  font-size: var(--step-1);
  line-height: 1.7;
  color: var(--text-soft);
}

.ambition__text .btn-row {
  margin-top: var(--space-l);
}

/* Bloc manifeste */
.statement {
  max-width: 46ch;
  margin-inline: auto;
  text-align: center;
  font-family: var(--font-display);
  font-size: var(--step-3);
  font-style: italic;
  line-height: 1.35;
  color: var(--navy-800);
}

.statement::before {
  content: "\201C";
  display: block;
  font-size: 3.4em;
  line-height: 0.75;
  color: var(--brass-500);
  opacity: 0.55;
}

/* ------------------------------------------------------------------ 10. FAQ */
.faq-list {
  display: grid;
  gap: 0.75rem;
  max-width: 860px;
  margin-inline: auto;
}

.faq-item {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-s);
  box-shadow: var(--shadow-xs);
  overflow: hidden;
  transition: border-color var(--t-med) var(--ease-out), box-shadow var(--t-med) var(--ease-out);
}

.faq-item[open] {
  border-color: rgba(35, 91, 131, 0.35);
  box-shadow: var(--shadow-s);
}

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-s);
  padding: clamp(1rem, 0.9rem + 0.5vw, 1.35rem) clamp(1rem, 0.9rem + 0.6vw, 1.6rem);
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-size: var(--step-1);
  color: var(--navy-800);
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "";
  flex: none;
  width: 11px;
  height: 11px;
  border-right: 2px solid var(--navy-600);
  border-bottom: 2px solid var(--navy-600);
  transform: rotate(45deg) translate(-2px, -2px);
  transition: transform var(--t-med) var(--ease-out);
}

.faq-item[open] summary::after {
  transform: rotate(-135deg) translate(-3px, -3px);
}

.faq-item__body {
  padding: 0 clamp(1rem, 0.9rem + 0.6vw, 1.6rem) clamp(1.1rem, 1rem + 0.5vw, 1.5rem);
  color: var(--text-soft);
  max-width: var(--measure);
}

/* --------------------------------------------------------- 11. APPEL FINAL */
.cta {
  position: relative;
  padding-block: var(--space-2xl);
  text-align: center;
  color: #fff;
  background: linear-gradient(125deg, var(--navy-950), var(--navy-700) 50%, var(--navy-900));
  overflow: hidden;
  isolation: isolate;
}

.cta::before {
  content: "";
  position: absolute;
  inset: -40% -10% auto;
  height: 180%;
  z-index: -1;
  background: radial-gradient(45% 50% at 20% 30%, rgba(194, 149, 74, 0.28), transparent 70%),
    radial-gradient(40% 45% at 82% 70%, rgba(47, 124, 171, 0.35), transparent 70%);
}

.cta h2 {
  font-size: var(--step-5);
  font-style: italic;
}

.cta p {
  max-width: 52ch;
  margin: var(--space-s) auto var(--space-m);
  color: rgba(255, 255, 255, 0.84);
  font-size: var(--step-1);
}

.cta__note {
  margin-top: var(--space-m);
  font-size: var(--step--1);
  color: rgba(255, 255, 255, 0.6);
}

/* ---------------------------------------------------------- 12. PIED DE PAGE */
.site-footer {
  background: var(--navy-950);
  color: rgba(255, 255, 255, 0.72);
  padding-block: clamp(2.5rem, 2rem + 3vw, 4.5rem) var(--space-m);
  font-size: var(--step--1);
}

.site-footer__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 210px), 1fr));
  gap: var(--space-l);
  padding-bottom: var(--space-l);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.site-footer .brand {
  color: #fff;
  font-size: 1.5rem;
}

.site-footer__about p {
  margin-top: var(--space-s);
  max-width: 34ch;
  line-height: 1.7;
}

.site-footer h2 {
  font-family: var(--font-sans);
  font-size: var(--step--1);
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--brass-400);
  margin-bottom: var(--space-s);
}

.site-footer ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.55rem;
}

.site-footer a {
  color: inherit;
  text-decoration: none;
  transition: color var(--t-fast) var(--ease-out);
}

.site-footer a:hover {
  color: #fff;
}

.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-s);
  padding-top: var(--space-m);
  color: rgba(255, 255, 255, 0.62);
}

/* ------------------------------------------------------------ 13. MOUVEMENT */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 700ms var(--ease-out), transform 700ms var(--ease-out);
  transition-delay: var(--reveal-delay, 0ms);
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}

/* --------------------------------------------------- 14. POINTS DE RUPTURE */

/* Tablette : la navigation passe en tiroir */
@media (max-width: 900px) {
  .nav-toggle {
    display: block;
  }

  .nav-links {
    position: fixed;
    z-index: 95;
    top: 0;
    right: 0;
    bottom: 0;
    width: min(360px, 86vw);
    flex-direction: column;
    align-items: stretch;
    justify-content: center;
    gap: 0.25rem;
    padding: calc(var(--header-h) + 1.5rem) clamp(1.5rem, 5vw, 2.5rem) 2.5rem;
    background: linear-gradient(160deg, var(--navy-900), var(--navy-800));
    box-shadow: var(--shadow-l);
    transform: translateX(102%);
    visibility: hidden;
    transition: transform var(--t-med) var(--ease-out), visibility var(--t-med);
    overflow-y: auto;
  }

  body.nav-open .nav-links {
    transform: translateX(0);
    visibility: visible;
  }

  .nav-links a,
  .site-header.is-stuck .nav-links a {
    padding: 0.9rem 0;
    color: #fff;
    font-family: var(--font-display);
    font-size: var(--step-2);
    font-weight: 500;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0;
    transform: translateX(18px);
    transition: opacity var(--t-med) var(--ease-out), transform var(--t-med) var(--ease-out);
  }

  body.nav-open .nav-links a {
    opacity: 1;
    transform: none;
    transition-delay: calc(55ms * var(--i, 0) + 90ms);
  }

  .nav-links a::after {
    display: none;
  }

  .nav-links a[aria-current="page"] {
    color: var(--brass-400);
  }

  .nav-cta,
  .site-header.is-stuck .nav-cta {
    margin-top: var(--space-m);
    padding: 0.95rem 1.5rem !important;
    border: 0;
    border-radius: var(--radius-pill);
    background: linear-gradient(135deg, var(--brass-400), var(--brass-500));
    color: var(--navy-950) !important;
    font-family: var(--font-sans) !important;
    font-size: var(--step--1) !important;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    text-align: center;
  }

  .split--reverse .split__media {
    order: 0;
  }
}

/* Mobile */
@media (max-width: 620px) {
  :root {
    --header-h: 66px;
  }

  .hero {
    min-height: min(100svh, 720px);
    align-items: center;
  }

  .hero h1 {
    max-width: 12ch;
  }

  .hero .btn-row .btn {
    flex: 1 1 100%;
  }

  .facts {
    margin-top: -2rem;
  }

  .fact {
    text-align: left;
  }

  .committee-card {
    min-height: 250px;
  }

  .split__media img {
    aspect-ratio: 16 / 10;
  }

  .site-footer__bottom {
    flex-direction: column;
  }
}

/* Très petits écrans */
@media (max-width: 380px) {
  :root {
    --gutter: 1rem;
  }

  .brand {
    font-size: 1.15rem;
  }
}

/* Téléphone en paysage */
@media (max-height: 520px) and (orientation: landscape) {
  .hero {
    min-height: auto;
    padding-block: calc(var(--header-h) + 2rem) 3rem;
  }

  .nav-links {
    justify-content: flex-start;
  }
}

/* Grands écrans */
@media (min-width: 1800px) {
  .hero h1 {
    max-width: 15ch;
  }
}