/* ==========================================================================
   Modélisation en Santé Publique — Feuille de style globale
   ========================================================================== */

:root {
  --bleu-fonce: #0b3954;
  --bleu: #1f6f8b;
  --bleu-clair: #99d4cd;
  --vert: #2a9d8f;
  --vert-fonce: #21867a;
  --accent: #e9c46a;
  --texte: #1c2b33;
  --texte-doux: #4a5b64;
  --fond: #f6f9fb;
  --blanc: #ffffff;
  --bordure: #e1e8ed;
  --ombre: 0 6px 24px rgba(11, 57, 84, 0.08);
  --ombre-forte: 0 12px 40px rgba(11, 57, 84, 0.16);
  --rayon: 14px;
  --transition: 0.25s ease;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  color: var(--texte);
  background: var(--fond);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: var(--bleu);
  text-decoration: none;
  transition: color var(--transition);
}

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

.conteneur {
  width: 100%;
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
}

h1, h2, h3, h4 {
  line-height: 1.25;
  color: var(--bleu-fonce);
  font-weight: 700;
}

section {
  padding: 80px 0;
}

/* ----------------------------- En-tête / Nav ---------------------------- */
.site-entete {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--bordure);
}

.barre-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  max-width: 1140px;
  margin: 0 auto;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  font-size: 1.15rem;
  color: var(--bleu-fonce);
}

.logo-marque {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--bleu), var(--vert));
  color: #fff;
}

.logo-texte small {
  display: block;
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--texte-doux);
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.menu {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.menu a {
  color: var(--texte);
  font-weight: 600;
  font-size: 0.95rem;
}

.menu a:hover,
.menu a.actif {
  color: var(--vert);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 50px;
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  border: none;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
}

.btn-primaire {
  background: linear-gradient(135deg, var(--bleu), var(--vert));
  color: #fff;
}

.btn-primaire:hover {
  color: #fff;
  transform: translateY(-2px);
  box-shadow: var(--ombre-forte);
}

.btn-clair {
  background: #fff;
  color: var(--bleu-fonce);
  border: 1px solid var(--bordure);
}

.btn-clair:hover {
  color: var(--bleu-fonce);
  background: var(--fond);
}

/* -------------------------------- Héros --------------------------------- */
.heros {
  background: linear-gradient(135deg, #0b3954 0%, #1f6f8b 60%, #2a9d8f 100%);
  color: #fff;
  position: relative;
  overflow: hidden;
}

.heros::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.12) 0, transparent 40%),
    radial-gradient(circle at 10% 80%, rgba(233, 196, 106, 0.18) 0, transparent 35%);
  pointer-events: none;
}

.heros .conteneur {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
  padding-top: 70px;
  padding-bottom: 80px;
}

.heros h1 {
  color: #fff;
  font-size: clamp(2rem, 4vw, 3.1rem);
  margin-bottom: 18px;
}

.heros p.intro {
  font-size: 1.15rem;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 28px;
  max-width: 560px;
}

.heros .badge {
  display: inline-block;
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: #fff;
  font-size: 0.85rem;
  font-weight: 600;
  padding: 7px 16px;
  border-radius: 50px;
  margin-bottom: 22px;
  letter-spacing: 0.4px;
}

.heros-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.heros-visuel {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 20px;
  padding: 28px;
  backdrop-filter: blur(4px);
}

.stat-grille {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.stat {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  padding: 18px;
  text-align: center;
}

.stat .chiffre {
  font-size: 1.9rem;
  font-weight: 800;
  color: var(--accent);
}

.stat .label {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.85);
}

/* ------------------------------ Titres bloc ----------------------------- */
.entete-section {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 54px;
}

.entete-section .surtitre {
  display: inline-block;
  color: var(--vert);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.entete-section h2 {
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  margin-bottom: 14px;
}

.entete-section p {
  color: var(--texte-doux);
  font-size: 1.05rem;
}

/* ------------------------------- Cartes --------------------------------- */
.grille-cartes {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 26px;
}

.carte {
  background: var(--blanc);
  border: 1px solid var(--bordure);
  border-radius: var(--rayon);
  padding: 32px 28px;
  box-shadow: var(--ombre);
  transition: transform var(--transition), box-shadow var(--transition);
}

.carte:hover {
  transform: translateY(-6px);
  box-shadow: var(--ombre-forte);
}

.carte .icone {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(31, 111, 139, 0.12), rgba(42, 157, 143, 0.12));
  color: var(--bleu);
  margin-bottom: 20px;
}

.carte h3 {
  font-size: 1.25rem;
  margin-bottom: 12px;
}

.carte p {
  color: var(--texte-doux);
  font-size: 0.98rem;
}

.carte ul {
  list-style: none;
  margin-top: 14px;
}

.carte ul li {
  position: relative;
  padding-left: 26px;
  margin-bottom: 8px;
  color: var(--texte-doux);
  font-size: 0.95rem;
}

.carte ul li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--vert);
  font-weight: 800;
}

/* ------------------------------- Bandes --------------------------------- */
.bande-claire {
  background: var(--blanc);
}

.bande-degrade {
  background: linear-gradient(135deg, var(--bleu-fonce), var(--bleu));
  color: #fff;
}

.bande-degrade h2,
.bande-degrade h3 {
  color: #fff;
}

/* ----------------------------- Démarche / étapes ------------------------ */
.etapes {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 26px;
  counter-reset: etape;
}

.etape {
  background: var(--blanc);
  border: 1px solid var(--bordure);
  border-radius: var(--rayon);
  padding: 30px 26px;
  position: relative;
}

.etape::before {
  counter-increment: etape;
  content: counter(etape);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--bleu), var(--vert));
  color: #fff;
  font-weight: 800;
  font-size: 1.1rem;
  margin-bottom: 16px;
}

.etape h3 {
  font-size: 1.15rem;
  margin-bottom: 10px;
}

.etape p {
  color: var(--texte-doux);
  font-size: 0.95rem;
}

/* ----------------------------- Liste outils ----------------------------- */
.outils {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}

.outil-puce {
  background: var(--blanc);
  border: 1px solid var(--bordure);
  border-radius: 50px;
  padding: 10px 20px;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--bleu-fonce);
  box-shadow: var(--ombre);
}

/* ------------------------------- Appel CTA ------------------------------ */
.cta-final {
  text-align: center;
}

.cta-final h2 {
  color: #fff;
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  margin-bottom: 16px;
}

.cta-final p {
  color: rgba(255, 255, 255, 0.9);
  font-size: 1.1rem;
  max-width: 620px;
  margin: 0 auto 30px;
}

.cta-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ------------------------------- Contact -------------------------------- */
.contact-grille {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 26px;
}

.contact-carte {
  background: var(--blanc);
  border: 1px solid var(--bordure);
  border-radius: var(--rayon);
  padding: 34px 28px;
  text-align: center;
  box-shadow: var(--ombre);
  transition: transform var(--transition), box-shadow var(--transition);
}

.contact-carte:hover {
  transform: translateY(-6px);
  box-shadow: var(--ombre-forte);
}

.contact-carte .icone {
  width: 62px;
  height: 62px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 18px;
  color: #fff;
}

.icone.bleu { background: linear-gradient(135deg, var(--bleu), var(--bleu-fonce)); }
.icone.vert { background: linear-gradient(135deg, var(--vert), var(--vert-fonce)); }
.icone.jaune { background: linear-gradient(135deg, var(--accent), #d9a93f); }

.contact-carte h3 {
  font-size: 1.2rem;
  margin-bottom: 8px;
}

.contact-carte p {
  color: var(--texte-doux);
  margin-bottom: 14px;
  font-size: 0.95rem;
}

.contact-carte a.lien-fort {
  font-weight: 700;
  font-size: 1.05rem;
  word-break: break-word;
}

/* -------------------------------- Pied ---------------------------------- */
.pied {
  background: var(--bleu-fonce);
  color: rgba(255, 255, 255, 0.82);
  padding: 60px 0 24px;
}

.pied-grille {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.pied h4 {
  color: #fff;
  font-size: 1.05rem;
  margin-bottom: 16px;
}

.pied ul {
  list-style: none;
}

.pied ul li {
  margin-bottom: 10px;
}

.pied a {
  color: rgba(255, 255, 255, 0.82);
}

.pied a:hover {
  color: var(--accent);
}

.pied .logo {
  color: #fff;
  margin-bottom: 14px;
}

.pied .logo-texte small {
  color: rgba(255, 255, 255, 0.6);
}

.pied-bas {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding-top: 22px;
  text-align: center;
  font-size: 0.88rem;
  color: rgba(255, 255, 255, 0.6);
}

/* ------------------------------ En-tête page ---------------------------- */
.entete-page {
  background: linear-gradient(135deg, var(--bleu-fonce), var(--bleu));
  color: #fff;
  padding: 70px 0;
  text-align: center;
}

.entete-page h1 {
  color: #fff;
  font-size: clamp(2rem, 4vw, 2.8rem);
  margin-bottom: 12px;
}

.entete-page p {
  color: rgba(255, 255, 255, 0.9);
  max-width: 640px;
  margin: 0 auto;
  font-size: 1.1rem;
}

.fil-ariane {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 14px;
}

.fil-ariane a {
  color: rgba(255, 255, 255, 0.85);
}

/* ------------------------------ Texte riche ----------------------------- */
.bloc-texte {
  max-width: 820px;
  margin: 0 auto;
}

.bloc-texte h2 {
  font-size: 1.6rem;
  margin: 36px 0 14px;
}

.bloc-texte p {
  color: var(--texte-doux);
  margin-bottom: 16px;
}

.bloc-texte ul {
  margin: 0 0 18px 22px;
  color: var(--texte-doux);
}

.bloc-texte ul li {
  margin-bottom: 8px;
}

/* ------------------------------ Responsive ------------------------------ */
@media (max-width: 880px) {
  .heros .conteneur {
    grid-template-columns: 1fr;
  }
  .pied-grille {
    grid-template-columns: 1fr 1fr;
  }
  .menu {
    display: none;
  }
}

@media (max-width: 560px) {
  section {
    padding: 56px 0;
  }
  .pied-grille {
    grid-template-columns: 1fr;
  }
}