:root {
  --bleu: #1f4e79;
  --bleu-clair: #2e6da4;
  --fond: #f6f8fa;
  --texte: #2c3338;
  --gris: #6b7480;
  --blanc: #ffffff;
  --bord: #e1e6eb;
}

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

body {
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  color: var(--texte);
  background: var(--fond);
  line-height: 1.65;
}

/* ---------- En-tete ---------- */
header { background: var(--bleu); color: var(--blanc); }

.header-inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 1.1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.logo {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-decoration: none;
  color: var(--blanc);
}

.logo span { font-weight: 300; opacity: 0.85; }

nav { display: flex; gap: 0.3rem; flex-wrap: wrap; }

nav a {
  color: var(--blanc);
  text-decoration: none;
  padding: 0.45rem 0.9rem;
  border-radius: 6px;
  font-size: 0.95rem;
  opacity: 0.9;
  transition: background 0.15s, opacity 0.15s;
}

nav a:hover { background: rgba(255,255,255,0.15); opacity: 1; }
nav a.actif { background: rgba(255,255,255,0.22); opacity: 1; font-weight: 600; }

/* ---------- Bandeau ---------- */
.hero {
  background: linear-gradient(135deg, var(--bleu) 0%, var(--bleu-clair) 100%);
  color: var(--blanc);
  text-align: center;
  padding: 3.5rem 1.5rem 4rem;
}

.hero h1 { font-size: 2.1rem; font-weight: 700; margin-bottom: 0.6rem; }
.hero p { font-size: 1.1rem; opacity: 0.92; max-width: 620px; margin: 0 auto; }

/* ---------- Contenu ---------- */
main { max-width: 960px; margin: 0 auto; padding: 2.5rem 1.5rem 3.5rem; }

h2 { color: var(--bleu); font-size: 1.45rem; margin-bottom: 1rem; }
h3 { color: var(--bleu-clair); font-size: 1.1rem; margin-bottom: 0.4rem; }
p + p { margin-top: 0.8rem; }

.cartes {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.2rem;
  margin-top: 1.8rem;
}

.carte {
  background: var(--blanc);
  border: 1px solid var(--bord);
  border-radius: 10px;
  padding: 1.5rem;
  text-decoration: none;
  color: var(--texte);
  transition: box-shadow 0.15s, transform 0.15s;
  display: block;
}

.carte:hover { box-shadow: 0 4px 14px rgba(31,78,121,0.12); transform: translateY(-2px); }
.carte .icone { font-size: 1.8rem; margin-bottom: 0.5rem; display: block; }
.carte p { font-size: 0.92rem; color: var(--gris); margin-top: 0.3rem; }

.encart {
  background: var(--blanc);
  border: 1px solid var(--bord);
  border-left: 4px solid var(--bleu-clair);
  border-radius: 8px;
  padding: 1.3rem 1.5rem;
  margin-top: 1.5rem;
}

.encart.note { border-left-color: #c9a227; }

/* ---------- Actualites ---------- */
.actu {
  background: var(--blanc);
  border: 1px solid var(--bord);
  border-radius: 10px;
  padding: 1.4rem 1.6rem;
  margin-bottom: 1.2rem;
}

.actu .date {
  font-size: 0.85rem;
  color: var(--gris);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ---------- Boutons ---------- */
.bouton {
  display: inline-block;
  background: var(--bleu-clair);
  color: var(--blanc);
  text-decoration: none;
  padding: 0.7rem 1.5rem;
  border-radius: 8px;
  font-weight: 600;
  margin-top: 1rem;
  transition: background 0.15s;
}

.bouton:hover { background: var(--bleu); }
.bouton.whatsapp { background: #25d366; }
.bouton.whatsapp:hover { background: #1ebe5a; }

/* ---------- Pied de page ---------- */
footer {
  background: var(--bleu);
  color: rgba(255,255,255,0.75);
  text-align: center;
  padding: 1.4rem 1.5rem;
  font-size: 0.88rem;
}

footer a { color: rgba(255,255,255,0.9); }

/* ---------- Page fichiers (iframe) ---------- */
body.page-fichiers { display: flex; flex-direction: column; min-height: 100vh; }
.cadre-fichiers { flex: 1; display: flex; }
.cadre-fichiers iframe { flex: 1; width: 100%; border: none; min-height: 75vh; }

@media (max-width: 600px) {
  .hero h1 { font-size: 1.6rem; }
  .header-inner { justify-content: center; }
}