/* === BASE === */
body {
  font-family: "Helvetica Neue", Arial, sans-serif;
  margin: 0;
  padding: 0;
  background: #fafafa;
  color: #333;
  line-height: 1.6;
}

/* === LOGOS === */
.logos-container {
  background: #fff;
  text-align: center;
  padding: 0.8em 0;
  border-bottom: 1px solid #ddd;
}

.logos {
  max-width: 90%;
  height: auto;
}

/* === HEADER === */
header {
  background: #003366;
  color: white;
  padding: 1.2em 0.8em;
  text-align: center;
}

header h1 {
  margin: 0.2em 0;
  font-size: 1.8em;
}

nav {
  margin-top: 0.5em;
}

nav a {
  color: #ffcc00;
  text-decoration: none;
  margin: 0 0.8em;
  font-weight: bold;
  transition: color 0.2s ease;
}

nav a:hover {
  color: #ffffff;
  text-decoration: underline;
}

/* === MAIN CONTENT === */
main {
  max-width: 900px;
  margin: 2em auto;
  padding: 2em;
  background: white;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
  border-radius: 10px;
}

section {
  margin-bottom: 2.5em;
}

h3, h4 {
  color: #003366;
  margin-bottom: 0.5em;
}

ul {
  margin-left: 1.2em;
}

/* === IMAGE DE SYNTHÈSE === */
.synthese {
  display: block;
  margin: 2em auto;
  max-width: 100%;
  height: auto;
  border-radius: 10px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.15);
}

/* === FOOTER === */
footer {
  text-align: center;
  padding: 1.2em;
  background: #003366;
  color: white;
  font-size: 0.9em;
}

footer a {
  color: #ffcc00;
  text-decoration: none;
}

footer a:hover {
  text-decoration: underline;
}

/* === RESPONSIVE === */
@media (max-width: 700px) {
  nav a {
    display: inline-block;
    margin: 0.4em;
  }

  main {
    padding: 1.5em;
  }

  .logos {
    max-width: 100%;
  }

  .grid {
  display: flex;
  gap: 2em;
  flex-wrap: wrap;
}

.col {
  flex: 1;
  min-width: 300px;
  background: #f8f8f8;
  padding: 1.2em;
  border-radius: 8px;
  box-shadow: 0 0 8px rgba(0,0,0,0.1);
}

.col h4 {
  color: #003366;
  margin-bottom: 0.8em;
}

.col ul {
  list-style-type: disc;
  padding-left: 1.2em;
}