/* ===== Variables ===== */
:root {
  --primaire: #0b3d91;
  --secondaire: #00a8e8;
  --fond: #f5f7fa;
  --texte: #222;
  --gris: #666;
  --blanc: #fff;
}

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

body {
  font-family: "Segoe UI", Arial, sans-serif;
  background: var(--fond);
  color: var(--texte);
  line-height: 1.6;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

main {
  flex: 1;
}

a {
  color: var(--primaire);
}

.conteneur {
  width: 90%;
  max-width: 1100px;
  margin: 0 auto;
}

/* ===== En-tête et navigation ===== */
header {
  background: var(--primaire);
  color: var(--blanc);
  padding: 1rem 0;
}

header .conteneur {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.logo {
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--blanc);
  text-decoration: none;
}

.logo span {
  color: var(--secondaire);
}

nav ul {
  list-style: none;
  display: flex;
  gap: 1.5rem;
}

nav a {
  color: var(--blanc);
  text-decoration: none;
  padding-bottom: 4px;
}

nav a:hover,
nav a.actif {
  border-bottom: 2px solid var(--secondaire);
}

/* ===== Bannière ===== */
.banniere {
  background: linear-gradient(135deg, var(--primaire), var(--secondaire));
  color: var(--blanc);
  text-align: center;
  padding: 5rem 1rem;
}

.banniere h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.banniere p {
  font-size: 1.2rem;
  max-width: 650px;
  margin: 0 auto 2rem;
}

.bouton {
  display: inline-block;
  background: var(--blanc);
  color: var(--primaire);
  padding: 0.8rem 1.8rem;
  border-radius: 30px;
  text-decoration: none;
  font-weight: bold;
  border: none;
  cursor: pointer;
  font-size: 1rem;
  transition: transform 0.2s;
}

.bouton:hover {
  transform: translateY(-2px);
}

.bouton-plein {
  background: var(--primaire);
  color: var(--blanc);
}

/* ===== Sections ===== */
section {
  padding: 4rem 0;
}

.titre-section {
  text-align: center;
  font-size: 2rem;
  color: var(--primaire);
  margin-bottom: 0.5rem;
}

.sous-titre {
  text-align: center;
  color: var(--gris);
  margin-bottom: 2.5rem;
}

/* ===== Grille de cartes ===== */
.grille {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
}

.carte {
  background: var(--blanc);
  border-radius: 10px;
  padding: 2rem;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  transition: transform 0.2s;
}

.carte:hover {
  transform: translateY(-5px);
}

.carte .icone {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.carte h3 {
  color: var(--primaire);
  margin-bottom: 0.5rem;
}

.carte p {
  color: var(--gris);
}

.etiquette {
  display: inline-block;
  background: var(--fond);
  color: var(--primaire);
  font-size: 0.8rem;
  padding: 0.2rem 0.7rem;
  border-radius: 20px;
  margin-top: 1rem;
  margin-right: 0.3rem;
}

/* ===== Chiffres clés ===== */
.chiffres {
  background: var(--blanc);
  text-align: center;
}

.chiffres strong {
  display: block;
  font-size: 2.5rem;
  color: var(--secondaire);
}

/* ===== Contact ===== */
.contact-grille {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 2rem;
}

.infos p {
  margin-bottom: 1rem;
}

form {
  background: var(--blanc);
  padding: 2rem;
  border-radius: 10px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

label {
  display: block;
  font-weight: bold;
  margin-bottom: 0.3rem;
}

input,
textarea,
select {
  width: 100%;
  padding: 0.7rem;
  border: 1px solid #ccc;
  border-radius: 6px;
  font-family: inherit;
  font-size: 1rem;
  margin-bottom: 1.2rem;
}

input:focus,
textarea:focus,
select:focus {
  outline: 2px solid var(--secondaire);
  border-color: transparent;
}

/* ===== Pied de page ===== */
footer {
  background: #0a1f44;
  color: #ccc;
  text-align: center;
  padding: 1.5rem 0;
  font-size: 0.9rem;
}

/* ===== Responsive ===== */
@media (max-width: 700px) {
  header .conteneur {
    justify-content: center;
  }

  .banniere h1 {
    font-size: 1.8rem;
  }

  .contact-grille {
    grid-template-columns: 1fr;
  }
}