/* 🌐 Style général */
body {
  font-family: 'Poppins', sans-serif;
  margin: 0;
  background-color: #f8fafc;
  color: #1e293b;
  line-height: 1.6;
}

/* 🧭 En-tête */
header {
  background-color: #0f172a;
  color: white;
  text-align: center;
  padding: 40px 20px;
}

header h1 {
  font-size: 2rem;
  margin-bottom: 10px;
}

header p {
  font-size: 1.1rem;
  color: #94a3b8;
  margin-bottom: 20px;
}

/* 🔗 Menu */
nav {
  margin-top: 15px;
}

nav a {
  color: #f1f5f9;
  text-decoration: none;
  margin: 0 15px;
  font-weight: 600;
  transition: color 0.3s ease, border-bottom 0.3s ease;
}

nav a:hover {
  color: #38bdf8;
}

nav a.active {
  color: #38bdf8;
  border-bottom: 2px solid #38bdf8;
  padding-bottom: 2px;
}

/* 🧱 Section d’intro */
#intro {
  text-align: center;
  padding: 60px 20px;
}

#intro h2 {
  color: #0f172a;
  font-size: 1.8rem;
}

#intro p {
  max-width: 700px;
  margin: 20px auto;
  font-size: 1rem;
  color: #334155;
}

.btn {
  background-color: #0ea5e9;
  color: white;
  padding: 10px 20px;
  border-radius: 6px;
  text-decoration: none;
  font-weight: bold;
  transition: background-color 0.3s ease;
}

.btn:hover {
  background-color: #0369a1;
}

/* 💬 Section Contact */
.contact {
  max-width: 700px;
  margin: 50px auto;
  padding: 20px;
  background: white;
  border-radius: 10px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.05);
}

.contact h2 {
  color: #0f172a;
  margin-bottom: 20px;
}

.contact a {
  color: #0ea5e9;
  text-decoration: none;
}

.contact a:hover {
  text-decoration: underline;
}

/* 🦶 Pied de page */
footer {
  background-color: #0f172a;
  color: #94a3b8;
  text-align: center;
  padding: 20px 10px;
  margin-top: 50px;
}

footer a {
  color: #38bdf8;
  text-decoration: none;
}

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

/* 📱 Responsive (mobile) */
@media (max-width: 768px) {
  header h1 {
    font-size: 1.6rem;
  }

  nav a {
    display: inline-block;
    margin: 8px;
  }

  #intro h2 {
    font-size: 1.4rem;
  }
}