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

body {
  font-family: "Segoe UI", sans-serif;
  background: #f5f7fa;
  color: #1a1a1a;
  line-height: 1.6;
}

/* CONTAINERS */
.container {
  width: 90%;
  max-width: 1200px;
  margin: auto;
}

/* HEADER */
.header {
  background: #ffffff;
  border-bottom: 1px solid #e5e5e5;
  position: sticky;
  top: 0;
  z-index: 10;
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 0;
}

.logo {
  font-size: 1.4rem;
  font-weight: 700;
  color: #0a3d62;
}

nav a {
  margin-left: 20px;
  text-decoration: none;
  color: #333;
  font-weight: 500;
  transition: 0.2s;
}

nav a:hover {
  color: #0a3d62;
}

/* HERO */
.hero {
  background: linear-gradient(135deg, #0a3d62, #1e5799);
  color: white;
  padding: 120px 0;
  text-align: center;
}

.hero h1 {
  font-size: 2.8rem;
  margin-bottom: 10px;
}

.hero p {
  font-size: 1.2rem;
  opacity: 0.9;
  margin-bottom: 25px;
}

.btn {
  display: inline-block;
  background: #0a3d62;
  color: white;
  padding: 12px 28px;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 600;
  transition: 0.2s;
}

.btn:hover {
  background: #08324f;
}

/* SECTIONS */
.section {
  padding: 70px 0;
}

.section h2 {
  text-align: center;
  margin-bottom: 40px;
  font-size: 2rem;
  color: #0a3d62;
}

.section.alt {
  background: #ffffff;
}

/* GRID */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 25px;
}

/* CARDS */
.card {
  background: white;
  padding: 25px;
  border-radius: 10px;
  border: 1px solid #e5e5e5;
  transition: 0.2s;
}

.card:hover {
  transform: translateY(-4px);
  border-color: #0a3d62;
}

.card h3 {
  margin-bottom: 10px;
  color: #0a3d62;
}

/* EXPERTISE */
.expertise-text {
  text-align: center;
  max-width: 700px;
  margin: auto;
  margin-bottom: 25px;
}

.expertise-list {
  list-style: none;
  text-align: center;
}

.expertise-list li {
  margin-bottom: 10px;
  font-size: 1.1rem;
}

/* FORMULAIRE */
.form {
  max-width: 500px;
  margin: auto;
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.form input,
.form textarea {
  padding: 12px;
  border: 1px solid #ccc;
  border-radius: 6px;
  font-size: 1rem;
}

.status {
  text-align: center;
  margin-top: 10px;
  font-weight: 600;
}

/* FOOTER */
.footer {
  text-align: center;
  padding: 20px 0;
  background: #0a3d62;
  color: white;
  margin-top: 40px;
}