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

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: #f0f2f5;
  color: #222b45;
  line-height: 1.6;
}

header {
  display: flex;
  align-items: center;
  padding: 20px 40px;
  background-color: #0a1f44;
  color: #ffffff;
  position: sticky;
  top: 0;
  z-index: 1000;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.8rem;
  text-transform: uppercase;
  color: white;
}

.logo img {
  height: 80px;
  object-fit: contain;
}

nav {
  display: flex;
  flex-grow: 1;
  justify-content: flex-end;
  margin-left: 40px;
  position: relative;
}

.nav-list {
  list-style: none;
  display: flex;
  gap: 0;
  align-items: center;
}

.nav-list li {
  position: relative;
}

.nav-list li + li {
  border-left: 1px solid white;
}

.nav-list li a {
  color: #ffffff;
  text-decoration: none;
  font-weight: 600;
  padding: 0 20px;
  display: block;
  transition: color 0.3s ease;
}

.nav-list li a:hover {
  color: #3a85ff;
}

#burger {
  display: none;
  font-size: 28px;
  background: none;
  border: none;
  color: white;
  cursor: pointer;
  letter-spacing: 0.5em;
  margin-left: 20px;
}

/* Hero */
.hero {
  background: linear-gradient(135deg, #0a1f44, #144a82);
  color: white;
  padding: 100px 20px 60px;
  text-align: center;
}

.hero h1 {
  font-size: 2.2rem;
  margin-bottom: 20px;
  font-weight: 700;
}

.hero p {
  font-size: 1.3rem;
  max-width: 600px;
  margin: 0 auto;
  color: #d0d9ff;
}

/* Sections */
section {
  padding: 60px 20px;
  max-width: 1100px;
  margin: 0 auto;
}

h2 {
  font-size: 2rem;
  margin-bottom: 30px;
  text-align: center;
  color: #0a1f44;
}

/* Services */
.services-container {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
}

.service {
  background: #ffffff;
  padding: 25px;
  border-radius: 8px;
  box-shadow: 0 4px 8px rgb(10 31 68 / 0.15);
  flex: 1 1 280px;
  max-width: 320px;
  text-align: center;
  transition: box-shadow 0.3s ease;
}

.service:hover {
  box-shadow: 0 8px 20px rgb(58 133 255 / 0.4);
}

.service h3 {
  margin-bottom: 15px;
  color: #144a82;
}

/* References */
#references {
  background: linear-gradient(135deg, #0a1f44, #144a82);
  color: white;
  padding-bottom: 50px;
}

#references h2 {
  color: white;
  margin-bottom: 40px;
}

/* Carousel */
.carousel-wrapper {
  overflow: hidden;
  margin-top: 30px;
}

.carousel-track {
  display: flex;
  width: calc(9 * 200px * 2);
  animation: scroll 30s linear infinite;
  gap: 40px;
  align-items: center;
  padding: 20px 0;
  flex-wrap: nowrap;
  will-change: transform;
}

.carousel-track img {
  height: 60px;
  object-fit: contain;
  filter: grayscale(70%);
  transition: filter 0.3s ease;
}

.carousel-track img:hover {
  filter: grayscale(0%);
  cursor: pointer;
}

/* Animation */
@keyframes scroll {
  0% {
    transform: translateX(0);
  }
  100% {
    transform: translateX(calc(-50%));
  }
}

/* Contact Form */
#contact form {
  background: #ffffff;
  padding: 30px 25px;
  max-width: 600px;
  margin: 0 auto;
  border-radius: 8px;
  box-shadow: 0 6px 16px rgb(10 31 68 / 0.15);
  display: flex;
  flex-direction: column;
  gap: 15px;
}

#contact input[type="text"],
#contact input[type="email"],
#contact textarea {
  padding: 12px 15px;
  font-size: 1rem;
  border: 2px solid #cbd6f2;
  border-radius: 6px;
  transition: border-color 0.3s ease;
  color: #222b45;
  background-color: #f8faff;
}

#contact input[type="text"]:focus,
#contact input[type="email"]:focus,
#contact textarea:focus {
  border-color: #3a85ff;
  outline: none;
  background-color: #ffffff;
}

#contact button {
  background-color: #3a85ff;
  color: white;
  border: none;
  padding: 14px;
  font-size: 1.1rem;
  font-weight: 700;
  border-radius: 6px;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

#contact button:hover {
  background-color: #0a1f44;
}

#formMessage {
  max-width: 600px;
  margin: 15px auto 0;
  font-weight: 600;
  text-align: center;
  color: #0a1f44;
}

/* Focus visible (accessibilité) */
a:focus,
button:focus,
input:focus,
textarea:focus {
  outline: 2px solid #3a85ff;
  outline-offset: 2px;
}

/* Responsive */
@media (max-width: 768px) {
  .nav-list {
    display: none;
    flex-direction: column;
    background-color: #0a1f44;
    position: absolute;
    top: 60px;
    right: 0;
    width: 220px;
    border-radius: 0 0 0 8px;
    padding: 10px 0;
    box-shadow: 0 4px 10px rgba(0,0,0,0.3);
    opacity: 0;
    transform: translateY(-10px);
    transition: opacity 0.4s ease, transform 0.4s ease;
  }

  .nav-list.open {
    display: flex;
    opacity: 1;
    transform: translateY(0);
  }

  .nav-list li {
    margin: 15px 0;
    border-left: none !important; /* Supprime la ligne blanche verticale */
  }

  .nav-list li a {
    padding: 10px 20px;
    display: block;
    font-size: 1.1rem;
    border-bottom: 1px solid white; /* Appliqué à tous */
  }

  /* Supprimé la règle qui enlevait le border-bottom au dernier lien */

  #burger {
    display: block;
    margin-left: 20px;
    letter-spacing: 0.5em;
  }

  .services-container {
    flex-direction: column;
    align-items: center;
  }
}