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

body {
  background-color: #111;
  color: #70d6ff;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  min-height: 100vh;
  padding-top: 130px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

h1 {
  font-size: 3rem;
  text-align: center;
  text-shadow: 0 0 15px rgba(112, 214, 255, 0.7);
}

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: #111;
  padding: 10px 0;
  z-index: 999;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}

.navbar-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 20px;
}

.menu-toggle {
  display: none;
  font-size: 2rem;
  cursor: pointer;
  color: #70d6ff;
}

.navbar ul.menu {
  display: flex;
  justify-content: center;
  gap: 30px;
  list-style: none;
  flex-wrap: wrap;
}

.navbar a {
  color: #70d6ff;
  font-weight: bold;
  text-decoration: none;
  font-size: 1.1rem;
  transition: color 0.3s;
}

.navbar a:hover {
  color: white;
}

@media screen and (max-width: 768px) {
  .menu-toggle {
    display: block;
  }

  .navbar ul.menu {
    display: none;
    flex-direction: column;
    background-color: #111;
    position: absolute;
    top: 60px;
    width: 100%;
    left: 0;
    padding: 10px 0;
    border-top: 1px solid #70d6ff;
    z-index: 999;
  }

  .navbar ul.menu.show {
    display: flex;
  }

  .navbar ul.menu li {
    text-align: center;
    margin: 10px 0;
  }
}

.btn-accueil {
  position: fixed;
  top: 60px;
  left: 50%;
  transform: translateX(-50%);
  background-color: #70d6ff;
  color: white;
  padding: 10px 25px;
  border-radius: 12px;
  text-decoration: none;
  font-weight: bold;
  font-size: 16px;
  z-index: 998;
}

.service {
  background: rgba(112, 214, 255, 0.05);
  border-radius: 15px;
  padding: 30px;
  margin: 40px 0;
  max-width: 650px;
  width: 90%;
  box-shadow: 0 0 20px rgba(112, 214, 255, 0.3);
}

.description-service {
  font-style: italic;
  font-size: 1.2rem;
  margin: 10px 0 20px 0;
  color: #a0dfff;
  text-align: center;
}

.btn-voir-service {
  display: inline-block;
  margin-top: 15px;
  background-color: #70d6ff;
  color: #111;
  padding: 10px 20px;
  border-radius: 10px;
  text-decoration: none;
  font-weight: bold;
  transition: background-color 0.3s;
}

.btn-voir-service:hover {
  background-color: #4ab0d9;
  color: white;
}

.scroll-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  background-color: #70d6ff;
  color: #111;
  border: none;
  border-radius: 50%;
  font-size: 1.5rem;
  padding: 10px 20px;
  cursor: pointer;
  box-shadow: 0 0 10px rgba(112, 214, 255, 0.5);
  transition: all 0.3s ease;
}
.scroll-top:hover {
  transform: scale(1.1);
  box-shadow: 0 0 20px rgba(112, 214, 255, 0.9);
}