body {
    margin: 0;
    font-family: 'Arial', sans-serif;
    background-color: #111;
    color: #fff;
  }
  
  nav {
    display: flex;
    justify-content: space-between;
    padding: 1rem 2rem;
    background: #000;
    position: sticky;
    top: 0;
    z-index: 1000;
  }
  
  nav .logo {
    font-size: 1.5em;
    font-weight: bold;
  }
  
  nav ul {
    list-style: none;
    display: flex;
    gap: 20px;
  }
  
  nav ul li a {
    color: white;
    text-decoration: none;
  }
  
  nav ul li a:hover {
    color: #f0c000;
  }
  
  .menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
  }
  
  .menu-toggle span {
    height: 3px;
    width: 25px;
    background: #fff;
    margin: 4px 0;
    transition: 0.4s;
  }
  
  .menu-toggle.open span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }
  
  .menu-toggle.open span:nth-child(2) {
    opacity: 0;
  }
  
  .menu-toggle.open span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
  }
  
  @media screen and (max-width: 768px) {
    nav ul {
      position: absolute;
      top: 60px;
      right: 0;
      background-color: #000;
      flex-direction: column;
      width: 200px;
      padding: 20px;
      display: none;
    }
  
    nav ul.active {
      display: flex;
    }
  
    .menu-toggle {
      display: flex;
    }
  }
  
  .tarifs-section {
    padding-top: 100px;
    padding: 50px 20px;
    text-align: center;
  }
  
  .tarifs-section h1 {
    font-size: 2.5em;
    margin-bottom: 40px;
    color: #f0c000;
  }
  
  .tarif-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    justify-content: center;
  }
  
  .card {
    background-color: #1e1e1e;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 0 15px rgba(240, 192, 0, 0.2);
    transition: transform 0.3s, box-shadow 0.3s;
  }
  
  .card:hover {
    transform: translateY(-10px);
    box-shadow: 0 0 20px rgba(240, 192, 0, 0.5);
  }
  
  .card h2 {
    color: #f0c000;
    font-size: 1.5em;
    margin-bottom: 15px;
  }
  
  .card p {
    font-size: 1em;
    line-height: 1.6;
  }