/* RESET */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  
  body {
    font-family: 'Segoe UI', sans-serif;
    background: #fff;
    color: #222;
    line-height: 1.6;
    scroll-behavior: smooth;
    overflow-x: hidden;
  }
  
  /* NAVIGATION */
  nav {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 1000;
  }
  
  nav .logo-nav {
    font-weight: bold;
    font-size: 1.2rem;
  }
  
  nav ul {
    list-style: none;
    display: flex;
    gap: 1.5rem;
  }
  
  nav ul li a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
  }
  
  nav ul li a:hover {
    color: #ccc;
  }
  
  header {
    position: relative;
    height: 100vh;
    overflow: hidden;
    transition: background 0.4s ease;
    padding-top: 70px; /* espace pour la nav fixe */
  }
  header.scrolled {
    background: rgba(0, 0, 0, 0.8);
  }
  
  #background-video {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: -1;
    max-width: 100%;
    max-height: 100%;
    overflow: hidden;
  }
  
  .overlay {
    position: relative;
    z-index: 2;
    height: calc(100vh - 70px);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    background: rgba(0, 0, 0, 0.4);
    padding: 0 1rem;
  }
  
  .logo {
    max-width: 180px;
    aspect-ratio: 1 / 1;
    object-fit: cover;
    margin-bottom: 1rem;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.05);
    
  }

  .slogan {
    font-size: 2rem;
    color: #fff;
    margin-bottom: 1.5rem;
    text-shadow: 0 0 10px rgba(0,0,0,0.8);
  }
  
  .lang-switch {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
  }
  
  .lang-switch button {
    padding: 0.5rem 1.2rem;
    border: none;
    border-radius: 5px;
    background: #fff;
    font-weight: bold;
    cursor: pointer;
    transition: background 0.3s;
  }
  
  .lang-switch button:hover {
    background: #ddd;
  }
  
  /* MAIN SECTIONS */
  main section {
    padding: 4rem 2rem;
    text-align: center;
    max-width: 1000px;
    margin: 0 auto;
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
  }
  
  main section.show {
    opacity: 1;
    transform: translateY(0);
  }
  
  h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
  }
  
  ul {
    list-style: none;
    padding: 0;
  }
  
  ul li {
    margin-bottom: 0.8rem;
    font-size: 1.1rem;
  }
  
  p {
    font-size: 1rem;
    margin-bottom: 2rem;
  }
  
  /* VIDEO */
  video {
    max-width: 90%;
    border-radius: 10px;
    margin-top: 1rem;
    box-shadow: 0 0 15px rgba(0,0,0,0.3);
  }
  
  /* RESPONSIVE */
  @media (max-width: 768px) {
    .slogan {
      font-size: 1.3rem;
    }
  
    .logo {
      max-width: 130px;
    }
  
    .lang-switch button {
      padding: 0.4rem 0.9rem;
      font-size: 0.9rem;
    }
  
    nav ul {
      flex-direction: column;
      gap: 0.8rem;
    }
  
    main section {
      padding: 3rem 1rem;
    }
  }
  .logo-nav {
    display: flex;
    align-items: center;
    gap: 0.6rem;
  }
  
  .mini-logo {
    height: 40px;
    width: 40px;
    object-fit: contain;
  }
  .menu-toggle {
    display: none;
    font-size: 1.8rem;
    cursor: pointer;
    color: white;
  }
  
  @media (max-width: 768px) {
    .menu-toggle {
      display: block;
    }
  
    nav ul.nav-links {
      display: none;
      flex-direction: column;
      background: rgba(0, 0, 0, 0.95);
      position: fixed;
      top: 0;
      left: 0;
      height: 100vh;
      width: 100vw;
      text-align: center;
      justify-content: center;
      align-items: center;
      z-index: 999;
    }
    
  
    nav ul.nav-links.active {
      display: flex;
    }
  
    nav ul li {
      margin: 0.5rem 0;
    }
  }
  .slogan,
  [data-fr] {
    transition: opacity 0.3s ease;
  }
  .nav-links a {
    transition: opacity 0.3s ease;
  }
  .contact-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 2rem;
    margin-top: 2rem;
  }
  
  .contact-info, .contact-form {
    flex: 1 1 45%;
  }
  
  .contact-info p {
    font-size: 1rem;
    color: #333;
    margin-bottom: 1rem;
    text-align: left;
  }
  
  .contact-info a {
    color: #0d6efd;
    text-decoration: none;
  }
  
  .contact-form form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
  }
  
  .contact-form input,
  .contact-form textarea {
    padding: 0.8rem;
    border: 1px solid #ccc;
    border-radius: 8px;
    font-size: 1rem;
    width: 100%;
  }
  
  .contact-form button {
    padding: 0.8rem;
    background-color: #130c1a;
    color: white;
    border: none;
    border-radius: 8px;
    font-weight: bold;
    cursor: pointer;
    transition: background 0.3s;
  }
  
  .contact-form button:hover {
    background-color: #094db1;
  }
  
  /* Responsive */
  @media (max-width: 768px) {
    .contact-container {
      flex-direction: column;
    }
  
    .contact-info, .contact-form {
      flex: 1 1 100%;
    }
  
    .contact-info p {
      text-align: center;
    }
  }