body {
      font-family: 'Segoe UI', sans-serif;
    }
    /* HERO VIDEO */
    .hero {
      position: relative;
      height: 100vh;
      overflow: hidden;
      color: white;
      text-align: center;
    }
    .hero video {
      position: absolute;
      top: 50%;
      left: 50%;
      min-width: 100%;
      min-height: 100%;
      width: auto;
      height: auto;
      z-index: -1;
      transform: translate(-50%, -50%);
      object-fit: cover;
    }
    .hero .overlay {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: rgba(0,0,0,0.3);
      z-index: 1;
    }
    .hero-content {
      position: relative;
      z-index: 2;
      top: 50%;
      transform: translateY(-50%);
      padding: 20px;
    }
    .btn-whatsapp {
      background-color: #25D366;
      color: white;
      font-weight: bold;
    }
    .btn-whatsapp:hover {
      background-color: #1ebe5b;
      color: white;
    }
    .feature-icon {
      font-size: 2.5rem;
      color: #0d6efd;
    }
    footer {
      background: #111;
      color: #bbb;
      padding: 20px;
      text-align: center;
    }
      /* Bouton flottant centré */
  .contact-fixed {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    z-index: 9999;
    text-align: center;
    background: rgba(255, 255, 255, 0.9); /* fond léger pour contraste */
    padding: 10px;
    box-shadow: 0 -2px 8px rgba(0,0,0,0.15);
  }
  .contact-fixed .btn {
    width: 90%;        /* largeur large mais avec marges */
    max-width: 400px;  /* limite sur desktop */
    border-radius: 50px;
    font-weight: bold;
    padding: 14px;
  }
    /* Amélioration visibilité des champs du formulaire */
  .form-control {
    border: 2px solid #ccc;       /* bordure plus épaisse */
    border-radius: 8px;           /* angles arrondis */
    padding: 12px;                /* confort visuel */
  }
  .form-control:focus {
    border-color: #0d6efd;        /* bleu bootstrap au focus */
    box-shadow: 0 0 6px rgba(13,110,253,0.5); /* halo bleu focus */
  }
  .form-label {
    font-weight: 600;
  }