body {
      background: #f8f9fa;
      font-family: 'Segoe UI', sans-serif;
    }
    .card {
      border: none;
    }
    .card-header h4 {
      text-transform: uppercase;
      letter-spacing: 1px;
    }
    body {
      background: #f2f6f9;
    }
    
    #logo {
      max-height: 100px;
      border-radius:20px;
    }
    #splash-screen {
      animation: fadeIn 0.8s ease-in-out;
    }
    @keyframes fadeIn {
      from { opacity: 0 }
      to { opacity: 1 }
    }
    .hidden {
      display: none !important;
    }
    
    input[type="text"],
    input[type="tel"],
    input[type="email"],
    textarea {
      text-transform: uppercase;
    }
    #btn-afficher-formulaire {
  margin-bottom: 10px;
}