body {
      display: flex;
      flex-direction: column;
      min-height: 100vh;
      font-family: Arial, sans-serif;
      margin: 0;
      background: #121025;
      color: #e4e4e7;
    }
    header {
      background: linear-gradient(90deg, #4e2a8e, #2e1a4c);
      color: #e4e4e7;
      padding: 10px 20px;
    }

    .boite-principale {
      max-width: 1000px;
      margin: 0 auto;
      padding: 0 15px;
    }

    .header-top {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
    }

    .header-top h1 {
      margin: 0;
      font-size: 26px;
      text-shadow: 1px 1px 3px rgba(0,0,0,0.5);
    }

    nav a {
      margin: 0 10px;
      color: #e4e4e7;
      text-decoration: none;
      font-weight: bold;
      transition: 0.3s;
    }

    nav a:hover {
      color: #e040fb;
      text-decoration: underline;
    }

    main {
      flex: 1;
      display: flex;
      justify-content: center;
      align-items: flex-start;
      padding: 20px;
    }

    #formulaire-profil {
      background: #2e1a4c;
      border-radius: 16px;
      box-shadow: 0 4px 12px rgba(0,0,0,0.6);
      padding: 30px;
      width: 100%;
      max-width: 800px;
    }

    h2 {
      text-align: center;
      font-size: 28px;
      color: #e040fb;
      margin-bottom: 25px;
      text-shadow: 1px 1px 3px rgba(0,0,0,0.3);
    }

    form {
      display: flex;
      flex-direction: column;
    }

    .champ {
      display: flex;
      flex-direction: column;
      margin-bottom: 15px;
    }

    label {
      font-weight: bold;
      margin-bottom: 5px;
    }

    input, textarea {
      padding: 10px;
      border-radius: 8px;
      border: none;
      background: #1b112e;
      color: #e4e4e7;
      font-size: 14px;
    }

    input[type="file"] {
      background: none;
      padding: 0;
    }

    textarea {
      resize: vertical;
      min-height: 80px;
    }

    .boutons {
      display: flex;
      justify-content: space-between;
      margin-top: 20px;
      gap: 10px;
    }

    button, .bouton-annuler {
      flex: 1;
      padding: 12px;
      border-radius: 8px;
      font-weight: bold;
      border: none;
      text-align: center;
      text-decoration: none;
      cursor: pointer;
      transition: 0.3s;
    }

    button {
      background: #e040fb;
      color: #121025;
    }

    button:hover {
      background: #d500f9;
    }

    .bouton-annuler {
      background: #444;
      color: #e4e4e7;
    }

    .bouton-annuler:hover {
      background: #666;
    }

    footer {
      background: linear-gradient(90deg, #4e2a8e, #2e1a4c);
      color: #e4e4e7;
      text-align: center;
      padding: 15px;
      margin-top: auto;
    }

    @media (max-width: 700px) {
      #formulaire-profil {
        padding: 20px;
      }
    }