/* ===== STYLE GÉNÉRAL ===== */
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    
    body {
      font-family: Arial, sans-serif;
      background-color: #0e0f12;
      color: #e9ecf1;
    }
    
    /* ===== EN-TÊTE ===== */
    header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 16px 20px;
      background-color: #0b0d10;
      border-bottom: 1px solid #222833;
    }
    
    header .brand {
      display: flex;
      gap: 12px;
      align-items: center;
    }
    
    header .brand img {
      height: 32px;
    }
    
    header .brand span {
      font-weight: bold;
      font-size: 18px;
    }
    
    header a {
      color: #6ea8fe;
      text-decoration: none;
    }
    
    /* ===== CONTENU PRINCIPAL ===== */
    main {
      max-width: 980px;
      margin: 40px auto;
      padding: 0 16px;
      display: grid;
      grid-template-columns: 1fr;
      gap: 24px;
    }
    
    .card {
      background-color: #151922;
      border: 1px solid #222833;
      border-radius: 14px;
      padding: 24px;
    }
    
    .title {
      font-size: 1.4rem;
      margin: 0 0 14px;
    }
    
    .muted {
      color: #99a1b3;
      font-size: 0.95rem;
    }
    
    /* ===== ONGLETS ===== */
    .tabbar {
      display: flex;
      gap: 10px;
      margin: 12px 0 18px;
    }
    
    .auth-tab {
      padding: 10px 14px;
      border-radius: 10px;
      border: 1px solid #2a3140;
      background-color: #10141c;
      cursor: pointer;
      color: #cfd6e4;
    }
    
    .auth-tab.is-active {
      background-color: #172033;
      border-color: #2f3a51;
      color: #fff;
    }
    
    /* ===== FORMULAIRES ===== */
    .auth-form {
      display: none;
    }
    
    .auth-form.is-active {
      display: block;
    }
    
    .field {
      margin: 14px 0;
    }
    
    label {
      display: block;
      margin-bottom: 6px;
      color: #d9deea;
      font-size: 0.95rem;
    }
    
    input[type="text"],
    input[type="email"],
    input[type="password"] {
      width: 100%;
      padding: 12px;
      border-radius: 10px;
      border: 1px solid #2a3140;
      background-color: #0f131a;
      color: #e9ecf1;
      outline: none;
      font-size: 16px;
    }
    
    input::placeholder {
      color: #7d889c;
    }
    
    .password-wrap {
      display: flex;
      gap: 6px;
      align-items: stretch;
    }
    
    .toggle-visibility {
      padding: 0 12px;
      border-radius: 10px;
      border: 1px solid #2a3140;
      background-color: #0f131a;
      color: #cfd6e4;
      cursor: pointer;
    }
    
    .btn-primary {
      margin-top: 10px;
      width: 100%;
      padding: 12px 14px;
      border-radius: 12px;
      border: 1px solid #3a65d0;
      background-color: #1e3d85;
      color: #fff;
      font-weight: 600;
      cursor: pointer;
      font-size: 16px;
    }
    
    .btn-primary:hover {
      background-color: #2a4a95;
    }
    
    .btn-primary:disabled {
      opacity: 0.7;
      cursor: default;
    }
    
    .error {
      color: #ff6b6b;
      font-size: 0.9rem;
      min-height: 1.1em;
      margin: 6px 2px 0;
    }
    
    /* ===== GRILLE ===== */
    .grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
    }
    
    @media (max-width: 900px) {
      .grid {
        grid-template-columns: 1fr;
      }
    }
    
    .note {
      margin-top: 8px;
    }