/* Variables CSS pour une meilleure maintenance */
:root {
    --primary-color: #4179c8;
    --primary-color-dark: #2c5ca5;
    --secondary-color: #0B6FAE;
    --text-color: #333333;
    --light-text: #666666;
    --border-color: #dcdcdc;
    --error-color: #e74c3c;
    --error-bg: #fadbd8;
    --white: #ffffff;
    --light-gray: #f7f9fc;
    --shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
  }
  
  /* Style du corps de page */
  body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--light-gray);
    color: var(--text-color);
    margin: 0;
    line-height: 1.6;
  }
  
  /* Container centré */
  .centered {
    min-height: calc(100vh - 80px); /* Ajustez en fonction de la hauteur de votre navbar */
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 40px 20px;
  }
  
  /* Message d'erreur */
  .errorMessage {
    width: 100%;
    max-width: 450px;
    margin-bottom: 30px;
    padding: 15px 20px;
    background-color: var(--error-bg);
    color: var(--error-color);
    border-left: 4px solid var(--error-color);
    border-radius: 5px;
    font-size: 16px;
    text-align: left;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
    position: relative;
    animation: slideIn 0.3s ease-out;
  }
  
  @keyframes slideIn {
    from {
      opacity: 0;
      transform: translateY(-20px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
  
  /* Formulaire de connexion */
  .login-form {
    width: 100%;
    max-width: 450px;
    margin-top: 20px;
    padding: 40px;
    background-color: var(--white);
    border-radius: 12px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    animation: fadeIn 0.5s ease-out;
  }
  
  .login-form:hover {
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.15);
    transform: translateY(-5px);
  }
  
  @keyframes fadeIn {
    from {
      opacity: 0;
    }
    to {
      opacity: 1;
    }
  }
  
  /* Titre du formulaire */
  .login-form h1 {
    color: var(--primary-color);
    text-align: center;
    margin-bottom: 30px;
    font-size: 28px;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
  }
  
  /* Contrôles de formulaire */
  .form-control {
    margin: 0 0 25px 0;
  }
  
  .form-control label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--text-color);
    font-size: 14px;
    padding-bottom: 0;
  }
  
  .form-control input,
  .form-control textarea {
    display: block;
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background-color: #f9f9fb;
    font-size: 15px;
    color: var(--text-color);
    transition: var(--transition);
    box-sizing: border-box;
  }
  
  .form-control input:focus,
  .form-control textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(65, 121, 200, 0.2);
    background-color: var(--white);
  }
  
  .form-control input::placeholder {
    color: #9ca3af;
  }
  
  .form-control input.invalid {
    border-color: var(--error-color);
    background-color: rgba(231, 76, 60, 0.05);
  }
  
  /* Container de validation */
  .validate-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-top: 15px;
  }
  
  /* Bouton de validation */
  .validate-button {
    width: 100%;
    padding: 12px 0;
    background-color: var(--primary-color);
    color: var(--white);
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-transform: uppercase;
    letter-spacing: 1px;
  }
  
  .validate-button:hover {
    background-color: var(--primary-color-dark);
    transform: translateY(-2px);
  }
  
  .validate-button:active {
    transform: translateY(0);
  }
  
  /* Lien mot de passe oublié */
  .validate-container a {
    margin-top: 20px;
    color: var(--primary-color);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
  }
  
  .validate-container a:hover {
    color: var(--primary-color-dark);
    text-decoration: underline;
  }
  
  /* Responsive design */
  @media screen and (max-width: 768px) {
    .login-form {
      padding: 30px;
    }
    
    .errorMessage {
      max-width: 100%;
    }
  }
  
  @media screen and (max-width: 480px) {
    .login-form {
      padding: 25px 20px;
    }
    
    .login-form h1 {
      font-size: 24px;
    }
    
    .form-control input {
      padding: 10px 12px;
    }
  }