* {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }

    body {
      font-family: 'Arial', sans-serif;
      background: url('../img/bg.png') no-repeat center center fixed;
      background-size: cover;
      display: flex;
      align-items: center;
      justify-content: center;
      height: 100vh;
      color: #333;
      padding: 15px;
    }

    .login-container {
      background: rgba(255, 255, 255, 0.9);
      border-radius: 15px;
      padding: 40px 20px;
      box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
      width: 100%;
      max-width: 400px;
      animation: fadeIn 1s ease-in-out;
    }

    .login-container h2 {
      font-size: 24px;
      font-weight: bold;
      text-align: center;
      color: #007bff;
      margin-bottom: 20px;
    }

    .form-group {
      margin-bottom: 20px;
      position: relative;
    }

    .form-group label {
      display: block;
      font-weight: bold;
      margin-bottom: 5px;
      color: #333;
    }

    .form-group input {
      width: 100%;
      padding: 12px 15px;
      border: 1px solid #ccc;
      border-radius: 8px;
      font-size: 16px;
      transition: border-color 0.3s ease;
    }

    .form-group input:focus {
      border-color: #007bff;
      outline: none;
      box-shadow: 0 0 5px rgba(0, 123, 255, 0.5);
    }

    .form-group .toggle-password {
      position: absolute;
      right: 15px;
      top: 66%;
      transform: translateY(-50%);
      cursor: pointer;
      color: #888;
      font-size: 20px;
      transition: color 0.3s ease;
    }

    .form-group .toggle-password:hover {
      color: #007bff;
    }

    .btn-login {
      width: 100%;
      background-color: #007bff;
      color: #fff;
      border: none;
      padding: 14px;
      border-radius: 8px;
      font-size: 16px;
      cursor: pointer;
      font-weight: bold;
      transition: background-color 0.3s ease, box-shadow 0.3s ease;
    }

    .btn-login:hover {
      background-color: #0056b3;
      box-shadow: 0 4px 10px rgba(0, 123, 255, 0.3);
    }

    .error {
      background: #f8d7da;
      color: #842029;
      border: 1px solid #f5c2c7;
      padding: 10px;
      border-radius: 8px;
      font-size: 14px;
      margin-bottom: 15px;
    }

    /* Responsive */
    @media (max-width: 600px) {
      .login-container {
        padding: 30px 15px;
      }

      .form-group input {
        font-size: 14px;
        padding: 10px;
      }

      .btn-login {
        padding: 12px;
        font-size: 14px;
      }
    }

    @keyframes fadeIn {
      from {
        opacity: 0;
        transform: scale(0.9);
      }
      to {
        opacity: 1;
        transform: scale(1);
      }
    }