* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  
  body {
    font-family: 'Arial', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #14d69c 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  
  .login-container {
    background: white;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 15px 35px rgba(0,0,0,0.1);
    width: 100%;
    max-width: 400px;
  }
  
  .logo {
    text-align: center;
    margin-bottom: 30px;
  }
  
  .logo h1 {
    color: #333;
    font-size: 24px;
  }
  
  .form-group {
    margin-bottom: 20px;
  }
  
  .form-group label {
    display: block;
    margin-bottom: 5px;
    color: #555;
    font-weight: bold;
  }
  
  .form-group input {
    width: 100%;
    padding: 12px;
    border: 2px solid #ddd;
    border-radius: 5px;
    font-size: 16px;
    transition: border-color 0.3s;
  }
  
  .form-group input:focus {
    outline: none;
    border-color: #667eea;
  }
  
  .btn {
    width: 100%;
    padding: 12px;
    background: linear-gradient(135deg, #667eea 0%, #14d69c 100%);
    color: white;
    border: none;
    border-radius: 5px;
    font-size: 16px;
    cursor: pointer;
    transition: transform 0.2s;
  }
  
  .btn:hover {
    transform: translateY(-2px);
  }
  
  .btn:active {
    transform: translateY(0);
  }
  
  .error-message {
    background: #fee;
    color: #c33;
    padding: 10px;
    border-radius: 5px;
    margin-bottom: 20px;
    display: none;
  }
  
  .loading {
    display: none;
    text-align: center;
    margin-top: 10px;
  }
  
  .footer {
    text-align: center;
    margin-top: 20px;
    color: #666;
  }