:root {
      --primary-green: #2ecc71;
      --dark-green: #27ae60;
      --light-green: #e8f5e9;
      --white: #ffffff;
      --gray-100: #f5f5f5;
      --gray-200: #eeeeee;
      --gray-300: #e0e0e0;
      --gray-700: #616161;
      --gray-900: #212121;
      --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
      --transition: all 0.3s ease;
    }
    
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    
    body {
      font-family: 'Roboto', sans-serif;
      background-color: var(--gray-100);
      color: var(--gray-900);
      height: 100vh;
      display: flex;
      align-items: center;
      justify-content: center;
    }
    
    .login-container {
      width: 100%;
      max-width: 360px;
      padding: 2rem;
      background-color: var(--white);
      border-radius: 12px;
      box-shadow: var(--shadow);
    }
    
    .logo-container {
      display: flex;
      justify-content: center;
      margin-bottom: 1.5rem;
    }
    
    .logo {
      max-width: 50%;
      height: auto;
    }
    
    .login-title {
      font-size: 1.5rem;
      font-weight: 500;
      text-align: center;
      color: var(--gray-900);
      margin-bottom: 1.5rem;
      position: relative;
    }
    
    .login-title::after {
      content: '';
      position: absolute;
      bottom: -8px;
      left: 50%;
      transform: translateX(-50%);
      width: 40px;
      height: 3px;
      background-color: var(--primary-green);
      border-radius: 3px;
    }
    
    .form-group {
      margin-bottom: 1.25rem;
    }
    
    .form-label {
      display: block;
      margin-bottom: 0.5rem;
      font-size: 0.875rem;
      color: var(--gray-700);
    }
    
    .form-input {
      width: 100%;
      padding: 0.75rem;
      font-size: 1rem;
      border: 1px solid var(--gray-300);
      border-radius: 8px;
      background-color: var(--gray-200);
      transition: var(--transition);
    }
    
    .form-input:focus {
      outline: none;
      border-color: var(--primary-green);
      background-color: var(--white);
      box-shadow: 0 0 0 3px rgba(46, 204, 113, 0.2);
    }
    
    .error-message {
      color: #e74c3c;
      font-size: 0.875rem;
      margin-top: 0.5rem;
    }
    
    .login-button {
      width: 100%;
      padding: 0.75rem;
      background-color: var(--primary-green);
      color: var(--white);
      font-size: 1rem;
      font-weight: 500;
      border: none;
      border-radius: 8px;
      cursor: pointer;
      transition: var(--transition);
    }
    
    .login-button:hover {
      background-color: var(--dark-green);
    }
    
    @media (max-width: 480px) {
      .login-container {
        padding: 1.5rem;
        box-shadow: none;
        max-width: 100%;
      }
      
      body {
        background-color: var(--white);
      }
    }