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

    body {
      font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica', 'Arial', sans-serif;
      background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
      min-height: 100vh;
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 1rem;
    }

    .login-container {
      background: white;
      border-radius: 1rem;
      box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
      width: 100%;
      max-width: 400px;
      padding: 2.5rem;
    }

    .login-header {
      text-align: center;
      margin-bottom: 2rem;
    }

    .login-header h1 {
      font-size: 1.75rem;
      color: #1a202c;
      margin-bottom: 0.5rem;
    }

    .login-header p {
      color: #718096;
      font-size: 0.875rem;
    }

    .form-group {
      margin-bottom: 1.5rem;
    }

    label {
      display: block;
      color: #374151;
      font-size: 0.875rem;
      font-weight: 500;
      margin-bottom: 0.5rem;
    }

    input {
      width: 100%;
      padding: 0.75rem 1rem;
      border: 2px solid #e5e7eb;
      border-radius: 0.5rem;
      font-size: 1rem;
      transition: all 0.3s ease;
      outline: none;
    }

    input:focus {
      border-color: #667eea;
      box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
    }

    input.error {
      border-color: #ef4444;
    }

    .error-message {
      color: #ef4444;
      font-size: 0.75rem;
      margin-top: 0.25rem;
      display: none;
    }

    .error-message.show {
      display: block;
    }

    .remember-forgot {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 1.5rem;
      font-size: 0.875rem;
    }

    .remember-me {
      display: flex;
      align-items: center;
      gap: 0.5rem;
      cursor: pointer;
    }

    .remember-me input[type="checkbox"] {
      width: auto;
      cursor: pointer;
    }

    .forgot-password {
      color: #667eea;
      text-decoration: none;
      font-weight: 500;
    }

    .forgot-password:hover {
      text-decoration: underline;
    }

    .login-button {
      width: 100%;
      padding: 0.875rem;
      background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
      color: white;
      border: none;
      border-radius: 0.5rem;
      font-size: 1rem;
      font-weight: 600;
      cursor: pointer;
      transition: transform 0.2s ease, box-shadow 0.2s ease;
      margin-bottom: 1rem;
    }

    .login-button:hover {
      transform: translateY(-2px);
      box-shadow: 0 10px 20px rgba(102, 126, 234, 0.3);
    }

    .login-button:active {
      transform: translateY(0);
    }

    .login-button:disabled {
      opacity: 0.6;
      cursor: not-allowed;
      transform: none;
    }

    .signup-link {
      text-align: center;
      color: #718096;
      font-size: 0.875rem;
    }

    .signup-link a {
      color: #667eea;
      text-decoration: none;
      font-weight: 600;
    }

    .signup-link a:hover {
      text-decoration: underline;
    }

    .success-message {
      background: #10b981;
      color: white;
      padding: 1rem;
      border-radius: 0.5rem;
      margin-bottom: 1rem;
      display: none;
      text-align: center;
    }

    .success-message.show {
      display: block;
    }

    @media (max-width: 480px) {
      .login-container {
        padding: 2rem 1.5rem;
      }

      .remember-forgot {
        flex-direction: column;
        gap: 0.75rem;
        align-items: flex-start;
      }
    }