body {
  font-family: 'Roboto', Arial, sans-serif;
  background: #f9f9f9;
  margin: 0;
  padding: 0;
}
a:link {
color: #0A00FE; /* Unvisited link */
}
a:visited {
color: #0700c0; /* Visited link */
}
a:hover {
color: #151430; /* Mouse over link */
}
a:active {
color: #0700c0/* Selected link */
}
.protected-section {
  max-width: 700px;
  margin: 2rem auto;
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.07);
  padding: 2rem;
}
.is-hidden { display: none; }
.footer {
  background: #fff;
  border-top: 1px solid #eee;
  padding: 2rem 0 1rem 0;
  margin-top: 3rem;
}
.footer .content {
  text-align: center;
  color: #888;
  font-size: 1rem;
}
.footer a { color: #1976d2; }
.footer a:hover { color: #1565c0; }
.logo-img {
  max-width: 120px;
  margin: 0 auto 1.5rem auto;
  display: block;
}
@media (max-width: 600px) {
  .protected-section, .main-content {
    padding: 1rem 0.5rem;
  }
  .logo-img {
    max-width: 80px;
  }
}