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

html, body {
  height: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  background: radial-gradient(circle at top left, #e2f0ff 0%, #f5f7fb 40%, #ffffff 100%);
  color: #1f4f7a;
}

.overlay {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.content-card {
  text-align: center;
  max-width: 600px;
}

.logo {
  max-width: 320px;
  width: 100%;
  height: auto;
  margin-bottom: 32px;
}

h1 {
  font-size: 2rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.subtitle {
  font-size: 0.98rem;
  line-height: 1.6;
  margin-bottom: 24px;
}

.contact {
  font-size: 0.9rem;
  line-height: 1.5;
  color: #1f4f7a;
}

.contact a {
  color: #1f4f7a;
  text-decoration: none;
  border-bottom: 1px solid rgba(31, 79, 122, 0.3);
}

.contact a:hover {
  border-bottom-color: rgba(31, 79, 122, 0.8);
}

/* Responsive */
@media (max-width: 480px) {
  .logo {
    max-width: 260px;
    margin-bottom: 24px;
  }

  h1 {
    font-size: 1.6rem;
  }

  .subtitle {
    font-size: 0.9rem;
  }

  .contact {
    font-size: 0.85rem;
  }
}