:root {
  --brand: #00A8EC;
  --brand-dark: #0077B3;
  --text: #222831;
  --text-muted: #55606b;
  --bg: #f4f9fc;
  --card-bg: #ffffff;
  --border: #e1eaf1;
}

* {
  box-sizing: border-box;
}

html, body {
  height: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    Helvetica, Arial, sans-serif;
  line-height: 1.55;
  padding: 24px;
}

.card {
  width: 100%;
  max-width: 620px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-top: 6px solid var(--brand);
  border-radius: 12px;
  box-shadow: 0 8px 28px rgba(0, 40, 70, 0.08);
  padding: 40px 36px;
  text-align: center;
}

.card.card--text {
  text-align: left;
}

.logo {
  height: 120px;
  width: auto;
  margin: 0 auto 28px;
  display: block;
}

h1 {
  font-size: 1.65rem;
  line-height: 1.35;
  color: var(--brand-dark);
  margin: 0 0 18px;
}

h2 {
  font-size: 1.25rem;
  color: var(--brand-dark);
  margin: 28px 0 10px;
}

p {
  color: var(--text);
  margin: 0 0 18px;
  font-size: 1rem;
}

a {
  color: var(--brand-dark);
  text-decoration: underline;
}

a:hover,
a:focus {
  text-decoration: none;
}

.kontakt {
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  font-size: 0.95rem;
  color: var(--text-muted);
}

.kontakt strong {
  color: var(--text);
}

.zurueck {
  display: inline-block;
  margin-bottom: 24px;
  font-size: 0.95rem;
}

footer {
  margin-top: 28px;
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-muted);
}

footer a {
  color: var(--brand-dark);
  margin: 0 8px;
}

.placeholder {
  color: var(--text-muted);
  font-style: italic;
}

@media (max-width: 480px) {
  .card {
    padding: 28px 20px;
    border-radius: 10px;
  }

  .logo {
    height: 90px;
    margin-bottom: 20px;
  }

  h1 {
    font-size: 1.35rem;
  }

  footer a {
    display: inline-block;
    margin: 4px 8px;
  }
}