:root {
  --bg-start: #0a4672;
  --bg-end: #0e7c93;
  --card: rgba(255, 255, 255, 0.1);
  --card-border: rgba(255, 255, 255, 0.22);
  --text: #ffffff;
  --muted: rgba(255, 255, 255, 0.75);
  --accent: #c81e45;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px 16px;
  background: linear-gradient(160deg, var(--bg-start), var(--bg-end));
  color: var(--text);
  font-family:
    system-ui,
    -apple-system,
    'Segoe UI',
    Roboto,
    sans-serif;
  text-align: center;
}

main {
  width: 100%;
  max-width: 420px;
}

.icon {
  width: 112px;
  height: 112px;
  border-radius: 26px;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.25);
}

h1 {
  margin: 20px 0 8px;
  font-size: 32px;
  letter-spacing: 0.5px;
}

p {
  margin: 0 0 24px;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.5;
}

.actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.button {
  display: block;
  padding: 15px 20px;
  border-radius: 14px;
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
  color: var(--text);
  border: 1px solid var(--card-border);
  background: var(--card);
}

.button.primary {
  background: var(--accent);
  border-color: var(--accent);
}

.button:focus-visible {
  outline: 3px solid #fff;
  outline-offset: 3px;
}

footer {
  margin-top: 40px;
  font-size: 13px;
  color: var(--muted);
}

footer a {
  color: var(--text);
}