:root {
  color-scheme: light dark;
  --bg: #f6f1ea;
  --surface: #fffdf9;
  --ink: #1c120c;
  --muted: #6b584c;
  --accent: #c45a1a;
  --line: rgba(28, 18, 12, 0.1);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #16100c;
    --surface: #211812;
    --ink: #f6eee6;
    --muted: #cbb8aa;
    --accent: #ef8a4a;
    --line: rgba(246, 238, 230, 0.12);
  }
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.55;
}

main {
  max-width: 42rem;
  margin: 0 auto;
  padding: 2.5rem 1.25rem 4rem;
}

a {
  color: var(--accent);
}

header p,
.muted,
footer {
  color: var(--muted);
}

h1 {
  font-size: 2rem;
  margin: 0 0 0.4rem;
}

h2 {
  font-size: 1.15rem;
  margin: 1.75rem 0 0.4rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 1.1rem 1.2rem;
  margin: 1.2rem 0;
}

.nav {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin: 1rem 0 1.5rem;
}

.email {
  font-weight: 600;
}

footer {
  margin-top: 2.5rem;
  font-size: 0.9rem;
}