:root {
  color-scheme: light dark;
  --bg: #0f1419;
  --fg: #e8eef4;
  --muted: #93a0ad;
  --card: #1a222b;
  --accent: #6ee0b0;
  --border: #2b3642;
  font-family:
    Inter,
    system-ui,
    sans-serif;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
}

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

header,
main {
  max-width: 880px;
  margin: 0 auto;
  padding: 1.25rem;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

nav {
  display: flex;
  gap: 1rem;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem;
  margin: 0.75rem 0;
}

input,
textarea,
button,
select {
  font: inherit;
  border-radius: 8px;
  border: 1px solid var(--border);
  padding: 0.5rem 0.7rem;
  background: var(--bg);
  color: var(--fg);
}

button,
a.button {
  background: var(--accent);
  color: #102018;
  border: 0;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
}

.muted {
  color: var(--muted);
}

.row {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}