:root {
  color-scheme: light;
  --bg: #f8fafc;
  --ink: #0f172a;
  --muted: #64748b;
  --accent: #0f766e;
  --card: #ffffff;
  --line: #e2e8f0;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--ink);
}

#app {
  max-width: 42rem;
  margin: 0 auto;
  padding: 1.25rem;
}

header h1 { margin: 0 0 .25rem; font-size: 1.6rem; }
#status { margin: 0 0 1rem; color: var(--muted); }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: .9rem;
  padding: 1rem;
}

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

.row { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }

form { display: grid; gap: .75rem; }

label { display: grid; gap: .3rem; font-size: .9rem; color: var(--muted); }

input, select {
  font: inherit;
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: .55rem;
  padding: .55rem .65rem;
}

button.secondary {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
}

.error { color: #b91c1c; }

button {
  background: var(--accent);
  color: #fff;
  border: 0;
  border-radius: .6rem;
  padding: .7rem 1rem;
  font: inherit;
}

:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }