:root {
  color-scheme: light dark;
}

body {
  font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  background: #0f172a;
  color: #e2e8f0;
}

main {
  width: min(560px, 92vw);
  background: #1e293b;
  border-radius: 12px;
  padding: 1.5rem;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.35);
}

form {
  display: grid;
  gap: 0.75rem;
}

input,
button {
  font: inherit;
  padding: 0.65rem 0.75rem;
  border-radius: 8px;
  border: 1px solid #334155;
}

button {
  cursor: pointer;
  color: #0f172a;
  background: #38bdf8;
  border: none;
  font-weight: 600;
}

#submission-status {
  min-height: 1.5rem;
}