:root {
  color-scheme: light dark;
  --bg: #FFFFFF;
  --fg: #15181D;
  --muted: #5B6472;
  --rule: #D9DEE5;
  --field: #F5F7FA;
  --accent: #2F6FDB;
  --on-accent: #FFFFFF;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0E1116;
    --fg: #F2F4F7;
    --muted: #A3ABB8;
    --rule: #2A313C;
    --field: #161B22;
    --accent: #8AB4F8;
    --on-accent: #0E1116;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 2rem 1rem 3rem;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

main {
  max-width: 36rem;
  margin: 0 auto;
}

h1 {
  font-size: 1.7rem;
  line-height: 1.2;
  margin: 0 0 0.5rem;
}

label {
  display: block;
  font-weight: 600;
  margin: 1.25rem 0 0.4rem;
}

select,
textarea {
  width: 100%;
  font: inherit;
  color: var(--fg);
  background: var(--field);
  border: 1px solid var(--rule);
  border-radius: 8px;
  padding: 0.6rem 0.7rem;
}

textarea {
  resize: vertical;
  min-height: 10rem;
}

select:focus,
textarea:focus,
button:focus-visible,
a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

#check {
  margin: 1rem 0;
  min-height: 65px;
}

button {
  font: inherit;
  font-weight: 600;
  color: var(--on-accent);
  background: var(--accent);
  border: 0;
  border-radius: 8px;
  padding: 0.65rem 1.4rem;
  cursor: pointer;
}

button:disabled {
  opacity: 0.6;
  cursor: default;
}

#status:empty {
  display: none;
}

#done {
  font-size: 1.1rem;
  margin: 2rem 0;
}

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

.muted {
  font-size: 0.9rem;
  margin: 0.3rem 0 0;
  text-align: right;
}

footer {
  margin-top: 2.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--rule);
  font-size: 0.9rem;
}

footer p {
  margin: 0.3rem 0;
}

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

[hidden] {
  display: none !important;
}