:root {
  color-scheme: light dark;
  --bg: #f4f6f8;
  --card: #ffffff;
  --text: #1f2933;
  --muted: #5f6b7a;
  --accent: #007dba;
  --error: #b42318;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12161b;
    --card: #1c2229;
    --text: #e6e9ed;
    --muted: #9aa5b1;
    --accent: #4fb3e8;
    --error: #f97066;
  }
}

body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.5 system-ui, sans-serif;
}

main {
  width: min(360px, calc(100vw - 32px));
  padding: 32px;
  box-sizing: border-box;
  background: var(--card);
  border-radius: 8px;
  box-shadow: 0 1px 4px rgb(0 0 0 / 15%);
}

h1 {
  margin: 0 0 8px;
  font-size: 24px;
}

#status {
  margin: 0 0 16px;
  color: var(--muted);
}

form {
  display: grid;
  gap: 6px;
}

input {
  margin-bottom: 10px;
  padding: 8px 10px;
  font: inherit;
  color: inherit;
  background: transparent;
  border: 1px solid var(--muted);
  border-radius: 4px;
}

button {
  padding: 10px;
  font: inherit;
  font-weight: 600;
  color: #fff;
  background: var(--accent);
  border: 0;
  border-radius: 4px;
  cursor: pointer;
}

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

#error {
  min-height: 1.5em;
  margin: 4px 0 0;
  color: var(--error);
}