:root {
  --fg: #1b1b1f;
  --muted: #4a4a55;
  --bg: #ffffff;
  --surface: #f3f4f7;
  --border: #8a8d99;
  --accent: #0b4fb3;
  --accent-fg: #ffffff;
  --error-bg: #fdecec;
  --error-fg: #8a1414;
  --warn-bg: #fff4d6;
  --warn-fg: #5c4200;
  --focus: #b8003c;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 100%;
  line-height: 1.5;
  color: var(--fg);
  background: var(--bg);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-width: 0;
  overflow-wrap: anywhere;
}

[hidden] {
  display: none !important;
}

.bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.brand {
  font-weight: 600;
}

main {
  max-width: 48rem;
  margin: 0 auto;
  padding: 1rem;
}

h1 {
  font-size: 1.5rem;
  margin: 0.5rem 0 1rem;
}

h2 {
  font-size: 1.25rem;
}

h3 {
  font-size: 1.05rem;
}

label {
  display: block;
  font-weight: 600;
  margin: 0.75rem 0 0.25rem;
}

input,
select,
textarea {
  display: block;
  width: 100%;
  max-width: 100%;
  font: inherit;
  color: var(--fg);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 0.25rem;
  padding: 0.5rem;
}

fieldset {
  border: 0;
  padding: 0;
  margin: 0;
  min-width: 0;
}

button {
  font: inherit;
  min-height: 2.75rem;
  margin: 0.75rem 0.5rem 0 0;
  padding: 0.5rem 1rem;
  border: 1px solid var(--accent);
  border-radius: 0.25rem;
  background: var(--accent);
  color: var(--accent-fg);
  cursor: pointer;
}

button.secondary,
button.link {
  background: var(--bg);
  color: var(--accent);
}

button.link {
  margin: 0;
}

button:disabled,
fieldset:disabled button {
  cursor: not-allowed;
  opacity: 0.6;
}

button[aria-pressed="true"] {
  text-decoration: underline;
  text-underline-offset: 0.25em;
  font-weight: 600;
}

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

.notice {
  padding: 0.75rem 1rem;
  border-radius: 0.25rem;
  background: var(--surface);
}

.notice.error {
  background: var(--error-bg);
  color: var(--error-fg);
}

.notice.warning {
  background: var(--warn-bg);
  color: var(--warn-fg);
}

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

.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  list-style: none;
  padding: 0;
  margin: 0 0 1rem;
}

.list {
  list-style: none;
  padding: 0;
}

.list > li {
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border);
}

.card {
  margin-top: 1rem;
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: 0.25rem;
}

.card .title {
  font-weight: 600;
  margin: 0;
}

.card .body {
  white-space: pre-wrap;
}

.placeholder {
  color: var(--muted);
  font-style: italic;
}