/* Masuda — oauth.aitorsm.com
   System fonts only. No external assets, no gradients, no tracking. */

:root {
  --ink: #16181c;
  --ink-muted: #565b64;
  --rule: #d9dbe0;
  --rule-strong: #b4b8c0;
  --paper: #fbfbf9;
  --paper-inset: #f2f2ef;
  --link: #14457a;

  --serif: ui-serif, Georgia, "Iowan Old Style", "Times New Roman", Times, serif;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;

  --measure: 34rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #e6e7ea;
    --ink-muted: #9ba0aa;
    --rule: #2c2f36;
    --rule-strong: #434750;
    --paper: #121317;
    --paper-inset: #191b20;
    --link: #8fbce8;
  }
}

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

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 1.0625rem;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  padding: 0.5rem 0.75rem;
  background: var(--paper);
  border: 1px solid var(--rule-strong);
  font-family: var(--sans);
  font-size: 0.875rem;
}

.skip-link:focus {
  left: 0.5rem;
  top: 0.5rem;
  z-index: 10;
}

.page {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 2.5rem 1.25rem 4rem;
}

@media (min-width: 40rem) {
  .page {
    padding: 4.5rem 2rem 6rem;
  }
}

/* ---------- masthead ---------- */

.masthead {
  border-bottom: 1px solid var(--rule-strong);
  padding-bottom: 1.5rem;
  margin-bottom: 2.5rem;
}

.masthead__eyebrow,
.eyebrow {
  font-family: var(--sans);
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin: 0 0 0.75rem;
}

h1 {
  font-size: 1.875rem;
  line-height: 1.2;
  letter-spacing: -0.015em;
  font-weight: 600;
  margin: 0 0 0.5rem;
}

@media (min-width: 40rem) {
  h1 {
    font-size: 2.25rem;
  }
}

.lede {
  color: var(--ink-muted);
  margin: 0;
  font-size: 1.0625rem;
}

h2 {
  font-family: var(--sans);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin: 2.75rem 0 0.75rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--rule);
}

h3 {
  font-size: 1.0625rem;
  font-weight: 600;
  margin: 1.75rem 0 0.35rem;
}

p {
  margin: 0 0 1rem;
}

ul {
  margin: 0 0 1rem;
  padding-left: 1.15rem;
}

li {
  margin-bottom: 0.4rem;
}

li::marker {
  color: var(--rule-strong);
}

a {
  color: var(--link);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.15em;
}

a:hover {
  text-decoration-thickness: 2px;
}

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

strong {
  font-weight: 600;
}

code,
.mono {
  font-family: var(--mono);
  font-size: 0.875em;
}

abbr[title] {
  text-decoration: none;
}

/* ---------- blocks ---------- */

.callout {
  background: var(--paper-inset);
  border-left: 2px solid var(--rule-strong);
  padding: 1rem 1.1rem;
  margin: 1.5rem 0;
}

.callout > :last-child {
  margin-bottom: 0;
}

.scopes {
  list-style: none;
  padding: 0;
  margin: 0 0 1rem;
}

.scopes li {
  border-top: 1px solid var(--rule);
  padding: 0.8rem 0;
  margin: 0;
}

.scopes li:last-child {
  border-bottom: 1px solid var(--rule);
}

.scopes__name {
  display: block;
  font-family: var(--sans);
  font-size: 0.9375rem;
  font-weight: 600;
}

.scopes__detail {
  display: block;
  color: var(--ink-muted);
  font-size: 0.9375rem;
}

dl {
  margin: 0 0 1rem;
}

dt {
  font-family: var(--sans);
  font-size: 0.8125rem;
  font-weight: 600;
  margin-top: 1rem;
}

dd {
  margin: 0.15rem 0 0;
}

.toc {
  font-family: var(--sans);
  font-size: 0.9375rem;
  list-style: none;
  padding: 0;
  margin: 0 0 1rem;
}

.toc li {
  margin-bottom: 0.3rem;
}

.next-page {
  display: block;
  margin: 2.5rem 0 0;
  padding: 1rem 0;
  border-top: 1px solid var(--rule-strong);
  border-bottom: 1px solid var(--rule-strong);
  font-family: var(--sans);
  font-size: 0.9375rem;
  font-weight: 600;
}

/* ---------- footer ---------- */

.footer {
  margin-top: 3.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--rule);
  font-family: var(--sans);
  font-size: 0.8125rem;
  color: var(--ink-muted);
}

.footer p {
  margin: 0 0 0.35rem;
}

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