/* Halcyon Mail — the small site behind the app's required links.
 *
 * One stylesheet, no framework, no fonts to download, no scripts at all. The Microsoft Store
 * requires a privacy policy at a live URL, and a page that has to load three third-party things
 * before it renders is a page that eventually 404s during certification.
 */

:root {
  --accent: #007aff;
  --ink: #1d1d1f;
  --ink-2: #4a4a4f;
  --ink-3: #86868b;
  --bg: #ffffff;
  --bg-2: #f5f5f7;
  --rule: #d2d2d7;
  --measure: 42rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --accent: #0a84ff;
    --ink: #f5f5f7;
    --ink-2: #c7c7cc;
    --ink-3: #8e8e93;
    --bg: #161618;
    --bg-2: #1f1f22;
    --rule: #38383c;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0 1.5rem 6rem;
  color: var(--ink);
  background: var(--bg);
  font-family:
    -apple-system, BlinkMacSystemFont, 'Segoe UI Variable Text', 'Segoe UI', system-ui, sans-serif;
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: var(--measure);
  margin: 0 auto;
}

header {
  display: flex;
  gap: 0.9rem;
  align-items: center;
  padding: 2.5rem 0 1.75rem;
  margin-bottom: 2.5rem;
  border-bottom: 1px solid var(--rule);
}

header img {
  width: 44px;
  height: 44px;
}

header .name {
  font-size: 1.35rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

header .tag {
  color: var(--ink-3);
  font-size: 0.95rem;
}

h1 {
  margin: 0 0 0.5rem;
  font-size: 2.1rem;
  font-weight: 650;
  line-height: 1.15;
  letter-spacing: -0.022em;
}

h2 {
  margin: 2.75rem 0 0.75rem;
  font-size: 1.3rem;
  font-weight: 600;
  letter-spacing: -0.012em;
}

h3 {
  margin: 2rem 0 0.5rem;
  font-size: 1.05rem;
  font-weight: 600;
}

.lede {
  margin-bottom: 2rem;
  color: var(--ink-2);
  font-size: 1.15rem;
}

.stamp {
  margin: 0 0 2.5rem;
  color: var(--ink-3);
  font-size: 0.9rem;
}

p,
li {
  color: var(--ink-2);
}

strong {
  color: var(--ink);
  font-weight: 600;
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

/* The one thing a reader should be able to find in five seconds. */
.headline {
  padding: 1.25rem 1.4rem;
  margin: 2rem 0;
  background: var(--bg-2);
  border-left: 3px solid var(--accent);
  border-radius: 0 8px 8px 0;
}

.headline p {
  margin: 0;
  color: var(--ink);
}

table {
  width: 100%;
  margin: 1.25rem 0 2rem;
  border-collapse: collapse;
  font-size: 0.95rem;
}

th,
td {
  padding: 0.6rem 0.8rem 0.6rem 0;
  color: var(--ink-2);
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--rule);
}

th {
  color: var(--ink);
  font-weight: 600;
}

code {
  padding: 0.1em 0.35em;
  font-family: ui-monospace, 'Cascadia Mono', Consolas, monospace;
  font-size: 0.88em;
  background: var(--bg-2);
  border-radius: 4px;
}

/* Wide content must scroll inside itself rather than pushing the page sideways on a phone. */
.scroll {
  overflow-x: auto;
}

footer {
  padding-top: 1.5rem;
  margin-top: 4rem;
  color: var(--ink-3);
  font-size: 0.9rem;
  border-top: 1px solid var(--rule);
}

footer a {
  margin-right: 1.25rem;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: 1rem;
  margin: 2rem 0;
}

.card {
  padding: 1.25rem;
  background: var(--bg-2);
  border-radius: 10px;
}

.card h3 {
  margin: 0 0 0.35rem;
}

.card p {
  margin: 0;
  font-size: 0.95rem;
}