/* Sill's website. System fonts, light and dark, no scripts and nothing loaded from elsewhere. */

:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --card: #f5f5f7;
  --text: #1d1d1f;
  --muted: #6e6e73;
  --line: #d2d2d7;
  --link: #0066cc;
  --button: #0071e3;
  --button-hover: #0077ed;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #000000;
    --card: #1c1c1e;
    --text: #f5f5f7;
    --muted: #a1a1a6;
    --line: #38383a;
    --link: #2997ff;
  }
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.55 -apple-system, BlinkMacSystemFont, system-ui, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  overflow-wrap: break-word;
}

.site-header, main, .site-footer {
  max-width: 44rem;
  margin: 0 auto;
  padding: 0 16px;
}

a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }
a:focus-visible { outline: 2px solid var(--link); outline-offset: 2px; border-radius: 4px; }

/* Header and footer */

.site-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 24px;
  padding-top: 16px;
  padding-bottom: 16px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 600;
  font-size: 1.15rem;
}
.brand:hover { text-decoration: none; }
.brand img { width: 30px; height: 30px; border-radius: 22.5%; }

.site-header nav, .site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 20px;
}
.site-header nav a { color: var(--text); }
.site-header nav a[aria-current="page"] { color: var(--muted); }

.site-footer {
  margin-top: 64px;
  padding-bottom: 40px;
  font-size: 0.875rem;
}
/* The rule sits on the nav, so it lines up with the text above instead of the page's gutters. */
.site-footer nav {
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

/* Text */

h1 {
  font-size: 2.25rem;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 32px 0 12px;
}
h2 {
  font-size: 1.4rem;
  line-height: 1.25;
  letter-spacing: -0.01em;
  margin: 44px 0 10px;
}
h3 {
  font-size: 1.05rem;
  margin: 24px 0 6px;
}

p, ul, ol { margin: 0 0 14px; }
ul, ol { padding-left: 1.4em; }
li { margin: 6px 0; }

.lede { font-size: 1.2rem; line-height: 1.5; }
.muted { color: var(--muted); }
.small { font-size: 0.875rem; }

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.88em;
  background: var(--card);
  border-radius: 5px;
  padding: 1px 5px;
}
/* A SHA-256 is 64 characters with no spaces: let it wrap on a phone instead of widening the page. */
.hash code { overflow-wrap: anywhere; word-break: break-all; }

/* Home */

.hero { text-align: center; padding-top: 24px; }
.hero img { width: 112px; height: 112px; border-radius: 22.5%; }
.hero h1 { font-size: 3rem; margin-top: 16px; }
.hero .lede { font-size: 1.35rem; margin-bottom: 0; }
.intro { font-size: 1.1rem; margin-top: 40px; }

/* Buttons and the release box */

.button {
  display: inline-block;
  background: var(--button);
  color: #ffffff;
  font-weight: 600;
  padding: 12px 24px;
  border-radius: 980px;
}
.button:hover { background: var(--button-hover); text-decoration: none; }
.button:focus-visible { outline-offset: 3px; border-radius: 980px; }

.cta { margin: 28px 0 8px; }

.card {
  background: var(--card);
  border-radius: 16px;
  padding: 20px 22px 8px;
  margin: 24px 0;
}
.card h2 { margin-top: 0; }

/* Numbered steps */

ol.steps {
  list-style: none;
  counter-reset: step;
  padding-left: 0;
}
ol.steps > li {
  counter-increment: step;
  position: relative;
  padding-left: 44px;
  margin: 14px 0;
  min-height: 30px;
}
ol.steps > li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: -1px;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--card);
  color: var(--text);
  font-weight: 600;
  font-size: 0.95rem;
  line-height: 30px;
  text-align: center;
}