/* ESAC program site. Hand-written and dependency-free, like the rest of the project. */

:root {
  --bg: #ffffff;
  --fg: #1f2328;
  --muted: #59636e;
  --line: #d1d9e0;
  --accent: #0b6b3a;
  --code-bg: #f6f8fa;
  --max: 52rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d1117;
    --fg: #e6edf3;
    --muted: #9198a1;
    --line: #30363d;
    --accent: #57d38c;
    --code-bg: #161b22;
  }
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 1.25rem; }

.skip {
  position: absolute;
  left: -9999px;
}
.skip:focus {
  left: 0;
  top: 0;
  background: var(--accent);
  color: var(--bg);
  padding: 0.5rem 0.75rem;
  z-index: 10;
}

.masthead {
  border-bottom: 1px solid var(--line);
  padding: 2rem 0 1.25rem;
  margin-bottom: 2rem;
}

.wordmark {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-decoration: none;
  color: var(--fg);
}

.tagline {
  margin: 0.25rem 0 1rem;
  color: var(--muted);
}

nav[aria-label="Site"] {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1rem;
  font-size: 0.95rem;
}

nav[aria-label="Site"] a {
  color: var(--accent);
  text-decoration: none;
}
nav[aria-label="Site"] a:hover { text-decoration: underline; }

main { padding-bottom: 3rem; }

h1, h2, h3 { line-height: 1.25; }

h1 { font-size: 1.8rem; margin-top: 0; }
h2 { font-size: 1.3rem; margin-top: 2.25rem; padding-top: 0.5rem; border-top: 1px solid var(--line); }
h3 { font-size: 1.05rem; margin-top: 1.75rem; }

a { color: var(--accent); }

code {
  background: var(--code-bg);
  border-radius: 4px;
  padding: 0.1em 0.3em;
  font-size: 0.9em;
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}

pre {
  background: var(--code-bg);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0.9rem 1rem;
  overflow-x: auto;
}

pre code { background: none; padding: 0; font-size: 0.85rem; }

blockquote {
  margin: 1.25rem 0;
  padding: 0.25rem 0 0.25rem 1rem;
  border-left: 3px solid var(--line);
  color: var(--muted);
}

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

th, td {
  border: 1px solid var(--line);
  padding: 0.45rem 0.6rem;
  text-align: left;
  vertical-align: top;
}

th { background: var(--code-bg); }

hr {
  border: 0;
  border-top: 1px solid var(--line);
  margin: 2rem 0;
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 1.5rem 0 3rem;
  color: var(--muted);
  font-size: 0.9rem;
}