/* Site-wide styles */

:root {
  /* System UI fonts only; no web font downloads */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  /* Only Safari resolves ui-monospace; other browsers pick from the fallbacks */
  --font-mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --color-bg: #ffffff;
  --color-text: #1f2328;
  --color-muted: #59636e;
  --color-link: #0969da;
  --color-border: #d1d9e0;
  --content-width: 40rem;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --color-bg: #0d1117;
    --color-text: #e6edf3;
    --color-muted: #9198a1;
    --color-link: #4493f8;
    --color-border: #30363d;
  }
}
:root[data-theme="dark"] {
  --color-bg: #0d1117;
  --color-text: #e6edf3;
  --color-muted: #9198a1;
  --color-link: #4493f8;
  --color-border: #30363d;
}

html {
  font-family: var(--font-sans);
  line-height: 1.6;
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
}

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

code {
  font-family: var(--font-mono);
}

.site-header,
.site-main,
.site-footer {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 1rem 16px;
}

.site-header {
  border-bottom: 1px solid var(--color-border);
}

.brand {
  font-weight: 700;
  text-decoration: none;
  color: var(--color-text);
}

.site-main {
  padding-top: 2rem;
  padding-bottom: 3rem;
}

.site-footer {
  border-top: 1px solid var(--color-border);
  color: var(--color-muted);
}