:root {
  --body-bg: #ffffff;
  --text: #222;
  --muted: #555;
  --link: #0366d6;
}

html, body {
  margin: 0;
  padding: 0;
  background: var(--body-bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  line-height: 1.5;
}

a {
  color: var(--link);
  text-decoration: none;
}

a:hover,
a:focus {
  text-decoration: underline;
}

h1, h2, h3 {
  color: var(--text);
  margin-top: 1.2rem;
  margin-bottom: 0.6rem;
}

/* code / pre styling */
pre {
  position: relative;
  padding: 14px;
  overflow: auto;
  border-radius: 6px;
  background: #f7f7f9;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, "Roboto Mono", "Courier New", monospace;
  font-size: 13px;
  line-height: 1.4;
  margin: 1rem 0;
}

/* copy button styles for code blocks */
.copy-btn {
  background: #0366d6;
  color: #fff;
  border: none;
  border-radius: 6px;
  box-shadow: 0 1px 0 rgba(0,0,0,0.04);
  padding: 6px 8px;
  font-size: 13px;
  cursor: pointer;
}

/* position the button inside pre (script sets absolute) */
pre .copy-btn {
  position: absolute;
  top: 8px;
  right: 8px;
}

/* small interaction styles */
.copy-btn:hover { filter: brightness(0.95); }
.copy-btn:active { transform: translateY(1px); }
.copy-btn:focus { outline: 2px solid rgba(3,102,214,0.25); outline-offset: 2px; }

/* small responsive tweak */
@media (max-width: 480px) {
  pre { padding: 10px; font-size: 12px; }
  nav.site-nav { font-size: 15px; }
}