/* Typography and layout */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;600;700&display=swap');

:root{
  --bg: #f4f4ff;
  --text: #111827;
  --muted: #475569;
  --accent: #0b6b6b;
  --nav-bg: rgba(255,255,255,0.8);
}

html,body{
  height:100%;
}

body {
  background-color: var(--bg);
  color: var(--text);
  font-family: Inter, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height:1.6;
  max-width:880px;
  margin:28px auto;
  padding:0 20px;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}

/* Headings */
h1,h2,h3{color:var(--accent);line-height:1.12;margin-top:1.25em}

/* Links */
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
a:focus{outline:3px solid #cfeef0;outline-offset:3px}

/* Code */
code{background:#eef6f6;padding:0.08em 0.28em;border-radius:4px;font-family:ui-monospace, SFMono-Regular, Menlo, Monaco, "Roboto Mono", monospace}

/* Images */
img{max-width:100%;height:auto;display:block}

/* Header / nav */
.site-nav{display:flex;gap:12px;align-items:center;padding:10px 0;border-bottom:1px solid rgba(11,107,107,0.06);position:sticky;top:0;background:var(--nav-bg);backdrop-filter:blur(4px);}
.site-nav a{padding:6px 10px;border-radius:6px;color:var(--accent);font-weight:600}
.site-nav a:hover{background:rgba(11,107,107,0.06)}

/* Footer */
.site-footer{margin-top:36px;padding-top:18px;border-top:1px solid rgba(11,107,107,0.06);color:var(--muted);font-size:0.95rem}
.site-footer a{color:var(--muted)}

/* Accessibility: Skip link */
.skip-link{position:absolute;left:-999px;top:auto;width:1px;height:1px;overflow:hidden}
.skip-link:focus{position:static;width:auto;height:auto;padding:8px;background:#fff;border:1px solid #ccc}

/* Small screens */
@media (max-width:520px){body{padding:0 14px}.site-nav{gap:8px}}