/* Shared by the home page and every book: palette, fonts, top bar, footer. Light only, to match the design; dark palette is kept for :root[data-theme="dark"] */
:root{
  --ink:#12201a; --muted:#4a5c52; --bg:#f3f6f3; --paper:#ffffff; --line:#dfe6e0;
  --accent:#1f6f50; --accent-soft:#e3f1ea;
  --display:"Noto Sans Lao Looped","Noto Sans Lao",system-ui,sans-serif;
  --body:"Noto Sans Lao",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,Menlo,monospace;
}
:root[data-theme="dark"]{
  color-scheme:dark;
  --ink:#e6efe9; --muted:#9db0a5; --bg:#0e1612; --paper:#16221b; --line:#26352c;
  --accent:#5fd3a0; --accent-soft:#17302a;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:84px}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--body);font-size:16px;line-height:1.75}
a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid var(--accent);outline-offset:3px}

.site-nav{position:sticky;top:0;z-index:20;background:var(--bg);border-bottom:1px solid var(--line)}
@supports (backdrop-filter:blur(1px)){
  .site-nav{background:color-mix(in srgb,var(--bg) 84%,transparent);backdrop-filter:blur(14px)}
}
.nav-in{max-width:1240px;margin:0 auto;padding:12px 24px;display:flex;flex-wrap:wrap;gap:8px 28px;align-items:center}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:inherit;font-family:var(--display);font-weight:700;font-size:18px}
.nav-links{display:flex;gap:24px;font-size:15px;flex:1 1 auto}
.nav-links a{color:var(--muted);text-decoration:none}
.nav-links a:hover,.nav-links a[aria-current]{color:var(--ink)}
.nav-search{display:flex;align-items:center;gap:10px;color:var(--muted);text-decoration:none;font-size:14.5px;background:var(--paper);border:1px solid var(--line);border-radius:999px;padding:4px 8px 4px 16px}
.nav-search:hover{border-color:var(--accent)}
.kbd{font-family:var(--mono);font-size:12px;border:1px solid var(--line);border-radius:5px;padding:0 7px;line-height:20px}

.site-footer{max-width:1240px;margin:0 auto;padding:20px 24px 40px;display:flex;flex-wrap:wrap;gap:8px 24px;justify-content:space-between;font-size:13.5px;color:var(--muted)}
.site-footer .mono{font-family:var(--mono)}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}