/* LocalBrain shared design system - landing, /notes, /docs.
   Native CSS, self-hosted fonts, zero external requests. */

@font-face{font-family:'Grotesk';src:url('/assets/fonts/space-grotesk-400.woff2') format('woff2');font-weight:400;font-display:swap}
@font-face{font-family:'Grotesk';src:url('/assets/fonts/space-grotesk-500.woff2') format('woff2');font-weight:500;font-display:swap}
@font-face{font-family:'Grotesk';src:url('/assets/fonts/space-grotesk-700.woff2') format('woff2');font-weight:700;font-display:swap}
@font-face{font-family:'Mono';src:url('/assets/fonts/jetbrains-mono-400.woff2') format('woff2');font-weight:400;font-display:swap}
@font-face{font-family:'Mono';src:url('/assets/fonts/jetbrains-mono-500.woff2') format('woff2');font-weight:500;font-display:swap}

:root{
  --bg:#08090b; --bg-2:#0b0d10; --surface:#101318; --surface-2:#161a20;
  --line:rgba(255,255,255,.07); --line-2:rgba(255,255,255,.12);
  --text:#eceef1; --muted:#99a1ab; --faint:#646c76; --ink:#d7dbe0;
  --accent:#10b981; --accent-2:#4ade9f; --glow:16,185,129; --on-accent:#04170f;
  --rc:16px; --rb:12px; --maxw:1140px;
  --font:'Grotesk',-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --mono:'Mono',ui-monospace,SFMono-Regular,Menlo,monospace;
  --ease:cubic-bezier(.2,.8,.2,1);
  color-scheme:dark;
}
/* Light theme: forced via [data-theme=light], or system default when no override. */
:root[data-theme="light"]{
  --bg:#ffffff; --bg-2:#f5f6f7; --surface:#ffffff; --surface-2:#f4f5f7;
  --line:rgba(0,0,0,.10); --line-2:rgba(0,0,0,.15);
  --text:#0d1117; --muted:#57606a; --faint:#8c959f; --ink:#2a2f36;
  --accent:#047857; --accent-2:#065f46; --on-accent:#ffffff;
  color-scheme:light;
}
@media (prefers-color-scheme: light){
  :root:not([data-theme]){
    --bg:#ffffff; --bg-2:#f5f6f7; --surface:#ffffff; --surface-2:#f4f5f7;
    --line:rgba(0,0,0,.10); --line-2:rgba(0,0,0,.15);
    --text:#0d1117; --muted:#57606a; --faint:#8c959f; --ink:#2a2f36;
    --accent:#047857; --accent-2:#065f46; --on-accent:#ffffff;
    color-scheme:light;
  }
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font);font-size:16px;line-height:1.6;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:hidden;position:relative}
body::before{content:"";position:fixed;inset:0;z-index:0;pointer-events:none;opacity:.05;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")}
main,header,footer{position:relative;z-index:1}
a{color:inherit;text-decoration:none}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.12;letter-spacing:-.03em}
h1 em,h2 em,h3 em{font-style:italic;color:var(--accent-2);padding-bottom:.04em}
p{margin:0}
::selection{background:rgba(var(--glow),.28);color:#fff}
:focus-visible{outline:2px solid var(--accent-2);outline-offset:3px;border-radius:6px}
.aura{position:absolute;border-radius:50%;filter:blur(120px);pointer-events:none;z-index:0}
:root[data-theme="light"] .aura{opacity:.4}
@media(prefers-color-scheme:light){ :root:not([data-theme]) .aura{opacity:.4} }

/* buttons */
.btn{position:relative;display:inline-flex;align-items:center;gap:8px;font-family:var(--font);font-size:15px;
  font-weight:500;padding:12px 22px;border-radius:var(--rb);border:1px solid transparent;cursor:pointer;
  overflow:hidden;transition:transform .15s var(--ease),background .2s,border-color .2s,box-shadow .3s}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--accent);color:var(--on-accent);font-weight:600}
.btn-primary:hover{background:var(--accent-2);box-shadow:0 10px 34px -8px rgba(var(--glow),.55)}
.btn-primary::after{content:"";position:absolute;top:0;left:-120%;width:60%;height:100%;
  background:linear-gradient(100deg,transparent,rgba(255,255,255,.35),transparent);transition:left .5s var(--ease)}
.btn-primary:hover::after{left:130%}
.btn-ghost{background:rgba(255,255,255,.02);color:var(--text);border-color:var(--line-2)}
.btn-ghost:hover{border-color:var(--muted);background:rgba(255,255,255,.05)}

/* nav */
header.nav{position:sticky;top:0;z-index:50;transition:background .3s,border-color .3s}
header.nav.scrolled{background:color-mix(in srgb,var(--bg) 72%,transparent);backdrop-filter:blur(14px) saturate(1.4);
  border-bottom:1px solid var(--line)}
.nav-in{display:flex;align-items:center;justify-content:space-between;height:66px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;letter-spacing:-.02em;font-size:17px}
.brand img{width:27px;height:27px;border-radius:8px}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-links a:not(.btn){color:var(--muted);font-size:14.5px;transition:color .18s}
.nav-links a:not(.btn):hover,.nav-links a.active{color:var(--text)}
.theme-toggle{display:inline-flex;align-items:center;justify-content:center;color:var(--muted);
  background:transparent;border:1px solid var(--line-2);border-radius:10px;width:34px;height:34px;
  cursor:pointer;transition:color .18s,border-color .18s,background .18s}
.theme-toggle:hover{color:var(--text);border-color:var(--muted);background:rgba(127,127,127,.08)}
@media(max-width:720px){ .nav-links a.nl{display:none} }

/* footer */
footer.site{border-top:1px solid var(--line);padding:44px 0;color:var(--faint);font-size:14px;margin-top:80px}
.foot-in{display:flex;justify-content:space-between;align-items:flex-start;gap:24px;flex-wrap:wrap}
.foot-brand{display:flex;align-items:center;gap:10px;color:var(--muted);font-weight:600}
.foot-brand img{width:22px;height:22px;border-radius:6px}
.foot-cols{display:flex;gap:56px;flex-wrap:wrap}
.foot-col{display:grid;gap:9px}
.foot-col b{color:var(--muted);font-weight:600;font-size:12px;text-transform:uppercase;letter-spacing:.08em}
.foot-col a{color:var(--faint)} .foot-col a:hover{color:var(--text)}

/* page header band (blog/docs index) */
.pagehead{position:relative;overflow:hidden;padding:72px 0 40px}
.pagehead .aura{width:640px;height:520px;background:radial-gradient(circle,rgba(var(--glow),.4),transparent 62%);
  top:-240px;right:-140px;opacity:.5}
.eyebrow{font-family:var(--mono);font-size:12px;color:var(--accent-2);letter-spacing:.02em;margin-bottom:16px}
.pagehead h1{font-size:clamp(32px,4.6vw,48px);letter-spacing:-.04em}
.pagehead .lead{color:var(--muted);font-size:18px;margin-top:16px;max-width:56ch}

/* blog index list */
.postlist{display:grid;gap:2px;margin:20px 0 40px}
.postrow{display:grid;grid-template-columns:1fr auto;gap:20px;align-items:baseline;padding:26px 0;
  border-top:1px solid var(--line);transition:background .2s}
.postrow:hover{background:rgba(255,255,255,.015)}
.postrow .pt{font-size:21px;font-weight:600;letter-spacing:-.02em;margin-bottom:7px}
.postrow:hover .pt{color:var(--accent-2)}
.postrow .pd{color:var(--muted);font-size:15px;max-width:72ch;line-height:1.5}
.postrow .pmeta{font-family:var(--mono);font-size:12.5px;color:var(--faint);white-space:nowrap;text-align:right}
.postrow.soon{opacity:.5;pointer-events:none}
.postrow.soon .pmeta{color:var(--accent-2)}
@media(max-width:640px){ .postrow{grid-template-columns:1fr} .postrow .pmeta{text-align:left} }

/* prose (article + doc body) */
.prose{max-width:720px;font-size:17px;line-height:1.7;color:var(--ink)}
.prose>*+*{margin-top:22px}
.prose h2{font-size:26px;margin-top:52px;color:var(--text);letter-spacing:-.03em}
.prose h3{font-size:20px;margin-top:36px;color:var(--text)}
.prose h2+p,.prose h3+p{margin-top:14px}
.prose a{color:var(--accent-2);text-decoration:underline;text-underline-offset:3px;text-decoration-color:rgba(var(--glow),.4)}
.prose a:hover{text-decoration-color:var(--accent-2)}
.prose strong{color:var(--text);font-weight:600}
.prose ul,.prose ol{padding-left:22px;display:grid;gap:10px}
.prose li{padding-left:4px}
.prose li::marker{color:var(--accent)}
.prose blockquote{margin:0;padding:4px 0 4px 22px;border-left:2px solid var(--accent);color:var(--muted);font-style:italic}
.prose code{font-family:var(--mono);font-size:.86em;background:var(--surface-2);border:1px solid var(--line);
  border-radius:6px;padding:2px 6px;color:var(--accent-2)}
.prose pre{background:var(--surface);border:1px solid var(--line-2);border-radius:12px;padding:18px 20px;
  overflow-x:auto;font-family:var(--mono);font-size:13.5px;line-height:1.7;color:var(--text)}
.prose pre code{background:none;border:none;padding:0;color:inherit;font-size:inherit}
.prose hr{border:none;border-top:1px solid var(--line);margin:44px 0}
.prose .lede{font-size:20px;line-height:1.6;color:var(--muted)}
.callout{background:radial-gradient(120% 140% at 0 0,rgba(var(--glow),.1),transparent 60%),var(--surface);
  border:1px solid rgba(var(--glow),.24);border-radius:14px;padding:20px 22px;font-size:15.5px}
.callout b{color:var(--accent-2)}

/* article scaffold */
.article{padding:56px 0 20px}
.article-head{max-width:760px;margin-bottom:40px}
.article-head .kb{font-family:var(--mono);font-size:12.5px;color:var(--faint);margin-bottom:18px}
.article-head .kb a{color:var(--accent-2)}
.article-head h1{font-size:clamp(30px,4.4vw,46px);letter-spacing:-.04em;line-height:1.1}
.article-head .meta{margin-top:20px;color:var(--faint);font-family:var(--mono);font-size:13px;display:flex;gap:14px;flex-wrap:wrap}
.article-foot{max-width:720px;margin-top:56px;padding-top:32px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;align-items:center}

/* docs layout */
.docwrap{display:grid;grid-template-columns:240px 1fr;gap:56px;align-items:start;padding:44px 0 20px}
.docnav{position:sticky;top:90px;display:grid;gap:6px;font-size:14.5px}
.docnav .grp{font-family:var(--mono);font-size:11px;text-transform:uppercase;letter-spacing:.1em;
  color:var(--faint);margin:18px 0 6px}
.docnav .grp:first-child{margin-top:0}
.docnav a{color:var(--muted);padding:5px 10px;border-radius:8px;transition:.16s}
.docnav a:hover{color:var(--text);background:rgba(255,255,255,.03)}
.docnav a.active{color:var(--accent-2);background:rgba(var(--glow),.08)}
.docnav a.soon{opacity:.42;pointer-events:none}
@media(max-width:840px){ .docwrap{grid-template-columns:1fr;gap:24px} .docnav{position:static;
  grid-auto-flow:column;grid-template-columns:none;overflow-x:auto;gap:4px;padding-bottom:8px} .docnav .grp{display:none} }

/* reveal */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){ html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none} .btn,.btn-primary::after{transition:none} }