/* byteanvil.info - dev-tool docs. system sans + ui-monospace, indigo accent, docs tree layout. */
:root{
  --bg:#ffffff; --panel:#f6f7fb; --ink:#1b2130; --mut:#5a6377; --line:#e2e6ef;
  --acc:#3a53c8; --acc2:#8aa2ff; --code:#0f1526; --codeink:#d7e0ff;
  --ok:#157a4a; --warn:#9a5b00; --crumb:#8b93a7;
  --ch-dev:#6b7280; --ch-staging:#9a5b00; --ch-release:#157a4a;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);
  font-family:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;font-size:15.5px;line-height:1.6}
code,pre,.mono{font-family:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,monospace}
a{color:var(--acc);text-decoration:none}
a:hover{text-decoration:underline}
h1{font-size:1.9rem;line-height:1.15;letter-spacing:-.02em;margin:.1rem 0 .7rem}
h2{font-size:1.25rem;margin:2rem 0 .6rem;padding-top:.3rem;border-top:1px solid var(--line)}
h3{font-size:1.05rem;margin:1.3rem 0 .4rem}
p{margin:.6rem 0}
.lede{font-size:1.08rem;color:#2c3444}

/* top bar */
.site-top{display:flex;align-items:center;gap:1.2rem;padding:.55rem 1.1rem;
  background:#141b2e;color:#eef1fa;position:sticky;top:0;z-index:20;border-bottom:1px solid #0c1222}
.brand{display:flex;align-items:center;gap:.5rem;color:#fff;font-weight:650;font-size:1.05rem}
.brand:hover{text-decoration:none}
.brand-mark{color:var(--acc2);display:inline-flex}
.ver-badge{font:600 .7rem/1 ui-monospace,monospace;background:#2a3657;color:#aeb9e6;
  padding:.2rem .4rem;border-radius:5px;margin-left:.1rem}
.top-tabs{display:flex;gap:.2rem;margin-left:.5rem}
.top-tabs a{color:#b9c1dc;padding:.35rem .6rem;border-radius:6px;font-size:.92rem}
.top-tabs a:hover{background:#222c47;text-decoration:none}
.top-tabs a.on{color:#fff;background:#2b3858}
.signin-btn{margin-left:auto;background:var(--acc);color:#fff;padding:.4rem .9rem;border-radius:7px;font-weight:600;font-size:.9rem}
.signin-btn:hover{background:#2f45ad;text-decoration:none}

/* docs layout: tree + main + aside */
.doc-wrap{display:grid;grid-template-columns:238px minmax(0,1fr) 190px;gap:0;max-width:1240px;margin:0 auto}
.doc-tree{position:sticky;top:48px;align-self:start;height:calc(100vh - 48px);overflow:auto;
  padding:1.1rem .7rem 2rem 1rem;border-right:1px solid var(--line);font-size:.9rem;background:var(--bg)}
.doc-tree-h{font:600 .72rem/1 ui-monospace,monospace;color:var(--mut);text-transform:uppercase;letter-spacing:.08em;margin:.2rem 0 .8rem}
.doc-grp{margin-bottom:1rem}
.doc-grp-h{display:block;font-weight:650;color:#39415a;font-size:.82rem;text-transform:uppercase;letter-spacing:.05em;margin-bottom:.3rem}
.doc-tree ul{list-style:none;margin:0;padding:0}
.doc-tree li a{display:block;color:var(--mut);padding:.22rem .5rem;border-radius:5px;border-left:2px solid transparent}
.doc-tree li a:hover{color:var(--ink);background:var(--panel);text-decoration:none}
.doc-tree li a.on{color:var(--acc);background:#eef1ff;border-left-color:var(--acc);font-weight:600}
.doc-main{padding:1.3rem 2rem 3rem;min-width:0}
.doc-aside{position:sticky;top:48px;align-self:start;padding:1.5rem .8rem;font-size:.82rem;color:var(--mut)}
.aside-h{font-weight:650;text-transform:uppercase;letter-spacing:.06em;font-size:.68rem;color:#9aa2b6;margin:0 0 .5rem}
.mini-toc{list-style:none;margin:0;padding:0;border-left:1px solid var(--line)}
.mini-toc li a{display:block;color:var(--mut);padding:.18rem .7rem;margin-left:-1px;border-left:2px solid transparent}
.mini-toc li a:hover{color:var(--acc);border-left-color:var(--acc2);text-decoration:none}

.crumbs{font-size:.8rem;color:var(--crumb);margin-bottom:.9rem}
.crumbs a{color:var(--crumb)} .crumbs i{color:#c3c9d6;font-style:normal;margin:0 .1rem}

/* hero */
.hero{display:grid;grid-template-columns:1fr 1fr;gap:1.6rem;align-items:center;margin:.5rem 0 2rem}
.hero-text h1{font-size:2.15rem}
.hero-cta{display:flex;gap:.7rem;margin-top:1.1rem}
.btn-primary{background:var(--acc);color:#fff;padding:.6rem 1.2rem;border-radius:8px;font-weight:600}
.btn-primary:hover{background:#2f45ad;text-decoration:none}
.btn-ghost{border:1px solid var(--line);padding:.6rem 1.1rem;border-radius:8px;color:var(--ink)}
.btn-ghost:hover{border-color:var(--acc);text-decoration:none}
.hero-term{margin:0}
.term,.code,.syn{background:var(--code);color:var(--codeink);border-radius:9px;padding:.9rem 1rem;
  font-size:.82rem;line-height:1.55;overflow:auto;white-space:pre;margin:.4rem 0}
.term .p{color:#6fd3a0}
.code{font-size:.83rem}

.feat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--line);
  border:1px solid var(--line);border-radius:10px;overflow:hidden;margin:1.5rem 0}
.feat-grid article{background:var(--bg);padding:1rem 1.1rem}
.feat-grid h3{margin:.1rem 0 .3rem;font-size:1rem}
.feat-grid p{margin:0;color:var(--mut);font-size:.92rem}
.quick{margin:1.8rem 0}
.notecard{background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:1rem 1.2rem;margin:1.5rem 0}
.plain{margin:.4rem 0;padding-left:1.1rem}
.plain li{margin:.3rem 0}

/* tables */
.kv{border-collapse:collapse;width:100%;margin:.6rem 0;font-size:.92rem}
.kv th,.kv td{border:1px solid var(--line);padding:.4rem .6rem;text-align:left;vertical-align:top}
.kv th{background:var(--panel);font-weight:650}
.kv.sm{font-size:.85rem;margin:.5rem 0}
.prec{margin:.5rem 0 .5rem 1.2rem}
.prec li{margin:.2rem 0}

/* cli */
.cmd{border-left:3px solid var(--acc2);padding:.1rem 0 .4rem 1rem;margin:1.2rem 0}
.cmd h3{margin:.2rem 0}
.exits{font-size:.85rem;color:var(--mut)}
.seealso{margin-top:2rem;padding:.8rem 1rem;background:var(--panel);border-radius:9px;border:1px solid var(--line)}
.seealso h4{margin:0 0 .4rem;font-size:.8rem;text-transform:uppercase;letter-spacing:.05em;color:var(--mut)}
.seealso ul{margin:0;padding-left:1.1rem}

/* registry */
.reg-controls{display:flex;gap:.6rem;align-items:center;margin:1rem 0;flex-wrap:wrap}
.reg-controls input,.reg-controls select{padding:.45rem .6rem;border:1px solid var(--line);border-radius:7px;font:inherit}
.reg-controls input{flex:1;min-width:180px}
.reg-count{font-size:.82rem;color:var(--mut)}
.reg{border-collapse:collapse;width:100%;font-size:.86rem;margin:.4rem 0}
.reg th,.reg td{border-bottom:1px solid var(--line);padding:.4rem .5rem;text-align:left}
.reg th{color:var(--mut);font-weight:600;font-size:.78rem;text-transform:uppercase;letter-spacing:.04em}
.reg .num,.num{text-align:right;font-variant-numeric:tabular-nums}
.reg .mono{font-family:ui-monospace,monospace;color:var(--mut)}
.ch{font:600 .72rem/1 ui-monospace,monospace;padding:.15rem .4rem;border-radius:4px;color:#fff}
.ch-dev{background:var(--ch-dev)}.ch-staging{background:var(--ch-staging)}.ch-release{background:var(--ch-release)}
.empty{color:var(--mut);text-align:center;padding:1rem}
.smallnote{font-size:.82rem;color:var(--mut);margin-top:.8rem}

/* sim */
.sim-grid{display:flex;gap:1.2rem;flex-wrap:wrap;background:var(--panel);border:1px solid var(--line);border-radius:9px;padding:1rem;margin:1rem 0}
.sim-grid label{font-size:.88rem;display:flex;align-items:center;gap:.4rem}
.sim-grid input[type=number]{width:4rem;padding:.3rem .4rem;border:1px solid var(--line);border-radius:6px}
.sim-grid .chk{gap:.3rem}
.sim-out{margin:1rem 0}
.sim-fig{font-size:1.1rem;background:#eef1ff;border:1px solid #d6ddff;border-radius:9px;padding:1rem}
.sim-fig b{color:var(--acc)}

/* search */
#sq{width:100%;padding:.6rem .8rem;border:1px solid var(--line);border-radius:8px;font:inherit;margin:.6rem 0}
.sres{list-style:none;padding:0;margin:.6rem 0}
.sres li{padding:.5rem .2rem;border-bottom:1px solid var(--line)}
.sres .kw{display:block;font-size:.78rem;color:var(--mut)}

/* releases */
.rel{border-bottom:1px solid var(--line);padding:.6rem 0}
.rel h3{display:flex;align-items:baseline;gap:.6rem}
.rel-date{font:500 .8rem/1 ui-monospace,monospace;color:var(--mut)}
.fmt-flag{font:600 .68rem/1.4 ui-monospace,monospace;background:#fff3df;color:var(--warn);padding:.1rem .4rem;border-radius:4px;border:1px solid #f0d9ad}
.rel-notes{margin:.4rem 0 .4rem 1.1rem}
.rel-perma a,.rel-nav a{font-size:.8rem}
.rel-meta{color:var(--mut);font-size:.9rem}
.rel-nav{display:flex;gap:1rem;margin-top:1.4rem}
.warn{background:#fff6e9;border:1px solid #f0d9ad;color:#7a4a00;border-radius:8px;padding:.6rem .8rem;margin:.8rem 0}

/* auth */
.auth{max-width:380px;display:flex;flex-direction:column;gap:.8rem;margin:1.2rem 0;
  background:var(--panel);border:1px solid var(--line);border-radius:11px;padding:1.3rem}
.auth label{display:flex;flex-direction:column;gap:.3rem;font-size:.85rem;font-weight:600;color:#39415a}
.auth input[type=email],.auth input[type=password]{padding:.55rem .7rem;border:1px solid var(--line);border-radius:7px;font:inherit}
.auth .chk{flex-direction:row;align-items:center;gap:.4rem;font-weight:400}
.auth button{background:var(--acc);color:#fff;border:0;padding:.6rem;border-radius:8px;font:600 1rem/1 inherit;cursor:pointer}
.auth button:hover{background:#2f45ad}
.auth-msg{font-size:.85rem;margin:.2rem 0 0;min-height:1.1rem}
.auth-msg.err{color:#b02020}
.auth-msg.ok{color:#2c3444;background:#eef1ff;border:1px solid #d6ddff;padding:.6rem .7rem;border-radius:7px}

/* footer */
.site-foot{border-top:1px solid var(--line);background:var(--panel);margin-top:2rem;padding:1.8rem 1.1rem 2rem}
.foot-cols{display:grid;grid-template-columns:repeat(4,1fr);gap:1.2rem;max-width:1100px;margin:0 auto 1.3rem}
.foot-cols h4{font-size:.72rem;text-transform:uppercase;letter-spacing:.06em;color:var(--mut);margin:0 0 .5rem}
.foot-cols ul{list-style:none;margin:0;padding:0}
.foot-cols li{margin:.25rem 0}
.foot-cols a{color:#45506b;font-size:.86rem}
.foot-legal{max-width:1100px;margin:0 auto;border-top:1px solid var(--line);padding-top:1rem;color:var(--mut);font-size:.8rem}
.foot-legal .rev{font-family:ui-monospace,monospace;font-size:.75rem}
.foot-legal .cr{color:#9aa2b6}

/* 404 */
.doc-404{max-width:620px}
.big-exit{font:700 .9rem/1 ui-monospace,monospace;color:var(--warn);letter-spacing:.1em;text-transform:uppercase}

@media (max-width:1040px){
  .doc-wrap{grid-template-columns:210px 1fr}
  .doc-aside{display:none}
}
@media (max-width:820px){
  .doc-wrap{grid-template-columns:1fr}
  .doc-tree{position:static;height:auto;border-right:0;border-bottom:1px solid var(--line);
    display:flex;flex-wrap:wrap;gap:.4rem 1rem}
  .doc-grp{margin:0}
  .hero{grid-template-columns:1fr}
  .feat-grid{grid-template-columns:1fr}
  .foot-cols{grid-template-columns:1fr 1fr}
  .top-tabs{display:none}
}
@media (max-width:420px){ .doc-main{padding:1rem} .foot-cols{grid-template-columns:1fr} }

@media (prefers-color-scheme:dark){
  :root{--bg:#0f1420;--panel:#161d2e;--ink:#dde3f1;--mut:#8f99b2;--line:#263149;--acc:#8aa2ff;--acc2:#6f84d8;--crumb:#7e879e}
  body{background:var(--bg);color:var(--ink)}
  .doc-tree li a.on{background:#1b2746}
  .sim-fig{background:#18233f;border-color:#2a3a5e}
  .auth-msg.ok{background:#18233f;border-color:#2a3a5e}
  .feat-grid article{background:var(--bg)}
  .fmt-flag,.warn{background:#2a2113;border-color:#4a3a1a;color:#e0b878}
}