/* Shared shell for the non-portal pages (landing, docs). Tokens first, then the
   pieces both pages use: nav, search palette, abbr tooltips, focus, motion. */

:root{
  --bg:#0b0e14; --panel:#11151e; --panel-2:#161b26; --panel-3:#1c2230; --line:#242c3b; --line-2:#303a4d;
  --ink:#e7eaf2; --ink-2:#aeb6c8; --dim:#7b8497;
  --accent:#d8a64a; --accent-ink:#0b0e14; --accent-2:#4fb6ae; --err:#e8798c; --ok:#6fcf97;
  --accent-soft:rgba(216,166,74,.12); --accent-2-soft:rgba(79,182,174,.12);
  --mono:ui-monospace,SFMono-Regular,"JetBrains Mono",Menlo,monospace;
  --sans:system-ui,-apple-system,"Segoe UI",sans-serif;
  --shadow:0 12px 40px rgba(0,0,0,.5);
  --radius:8px; --nav-h:52px;
  color-scheme:dark;
}
:root[data-theme="light"]{
  --bg:#f7f5ef; --panel:#ffffff; --panel-2:#f0ede4; --panel-3:#e8e4d8; --line:#dcd7ca; --line-2:#c9c3b3;
  --ink:#1b1f27; --ink-2:#464d5c; --dim:#5d6473;
  --accent:#835708; --accent-ink:#ffffff; --accent-2:#0f6b64; --err:#a8323f; --ok:#22683f;
  --accent-soft:rgba(131,87,8,.10); --accent-2-soft:rgba(15,107,100,.10);
  --shadow:0 12px 40px rgba(40,30,10,.18);
  color-scheme:light;
}
*{box-sizing:border-box;margin:0}
html{scroll-behavior:smooth}
/* Text size: three steps, chosen with the "A" button and kept in this browser. A
   scale on font sizes only (not CSS zoom: zoom breaks scroll geometry in Chromium). */
:root{--ts:1}
:root[data-size="large"]{--ts:1.15}
:root[data-size="larger"]{--ts:1.3}
/* clip, not hidden: hidden would make body a scroll container and un-stick the nav.
   Off-screen tooltips otherwise widen the page on a phone. */
body{background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:calc(15px * var(--ts, 1));line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:clip}
a{color:var(--accent-2)} a:hover{color:var(--accent)}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:3px}
button{font:inherit;color:inherit}
.skip{position:absolute;left:-9999px;top:8px;background:var(--accent);color:var(--accent-ink);padding:8px 12px;border-radius:6px;z-index:10;font-weight:600}
.skip:focus{left:8px}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation-duration:.001s!important;transition-duration:.001s!important}}

/* --- top nav ------------------------------------------------------------- */
.site-nav{position:sticky;top:0;z-index:5;display:flex;align-items:center;gap:14px;height:var(--nav-h);padding:0 18px;background:color-mix(in srgb,var(--bg) 88%,transparent);border-bottom:1px solid var(--line);backdrop-filter:blur(8px)}
.site-nav .brand{font-weight:650;color:var(--ink);text-decoration:none;white-space:nowrap}
.site-nav .brand span{color:var(--accent)}
.site-nav a{color:var(--ink-2);text-decoration:none;font-size:calc(13.5px * var(--ts, 1));white-space:nowrap}
.site-nav a:hover{color:var(--ink)}
.site-nav .right{margin-left:auto;display:flex;gap:14px;align-items:center}
.site-nav select{background:var(--panel-2);color:var(--ink);border:1px solid var(--line);border-radius:6px;padding:4px 8px;font:inherit;font-size:calc(13px * var(--ts, 1))}
.icon-btn{background:transparent;border:1px solid var(--line);color:var(--ink-2);border-radius:6px;width:32px;height:32px;display:inline-flex;align-items:center;justify-content:center;cursor:pointer;padding:0}
.icon-btn:hover{border-color:var(--accent);color:var(--ink)}
.icon-btn svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.icon-btn.size{font-family:var(--sans);font-weight:650;font-size:calc(13px * var(--ts, 1));letter-spacing:-.02em}
.icon-btn.size[data-level="large"]{font-size:calc(15px * var(--ts, 1))} .icon-btn.size[data-level="larger"]{font-size:calc(17px * var(--ts, 1))}
.icon-btn,.search-btn,.chip,button.chip{transition:border-color .12s,color .12s,background .12s,box-shadow .12s,transform .08s}
.icon-btn:active,.search-btn:active,button.chip:active{transform:scale(.96)}
.search-btn{display:flex;align-items:center;gap:8px;background:var(--panel-2);border:1px solid var(--line);color:var(--dim);border-radius:8px;padding:5px 10px;font-size:calc(13px * var(--ts, 1));cursor:pointer;min-width:150px;max-width:320px;flex:1}
.search-btn:hover{border-color:var(--line-2);color:var(--ink-2)}
.search-btn svg{width:14px;height:14px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round}
.search-btn kbd{margin-left:auto;font-family:var(--mono);font-size:calc(10.5px * var(--ts, 1));border:1px solid var(--line);border-radius:4px;padding:0 5px;color:var(--dim)}
@media (max-width:760px){.site-nav{gap:8px;padding:0 12px}.site-nav .hide-sm{display:none}.search-btn{min-width:0;flex:0 0 auto;padding:6px 8px}.search-btn span,.search-btn kbd{display:none}.site-nav select{max-width:130px;min-width:0}}
@media (max-width:560px){.site-nav .right a{display:none}.site-nav .right{gap:8px}}

/* --- reading progress ---------------------------------------------------- */
.progress{position:fixed;top:0;left:0;height:2px;width:0;background:var(--accent);z-index:6;transition:width .1s linear}

/* --- search palette ------------------------------------------------------ */
.palette{position:fixed;inset:0;z-index:20;display:none;align-items:flex-start;justify-content:center;padding:10vh 16px 16px;background:rgba(0,0,0,.45)}
.palette.on{display:flex}
.palette .box{width:min(680px,100%);background:var(--panel);border:1px solid var(--line-2);border-radius:12px;box-shadow:var(--shadow);overflow:hidden;animation:pop .12s ease-out}
@keyframes pop{from{transform:translateY(-6px);opacity:.6}to{transform:none;opacity:1}}
.palette input{width:100%;background:transparent;border:0;border-bottom:1px solid var(--line);color:var(--ink);font:inherit;font-size:calc(16px * var(--ts, 1));padding:14px 16px;outline:none}
.palette input::placeholder{color:var(--dim)}
.palette .results{max-height:min(60vh,520px);overflow:auto;padding:6px}
.palette .group{font-family:var(--mono);font-size:calc(10.5px * var(--ts, 1));letter-spacing:.06em;text-transform:uppercase;color:var(--dim);padding:8px 10px 3px}
.palette .hit{display:flex;gap:10px;align-items:baseline;padding:7px 10px;border-radius:6px;cursor:pointer;color:var(--ink-2);text-decoration:none}
.palette .hit b{color:var(--ink);font-weight:550;font-size:calc(14px * var(--ts, 1))}
.palette .hit .path{font-size:calc(12px * var(--ts, 1));color:var(--dim);margin-left:auto;white-space:nowrap;max-width:40%;overflow:hidden;text-overflow:ellipsis}
.palette .hit .snip{font-size:calc(12.5px * var(--ts, 1));color:var(--dim);display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:100%}
.palette .hit.sel,.palette .hit:hover{background:var(--accent-soft);color:var(--ink)}
.palette .hit mark{background:transparent;color:var(--accent);font-weight:600}
.palette .empty{padding:18px 14px;color:var(--dim);font-size:calc(13.5px * var(--ts, 1))}
.palette .foot{display:flex;gap:14px;padding:8px 14px;border-top:1px solid var(--line);font-family:var(--mono);font-size:calc(11px * var(--ts, 1));color:var(--dim)}
.palette kbd{border:1px solid var(--line);border-radius:4px;padding:0 5px}

/* --- acronym tooltips ---------------------------------------------------- */
abbr.acr{text-decoration:underline dotted var(--accent-2);text-underline-offset:3px;cursor:help;position:relative;border:0}
abbr.acr::after{content:attr(data-tip);position:absolute;left:0;bottom:calc(100% + 6px);background:var(--panel-3);color:var(--ink);border:1px solid var(--line-2);border-radius:6px;padding:6px 9px;font-size:calc(12.5px * var(--ts, 1));line-height:1.4;white-space:normal;width:max-content;max-width:min(280px,calc(100vw - 32px));box-shadow:var(--shadow);opacity:0;pointer-events:none;transform:translateY(3px);transition:opacity .12s,transform .12s;z-index:4}
abbr.acr:hover::after,abbr.acr:focus-visible::after{opacity:1;transform:none}
/* On a phone a floating tip near the edge is cut off; a strip along the bottom is not. */
@media (max-width:560px){abbr.acr::after{position:fixed;left:12px;right:12px;bottom:12px;top:auto;width:auto;max-width:none}}

/* --- small shared bits --------------------------------------------------- */
.chip{display:inline-block;font-family:var(--mono);font-size:calc(11px * var(--ts, 1));color:var(--accent-2);border:1px solid var(--line);border-radius:4px;padding:2px 7px;text-decoration:none;line-height:1.5}
a.chip:hover,button.chip:hover{border-color:var(--accent);color:var(--ink);box-shadow:0 0 0 3px var(--accent-soft)}
button.chip{background:transparent;cursor:pointer}
.chip.on{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}