/* ------------------------------------------------------------------
   NEON PURGE research report - self-contained stylesheet.
   Palette lifted from the repo's own styles.css / src/core/palette.js
   (read-only source; no external fonts, images, or CDNs anywhere).
   Evidence as of 2026-10-09.
   ------------------------------------------------------------------ */

:root {
  --bg:     #05060e;
  --bg1:    #0a0d1c;
  --bg2:    #11162e;
  --grid:   #1b2350;
  --gridBright: #2a3a7a;
  --cyan:   #2de2ff;
  --ice:    #8ef6ff;
  --violet: #9d7bff;
  --lime:   #b6ff3b;
  --gold:   #ffe066;
  --mint:   #35f0b0;
  --red:    #ff2d55;
  --orange: #ffa53b;
  --dim:    #7fa8c9;
  --ui2:    #3d5a7a;
  --white:  #dff6ff;

  --font-mono: ui-monospace, "Cascadia Mono", Consolas, "SF Mono", Menlo, monospace;
  --font-ui: system-ui, "Segoe UI", Roboto, sans-serif;

  --maxw: 1180px;
  --rad: 4px;
}

* { box-sizing: border-box; }

html { color-scheme: dark; -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 5.5rem; }

body {
  margin: 0;
  background:
    radial-gradient(1200px 600px at 12% -10%, rgba(45, 226, 255, 0.10), transparent 60%),
    radial-gradient(900px 500px at 100% 0%, rgba(157, 123, 255, 0.10), transparent 55%),
    linear-gradient(#05060e, #05060e);
  color: var(--dim);
  font-family: var(--font-ui);
  font-size: 16px;
  line-height: 1.6;
}

/* faint neon grid, pure CSS */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(45, 226, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(45, 226, 255, 0.05) 1px, transparent 1px);
  background-size: 64px 64px;
  z-index: 0;
}

.wrap { position: relative; z-index: 1; max-width: var(--maxw); margin: 0 auto; padding: 0 1.25rem 6rem; }

/* ---------------------------------------------------------------- banner */
.banner {
  position: sticky;
  top: 0;
  z-index: 5;
  background: rgba(5, 6, 14, 0.92);
  border-bottom: 1px solid var(--gridBright);
  backdrop-filter: blur(6px);
}
.banner .wrap { padding: 0.35rem 1.25rem; display: flex; flex-wrap: wrap; gap: 0.5rem 1.25rem; align-items: center; }
.banner strong { color: var(--gold); letter-spacing: 0.08em; font-family: var(--font-mono); font-size: 0.78rem; }
.banner span { font-size: 0.78rem; color: var(--dim); }
.banner .dot { color: var(--mint); }

/* ---------------------------------------------------------------- header */
header.hero { padding: 3.25rem 0 1rem; }
.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: var(--cyan);
}
h1 {
  font-family: var(--font-mono);
  font-size: clamp(1.7rem, 4.6vw, 2.9rem);
  line-height: 1.12;
  letter-spacing: 0.02em;
  color: var(--white);
  margin: 0.55rem 0 0.75rem;
  text-shadow: 0 0 22px rgba(45, 226, 255, 0.35);
}
.lede { font-size: 1.06rem; max-width: 74ch; color: var(--dim); }
.lede b { color: var(--ice); }

/* ---------------------------------------------------------------- nav */
nav.toc {
  position: sticky;
  top: 2.15rem;
  z-index: 4;
  margin: 1.5rem 0 0;
  padding: 0.6rem 0;
  border-top: 1px solid var(--grid);
  border-bottom: 1px solid var(--grid);
  background: rgba(5, 6, 14, 0.9);
}
nav.toc ul { list-style: none; display: flex; flex-wrap: wrap; gap: 0.3rem 0.85rem; margin: 0; padding: 0; }
nav.toc a {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--dim);
  text-decoration: none;
  padding: 0.15rem 0.35rem;
  border: 1px solid transparent;
  border-radius: var(--rad);
  white-space: nowrap;
}
nav.toc a:hover, nav.toc a:focus { color: var(--ice); border-color: var(--gridBright); }
nav.toc .n { color: var(--cyan); }

/* ---------------------------------------------------------------- sections */
section { margin-top: 3.5rem; }
h2 {
  font-family: var(--font-mono);
  font-size: 1.22rem;
  letter-spacing: 0.06em;
  color: var(--ice);
  margin: 0 0 0.35rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--gridBright);
}
h2 .num { color: var(--cyan); margin-right: 0.6rem; }
h3 {
  font-family: var(--font-mono);
  font-size: 0.98rem;
  letter-spacing: 0.04em;
  color: var(--white);
  margin: 1.85rem 0 0.4rem;
}
h4 { font-size: 0.92rem; color: var(--ice); margin: 1.25rem 0 0.35rem; }
p { margin: 0.7rem 0; max-width: 92ch; }
ul, ol { max-width: 92ch; padding-left: 1.15rem; }
li { margin: 0.3rem 0; }
li > ul, li > ol { margin: 0.3rem 0; }
small { font-size: 0.82rem; }
code, .mono { font-family: var(--font-mono); font-size: 0.86em; }
code { color: var(--ice); background: rgba(45, 226, 255, 0.07); padding: 0.05em 0.32em; border-radius: 3px; }
a { color: var(--cyan); text-decoration-color: rgba(45, 226, 255, 0.4); }
a:hover { color: var(--ice); }
strong { color: var(--white); }

/* source chips: note filenames shown as TEXT (they do not resolve on Pages) */
.src {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--dim);
  border: 1px solid var(--gridBright);
  border-radius: var(--rad);
  padding: 0.05rem 0.4rem;
  margin: 0 0.15rem 0.15rem 0;
  white-space: nowrap;
}
.src::before { content: "source: "; color: var(--ui2); }

/* ---------------------------------------------------------------- badges */
.badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.1rem 0.42rem;
  border-radius: 999px;
  border: 1px solid currentColor;
  white-space: nowrap;
}
.b-ok   { color: var(--mint); }
.b-warn { color: var(--gold); }
.b-bad  { color: var(--red); }
.b-info { color: var(--cyan); }
.b-prov { color: var(--violet); }

/* ---------------------------------------------------------------- tables */
.tablewrap {
  margin: 1rem 0;
  overflow-x: auto;
  border: 1px solid var(--gridBright);
  border-radius: var(--rad);
  background: linear-gradient(rgba(17, 22, 46, 0.55), rgba(10, 13, 28, 0.55));
}
table { border-collapse: collapse; width: 100%; font-size: 0.83rem; }
caption {
  caption-side: top;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--dim);
  padding: 0.5rem 0.75rem;
  border-bottom: 1px solid var(--grid);
}
th, td { text-align: left; padding: 0.44rem 0.65rem; border-bottom: 1px solid rgba(42, 58, 122, 0.5); vertical-align: top; }
thead th {
  position: sticky;
  top: 0;
  background: #0c1124;
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  font-weight: 500;
  z-index: 1;
}
tbody tr:hover { background: rgba(45, 226, 255, 0.045); }
tbody tr:last-child td { border-bottom: none; }
td.num, th.num { font-family: var(--font-mono); white-space: nowrap; }
td.pick { color: var(--white); font-weight: 600; }
.tier1 td.pick, tr.tier1 td.pick { color: var(--lime); }

/* ---------------------------------------------------------------- cards */
.grid { display: grid; gap: 0.9rem; margin: 1rem 0; grid-template-columns: repeat(auto-fit, minmax(255px, 1fr)); }
.card {
  border: 1px solid var(--gridBright);
  border-radius: var(--rad);
  padding: 0.85rem 0.95rem;
  background: linear-gradient(rgba(17, 22, 46, 0.62), rgba(10, 13, 28, 0.62));
}
.card h4 { margin: 0 0 0.3rem; font-family: var(--font-mono); font-size: 0.84rem; letter-spacing: 0.03em; color: var(--ice); }
.card p { margin: 0.3rem 0 0; font-size: 0.86rem; max-width: none; }
.card.good { border-color: rgba(53, 240, 176, 0.45); }
.card.warn { border-color: rgba(255, 224, 102, 0.45); }
.card.bad  { border-color: rgba(255, 45, 85, 0.45); }

/* callouts */
.callout {
  border-left: 2px solid var(--violet);
  background: rgba(157, 123, 255, 0.07);
  padding: 0.7rem 0.95rem;
  margin: 1rem 0;
  border-radius: 0 var(--rad) var(--rad) 0;
  font-size: 0.9rem;
}
.callout.danger { border-left-color: var(--red); background: rgba(255, 45, 85, 0.07); }
.callout.note { border-left-color: var(--gold); background: rgba(255, 224, 102, 0.06); }
.callout .tag { display: block; font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.14em; text-transform: uppercase; margin-bottom: 0.25rem; color: var(--violet); }
.callout.danger .tag { color: var(--red); }
.callout.note .tag { color: var(--gold); }

/* layer-stack diagram (CSS only, no images) */
.layers { margin: 1rem 0; border: 1px solid var(--gridBright); border-radius: var(--rad); overflow: hidden; }
.layer { display: grid; grid-template-columns: 6.6rem 1fr; gap: 0.8rem; padding: 0.6rem 0.85rem; border-bottom: 1px solid rgba(42, 58, 122, 0.45); }
.layer:last-child { border-bottom: none; }
.layer .lt { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.11em; text-transform: uppercase; color: var(--cyan); }
.layer .lv { color: var(--white); font-size: 0.9rem; }
.layer .lv em { color: var(--dim); font-style: normal; }

pre {
  background: #080b18;
  border: 1px solid var(--grid);
  border-radius: var(--rad);
  padding: 0.8rem 0.95rem;
  overflow-x: auto;
  font-size: 0.8rem;
  line-height: 1.5;
  color: var(--ice);
}
pre code { background: none; padding: 0; color: inherit; }

.flow { font-family: var(--font-mono); font-size: 0.79rem; }
.flow b { color: var(--lime); }
.flow i { color: var(--dim); font-style: normal; }

footer { margin-top: 4rem; padding-top: 1.25rem; border-top: 1px solid var(--grid); font-size: 0.8rem; color: var(--ui2); }

/* filter box */
.filter { display: flex; flex-wrap: wrap; gap: 0.6rem; align-items: center; margin: 0.75rem 0 0.25rem; }
.filter input {
  background: #080b18;
  border: 1px solid var(--gridBright);
  border-radius: var(--rad);
  color: var(--white);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  padding: 0.35rem 0.55rem;
  min-width: 17rem;
}
.filter input:focus { outline: 1px solid var(--cyan); }
.filter .hint, .filter .count { font-family: var(--font-mono); font-size: 0.72rem; color: var(--ui2); }
.is-hidden { display: none !important; }

@media (max-width: 640px) {
  .layer { grid-template-columns: 1fr; gap: 0.15rem; }
  nav.toc { top: 3.1rem; }
}
@media print {
  body::before, .banner { display: none; }
  nav.toc { position: static; }
}