/* Mission Mimosa — project site
   Visual language adapted from a warm-ivory / ink technical aesthetic:
   cream background, near-black ink, mono bracketed eyebrows, a single
   lime accent, hairline tan borders, 4px radii, dark code panels. */

@font-face {
  font-family: "Inter var";
  src: url("vendor/fonts/inter-latin.woff2") format("woff2");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Inter var";
  src: url("vendor/fonts/inter-latin-italic.woff2") format("woff2");
  font-weight: 100 900;
  font-style: italic;
  font-display: swap;
}
@font-face {
  font-family: "JetBrains Mono var";
  src: url("vendor/fonts/jetbrains-mono-latin.woff2") format("woff2");
  font-weight: 100 800;
  font-style: normal;
  font-display: swap;
}

:root {
  /* light (default) — warm ivory + ink */
  --bg: #f6f5ee;
  --bg-elev: #efeee2;
  --bg-sunk: #eae8da;
  --panel-dark: #0d0d0d;
  --panel-dark-text: #e7e5da;
  --text: #0d0d0d;
  --text-soft: #4b4a42;
  --text-faint: #8b887a;
  --border: #e1dfd0;
  --border-strong: #cdcab6;
  --accent: #5f9e34;        /* readable green for text/links on ivory */
  --accent-bright: #aef280; /* lime — dots, bars, highlights */
  --accent-ink: #0d0d0d;
  --link: #4c7d29;
  --danger: #b0121f;

  --sidebar-w: 270px;
  --toc-w: 210px;
  --topbar-h: 54px;
  --maxw: 760px;
  --pad-x: 44px;
  --pad-top: 54px;

  --font-sans: "Inter var", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: "JetBrains Mono var", ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;

  --radius: 4px;
}

:root[data-theme="dark"] {
  --bg: #0d0d0d;
  --bg-elev: #161512;
  --bg-sunk: #1c1a16;
  --panel-dark: #050505;
  --panel-dark-text: #e7e5da;
  --text: #f6f5ee;
  --text-soft: #b7b4a7;
  --text-faint: #827f72;
  --border: #2a2823;
  --border-strong: #3c3931;
  --accent: #aef280;
  --accent-bright: #aef280;
  --accent-ink: #0d0d0d;
  --link: #b8f58e;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0d0d0d;
    --bg-elev: #161512;
    --bg-sunk: #1c1a16;
    --panel-dark: #050505;
    --panel-dark-text: #e7e5da;
    --text: #f6f5ee;
    --text-soft: #b7b4a7;
    --text-faint: #827f72;
    --border: #2a2823;
    --border-strong: #3c3931;
    --accent: #aef280;
    --accent-bright: #aef280;
    --accent-ink: #0d0d0d;
    --link: #b8f58e;
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 15.5px;
  line-height: 1.68;
  overflow-x: hidden;
  font-feature-settings: "cv05" 1, "ss01" 1;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 2px; }

/* Mono bracketed eyebrow — the signature label treatment */
.eyebrow,
.nav-group,
.toc-title {
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 400;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-faint);
}
.nav-group::before,
.toc-title::before,
.eyebrow::before { content: "[ "; }
.nav-group::after,
.toc-title::after,
.eyebrow::after { content: " ]"; }

.skip-link {
  position: fixed; left: 8px; top: -60px; z-index: 200;
  background: var(--accent-bright); color: var(--accent-ink);
  padding: 8px 14px; border-radius: var(--radius);
  font-family: var(--font-mono); font-size: 12px; text-transform: uppercase; letter-spacing: .08em;
  transition: top .15s;
}
.skip-link:focus { top: 8px; }

/* ---------- Topbar ---------- */
.topbar {
  position: sticky; top: 0; z-index: 50;
  height: var(--topbar-h);
  display: flex; align-items: center; gap: 8px;
  padding: 0 16px;
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--border);
}
.topbar-title {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text);
}
.topbar-title:hover { text-decoration: none; color: var(--accent); }
.topbar-spacer { flex: 1; }

.icon-btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 36px; height: 36px; border-radius: var(--radius);
  color: var(--text-soft); background: transparent; border: 1px solid transparent;
  cursor: pointer;
}
.icon-btn:hover { background: var(--bg-elev); color: var(--text); border-color: var(--border); text-decoration: none; }
#menu-toggle { display: none; }

.i-moon { display: none; }
:root[data-theme="dark"] .i-sun { display: none; }
:root[data-theme="dark"] .i-moon { display: inline; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .i-sun { display: none; }
  :root:not([data-theme="light"]) .i-moon { display: inline; }
}

/* ---------- Layout ---------- */
.layout {
  display: grid;
  grid-template-columns: var(--sidebar-w) minmax(0, 1fr);
  align-items: start;
}

.sidebar {
  position: sticky; top: var(--topbar-h);
  height: calc(100vh - var(--topbar-h));
  overflow-y: auto;
  padding: 26px 18px 48px;
  border-right: 1px solid var(--border);
  background: var(--bg);
}

.brand {
  display: flex; gap: 11px; align-items: center;
  margin: 2px 6px 26px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--border);
}
.brand-mark {
  flex: none;
  width: 26px; height: 26px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-auto-rows: 1fr;
  gap: 2px;
}
.brand-mark i {
  background: var(--border-strong);
  border-radius: 1px;
}
.brand-mark i:nth-child(1),
.brand-mark i:nth-child(5),
.brand-mark i:nth-child(6),
.brand-mark i:nth-child(8) { background: var(--accent-bright); }
.brand-text { display: flex; flex-direction: column; min-width: 0; }
.brand-text strong {
  font-family: var(--font-mono);
  font-size: 12px; font-weight: 400; letter-spacing: .14em; text-transform: uppercase;
  color: var(--text);
}
.brand-text em {
  font-style: normal; font-size: 12px; color: var(--text-faint); margin-top: 3px;
  letter-spacing: 0;
}

.nav-group { margin: 24px 8px 8px; display: block; }

.nav-link {
  display: block;
  padding: 7px 12px;
  margin: 1px 0;
  border-left: 2px solid transparent;
  color: var(--text-soft);
  font-size: 14px;
}
.nav-link:hover { color: var(--text); background: var(--bg-elev); text-decoration: none; }
.nav-link.active {
  color: var(--text);
  font-weight: 600;
  border-left-color: var(--accent-bright);
  background: color-mix(in srgb, var(--accent-bright) 12%, transparent);
}

.nav-footer {
  margin-top: 30px; padding: 16px 12px 0;
  border-top: 1px solid var(--border);
  font-family: var(--font-mono); font-size: 11px; letter-spacing: .04em;
}
.nav-footer a { color: var(--text-faint); }
.nav-footer a:hover { color: var(--accent); }

.scrim { position: fixed; inset: 0; background: rgba(0,0,0,.5); z-index: 40; }

/* ---------- Content ---------- */
.content {
  display: grid;
  grid-template-columns: minmax(0, 1fr) var(--toc-w);
  gap: 52px;
  max-width: calc(var(--maxw) + var(--toc-w) + 52px);
  margin: 0 auto;
  padding: var(--pad-top) var(--pad-x) 140px;
  outline: none;
}
.doc { min-width: 0; animation: rise .5s cubic-bezier(.32,.72,0,1); }
@keyframes rise { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

/* ---------- Hero (Overview route only) ---------- */
#hero { display: none; }
body[data-route=""] #hero { display: block; }

/* On the Overview route the hero surfaces the doc's title + tagline verbatim,
   so suppress the immediate duplicates in the rendered README (source unchanged) */
body[data-route=""] .markdown-body > h1:first-child,
body[data-route=""] .markdown-body > h1:first-child + p + p { display: none; }

#hero {
  position: relative;
  grid-column: 1 / -1;
  margin: calc(-1 * var(--pad-top)) calc(-1 * var(--pad-x)) 26px;
  height: clamp(360px, 60vh, 540px);
  overflow: hidden;
  background: #0d0d0d;
  border-bottom: 1px solid var(--border);
  animation: rise .5s cubic-bezier(.32,.72,0,1);
}
.hero-media {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: 50% 32%;
  filter: saturate(.9) contrast(1.03) blur(.5px);
  transform: scale(1.02);
  display: block;
}
.hero-scrim {
  position: absolute; inset: 0;
  background:
    linear-gradient(180deg, rgba(13,13,13,.34) 0%, rgba(13,13,13,.16) 30%, rgba(13,13,13,.62) 72%, rgba(13,13,13,.9) 100%),
    linear-gradient(75deg, rgba(13,13,13,.72) 0%, rgba(13,13,13,.28) 34%, transparent 62%);
}
.hero-fade {
  position: absolute; left: 0; right: 0; bottom: 0;
  height: 64px;
  background: linear-gradient(180deg, transparent, var(--bg));
}
.hero-inner {
  position: absolute; inset: 0;
  display: flex; flex-direction: column; justify-content: flex-end;
  gap: 12px;
  padding: 0 clamp(22px, 4vw, 54px) clamp(30px, 6vh, 60px);
  color: #f6f5ee;
}
.hero-eyebrow { color: rgba(246,245,238,.72); margin: 0; }
.hero-title {
  margin: 0;
  font-size: clamp(2.6rem, 7vw, 5rem);
  font-weight: 500;
  line-height: .98;
  letter-spacing: -0.03em;
  color: #f6f5ee;
}
.hero-sub {
  margin: 0;
  font-size: clamp(1rem, 2.1vw, 1.35rem);
  color: rgba(246,245,238,.82);
}

.doc-loading, .doc-error {
  font-family: var(--font-mono); font-size: 12px; letter-spacing: .06em; text-transform: uppercase;
  color: var(--text-faint); padding: 32px 0;
}
.doc-error { color: var(--danger); }

/* ---------- Table of contents ---------- */
.toc {
  position: sticky; top: calc(var(--topbar-h) + 54px);
  align-self: start;
  max-height: calc(100vh - var(--topbar-h) - 90px);
  overflow-y: auto;
  font-size: 12.5px;
  border-left: 1px solid var(--border);
  padding-left: 20px;
}
.toc-title { display: block; margin-bottom: 12px; }
.toc a {
  display: block; padding: 4px 0;
  color: var(--text-faint); line-height: 1.4;
  border-left: 2px solid transparent; margin-left: -20px; padding-left: 18px;
}
.toc a:hover { color: var(--text); text-decoration: none; }
.toc a.lvl-1 { color: var(--text-soft); font-weight: 600; margin-top: 6px; }
.toc a.lvl-3 { padding-left: 30px; font-size: 12px; }
.toc a.active {
  color: var(--text);
  border-left-color: var(--accent-bright);
}

/* ---------- Markdown body ---------- */
.markdown-body h1,
.markdown-body h2,
.markdown-body h3,
.markdown-body h4 {
  line-height: 1.2;
  scroll-margin-top: calc(var(--topbar-h) + 24px);
  font-weight: 600;
}
.markdown-body {
  overflow-wrap: break-word;
}
.markdown-body h1 {
  font-size: 2.35rem;
  font-weight: 500;
  letter-spacing: -0.022em;
  margin: 0 0 .7em;
}
/* Additional top-level headings inside one document act as major section breaks */
.markdown-body h1 ~ h1 {
  font-size: 1.6rem;
  font-weight: 550;
  margin: 2.8em 0 1em;
  padding-top: 1.3em;
  border-top: 2px solid var(--accent-bright);
}

/* A doc-authored "---" right before a heading would double the rule + spacing */
.markdown-body hr:has(+ h1),
.markdown-body hr:has(+ h2) { display: none; }
.markdown-body h2 {
  font-size: 1.45rem;
  font-weight: 550;
  letter-spacing: -0.015em;
  margin: 2.4em 0 .85em;
  padding-top: 1.4em;
  border-top: 1px solid var(--border);
}
.markdown-body h3 { font-size: 1.14rem; margin: 2em 0 .6em; letter-spacing: -0.01em; }
.markdown-body h4 {
  font-family: var(--font-mono);
  font-size: .8rem; font-weight: 400; text-transform: uppercase; letter-spacing: .1em;
  color: var(--text-soft);
  margin: 1.7em 0 .6em;
}

.markdown-body p { margin: 0 0 1.15em; }
.markdown-body strong { font-weight: 650; }
.markdown-body a { color: var(--link); text-decoration: underline; text-decoration-color: color-mix(in srgb, var(--link) 35%, transparent); text-underline-offset: 2px; }
.markdown-body a:hover { text-decoration-color: var(--link); }

.markdown-body ul,
.markdown-body ol { margin: 0 0 1.15em; padding-left: 1.4em; }
.markdown-body li { margin: .4em 0; }
.markdown-body li::marker { color: var(--text-faint); }
.markdown-body li > ul,
.markdown-body li > ol { margin: .4em 0; }

.markdown-body hr {
  border: 0; border-top: 1px solid var(--border);
  margin: 2.6em 0;
}

.markdown-body blockquote {
  margin: 0 0 1.15em;
  padding: .1em 1.1em;
  border-left: 2px solid var(--accent-bright);
  color: var(--text-soft);
}
.markdown-body blockquote p:last-child { margin-bottom: 0; }

/* Inline code */
.markdown-body :not(pre) > code {
  font-family: var(--font-mono);
  font-size: .85em;
  background: var(--bg-sunk);
  border: 1px solid var(--border);
  padding: .1em .4em;
  border-radius: 3px;
  white-space: break-spaces;
}

/* Code blocks & ASCII diagrams — dark panel in both themes */
.markdown-body pre {
  position: relative;
  margin: 0 0 1.4em;
  padding: 18px 20px;
  background: var(--panel-dark);
  color: var(--panel-dark-text);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  overflow-x: auto;
  font-size: 12.5px;
  line-height: 1.6;
}
.markdown-body pre code {
  font-family: var(--font-mono);
  background: none; border: 0; padding: 0;
  white-space: pre;
  color: inherit;
}

.copy-btn {
  position: absolute; top: 8px; right: 8px;
  font: 400 10px/1 var(--font-mono);
  letter-spacing: .1em; text-transform: uppercase;
  color: #8f8d82;
  background: transparent;
  border: 1px solid #34322c;
  border-radius: 3px;
  padding: 5px 8px;
  cursor: pointer;
  opacity: 0;
  transition: opacity .12s, color .12s, border-color .12s;
}
.markdown-body pre:hover .copy-btn,
.copy-btn:focus { opacity: 1; }
.copy-btn:hover { color: var(--accent-bright); border-color: var(--accent-bright); }
.copy-btn.copied { color: var(--accent-bright); border-color: var(--accent-bright); }

/* Tables */
.markdown-body .table-wrap { overflow-x: auto; margin: 0 0 1.4em; border: 1px solid var(--border); border-radius: var(--radius); }
.markdown-body table { border-collapse: collapse; width: 100%; font-size: 13.5px; }
.markdown-body th,
.markdown-body td { border-bottom: 1px solid var(--border); border-right: 1px solid var(--border); padding: 9px 13px; text-align: left; }
.markdown-body tr > *:last-child { border-right: 0; }
.markdown-body tbody tr:last-child > * { border-bottom: 0; }
.markdown-body thead th {
  background: var(--bg-elev);
  font-family: var(--font-mono);
  font-weight: 400; font-size: 11px; text-transform: uppercase; letter-spacing: .07em;
  color: var(--text-soft);
}
.markdown-body tbody tr:nth-child(even) { background: color-mix(in srgb, var(--bg-elev) 45%, transparent); }

/* Images / media */
.markdown-body img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 1.6em auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-elev);
}
.markdown-body em { color: var(--text-soft); }
.markdown-body p[align="center"] { text-align: center; }
.markdown-body p[align="center"] em { display: inline-block; margin-top: .4em; font-size: .9em; }

/* KaTeX */
.markdown-body .math-block {
  overflow-x: auto; overflow-y: hidden;
  padding: 10px 2px 16px;
  margin: 0 0 1.15em;
}
.markdown-body .katex { font-size: 1.04em; }
.markdown-body .katex-display { margin: 0; }
.markdown-body .math-fallback {
  background: var(--panel-dark); color: var(--panel-dark-text);
  border-radius: var(--radius); padding: 12px 16px; font-size: 12.5px;
}

/* ---------- Success-rate charts ---------- */
/* Styled to match the π0.5 ablation-chart aesthetic: a clean panel with a
   color legend, a labelled percentage axis, horizontal gridlines, and
   grouped coloured bars carrying value labels. */
.chart {
  margin: 0 0 1.8em;
  padding: 20px 22px 22px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-elev);
  box-shadow: 0 1px 2px rgba(0,0,0,.03);
}
.chart-error { color: var(--danger); font-family: var(--font-mono); font-size: 12px; text-transform: uppercase; letter-spacing: .08em; margin: 0 0 8px; }
.chart-raw { margin: 0; padding: 10px 12px; background: var(--panel-dark); color: var(--panel-dark-text); border-radius: var(--radius); font-size: 12px; overflow-x: auto; }

.chart-head {
  display: flex; justify-content: space-between; align-items: flex-start; gap: 18px;
  flex-wrap: wrap; margin-bottom: 20px;
}
.chart-title {
  font-family: var(--font-mono); font-size: 13px; font-weight: 600;
  letter-spacing: .02em; color: var(--text);
}
.chart-legend {
  display: flex; gap: 14px; flex-wrap: wrap;
  font-family: var(--font-mono); font-size: 11px; letter-spacing: .02em; color: var(--text-soft);
}
.chart-legend-item { display: inline-flex; align-items: center; gap: 6px; }
.chart-legend-item i { width: 11px; height: 11px; border-radius: 3px; display: inline-block; }

.chart-body {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 10px;
  position: relative;
}
.chart-meta {
  position: relative;
  height: 216px;
  font-family: var(--font-mono); font-size: 10px; color: var(--text-faint);
}
.chart-tick {
  position: absolute; right: 0;
  transform: translateY(50%);
  line-height: 1;
}
.chart-plot { position: relative; }

.chart-groups {
  position: relative;
  display: grid;
  grid-auto-columns: minmax(0, 1fr);
  grid-auto-flow: column;
  gap: 26px;
  align-items: stretch;
}
.chart-group {
  display: flex; flex-direction: column; height: 100%; min-width: 0;
}
.chart-bars {
  position: relative;
  height: 216px;
  display: flex; align-items: flex-end; justify-content: center; gap: 10px;
  border-bottom: 1px solid var(--border-strong);
}
/* full-height gridlines behind the bars, one per each 20% axis step */
.chart-bars::before {
  content: "";
  position: absolute; left: 0; right: 0; top: 0; bottom: 0;
  background-image: repeating-linear-gradient(
    to bottom,
    var(--border) 0,
    var(--border) 1px,
    transparent 1px,
    transparent calc(100% / 5)
  );
  opacity: .7;
  pointer-events: none;
}
.chart-bar {
  position: relative;
  width: 30px;
  max-width: 34%;
  background: var(--border-strong);
  border-radius: 3px 3px 0 0;
  transition: filter .15s;
}
.chart-bar:hover { filter: brightness(1.05); }

/* Series palette — theme-independent distinct hues that read on both the
   light ivory and dark backgrounds, so every series stays distinguishable */
.chart-bar.ch-s1 { background: #8fb94e; }
.chart-bar.ch-s2 { background: #4f9bc9; }
.chart-bar.ch-s3 { background: #c085d6; }
.chart-bar.ch-s4 { background: #f0a45c; }
.chart-bar.ch-s5 { background: #d96b6b; }
.chart-bar.ch-s6 { background: #63b58f; }
.chart-bar.ch-s7 { background: #d1a64f; }
.chart-bar.ch-s8 { background: #a8836b; }
.chart-legend-item .ch-s1 { background: #8fb94e; }
.chart-legend-item .ch-s2 { background: #4f9bc9; }
.chart-legend-item .ch-s3 { background: #c085d6; }
.chart-legend-item .ch-s4 { background: #f0a45c; }
.chart-legend-item .ch-s5 { background: #d96b6b; }
.chart-legend-item .ch-s6 { background: #63b58f; }
.chart-legend-item .ch-s7 { background: #d1a64f; }
.chart-legend-item .ch-s8 { background: #a8836b; }

.chart-val {
  position: absolute; top: -6px; left: 50%;
  transform: translate(-50%, -100%);
  font-family: var(--font-mono); font-size: 11px; font-weight: 600;
  color: var(--text);
  white-space: nowrap;
}
.chart-val::after {
  content: "";
  position: absolute; left: 50%; top: 100%; transform: translateX(-50%);
  width: 1px; height: 6px;
  background: var(--text-faint);
  opacity: .5;
}
.chart-barlabels {
  display: flex; align-items: center; justify-content: center; gap: 10px;
  padding-top: 8px;
}
.chart-bl {
  width: 30px; max-width: 34%;
  flex: none; text-align: center; overflow: hidden;
  font-family: var(--font-mono); font-size: 10px; line-height: 1.2;
  color: var(--text-soft);
}
.chart-grouplab {
  margin-top: 12px; padding-top: 10px;
  font-family: var(--font-mono); font-size: 11px; font-weight: 600;
  letter-spacing: .08em; text-transform: uppercase; text-align: center;
  color: var(--text);
  border-top: 1px solid var(--border);
}
.chart-xlabel {
  margin-top: 12px;
  text-align: center;
  font-family: var(--font-mono); font-size: 10px; letter-spacing: .06em;
  text-transform: uppercase; color: var(--text-faint);
}

@media (max-width: 560px) {
  .chart-groups { gap: 14px; }
  .chart-bar, .chart-bl { width: 22px; }
  .chart-legend { gap: 10px; row-gap: 6px; }
}

/* ---------- Responsive ---------- */
@media (max-width: 1120px) {
  .content { display: block; max-width: var(--maxw); }
  .toc { display: none; }
}

@media (max-width: 860px) {
  #menu-toggle { display: inline-flex; }
  .layout { display: block; }
  .sidebar {
    position: fixed; top: 0; left: 0; z-index: 45;
    height: 100vh; width: min(85vw, 310px);
    transform: translateX(-100%);
    transition: transform .24s cubic-bezier(.32,.72,0,1);
    border-right: 1px solid var(--border-strong);
  }
  .sidebar.open { transform: translateX(0); box-shadow: 0 0 60px rgba(0,0,0,.25); }
  .content { --pad-x: 22px; --pad-top: 32px; }
  .markdown-body h1 { font-size: 1.95rem; }
  .markdown-body h2 { font-size: 1.3rem; }
  #hero { height: clamp(320px, 56vh, 460px); margin-bottom: 44px; }
  .hero-title { font-size: clamp(2.2rem, 12vw, 3.2rem); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .sidebar { transition: none; }
  .doc { animation: none; }
}