/*
 * notes.css: the one stylesheet for every page in a project's .notes/
 * notes.py copies it to .notes/notes.css; edit it here, in the notes skill, never in a project
 *
 * gruvbox material (sainnhe/gruvbox-material: medium contrast, material foreground), light or dark
 * by the system scheme; jetbrains mono for all text
 *
 * page skeleton for a doc (docs/dNNN-slug.html; one level deeper for a folder doc):
 *   <link rel="stylesheet" href="../notes.css">
 *   <body><main class="page">
 *     <nav class="back"><a href="../index.html">← notes</a></nav>
 *     <header>
 *       <p class="eyebrow">d007 · 2026-10-13</p>
 *       <h1>Title</h1>
 *       <p class="status current|stale|superseded">status: …</p>
 *       <p class="lede">one or two sentences</p>
 *     </header>
 *     <section><h2>…</h2> …</section>
 *   </main></body>
 *
 * components:
 *   .callout (+ .good .warn .bad .info)        a boxed note, recommendation, open point
 *   .tag (+ .good .warn .bad .info .muted)     a small inline label
 *   .cards > .card (.card-id, strong, small)   a grid of linked or plain cards
 *   .grid-2                                    two columns, one on a phone
 *   .table > table                             a table that scrolls sideways when wide
 *   figure.diagram > svg (+ figcaption)        an inline svg diagram, see "diagrams" below
 *   dl.facts > dt + dd                         label and value pairs in two columns (repro, cause, fix)
 *   pre.diff > span(.add .del)                 a unified diff, one span per line
 *   .legend > span > svg + text                a row of notation keys above a diagram
 *   .swatch (+ .info .good .warn .bad)         a small colour square that matches a diagram box
 *   main.page.wide                             a wider page, for pages carried by wide diagrams
 *   .sub, .muted                               secondary text
 *   .fix                                       a line prefixed with an arrow
 */

@import url("https://fonts.googleapis.com/css2?family=JetBrains+Mono:ital,wght@0,400;0,500;0,600;0,700;1,400&display=swap");

:root {
  color-scheme: light dark;
  --radius: 0.375rem;

  /* gruvbox material light */
  --red: #c14a4a;
  --orange: #c35e0a;
  --yellow: #b47109;
  --green: #6c782e;
  --aqua: #4c7a5d;
  --blue: #45707a;
  --purple: #945e80;

  --background: #fbf1c7;
  --foreground: #654735;
  --card: #f4e8be;
  --muted: #eee0b7;
  --muted-foreground: #7c6f64;
  --border: #ddccab;
  --input: #a89984;
  --link: var(--blue);

  /* text colours and their tints, both follow the scheme's palette */
  --good: var(--green);
  --warn: var(--yellow);
  --bad: var(--red);
  --info: var(--blue);
  --good-bg: color-mix(in srgb, var(--green) 14%, transparent);
  --warn-bg: color-mix(in srgb, var(--yellow) 16%, transparent);
  --bad-bg: color-mix(in srgb, var(--red) 13%, transparent);
  --info-bg: color-mix(in srgb, var(--blue) 13%, transparent);
  --accent: var(--orange);
  --accent-bg: color-mix(in srgb, var(--orange) 12%, transparent);

  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    /* gruvbox material dark */
    --red: #ea6962;
    --orange: #e78a4e;
    --yellow: #d8a657;
    --green: #a9b665;
    --aqua: #89b482;
    --blue: #7daea3;
    --purple: #d3869b;

    --background: #282828;
    --foreground: #d4be98;
    --card: #32302f;
    --muted: #45403d;
    --muted-foreground: #a89984;
    --border: #45403d;
    --input: #5a524c;
    --good-bg: color-mix(in srgb, var(--green) 16%, transparent);
    --warn-bg: color-mix(in srgb, var(--yellow) 15%, transparent);
    --bad-bg: color-mix(in srgb, var(--red) 16%, transparent);
    --info-bg: color-mix(in srgb, var(--blue) 16%, transparent);
    --accent-bg: color-mix(in srgb, var(--orange) 15%, transparent);
  }
}

/* base */

*,
*::before,
*::after {
  box-sizing: border-box;
}
html {
  scrollbar-gutter: stable;
  -webkit-text-size-adjust: 100%;
}
body {
  margin: 0;
  background: var(--background);
  color: var(--foreground);
  font: 400 14px/1.65 var(--font-mono);
  -webkit-font-smoothing: antialiased;
}
main.page {
  max-width: 860px;
  margin: 0 auto;
  padding: 24px 16px 96px;
}
main.page.wide {
  max-width: 1240px;
}
a {
  color: var(--link);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}
a:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 2px;
  border-radius: 3px;
}

h1,
h2,
h3,
h4 {
  font-weight: 600;
  line-height: 1.25;
  text-wrap: balance;
  margin: 0;
}
h1 {
  font-size: 26px;
}
h2 {
  font-size: 19px;
  margin: 44px 0 12px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}
h3 {
  font-size: 16px;
  margin: 28px 0 8px;
}
h4 {
  font-size: 15px;
  margin: 20px 0 6px;
}
section > h2:first-child {
  margin-top: 40px;
}
p,
ul,
ol,
blockquote,
pre,
figure,
.table,
.callout,
.cards,
.grid-2,
details {
  margin: 0 0 14px;
}
ul,
ol {
  padding-left: 22px;
}
li + li {
  margin-top: 4px;
}
li > ul,
li > ol {
  margin: 4px 0 0;
}
strong,
b {
  font-weight: 600;
}
hr {
  border: 0;
  border-top: 1px solid var(--border);
  margin: 32px 0;
}
blockquote {
  padding: 2px 0 2px 16px;
  border-left: 3px solid var(--border);
  color: var(--muted-foreground);
}
img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

code,
kbd,
pre,
.mono {
  font-family: var(--font-mono);
  font-size: 0.93em;
}
code {
  background: var(--muted);
  padding: 1px 5px;
  border-radius: 4px;
  overflow-wrap: break-word;
}
pre {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 14px;
  overflow-x: auto;
  line-height: 1.5;
}
pre code {
  background: none;
  padding: 0;
  font-size: 1em;
  overflow-wrap: normal;
}

/* page chrome */

nav.back {
  font-size: 13px;
  margin-bottom: 28px;
}
nav.back a {
  color: var(--muted-foreground);
}
nav.back a:hover {
  color: var(--link);
}
header {
  margin-bottom: 8px;
}
header > * + * {
  margin-top: 10px;
}
.eyebrow {
  font: 500 12px/1.4 var(--font-mono);
  letter-spacing: 0.04em;
  color: var(--muted-foreground);
  margin: 0;
}
.lede {
  font-size: 17px;
  line-height: 1.6;
  margin-top: 14px;
}
.sub,
.muted {
  color: var(--muted-foreground);
}
p.status {
  display: inline-block;
  font-size: 13px;
  line-height: 1.5;
  padding: 3px 10px;
  border-radius: 6px;
  background: var(--muted);
  color: var(--muted-foreground);
}
p.status.current {
  background: var(--good-bg);
  color: var(--good);
}
p.status.stale {
  background: var(--warn-bg);
  color: var(--warn);
}
.fix::before {
  content: "→ ";
  color: var(--accent);
  font-weight: 600;
}

/* components */

.callout {
  background: var(--card);
  border: 1px solid var(--border);
  border-left: 3px solid var(--input);
  border-radius: var(--radius);
  padding: 10px 14px;
}
.callout > :last-child {
  margin-bottom: 0;
}
.callout.good {
  background: var(--good-bg);
  border-color: transparent;
  border-left-color: var(--good);
}
.callout.warn {
  background: var(--warn-bg);
  border-color: transparent;
  border-left-color: var(--warn);
}
.callout.bad {
  background: var(--bad-bg);
  border-color: transparent;
  border-left-color: var(--bad);
}
.callout.info {
  background: var(--info-bg);
  border-color: transparent;
  border-left-color: var(--info);
}

.tag {
  display: inline-block;
  font: 500 11px/1.5 var(--font-mono);
  letter-spacing: 0.02em;
  padding: 1px 8px;
  border-radius: 99px;
  white-space: nowrap;
  vertical-align: 1px;
  background: var(--muted);
  color: var(--muted-foreground);
}
.tag.good {
  background: var(--good-bg);
  color: var(--good);
}
.tag.warn {
  background: var(--warn-bg);
  color: var(--warn);
}
.tag.bad {
  background: var(--bad-bg);
  color: var(--bad);
}
.tag.info {
  background: var(--info-bg);
  color: var(--info);
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 10px;
}
.card {
  display: block;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 14px;
  color: var(--foreground);
}
a.card:hover {
  border-color: var(--accent);
  text-decoration: none;
}
.card-id {
  display: block;
  font: 500 12px/1.4 var(--font-mono);
  color: var(--accent);
}
.card strong {
  display: block;
}
.card small {
  display: block;
  color: var(--muted-foreground);
  font-size: 13px;
}
.card > :last-child {
  margin-bottom: 0;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
@media (max-width: 720px) {
  .grid-2 {
    grid-template-columns: 1fr;
  }
}

.table {
  overflow-x: auto;
}
table {
  border-collapse: collapse;
  width: 100%;
  font-size: 14px;
}
th,
td {
  text-align: left;
  vertical-align: top;
  padding: 7px 10px;
  border-bottom: 1px solid var(--border);
}
th {
  font-weight: 600;
  font-size: 13px;
  color: var(--muted-foreground);
}
td > :last-child {
  margin-bottom: 0;
}
td .tag {
  white-space: normal;
}
td code {
  overflow-wrap: anywhere;
}

details {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 8px 14px;
}
summary {
  cursor: pointer;
  font-weight: 500;
}
details[open] > summary {
  margin-bottom: 8px;
}

dl.facts {
  display: grid;
  grid-template-columns: max-content minmax(0, 1fr);
  gap: 6px 16px;
  margin: 0 0 14px;
}
dl.facts dt {
  color: var(--muted-foreground);
  font-weight: 500;
}
dl.facts dd {
  margin: 0;
}
@media (max-width: 560px) {
  dl.facts {
    grid-template-columns: minmax(0, 1fr);
    gap: 0;
  }
  dl.facts dd + dt {
    margin-top: 8px;
  }
}

/* one column as wide as the longest line, so every line's tint spans it when scrolled */
pre.diff {
  display: grid;
  grid-template-columns: minmax(max-content, 1fr);
}
pre.diff span {
  white-space: pre;
}
pre.diff .add {
  background: var(--good-bg);
  color: var(--good);
}
pre.diff .del {
  background: var(--bad-bg);
  color: var(--bad);
}

.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  margin: 0 0 14px;
  font-size: 13px;
  color: var(--muted-foreground);
}
.legend > span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.legend svg {
  width: 34px;
  height: 20px;
  flex: none;
}

.swatch {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 3px;
  border: 1px solid var(--muted-foreground);
  background: var(--card);
  vertical-align: 0;
}
.swatch.info {
  background: color-mix(in srgb, var(--blue) 14%, var(--card));
  border-color: var(--blue);
}
.swatch.good {
  background: color-mix(in srgb, var(--green) 14%, var(--card));
  border-color: var(--green);
}
.swatch.warn {
  background: color-mix(in srgb, var(--yellow) 18%, var(--card));
  border-color: var(--yellow);
}
.swatch.bad {
  background: color-mix(in srgb, var(--red) 14%, var(--card));
  border-color: var(--red);
}

/*
 * diagrams: inline svg inside figure.diagram, drawn with these classes so both schemes work
 *   <g class="node [accent|dashed|good|bad|warn]"><rect …/><text …>Label</text><text class="sub" …>detail</text></g>
 *   <path class="edge [back|good|bad|warn]" … marker-end="url(#arrow)"/>
 *   <path class="arrow [back|good|bad|warn]" d="M0 0 L10 5 L0 10 z"/>   inside a <marker>
 *   <text class="edge-label [back|good|bad|warn]" …>label</text>
 *   <rect class="group" …/> and <text class="group-label" …>   a dashed box around nodes
 * for drawings with their own text placement (a data flow, a sequence), classes go on the shapes:
 *   <rect class="box [info|good|warn|bad|accent] [strong] [dashed] [open]"/>   a step, process or entity
 *   <rect class="zone [info|good|warn|bad|accent] [boundary]"/>   a tinted dashed area; boundary strokes it red
 *   <rect class="panel"/>   a quiet solid area behind a group of boxes
 *   <rect class="chip [good|accent]"/> + <text class="chip-text">   a small filled badge or numbered dot
 *   <path class="line"/>  a plain stroke (a data store's rails)   <line class="rule"/>  a faint dashed guide
 *   <rect class="fill"/>   a borderless card-coloured shape: a data store's body, a backdrop
 *   <text class="title|sub|mono|heading [info|good|warn|bad]">   text roles; text-anchor stays an attribute
 *   .edge.dashed   an answer or a nudge, not a main flow
 *   figure.diagram.wide   svg at least 1000px wide, scrolls sideways on a phone
 * an svg may also use currentColor and var(--good|--bad|--warn|--accent) in fill and stroke attributes
 */
figure {
  margin-left: 0;
  margin-right: 0;
}
figure.diagram {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  overflow-x: auto;
  color: var(--foreground);
}
figure.diagram svg {
  display: block;
  width: 100%;
  height: auto;
  min-width: 640px;
  font-family: var(--font-mono);
}
figure.diagram.wide svg {
  min-width: 1000px;
}
figure.diagram text {
  fill: var(--foreground);
}
figcaption {
  color: var(--muted-foreground);
  font-size: 13px;
  margin-top: 8px;
}
.node rect,
.node circle,
.node ellipse,
.node polygon {
  fill: var(--card);
  stroke: var(--muted-foreground);
  stroke-width: 1;
}
.node.accent rect,
.node.accent circle,
.node.accent polygon {
  fill: var(--accent-bg);
  stroke: var(--accent);
  stroke-width: 1.5;
}
.node.dashed rect,
.node.dashed circle,
.node.dashed polygon {
  stroke-dasharray: 5 4;
}
.node.good rect {
  fill: var(--good-bg);
  stroke: var(--good);
}
.node.bad rect {
  fill: var(--bad-bg);
  stroke: var(--bad);
}
.node.warn rect {
  fill: var(--warn-bg);
  stroke: var(--warn);
}
.node text {
  fill: var(--foreground);
  font: 500 14px var(--font-mono);
  text-anchor: middle;
}
.node text.sub {
  fill: var(--muted-foreground);
  font: 400 11px var(--font-mono);
}
.edge {
  fill: none;
  stroke: var(--muted-foreground);
  stroke-width: 1.4;
}
.arrow {
  fill: var(--muted-foreground);
}
.edge-label {
  fill: var(--muted-foreground);
  font: 400 11px var(--font-mono);
  text-anchor: middle;
  paint-order: stroke;
  stroke: var(--card);
  stroke-width: 4px;
  stroke-linejoin: round;
}
.edge.back {
  stroke: var(--accent);
  stroke-dasharray: 5 4;
}
.arrow.back,
.edge-label.back {
  fill: var(--accent);
}
.edge.good {
  stroke: var(--good);
}
.arrow.good,
.edge-label.good {
  fill: var(--good);
}
.edge.bad {
  stroke: var(--bad);
}
.arrow.bad,
.edge-label.bad {
  fill: var(--bad);
}
.edge.warn {
  stroke: var(--warn);
}
.arrow.warn,
.edge-label.warn {
  fill: var(--warn);
}
.group {
  fill: none;
  stroke: var(--muted-foreground);
  stroke-opacity: 0.5;
  stroke-dasharray: 5 3;
}
.group-label {
  fill: var(--muted-foreground);
  font: 500 11px var(--font-mono);
}

/* shapes with their own classes, for drawings that place their own text */

svg .box {
  fill: var(--card);
  stroke: var(--muted-foreground);
  stroke-width: 1.2;
}
svg .box.info {
  fill: color-mix(in srgb, var(--blue) 14%, var(--card));
  stroke: var(--blue);
}
svg .box.good {
  fill: color-mix(in srgb, var(--green) 14%, var(--card));
  stroke: var(--green);
}
svg .box.warn {
  fill: color-mix(in srgb, var(--yellow) 18%, var(--card));
  stroke: var(--yellow);
}
svg .box.bad {
  fill: color-mix(in srgb, var(--red) 14%, var(--card));
  stroke: var(--red);
}
svg .box.accent {
  fill: color-mix(in srgb, var(--orange) 14%, var(--card));
  stroke: var(--orange);
}
svg .box.strong {
  stroke: var(--foreground);
  stroke-width: 1.6;
}
svg .box.dashed,
svg .edge.dashed {
  stroke-dasharray: 5 4;
}
svg .box.open {
  fill: none;
}
svg .zone {
  fill: color-mix(in srgb, var(--muted-foreground) 6%, transparent);
  stroke: var(--muted-foreground);
  stroke-width: 1.5;
  stroke-dasharray: 7 5;
}
svg .zone.info {
  fill: color-mix(in srgb, var(--blue) 7%, transparent);
}
svg .zone.good {
  fill: color-mix(in srgb, var(--green) 7%, transparent);
}
svg .zone.warn {
  fill: color-mix(in srgb, var(--yellow) 9%, transparent);
}
svg .zone.bad {
  fill: color-mix(in srgb, var(--red) 6%, transparent);
}
svg .zone.accent {
  fill: color-mix(in srgb, var(--orange) 7%, transparent);
}
svg .zone.boundary {
  stroke: var(--red);
}
svg .panel {
  fill: color-mix(in srgb, var(--foreground) 4%, transparent);
  stroke: var(--border);
}
svg .chip {
  fill: var(--blue);
}
svg .chip.good {
  fill: var(--green);
}
svg .chip.accent {
  fill: var(--orange);
}
svg text.chip-text {
  fill: var(--background);
  font: 700 10px var(--font-mono);
}
svg .fill {
  fill: var(--card);
  stroke: none;
}
svg .line {
  fill: none;
  stroke: var(--foreground);
  stroke-width: 1.6;
}
svg .rule {
  stroke: var(--border);
  stroke-width: 1.5;
  stroke-dasharray: 3 5;
}
svg text.title {
  fill: var(--foreground);
  font: 600 13px var(--font-mono);
}
svg text.sub {
  fill: var(--muted-foreground);
  font: 400 11px var(--font-mono);
}
svg text.mono {
  fill: var(--muted-foreground);
  font: 400 10.5px var(--font-mono);
}
svg text.heading {
  fill: var(--muted-foreground);
  font: 600 11px var(--font-mono);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
svg text.info {
  fill: var(--info);
}
svg text.good {
  fill: var(--good);
}
svg text.warn {
  fill: var(--warn);
}
svg text.bad {
  fill: var(--bad);
}

/* index */

.index-head h1 {
  font-size: 26px;
}
.index-head p {
  margin: 4px 0 0;
  color: var(--muted-foreground);
  font-size: 13px;
}
.index h2 {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted-foreground);
  margin: 36px 0 6px;
  padding: 0;
  border: 0;
}
.index h2 .count {
  font: 500 12px var(--font-mono);
  letter-spacing: 0;
}
.rows {
  list-style: none;
  padding: 0;
  margin: 0;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.rows li {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr) auto;
  gap: 12px;
  align-items: baseline;
  padding: 9px 14px;
  margin: 0;
}
.rows li + li {
  border-top: 1px solid var(--border);
}
.rows .id {
  font: 500 12px var(--font-mono);
  color: var(--muted-foreground);
}
.rows .meta {
  font-size: 12px;
  color: var(--muted-foreground);
  white-space: nowrap;
}
.rows .title.superseded a {
  color: var(--muted-foreground);
}
.rows.plain li {
  grid-template-columns: minmax(0, 1fr);
}
.empty {
  color: var(--muted-foreground);
  font-size: 13px;
  margin: 0;
}
@media (max-width: 560px) {
  .rows li {
    grid-template-columns: 44px minmax(0, 1fr);
  }
  .rows .meta {
    grid-column: 2;
  }
}

/* a page rendered from markdown */

.md-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 16px;
  font-size: 13px;
  color: var(--muted-foreground);
  margin: 12px 0 0;
}
.md-meta dt {
  display: inline;
  font-weight: 500;
}
.md-meta dd {
  display: inline;
  margin: 0 0 0 4px;
}
.md-meta div {
  min-width: 0;
}
.files {
  font-size: 13px;
  color: var(--muted-foreground);
  margin-top: 32px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

/* serve's hub: one row per project */

.rows.hub li {
  grid-template-columns: minmax(0, 1fr) auto;
}
@media (max-width: 560px) {
  .rows.hub li {
    grid-template-columns: minmax(0, 1fr);
  }
  .rows.hub .meta {
    grid-column: 1;
  }
}

/* serve's search */

form.search,
input.filter {
  margin: 24px 0 0;
}
form.search input,
input.filter {
  width: 100%;
  font: inherit;
  color: var(--foreground);
  background: var(--card);
  border: 1px solid var(--input);
  border-radius: var(--radius);
  padding: 9px 14px;
}
form.search input:focus,
input.filter:focus {
  outline: 2px solid var(--blue);
  outline-offset: 1px;
}
.rows.results li {
  grid-template-columns: 52px minmax(0, 1fr);
}
.rows.results .meta {
  display: none;
}
.snippet {
  display: block;
  font-size: 13px;
  color: var(--muted-foreground);
  margin-top: 2px;
}
mark {
  background: var(--warn-bg);
  color: inherit;
  border-radius: 3px;
  padding: 0 2px;
}