/* holsee — a violet-field theme for an engineer's archive.
   Purple is the ground, not an accent: the whole surface is soaked in it,
   and the one warm colour (amber) is reserved for things you can act on.
   Structure is carried by a monospace metadata rail — dates, tags, years —
   against Bricolage Grotesque display and Literata prose. */

/* --- Faces (self-hosted, variable, latin) ----------------------------- */

@font-face {
  font-family: "Bricolage Grotesque";
  src: url("fonts/bricolage-wght.woff2") format("woff2-variations");
  font-weight: 200 800;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Literata";
  src: url("fonts/literata-wght.woff2") format("woff2-variations");
  font-weight: 200 900;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Literata";
  src: url("fonts/literata-wght-italic.woff2") format("woff2-variations");
  font-weight: 200 900;
  font-style: italic;
  font-display: swap;
}

@font-face {
  font-family: "JetBrains Mono";
  src: url("fonts/jetbrains-wght.woff2") format("woff2-variations");
  font-weight: 100 800;
  font-style: normal;
  font-display: swap;
}

/* --- Tokens ----------------------------------------------------------- */
/* Defaults are the dark rendition: this site is read in the evening, on a
   screen, between an editor and a browser. Light is a real second
   rendition, violet ink on warm paper, not an afterthought. */

:root {
  --color-bg: #150e1f;
  --color-surface: #1d1430;
  --color-well: #100a18;
  --color-fg: #ece6f5;
  --color-muted: #a698c0;
  --color-border: #2f2247;
  --color-accent: #f0b354;
  --color-accent-strong: #ffd08f;
  --color-mark: #b98cff;
  --color-selection: #3d2b63;

  --syn-keyword: #ff9ecb;
  --syn-string: #9ee6c8;
  --syn-comment: #8878a8;
  --syn-function: #f0b354;
  --syn-constant: #c9a4ff;
  --syn-type: #7fd4e8;
  --syn-variable: #ece6f5;
  --syn-punct: #a698c0;

  --font-display: "Bricolage Grotesque", ui-sans-serif, system-ui, sans-serif;
  --font-prose: "Literata", Charter, Georgia, serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", Consolas, monospace;

  --measure: 39rem;
  --wrap: 52rem;

  color-scheme: dark;
}

:root[data-theme="light"] {
  --color-bg: #f8f5fc;
  --color-surface: #efe9f7;
  --color-well: #eae2f4;
  --color-fg: #221833;
  --color-muted: #5d5175;
  --color-border: #ddd1ec;
  --color-accent: #8a4a05;
  --color-accent-strong: #6d3a03;
  --color-mark: #6b3fa8;
  --color-selection: #e2d3f7;

  --syn-keyword: #a3105e;
  --syn-string: #185f45;
  --syn-comment: #6b5f85;
  --syn-function: #8a4a05;
  --syn-constant: #5b32a0;
  --syn-type: #0f5b71;
  --syn-variable: #221833;
  --syn-punct: #5d5175;

  color-scheme: light;
}

/* No prefers-color-scheme override: this site is dark by design, including
   for visitors whose OS prefers light. Light is one click away on the
   toggle, never the default. */

/* --- Base ------------------------------------------------------------- */

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-fg);
  font-family: var(--font-prose);
  font-size: 1.0625rem;
  font-weight: 400;
  line-height: 1.75;
  font-optical-sizing: auto;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

::selection {
  background: var(--color-selection);
  color: var(--color-fg);
}

.wrap {
  width: min(100% - 2.5rem, var(--wrap));
  margin-inline: auto;
}

/* Text holds the reading measure and centres in the column; media —
   photos, process graphs, video, code — may use the full width, because
   on this site the evidence is the point. */
main .wrap > *,
article > * {
  max-width: var(--measure);
  margin-inline: auto;
}

article > pre,
article > .video-embed,
article > .embed-video-container,
article > .table-scroll,
article > figure,
article > p:has(> img:only-child),
article > p:has(> a > img:only-child) {
  max-width: 100%;
}

a {
  color: var(--color-accent);
  text-decoration-color: color-mix(in srgb, var(--color-accent) 40%, transparent);
  text-underline-offset: 0.18em;
  text-decoration-thickness: 1px;
  transition: color 120ms ease, text-decoration-color 120ms ease;
}

a:hover {
  color: var(--color-accent-strong);
  text-decoration-color: currentColor;
}

a:focus-visible {
  outline: 2px solid var(--color-mark);
  outline-offset: 2px;
  border-radius: 2px;
}

/* --- Header ----------------------------------------------------------- */

.site-header {
  border-bottom: 1px solid var(--color-border);
  background: linear-gradient(
    to bottom,
    color-mix(in srgb, var(--color-mark) 7%, var(--color-bg)),
    var(--color-bg)
  );
}

.site-header .wrap {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: 1.15rem 0;
}

.site-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.3rem;
  letter-spacing: -0.035em;
  color: var(--color-fg);
  text-decoration: none;
  flex-shrink: 0;
}

.site-title::before {
  content: "";
  display: inline-block;
  width: 0.5rem;
  height: 0.5rem;
  margin-right: 0.5rem;
  vertical-align: 0.06em;
  border-radius: 50%;
  background: var(--color-mark);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-mark) 18%, transparent);
}

.site-title:hover {
  color: var(--color-mark);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-left: auto;
}

.site-nav a {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  color: var(--color-muted);
  text-decoration: none;
}

.site-nav a:hover {
  color: var(--color-fg);
}

main {
  padding: 3.5rem 0 5rem;
}

/* --- Footer ----------------------------------------------------------- */

.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 1.75rem 0;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--color-muted);
}

.site-footer .wrap {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
}

.site-footer a {
  color: var(--color-muted);
  text-decoration: none;
}

.site-footer a:hover {
  color: var(--color-accent);
}

/* --- Theme toggle ----------------------------------------------------- */

.theme-toggle {
  display: none;
  align-items: center;
  gap: 0.4rem;
  padding: 0.25rem 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-muted);
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  cursor: pointer;
  transition: color 120ms ease, border-color 120ms ease;
}

.theme-toggle[data-ready] {
  display: inline-flex;
}

.theme-toggle:hover {
  color: var(--color-fg);
  border-color: color-mix(in srgb, var(--color-mark) 55%, var(--color-border));
}

.theme-toggle:focus-visible {
  outline: 2px solid var(--color-mark);
  outline-offset: 2px;
}

.theme-toggle svg {
  width: 0.85rem;
  height: 0.85rem;
}

/* --- Headings and prose ----------------------------------------------- */

h1,
h2,
h3,
h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.032em;
  text-wrap: balance;
  color: var(--color-fg);
}

h1 {
  font-size: clamp(2rem, 1.4rem + 2.6vw, 3.1rem);
  margin: 0 0 0.6rem;
}

h2 {
  font-size: 1.6rem;
  margin: 3rem 0 0.9rem;
}

h3 {
  font-size: 1.22rem;
  margin: 2.25rem 0 0.7rem;
}

h4 {
  font-size: 1.05rem;
  margin: 1.9rem 0 0.6rem;
}

p,
ul,
ol {
  margin: 0 0 1.3rem;
}

li {
  margin-bottom: 0.35rem;
}

li::marker {
  color: var(--color-mark);
}

blockquote {
  margin: 2rem 0;
  padding: 0.2rem 0 0.2rem 1.4rem;
  border-left: 1px solid var(--color-mark);
  color: var(--color-muted);
  font-style: italic;
}

blockquote p:last-child {
  margin-bottom: 0;
}

hr {
  margin: 3rem 0;
  border: 0;
  border-top: 1px solid var(--color-border);
}

strong {
  font-weight: 700;
  color: var(--color-fg);
}

/* --- Media: images, video, audio embeds -------------------------------- */
/* Images and embeds may break past the reading measure up to the wrap,
   because a 2015 conference photo or a process graph is the evidence. */

article img {
  display: block;
  max-width: 100%;
  width: auto;
  height: auto;
  margin: 2.25rem auto;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  background: var(--color-surface);
}

article p > img:only-child {
  margin-inline: 0;
}

/* Video: the migration wraps every embed in .video-embed, which nothing
   styled — so every video rendered at the iframe default of 304x154. */
.video-embed,
.embed-video-container {
  position: relative;
  aspect-ratio: 16 / 9;
  margin: 2.25rem 0;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  background: var(--color-well);
}

.video-embed iframe,
.embed-video-container iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

/* Audio embeds keep the height their provider asks for. */
article iframe[src*="mixcloud"],
article iframe[src*="soundcloud"] {
  display: block;
  width: 100%;
  margin: 2rem 0;
  border: 1px solid var(--color-border);
  border-radius: 4px;
}

figure {
  margin: 2.25rem 0;
}

figcaption {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--color-muted);
  margin-top: 0.6rem;
}

/* --- Heading anchors --------------------------------------------------- */

a.anchor {
  float: left;
  margin-left: -1.1em;
  padding-right: 0.35em;
  opacity: 0;
  text-decoration: none;
  transition: opacity 120ms ease;
}

a.anchor::before {
  content: "#";
  color: var(--color-mark);
  font-family: var(--font-mono);
  font-size: 0.8em;
}

h1:hover a.anchor,
h2:hover a.anchor,
h3:hover a.anchor,
h4:hover a.anchor,
a.anchor:focus-visible {
  opacity: 1;
}

/* --- Alerts ------------------------------------------------------------ */

.markdown-alert {
  margin: 2rem 0;
  padding: 1rem 1.25rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 6px;
}

.markdown-alert > p {
  margin-bottom: 0.6rem;
}

.markdown-alert > p:last-child {
  margin-bottom: 0;
}

.markdown-alert-title {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.markdown-alert-note .markdown-alert-title {
  color: var(--syn-type);
}

.markdown-alert-tip .markdown-alert-title {
  color: var(--syn-string);
}

.markdown-alert-important .markdown-alert-title {
  color: var(--color-mark);
}

.markdown-alert-warning .markdown-alert-title {
  color: var(--color-accent);
}

.markdown-alert-caution .markdown-alert-title {
  color: var(--syn-keyword);
}

/* --- Tables ------------------------------------------------------------ */

.table-scroll {
  overflow-x: auto;
  margin: 2rem 0;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-mono);
  font-size: 0.84rem;
}

.table-scroll table {
  margin: 0;
}

th,
td {
  padding: 0.55rem 0.9rem;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

th {
  font-weight: 600;
  color: var(--color-mark);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-size: 0.72rem;
  border-bottom-color: color-mix(in srgb, var(--color-mark) 40%, var(--color-border));
}

/* --- Post header ------------------------------------------------------- */

.post-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 0.85rem;
  margin: 0 0 2.75rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--color-muted);
}

.post-meta time {
  letter-spacing: 0.02em;
}

.post-meta a {
  color: var(--color-mark);
  text-decoration: none;
  padding: 0.1rem 0.5rem;
  border: 1px solid color-mix(in srgb, var(--color-mark) 30%, transparent);
  border-radius: 999px;
  font-size: 0.72rem;
}

.post-meta a::before {
  content: "#";
  opacity: 0.6;
}

.post-meta a:hover {
  color: var(--color-bg);
  background: var(--color-mark);
  border-color: var(--color-mark);
}

article > h1 + .post-meta {
  margin-top: -0.2rem;
}

/* --- The register: post lists ------------------------------------------ */

.post-list {
  list-style: none;
  padding: 0;
  margin: 0 0 2rem;
  max-width: var(--measure);
}

.post-list li {
  display: grid;
  grid-template-columns: 6.1rem 1fr;
  gap: 0 1.1rem;
  align-items: baseline;
  padding: 0.7rem 0;
  border-bottom: 1px solid color-mix(in srgb, var(--color-border) 60%, transparent);
}

.post-list li:hover {
  border-bottom-color: var(--color-mark);
}

.post-list time {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-muted);
  letter-spacing: 0.01em;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.post-list a {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 1.02rem;
  letter-spacing: -0.015em;
  color: var(--color-fg);
  text-decoration: none;
  line-height: 1.35;
}

.post-list a:hover {
  color: var(--color-accent);
}

/* Year rules break the archive into eras. */
.year-rule {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin: 2.75rem 0 0.5rem;
  max-width: var(--measure);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  color: var(--color-mark);
}

.year-rule::after {
  content: "";
  flex: 1;
  height: 1px;
  background: linear-gradient(
    to right,
    color-mix(in srgb, var(--color-mark) 45%, transparent),
    transparent
  );
}

.year-rule:first-child {
  margin-top: 0;
}

@media (max-width: 34rem) {
  .post-list li {
    grid-template-columns: 1fr;
    gap: 0.15rem;
  }
}

/* --- Home -------------------------------------------------------------- */

.page-home .lede {
  font-size: 1.2rem;
  line-height: 1.65;
  color: var(--color-muted);
  margin-bottom: 2.5rem;
  max-width: var(--measure);
}

.page-home h1 {
  font-size: clamp(2.6rem, 1.6rem + 4.4vw, 4.6rem);
  letter-spacing: -0.045em;
  margin-bottom: 1rem;
}

.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin: 3.5rem 0 0.75rem;
  max-width: var(--measure);
}

.section-head h2 {
  margin: 0;
  font-size: 1.05rem;
  letter-spacing: 0.01em;
}

.section-head a {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  text-decoration: none;
}

/* --- Code -------------------------------------------------------------- */

code {
  font-family: var(--font-mono);
  font-feature-settings: "liga" 0;
}

:not(pre) > code {
  font-size: 0.86em;
  padding: 0.12em 0.38em;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  color: var(--color-fg);
  white-space: nowrap;
}

pre {
  margin: 2.25rem 0;
  padding: 1.15rem 1.25rem;
  overflow-x: auto;
  background: var(--color-well);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  font-size: 0.855rem;
  line-height: 1.68;
  tab-size: 2;
}

pre code {
  font-family: var(--font-mono);
  background: none;
  border: 0;
  padding: 0;
  white-space: pre;
  color: var(--syn-variable);
}

pre.lumis {
  color: var(--syn-variable);
}

[class^="l-keyword"],
[class*=" l-keyword"] {
  color: var(--syn-keyword);
}

[class^="l-string"],
[class*=" l-string"],
[class^="l-char"],
[class*=" l-char"] {
  color: var(--syn-string);
}

[class^="l-comment"],
[class*=" l-comment"] {
  color: var(--syn-comment);
  font-style: italic;
}

[class^="l-function"],
[class*=" l-function"] {
  color: var(--syn-function);
}

[class^="l-constant"],
[class*=" l-constant"],
[class^="l-number"],
[class*=" l-number"],
[class^="l-boolean"],
[class*=" l-boolean"] {
  color: var(--syn-constant);
}

[class^="l-type"],
[class*=" l-type"],
[class^="l-class"],
[class*=" l-class"],
[class^="l-tag"],
[class*=" l-tag"],
[class^="l-attribute"],
[class*=" l-attribute"] {
  color: var(--syn-type);
}

[class^="l-variable"],
[class*=" l-variable"] {
  color: var(--syn-variable);
}

[class^="l-punct"],
[class*=" l-punct"],
[class^="l-operator"],
[class*=" l-operator"] {
  color: var(--syn-punct);
}

/* --- Portfolio / story / CV (Cherry's optional views) ------------------- */

.entry-meta {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--color-muted);
}

.entry-meta a {
  color: var(--color-mark);
  text-decoration: none;
}

.entry-meta a:hover {
  color: var(--color-accent);
}

.entry-highlights {
  padding-left: 1.1rem;
}

.entry-highlights li {
  margin-bottom: 0.3rem;
}

.entry-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 0.72rem;
}

.entry-tags a {
  color: var(--color-mark);
  text-decoration: none;
  padding: 0.1rem 0.5rem;
  border: 1px solid color-mix(in srgb, var(--color-mark) 30%, transparent);
  border-radius: 999px;
}

.entry-tags a::before {
  content: "#";
  opacity: 0.6;
}

.entry-tags a:hover {
  color: var(--color-bg);
  background: var(--color-mark);
}

.oss h2,
.story-section h2 {
  font-size: 1.2rem;
}

.oss-list {
  list-style: none;
  padding: 0;
}

.oss-list li {
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--color-border);
}

.oss-role {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-muted);
}

.story-lede {
  font-size: 1.15rem;
  color: var(--color-muted);
}

.story-link {
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.cv-header h1 {
  margin-bottom: 0.3rem;
}

.cv-headline {
  font-size: 1.1rem;
  color: var(--color-muted);
}

.cv-contact {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

.cv-contact a {
  color: var(--color-mark);
  text-decoration: none;
}

.cv-contact a:hover {
  color: var(--color-accent);
}

.cv-updated {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-muted);
}

.cv-section h2 {
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-mark);
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--color-border);
}

.cv-entry {
  margin-bottom: 1.5rem;
}

.cv-entry h3 {
  font-size: 1.02rem;
  margin: 0 0 0.2rem;
}

.cv-skills {
  list-style: none;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
}

.cv-skills li {
  padding: 0.15rem 0.55rem;
  border: 1px solid var(--color-border);
  border-radius: 999px;
}

.cv-skill-years {
  color: var(--color-muted);
}

/* --- Search (Pagefind) -------------------------------------------------- */

.site-search {
  position: relative;
  min-width: 13rem;
}

#search {
  --pagefind-ui-primary: var(--color-accent);
  --pagefind-ui-text: var(--color-fg);
  --pagefind-ui-background: var(--color-surface);
  --pagefind-ui-border: var(--color-border);
  --pagefind-ui-tag: var(--color-surface);
  --pagefind-ui-font: var(--font-mono);
  --pagefind-ui-scale: 0.8;
}

#search .pagefind-ui__drawer:not(.pagefind-ui__hidden) {
  position: absolute;
  top: calc(100% + 0.625rem);
  right: 0;
  z-index: 60;
  width: min(30rem, 88vw);
  max-height: min(65vh, 30rem);
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 0.5rem 1.25rem 1.25rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  box-shadow: 0 18px 44px -12px color-mix(in srgb, black 70%, transparent);
}

#search .pagefind-ui__message {
  font-size: 0.8125rem;
  color: var(--color-muted);
}

#search .pagefind-ui__result {
  border-top: 1px solid var(--color-border);
}

#search .pagefind-ui__result-link {
  font-family: var(--font-display);
}

#search .pagefind-ui__result-excerpt {
  font-family: var(--font-prose);
  font-size: 0.85rem;
  color: var(--color-muted);
}

#search .pagefind-ui__result-excerpt mark {
  background: color-mix(in srgb, var(--color-mark) 30%, transparent);
  color: var(--color-fg);
  padding: 0 0.15em;
  border-radius: 3px;
}

@media (max-width: 44rem) {
  .site-header .wrap {
    flex-wrap: wrap;
  }

  .site-nav {
    flex-wrap: wrap;
  }

  .site-search {
    order: 10;
    flex: 1 1 100%;
    min-width: 0;
  }

  #search .pagefind-ui__drawer:not(.pagefind-ui__hidden) {
    left: 0;
    right: 0;
    width: auto;
  }
}

/* --- Copy buttons (copy-code.js island) -------------------------------- */

.code-copy {
  position: relative;
}

.copy-code {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  z-index: 2;
  padding: 0.15rem 0.55rem;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  line-height: 1.6;
  color: var(--color-muted);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  cursor: pointer;
  opacity: 0.5;
  transition: opacity 120ms ease, color 120ms ease, border-color 120ms ease;
}

.code-copy:hover .copy-code,
[data-copy]:hover .copy-code,
.copy-code:focus-visible {
  opacity: 1;
}

.copy-code:hover,
.copy-code-done {
  color: var(--color-accent);
  border-color: color-mix(in srgb, var(--color-accent) 45%, var(--color-border));
  opacity: 1;
}

@media (hover: none) {
  .copy-code {
    opacity: 1;
  }
}

/* --- Print -------------------------------------------------------------- */

@media print {
  body {
    background: #fff;
    color: #000;
  }

  .site-header,
  .site-footer,
  .theme-toggle,
  .site-search,
  .copy-code {
    display: none;
  }

  main {
    padding: 0;
  }

  a {
    color: #000;
  }

  pre {
    border: 1px solid #999;
    background: #f6f6f6;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}