/*
The site's only stylesheet. It replaces bootstrap.min.css, animate.css, style.css and responsive.css,
and is a port of the `.mk-*` design used on zasper-io.github.io: Inter for text, JetBrains Mono for
code, near-black ink with leaf green as the one accent, dark title bands, and a 720px reading column.
*/

/* --- Fonts ---------------------------------------------------------------- */
/* Arial scaled to Inter's metrics, for the moment before Inter arrives, so headings don't rewrap and
   push the page down when the web font swaps in. */
@font-face {
  font-family: 'Inter Fallback';
  src: local('Arial'), local('ArialMT'), local('Liberation Sans');
  ascent-override: 90.44%;
  descent-override: 22.52%;
  line-gap-override: 0%;
  size-adjust: 107.12%;
}

/* --- Tokens --------------------------------------------------------------- */
:root {
  --a-50: #f3f6f3;
  --a-100: #e1e6e1;
  --a-200: #5fd47e;
  --a-600: #1f8a3b;
  --a-700: #187030;

  --z-fg-accent: var(--a-600);
  --z-accent: var(--a-600);

  --z-bg-panel: #ffffff;
  --z-bg-panel-alt: var(--a-50);
  --z-bg-code: #f0f3f0;
  --z-bg-dark: #0f120f;

  --z-border: var(--a-100);
  --z-border-subtle: #edf0ed;

  --z-fg-default: #121512;
  --z-fg-muted: #586058;
  --z-fg-subtle: #6b726b;

  --z-shadow-panel: 0 3px 20px #0000001c;

  --z-ui-font-family:
    'Inter', 'Inter Fallback', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
  --z-mono-font-family:
    'JetBrains Mono', ui-monospace, 'SF Mono', SFMono-Regular, Menlo, Consolas, 'Liberation Mono', monospace;

  --mk-wrap: 1080px;
  /* The reading measure: about 80 characters of Inter at 16px. */
  --mk-measure: 720px;
  --mk-dark-texture:
    linear-gradient(#ffffff0d 1px, transparent 1px) 0 0 / 56px 56px,
    linear-gradient(90deg, #ffffff0d 1px, transparent 1px) 0 0 / 56px 56px;
}

/* --- Reset ---------------------------------------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scrollbar-color: #b7b7b7 transparent;
}

body {
  margin: 0;
  font-family: var(--z-ui-font-family);
  color: var(--z-fg-default);
  background: var(--z-bg-panel);
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  height: auto;
}

code,
pre,
kbd {
  font-family: var(--z-mono-font-family);
  font-variant-ligatures: none;
}

a {
  color: inherit;
}

/* --- Page shell ------------------------------------------------------------ */
.mk-band {
  padding: 72px 24px;
}

.mk-wrap {
  max-width: var(--mk-wrap);
  margin: 0 auto;
}

.mk-band-dark {
  background: var(--mk-dark-texture), var(--z-bg-dark);
  color: #fff;
}

/* --- Nav ------------------------------------------------------------------ */
.mk-nav {
  display: flex;
  align-items: center;
  gap: 24px;
  max-width: var(--mk-wrap);
  margin: 0 auto;
  padding: 16px 24px;
}

.mk-nav-logo {
  margin-right: auto;
  color: var(--z-fg-default);
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.01em;
  text-decoration: none;
}

.mk-nav-logo span {
  color: var(--z-fg-accent);
}

.mk-nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
}

.mk-nav-links a {
  color: var(--z-fg-muted);
  text-decoration: none;
  font-size: 15px;
}

.mk-nav-links a:hover {
  color: var(--z-fg-default);
}

.mk-nav-links a.is-current {
  color: var(--z-fg-accent);
  font-weight: 500;
}

.mk-nav-github {
  display: inline-flex;
  align-items: center;
}

.mk-nav-github svg {
  width: 20px;
  height: 20px;
}

.mk-nav-toggle {
  display: none;
  border: 0;
  background: transparent;
  padding: 4px;
  cursor: pointer;
  color: var(--z-fg-default);
}

.mk-nav-toggle svg {
  width: 24px;
  height: 24px;
}

@media (max-width: 760px) {
  .mk-nav {
    position: relative;
    flex-wrap: wrap;
  }

  .mk-nav-toggle {
    display: flex;
  }

  .mk-nav-links {
    display: none;
    position: absolute;
    z-index: 10;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    padding: 12px 24px 20px;
    background: var(--z-bg-panel);
    border-bottom: 1px solid var(--z-border);
    box-shadow: var(--z-shadow-panel);
  }

  .mk-nav.is-open .mk-nav-links {
    display: flex;
  }

  .mk-nav-links a {
    padding: 6px 0;
  }
}

/* --- Section titles ------------------------------------------------------- */
.mk-section-title {
  margin: 0 0 12px;
  font-size: 42px;
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.025em;
  text-wrap: balance;
}

.mk-accent {
  color: var(--z-fg-accent);
}

.mk-band-dark .mk-accent {
  color: var(--a-200);
}

.mk-section-sub {
  margin: 0 0 32px;
  font-size: 17px;
  line-height: 1.6;
  color: var(--z-fg-muted);
  max-width: 62ch;
}

.mk-band-dark .mk-section-sub {
  color: #ffffffb3;
}

/* A short mono label above a title, naming what kind of page or post it is. */
.mk-eyebrow {
  display: inline-block;
  margin: 0 0 14px;
  padding: 4px 10px;
  border: 1px solid var(--z-border);
  background: var(--z-bg-panel-alt);
  color: var(--z-fg-accent);
  font-family: var(--z-mono-font-family);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
}

.mk-band-dark .mk-eyebrow {
  border-color: #ffffff40;
  background: #ffffff14;
  color: var(--a-200);
}

a.mk-eyebrow:hover {
  border-color: var(--a-200);
}

/* --- Title band (home, posts, pages) -------------------------------------- */
.mk-band-hero {
  padding-top: 64px;
  padding-bottom: 56px;
}

.mk-wrap.mk-hero {
  max-width: var(--mk-measure);
}

.mk-band-hero h1.mk-section-title {
  font-size: 48px;
}

.mk-band-hero .mk-section-sub {
  margin-bottom: 0;
}

.mk-hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.mk-back {
  display: flex;
  align-items: center;
  gap: 6px;
  width: fit-content;
  margin-bottom: 20px;
  color: #ffffffa6;
  text-decoration: none;
  font-size: 13px;
}

.mk-back:hover {
  color: #fff;
}

.mk-back svg {
  width: 14px;
  height: 14px;
}

.mk-post-meta {
  margin: 0;
  color: #ffffffa6;
  font-size: 14px;
}

@media (max-width: 760px) {
  .mk-band {
    padding: 48px 20px;
  }

  .mk-band-hero {
    padding-top: 40px;
    padding-bottom: 40px;
  }

  .mk-section-title,
  .mk-band-hero h1.mk-section-title {
    font-size: 32px;
  }
}

/* --- Reading column ------------------------------------------------------- */
.mk-main {
  max-width: calc(var(--mk-measure) + 48px);
  margin: 0 auto;
  padding: 40px 24px 72px;
}

/* --- Post list ------------------------------------------------------------ */
.mk-card + .mk-card {
  border-top: 1px solid var(--z-border-subtle);
}

.mk-card-link {
  display: flex;
  gap: 20px;
  padding: 24px 0;
  text-decoration: none;
  color: inherit;
}

.mk-card:first-child .mk-card-link {
  padding-top: 0;
}

.mk-card-thumb {
  flex: 0 0 auto;
  width: 132px;
  height: 74px;
  border: 1px solid var(--z-border);
  object-fit: cover;
  background: var(--z-bg-panel-alt);
}

.mk-card-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 4px;
  color: var(--z-fg-subtle);
  font-size: 13px;
}

.mk-card-kind {
  font-family: var(--z-mono-font-family);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--z-fg-accent);
}

.mk-card h2 {
  margin: 0 0 6px;
  font-size: 20px;
  font-weight: 500;
  line-height: 1.3;
  color: var(--z-fg-default);
}

.mk-card-link:hover h2 {
  color: var(--z-fg-accent);
}

/* The first paragraph, held to three lines so one long opening doesn't make its card twice as tall. */
.mk-card p {
  margin: 0;
  color: var(--z-fg-muted);
  font-size: 15px;
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.mk-empty {
  color: var(--z-fg-muted);
}

/* On a phone the list is text only: full-width thumbnails turned it into a column of the same three
   pictures, and beside the text they leave too narrow a column for the titles. */
@media (max-width: 600px) {
  .mk-card-thumb {
    display: none;
  }
}

/* --- Search box ----------------------------------------------------------- */
.mk-search {
  display: flex;
  max-width: 520px;
  margin-top: 24px;
  border: 1px solid #ffffff40;
  background: #ffffff14;
}

.mk-search input {
  flex: 1;
  min-width: 0;
  padding: 12px 14px;
  border: 0;
  background: transparent;
  color: #fff;
  font: inherit;
  font-size: 16px;
  outline: none;
}

.mk-search input::placeholder {
  color: #ffffff80;
}

.mk-search:focus-within {
  border-color: var(--a-200);
}

.mk-search button {
  padding: 0 18px;
  border: 0;
  background: var(--z-accent);
  color: #fff;
  font: inherit;
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
}

.mk-search button:hover {
  background: var(--a-700);
}

/* --- Post and page body --------------------------------------------------- */
.mk-banner {
  display: block;
  width: 100%;
  margin: 0 0 32px;
  border: 1px solid var(--z-border);
}

.mk-body {
  min-width: 0;
  font-size: 16px;
  line-height: 1.7;
  color: var(--z-fg-default);
  overflow-wrap: break-word;
}

.mk-body > :first-child {
  margin-top: 0;
}

.mk-body h1 {
  margin: 48px 0 12px;
  font-size: 30px;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.mk-body h2 {
  margin: 44px 0 12px;
  font-size: 26px;
  font-weight: 600;
  letter-spacing: -0.015em;
  line-height: 1.3;
}

.mk-body h3 {
  margin: 32px 0 10px;
  font-size: 20px;
  font-weight: 600;
  line-height: 1.35;
}

.mk-body h4,
.mk-body h5,
.mk-body h6 {
  margin: 24px 0 8px;
  font-size: 17px;
  font-weight: 600;
}

.mk-body p {
  margin: 0 0 18px;
}

.mk-body ul,
.mk-body ol {
  margin: 0 0 18px;
  padding-left: 22px;
}

.mk-body li + li {
  margin-top: 4px;
}

.mk-body a {
  color: var(--z-fg-accent);
  text-underline-offset: 2px;
}

.mk-body a:hover {
  color: var(--a-700);
}

.mk-body img {
  border: 1px solid var(--z-border);
  margin: 8px 0 20px;
}

.mk-body blockquote {
  margin: 0 0 18px;
  padding: 2px 0 2px 16px;
  border-left: 3px solid var(--z-border);
  color: var(--z-fg-muted);
}

.mk-body hr {
  margin: 40px 0;
  border: 0;
  border-top: 1px solid var(--z-border);
}

.mk-body code {
  padding: 1px 5px;
  background: var(--z-bg-code);
  font-size: 0.88em;
}

/* Inline code only: a long unbroken token in prose would otherwise push the page wider than a phone. */
.mk-body :not(pre) > code {
  overflow-wrap: anywhere;
}

.mk-body pre {
  margin: 0 0 20px;
  padding: 14px 16px;
  border: 1px solid var(--z-border);
  background: var(--z-bg-code);
  overflow-x: auto;
  font-size: 13.5px;
  line-height: 1.6;
}

.mk-body pre code {
  padding: 0;
  background: none;
  font-size: inherit;
}

/* Rouge wraps each fenced block in div.highlighter-rouge > div.highlight > pre.highlight. */
.mk-body .highlighter-rouge,
.mk-body figure.highlight {
  margin: 0 0 20px;
}

.mk-body .highlight pre {
  margin: 0;
}

.mk-table-scroll {
  overflow-x: auto;
  margin: 0 0 20px;
}

.mk-body table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
}

.mk-body th {
  padding: 0 12px 8px 0;
  border-bottom: 1px solid var(--z-border);
  color: var(--z-fg-subtle);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-align: left;
}

.mk-body td {
  padding: 9px 12px 9px 0;
  border-bottom: 1px solid var(--z-border-subtle);
  vertical-align: baseline;
}

/* The benchmark charts in the ArrayFire posts. */
.mk-body .chart {
  margin: 12px 0 24px;
}

/* --- Code: copy button ---------------------------------------------------- */
.mk-code {
  position: relative;
}

.mk-code > pre {
  padding-right: 52px;
}

.mk-code-copy {
  position: absolute;
  top: 8px;
  right: 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  padding: 0;
  border: 1px solid var(--z-border);
  background: var(--z-bg-panel);
  color: var(--z-fg-subtle);
  cursor: pointer;
  opacity: 0.75;
  transition:
    opacity 0.12s ease,
    color 0.12s ease;
}

.mk-code-copy svg {
  width: 15px;
  height: 15px;
}

.mk-code:hover .mk-code-copy,
.mk-code-copy:focus-visible,
.mk-code-copy:hover {
  opacity: 1;
}

.mk-code-copy:hover {
  color: var(--z-fg-default);
}

.mk-code-copy.is-copied {
  color: var(--z-fg-accent);
  border-color: var(--z-fg-accent);
}

@media (prefers-reduced-motion: reduce) {
  .mk-code-copy {
    transition: none;
  }
}

/* --- Code: syntax colours (Rouge) ----------------------------------------- */
/* Four colours on the code background, each at least 4.5:1 against it. */
.highlight .c,
.highlight .c1,
.highlight .cm,
.highlight .cs,
.highlight .cd {
  color: var(--z-fg-subtle);
  font-style: italic;
}

.highlight .cp,
.highlight .cpf {
  color: #6d4c9f;
}

.highlight .k,
.highlight .kc,
.highlight .kd,
.highlight .kn,
.highlight .kp,
.highlight .kr,
.highlight .kt,
.highlight .ow {
  color: var(--a-700);
  font-weight: 500;
}

.highlight .s,
.highlight .s1,
.highlight .s2,
.highlight .sb,
.highlight .sc,
.highlight .sd,
.highlight .se,
.highlight .sh,
.highlight .si,
.highlight .sx,
.highlight .sr,
.highlight .ss,
.highlight .dl {
  color: #9a3d0b;
}

.highlight .m,
.highlight .mi,
.highlight .mf,
.highlight .mh,
.highlight .mo,
.highlight .il,
.highlight .no,
.highlight .bp,
.highlight .vc,
.highlight .vg,
.highlight .vi {
  color: #1c5aa6;
}

.highlight .nc,
.highlight .nf,
.highlight .fm,
.highlight .nn {
  font-weight: 600;
}

.highlight .gd {
  color: #a8261d;
}

.highlight .gi {
  color: var(--a-700);
}

.highlight .err {
  color: inherit;
  background: none;
}

/* --- Pager and tags under a post ------------------------------------------ */
.mk-pager {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-top: 48px;
  padding-top: 20px;
  border-top: 1px solid var(--z-border);
}

.mk-pager a {
  display: flex;
  align-items: center;
  gap: 10px;
  max-width: 48%;
  padding: 10px 14px;
  border: 1px solid var(--z-border);
  color: var(--z-fg-default);
  text-decoration: none;
  font-size: 15px;
  line-height: 1.4;
}

.mk-pager a:hover {
  border-color: var(--z-fg-accent);
  color: var(--z-fg-accent);
}

.mk-pager span {
  display: flex;
  flex-direction: column;
}

.mk-pager em {
  color: var(--z-fg-subtle);
  font-size: 12px;
  font-style: normal;
}

.mk-pager svg {
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
}

.mk-pager-next {
  margin-left: auto;
  justify-content: flex-end;
  text-align: right;
}

@media (max-width: 760px) {
  .mk-pager {
    flex-direction: column;
  }

  .mk-pager a {
    max-width: none;
  }
}

/* --- Footer --------------------------------------------------------------- */
.mk-footer-band {
  /* The nav's 24px side padding sits inside its max-width; here it sits outside, so take it off. */
  --mk-wrap: calc(1080px - 48px);
  padding: 48px 24px 0;
  border-top: 1px solid var(--z-border);
}

.mk-footer {
  display: flex;
  flex-wrap: wrap;
  gap: 32px;
  align-items: flex-start;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--z-border);
  font-size: 14px;
}

.mk-footer-brand {
  max-width: 36ch;
}

.mk-footer-name {
  display: block;
  margin-bottom: 10px;
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.mk-footer-brand p {
  margin: 0;
  color: var(--z-fg-muted);
  line-height: 1.6;
}

.mk-footer-brand p a {
  color: var(--z-fg-accent);
}

.mk-footer-groups {
  display: flex;
  gap: 56px;
  margin-left: auto;
}

.mk-footer-group {
  display: grid;
  align-content: start;
  gap: 8px;
}

.mk-footer-group h6 {
  margin: 0 0 2px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--z-fg-subtle);
}

.mk-footer-group a {
  color: var(--z-fg-muted);
  text-decoration: none;
}

.mk-footer-group a:hover {
  color: var(--z-fg-default);
}

.mk-copyright {
  padding: 20px 24px;
  text-align: center;
  font-size: 13px;
  color: var(--z-fg-subtle);
}

@media (max-width: 760px) {
  .mk-footer-groups {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    margin-left: 0;
    gap: 28px 32px;
  }
}

/* --- 404 ------------------------------------------------------------------ */
.mk-not-found {
  padding: 24px 0 40px;
}