/* Tokens follow the GitHub profile banner (assets/banner-light.svg, banner-dark.svg). */
:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --surface: #f6f8fa;
  --node: #ffffff;
  --ink: #1f2328;
  --muted: #59636e;
  --rule: #d0d7de;
  --accent: #0f766e;
  --accent-tint: rgb(15 118 110 / 0.09);
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans", Helvetica, Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --gutter: clamp(16px, 4vw, 40px);
  --measure: 68ch;
  --radius: 12px;
  --leading: 1.65;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d1117;
    --surface: #0d1117;
    --node: #151b23;
    --ink: #e6edf3;
    --muted: #9198a1;
    --rule: #30363d;
    --accent: #2dd4bf;
    --accent-tint: rgb(45 212 191 / 0.12);
    --leading: 1.72;
  }
}

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-padding-top: 1rem;
}

@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: var(--leading);
  overflow-wrap: break-word;
}

h1,
h2,
h3 {
  line-height: 1.2;
  text-wrap: balance;
}

p,
li,
dd {
  text-wrap: pretty;
}

a {
  color: inherit;
  text-decoration-line: underline;
  text-decoration-color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.22em;
  transition: text-decoration-thickness 120ms cubic-bezier(0.25, 1, 0.5, 1);
}

a:hover {
  text-decoration-thickness: 2px;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 3px;
}

.skip {
  position: absolute;
  left: var(--gutter);
  top: -100px;
  z-index: 10;
  padding: 0.5rem 0.875rem;
  background: var(--ink);
  color: var(--bg);
  font-family: var(--mono);
  font-size: 0.875rem;
  border-radius: 6px;
  text-decoration: none;
}

.skip:focus {
  top: 12px;
}

.wrap {
  max-width: 70rem;
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* Header */

.site-head {
  border-bottom: 1px solid var(--rule);
}

.site-head .wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem 1.5rem;
  padding-block: 1.125rem;
}

.brand {
  font-family: var(--mono);
  font-size: 0.9375rem;
  font-weight: 600;
  text-decoration: none;
}

.site-nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.25rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-nav a {
  font-family: var(--mono);
  font-size: 0.875rem;
  color: var(--muted);
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-color: var(--accent);
}

/* Hero, drawn after the banner card */

.hero {
  display: grid;
  gap: 2.5rem;
  align-items: center;
  margin-block: clamp(24px, 4vw, 48px) 0;
  padding: clamp(24px, 5vw, 56px);
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
}

@media (min-width: 62rem) {
  .hero {
    grid-template-columns: minmax(0, 1fr) minmax(0, 440px);
  }
}

.kicker {
  margin: 0 0 0.875rem;
  font-family: var(--mono);
  font-size: 0.8125rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
}

.hero h1 {
  margin: 0;
  font-size: clamp(2.5rem, 1.75rem + 3.5vw, 4rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.05;
}

.tagline {
  margin: 0.875rem 0 0;
  max-width: 34ch;
  font-size: clamp(1.125rem, 1rem + 0.6vw, 1.375rem);
  line-height: 1.45;
  color: var(--muted);
}

.stack {
  margin: 1.25rem 0 0;
  font-family: var(--mono);
  font-size: 0.875rem;
  color: var(--muted);
}

.signal {
  margin: 0;
  width: 100%;
  max-width: 440px;
}

.signal svg {
  display: block;
  width: 100%;
  height: auto;
  overflow: visible;
}

.signal .wire {
  stroke: var(--rule);
  stroke-width: 2;
  stroke-dasharray: 4 6;
}

.signal .node {
  fill: var(--surface);
  stroke: var(--rule);
  stroke-width: 1.5;
}

.signal .node-key {
  fill: var(--node);
  stroke: var(--accent);
  stroke-width: 2;
}

.signal text {
  font-family: var(--mono);
  text-anchor: middle;
}

.signal .label {
  font-size: 15px;
  fill: var(--ink);
}

.signal .label-key {
  fill: var(--accent);
}

.signal .sub {
  font-size: 13px;
  fill: var(--muted);
}

.signal .packet {
  fill: var(--accent);
}

@media (prefers-reduced-motion: no-preference) {
  .signal .packet {
    animation: travel 4.8s linear infinite;
  }
}

@media (prefers-reduced-motion: reduce) {
  .signal .packet {
    opacity: 0;
  }
}

@keyframes travel {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(436px);
  }
}

/* Sections: heading in a narrow column, text at a readable measure */

.section {
  padding-block: clamp(44px, 7vw, 88px);
  border-top: 1px solid var(--rule);
}

.hero + .section {
  border-top: 0;
}

.section > h2,
.section > .section-body {
  min-width: 0;
}

.section > h2 {
  margin: 0 0 1.25rem;
  font-size: 1.25rem;
  font-weight: 650;
}

@media (min-width: 56rem) {
  .section {
    display: grid;
    grid-template-columns: 13rem minmax(0, 1fr);
    column-gap: 3rem;
  }

  .section > h2 {
    margin: 0;
    padding-top: 0.15rem;
  }
}

.section-body {
  max-width: var(--measure);
}

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

.section-body > :last-child {
  margin-bottom: 0;
}

.section-body p {
  margin: 0 0 1.125rem;
}

/* Project and case study lists */

.entries {
  margin: 0;
  padding: 0;
  list-style: none;
}

.entries > li {
  padding-block: 1.25rem;
  border-bottom: 1px solid var(--rule);
}

.entries > li:first-child {
  padding-top: 0;
}

.entries > li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.entries h3 {
  margin: 0;
  font-size: 1.0625rem;
  font-weight: 650;
}

.entries .repo {
  font-family: var(--mono);
  color: var(--accent);
}

.entries p {
  margin: 0.375rem 0 0;
}

.meta {
  font-family: var(--mono);
  font-size: 0.8125rem;
  color: var(--muted);
}

.entries .meta {
  margin-top: 0.5rem;
}

.status {
  display: inline-block;
  margin-left: 0.5rem;
  padding: 0 0.5rem;
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 400;
  line-height: 1.6;
  color: var(--muted);
  border: 1px solid var(--rule);
  border-radius: 999px;
  vertical-align: 0.1em;
}

.contact {
  display: grid;
  grid-template-columns: max-content minmax(0, 1fr);
  gap: 0.5rem 1.5rem;
  margin: 0;
}

.contact dt {
  font-family: var(--mono);
  font-size: 0.8125rem;
  color: var(--muted);
  padding-top: 0.2rem;
}

.contact dd {
  margin: 0;
}

/* Footer */

.site-foot {
  border-top: 1px solid var(--rule);
}

.site-foot .wrap {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem 1.5rem;
  padding-block: 1.75rem 2.5rem;
  font-family: var(--mono);
  font-size: 0.8125rem;
  color: var(--muted);
}

.site-foot p {
  margin: 0;
}

/* Case study pages */

.case-head {
  padding-block: clamp(36px, 6vw, 72px) clamp(28px, 4vw, 44px);
}

.case-head h1 {
  margin: 0;
  max-width: 24ch;
  font-size: clamp(2rem, 1.5rem + 2.4vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.015em;
}

.dek {
  margin: 1rem 0 0;
  max-width: 60ch;
  font-size: clamp(1.0625rem, 1rem + 0.4vw, 1.25rem);
  line-height: 1.5;
  color: var(--muted);
}

.facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(12rem, 1fr));
  gap: 1rem 2rem;
  margin: 2rem 0 0;
  padding-block: 1.125rem;
  border-block: 1px solid var(--rule);
}

.facts div {
  min-width: 0;
}

.facts dt {
  font-family: var(--mono);
  font-size: 0.8125rem;
  color: var(--muted);
}

.facts dd {
  margin: 0.125rem 0 0;
  font-size: 0.9375rem;
  line-height: 1.5;
}

.case .section-body h3 {
  margin: 2rem 0 0.5rem;
  font-size: 1.0625rem;
  font-weight: 650;
}

.case .section-body h3:first-child {
  margin-top: 0;
}

.case .section-body ul {
  margin: 0 0 1.125rem;
  padding-left: 1.25rem;
}

.case .section-body li {
  margin-bottom: 0.625rem;
}

.case .section-body li::marker {
  color: var(--accent);
}

.num {
  font-variant-numeric: tabular-nums;
}

/* Figures inside case studies */

.figure {
  margin: 1.75rem 0;
}

.figure figcaption {
  margin-bottom: 0.75rem;
  font-family: var(--mono);
  font-size: 0.8125rem;
  color: var(--muted);
}

.data {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9375rem;
  line-height: 1.5;
}

.data th,
.data td {
  padding: 0.625rem 0.75rem 0.625rem 0;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--rule);
}

.data thead th {
  font-family: var(--mono);
  font-size: 0.8125rem;
  font-weight: 400;
  color: var(--muted);
  border-bottom-color: var(--ink);
}

.data tbody th {
  font-weight: 600;
}

.data tfoot td,
.data tfoot th {
  font-weight: 650;
  border-bottom: 0;
}

.data .r {
  text-align: right;
  padding-right: 1rem;
  font-variant-numeric: tabular-nums;
}

.points {
  display: inline-block;
  padding: 0.0625rem 0.5rem;
  font-family: var(--mono);
  font-size: 0.8125rem;
  white-space: nowrap;
  color: var(--accent);
  background: var(--accent-tint);
  border-radius: 6px;
}

.points.neutral {
  color: var(--muted);
  background: transparent;
  border: 1px solid var(--rule);
}

.carries {
  display: block;
  margin-top: 0.125rem;
  font-weight: 400;
  font-size: 0.875rem;
  color: var(--muted);
}

.bar {
  width: 30%;
  padding-right: 0;
}

.bar span {
  display: block;
  height: 10px;
  margin-top: 0.45rem;
  width: var(--w);
  min-width: 3px;
  background: var(--accent);
  border-radius: 2px;
}

@media (max-width: 40rem) {
  .stacked thead {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip-path: inset(50%);
    white-space: nowrap;
  }

  .stacked tr {
    display: block;
    padding-block: 0.75rem;
    border-bottom: 1px solid var(--rule);
  }

  .stacked th,
  .stacked td {
    display: block;
    padding: 0.125rem 0;
    border: 0;
  }

  .stacked td[data-label]::before {
    content: attr(data-label);
    display: block;
    font-family: var(--mono);
    font-size: 0.75rem;
    color: var(--muted);
  }

  .bar {
    width: 22%;
  }
}

/* Release path: a real sequence, so it carries step numbers */

.flow {
  counter-reset: step;
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.flow li {
  counter-increment: step;
  position: relative;
  padding: 0 0 1.25rem 2.5rem;
  margin: 0;
}

.flow li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0;
  display: grid;
  place-items: center;
  width: 1.75rem;
  height: 1.75rem;
  font-family: var(--mono);
  font-size: 0.8125rem;
  color: var(--accent);
  background: var(--bg);
  border: 1px solid var(--accent);
  border-radius: 50%;
}

.flow li::after {
  content: "";
  position: absolute;
  left: calc(0.875rem - 0.5px);
  top: 1.75rem;
  bottom: 0;
  width: 1px;
  background: var(--rule);
}

.flow li:last-child::after {
  display: none;
}

.flow strong {
  display: block;
  font-weight: 650;
  line-height: 1.75rem;
}

.flow span {
  display: block;
  font-size: 0.9375rem;
  line-height: 1.5;
  color: var(--muted);
}

.case-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem 2rem;
  padding-block: 2rem;
  border-top: 1px solid var(--rule);
  font-family: var(--mono);
  font-size: 0.875rem;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.case .section {
  padding-block: clamp(36px, 5vw, 64px);
}

.case .case-head + .section {
  border-top: 0;
  padding-top: clamp(16px, 3vw, 32px);
}