/**
 * How does the shared 2layers grammar organize the portfolio surface?
 */

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

html {
  min-width: 20rem;
  background: var(--color-ground);
  color: var(--color-paper-bright);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.35;
  text-rendering: geometricPrecision;
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  margin: 0;
}

button,
input {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

a {
  color: inherit;
}

button:focus-visible,
a:focus-visible,
input:focus-visible {
  outline: var(--focus-width) solid var(--color-cobalt);
  outline-offset: 0.25rem;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.65rem 0.85rem;
  background: var(--color-paper-bright);
  color: var(--color-ink);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-decoration: none;
  text-transform: uppercase;
  transform: translateY(-200%);
  transition: transform var(--motion-fast) ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.eyebrow,
.site-nav,
.hero-interface,
.hero-primary-link,
.work-number,
.work-meta,
.capability-list,
.work-status,
.site-footer,
.noscript-message {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.eyebrow {
  margin: 0;
}

.site-header {
  position: absolute;
  z-index: 30;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  padding: 0 var(--edge);
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: var(--rule) solid var(--color-rule-dark);
}

.brand-lockup {
  width: max-content;
  display: grid;
  grid-template-columns: auto 2.5rem auto;
  gap: 0.55rem;
  align-items: center;
  color: inherit;
  font-size: 1.05rem;
  font-weight: 650;
  letter-spacing: -0.04em;
  text-decoration: none;
}

.brand-rule {
  height: var(--rule);
  background: currentColor;
}

.site-nav {
  display: flex;
  gap: clamp(1rem, 3vw, 2.5rem);
}

.site-nav a {
  color: var(--color-quiet);
  text-decoration: none;
  transition: color var(--motion-fast) ease;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--color-paper-bright);
}

.hero {
  position: relative;
  padding: calc(var(--header-height) + var(--edge)) var(--edge) var(--edge);
  display: grid;
  grid-template-rows: auto auto;
  gap: clamp(var(--space-4), 4vw, var(--space-6));
  overflow: clip;
  background: var(--color-ground);
}

.hero-visual {
  position: relative;
  height: clamp(20rem, 48svh, 36rem);
  overflow: hidden;
  isolation: isolate;
}

.hero-stage,
.hero-visual-layer {
  position: absolute;
  inset: 0;
}

.hero-stage {
  z-index: 0;
  overflow: hidden;
  cursor: crosshair;
}

.hero-visual-layer {
  opacity: 1;
  will-change: opacity;
}

.study-canvas {
  position: absolute;
  inset: 0;
  display: block;
  touch-action: none;
}

.hero-content {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 1rem;
  align-items: end;
  padding-bottom: clamp(var(--space-4), 4vh, var(--space-6));
}

.hero-copy {
  grid-column: 1 / span 9;
}

.hero-copy .eyebrow {
  margin-bottom: var(--space-4);
  color: var(--color-quiet);
}

.hero-copy h1 {
  max-width: 11em;
  margin: 0;
  font-size: clamp(3.3rem, 7.3vw, 8.5rem);
  font-weight: 510;
  letter-spacing: -0.074em;
  line-height: 0.9;
}

.hero-description {
  width: min(31rem, 52%);
  margin: var(--space-4) 4% 0 auto;
  color: var(--color-quiet);
  font-size: clamp(0.95rem, 1.35vw, 1.25rem);
  line-height: 1.48;
}

.hero-interface {
  position: absolute;
  z-index: 2;
  right: var(--space-2);
  bottom: var(--space-2);
  color: var(--color-quiet);
}

.hero-pause {
  padding: 0;
  border: 0;
  background: transparent;
  color: inherit;
  cursor: pointer;
  font: inherit;
  letter-spacing: inherit;
  text-transform: inherit;
}

.hero-pause:hover {
  color: var(--color-paper-bright);
  text-decoration: underline;
  text-underline-offset: 0.3rem;
}

.hero-primary-link {
  grid-column: 10 / -1;
  padding-top: 0.8rem;
  display: flex;
  justify-content: space-between;
  border-top: var(--rule) solid var(--color-paper-bright);
  color: var(--color-paper-bright);
  text-decoration: none;
}

.hero-primary-link span:last-child {
  transition: transform var(--motion-fast) ease;
}

.hero-primary-link:hover span:last-child,
.hero-primary-link:focus-visible span:last-child {
  transform: translateY(0.2rem);
}

.hero-error {
  position: absolute;
  z-index: 3;
  right: var(--space-3);
  bottom: calc(var(--space-6) + var(--space-3));
  max-width: 24rem;
  margin: 0;
  padding: var(--space-3);
  background: var(--color-vermilion);
  color: var(--color-ink);
  font-family: var(--font-mono);
  font-size: 0.72rem;
}

.work-section {
  padding: clamp(6rem, 12vw, 12rem) var(--edge);
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 1rem;
  background: var(--color-paper);
  color: var(--color-ink);
}

.section-heading {
  grid-column: 1 / span 4;
}

.section-heading .eyebrow {
  color: var(--color-graphite);
}

.section-heading h2 {
  max-width: 7em;
  margin: var(--space-4) 0 0;
  font-size: clamp(2.8rem, 5.2vw, 6rem);
  font-weight: 520;
  letter-spacing: -0.065em;
  line-height: 0.92;
}

.section-heading > p:last-child {
  max-width: 24rem;
  margin: var(--space-5) 0 0;
  color: var(--color-graphite);
  line-height: 1.5;
}

.work-content {
  grid-column: 6 / -1;
}

.professional-work {
  padding: var(--space-4) 0 var(--space-6);
  border-top: var(--rule) solid var(--color-ink);
  border-bottom: var(--rule) solid var(--color-ink);
}

.work-meta {
  display: flex;
  justify-content: space-between;
  gap: var(--space-3);
  color: var(--color-graphite);
}

.professional-work h3 {
  max-width: 10em;
  margin: var(--space-5) 0 0;
  font-size: clamp(2rem, 3.4vw, 4rem);
  font-weight: 520;
  letter-spacing: -0.055em;
  line-height: 0.96;
}

.professional-work > p {
  max-width: 42rem;
  margin: var(--space-5) 0 0;
  color: var(--color-copy);
  line-height: 1.58;
}

.capability-list {
  margin: var(--space-5) 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  list-style: none;
}

.capability-list li {
  padding: 0.55rem 0.7rem;
  border: var(--rule) solid var(--color-rule-light);
}

.text-link {
  width: max-content;
  margin-top: var(--space-5);
  display: flex;
  gap: var(--space-2);
  align-items: center;
  color: var(--color-ink);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-decoration: none;
  text-transform: uppercase;
}

.text-link span {
  transition: transform var(--motion-fast) ease;
}

.text-link:hover span,
.text-link:focus-visible span {
  transform: translate(0.2rem, -0.2rem);
}

.independent-work {
  margin-top: var(--space-7);
}

.independent-work > .work-meta {
  margin-bottom: var(--space-3);
}

.work-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-bottom: var(--rule) solid var(--color-ink);
}

.work-list li {
  border-top: var(--rule) solid var(--color-ink);
}

.work-list a {
  position: relative;
  min-height: 7.5rem;
  padding: var(--space-3) 0;
  display: grid;
  grid-template-columns: 3rem minmax(7rem, 1fr) minmax(12rem, 1.5fr) auto;
  gap: var(--space-3);
  align-items: center;
  color: var(--color-ink);
  text-decoration: none;
  overflow: hidden;
}

.work-list a::before {
  position: absolute;
  inset: 0;
  background: color-mix(in srgb, var(--color-cobalt) 10%, transparent);
  content: "";
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--motion-medium) var(--ease-system);
}

.work-list a > span {
  position: relative;
  transition: transform var(--motion-medium) var(--ease-system);
}

.work-list a:hover::before,
.work-list a:focus-visible::before {
  transform: scaleX(1);
}

.work-list a:hover > span:not(.work-status),
.work-list a:focus-visible > span:not(.work-status) {
  transform: translateX(var(--space-2));
}

.work-list a:hover > .work-status,
.work-list a:focus-visible > .work-status {
  transform: translateX(calc(var(--space-2) * -1));
}

.work-number {
  color: var(--color-graphite);
}

.work-name {
  font-size: clamp(1.35rem, 2.2vw, 2.25rem);
  font-weight: 560;
  letter-spacing: -0.045em;
}

.work-description {
  color: var(--color-graphite);
  font-size: 0.9rem;
}

.work-status {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-graphite);
}

.work-status span {
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background: currentColor;
}

.work-status.is-live span {
  background: var(--color-mint);
  box-shadow: 0 0 0.5rem color-mix(in srgb, var(--color-mint) 55%, transparent);
}

.code-section {
  padding: clamp(6rem, 12vw, 12rem) var(--edge);
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 1rem;
  background: var(--color-ground);
}

.code-heading {
  grid-column: 1 / span 4;
}

.code-heading > .eyebrow {
  color: var(--color-quiet);
}

.code-heading h2 {
  max-width: 7em;
  margin: var(--space-4) 0 0;
  font-size: clamp(2.8rem, 5.2vw, 6rem);
  font-weight: 520;
  letter-spacing: -0.065em;
  line-height: 0.92;
}

.code-heading > p:last-child {
  max-width: 24rem;
  margin: var(--space-5) 0 0;
  color: var(--color-quiet);
  line-height: 1.5;
}

.code-grid {
  grid-column: 6 / -1;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  list-style: none;
  border-top: var(--rule) solid var(--color-rule-dark);
  border-left: var(--rule) solid var(--color-rule-dark);
}

.code-grid li {
  min-width: 0;
}

.code-grid a {
  position: relative;
  min-height: 17rem;
  padding: var(--space-4);
  display: block;
  border-right: var(--rule) solid var(--color-rule-dark);
  border-bottom: var(--rule) solid var(--color-rule-dark);
  text-decoration: none;
  transition: background-color var(--motion-medium) var(--ease-system);
}

.code-grid a:hover,
.code-grid a:focus-visible {
  background: var(--color-surface);
}

.code-grid a > span,
.practice-notes article > span {
  color: var(--color-quiet);
  font-family: var(--font-mono);
  font-size: 0.66rem;
  font-style: normal;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.code-grid h3 {
  margin: var(--space-6) 0 0;
  font-size: clamp(1.65rem, 2.5vw, 2.8rem);
  font-weight: 540;
  letter-spacing: -0.05em;
}

.code-grid p {
  max-width: 26rem;
  margin: var(--space-3) 0 0;
  color: var(--color-quiet);
  font-size: 0.86rem;
  line-height: 1.5;
}

.code-grid i {
  position: absolute;
  right: var(--space-4);
  bottom: var(--space-4);
  font-style: normal;
  transition: transform var(--motion-fast) ease;
}

.code-grid a:hover i,
.code-grid a:focus-visible i {
  transform: translate(0.2rem, -0.2rem);
}

.code-profile-link {
  grid-column: 6 / -1;
  margin-top: var(--space-5);
  padding-top: var(--space-3);
  display: flex;
  justify-content: space-between;
  border-top: var(--rule) solid var(--color-rule-dark);
  color: var(--color-quiet);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-decoration: none;
  text-transform: uppercase;
}

.code-profile-link span:last-child {
  transition: transform var(--motion-fast) ease;
}

.code-profile-link:hover,
.code-profile-link:focus-visible {
  color: var(--color-paper-bright);
}

.code-profile-link:hover span:last-child,
.code-profile-link:focus-visible span:last-child {
  transform: translateX(0.35rem);
}

.about-section {
  padding: clamp(6rem, 12vw, 12rem) var(--edge);
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 1rem;
  background: var(--color-paper-bright);
  color: var(--color-ink);
}

.about-section > .eyebrow {
  grid-column: 1 / span 3;
  color: var(--color-graphite);
}

.about-copy {
  grid-column: 4 / span 5;
}

.about-copy h2 {
  margin: 0;
  font-size: clamp(3rem, 5.8vw, 6.8rem);
  font-weight: 520;
  letter-spacing: -0.07em;
  line-height: 0.9;
}

.about-copy p {
  max-width: 40rem;
  margin: var(--space-5) 0 0;
  color: var(--color-copy);
  font-size: clamp(1rem, 1.2vw, 1.2rem);
  line-height: 1.58;
}

.practice-notes {
  grid-column: 10 / -1;
}

.practice-notes article {
  padding: var(--space-3) 0 var(--space-5);
  border-top: var(--rule) solid var(--color-rule-light);
}

.practice-notes article:last-child {
  border-bottom: var(--rule) solid var(--color-rule-light);
}

.practice-notes h3 {
  margin: var(--space-5) 0 0;
  font-size: 1.4rem;
  font-weight: 550;
  letter-spacing: -0.035em;
}

.practice-notes p {
  margin: var(--space-3) 0 0;
  color: var(--color-graphite);
  font-size: 0.88rem;
  line-height: 1.5;
}

.studies-callout {
  padding: clamp(4rem, 7vw, 7rem) var(--edge);
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 1rem;
  background: var(--color-cobalt);
  color: var(--color-ink);
}

.studies-callout > .eyebrow {
  grid-column: 1 / span 2;
}

.studies-callout h2 {
  grid-column: 3 / span 6;
  max-width: 9em;
  margin: 0;
  font-size: clamp(2.5rem, 4.5vw, 5.2rem);
  font-weight: 520;
  letter-spacing: -0.065em;
  line-height: 0.92;
}

.studies-callout > p {
  grid-column: 9 / -1;
  align-self: end;
  margin: 0;
  line-height: 1.48;
}

.studies-callout > a {
  grid-column: 3 / -1;
  margin-top: var(--space-5);
  padding-top: var(--space-3);
  display: flex;
  justify-content: space-between;
  border-top: var(--rule) solid var(--color-ink);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-decoration: none;
  text-transform: uppercase;
}

.studies-callout > a span:last-child {
  font-size: 1rem;
  transition: transform var(--motion-fast) ease;
}

.studies-callout > a:hover span:last-child,
.studies-callout > a:focus-visible span:last-child {
  transform: translateX(0.35rem);
}

.site-footer {
  min-height: 9rem;
  padding: var(--space-4) var(--edge);
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: end;
  gap: 1rem;
  background: var(--color-ground);
  color: var(--color-quiet);
}

.site-footer span:nth-child(2) {
  text-align: center;
}

.site-footer a {
  justify-self: end;
  text-decoration: none;
}

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

.noscript-message {
  position: fixed;
  z-index: 80;
  right: 1rem;
  bottom: 1rem;
  max-width: 30rem;
  margin: 0;
  padding: 1rem;
  background: var(--color-vermilion);
  color: var(--color-ink);
}

@media (max-width: 900px) {
  .hero-copy {
    grid-column: 1 / -1;
  }

  .hero-description {
    width: min(30rem, 70%);
    margin-left: 20%;
  }

  .hero-primary-link {
    grid-column: 9 / -1;
  }

  .section-heading,
  .code-heading {
    grid-column: 1 / span 5;
  }

  .work-content,
  .code-grid,
  .code-profile-link {
    grid-column: 6 / -1;
  }

  .code-grid {
    grid-template-columns: 1fr;
  }

  .work-list a {
    grid-template-columns: 2.5rem 1fr auto;
  }

  .work-number,
  .work-name,
  .work-status {
    grid-row: 1;
  }

  .work-number {
    grid-column: 1;
  }

  .work-name {
    grid-column: 2;
  }

  .work-status {
    grid-column: 3;
  }

  .work-description {
    grid-column: 2 / -1;
    grid-row: 2;
  }

  .about-copy {
    grid-column: 4 / -1;
  }

  .practice-notes {
    grid-column: 4 / -1;
    margin-top: var(--space-7);
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-5);
  }

  .practice-notes article:last-child {
    border-bottom: 0;
  }

  .studies-callout h2 {
    grid-column: 3 / -1;
  }

  .studies-callout > p,
  .studies-callout > a {
    grid-column: 3 / -1;
  }

  .studies-callout > p {
    max-width: 32rem;
    margin-top: var(--space-4);
  }
}

@media (max-width: 640px) {
  :root {
    --header-height: 4.25rem;
  }

  .site-nav {
    gap: 1rem;
  }

  .site-nav a:nth-child(2) {
    display: none;
  }

  .hero-content {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .hero-visual {
    height: clamp(15rem, 42svh, 22rem);
  }

  .hero-copy {
    grid-column: 1 / -1;
  }

  .hero-copy h1 {
    font-size: clamp(3rem, 14.8vw, 5.3rem);
  }

  .hero-description {
    width: 88%;
    margin: var(--space-5) 0 0 auto;
  }

  .hero-primary-link {
    grid-column: 4 / -1;
  }

  .work-section,
  .code-section,
  .about-section,
  .studies-callout {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .section-heading,
  .work-content,
  .code-heading,
  .code-grid,
  .code-profile-link,
  .about-section > .eyebrow,
  .about-copy,
  .practice-notes,
  .studies-callout > .eyebrow,
  .studies-callout h2,
  .studies-callout > p,
  .studies-callout > a {
    grid-column: 1 / -1;
  }

  .work-content,
  .code-grid {
    margin-top: var(--space-6);
  }

  .work-list a {
    min-height: 8.5rem;
    grid-template-columns: 2.5rem 1fr auto;
  }

  .work-description {
    grid-column: 2 / -1;
  }

  .code-grid a {
    min-height: 14rem;
  }

  .about-copy h2,
  .studies-callout h2 {
    margin-top: var(--space-4);
  }

  .practice-notes {
    margin-top: var(--space-6);
    display: block;
  }

  .practice-notes article:last-child {
    border-bottom: var(--rule) solid var(--color-rule-light);
  }

  .studies-callout > p {
    margin-top: var(--space-5);
  }

  .studies-callout > a {
    margin-top: var(--space-6);
  }

  .site-footer {
    grid-template-columns: 1fr auto;
  }

  .site-footer span:nth-child(2) {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.001ms !important;
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
  }
}