/* DESIGN.md tokens */
:root {
  color-scheme: light;

  --color-primary: #06c;
  --color-primary-focus: #0071e3;
  --color-primary-on-dark: #2997ff;
  --color-ink: #1d1d1f;
  --color-ink-soft: #333;
  --color-ink-muted: #7a7a7a;
  --color-body-muted: #ccc;
  --color-canvas: #fff;
  --color-parchment: #f5f5f7;
  --color-pearl: #fafafc;
  --color-dark-1: #272729;
  --color-dark-2: #2a2a2c;
  --color-dark-3: #252527;
  --color-black: #000;
  --color-hairline: #e0e0e0;
  --color-divider-soft: #f0f0f0;
  --color-chip: rgb(210, 210, 215, 0.64);
  --radius-sm: 8px;
  --radius-md: 11px;
  --radius-lg: 18px;
  --radius-pill: 9999px;
  --space-xs: 8px;
  --space-sm: 12px;
  --space-md: 17px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-xxl: 48px;
  --space-section: 80px;
  --content-wide: 1440px;
  --content-reading: 980px;
  --font-display:
    system-ui, -apple-system, blinkmacsystemfont, "Segoe UI", sans-serif;
  --font-text:
    system-ui, -apple-system, blinkmacsystemfont, "Segoe UI", sans-serif;
  --product-shadow: rgb(0, 0, 0, 0.14) 0 18px 48px 0;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  overflow-x: hidden;
  color: var(--color-ink);
  background: var(--color-canvas);
  font-family: var(--font-text);
  font-size: 17px;
  line-height: 1.47;
  letter-spacing: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img,
svg,
video {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

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

button {
  font: inherit;
}

:focus-visible {
  outline: 2px solid var(--color-primary-focus);
  outline-offset: 3px;
}

code {
  font-family: SFMono-Regular, consolas, "Liberation Mono", menlo, monospace;
}

/* Apple portfolio/homepage sections */
.global-nav {
  position: sticky;
  top: 0;
  z-index: 40;
  min-height: 44px;
  color: var(--color-canvas);
  background: var(--color-black);
}

.nav-shell {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: var(--space-lg);
  align-items: center;
  width: min(100% - 32px, var(--content-wide));
  min-height: 44px;
  margin: 0 auto;
}

.global-mark,
.footer-brand {
  font-weight: 600;
}

.global-mark,
.global-links a,
.language-button {
  min-height: 32px;
  color: rgb(255, 255, 255, 0.82);
  font-size: 12px;
  line-height: 1;
  letter-spacing: 0;
}

.global-links {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  align-items: center;
  justify-content: center;
  margin: 0;
  padding: 0;
  list-style: none;
}

.global-links a,
.language-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.global-mark {
  display: inline-flex;
  align-items: center;
}

.global-links a:hover,
.global-mark:hover,
.language-button:hover {
  color: var(--color-canvas);
}

.language-control {
  display: inline-flex;
  gap: 2px;
  align-items: center;
  padding: 2px;
  border: 1px solid rgb(255, 255, 255, 0.18);
  border-radius: var(--radius-pill);
}

.language-button {
  min-width: 44px;
  padding: 0 10px;
  border: 0;
  border-radius: var(--radius-pill);
  background: transparent;
  cursor: pointer;
}

.language-button.active {
  color: var(--color-ink);
  background: var(--color-canvas);
  cursor: default;
}

.sub-nav-frosted {
  position: sticky;
  top: 44px;
  z-index: 35;
  min-height: 52px;
  border-bottom: 1px solid rgb(0, 0, 0, 0.08);
  background: rgb(245, 245, 247, 0.82);
  backdrop-filter: saturate(180%) blur(20px);
}

.sub-nav-shell {
  display: flex;
  gap: var(--space-lg);
  align-items: center;
  justify-content: space-between;
  width: min(100% - 32px, var(--content-wide));
  min-height: 52px;
  margin: 0 auto;
}

.sub-nav-title {
  color: var(--color-ink);
  font-size: 21px;
  font-weight: 600;
  line-height: 1.19;
  letter-spacing: 0;
}

.sub-nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  align-items: center;
  justify-content: flex-end;
}

.sub-nav-links a {
  color: var(--color-ink-soft);
  font-size: 14px;
  line-height: 1.29;
  letter-spacing: 0;
}

.sub-nav-links a:hover {
  color: var(--color-primary);
}

.sub-nav-cta,
.button-primary,
.button-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  border-radius: var(--radius-pill);
  line-height: 1;
  white-space: nowrap;
}

.sub-nav-cta,
.button-primary {
  padding: 11px 22px;
  color: var(--color-canvas) !important;
  background: var(--color-primary);
}

.button-secondary {
  padding: 10px 22px;
  border: 1px solid var(--color-primary);
  color: var(--color-primary);
  background: transparent;
}

.sub-nav-cta {
  min-height: 32px;
  padding: 7px 16px;
  font-size: 14px;
}

.button-primary:active,
.button-secondary:active,
.sub-nav-cta:active,
.language-button:active {
  transform: scale(0.95);
}

.product-tile {
  overflow: hidden;
  color: var(--color-ink);
}

.product-tile-light {
  background: var(--color-canvas);
}

.product-tile-parchment {
  background: var(--color-parchment);
}

.product-tile-dark,
.product-tile-dark-2,
.product-tile-dark-3 {
  color: var(--color-canvas);
}

.product-tile-dark {
  background: var(--color-dark-1);
}

.product-tile-dark-2 {
  background: var(--color-dark-2);
}

.product-tile-dark-3 {
  background: var(--color-dark-3);
}

.tile-inner {
  width: min(100% - 48px, var(--content-wide));
  margin: 0 auto;
  padding: var(--space-section) 0;
}

.hero-tile .tile-inner {
  padding-top: 56px;
  padding-bottom: 64px;
}

.hero-grid,
.split-tile {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(360px, 1.08fr);
  gap: clamp(32px, 5vw, 80px);
  align-items: center;
}

.split-tile-reverse {
  grid-template-columns: minmax(360px, 1.08fr) minmax(0, 0.92fr);
}

.tile-copy {
  max-width: 760px;
}

.hero-copy {
  max-width: 700px;
}

.eyebrow,
.project-kicker {
  margin: 0 0 var(--space-sm);
  color: var(--color-ink-muted);
  font-size: 14px;
  font-weight: 600;
  line-height: 1.29;
  letter-spacing: 0;
  text-transform: uppercase;
}

.product-tile-dark .eyebrow,
.product-tile-dark-2 .eyebrow,
.product-tile-dark .project-kicker,
.product-tile-dark-2 .project-kicker {
  color: var(--color-body-muted);
}

.hero-title,
.section-title,
.project-title,
.writing-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0;
}

.hero-title {
  max-width: 720px;
  font-size: clamp(38px, 4.4vw, 60px);
  line-height: 1.07;
}

.section-title {
  font-size: clamp(34px, 3.4vw, 48px);
  line-height: 1.1;
}

.hero-subtitle,
.tile-copy p,
.section-heading p {
  color: var(--color-ink-soft);
  font-size: 21px;
  line-height: 1.35;
}

.hero-subtitle {
  margin: var(--space-lg) 0 0;
}

.tile-copy p,
.section-heading p {
  margin: var(--space-md) 0 0;
}

.product-tile-dark .hero-subtitle,
.product-tile-dark .tile-copy p,
.product-tile-dark .section-heading p,
.product-tile-dark-2 .tile-copy p {
  color: var(--color-body-muted);
}

.cta-row,
.chip-row,
.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.cta-row {
  margin-top: var(--space-xl);
}

.chip-row {
  margin-top: var(--space-lg);
}

.chip-row span,
.tag-row span {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 7px 14px;
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-pill);
  color: var(--color-ink-soft);
  background: var(--color-canvas);
  font-size: 14px;
  line-height: 1.29;
}

.product-tile-dark .tag-row span,
.product-tile-dark-2 .tag-row span {
  border-color: rgb(255, 255, 255, 0.18);
  color: var(--color-canvas);
  background: rgb(255, 255, 255, 0.06);
}

.section-heading {
  max-width: 900px;
  margin-bottom: var(--space-xxl);
}

.centered-heading {
  margin-right: auto;
  margin-left: auto;
  text-align: center;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.project-card,
.work-card,
.writing-item {
  border: 1px solid rgb(0, 0, 0, 0.08);
  background: var(--color-canvas);
}

.project-card {
  display: flex;
  min-width: 0;
  flex-direction: column;
  overflow: hidden;
  border-radius: var(--radius-lg);
}

.project-card-featured {
  grid-row: span 2;
}

.project-content {
  display: flex;
  flex: 1;
  flex-direction: column;
  padding: var(--space-lg);
}

.project-title {
  color: var(--color-ink);
  font-size: 28px;
  line-height: 1.14;
}

.project-content p {
  margin: var(--space-md) 0 0;
  color: var(--color-ink-soft);
  font-size: 17px;
  line-height: 1.47;
  overflow-wrap: anywhere;
}

.project-content strong,
.project-content code {
  color: var(--color-ink);
}

.project-content code {
  padding: 1px 5px;
  border-radius: 5px;
  background: var(--color-parchment);
  font-size: 0.9em;
}

.project-content .tag-row {
  margin-top: var(--space-lg);
}

.project-link,
.project-status {
  margin-top: auto;
  padding-top: var(--space-lg);
  color: var(--color-primary);
  font-weight: 600;
}

.project-link:hover {
  color: var(--color-primary-focus);
}

.project-status {
  color: var(--color-ink-muted);
}

.work-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-sm);
  margin-top: var(--space-xl);
}

.work-card {
  display: grid;
  gap: var(--space-xs);
  min-height: 158px;
  padding: var(--space-lg);
  border-radius: var(--radius-lg);
}

.work-card:hover {
  border-color: var(--color-primary);
}

.work-title {
  color: var(--color-ink);
  font-size: 17px;
  font-weight: 600;
  line-height: 1.24;
}

.work-desc {
  color: var(--color-ink-muted);
  font-size: 14px;
  line-height: 1.43;
  overflow-wrap: anywhere;
}

.writing-list {
  display: grid;
  gap: var(--space-sm);
  margin-top: var(--space-xl);
}

.writing-item {
  display: grid;
  gap: var(--space-xs);
  padding: var(--space-lg);
  border-color: rgb(255, 255, 255, 0.16);
  border-radius: var(--radius-lg);
  background: rgb(255, 255, 255, 0.06);
}

.writing-item:hover {
  border-color: var(--color-primary-on-dark);
}

.writing-meta {
  color: var(--color-body-muted);
  font-size: 12px;
  line-height: 1.3;
}

.writing-title {
  color: var(--color-canvas);
  font-size: 24px;
  line-height: 1.2;
}

.writing-excerpt {
  color: var(--color-body-muted);
  font-size: 17px;
  line-height: 1.47;
}

.visual-slot {
  width: 100%;
}

.visual-stage {
  position: relative;
  width: 100%;
  overflow: hidden;
  border: 1px solid rgb(0, 0, 0, 0.08);
  border-radius: var(--radius-lg);
  background: var(--color-pearl);
  box-shadow: var(--product-shadow);
}

.product-tile-dark .visual-stage,
.product-tile-dark-2 .visual-stage {
  border-color: rgb(255, 255, 255, 0.16);
  background: var(--color-dark-3);
}

.visual-slot-hero .visual-stage {
  aspect-ratio: 21 / 9;
  border-radius: var(--radius-lg);
}

.visual-slot-formal .visual-stage,
.visual-slot-data .visual-stage {
  aspect-ratio: 16 / 9;
}

.visual-slot-card .visual-stage,
.visual-slot-hardware .visual-stage {
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-sm);
  box-shadow: none;
}

.visual-image {
  display: block;
  width: 100%;
  height: 100%;
  filter: contrast(1.06) saturate(1.04);
  object-fit: cover;
}

.footer {
  color: var(--color-ink-soft);
  background: var(--color-parchment);
}

.footer-inner {
  display: flex;
  gap: var(--space-xl);
  justify-content: space-between;
  width: min(100% - 48px, var(--content-reading));
  margin: 0 auto;
  padding: 64px 0 var(--space-lg);
}

.footer-brand {
  color: var(--color-ink);
}

.footer p {
  max-width: 420px;
  margin: var(--space-xs) 0 0;
  font-size: 12px;
  line-height: 1.4;
}

.footer-links {
  display: grid;
  gap: var(--space-xs);
  min-width: 220px;
  font-size: 12px;
}

.footer-links a:hover {
  color: var(--color-primary);
}

.footer-bottom {
  width: min(100% - 48px, var(--content-reading));
  margin: 0 auto;
  padding: var(--space-lg) 0 40px;
  border-top: 1px solid var(--color-hairline);
  color: var(--color-ink-muted);
}

.footer-bottom p {
  margin: 0;
}

/* Post/article readability rules */
.page-content,
.post,
.post-content {
  color: var(--color-ink);
  background: var(--color-canvas);
}

.post {
  width: min(100% - 40px, 820px);
  margin: 0 auto;
  padding: 64px 0;
}

.post-title,
.post-content h1,
.post-content h2,
.post-content h3 {
  color: var(--color-ink);
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0;
}

.post-title {
  font-size: clamp(36px, 5vw, 56px);
  line-height: 1.1;
}

.post-content {
  font-size: 17px;
  line-height: 1.65;
}

.post-content p,
.post-content li {
  color: var(--color-ink-soft);
}

.post-content a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.post-content img {
  height: auto;
  margin: var(--space-xl) auto;
  border-radius: var(--radius-sm);
}

.post-content pre,
.post-content code {
  border-radius: var(--radius-sm);
  background: var(--color-parchment);
}

.post-content pre {
  overflow-x: auto;
  padding: var(--space-md);
}

.post-content code {
  padding: 2px 5px;
}

.post-content pre code {
  padding: 0;
}

.post-content blockquote {
  margin: var(--space-xl) 0;
  padding-left: var(--space-lg);
  border-left: 3px solid var(--color-primary);
  color: var(--color-ink-soft);
}

/* Responsive rules */
@media (max-width: 1068px) {
  .hero-grid,
  .split-tile,
  .split-tile-reverse {
    grid-template-columns: 1fr;
  }

  .projects-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .project-card-featured {
    grid-row: auto;
  }
}

@media (max-width: 833px) {
  .nav-shell {
    grid-template-columns: auto auto;
    justify-content: space-between;
  }

  .global-links {
    display: none;
  }

  .sub-nav-links a:not(.sub-nav-cta) {
    display: none;
  }

  .tile-inner {
    width: min(100% - 32px, var(--content-wide));
    padding: 56px 0;
  }

  .hero-tile .tile-inner {
    padding-top: 48px;
  }

  .hero-subtitle,
  .tile-copy p,
  .section-heading p {
    font-size: 19px;
  }

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

  .footer-inner {
    flex-direction: column;
  }
}

@media (max-width: 640px) {
  body {
    font-size: 16px;
  }

  .nav-shell,
  .sub-nav-shell,
  .tile-inner,
  .footer-inner,
  .footer-bottom {
    width: min(100% - 24px, var(--content-wide));
  }

  .language-button {
    min-width: 40px;
    padding: 0 8px;
  }

  .sub-nav-title {
    font-size: 18px;
  }

  .hero-title {
    font-size: 34px;
  }

  .section-title {
    font-size: 32px;
  }

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

  .project-content,
  .work-card,
  .writing-item {
    padding: var(--space-md);
  }

  .visual-slot-formal .visual-stage,
  .visual-slot-data .visual-stage {
    aspect-ratio: 16 / 9;
  }

  .chip-row span,
  .tag-row span {
    min-height: 30px;
  }
}

@media (max-width: 419px) {
  .hero-title {
    font-size: 28px;
  }

  .hero-subtitle,
  .tile-copy p,
  .section-heading p {
    font-size: 17px;
  }

  .cta-row {
    flex-direction: column;
    align-items: flex-start;
  }
}