/* --- self-hosted fonts --- */
@font-face {
  font-family: 'Instrument Serif';
  font-style: normal;
  font-weight: 400;
  src: url('/fonts/instrument-serif-400-normal.woff2') format('woff2');
  font-display: swap;
}
@font-face {
  font-family: 'Instrument Serif';
  font-style: italic;
  font-weight: 400;
  src: url('/fonts/instrument-serif-400-italic.woff2') format('woff2');
  font-display: swap;
}
@font-face {
  font-family: 'Public Sans';
  font-style: normal;
  font-weight: 400;
  src: url('/fonts/public-sans-400-normal.woff2') format('woff2');
  font-display: swap;
}
@font-face {
  font-family: 'Public Sans';
  font-style: normal;
  font-weight: 500;
  src: url('/fonts/public-sans-500-normal.woff2') format('woff2');
  font-display: swap;
}
@font-face {
  font-family: 'Public Sans';
  font-style: normal;
  font-weight: 600;
  src: url('/fonts/public-sans-600-normal.woff2') format('woff2');
  font-display: swap;
}
@font-face {
  font-family: 'Public Sans';
  font-style: italic;
  font-weight: 400;
  src: url('/fonts/public-sans-400-italic.woff2') format('woff2');
  font-display: swap;
}
@font-face {
  font-family: 'Public Sans';
  font-style: italic;
  font-weight: 600;
  src: url('/fonts/public-sans-600-italic.woff2') format('woff2');
  font-display: swap;
}
@font-face {
  font-family: 'Overpass Mono';
  font-style: normal;
  font-weight: 400;
  src: url('/fonts/overpass-mono-400-normal.woff2') format('woff2');
  font-display: swap;
}
@font-face {
  font-family: 'Overpass Mono';
  font-style: normal;
  font-weight: 600;
  src: url('/fonts/overpass-mono-600-normal.woff2') format('woff2');
  font-display: swap;
}

/* --- design tokens / custom properties --- */
:root {
  /* Default: Light Mode ("Instrument Paper") */
  --bg-color: #EDF1F4;
  --text-color: #0B1622;
  --text-secondary: #52627A;
  --accent-color: #E8A33D;
  --structure-color: #3A4A5A;
  --hairline-color: #D3DBE1;
  --card-bg: #FFFFFF;
  --card-hover-border: #3A4A5A;
  --nav-hover: #E8A33D;
  
  --font-display: 'Instrument Serif', serif;
  --font-body: 'Public Sans', sans-serif;
  --font-mono: 'Overpass Mono', monospace;
  
  --transition-speed: 0.25s;

  /* Focus ring tokens (Task #211) */
  --focus-color: #946012; /* Accessible amber on light paper (>= 4.5:1 contrast) */
  --focus-ring-width: 2px;
  --focus-ring-offset: 2px;
}

[data-theme="dark"] {
  /* Dark Mode ("Deep Field") */
  --bg-color: #0B1622;
  --text-color: #EDF1F4;
  --text-secondary: #9DAAB8;
  --accent-color: #E8A33D;
  --structure-color: #3A4A5A;
  --hairline-color: #1A2E44;
  --card-bg: #112032;
  --card-hover-border: #6E8093;
  --nav-hover: #E8A33D;
  
  --focus-color: #eeb257; /* Bright amber on dark background */
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg-color: #0B1622;
    --text-color: #EDF1F4;
    --text-secondary: #9DAAB8;
    --accent-color: #E8A33D;
    --structure-color: #3A4A5A;
    --hairline-color: #1A2E44;
    --card-bg: #112032;
    --card-hover-border: #6E8093;
    --nav-hover: #E8A33D;
    
    --focus-color: #eeb257;
  }
}

/* --- global base styles --- */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--bg-color);
  color: var(--text-color);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  transition: background-color var(--transition-speed) ease, color var(--transition-speed) ease;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* --- header & nav --- */
.site-header {
  border-bottom: 1px solid var(--hairline-color);
  padding: 1.5rem 2rem;
  transition: border-color var(--transition-speed) ease;
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.wordmark {
  font-family: var(--font-mono);
  font-weight: 600;
  text-decoration: none;
  color: var(--text-color);
  font-size: 1.25rem;
  letter-spacing: -0.05em;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.site-nav a {
  font-family: var(--font-mono);
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 0.95rem;
  transition: color var(--transition-speed) ease;
}

.site-nav a:hover,
.site-nav a.active {
  color: var(--text-color);
}

/* --- theme toggle button --- */
.theme-toggle {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 0.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color var(--transition-speed) ease;
}

.theme-toggle:hover {
  color: var(--text-color);
}

.theme-toggle svg {
  width: 20px;
  height: 20px;
}

/* Show/hide icons based on theme */
html[data-theme="dark"] .theme-toggle .sun {
  display: block;
}
html[data-theme="dark"] .theme-toggle .moon {
  display: none;
}

html[data-theme="light"] .theme-toggle .sun {
  display: none;
}
html[data-theme="light"] .theme-toggle .moon {
  display: block;
}

/* Default state respecting system preference when data-theme is not explicitly set */
@media (prefers-color-scheme: dark) {
  html:not([data-theme="light"]) .theme-toggle .sun {
    display: block;
  }
  html:not([data-theme="light"]) .theme-toggle .moon {
    display: none;
  }
}
@media (prefers-color-scheme: light) {
  html:not([data-theme="dark"]) .theme-toggle .sun {
    display: none;
  }
  html:not([data-theme="dark"]) .theme-toggle .moon {
    display: block;
  }
}

/* --- main content container --- */
#content {
  flex: 1;
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  padding: 3rem 2rem;
}

.homepage-container {
  display: flex;
  flex-direction: column;
  gap: 4rem;
}

/* --- hero section --- */
.hero-section {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.hero-title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 3rem;
  line-height: 1.15;
  letter-spacing: -0.02em;
  max-width: 900px;
}

@media (max-width: 768px) {
  .hero-title {
    font-size: 2.25rem;
  }
}

/* --- signature element SVG styling --- */
.signature-container {
  padding: 2rem 0;
  display: flex;
  justify-content: center;
  align-items: center;
}

.great-circle-svg {
  width: 100%;
  max-width: 800px;
  height: auto;
}

.earth-horizon {
  transition: stroke var(--transition-speed) ease;
}

.pop-label {
  font-family: var(--font-mono);
  font-size: 11px;
  fill: var(--text-secondary);
  letter-spacing: 0.05em;
  transition: fill var(--transition-speed) ease;
}

.apogee-label {
  font-family: var(--font-mono);
  font-size: 10px;
  fill: var(--accent-color);
  font-weight: 600;
  letter-spacing: 0.05em;
}

/* --- signature element: Great Circle draw-on-load ---
   Progressive enhancement. The BASE state (no JavaScript, or a user who prefers
   reduced motion) is the final, fully-drawn arc: nothing is hidden and nothing
   moves. The JS layer (layouts/partials/motion-init.html) adds the `gc-animate`
   hook to <html> only when JS runs AND motion is welcome; that class is what
   arms the stroke-dash draw. So: JS off => static final; reduced-motion =>
   static final; otherwise the arc draws itself once, on load. */
@keyframes drawGeodesic {
  to {
    stroke-dashoffset: 0;
  }
}

.ground-geodesic {
  opacity: 0.8;
  transition: stroke var(--transition-speed) ease;
}

.orbital-arc {
  transition: stroke var(--transition-speed) ease;
}

/* Armed only once JS has confirmed motion is welcome. */
.gc-animate .ground-geodesic {
  stroke-dasharray: 600;
  stroke-dashoffset: 600;
  animation: drawGeodesic 1.2s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.gc-animate .geodesic-2 {
  animation-duration: 1.5s;
  animation-delay: 0.2s;
}

.gc-animate .geodesic-3 {
  animation-duration: 1s;
  animation-delay: 0.5s;
}

.gc-animate .geodesic-4 {
  animation-duration: 1.8s;
  animation-delay: 0.7s;
}

.gc-animate .orbital-arc {
  stroke-dasharray: 1200;
  stroke-dashoffset: 1200;
  animation: drawGeodesic 2.2s cubic-bezier(0.4, 0, 0.2, 1) forwards;
  animation-delay: 1.2s; /* Lifts off after the ground network resolves. */
}

/* Belt-and-suspenders: if the hook is ever present, still honor reduced motion. */
@media (prefers-reduced-motion: reduce) {
  .gc-animate .ground-geodesic,
  .gc-animate .orbital-arc {
    animation: none !important;
    stroke-dasharray: none !important;
    stroke-dashoffset: 0 !important;
  }
}

/* --- intro section --- */
.intro-section {
  max-width: 800px;
}

.intro-text {
  font-size: 1.25rem;
  line-height: 1.6;
  color: var(--text-color);
  letter-spacing: -0.01em;
}

@media (max-width: 768px) {
  .intro-text {
    font-size: 1.125rem;
  }
}

/* --- data blocks --- */
.data-blocks {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  border-top: 1px solid var(--hairline-color);
  padding-top: 3rem;
}

@media (max-width: 768px) {
  .data-blocks {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
}

.block-title {
  font-family: var(--font-mono);
  text-transform: uppercase;
  font-size: 0.85rem;
  color: var(--text-secondary);
  letter-spacing: 0.1em;
  margin-bottom: 1.5rem;
}

.data-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.data-list li {
  display: flex;
  align-items: baseline;
  gap: 1.5rem;
  border-bottom: 1px solid var(--hairline-color);
  padding-bottom: 0.75rem;
  transition: border-color var(--transition-speed) ease;
}

.data-list li:last-child {
  border-bottom: none;
}

.data-num {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 1.1rem;
  width: 120px;
  flex-shrink: 0;
  color: var(--text-color);
}

.data-label {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

/* --- selected work section --- */
.work-section {
  border-top: 1px solid var(--hairline-color);
  padding-top: 3rem;
}

.section-heading {
  font-family: var(--font-mono);
  text-transform: uppercase;
  font-size: 0.85rem;
  color: var(--text-secondary);
  letter-spacing: 0.1em;
  margin-bottom: 2rem;
}

.work-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.work-card {
  background-color: var(--card-bg);
  border: 1px solid var(--hairline-color);
  border-radius: 6px;
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 200px;
  transition: background-color var(--transition-speed) ease, border-color var(--transition-speed) ease;
}

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

.card-title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 1.75rem;
  margin-bottom: 0.75rem;
  letter-spacing: -0.01em;
  line-height: 1.2;
}

.card-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.card-tech {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--text-secondary);
  letter-spacing: 0.05em;
}

/* --- footer --- */
.site-footer {
  border-top: 1px solid var(--hairline-color);
  padding: 3rem 2rem;
  transition: border-color var(--transition-speed) ease;
  background-color: var(--bg-color);
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.5rem;
}

@media (max-width: 768px) {
  .footer-container {
    flex-direction: column;
    align-items: flex-start;
  }
}

.contact-email {
  font-family: var(--font-mono);
  color: var(--text-color);
  text-decoration: none;
  font-size: 1.1rem;
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition-speed) ease;
}

.contact-email:hover {
  border-color: var(--text-color);
}

.footer-links {
  display: flex;
  gap: 1.5rem;
  align-items: center;
  flex-wrap: wrap;
}

.footer-links a {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-speed) ease;
}

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

.pgp-key {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--text-secondary);
  cursor: help;
}

/* --- simple single page style for clean rendering --- */
.single-page {
  max-width: 800px;
  margin: 0 auto;
}

.single-page h1 {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 400;
  margin-bottom: 2rem;
}

.single-page .content p {
  margin-bottom: 1.5rem;
  font-size: 1.1rem;
}

/* --- accessibility: skip link & keyboard focus states (Task #211) --- */
:focus-visible {
  outline: var(--focus-ring-width) solid var(--focus-color);
  outline-offset: var(--focus-ring-offset);
  border-radius: 4px;
}

/* Fallback for legacy browsers without focus-visible support */
@supports not selector(:focus-visible) {
  :focus {
    outline: var(--focus-ring-width) solid var(--focus-color);
    outline-offset: var(--focus-ring-offset);
  }
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  padding: 0.5rem 1rem;
  background: var(--bg-color);
  color: var(--text-color);
  border: 1px solid var(--accent-color);
  z-index: 100;
}

.skip-link:focus,
.skip-link:focus-visible {
  left: 1rem;
  top: 1rem;
}

/* ==========================================================================
   About page (task #208)
   Tokens below alias the site palette so the about styles resolve and follow
   light/dark automatically; the type/space scale is defined here explicitly.
   ========================================================================== */
:root {
  /* color aliases -> site palette (track theme via var() substitution) */
  --color-bg: var(--bg-color);
  --color-ink: var(--text-color);
  --color-ink-muted: var(--text-secondary);
  --color-structure: var(--structure-color);
  --color-accent: var(--accent-color);
  --color-hairline: var(--hairline-color);

  /* type scale */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-3xl: 2.25rem;
  --text-4xl: 2.75rem;

  /* line height */
  --leading-tight: 1.2;
  --leading-snug: 1.35;
  --leading-normal: 1.55;
  --leading-relaxed: 1.7;

  /* letter spacing */
  --tracking-tight: -0.02em;
  --tracking-wide: 0.06em;
  --tracking-mono: 0.02em;

  /* spacing */
  --space-1: 0.25rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-7: 3rem;
  --space-8: 4rem;

  /* measure */
  --measure: 38rem;
  --measure-wide: 48rem;
}

/* About page. Great Circle: quiet chrome, display for titles, mono for data/timeline. */
.about {
  max-width: var(--measure-wide);
}

.about__header {
  max-width: var(--measure);
  margin-bottom: var(--space-7);
}

.about__eyebrow {
  margin: 0 0 var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: var(--tracking-wide);
  text-transform: lowercase;
  color: var(--color-ink-muted);
}

.about__title {
  margin: 0 0 var(--space-4);
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(var(--text-3xl), 5vw, var(--text-4xl));
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  color: var(--color-ink);
}

.about__lede {
  margin: 0;
  font-size: var(--text-lg);
  line-height: var(--leading-snug);
  color: var(--color-structure);
}

.about__section {
  margin-bottom: var(--space-7);
  max-width: var(--measure);
}

.about__section--wide {
  max-width: var(--measure-wide);
}

.about__section h2 {
  margin: 0 0 var(--space-4);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--color-ink-muted);
}

.about__bio p {
  margin: 0 0 var(--space-4);
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
  color: var(--color-ink);
}

.about__bio p:last-child {
  margin-bottom: 0;
}

/* Timeline: vertical list with mono years. Quiet; boldness stays on home signature. */
.timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  border-left: 1px solid var(--color-hairline);
}

.timeline__item {
  position: relative;
  padding: 0 0 var(--space-5) var(--space-5);
}

.timeline__item:last-child {
  padding-bottom: 0;
}

.timeline__item::before {
  content: "";
  position: absolute;
  left: -0.28rem;
  top: 0.45rem;
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--color-bg);
  border: 1px solid var(--color-structure);
}

.timeline__item--now::before {
  background: var(--color-accent);
  border-color: var(--color-accent);
}

.timeline__when {
  display: block;
  margin-bottom: var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: var(--tracking-mono);
  color: var(--color-ink-muted);
}

.timeline__what {
  margin: 0;
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-ink);
}

.about__edu {
  margin: 0;
  font-size: var(--text-base);
  line-height: var(--leading-normal);
}

.about__edu dt {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: var(--tracking-mono);
  color: var(--color-ink-muted);
  margin-bottom: var(--space-1);
}

.about__edu dd {
  margin: 0;
  color: var(--color-ink);
}

/* Name origin: footnote, not a headline */
.about__footnote {
  max-width: var(--measure);
  margin-top: var(--space-8);
  padding-top: var(--space-5);
  border-top: 1px solid var(--color-hairline);
}

.about__footnote p {
  margin: 0;
  font-size: var(--text-sm);
  line-height: var(--leading-normal);
  color: var(--color-ink-muted);
}

.about__footnote cite {
  font-style: normal;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-mono);
}

@media (min-width: 768px) {
  .timeline__item {
    display: grid;
    grid-template-columns: 7rem 1fr;
    gap: var(--space-4);
    align-items: baseline;
  }

  .timeline__when {
    margin-bottom: 0;
  }
}

/* ==========================================================================
   Work page (task #209)
   Reuses the site palette + about-page scale tokens. Quiet chrome, display
   for section-defining titles, mono for the network/mission data rows.
   ========================================================================== */
.work-page {
  max-width: var(--measure-wide);
}

.work-page__header {
  max-width: var(--measure);
  margin-bottom: var(--space-7);
}

.work-page__eyebrow {
  margin: 0 0 var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: var(--tracking-wide);
  text-transform: lowercase;
  color: var(--color-ink-muted);
}

.work-page__title {
  margin: 0 0 var(--space-4);
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(var(--text-3xl), 5vw, var(--text-4xl));
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  color: var(--color-ink);
}

.work-page__lede {
  margin: 0;
  font-size: var(--text-lg);
  line-height: var(--leading-snug);
  color: var(--color-structure);
}

.work-page__section {
  margin-bottom: var(--space-8);
  max-width: var(--measure-wide);
  border-top: 1px solid var(--color-hairline);
  padding-top: var(--space-7);
}

.work-page__section h2 {
  margin: 0 0 var(--space-5);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--color-ink-muted);
}

.work-page__prose {
  margin: 0 0 var(--space-5);
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
  color: var(--color-ink);
}

.work-page__prose--rich p {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
  color: var(--color-ink);
}

/* Data rows: mono key + muted label. Shared by network stats and missions. */
.work-data {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 var(--space-7);
}

.work-data li {
  display: flex;
  align-items: baseline;
  gap: var(--space-4);
  border-bottom: 1px solid var(--color-hairline);
  padding: var(--space-3) 0;
}

.work-data__num {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: var(--text-base);
  color: var(--color-ink);
  flex-shrink: 0;
  min-width: 7.5rem;
}

.work-data__label {
  font-size: var(--text-sm);
  line-height: var(--leading-snug);
  color: var(--color-ink-muted);
}

.work-data--missions .work-data__num {
  min-width: 9rem;
}

@media (max-width: 640px) {
  .work-data {
    grid-template-columns: 1fr;
    gap: 0;
  }
}

/* Platform grid: reuses the card idiom from the home page, scoped here. */
.platform-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-4);
}

.platform-card {
  background-color: var(--card-bg);
  border: 1px solid var(--color-hairline);
  border-radius: 6px;
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  min-height: 180px;
  transition: border-color var(--transition-speed) ease;
}

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

.platform-card__name {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 1.6rem;
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  margin: 0 0 var(--space-3);
  color: var(--color-ink);
}

.platform-card__desc {
  font-size: var(--text-sm);
  line-height: var(--leading-normal);
  color: var(--color-ink-muted);
  margin: 0 0 var(--space-4);
  flex-grow: 1;
}

.platform-card__tech {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  color: var(--color-ink-muted);
}

/* Foundation / ORP */
.foundation-points {
  list-style: none;
  margin: 0 0 var(--space-5);
  padding: 0;
  max-width: var(--measure);
}

.foundation-points li {
  position: relative;
  padding: var(--space-3) 0 var(--space-3) var(--space-5);
  border-bottom: 1px solid var(--color-hairline);
  font-size: var(--text-sm);
  color: var(--color-ink);
}

.foundation-points li:last-child {
  border-bottom: none;
}

.foundation-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 1.15rem;
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--color-accent);
}

.work-page__note {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-sm);
  line-height: var(--leading-normal);
  color: var(--color-ink-muted);
}

.work-page__section:first-of-type {
  border-top: none;
  padding-top: 0;
}

/* ==========================================================================
   Writing index + posts (task #210)
   Reuses the site palette aliases and type scale defined above. Quiet chrome,
   display for titles, mono for dates and utility labels.
   ========================================================================== */
.writing,
.post {
  max-width: var(--measure-wide);
}

.writing__header {
  max-width: var(--measure);
  margin-bottom: var(--space-7);
}

.writing__eyebrow {
  margin: 0 0 var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: var(--tracking-wide);
  text-transform: lowercase;
  color: var(--color-ink-muted);
}

.writing__title {
  margin: 0 0 var(--space-4);
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(var(--text-3xl), 5vw, var(--text-4xl));
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  color: var(--color-ink);
}

.writing__lede {
  margin: 0 0 var(--space-4);
  font-size: var(--text-lg);
  line-height: var(--leading-snug);
  color: var(--color-structure);
}

.writing__feed {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: var(--tracking-mono);
  color: var(--color-ink-muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--transition-speed) ease, border-color var(--transition-speed) ease;
}

.writing__feed:hover {
  color: var(--color-ink);
  border-bottom-color: var(--color-accent);
}

.writing__empty {
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
  color: var(--color-ink-muted);
}

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

.writing-entry {
  padding: var(--space-5) 0;
  border-top: 1px solid var(--color-hairline);
}

.writing-entry:last-child {
  border-bottom: 1px solid var(--color-hairline);
}

.writing-entry__date {
  display: block;
  margin-bottom: var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: var(--tracking-mono);
  color: var(--color-ink-muted);
}

.writing-entry__title {
  margin: 0 0 var(--space-1);
  font-family: var(--font-display);
  font-weight: 400;
  font-size: var(--text-3xl);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
}

.writing-entry__title a {
  color: var(--color-ink);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition-speed) ease;
}

.writing-entry__title a:hover {
  border-bottom-color: var(--color-accent);
}

.writing-entry__desc {
  margin: var(--space-1) 0 0;
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-ink-muted);
}

@media (min-width: 768px) {
  .writing-entry {
    display: grid;
    grid-template-columns: 7rem 1fr;
    gap: var(--space-5);
    align-items: baseline;
  }

  .writing-entry__date {
    margin-bottom: 0;
  }
}

/* --- single post --- */
.post {
  max-width: var(--measure);
}

.post__header {
  margin-bottom: var(--space-7);
}

.post__eyebrow {
  margin: 0 0 var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: var(--tracking-wide);
  text-transform: lowercase;
}

.post__eyebrow a {
  color: var(--color-ink-muted);
  text-decoration: none;
  transition: color var(--transition-speed) ease;
}

.post__eyebrow a:hover {
  color: var(--color-ink);
}

.post__title {
  margin: 0 0 var(--space-3);
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(var(--text-3xl), 5vw, var(--text-4xl));
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  color: var(--color-ink);
}

.post__date {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: var(--tracking-mono);
  color: var(--color-ink-muted);
}

.post__body p {
  margin: 0 0 var(--space-5);
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
  color: var(--color-ink);
}

.post__body p:last-child {
  margin-bottom: 0;
}

.post__body a {
  color: var(--color-ink);
  text-decoration: underline;
  text-decoration-color: var(--color-accent);
  text-underline-offset: 2px;
}

.post__body code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  padding: 0.1em 0.35em;
  border-radius: 3px;
  background: var(--card-bg);
  border: 1px solid var(--color-hairline);
}

.post__footer {
  margin-top: var(--space-8);
  padding-top: var(--space-5);
  border-top: 1px solid var(--color-hairline);
}

.post__back {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: var(--tracking-mono);
  color: var(--color-ink-muted);
  text-decoration: none;
  transition: color var(--transition-speed) ease;
}

.post__back:hover {
  color: var(--color-ink);
}