@import url('https://fonts.googleapis.com/css2?family=Albert+Sans:ital,wght@0,100..900;1,100..900&family=Space+Mono:ital,wght@0,400;0,700;1,400;1,700&display=swap');

:root {
  color-scheme: light;

  --paper: #f5f2ee;
  --paper-soft: #ede9e3;
  --paper-highlight: #e0dbd3;

  --ink: #1c1917;
  --body-text: #292524;
  --muted: #78716c;

  --rule: #ddd8d1;

  --accent: #4a6fa5;
  --accent-soft: rgba(74, 111, 165, 0.1);

  --link: #3b5f8a;

  --code: #1c1917;
  --code-bg: rgba(28, 25, 23, 0.06);

  --panel-bg: rgba(255, 253, 250, 0.75);
  --chip-bg: #e8e3dc;
  --chip-ink: #1c1917;

  --shadow: 0 12px 40px rgba(0, 0, 0, 0.07);

  --space-xs: 0.35rem;
  --space-sm: 0.55rem;
  --space-md: 1rem;

  --max: 1040px;

  --sans: 'Albert Sans', system-ui, sans-serif;
  --mono: 'Space Mono', ui-monospace, monospace;
}

html[data-theme="dark"] {
  color-scheme: dark;

  --paper: #0e0e0e;
  --paper-soft: #141414;
  --paper-highlight: #1a1a1a;

  --ink: #d1cfc9;
  --body-text: #b8b5ae;
  --muted: #7a7670;

  --rule: #1e2330;

  --accent: #7b93c8;
  --accent-soft: rgba(123, 147, 200, 0.15);

  --link: #8fa5d0;

  --code: #c9c6bf;
  --code-bg: rgba(255, 255, 255, 0.06);

  --panel-bg: rgba(20, 20, 20, 0.85);
  --chip-bg: #1e1e1e;
  --chip-ink: #c9c6bf;

  --shadow: 0 20px 60px rgba(0, 0, 0, 0.65);
}

@media (prefers-color-scheme: dark) {
  html:not([data-theme="light"]) {
    color-scheme: dark;

    --paper: #05070b;
    --paper-soft: #0b0f17;
    --paper-highlight: #111827;

    --ink: #d1cfc9;
    --body-text: #b8b5ae;
    --muted: #7a7670;

    --rule: #1e2330;

    --accent: #7b93c8;
    --accent-soft: rgba(123, 147, 200, 0.15);

    --link: #8fa5d0;

    --code: #c9c6bf;
    --code-bg: rgba(255, 255, 255, 0.06);

    --panel-bg: rgba(10, 14, 22, 0.85);
    --chip-bg: #151c28;
    --chip-ink: #c9c6bf;

    --shadow: 0 20px 60px rgba(0, 0, 0, 0.65);
  }
}

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

html {
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
  font-size: 100%;
  line-height: 1.55;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
}

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

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

a {
  color: var(--link);
  text-decoration: none;
}

a:hover {
  color: var(--accent);
  text-decoration: underline;
}

:is(a, .button, .theme-toggle):focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 0.125rem;
}

p {
  margin: 0 0 1rem;
}

:is(h1, h2, h3) {
  line-height: 1.2;
  margin: 0;
}

h1 {
  font-size: clamp(2.2rem, 4.5vw, 3.6rem);
  font-weight: 500;
  letter-spacing: -0.02em;
}

h2 {
  font-family: var(--sans);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

h3 {
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

code {
  font-family: var(--mono);
  color: var(--code);
  background: var(--code-bg);
  padding: 0.08rem 0.22rem;
  border-radius: 0.22rem;
  font-size: 0.875em;
}

.site-header {
  width: min(var(--max), calc(100vw - 2rem));
  margin: 0 auto;
  padding: 1.15rem 0 0.85rem;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-md);
  border-bottom: 1px solid var(--rule);
}

.wordmark {
  font-family: var(--mono);
  font-size: 1rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  text-decoration: none;
  white-space: nowrap;
  color: var(--ink);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.site-nav {
  display: flex;
  gap: var(--space-md);
  align-items: center;
  flex-wrap: wrap;
  font-family: var(--mono);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.site-nav a {
  color: var(--muted);
}

:is(.site-nav a[aria-current="page"], .site-nav a:hover) {
  color: var(--ink);
  text-decoration: none;
}

.theme-toggle {
  appearance: none;
  border: 1px solid var(--rule);
  border-radius: 999px;
  background: var(--panel-bg);
  color: var(--muted);
  cursor: pointer;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  line-height: 1;
  padding: 0.42rem 0.62rem;
  text-transform: uppercase;
}

.theme-toggle:hover {
  border-color: var(--accent);
  color: var(--ink);
}

.theme-toggle::before {
  content: "◐";
  margin-right: var(--space-xs);
}

.shell {
  width: min(var(--max), calc(100vw - 2rem));
  margin: 0 auto;
  padding: clamp(2rem, 5vw, 4rem) 1.25rem;
}

.home-grid {
  display: grid;
  grid-template-columns: minmax(240px, 0.82fr) minmax(0, 1.55fr);
  gap: clamp(1.75rem, 5vw, 4.5rem);
  align-items: start;
}

.page-grid {
  display: grid;
  grid-template-columns: minmax(210px, 0.62fr) minmax(0, 1.45fr);
  gap: clamp(1.5rem, 5vw, 4rem);
}

.panel {
  border: 1px solid var(--rule);
  background: var(--panel-bg);
  border-radius: 1.1rem;
  box-shadow: var(--shadow);
}

.identity {
  position: sticky;
  top: 1.25rem;
  padding: 1.5rem 1.5rem 1.25rem;
}

.portrait-frame {
  margin: 0 0 var(--space-md);
  border: 1px solid var(--rule);
  border-radius: 0.9rem;
  overflow: hidden;
  background: var(--paper-soft);
  aspect-ratio: 1 / 1;
}

.portrait {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.92) contrast(1.02);
}

.identity h1 {
  font-size: clamp(1.9rem, 3.5vw, 2.8rem);
  margin: 0.2rem 0 0.45rem;
}

.affiliation {
  color: var(--muted);
  margin-bottom: 1.2rem;
  font-size: 0.875rem;
}

.affiliation a {
  color: inherit;
}

.affiliation a:hover {
  color: var(--accent);
  text-decoration: none;
}

.eyebrow {
  margin: 0 0 0.5rem;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 600;
}

.contact-list {
  display: grid;
  gap: 0.7rem;
  margin: var(--space-md) 0 1.2rem;
}

.contact-list div {
  display: grid;
  gap: 0.15rem;
  padding-top: 0.65rem;
  border-top: 1px solid var(--rule);
}

.contact-list dt {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.contact-list dd {
  margin: 0;
  font-size: 0.8rem;
}

.main-copy,
.page-body {
  min-width: 0;
}

.intro {
  padding-top: 0.5rem;
  font-size: 1.05rem;
  line-height: 1.65;
}

.prose p {
  margin-bottom: 1.25rem;
  color: var(--body-text);
}

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

.lead-block {
  font-size: 1rem;
  line-height: 1.65;
  color: var(--body-text);
}

.section-block {
  margin-top: 2.35rem;
  padding-top: 1.15rem;
  border-top: 1px solid var(--rule);
}

.section-block.first {
  margin-top: 1.75rem;
}

.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.section-head h2 {
  color: var(--accent);
}

.section-head a {
  font-family: var(--mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.interests-prose {
  margin-bottom: 0.9rem;
}

.interest-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
  padding: 0;
  margin: 0;
}

.interest-list li {
  border: 1px solid var(--rule);
  border-radius: 999px;
  padding: var(--space-xs) 0.65rem;
  background: var(--chip-bg);
  color: var(--chip-ink);
  font-size: 0.875rem;
}

:is(.paper, .entry) {
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--rule);
}

:is(.paper, .entry):first-of-type {
  padding-top: 0;
}

:is(.paper, .entry):last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.paper.compact {
  padding-bottom: var(--space-xs);
}

:is(.authors, .meta, .links) {
  color: var(--muted);
  margin: var(--space-xs) 0 0;
  font-size: 0.875rem;
}

:is(.authors, .meta, .links) a {
  color: inherit;
}

:is(.authors, .meta, .links) a:hover {
  color: var(--accent);
}

.resource-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
}

.resource-list li {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  padding: 0.7rem 0;
  border-bottom: 1px solid var(--rule);
}

.resource-list li:first-child {
  padding-top: 0;
}

.resource-list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.resource-list a {
  font-size: 1rem;
  font-weight: 500;
}

.resource-note {
  font-size: 0.875rem;
  color: var(--muted);
  line-height: 1.5;
}

.talk-list,
.service-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.7rem;
}

.talk-list li,
.service-list li {
  display: grid;
  gap: 0.18rem;
  padding-bottom: 0.7rem;
  border-bottom: 1px solid var(--rule);
}

:is(.talk-list, .service-list) li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.talk-title {
  font-size: 1rem;
  font-weight: 600;
}

.page-kicker {
  position: sticky;
  top: 1.25rem;
  align-self: start;
}

.page-kicker h1 {
  font-size: clamp(1.9rem, 3.5vw, 2.8rem);
}

.site-footer {
  width: min(var(--max), calc(100vw - 2rem));
  margin: 0 auto;
  padding: var(--space-md) 0 2rem;
  border-top: 1px solid var(--rule);
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.8125rem;
  display: flex;
  justify-content: space-between;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.dotsep::before {
  content: "·";
  padding: 0 0.5em;
}

@media (min-width: 1800px) {
  html {
    font-size: 106.25%;
  }
}

@media (min-width: 2400px) {
  html {
    font-size: 112.5%;
  }
}

@media (max-width: 820px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .header-actions {
    justify-content: flex-start;
  }

  .home-grid,
  .page-grid {
    grid-template-columns: 1fr;
  }

  .identity,
  .page-kicker {
    position: static;
  }
}

@media (max-width: 560px) {
  .site-header,
  .shell,
  .site-footer {
    width: min(100vw - 2.5rem, var(--max));
    padding-left: 0;
    padding-right: 0;
  }

  .site-nav {
    gap: 0.65rem;
    font-size: 0.72rem;
  }

  .theme-toggle {
    font-size: 0.68rem;
    padding: 0.38rem 0.54rem;
  }

  .identity {
    padding: 1rem;
  }

  .section-head {
    align-items: flex-start;
    flex-direction: column;
    gap: var(--space-xs);
  }

  .button {
    width: 100%;
  }
}

@media (prefers-reduced-motion: no-preference) {
  :is(a, .button, .theme-toggle) {
    transition:
      color 120ms ease,
      border-color 120ms ease,
      background-color 120ms ease;
  }
}