/* =========================================================
   Tokens (colours live in theme-light.scss / theme-dark.scss)
   ========================================================= */

:root {
  --display: "Instrument Serif", "Iowan Old Style", Georgia, serif;
  --text: "Source Serif 4", "Source Serif Pro", Georgia, serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --wrap: 72rem;
  --gutter: clamp(1.25rem, 4.5vw, 3rem);
  --label-col: 11rem;
}

/* =========================================================
   Base
   ========================================================= */

html { -webkit-text-size-adjust: 100%; }

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--text);
  font-size: 1rem;
  line-height: 1.65;
  font-optical-sizing: auto;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

#quarto-content { background: transparent; }

main#quarto-document-content.content {
  grid-column: screen-start / screen-end !important;
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: clamp(2.25rem, 7vw, 5.5rem) var(--gutter) clamp(3.5rem, 9vw, 7rem);
}

p { line-height: 1.65; }

a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
  text-decoration-color: color-mix(in srgb, var(--accent) 40%, transparent);
  transition: color 0.2s ease, text-decoration-color 0.2s ease, background-color 0.2s ease;
}
a:hover {
  color: var(--accent);
  text-decoration-color: currentColor;
}

::selection { background: var(--accent); color: var(--on-accent); }

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

/* =========================================================
   Navbar
   ========================================================= */

#quarto-header .navbar {
  background: color-mix(in srgb, var(--paper) 90%, transparent) !important;
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--rule);
  padding: 0.55rem 0;
}

#quarto-header .navbar .navbar-container {
  max-width: var(--wrap) !important;
  margin-inline: auto !important;
  padding-inline: var(--gutter) !important;
}

.navbar .navbar-brand-container { margin-left: 0 !important; margin-right: auto !important; }

.navbar .navbar-brand,
.navbar .navbar-brand:hover { padding: 0; text-decoration: none; }

.navbar .navbar-title {
  font-family: var(--display);
  font-size: 1.65rem;
  line-height: 1;
  letter-spacing: -0.005em;
  color: var(--ink) !important;
}

.navbar .nav-link {
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-2) !important;
  text-decoration: none;
  padding: 0.5rem 0.75rem !important;
}
.navbar .navbar-nav { align-items: center; }
.navbar .nav-link { display: flex; align-items: center; min-height: 2.25rem; }
.navbar .nav-link:hover { color: var(--ink) !important; }
.navbar .nav-link.active { color: var(--ink) !important; }
.navbar .nav-link.active .menu-text {
  text-decoration: underline;
  text-decoration-color: var(--accent);
  text-decoration-thickness: 2px;
  text-underline-offset: 0.55em;
}
.navbar .nav-link .bi { font-size: 1rem; }

.navbar .quarto-navbar-tools .quarto-navigation-tool { color: var(--ink-2) !important; }
.navbar .quarto-navbar-tools .quarto-navigation-tool:hover { color: var(--ink) !important; }

.navbar .navbar-brand-container { order: 0; }
.navbar .navbar-collapse { order: 4; }
.navbar .quarto-navbar-tools { order: 2; margin-left: auto; }
.navbar .navbar-toggler {
  order: 3;
  border: 1px solid var(--rule);
  border-radius: 0;
  padding: 0.5rem 0.55rem;
  margin-left: 0.6rem;
}
.navbar .navbar-toggler:focus { box-shadow: none; }
.navbar .navbar-toggler-icon {
  width: 1.1rem;
  height: 0.7rem;
  background:
    linear-gradient(var(--ink), var(--ink)) top / 100% 1.5px no-repeat,
    linear-gradient(var(--ink), var(--ink)) bottom / 100% 1.5px no-repeat !important;
}
@media (min-width: 768px) {
  .navbar .navbar-collapse { order: 1; }
  .navbar .quarto-navbar-tools { margin-left: 0.25rem; }
}

@media (max-width: 767.98px) {
  .navbar .navbar-collapse {
    padding: 0.75rem 0 0.5rem;
  }
  .navbar .navbar-collapse .navbar-nav { flex-direction: column; align-items: flex-start; }
  .navbar .navbar-collapse .nav-link {
    font-family: var(--display);
    font-size: 1.6rem;
    letter-spacing: 0;
    text-transform: none;
    padding: 0.35rem 0 !important;
    color: var(--ink) !important;
  }
  .navbar .navbar-collapse .nav-link.active .menu-text { text-underline-offset: 0.2em; }
  .navbar .navbar-collapse .navbar-nav.ms-auto {
    flex-direction: row;
    gap: 1.25rem;
    margin-top: 0.75rem;
    padding-top: 0.75rem;
    border-top: 1px solid var(--rule);
  }
  .navbar .navbar-collapse .ms-auto .nav-link {
    font-family: var(--mono);
    font-size: 0.75rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
  }
}

/* =========================================================
   Shared type
   ========================================================= */

h1, h2, h3, h4 { color: var(--ink); }

#title-block-header.quarto-title-block { margin: 0 0 clamp(2.25rem, 5vw, 3.75rem) !important; }
.quarto-title-meta { display: none; }

h1.title {
  font-family: var(--display);
  font-weight: 400;
  font-size: clamp(3.5rem, 11vw, 7.5rem);
  line-height: 0.88;
  letter-spacing: -0.025em;
  margin: 0 0 0 -0.03em;
}

main h1:not(.title):not(.hero-name) {
  font-family: var(--display);
  font-weight: 400;
  font-size: clamp(2.1rem, 5.5vw, 3.4rem);
  line-height: 1.02;
  letter-spacing: -0.015em;
  max-width: 22ch;
  margin-bottom: 1.5rem;
}

main h2 {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  font-family: var(--mono);
  font-size: 0.74rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink);
  opacity: 1;
  border: 0;
  border-top: 1.5px solid var(--ink);
  padding: 1rem 0 0;
  margin: clamp(2.75rem, 7vw, 5rem) 0 0;
}
main h2::before {
  content: "";
  flex: none;
  width: 0.6rem;
  height: 0.6rem;
  background: var(--accent);
}
main section:first-of-type > h2,
.quarto-title-block + section > h2 { margin-top: 0; }

/* label (mono, small caps) used by pills */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  line-height: 1.3;
  white-space: nowrap;
  color: var(--ink-3);
  background: none;
  padding: 0;
  border-radius: 0;
}
.pill::before {
  content: "";
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  border: 1.5px solid currentColor;
}
.pill-wp { color: var(--accent); }
.pill-wp::before { background: currentColor; }

/* =========================================================
   Home
   ========================================================= */

body.home main#quarto-document-content {
  --photo-col: clamp(9.5rem, 17vw, 14.5rem);
  display: grid;
  grid-template-columns: var(--photo-col) minmax(0, 1fr);
  grid-template-areas:
    "photo name"
    "photo head"
    "photo text";
  grid-template-rows: auto auto auto;
  align-content: start;
  column-gap: clamp(2rem, 5vw, 4.5rem);
  align-items: start;
}
body.home main > :not(#title-block-header):not(.hero) { display: none; }
body.home .hero { display: contents; }
body.home #title-block-header { grid-area: name; margin: 0 !important; }
.hero-head { grid-area: head; }
.hero-photo-wrap { grid-area: photo; }
.hero-text { grid-area: text; }

body.home h1.title {
  font-size: clamp(4rem, 10.5vw, 9.25rem);
  line-height: 0.84;
  letter-spacing: -0.03em;
  max-width: 3.4em;
  margin: 0 0 0 -0.04em;
}

.hero-head p { margin: 0; }
.hero-title {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  margin-top: clamp(1.25rem, 2.5vw, 1.9rem);
  font-family: var(--mono);
  font-size: 0.74rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  line-height: 1.5;
  text-transform: uppercase;
  text-wrap: balance;
  color: var(--ink-2);
}
.hero-title::before {
  content: "";
  flex: none;
  width: 2.25rem;
  height: 2px;
  background: var(--accent);
}

.hero-text { margin-top: clamp(2rem, 4.5vw, 3.25rem); }
.hero-text > p { max-width: 34rem; color: var(--ink-2); margin-bottom: 1.1rem; }
.hero-text > p:first-child {
  font-family: var(--display);
  font-size: clamp(1.75rem, 3.1vw, 2.45rem);
  line-height: 1.12;
  letter-spacing: -0.01em;
  color: var(--ink);
  max-width: 19em;
  text-wrap: balance;
  margin-bottom: 1.5rem;
}

.hero-photo-wrap {
  position: relative;
  isolation: isolate;
  margin: 0.55rem 0.75rem 0.75rem 0;
}
.hero-photo-wrap::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: var(--accent);
  transform: translate(0.75rem, 0.75rem);
}
.hero-photo-wrap p { margin: 0; }
.hero-photo {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 3;
  object-fit: cover;
  border-radius: 0;
  box-shadow: none;
}

.hero-links { margin-top: 2rem; }
.hero-links p {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin: 0;
}
.hero-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.75rem 1.05rem;
  border: 1px solid var(--ink);
  border-radius: 0;
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  line-height: 1.2;
  color: var(--ink) !important;
  background: transparent;
  text-decoration: none;
}
.hero-btn:hover {
  background: var(--ink);
  color: var(--paper) !important;
  text-decoration: none;
}
.hero-btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--on-accent) !important;
}
.hero-btn-primary:hover {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--paper) !important;
}

@media (max-width: 719.98px) {
  body.home main#quarto-document-content {
    --photo-col: clamp(6rem, 30vw, 9.5rem);
    grid-template-areas:
      "photo name"
      "head  head"
      "text  text";
    column-gap: 1.25rem;
  }
  body.home #title-block-header { align-self: end; }
  body.home h1.title { font-size: clamp(3.25rem, 17.5vw, 6rem); }
  .hero-photo-wrap { margin-top: 0; }
  .hero-text { margin-top: 2.25rem; }
}

@media (max-width: 479.98px) {
  .hero-links p { flex-direction: column; align-items: stretch; }
  .hero-btn { justify-content: center; }
}

/* =========================================================
   Research
   ========================================================= */

.paper-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  padding: clamp(1.5rem, 3vw, 2.1rem) 0;
  margin: 0;
  border: 0;
  border-bottom: 1px solid var(--rule);
  border-radius: 0;
  background: none;
}
.paper-card > .paper-head { display: contents; }
.paper-head > p { order: -1; margin: 0 0 0.7rem; }

.paper-head h3 {
  font-family: var(--display);
  font-weight: 400;
  font-size: clamp(1.55rem, 2.8vw, 2.15rem);
  line-height: 1.08;
  letter-spacing: -0.01em;
  max-width: 28em;
  margin: 0;
}

.paper-meta {
  margin-top: 0.55rem;
  font-style: italic;
  color: var(--ink-2);
}
.paper-meta p { margin: 0; }

.paper-links { margin-top: 1rem; }
.paper-links p { display: flex; flex-wrap: wrap; gap: 1.25rem; margin: 0; }
.paper-link {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink) !important;
  text-decoration: none;
  border-bottom: 1.5px solid var(--accent);
  padding-bottom: 0.15rem;
}
.paper-link:hover { color: var(--accent) !important; text-decoration: none; }

.paper-abstract {
  margin-top: 0.9rem;
  max-width: 44rem;
  font-size: 0.97rem;
  line-height: 1.7;
  color: var(--ink-2);
}
.paper-abstract summary {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  list-style: none;
  cursor: pointer;
  user-select: none;
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink);
}
.paper-abstract summary::-webkit-details-marker { display: none; }
.paper-abstract summary::before {
  content: "";
  width: 0.65rem;
  height: 0.65rem;
  background:
    linear-gradient(var(--accent), var(--accent)) center / 100% 1.5px no-repeat,
    linear-gradient(var(--accent), var(--accent)) center / 1.5px 100% no-repeat;
  transition: transform 0.25s ease;
}
.paper-abstract[open] summary::before { transform: rotate(45deg); }
.paper-abstract[open] summary { margin-bottom: 0.6rem; }

/* =========================================================
   Teaching
   ========================================================= */

.teach-card {
  position: relative;
  padding: 2.6rem 0 1.5rem;
  margin: 0;
  border: 0;
  border-bottom: 1px solid var(--rule);
  border-radius: 0;
  background: none;
}
.teach-card p { margin: 0; color: var(--ink-2); }
.teach-card strong {
  display: block;
  font-family: var(--display);
  font-weight: 400;
  font-size: clamp(1.45rem, 2.5vw, 1.9rem);
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--ink);
  margin-bottom: 0.4rem;
}
.teach-card br { display: none; }
.teach-card .pill-term {
  position: absolute;
  top: 1.35rem;
  left: 0;
  margin: 0;
  color: var(--accent);
}
.teach-card .pill-term::before { background: currentColor; }

/* =========================================================
   Wide screens: label column
   ========================================================= */

@media (min-width: 860px) {
  .paper-card {
    grid-template-columns: var(--label-col) minmax(0, 1fr);
    column-gap: 2rem;
  }
  .paper-card > *,
  .paper-head > * { grid-column: 2; }
  .paper-head > h3 { grid-row: 1; }
  .paper-head > p { grid-column: 1; grid-row: 1; margin: 0; padding-top: 0.75rem; }

  .teach-card { padding: 1.9rem 0 1.9rem calc(var(--label-col) + 2rem); }
  .teach-card .pill-term { top: 2.55rem; }
}

/* =========================================================
   Footer
   ========================================================= */

.nav-footer {
  display: flex !important;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.4rem 2rem;
  max-width: var(--wrap) !important;
  min-height: 0;
  margin: 0 auto !important;
  padding: 1.6rem var(--gutter) 2.25rem !important;
  background: transparent !important;
  border-top: 1px solid var(--rule);
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.nav-footer > div {
  flex: 0 1 auto !important;
  text-align: left !important;
  margin: 0 !important;
  padding: 0 !important;
  min-height: 0 !important;
  order: 0 !important;
}
.nav-footer p { margin: 0; }
.nav-footer a { color: var(--ink-2); }

@media (max-width: 767.98px) {
  .nav-footer { flex-direction: column; align-items: flex-start; }
}

/* =========================================================
   Motion
   ========================================================= */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; }
}