/* Erie for the web: Bauhaus geometry on Lake Erie colors.
   Bootstrap variables live in theme/erie-light.scss and theme/erie-dark.scss;
   everything specific to this site is here. */

/* ---- Fonts (self-hosted in files/fonts) ---- */

@font-face {
  font-family: "Latin Modern Roman";
  src: url("files/fonts/LM-regular.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Latin Modern Roman";
  src: url("files/fonts/LM-italic.woff2") format("woff2");
  font-weight: 400;
  font-style: italic;
  font-display: swap;
}
@font-face {
  font-family: "Latin Modern Roman";
  src: url("files/fonts/LM-bold.woff2") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Latin Modern Roman";
  src: url("files/fonts/LM-bold-italic.woff2") format("woff2");
  font-weight: 700;
  font-style: italic;
  font-display: swap;
}
@font-face {
  font-family: "Jost";
  src: url("files/fonts/jost-latin-wght-normal.woff2") format("woff2");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Jost";
  src: url("files/fonts/jost-latin-wght-italic.woff2") format("woff2");
  font-weight: 100 900;
  font-style: italic;
  font-display: swap;
}

/* ---- Tokens ---- */

:root {
  --sans: "Jost", "Futura", "Century Gothic", sans-serif;

  /* desktop grid: section headings in a left rail, content beside them */
  --rail: 11rem;
  --rail-gap: 3rem;

  --lake: #054F50;      /* erie blue */
  --sky: #CCE5E6;       /* erie sky */
  --sunset: #E8501F;    /* Lake Erie sunset, Browns orange */
  --sand: #F2B23A;      /* beach sand, Bauhaus yellow */
  --ink: #000000;
  --muted: #4A5A5A;
  --rule: #D5E3E3;

  /* the home-page composition */
  --art-sky: var(--sky);
  --art-sky-mid: #DCE6D8;
  --art-sky-low: #EDE2BE;
  --art-sky-glow: #F5D39A;
  --art-gull: #FFFFFF;
  --art-gull-line: #000000;  /* a hairline so white wings read on the pale sky */
  --art-lake: #3E8E8F;
  --art-shallows: #6DB0AF;
  --art-foam: #FFFFFF;
  --art-wet: #DDA03A;
  --art-beach: var(--sand);
  --art-stone: #857C6E;
  --art-stone-dark: #6E6659;
  --art-house: #FFFFFF;
  --art-window: #2B4545;
  --art-door: #1F4A3C;
}

body.quarto-dark {
  --lake: #8FCFD0;
  --sky: #12494A;
  --ink: #E7F0F0;
  --muted: #A9C2C2;
  --rule: #1B4F50;

  --art-sky: #1D5A5B;
  --art-sky-mid: #235A58;
  --art-sky-low: #335C51;
  --art-sky-glow: #5C5A40;
  --art-gull: #CFE3E3;
  --art-gull-line: transparent;
  --art-lake: #2F7C7D;
  --art-shallows: #4E9696;
  --art-foam: #CFE3E3;
  --art-wet: #B58428;
  --art-beach: #C8922F;
  --art-stone: #5F5A50;
  --art-stone-dark: #4E493F;
  --art-house: #E7F0F0;
  --art-window: #1B3535;
  --art-door: #163A2F;
}

/* ---- Base type ---- */

body {
  font-kerning: normal;
  font-variant-ligatures: common-ligatures;
}

h1, h2, h3, h4,
.navbar, .nav-link, .nav-footer,
.entries dt, .pub-links, .hero-role {
  font-family: var(--sans);
}

main a,
.nav-footer a {
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

main a:hover {
  text-decoration-thickness: 2px;
}

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

/* Section headings: the erie frame title, a short lake-blue rule beneath */

main h2 {
  font-size: 1.333rem;
  font-weight: 600;
  margin-top: 2.75rem;
  margin-bottom: 1.25rem;
  padding-bottom: 0;
  border-bottom: none;
}

main h2::after {
  content: "";
  display: block;
  width: 2.5em;
  height: 2px;
  margin-top: 0.35em;
  background: var(--lake);
}

/* ---- Navbar ---- */

.navbar {
  padding-top: 0.9rem;
  padding-bottom: 0.9rem;
}

.navbar-title {
  font-weight: 600;
  font-size: 1.05rem;
  letter-spacing: 0.005em;
}

/* the mark: icosahedron (Research), stella octangula (Teaching), cube (CV) */
.navbar-brand::before {
  content: "";
  display: inline-block;
  width: 2.9rem;
  height: 0.87rem;
  margin-right: 0.7rem;
  background: url("files/mark.svg") no-repeat left center / contain;
}

body.quarto-dark .navbar-brand::before {
  background-image: url("files/mark-dark.svg");
}

@media (max-width: 419.98px) {
  .navbar-brand::before {
    display: none;
  }
}

.navbar .nav-link {
  font-weight: 500;
  font-size: 0.889rem;
}

.navbar .nav-link.active {
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 0.4em;
}

/* ---- Page titles, each with its shape ---- */

#title-block-header {
  margin-bottom: 2rem;
}

#title-block-header .title {
  font-size: 2.667rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.1;
}

#title-block-header .title::before {
  content: "";
  display: inline-block;
  width: 0.66em;
  height: 0.66em;
  margin-right: 0.28em;
  vertical-align: -0.04em;
  background: no-repeat center / contain;
}

.page-research #title-block-header .title::before {
  background-image: url("files/poly-research.svg");
}

.page-teaching #title-block-header .title::before {
  background-image: url("files/poly-teaching.svg");
}

.page-cv #title-block-header .title::before {
  background-image: url("files/poly-cv.svg");
}

body.quarto-dark.page-cv #title-block-header .title::before {
  background-image: url("files/poly-cv-dark.svg");
}

/* ---- Home ---- */

/* the composition runs as a banner under the navbar; the portrait sits in the
   left rail beside the name, where the section headings hang further down */
.page-about #quarto-content > main.content {
  margin-top: 0;
  padding-top: 0;
}

.scene {
  position: relative;
  margin: 0.75rem 0 2.25rem;
}

.scene svg {
  display: block;
  width: 100%;
  height: auto;
}

.hero {
  display: grid;
  grid-template-columns: 9rem minmax(0, 1fr);
  column-gap: 2rem;
  align-items: start;
  margin: 0 0 2.75rem;
}

.hero-photo img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1;
  object-fit: cover;
}

.hero-name {
  font-family: var(--sans);
  font-size: clamp(2.667rem, 6vw, 4.667rem);
  font-weight: 700;
  line-height: 0.98;
  letter-spacing: -0.02em;
  margin: 0;
}

.hero-name::after {
  content: "";
  display: block;
  width: 1.1em;
  height: 4px;
  margin: 0.32em 0 0.4em;
  background: var(--lake);
}

.hero-role {
  font-size: 1.167rem;
  font-weight: 400;
  line-height: 1.35;
  margin: 0;
}

/* sunrise: the sky steps down through flat bands to a warm glow at the horizon */
.art-sky { fill: var(--art-sky); }
.art-sky-mid { fill: var(--art-sky-mid); }
.art-sky-low { fill: var(--art-sky-low); }
.art-sky-glow { fill: var(--art-sky-glow); }
.art-lake { fill: var(--art-lake); }
.art-sun,
.art-glint { fill: var(--sunset); }
.art-gull {
  fill: var(--art-gull);
  stroke: var(--art-gull-line);
  stroke-width: 0.5;
  stroke-linejoin: round;
  paint-order: stroke;
}
.art-shallows { fill: var(--art-shallows); }
.art-foam { fill: var(--art-foam); }
.art-wet { fill: var(--art-wet); }
.art-beach { fill: var(--art-beach); }

/* the Fairport Harbor West Breakwater Light, seen from Headlands Beach */
.art-stone { fill: var(--art-stone); }
.art-stone-dark { fill: var(--art-stone-dark); }
.art-house { fill: var(--art-house); }
.art-roof { fill: #C8352B; }
.art-window { fill: var(--art-window); }
.art-door { fill: var(--art-door); }
.art-lamp { fill: #F7D77E; }

/* piping plovers, after Charley Harper: gray-sand back, white below,
   black bands, orange bill and legs; chicks speckled on top */
.art-back { fill: #CFC5B3; }
.art-wing { fill: #B3A68E; }
.art-belly { fill: #FFFFFF; }
.art-ink { fill: #000000; }
.art-bill,
.art-leg { fill: var(--sunset); }
.art-chick-leg { fill: #EE8A3A; }
.art-chick-cap { fill: #CDBDA2; }
.art-speck { fill: #7A6A55; }
.art-reflection { opacity: 0.3; }

/* motion, on a loop: the sun rises and sets over the lake, one plover walks the
   waterline and back, and the family on the left pecks and hops. Visitors who
   prefer reduced motion get a still picture; everyone else gets a pause button. */
@media (prefers-reduced-motion: no-preference) {
  .art-sun {
    animation: sun-cycle 24s ease-in-out infinite;
  }
  .art-glint {
    transform-box: fill-box;
    transform-origin: center;
    animation: glint-cycle 24s ease-in-out infinite;
  }
  .art-glint:nth-of-type(2) { animation-delay: 0.2s; }
  .art-glint:nth-of-type(3) { animation-delay: 0.4s; }
  .art-runner {
    animation: patrol 14s linear infinite;
  }
  .art-runner-turn {
    transform-box: fill-box;
    transform-origin: center;
    animation: turn 14s step-end infinite;
  }
  .art-bob {
    transform-box: fill-box;
    transform-origin: 60% 100%;
    animation: peck 7s ease-in-out 1s infinite;
  }
  .art-hop {
    animation: hop 4.5s ease-in-out infinite;
  }
  .art-gulls {
    animation: glide 40s ease-in-out infinite alternate;
  }
}

@keyframes glide {
  from { transform: translateX(0); }
  to { transform: translateX(-50px); }
}

.art-paused * {
  animation-play-state: paused !important;
}

@keyframes sun-cycle {
  0%, 4% { transform: translateY(60px); }
  22%, 78% { transform: translateY(0); }
  96%, 100% { transform: translateY(60px); }
}

@keyframes glint-cycle {
  0%, 12% { transform: scaleX(0); }
  26%, 74% { transform: scaleX(1); }
  88%, 100% { transform: scaleX(0); }
}

/* run, stop, run along the waterline; pause; turn; run back */
@keyframes patrol {
  0% { transform: translateX(180px); animation-timing-function: cubic-bezier(0.3, 0, 0.2, 1); }
  12% { transform: translateX(117px); }
  20% { transform: translateX(117px); animation-timing-function: cubic-bezier(0.3, 0, 0.2, 1); }
  32% { transform: translateX(45px); }
  38% { transform: translateX(45px); animation-timing-function: cubic-bezier(0.3, 0, 0.2, 1); }
  46% { transform: translateX(0); }
  50% { transform: translateX(0); animation-timing-function: cubic-bezier(0.3, 0, 0.2, 1); }
  62% { transform: translateX(68px); }
  70% { transform: translateX(68px); animation-timing-function: cubic-bezier(0.3, 0, 0.2, 1); }
  82% { transform: translateX(138px); }
  88% { transform: translateX(138px); animation-timing-function: cubic-bezier(0.3, 0, 0.2, 1); }
  96%, 100% { transform: translateX(180px); }
}

@keyframes turn {
  0% { transform: scaleX(1); }
  50% { transform: scaleX(-1); }
  100% { transform: scaleX(1); }
}

@keyframes peck {
  0%, 80%, 100% { transform: rotate(0deg); }
  86%, 92% { transform: rotate(12deg); }
}

@keyframes hop {
  0%, 70%, 84%, 100% { transform: translateY(0); }
  77%, 91% { transform: translateY(-5px); }
}

/* pause / play the scene. Hidden from view; it exists for keyboard users
   and screen readers who want the motion stopped, and appears only when it
   receives focus by tabbing. */
.art-toggle {
  position: absolute;
  opacity: 0;
  pointer-events: none;
  right: 0.5rem;
  bottom: 0.5rem;
  width: 1.9rem;
  height: 1.9rem;
  padding: 0;
  border: none;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.85);
  cursor: pointer;
}

.art-toggle::before {
  content: "";
  position: absolute;
  inset: 0;
  margin: auto;
  width: 0.62rem;
  height: 0.7rem;
  background: linear-gradient(to right, #000 0 35%, transparent 35% 65%, #000 65% 100%);
}

.art-toggle:focus-visible {
  opacity: 1;
  pointer-events: auto;
}

.art-toggle[aria-pressed="true"]::before {
  width: 0.62rem;
  background: #000;
  clip-path: polygon(10% 0, 100% 50%, 10% 100%);
}

@media (prefers-reduced-motion: reduce) {
  .art-toggle {
    display: none;
  }
}

@media (max-width: 767.98px) {
  /* on phones the banner is cropped to its middle: lighthouse, runner, sun */
  .scene {
    aspect-ratio: 2 / 1;
    margin: 0.5rem 0 1.75rem;
  }
  .scene svg {
    height: 100%;
  }
}

@media (max-width: 575.98px) {
  .hero {
    grid-template-columns: 1fr;
    row-gap: 1.25rem;
  }
  .hero-photo {
    width: 8.5rem;
  }
}

.contact {
  list-style: none;
  padding: 0;
}

.contact li {
  display: grid;
  grid-template-columns: 7rem minmax(0, 1fr);
  column-gap: 1.75rem;
}

.contact .label {
  font-family: var(--sans);
  font-weight: 500;
  font-size: 0.889rem;
  color: var(--lake);
  padding-top: 0.18rem;
}

/* ---- Dated entries (Research, Teaching, CV) ---- */
/* write them as Markdown definition lists inside ::: {.entries} */

.entries dl {
  display: grid;
  grid-template-columns: 7rem minmax(0, 1fr);
  column-gap: 1.75rem;
  row-gap: 1.1rem;
  margin: 0;
}

.entries dt {
  grid-column: 1;
  font-weight: 500;
  font-size: 0.889rem;
  color: var(--lake);
  font-variant-numeric: lining-nums tabular-nums;
  padding-top: 0.18rem;
  line-height: 1.5;
}

.entries dd {
  grid-column: 2;
  margin: 0;
  text-wrap: pretty;
}

.entries dd p {
  margin: 0;
}

.entries dd p + p,
.entries dd .pub-links {
  margin-top: 0.35rem;
}

/* second line of an entry (institution, program): quieter than the title */
.entries .detail {
  color: var(--muted);
  font-size: 0.944rem;
}

/* CV links read as plain text; the underline appears only on hover or focus */
.page-cv .entries a {
  color: inherit;
  text-decoration: none;
}

.page-cv .entries a:hover,
.page-cv .entries a:focus-visible {
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

/* keep a proper noun on one line rather than stranding its last word */
.nowrap {
  white-space: nowrap;
}

@media (max-width: 575.98px) {
  .entries dl,
  .contact li {
    grid-template-columns: 1fr;
    row-gap: 0;
  }
  .entries dd {
    grid-column: 1;
    margin-bottom: 1.1rem;
  }
  .contact li {
    margin-bottom: 0.6rem;
  }
}

/* ---- Research: papers, talks, software ---- */

.pub {
  margin-bottom: 1.5rem;
}

.pub p {
  margin: 0;
}

.pub .pub-links,
.pub details {
  margin-top: 0.3rem;
}

.pub details > summary {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  font-family: var(--sans);
  font-weight: 500;
  font-size: 0.889rem;
  color: var(--lake);
  cursor: pointer;
  list-style: none;
}

.pub details > summary::-webkit-details-marker {
  display: none;
}

.pub details > summary::before {
  content: "";
  width: 0.5em;
  height: 0.5em;
  background: currentColor;
  clip-path: polygon(0 0, 100% 50%, 0 100%);
  transition: transform 0.15s ease;
}

.pub details[open] > summary::before {
  transform: rotate(90deg);
}

.pub details > summary:hover {
  text-decoration: underline;
  text-underline-offset: 0.18em;
}

.pub details > p {
  margin: 0.5rem 0 0.25rem;
  padding-left: 0.9rem;
  border-left: 2px solid var(--rule);
  font-size: 0.944rem;
}

@media (prefers-reduced-motion: reduce) {
  .pub details > summary::before {
    transition: none;
  }
}

.pkg {
  display: grid;
  grid-template-columns: 5.5rem minmax(0, 1fr);
  column-gap: 1.5rem;
  align-items: start;
  margin-bottom: 1.5rem;
}

.pkg > p {
  margin: 0;
}

.pkg-logo {
  display: block;
  width: 100%;
  height: auto;
}

.pkg-body p {
  margin: 0;
}

.pkg-body p + p {
  margin-top: 0.5rem;
}

.pkg-badge {
  height: 20px;
  margin-left: 0.35rem;
  vertical-align: -4px;
}

@media (max-width: 575.98px) {
  .pkg {
    grid-template-columns: 4rem minmax(0, 1fr);
    column-gap: 1rem;
  }
}

/* co-author lines: present but quieter than the title and venue */
.coauthors {
  color: var(--muted);
}

.pub-links {
  font-size: 0.889rem;
}

.pub-links a {
  margin-right: 1rem;
}

.lede {
  color: var(--muted);
}

/* ---- Tablets: one column, kept to a readable width ---- */

@media (min-width: 576px) and (max-width: 991.98px) {
  main.content {
    width: 100%;
    max-width: 38rem;
    justify-self: center;
  }
}

/* ---- Wide screens: section headings hang in a left rail ---- */

@media (min-width: 992px) {
  main.content > section.level2 {
    display: grid;
    grid-template-columns: var(--rail) minmax(0, 1fr);
    column-gap: var(--rail-gap);
    align-items: start;
    margin-top: 3rem;
  }

  main.content > section.level2 > h2 {
    grid-column: 1;
    grid-row: 1;
    margin: 0;
    font-size: 1.167rem;
    line-height: 1.4;
    padding-top: 0.12rem;
  }

  main.content > section.level2 > :not(h2) {
    grid-column: 2;
  }

  /* intro text lines up with the content column */
  main.content > p,
  main.content > .lede,
  main.content > .todo {
    margin-left: calc(var(--rail) + var(--rail-gap));
  }

  .hero {
    grid-template-columns: var(--rail) minmax(0, 1fr);
    column-gap: var(--rail-gap);
    margin-bottom: 3.5rem;
  }
}

/* ---- Footer ---- */

.nav-footer {
  font-size: 0.778rem;
}

/* ---- Notes to self while drafting; delete each box once done ---- */

.todo {
  border-left: 4px solid var(--sunset);
  padding: 0.5rem 0.75rem;
  background: color-mix(in srgb, var(--sunset) 8%, transparent);
  margin: 1.25rem 0;
  font-size: 0.889rem;
}

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