/* pierrelucbacon.com
   Engineering-pad grid, blue-black ink, one red pencil mark. */

:root {
  --paper: #fcfdfd;
  --pad: #ecf1f4;
  --grid: #dbe4ea;
  --grid-major: #c6d4de;
  --ink: #172430;
  --graphite: #50606c;
  --rule: #d5dee5;
  --link: #1f4e79;
  --pencil: #a8323a;
  --field: #a3b5c2;
  --focus: #1f4e79;
  --ice: #ffffff;

  --serif: "Newsreader", "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --sans: "IBM Plex Sans", "Helvetica Neue", Arial, sans-serif;

  --measure: 40rem;
  --page: 70rem;
  --gutter: 1.5rem;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #0f161c;
    --pad: #131e27;
    --grid: #1a2833;
    --grid-major: #22343f;
    --ink: #e2e9ee;
    --graphite: #9cadba;
    --rule: #25343f;
    --link: #9dc4e8;
    --pencil: #e5888d;
    --field: #3c5163;
    --focus: #9dc4e8;
    --ice: #33444f;
    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
    --paper: #0f161c;
    --pad: #131e27;
    --grid: #1a2833;
    --grid-major: #22343f;
    --ink: #e2e9ee;
    --graphite: #9cadba;
    --rule: #25343f;
    --link: #9dc4e8;
    --pencil: #e5888d;
    --field: #3c5163;
    --focus: #9dc4e8;
    --ice: #33444f;
    color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-padding-top: 1rem;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 1.1875rem;          /* 19px */
  line-height: 1.55;
  font-optical-sizing: auto;
  font-variant-numeric: oldstyle-nums proportional-nums;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--link);
  text-decoration-line: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
  text-decoration-color: color-mix(in srgb, currentColor 45%, transparent);
}
a:hover { text-decoration-color: currentColor; }
:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
  border-radius: 2px;
}

p { margin: 0 0 1em; }

.wrap {
  max-width: var(--page);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.skip {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--ink);
  color: var(--paper);
  padding: 0.5rem 0.75rem;
  font-family: var(--sans);
  font-size: 0.9375rem;
  z-index: 10;
}
.skip:focus { left: 1rem; top: 1rem; }

/* ------------------------------------------------------------ masthead */

.masthead {
  border-bottom: 1px solid var(--grid-major);
  background: var(--paper);
}
.masthead .wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem 2rem;
  padding-top: 1.1rem;
  padding-bottom: 1rem;
}
.site-name {
  font-family: var(--serif);
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: -0.005em;
}
.site-nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.6rem;
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--sans);
  font-size: 0.9375rem;
}
.site-nav a {
  color: var(--ink);
  text-decoration: none;
  padding: 0.2rem 0;
  border-bottom: 1.5px solid transparent;
}
.site-nav a:hover { border-bottom-color: var(--grid-major); }
.site-nav a[aria-current="page"] { border-bottom-color: var(--ink); }

/* ------------------------------------------------------------ the pad */

.pad {
  background-color: var(--pad);
  background-image:
    linear-gradient(var(--grid-major) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-major) 1px, transparent 1px),
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 120px 120px, 120px 120px, 24px 24px, 24px 24px;
  background-position: -1px -1px;
  border-bottom: 1px solid var(--grid-major);
}

/* home hero */
.hero .wrap {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(16rem, 27rem);
  gap: 2rem 4rem;
  align-items: center;
  padding-top: 3.5rem;
  padding-bottom: 3.5rem;
}
.hero-id {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-bottom: 1.75rem;
}
.hero-id img {
  width: 7.5rem;
  height: 7.5rem;
  object-fit: cover;
  border: 1px solid var(--grid-major);
  background: var(--pad);
  flex: none;
}
.hero h1 {
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(2.6rem, 5.4vw, 4.25rem);
  line-height: 1;
  letter-spacing: -0.02em;
  margin: 0 0 0.6rem;
}
.role {
  font-family: var(--sans);
  font-size: 1rem;
  line-height: 1.45;
  color: var(--graphite);
  margin: 0;
}
.bio {
  max-width: var(--measure);
  font-size: 1.25rem;
  line-height: 1.6;
}
.bio p:last-child { margin-bottom: 0; }

.elsewhere {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.5rem;
  list-style: none;
  padding: 0;
  margin: 1.6rem 0 0;
  font-family: var(--sans);
  font-size: 0.9375rem;
}

/* hero figures */
.portrait-fig { margin: 0; }
.portrait {
  width: 100%;
  height: auto;
  overflow: visible;
}

.portrait-fig figcaption {
  font-family: var(--sans);
  font-size: 0.8125rem;
  line-height: 1.45;
  color: var(--graphite);
  margin-top: 0.75rem;
  max-width: 26rem;
  min-height: 4.4em;
}
.hero-canvas canvas { display: block; width: 100%; }
.hero-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.35rem 1.1rem;
  margin-top: 0.9rem;
  font-family: var(--sans);
  font-size: 0.8125rem;
}
.hero-controls button {
  font: inherit;
  color: var(--graphite);
  background: none;
  border: 0;
  border-bottom: 1.5px solid transparent;
  padding: 0.15rem 0;
  cursor: pointer;
}
.hero-controls button:hover { color: var(--ink); border-bottom-color: var(--grid-major); }
.hero-controls button[aria-pressed="true"] { color: var(--ink); border-bottom-color: var(--ink); }
.hero-controls .hero-replay { color: var(--link); margin-left: auto; }

/* shared drawing styles */
.portrait .bk-label { font-family: var(--serif); font-style: italic; font-size: 15px; fill: var(--graphite); }
.portrait .bk-axis { fill: none; stroke: var(--graphite); stroke-width: 1; opacity: 0.6; }
.portrait .bk-hatch-line { stroke: var(--graphite); stroke-width: 1; opacity: 0.55; }

/* path integral passages */
.bk .bk-wall { fill: url(#bk-hatch); stroke: var(--graphite); stroke-width: 1; }
.bk .bk-sample { fill: none; stroke: var(--ink); stroke-width: 1; opacity: 0.62; stroke-linejoin: round; }
.bk .bk-dead { stroke-width: 0.8; opacity: 0.17; }
.bk .bk-hit { fill: var(--graphite); opacity: 0.45; }
.bk .bk-past { fill: none; stroke: var(--ink); stroke-width: 2.2; stroke-linejoin: round; stroke-linecap: round; }
.bk .bk-best { fill: none; stroke: var(--pencil); stroke-width: 2.4; stroke-linejoin: round; stroke-linecap: round; }
.bk .bk-now { fill: var(--ink); stroke: var(--pad); stroke-width: 2; }

/* sea ice */
.ic .ic-floe { fill: var(--ice); stroke: var(--ink); stroke-width: 0.7; stroke-linejoin: round; vector-effect: non-scaling-stroke; }
.ic .ic-wall { fill: none; stroke: var(--ink); stroke-width: 1.2; vector-effect: non-scaling-stroke; }
.ic .ic-route-ahead { fill: none; stroke: var(--graphite); stroke-width: 1; stroke-dasharray: 3 4; opacity: 0.7; vector-effect: non-scaling-stroke; }
.ic .ic-plan { fill: none; stroke: var(--pencil); stroke-width: 2.4; stroke-linecap: round; stroke-linejoin: round; vector-effect: non-scaling-stroke; }
.ic .ic-ship path { fill: var(--ink); stroke: none; }
.ic .ic-window { fill: none; stroke: var(--pencil); stroke-width: 1.2; }
.ic .ic-zoom-bg { fill: var(--pad); }
.ic .ic-frame { fill: none; stroke: var(--grid-major); stroke-width: 1; }
.ic .ic-scale-bg { fill: var(--pad); opacity: 0.9; }

/* refrigerants */
.rf .rf-tick { font-family: var(--sans); font-size: 11px; fill: var(--graphite); }
.rf .rf-dome { fill: none; stroke: var(--ink); stroke-width: 1.2; }
.rf .rf-cycle { fill: none; stroke: var(--graphite); stroke-width: 1.2; opacity: 0.7; stroke-linejoin: round; }
.rf .rf-state { fill: var(--graphite); }
.rf .rf-name { font-family: var(--serif); font-style: italic; font-size: 13px; fill: var(--graphite); }
.rf .rf-card { display: none; }
.rf .rf-fluid { transition: opacity 0.6s ease; }
.rf .rf-fluid.pending { opacity: 0; }
.rf .rf-fluid.done .rf-dome { opacity: 0.35; }
.rf .rf-fluid.done .rf-cycle { opacity: 0.35; }
.rf .rf-fluid.on .rf-card { display: inline; }
.rf .rf-fluid.on .rf-cycle { stroke: var(--pencil); stroke-width: 2.4; opacity: 1; }
.rf .rf-fluid.on .rf-state { fill: var(--pencil); }
.rf .rf-fluid.on .rf-name { fill: var(--ink); }
.rf .rf-mol path { fill: none; stroke: var(--ink); stroke-width: 1.4; stroke-linecap: round; }
.rf .rf-atom { font-family: var(--sans); font-size: 12px; fill: var(--ink); }
.rf .rf-card-name { font-family: var(--serif); font-size: 16px; fill: var(--ink); }
.rf .rf-card-fig { font-family: var(--sans); font-size: 12.5px; fill: var(--graphite); }
.rf .rf-parcel { fill: var(--pencil); stroke: var(--pad); stroke-width: 2; }

@media (prefers-reduced-motion: no-preference) {
  .js .bk-passages .bk-past { stroke-dasharray: 1; stroke-dashoffset: 1; animation: draw 0.8s ease-out 0.1s forwards; }
  .js .bk-passages .bk-sample {
    stroke-dasharray: 1; stroke-dashoffset: 1;
    animation: draw 1.6s cubic-bezier(.35, .1, .3, 1) forwards;
    animation-delay: calc(0.9s + var(--i) * 18ms);
  }
  .js .bk-passages .bk-hit { opacity: 0; animation: hitin 0.3s ease-out forwards; animation-delay: calc(2.4s + var(--i) * 18ms); }
  .js .bk-passages .bk-best { stroke-dasharray: 1; stroke-dashoffset: 1; animation: draw 1.6s ease-in-out 3.4s forwards; }
  .rf .rf-fluid.drawing .rf-dome { stroke-dasharray: 1; stroke-dashoffset: 1; animation: draw 1.1s ease-out forwards; }
  .rf .rf-fluid.drawing .rf-cycle { stroke-dasharray: 1; stroke-dashoffset: 1; animation: draw 0.9s ease-in-out 0.8s forwards; }
}
@keyframes draw { to { stroke-dashoffset: 0; } }
@keyframes hitin { from { opacity: 0; } to { opacity: 0.45; } }

/* subpage header */
.page-head .wrap {
  padding-top: 2.75rem;
  padding-bottom: 2.5rem;
}
.page-head h1 {
  font-weight: 300;
  font-size: clamp(2.4rem, 4.6vw, 3.5rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 0 0 0.75rem;
}
.page-head p {
  max-width: var(--measure);
  font-size: 1.25rem;
  margin: 0;
}

/* ------------------------------------------------------------ sections */

main { display: block; }

.section {
  padding: 3.5rem 0 1rem;
}
.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem 2rem;
  margin-bottom: 1.5rem;
}
.section h2 {
  font-weight: 400;
  font-size: 2rem;
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin: 0;
}

/* margin-label rows: years, group sections, teaching sections */
.row {
  display: grid;
  grid-template-columns: 9rem minmax(0, 1fr);
  gap: 0 2.5rem;
  border-top: 1px solid var(--rule);
  padding: 1.6rem 0 0.6rem;
}
.row > .label {
  margin: 0;
  font-weight: 400;
  font-size: 1.5rem;
  line-height: 1.2;
  color: var(--graphite);
  font-variant-numeric: lining-nums;
  align-self: start;
  position: sticky;
  top: 1rem;
}
.row > .label.small {
  font-size: 1.1875rem;
  line-height: 1.35;
  padding-top: 0.15rem;
}

/* ------------------------------------------------------------ books */

.books {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem 3rem;
}
.book h3 {
  font-weight: 500;
  font-size: 1.375rem;
  line-height: 1.25;
  margin: 0 0 0.3rem;
}
.book h3 a { color: var(--ink); text-decoration-color: var(--grid-major); }
.book h3 a:hover { text-decoration-color: currentColor; }
.book .sub {
  font-style: italic;
  color: var(--graphite);
  margin: 0 0 0.5rem;
}
.book p { max-width: 34rem; }
.meta {
  font-family: var(--sans);
  font-size: 0.875rem;
  line-height: 1.5;
  color: var(--graphite);
}

/* ------------------------------------------------------------ publications */

.filter {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--sans);
  font-size: 0.875rem;
  color: var(--graphite);
}
.filter input {
  font: inherit;
  font-size: 0.9375rem;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--grid-major);
  border-radius: 3px;
  padding: 0.45rem 0.65rem;
  width: 17rem;
  max-width: 100%;
}
.filter input::placeholder { color: var(--graphite); opacity: 0.8; }
.filter input:focus-visible { outline-offset: 1px; }

.pubs {
  list-style: none;
  margin: 0;
  padding: 0;
  max-width: 46rem;
}
.pub { margin: 0 0 1.35rem; }
.pub-title {
  display: block;
  font-size: 1.1875rem;
  font-weight: 500;
  line-height: 1.35;
  color: var(--ink);
}
a.pub-title {
  text-decoration-color: var(--grid-major);
}
a.pub-title:hover { text-decoration-color: currentColor; }
.pub-authors {
  margin: 0.15rem 0 0.1rem;
  font-size: 1.0625rem;
  line-height: 1.45;
  color: var(--graphite);
}
.pub-authors .me { color: var(--ink); font-weight: 500; }
.pub-venue {
  margin: 0;
  font-family: var(--sans);
  font-size: 0.875rem;
  line-height: 1.5;
  color: var(--graphite);
}
.pub-venue .award { color: var(--pencil); font-weight: 600; margin-left: 0.35rem; }
.pub-venue .extra { margin-left: 0.75rem; }
.pub-venue .extra a { color: var(--link); }

.no-match {
  font-family: var(--sans);
  font-size: 0.9375rem;
  color: var(--graphite);
  padding: 1rem 0 2rem;
  border-top: 1px solid var(--rule);
}

/* ------------------------------------------------------------ group */

.people {
  list-style: none;
  margin: 0;
  padding: 0;
  columns: 2 16rem;
  column-gap: 2.5rem;
}
.people li {
  break-inside: avoid;
  margin: 0 0 0.9rem;
  line-height: 1.35;
}
.people .name, .theses .name { color: var(--ink); }
.people a.name, .theses a.name { text-decoration-color: var(--grid-major); }
.people a.name:hover, .theses a.name:hover { text-decoration-color: currentColor; }
.people .name { font-size: 1.1875rem; }
.people .note {
  display: block;
  font-family: var(--sans);
  font-size: 0.875rem;
  color: var(--graphite);
  margin-top: 0.1rem;
}

.theses {
  list-style: none;
  margin: 0;
  padding: 0;
  max-width: 46rem;
}
.theses li { margin: 0 0 1.25rem; }
.theses .who {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0 0.75rem;
}
.theses .name { font-size: 1.1875rem; }
.theses .degree {
  font-family: var(--sans);
  font-size: 0.875rem;
  color: var(--graphite);
}
.theses .title {
  display: block;
  font-style: italic;
  line-height: 1.4;
  margin-top: 0.1rem;
}
.theses .note {
  display: block;
  font-family: var(--sans);
  font-size: 0.875rem;
  color: var(--graphite);
  margin-top: 0.15rem;
}

/* ------------------------------------------------------------ teaching / contact */

.entries { list-style: none; margin: 0; padding: 0; max-width: 46rem; }
.entries li { margin: 0 0 1.4rem; }
.entries h3 {
  font-size: 1.25rem;
  font-weight: 500;
  line-height: 1.3;
  margin: 0 0 0.2rem;
}
.entries p { margin: 0.2rem 0 0; }
.prose { max-width: var(--measure); }
.prose p { margin-bottom: 0.9em; }
address { font-style: normal; }
address + .meta { margin-top: 0.6rem; }

/* ------------------------------------------------------------ footer */

.site-foot {
  margin-top: 4rem;
  border-top: 1px solid var(--grid-major);
  background: var(--pad);
}
.site-foot .wrap {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.75rem 2rem;
  padding-top: 1.5rem;
  padding-bottom: 2rem;
  font-family: var(--sans);
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--graphite);
}
.site-foot p { margin: 0; }

/* ------------------------------------------------------------ small screens */

@media (max-width: 52rem) {
  .hero .wrap {
    grid-template-columns: minmax(0, 1fr);
    padding-top: 2.25rem;
    padding-bottom: 2.5rem;
  }
  .portrait-fig { max-width: 22rem; }
  .books { grid-template-columns: minmax(0, 1fr); }
  .row { grid-template-columns: minmax(0, 1fr); padding-top: 1.25rem; }
  .row > .label { position: static; margin-bottom: 0.9rem; }
}

@media (max-width: 34rem) {
  :root { --gutter: 1rem; }
  body { font-size: 1.125rem; }
  .bio { font-size: 1.1875rem; }
  .hero-id { gap: 1rem; }
  .hero-id img { width: 5.25rem; height: 5.25rem; }
  .section { padding-top: 2.75rem; }
  .filter { width: 100%; }
  .filter input { width: 100%; }
  .site-nav ul { gap: 0.25rem 1.1rem; }
}

@media print {
  .pad, .site-foot { background: none; }
  .portrait-fig, .filter, .site-nav, .skip { display: none; }
  .row > .label { position: static; }
}