/* Font loading */
@import url("https://fonts.googleapis.com/css?family=Source+Sans+Pro:300,300italic,400,600,700");
/* Palette and global defaults */
:root {
  color-scheme: light;
  --ink: #39454c;
  --muted: #68777f;
  --accent: #e27689;
  --paper: #f4f5f6;
  --panel: #222629;
  --line: #dce1e3;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 17px/1.6 "Source Sans Pro", sans-serif;
}

a {
  color: #a94b5f;
}

/* Shared notebook navigation */
.research-sidebar {
  position: fixed;
  inset: 0 auto 0 0;
  z-index: 5;
  display: flex;
  width: 17rem;
  flex-direction: column;
  align-items: center;
  padding: 2rem 1.5rem;
  background: var(--panel);
  color: #fff;
  text-align: center;
}

.research-sidebar img {
  width: 5.5rem;
  height: 5.5rem;
  margin-bottom: .8rem;
  border-radius: 50%;
  object-fit: cover;
  object-position: center;
}

.research-sidebar h2 {
  margin: 0;
  color: #fff;
  font-size: 1.15rem;
  font-weight: 600;
}

.research-sidebar p {
  margin: .35rem 0 1.5rem;
  color: rgba(255,255,255,.58);
  font-size: .85rem;
}

.research-sidebar nav {
  width: 100%;
  max-height: calc(100vh - 11rem);
  overflow-y: auto;
}

.research-sidebar nav a {
  display: block;
  padding: .65rem .75rem;
  border-top: 1px solid rgba(255,255,255,.07);
  color: rgba(255,255,255,.72);
  font-size: .92rem;
  text-align: left;
  text-decoration: none;
  transition: color .15s, background .15s;
}

.research-sidebar nav a:hover, .research-sidebar nav a:focus-visible {
  color: #fff;
  background: rgba(255,255,255,.06);
}

.research-sidebar nav a.is-current {
  color: #fff;
  box-shadow: inset 3px 0 var(--accent);
}

.research-sidebar nav a.nav-group {
  margin-top: .55rem;
  border-top-color: rgba(255,255,255,.18);
  color: #fff;
  font-weight: 700;
}

.research-sidebar nav a.project-nav-link {
  padding-left: 1.35rem;
  color: rgba(255,255,255,.62);
  font-size: .86rem;
}

/* Notebook layout and hero */
.research-main {
  min-height: 100vh;
  margin-left: 17rem;
}

.research-wrap {
  width: min(74rem, calc(100% - 4rem));
  margin: 0 auto;
}

.research-hero {
  position: relative;
  display: flex;
  min-height: 22rem;
  align-items: flex-end;
  overflow: hidden;
  padding: 3.75rem 0;
  background: linear-gradient(120deg, rgba(8,12,24,.68), rgba(8,12,24,.42)),
    url("../images/quantum-lab-banner.jpeg") center 48% / cover no-repeat;
  color: #fff;
}

.research-hero .research-wrap {
  position: relative;
}

.research-kicker {
  margin: 0 0 .55rem;
  color: var(--accent);
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .15em;
  text-transform: uppercase;
}

.research-hero h1 {
  max-width: 54rem;
  margin: 0;
  color: #fff;
  font-size: clamp(2.6rem, 6vw, 4.8rem);
  font-weight: 700;
  letter-spacing: -.025em;
  line-height: 1.04;
}

.research-hero .lead {
  max-width: 45rem;
  margin: 1rem 0 0;
  color: rgba(255,255,255,.78);
  font-size: 1.15rem;
  line-height: 1.55;
}

.research-section {
  padding: 3rem 0 4rem;
}

.section-heading {
  margin-bottom: 1.4rem;
}

.section-heading h2 {
  margin: 0;
  color: #39454c;
  font-size: 1.8rem;
  font-weight: 700;
}

.section-heading p {
  margin: .35rem 0 0;
  color: var(--muted);
}

/* Project cards */
.research-project-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.15rem;
}

.research-project-card {
  display: flex;
  min-width: 0;
  min-height: 22rem;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid rgba(34,38,41,.08);
  border-radius: .6rem;
  background: #fff;
  box-shadow: 0 .45rem 1.35rem rgba(30,42,49,.07);
  transition: transform .18s ease, box-shadow .18s ease;
}

.research-project-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 .8rem 1.8rem rgba(30,42,49,.12);
}

.project-card-art {
  display: grid;
  height: 8.5rem;
  place-items: center;
  background: #e9edef;
}

.project-card-art img {
  display: block;
  width: 7rem;
  height: 7rem;
  object-fit: contain;
}

.project-card-copy {
  display: flex;
  flex: 1;
  flex-direction: column;
  align-items: flex-start;
  padding: 1.1rem 1.2rem 1.2rem;
}

.project-card-copy .tag {
  margin: 0;
  color: #a94b5f;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.project-card-copy h3 {
  margin: .45rem 0;
  color: #39454c;
  font-size: 1.22rem;
  font-weight: 700;
  line-height: 1.25;
}

.project-card-copy p {
  margin: 0 0 1rem;
  color: var(--muted);
  font-size: .95rem;
  line-height: 1.5;
}

/* Shared links and buttons */
.project-detail-link, .research-button {
  display: inline-flex;
  min-height: 2.55rem;
  align-items: center;
  justify-content: center;
  gap: .4rem;
  margin-top: auto;
  padding: .55rem .9rem;
  border: 1px solid #52616a;
  border-radius: .32rem;
  background: #52616a;
  color: #fff;
  font-size: .86rem;
  font-weight: 600;
  line-height: 1.2;
  text-decoration: none;
  transition: background .15s, border-color .15s;
}

.project-detail-link:hover, .research-button:hover {
  border-color: #39474f;
  background: #39474f;
  color: #fff;
}

.research-text-link {
  color: #9f4559;
  font-size: .88rem;
}

/* Page footer */
.research-footer {
  padding: 1.35rem 0;
  border-top: 1px solid var(--line);
  color: #839097;
  font-size: .88rem;
}

.research-footer .research-wrap {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
}

/* Project detail pages */
.detail-page {
  padding: 3.5rem 0 4rem;
}

.detail-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(13rem, .8fr);
  align-items: center;
  gap: 2rem;
  padding: 2rem;
  border-radius: .7rem;
  background: linear-gradient(120deg, #263138, #41535d);
  color: #fff;
  box-shadow: 0 .7rem 2rem rgba(30,42,49,.12);
}

.detail-hero h1 {
  margin: .35rem 0 .7rem;
  color: #fff;
  font-size: clamp(2rem, 4.4vw, 3.4rem);
  font-weight: 700;
  letter-spacing: -.025em;
  line-height: 1.08;
}

.detail-hero .lead {
  margin: 0;
  color: rgba(255,255,255,.78);
  font-size: 1.08rem;
  line-height: 1.55;
}

.detail-hero-art {
  display: grid;
  min-height: 13rem;
  place-items: center;
  border: 0;
  border-radius: 0;
  background: transparent;
}

.detail-hero-art img {
  width: min(14rem, 70%);
  max-height: 13rem;
  padding: .55rem;
  border: 1px solid rgba(255,255,255,.09);
  border-radius: 14%;
  background: rgba(255,255,255,.06);
  object-fit: contain;
}

/* Summary panels and project media */
.detail-content {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 1fr);
  align-items: stretch;
  gap: 1.2rem;
  margin-top: 1.2rem;
}

.detail-panel {
  height: 100%;
  padding: 1.4rem 1.5rem;
  border: 1px solid rgba(34,38,41,.08);
  border-radius: .55rem;
  background: #fff;
  box-shadow: 0 .35rem 1rem rgba(30,42,49,.05);
}

.detail-panel h2 {
  margin: 0 0 .6rem;
  color: #39454c;
  font-size: 1.2rem;
  font-weight: 700;
}

.detail-panel p {
  margin: 0 0 .8rem;
  color: var(--muted);
}

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

.detail-media-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .8rem;
  margin-top: 1.2rem;
}

.detail-media-card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: .45rem;
  background: #fff;
}

.detail-media-card img {
  display: block;
  width: 100%;
  height: 13rem;
  object-fit: cover;
  background: #e9edef;
}

.detail-media-card figcaption {
  padding: .6rem .75rem;
  color: var(--muted);
  font-size: .84rem;
}

.detail-evidence {
  margin-top: 2rem;
}

.qep-detail-grid .qep-plot img {
  object-fit: contain;
  padding: .3rem;
  background: #fff;
}

.detail-overview-plot {
  margin: 1.15rem 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: .45rem;
  background: #fff;
}

.detail-overview-plot img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: contain;
}

.detail-overview-plot figcaption {
  padding: .6rem .75rem;
  color: var(--muted);
  font-size: .84rem;
}

/* Full-width optical layout used inside the magnetometer methodology accordion. */
.method-diagram {
  max-width: 48rem;
  margin: 1rem 0 1.25rem;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: .45rem;
  background: #fff;
  justify-self: center;
}

.method-diagram img {
  display: block;
  width: 100%;
  height: auto;
}

.method-diagram figcaption {
  padding: .6rem .75rem;
  color: var(--muted);
  font-size: .84rem;
}

.detail-accordion ul {
  margin: .4rem 0 1rem;
  padding-left: 1.3rem;
}

.detail-accordion li {
  margin: .35rem 0;
}

.detail-qinc-brand {
  display: grid;
  min-height: 5rem;
  place-items: center;
  margin: .5rem 0 1rem;
  padding: .75rem;
  border-radius: .35rem;
  background: #f4f5f6;
}

.detail-qinc-brand img {
  display: block;
  width: min(100%, 15rem);
  max-height: 5rem;
  object-fit: contain;
}

.detail-panel .detail-credit {
  margin-top: 1rem;
  font-size: .86rem;
}

.detail-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .65rem;
  margin-top: 1rem;
}

/* Expandable project details and equations */
.detail-accordions {
  display: grid;
  gap: .7rem;
  margin-top: 1.2rem;
}

.detail-accordion {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: .5rem;
  background: #fff;
  box-shadow: 0 .25rem .8rem rgba(30,42,49,.04);
}

.detail-accordion summary {
  position: relative;
  padding: .85rem 1.1rem;
  color: #39454c;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  list-style: none;
}

.detail-accordion summary::-webkit-details-marker {
  display: none;
}

.detail-accordion summary::after {
  position: absolute;
  right: 1rem;
  content: "+";
  color: #a94b5f;
  font-size: 1.2rem;
  line-height: 1;
}

.detail-accordion[open] summary::after {
  content: "−";
}

.detail-accordion > div {
  padding: 0 1.1rem 1rem;
  color: var(--muted);
}

.detail-accordion p {
  margin: 0;
}

.equation-line {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin: .65rem 0;
  padding: 0;
  border: 0;
  background: transparent;
}

.equation-scroll {
  display: inline-flex;
  flex: 1 1 auto;
  min-width: 0;
  align-items: center;
  justify-content: center;
  gap: .65rem;
  overflow-x: auto;
  color: inherit;
  font: 1.25rem/1.25 Georgia, "Times New Roman", serif;
  white-space: nowrap;
}

.math-italic {
  font-style: italic;
}

.math-frac {
  display: inline-grid;
  grid-template-rows: auto auto;
  justify-items: center;
  vertical-align: middle;
  font-size: .88em;
  line-height: 1.05;
}

.math-frac > span:first-child {
  padding: 0 .12em .08em;
  border-bottom: 1px solid currentColor;
}

.math-frac > span:last-child {
  padding-top: .08em;
}

.math-matrix, .math-vector {
  position: relative;
  display: inline-grid;
  align-items: center;
  padding: .28em .48em;
  line-height: 1.35;
}

.math-matrix {
  grid-template-columns: repeat(3, auto);
  gap: .08em .62em;
}

.math-matrix::before, .math-matrix::after, .math-vector::before, .math-vector::after {
  position: absolute;
  top: 0;
  bottom: 0;
  width: .22em;
  content: "";
}

.math-matrix::before, .math-vector::before {
  left: 0;
  border: 1px solid currentColor;
  border-right: 0;
}

.math-matrix::after, .math-vector::after {
  right: 0;
  border: 1px solid currentColor;
  border-left: 0;
}

.math-vector {
  grid-template-columns: auto;
  gap: .08em;
}

.math-matrix sub, .math-vector sub {
  font-size: .66em;
}

.copy-latex {
  flex: 0 0 auto;
  padding: .38rem .58rem;
  border: 1px solid #bdc6ca;
  border-radius: .3rem;
  background: #fff;
  color: #4b5b64;
  font: 600 .75rem/1.2 "Source Sans Pro", sans-serif;
  cursor: pointer;
}

.copy-latex:hover, .copy-latex:focus-visible {
  border-color: #a94b5f;
  color: #8f3e51;
}

.copy-latex-status {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.research-button.secondary {
  border-color: #bdc6ca;
  background: #fff;
  color: #4b5b64;
}

.research-button.secondary:hover {
  border-color: #84939a;
  background: #edf0f1;
  color: #39474f;
}

/* Responsive layouts */
@media (max-width: 1100px) {
  .research-project-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 780px) {
  .research-sidebar {
    position: relative;
    inset: auto;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 1rem;
    padding: .75rem 1.25rem;
    text-align: left;
  }

  .research-sidebar img {
    width: 3rem;
    height: 3rem;
    margin: 0;
  }

  .research-sidebar > div {
    display: flex;
    align-items: center;
    gap: .7rem;
  }

  .research-sidebar h2 {
    font-size: 1rem;
  }

  .research-sidebar p {
    display: none;
  }

  .research-sidebar nav {
    display: grid;
    width: 100%;
    max-height: 13rem;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    overflow-y: auto;
  }

  .research-sidebar nav a {
    padding: .45rem .65rem;
  }

  .research-sidebar nav a:first-child, .research-sidebar nav a.nav-group {
    grid-column: 1 / -1;
  }

  .research-sidebar nav a.project-nav-link {
    padding-left: .8rem;
  }

  .research-main {
    margin-left: 0;
  }

  .research-wrap {
    width: min(100% - 2rem, 74rem);
  }

  .research-hero {
    min-height: 18rem;
    padding: 2.5rem 0;
  }

  .detail-content {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 540px) {
  .research-sidebar {
    align-items: flex-start;
  }

  .research-sidebar > div {
    min-width: 0;
  }

  .research-sidebar nav a {
    font-size: .82rem;
  }

  .research-sidebar nav {
    align-self: stretch;
    grid-template-columns: 1fr;
  }

  .research-project-grid {
    grid-template-columns: 1fr;
  }

  .research-project-card {
    min-height: 0;
  }

  .detail-hero {
    grid-template-columns: 1fr;
    padding: 1.3rem;
  }

  .detail-hero-art {
    min-height: 9rem;
  }

  .detail-hero-art img {
    max-height: 9rem;
  }

  .detail-media-grid {
    grid-template-columns: 1fr;
  }

  .research-footer .research-wrap {
    flex-direction: column;
  }
}