/* UKCEH brand styling (UKCEH Brand Guidelines 2.0).
   Colours are defined in _brand.yml; component tokens live here. */

:root {
  --ukceh-black: #000000;
  --ukceh-white: #ffffff;
  --ukceh-data: #dbfe52;
  --ukceh-fg: var(--ukceh-black);
  --ukceh-rule: var(--ukceh-black);
  --ukceh-muted: #4d4d4d;
  --ukceh-panel: #f5f9f7; /* air 25% tint */
  --ukceh-font: "Suisse Int'l", "Suisse International", Arial, Helvetica, sans-serif;
}

body.quarto-dark {
  --ukceh-fg: var(--ukceh-white);
  --ukceh-rule: var(--ukceh-white);
  --ukceh-muted: #b3b3b3;
  --ukceh-panel: rgba(255, 255, 255, 0.07);
}

/* ---------- Typography ---------- */

body,
.navbar,
h1, h2, h3, h4, h5, h6,
.title,
.btn {
  font-family: var(--ukceh-font);
}

body {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6, .title {
  font-weight: 500;
  letter-spacing: -0.015em;
}

#quarto-content main h2 {
  font-size: 1.75rem;
  margin-top: 3.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--ukceh-rule);
  border-bottom: 0;
}

#quarto-content main section.level2:first-of-type > h2 {
  margin-top: 0;
}

#quarto-content main h3 {
  font-size: 1.35rem;
  margin: 3rem 0 1.25rem;
}

strong {
  font-weight: 600;
}

/* Body links: black (light) or data green (dark), with a data-green
   highlight on hover. */
#quarto-content main a:not(.cta) {
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

#quarto-content main a:not(.cta):hover {
  background-color: var(--ukceh-data);
  color: var(--ukceh-black);
  text-decoration: none;
}

/* Focus brackets: [ LABEL ] for categories and section names. */
.label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.label::before { content: "[\2002"; }
.label::after { content: "\2002]"; }

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

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

.navbar {
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
}

.navbar .navbar-logo {
  flex-shrink: 0;
  width: auto;
  height: 32px; /* digital minimum is 30px; never crop the logo */
  max-height: none;
}

.navbar .navbar-title {
  margin-left: 1rem;
  padding-left: 1rem;
  border-left: 1px solid rgba(255, 255, 255, 0.4);
  font-size: 0.95rem;
  font-weight: 500;
}

.navbar .nav-link {
  font-size: 0.95rem;
}

/* Small screens: keep the logo and title whole */
@media (max-width: 575.98px) {
  .navbar .navbar-brand-logo {
    flex-shrink: 0;
    overflow: visible;
  }

  .navbar .navbar-logo {
    height: 30px;
  }

  .navbar .navbar-brand {
    margin-right: 0;
  }

  .navbar .navbar-title {
    margin-left: 0.5rem;
    padding-left: 0.5rem;
    margin-right: 0.5rem;
    font-size: 0.9rem;
  }
}

/* Too narrow for logo and title together; the logo still links home. */
@media (max-width: 389.98px) {
  .navbar .navbar-title {
    display: none;
  }
}

.navbar .nav-link.active {
  color: var(--ukceh-white);
  box-shadow: inset 0 -2px 0 var(--ukceh-data);
}

.navbar .nav-link:hover,
.navbar .nav-link:focus {
  color: var(--ukceh-data) !important;
}

/* Theme picker (assets/js/theme.js) replaces Quarto's icon-only toggle. */
.navbar .quarto-color-scheme-toggle {
  display: none !important;
}

.theme-picker {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-left: 0.5rem;
  color: var(--ukceh-white);
  font-size: 0.9rem;
}

/* Inside the collapsed menu on small screens */
@media (max-width: 991.98px) {
  .theme-picker {
    margin: 0.75rem 0 1rem;
    padding-left: 0.6rem; /* line up with the menu links */
  }
}

.theme-picker select {
  color-scheme: dark;
  appearance: none;
  padding: 0.25rem 1.75rem 0.25rem 0.6rem;
  border: 1px solid rgba(255, 255, 255, 0.6);
  border-radius: 0;
  background: var(--ukceh-black) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' fill='none' stroke='%23fff' stroke-width='1.5'/%3E%3C/svg%3E") no-repeat right 0.6rem center;
  color: var(--ukceh-white);
  font: inherit;
  cursor: pointer;
}

.theme-picker select:hover {
  border-color: var(--ukceh-data);
}

.theme-picker select:focus-visible {
  border-color: var(--ukceh-data);
  outline: 2px solid var(--ukceh-data);
  outline-offset: 2px;
}

/* ---------- Title banner ---------- */

.quarto-title-banner {
  padding: 3.5rem 0 3rem;
  margin-bottom: 0;
}

#title-block-header {
  margin-bottom: 3rem;
}

#title-block-header .quarto-title-meta {
  margin: 0;
}

main.content.quarto-banner-title-block {
  margin-top: 0;
}

body.quarto-dark .quarto-title-banner {
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.quarto-title-banner .title {
  font-size: clamp(2.25rem, 5vw, 3.5rem);
  line-height: 1.05;
  letter-spacing: -0.025em;
}

.quarto-title-banner .description {
  max-width: 38rem;
  padding-top: 1.25rem;
  font-size: 1.15rem;
}

/* The subtitle sits above the title as a bracket label. */
.quarto-title {
  display: flex;
  flex-direction: column;
}

.quarto-title .subtitle {
  order: -1;
  margin: 0 0 1.25rem;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ukceh-data);
  opacity: 1;
}

.quarto-title .subtitle::before { content: "[\2002"; }
.quarto-title .subtitle::after { content: "\2002]"; }

.home .quarto-title-banner {
  padding: 5rem 0 4.5rem;
}

.home .quarto-title-banner .title {
  font-size: clamp(2.5rem, 7vw, 4.5rem);
}

/* ---------- Call to action (arrow in a data-green box) ---------- */

.cta {
  margin-left: -0.85rem;
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.35rem 0.35rem 0.35rem 0.85rem;
  border: 1px solid transparent;
  color: inherit;
  font-weight: 500;
  text-decoration: none;
  transition: border-color 0.15s ease;
}

.cta::after {
  content: "\2192";
  display: inline-grid;
  place-items: center;
  width: 1.75rem;
  height: 1.75rem;
  background: var(--ukceh-data);
  color: var(--ukceh-black);
}

.cta:hover,
.cta:focus-visible {
  border-color: currentColor;
  color: inherit;
}

/* ---------- Lead paragraph ---------- */

.lead {
  font-size: 1.3rem;
  font-weight: 400;
  line-height: 1.45;
  letter-spacing: -0.005em;
  margin-bottom: 1.5rem;
}

@media (max-width: 575.98px) {
  .lead {
    font-size: 1.15rem;
  }
}

/* ---------- Key figures ---------- */

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(10rem, 1fr));
  gap: 1rem 2rem;
  margin: 2rem 0 2.5rem;
}

.stat {
  padding-top: 0.75rem;
  border-top: 1px solid var(--ukceh-rule);
}

.stat p {
  margin-bottom: 0.25rem;
}

.stat p:first-child {
  font-size: 2.25rem;
  font-weight: 500;
  letter-spacing: -0.025em;
  line-height: 1.1;
}

.stat p:last-child {
  color: var(--ukceh-muted);
  font-size: 0.9rem;
  line-height: 1.4;
}

/* ---------- Link cards ---------- */

.link-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
  gap: 1rem;
  margin: 1.5rem 0 2rem;
}

/* The whole card is clickable: the title link is stretched over it. */
.link-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 1.75rem 1.75rem 4.5rem;
  border: 1px solid var(--ukceh-rule);
  transition: background-color 0.15s ease, color 0.15s ease;
}

.link-card p {
  margin-bottom: 0.5rem;
}

/* Photo header, bled to the card edges. The wrapper clips the hover zoom. */
.link-card p:has(> .link-card-photo) {
  margin: -1.75rem -1.75rem 1.5rem;
  overflow: hidden;
}

.link-card .link-card-photo {
  display: block;
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.link-card:hover .link-card-photo,
.link-card:focus-within .link-card-photo {
  transform: scale(1.04);
}

.link-card .label {
  color: var(--ukceh-muted);
}

.link-card-title {
  display: block;
  margin-top: 0.5rem;
  font-size: 1.35rem;
  font-weight: 500;
  letter-spacing: -0.015em;
  line-height: 1.2;
}

#quarto-content main .link-card a {
  color: inherit;
  text-decoration: none;
}

#quarto-content main .link-card a::before {
  content: "";
  position: absolute;
  inset: 0;
}

/* Override the body-link hover (black on data green). */
#quarto-content main .link-card a:hover {
  background: none;
  color: inherit;
}

#quarto-content main .link-card a:focus-visible {
  outline: none;
}

#quarto-content main .link-card a:focus-visible::before {
  outline: 2px solid var(--ukceh-fg);
  outline-offset: 3px;
}

.link-card p:last-child {
  color: var(--ukceh-muted);
}

/* Arrow in a data-green box, matching .cta */
.link-card::after {
  content: "\2192";
  position: absolute;
  right: 1.25rem;
  bottom: 1.25rem;
  display: inline-grid;
  place-items: center;
  width: 1.75rem;
  height: 1.75rem;
  background: var(--ukceh-data);
  color: var(--ukceh-black);
  transition: transform 0.15s ease;
}

/* Hover: the card turns black, like the brand's dark panels. */
.link-card:hover,
.link-card:focus-within {
  background: var(--ukceh-black);
  color: var(--ukceh-white);
  border-color: var(--ukceh-black);
}

.link-card:hover::after,
.link-card:focus-within::after {
  transform: translateX(4px);
}

.link-card:hover .label,
.link-card:focus-within .label {
  color: var(--ukceh-data);
}

.link-card:hover p:last-child,
.link-card:focus-within p:last-child {
  color: rgba(255, 255, 255, 0.8);
}

/* Dark mode: the page is already black, so lift the card instead. */
body.quarto-dark .link-card:hover,
body.quarto-dark .link-card:focus-within {
  background: var(--ukceh-panel);
  border-color: var(--ukceh-data);
}

@media (prefers-reduced-motion: reduce) {
  .link-card,
  .link-card::after,
  .link-card .link-card-photo {
    transition: none;
  }
}

/* ---------- Figures ---------- */

/* Charts have white backgrounds, so frame them as a white panel in both modes. */
#quarto-content main figure.figure img {
  padding: 1rem;
  background: var(--ukceh-white);
  border: 1px solid var(--ukceh-rule);
}

@media (max-width: 575.98px) {
  #quarto-content main figure.figure img {
    padding: 0.35rem;
  }
}

/* Photos don't need the chart panel. */
#quarto-content main figure.figure img.photo {
  padding: 0;
  background: none;
  border: 0;
}

#quarto-content main figure.figure figcaption {
  margin-top: 0.75rem;
  color: var(--ukceh-muted);
  font-size: 0.85rem;
  line-height: 1.5;
}

/* Two photos side by side (::: {.photo-pair}), stacked on small screens. */
.photo-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin: 2rem 0;
}

/* Each image is in its own paragraph. */
.photo-pair p {
  margin: 0;
}

.photo-pair img.photo {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

@media (max-width: 575.98px) {
  .photo-pair {
    grid-template-columns: 1fr;
  }
}

/* ---------- Case studies ---------- */

/* Each case study section (### Heading {.case}) is a single card. */
section.case {
  position: relative;
  margin-top: 1.5rem;
  padding: 2rem;
  border: 1px solid var(--ukceh-rule);
}

/* Data point */
section.case::before {
  content: "";
  position: absolute;
  top: 12px;
  right: 12px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--ukceh-fg);
}

#quarto-content main section.case > h3 {
  margin: 0 0 0.25rem;
}

section.case .label {
  color: var(--ukceh-muted);
  margin-bottom: 0.5rem;
}

section.case > p:last-child {
  margin-bottom: 0;
}

/* Optional photo header: placed first in the markdown after the heading,
   moved to the top of the card and bled to its edges. */
section.case:has(> p > .case-photo) {
  display: flex;
  flex-direction: column;
}

section.case:has(> p > .case-photo)::before {
  display: none;
}

section.case > p:has(> .case-photo) {
  order: -1;
  margin: -2rem -2rem 1.5rem;
}

section.case .case-photo {
  display: block;
  width: 100%;
  aspect-ratio: 2 / 1;
  object-fit: cover;
}

.photo-credits {
  margin-top: 3rem;
  color: var(--ukceh-muted);
  font-size: 0.8rem;
  line-height: 1.5;
}

@media (max-width: 767.98px) {
  section.case {
    padding: 1.25rem;
  }

  section.case > p:has(> .case-photo) {
    margin: -1.25rem -1.25rem 1.25rem;
  }
}

/* ---------- Callouts: flat, with a vertical rule ---------- */

div.callout {
  border: 0 !important;
  border-left: 2px solid var(--ukceh-rule) !important;
  border-radius: 0;
  background: var(--ukceh-panel);
}

div.callout .callout-header {
  background: transparent !important;
  border: 0;
}

div.callout .callout-icon-container {
  display: none;
}

div.callout .callout-title-container {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* ---------- Tables and quotes ---------- */

#quarto-content main table {
  --bs-table-bg: transparent;
  border-top: 1px solid var(--ukceh-rule);
}

#quarto-content main table th {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-bottom: 1px solid var(--ukceh-rule) !important;
}

#quarto-content main table td,
#quarto-content main table th {
  padding: 0.85rem 1rem 0.85rem 0;
}

#quarto-content main blockquote {
  border-left: 2px solid var(--ukceh-rule);
  color: var(--ukceh-muted);
  font-size: 1rem;
}

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

.nav-footer {
  min-height: 0;
  padding: 2rem 0;
  background: var(--ukceh-black);
  color: rgba(255, 255, 255, 0.8);
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  font-size: 0.85rem;
}

.nav-footer a {
  color: var(--ukceh-white);
}

.nav-footer a:hover {
  color: var(--ukceh-data);
}

.nav-footer .footer-logo {
  height: 40px;
  width: auto;
}

/* ---------- Team ---------- */

.team-list {
  margin: 1.5rem 0 2rem;
}

.person {
  display: grid;
  grid-template-columns: 9rem 1fr;
  gap: 1.5rem;
  align-items: start;
  padding: 1.5rem 0;
  border-top: 1px solid var(--ukceh-rule);
}

.person:last-child {
  border-bottom: 1px solid var(--ukceh-rule);
}

.person > p {
  margin: 0;
}

.person .person-photo {
  display: block;
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  border: 1px solid var(--ukceh-rule);
}

.person-body p {
  margin: 0 0 0.75rem;
}

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

.person-name {
  display: block;
  font-size: 1.15rem;
  font-weight: 500;
  line-height: 1.3;
}

.person-role {
  display: block;
  margin-top: 0.15rem;
  color: var(--ukceh-muted);
  font-size: 0.9rem;
  line-height: 1.4;
}

#quarto-content main .person-link {
  margin-right: 1.25rem;
  font-size: 0.9rem;
  font-weight: 500;
}

#quarto-content main .person-link::after {
  content: "\2002\2197";
  text-decoration: none;
  display: inline-block;
}

@media (max-width: 575.98px) {
  .person {
    grid-template-columns: 5.5rem 1fr;
    gap: 1rem;
  }
}

/* ---------- Cookie consent banner (assets/js/consent.js) ---------- */

.consent-banner {
  position: fixed;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 1050;
  background: var(--ukceh-black);
  color: var(--ukceh-white);
  border-top: 1px solid rgba(255, 255, 255, 0.35);
}

.consent-banner[hidden] {
  display: none;
}

.consent-banner:focus {
  outline: none;
}

.consent-banner:focus-visible {
  outline: 2px solid var(--ukceh-data);
  outline-offset: -2px;
}

.consent-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem 2rem;
  max-width: 1100px;
  margin: 0 auto;
  padding: 1.25rem 1.5rem;
}

.consent-text {
  flex: 1 1 28rem;
  font-size: 0.9rem;
  line-height: 1.5;
}

.consent-text p {
  margin: 0;
}

.consent-text .consent-title {
  margin-bottom: 0.25rem;
  font-weight: 500;
}

.consent-banner a {
  color: var(--ukceh-white);
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

.consent-banner a:hover {
  color: var(--ukceh-data);
}

.consent-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* Both choices are styled identically so neither is given more prominence. */
.consent-btn {
  padding: 0.6rem 1rem;
  border: 1px solid var(--ukceh-white);
  border-radius: 0;
  background: transparent;
  color: var(--ukceh-white);
  font: inherit;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
}

.consent-btn:hover,
.consent-btn:focus-visible {
  border-color: var(--ukceh-data);
  background: var(--ukceh-data);
  color: var(--ukceh-black);
}

.consent-btn:focus-visible {
  outline: 2px solid var(--ukceh-white);
  outline-offset: 2px;
}

@media (max-width: 575.98px) {
  .consent-inner {
    padding: 1rem;
  }

  .consent-actions,
  .consent-btn {
    width: 100%;
  }
}

/* Footer button that reopens the banner, styled as a link. */
.nav-footer .cookie-preferences {
  padding: 0;
  border: 0;
  background: none;
  color: var(--ukceh-white);
  font: inherit;
  text-decoration: underline;
  text-underline-offset: 0.2em;
  cursor: pointer;
}

.nav-footer .cookie-preferences:hover,
.nav-footer .cookie-preferences:focus-visible {
  color: var(--ukceh-data);
}