/* ============================================================
   HCoG project page — redesign
   pi.website-inspired editorial layout with subtle Mondrian
   accents. Times New Roman body, JetBrains Mono accents.
   Snappy 80–140ms transitions. Loaded AFTER index.css so it
   wins the cascade.
   ============================================================ */

:root {
  --bg:          #FAFAF7;
  --bg-elev:     #FFFFFF;
  --ink:         #0B0B0C;
  --ink-2:       #2A2A2C;
  --mute:        #6B6B70;
  --line:        #E4E2DC;

  --m-red:    #D62828;
  --m-blue:   #1D3F8C;
  --m-yellow: #F5C518;
  --m-black:  #0B0B0C;

  --font-sans:  "Times New Roman", "Linux Libertine", Times, "Songti SC", serif;
  --font-mono:  "JetBrains Mono", "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --t-fast: 80ms cubic-bezier(.2,.6,.2,1);
  --t-mid:  120ms cubic-bezier(.2,.6,.2,1);

  --max: 1040px;
  --pad: clamp(24px, 6vw, 88px);
  --nav-h: 60px;
}

/* ---- Strip the legacy background and Bulma colors ---------- */
body.redesign {
  background: var(--bg) !important;
  background-image: none !important;
  color: var(--ink) !important;
  font-family: var(--font-sans) !important;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  padding-top: var(--nav-h);
}
body.redesign * { box-sizing: border-box; }
body.redesign p, body.redesign li, body.redesign h1, body.redesign h2, body.redesign h3, body.redesign h4 {
  font-family: var(--font-sans) !important;
}
body.redesign code, body.redesign pre { font-family: var(--font-mono) !important; }

/* Bulma neutralisers */
body.redesign .hero { background: transparent !important; }
body.redesign .hero.is-light { background: transparent !important; }
body.redesign .hero.is-small .hero-body,
body.redesign .hero .hero-body { padding: 0 !important; }
body.redesign section.hero,
body.redesign section.section {
  padding: clamp(40px, 6vw, 72px) 0 !important;
  border-top: 1px solid var(--line);
}
body.redesign #top.hero,
body.redesign #hero.hero { border-top: 0 !important; }
body.redesign .container,
body.redesign .container.is-max-desktop {
  width: 100% !important;
  max-width: var(--max) !important;
  margin: 0 auto !important;
  padding: 0 var(--pad) !important;
}
body.redesign .columns,
body.redesign .column { display: block !important; width: 100% !important; padding: 0 !important; margin: 0 !important; flex: none !important; }
body.redesign .column.is-four-fifths { max-width: 100% !important; }
body.redesign .has-text-centered { text-align: left !important; }
body.redesign .is-centered { justify-content: flex-start !important; }

/* ---- Top sticky nav --------------------------------------- */
body.redesign .top-nav {
  position: fixed; top: 0; left: 0; right: 0;
  height: var(--nav-h);
  background: rgba(250,250,247,.92);
  backdrop-filter: saturate(140%) blur(8px);
  -webkit-backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid var(--line);
  z-index: 50;
}
body.redesign .top-nav__inner {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--pad);
  height: 100%;
  display: flex; align-items: center; gap: 28px;
}
body.redesign .top-nav__brand {
  display: inline-flex; align-items: center; gap: 10px;
  font-weight: 700; font-size: 16px; color: var(--ink);
  text-decoration: none; letter-spacing: -0.01em;
}
body.redesign .top-nav__brand::before {
  content: "";
  display: inline-block;
  width: 14px; height: 14px;
  background:
    linear-gradient(to right, var(--m-red) 50%, var(--m-black) 50%) top / 100% 50% no-repeat,
    linear-gradient(to right, var(--m-yellow) 50%, var(--m-blue) 50%) bottom / 100% 50% no-repeat;
  transition: transform var(--t-fast);
}
body.redesign .top-nav__brand:hover::before { transform: rotate(90deg); }
body.redesign .top-nav__links {
  display: flex; gap: 22px; align-items: center;
  list-style: none; margin: 0; padding: 0;
  overflow-x: auto; scrollbar-width: none;
}
body.redesign .top-nav__links::-webkit-scrollbar { display: none; }
body.redesign .top-nav__links a {
  position: relative;
  font-size: 14px; color: var(--ink-2);
  text-decoration: none;
  padding: 6px 0;
  white-space: nowrap;
  transition: color var(--t-fast);
}
body.redesign .top-nav__links a::after {
  content: ""; position: absolute; left: 0; right: 100%; bottom: 0;
  height: 2px; background: var(--ink);
  transition: right var(--t-fast);
}
body.redesign .top-nav__links a:hover { color: var(--ink); }
body.redesign .top-nav__links a:hover::after { right: 0; }
body.redesign .top-nav__cta {
  margin-left: auto;
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px; letter-spacing: .06em; text-transform: uppercase;
  padding: 7px 12px;
  border: 1px solid var(--ink);
  color: var(--ink);
  text-decoration: none;
  transition: background var(--t-fast), color var(--t-fast);
}
body.redesign .top-nav__cta:hover { background: var(--ink); color: var(--bg); }

/* ---- Hero -------------------------------------------------- */
body.redesign #hero { padding: clamp(36px, 6vw, 64px) 0 clamp(28px, 5vw, 48px) !important; }
body.redesign #hero .container { text-align: left !important; }
body.redesign #hero .container::before {
  content: "PAPER · HCoG · CVPR 2025";
  display: block;
  font-family: var(--font-mono);
  font-size: 12px; letter-spacing: .08em;
  color: var(--mute); text-transform: uppercase;
  margin-bottom: 18px;
}
body.redesign .publication-title,
body.redesign .title.is-1.publication-title,
body.redesign h1.publication-title {
  font-family: var(--font-sans) !important;
  font-weight: 700 !important;
  font-size: clamp(28px, 4vw, 46px) !important;
  line-height: 1.15 !important;
  letter-spacing: -0.02em !important;
  color: var(--ink) !important;
  margin: 0 0 24px !important;
  text-align: left !important;
  max-width: 32ch;
}
/* Kill the rainbow text */
body.redesign .rainbow-text {
  background: none !important;
  background-image: none !important;
  -webkit-background-clip: initial !important;
  background-clip: initial !important;
  -webkit-text-fill-color: currentColor !important;
  animation: none !important;
  color: var(--ink) !important;
  font-style: italic;
  border-bottom: 3px solid var(--m-red);
  padding-bottom: 1px;
}
body.redesign .publication-authors {
  font-family: var(--font-sans) !important;
  font-size: 15px !important;
  color: var(--ink-2) !important;
  text-align: left !important;
  margin: 0 0 6px !important;
  line-height: 1.7;
}
body.redesign .publication-authors .author-block { margin-right: 14px; }
body.redesign .publication-authors a {
  color: var(--ink) !important;
  border-bottom: 1px solid var(--line);
  transition: border-color var(--t-fast);
}
body.redesign .publication-authors a:hover { border-bottom-color: var(--ink); text-decoration: none !important; }
body.redesign .publication-authors:last-of-type {
  font-family: var(--font-mono) !important;
  font-size: 12px !important;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: var(--mute) !important;
  margin-top: 8px !important;
}

/* CTA buttons */
body.redesign .publication-links {
  display: flex; flex-wrap: wrap; gap: 8px;
  margin-top: 22px !important;
  justify-content: flex-start !important;
}
body.redesign .publication-links .link-block { margin: 0 !important; }
body.redesign .publication-links a.button,
body.redesign .publication-links a.external-link,
body.redesign .button.is-rounded,
body.redesign .button.is-dark {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-mono) !important;
  font-size: 12px !important;
  font-weight: 500 !important;
  letter-spacing: .06em !important;
  text-transform: uppercase !important;
  padding: 9px 14px !important;
  background: transparent !important;
  background-image: none !important;
  border: 1px solid var(--ink) !important;
  border-radius: 0 !important;
  color: var(--ink) !important;
  box-shadow: none !important;
  transition: background var(--t-fast), color var(--t-fast), border-color var(--t-fast) !important;
  height: auto !important;
  line-height: 1 !important;
}
body.redesign .publication-links a.button:hover {
  background: var(--ink) !important;
  color: var(--bg) !important;
}
body.redesign .publication-links .icon { color: inherit !important; margin: 0 !important; }

/* Teaser */
body.redesign .hero.teaser { padding: 0 !important; border-top: 0 !important; }
body.redesign .hero.teaser .container,
body.redesign .hero.teaser .container.is-max-desktop {
  max-width: var(--max) !important;
  padding: 0 var(--pad) !important;
  margin: 0 auto !important;
}
body.redesign .hero.teaser .hero-body {
  padding: 0 0 clamp(36px, 6vw, 64px) !important;
  display: block !important;
}
body.redesign .hero.teaser video {
  max-width: 100% !important;
  width: 100% !important;
  height: auto !important;
  margin: 0 !important;
  display: block !important;
  border: 1px solid var(--line) !important;
  border-radius: 0 !important;
  box-shadow: none !important;
}
body.redesign .hero.teaser .subtitle {
  max-width: 100% !important;
  margin-top: 18px !important;
  text-align: left !important;
  font-family: var(--font-sans) !important;
  font-size: 15px !important;
  line-height: 1.7;
  color: var(--ink-2) !important;
}

/* ---- Section headings (Abstract / Method / Results / BibTeX) */
body.redesign section.hero h2.title,
body.redesign section.section h2.title,
body.redesign h2.title.is-3 {
  font-family: var(--font-sans) !important;
  font-weight: 700 !important;
  font-size: clamp(24px, 3vw, 32px) !important;
  letter-spacing: -0.02em !important;
  color: var(--ink) !important;
  text-align: left !important;
  margin: 0 0 22px !important;
  position: relative;
  padding-left: 0 !important;
}
body.redesign #abstract h2.title::before { background: var(--m-red); }
body.redesign #method h2.title::before { background: var(--m-blue); }
body.redesign #results h2.title::before { background: var(--m-yellow); }
body.redesign #BibTeX h2.title::before { background: var(--m-black); }
body.redesign section.hero h2.title::before,
body.redesign section.section h2.title::before {
  content: "";
  display: inline-block;
  width: 12px; height: 12px;
  margin-right: 14px;
  vertical-align: 0;
  position: relative; top: -4px;
  background: var(--m-black);
}

/* ---- Abstract --------------------------------------------- */
body.redesign #abstract .content,
body.redesign #abstract .has-text-justified {
  text-align: left !important;
}
body.redesign #abstract p {
  font-family: var(--font-sans) !important;
  font-size: 16px !important;
  line-height: 1.75 !important;
  color: var(--ink-2) !important;
  margin: 0 !important;
}
body.redesign #abstract strong { color: var(--ink) !important; }

/* ---- Method Overview / Details ---------------------------- */
body.redesign .method-overview-container,
body.redesign .method-details-container { margin-top: 18px !important; }
body.redesign .method-overview-item,
body.redesign .method-details-item {
  display: grid !important;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  align-items: center !important;
  gap: 28px !important;
}
body.redesign .method-details-item {
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr);
}
body.redesign .method-image-container {
  border: 1px solid var(--line);
  background: var(--bg-elev);
  padding: 0;
  justify-content: stretch !important;
}
body.redesign .method-image-container img,
body.redesign .tilt-img {
  width: 100% !important;
  height: auto !important;
  display: block !important;
  border-radius: 0 !important;
  transition: none !important;
  transform: none !important;
}
body.redesign .method-caption {
  padding: 0 !important;
}
body.redesign .method-caption .subtitle,
body.redesign .method-caption h2.subtitle {
  font-family: var(--font-sans) !important;
  font-size: 15px !important;
  line-height: 1.7 !important;
  color: var(--ink-2) !important;
  text-align: left !important;
  margin: 0 !important;
}
body.redesign .method-caption b,
body.redesign .method-caption strong { color: var(--ink) !important; font-weight: 700; }

/* ---- Results video grid ----------------------------------- */
body.redesign .video-grid {
  display: grid !important;
  grid-template-columns: repeat(3, minmax(0, 1fr)) !important;
  gap: 22px !important;
  margin-top: 18px !important;
}
body.redesign .video-item {
  display: flex !important;
  flex-direction: column !important;
  align-items: stretch !important;
  gap: 10px !important;
  padding: 12px;
  border: 1px solid var(--line);
  background: var(--bg-elev);
  position: relative;
  transition: border-color var(--t-fast);
}
body.redesign .video-item::before {
  content: "";
  position: absolute; left: -1px; top: -1px; bottom: -1px;
  width: 3px;
  background: var(--m-black);
  transform: scaleY(0); transform-origin: top;
  transition: transform var(--t-fast);
}
body.redesign .video-item:hover { border-color: var(--ink); }
body.redesign .video-item:hover::before { transform: scaleY(1); }
body.redesign .video-item:nth-child(3n+1)::before { background: var(--m-red); }
body.redesign .video-item:nth-child(3n+2)::before { background: var(--m-blue); }
body.redesign .video-item:nth-child(3n+3)::before { background: var(--m-yellow); }
body.redesign .video-item video {
  width: 100% !important;
  height: auto !important;
  max-height: none !important;
  border: 1px solid var(--line) !important;
  border-radius: 0 !important;
  box-shadow: none !important;
  background: var(--bg);
  display: block !important;
}
body.redesign .video-item h2.subtitle,
body.redesign .video-item .subtitle {
  font-family: var(--font-sans) !important;
  font-size: 13px !important;
  line-height: 1.55 !important;
  color: var(--ink-2) !important;
  text-align: left !important;
  margin: 0 !important;
}

/* ---- BibTeX ------------------------------------------------ */
body.redesign #BibTeX { padding-top: clamp(40px, 5vw, 60px) !important; }
body.redesign #BibTeX .container.is-max-desktop.content {
  max-width: var(--max) !important;
  padding: 0 var(--pad) !important;
  margin: 0 auto !important;
}
body.redesign #BibTeX h2.title {
  font-family: var(--font-sans) !important;
  font-weight: 700 !important;
  font-size: clamp(24px, 3vw, 32px) !important;
  margin: 0 0 18px !important;
  text-align: left !important;
}
body.redesign #BibTeX pre {
  background: var(--bg-elev) !important;
  border: 1px solid var(--line) !important;
  border-radius: 0 !important;
  padding: 18px 20px !important;
  overflow-x: auto;
}
body.redesign #BibTeX code {
  font-family: var(--font-mono) !important;
  font-size: 12px !important;
  line-height: 1.6;
  color: var(--ink) !important;
  background: transparent !important;
  padding: 0 !important;
  white-space: pre;
}

/* ---- Footer ----------------------------------------------- */
body.redesign footer.footer {
  background: transparent !important;
  border-top: 1px solid var(--line);
  padding: 28px 0 36px !important;
  margin-top: 24px;
}
body.redesign footer.footer .container {
  width: 100% !important;
  max-width: var(--max) !important;
  margin: 0 auto !important;
  padding: 0 var(--pad) !important;
}
body.redesign footer.footer .columns,
body.redesign footer.footer .column { display: block !important; padding: 0 !important; margin: 0 !important; width: 100% !important; }
body.redesign footer.footer .content {
  display: flex; align-items: center; gap: 14px;
}
body.redesign footer.footer .content::before {
  content: "";
  display: inline-block;
  width: 100px; height: 8px;
  background:
    linear-gradient(to right,
      var(--m-red) 0 22%,
      var(--m-yellow) 22% 44%,
      var(--m-blue) 44% 78%,
      var(--m-black) 78% 100%);
  flex-shrink: 0;
}
body.redesign footer.footer p {
  font-family: var(--font-mono) !important;
  font-size: 11px !important;
  color: var(--mute) !important;
  letter-spacing: .04em;
  text-transform: uppercase;
  margin: 0 !important;
  line-height: 1.6;
}
body.redesign footer.footer a {
  color: var(--ink) !important;
  border-bottom: 1px solid var(--line);
  text-decoration: none !important;
  transition: border-color var(--t-fast);
}
body.redesign footer.footer a:hover { border-bottom-color: var(--ink); }

/* ---- Reduced motion --------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  body.redesign *, body.redesign *::before, body.redesign *::after {
    transition: none !important; animation: none !important;
  }
}

/* ---- Tablet ≤ 820px -------------------------------------- */
@media (max-width: 820px) {
  body.redesign { --nav-h: 56px; }
  body.redesign .top-nav__inner { gap: 16px; }
  body.redesign .top-nav__links { gap: 16px; }
  body.redesign .top-nav__cta { padding: 6px 10px; font-size: 11px; }
  body.redesign .method-overview-item,
  body.redesign .method-details-item { grid-template-columns: minmax(0, 1fr) !important; }
  body.redesign .video-grid { grid-template-columns: repeat(2, minmax(0, 1fr)) !important; gap: 16px !important; }
}

/* ---- Phone ≤ 520px --------------------------------------- */
@media (max-width: 520px) {
  :root { --pad: 18px; }
  body.redesign { font-size: 15px; --nav-h: 52px; }
  body.redesign .top-nav__brand { font-size: 14px; }
  body.redesign .top-nav__brand::before { width: 12px; height: 12px; }
  body.redesign .top-nav__links a { font-size: 13px; }
  body.redesign .top-nav__cta { padding: 5px 9px; font-size: 10px; }
  body.redesign #hero .container::before { font-size: 11px; margin-bottom: 14px; }
  body.redesign .publication-title { font-size: 24px !important; }
  body.redesign .publication-authors { font-size: 14px !important; }
  body.redesign .publication-links a.button { padding: 7px 11px !important; font-size: 11px !important; }
  body.redesign .video-grid { grid-template-columns: minmax(0, 1fr) !important; }
  body.redesign section.hero, body.redesign section.section { padding: 32px 0 !important; }
}

/* ---- Touch: kill hover-only effects ---------------------- */
@media (hover: none) {
  body.redesign .top-nav__cta:hover { background: transparent !important; color: var(--ink) !important; }
  body.redesign .publication-links a.button:hover { background: transparent !important; color: var(--ink) !important; }
  body.redesign .video-item:hover { border-color: var(--line) !important; }
  body.redesign .video-item:hover::before { transform: scaleY(0) !important; }
}