/* HOI-Retarget project page — sits on top of Bulma.
   Keep every rule anonymous: no institutional colours, fonts, or logos. */

:root {
  --ink:        #1c1c1f;
  --ink-soft:   #4a4a52;
  --ink-faint:  #8b8b95;
  --rule:       #e3e3e8;
  --surface:    #ffffff;
  --surface-2:  #f7f7f9;
  /* No hue. The renders carry the only colour on the page; the type and the
     rules stay black so nothing competes with them. */
  --accent:     #1c1c1f;
  --accent-dim: #f0f0f2;
}

body {
  font-family: 'Noto Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--ink);
  background: var(--surface);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, .title, .subtitle {
  font-family: 'Google Sans', 'Noto Sans', sans-serif;
  color: var(--ink);
}

/* ------------------------------------------------------------------ hero -- */
.hero.is-head {
  padding: 4rem 1.5rem 2.5rem;
  border-bottom: 1px solid var(--rule);
}

.paper-title {
  font-size: 2.6rem;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.015em;
  margin-bottom: 0.4rem;
}
.paper-title .lede { color: var(--accent); }

.paper-tagline {
  font-size: 1.15rem;
  color: var(--ink-soft);
  margin-bottom: 1.8rem;
}

.venue-line {
  font-size: 1.05rem;
  color: var(--ink-soft);
  margin-bottom: 0.35rem;
}
.venue-line strong { color: var(--ink); font-weight: 600; }


/* --------------------------------------------------------------- buttons -- */
.link-row { display: flex; flex-wrap: wrap; gap: 0.6rem; justify-content: center; }
/* The hero's row sat almost on the affiliation line while the title above had
   room to breathe; the gap now reads as belonging to the block, not to the text. */
.hero .link-row { margin-top: 1.6rem; }

.link-row .button {
  background: var(--ink);
  border: 1px solid var(--ink);
  color: #fff;
  border-radius: 999px;
  padding: 0.55rem 1.3rem;
  height: auto;
  font-weight: 500;
  transition: transform 0.12s ease, background 0.12s ease;
}
.link-row .button:hover { background: #34343c; color: #fff; transform: translateY(-1px); }
.link-row .button.is-ghost {
  background: transparent;
  color: var(--ink-faint);
  border-color: var(--rule);
  cursor: not-allowed;
}
.link-row .button.is-ghost:hover { transform: none; background: transparent; color: var(--ink-faint); }
.link-row .icon { margin-right: 0.45rem; }

/* -------------------------------------------------------------- sections -- */
.section { padding: 3.5rem 1.5rem; }
.section.is-tinted { background: var(--surface-2); border-block: 1px solid var(--rule); }

.section-title {
  font-size: 1.9rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: 0.4rem;
  text-align: center;
}
.section-kicker {
  text-align: center;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.5rem;
}
.section-intro {
  max-width: 46rem;
  margin: 0 auto 2.2rem;
  text-align: center;
  color: var(--ink-soft);
  line-height: 1.65;
}

.prose { line-height: 1.75; color: var(--ink-soft); }
.prose strong { color: var(--ink); font-weight: 600; }

/* ------------------------------------------------------- figures + video -- */
figure.plate { margin: 0 0 1.2rem; }
figure.plate img { display: block; width: 100%; border-radius: 6px; }
figure.plate.is-bordered img { border: 1px solid var(--rule); }

figcaption, .caption {
  margin-top: 0.7rem;
  font-size: 0.9rem;
  line-height: 1.55;
  color: var(--ink-soft);
  text-align: center;
}
figcaption strong, .caption strong { color: var(--ink); font-weight: 600; }

/* `display:block` would beat the UA's [hidden] rule, so restate it. */
.panel-video[hidden] { display: none; }

.panel-video {
  display: block;
  width: 100%;
  border-radius: 6px;
  background: #dfe3e8;
}

/* Column headers sitting above an N-panel side-by-side video. The panels are
   exact equal fractions of the frame, so equal flex children line up. */
.panel-labels {
  display: flex;
  margin-bottom: 0.4rem;
  gap: 2px;
}
.panel-labels span {
  flex: 1 1 0;
  text-align: center;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--ink-faint);
  padding: 0.3rem 0.2rem;
  background: var(--surface-2);
  border-radius: 4px;
}
.panel-labels span.is-ours { color: var(--accent); background: var(--accent-dim); }

/* ------------------------------------------------------------ clip tabs --- */
.clip-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  justify-content: center;
  margin-bottom: 1.1rem;
}
.clip-tabs button {
  font: inherit;
  font-size: 0.85rem;
  border: 1px solid var(--rule);
  background: var(--surface);
  color: var(--ink-soft);
  border-radius: 999px;
  padding: 0.35rem 0.95rem;
  cursor: pointer;
  transition: all 0.12s ease;
}
.clip-tabs button:hover { border-color: var(--ink-faint); color: var(--ink); }
.clip-tabs button[aria-selected="true"] {
  background: var(--ink);
  border-color: var(--ink);
  color: #fff;
}

/* ------------------------------------------------------------ data table -- */
.metrics-table { width: 100%; border-collapse: collapse; font-size: 0.94rem; }
.metrics-table caption {
  caption-side: bottom;
  padding-top: 0.9rem;
  font-size: 0.88rem;
  color: var(--ink-soft);
  text-align: left;
}
.metrics-table th, .metrics-table td { padding: 0.6rem 0.75rem; }
.metrics-table thead th {
  border-bottom: 2px solid var(--ink);
  font-weight: 600;
  text-align: right;
}
.metrics-table thead th:first-child { text-align: left; }
.metrics-table tbody td { border-bottom: 1px solid var(--rule); text-align: right; font-variant-numeric: tabular-nums; }
.metrics-table tbody th {
  border-bottom: 1px solid var(--rule);
  text-align: left;
  font-weight: 400;
  color: var(--ink-soft);
}
.metrics-table .col-ours { background: var(--accent-dim); font-weight: 600; color: var(--ink); }
.metrics-table thead .col-ours { color: var(--accent); }
.table-scroll { overflow-x: auto; }

/* ------------------------------------------------------------- key stats -- */
.stat-row { display: flex; flex-wrap: wrap; gap: 1rem; justify-content: center; margin-bottom: 2.2rem; }
.stat {
  flex: 1 1 11rem;
  min-width: 10rem;
  text-align: center;
  padding: 1.1rem 0.8rem;
  border: 1px solid var(--rule);
  border-radius: 8px;
  background: var(--surface);
}
.stat b { display: block; font-size: 1.75rem; font-weight: 600; letter-spacing: -0.02em; color: var(--accent); }
.stat span { display: block; font-size: 0.84rem; color: var(--ink-soft); margin-top: 0.25rem; line-height: 1.4; }

/* ---------------------------------------------------------------- bibtex -- */
.bibtex-block {
  background: var(--surface-2);
  border: 1px solid var(--rule);
  border-radius: 6px;
  padding: 1.1rem 1.3rem;
  overflow-x: auto;
  font-size: 0.88rem;
  line-height: 1.6;
}



/* ---------------------------------------------------------------- footer -- */
.site-footer {
  border-top: 1px solid var(--rule);
  padding: 2.2rem 1.5rem;
  text-align: center;
  font-size: 0.85rem;
  color: var(--ink-faint);
}
.site-footer a { color: var(--ink-soft); text-decoration: underline; }

@media (max-width: 768px) {
  .paper-title { font-size: 1.9rem; }
  .section { padding: 2.5rem 1rem; }
  .panel-labels span { font-size: 0.62rem; letter-spacing: 0.02em; }
}

/* ------------------------------------------------------- source citations -- */
.sources {
  margin-top: 0.6rem;
  text-align: center;
  font-size: 0.82rem;
  line-height: 1.7;
  color: var(--ink-faint);
}
.sources b {
  font-weight: 600;
  color: var(--ink-soft);
  margin-right: 0.15rem;
}
.sources a {
  color: var(--ink-soft);
  text-decoration: none;
  border-bottom: 1px solid var(--rule);
}
.sources a:hover { color: var(--accent); border-bottom-color: var(--accent); }
.sources .sep { margin: 0 0.45rem; color: var(--rule); }

/* ------------------------------------------------ two-row grid with labels -- */
/* The augmentation clip is a 2x5 grid: five object scales across, one robot per
   row. G1 and H2 are near-identical at this size, so the rows need naming on the
   figure itself -- a caption alone reads as a single robot repeated. */
.rowlabel-grid {
  display: grid;
  grid-template-columns: 3rem 1fr;
  grid-template-rows: auto 1fr;
  column-gap: 0.4rem;
  row-gap: 0.4rem;
}
.rowlabel-grid > .panel-labels { grid-column: 2; grid-row: 1; margin-bottom: 0; }
.rowlabel-grid > .panel-video  { grid-column: 2; grid-row: 2; }

.row-labels {
  grid-column: 1;
  grid-row: 2;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.row-labels span {
  flex: 1 1 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--ink-faint);
  background: var(--surface-2);
  border-radius: 4px;
}
.row-labels span.is-ours { color: var(--accent); background: var(--accent-dim); }

@media (max-width: 768px) {
  .rowlabel-grid { grid-template-columns: 1.9rem 1fr; }
  .row-labels span { font-size: 0.6rem; }
}

/* Author links: the names read as names, not as links, until you reach for one. */
.venue-line a { color: inherit; text-decoration: none; border-bottom: 1px solid var(--rule); }
.venue-line a:hover { border-bottom-color: var(--ink); }

/* The embedded viewer. 16:10 on desktop, taller on a phone where the viewer
   stacks its own panels; it needs real height or it is unusable. */
.plate.embed { padding: 0; overflow: hidden; }
.plate.embed iframe {
  display: block; width: 100%; height: min(78vh, 760px);
  min-height: 460px; border: 0; background: var(--surface-2);
}
.plate.embed figcaption { padding: 0.9rem 1.1rem; }
.plate.embed:not(:has(figcaption)) { border-radius: 10px; }
@media (max-width: 720px) { .plate.embed iframe { height: 70vh; min-height: 380px; } }